1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2016 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
38 #include "opcode/ppc.h"
40 typedef enum split16_format_type
47 /* RELA relocations are used here. */
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
61 /* The name of the dynamic interpreter. This is put in the .interp
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE 4*4
72 #define TLS_GET_ADDR_GLINK_SIZE 12*4
74 /* VxWorks uses its own plt layout, filled in by the static linker. */
76 /* The standard VxWorks PLT entry. */
77 #define VXWORKS_PLT_ENTRY_SIZE 32
78 static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
90 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
100 0x60000000, /* nop */
103 /* The initial VxWorks PLT entry. */
104 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
117 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
130 /* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
133 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 /* The number of relocations in the PLTResolve slot. */
136 #define VXWORKS_PLTRESOLVE_RELOCS 2
137 /* The number of relocations in the PLTResolve slot when when creating
139 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
141 /* Some instructions. */
142 #define ADDIS_11_11 0x3d6b0000
143 #define ADDIS_11_30 0x3d7e0000
144 #define ADDIS_12_12 0x3d8c0000
145 #define ADDI_11_11 0x396b0000
146 #define ADD_0_11_11 0x7c0b5a14
147 #define ADD_3_12_2 0x7c6c1214
148 #define ADD_11_0_11 0x7d605a14
150 #define BA 0x48000002
151 #define BCL_20_31 0x429f0005
152 #define BCTR 0x4e800420
153 #define BEQLR 0x4d820020
154 #define CMPWI_11_0 0x2c0b0000
155 #define LIS_11 0x3d600000
156 #define LIS_12 0x3d800000
157 #define LWZU_0_12 0x840c0000
158 #define LWZ_0_12 0x800c0000
159 #define LWZ_11_3 0x81630000
160 #define LWZ_11_11 0x816b0000
161 #define LWZ_11_30 0x817e0000
162 #define LWZ_12_3 0x81830000
163 #define LWZ_12_12 0x818c0000
164 #define MR_0_3 0x7c601b78
165 #define MR_3_0 0x7c030378
166 #define MFLR_0 0x7c0802a6
167 #define MFLR_12 0x7d8802a6
168 #define MTCTR_0 0x7c0903a6
169 #define MTCTR_11 0x7d6903a6
170 #define MTLR_0 0x7c0803a6
171 #define NOP 0x60000000
172 #define SUB_11_11_12 0x7d6c5850
174 /* Offset of tp and dtp pointers from start of TLS block. */
175 #define TP_OFFSET 0x7000
176 #define DTP_OFFSET 0x8000
178 /* The value of a defined global symbol. */
179 #define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
184 static reloc_howto_type
*ppc_elf_howto_table
[R_PPC_max
];
186 static reloc_howto_type ppc_elf_howto_raw
[] = {
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE
, /* type */
190 3, /* size (0 = byte, 1 = short, 2 = long) */
192 FALSE
, /* pc_relative */
194 complain_overflow_dont
, /* complain_on_overflow */
195 bfd_elf_generic_reloc
, /* special_function */
196 "R_PPC_NONE", /* name */
197 FALSE
, /* partial_inplace */
200 FALSE
), /* pcrel_offset */
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32
, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE
, /* pc_relative */
209 complain_overflow_dont
, /* complain_on_overflow */
210 bfd_elf_generic_reloc
, /* special_function */
211 "R_PPC_ADDR32", /* name */
212 FALSE
, /* partial_inplace */
214 0xffffffff, /* dst_mask */
215 FALSE
), /* pcrel_offset */
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24
, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE
, /* pc_relative */
225 complain_overflow_signed
, /* complain_on_overflow */
226 bfd_elf_generic_reloc
, /* special_function */
227 "R_PPC_ADDR24", /* name */
228 FALSE
, /* partial_inplace */
230 0x3fffffc, /* dst_mask */
231 FALSE
), /* pcrel_offset */
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16
, /* type */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
238 FALSE
, /* pc_relative */
240 complain_overflow_bitfield
, /* complain_on_overflow */
241 bfd_elf_generic_reloc
, /* special_function */
242 "R_PPC_ADDR16", /* name */
243 FALSE
, /* partial_inplace */
245 0xffff, /* dst_mask */
246 FALSE
), /* pcrel_offset */
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO
, /* type */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
253 FALSE
, /* pc_relative */
255 complain_overflow_dont
,/* complain_on_overflow */
256 bfd_elf_generic_reloc
, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
258 FALSE
, /* partial_inplace */
260 0xffff, /* dst_mask */
261 FALSE
), /* pcrel_offset */
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI
, /* type */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
268 FALSE
, /* pc_relative */
270 complain_overflow_dont
, /* complain_on_overflow */
271 bfd_elf_generic_reloc
, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
273 FALSE
, /* partial_inplace */
275 0xffff, /* dst_mask */
276 FALSE
), /* pcrel_offset */
278 /* The high order 16 bits of an address, plus 1 if the contents of
279 the low 16 bits, treated as a signed number, is negative. */
280 HOWTO (R_PPC_ADDR16_HA
, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE
, /* pc_relative */
286 complain_overflow_dont
, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc
, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
289 FALSE
, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE
), /* pcrel_offset */
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14
, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE
, /* pc_relative */
302 complain_overflow_signed
, /* complain_on_overflow */
303 bfd_elf_generic_reloc
, /* special_function */
304 "R_PPC_ADDR14", /* name */
305 FALSE
, /* partial_inplace */
307 0xfffc, /* dst_mask */
308 FALSE
), /* pcrel_offset */
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is expected to be taken. The lower two
312 bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE
, /* pc_relative */
319 complain_overflow_signed
, /* complain_on_overflow */
320 bfd_elf_generic_reloc
, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
322 FALSE
, /* partial_inplace */
324 0xfffc, /* dst_mask */
325 FALSE
), /* pcrel_offset */
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE
, /* pc_relative */
336 complain_overflow_signed
, /* complain_on_overflow */
337 bfd_elf_generic_reloc
, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
339 FALSE
, /* partial_inplace */
341 0xfffc, /* dst_mask */
342 FALSE
), /* pcrel_offset */
344 /* A relative 26 bit branch; the lower two bits must be zero. */
345 HOWTO (R_PPC_REL24
, /* type */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
349 TRUE
, /* pc_relative */
351 complain_overflow_signed
, /* complain_on_overflow */
352 bfd_elf_generic_reloc
, /* special_function */
353 "R_PPC_REL24", /* name */
354 FALSE
, /* partial_inplace */
356 0x3fffffc, /* dst_mask */
357 TRUE
), /* pcrel_offset */
359 /* A relative 16 bit branch; the lower two bits must be zero. */
360 HOWTO (R_PPC_REL14
, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 TRUE
, /* pc_relative */
366 complain_overflow_signed
, /* complain_on_overflow */
367 bfd_elf_generic_reloc
, /* special_function */
368 "R_PPC_REL14", /* name */
369 FALSE
, /* partial_inplace */
371 0xfffc, /* dst_mask */
372 TRUE
), /* pcrel_offset */
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is expected to be taken. The lower two bits must be
377 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE
, /* pc_relative */
383 complain_overflow_signed
, /* complain_on_overflow */
384 bfd_elf_generic_reloc
, /* special_function */
385 "R_PPC_REL14_BRTAKEN", /* name */
386 FALSE
, /* partial_inplace */
388 0xfffc, /* dst_mask */
389 TRUE
), /* pcrel_offset */
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is not expected to be taken. The lower two bits must
394 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE
, /* pc_relative */
400 complain_overflow_signed
, /* complain_on_overflow */
401 bfd_elf_generic_reloc
, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
403 FALSE
, /* partial_inplace */
405 0xfffc, /* dst_mask */
406 TRUE
), /* pcrel_offset */
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
410 HOWTO (R_PPC_GOT16
, /* type */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
414 FALSE
, /* pc_relative */
416 complain_overflow_signed
, /* complain_on_overflow */
417 ppc_elf_unhandled_reloc
, /* special_function */
418 "R_PPC_GOT16", /* name */
419 FALSE
, /* partial_inplace */
421 0xffff, /* dst_mask */
422 FALSE
), /* pcrel_offset */
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
426 HOWTO (R_PPC_GOT16_LO
, /* type */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
430 FALSE
, /* pc_relative */
432 complain_overflow_dont
, /* complain_on_overflow */
433 ppc_elf_unhandled_reloc
, /* special_function */
434 "R_PPC_GOT16_LO", /* name */
435 FALSE
, /* partial_inplace */
437 0xffff, /* dst_mask */
438 FALSE
), /* pcrel_offset */
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
442 HOWTO (R_PPC_GOT16_HI
, /* type */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
446 FALSE
, /* pc_relative */
448 complain_overflow_dont
, /* complain_on_overflow */
449 ppc_elf_unhandled_reloc
, /* special_function */
450 "R_PPC_GOT16_HI", /* name */
451 FALSE
, /* partial_inplace */
453 0xffff, /* dst_mask */
454 FALSE
), /* pcrel_offset */
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
458 HOWTO (R_PPC_GOT16_HA
, /* type */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
462 FALSE
, /* pc_relative */
464 complain_overflow_dont
, /* complain_on_overflow */
465 ppc_elf_unhandled_reloc
, /* special_function */
466 "R_PPC_GOT16_HA", /* name */
467 FALSE
, /* partial_inplace */
469 0xffff, /* dst_mask */
470 FALSE
), /* pcrel_offset */
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24
, /* type */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
478 TRUE
, /* pc_relative */
480 complain_overflow_signed
, /* complain_on_overflow */
481 ppc_elf_unhandled_reloc
, /* special_function */
482 "R_PPC_PLTREL24", /* name */
483 FALSE
, /* partial_inplace */
485 0x3fffffc, /* dst_mask */
486 TRUE
), /* pcrel_offset */
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY
, /* type */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
497 FALSE
, /* pc_relative */
499 complain_overflow_dont
, /* complain_on_overflow */
500 ppc_elf_unhandled_reloc
, /* special_function */
501 "R_PPC_COPY", /* name */
502 FALSE
, /* partial_inplace */
505 FALSE
), /* pcrel_offset */
507 /* Like R_PPC_ADDR32, but used when setting global offset table
509 HOWTO (R_PPC_GLOB_DAT
, /* type */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
513 FALSE
, /* pc_relative */
515 complain_overflow_dont
, /* complain_on_overflow */
516 ppc_elf_unhandled_reloc
, /* special_function */
517 "R_PPC_GLOB_DAT", /* name */
518 FALSE
, /* partial_inplace */
520 0xffffffff, /* dst_mask */
521 FALSE
), /* pcrel_offset */
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT
, /* type */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE
, /* pc_relative */
530 complain_overflow_dont
, /* complain_on_overflow */
531 ppc_elf_unhandled_reloc
, /* special_function */
532 "R_PPC_JMP_SLOT", /* name */
533 FALSE
, /* partial_inplace */
536 FALSE
), /* pcrel_offset */
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
541 HOWTO (R_PPC_RELATIVE
, /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 FALSE
, /* pc_relative */
547 complain_overflow_dont
, /* complain_on_overflow */
548 bfd_elf_generic_reloc
, /* special_function */
549 "R_PPC_RELATIVE", /* name */
550 FALSE
, /* partial_inplace */
552 0xffffffff, /* dst_mask */
553 FALSE
), /* pcrel_offset */
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC
, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 TRUE
, /* pc_relative */
564 complain_overflow_signed
, /* complain_on_overflow */
565 bfd_elf_generic_reloc
, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
567 FALSE
, /* partial_inplace */
569 0x3fffffc, /* dst_mask */
570 TRUE
), /* pcrel_offset */
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32
, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE
, /* pc_relative */
579 complain_overflow_dont
, /* complain_on_overflow */
580 bfd_elf_generic_reloc
, /* special_function */
581 "R_PPC_UADDR32", /* name */
582 FALSE
, /* partial_inplace */
584 0xffffffff, /* dst_mask */
585 FALSE
), /* pcrel_offset */
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16
, /* type */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
592 FALSE
, /* pc_relative */
594 complain_overflow_bitfield
, /* complain_on_overflow */
595 bfd_elf_generic_reloc
, /* special_function */
596 "R_PPC_UADDR16", /* name */
597 FALSE
, /* partial_inplace */
599 0xffff, /* dst_mask */
600 FALSE
), /* pcrel_offset */
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32
, /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 TRUE
, /* pc_relative */
609 complain_overflow_dont
, /* complain_on_overflow */
610 bfd_elf_generic_reloc
, /* special_function */
611 "R_PPC_REL32", /* name */
612 FALSE
, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 TRUE
), /* pcrel_offset */
617 /* 32-bit relocation to the symbol's procedure linkage table.
618 FIXME: not supported. */
619 HOWTO (R_PPC_PLT32
, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 FALSE
, /* pc_relative */
625 complain_overflow_dont
, /* complain_on_overflow */
626 ppc_elf_unhandled_reloc
, /* special_function */
627 "R_PPC_PLT32", /* name */
628 FALSE
, /* partial_inplace */
631 FALSE
), /* pcrel_offset */
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 FIXME: not supported. */
635 HOWTO (R_PPC_PLTREL32
, /* type */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
639 TRUE
, /* pc_relative */
641 complain_overflow_dont
, /* complain_on_overflow */
642 ppc_elf_unhandled_reloc
, /* special_function */
643 "R_PPC_PLTREL32", /* name */
644 FALSE
, /* partial_inplace */
647 TRUE
), /* pcrel_offset */
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
651 HOWTO (R_PPC_PLT16_LO
, /* type */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE
, /* pc_relative */
657 complain_overflow_dont
, /* complain_on_overflow */
658 ppc_elf_unhandled_reloc
, /* special_function */
659 "R_PPC_PLT16_LO", /* name */
660 FALSE
, /* partial_inplace */
662 0xffff, /* dst_mask */
663 FALSE
), /* pcrel_offset */
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
667 HOWTO (R_PPC_PLT16_HI
, /* type */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE
, /* pc_relative */
673 complain_overflow_dont
, /* complain_on_overflow */
674 ppc_elf_unhandled_reloc
, /* special_function */
675 "R_PPC_PLT16_HI", /* name */
676 FALSE
, /* partial_inplace */
678 0xffff, /* dst_mask */
679 FALSE
), /* pcrel_offset */
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
683 HOWTO (R_PPC_PLT16_HA
, /* type */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE
, /* pc_relative */
689 complain_overflow_dont
, /* complain_on_overflow */
690 ppc_elf_unhandled_reloc
, /* special_function */
691 "R_PPC_PLT16_HA", /* name */
692 FALSE
, /* partial_inplace */
694 0xffff, /* dst_mask */
695 FALSE
), /* pcrel_offset */
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
699 HOWTO (R_PPC_SDAREL16
, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_signed
, /* complain_on_overflow */
706 ppc_elf_unhandled_reloc
, /* special_function */
707 "R_PPC_SDAREL16", /* name */
708 FALSE
, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 /* 16-bit section relative relocation. */
714 HOWTO (R_PPC_SECTOFF
, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE
, /* pc_relative */
720 complain_overflow_signed
, /* complain_on_overflow */
721 ppc_elf_unhandled_reloc
, /* special_function */
722 "R_PPC_SECTOFF", /* name */
723 FALSE
, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE
), /* pcrel_offset */
728 /* 16-bit lower half section relative relocation. */
729 HOWTO (R_PPC_SECTOFF_LO
, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 FALSE
, /* pc_relative */
735 complain_overflow_dont
, /* complain_on_overflow */
736 ppc_elf_unhandled_reloc
, /* special_function */
737 "R_PPC_SECTOFF_LO", /* name */
738 FALSE
, /* partial_inplace */
740 0xffff, /* dst_mask */
741 FALSE
), /* pcrel_offset */
743 /* 16-bit upper half section relative relocation. */
744 HOWTO (R_PPC_SECTOFF_HI
, /* type */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE
, /* pc_relative */
750 complain_overflow_dont
, /* complain_on_overflow */
751 ppc_elf_unhandled_reloc
, /* special_function */
752 "R_PPC_SECTOFF_HI", /* name */
753 FALSE
, /* partial_inplace */
755 0xffff, /* dst_mask */
756 FALSE
), /* pcrel_offset */
758 /* 16-bit upper half adjusted section relative relocation. */
759 HOWTO (R_PPC_SECTOFF_HA
, /* type */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
763 FALSE
, /* pc_relative */
765 complain_overflow_dont
, /* complain_on_overflow */
766 ppc_elf_unhandled_reloc
, /* special_function */
767 "R_PPC_SECTOFF_HA", /* name */
768 FALSE
, /* partial_inplace */
770 0xffff, /* dst_mask */
771 FALSE
), /* pcrel_offset */
773 /* Marker relocs for TLS. */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE
, /* pc_relative */
780 complain_overflow_dont
, /* complain_on_overflow */
781 bfd_elf_generic_reloc
, /* special_function */
782 "R_PPC_TLS", /* name */
783 FALSE
, /* partial_inplace */
786 FALSE
), /* pcrel_offset */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
792 FALSE
, /* pc_relative */
794 complain_overflow_dont
, /* complain_on_overflow */
795 bfd_elf_generic_reloc
, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE
, /* partial_inplace */
800 FALSE
), /* pcrel_offset */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
806 FALSE
, /* pc_relative */
808 complain_overflow_dont
, /* complain_on_overflow */
809 bfd_elf_generic_reloc
, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE
, /* partial_inplace */
814 FALSE
), /* pcrel_offset */
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32
,
820 2, /* size (0 = byte, 1 = short, 2 = long) */
822 FALSE
, /* pc_relative */
824 complain_overflow_dont
, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc
, /* special_function */
826 "R_PPC_DTPMOD32", /* name */
827 FALSE
, /* partial_inplace */
829 0xffffffff, /* dst_mask */
830 FALSE
), /* pcrel_offset */
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32
,
837 2, /* size (0 = byte, 1 = short, 2 = long) */
839 FALSE
, /* pc_relative */
841 complain_overflow_dont
, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc
, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE
, /* partial_inplace */
846 0xffffffff, /* dst_mask */
847 FALSE
), /* pcrel_offset */
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16
,
852 1, /* size (0 = byte, 1 = short, 2 = long) */
854 FALSE
, /* pc_relative */
856 complain_overflow_signed
, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc
, /* special_function */
858 "R_PPC_DTPREL16", /* name */
859 FALSE
, /* partial_inplace */
861 0xffff, /* dst_mask */
862 FALSE
), /* pcrel_offset */
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO
,
867 1, /* size (0 = byte, 1 = short, 2 = long) */
869 FALSE
, /* pc_relative */
871 complain_overflow_dont
, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc
, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
874 FALSE
, /* partial_inplace */
876 0xffff, /* dst_mask */
877 FALSE
), /* pcrel_offset */
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI
,
882 1, /* size (0 = byte, 1 = short, 2 = long) */
884 FALSE
, /* pc_relative */
886 complain_overflow_dont
, /* complain_on_overflow */
887 ppc_elf_unhandled_reloc
, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
889 FALSE
, /* partial_inplace */
891 0xffff, /* dst_mask */
892 FALSE
), /* pcrel_offset */
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA
,
897 1, /* size (0 = byte, 1 = short, 2 = long) */
899 FALSE
, /* pc_relative */
901 complain_overflow_dont
, /* complain_on_overflow */
902 ppc_elf_unhandled_reloc
, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
904 FALSE
, /* partial_inplace */
906 0xffff, /* dst_mask */
907 FALSE
), /* pcrel_offset */
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32
,
913 2, /* size (0 = byte, 1 = short, 2 = long) */
915 FALSE
, /* pc_relative */
917 complain_overflow_dont
, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc
, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE
, /* partial_inplace */
922 0xffffffff, /* dst_mask */
923 FALSE
), /* pcrel_offset */
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16
,
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE
, /* pc_relative */
932 complain_overflow_signed
, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc
, /* special_function */
934 "R_PPC_TPREL16", /* name */
935 FALSE
, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE
), /* pcrel_offset */
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO
,
943 1, /* size (0 = byte, 1 = short, 2 = long) */
945 FALSE
, /* pc_relative */
947 complain_overflow_dont
, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc
, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
950 FALSE
, /* partial_inplace */
952 0xffff, /* dst_mask */
953 FALSE
), /* pcrel_offset */
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI
,
958 1, /* size (0 = byte, 1 = short, 2 = long) */
960 FALSE
, /* pc_relative */
962 complain_overflow_dont
, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc
, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE
, /* partial_inplace */
967 0xffff, /* dst_mask */
968 FALSE
), /* pcrel_offset */
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA
,
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE
, /* pc_relative */
977 complain_overflow_dont
, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc
, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE
, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE
), /* pcrel_offset */
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16
,
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE
, /* pc_relative */
994 complain_overflow_signed
, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc
, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
997 FALSE
, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE
), /* pcrel_offset */
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO
,
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 FALSE
, /* pc_relative */
1009 complain_overflow_dont
, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc
, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
1012 FALSE
, /* partial_inplace */
1014 0xffff, /* dst_mask */
1015 FALSE
), /* pcrel_offset */
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI
,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 FALSE
, /* pc_relative */
1024 complain_overflow_dont
, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc
, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE
, /* partial_inplace */
1029 0xffff, /* dst_mask */
1030 FALSE
), /* pcrel_offset */
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA
,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 FALSE
, /* pc_relative */
1039 complain_overflow_dont
, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc
, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE
, /* partial_inplace */
1044 0xffff, /* dst_mask */
1045 FALSE
), /* pcrel_offset */
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1050 HOWTO (R_PPC_GOT_TLSLD16
,
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE
, /* pc_relative */
1056 complain_overflow_signed
, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc
, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
1059 FALSE
, /* partial_inplace */
1061 0xffff, /* dst_mask */
1062 FALSE
), /* pcrel_offset */
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 FALSE
, /* pc_relative */
1071 complain_overflow_dont
, /* complain_on_overflow */
1072 ppc_elf_unhandled_reloc
, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
1074 FALSE
, /* partial_inplace */
1076 0xffff, /* dst_mask */
1077 FALSE
), /* pcrel_offset */
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 FALSE
, /* pc_relative */
1086 complain_overflow_dont
, /* complain_on_overflow */
1087 ppc_elf_unhandled_reloc
, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
1089 FALSE
, /* partial_inplace */
1091 0xffff, /* dst_mask */
1092 FALSE
), /* pcrel_offset */
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE
, /* pc_relative */
1101 complain_overflow_dont
, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc
, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE
, /* partial_inplace */
1106 0xffff, /* dst_mask */
1107 FALSE
), /* pcrel_offset */
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16
,
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE
, /* pc_relative */
1117 complain_overflow_signed
, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc
, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
1120 FALSE
, /* partial_inplace */
1122 0xffff, /* dst_mask */
1123 FALSE
), /* pcrel_offset */
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE
, /* pc_relative */
1132 complain_overflow_dont
, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc
, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE
, /* partial_inplace */
1137 0xffff, /* dst_mask */
1138 FALSE
), /* pcrel_offset */
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 FALSE
, /* pc_relative */
1147 complain_overflow_dont
, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc
, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE
, /* partial_inplace */
1152 0xffff, /* dst_mask */
1153 FALSE
), /* pcrel_offset */
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 FALSE
, /* pc_relative */
1162 complain_overflow_dont
, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc
, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE
, /* partial_inplace */
1167 0xffff, /* dst_mask */
1168 FALSE
), /* pcrel_offset */
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16
,
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE
, /* pc_relative */
1178 complain_overflow_signed
, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc
, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE
, /* partial_inplace */
1183 0xffff, /* dst_mask */
1184 FALSE
), /* pcrel_offset */
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO
,
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE
, /* pc_relative */
1193 complain_overflow_dont
, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc
, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE
, /* partial_inplace */
1198 0xffff, /* dst_mask */
1199 FALSE
), /* pcrel_offset */
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI
,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE
, /* pc_relative */
1208 complain_overflow_dont
, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc
, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE
, /* partial_inplace */
1213 0xffff, /* dst_mask */
1214 FALSE
), /* pcrel_offset */
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA
,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE
, /* pc_relative */
1223 complain_overflow_dont
, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc
, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE
, /* partial_inplace */
1228 0xffff, /* dst_mask */
1229 FALSE
), /* pcrel_offset */
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE
, /* pc_relative */
1241 complain_overflow_dont
, /* complain_on_overflow */
1242 ppc_elf_unhandled_reloc
, /* special_function */
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE
, /* partial_inplace */
1246 0xffffffff, /* dst_mask */
1247 FALSE
), /* pcrel_offset */
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1254 FALSE
, /* pc_relative */
1256 complain_overflow_signed
, /* complain_on_overflow */
1257 ppc_elf_unhandled_reloc
, /* special_function */
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE
, /* partial_inplace */
1261 0xffff, /* dst_mask */
1262 FALSE
), /* pcrel_offset */
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE
, /* pc_relative */
1271 complain_overflow_dont
,/* complain_on_overflow */
1272 ppc_elf_unhandled_reloc
, /* special_function */
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE
, /* partial_inplace */
1276 0xffff, /* dst_mask */
1277 FALSE
), /* pcrel_offset */
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE
, /* pc_relative */
1286 complain_overflow_dont
, /* complain_on_overflow */
1287 ppc_elf_unhandled_reloc
, /* special_function */
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE
, /* partial_inplace */
1291 0xffff, /* dst_mask */
1292 FALSE
), /* pcrel_offset */
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1297 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE
, /* pc_relative */
1303 complain_overflow_dont
, /* complain_on_overflow */
1304 ppc_elf_unhandled_reloc
, /* special_function */
1305 "R_PPC_EMB_NADDR16_HA", /* name */
1306 FALSE
, /* partial_inplace */
1308 0xffff, /* dst_mask */
1309 FALSE
), /* pcrel_offset */
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1318 FALSE
, /* pc_relative */
1320 complain_overflow_signed
, /* complain_on_overflow */
1321 ppc_elf_unhandled_reloc
, /* special_function */
1322 "R_PPC_EMB_SDAI16", /* name */
1323 FALSE
, /* partial_inplace */
1325 0xffff, /* dst_mask */
1326 FALSE
), /* pcrel_offset */
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE
, /* pc_relative */
1337 complain_overflow_signed
, /* complain_on_overflow */
1338 ppc_elf_unhandled_reloc
, /* special_function */
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE
, /* partial_inplace */
1342 0xffff, /* dst_mask */
1343 FALSE
), /* pcrel_offset */
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE
, /* pc_relative */
1353 complain_overflow_signed
, /* complain_on_overflow */
1354 ppc_elf_unhandled_reloc
, /* special_function */
1355 "R_PPC_EMB_SDA2REL", /* name */
1356 FALSE
, /* partial_inplace */
1358 0xffff, /* dst_mask */
1359 FALSE
), /* pcrel_offset */
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21
, /* type */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE
, /* pc_relative */
1370 complain_overflow_signed
, /* complain_on_overflow */
1371 ppc_elf_unhandled_reloc
, /* special_function */
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE
, /* partial_inplace */
1375 0xffff, /* dst_mask */
1376 FALSE
), /* pcrel_offset */
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE
, /* pc_relative */
1394 complain_overflow_signed
, /* complain_on_overflow */
1395 ppc_elf_unhandled_reloc
, /* special_function */
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE
, /* partial_inplace */
1399 0xffff, /* dst_mask */
1400 FALSE
), /* pcrel_offset */
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8
, /* type */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 TRUE
, /* pc_relative */
1409 complain_overflow_signed
, /* complain_on_overflow */
1410 bfd_elf_generic_reloc
, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE
, /* partial_inplace */
1414 0xff, /* dst_mask */
1415 TRUE
), /* pcrel_offset */
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15
, /* type */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1422 TRUE
, /* pc_relative */
1424 complain_overflow_signed
, /* complain_on_overflow */
1425 bfd_elf_generic_reloc
, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE
, /* partial_inplace */
1429 0xfffe, /* dst_mask */
1430 TRUE
), /* pcrel_offset */
1432 /* A relative 24 bit branch. */
1433 HOWTO (R_PPC_VLE_REL24
, /* type */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1437 TRUE
, /* pc_relative */
1439 complain_overflow_signed
, /* complain_on_overflow */
1440 bfd_elf_generic_reloc
, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE
, /* partial_inplace */
1444 0x1fffffe, /* dst_mask */
1445 TRUE
), /* pcrel_offset */
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A
, /* type */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
1452 FALSE
, /* pc_relative */
1454 complain_overflow_dont
, /* complain_on_overflow */
1455 ppc_elf_unhandled_reloc
, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE
, /* partial_inplace */
1459 0x1f07ff, /* dst_mask */
1460 FALSE
), /* pcrel_offset */
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D
, /* type */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
1467 FALSE
, /* pc_relative */
1469 complain_overflow_dont
, /* complain_on_overflow */
1470 ppc_elf_unhandled_reloc
, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE
, /* partial_inplace */
1474 0x1f007ff, /* dst_mask */
1475 FALSE
), /* pcrel_offset */
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A
, /* type */
1479 16, /* rightshift */
1480 2, /* size (0 = byte, 1 = short, 2 = long) */
1482 FALSE
, /* pc_relative */
1484 complain_overflow_dont
, /* complain_on_overflow */
1485 ppc_elf_unhandled_reloc
, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE
, /* partial_inplace */
1489 0x1f07ff, /* dst_mask */
1490 FALSE
), /* pcrel_offset */
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D
, /* type */
1494 16, /* rightshift */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1497 FALSE
, /* pc_relative */
1499 complain_overflow_dont
, /* complain_on_overflow */
1500 ppc_elf_unhandled_reloc
, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE
, /* partial_inplace */
1504 0x1f007ff, /* dst_mask */
1505 FALSE
), /* pcrel_offset */
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A
, /* type */
1509 16, /* rightshift */
1510 2, /* size (0 = byte, 1 = short, 2 = long) */
1512 FALSE
, /* pc_relative */
1514 complain_overflow_dont
, /* complain_on_overflow */
1515 ppc_elf_unhandled_reloc
, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE
, /* partial_inplace */
1519 0x1f07ff, /* dst_mask */
1520 FALSE
), /* pcrel_offset */
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D
, /* type */
1524 16, /* rightshift */
1525 2, /* size (0 = byte, 1 = short, 2 = long) */
1527 FALSE
, /* pc_relative */
1529 complain_overflow_dont
, /* complain_on_overflow */
1530 ppc_elf_unhandled_reloc
, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE
, /* partial_inplace */
1534 0x1f007ff, /* dst_mask */
1535 FALSE
), /* pcrel_offset */
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21
, /* type */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1544 FALSE
, /* pc_relative */
1546 complain_overflow_signed
, /* complain_on_overflow */
1547 ppc_elf_unhandled_reloc
, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE
, /* partial_inplace */
1551 0xffff, /* dst_mask */
1552 FALSE
), /* pcrel_offset */
1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1555 HOWTO (R_PPC_VLE_SDA21_LO
, /* type */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 FALSE
, /* pc_relative */
1561 complain_overflow_dont
, /* complain_on_overflow */
1562 ppc_elf_unhandled_reloc
, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE
, /* partial_inplace */
1566 0xffff, /* dst_mask */
1567 FALSE
), /* pcrel_offset */
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A
,/* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE
, /* pc_relative */
1576 complain_overflow_dont
, /* complain_on_overflow */
1577 ppc_elf_unhandled_reloc
, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE
, /* partial_inplace */
1581 0x1f07ff, /* dst_mask */
1582 FALSE
), /* pcrel_offset */
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D
, /* type */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1589 FALSE
, /* pc_relative */
1591 complain_overflow_dont
, /* complain_on_overflow */
1592 ppc_elf_unhandled_reloc
, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE
, /* partial_inplace */
1596 0x1f007ff, /* dst_mask */
1597 FALSE
), /* pcrel_offset */
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A
, /* type */
1601 16, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1604 FALSE
, /* pc_relative */
1606 complain_overflow_dont
, /* complain_on_overflow */
1607 ppc_elf_unhandled_reloc
, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE
, /* partial_inplace */
1611 0x1f07ff, /* dst_mask */
1612 FALSE
), /* pcrel_offset */
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D
, /* type */
1616 16, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1619 FALSE
, /* pc_relative */
1621 complain_overflow_dont
, /* complain_on_overflow */
1622 ppc_elf_unhandled_reloc
, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE
, /* partial_inplace */
1626 0x1f007ff, /* dst_mask */
1627 FALSE
), /* pcrel_offset */
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A
, /* type */
1631 16, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 FALSE
, /* pc_relative */
1636 complain_overflow_dont
, /* complain_on_overflow */
1637 ppc_elf_unhandled_reloc
, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE
, /* partial_inplace */
1641 0x1f07ff, /* dst_mask */
1642 FALSE
), /* pcrel_offset */
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D
, /* type */
1646 16, /* rightshift */
1647 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 FALSE
, /* pc_relative */
1651 complain_overflow_dont
, /* complain_on_overflow */
1652 ppc_elf_unhandled_reloc
, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE
, /* partial_inplace */
1656 0x1f007ff, /* dst_mask */
1657 FALSE
), /* pcrel_offset */
1659 HOWTO (R_PPC_IRELATIVE
, /* type */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE
, /* pc_relative */
1665 complain_overflow_dont
, /* complain_on_overflow */
1666 ppc_elf_unhandled_reloc
, /* special_function */
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE
, /* partial_inplace */
1670 0xffffffff, /* dst_mask */
1671 FALSE
), /* pcrel_offset */
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16
, /* type */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 TRUE
, /* pc_relative */
1680 complain_overflow_signed
, /* complain_on_overflow */
1681 bfd_elf_generic_reloc
, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE
, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 TRUE
), /* pcrel_offset */
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO
, /* type */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 TRUE
, /* pc_relative */
1695 complain_overflow_dont
,/* complain_on_overflow */
1696 bfd_elf_generic_reloc
, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE
, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 TRUE
), /* pcrel_offset */
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI
, /* type */
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 TRUE
, /* pc_relative */
1710 complain_overflow_dont
, /* complain_on_overflow */
1711 bfd_elf_generic_reloc
, /* special_function */
1712 "R_PPC_REL16_HI", /* name */
1713 FALSE
, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 TRUE
), /* pcrel_offset */
1718 /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA
, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 TRUE
, /* pc_relative */
1726 complain_overflow_dont
, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc
, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE
, /* partial_inplace */
1731 0xffff, /* dst_mask */
1732 TRUE
), /* pcrel_offset */
1734 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1735 HOWTO (R_PPC_REL16DX_HA
, /* type */
1736 16, /* rightshift */
1737 2, /* size (0 = byte, 1 = short, 2 = long) */
1739 TRUE
, /* pc_relative */
1741 complain_overflow_signed
, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc
, /* special_function */
1743 "R_PPC_REL16DX_HA", /* name */
1744 FALSE
, /* partial_inplace */
1746 0x1fffc1, /* dst_mask */
1747 TRUE
), /* pcrel_offset */
1749 /* GNU extension to record C++ vtable hierarchy. */
1750 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1752 0, /* size (0 = byte, 1 = short, 2 = long) */
1754 FALSE
, /* pc_relative */
1756 complain_overflow_dont
, /* complain_on_overflow */
1757 NULL
, /* special_function */
1758 "R_PPC_GNU_VTINHERIT", /* name */
1759 FALSE
, /* partial_inplace */
1762 FALSE
), /* pcrel_offset */
1764 /* GNU extension to record C++ vtable member usage. */
1765 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1767 0, /* size (0 = byte, 1 = short, 2 = long) */
1769 FALSE
, /* pc_relative */
1771 complain_overflow_dont
, /* complain_on_overflow */
1772 NULL
, /* special_function */
1773 "R_PPC_GNU_VTENTRY", /* name */
1774 FALSE
, /* partial_inplace */
1777 FALSE
), /* pcrel_offset */
1779 /* Phony reloc to handle AIX style TOC entries. */
1780 HOWTO (R_PPC_TOC16
, /* type */
1782 1, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE
, /* pc_relative */
1786 complain_overflow_signed
, /* complain_on_overflow */
1787 ppc_elf_unhandled_reloc
, /* special_function */
1788 "R_PPC_TOC16", /* name */
1789 FALSE
, /* partial_inplace */
1791 0xffff, /* dst_mask */
1792 FALSE
), /* pcrel_offset */
1795 /* External 32-bit PPC structure for PRPSINFO. This structure is
1796 ABI-defined, thus we choose to use char arrays here in order to
1797 avoid dealing with different types in different architectures.
1799 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1800 most non-PPC architectures use `short int'.
1802 This structure will ultimately be written in the corefile's note
1803 section, as the PRPSINFO. */
1805 struct elf_external_ppc_linux_prpsinfo32
1807 char pr_state
; /* Numeric process state. */
1808 char pr_sname
; /* Char for pr_state. */
1809 char pr_zomb
; /* Zombie. */
1810 char pr_nice
; /* Nice val. */
1811 char pr_flag
[4]; /* Flags. */
1818 char pr_fname
[16]; /* Filename of executable. */
1819 char pr_psargs
[80]; /* Initial part of arg list. */
1822 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1823 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1826 swap_ppc_linux_prpsinfo32_out (bfd
*obfd
,
1827 const struct elf_internal_linux_prpsinfo
*from
,
1828 struct elf_external_ppc_linux_prpsinfo32
*to
)
1830 bfd_put_8 (obfd
, from
->pr_state
, &to
->pr_state
);
1831 bfd_put_8 (obfd
, from
->pr_sname
, &to
->pr_sname
);
1832 bfd_put_8 (obfd
, from
->pr_zomb
, &to
->pr_zomb
);
1833 bfd_put_8 (obfd
, from
->pr_nice
, &to
->pr_nice
);
1834 bfd_put_32 (obfd
, from
->pr_flag
, to
->pr_flag
);
1835 bfd_put_32 (obfd
, from
->pr_uid
, to
->pr_uid
);
1836 bfd_put_32 (obfd
, from
->pr_gid
, to
->pr_gid
);
1837 bfd_put_32 (obfd
, from
->pr_pid
, to
->pr_pid
);
1838 bfd_put_32 (obfd
, from
->pr_ppid
, to
->pr_ppid
);
1839 bfd_put_32 (obfd
, from
->pr_pgrp
, to
->pr_pgrp
);
1840 bfd_put_32 (obfd
, from
->pr_sid
, to
->pr_sid
);
1841 strncpy (to
->pr_fname
, from
->pr_fname
, sizeof (to
->pr_fname
));
1842 strncpy (to
->pr_psargs
, from
->pr_psargs
, sizeof (to
->pr_psargs
));
1845 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1848 ppc_elf_howto_init (void)
1850 unsigned int i
, type
;
1853 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1856 type
= ppc_elf_howto_raw
[i
].type
;
1857 if (type
>= (sizeof (ppc_elf_howto_table
)
1858 / sizeof (ppc_elf_howto_table
[0])))
1860 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1864 static reloc_howto_type
*
1865 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1866 bfd_reloc_code_real_type code
)
1868 enum elf_ppc_reloc_type r
;
1870 /* Initialize howto table if not already done. */
1871 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1872 ppc_elf_howto_init ();
1879 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
1880 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
1881 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
1882 case BFD_RELOC_PPC64_ADDR16_DS
:
1883 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
1884 case BFD_RELOC_PPC64_ADDR16_LO_DS
:
1885 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
1886 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
1887 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
1888 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
1889 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
1890 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
1891 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
1892 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
1893 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
1894 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
1895 case BFD_RELOC_PPC64_GOT16_DS
:
1896 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
1897 case BFD_RELOC_PPC64_GOT16_LO_DS
:
1898 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
1899 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
1900 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
1901 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
1902 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
1903 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
1904 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
1905 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
1906 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
1907 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
1908 case BFD_RELOC_PPC64_PLT16_LO_DS
:
1909 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
1910 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
1911 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
1912 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
1913 case BFD_RELOC_PPC64_SECTOFF_DS
:
1914 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
1915 case BFD_RELOC_PPC64_SECTOFF_LO_DS
:
1916 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
1917 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
1918 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
1919 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
1920 case BFD_RELOC_PPC64_TOC16_DS
:
1921 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
1922 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
1923 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC_TLSGD
; break;
1924 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC_TLSLD
; break;
1925 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
1926 case BFD_RELOC_PPC64_TPREL16_DS
:
1927 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
1928 case BFD_RELOC_PPC64_TPREL16_LO_DS
:
1929 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
1930 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
1931 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
1932 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
1933 case BFD_RELOC_PPC64_DTPREL16_DS
:
1934 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
1935 case BFD_RELOC_PPC64_DTPREL16_LO_DS
:
1936 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
1937 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
1938 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
1939 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
1943 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
1947 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
1951 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
1955 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
1956 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
1960 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
1961 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
1962 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
1963 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
1964 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
1965 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
1966 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
1967 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
1969 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
1970 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
1971 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
1972 case BFD_RELOC_PPC_VLE_REL8
: r
= R_PPC_VLE_REL8
; break;
1973 case BFD_RELOC_PPC_VLE_REL15
: r
= R_PPC_VLE_REL15
; break;
1974 case BFD_RELOC_PPC_VLE_REL24
: r
= R_PPC_VLE_REL24
; break;
1975 case BFD_RELOC_PPC_VLE_LO16A
: r
= R_PPC_VLE_LO16A
; break;
1976 case BFD_RELOC_PPC_VLE_LO16D
: r
= R_PPC_VLE_LO16D
; break;
1977 case BFD_RELOC_PPC_VLE_HI16A
: r
= R_PPC_VLE_HI16A
; break;
1978 case BFD_RELOC_PPC_VLE_HI16D
: r
= R_PPC_VLE_HI16D
; break;
1979 case BFD_RELOC_PPC_VLE_HA16A
: r
= R_PPC_VLE_HA16A
; break;
1980 case BFD_RELOC_PPC_VLE_HA16D
: r
= R_PPC_VLE_HA16D
; break;
1981 case BFD_RELOC_PPC_VLE_SDA21
: r
= R_PPC_VLE_SDA21
; break;
1982 case BFD_RELOC_PPC_VLE_SDA21_LO
: r
= R_PPC_VLE_SDA21_LO
; break;
1983 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
1984 r
= R_PPC_VLE_SDAREL_LO16A
;
1986 case BFD_RELOC_PPC_VLE_SDAREL_LO16D
:
1987 r
= R_PPC_VLE_SDAREL_LO16D
;
1989 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
1990 r
= R_PPC_VLE_SDAREL_HI16A
;
1992 case BFD_RELOC_PPC_VLE_SDAREL_HI16D
:
1993 r
= R_PPC_VLE_SDAREL_HI16D
;
1995 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
1996 r
= R_PPC_VLE_SDAREL_HA16A
;
1998 case BFD_RELOC_PPC_VLE_SDAREL_HA16D
:
1999 r
= R_PPC_VLE_SDAREL_HA16D
;
2001 case BFD_RELOC_16_PCREL
: r
= R_PPC_REL16
; break;
2002 case BFD_RELOC_LO16_PCREL
: r
= R_PPC_REL16_LO
; break;
2003 case BFD_RELOC_HI16_PCREL
: r
= R_PPC_REL16_HI
; break;
2004 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC_REL16_HA
; break;
2005 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC_REL16DX_HA
; break;
2006 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
2007 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
2010 return ppc_elf_howto_table
[r
];
2013 static reloc_howto_type
*
2014 ppc_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2020 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
2022 if (ppc_elf_howto_raw
[i
].name
!= NULL
2023 && strcasecmp (ppc_elf_howto_raw
[i
].name
, r_name
) == 0)
2024 return &ppc_elf_howto_raw
[i
];
2029 /* Set the howto pointer for a PowerPC ELF reloc. */
2032 ppc_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
2034 Elf_Internal_Rela
*dst
)
2036 unsigned int r_type
;
2038 /* Initialize howto table if not already done. */
2039 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
2040 ppc_elf_howto_init ();
2042 r_type
= ELF32_R_TYPE (dst
->r_info
);
2043 if (r_type
>= R_PPC_max
)
2045 /* xgettext:c-format */
2046 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2048 bfd_set_error (bfd_error_bad_value
);
2049 r_type
= R_PPC_NONE
;
2051 cache_ptr
->howto
= ppc_elf_howto_table
[r_type
];
2053 /* Just because the above assert didn't trigger doesn't mean that
2054 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2055 if (!cache_ptr
->howto
)
2057 /* xgettext:c-format */
2058 _bfd_error_handler (_("%B: invalid relocation type %d"),
2060 bfd_set_error (bfd_error_bad_value
);
2062 cache_ptr
->howto
= ppc_elf_howto_table
[R_PPC_NONE
];
2066 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2068 static bfd_reloc_status_type
2069 ppc_elf_addr16_ha_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
2070 arelent
*reloc_entry
,
2072 void *data ATTRIBUTE_UNUSED
,
2073 asection
*input_section
,
2075 char **error_message ATTRIBUTE_UNUSED
)
2077 enum elf_ppc_reloc_type r_type
;
2079 bfd_size_type octets
;
2082 if (output_bfd
!= NULL
)
2084 reloc_entry
->address
+= input_section
->output_offset
;
2085 return bfd_reloc_ok
;
2088 reloc_entry
->addend
+= 0x8000;
2089 r_type
= reloc_entry
->howto
->type
;
2090 if (r_type
!= R_PPC_REL16DX_HA
)
2091 return bfd_reloc_continue
;
2094 if (!bfd_is_com_section (symbol
->section
))
2095 value
= symbol
->value
;
2096 value
+= (reloc_entry
->addend
2097 + symbol
->section
->output_offset
2098 + symbol
->section
->output_section
->vma
);
2099 value
-= (reloc_entry
->address
2100 + input_section
->output_offset
2101 + input_section
->output_section
->vma
);
2104 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2105 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2107 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2108 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2109 return bfd_reloc_ok
;
2112 static bfd_reloc_status_type
2113 ppc_elf_unhandled_reloc (bfd
*abfd
,
2114 arelent
*reloc_entry
,
2117 asection
*input_section
,
2119 char **error_message
)
2121 /* If this is a relocatable link (output_bfd test tells us), just
2122 call the generic function. Any adjustment will be done at final
2124 if (output_bfd
!= NULL
)
2125 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2126 input_section
, output_bfd
, error_message
);
2128 if (error_message
!= NULL
)
2130 static char buf
[60];
2131 sprintf (buf
, _("generic linker can't handle %s"),
2132 reloc_entry
->howto
->name
);
2133 *error_message
= buf
;
2135 return bfd_reloc_dangerous
;
2138 /* Sections created by the linker. */
2140 typedef struct elf_linker_section
2142 /* Pointer to the bfd section. */
2146 /* Associated bss section name. */
2147 const char *bss_name
;
2148 /* Associated symbol name. */
2149 const char *sym_name
;
2150 /* Associated symbol. */
2151 struct elf_link_hash_entry
*sym
;
2152 } elf_linker_section_t
;
2154 /* Linked list of allocated pointer entries. This hangs off of the
2155 symbol lists, and provides allows us to return different pointers,
2156 based on different addend's. */
2158 typedef struct elf_linker_section_pointers
2160 /* next allocated pointer for this symbol */
2161 struct elf_linker_section_pointers
*next
;
2162 /* offset of pointer from beginning of section */
2166 /* which linker section this is */
2167 elf_linker_section_t
*lsect
;
2168 } elf_linker_section_pointers_t
;
2170 struct ppc_elf_obj_tdata
2172 struct elf_obj_tdata elf
;
2174 /* A mapping from local symbols to offsets into the various linker
2175 sections added. This is index by the symbol index. */
2176 elf_linker_section_pointers_t
**linker_section_pointers
;
2178 /* Flags used to auto-detect plt type. */
2179 unsigned int makes_plt_call
: 1;
2180 unsigned int has_rel16
: 1;
2183 #define ppc_elf_tdata(bfd) \
2184 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2186 #define elf_local_ptr_offsets(bfd) \
2187 (ppc_elf_tdata (bfd)->linker_section_pointers)
2189 #define is_ppc_elf(bfd) \
2190 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2191 && elf_object_id (bfd) == PPC32_ELF_DATA)
2193 /* Override the generic function because we store some extras. */
2196 ppc_elf_mkobject (bfd
*abfd
)
2198 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
2202 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2205 _bfd_elf_ppc_set_arch (bfd
*abfd
)
2207 unsigned long mach
= 0;
2209 unsigned char *contents
;
2211 if (abfd
->arch_info
->bits_per_word
== 32
2212 && bfd_big_endian (abfd
))
2215 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2216 if ((elf_section_data (s
)->this_hdr
.sh_flags
& SHF_PPC_VLE
) != 0)
2219 mach
= bfd_mach_ppc_vle
;
2224 s
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2225 if (s
!= NULL
&& bfd_malloc_and_get_section (abfd
, s
, &contents
))
2227 unsigned int apuinfo_size
= bfd_get_32 (abfd
, contents
+ 4);
2230 for (i
= 20; i
< apuinfo_size
+ 20 && i
+ 4 <= s
->size
; i
+= 4)
2232 unsigned int val
= bfd_get_32 (abfd
, contents
+ i
);
2235 case PPC_APUINFO_PMR
:
2236 case PPC_APUINFO_RFMCI
:
2238 mach
= bfd_mach_ppc_titan
;
2241 case PPC_APUINFO_ISEL
:
2242 case PPC_APUINFO_CACHELCK
:
2243 if (mach
== bfd_mach_ppc_titan
)
2244 mach
= bfd_mach_ppc_e500mc
;
2247 case PPC_APUINFO_SPE
:
2248 case PPC_APUINFO_EFS
:
2249 case PPC_APUINFO_BRLOCK
:
2250 if (mach
!= bfd_mach_ppc_vle
)
2251 mach
= bfd_mach_ppc_e500
;
2254 case PPC_APUINFO_VLE
:
2255 mach
= bfd_mach_ppc_vle
;
2266 if (mach
!= 0 && mach
!= -1ul)
2268 const bfd_arch_info_type
*arch
;
2270 for (arch
= abfd
->arch_info
->next
; arch
; arch
= arch
->next
)
2271 if (arch
->mach
== mach
)
2273 abfd
->arch_info
= arch
;
2280 /* Fix bad default arch selected for a 32 bit input bfd when the
2281 default is 64 bit. Also select arch based on apuinfo. */
2284 ppc_elf_object_p (bfd
*abfd
)
2286 if (!abfd
->arch_info
->the_default
)
2289 if (abfd
->arch_info
->bits_per_word
== 64)
2291 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2293 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
2295 /* Relies on arch after 64 bit default being 32 bit default. */
2296 abfd
->arch_info
= abfd
->arch_info
->next
;
2297 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
2300 return _bfd_elf_ppc_set_arch (abfd
);
2303 /* Function to set whether a module needs the -mrelocatable bit set. */
2306 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2308 BFD_ASSERT (!elf_flags_init (abfd
)
2309 || elf_elfheader (abfd
)->e_flags
== flags
);
2311 elf_elfheader (abfd
)->e_flags
= flags
;
2312 elf_flags_init (abfd
) = TRUE
;
2316 /* Support for core dump NOTE sections. */
2319 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2324 switch (note
->descsz
)
2329 case 268: /* Linux/PPC. */
2331 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2334 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
2343 /* Make a ".reg/999" section. */
2344 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2345 size
, note
->descpos
+ offset
);
2349 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2351 switch (note
->descsz
)
2356 case 128: /* Linux/PPC elf_prpsinfo. */
2357 elf_tdata (abfd
)->core
->pid
2358 = bfd_get_32 (abfd
, note
->descdata
+ 16);
2359 elf_tdata (abfd
)->core
->program
2360 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
2361 elf_tdata (abfd
)->core
->command
2362 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
2365 /* Note that for some reason, a spurious space is tacked
2366 onto the end of the args in some (at least one anyway)
2367 implementations, so strip it off if it exists. */
2370 char *command
= elf_tdata (abfd
)->core
->command
;
2371 int n
= strlen (command
);
2373 if (0 < n
&& command
[n
- 1] == ' ')
2374 command
[n
- 1] = '\0';
2381 elfcore_write_ppc_linux_prpsinfo32
2385 const struct elf_internal_linux_prpsinfo
*prpsinfo
)
2387 struct elf_external_ppc_linux_prpsinfo32 data
;
2389 swap_ppc_linux_prpsinfo32_out (abfd
, prpsinfo
, &data
);
2390 return elfcore_write_note (abfd
, buf
, bufsiz
,
2391 "CORE", NT_PRPSINFO
, &data
, sizeof (data
));
2395 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
2407 va_start (ap
, note_type
);
2408 memset (data
, 0, sizeof (data
));
2409 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
2410 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
2412 return elfcore_write_note (abfd
, buf
, bufsiz
,
2413 "CORE", note_type
, data
, sizeof (data
));
2424 va_start (ap
, note_type
);
2425 memset (data
, 0, 72);
2426 pid
= va_arg (ap
, long);
2427 bfd_put_32 (abfd
, pid
, data
+ 24);
2428 cursig
= va_arg (ap
, int);
2429 bfd_put_16 (abfd
, cursig
, data
+ 12);
2430 greg
= va_arg (ap
, const void *);
2431 memcpy (data
+ 72, greg
, 192);
2432 memset (data
+ 264, 0, 4);
2434 return elfcore_write_note (abfd
, buf
, bufsiz
,
2435 "CORE", note_type
, data
, sizeof (data
));
2441 ppc_elf_lookup_section_flags (char *flag_name
)
2444 if (!strcmp (flag_name
, "SHF_PPC_VLE"))
2450 /* Return address for Ith PLT stub in section PLT, for relocation REL
2451 or (bfd_vma) -1 if it should not be included. */
2454 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
2455 const asection
*plt ATTRIBUTE_UNUSED
,
2458 return rel
->address
;
2461 /* Handle a PowerPC specific section when reading an object file. This
2462 is called when bfd_section_from_shdr finds a section with an unknown
2466 ppc_elf_section_from_shdr (bfd
*abfd
,
2467 Elf_Internal_Shdr
*hdr
,
2474 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
2477 newsect
= hdr
->bfd_section
;
2478 flags
= bfd_get_section_flags (abfd
, newsect
);
2479 if (hdr
->sh_flags
& SHF_EXCLUDE
)
2480 flags
|= SEC_EXCLUDE
;
2482 if (hdr
->sh_type
== SHT_ORDERED
)
2483 flags
|= SEC_SORT_ENTRIES
;
2485 bfd_set_section_flags (abfd
, newsect
, flags
);
2489 /* Set up any other section flags and such that may be necessary. */
2492 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
2493 Elf_Internal_Shdr
*shdr
,
2496 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
2497 shdr
->sh_type
= SHT_ORDERED
;
2502 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2503 need to bump up the number of section headers. */
2506 ppc_elf_additional_program_headers (bfd
*abfd
,
2507 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2512 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2513 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2516 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2517 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2523 /* Modify the segment map for VLE executables. */
2526 ppc_elf_modify_segment_map (bfd
*abfd
,
2527 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2529 struct elf_segment_map
*m
;
2531 /* At this point in the link, output sections have already been sorted by
2532 LMA and assigned to segments. All that is left to do is to ensure
2533 there is no mixing of VLE & non-VLE sections in a text segment.
2534 If we find that case, we split the segment.
2535 We maintain the original output section order. */
2537 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
2539 struct elf_segment_map
*n
;
2542 unsigned int p_flags
;
2544 if (m
->p_type
!= PT_LOAD
|| m
->count
== 0)
2547 for (p_flags
= PF_R
, j
= 0; j
!= m
->count
; ++j
)
2549 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2551 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2554 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2555 p_flags
|= PF_PPC_VLE
;
2560 while (++j
!= m
->count
)
2562 unsigned int p_flags1
= PF_R
;
2564 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2566 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2569 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2570 p_flags1
|= PF_PPC_VLE
;
2571 if (((p_flags1
^ p_flags
) & PF_PPC_VLE
) != 0)
2574 p_flags
|= p_flags1
;
2576 /* If we're splitting a segment which originally contained rw
2577 sections then those sections might now only be in one of the
2578 two parts. So always set p_flags if splitting, even if we
2579 are being called for objcopy with p_flags_valid set. */
2580 if (j
!= m
->count
|| !m
->p_flags_valid
)
2582 m
->p_flags_valid
= 1;
2583 m
->p_flags
= p_flags
;
2588 /* Sections 0..j-1 stay in this (current) segment,
2589 the remainder are put in a new segment.
2590 The scan resumes with the new segment. */
2592 amt
= sizeof (struct elf_segment_map
);
2593 amt
+= (m
->count
- j
- 1) * sizeof (asection
*);
2594 n
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2598 n
->p_type
= PT_LOAD
;
2599 n
->count
= m
->count
- j
;
2600 for (k
= 0; k
< n
->count
; ++k
)
2601 n
->sections
[k
] = m
->sections
[j
+ k
];
2603 m
->p_size_valid
= 0;
2611 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2612 .PPC.EMB.sbss0 a normal section, and not a bss section so
2613 that the linker doesn't crater when trying to make more than
2616 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
2618 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
2619 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2620 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2621 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2622 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2623 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
2624 { STRING_COMMA_LEN (APUINFO_SECTION_NAME
), 0, SHT_NOTE
, 0 },
2625 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2626 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2627 { NULL
, 0, 0, 0, 0 }
2630 /* This is what we want for new plt/got. */
2631 static struct bfd_elf_special_section ppc_alt_plt
=
2632 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
2634 static const struct bfd_elf_special_section
*
2635 ppc_elf_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
2637 const struct bfd_elf_special_section
*ssect
;
2639 /* See if this is one of the special sections. */
2640 if (sec
->name
== NULL
)
2643 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2647 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2648 ssect
= &ppc_alt_plt
;
2652 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2655 /* Very simple linked list structure for recording apuinfo values. */
2656 typedef struct apuinfo_list
2658 struct apuinfo_list
*next
;
2659 unsigned long value
;
2663 static apuinfo_list
*head
;
2664 static bfd_boolean apuinfo_set
;
2667 apuinfo_list_init (void)
2670 apuinfo_set
= FALSE
;
2674 apuinfo_list_add (unsigned long value
)
2676 apuinfo_list
*entry
= head
;
2678 while (entry
!= NULL
)
2680 if (entry
->value
== value
)
2682 entry
= entry
->next
;
2685 entry
= bfd_malloc (sizeof (* entry
));
2689 entry
->value
= value
;
2695 apuinfo_list_length (void)
2697 apuinfo_list
*entry
;
2698 unsigned long count
;
2700 for (entry
= head
, count
= 0;
2702 entry
= entry
->next
)
2708 static inline unsigned long
2709 apuinfo_list_element (unsigned long number
)
2711 apuinfo_list
* entry
;
2715 entry
= entry
->next
)
2718 return entry
? entry
->value
: 0;
2722 apuinfo_list_finish (void)
2724 apuinfo_list
*entry
;
2726 for (entry
= head
; entry
;)
2728 apuinfo_list
*next
= entry
->next
;
2736 /* Scan the input BFDs and create a linked list of
2737 the APUinfo values that will need to be emitted. */
2740 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2744 char *buffer
= NULL
;
2745 bfd_size_type largest_input_size
= 0;
2747 unsigned long length
;
2748 const char *error_message
= NULL
;
2750 if (link_info
== NULL
)
2753 apuinfo_list_init ();
2755 /* Read in the input sections contents. */
2756 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
2758 unsigned long datum
;
2760 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2764 /* xgettext:c-format */
2765 error_message
= _("corrupt %s section in %B");
2766 length
= asec
->size
;
2771 if (largest_input_size
< asec
->size
)
2775 largest_input_size
= asec
->size
;
2776 buffer
= bfd_malloc (largest_input_size
);
2781 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2782 || (bfd_bread (buffer
, length
, ibfd
) != length
))
2784 /* xgettext:c-format */
2785 error_message
= _("unable to read in %s section from %B");
2789 /* Verify the contents of the header. Note - we have to
2790 extract the values this way in order to allow for a
2791 host whose endian-ness is different from the target. */
2792 datum
= bfd_get_32 (ibfd
, buffer
);
2793 if (datum
!= sizeof APUINFO_LABEL
)
2796 datum
= bfd_get_32 (ibfd
, buffer
+ 8);
2800 if (strcmp (buffer
+ 12, APUINFO_LABEL
) != 0)
2803 /* Get the number of bytes used for apuinfo entries. */
2804 datum
= bfd_get_32 (ibfd
, buffer
+ 4);
2805 if (datum
+ 20 != length
)
2808 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2809 for (i
= 0; i
< datum
; i
+= 4)
2810 apuinfo_list_add (bfd_get_32 (ibfd
, buffer
+ 20 + i
));
2813 error_message
= NULL
;
2817 /* Compute the size of the output section. */
2818 unsigned num_entries
= apuinfo_list_length ();
2820 /* Set the output section size, if it exists. */
2821 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2823 if (asec
&& ! bfd_set_section_size (abfd
, asec
, 20 + num_entries
* 4))
2826 /* xgettext:c-format */
2827 error_message
= _("warning: unable to set size of %s section in %B");
2836 _bfd_error_handler (error_message
, ibfd
, APUINFO_SECTION_NAME
);
2839 /* Prevent the output section from accumulating the input sections'
2840 contents. We have already stored this in our linked list structure. */
2843 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2844 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2846 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2848 return apuinfo_set
&& strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0;
2851 /* Finally we can generate the output section. */
2854 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2859 unsigned num_entries
;
2860 bfd_size_type length
;
2862 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2869 length
= asec
->size
;
2873 buffer
= bfd_malloc (length
);
2877 (_("failed to allocate space for new APUinfo section."));
2881 /* Create the apuinfo header. */
2882 num_entries
= apuinfo_list_length ();
2883 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2884 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2885 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2886 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2889 for (i
= 0; i
< num_entries
; i
++)
2891 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2895 if (length
!= asec
->size
)
2896 _bfd_error_handler (_("failed to compute new APUinfo section."));
2898 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2899 _bfd_error_handler (_("failed to install new APUinfo section."));
2903 apuinfo_list_finish ();
2907 is_nonpic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2909 bfd_byte buf
[GLINK_ENTRY_SIZE
];
2911 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, GLINK_ENTRY_SIZE
))
2914 return ((bfd_get_32 (abfd
, buf
+ 0) & 0xffff0000) == LIS_11
2915 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2916 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
2917 && bfd_get_32 (abfd
, buf
+ 12) == BCTR
);
2921 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2923 bfd_vma vma
= *(bfd_vma
*) ptr
;
2924 return ((section
->flags
& SEC_ALLOC
) != 0
2925 && section
->vma
<= vma
2926 && vma
< section
->vma
+ section
->size
);
2930 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2931 long dynsymcount
, asymbol
**dynsyms
,
2934 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2935 asection
*plt
, *relplt
, *dynamic
, *glink
;
2936 bfd_vma glink_vma
= 0;
2937 bfd_vma resolv_vma
= 0;
2948 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2951 if (dynsymcount
<= 0)
2954 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2958 plt
= bfd_get_section_by_name (abfd
, ".plt");
2962 /* Call common code to handle old-style executable PLTs. */
2963 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2964 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2965 dynsymcount
, dynsyms
, ret
);
2967 /* If this object was prelinked, the prelinker stored the address
2968 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2969 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2970 if (dynamic
!= NULL
)
2972 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2974 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2976 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2979 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2980 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2983 extdynend
= extdyn
+ dynamic
->size
;
2984 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2986 Elf_Internal_Dyn dyn
;
2987 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2989 if (dyn
.d_tag
== DT_NULL
)
2992 if (dyn
.d_tag
== DT_PPC_GOT
)
2994 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2995 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2997 && bfd_get_section_contents (abfd
, got
, buf
,
2998 g_o_t
- got
->vma
+ 4, 4))
2999 glink_vma
= bfd_get_32 (abfd
, buf
);
3006 /* Otherwise we read the first plt entry. */
3009 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
3010 glink_vma
= bfd_get_32 (abfd
, buf
);
3016 /* The .glink section usually does not survive the final
3017 link; search for the section (usually .text) where the
3018 glink stubs now reside. */
3019 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
3023 /* Determine glink PLT resolver by reading the relative branch
3024 from the first glink stub. */
3025 if (bfd_get_section_contents (abfd
, glink
, buf
,
3026 glink_vma
- glink
->vma
, 4))
3028 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3030 /* The first glink stub may either branch to the resolver ... */
3032 if ((insn
& ~0x3fffffc) == 0)
3033 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
3035 /* ... or fall through a bunch of NOPs. */
3036 else if ((insn
^ B
^ NOP
) == 0)
3038 bfd_get_section_contents (abfd
, glink
, buf
,
3039 glink_vma
- glink
->vma
+ i
, 4);
3041 if (bfd_get_32 (abfd
, buf
) != NOP
)
3043 resolv_vma
= glink_vma
+ i
;
3048 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
3049 /* If the stubs are those for -shared/-pie then we might have
3050 multiple stubs for each plt entry. If that is the case then
3051 there is no way to associate stubs with their plt entries short
3052 of figuring out the GOT pointer value used in the stub. */
3053 if (!is_nonpic_glink_stub (abfd
, glink
,
3054 glink_vma
- GLINK_ENTRY_SIZE
- glink
->vma
))
3057 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3058 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
3061 size
= count
* sizeof (asymbol
);
3062 p
= relplt
->relocation
;
3063 for (i
= 0; i
< count
; i
++, p
++)
3065 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3067 size
+= sizeof ("+0x") - 1 + 8;
3070 size
+= sizeof (asymbol
) + sizeof ("__glink");
3073 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3075 s
= *ret
= bfd_malloc (size
);
3079 stub_vma
= glink_vma
;
3080 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
3081 p
= relplt
->relocation
+ count
- 1;
3082 for (i
= 0; i
< count
; i
++)
3086 *s
= **p
->sym_ptr_ptr
;
3087 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3088 we are defining a symbol, ensure one of them is set. */
3089 if ((s
->flags
& BSF_LOCAL
) == 0)
3090 s
->flags
|= BSF_GLOBAL
;
3091 s
->flags
|= BSF_SYNTHETIC
;
3094 if (strcmp ((*p
->sym_ptr_ptr
)->name
, "__tls_get_addr_opt") == 0)
3096 s
->value
= stub_vma
- glink
->vma
;
3099 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3100 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3104 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3105 names
+= sizeof ("+0x") - 1;
3106 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3107 names
+= strlen (names
);
3109 memcpy (names
, "@plt", sizeof ("@plt"));
3110 names
+= sizeof ("@plt");
3115 /* Add a symbol at the start of the glink branch table. */
3116 memset (s
, 0, sizeof *s
);
3118 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3120 s
->value
= glink_vma
- glink
->vma
;
3122 memcpy (names
, "__glink", sizeof ("__glink"));
3123 names
+= sizeof ("__glink");
3129 /* Add a symbol for the glink PLT resolver. */
3130 memset (s
, 0, sizeof *s
);
3132 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3134 s
->value
= resolv_vma
- glink
->vma
;
3136 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3137 names
+= sizeof ("__glink_PLTresolve");
3145 /* The following functions are specific to the ELF linker, while
3146 functions above are used generally. They appear in this file more
3147 or less in the order in which they are called. eg.
3148 ppc_elf_check_relocs is called early in the link process,
3149 ppc_elf_finish_dynamic_sections is one of the last functions
3152 /* Track PLT entries needed for a given symbol. We might need more
3153 than one glink entry per symbol when generating a pic binary. */
3156 struct plt_entry
*next
;
3158 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3159 This field stores the offset into .got2 used to initialise the
3160 GOT pointer reg. It will always be at least 32768. (Current
3161 gcc always uses an offset of 32768, but ld -r will pack .got2
3162 sections together resulting in larger offsets). */
3165 /* The .got2 section. */
3168 /* PLT refcount or offset. */
3171 bfd_signed_vma refcount
;
3175 /* .glink stub offset. */
3176 bfd_vma glink_offset
;
3179 /* Of those relocs that might be copied as dynamic relocs, this function
3180 selects those that must be copied when linking a shared library,
3181 even when the symbol is local. */
3184 must_be_dyn_reloc (struct bfd_link_info
*info
,
3185 enum elf_ppc_reloc_type r_type
)
3194 case R_PPC_REL14_BRTAKEN
:
3195 case R_PPC_REL14_BRNTAKEN
:
3201 case R_PPC_TPREL16_LO
:
3202 case R_PPC_TPREL16_HI
:
3203 case R_PPC_TPREL16_HA
:
3204 return !bfd_link_executable (info
);
3208 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3209 copying dynamic variables from a shared lib into an app's dynbss
3210 section, and instead use a dynamic relocation to point into the
3212 #define ELIMINATE_COPY_RELOCS 1
3214 /* Used to track dynamic relocations for local symbols. */
3215 struct ppc_dyn_relocs
3217 struct ppc_dyn_relocs
*next
;
3219 /* The input section of the reloc. */
3222 /* Total number of relocs copied for the input section. */
3223 unsigned int count
: 31;
3225 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3226 unsigned int ifunc
: 1;
3229 /* PPC ELF linker hash entry. */
3231 struct ppc_elf_link_hash_entry
3233 struct elf_link_hash_entry elf
;
3235 /* If this symbol is used in the linker created sections, the processor
3236 specific backend uses this field to map the field into the offset
3237 from the beginning of the section. */
3238 elf_linker_section_pointers_t
*linker_section_pointer
;
3240 /* Track dynamic relocs copied for this symbol. */
3241 struct elf_dyn_relocs
*dyn_relocs
;
3243 /* Contexts in which symbol is used in the GOT (or TOC).
3244 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3245 corresponding relocs are encountered during check_relocs.
3246 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3247 indicate the corresponding GOT entry type is not needed. */
3248 #define TLS_GD 1 /* GD reloc. */
3249 #define TLS_LD 2 /* LD reloc. */
3250 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3251 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3252 #define TLS_TLS 16 /* Any TLS reloc. */
3253 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3254 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3257 /* Nonzero if we have seen a small data relocation referring to this
3259 unsigned char has_sda_refs
: 1;
3261 /* Flag use of given relocations. */
3262 unsigned char has_addr16_ha
: 1;
3263 unsigned char has_addr16_lo
: 1;
3266 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3268 /* PPC ELF linker hash table. */
3270 struct ppc_elf_link_hash_table
3272 struct elf_link_hash_table elf
;
3274 /* Various options passed from the linker. */
3275 struct ppc_elf_params
*params
;
3277 /* Short-cuts to get to dynamic linker sections. */
3289 elf_linker_section_t sdata
[2];
3291 asection
*glink_eh_frame
;
3293 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3296 /* The .got.plt section (VxWorks only)*/
3299 /* Shortcut to __tls_get_addr. */
3300 struct elf_link_hash_entry
*tls_get_addr
;
3302 /* The bfd that forced an old-style PLT. */
3305 /* TLS local dynamic got entry handling. */
3307 bfd_signed_vma refcount
;
3311 /* Offset of branch table to PltResolve function in glink. */
3312 bfd_vma glink_pltresolve
;
3314 /* Size of reserved GOT entries. */
3315 unsigned int got_header_size
;
3316 /* Non-zero if allocating the header left a gap. */
3317 unsigned int got_gap
;
3319 /* The type of PLT we have chosen to use. */
3320 enum ppc_elf_plt_type plt_type
;
3322 /* True if the target system is VxWorks. */
3323 unsigned int is_vxworks
:1;
3325 /* The size of PLT entries. */
3327 /* The distance between adjacent PLT slots. */
3329 /* The size of the first PLT entry. */
3330 int plt_initial_entry_size
;
3332 /* Small local sym cache. */
3333 struct sym_cache sym_cache
;
3336 /* Rename some of the generic section flags to better document how they
3337 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3339 /* Nonzero if this section has TLS related relocations. */
3340 #define has_tls_reloc sec_flg0
3342 /* Nonzero if this section has a call to __tls_get_addr. */
3343 #define has_tls_get_addr_call sec_flg1
3345 /* Get the PPC ELF linker hash table from a link_info structure. */
3347 #define ppc_elf_hash_table(p) \
3348 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3349 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3351 /* Create an entry in a PPC ELF linker hash table. */
3353 static struct bfd_hash_entry
*
3354 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3355 struct bfd_hash_table
*table
,
3358 /* Allocate the structure if it has not already been allocated by a
3362 entry
= bfd_hash_allocate (table
,
3363 sizeof (struct ppc_elf_link_hash_entry
));
3368 /* Call the allocation method of the superclass. */
3369 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3372 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
3373 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
3374 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
3375 ppc_elf_hash_entry (entry
)->has_sda_refs
= 0;
3381 /* Create a PPC ELF linker hash table. */
3383 static struct bfd_link_hash_table
*
3384 ppc_elf_link_hash_table_create (bfd
*abfd
)
3386 struct ppc_elf_link_hash_table
*ret
;
3387 static struct ppc_elf_params default_params
3388 = { PLT_OLD
, 0, 1, 0, 0, 12, 0, 0, 0 };
3390 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
3394 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
3395 ppc_elf_link_hash_newfunc
,
3396 sizeof (struct ppc_elf_link_hash_entry
),
3403 ret
->elf
.init_plt_refcount
.refcount
= 0;
3404 ret
->elf
.init_plt_refcount
.glist
= NULL
;
3405 ret
->elf
.init_plt_offset
.offset
= 0;
3406 ret
->elf
.init_plt_offset
.glist
= NULL
;
3408 ret
->params
= &default_params
;
3410 ret
->sdata
[0].name
= ".sdata";
3411 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
3412 ret
->sdata
[0].bss_name
= ".sbss";
3414 ret
->sdata
[1].name
= ".sdata2";
3415 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
3416 ret
->sdata
[1].bss_name
= ".sbss2";
3418 ret
->plt_entry_size
= 12;
3419 ret
->plt_slot_size
= 8;
3420 ret
->plt_initial_entry_size
= 72;
3422 return &ret
->elf
.root
;
3425 /* Hook linker params into hash table. */
3428 ppc_elf_link_params (struct bfd_link_info
*info
, struct ppc_elf_params
*params
)
3430 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3433 htab
->params
= params
;
3434 params
->pagesize_p2
= bfd_log2 (params
->pagesize
);
3437 /* Create .got and the related sections. */
3440 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
3442 struct ppc_elf_link_hash_table
*htab
;
3446 if (!_bfd_elf_create_got_section (abfd
, info
))
3449 htab
= ppc_elf_hash_table (info
);
3450 htab
->got
= s
= bfd_get_linker_section (abfd
, ".got");
3454 if (htab
->is_vxworks
)
3456 htab
->sgotplt
= bfd_get_linker_section (abfd
, ".got.plt");
3462 /* The powerpc .got has a blrl instruction in it. Mark it
3464 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
3465 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3466 if (!bfd_set_section_flags (abfd
, s
, flags
))
3470 htab
->relgot
= bfd_get_linker_section (abfd
, ".rela.got");
3477 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3478 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3479 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3482 ppc_elf_create_linker_section (bfd
*abfd
,
3483 struct bfd_link_info
*info
,
3485 elf_linker_section_t
*lsect
)
3489 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3490 | SEC_LINKER_CREATED
);
3492 s
= bfd_make_section_anyway_with_flags (abfd
, lsect
->name
, flags
);
3497 /* Define the sym on the first section of this name. */
3498 s
= bfd_get_section_by_name (abfd
, lsect
->name
);
3500 lsect
->sym
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, lsect
->sym_name
);
3501 if (lsect
->sym
== NULL
)
3503 lsect
->sym
->root
.u
.def
.value
= 0x8000;
3508 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
3510 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3514 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
3515 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3516 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
3519 || !bfd_set_section_alignment (abfd
, s
,
3520 htab
->params
->ppc476_workaround
? 6 : 4))
3523 if (!info
->no_ld_generated_unwind_info
)
3525 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3526 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3527 s
= bfd_make_section_anyway_with_flags (abfd
, ".eh_frame", flags
);
3528 htab
->glink_eh_frame
= s
;
3530 || !bfd_set_section_alignment (abfd
, s
, 2))
3534 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
3535 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
3538 || !bfd_set_section_alignment (abfd
, s
, 4))
3541 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3542 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3543 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.iplt", flags
);
3546 || ! bfd_set_section_alignment (abfd
, s
, 2))
3549 if (!ppc_elf_create_linker_section (abfd
, info
, 0,
3553 if (!ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3560 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3561 to output sections (just like _bfd_elf_create_dynamic_sections has
3562 to create .dynbss and .rela.bss). */
3565 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3567 struct ppc_elf_link_hash_table
*htab
;
3571 htab
= ppc_elf_hash_table (info
);
3573 if (htab
->got
== NULL
3574 && !ppc_elf_create_got (abfd
, info
))
3577 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
3580 if (htab
->glink
== NULL
3581 && !ppc_elf_create_glink (abfd
, info
))
3584 htab
->dynbss
= bfd_get_linker_section (abfd
, ".dynbss");
3585 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynsbss",
3586 SEC_ALLOC
| SEC_LINKER_CREATED
);
3591 if (! bfd_link_pic (info
))
3593 htab
->relbss
= bfd_get_linker_section (abfd
, ".rela.bss");
3594 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3595 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3596 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.sbss", flags
);
3599 || ! bfd_set_section_alignment (abfd
, s
, 2))
3603 if (htab
->is_vxworks
3604 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
3607 htab
->relplt
= bfd_get_linker_section (abfd
, ".rela.plt");
3608 htab
->plt
= s
= bfd_get_linker_section (abfd
, ".plt");
3612 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
3613 if (htab
->plt_type
== PLT_VXWORKS
)
3614 /* The VxWorks PLT is a loaded section with contents. */
3615 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3616 return bfd_set_section_flags (abfd
, s
, flags
);
3619 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3622 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3623 struct elf_link_hash_entry
*dir
,
3624 struct elf_link_hash_entry
*ind
)
3626 struct ppc_elf_link_hash_entry
*edir
, *eind
;
3628 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
3629 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
3631 edir
->tls_mask
|= eind
->tls_mask
;
3632 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3634 /* If called to transfer flags for a weakdef during processing
3635 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3636 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3637 if (!(ELIMINATE_COPY_RELOCS
3638 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3639 && edir
->elf
.dynamic_adjusted
))
3640 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3642 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3643 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3644 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3645 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3646 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3648 if (eind
->dyn_relocs
!= NULL
)
3650 if (edir
->dyn_relocs
!= NULL
)
3652 struct elf_dyn_relocs
**pp
;
3653 struct elf_dyn_relocs
*p
;
3655 /* Add reloc counts against the indirect sym to the direct sym
3656 list. Merge any entries against the same section. */
3657 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3659 struct elf_dyn_relocs
*q
;
3661 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3662 if (q
->sec
== p
->sec
)
3664 q
->pc_count
+= p
->pc_count
;
3665 q
->count
+= p
->count
;
3672 *pp
= edir
->dyn_relocs
;
3675 edir
->dyn_relocs
= eind
->dyn_relocs
;
3676 eind
->dyn_relocs
= NULL
;
3679 /* If we were called to copy over info for a weak sym, that's all.
3680 You might think dyn_relocs need not be copied over; After all,
3681 both syms will be dynamic or both non-dynamic so we're just
3682 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3683 code in ppc_elf_adjust_dynamic_symbol needs to check for
3684 dyn_relocs in read-only sections, and it does so on what is the
3686 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3689 /* Copy over the GOT refcount entries that we may have already seen to
3690 the symbol which just became indirect. */
3691 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3692 eind
->elf
.got
.refcount
= 0;
3694 /* And plt entries. */
3695 if (eind
->elf
.plt
.plist
!= NULL
)
3697 if (edir
->elf
.plt
.plist
!= NULL
)
3699 struct plt_entry
**entp
;
3700 struct plt_entry
*ent
;
3702 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3704 struct plt_entry
*dent
;
3706 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3707 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3709 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3716 *entp
= edir
->elf
.plt
.plist
;
3719 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3720 eind
->elf
.plt
.plist
= NULL
;
3723 if (eind
->elf
.dynindx
!= -1)
3725 if (edir
->elf
.dynindx
!= -1)
3726 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3727 edir
->elf
.dynstr_index
);
3728 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3729 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3730 eind
->elf
.dynindx
= -1;
3731 eind
->elf
.dynstr_index
= 0;
3735 /* Hook called by the linker routine which adds symbols from an object
3736 file. We use it to put .comm items in .sbss, and not .bss. */
3739 ppc_elf_add_symbol_hook (bfd
*abfd
,
3740 struct bfd_link_info
*info
,
3741 Elf_Internal_Sym
*sym
,
3742 const char **namep ATTRIBUTE_UNUSED
,
3743 flagword
*flagsp ATTRIBUTE_UNUSED
,
3747 if (sym
->st_shndx
== SHN_COMMON
3748 && !bfd_link_relocatable (info
)
3749 && is_ppc_elf (info
->output_bfd
)
3750 && sym
->st_size
<= elf_gp_size (abfd
))
3752 /* Common symbols less than or equal to -G nn bytes are automatically
3754 struct ppc_elf_link_hash_table
*htab
;
3756 htab
= ppc_elf_hash_table (info
);
3757 if (htab
->sbss
== NULL
)
3759 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3761 if (!htab
->elf
.dynobj
)
3762 htab
->elf
.dynobj
= abfd
;
3764 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3767 if (htab
->sbss
== NULL
)
3772 *valp
= sym
->st_size
;
3775 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3776 && (abfd
->flags
& DYNAMIC
) == 0
3777 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
3778 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
3783 /* Find a linker generated pointer with a given addend and type. */
3785 static elf_linker_section_pointers_t
*
3786 elf_find_pointer_linker_section
3787 (elf_linker_section_pointers_t
*linker_pointers
,
3789 elf_linker_section_t
*lsect
)
3791 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3792 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3793 return linker_pointers
;
3798 /* Allocate a pointer to live in a linker created section. */
3801 elf_allocate_pointer_linker_section (bfd
*abfd
,
3802 elf_linker_section_t
*lsect
,
3803 struct elf_link_hash_entry
*h
,
3804 const Elf_Internal_Rela
*rel
)
3806 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3807 elf_linker_section_pointers_t
*linker_section_ptr
;
3808 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3811 BFD_ASSERT (lsect
!= NULL
);
3813 /* Is this a global symbol? */
3816 struct ppc_elf_link_hash_entry
*eh
;
3818 /* Has this symbol already been allocated? If so, our work is done. */
3819 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3820 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3825 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3829 BFD_ASSERT (is_ppc_elf (abfd
));
3831 /* Allocation of a pointer to a local symbol. */
3832 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3834 /* Allocate a table to hold the local symbols if first time. */
3837 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3840 amt
*= sizeof (elf_linker_section_pointers_t
*);
3841 ptr
= bfd_zalloc (abfd
, amt
);
3846 elf_local_ptr_offsets (abfd
) = ptr
;
3849 /* Has this symbol already been allocated? If so, our work is done. */
3850 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3855 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3858 /* Allocate space for a pointer in the linker section, and allocate
3859 a new pointer record from internal memory. */
3860 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3861 amt
= sizeof (elf_linker_section_pointers_t
);
3862 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3864 if (!linker_section_ptr
)
3867 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3868 linker_section_ptr
->addend
= rel
->r_addend
;
3869 linker_section_ptr
->lsect
= lsect
;
3870 *ptr_linker_section_ptr
= linker_section_ptr
;
3872 if (!bfd_set_section_alignment (lsect
->section
->owner
, lsect
->section
, 2))
3874 linker_section_ptr
->offset
= lsect
->section
->size
;
3875 lsect
->section
->size
+= 4;
3879 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3880 lsect
->name
, (long) linker_section_ptr
->offset
,
3881 (long) lsect
->section
->size
);
3887 static struct plt_entry
**
3888 update_local_sym_info (bfd
*abfd
,
3889 Elf_Internal_Shdr
*symtab_hdr
,
3890 unsigned long r_symndx
,
3893 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3894 struct plt_entry
**local_plt
;
3895 char *local_got_tls_masks
;
3897 if (local_got_refcounts
== NULL
)
3899 bfd_size_type size
= symtab_hdr
->sh_info
;
3901 size
*= (sizeof (*local_got_refcounts
)
3902 + sizeof (*local_plt
)
3903 + sizeof (*local_got_tls_masks
));
3904 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3905 if (local_got_refcounts
== NULL
)
3907 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3910 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3911 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3912 local_got_tls_masks
[r_symndx
] |= tls_type
;
3913 if (tls_type
!= PLT_IFUNC
)
3914 local_got_refcounts
[r_symndx
] += 1;
3915 return local_plt
+ r_symndx
;
3919 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3920 asection
*sec
, bfd_vma addend
)
3922 struct plt_entry
*ent
;
3926 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3927 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3931 bfd_size_type amt
= sizeof (*ent
);
3932 ent
= bfd_alloc (abfd
, amt
);
3937 ent
->addend
= addend
;
3938 ent
->plt
.refcount
= 0;
3941 ent
->plt
.refcount
+= 1;
3945 static struct plt_entry
*
3946 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3948 struct plt_entry
*ent
;
3952 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3953 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3959 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3961 return (r_type
== R_PPC_PLTREL24
3962 || r_type
== R_PPC_LOCAL24PC
3963 || r_type
== R_PPC_REL24
3964 || r_type
== R_PPC_REL14
3965 || r_type
== R_PPC_REL14_BRTAKEN
3966 || r_type
== R_PPC_REL14_BRNTAKEN
3967 || r_type
== R_PPC_ADDR24
3968 || r_type
== R_PPC_ADDR14
3969 || r_type
== R_PPC_ADDR14_BRTAKEN
3970 || r_type
== R_PPC_ADDR14_BRNTAKEN
3971 || r_type
== R_PPC_VLE_REL24
);
3975 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3978 /* xgettext:c-format */
3979 (_("%B: relocation %s cannot be used when making a shared object"),
3981 ppc_elf_howto_table
[r_type
]->name
);
3982 bfd_set_error (bfd_error_bad_value
);
3985 /* Look through the relocs for a section during the first phase, and
3986 allocate space in the global offset table or procedure linkage
3990 ppc_elf_check_relocs (bfd
*abfd
,
3991 struct bfd_link_info
*info
,
3993 const Elf_Internal_Rela
*relocs
)
3995 struct ppc_elf_link_hash_table
*htab
;
3996 Elf_Internal_Shdr
*symtab_hdr
;
3997 struct elf_link_hash_entry
**sym_hashes
;
3998 const Elf_Internal_Rela
*rel
;
3999 const Elf_Internal_Rela
*rel_end
;
4000 asection
*got2
, *sreloc
;
4001 struct elf_link_hash_entry
*tga
;
4003 if (bfd_link_relocatable (info
))
4006 /* Don't do anything special with non-loaded, non-alloced sections.
4007 In particular, any relocs in such sections should not affect GOT
4008 and PLT reference counting (ie. we don't allow them to create GOT
4009 or PLT entries), there's no possibility or desire to optimize TLS
4010 relocs, and there's not much point in propagating relocs to shared
4011 libs that the dynamic linker won't relocate. */
4012 if ((sec
->flags
& SEC_ALLOC
) == 0)
4016 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4020 BFD_ASSERT (is_ppc_elf (abfd
));
4022 /* Initialize howto table if not already done. */
4023 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
4024 ppc_elf_howto_init ();
4026 htab
= ppc_elf_hash_table (info
);
4027 if (htab
->glink
== NULL
)
4029 if (htab
->elf
.dynobj
== NULL
)
4030 htab
->elf
.dynobj
= abfd
;
4031 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
4034 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4035 FALSE
, FALSE
, TRUE
);
4036 symtab_hdr
= &elf_symtab_hdr (abfd
);
4037 sym_hashes
= elf_sym_hashes (abfd
);
4038 got2
= bfd_get_section_by_name (abfd
, ".got2");
4041 rel_end
= relocs
+ sec
->reloc_count
;
4042 for (rel
= relocs
; rel
< rel_end
; rel
++)
4044 unsigned long r_symndx
;
4045 enum elf_ppc_reloc_type r_type
;
4046 struct elf_link_hash_entry
*h
;
4048 struct plt_entry
**ifunc
;
4050 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4051 if (r_symndx
< symtab_hdr
->sh_info
)
4055 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4056 while (h
->root
.type
== bfd_link_hash_indirect
4057 || h
->root
.type
== bfd_link_hash_warning
)
4058 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4060 /* PR15323, ref flags aren't set for references in the same
4062 h
->root
.non_ir_ref
= 1;
4065 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4066 This shows up in particular in an R_PPC_ADDR32 in the eabi
4069 && htab
->got
== NULL
4070 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
4072 if (htab
->elf
.dynobj
== NULL
)
4073 htab
->elf
.dynobj
= abfd
;
4074 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4076 BFD_ASSERT (h
== htab
->elf
.hgot
);
4080 r_type
= ELF32_R_TYPE (rel
->r_info
);
4082 if (h
== NULL
&& !htab
->is_vxworks
)
4084 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4089 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4091 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4092 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4097 /* STT_GNU_IFUNC symbols must have a PLT entry;
4098 In a non-pie executable even when there are
4100 if (!bfd_link_pic (info
)
4101 || is_branch_reloc (r_type
))
4104 if (r_type
== R_PPC_PLTREL24
)
4106 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4107 if (bfd_link_pic (info
))
4108 addend
= rel
->r_addend
;
4110 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
4116 if (!htab
->is_vxworks
4117 && is_branch_reloc (r_type
)
4122 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
4123 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
4124 /* We have a new-style __tls_get_addr call with a marker
4128 /* Mark this section as having an old-style call. */
4129 sec
->has_tls_get_addr_call
= 1;
4136 /* These special tls relocs tie a call to __tls_get_addr with
4137 its parameter symbol. */
4140 case R_PPC_GOT_TLSLD16
:
4141 case R_PPC_GOT_TLSLD16_LO
:
4142 case R_PPC_GOT_TLSLD16_HI
:
4143 case R_PPC_GOT_TLSLD16_HA
:
4144 tls_type
= TLS_TLS
| TLS_LD
;
4147 case R_PPC_GOT_TLSGD16
:
4148 case R_PPC_GOT_TLSGD16_LO
:
4149 case R_PPC_GOT_TLSGD16_HI
:
4150 case R_PPC_GOT_TLSGD16_HA
:
4151 tls_type
= TLS_TLS
| TLS_GD
;
4154 case R_PPC_GOT_TPREL16
:
4155 case R_PPC_GOT_TPREL16_LO
:
4156 case R_PPC_GOT_TPREL16_HI
:
4157 case R_PPC_GOT_TPREL16_HA
:
4158 if (bfd_link_pic (info
))
4159 info
->flags
|= DF_STATIC_TLS
;
4160 tls_type
= TLS_TLS
| TLS_TPREL
;
4163 case R_PPC_GOT_DTPREL16
:
4164 case R_PPC_GOT_DTPREL16_LO
:
4165 case R_PPC_GOT_DTPREL16_HI
:
4166 case R_PPC_GOT_DTPREL16_HA
:
4167 tls_type
= TLS_TLS
| TLS_DTPREL
;
4169 sec
->has_tls_reloc
= 1;
4172 /* GOT16 relocations */
4174 case R_PPC_GOT16_LO
:
4175 case R_PPC_GOT16_HI
:
4176 case R_PPC_GOT16_HA
:
4177 /* This symbol requires a global offset table entry. */
4178 if (htab
->got
== NULL
)
4180 if (htab
->elf
.dynobj
== NULL
)
4181 htab
->elf
.dynobj
= abfd
;
4182 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4187 h
->got
.refcount
+= 1;
4188 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4191 /* This is a global offset table entry for a local symbol. */
4192 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4195 /* We may also need a plt entry if the symbol turns out to be
4197 if (h
!= NULL
&& !bfd_link_pic (info
))
4199 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4204 /* Indirect .sdata relocation. */
4205 case R_PPC_EMB_SDAI16
:
4206 if (bfd_link_pic (info
))
4208 bad_shared_reloc (abfd
, r_type
);
4211 htab
->sdata
[0].sym
->ref_regular
= 1;
4212 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[0],
4217 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4218 h
->non_got_ref
= TRUE
;
4222 /* Indirect .sdata2 relocation. */
4223 case R_PPC_EMB_SDA2I16
:
4224 if (bfd_link_pic (info
))
4226 bad_shared_reloc (abfd
, r_type
);
4229 htab
->sdata
[1].sym
->ref_regular
= 1;
4230 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[1],
4235 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4236 h
->non_got_ref
= TRUE
;
4240 case R_PPC_SDAREL16
:
4241 htab
->sdata
[0].sym
->ref_regular
= 1;
4244 case R_PPC_VLE_SDAREL_LO16A
:
4245 case R_PPC_VLE_SDAREL_LO16D
:
4246 case R_PPC_VLE_SDAREL_HI16A
:
4247 case R_PPC_VLE_SDAREL_HI16D
:
4248 case R_PPC_VLE_SDAREL_HA16A
:
4249 case R_PPC_VLE_SDAREL_HA16D
:
4252 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4253 h
->non_got_ref
= TRUE
;
4257 case R_PPC_VLE_REL8
:
4258 case R_PPC_VLE_REL15
:
4259 case R_PPC_VLE_REL24
:
4260 case R_PPC_VLE_LO16A
:
4261 case R_PPC_VLE_LO16D
:
4262 case R_PPC_VLE_HI16A
:
4263 case R_PPC_VLE_HI16D
:
4264 case R_PPC_VLE_HA16A
:
4265 case R_PPC_VLE_HA16D
:
4268 case R_PPC_EMB_SDA2REL
:
4269 if (bfd_link_pic (info
))
4271 bad_shared_reloc (abfd
, r_type
);
4274 htab
->sdata
[1].sym
->ref_regular
= 1;
4277 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4278 h
->non_got_ref
= TRUE
;
4282 case R_PPC_VLE_SDA21_LO
:
4283 case R_PPC_VLE_SDA21
:
4284 case R_PPC_EMB_SDA21
:
4285 case R_PPC_EMB_RELSDA
:
4286 if (bfd_link_pic (info
))
4288 bad_shared_reloc (abfd
, r_type
);
4293 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4294 h
->non_got_ref
= TRUE
;
4298 case R_PPC_EMB_NADDR32
:
4299 case R_PPC_EMB_NADDR16
:
4300 case R_PPC_EMB_NADDR16_LO
:
4301 case R_PPC_EMB_NADDR16_HI
:
4302 case R_PPC_EMB_NADDR16_HA
:
4303 if (bfd_link_pic (info
))
4305 bad_shared_reloc (abfd
, r_type
);
4309 h
->non_got_ref
= TRUE
;
4312 case R_PPC_PLTREL24
:
4317 case R_PPC_PLTREL32
:
4318 case R_PPC_PLT16_LO
:
4319 case R_PPC_PLT16_HI
:
4320 case R_PPC_PLT16_HA
:
4322 fprintf (stderr
, "Reloc requires a PLT entry\n");
4324 /* This symbol requires a procedure linkage table entry. */
4329 /* It does not make sense to have a procedure linkage
4330 table entry for a non-ifunc local symbol. */
4331 info
->callbacks
->einfo
4332 /* xgettext:c-format */
4333 (_("%P: %H: %s reloc against local symbol\n"),
4334 abfd
, sec
, rel
->r_offset
,
4335 ppc_elf_howto_table
[r_type
]->name
);
4336 bfd_set_error (bfd_error_bad_value
);
4344 if (r_type
== R_PPC_PLTREL24
)
4346 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4347 if (bfd_link_pic (info
))
4348 addend
= rel
->r_addend
;
4351 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4356 /* The following relocations don't need to propagate the
4357 relocation if linking a shared object since they are
4358 section relative. */
4360 case R_PPC_SECTOFF_LO
:
4361 case R_PPC_SECTOFF_HI
:
4362 case R_PPC_SECTOFF_HA
:
4363 case R_PPC_DTPREL16
:
4364 case R_PPC_DTPREL16_LO
:
4365 case R_PPC_DTPREL16_HI
:
4366 case R_PPC_DTPREL16_HA
:
4371 case R_PPC_REL16_LO
:
4372 case R_PPC_REL16_HI
:
4373 case R_PPC_REL16_HA
:
4374 case R_PPC_REL16DX_HA
:
4375 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4378 /* These are just markers. */
4380 case R_PPC_EMB_MRKREF
:
4384 case R_PPC_RELAX_PLT
:
4385 case R_PPC_RELAX_PLTREL24
:
4388 /* These should only appear in dynamic objects. */
4390 case R_PPC_GLOB_DAT
:
4391 case R_PPC_JMP_SLOT
:
4392 case R_PPC_RELATIVE
:
4393 case R_PPC_IRELATIVE
:
4396 /* These aren't handled yet. We'll report an error later. */
4398 case R_PPC_EMB_RELSEC16
:
4399 case R_PPC_EMB_RELST_LO
:
4400 case R_PPC_EMB_RELST_HI
:
4401 case R_PPC_EMB_RELST_HA
:
4402 case R_PPC_EMB_BIT_FLD
:
4405 /* This refers only to functions defined in the shared library. */
4406 case R_PPC_LOCAL24PC
:
4407 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4409 htab
->plt_type
= PLT_OLD
;
4410 htab
->old_bfd
= abfd
;
4412 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4415 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4420 /* This relocation describes the C++ object vtable hierarchy.
4421 Reconstruct it for later use during GC. */
4422 case R_PPC_GNU_VTINHERIT
:
4423 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4427 /* This relocation describes which C++ vtable entries are actually
4428 used. Record for later use during GC. */
4429 case R_PPC_GNU_VTENTRY
:
4430 BFD_ASSERT (h
!= NULL
);
4432 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4436 /* We shouldn't really be seeing these. */
4439 case R_PPC_TPREL16_LO
:
4440 case R_PPC_TPREL16_HI
:
4441 case R_PPC_TPREL16_HA
:
4442 if (bfd_link_pic (info
))
4443 info
->flags
|= DF_STATIC_TLS
;
4447 case R_PPC_DTPMOD32
:
4448 case R_PPC_DTPREL32
:
4454 && (sec
->flags
& SEC_CODE
) != 0
4455 && bfd_link_pic (info
)
4456 && htab
->plt_type
== PLT_UNSET
)
4458 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4459 the start of a function, which assembles to a REL32
4460 reference to .got2. If we detect one of these, then
4461 force the old PLT layout because the linker cannot
4462 reliably deduce the GOT pointer value needed for
4465 Elf_Internal_Sym
*isym
;
4467 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4472 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4475 htab
->plt_type
= PLT_OLD
;
4476 htab
->old_bfd
= abfd
;
4479 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4485 case R_PPC_ADDR16_LO
:
4486 case R_PPC_ADDR16_HI
:
4487 case R_PPC_ADDR16_HA
:
4490 if (h
!= NULL
&& !bfd_link_pic (info
))
4492 /* We may need a plt entry if the symbol turns out to be
4493 a function defined in a dynamic object. */
4494 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4497 /* We may need a copy reloc too. */
4499 h
->pointer_equality_needed
= 1;
4500 if (r_type
== R_PPC_ADDR16_HA
)
4501 ppc_elf_hash_entry (h
)->has_addr16_ha
= 1;
4502 if (r_type
== R_PPC_ADDR16_LO
)
4503 ppc_elf_hash_entry (h
)->has_addr16_lo
= 1;
4509 case R_PPC_REL14_BRTAKEN
:
4510 case R_PPC_REL14_BRNTAKEN
:
4513 if (h
== htab
->elf
.hgot
)
4515 if (htab
->plt_type
== PLT_UNSET
)
4517 htab
->plt_type
= PLT_OLD
;
4518 htab
->old_bfd
= abfd
;
4526 case R_PPC_ADDR14_BRTAKEN
:
4527 case R_PPC_ADDR14_BRNTAKEN
:
4528 if (h
!= NULL
&& !bfd_link_pic (info
))
4530 /* We may need a plt entry if the symbol turns out to be
4531 a function defined in a dynamic object. */
4533 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4539 /* If we are creating a shared library, and this is a reloc
4540 against a global symbol, or a non PC relative reloc
4541 against a local symbol, then we need to copy the reloc
4542 into the shared library. However, if we are linking with
4543 -Bsymbolic, we do not need to copy a reloc against a
4544 global symbol which is defined in an object we are
4545 including in the link (i.e., DEF_REGULAR is set). At
4546 this point we have not seen all the input files, so it is
4547 possible that DEF_REGULAR is not set now but will be set
4548 later (it is never cleared). In case of a weak definition,
4549 DEF_REGULAR may be cleared later by a strong definition in
4550 a shared library. We account for that possibility below by
4551 storing information in the dyn_relocs field of the hash
4552 table entry. A similar situation occurs when creating
4553 shared libraries and symbol visibility changes render the
4556 If on the other hand, we are creating an executable, we
4557 may need to keep relocations for symbols satisfied by a
4558 dynamic library if we manage to avoid copy relocs for the
4560 if ((bfd_link_pic (info
)
4561 && (must_be_dyn_reloc (info
, r_type
)
4563 && (!SYMBOLIC_BIND (info
, h
)
4564 || h
->root
.type
== bfd_link_hash_defweak
4565 || !h
->def_regular
))))
4566 || (ELIMINATE_COPY_RELOCS
4567 && !bfd_link_pic (info
)
4569 && (h
->root
.type
== bfd_link_hash_defweak
4570 || !h
->def_regular
)))
4574 "ppc_elf_check_relocs needs to "
4575 "create relocation for %s\n",
4576 (h
&& h
->root
.root
.string
4577 ? h
->root
.root
.string
: "<unknown>"));
4581 if (htab
->elf
.dynobj
== NULL
)
4582 htab
->elf
.dynobj
= abfd
;
4584 sreloc
= _bfd_elf_make_dynamic_reloc_section
4585 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4591 /* If this is a global symbol, we count the number of
4592 relocations we need for this symbol. */
4595 struct elf_dyn_relocs
*p
;
4596 struct elf_dyn_relocs
**rel_head
;
4598 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4600 if (p
== NULL
|| p
->sec
!= sec
)
4602 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4605 p
->next
= *rel_head
;
4612 if (!must_be_dyn_reloc (info
, r_type
))
4617 /* Track dynamic relocs needed for local syms too.
4618 We really need local syms available to do this
4620 struct ppc_dyn_relocs
*p
;
4621 struct ppc_dyn_relocs
**rel_head
;
4622 bfd_boolean is_ifunc
;
4625 Elf_Internal_Sym
*isym
;
4627 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4632 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4636 vpp
= &elf_section_data (s
)->local_dynrel
;
4637 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4638 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4640 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4642 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4644 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4647 p
->next
= *rel_head
;
4650 p
->ifunc
= is_ifunc
;
4664 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4665 and OBFD, and merge non-conflicting ones. */
4667 _bfd_elf_ppc_merge_fp_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4669 bfd
*obfd
= info
->output_bfd
;
4670 obj_attribute
*in_attr
, *in_attrs
;
4671 obj_attribute
*out_attr
, *out_attrs
;
4673 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4674 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4676 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4677 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4679 if (in_attr
->i
!= out_attr
->i
)
4681 int in_fp
= in_attr
->i
& 3;
4682 int out_fp
= out_attr
->i
& 3;
4686 else if (out_fp
== 0)
4689 out_attr
->i
^= in_fp
;
4691 else if (out_fp
!= 2 && in_fp
== 2)
4693 /* xgettext:c-format */
4694 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
4695 else if (out_fp
== 2 && in_fp
!= 2)
4697 /* xgettext:c-format */
4698 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
4699 else if (out_fp
== 1 && in_fp
== 3)
4701 /* xgettext:c-format */
4702 (_("Warning: %B uses double-precision hard float, "
4703 "%B uses single-precision hard float"), obfd
, ibfd
);
4704 else if (out_fp
== 3 && in_fp
== 1)
4706 /* xgettext:c-format */
4707 (_("Warning: %B uses double-precision hard float, "
4708 "%B uses single-precision hard float"), ibfd
, obfd
);
4710 in_fp
= in_attr
->i
& 0xc;
4711 out_fp
= out_attr
->i
& 0xc;
4714 else if (out_fp
== 0)
4717 out_attr
->i
^= in_fp
;
4719 else if (out_fp
!= 2 * 4 && in_fp
== 2 * 4)
4721 /* xgettext:c-format */
4722 (_("Warning: %B uses 64-bit long double, "
4723 "%B uses 128-bit long double"), ibfd
, obfd
);
4724 else if (in_fp
!= 2 * 4 && out_fp
== 2 * 4)
4726 /* xgettext:c-format */
4727 (_("Warning: %B uses 64-bit long double, "
4728 "%B uses 128-bit long double"), obfd
, ibfd
);
4729 else if (out_fp
== 1 * 4 && in_fp
== 3 * 4)
4731 /* xgettext:c-format */
4732 (_("Warning: %B uses IBM long double, "
4733 "%B uses IEEE long double"), ibfd
, obfd
);
4734 else if (out_fp
== 3 * 4 && in_fp
== 1 * 4)
4736 /* xgettext:c-format */
4737 (_("Warning: %B uses IBM long double, "
4738 "%B uses IEEE long double"), obfd
, ibfd
);
4742 /* Merge object attributes from IBFD into OBFD. Warn if
4743 there are conflicting attributes. */
4745 ppc_elf_merge_obj_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4748 obj_attribute
*in_attr
, *in_attrs
;
4749 obj_attribute
*out_attr
, *out_attrs
;
4751 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
4753 obfd
= info
->output_bfd
;
4754 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4755 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4757 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4758 merge non-conflicting ones. */
4759 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4760 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4761 if (in_attr
->i
!= out_attr
->i
)
4763 int in_vec
= in_attr
->i
& 3;
4764 int out_vec
= out_attr
->i
& 3;
4768 else if (out_vec
== 0)
4771 out_attr
->i
= in_vec
;
4773 /* For now, allow generic to transition to AltiVec or SPE
4774 without a warning. If GCC marked files with their stack
4775 alignment and used don't-care markings for files which are
4776 not affected by the vector ABI, we could warn about this
4778 else if (in_vec
== 1)
4780 else if (out_vec
== 1)
4783 out_attr
->i
= in_vec
;
4785 else if (out_vec
< in_vec
)
4787 /* xgettext:c-format */
4788 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4790 else if (out_vec
> in_vec
)
4792 /* xgettext:c-format */
4793 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4797 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4798 and merge non-conflicting ones. */
4799 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4800 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4801 if (in_attr
->i
!= out_attr
->i
)
4803 int in_struct
= in_attr
->i
& 3;
4804 int out_struct
= out_attr
->i
& 3;
4806 if (in_struct
== 0 || in_struct
== 3)
4808 else if (out_struct
== 0)
4811 out_attr
->i
= in_struct
;
4813 else if (out_struct
< in_struct
)
4815 /* xgettext:c-format */
4816 (_("Warning: %B uses r3/r4 for small structure returns, "
4817 "%B uses memory"), obfd
, ibfd
);
4818 else if (out_struct
> in_struct
)
4820 /* xgettext:c-format */
4821 (_("Warning: %B uses r3/r4 for small structure returns, "
4822 "%B uses memory"), ibfd
, obfd
);
4825 /* Merge Tag_compatibility attributes and any common GNU ones. */
4826 _bfd_elf_merge_object_attributes (ibfd
, info
);
4831 /* Merge backend specific data from an object file to the output
4832 object file when linking. */
4835 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4837 bfd
*obfd
= info
->output_bfd
;
4842 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4845 /* Check if we have the same endianness. */
4846 if (! _bfd_generic_verify_endian_match (ibfd
, info
))
4849 if (!ppc_elf_merge_obj_attributes (ibfd
, info
))
4852 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4853 old_flags
= elf_elfheader (obfd
)->e_flags
;
4854 if (!elf_flags_init (obfd
))
4856 /* First call, no flags set. */
4857 elf_flags_init (obfd
) = TRUE
;
4858 elf_elfheader (obfd
)->e_flags
= new_flags
;
4861 /* Compatible flags are ok. */
4862 else if (new_flags
== old_flags
)
4865 /* Incompatible flags. */
4868 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4869 to be linked with either. */
4871 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4872 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4876 (_("%B: compiled with -mrelocatable and linked with "
4877 "modules compiled normally"), ibfd
);
4879 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4880 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4884 (_("%B: compiled normally and linked with "
4885 "modules compiled with -mrelocatable"), ibfd
);
4888 /* The output is -mrelocatable-lib iff both the input files are. */
4889 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4890 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4892 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4893 but each input file is either -mrelocatable or -mrelocatable-lib. */
4894 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4895 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4896 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4897 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4899 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4900 any module uses it. */
4901 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4903 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4904 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4906 /* Warn about any other mismatches. */
4907 if (new_flags
!= old_flags
)
4911 /* xgettext:c-format */
4912 (_("%B: uses different e_flags (0x%lx) fields "
4913 "than previous modules (0x%lx)"),
4914 ibfd
, (long) new_flags
, (long) old_flags
);
4919 bfd_set_error (bfd_error_bad_value
);
4928 ppc_elf_vle_split16 (bfd
*input_bfd
,
4929 asection
*input_section
,
4930 unsigned long offset
,
4933 split16_format_type split16_format
,
4936 unsigned int insn
, opcode
, top5
;
4938 insn
= bfd_get_32 (input_bfd
, loc
);
4939 opcode
= insn
& 0xf300f800;
4940 if (opcode
== E_OR2I_INSN
4941 || opcode
== E_AND2I_DOT_INSN
4942 || opcode
== E_OR2IS_INSN
4943 || opcode
== E_LIS_INSN
4944 || opcode
== E_AND2IS_DOT_INSN
)
4946 if (split16_format
!= split16a_type
)
4949 split16_format
= split16a_type
;
4952 /* xgettext:c-format */
4953 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4954 input_bfd
, input_section
, offset
, opcode
);
4957 else if (opcode
== E_ADD2I_DOT_INSN
4958 || opcode
== E_ADD2IS_INSN
4959 || opcode
== E_CMP16I_INSN
4960 || opcode
== E_MULL2I_INSN
4961 || opcode
== E_CMPL16I_INSN
4962 || opcode
== E_CMPH16I_INSN
4963 || opcode
== E_CMPHL16I_INSN
)
4965 if (split16_format
!= split16d_type
)
4968 split16_format
= split16d_type
;
4971 /* xgettext:c-format */
4972 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4973 input_bfd
, input_section
, offset
, opcode
);
4976 top5
= value
& 0xf800;
4977 top5
= top5
<< (split16_format
== split16a_type
? 5 : 9);
4978 insn
&= (split16_format
== split16a_type
? ~0x1f07ff : ~0x1f007ff);
4980 insn
|= value
& 0x7ff;
4981 bfd_put_32 (input_bfd
, insn
, loc
);
4984 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4985 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4987 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4988 struct bfd_link_info
*info
)
4990 struct ppc_elf_link_hash_table
*htab
;
4993 htab
= ppc_elf_hash_table (info
);
4995 if (htab
->plt_type
== PLT_UNSET
)
4997 struct elf_link_hash_entry
*h
;
4999 if (htab
->params
->plt_style
== PLT_OLD
)
5000 htab
->plt_type
= PLT_OLD
;
5001 else if (bfd_link_pic (info
)
5002 && htab
->elf
.dynamic_sections_created
5003 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
5004 FALSE
, FALSE
, TRUE
)) != NULL
5005 && (h
->type
== STT_FUNC
5008 && !(SYMBOL_CALLS_LOCAL (info
, h
)
5009 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5010 && h
->root
.type
== bfd_link_hash_undefweak
)))
5012 /* Profiling of shared libs (and pies) is not supported with
5013 secure plt, because ppc32 does profiling before a
5014 function prologue and a secure plt pic call stubs needs
5015 r30 to be set up. */
5016 htab
->plt_type
= PLT_OLD
;
5021 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
5023 /* Look through the reloc flags left by ppc_elf_check_relocs.
5024 Use the old style bss plt if a file makes plt calls
5025 without using the new relocs, and if ld isn't given
5026 --secure-plt and we never see REL16 relocs. */
5027 if (plt_type
== PLT_UNSET
)
5029 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
5030 if (is_ppc_elf (ibfd
))
5032 if (ppc_elf_tdata (ibfd
)->has_rel16
)
5034 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
5037 htab
->old_bfd
= ibfd
;
5041 htab
->plt_type
= plt_type
;
5044 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
5046 if (htab
->old_bfd
!= NULL
)
5047 info
->callbacks
->einfo (_("%P: bss-plt forced due to %B\n"),
5050 info
->callbacks
->einfo (_("%P: bss-plt forced by profiling\n"));
5053 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
5055 if (htab
->plt_type
== PLT_NEW
)
5057 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
5058 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
5060 /* The new PLT is a loaded section. */
5061 if (htab
->plt
!= NULL
5062 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
5065 /* The new GOT is not executable. */
5066 if (htab
->got
!= NULL
5067 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
5072 /* Stop an unused .glink section from affecting .text alignment. */
5073 if (htab
->glink
!= NULL
5074 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
5077 return htab
->plt_type
== PLT_NEW
;
5080 /* Return the section that should be marked against GC for a given
5084 ppc_elf_gc_mark_hook (asection
*sec
,
5085 struct bfd_link_info
*info
,
5086 Elf_Internal_Rela
*rel
,
5087 struct elf_link_hash_entry
*h
,
5088 Elf_Internal_Sym
*sym
)
5091 switch (ELF32_R_TYPE (rel
->r_info
))
5093 case R_PPC_GNU_VTINHERIT
:
5094 case R_PPC_GNU_VTENTRY
:
5098 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5101 /* Update the got, plt and dynamic reloc reference counts for the
5102 section being removed. */
5105 ppc_elf_gc_sweep_hook (bfd
*abfd
,
5106 struct bfd_link_info
*info
,
5108 const Elf_Internal_Rela
*relocs
)
5110 struct ppc_elf_link_hash_table
*htab
;
5111 Elf_Internal_Shdr
*symtab_hdr
;
5112 struct elf_link_hash_entry
**sym_hashes
;
5113 bfd_signed_vma
*local_got_refcounts
;
5114 const Elf_Internal_Rela
*rel
, *relend
;
5117 if (bfd_link_relocatable (info
))
5120 if ((sec
->flags
& SEC_ALLOC
) == 0)
5123 elf_section_data (sec
)->local_dynrel
= NULL
;
5125 htab
= ppc_elf_hash_table (info
);
5126 symtab_hdr
= &elf_symtab_hdr (abfd
);
5127 sym_hashes
= elf_sym_hashes (abfd
);
5128 local_got_refcounts
= elf_local_got_refcounts (abfd
);
5129 got2
= bfd_get_section_by_name (abfd
, ".got2");
5131 relend
= relocs
+ sec
->reloc_count
;
5132 for (rel
= relocs
; rel
< relend
; rel
++)
5134 unsigned long r_symndx
;
5135 enum elf_ppc_reloc_type r_type
;
5136 struct elf_link_hash_entry
*h
= NULL
;
5138 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5139 if (r_symndx
>= symtab_hdr
->sh_info
)
5141 struct elf_dyn_relocs
**pp
, *p
;
5142 struct ppc_elf_link_hash_entry
*eh
;
5144 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5145 while (h
->root
.type
== bfd_link_hash_indirect
5146 || h
->root
.type
== bfd_link_hash_warning
)
5147 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5148 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5150 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5153 /* Everything must go for SEC. */
5159 r_type
= ELF32_R_TYPE (rel
->r_info
);
5160 if (!htab
->is_vxworks
5162 && local_got_refcounts
!= NULL
5163 && (!bfd_link_pic (info
)
5164 || is_branch_reloc (r_type
)))
5166 struct plt_entry
**local_plt
= (struct plt_entry
**)
5167 (local_got_refcounts
+ symtab_hdr
->sh_info
);
5168 char *local_got_tls_masks
= (char *)
5169 (local_plt
+ symtab_hdr
->sh_info
);
5170 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5172 struct plt_entry
**ifunc
= local_plt
+ r_symndx
;
5174 struct plt_entry
*ent
;
5176 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
5177 addend
= rel
->r_addend
;
5178 ent
= find_plt_ent (ifunc
, got2
, addend
);
5179 if (ent
->plt
.refcount
> 0)
5180 ent
->plt
.refcount
-= 1;
5187 case R_PPC_GOT_TLSLD16
:
5188 case R_PPC_GOT_TLSLD16_LO
:
5189 case R_PPC_GOT_TLSLD16_HI
:
5190 case R_PPC_GOT_TLSLD16_HA
:
5191 case R_PPC_GOT_TLSGD16
:
5192 case R_PPC_GOT_TLSGD16_LO
:
5193 case R_PPC_GOT_TLSGD16_HI
:
5194 case R_PPC_GOT_TLSGD16_HA
:
5195 case R_PPC_GOT_TPREL16
:
5196 case R_PPC_GOT_TPREL16_LO
:
5197 case R_PPC_GOT_TPREL16_HI
:
5198 case R_PPC_GOT_TPREL16_HA
:
5199 case R_PPC_GOT_DTPREL16
:
5200 case R_PPC_GOT_DTPREL16_LO
:
5201 case R_PPC_GOT_DTPREL16_HI
:
5202 case R_PPC_GOT_DTPREL16_HA
:
5204 case R_PPC_GOT16_LO
:
5205 case R_PPC_GOT16_HI
:
5206 case R_PPC_GOT16_HA
:
5209 if (h
->got
.refcount
> 0)
5211 if (!bfd_link_pic (info
))
5213 struct plt_entry
*ent
;
5215 ent
= find_plt_ent (&h
->plt
.plist
, NULL
, 0);
5216 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5217 ent
->plt
.refcount
-= 1;
5220 else if (local_got_refcounts
!= NULL
)
5222 if (local_got_refcounts
[r_symndx
] > 0)
5223 local_got_refcounts
[r_symndx
]--;
5229 case R_PPC_REL14_BRTAKEN
:
5230 case R_PPC_REL14_BRNTAKEN
:
5232 if (h
== NULL
|| h
== htab
->elf
.hgot
)
5239 case R_PPC_ADDR16_LO
:
5240 case R_PPC_ADDR16_HI
:
5241 case R_PPC_ADDR16_HA
:
5243 case R_PPC_ADDR14_BRTAKEN
:
5244 case R_PPC_ADDR14_BRNTAKEN
:
5247 if (bfd_link_pic (info
))
5252 case R_PPC_PLTREL24
:
5253 case R_PPC_PLTREL32
:
5254 case R_PPC_PLT16_LO
:
5255 case R_PPC_PLT16_HI
:
5256 case R_PPC_PLT16_HA
:
5260 struct plt_entry
*ent
;
5262 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
5263 addend
= rel
->r_addend
;
5264 ent
= find_plt_ent (&h
->plt
.plist
, got2
, addend
);
5265 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5266 ent
->plt
.refcount
-= 1;
5277 /* Set plt output section type, htab->tls_get_addr, and call the
5278 generic ELF tls_setup function. */
5281 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5283 struct ppc_elf_link_hash_table
*htab
;
5285 htab
= ppc_elf_hash_table (info
);
5286 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5287 FALSE
, FALSE
, TRUE
);
5288 if (htab
->plt_type
!= PLT_NEW
)
5289 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5291 if (!htab
->params
->no_tls_get_addr_opt
)
5293 struct elf_link_hash_entry
*opt
, *tga
;
5294 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5295 FALSE
, FALSE
, TRUE
);
5297 && (opt
->root
.type
== bfd_link_hash_defined
5298 || opt
->root
.type
== bfd_link_hash_defweak
))
5300 /* If glibc supports an optimized __tls_get_addr call stub,
5301 signalled by the presence of __tls_get_addr_opt, and we'll
5302 be calling __tls_get_addr via a plt call stub, then
5303 make __tls_get_addr point to __tls_get_addr_opt. */
5304 tga
= htab
->tls_get_addr
;
5305 if (htab
->elf
.dynamic_sections_created
5307 && (tga
->type
== STT_FUNC
5309 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5310 || (ELF_ST_VISIBILITY (tga
->other
) != STV_DEFAULT
5311 && tga
->root
.type
== bfd_link_hash_undefweak
)))
5313 struct plt_entry
*ent
;
5314 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5315 if (ent
->plt
.refcount
> 0)
5319 tga
->root
.type
= bfd_link_hash_indirect
;
5320 tga
->root
.u
.i
.link
= &opt
->root
;
5321 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5322 opt
->forced_local
= 0;
5323 if (opt
->dynindx
!= -1)
5325 /* Use __tls_get_addr_opt in dynamic relocations. */
5327 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5329 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5332 htab
->tls_get_addr
= opt
;
5337 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5339 if (htab
->plt_type
== PLT_NEW
5340 && htab
->plt
!= NULL
5341 && htab
->plt
->output_section
!= NULL
)
5343 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
5344 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5347 return _bfd_elf_tls_setup (obfd
, info
);
5350 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5354 branch_reloc_hash_match (const bfd
*ibfd
,
5355 const Elf_Internal_Rela
*rel
,
5356 const struct elf_link_hash_entry
*hash
)
5358 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5359 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5360 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5362 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5364 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5365 struct elf_link_hash_entry
*h
;
5367 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5368 while (h
->root
.type
== bfd_link_hash_indirect
5369 || h
->root
.type
== bfd_link_hash_warning
)
5370 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5377 /* Run through all the TLS relocs looking for optimization
5381 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5382 struct bfd_link_info
*info
)
5386 struct ppc_elf_link_hash_table
*htab
;
5389 if (!bfd_link_executable (info
))
5392 htab
= ppc_elf_hash_table (info
);
5396 /* Make two passes through the relocs. First time check that tls
5397 relocs involved in setting up a tls_get_addr call are indeed
5398 followed by such a call. If they are not, don't do any tls
5399 optimization. On the second pass twiddle tls_mask flags to
5400 notify relocate_section that optimization can be done, and
5401 adjust got and plt refcounts. */
5402 for (pass
= 0; pass
< 2; ++pass
)
5403 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
5405 Elf_Internal_Sym
*locsyms
= NULL
;
5406 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5407 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5409 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5410 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5412 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5413 int expecting_tls_get_addr
= 0;
5415 /* Read the relocations. */
5416 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5418 if (relstart
== NULL
)
5421 relend
= relstart
+ sec
->reloc_count
;
5422 for (rel
= relstart
; rel
< relend
; rel
++)
5424 enum elf_ppc_reloc_type r_type
;
5425 unsigned long r_symndx
;
5426 struct elf_link_hash_entry
*h
= NULL
;
5428 char tls_set
, tls_clear
;
5429 bfd_boolean is_local
;
5430 bfd_signed_vma
*got_count
;
5432 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5433 if (r_symndx
>= symtab_hdr
->sh_info
)
5435 struct elf_link_hash_entry
**sym_hashes
;
5437 sym_hashes
= elf_sym_hashes (ibfd
);
5438 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5439 while (h
->root
.type
== bfd_link_hash_indirect
5440 || h
->root
.type
== bfd_link_hash_warning
)
5441 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5449 r_type
= ELF32_R_TYPE (rel
->r_info
);
5450 /* If this section has old-style __tls_get_addr calls
5451 without marker relocs, then check that each
5452 __tls_get_addr call reloc is preceded by a reloc
5453 that conceivably belongs to the __tls_get_addr arg
5454 setup insn. If we don't find matching arg setup
5455 relocs, don't do any tls optimization. */
5457 && sec
->has_tls_get_addr_call
5459 && h
== htab
->tls_get_addr
5460 && !expecting_tls_get_addr
5461 && is_branch_reloc (r_type
))
5463 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5464 "TLS optimization disabled\n",
5465 ibfd
, sec
, rel
->r_offset
);
5466 if (elf_section_data (sec
)->relocs
!= relstart
)
5471 expecting_tls_get_addr
= 0;
5474 case R_PPC_GOT_TLSLD16
:
5475 case R_PPC_GOT_TLSLD16_LO
:
5476 expecting_tls_get_addr
= 1;
5479 case R_PPC_GOT_TLSLD16_HI
:
5480 case R_PPC_GOT_TLSLD16_HA
:
5481 /* These relocs should never be against a symbol
5482 defined in a shared lib. Leave them alone if
5483 that turns out to be the case. */
5492 case R_PPC_GOT_TLSGD16
:
5493 case R_PPC_GOT_TLSGD16_LO
:
5494 expecting_tls_get_addr
= 1;
5497 case R_PPC_GOT_TLSGD16_HI
:
5498 case R_PPC_GOT_TLSGD16_HA
:
5504 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5508 case R_PPC_GOT_TPREL16
:
5509 case R_PPC_GOT_TPREL16_LO
:
5510 case R_PPC_GOT_TPREL16_HI
:
5511 case R_PPC_GOT_TPREL16_HA
:
5516 tls_clear
= TLS_TPREL
;
5524 expecting_tls_get_addr
= 2;
5535 if (!expecting_tls_get_addr
5536 || (expecting_tls_get_addr
== 1
5537 && !sec
->has_tls_get_addr_call
))
5540 if (rel
+ 1 < relend
5541 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5542 htab
->tls_get_addr
))
5545 /* Uh oh, we didn't find the expected call. We
5546 could just mark this symbol to exclude it
5547 from tls optimization but it's safer to skip
5548 the entire optimization. */
5549 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5550 "TLS optimization disabled\n"),
5551 ibfd
, sec
, rel
->r_offset
);
5552 if (elf_section_data (sec
)->relocs
!= relstart
)
5557 if (expecting_tls_get_addr
)
5559 struct plt_entry
*ent
;
5562 if (bfd_link_pic (info
)
5563 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5564 addend
= rel
[1].r_addend
;
5565 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5567 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5568 ent
->plt
.refcount
-= 1;
5570 if (expecting_tls_get_addr
== 2)
5576 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5577 got_count
= &h
->got
.refcount
;
5581 bfd_signed_vma
*lgot_refs
;
5582 struct plt_entry
**local_plt
;
5585 if (locsyms
== NULL
)
5587 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5588 if (locsyms
== NULL
)
5589 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5590 symtab_hdr
->sh_info
,
5591 0, NULL
, NULL
, NULL
);
5592 if (locsyms
== NULL
)
5594 if (elf_section_data (sec
)->relocs
!= relstart
)
5599 lgot_refs
= elf_local_got_refcounts (ibfd
);
5600 if (lgot_refs
== NULL
)
5602 local_plt
= (struct plt_entry
**)
5603 (lgot_refs
+ symtab_hdr
->sh_info
);
5604 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
5605 tls_mask
= &lgot_masks
[r_symndx
];
5606 got_count
= &lgot_refs
[r_symndx
];
5611 /* We managed to get rid of a got entry. */
5616 *tls_mask
|= tls_set
;
5617 *tls_mask
&= ~tls_clear
;
5620 if (elf_section_data (sec
)->relocs
!= relstart
)
5625 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
5627 if (!info
->keep_memory
)
5630 symtab_hdr
->contents
= (unsigned char *) locsyms
;
5636 /* Return true if we have dynamic relocs that apply to read-only sections. */
5639 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5641 struct elf_dyn_relocs
*p
;
5643 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5645 asection
*s
= p
->sec
->output_section
;
5648 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
5649 == (SEC_READONLY
| SEC_ALLOC
)))
5655 /* Adjust a symbol defined by a dynamic object and referenced by a
5656 regular object. The current definition is in some section of the
5657 dynamic object, but we're not including those sections. We have to
5658 change the definition to something the rest of the link can
5662 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5663 struct elf_link_hash_entry
*h
)
5665 struct ppc_elf_link_hash_table
*htab
;
5669 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5670 h
->root
.root
.string
);
5673 /* Make sure we know what is going on here. */
5674 htab
= ppc_elf_hash_table (info
);
5675 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5677 || h
->type
== STT_GNU_IFUNC
5678 || h
->u
.weakdef
!= NULL
5681 && !h
->def_regular
)));
5683 /* Deal with function syms. */
5684 if (h
->type
== STT_FUNC
5685 || h
->type
== STT_GNU_IFUNC
5688 /* Clear procedure linkage table information for any symbol that
5689 won't need a .plt entry. */
5690 struct plt_entry
*ent
;
5691 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5692 if (ent
->plt
.refcount
> 0)
5695 || (h
->type
!= STT_GNU_IFUNC
5696 && (SYMBOL_CALLS_LOCAL (info
, h
)
5697 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5698 && h
->root
.type
== bfd_link_hash_undefweak
))))
5700 /* A PLT entry is not required/allowed when:
5702 1. We are not using ld.so; because then the PLT entry
5703 can't be set up, so we can't use one. In this case,
5704 ppc_elf_adjust_dynamic_symbol won't even be called.
5706 2. GC has rendered the entry unused.
5708 3. We know for certain that a call to this symbol
5709 will go to this object, or will remain undefined. */
5710 h
->plt
.plist
= NULL
;
5712 h
->pointer_equality_needed
= 0;
5716 /* Taking a function's address in a read/write section
5717 doesn't require us to define the function symbol in the
5718 executable on a plt call stub. A dynamic reloc can
5720 if (h
->pointer_equality_needed
5721 && h
->type
!= STT_GNU_IFUNC
5722 && !htab
->is_vxworks
5723 && !ppc_elf_hash_entry (h
)->has_sda_refs
5724 && !readonly_dynrelocs (h
))
5726 h
->pointer_equality_needed
= 0;
5730 /* After adjust_dynamic_symbol, non_got_ref set in the
5731 non-shared case means that we have allocated space in
5732 .dynbss for the symbol and thus dyn_relocs for this
5733 symbol should be discarded.
5734 If we get here we know we are making a PLT entry for this
5735 symbol, and in an executable we'd normally resolve
5736 relocations against this symbol to the PLT entry. Allow
5737 dynamic relocs if the reference is weak, and the dynamic
5738 relocs will not cause text relocation. */
5739 else if (!h
->ref_regular_nonweak
5741 && h
->type
!= STT_GNU_IFUNC
5742 && !htab
->is_vxworks
5743 && !ppc_elf_hash_entry (h
)->has_sda_refs
5744 && !readonly_dynrelocs (h
))
5747 h
->protected_def
= 0;
5751 h
->plt
.plist
= NULL
;
5753 /* If this is a weak symbol, and there is a real definition, the
5754 processor independent code will have arranged for us to see the
5755 real definition first, and we can just use the same value. */
5756 if (h
->u
.weakdef
!= NULL
)
5758 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5759 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5760 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5761 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5762 if (ELIMINATE_COPY_RELOCS
)
5763 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5767 /* This is a reference to a symbol defined by a dynamic object which
5768 is not a function. */
5770 /* If we are creating a shared library, we must presume that the
5771 only references to the symbol are via the global offset table.
5772 For such cases we need not do anything here; the relocations will
5773 be handled correctly by relocate_section. */
5774 if (bfd_link_pic (info
))
5776 h
->protected_def
= 0;
5780 /* If there are no references to this symbol that do not use the
5781 GOT, we don't need to generate a copy reloc. */
5782 if (!h
->non_got_ref
)
5784 h
->protected_def
= 0;
5788 /* Protected variables do not work with .dynbss. The copy in
5789 .dynbss won't be used by the shared library with the protected
5790 definition for the variable. Editing to PIC, or text relocations
5791 are preferable to an incorrect program. */
5792 if (h
->protected_def
)
5794 if (ELIMINATE_COPY_RELOCS
5795 && ppc_elf_hash_entry (h
)->has_addr16_ha
5796 && ppc_elf_hash_entry (h
)->has_addr16_lo
5797 && htab
->params
->pic_fixup
== 0
5798 && info
->disable_target_specific_optimizations
<= 1)
5799 htab
->params
->pic_fixup
= 1;
5804 /* If -z nocopyreloc was given, we won't generate them either. */
5805 if (info
->nocopyreloc
)
5811 /* If we didn't find any dynamic relocs in read-only sections, then
5812 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5813 We can't do this if there are any small data relocations. This
5814 doesn't work on VxWorks, where we can not have dynamic
5815 relocations (other than copy and jump slot relocations) in an
5817 if (ELIMINATE_COPY_RELOCS
5818 && !ppc_elf_hash_entry (h
)->has_sda_refs
5819 && !htab
->is_vxworks
5821 && !readonly_dynrelocs (h
))
5827 /* We must allocate the symbol in our .dynbss section, which will
5828 become part of the .bss section of the executable. There will be
5829 an entry for this symbol in the .dynsym section. The dynamic
5830 object will contain position independent code, so all references
5831 from the dynamic object to this symbol will go through the global
5832 offset table. The dynamic linker will use the .dynsym entry to
5833 determine the address it must put in the global offset table, so
5834 both the dynamic object and the regular object will refer to the
5835 same memory location for the variable.
5837 Of course, if the symbol is referenced using SDAREL relocs, we
5838 must instead allocate it in .sbss. */
5840 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5844 BFD_ASSERT (s
!= NULL
);
5846 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5847 copy the initial value out of the dynamic object and into the
5848 runtime process image. We need to remember the offset into the
5849 .rela.bss section we are going to use. */
5850 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5854 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5855 srel
= htab
->relsbss
;
5857 srel
= htab
->relbss
;
5858 BFD_ASSERT (srel
!= NULL
);
5859 srel
->size
+= sizeof (Elf32_External_Rela
);
5863 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
5866 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5867 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5868 specifying the addend on the plt relocation. For -fpic code, the sym
5869 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5870 xxxxxxxx.got2.plt_pic32.<callee>. */
5873 add_stub_sym (struct plt_entry
*ent
,
5874 struct elf_link_hash_entry
*h
,
5875 struct bfd_link_info
*info
)
5877 struct elf_link_hash_entry
*sh
;
5878 size_t len1
, len2
, len3
;
5881 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5883 if (bfd_link_pic (info
))
5884 stub
= ".plt_pic32.";
5886 stub
= ".plt_call32.";
5888 len1
= strlen (h
->root
.root
.string
);
5889 len2
= strlen (stub
);
5892 len3
= strlen (ent
->sec
->name
);
5893 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5896 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5898 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5899 memcpy (name
+ 8 + len3
, stub
, len2
);
5900 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5901 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5904 if (sh
->root
.type
== bfd_link_hash_new
)
5906 sh
->root
.type
= bfd_link_hash_defined
;
5907 sh
->root
.u
.def
.section
= htab
->glink
;
5908 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5909 sh
->ref_regular
= 1;
5910 sh
->def_regular
= 1;
5911 sh
->ref_regular_nonweak
= 1;
5912 sh
->forced_local
= 1;
5914 sh
->root
.linker_def
= 1;
5919 /* Allocate NEED contiguous space in .got, and return the offset.
5920 Handles allocation of the got header when crossing 32k. */
5923 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5926 unsigned int max_before_header
;
5928 if (htab
->plt_type
== PLT_VXWORKS
)
5930 where
= htab
->got
->size
;
5931 htab
->got
->size
+= need
;
5935 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5936 if (need
<= htab
->got_gap
)
5938 where
= max_before_header
- htab
->got_gap
;
5939 htab
->got_gap
-= need
;
5943 if (htab
->got
->size
+ need
> max_before_header
5944 && htab
->got
->size
<= max_before_header
)
5946 htab
->got_gap
= max_before_header
- htab
->got
->size
;
5947 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
5949 where
= htab
->got
->size
;
5950 htab
->got
->size
+= need
;
5956 /* Allocate space in associated reloc sections for dynamic relocs. */
5959 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5961 struct bfd_link_info
*info
= inf
;
5962 struct ppc_elf_link_hash_entry
*eh
;
5963 struct ppc_elf_link_hash_table
*htab
;
5964 struct elf_dyn_relocs
*p
;
5966 if (h
->root
.type
== bfd_link_hash_indirect
)
5969 htab
= ppc_elf_hash_table (info
);
5970 if (htab
->elf
.dynamic_sections_created
5971 || h
->type
== STT_GNU_IFUNC
)
5973 struct plt_entry
*ent
;
5974 bfd_boolean doneone
= FALSE
;
5975 bfd_vma plt_offset
= 0, glink_offset
= 0;
5978 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5979 if (ent
->plt
.refcount
> 0)
5981 /* Make sure this symbol is output as a dynamic symbol. */
5982 if (h
->dynindx
== -1
5985 && htab
->elf
.dynamic_sections_created
)
5987 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5991 dyn
= htab
->elf
.dynamic_sections_created
;
5992 if (bfd_link_pic (info
)
5993 || h
->type
== STT_GNU_IFUNC
5994 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
5996 asection
*s
= htab
->plt
;
5997 if (!dyn
|| h
->dynindx
== -1)
6000 if (htab
->plt_type
== PLT_NEW
|| !dyn
|| h
->dynindx
== -1)
6004 plt_offset
= s
->size
;
6007 ent
->plt
.offset
= plt_offset
;
6010 if (!doneone
|| bfd_link_pic (info
))
6012 glink_offset
= s
->size
;
6013 s
->size
+= GLINK_ENTRY_SIZE
;
6014 if (h
== htab
->tls_get_addr
6015 && !htab
->params
->no_tls_get_addr_opt
)
6016 s
->size
+= TLS_GET_ADDR_GLINK_SIZE
- GLINK_ENTRY_SIZE
;
6019 && !bfd_link_pic (info
)
6023 h
->root
.u
.def
.section
= s
;
6024 h
->root
.u
.def
.value
= glink_offset
;
6026 ent
->glink_offset
= glink_offset
;
6028 if (htab
->params
->emit_stub_syms
6029 && !add_stub_sym (ent
, h
, info
))
6036 /* If this is the first .plt entry, make room
6037 for the special first entry. */
6039 s
->size
+= htab
->plt_initial_entry_size
;
6041 /* The PowerPC PLT is actually composed of two
6042 parts, the first part is 2 words (for a load
6043 and a jump), and then there is a remaining
6044 word available at the end. */
6045 plt_offset
= (htab
->plt_initial_entry_size
6046 + (htab
->plt_slot_size
6048 - htab
->plt_initial_entry_size
)
6049 / htab
->plt_entry_size
)));
6051 /* If this symbol is not defined in a regular
6052 file, and we are not generating a shared
6053 library, then set the symbol to this location
6054 in the .plt. This is to avoid text
6055 relocations, and is required to make
6056 function pointers compare as equal between
6057 the normal executable and the shared library. */
6058 if (! bfd_link_pic (info
)
6062 h
->root
.u
.def
.section
= s
;
6063 h
->root
.u
.def
.value
= plt_offset
;
6066 /* Make room for this entry. */
6067 s
->size
+= htab
->plt_entry_size
;
6068 /* After the 8192nd entry, room for two entries
6070 if (htab
->plt_type
== PLT_OLD
6071 && (s
->size
- htab
->plt_initial_entry_size
)
6072 / htab
->plt_entry_size
6073 > PLT_NUM_SINGLE_ENTRIES
)
6074 s
->size
+= htab
->plt_entry_size
;
6076 ent
->plt
.offset
= plt_offset
;
6079 /* We also need to make an entry in the .rela.plt section. */
6082 if (!htab
->elf
.dynamic_sections_created
6083 || h
->dynindx
== -1)
6084 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
6087 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
6089 if (htab
->plt_type
== PLT_VXWORKS
)
6091 /* Allocate space for the unloaded relocations. */
6092 if (!bfd_link_pic (info
)
6093 && htab
->elf
.dynamic_sections_created
)
6096 == (bfd_vma
) htab
->plt_initial_entry_size
)
6098 htab
->srelplt2
->size
6099 += (sizeof (Elf32_External_Rela
)
6100 * VXWORKS_PLTRESOLVE_RELOCS
);
6103 htab
->srelplt2
->size
6104 += (sizeof (Elf32_External_Rela
)
6105 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
6108 /* Every PLT entry has an associated GOT entry in
6110 htab
->sgotplt
->size
+= 4;
6117 ent
->plt
.offset
= (bfd_vma
) -1;
6120 ent
->plt
.offset
= (bfd_vma
) -1;
6124 h
->plt
.plist
= NULL
;
6130 h
->plt
.plist
= NULL
;
6134 eh
= (struct ppc_elf_link_hash_entry
*) h
;
6135 if (eh
->elf
.got
.refcount
> 0
6136 || (ELIMINATE_COPY_RELOCS
6137 && !eh
->elf
.def_regular
6138 && eh
->elf
.protected_def
6139 && eh
->has_addr16_ha
6140 && eh
->has_addr16_lo
6141 && htab
->params
->pic_fixup
> 0))
6146 /* Make sure this symbol is output as a dynamic symbol. */
6147 if (eh
->elf
.dynindx
== -1
6148 && !eh
->elf
.forced_local
6149 && eh
->elf
.type
!= STT_GNU_IFUNC
6150 && htab
->elf
.dynamic_sections_created
)
6152 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
6157 if ((eh
->tls_mask
& TLS_TLS
) != 0)
6159 if ((eh
->tls_mask
& TLS_LD
) != 0)
6161 if (!eh
->elf
.def_dynamic
)
6162 /* We'll just use htab->tlsld_got.offset. This should
6163 always be the case. It's a little odd if we have
6164 a local dynamic reloc against a non-local symbol. */
6165 htab
->tlsld_got
.refcount
+= 1;
6169 if ((eh
->tls_mask
& TLS_GD
) != 0)
6171 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6173 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
6179 eh
->elf
.got
.offset
= (bfd_vma
) -1;
6182 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
6183 dyn
= htab
->elf
.dynamic_sections_created
;
6184 if ((bfd_link_pic (info
)
6185 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
6186 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
6187 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
6189 asection
*rsec
= htab
->relgot
;
6191 if (eh
->elf
.type
== STT_GNU_IFUNC
)
6192 rsec
= htab
->reliplt
;
6193 /* All the entries we allocated need relocs.
6194 Except LD only needs one. */
6195 if ((eh
->tls_mask
& TLS_LD
) != 0
6196 && eh
->elf
.def_dynamic
)
6198 rsec
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
6203 eh
->elf
.got
.offset
= (bfd_vma
) -1;
6205 if (eh
->dyn_relocs
== NULL
6206 || !htab
->elf
.dynamic_sections_created
)
6209 /* In the shared -Bsymbolic case, discard space allocated for
6210 dynamic pc-relative relocs against symbols which turn out to be
6211 defined in regular objects. For the normal shared case, discard
6212 space for relocs that have become local due to symbol visibility
6215 if (bfd_link_pic (info
))
6217 /* Relocs that use pc_count are those that appear on a call insn,
6218 or certain REL relocs (see must_be_dyn_reloc) that can be
6219 generated via assembly. We want calls to protected symbols to
6220 resolve directly to the function rather than going via the plt.
6221 If people want function pointer comparisons to work as expected
6222 then they should avoid writing weird assembly. */
6223 if (SYMBOL_CALLS_LOCAL (info
, h
))
6225 struct elf_dyn_relocs
**pp
;
6227 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6229 p
->count
-= p
->pc_count
;
6238 if (htab
->is_vxworks
)
6240 struct elf_dyn_relocs
**pp
;
6242 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6244 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
6251 /* Discard relocs on undefined symbols that must be local. */
6252 if (eh
->dyn_relocs
!= NULL
6253 && h
->root
.type
== bfd_link_hash_undefined
6254 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
6255 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
6256 eh
->dyn_relocs
= NULL
;
6258 /* Also discard relocs on undefined weak syms with non-default
6260 if (eh
->dyn_relocs
!= NULL
6261 && h
->root
.type
== bfd_link_hash_undefweak
)
6263 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
6264 eh
->dyn_relocs
= NULL
;
6266 /* Make sure undefined weak symbols are output as a dynamic
6268 else if (h
->dynindx
== -1
6272 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6277 else if (ELIMINATE_COPY_RELOCS
)
6279 /* For the non-shared case, discard space for relocs against
6280 symbols which turn out to need copy relocs or are not
6285 && !(h
->protected_def
6286 && eh
->has_addr16_ha
6287 && eh
->has_addr16_lo
6288 && htab
->params
->pic_fixup
> 0))
6290 /* Make sure this symbol is output as a dynamic symbol.
6291 Undefined weak syms won't yet be marked as dynamic. */
6292 if (h
->dynindx
== -1
6293 && !h
->forced_local
)
6295 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6299 /* If that succeeded, we know we'll be keeping all the
6301 if (h
->dynindx
!= -1)
6305 eh
->dyn_relocs
= NULL
;
6310 /* Finally, allocate space. */
6311 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6313 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6314 if (eh
->elf
.type
== STT_GNU_IFUNC
)
6315 sreloc
= htab
->reliplt
;
6316 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6322 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6323 read-only sections. */
6326 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
6328 if (h
->root
.type
== bfd_link_hash_indirect
)
6331 if (readonly_dynrelocs (h
))
6333 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
6335 /* Not an error, just cut short the traversal. */
6341 static const unsigned char glink_eh_frame_cie
[] =
6343 0, 0, 0, 16, /* length. */
6344 0, 0, 0, 0, /* id. */
6345 1, /* CIE version. */
6346 'z', 'R', 0, /* Augmentation string. */
6347 4, /* Code alignment. */
6348 0x7c, /* Data alignment. */
6350 1, /* Augmentation size. */
6351 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6352 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6355 /* Set the sizes of the dynamic sections. */
6358 ppc_elf_size_dynamic_sections (bfd
*output_bfd
,
6359 struct bfd_link_info
*info
)
6361 struct ppc_elf_link_hash_table
*htab
;
6367 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6370 htab
= ppc_elf_hash_table (info
);
6371 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6373 if (elf_hash_table (info
)->dynamic_sections_created
)
6375 /* Set the contents of the .interp section to the interpreter. */
6376 if (bfd_link_executable (info
) && !info
->nointerp
)
6378 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6379 BFD_ASSERT (s
!= NULL
);
6380 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6381 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6385 if (htab
->plt_type
== PLT_OLD
)
6386 htab
->got_header_size
= 16;
6387 else if (htab
->plt_type
== PLT_NEW
)
6388 htab
->got_header_size
= 12;
6390 /* Set up .got offsets for local syms, and space for local dynamic
6392 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
6394 bfd_signed_vma
*local_got
;
6395 bfd_signed_vma
*end_local_got
;
6396 struct plt_entry
**local_plt
;
6397 struct plt_entry
**end_local_plt
;
6399 bfd_size_type locsymcount
;
6400 Elf_Internal_Shdr
*symtab_hdr
;
6402 if (!is_ppc_elf (ibfd
))
6405 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6407 struct ppc_dyn_relocs
*p
;
6409 for (p
= ((struct ppc_dyn_relocs
*)
6410 elf_section_data (s
)->local_dynrel
);
6414 if (!bfd_is_abs_section (p
->sec
)
6415 && bfd_is_abs_section (p
->sec
->output_section
))
6417 /* Input section has been discarded, either because
6418 it is a copy of a linkonce section or due to
6419 linker script /DISCARD/, so we'll be discarding
6422 else if (htab
->is_vxworks
6423 && strcmp (p
->sec
->output_section
->name
,
6426 /* Relocations in vxworks .tls_vars sections are
6427 handled specially by the loader. */
6429 else if (p
->count
!= 0)
6431 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6433 sreloc
= htab
->reliplt
;
6434 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6435 if ((p
->sec
->output_section
->flags
6436 & (SEC_READONLY
| SEC_ALLOC
))
6437 == (SEC_READONLY
| SEC_ALLOC
))
6438 info
->flags
|= DF_TEXTREL
;
6443 local_got
= elf_local_got_refcounts (ibfd
);
6447 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6448 locsymcount
= symtab_hdr
->sh_info
;
6449 end_local_got
= local_got
+ locsymcount
;
6450 local_plt
= (struct plt_entry
**) end_local_got
;
6451 end_local_plt
= local_plt
+ locsymcount
;
6452 lgot_masks
= (char *) end_local_plt
;
6454 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6457 unsigned int need
= 0;
6458 if ((*lgot_masks
& TLS_TLS
) != 0)
6460 if ((*lgot_masks
& TLS_GD
) != 0)
6462 if ((*lgot_masks
& TLS_LD
) != 0)
6463 htab
->tlsld_got
.refcount
+= 1;
6464 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6466 if ((*lgot_masks
& TLS_DTPREL
) != 0)
6472 *local_got
= (bfd_vma
) -1;
6475 *local_got
= allocate_got (htab
, need
);
6476 if (bfd_link_pic (info
))
6478 asection
*srel
= htab
->relgot
;
6479 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6480 srel
= htab
->reliplt
;
6481 srel
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
6486 *local_got
= (bfd_vma
) -1;
6488 if (htab
->is_vxworks
)
6491 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6492 for (; local_plt
< end_local_plt
; ++local_plt
)
6494 struct plt_entry
*ent
;
6495 bfd_boolean doneone
= FALSE
;
6496 bfd_vma plt_offset
= 0, glink_offset
= 0;
6498 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6499 if (ent
->plt
.refcount
> 0)
6505 plt_offset
= s
->size
;
6508 ent
->plt
.offset
= plt_offset
;
6511 if (!doneone
|| bfd_link_pic (info
))
6513 glink_offset
= s
->size
;
6514 s
->size
+= GLINK_ENTRY_SIZE
;
6516 ent
->glink_offset
= glink_offset
;
6520 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
6525 ent
->plt
.offset
= (bfd_vma
) -1;
6529 /* Allocate space for global sym dynamic relocs. */
6530 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6532 if (htab
->tlsld_got
.refcount
> 0)
6534 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6535 if (bfd_link_pic (info
))
6536 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
6539 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6541 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6543 unsigned int g_o_t
= 32768;
6545 /* If we haven't allocated the header, do so now. When we get here,
6546 for old plt/got the got size will be 0 to 32764 (not allocated),
6547 or 32780 to 65536 (header allocated). For new plt/got, the
6548 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6549 if (htab
->got
->size
<= 32768)
6551 g_o_t
= htab
->got
->size
;
6552 if (htab
->plt_type
== PLT_OLD
)
6554 htab
->got
->size
+= htab
->got_header_size
;
6557 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6559 if (bfd_link_pic (info
))
6561 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6563 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6564 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6566 if (info
->emitrelocations
)
6568 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6570 if (sda
!= NULL
&& sda
->ref_regular
)
6571 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6572 sda
= htab
->sdata
[1].sym
;
6573 if (sda
!= NULL
&& sda
->ref_regular
)
6574 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6577 if (htab
->glink
!= NULL
6578 && htab
->glink
->size
!= 0
6579 && htab
->elf
.dynamic_sections_created
)
6581 htab
->glink_pltresolve
= htab
->glink
->size
;
6582 /* Space for the branch table. ??? We don't need entries for
6583 non-dynamic symbols in this table. This case can arise with
6584 static ifuncs or forced local ifuncs. */
6585 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
6586 /* Pad out to align the start of PLTresolve. */
6587 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6589 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6591 if (htab
->params
->emit_stub_syms
)
6593 struct elf_link_hash_entry
*sh
;
6594 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6595 TRUE
, FALSE
, FALSE
);
6598 if (sh
->root
.type
== bfd_link_hash_new
)
6600 sh
->root
.type
= bfd_link_hash_defined
;
6601 sh
->root
.u
.def
.section
= htab
->glink
;
6602 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6603 sh
->ref_regular
= 1;
6604 sh
->def_regular
= 1;
6605 sh
->ref_regular_nonweak
= 1;
6606 sh
->forced_local
= 1;
6608 sh
->root
.linker_def
= 1;
6610 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6611 TRUE
, FALSE
, FALSE
);
6614 if (sh
->root
.type
== bfd_link_hash_new
)
6616 sh
->root
.type
= bfd_link_hash_defined
;
6617 sh
->root
.u
.def
.section
= htab
->glink
;
6618 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6619 sh
->ref_regular
= 1;
6620 sh
->def_regular
= 1;
6621 sh
->ref_regular_nonweak
= 1;
6622 sh
->forced_local
= 1;
6624 sh
->root
.linker_def
= 1;
6629 if (htab
->glink
!= NULL
6630 && htab
->glink
->size
!= 0
6631 && htab
->glink_eh_frame
!= NULL
6632 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6633 && _bfd_elf_eh_frame_present (info
))
6635 s
= htab
->glink_eh_frame
;
6636 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6637 if (bfd_link_pic (info
))
6640 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6645 /* We've now determined the sizes of the various dynamic sections.
6646 Allocate memory for them. */
6648 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6650 bfd_boolean strip_section
= TRUE
;
6652 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6658 /* We'd like to strip these sections if they aren't needed, but if
6659 we've exported dynamic symbols from them we must leave them.
6660 It's too late to tell BFD to get rid of the symbols. */
6661 if (htab
->elf
.hplt
!= NULL
)
6662 strip_section
= FALSE
;
6663 /* Strip this section if we don't need it; see the
6666 else if (s
== htab
->iplt
6668 || s
== htab
->glink_eh_frame
6669 || s
== htab
->sgotplt
6671 || s
== htab
->dynbss
6672 || s
== htab
->dynsbss
)
6674 /* Strip these too. */
6676 else if (s
== htab
->sdata
[0].section
6677 || s
== htab
->sdata
[1].section
)
6679 strip_section
= (s
->flags
& SEC_KEEP
) == 0;
6681 else if (CONST_STRNEQ (bfd_get_section_name (htab
->elf
.dynobj
, s
),
6686 /* Remember whether there are any relocation sections. */
6689 /* We use the reloc_count field as a counter if we need
6690 to copy relocs into the output file. */
6696 /* It's not one of our sections, so don't allocate space. */
6700 if (s
->size
== 0 && strip_section
)
6702 /* If we don't need this section, strip it from the
6703 output file. This is mostly to handle .rela.bss and
6704 .rela.plt. We must create both sections in
6705 create_dynamic_sections, because they must be created
6706 before the linker maps input sections to output
6707 sections. The linker does that before
6708 adjust_dynamic_symbol is called, and it is that
6709 function which decides whether anything needs to go
6710 into these sections. */
6711 s
->flags
|= SEC_EXCLUDE
;
6715 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
6718 /* Allocate memory for the section contents. */
6719 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
6720 if (s
->contents
== NULL
)
6724 if (htab
->elf
.dynamic_sections_created
)
6726 /* Add some entries to the .dynamic section. We fill in the
6727 values later, in ppc_elf_finish_dynamic_sections, but we
6728 must add the entries now so that we get the correct size for
6729 the .dynamic section. The DT_DEBUG entry is filled in by the
6730 dynamic linker and used by the debugger. */
6731 #define add_dynamic_entry(TAG, VAL) \
6732 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6734 if (bfd_link_executable (info
))
6736 if (!add_dynamic_entry (DT_DEBUG
, 0))
6740 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
6742 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6743 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6744 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6745 || !add_dynamic_entry (DT_JMPREL
, 0))
6749 if (htab
->plt_type
== PLT_NEW
6750 && htab
->glink
!= NULL
6751 && htab
->glink
->size
!= 0)
6753 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
6755 if (!htab
->params
->no_tls_get_addr_opt
6756 && htab
->tls_get_addr
!= NULL
6757 && htab
->tls_get_addr
->plt
.plist
!= NULL
6758 && !add_dynamic_entry (DT_PPC_OPT
, PPC_OPT_TLS
))
6764 if (!add_dynamic_entry (DT_RELA
, 0)
6765 || !add_dynamic_entry (DT_RELASZ
, 0)
6766 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
6770 /* If any dynamic relocs apply to a read-only section, then we
6771 need a DT_TEXTREL entry. */
6772 if ((info
->flags
& DF_TEXTREL
) == 0)
6773 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
6776 if ((info
->flags
& DF_TEXTREL
) != 0)
6778 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6781 if (htab
->is_vxworks
6782 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
6785 #undef add_dynamic_entry
6787 if (htab
->glink_eh_frame
!= NULL
6788 && htab
->glink_eh_frame
->contents
!= NULL
)
6790 unsigned char *p
= htab
->glink_eh_frame
->contents
;
6793 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
6794 /* CIE length (rewrite in case little-endian). */
6795 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
6796 p
+= sizeof (glink_eh_frame_cie
);
6798 val
= htab
->glink_eh_frame
->size
- 4 - sizeof (glink_eh_frame_cie
);
6799 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6802 val
= p
- htab
->glink_eh_frame
->contents
;
6803 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6805 /* Offset to .glink. Set later. */
6808 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
, p
);
6813 if (bfd_link_pic (info
)
6814 && htab
->elf
.dynamic_sections_created
)
6816 bfd_vma adv
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8) >> 2;
6818 *p
++ = DW_CFA_advance_loc
+ adv
;
6821 *p
++ = DW_CFA_advance_loc1
;
6824 else if (adv
< 65536)
6826 *p
++ = DW_CFA_advance_loc2
;
6827 bfd_put_16 (htab
->elf
.dynobj
, adv
, p
);
6832 *p
++ = DW_CFA_advance_loc4
;
6833 bfd_put_32 (htab
->elf
.dynobj
, adv
, p
);
6836 *p
++ = DW_CFA_register
;
6839 *p
++ = DW_CFA_advance_loc
+ 4;
6840 *p
++ = DW_CFA_restore_extended
;
6843 BFD_ASSERT ((bfd_vma
) ((p
+ 3 - htab
->glink_eh_frame
->contents
) & -4)
6844 == htab
->glink_eh_frame
->size
);
6850 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6851 if it looks like nothing is using them. */
6854 maybe_strip_sdasym (bfd
*output_bfd
, elf_linker_section_t
*lsect
)
6856 struct elf_link_hash_entry
*sda
= lsect
->sym
;
6858 if (sda
!= NULL
&& !sda
->ref_regular
&& sda
->dynindx
== -1)
6862 s
= bfd_get_section_by_name (output_bfd
, lsect
->name
);
6863 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6865 s
= bfd_get_section_by_name (output_bfd
, lsect
->bss_name
);
6866 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6868 sda
->def_regular
= 0;
6869 /* This is somewhat magic. See elf_link_output_extsym. */
6870 sda
->ref_dynamic
= 1;
6871 sda
->forced_local
= 0;
6878 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info
*info
)
6880 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6884 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[0]);
6885 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[1]);
6890 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6893 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6895 if (h
->plt
.plist
!= NULL
6897 && (!h
->pointer_equality_needed
6898 || !h
->ref_regular_nonweak
))
6901 return _bfd_elf_hash_symbol (h
);
6904 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6906 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6907 used for some functions that are allowed to break the ABI). */
6908 static const int shared_stub_entry
[] =
6910 0x7c0802a6, /* mflr 0 */
6911 0x429f0005, /* bcl 20, 31, .Lxxx */
6912 0x7d8802a6, /* mflr 12 */
6913 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6914 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6915 0x7c0803a6, /* mtlr 0 */
6916 0x7d8903a6, /* mtctr 12 */
6917 0x4e800420, /* bctr */
6920 static const int stub_entry
[] =
6922 0x3d800000, /* lis 12,xxx@ha */
6923 0x398c0000, /* addi 12,12,xxx@l */
6924 0x7d8903a6, /* mtctr 12 */
6925 0x4e800420, /* bctr */
6928 struct ppc_elf_relax_info
6930 unsigned int workaround_size
;
6931 unsigned int picfixup_size
;
6934 /* This function implements long branch trampolines, and the ppc476
6935 icache bug workaround. Any section needing trampolines or patch
6936 space for the workaround has its size extended so that we can
6937 add trampolines at the end of the section. */
6940 ppc_elf_relax_section (bfd
*abfd
,
6942 struct bfd_link_info
*link_info
,
6945 struct one_branch_fixup
6947 struct one_branch_fixup
*next
;
6949 /* Final link, can use the symbol offset. For a
6950 relocatable link we use the symbol's index. */
6955 Elf_Internal_Shdr
*symtab_hdr
;
6956 bfd_byte
*contents
= NULL
;
6957 Elf_Internal_Sym
*isymbuf
= NULL
;
6958 Elf_Internal_Rela
*internal_relocs
= NULL
;
6959 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6960 struct one_branch_fixup
*branch_fixups
= NULL
;
6961 struct ppc_elf_relax_info
*relax_info
= NULL
;
6962 unsigned changes
= 0;
6963 bfd_boolean workaround_change
;
6964 struct ppc_elf_link_hash_table
*htab
;
6965 bfd_size_type trampbase
, trampoff
, newsize
, picfixup_size
;
6967 bfd_boolean maybe_pasted
;
6971 /* No need to do anything with non-alloc or non-code sections. */
6972 if ((isec
->flags
& SEC_ALLOC
) == 0
6973 || (isec
->flags
& SEC_CODE
) == 0
6974 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6978 /* We cannot represent the required PIC relocs in the output, so don't
6979 do anything. The linker doesn't support mixing -shared and -r
6981 if (bfd_link_relocatable (link_info
) && bfd_link_pic (link_info
))
6984 htab
= ppc_elf_hash_table (link_info
);
6988 isec
->size
= (isec
->size
+ 3) & -4;
6989 if (isec
->rawsize
== 0)
6990 isec
->rawsize
= isec
->size
;
6991 trampbase
= isec
->size
;
6993 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6994 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6995 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6997 if (htab
->params
->ppc476_workaround
6998 || htab
->params
->pic_fixup
> 0)
7000 if (elf_section_data (isec
)->sec_info
== NULL
)
7002 elf_section_data (isec
)->sec_info
7003 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
7004 if (elf_section_data (isec
)->sec_info
== NULL
)
7007 relax_info
= elf_section_data (isec
)->sec_info
;
7008 trampbase
-= relax_info
->workaround_size
;
7011 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
7012 || strcmp (isec
->output_section
->name
, ".fini") == 0);
7013 /* Space for a branch around any trampolines. */
7014 trampoff
= trampbase
;
7015 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
7018 symtab_hdr
= &elf_symtab_hdr (abfd
);
7020 if (htab
->params
->branch_trampolines
7021 || htab
->params
->pic_fixup
> 0)
7023 /* Get a copy of the native relocations. */
7024 if (isec
->reloc_count
!= 0)
7026 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
7027 link_info
->keep_memory
);
7028 if (internal_relocs
== NULL
)
7032 got2
= bfd_get_section_by_name (abfd
, ".got2");
7034 irelend
= internal_relocs
+ isec
->reloc_count
;
7035 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
7037 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
7040 struct one_branch_fixup
*f
;
7041 size_t insn_offset
= 0;
7042 bfd_vma max_branch_offset
= 0, val
;
7045 struct elf_link_hash_entry
*h
;
7046 struct plt_entry
**plist
;
7047 unsigned char sym_type
;
7052 case R_PPC_LOCAL24PC
:
7053 case R_PPC_PLTREL24
:
7054 max_branch_offset
= 1 << 25;
7058 case R_PPC_REL14_BRTAKEN
:
7059 case R_PPC_REL14_BRNTAKEN
:
7060 max_branch_offset
= 1 << 15;
7063 case R_PPC_ADDR16_HA
:
7064 if (htab
->params
->pic_fixup
> 0)
7072 /* Get the value of the symbol referred to by the reloc. */
7074 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
7076 /* A local symbol. */
7077 Elf_Internal_Sym
*isym
;
7079 /* Read this BFD's local symbols. */
7080 if (isymbuf
== NULL
)
7082 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7083 if (isymbuf
== NULL
)
7084 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
7085 symtab_hdr
->sh_info
, 0,
7090 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
7091 if (isym
->st_shndx
== SHN_UNDEF
)
7092 tsec
= bfd_und_section_ptr
;
7093 else if (isym
->st_shndx
== SHN_ABS
)
7094 tsec
= bfd_abs_section_ptr
;
7095 else if (isym
->st_shndx
== SHN_COMMON
)
7096 tsec
= bfd_com_section_ptr
;
7098 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
7100 toff
= isym
->st_value
;
7101 sym_type
= ELF_ST_TYPE (isym
->st_info
);
7105 /* Global symbol handling. */
7108 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
7109 h
= elf_sym_hashes (abfd
)[indx
];
7111 while (h
->root
.type
== bfd_link_hash_indirect
7112 || h
->root
.type
== bfd_link_hash_warning
)
7113 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7115 if (h
->root
.type
== bfd_link_hash_defined
7116 || h
->root
.type
== bfd_link_hash_defweak
)
7118 tsec
= h
->root
.u
.def
.section
;
7119 toff
= h
->root
.u
.def
.value
;
7121 else if (h
->root
.type
== bfd_link_hash_undefined
7122 || h
->root
.type
== bfd_link_hash_undefweak
)
7124 tsec
= bfd_und_section_ptr
;
7125 toff
= bfd_link_relocatable (link_info
) ? indx
: 0;
7130 /* If this branch is to __tls_get_addr then we may later
7131 optimise away the call. We won't be needing a long-
7132 branch stub in that case. */
7133 if (bfd_link_executable (link_info
)
7134 && h
== htab
->tls_get_addr
7135 && irel
!= internal_relocs
)
7137 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
7138 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
7139 unsigned int tls_mask
= 0;
7141 /* The previous reloc should be one of R_PPC_TLSGD or
7142 R_PPC_TLSLD, or for older object files, a reloc
7143 on the __tls_get_addr arg setup insn. Get tls
7144 mask bits from the symbol on that reloc. */
7145 if (t_symndx
< symtab_hdr
->sh_info
)
7147 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7149 if (local_got_offsets
!= NULL
)
7151 struct plt_entry
**local_plt
= (struct plt_entry
**)
7152 (local_got_offsets
+ symtab_hdr
->sh_info
);
7153 char *lgot_masks
= (char *)
7154 (local_plt
+ symtab_hdr
->sh_info
);
7155 tls_mask
= lgot_masks
[t_symndx
];
7160 struct elf_link_hash_entry
*th
7161 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
7163 while (th
->root
.type
== bfd_link_hash_indirect
7164 || th
->root
.type
== bfd_link_hash_warning
)
7165 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
7168 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
7171 /* The mask bits tell us if the call will be
7173 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
7174 && (t_rtype
== R_PPC_TLSGD
7175 || t_rtype
== R_PPC_GOT_TLSGD16
7176 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
7178 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
7179 && (t_rtype
== R_PPC_TLSLD
7180 || t_rtype
== R_PPC_GOT_TLSLD16
7181 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
7188 if (r_type
== R_PPC_ADDR16_HA
)
7193 && ppc_elf_hash_entry (h
)->has_addr16_ha
7194 && ppc_elf_hash_entry (h
)->has_addr16_lo
)
7195 picfixup_size
+= 12;
7199 /* The condition here under which we call find_plt_ent must
7200 match that in relocate_section. If we call find_plt_ent here
7201 but not in relocate_section, or vice versa, then the branch
7202 destination used here may be incorrect. */
7206 /* We know is_branch_reloc (r_type) is true. */
7207 if (h
->type
== STT_GNU_IFUNC
7208 || r_type
== R_PPC_PLTREL24
)
7209 plist
= &h
->plt
.plist
;
7211 else if (sym_type
== STT_GNU_IFUNC
7212 && elf_local_got_offsets (abfd
) != NULL
)
7214 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7215 struct plt_entry
**local_plt
= (struct plt_entry
**)
7216 (local_got_offsets
+ symtab_hdr
->sh_info
);
7217 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
7222 struct plt_entry
*ent
;
7224 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (link_info
))
7225 addend
= irel
->r_addend
;
7226 ent
= find_plt_ent (plist
, got2
, addend
);
7229 if (htab
->plt_type
== PLT_NEW
7231 || !htab
->elf
.dynamic_sections_created
7232 || h
->dynindx
== -1)
7235 toff
= ent
->glink_offset
;
7240 toff
= ent
->plt
.offset
;
7245 /* If the branch and target are in the same section, you have
7246 no hope of adding stubs. We'll error out later should the
7251 /* There probably isn't any reason to handle symbols in
7252 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7253 attribute for a code section, and we are only looking at
7254 branches. However, implement it correctly here as a
7255 reference for other target relax_section functions. */
7256 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
7258 /* At this stage in linking, no SEC_MERGE symbol has been
7259 adjusted, so all references to such symbols need to be
7260 passed through _bfd_merged_section_offset. (Later, in
7261 relocate_section, all SEC_MERGE symbols *except* for
7262 section symbols have been adjusted.)
7264 gas may reduce relocations against symbols in SEC_MERGE
7265 sections to a relocation against the section symbol when
7266 the original addend was zero. When the reloc is against
7267 a section symbol we should include the addend in the
7268 offset passed to _bfd_merged_section_offset, since the
7269 location of interest is the original symbol. On the
7270 other hand, an access to "sym+addend" where "sym" is not
7271 a section symbol should not include the addend; Such an
7272 access is presumed to be an offset from "sym"; The
7273 location of interest is just "sym". */
7274 if (sym_type
== STT_SECTION
)
7275 toff
+= irel
->r_addend
;
7278 = _bfd_merged_section_offset (abfd
, &tsec
,
7279 elf_section_data (tsec
)->sec_info
,
7282 if (sym_type
!= STT_SECTION
)
7283 toff
+= irel
->r_addend
;
7285 /* PLTREL24 addends are special. */
7286 else if (r_type
!= R_PPC_PLTREL24
)
7287 toff
+= irel
->r_addend
;
7289 /* Attempted -shared link of non-pic code loses. */
7290 if ((!bfd_link_relocatable (link_info
)
7291 && tsec
== bfd_und_section_ptr
)
7292 || tsec
->output_section
== NULL
7293 || (tsec
->owner
!= NULL
7294 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
7297 roff
= irel
->r_offset
;
7299 /* If the branch is in range, no need to do anything. */
7300 if (tsec
!= bfd_und_section_ptr
7301 && (!bfd_link_relocatable (link_info
)
7302 /* A relocatable link may have sections moved during
7303 final link, so do not presume they remain in range. */
7304 || tsec
->output_section
== isec
->output_section
))
7306 bfd_vma symaddr
, reladdr
;
7308 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7309 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7310 if (symaddr
- reladdr
+ max_branch_offset
7311 < 2 * max_branch_offset
)
7315 /* Look for an existing fixup to this address. */
7316 for (f
= branch_fixups
; f
; f
= f
->next
)
7317 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7323 unsigned long stub_rtype
;
7325 val
= trampoff
- roff
;
7326 if (val
>= max_branch_offset
)
7327 /* Oh dear, we can't reach a trampoline. Don't try to add
7328 one. We'll report an error later. */
7331 if (bfd_link_pic (link_info
))
7333 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7338 size
= 4 * ARRAY_SIZE (stub_entry
);
7341 stub_rtype
= R_PPC_RELAX
;
7342 if (tsec
== htab
->plt
7343 || tsec
== htab
->glink
)
7345 stub_rtype
= R_PPC_RELAX_PLT
;
7346 if (r_type
== R_PPC_PLTREL24
)
7347 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7350 /* Hijack the old relocation. Since we need two
7351 relocations for this use a "composite" reloc. */
7352 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7354 irel
->r_offset
= trampoff
+ insn_offset
;
7355 if (r_type
== R_PPC_PLTREL24
7356 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7359 /* Record the fixup so we don't do it again this section. */
7360 f
= bfd_malloc (sizeof (*f
));
7361 f
->next
= branch_fixups
;
7364 f
->trampoff
= trampoff
;
7372 val
= f
->trampoff
- roff
;
7373 if (val
>= max_branch_offset
)
7376 /* Nop out the reloc, since we're finalizing things here. */
7377 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7380 /* Get the section contents. */
7381 if (contents
== NULL
)
7383 /* Get cached copy if it exists. */
7384 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7385 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7386 /* Go get them off disk. */
7387 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7391 /* Fix up the existing branch to hit the trampoline. */
7392 hit_addr
= contents
+ roff
;
7396 case R_PPC_LOCAL24PC
:
7397 case R_PPC_PLTREL24
:
7398 t0
= bfd_get_32 (abfd
, hit_addr
);
7400 t0
|= val
& 0x3fffffc;
7401 bfd_put_32 (abfd
, t0
, hit_addr
);
7405 case R_PPC_REL14_BRTAKEN
:
7406 case R_PPC_REL14_BRNTAKEN
:
7407 t0
= bfd_get_32 (abfd
, hit_addr
);
7410 bfd_put_32 (abfd
, t0
, hit_addr
);
7415 while (branch_fixups
!= NULL
)
7417 struct one_branch_fixup
*f
= branch_fixups
;
7418 branch_fixups
= branch_fixups
->next
;
7423 workaround_change
= FALSE
;
7425 if (htab
->params
->ppc476_workaround
7426 && (!bfd_link_relocatable (link_info
)
7427 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7429 bfd_vma addr
, end_addr
;
7430 unsigned int crossings
;
7431 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7433 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7434 end_addr
= addr
+ trampoff
;
7436 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7439 /* Keep space aligned, to ensure the patch code itself does
7440 not cross a page. Don't decrease size calculated on a
7441 previous pass as otherwise we might never settle on a layout. */
7442 newsize
= 15 - ((end_addr
- 1) & 15);
7443 newsize
+= crossings
* 16;
7444 if (relax_info
->workaround_size
< newsize
)
7446 relax_info
->workaround_size
= newsize
;
7447 workaround_change
= TRUE
;
7449 /* Ensure relocate_section is called. */
7450 isec
->flags
|= SEC_RELOC
;
7452 newsize
= trampoff
+ relax_info
->workaround_size
;
7455 if (htab
->params
->pic_fixup
> 0)
7457 picfixup_size
-= relax_info
->picfixup_size
;
7458 if (picfixup_size
!= 0)
7459 relax_info
->picfixup_size
+= picfixup_size
;
7460 newsize
+= relax_info
->picfixup_size
;
7463 if (changes
!= 0 || picfixup_size
!= 0 || workaround_change
)
7464 isec
->size
= newsize
;
7467 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7469 if (! link_info
->keep_memory
)
7473 /* Cache the symbols for elf_link_input_bfd. */
7474 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7478 if (contents
!= NULL
7479 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7481 if (!changes
&& !link_info
->keep_memory
)
7485 /* Cache the section contents for elf_link_input_bfd. */
7486 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7490 changes
+= picfixup_size
;
7493 /* Append sufficient NOP relocs so we can write out relocation
7494 information for the trampolines. */
7495 Elf_Internal_Shdr
*rel_hdr
;
7496 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7497 * sizeof (*new_relocs
));
7502 memcpy (new_relocs
, internal_relocs
,
7503 isec
->reloc_count
* sizeof (*new_relocs
));
7504 for (ix
= changes
; ix
--;)
7506 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7508 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7510 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7511 free (internal_relocs
);
7512 elf_section_data (isec
)->relocs
= new_relocs
;
7513 isec
->reloc_count
+= changes
;
7514 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7515 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7517 else if (internal_relocs
!= NULL
7518 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7519 free (internal_relocs
);
7521 *again
= changes
!= 0 || workaround_change
;
7525 while (branch_fixups
!= NULL
)
7527 struct one_branch_fixup
*f
= branch_fixups
;
7528 branch_fixups
= branch_fixups
->next
;
7531 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7533 if (contents
!= NULL
7534 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7536 if (internal_relocs
!= NULL
7537 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7538 free (internal_relocs
);
7542 /* What to do when ld finds relocations against symbols defined in
7543 discarded sections. */
7546 ppc_elf_action_discarded (asection
*sec
)
7548 if (strcmp (".fixup", sec
->name
) == 0)
7551 if (strcmp (".got2", sec
->name
) == 0)
7554 return _bfd_elf_default_action_discarded (sec
);
7557 /* Fill in the address for a pointer generated in a linker section. */
7560 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7561 elf_linker_section_t
*lsect
,
7562 struct elf_link_hash_entry
*h
,
7564 const Elf_Internal_Rela
*rel
)
7566 elf_linker_section_pointers_t
*linker_section_ptr
;
7568 BFD_ASSERT (lsect
!= NULL
);
7572 /* Handle global symbol. */
7573 struct ppc_elf_link_hash_entry
*eh
;
7575 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7576 BFD_ASSERT (eh
->elf
.def_regular
);
7577 linker_section_ptr
= eh
->linker_section_pointer
;
7581 /* Handle local symbol. */
7582 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7584 BFD_ASSERT (is_ppc_elf (input_bfd
));
7585 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7586 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7589 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7592 BFD_ASSERT (linker_section_ptr
!= NULL
);
7594 /* Offset will always be a multiple of four, so use the bottom bit
7595 as a "written" flag. */
7596 if ((linker_section_ptr
->offset
& 1) == 0)
7598 bfd_put_32 (lsect
->section
->owner
,
7599 relocation
+ linker_section_ptr
->addend
,
7600 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7601 linker_section_ptr
->offset
+= 1;
7604 relocation
= (lsect
->section
->output_section
->vma
7605 + lsect
->section
->output_offset
7606 + linker_section_ptr
->offset
- 1
7607 - SYM_VAL (lsect
->sym
));
7611 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7612 lsect
->name
, (long) relocation
, (long) relocation
);
7618 #define PPC_LO(v) ((v) & 0xffff)
7619 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7620 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7623 write_glink_stub (struct plt_entry
*ent
, asection
*plt_sec
, unsigned char *p
,
7624 struct bfd_link_info
*info
)
7626 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7627 bfd
*output_bfd
= info
->output_bfd
;
7630 plt
= ((ent
->plt
.offset
& ~1)
7631 + plt_sec
->output_section
->vma
7632 + plt_sec
->output_offset
);
7634 if (bfd_link_pic (info
))
7638 if (ent
->addend
>= 32768)
7640 + ent
->sec
->output_section
->vma
7641 + ent
->sec
->output_offset
);
7642 else if (htab
->elf
.hgot
!= NULL
)
7643 got
= SYM_VAL (htab
->elf
.hgot
);
7647 if (plt
+ 0x8000 < 0x10000)
7649 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7651 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7653 bfd_put_32 (output_bfd
, BCTR
, p
);
7655 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7660 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7662 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7664 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7666 bfd_put_32 (output_bfd
, BCTR
, p
);
7672 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7674 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7676 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7678 bfd_put_32 (output_bfd
, BCTR
, p
);
7683 /* Return true if symbol is defined statically. */
7686 is_static_defined (struct elf_link_hash_entry
*h
)
7688 return ((h
->root
.type
== bfd_link_hash_defined
7689 || h
->root
.type
== bfd_link_hash_defweak
)
7690 && h
->root
.u
.def
.section
!= NULL
7691 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7694 /* If INSN is an opcode that may be used with an @tls operand, return
7695 the transformed insn for TLS optimisation, otherwise return 0. If
7696 REG is non-zero only match an insn with RB or RA equal to REG. */
7699 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7703 if ((insn
& (0x3f << 26)) != 31 << 26)
7706 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7707 rtra
= insn
& ((1 << 26) - (1 << 16));
7708 else if (((insn
>> 16) & 0x1f) == reg
)
7709 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7713 if ((insn
& (0x3ff << 1)) == 266 << 1)
7716 else if ((insn
& (0x1f << 1)) == 23 << 1
7717 && ((insn
& (0x1f << 6)) < 14 << 6
7718 || ((insn
& (0x1f << 6)) >= 16 << 6
7719 && (insn
& (0x1f << 6)) < 24 << 6)))
7720 /* load and store indexed -> dform. */
7721 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7722 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7723 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7724 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7725 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7727 insn
= (58 << 26) | 2;
7734 /* If INSN is an opcode that may be used with an @tprel operand, return
7735 the transformed insn for an undefined weak symbol, ie. with the
7736 thread pointer REG operand removed. Otherwise return 0. */
7739 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7741 if ((insn
& (0x1f << 16)) == reg
<< 16
7742 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7743 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7744 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7745 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7746 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7747 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7748 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7749 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7750 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7751 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7752 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7753 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7754 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7755 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7756 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7757 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7759 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7760 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7762 insn
&= ~(0x1f << 16);
7764 else if ((insn
& (0x1f << 21)) == reg
<< 21
7765 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7766 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7767 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7769 insn
&= ~(0x1f << 21);
7770 insn
|= (insn
& (0x1f << 16)) << 5;
7771 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7772 insn
-= 2 >> 26; /* convert to ori,oris */
7780 is_insn_ds_form (unsigned int insn
)
7782 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7783 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7784 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7785 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7789 is_insn_dq_form (unsigned int insn
)
7791 return ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
7792 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7793 && (insn
& 3) == 1));
7796 /* The RELOCATE_SECTION function is called by the ELF backend linker
7797 to handle the relocations for a section.
7799 The relocs are always passed as Rela structures; if the section
7800 actually uses Rel structures, the r_addend field will always be
7803 This function is responsible for adjust the section contents as
7804 necessary, and (if using Rela relocs and generating a
7805 relocatable output file) adjusting the reloc addend as
7808 This function does not have to worry about setting the reloc
7809 address or the reloc symbol index.
7811 LOCAL_SYMS is a pointer to the swapped in local symbols.
7813 LOCAL_SECTIONS is an array giving the section in the input file
7814 corresponding to the st_shndx field of each local symbol.
7816 The global hash table entry for the global symbols can be found
7817 via elf_sym_hashes (input_bfd).
7819 When generating relocatable output, this function must handle
7820 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7821 going to be the section symbol corresponding to the output
7822 section, which means that the addend must be adjusted
7826 ppc_elf_relocate_section (bfd
*output_bfd
,
7827 struct bfd_link_info
*info
,
7829 asection
*input_section
,
7831 Elf_Internal_Rela
*relocs
,
7832 Elf_Internal_Sym
*local_syms
,
7833 asection
**local_sections
)
7835 Elf_Internal_Shdr
*symtab_hdr
;
7836 struct elf_link_hash_entry
**sym_hashes
;
7837 struct ppc_elf_link_hash_table
*htab
;
7838 Elf_Internal_Rela
*rel
;
7839 Elf_Internal_Rela
*wrel
;
7840 Elf_Internal_Rela
*relend
;
7841 Elf_Internal_Rela outrel
;
7843 bfd_vma
*local_got_offsets
;
7844 bfd_boolean ret
= TRUE
;
7845 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
7846 bfd_boolean is_vxworks_tls
;
7847 unsigned int picfixup_size
= 0;
7848 struct ppc_elf_relax_info
*relax_info
= NULL
;
7851 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7852 "%ld relocations%s",
7853 input_bfd
, input_section
,
7854 (long) input_section
->reloc_count
,
7855 (bfd_link_relocatable (info
)) ? " (relocatable)" : "");
7858 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7860 /* Initialize howto table if not already done. */
7861 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7862 ppc_elf_howto_init ();
7864 htab
= ppc_elf_hash_table (info
);
7865 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7866 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7867 sym_hashes
= elf_sym_hashes (input_bfd
);
7868 /* We have to handle relocations in vxworks .tls_vars sections
7869 specially, because the dynamic loader is 'weird'. */
7870 is_vxworks_tls
= (htab
->is_vxworks
&& bfd_link_pic (info
)
7871 && !strcmp (input_section
->output_section
->name
,
7873 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
)
7874 relax_info
= elf_section_data (input_section
)->sec_info
;
7875 rel
= wrel
= relocs
;
7876 relend
= relocs
+ input_section
->reloc_count
;
7877 for (; rel
< relend
; wrel
++, rel
++)
7879 enum elf_ppc_reloc_type r_type
;
7881 bfd_reloc_status_type r
;
7882 Elf_Internal_Sym
*sym
;
7884 struct elf_link_hash_entry
*h
;
7885 const char *sym_name
;
7886 reloc_howto_type
*howto
;
7887 unsigned long r_symndx
;
7889 bfd_vma branch_bit
, from
;
7890 bfd_boolean unresolved_reloc
;
7892 unsigned int tls_type
, tls_mask
, tls_gd
;
7893 struct plt_entry
**ifunc
;
7894 struct reloc_howto_struct alt_howto
;
7897 r_type
= ELF32_R_TYPE (rel
->r_info
);
7901 unresolved_reloc
= FALSE
;
7903 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7905 if (r_symndx
< symtab_hdr
->sh_info
)
7907 sym
= local_syms
+ r_symndx
;
7908 sec
= local_sections
[r_symndx
];
7909 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7911 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7915 bfd_boolean ignored
;
7917 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7918 r_symndx
, symtab_hdr
, sym_hashes
,
7920 unresolved_reloc
, warned
, ignored
);
7922 sym_name
= h
->root
.root
.string
;
7925 if (sec
!= NULL
&& discarded_section (sec
))
7927 /* For relocs against symbols from removed linkonce sections,
7928 or sections discarded by a linker script, we just want the
7929 section contents zeroed. Avoid any special processing. */
7931 if (r_type
< R_PPC_max
)
7932 howto
= ppc_elf_howto_table
[r_type
];
7934 _bfd_clear_contents (howto
, input_bfd
, input_section
,
7935 contents
+ rel
->r_offset
);
7936 wrel
->r_offset
= rel
->r_offset
;
7940 /* For ld -r, remove relocations in debug sections against
7941 sections defined in discarded sections. Not done for
7942 non-debug to preserve relocs in .eh_frame which the
7943 eh_frame editing code expects to be present. */
7944 if (bfd_link_relocatable (info
)
7945 && (input_section
->flags
& SEC_DEBUGGING
))
7951 if (bfd_link_relocatable (info
))
7954 && r_type
== R_PPC_PLTREL24
7955 && rel
->r_addend
!= 0)
7957 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7958 addend specifies the GOT pointer offset within .got2. */
7959 rel
->r_addend
+= got2
->output_offset
;
7961 if (r_type
!= R_PPC_RELAX_PLT
7962 && r_type
!= R_PPC_RELAX_PLTREL24
7963 && r_type
!= R_PPC_RELAX
)
7967 /* TLS optimizations. Replace instruction sequences and relocs
7968 based on information we collected in tls_optimize. We edit
7969 RELOCS so that --emit-relocs will output something sensible
7970 for the final instruction stream. */
7974 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7975 else if (local_got_offsets
!= NULL
)
7977 struct plt_entry
**local_plt
;
7980 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7981 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7982 tls_mask
= lgot_masks
[r_symndx
];
7985 /* Ensure reloc mapping code below stays sane. */
7986 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7987 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7988 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7989 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7990 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7991 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7992 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7993 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
8000 case R_PPC_GOT_TPREL16
:
8001 case R_PPC_GOT_TPREL16_LO
:
8002 if ((tls_mask
& TLS_TLS
) != 0
8003 && (tls_mask
& TLS_TPREL
) == 0)
8007 insn
= bfd_get_32 (input_bfd
,
8008 contents
+ rel
->r_offset
- d_offset
);
8010 insn
|= 0x3c020000; /* addis 0,2,0 */
8011 bfd_put_32 (input_bfd
, insn
,
8012 contents
+ rel
->r_offset
- d_offset
);
8013 r_type
= R_PPC_TPREL16_HA
;
8014 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8019 if ((tls_mask
& TLS_TLS
) != 0
8020 && (tls_mask
& TLS_TPREL
) == 0)
8024 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
8025 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
8028 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
8029 r_type
= R_PPC_TPREL16_LO
;
8030 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8032 /* Was PPC_TLS which sits on insn boundary, now
8033 PPC_TPREL16_LO which is at low-order half-word. */
8034 rel
->r_offset
+= d_offset
;
8038 case R_PPC_GOT_TLSGD16_HI
:
8039 case R_PPC_GOT_TLSGD16_HA
:
8040 tls_gd
= TLS_TPRELGD
;
8041 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
8045 case R_PPC_GOT_TLSLD16_HI
:
8046 case R_PPC_GOT_TLSLD16_HA
:
8047 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
8050 if ((tls_mask
& tls_gd
) != 0)
8051 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
8052 + R_PPC_GOT_TPREL16
);
8055 rel
->r_offset
-= d_offset
;
8056 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
8057 r_type
= R_PPC_NONE
;
8059 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8063 case R_PPC_GOT_TLSGD16
:
8064 case R_PPC_GOT_TLSGD16_LO
:
8065 tls_gd
= TLS_TPRELGD
;
8066 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
8070 case R_PPC_GOT_TLSLD16
:
8071 case R_PPC_GOT_TLSLD16_LO
:
8072 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
8074 unsigned int insn1
, insn2
;
8078 offset
= (bfd_vma
) -1;
8079 /* If not using the newer R_PPC_TLSGD/LD to mark
8080 __tls_get_addr calls, we must trust that the call
8081 stays with its arg setup insns, ie. that the next
8082 reloc is the __tls_get_addr call associated with
8083 the current reloc. Edit both insns. */
8084 if (input_section
->has_tls_get_addr_call
8086 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
8087 htab
->tls_get_addr
))
8088 offset
= rel
[1].r_offset
;
8089 /* We read the low GOT_TLS insn because we need to keep
8090 the destination reg. It may be something other than
8091 the usual r3, and moved to r3 before the call by
8092 intervening code. */
8093 insn1
= bfd_get_32 (input_bfd
,
8094 contents
+ rel
->r_offset
- d_offset
);
8095 if ((tls_mask
& tls_gd
) != 0)
8098 insn1
&= (0x1f << 21) | (0x1f << 16);
8099 insn1
|= 32 << 26; /* lwz */
8100 if (offset
!= (bfd_vma
) -1)
8102 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8103 insn2
= 0x7c631214; /* add 3,3,2 */
8104 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
8106 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
8107 + R_PPC_GOT_TPREL16
);
8108 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8113 insn1
&= 0x1f << 21;
8114 insn1
|= 0x3c020000; /* addis r,2,0 */
8117 /* Was an LD reloc. */
8119 r_symndx
< symtab_hdr
->sh_info
;
8121 if (local_sections
[r_symndx
] == sec
)
8123 if (r_symndx
>= symtab_hdr
->sh_info
)
8124 r_symndx
= STN_UNDEF
;
8125 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8126 if (r_symndx
!= STN_UNDEF
)
8127 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8128 + sec
->output_offset
8129 + sec
->output_section
->vma
);
8131 r_type
= R_PPC_TPREL16_HA
;
8132 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8133 if (offset
!= (bfd_vma
) -1)
8135 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8136 rel
[1].r_offset
= offset
+ d_offset
;
8137 rel
[1].r_addend
= rel
->r_addend
;
8138 insn2
= 0x38630000; /* addi 3,3,0 */
8139 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
8142 bfd_put_32 (input_bfd
, insn1
,
8143 contents
+ rel
->r_offset
- d_offset
);
8146 /* We changed the symbol on an LD reloc. Start over
8147 in order to get h, sym, sec etc. right. */
8154 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
8157 bfd_vma offset
= rel
->r_offset
;
8159 if ((tls_mask
& TLS_TPRELGD
) != 0)
8162 r_type
= R_PPC_NONE
;
8163 insn2
= 0x7c631214; /* add 3,3,2 */
8168 r_type
= R_PPC_TPREL16_LO
;
8169 rel
->r_offset
+= d_offset
;
8170 insn2
= 0x38630000; /* addi 3,3,0 */
8172 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8173 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
8174 /* Zap the reloc on the _tls_get_addr call too. */
8175 BFD_ASSERT (offset
== rel
[1].r_offset
);
8176 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8181 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
8186 r_symndx
< symtab_hdr
->sh_info
;
8188 if (local_sections
[r_symndx
] == sec
)
8190 if (r_symndx
>= symtab_hdr
->sh_info
)
8191 r_symndx
= STN_UNDEF
;
8192 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8193 if (r_symndx
!= STN_UNDEF
)
8194 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8195 + sec
->output_offset
8196 + sec
->output_section
->vma
);
8198 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8199 rel
->r_offset
+= d_offset
;
8200 insn2
= 0x38630000; /* addi 3,3,0 */
8201 bfd_put_32 (input_bfd
, insn2
,
8202 contents
+ rel
->r_offset
- d_offset
);
8203 /* Zap the reloc on the _tls_get_addr call too. */
8204 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
8205 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8211 /* Handle other relocations that tweak non-addend part of insn. */
8218 /* Branch taken prediction relocations. */
8219 case R_PPC_ADDR14_BRTAKEN
:
8220 case R_PPC_REL14_BRTAKEN
:
8221 branch_bit
= BRANCH_PREDICT_BIT
;
8224 /* Branch not taken prediction relocations. */
8225 case R_PPC_ADDR14_BRNTAKEN
:
8226 case R_PPC_REL14_BRNTAKEN
:
8230 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
8231 insn
&= ~BRANCH_PREDICT_BIT
;
8234 from
= (rel
->r_offset
8235 + input_section
->output_offset
8236 + input_section
->output_section
->vma
);
8238 /* Invert 'y' bit if not the default. */
8239 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
8240 insn
^= BRANCH_PREDICT_BIT
;
8242 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
8247 if (ELIMINATE_COPY_RELOCS
8251 && ppc_elf_hash_entry (h
)->has_addr16_ha
8252 && ppc_elf_hash_entry (h
)->has_addr16_lo
8253 && htab
->params
->pic_fixup
> 0)
8255 /* Convert lis;addi or lis;load/store accessing a protected
8256 variable defined in a shared library to PIC. */
8259 if (r_type
== R_PPC_ADDR16_HA
)
8261 insn
= bfd_get_32 (input_bfd
,
8262 contents
+ rel
->r_offset
- d_offset
);
8263 if ((insn
& (0x3f << 26)) == (15u << 26)
8264 && (insn
& (0x1f << 16)) == 0 /* lis */)
8270 p
= (contents
+ input_section
->size
8271 - relax_info
->workaround_size
8272 - relax_info
->picfixup_size
8274 off
= (p
- contents
) - (rel
->r_offset
- d_offset
);
8275 if (off
> 0x1fffffc || (off
& 3) != 0)
8276 info
->callbacks
->einfo
8277 (_("%P: %H: fixup branch overflow\n"),
8278 input_bfd
, input_section
, rel
->r_offset
);
8280 bfd_put_32 (input_bfd
, B
| off
,
8281 contents
+ rel
->r_offset
- d_offset
);
8282 got_addr
= (htab
->got
->output_section
->vma
8283 + htab
->got
->output_offset
8284 + (h
->got
.offset
& ~1));
8285 wrel
->r_offset
= (p
- contents
) + d_offset
;
8286 wrel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_HA
);
8287 wrel
->r_addend
= got_addr
;
8289 insn
|= ((unsigned int )(got_addr
+ 0x8000) >> 16) & 0xffff;
8290 bfd_put_32 (input_bfd
, insn
, p
);
8292 /* Convert lis to lwz, loading address from GOT. */
8294 insn
^= (32u ^ 15u) << 26;
8295 insn
|= (insn
& (0x1f << 21)) >> 5;
8296 insn
|= got_addr
& 0xffff;
8297 bfd_put_32 (input_bfd
, insn
, p
+ 4);
8299 bfd_put_32 (input_bfd
, B
| ((-4 - off
) & 0x3ffffff), p
+ 8);
8300 picfixup_size
+= 12;
8302 /* Use one of the spare relocs, so --emit-relocs
8303 output is reasonable. */
8304 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8306 rel
->r_offset
= wrel
[-1].r_offset
+ 4;
8307 rel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_LO
);
8308 rel
->r_addend
= wrel
[-1].r_addend
;
8310 /* Continue on as if we had a got reloc, to output
8312 r_type
= R_PPC_GOT16_LO
;
8315 info
->callbacks
->einfo
8316 /* xgettext:c-format */
8317 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8318 input_bfd
, input_section
, rel
->r_offset
,
8319 "R_PPC_ADDR16_HA", insn
);
8321 else if (r_type
== R_PPC_ADDR16_LO
)
8323 insn
= bfd_get_32 (input_bfd
,
8324 contents
+ rel
->r_offset
- d_offset
);
8325 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8326 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8327 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8328 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8329 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8330 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8331 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8332 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8333 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8334 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8335 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8336 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8337 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8338 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8339 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8341 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8342 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
8344 /* Arrange to apply the reloc addend, if any. */
8346 unresolved_reloc
= FALSE
;
8347 rel
->r_info
= ELF32_R_INFO (0, r_type
);
8350 info
->callbacks
->einfo
8351 /* xgettext:c-format */
8352 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8353 input_bfd
, input_section
, rel
->r_offset
,
8354 "R_PPC_ADDR16_LO", insn
);
8359 if (!htab
->is_vxworks
)
8361 struct plt_entry
*ent
;
8365 if (h
->type
== STT_GNU_IFUNC
)
8366 ifunc
= &h
->plt
.plist
;
8368 else if (local_got_offsets
!= NULL
8369 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8371 struct plt_entry
**local_plt
;
8373 local_plt
= (struct plt_entry
**) (local_got_offsets
8374 + symtab_hdr
->sh_info
);
8375 ifunc
= local_plt
+ r_symndx
;
8380 && (!bfd_link_pic (info
)
8381 || is_branch_reloc (r_type
)))
8384 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
8385 addend
= rel
->r_addend
;
8386 ent
= find_plt_ent (ifunc
, got2
, addend
);
8390 if (bfd_link_pic (info
)
8392 && htab
->plt_type
!= PLT_NEW
8393 && (!htab
->elf
.dynamic_sections_created
8395 || h
->dynindx
== -1))
8397 /* Uh oh, we are going to create a pic glink stub
8398 for an ifunc (here for h == NULL and later in
8399 finish_dynamic_symbol for h != NULL), and
8400 apparently are using code compiled with
8401 -mbss-plt. The difficulty is that -mbss-plt code
8402 gives no indication via a magic PLTREL24 addend
8403 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8404 is pointing into a .got2 section (and how far
8406 info
->callbacks
->einfo
8407 /* xgettext:c-format */
8408 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8409 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
8411 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
8413 Elf_Internal_Rela rela
;
8416 rela
.r_offset
= (htab
->iplt
->output_section
->vma
8417 + htab
->iplt
->output_offset
8419 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8420 rela
.r_addend
= relocation
;
8421 loc
= htab
->reliplt
->contents
;
8422 loc
+= (htab
->reliplt
->reloc_count
++
8423 * sizeof (Elf32_External_Rela
));
8424 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8426 ent
->plt
.offset
|= 1;
8428 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
8430 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
8431 + ent
->glink_offset
);
8432 write_glink_stub (ent
, htab
->iplt
, p
, info
);
8433 ent
->glink_offset
|= 1;
8436 unresolved_reloc
= FALSE
;
8437 if (htab
->plt_type
== PLT_NEW
8438 || !htab
->elf
.dynamic_sections_created
8440 || h
->dynindx
== -1)
8441 relocation
= (htab
->glink
->output_section
->vma
8442 + htab
->glink
->output_offset
8443 + (ent
->glink_offset
& ~1));
8445 relocation
= (htab
->plt
->output_section
->vma
8446 + htab
->plt
->output_offset
8451 addend
= rel
->r_addend
;
8454 if (r_type
< R_PPC_max
)
8455 howto
= ppc_elf_howto_table
[r_type
];
8459 info
->callbacks
->einfo
8460 /* xgettext:c-format */
8461 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8462 input_bfd
, (int) r_type
, sym_name
);
8464 bfd_set_error (bfd_error_bad_value
);
8472 case R_PPC_EMB_MRKREF
:
8473 case R_PPC_GNU_VTINHERIT
:
8474 case R_PPC_GNU_VTENTRY
:
8477 /* GOT16 relocations. Like an ADDR16 using the symbol's
8478 address in the GOT as relocation value instead of the
8479 symbol's value itself. Also, create a GOT entry for the
8480 symbol and put the symbol value there. */
8481 case R_PPC_GOT_TLSGD16
:
8482 case R_PPC_GOT_TLSGD16_LO
:
8483 case R_PPC_GOT_TLSGD16_HI
:
8484 case R_PPC_GOT_TLSGD16_HA
:
8485 tls_type
= TLS_TLS
| TLS_GD
;
8488 case R_PPC_GOT_TLSLD16
:
8489 case R_PPC_GOT_TLSLD16_LO
:
8490 case R_PPC_GOT_TLSLD16_HI
:
8491 case R_PPC_GOT_TLSLD16_HA
:
8492 tls_type
= TLS_TLS
| TLS_LD
;
8495 case R_PPC_GOT_TPREL16
:
8496 case R_PPC_GOT_TPREL16_LO
:
8497 case R_PPC_GOT_TPREL16_HI
:
8498 case R_PPC_GOT_TPREL16_HA
:
8499 tls_type
= TLS_TLS
| TLS_TPREL
;
8502 case R_PPC_GOT_DTPREL16
:
8503 case R_PPC_GOT_DTPREL16_LO
:
8504 case R_PPC_GOT_DTPREL16_HI
:
8505 case R_PPC_GOT_DTPREL16_HA
:
8506 tls_type
= TLS_TLS
| TLS_DTPREL
;
8510 case R_PPC_GOT16_LO
:
8511 case R_PPC_GOT16_HI
:
8512 case R_PPC_GOT16_HA
:
8516 /* Relocation is to the entry for this symbol in the global
8522 if (htab
->got
== NULL
)
8526 if (tls_type
== (TLS_TLS
| TLS_LD
)
8528 || !h
->def_dynamic
))
8529 offp
= &htab
->tlsld_got
.offset
;
8533 dyn
= htab
->elf
.dynamic_sections_created
;
8534 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
8535 || (bfd_link_pic (info
)
8536 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
8537 /* This is actually a static link, or it is a
8538 -Bsymbolic link and the symbol is defined
8539 locally, or the symbol was forced to be local
8540 because of a version file. */
8544 BFD_ASSERT (h
->dynindx
!= -1);
8546 unresolved_reloc
= FALSE
;
8548 offp
= &h
->got
.offset
;
8552 if (local_got_offsets
== NULL
)
8554 offp
= &local_got_offsets
[r_symndx
];
8557 /* The offset must always be a multiple of 4. We use the
8558 least significant bit to record whether we have already
8559 processed this entry. */
8565 unsigned int tls_m
= (tls_mask
8566 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8567 | TLS_TPREL
| TLS_TPRELGD
));
8569 if (offp
== &htab
->tlsld_got
.offset
)
8575 /* We might have multiple got entries for this sym.
8576 Initialize them all. */
8581 if ((tls_m
& TLS_LD
) != 0)
8583 tls_ty
= TLS_TLS
| TLS_LD
;
8586 else if ((tls_m
& TLS_GD
) != 0)
8588 tls_ty
= TLS_TLS
| TLS_GD
;
8591 else if ((tls_m
& TLS_DTPREL
) != 0)
8593 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8594 tls_m
&= ~TLS_DTPREL
;
8596 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8598 tls_ty
= TLS_TLS
| TLS_TPREL
;
8602 /* Generate relocs for the dynamic linker. */
8603 if ((bfd_link_pic (info
) || indx
!= 0)
8604 && (offp
== &htab
->tlsld_got
.offset
8606 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8607 || h
->root
.type
!= bfd_link_hash_undefweak
))
8609 asection
*rsec
= htab
->relgot
;
8613 rsec
= htab
->reliplt
;
8614 outrel
.r_offset
= (htab
->got
->output_section
->vma
8615 + htab
->got
->output_offset
8617 outrel
.r_addend
= 0;
8618 if (tls_ty
& (TLS_LD
| TLS_GD
))
8620 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8621 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8623 loc
= rsec
->contents
;
8624 loc
+= (rsec
->reloc_count
++
8625 * sizeof (Elf32_External_Rela
));
8626 bfd_elf32_swap_reloca_out (output_bfd
,
8628 outrel
.r_offset
+= 4;
8630 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8633 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8634 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8635 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8636 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8638 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8639 else if (ifunc
!= NULL
)
8640 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8642 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8643 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8645 outrel
.r_addend
+= relocation
;
8646 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8648 if (htab
->elf
.tls_sec
== NULL
)
8649 outrel
.r_addend
= 0;
8651 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8654 loc
= rsec
->contents
;
8655 loc
+= (rsec
->reloc_count
++
8656 * sizeof (Elf32_External_Rela
));
8657 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8660 /* Init the .got section contents if we're not
8661 emitting a reloc. */
8664 bfd_vma value
= relocation
;
8666 if (tls_ty
== (TLS_TLS
| TLS_LD
))
8668 else if (tls_ty
!= 0)
8670 if (htab
->elf
.tls_sec
== NULL
)
8674 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8675 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8676 value
+= DTP_OFFSET
- TP_OFFSET
;
8679 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8681 bfd_put_32 (input_bfd
, value
,
8682 htab
->got
->contents
+ off
+ 4);
8686 bfd_put_32 (input_bfd
, value
,
8687 htab
->got
->contents
+ off
);
8691 if (tls_ty
& (TLS_LD
| TLS_GD
))
8700 if (off
>= (bfd_vma
) -2)
8703 if ((tls_type
& TLS_TLS
) != 0)
8705 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8707 if ((tls_mask
& TLS_LD
) != 0
8709 || !h
->def_dynamic
))
8711 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8713 if ((tls_mask
& TLS_GD
) != 0)
8715 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8717 if ((tls_mask
& TLS_DTPREL
) != 0)
8724 /* If here for a picfixup, we're done. */
8725 if (r_type
!= ELF32_R_TYPE (rel
->r_info
))
8728 relocation
= (htab
->got
->output_section
->vma
8729 + htab
->got
->output_offset
8731 - SYM_VAL (htab
->elf
.hgot
));
8733 /* Addends on got relocations don't make much sense.
8734 x+off@got is actually x@got+off, and since the got is
8735 generated by a hash table traversal, the value in the
8736 got at entry m+n bears little relation to the entry m. */
8738 info
->callbacks
->einfo
8739 /* xgettext:c-format */
8740 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8741 input_bfd
, input_section
, rel
->r_offset
,
8747 /* Relocations that need no special processing. */
8748 case R_PPC_LOCAL24PC
:
8749 /* It makes no sense to point a local relocation
8750 at a symbol not in this object. */
8751 if (unresolved_reloc
)
8753 (*info
->callbacks
->undefined_symbol
) (info
,
8754 h
->root
.root
.string
,
8761 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
&& bfd_link_pic (info
))
8763 /* @local on an ifunc does not really make sense since
8764 the ifunc resolver can take you anywhere. More
8765 seriously, calls to ifuncs must go through a plt call
8766 stub, and for pic the plt call stubs uses r30 to
8767 access the PLT. The problem is that a call that is
8768 local won't have the +32k reloc addend trick marking
8769 -fPIC code, so the linker won't know whether r30 is
8770 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8771 /* xgettext:c-format */
8772 info
->callbacks
->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8773 input_bfd
, input_section
, rel
->r_offset
,
8774 h
->root
.root
.string
);
8778 case R_PPC_DTPREL16
:
8779 case R_PPC_DTPREL16_LO
:
8780 case R_PPC_DTPREL16_HI
:
8781 case R_PPC_DTPREL16_HA
:
8782 if (htab
->elf
.tls_sec
!= NULL
)
8783 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8786 /* Relocations that may need to be propagated if this is a shared
8789 case R_PPC_TPREL16_LO
:
8790 case R_PPC_TPREL16_HI
:
8791 case R_PPC_TPREL16_HA
:
8793 && h
->root
.type
== bfd_link_hash_undefweak
8794 && h
->dynindx
== -1)
8796 /* Make this relocation against an undefined weak symbol
8797 resolve to zero. This is really just a tweak, since
8798 code using weak externs ought to check that they are
8799 defined before using them. */
8800 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8801 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8802 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8804 bfd_put_32 (input_bfd
, insn
, p
);
8807 if (htab
->elf
.tls_sec
!= NULL
)
8808 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8809 /* The TPREL16 relocs shouldn't really be used in shared
8810 libs as they will result in DT_TEXTREL being set, but
8811 support them anyway. */
8815 if (htab
->elf
.tls_sec
!= NULL
)
8816 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8819 case R_PPC_DTPREL32
:
8820 if (htab
->elf
.tls_sec
!= NULL
)
8821 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8824 case R_PPC_DTPMOD32
:
8830 case R_PPC_REL16_LO
:
8831 case R_PPC_REL16_HI
:
8832 case R_PPC_REL16_HA
:
8833 case R_PPC_REL16DX_HA
:
8837 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8843 case R_PPC_ADDR16_LO
:
8844 case R_PPC_ADDR16_HI
:
8845 case R_PPC_ADDR16_HA
:
8850 case R_PPC_VLE_REL8
:
8851 case R_PPC_VLE_REL15
:
8852 case R_PPC_VLE_REL24
:
8855 case R_PPC_REL14_BRTAKEN
:
8856 case R_PPC_REL14_BRNTAKEN
:
8857 /* If these relocations are not to a named symbol, they can be
8858 handled right here, no need to bother the dynamic linker. */
8859 if (SYMBOL_CALLS_LOCAL (info
, h
)
8860 || h
== htab
->elf
.hgot
)
8866 case R_PPC_ADDR14_BRTAKEN
:
8867 case R_PPC_ADDR14_BRNTAKEN
:
8868 if (h
!= NULL
&& !bfd_link_pic (info
))
8873 if ((input_section
->flags
& SEC_ALLOC
) == 0
8877 if ((bfd_link_pic (info
)
8879 && ((h
->root
.type
== bfd_link_hash_undefined
8880 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
8881 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
8882 || (h
->root
.type
== bfd_link_hash_undefweak
8883 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)))
8884 && (must_be_dyn_reloc (info
, r_type
)
8885 || !SYMBOL_CALLS_LOCAL (info
, h
)))
8886 || (ELIMINATE_COPY_RELOCS
8887 && !bfd_link_pic (info
)
8892 && !(h
->protected_def
8893 && ppc_elf_hash_entry (h
)->has_addr16_ha
8894 && ppc_elf_hash_entry (h
)->has_addr16_lo
8895 && htab
->params
->pic_fixup
> 0)))
8901 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8902 "create relocation for %s\n",
8903 (h
&& h
->root
.root
.string
8904 ? h
->root
.root
.string
: "<unknown>"));
8907 /* When generating a shared object, these relocations
8908 are copied into the output file to be resolved at run
8910 sreloc
= elf_section_data (input_section
)->sreloc
;
8912 sreloc
= htab
->reliplt
;
8917 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8920 if (outrel
.r_offset
== (bfd_vma
) -1
8921 || outrel
.r_offset
== (bfd_vma
) -2)
8922 skip
= (int) outrel
.r_offset
;
8923 outrel
.r_offset
+= (input_section
->output_section
->vma
8924 + input_section
->output_offset
);
8927 memset (&outrel
, 0, sizeof outrel
);
8929 && (h
->root
.type
== bfd_link_hash_undefined
8930 || h
->root
.type
== bfd_link_hash_undefweak
))
8931 || !SYMBOL_REFERENCES_LOCAL (info
, h
))
8933 BFD_ASSERT (h
->dynindx
!= -1);
8934 unresolved_reloc
= FALSE
;
8935 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
8936 outrel
.r_addend
= rel
->r_addend
;
8940 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8942 if (r_type
!= R_PPC_ADDR32
)
8948 /* If we get here when building a static
8949 executable, then the libc startup function
8950 responsible for applying indirect function
8951 relocations is going to complain about
8953 If we get here when building a dynamic
8954 executable, it will be because we have
8955 a text relocation. The dynamic loader
8956 will set the text segment writable and
8957 non-executable to apply text relocations.
8958 So we'll segfault when trying to run the
8959 indirection function to resolve the reloc. */
8960 info
->callbacks
->einfo
8961 /* xgettext:c-format */
8962 (_("%P: %H: relocation %s for indirect "
8963 "function %s unsupported\n"),
8964 input_bfd
, input_section
, rel
->r_offset
,
8969 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8971 else if (sec
== NULL
|| sec
->owner
== NULL
)
8973 bfd_set_error (bfd_error_bad_value
);
8980 /* We are turning this relocation into one
8981 against a section symbol. It would be
8982 proper to subtract the symbol's value,
8983 osec->vma, from the emitted reloc addend,
8984 but ld.so expects buggy relocs.
8985 FIXME: Why not always use a zero index? */
8986 osec
= sec
->output_section
;
8987 indx
= elf_section_data (osec
)->dynindx
;
8990 osec
= htab
->elf
.text_index_section
;
8991 indx
= elf_section_data (osec
)->dynindx
;
8993 BFD_ASSERT (indx
!= 0);
8996 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8997 indx
, osec
->name
, osec
->flags
,
8998 h
->root
.root
.string
);
9002 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
9004 else if (ifunc
!= NULL
)
9005 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
9007 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
9010 loc
= sreloc
->contents
;
9011 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
9012 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
9017 /* This reloc will be computed at runtime. We clear the memory
9018 so that it contains predictable value. */
9020 && ((input_section
->flags
& SEC_ALLOC
) != 0
9021 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
9023 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
9030 case R_PPC_RELAX_PLT
:
9031 case R_PPC_RELAX_PLTREL24
:
9034 struct plt_entry
*ent
;
9035 bfd_vma got2_addend
= 0;
9037 if (r_type
== R_PPC_RELAX_PLTREL24
)
9039 if (bfd_link_pic (info
))
9040 got2_addend
= addend
;
9043 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
9044 if (htab
->plt_type
== PLT_NEW
)
9045 relocation
= (htab
->glink
->output_section
->vma
9046 + htab
->glink
->output_offset
9047 + ent
->glink_offset
);
9049 relocation
= (htab
->plt
->output_section
->vma
9050 + htab
->plt
->output_offset
9059 size_t insn_offset
= rel
->r_offset
;
9062 if (bfd_link_pic (info
))
9064 relocation
-= (input_section
->output_section
->vma
9065 + input_section
->output_offset
9066 + rel
->r_offset
- 4);
9067 stub
= shared_stub_entry
;
9068 bfd_put_32 (input_bfd
, stub
[0], contents
+ insn_offset
- 12);
9069 bfd_put_32 (input_bfd
, stub
[1], contents
+ insn_offset
- 8);
9070 bfd_put_32 (input_bfd
, stub
[2], contents
+ insn_offset
- 4);
9072 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
9077 size
= ARRAY_SIZE (stub_entry
);
9080 relocation
+= addend
;
9081 if (bfd_link_relocatable (info
))
9084 /* First insn is HA, second is LO. */
9086 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
9087 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
9091 insn
|= relocation
& 0xffff;
9092 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
9100 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
9104 /* Rewrite the reloc and convert one of the trailing nop
9105 relocs to describe this relocation. */
9106 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
9107 /* The relocs are at the bottom 2 bytes */
9108 wrel
->r_offset
= rel
->r_offset
+ d_offset
;
9109 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
9110 wrel
->r_addend
= rel
->r_addend
;
9111 memmove (wrel
+ 1, wrel
, (relend
- wrel
- 1) * sizeof (*wrel
));
9113 wrel
->r_offset
+= 4;
9114 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
9118 /* Indirect .sdata relocation. */
9119 case R_PPC_EMB_SDAI16
:
9120 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
9121 if (!is_static_defined (htab
->sdata
[0].sym
))
9123 unresolved_reloc
= TRUE
;
9127 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
9128 h
, relocation
, rel
);
9132 /* Indirect .sdata2 relocation. */
9133 case R_PPC_EMB_SDA2I16
:
9134 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
9135 if (!is_static_defined (htab
->sdata
[1].sym
))
9137 unresolved_reloc
= TRUE
;
9141 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
9142 h
, relocation
, rel
);
9146 /* Handle the TOC16 reloc. We want to use the offset within the .got
9147 section, not the actual VMA. This is appropriate when generating
9148 an embedded ELF object, for which the .got section acts like the
9149 AIX .toc section. */
9150 case R_PPC_TOC16
: /* phony GOT16 relocations */
9151 if (sec
== NULL
|| sec
->output_section
== NULL
)
9153 unresolved_reloc
= TRUE
;
9156 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
9158 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
9161 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
9164 case R_PPC_PLTREL24
:
9165 if (h
!= NULL
&& ifunc
== NULL
)
9167 struct plt_entry
*ent
;
9169 ent
= find_plt_ent (&h
->plt
.plist
, got2
,
9170 bfd_link_pic (info
) ? addend
: 0);
9172 || htab
->plt
== NULL
)
9174 /* We didn't make a PLT entry for this symbol. This
9175 happens when statically linking PIC code, or when
9176 using -Bsymbolic. */
9180 /* Relocation is to the entry for this symbol in the
9181 procedure linkage table. */
9182 unresolved_reloc
= FALSE
;
9183 if (htab
->plt_type
== PLT_NEW
)
9184 relocation
= (htab
->glink
->output_section
->vma
9185 + htab
->glink
->output_offset
9186 + ent
->glink_offset
);
9188 relocation
= (htab
->plt
->output_section
->vma
9189 + htab
->plt
->output_offset
9194 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9195 addend specifies the GOT pointer offset within .got2.
9196 Don't apply it to the relocation field. */
9200 /* Relocate against _SDA_BASE_. */
9201 case R_PPC_SDAREL16
:
9204 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
9207 || sec
->output_section
== NULL
9208 || !is_static_defined (sda
))
9210 unresolved_reloc
= TRUE
;
9213 addend
-= SYM_VAL (sda
);
9215 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9216 if (!(strcmp (name
, ".sdata") == 0
9217 || strcmp (name
, ".sbss") == 0))
9219 info
->callbacks
->einfo
9220 /* xgettext:c-format */
9221 (_("%P: %B: the target (%s) of a %s relocation is "
9222 "in the wrong output section (%s)\n"),
9231 /* Relocate against _SDA2_BASE_. */
9232 case R_PPC_EMB_SDA2REL
:
9235 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
9238 || sec
->output_section
== NULL
9239 || !is_static_defined (sda
))
9241 unresolved_reloc
= TRUE
;
9244 addend
-= SYM_VAL (sda
);
9246 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9247 if (!(strcmp (name
, ".sdata2") == 0
9248 || strcmp (name
, ".sbss2") == 0))
9250 info
->callbacks
->einfo
9251 /* xgettext:c-format */
9252 (_("%P: %B: the target (%s) of a %s relocation is "
9253 "in the wrong output section (%s)\n"),
9262 case R_PPC_VLE_LO16A
:
9263 relocation
= relocation
+ addend
;
9264 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9265 contents
+ rel
->r_offset
, relocation
,
9266 split16a_type
, htab
->params
->vle_reloc_fixup
);
9269 case R_PPC_VLE_LO16D
:
9270 relocation
= relocation
+ addend
;
9271 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9272 contents
+ rel
->r_offset
, relocation
,
9273 split16d_type
, htab
->params
->vle_reloc_fixup
);
9276 case R_PPC_VLE_HI16A
:
9277 relocation
= (relocation
+ addend
) >> 16;
9278 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9279 contents
+ rel
->r_offset
, relocation
,
9280 split16a_type
, htab
->params
->vle_reloc_fixup
);
9283 case R_PPC_VLE_HI16D
:
9284 relocation
= (relocation
+ addend
) >> 16;
9285 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9286 contents
+ rel
->r_offset
, relocation
,
9287 split16d_type
, htab
->params
->vle_reloc_fixup
);
9290 case R_PPC_VLE_HA16A
:
9291 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9292 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9293 contents
+ rel
->r_offset
, relocation
,
9294 split16a_type
, htab
->params
->vle_reloc_fixup
);
9297 case R_PPC_VLE_HA16D
:
9298 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9299 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9300 contents
+ rel
->r_offset
, relocation
,
9301 split16d_type
, htab
->params
->vle_reloc_fixup
);
9304 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9305 case R_PPC_EMB_SDA21
:
9306 case R_PPC_VLE_SDA21
:
9307 case R_PPC_EMB_RELSDA
:
9308 case R_PPC_VLE_SDA21_LO
:
9313 struct elf_link_hash_entry
*sda
= NULL
;
9315 if (sec
== NULL
|| sec
->output_section
== NULL
)
9317 unresolved_reloc
= TRUE
;
9321 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9322 if (strcmp (name
, ".sdata") == 0
9323 || strcmp (name
, ".sbss") == 0)
9326 sda
= htab
->sdata
[0].sym
;
9328 else if (strcmp (name
, ".sdata2") == 0
9329 || strcmp (name
, ".sbss2") == 0)
9332 sda
= htab
->sdata
[1].sym
;
9334 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
9335 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
9341 info
->callbacks
->einfo
9342 /* xgettext:c-format */
9343 (_("%P: %B: the target (%s) of a %s relocation is "
9344 "in the wrong output section (%s)\n"),
9350 bfd_set_error (bfd_error_bad_value
);
9357 if (!is_static_defined (sda
))
9359 unresolved_reloc
= TRUE
;
9362 addend
-= SYM_VAL (sda
);
9365 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9367 && (r_type
== R_PPC_VLE_SDA21
9368 || r_type
== R_PPC_VLE_SDA21_LO
))
9370 relocation
= relocation
+ addend
;
9373 /* Force e_li insn, keeping RT from original insn. */
9377 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9378 /* Top 4 bits of value to 17..20. */
9379 insn
|= (relocation
& 0xf0000) >> 5;
9380 /* Next 5 bits of the value to 11..15. */
9381 insn
|= (relocation
& 0xf800) << 5;
9382 /* And the final 11 bits of the value to bits 21 to 31. */
9383 insn
|= relocation
& 0x7ff;
9385 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9387 if (r_type
== R_PPC_VLE_SDA21
9388 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
9392 else if (r_type
== R_PPC_EMB_SDA21
9393 || r_type
== R_PPC_VLE_SDA21
9394 || r_type
== R_PPC_VLE_SDA21_LO
)
9396 /* Fill in register field. */
9397 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
9399 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9403 case R_PPC_VLE_SDAREL_LO16A
:
9404 case R_PPC_VLE_SDAREL_LO16D
:
9405 case R_PPC_VLE_SDAREL_HI16A
:
9406 case R_PPC_VLE_SDAREL_HI16D
:
9407 case R_PPC_VLE_SDAREL_HA16A
:
9408 case R_PPC_VLE_SDAREL_HA16D
:
9413 struct elf_link_hash_entry
*sda
= NULL
;
9415 if (sec
== NULL
|| sec
->output_section
== NULL
)
9417 unresolved_reloc
= TRUE
;
9421 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9422 if (strcmp (name
, ".sdata") == 0
9423 || strcmp (name
, ".sbss") == 0)
9426 sda
= htab
->sdata
[0].sym
;
9428 else if (strcmp (name
, ".sdata2") == 0
9429 || strcmp (name
, ".sbss2") == 0)
9432 sda
= htab
->sdata
[1].sym
;
9437 /* xgettext:c-format */
9438 (_("%B: the target (%s) of a %s relocation is "
9439 "in the wrong output section (%s)"),
9445 bfd_set_error (bfd_error_bad_value
);
9452 if (!is_static_defined (sda
))
9454 unresolved_reloc
= TRUE
;
9459 value
= (sda
->root
.u
.def
.section
->output_section
->vma
9460 + sda
->root
.u
.def
.section
->output_offset
9463 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
9464 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9465 contents
+ rel
->r_offset
, value
,
9467 htab
->params
->vle_reloc_fixup
);
9468 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
9469 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9470 contents
+ rel
->r_offset
, value
,
9472 htab
->params
->vle_reloc_fixup
);
9473 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
9475 value
= value
>> 16;
9476 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9477 contents
+ rel
->r_offset
, value
,
9479 htab
->params
->vle_reloc_fixup
);
9481 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
9483 value
= value
>> 16;
9484 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9485 contents
+ rel
->r_offset
, value
,
9487 htab
->params
->vle_reloc_fixup
);
9489 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
9491 value
= (value
+ 0x8000) >> 16;
9492 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9493 contents
+ rel
->r_offset
, value
,
9495 htab
->params
->vle_reloc_fixup
);
9497 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
9499 value
= (value
+ 0x8000) >> 16;
9500 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9501 contents
+ rel
->r_offset
, value
,
9503 htab
->params
->vle_reloc_fixup
);
9508 /* Relocate against the beginning of the section. */
9510 case R_PPC_SECTOFF_LO
:
9511 case R_PPC_SECTOFF_HI
:
9512 case R_PPC_SECTOFF_HA
:
9513 if (sec
== NULL
|| sec
->output_section
== NULL
)
9515 unresolved_reloc
= TRUE
;
9518 addend
-= sec
->output_section
->vma
;
9521 /* Negative relocations. */
9522 case R_PPC_EMB_NADDR32
:
9523 case R_PPC_EMB_NADDR16
:
9524 case R_PPC_EMB_NADDR16_LO
:
9525 case R_PPC_EMB_NADDR16_HI
:
9526 case R_PPC_EMB_NADDR16_HA
:
9527 addend
-= 2 * relocation
;
9531 case R_PPC_GLOB_DAT
:
9532 case R_PPC_JMP_SLOT
:
9533 case R_PPC_RELATIVE
:
9534 case R_PPC_IRELATIVE
:
9536 case R_PPC_PLTREL32
:
9537 case R_PPC_PLT16_LO
:
9538 case R_PPC_PLT16_HI
:
9539 case R_PPC_PLT16_HA
:
9541 case R_PPC_EMB_RELSEC16
:
9542 case R_PPC_EMB_RELST_LO
:
9543 case R_PPC_EMB_RELST_HI
:
9544 case R_PPC_EMB_RELST_HA
:
9545 case R_PPC_EMB_BIT_FLD
:
9546 info
->callbacks
->einfo
9547 /* xgettext:c-format */
9548 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9553 bfd_set_error (bfd_error_invalid_operation
);
9558 /* Do any further special processing. */
9564 case R_PPC_ADDR16_HA
:
9565 case R_PPC_REL16_HA
:
9566 case R_PPC_REL16DX_HA
:
9567 case R_PPC_SECTOFF_HA
:
9568 case R_PPC_TPREL16_HA
:
9569 case R_PPC_DTPREL16_HA
:
9570 case R_PPC_EMB_NADDR16_HA
:
9571 case R_PPC_EMB_RELST_HA
:
9572 /* It's just possible that this symbol is a weak symbol
9573 that's not actually defined anywhere. In that case,
9574 'sec' would be NULL, and we should leave the symbol
9575 alone (it will be set to zero elsewhere in the link). */
9580 case R_PPC_PLT16_HA
:
9581 case R_PPC_GOT16_HA
:
9582 case R_PPC_GOT_TLSGD16_HA
:
9583 case R_PPC_GOT_TLSLD16_HA
:
9584 case R_PPC_GOT_TPREL16_HA
:
9585 case R_PPC_GOT_DTPREL16_HA
:
9586 /* Add 0x10000 if sign bit in 0:15 is set.
9587 Bits 0:15 are not used. */
9592 case R_PPC_ADDR16_LO
:
9594 case R_PPC_GOT16_LO
:
9595 case R_PPC_SDAREL16
:
9597 case R_PPC_SECTOFF_LO
:
9598 case R_PPC_DTPREL16
:
9599 case R_PPC_DTPREL16_LO
:
9601 case R_PPC_TPREL16_LO
:
9602 case R_PPC_GOT_TLSGD16
:
9603 case R_PPC_GOT_TLSGD16_LO
:
9604 case R_PPC_GOT_TLSLD16
:
9605 case R_PPC_GOT_TLSLD16_LO
:
9606 case R_PPC_GOT_DTPREL16
:
9607 case R_PPC_GOT_DTPREL16_LO
:
9608 case R_PPC_GOT_TPREL16
:
9609 case R_PPC_GOT_TPREL16_LO
:
9611 /* The 32-bit ABI lacks proper relocations to deal with
9612 certain 64-bit instructions. Prevent damage to bits
9613 that make up part of the insn opcode. */
9614 unsigned int insn
, mask
, lobit
;
9616 insn
= bfd_get_32 (input_bfd
,
9617 contents
+ rel
->r_offset
- d_offset
);
9619 if (is_insn_ds_form (insn
))
9621 else if (is_insn_dq_form (insn
))
9625 relocation
+= addend
;
9626 addend
= insn
& mask
;
9627 lobit
= mask
& relocation
;
9630 relocation
^= lobit
;
9631 info
->callbacks
->einfo
9632 /* xgettext:c-format */
9633 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9634 input_bfd
, input_section
, rel
->r_offset
,
9635 howto
->name
, sym_name
, mask
+ 1);
9636 bfd_set_error (bfd_error_bad_value
);
9644 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9645 "offset = %ld, addend = %ld\n",
9650 (long) rel
->r_offset
,
9654 if (unresolved_reloc
9655 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9657 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9658 rel
->r_offset
) != (bfd_vma
) -1)
9660 info
->callbacks
->einfo
9661 /* xgettext:c-format */
9662 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9663 input_bfd
, input_section
, rel
->r_offset
,
9669 /* 16-bit fields in insns mostly have signed values, but a
9670 few insns have 16-bit unsigned values. Really, we should
9671 have different reloc types. */
9672 if (howto
->complain_on_overflow
!= complain_overflow_dont
9673 && howto
->dst_mask
== 0xffff
9674 && (input_section
->flags
& SEC_CODE
) != 0)
9676 enum complain_overflow complain
= complain_overflow_signed
;
9678 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9682 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9683 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9684 complain
= complain_overflow_bitfield
;
9685 else if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9686 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9687 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
9688 complain
= complain_overflow_unsigned
;
9690 if (howto
->complain_on_overflow
!= complain
)
9693 alt_howto
.complain_on_overflow
= complain
;
9698 if (r_type
== R_PPC_REL16DX_HA
)
9700 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9701 if (rel
->r_offset
+ 4 > input_section
->size
)
9702 r
= bfd_reloc_outofrange
;
9707 relocation
+= addend
;
9708 relocation
-= (rel
->r_offset
9709 + input_section
->output_offset
9710 + input_section
->output_section
->vma
);
9712 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9714 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
9715 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9720 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9721 rel
->r_offset
, relocation
, addend
);
9723 if (r
!= bfd_reloc_ok
)
9725 if (r
== bfd_reloc_overflow
)
9728 /* On code like "if (foo) foo();" don't report overflow
9729 on a branch to zero when foo is undefined. */
9732 && (h
->root
.type
== bfd_link_hash_undefweak
9733 || h
->root
.type
== bfd_link_hash_undefined
)
9734 && is_branch_reloc (r_type
)))
9735 info
->callbacks
->reloc_overflow
9736 (info
, (h
? &h
->root
: NULL
), sym_name
, howto
->name
,
9737 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
);
9741 info
->callbacks
->einfo
9742 /* xgettext:c-format */
9743 (_("%P: %H: %s reloc against `%s': error %d\n"),
9744 input_bfd
, input_section
, rel
->r_offset
,
9745 howto
->name
, sym_name
, (int) r
);
9756 Elf_Internal_Shdr
*rel_hdr
;
9757 size_t deleted
= rel
- wrel
;
9759 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
9760 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9761 if (rel_hdr
->sh_size
== 0)
9763 /* It is too late to remove an empty reloc section. Leave
9765 ??? What is wrong with an empty section??? */
9766 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
9771 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
9772 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9773 input_section
->reloc_count
-= deleted
;
9777 fprintf (stderr
, "\n");
9780 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9781 && input_section
->size
!= input_section
->rawsize
9782 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9783 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9785 /* Branch around the trampolines. */
9786 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9787 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9790 if (htab
->params
->ppc476_workaround
9791 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9792 && (!bfd_link_relocatable (info
)
9793 || (input_section
->output_section
->alignment_power
9794 >= htab
->params
->pagesize_p2
)))
9796 bfd_vma start_addr
, end_addr
, addr
;
9797 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9799 if (relax_info
->workaround_size
!= 0)
9805 bfd_put_32 (input_bfd
, BA
, fill
);
9806 p
= contents
+ input_section
->size
- relax_info
->workaround_size
;
9807 n
= relax_info
->workaround_size
>> 2;
9810 memcpy (p
, fill
, 4);
9815 /* The idea is: Replace the last instruction on a page with a
9816 branch to a patch area. Put the insn there followed by a
9817 branch back to the next page. Complicated a little by
9818 needing to handle moved conditional branches, and by not
9819 wanting to touch data-in-text. */
9821 start_addr
= (input_section
->output_section
->vma
9822 + input_section
->output_offset
);
9823 end_addr
= (start_addr
+ input_section
->size
9824 - relax_info
->workaround_size
);
9825 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9829 bfd_vma offset
= addr
- start_addr
;
9830 Elf_Internal_Rela
*lo
, *hi
;
9831 bfd_boolean is_data
;
9832 bfd_vma patch_off
, patch_addr
;
9835 /* Do we have a data reloc at this offset? If so, leave
9843 rel
= lo
+ (hi
- lo
) / 2;
9844 if (rel
->r_offset
< offset
)
9846 else if (rel
->r_offset
> offset
+ 3)
9850 switch (ELF32_R_TYPE (rel
->r_info
))
9867 /* Some instructions can be left alone too. Unconditional
9868 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9869 avoid the icache failure.
9871 The problem occurs due to prefetch across a page boundary
9872 where stale instructions can be fetched from the next
9873 page, and the mechanism for flushing these bad
9874 instructions fails under certain circumstances. The
9875 unconditional branches:
9876 1) Branch: b, bl, ba, bla,
9877 2) Branch Conditional: bc, bca, bcl, bcla,
9878 3) Branch Conditional to Link Register: bclr, bclrl,
9879 where (2) and (3) have BO=0x14 making them unconditional,
9880 prevent the bad prefetch because the prefetch itself is
9881 affected by these instructions. This happens even if the
9882 instruction is not executed.
9887 . addi 9,9,new_page@l
9894 The bctr is not predicted taken due to ctr not being
9895 ready, so prefetch continues on past the bctr into the
9896 new page which might have stale instructions. If they
9897 fail to be flushed, then they will be executed after the
9898 bctr executes. Either of the following modifications
9899 prevent the bad prefetch from happening in the first
9902 . lis 9,new_page@ha lis 9,new_page@ha
9903 . addi 9,9,new_page@l addi 9,9,new_page@l
9906 . nop b somewhere_else
9907 . b somewhere_else nop
9908 . new_page: new_page:
9910 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9911 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9912 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9913 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9914 || ((insn
& (0x3f << 26)) == (19u << 26)
9915 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9916 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9919 patch_addr
= (start_addr
+ input_section
->size
9920 - relax_info
->workaround_size
);
9921 patch_addr
= (patch_addr
+ 15) & -16;
9922 patch_off
= patch_addr
- start_addr
;
9923 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9926 && rel
->r_offset
>= offset
9927 && rel
->r_offset
< offset
+ 4)
9931 /* If the insn we are patching had a reloc, adjust the
9932 reloc r_offset so that the reloc applies to the moved
9933 location. This matters for -r and --emit-relocs. */
9934 if (rel
+ 1 != relend
)
9936 Elf_Internal_Rela tmp
= *rel
;
9938 /* Keep the relocs sorted by r_offset. */
9939 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9942 relend
[-1].r_offset
+= patch_off
- offset
;
9944 /* Adjust REL16 addends too. */
9945 switch (ELF32_R_TYPE (relend
[-1].r_info
))
9948 case R_PPC_REL16_LO
:
9949 case R_PPC_REL16_HI
:
9950 case R_PPC_REL16_HA
:
9951 relend
[-1].r_addend
+= patch_off
- offset
;
9957 /* If we are building a PIE or shared library with
9958 non-PIC objects, perhaps we had a dynamic reloc too?
9959 If so, the dynamic reloc must move with the insn. */
9960 sreloc
= elf_section_data (input_section
)->sreloc
;
9963 Elf32_External_Rela
*slo
, *shi
, *srelend
;
9966 slo
= (Elf32_External_Rela
*) sreloc
->contents
;
9967 shi
= srelend
= slo
+ sreloc
->reloc_count
;
9968 soffset
= (offset
+ input_section
->output_section
->vma
9969 + input_section
->output_offset
);
9972 Elf32_External_Rela
*srel
= slo
+ (shi
- slo
) / 2;
9973 bfd_elf32_swap_reloca_in (output_bfd
, (bfd_byte
*) srel
,
9975 if (outrel
.r_offset
< soffset
)
9977 else if (outrel
.r_offset
> soffset
+ 3)
9981 if (srel
+ 1 != srelend
)
9983 memmove (srel
, srel
+ 1,
9984 (srelend
- (srel
+ 1)) * sizeof (*srel
));
9987 outrel
.r_offset
+= patch_off
- offset
;
9988 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
9998 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9999 && (insn
& 2) == 0 /* relative */)
10001 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
10003 delta
+= offset
- patch_off
;
10004 if (bfd_link_relocatable (info
) && rel
!= NULL
)
10006 if (!bfd_link_relocatable (info
) && rel
!= NULL
)
10008 enum elf_ppc_reloc_type r_type
;
10010 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
10011 if (r_type
== R_PPC_REL14_BRTAKEN
)
10012 insn
|= BRANCH_PREDICT_BIT
;
10013 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
10014 insn
&= ~BRANCH_PREDICT_BIT
;
10016 BFD_ASSERT (r_type
== R_PPC_REL14
);
10018 if ((r_type
== R_PPC_REL14_BRTAKEN
10019 || r_type
== R_PPC_REL14_BRNTAKEN
)
10020 && delta
+ 0x8000 < 0x10000
10021 && (bfd_signed_vma
) delta
< 0)
10022 insn
^= BRANCH_PREDICT_BIT
;
10024 if (delta
+ 0x8000 < 0x10000)
10026 bfd_put_32 (input_bfd
,
10027 (insn
& ~0xfffc) | (delta
& 0xfffc),
10028 contents
+ patch_off
);
10030 bfd_put_32 (input_bfd
,
10031 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
10032 contents
+ patch_off
);
10039 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
10041 relend
[-1].r_offset
+= 8;
10042 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
10044 bfd_put_32 (input_bfd
,
10045 (insn
& ~0xfffc) | 8,
10046 contents
+ patch_off
);
10048 bfd_put_32 (input_bfd
,
10049 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
10050 contents
+ patch_off
);
10052 bfd_put_32 (input_bfd
,
10053 B
| ((delta
- 8) & 0x3fffffc),
10054 contents
+ patch_off
);
10060 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
10062 bfd_put_32 (input_bfd
,
10063 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
10064 contents
+ patch_off
);
10067 BFD_ASSERT (patch_off
<= input_section
->size
);
10068 relax_info
->workaround_size
= input_section
->size
- patch_off
;
10075 /* Finish up dynamic symbol handling. We set the contents of various
10076 dynamic sections here. */
10079 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
10080 struct bfd_link_info
*info
,
10081 struct elf_link_hash_entry
*h
,
10082 Elf_Internal_Sym
*sym
)
10084 struct ppc_elf_link_hash_table
*htab
;
10085 struct plt_entry
*ent
;
10086 bfd_boolean doneone
;
10089 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
10090 h
->root
.root
.string
);
10093 htab
= ppc_elf_hash_table (info
);
10094 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
10097 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10098 if (ent
->plt
.offset
!= (bfd_vma
) -1)
10102 Elf_Internal_Rela rela
;
10104 bfd_vma reloc_index
;
10106 if (htab
->plt_type
== PLT_NEW
10107 || !htab
->elf
.dynamic_sections_created
10108 || h
->dynindx
== -1)
10109 reloc_index
= ent
->plt
.offset
/ 4;
10112 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
10113 / htab
->plt_slot_size
);
10114 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
10115 && htab
->plt_type
== PLT_OLD
)
10116 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
10119 /* This symbol has an entry in the procedure linkage table.
10121 if (htab
->plt_type
== PLT_VXWORKS
10122 && htab
->elf
.dynamic_sections_created
10123 && h
->dynindx
!= -1)
10125 bfd_vma got_offset
;
10126 const bfd_vma
*plt_entry
;
10128 /* The first three entries in .got.plt are reserved. */
10129 got_offset
= (reloc_index
+ 3) * 4;
10131 /* Use the right PLT. */
10132 plt_entry
= bfd_link_pic (info
) ? ppc_elf_vxworks_pic_plt_entry
10133 : ppc_elf_vxworks_plt_entry
;
10135 /* Fill in the .plt on VxWorks. */
10136 if (bfd_link_pic (info
))
10138 bfd_put_32 (output_bfd
,
10139 plt_entry
[0] | PPC_HA (got_offset
),
10140 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
10141 bfd_put_32 (output_bfd
,
10142 plt_entry
[1] | PPC_LO (got_offset
),
10143 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
10147 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
10149 bfd_put_32 (output_bfd
,
10150 plt_entry
[0] | PPC_HA (got_loc
),
10151 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
10152 bfd_put_32 (output_bfd
,
10153 plt_entry
[1] | PPC_LO (got_loc
),
10154 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
10157 bfd_put_32 (output_bfd
, plt_entry
[2],
10158 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
10159 bfd_put_32 (output_bfd
, plt_entry
[3],
10160 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
10162 /* This instruction is an immediate load. The value loaded is
10163 the byte offset of the R_PPC_JMP_SLOT relocation from the
10164 start of the .rela.plt section. The value is stored in the
10165 low-order 16 bits of the load instruction. */
10166 /* NOTE: It appears that this is now an index rather than a
10167 prescaled offset. */
10168 bfd_put_32 (output_bfd
,
10169 plt_entry
[4] | reloc_index
,
10170 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
10171 /* This instruction is a PC-relative branch whose target is
10172 the start of the PLT section. The address of this branch
10173 instruction is 20 bytes beyond the start of this PLT entry.
10174 The address is encoded in bits 6-29, inclusive. The value
10175 stored is right-shifted by two bits, permitting a 26-bit
10177 bfd_put_32 (output_bfd
,
10179 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
10180 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
10181 bfd_put_32 (output_bfd
, plt_entry
[6],
10182 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
10183 bfd_put_32 (output_bfd
, plt_entry
[7],
10184 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
10186 /* Fill in the GOT entry corresponding to this PLT slot with
10187 the address immediately after the "bctr" instruction
10188 in this PLT entry. */
10189 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
10190 + htab
->plt
->output_offset
10191 + ent
->plt
.offset
+ 16),
10192 htab
->sgotplt
->contents
+ got_offset
);
10194 if (!bfd_link_pic (info
))
10196 /* Fill in a couple of entries in .rela.plt.unloaded. */
10197 loc
= htab
->srelplt2
->contents
10198 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
10199 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
10200 * sizeof (Elf32_External_Rela
));
10202 /* Provide the @ha relocation for the first instruction. */
10203 rela
.r_offset
= (htab
->plt
->output_section
->vma
10204 + htab
->plt
->output_offset
10205 + ent
->plt
.offset
+ 2);
10206 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10208 rela
.r_addend
= got_offset
;
10209 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10210 loc
+= sizeof (Elf32_External_Rela
);
10212 /* Provide the @l relocation for the second instruction. */
10213 rela
.r_offset
= (htab
->plt
->output_section
->vma
10214 + htab
->plt
->output_offset
10215 + ent
->plt
.offset
+ 6);
10216 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10218 rela
.r_addend
= got_offset
;
10219 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10220 loc
+= sizeof (Elf32_External_Rela
);
10222 /* Provide a relocation for the GOT entry corresponding to this
10223 PLT slot. Point it at the middle of the .plt entry. */
10224 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
10225 + htab
->sgotplt
->output_offset
10227 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
10229 rela
.r_addend
= ent
->plt
.offset
+ 16;
10230 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10233 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10234 In particular, the offset for the relocation is not the
10235 address of the PLT entry for this function, as specified
10236 by the ABI. Instead, the offset is set to the address of
10237 the GOT slot for this function. See EABI 4.4.4.1. */
10238 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
10239 + htab
->sgotplt
->output_offset
10245 asection
*splt
= htab
->plt
;
10246 if (!htab
->elf
.dynamic_sections_created
10247 || h
->dynindx
== -1)
10250 rela
.r_offset
= (splt
->output_section
->vma
10251 + splt
->output_offset
10252 + ent
->plt
.offset
);
10253 if (htab
->plt_type
== PLT_OLD
10254 || !htab
->elf
.dynamic_sections_created
10255 || h
->dynindx
== -1)
10257 /* We don't need to fill in the .plt. The ppc dynamic
10258 linker will fill it in. */
10262 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
10263 + htab
->glink
->output_section
->vma
10264 + htab
->glink
->output_offset
);
10265 bfd_put_32 (output_bfd
, val
,
10266 splt
->contents
+ ent
->plt
.offset
);
10270 /* Fill in the entry in the .rela.plt section. */
10272 if (!htab
->elf
.dynamic_sections_created
10273 || h
->dynindx
== -1)
10275 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
10277 && (h
->root
.type
== bfd_link_hash_defined
10278 || h
->root
.type
== bfd_link_hash_defweak
));
10279 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
10280 rela
.r_addend
= SYM_VAL (h
);
10283 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
10285 if (!htab
->elf
.dynamic_sections_created
10286 || h
->dynindx
== -1)
10287 loc
= (htab
->reliplt
->contents
10288 + (htab
->reliplt
->reloc_count
++
10289 * sizeof (Elf32_External_Rela
)));
10291 loc
= (htab
->relplt
->contents
10292 + reloc_index
* sizeof (Elf32_External_Rela
));
10293 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10295 if (!h
->def_regular
)
10297 /* Mark the symbol as undefined, rather than as
10298 defined in the .plt section. Leave the value if
10299 there were any relocations where pointer equality
10300 matters (this is a clue for the dynamic linker, to
10301 make function pointer comparisons work between an
10302 application and shared library), otherwise set it
10304 sym
->st_shndx
= SHN_UNDEF
;
10305 if (!h
->pointer_equality_needed
)
10307 else if (!h
->ref_regular_nonweak
)
10309 /* This breaks function pointer comparisons, but
10310 that is better than breaking tests for a NULL
10311 function pointer. */
10315 else if (h
->type
== STT_GNU_IFUNC
10316 && !bfd_link_pic (info
))
10318 /* Set the value of ifunc symbols in a non-pie
10319 executable to the glink entry. This is to avoid
10320 text relocations. We can't do this for ifunc in
10321 allocate_dynrelocs, as we do for normal dynamic
10322 function symbols with plt entries, because we need
10323 to keep the original value around for the ifunc
10325 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
10326 (output_bfd
, htab
->glink
->output_section
));
10327 sym
->st_value
= (ent
->glink_offset
10328 + htab
->glink
->output_offset
10329 + htab
->glink
->output_section
->vma
);
10334 if (htab
->plt_type
== PLT_NEW
10335 || !htab
->elf
.dynamic_sections_created
10336 || h
->dynindx
== -1)
10339 asection
*splt
= htab
->plt
;
10340 if (!htab
->elf
.dynamic_sections_created
10341 || h
->dynindx
== -1)
10344 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
10346 if (h
== htab
->tls_get_addr
&& !htab
->params
->no_tls_get_addr_opt
)
10348 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
10350 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
10352 bfd_put_32 (output_bfd
, MR_0_3
, p
);
10354 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
10356 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
10358 bfd_put_32 (output_bfd
, BEQLR
, p
);
10360 bfd_put_32 (output_bfd
, MR_3_0
, p
);
10362 bfd_put_32 (output_bfd
, NOP
, p
);
10366 write_glink_stub (ent
, splt
, p
, info
);
10368 if (!bfd_link_pic (info
))
10369 /* We only need one non-PIC glink stub. */
10379 Elf_Internal_Rela rela
;
10382 /* This symbols needs a copy reloc. Set it up. */
10385 fprintf (stderr
, ", copy");
10388 BFD_ASSERT (h
->dynindx
!= -1);
10390 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
10394 BFD_ASSERT (s
!= NULL
);
10396 rela
.r_offset
= SYM_VAL (h
);
10397 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
10399 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
10400 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10404 fprintf (stderr
, "\n");
10410 static enum elf_reloc_type_class
10411 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
10412 const asection
*rel_sec
,
10413 const Elf_Internal_Rela
*rela
)
10415 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
10417 if (rel_sec
== htab
->reliplt
)
10418 return reloc_class_ifunc
;
10420 switch (ELF32_R_TYPE (rela
->r_info
))
10422 case R_PPC_RELATIVE
:
10423 return reloc_class_relative
;
10424 case R_PPC_JMP_SLOT
:
10425 return reloc_class_plt
;
10427 return reloc_class_copy
;
10429 return reloc_class_normal
;
10433 /* Finish up the dynamic sections. */
10436 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
10437 struct bfd_link_info
*info
)
10441 struct ppc_elf_link_hash_table
*htab
;
10444 bfd_boolean ret
= TRUE
;
10447 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
10450 htab
= ppc_elf_hash_table (info
);
10451 dynobj
= elf_hash_table (info
)->dynobj
;
10452 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
10453 if (htab
->is_vxworks
)
10454 splt
= bfd_get_linker_section (dynobj
, ".plt");
10459 if (htab
->elf
.hgot
!= NULL
)
10460 got
= SYM_VAL (htab
->elf
.hgot
);
10462 if (htab
->elf
.dynamic_sections_created
)
10464 Elf32_External_Dyn
*dyncon
, *dynconend
;
10466 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
10468 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
10469 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10470 for (; dyncon
< dynconend
; dyncon
++)
10472 Elf_Internal_Dyn dyn
;
10475 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10480 if (htab
->is_vxworks
)
10484 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10488 dyn
.d_un
.d_val
= htab
->relplt
->size
;
10493 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10497 dyn
.d_un
.d_ptr
= got
;
10501 if (htab
->is_vxworks
)
10504 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
10510 if (htab
->is_vxworks
10511 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
10516 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10520 if (htab
->got
!= NULL
)
10522 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->got
10523 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->sgotplt
)
10525 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
10527 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
10528 if (htab
->plt_type
== PLT_OLD
)
10530 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10531 so that a function can easily find the address of
10532 _GLOBAL_OFFSET_TABLE_. */
10533 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
10534 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10535 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
10540 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
10541 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
10542 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10543 bfd_put_32 (output_bfd
, val
, p
);
10548 /* xgettext:c-format */
10549 info
->callbacks
->einfo (_("%P: %s not defined in linker created %s\n"),
10550 htab
->elf
.hgot
->root
.root
.string
,
10551 (htab
->sgotplt
!= NULL
10552 ? htab
->sgotplt
->name
: htab
->got
->name
));
10553 bfd_set_error (bfd_error_bad_value
);
10557 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
10560 /* Fill in the first entry in the VxWorks procedure linkage table. */
10561 if (splt
&& splt
->size
> 0)
10563 /* Use the right PLT. */
10564 const bfd_vma
*plt_entry
= (bfd_link_pic (info
)
10565 ? ppc_elf_vxworks_pic_plt0_entry
10566 : ppc_elf_vxworks_plt0_entry
);
10568 if (!bfd_link_pic (info
))
10570 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
10572 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
10573 splt
->contents
+ 0);
10574 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
10575 splt
->contents
+ 4);
10579 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
10580 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
10582 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
10583 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
10584 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
10585 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
10586 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
10587 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
10589 if (! bfd_link_pic (info
))
10591 Elf_Internal_Rela rela
;
10594 loc
= htab
->srelplt2
->contents
;
10596 /* Output the @ha relocation for the first instruction. */
10597 rela
.r_offset
= (htab
->plt
->output_section
->vma
10598 + htab
->plt
->output_offset
10600 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10602 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10603 loc
+= sizeof (Elf32_External_Rela
);
10605 /* Output the @l relocation for the second instruction. */
10606 rela
.r_offset
= (htab
->plt
->output_section
->vma
10607 + htab
->plt
->output_offset
10609 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10611 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10612 loc
+= sizeof (Elf32_External_Rela
);
10614 /* Fix up the remaining relocations. They may have the wrong
10615 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10616 in which symbols were output. */
10617 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
10619 Elf_Internal_Rela rel
;
10621 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10622 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10623 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10624 loc
+= sizeof (Elf32_External_Rela
);
10626 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10627 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10628 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10629 loc
+= sizeof (Elf32_External_Rela
);
10631 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10632 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
10633 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10634 loc
+= sizeof (Elf32_External_Rela
);
10639 if (htab
->glink
!= NULL
10640 && htab
->glink
->contents
!= NULL
10641 && htab
->elf
.dynamic_sections_created
)
10644 unsigned char *endp
;
10649 * PIC glink code is the following:
10651 * # ith PLT code stub.
10652 * addis 11,30,(plt+(i-1)*4-got)@ha
10653 * lwz 11,(plt+(i-1)*4-got)@l(11)
10657 * # A table of branches, one for each plt entry.
10658 * # The idea is that the plt call stub loads ctr and r11 with these
10659 * # addresses, so (r11 - res_0) gives the plt index * 4.
10660 * res_0: b PLTresolve
10661 * res_1: b PLTresolve
10663 * # Some number of entries towards the end can be nops
10669 * addis 11,11,(1f-res_0)@ha
10672 * 1: addi 11,11,(1b-res_0)@l
10675 * sub 11,11,12 # r11 = index * 4
10676 * addis 12,12,(got+4-1b)@ha
10677 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10678 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10681 * add 11,0,11 # r11 = index * 12 = reloc offset.
10684 static const unsigned int pic_plt_resolve
[] =
10705 * Non-PIC glink code is a little simpler.
10707 * # ith PLT code stub.
10708 * lis 11,(plt+(i-1)*4)@ha
10709 * lwz 11,(plt+(i-1)*4)@l(11)
10713 * The branch table is the same, then comes
10716 * lis 12,(got+4)@ha
10717 * addis 11,11,(-res_0)@ha
10718 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10719 * addi 11,11,(-res_0)@l # r11 = index * 4
10722 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10723 * add 11,0,11 # r11 = index * 12 = reloc offset.
10726 static const unsigned int plt_resolve
[] =
10746 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10748 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10751 /* Build the branch table, one for each plt entry (less one),
10752 and perhaps some padding. */
10753 p
= htab
->glink
->contents
;
10754 p
+= htab
->glink_pltresolve
;
10755 endp
= htab
->glink
->contents
;
10756 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10757 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10759 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10764 bfd_put_32 (output_bfd
, NOP
, p
);
10768 res0
= (htab
->glink_pltresolve
10769 + htab
->glink
->output_section
->vma
10770 + htab
->glink
->output_offset
);
10772 if (htab
->params
->ppc476_workaround
)
10774 /* Ensure that a call stub at the end of a page doesn't
10775 result in prefetch over the end of the page into the
10776 glink branch table. */
10777 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10779 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10780 + htab
->glink
->output_offset
);
10782 for (page_addr
= res0
& -pagesize
;
10783 page_addr
> glink_start
;
10784 page_addr
-= pagesize
)
10786 /* We have a plt call stub that may need fixing. */
10790 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10791 insn
= bfd_get_32 (output_bfd
, loc
);
10794 /* By alignment, we know that there must be at least
10795 one other call stub before this one. */
10796 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10798 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10800 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10805 /* Last comes the PLTresolve stub. */
10806 if (bfd_link_pic (info
))
10810 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
10812 unsigned int insn
= pic_plt_resolve
[i
];
10814 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10816 bfd_put_32 (output_bfd
, insn
, p
);
10819 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
10821 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10822 + htab
->glink
->output_section
->vma
10823 + htab
->glink
->output_offset
);
10825 bfd_put_32 (output_bfd
,
10826 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
10827 bfd_put_32 (output_bfd
,
10828 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
10829 bfd_put_32 (output_bfd
,
10830 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
10831 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10833 bfd_put_32 (output_bfd
,
10834 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10835 bfd_put_32 (output_bfd
,
10836 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
10840 bfd_put_32 (output_bfd
,
10841 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10842 bfd_put_32 (output_bfd
,
10843 LWZ_12_12
+ 4, p
+ 9*4);
10848 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
10850 unsigned int insn
= plt_resolve
[i
];
10852 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10854 bfd_put_32 (output_bfd
, insn
, p
);
10857 p
-= 4 * ARRAY_SIZE (plt_resolve
);
10859 bfd_put_32 (output_bfd
,
10860 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
10861 bfd_put_32 (output_bfd
,
10862 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
10863 bfd_put_32 (output_bfd
,
10864 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
10865 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10867 bfd_put_32 (output_bfd
,
10868 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10869 bfd_put_32 (output_bfd
,
10870 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
10874 bfd_put_32 (output_bfd
,
10875 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10876 bfd_put_32 (output_bfd
,
10877 LWZ_12_12
+ 4, p
+ 6*4);
10882 if (htab
->glink_eh_frame
!= NULL
10883 && htab
->glink_eh_frame
->contents
!= NULL
)
10885 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10888 p
+= sizeof (glink_eh_frame_cie
);
10893 /* Offset to .glink. */
10894 val
= (htab
->glink
->output_section
->vma
10895 + htab
->glink
->output_offset
);
10896 val
-= (htab
->glink_eh_frame
->output_section
->vma
10897 + htab
->glink_eh_frame
->output_offset
);
10898 val
-= p
- htab
->glink_eh_frame
->contents
;
10899 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10901 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10902 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10903 htab
->glink_eh_frame
,
10904 htab
->glink_eh_frame
->contents
))
10911 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10912 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10913 #define TARGET_BIG_SYM powerpc_elf32_vec
10914 #define TARGET_BIG_NAME "elf32-powerpc"
10915 #define ELF_ARCH bfd_arch_powerpc
10916 #define ELF_TARGET_ID PPC32_ELF_DATA
10917 #define ELF_MACHINE_CODE EM_PPC
10918 #ifdef __QNXTARGET__
10919 #define ELF_MAXPAGESIZE 0x1000
10920 #define ELF_COMMONPAGESIZE 0x1000
10922 #define ELF_MAXPAGESIZE 0x10000
10923 #define ELF_COMMONPAGESIZE 0x10000
10925 #define ELF_MINPAGESIZE 0x1000
10926 #define elf_info_to_howto ppc_elf_info_to_howto
10928 #ifdef EM_CYGNUS_POWERPC
10929 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10933 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10936 #define elf_backend_plt_not_loaded 1
10937 #define elf_backend_can_gc_sections 1
10938 #define elf_backend_can_refcount 1
10939 #define elf_backend_rela_normal 1
10940 #define elf_backend_caches_rawsize 1
10942 #define bfd_elf32_mkobject ppc_elf_mkobject
10943 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10944 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10945 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10946 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10947 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10948 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10949 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10951 #define elf_backend_object_p ppc_elf_object_p
10952 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10953 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10954 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10955 #define elf_backend_relocate_section ppc_elf_relocate_section
10956 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10957 #define elf_backend_check_relocs ppc_elf_check_relocs
10958 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10959 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10960 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10961 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10962 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10963 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10964 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10965 #define elf_backend_fake_sections ppc_elf_fake_sections
10966 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10967 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10968 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10969 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10970 #define elf_backend_write_core_note ppc_elf_write_core_note
10971 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10972 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10973 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10974 #define elf_backend_write_section ppc_elf_write_section
10975 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10976 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10977 #define elf_backend_action_discarded ppc_elf_action_discarded
10978 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10979 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10981 #include "elf32-target.h"
10983 /* FreeBSD Target */
10985 #undef TARGET_LITTLE_SYM
10986 #undef TARGET_LITTLE_NAME
10988 #undef TARGET_BIG_SYM
10989 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10990 #undef TARGET_BIG_NAME
10991 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10994 #define ELF_OSABI ELFOSABI_FREEBSD
10997 #define elf32_bed elf32_powerpc_fbsd_bed
10999 #include "elf32-target.h"
11001 /* VxWorks Target */
11003 #undef TARGET_LITTLE_SYM
11004 #undef TARGET_LITTLE_NAME
11006 #undef TARGET_BIG_SYM
11007 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
11008 #undef TARGET_BIG_NAME
11009 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
11013 /* VxWorks uses the elf default section flags for .plt. */
11014 static const struct bfd_elf_special_section
*
11015 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
11017 if (sec
->name
== NULL
)
11020 if (strcmp (sec
->name
, ".plt") == 0)
11021 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
11023 return ppc_elf_get_sec_type_attr (abfd
, sec
);
11026 /* Like ppc_elf_link_hash_table_create, but overrides
11027 appropriately for VxWorks. */
11028 static struct bfd_link_hash_table
*
11029 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
11031 struct bfd_link_hash_table
*ret
;
11033 ret
= ppc_elf_link_hash_table_create (abfd
);
11036 struct ppc_elf_link_hash_table
*htab
11037 = (struct ppc_elf_link_hash_table
*)ret
;
11038 htab
->is_vxworks
= 1;
11039 htab
->plt_type
= PLT_VXWORKS
;
11040 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
11041 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
11042 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
11047 /* Tweak magic VxWorks symbols as they are loaded. */
11049 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
11050 struct bfd_link_info
*info
,
11051 Elf_Internal_Sym
*sym
,
11052 const char **namep ATTRIBUTE_UNUSED
,
11053 flagword
*flagsp ATTRIBUTE_UNUSED
,
11057 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
11061 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
11065 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
11067 ppc_elf_final_write_processing(abfd
, linker
);
11068 elf_vxworks_final_write_processing(abfd
, linker
);
11071 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
11073 #undef elf_backend_want_plt_sym
11074 #define elf_backend_want_plt_sym 1
11075 #undef elf_backend_want_got_plt
11076 #define elf_backend_want_got_plt 1
11077 #undef elf_backend_got_symbol_offset
11078 #define elf_backend_got_symbol_offset 0
11079 #undef elf_backend_plt_not_loaded
11080 #define elf_backend_plt_not_loaded 0
11081 #undef elf_backend_plt_readonly
11082 #define elf_backend_plt_readonly 1
11083 #undef elf_backend_got_header_size
11084 #define elf_backend_got_header_size 12
11086 #undef bfd_elf32_get_synthetic_symtab
11088 #undef bfd_elf32_bfd_link_hash_table_create
11089 #define bfd_elf32_bfd_link_hash_table_create \
11090 ppc_elf_vxworks_link_hash_table_create
11091 #undef elf_backend_add_symbol_hook
11092 #define elf_backend_add_symbol_hook \
11093 ppc_elf_vxworks_add_symbol_hook
11094 #undef elf_backend_link_output_symbol_hook
11095 #define elf_backend_link_output_symbol_hook \
11096 elf_vxworks_link_output_symbol_hook
11097 #undef elf_backend_final_write_processing
11098 #define elf_backend_final_write_processing \
11099 ppc_elf_vxworks_final_write_processing
11100 #undef elf_backend_get_sec_type_attr
11101 #define elf_backend_get_sec_type_attr \
11102 ppc_elf_vxworks_get_sec_type_attr
11103 #undef elf_backend_emit_relocs
11104 #define elf_backend_emit_relocs \
11105 elf_vxworks_emit_relocs
11108 #define elf32_bed ppc_elf_vxworks_bed
11109 #undef elf_backend_post_process_headers
11111 #include "elf32-target.h"