1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2014 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 "elf-linux-psinfo.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 2, /* 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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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_addr16_ha_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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_addr16_ha_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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_addr16_ha_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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_addr16_ha_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_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 0xfe, /* 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 bfd_elf_generic_reloc
, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE
, /* partial_inplace */
1459 0x1f007ff, /* 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 bfd_elf_generic_reloc
, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE
, /* partial_inplace */
1474 0x1f07ff, /* 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 bfd_elf_generic_reloc
, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE
, /* partial_inplace */
1489 0x1f007ff, /* 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 bfd_elf_generic_reloc
, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE
, /* partial_inplace */
1504 0x1f07ff, /* 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 bfd_elf_generic_reloc
, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE
, /* partial_inplace */
1519 0x1f007ff, /* 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 bfd_elf_generic_reloc
, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE
, /* partial_inplace */
1534 0x1f07ff, /* 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 bfd_elf_generic_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 bfd_elf_generic_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 bfd_elf_generic_reloc
, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE
, /* partial_inplace */
1581 0x1f007ff, /* 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 bfd_elf_generic_reloc
, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE
, /* partial_inplace */
1596 0x1f07ff, /* 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 bfd_elf_generic_reloc
, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE
, /* partial_inplace */
1611 0x1f007ff, /* 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 bfd_elf_generic_reloc
, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE
, /* partial_inplace */
1626 0x1f07ff, /* 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 bfd_elf_generic_reloc
, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE
, /* partial_inplace */
1641 0x1f007ff, /* 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 bfd_elf_generic_reloc
, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE
, /* partial_inplace */
1656 0x1f07ff, /* 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 bfd_elf_generic_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 /* GNU extension to record C++ vtable hierarchy. */
1735 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1737 0, /* size (0 = byte, 1 = short, 2 = long) */
1739 FALSE
, /* pc_relative */
1741 complain_overflow_dont
, /* complain_on_overflow */
1742 NULL
, /* special_function */
1743 "R_PPC_GNU_VTINHERIT", /* name */
1744 FALSE
, /* partial_inplace */
1747 FALSE
), /* pcrel_offset */
1749 /* GNU extension to record C++ vtable member usage. */
1750 HOWTO (R_PPC_GNU_VTENTRY
, /* 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_VTENTRY", /* name */
1759 FALSE
, /* partial_inplace */
1762 FALSE
), /* pcrel_offset */
1764 /* Phony reloc to handle AIX style TOC entries. */
1765 HOWTO (R_PPC_TOC16
, /* type */
1767 1, /* size (0 = byte, 1 = short, 2 = long) */
1769 FALSE
, /* pc_relative */
1771 complain_overflow_signed
, /* complain_on_overflow */
1772 bfd_elf_generic_reloc
, /* special_function */
1773 "R_PPC_TOC16", /* name */
1774 FALSE
, /* partial_inplace */
1776 0xffff, /* dst_mask */
1777 FALSE
), /* pcrel_offset */
1780 /* External 32-bit PPC structure for PRPSINFO. This structure is
1781 ABI-defined, thus we choose to use char arrays here in order to
1782 avoid dealing with different types in different architectures.
1784 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1785 most non-PPC architectures use `short int'.
1787 This structure will ultimately be written in the corefile's note
1788 section, as the PRPSINFO. */
1790 struct elf_external_ppc_linux_prpsinfo32
1792 char pr_state
; /* Numeric process state. */
1793 char pr_sname
; /* Char for pr_state. */
1794 char pr_zomb
; /* Zombie. */
1795 char pr_nice
; /* Nice val. */
1796 char pr_flag
[4]; /* Flags. */
1803 char pr_fname
[16]; /* Filename of executable. */
1804 char pr_psargs
[80]; /* Initial part of arg list. */
1807 /* Helper macro to swap (properly handling endianess) things from the
1808 `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1811 Note that FROM should be a pointer, and TO should be the explicit type. */
1813 #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1816 H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1817 H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1818 H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1819 H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1820 H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1821 H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1822 H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1823 H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1824 H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1825 H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1826 H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1827 strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1828 strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1832 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1835 ppc_elf_howto_init (void)
1837 unsigned int i
, type
;
1840 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1843 type
= ppc_elf_howto_raw
[i
].type
;
1844 if (type
>= (sizeof (ppc_elf_howto_table
)
1845 / sizeof (ppc_elf_howto_table
[0])))
1847 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1851 static reloc_howto_type
*
1852 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1853 bfd_reloc_code_real_type code
)
1855 enum elf_ppc_reloc_type r
;
1857 /* Initialize howto table if not already done. */
1858 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1859 ppc_elf_howto_init ();
1866 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
1867 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
1868 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
1869 case BFD_RELOC_PPC64_ADDR16_DS
:
1870 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
1871 case BFD_RELOC_PPC64_ADDR16_LO_DS
:
1872 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
1873 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
1874 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
1875 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
1876 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
1877 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
1878 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
1879 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
1880 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
1881 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
1882 case BFD_RELOC_PPC64_GOT16_DS
:
1883 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
1884 case BFD_RELOC_PPC64_GOT16_LO_DS
:
1885 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
1886 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
1887 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
1888 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
1889 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
1890 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
1891 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
1892 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
1893 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
1894 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
1895 case BFD_RELOC_PPC64_PLT16_LO_DS
:
1896 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
1897 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
1898 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
1899 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
1900 case BFD_RELOC_PPC64_SECTOFF_DS
:
1901 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
1902 case BFD_RELOC_PPC64_SECTOFF_LO_DS
:
1903 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
1904 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
1905 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
1906 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
1907 case BFD_RELOC_PPC64_TOC16_DS
:
1908 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
1909 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
1910 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC_TLSGD
; break;
1911 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC_TLSLD
; break;
1912 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
1913 case BFD_RELOC_PPC64_TPREL16_DS
:
1914 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
1915 case BFD_RELOC_PPC64_TPREL16_LO_DS
:
1916 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
1917 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
1918 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
1919 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
1920 case BFD_RELOC_PPC64_DTPREL16_DS
:
1921 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
1922 case BFD_RELOC_PPC64_DTPREL16_LO_DS
:
1923 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
1924 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
1925 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
1926 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
1943 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
1948 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
1949 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
1950 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
1951 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
1952 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
1953 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
1954 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
1955 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
1956 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
1957 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
1958 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
1959 case BFD_RELOC_PPC_VLE_REL8
: r
= R_PPC_VLE_REL8
; break;
1960 case BFD_RELOC_PPC_VLE_REL15
: r
= R_PPC_VLE_REL15
; break;
1961 case BFD_RELOC_PPC_VLE_REL24
: r
= R_PPC_VLE_REL24
; break;
1962 case BFD_RELOC_PPC_VLE_LO16A
: r
= R_PPC_VLE_LO16A
; break;
1963 case BFD_RELOC_PPC_VLE_LO16D
: r
= R_PPC_VLE_LO16D
; break;
1964 case BFD_RELOC_PPC_VLE_HI16A
: r
= R_PPC_VLE_HI16A
; break;
1965 case BFD_RELOC_PPC_VLE_HI16D
: r
= R_PPC_VLE_HI16D
; break;
1966 case BFD_RELOC_PPC_VLE_HA16A
: r
= R_PPC_VLE_HA16A
; break;
1967 case BFD_RELOC_PPC_VLE_HA16D
: r
= R_PPC_VLE_HA16D
; break;
1968 case BFD_RELOC_PPC_VLE_SDA21
: r
= R_PPC_VLE_SDA21
; break;
1969 case BFD_RELOC_PPC_VLE_SDA21_LO
: r
= R_PPC_VLE_SDA21_LO
; break;
1970 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
1971 r
= R_PPC_VLE_SDAREL_LO16A
;
1973 case BFD_RELOC_PPC_VLE_SDAREL_LO16D
:
1974 r
= R_PPC_VLE_SDAREL_LO16D
;
1976 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
1977 r
= R_PPC_VLE_SDAREL_HI16A
;
1979 case BFD_RELOC_PPC_VLE_SDAREL_HI16D
:
1980 r
= R_PPC_VLE_SDAREL_HI16D
;
1982 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
1983 r
= R_PPC_VLE_SDAREL_HA16A
;
1985 case BFD_RELOC_PPC_VLE_SDAREL_HA16D
:
1986 r
= R_PPC_VLE_SDAREL_HA16D
;
1988 case BFD_RELOC_16_PCREL
: r
= R_PPC_REL16
; break;
1989 case BFD_RELOC_LO16_PCREL
: r
= R_PPC_REL16_LO
; break;
1990 case BFD_RELOC_HI16_PCREL
: r
= R_PPC_REL16_HI
; break;
1991 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC_REL16_HA
; break;
1992 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
1993 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
1996 return ppc_elf_howto_table
[r
];
1999 static reloc_howto_type
*
2000 ppc_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2006 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
2008 if (ppc_elf_howto_raw
[i
].name
!= NULL
2009 && strcasecmp (ppc_elf_howto_raw
[i
].name
, r_name
) == 0)
2010 return &ppc_elf_howto_raw
[i
];
2015 /* Set the howto pointer for a PowerPC ELF reloc. */
2018 ppc_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
2020 Elf_Internal_Rela
*dst
)
2022 /* Initialize howto table if not already done. */
2023 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
2024 ppc_elf_howto_init ();
2026 BFD_ASSERT (ELF32_R_TYPE (dst
->r_info
) < (unsigned int) R_PPC_max
);
2027 cache_ptr
->howto
= ppc_elf_howto_table
[ELF32_R_TYPE (dst
->r_info
)];
2029 /* Just because the above assert didn't trigger doesn't mean that
2030 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2031 if (!cache_ptr
->howto
)
2033 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2034 abfd
, ELF32_R_TYPE (dst
->r_info
));
2035 bfd_set_error (bfd_error_bad_value
);
2037 cache_ptr
->howto
= ppc_elf_howto_table
[R_PPC_NONE
];
2041 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2043 static bfd_reloc_status_type
2044 ppc_elf_addr16_ha_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
2045 arelent
*reloc_entry
,
2047 void *data ATTRIBUTE_UNUSED
,
2048 asection
*input_section
,
2050 char **error_message ATTRIBUTE_UNUSED
)
2054 if (output_bfd
!= NULL
)
2056 reloc_entry
->address
+= input_section
->output_offset
;
2057 return bfd_reloc_ok
;
2060 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
2061 return bfd_reloc_outofrange
;
2063 if (bfd_is_com_section (symbol
->section
))
2066 relocation
= symbol
->value
;
2068 relocation
+= symbol
->section
->output_section
->vma
;
2069 relocation
+= symbol
->section
->output_offset
;
2070 relocation
+= reloc_entry
->addend
;
2071 if (reloc_entry
->howto
->pc_relative
)
2072 relocation
-= reloc_entry
->address
;
2074 reloc_entry
->addend
+= (relocation
& 0x8000) << 1;
2076 return bfd_reloc_continue
;
2079 static bfd_reloc_status_type
2080 ppc_elf_unhandled_reloc (bfd
*abfd
,
2081 arelent
*reloc_entry
,
2084 asection
*input_section
,
2086 char **error_message
)
2088 /* If this is a relocatable link (output_bfd test tells us), just
2089 call the generic function. Any adjustment will be done at final
2091 if (output_bfd
!= NULL
)
2092 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2093 input_section
, output_bfd
, error_message
);
2095 if (error_message
!= NULL
)
2097 static char buf
[60];
2098 sprintf (buf
, _("generic linker can't handle %s"),
2099 reloc_entry
->howto
->name
);
2100 *error_message
= buf
;
2102 return bfd_reloc_dangerous
;
2105 /* Sections created by the linker. */
2107 typedef struct elf_linker_section
2109 /* Pointer to the bfd section. */
2113 /* Associated bss section name. */
2114 const char *bss_name
;
2115 /* Associated symbol name. */
2116 const char *sym_name
;
2117 /* Associated symbol. */
2118 struct elf_link_hash_entry
*sym
;
2119 } elf_linker_section_t
;
2121 /* Linked list of allocated pointer entries. This hangs off of the
2122 symbol lists, and provides allows us to return different pointers,
2123 based on different addend's. */
2125 typedef struct elf_linker_section_pointers
2127 /* next allocated pointer for this symbol */
2128 struct elf_linker_section_pointers
*next
;
2129 /* offset of pointer from beginning of section */
2133 /* which linker section this is */
2134 elf_linker_section_t
*lsect
;
2135 } elf_linker_section_pointers_t
;
2137 struct ppc_elf_obj_tdata
2139 struct elf_obj_tdata elf
;
2141 /* A mapping from local symbols to offsets into the various linker
2142 sections added. This is index by the symbol index. */
2143 elf_linker_section_pointers_t
**linker_section_pointers
;
2145 /* Flags used to auto-detect plt type. */
2146 unsigned int makes_plt_call
: 1;
2147 unsigned int has_rel16
: 1;
2150 #define ppc_elf_tdata(bfd) \
2151 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2153 #define elf_local_ptr_offsets(bfd) \
2154 (ppc_elf_tdata (bfd)->linker_section_pointers)
2156 #define is_ppc_elf(bfd) \
2157 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2158 && elf_object_id (bfd) == PPC32_ELF_DATA)
2160 /* Override the generic function because we store some extras. */
2163 ppc_elf_mkobject (bfd
*abfd
)
2165 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
2169 /* Fix bad default arch selected for a 32 bit input bfd when the
2170 default is 64 bit. */
2173 ppc_elf_object_p (bfd
*abfd
)
2175 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 64)
2177 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2179 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
2181 /* Relies on arch after 64 bit default being 32 bit default. */
2182 abfd
->arch_info
= abfd
->arch_info
->next
;
2183 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
2189 /* Function to set whether a module needs the -mrelocatable bit set. */
2192 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2194 BFD_ASSERT (!elf_flags_init (abfd
)
2195 || elf_elfheader (abfd
)->e_flags
== flags
);
2197 elf_elfheader (abfd
)->e_flags
= flags
;
2198 elf_flags_init (abfd
) = TRUE
;
2202 /* Support for core dump NOTE sections. */
2205 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2210 switch (note
->descsz
)
2215 case 268: /* Linux/PPC. */
2217 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2220 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
2229 /* Make a ".reg/999" section. */
2230 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2231 size
, note
->descpos
+ offset
);
2235 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2237 switch (note
->descsz
)
2242 case 128: /* Linux/PPC elf_prpsinfo. */
2243 elf_tdata (abfd
)->core
->pid
2244 = bfd_get_32 (abfd
, note
->descdata
+ 16);
2245 elf_tdata (abfd
)->core
->program
2246 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
2247 elf_tdata (abfd
)->core
->command
2248 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
2251 /* Note that for some reason, a spurious space is tacked
2252 onto the end of the args in some (at least one anyway)
2253 implementations, so strip it off if it exists. */
2256 char *command
= elf_tdata (abfd
)->core
->command
;
2257 int n
= strlen (command
);
2259 if (0 < n
&& command
[n
- 1] == ' ')
2260 command
[n
- 1] = '\0';
2267 elfcore_write_ppc_linux_prpsinfo32 (bfd
*abfd
, char *buf
, int *bufsiz
,
2268 const struct elf_internal_linux_prpsinfo
*prpsinfo
)
2270 struct elf_external_ppc_linux_prpsinfo32 data
;
2272 memset (&data
, 0, sizeof (data
));
2273 PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd
, prpsinfo
, data
);
2275 return elfcore_write_note (abfd
, buf
, bufsiz
,
2276 "CORE", NT_PRPSINFO
, &data
, sizeof (data
));
2280 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
2292 va_start (ap
, note_type
);
2293 memset (data
, 0, sizeof (data
));
2294 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
2295 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
2297 return elfcore_write_note (abfd
, buf
, bufsiz
,
2298 "CORE", note_type
, data
, sizeof (data
));
2309 va_start (ap
, note_type
);
2310 memset (data
, 0, 72);
2311 pid
= va_arg (ap
, long);
2312 bfd_put_32 (abfd
, pid
, data
+ 24);
2313 cursig
= va_arg (ap
, int);
2314 bfd_put_16 (abfd
, cursig
, data
+ 12);
2315 greg
= va_arg (ap
, const void *);
2316 memcpy (data
+ 72, greg
, 192);
2317 memset (data
+ 264, 0, 4);
2319 return elfcore_write_note (abfd
, buf
, bufsiz
,
2320 "CORE", note_type
, data
, sizeof (data
));
2326 ppc_elf_lookup_section_flags (char *flag_name
)
2329 if (!strcmp (flag_name
, "SHF_PPC_VLE"))
2335 /* Add the VLE flag if required. */
2338 ppc_elf_section_processing (bfd
*abfd
, Elf_Internal_Shdr
*shdr
)
2340 if (bfd_get_mach (abfd
) == bfd_mach_ppc_vle
2341 && (shdr
->sh_flags
& SHF_EXECINSTR
) != 0)
2342 shdr
->sh_flags
|= SHF_PPC_VLE
;
2347 /* Return address for Ith PLT stub in section PLT, for relocation REL
2348 or (bfd_vma) -1 if it should not be included. */
2351 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
2352 const asection
*plt ATTRIBUTE_UNUSED
,
2355 return rel
->address
;
2358 /* Handle a PowerPC specific section when reading an object file. This
2359 is called when bfd_section_from_shdr finds a section with an unknown
2363 ppc_elf_section_from_shdr (bfd
*abfd
,
2364 Elf_Internal_Shdr
*hdr
,
2371 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
2374 newsect
= hdr
->bfd_section
;
2375 flags
= bfd_get_section_flags (abfd
, newsect
);
2376 if (hdr
->sh_flags
& SHF_EXCLUDE
)
2377 flags
|= SEC_EXCLUDE
;
2379 if (hdr
->sh_type
== SHT_ORDERED
)
2380 flags
|= SEC_SORT_ENTRIES
;
2382 bfd_set_section_flags (abfd
, newsect
, flags
);
2386 /* Set up any other section flags and such that may be necessary. */
2389 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
2390 Elf_Internal_Shdr
*shdr
,
2393 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
2394 shdr
->sh_type
= SHT_ORDERED
;
2399 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2400 need to bump up the number of section headers. */
2403 ppc_elf_additional_program_headers (bfd
*abfd
,
2404 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2409 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2410 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2413 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2414 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2420 /* Modify the segment map for VLE executables. */
2423 ppc_elf_modify_segment_map (bfd
*abfd
,
2424 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2426 struct elf_segment_map
*m
, *n
;
2429 bfd_boolean sect0_vle
, sectj_vle
;
2431 /* At this point in the link, output sections have already been sorted by
2432 LMA and assigned to segments. All that is left to do is to ensure
2433 there is no mixing of VLE & non-VLE sections in a text segment.
2434 If we find that case, we split the segment.
2435 We maintain the original output section order. */
2437 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
2442 sect0_vle
= (elf_section_flags (m
->sections
[0]) & SHF_PPC_VLE
) != 0;
2443 for (j
= 1; j
< m
->count
; ++j
)
2445 sectj_vle
= (elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0;
2447 if (sectj_vle
!= sect0_vle
)
2453 /* sections 0..j-1 stay in this (current) segment,
2454 the remainder are put in a new segment.
2455 The scan resumes with the new segment. */
2457 /* Fix the new segment. */
2458 amt
= sizeof (struct elf_segment_map
);
2459 amt
+= (m
->count
- j
- 1) * sizeof (asection
*);
2460 n
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2464 n
->p_type
= PT_LOAD
;
2465 n
->p_flags
= PF_X
| PF_R
;
2467 n
->p_flags
|= PF_PPC_VLE
;
2468 n
->count
= m
->count
- j
;
2469 for (k
= 0; k
< n
->count
; ++k
)
2471 n
->sections
[k
] = m
->sections
[j
+k
];
2472 m
->sections
[j
+k
] = NULL
;
2477 /* Fix the current segment */
2484 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2485 .PPC.EMB.sbss0 a normal section, and not a bss section so
2486 that the linker doesn't crater when trying to make more than
2489 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
2491 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
2492 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2493 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2494 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2495 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2496 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
2497 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE
, 0 },
2498 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2499 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2500 { NULL
, 0, 0, 0, 0 }
2503 /* This is what we want for new plt/got. */
2504 static struct bfd_elf_special_section ppc_alt_plt
=
2505 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
2507 static const struct bfd_elf_special_section
*
2508 ppc_elf_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
2510 const struct bfd_elf_special_section
*ssect
;
2512 /* See if this is one of the special sections. */
2513 if (sec
->name
== NULL
)
2516 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2520 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2521 ssect
= &ppc_alt_plt
;
2525 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2528 /* Very simple linked list structure for recording apuinfo values. */
2529 typedef struct apuinfo_list
2531 struct apuinfo_list
*next
;
2532 unsigned long value
;
2536 static apuinfo_list
*head
;
2537 static bfd_boolean apuinfo_set
;
2540 apuinfo_list_init (void)
2543 apuinfo_set
= FALSE
;
2547 apuinfo_list_add (unsigned long value
)
2549 apuinfo_list
*entry
= head
;
2551 while (entry
!= NULL
)
2553 if (entry
->value
== value
)
2555 entry
= entry
->next
;
2558 entry
= bfd_malloc (sizeof (* entry
));
2562 entry
->value
= value
;
2568 apuinfo_list_length (void)
2570 apuinfo_list
*entry
;
2571 unsigned long count
;
2573 for (entry
= head
, count
= 0;
2575 entry
= entry
->next
)
2581 static inline unsigned long
2582 apuinfo_list_element (unsigned long number
)
2584 apuinfo_list
* entry
;
2588 entry
= entry
->next
)
2591 return entry
? entry
->value
: 0;
2595 apuinfo_list_finish (void)
2597 apuinfo_list
*entry
;
2599 for (entry
= head
; entry
;)
2601 apuinfo_list
*next
= entry
->next
;
2609 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2610 #define APUINFO_LABEL "APUinfo"
2612 /* Scan the input BFDs and create a linked list of
2613 the APUinfo values that will need to be emitted. */
2616 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2620 char *buffer
= NULL
;
2621 bfd_size_type largest_input_size
= 0;
2623 unsigned long length
;
2624 const char *error_message
= NULL
;
2626 if (link_info
== NULL
)
2629 apuinfo_list_init ();
2631 /* Read in the input sections contents. */
2632 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
2634 unsigned long datum
;
2636 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2640 error_message
= _("corrupt %s section in %B");
2641 length
= asec
->size
;
2646 if (largest_input_size
< asec
->size
)
2650 largest_input_size
= asec
->size
;
2651 buffer
= bfd_malloc (largest_input_size
);
2656 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2657 || (bfd_bread (buffer
, length
, ibfd
) != length
))
2659 error_message
= _("unable to read in %s section from %B");
2663 /* Verify the contents of the header. Note - we have to
2664 extract the values this way in order to allow for a
2665 host whose endian-ness is different from the target. */
2666 datum
= bfd_get_32 (ibfd
, buffer
);
2667 if (datum
!= sizeof APUINFO_LABEL
)
2670 datum
= bfd_get_32 (ibfd
, buffer
+ 8);
2674 if (strcmp (buffer
+ 12, APUINFO_LABEL
) != 0)
2677 /* Get the number of bytes used for apuinfo entries. */
2678 datum
= bfd_get_32 (ibfd
, buffer
+ 4);
2679 if (datum
+ 20 != length
)
2682 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2683 for (i
= 0; i
< datum
; i
+= 4)
2684 apuinfo_list_add (bfd_get_32 (ibfd
, buffer
+ 20 + i
));
2687 error_message
= NULL
;
2691 /* Compute the size of the output section. */
2692 unsigned num_entries
= apuinfo_list_length ();
2694 /* Set the output section size, if it exists. */
2695 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2697 if (asec
&& ! bfd_set_section_size (abfd
, asec
, 20 + num_entries
* 4))
2700 error_message
= _("warning: unable to set size of %s section in %B");
2709 (*_bfd_error_handler
) (error_message
, ibfd
, APUINFO_SECTION_NAME
);
2712 /* Prevent the output section from accumulating the input sections'
2713 contents. We have already stored this in our linked list structure. */
2716 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2717 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2719 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2721 return apuinfo_set
&& strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0;
2724 /* Finally we can generate the output section. */
2727 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2732 unsigned num_entries
;
2733 bfd_size_type length
;
2735 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2742 length
= asec
->size
;
2746 buffer
= bfd_malloc (length
);
2749 (*_bfd_error_handler
)
2750 (_("failed to allocate space for new APUinfo section."));
2754 /* Create the apuinfo header. */
2755 num_entries
= apuinfo_list_length ();
2756 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2757 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2758 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2759 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2762 for (i
= 0; i
< num_entries
; i
++)
2764 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2768 if (length
!= asec
->size
)
2769 (*_bfd_error_handler
) (_("failed to compute new APUinfo section."));
2771 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2772 (*_bfd_error_handler
) (_("failed to install new APUinfo section."));
2776 apuinfo_list_finish ();
2780 is_nonpic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2782 bfd_byte buf
[GLINK_ENTRY_SIZE
];
2784 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, GLINK_ENTRY_SIZE
))
2787 return ((bfd_get_32 (abfd
, buf
+ 0) & 0xffff0000) == LIS_11
2788 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2789 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
2790 && bfd_get_32 (abfd
, buf
+ 12) == BCTR
);
2794 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2796 bfd_vma vma
= *(bfd_vma
*) ptr
;
2797 return ((section
->flags
& SEC_ALLOC
) != 0
2798 && section
->vma
<= vma
2799 && vma
< section
->vma
+ section
->size
);
2803 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2804 long dynsymcount
, asymbol
**dynsyms
,
2807 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2808 asection
*plt
, *relplt
, *dynamic
, *glink
;
2809 bfd_vma glink_vma
= 0;
2810 bfd_vma resolv_vma
= 0;
2821 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2824 if (dynsymcount
<= 0)
2827 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2831 plt
= bfd_get_section_by_name (abfd
, ".plt");
2835 /* Call common code to handle old-style executable PLTs. */
2836 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2837 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2838 dynsymcount
, dynsyms
, ret
);
2840 /* If this object was prelinked, the prelinker stored the address
2841 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2842 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2843 if (dynamic
!= NULL
)
2845 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2847 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2849 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2852 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2853 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2856 extdynend
= extdyn
+ dynamic
->size
;
2857 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2859 Elf_Internal_Dyn dyn
;
2860 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2862 if (dyn
.d_tag
== DT_NULL
)
2865 if (dyn
.d_tag
== DT_PPC_GOT
)
2867 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2868 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2870 && bfd_get_section_contents (abfd
, got
, buf
,
2871 g_o_t
- got
->vma
+ 4, 4))
2872 glink_vma
= bfd_get_32 (abfd
, buf
);
2879 /* Otherwise we read the first plt entry. */
2882 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
2883 glink_vma
= bfd_get_32 (abfd
, buf
);
2889 /* The .glink section usually does not survive the final
2890 link; search for the section (usually .text) where the
2891 glink stubs now reside. */
2892 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
2896 /* Determine glink PLT resolver by reading the relative branch
2897 from the first glink stub. */
2898 if (bfd_get_section_contents (abfd
, glink
, buf
,
2899 glink_vma
- glink
->vma
, 4))
2901 unsigned int insn
= bfd_get_32 (abfd
, buf
);
2903 /* The first glink stub may either branch to the resolver ... */
2905 if ((insn
& ~0x3fffffc) == 0)
2906 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
2908 /* ... or fall through a bunch of NOPs. */
2909 else if ((insn
^ B
^ NOP
) == 0)
2911 bfd_get_section_contents (abfd
, glink
, buf
,
2912 glink_vma
- glink
->vma
+ i
, 4);
2914 if (bfd_get_32 (abfd
, buf
) != NOP
)
2916 resolv_vma
= glink_vma
+ i
;
2921 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
2922 stub_vma
= glink_vma
- (bfd_vma
) count
* 16;
2923 /* If the stubs are those for -shared/-pie then we might have
2924 multiple stubs for each plt entry. If that is the case then
2925 there is no way to associate stubs with their plt entries short
2926 of figuring out the GOT pointer value used in the stub. */
2927 if (!is_nonpic_glink_stub (abfd
, glink
,
2928 glink_vma
- GLINK_ENTRY_SIZE
- glink
->vma
))
2931 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2932 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
2935 size
= count
* sizeof (asymbol
);
2936 p
= relplt
->relocation
;
2937 for (i
= 0; i
< count
; i
++, p
++)
2939 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
2941 size
+= sizeof ("+0x") - 1 + 8;
2944 size
+= sizeof (asymbol
) + sizeof ("__glink");
2947 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
2949 s
= *ret
= bfd_malloc (size
);
2953 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
2954 p
= relplt
->relocation
;
2955 for (i
= 0; i
< count
; i
++, p
++)
2959 *s
= **p
->sym_ptr_ptr
;
2960 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2961 we are defining a symbol, ensure one of them is set. */
2962 if ((s
->flags
& BSF_LOCAL
) == 0)
2963 s
->flags
|= BSF_GLOBAL
;
2964 s
->flags
|= BSF_SYNTHETIC
;
2966 s
->value
= stub_vma
- glink
->vma
;
2969 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
2970 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
2974 memcpy (names
, "+0x", sizeof ("+0x") - 1);
2975 names
+= sizeof ("+0x") - 1;
2976 bfd_sprintf_vma (abfd
, names
, p
->addend
);
2977 names
+= strlen (names
);
2979 memcpy (names
, "@plt", sizeof ("@plt"));
2980 names
+= sizeof ("@plt");
2985 /* Add a symbol at the start of the glink branch table. */
2986 memset (s
, 0, sizeof *s
);
2988 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
2990 s
->value
= glink_vma
- glink
->vma
;
2992 memcpy (names
, "__glink", sizeof ("__glink"));
2993 names
+= sizeof ("__glink");
2999 /* Add a symbol for the glink PLT resolver. */
3000 memset (s
, 0, sizeof *s
);
3002 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3004 s
->value
= resolv_vma
- glink
->vma
;
3006 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3007 names
+= sizeof ("__glink_PLTresolve");
3015 /* The following functions are specific to the ELF linker, while
3016 functions above are used generally. They appear in this file more
3017 or less in the order in which they are called. eg.
3018 ppc_elf_check_relocs is called early in the link process,
3019 ppc_elf_finish_dynamic_sections is one of the last functions
3022 /* Track PLT entries needed for a given symbol. We might need more
3023 than one glink entry per symbol when generating a pic binary. */
3026 struct plt_entry
*next
;
3028 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3029 This field stores the offset into .got2 used to initialise the
3030 GOT pointer reg. It will always be at least 32768. (Current
3031 gcc always uses an offset of 32768, but ld -r will pack .got2
3032 sections together resulting in larger offsets). */
3035 /* The .got2 section. */
3038 /* PLT refcount or offset. */
3041 bfd_signed_vma refcount
;
3045 /* .glink stub offset. */
3046 bfd_vma glink_offset
;
3049 /* Of those relocs that might be copied as dynamic relocs, this function
3050 selects those that must be copied when linking a shared library,
3051 even when the symbol is local. */
3054 must_be_dyn_reloc (struct bfd_link_info
*info
,
3055 enum elf_ppc_reloc_type r_type
)
3064 case R_PPC_REL14_BRTAKEN
:
3065 case R_PPC_REL14_BRNTAKEN
:
3071 case R_PPC_TPREL16_LO
:
3072 case R_PPC_TPREL16_HI
:
3073 case R_PPC_TPREL16_HA
:
3074 return !info
->executable
;
3078 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3079 copying dynamic variables from a shared lib into an app's dynbss
3080 section, and instead use a dynamic relocation to point into the
3082 #define ELIMINATE_COPY_RELOCS 1
3084 /* Used to track dynamic relocations for local symbols. */
3085 struct ppc_dyn_relocs
3087 struct ppc_dyn_relocs
*next
;
3089 /* The input section of the reloc. */
3092 /* Total number of relocs copied for the input section. */
3093 unsigned int count
: 31;
3095 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3096 unsigned int ifunc
: 1;
3099 /* PPC ELF linker hash entry. */
3101 struct ppc_elf_link_hash_entry
3103 struct elf_link_hash_entry elf
;
3105 /* If this symbol is used in the linker created sections, the processor
3106 specific backend uses this field to map the field into the offset
3107 from the beginning of the section. */
3108 elf_linker_section_pointers_t
*linker_section_pointer
;
3110 /* Track dynamic relocs copied for this symbol. */
3111 struct elf_dyn_relocs
*dyn_relocs
;
3113 /* Contexts in which symbol is used in the GOT (or TOC).
3114 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3115 corresponding relocs are encountered during check_relocs.
3116 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3117 indicate the corresponding GOT entry type is not needed. */
3118 #define TLS_GD 1 /* GD reloc. */
3119 #define TLS_LD 2 /* LD reloc. */
3120 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3121 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3122 #define TLS_TLS 16 /* Any TLS reloc. */
3123 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3124 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3127 /* Nonzero if we have seen a small data relocation referring to this
3129 unsigned char has_sda_refs
;
3132 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3134 /* PPC ELF linker hash table. */
3136 struct ppc_elf_link_hash_table
3138 struct elf_link_hash_table elf
;
3140 /* Various options passed from the linker. */
3141 struct ppc_elf_params
*params
;
3143 /* Short-cuts to get to dynamic linker sections. */
3155 elf_linker_section_t sdata
[2];
3157 asection
*glink_eh_frame
;
3159 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3162 /* The .got.plt section (VxWorks only)*/
3165 /* Shortcut to __tls_get_addr. */
3166 struct elf_link_hash_entry
*tls_get_addr
;
3168 /* The bfd that forced an old-style PLT. */
3171 /* TLS local dynamic got entry handling. */
3173 bfd_signed_vma refcount
;
3177 /* Offset of branch table to PltResolve function in glink. */
3178 bfd_vma glink_pltresolve
;
3180 /* Size of reserved GOT entries. */
3181 unsigned int got_header_size
;
3182 /* Non-zero if allocating the header left a gap. */
3183 unsigned int got_gap
;
3185 /* The type of PLT we have chosen to use. */
3186 enum ppc_elf_plt_type plt_type
;
3188 /* True if the target system is VxWorks. */
3189 unsigned int is_vxworks
:1;
3191 /* The size of PLT entries. */
3193 /* The distance between adjacent PLT slots. */
3195 /* The size of the first PLT entry. */
3196 int plt_initial_entry_size
;
3198 /* Small local sym cache. */
3199 struct sym_cache sym_cache
;
3202 /* Rename some of the generic section flags to better document how they
3203 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3205 /* Nonzero if this section has TLS related relocations. */
3206 #define has_tls_reloc sec_flg0
3208 /* Nonzero if this section has a call to __tls_get_addr. */
3209 #define has_tls_get_addr_call sec_flg1
3211 /* Get the PPC ELF linker hash table from a link_info structure. */
3213 #define ppc_elf_hash_table(p) \
3214 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3215 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3217 /* Create an entry in a PPC ELF linker hash table. */
3219 static struct bfd_hash_entry
*
3220 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3221 struct bfd_hash_table
*table
,
3224 /* Allocate the structure if it has not already been allocated by a
3228 entry
= bfd_hash_allocate (table
,
3229 sizeof (struct ppc_elf_link_hash_entry
));
3234 /* Call the allocation method of the superclass. */
3235 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3238 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
3239 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
3240 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
3241 ppc_elf_hash_entry (entry
)->has_sda_refs
= 0;
3247 /* Create a PPC ELF linker hash table. */
3249 static struct bfd_link_hash_table
*
3250 ppc_elf_link_hash_table_create (bfd
*abfd
)
3252 struct ppc_elf_link_hash_table
*ret
;
3253 static struct ppc_elf_params default_params
= { PLT_OLD
, 0, 1, 0, 0, 12 };
3255 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
3259 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
3260 ppc_elf_link_hash_newfunc
,
3261 sizeof (struct ppc_elf_link_hash_entry
),
3268 ret
->elf
.init_plt_refcount
.refcount
= 0;
3269 ret
->elf
.init_plt_refcount
.glist
= NULL
;
3270 ret
->elf
.init_plt_offset
.offset
= 0;
3271 ret
->elf
.init_plt_offset
.glist
= NULL
;
3273 ret
->params
= &default_params
;
3275 ret
->sdata
[0].name
= ".sdata";
3276 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
3277 ret
->sdata
[0].bss_name
= ".sbss";
3279 ret
->sdata
[1].name
= ".sdata2";
3280 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
3281 ret
->sdata
[1].bss_name
= ".sbss2";
3283 ret
->plt_entry_size
= 12;
3284 ret
->plt_slot_size
= 8;
3285 ret
->plt_initial_entry_size
= 72;
3287 return &ret
->elf
.root
;
3290 /* Hook linker params into hash table. */
3293 ppc_elf_link_params (struct bfd_link_info
*info
, struct ppc_elf_params
*params
)
3295 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3298 htab
->params
= params
;
3301 /* Create .got and the related sections. */
3304 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
3306 struct ppc_elf_link_hash_table
*htab
;
3310 if (!_bfd_elf_create_got_section (abfd
, info
))
3313 htab
= ppc_elf_hash_table (info
);
3314 htab
->got
= s
= bfd_get_linker_section (abfd
, ".got");
3318 if (htab
->is_vxworks
)
3320 htab
->sgotplt
= bfd_get_linker_section (abfd
, ".got.plt");
3326 /* The powerpc .got has a blrl instruction in it. Mark it
3328 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
3329 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3330 if (!bfd_set_section_flags (abfd
, s
, flags
))
3334 htab
->relgot
= bfd_get_linker_section (abfd
, ".rela.got");
3341 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3342 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3343 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3346 ppc_elf_create_linker_section (bfd
*abfd
,
3347 struct bfd_link_info
*info
,
3349 elf_linker_section_t
*lsect
)
3353 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3354 | SEC_LINKER_CREATED
);
3356 s
= bfd_make_section_anyway_with_flags (abfd
, lsect
->name
, flags
);
3361 /* Define the sym on the first section of this name. */
3362 s
= bfd_get_section_by_name (abfd
, lsect
->name
);
3364 lsect
->sym
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, lsect
->sym_name
);
3365 if (lsect
->sym
== NULL
)
3367 lsect
->sym
->root
.u
.def
.value
= 0x8000;
3372 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
3374 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3378 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
3379 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3380 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
3383 || !bfd_set_section_alignment (abfd
, s
,
3384 htab
->params
->ppc476_workaround
? 6 : 4))
3387 if (!info
->no_ld_generated_unwind_info
)
3389 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3390 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3391 s
= bfd_make_section_anyway_with_flags (abfd
, ".eh_frame", flags
);
3392 htab
->glink_eh_frame
= s
;
3394 || !bfd_set_section_alignment (abfd
, s
, 2))
3398 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
3399 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
3402 || !bfd_set_section_alignment (abfd
, s
, 4))
3405 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3406 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3407 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.iplt", flags
);
3410 || ! bfd_set_section_alignment (abfd
, s
, 2))
3413 if (!ppc_elf_create_linker_section (abfd
, info
, 0,
3417 if (!ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3424 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3425 to output sections (just like _bfd_elf_create_dynamic_sections has
3426 to create .dynbss and .rela.bss). */
3429 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3431 struct ppc_elf_link_hash_table
*htab
;
3435 htab
= ppc_elf_hash_table (info
);
3437 if (htab
->got
== NULL
3438 && !ppc_elf_create_got (abfd
, info
))
3441 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
3444 if (htab
->glink
== NULL
3445 && !ppc_elf_create_glink (abfd
, info
))
3448 htab
->dynbss
= bfd_get_linker_section (abfd
, ".dynbss");
3449 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynsbss",
3450 SEC_ALLOC
| SEC_LINKER_CREATED
);
3457 htab
->relbss
= bfd_get_linker_section (abfd
, ".rela.bss");
3458 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3459 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3460 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.sbss", flags
);
3463 || ! bfd_set_section_alignment (abfd
, s
, 2))
3467 if (htab
->is_vxworks
3468 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
3471 htab
->relplt
= bfd_get_linker_section (abfd
, ".rela.plt");
3472 htab
->plt
= s
= bfd_get_linker_section (abfd
, ".plt");
3476 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
3477 if (htab
->plt_type
== PLT_VXWORKS
)
3478 /* The VxWorks PLT is a loaded section with contents. */
3479 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3480 return bfd_set_section_flags (abfd
, s
, flags
);
3483 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3486 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3487 struct elf_link_hash_entry
*dir
,
3488 struct elf_link_hash_entry
*ind
)
3490 struct ppc_elf_link_hash_entry
*edir
, *eind
;
3492 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
3493 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
3495 edir
->tls_mask
|= eind
->tls_mask
;
3496 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3498 /* If called to transfer flags for a weakdef during processing
3499 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3500 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3501 if (!(ELIMINATE_COPY_RELOCS
3502 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3503 && edir
->elf
.dynamic_adjusted
))
3504 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3506 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3507 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3508 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3509 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3510 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3512 if (eind
->dyn_relocs
!= NULL
)
3514 if (edir
->dyn_relocs
!= NULL
)
3516 struct elf_dyn_relocs
**pp
;
3517 struct elf_dyn_relocs
*p
;
3519 /* Add reloc counts against the indirect sym to the direct sym
3520 list. Merge any entries against the same section. */
3521 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3523 struct elf_dyn_relocs
*q
;
3525 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3526 if (q
->sec
== p
->sec
)
3528 q
->pc_count
+= p
->pc_count
;
3529 q
->count
+= p
->count
;
3536 *pp
= edir
->dyn_relocs
;
3539 edir
->dyn_relocs
= eind
->dyn_relocs
;
3540 eind
->dyn_relocs
= NULL
;
3543 /* If we were called to copy over info for a weak sym, that's all.
3544 You might think dyn_relocs need not be copied over; After all,
3545 both syms will be dynamic or both non-dynamic so we're just
3546 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3547 code in ppc_elf_adjust_dynamic_symbol needs to check for
3548 dyn_relocs in read-only sections, and it does so on what is the
3550 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3553 /* Copy over the GOT refcount entries that we may have already seen to
3554 the symbol which just became indirect. */
3555 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3556 eind
->elf
.got
.refcount
= 0;
3558 /* And plt entries. */
3559 if (eind
->elf
.plt
.plist
!= NULL
)
3561 if (edir
->elf
.plt
.plist
!= NULL
)
3563 struct plt_entry
**entp
;
3564 struct plt_entry
*ent
;
3566 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3568 struct plt_entry
*dent
;
3570 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3571 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3573 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3580 *entp
= edir
->elf
.plt
.plist
;
3583 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3584 eind
->elf
.plt
.plist
= NULL
;
3587 if (eind
->elf
.dynindx
!= -1)
3589 if (edir
->elf
.dynindx
!= -1)
3590 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3591 edir
->elf
.dynstr_index
);
3592 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3593 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3594 eind
->elf
.dynindx
= -1;
3595 eind
->elf
.dynstr_index
= 0;
3599 /* Hook called by the linker routine which adds symbols from an object
3600 file. We use it to put .comm items in .sbss, and not .bss. */
3603 ppc_elf_add_symbol_hook (bfd
*abfd
,
3604 struct bfd_link_info
*info
,
3605 Elf_Internal_Sym
*sym
,
3606 const char **namep ATTRIBUTE_UNUSED
,
3607 flagword
*flagsp ATTRIBUTE_UNUSED
,
3611 if (sym
->st_shndx
== SHN_COMMON
3612 && !info
->relocatable
3613 && is_ppc_elf (info
->output_bfd
)
3614 && sym
->st_size
<= elf_gp_size (abfd
))
3616 /* Common symbols less than or equal to -G nn bytes are automatically
3618 struct ppc_elf_link_hash_table
*htab
;
3620 htab
= ppc_elf_hash_table (info
);
3621 if (htab
->sbss
== NULL
)
3623 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3625 if (!htab
->elf
.dynobj
)
3626 htab
->elf
.dynobj
= abfd
;
3628 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3631 if (htab
->sbss
== NULL
)
3636 *valp
= sym
->st_size
;
3639 if ((abfd
->flags
& DYNAMIC
) == 0
3640 && (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3641 || ELF_ST_BIND (sym
->st_info
) == STB_GNU_UNIQUE
))
3642 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
3647 /* Find a linker generated pointer with a given addend and type. */
3649 static elf_linker_section_pointers_t
*
3650 elf_find_pointer_linker_section
3651 (elf_linker_section_pointers_t
*linker_pointers
,
3653 elf_linker_section_t
*lsect
)
3655 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3656 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3657 return linker_pointers
;
3662 /* Allocate a pointer to live in a linker created section. */
3665 elf_allocate_pointer_linker_section (bfd
*abfd
,
3666 elf_linker_section_t
*lsect
,
3667 struct elf_link_hash_entry
*h
,
3668 const Elf_Internal_Rela
*rel
)
3670 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3671 elf_linker_section_pointers_t
*linker_section_ptr
;
3672 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3675 BFD_ASSERT (lsect
!= NULL
);
3677 /* Is this a global symbol? */
3680 struct ppc_elf_link_hash_entry
*eh
;
3682 /* Has this symbol already been allocated? If so, our work is done. */
3683 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3684 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3689 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3693 BFD_ASSERT (is_ppc_elf (abfd
));
3695 /* Allocation of a pointer to a local symbol. */
3696 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3698 /* Allocate a table to hold the local symbols if first time. */
3701 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3704 amt
*= sizeof (elf_linker_section_pointers_t
*);
3705 ptr
= bfd_zalloc (abfd
, amt
);
3710 elf_local_ptr_offsets (abfd
) = ptr
;
3713 /* Has this symbol already been allocated? If so, our work is done. */
3714 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3719 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3722 /* Allocate space for a pointer in the linker section, and allocate
3723 a new pointer record from internal memory. */
3724 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3725 amt
= sizeof (elf_linker_section_pointers_t
);
3726 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3728 if (!linker_section_ptr
)
3731 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3732 linker_section_ptr
->addend
= rel
->r_addend
;
3733 linker_section_ptr
->lsect
= lsect
;
3734 *ptr_linker_section_ptr
= linker_section_ptr
;
3736 if (!bfd_set_section_alignment (lsect
->section
->owner
, lsect
->section
, 2))
3738 linker_section_ptr
->offset
= lsect
->section
->size
;
3739 lsect
->section
->size
+= 4;
3743 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3744 lsect
->name
, (long) linker_section_ptr
->offset
,
3745 (long) lsect
->section
->size
);
3751 static struct plt_entry
**
3752 update_local_sym_info (bfd
*abfd
,
3753 Elf_Internal_Shdr
*symtab_hdr
,
3754 unsigned long r_symndx
,
3757 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3758 struct plt_entry
**local_plt
;
3759 char *local_got_tls_masks
;
3761 if (local_got_refcounts
== NULL
)
3763 bfd_size_type size
= symtab_hdr
->sh_info
;
3765 size
*= (sizeof (*local_got_refcounts
)
3766 + sizeof (*local_plt
)
3767 + sizeof (*local_got_tls_masks
));
3768 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3769 if (local_got_refcounts
== NULL
)
3771 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3774 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3775 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3776 local_got_tls_masks
[r_symndx
] |= tls_type
;
3777 if (tls_type
!= PLT_IFUNC
)
3778 local_got_refcounts
[r_symndx
] += 1;
3779 return local_plt
+ r_symndx
;
3783 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3784 asection
*sec
, bfd_vma addend
)
3786 struct plt_entry
*ent
;
3790 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3791 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3795 bfd_size_type amt
= sizeof (*ent
);
3796 ent
= bfd_alloc (abfd
, amt
);
3801 ent
->addend
= addend
;
3802 ent
->plt
.refcount
= 0;
3805 ent
->plt
.refcount
+= 1;
3809 static struct plt_entry
*
3810 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3812 struct plt_entry
*ent
;
3816 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3817 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3823 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3825 return (r_type
== R_PPC_PLTREL24
3826 || r_type
== R_PPC_LOCAL24PC
3827 || r_type
== R_PPC_REL24
3828 || r_type
== R_PPC_REL14
3829 || r_type
== R_PPC_REL14_BRTAKEN
3830 || r_type
== R_PPC_REL14_BRNTAKEN
3831 || r_type
== R_PPC_ADDR24
3832 || r_type
== R_PPC_ADDR14
3833 || r_type
== R_PPC_ADDR14_BRTAKEN
3834 || r_type
== R_PPC_ADDR14_BRNTAKEN
);
3838 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3840 (*_bfd_error_handler
)
3841 (_("%B: relocation %s cannot be used when making a shared object"),
3843 ppc_elf_howto_table
[r_type
]->name
);
3844 bfd_set_error (bfd_error_bad_value
);
3847 /* Look through the relocs for a section during the first phase, and
3848 allocate space in the global offset table or procedure linkage
3852 ppc_elf_check_relocs (bfd
*abfd
,
3853 struct bfd_link_info
*info
,
3855 const Elf_Internal_Rela
*relocs
)
3857 struct ppc_elf_link_hash_table
*htab
;
3858 Elf_Internal_Shdr
*symtab_hdr
;
3859 struct elf_link_hash_entry
**sym_hashes
;
3860 const Elf_Internal_Rela
*rel
;
3861 const Elf_Internal_Rela
*rel_end
;
3862 asection
*got2
, *sreloc
;
3863 struct elf_link_hash_entry
*tga
;
3865 if (info
->relocatable
)
3868 /* Don't do anything special with non-loaded, non-alloced sections.
3869 In particular, any relocs in such sections should not affect GOT
3870 and PLT reference counting (ie. we don't allow them to create GOT
3871 or PLT entries), there's no possibility or desire to optimize TLS
3872 relocs, and there's not much point in propagating relocs to shared
3873 libs that the dynamic linker won't relocate. */
3874 if ((sec
->flags
& SEC_ALLOC
) == 0)
3878 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3882 BFD_ASSERT (is_ppc_elf (abfd
));
3884 /* Initialize howto table if not already done. */
3885 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3886 ppc_elf_howto_init ();
3888 htab
= ppc_elf_hash_table (info
);
3889 if (htab
->glink
== NULL
)
3891 if (htab
->elf
.dynobj
== NULL
)
3892 htab
->elf
.dynobj
= abfd
;
3893 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
3896 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3897 FALSE
, FALSE
, TRUE
);
3898 symtab_hdr
= &elf_symtab_hdr (abfd
);
3899 sym_hashes
= elf_sym_hashes (abfd
);
3900 got2
= bfd_get_section_by_name (abfd
, ".got2");
3903 rel_end
= relocs
+ sec
->reloc_count
;
3904 for (rel
= relocs
; rel
< rel_end
; rel
++)
3906 unsigned long r_symndx
;
3907 enum elf_ppc_reloc_type r_type
;
3908 struct elf_link_hash_entry
*h
;
3911 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3912 if (r_symndx
< symtab_hdr
->sh_info
)
3916 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3917 while (h
->root
.type
== bfd_link_hash_indirect
3918 || h
->root
.type
== bfd_link_hash_warning
)
3919 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3921 /* PR15323, ref flags aren't set for references in the same
3923 h
->root
.non_ir_ref
= 1;
3926 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3927 This shows up in particular in an R_PPC_ADDR32 in the eabi
3930 && htab
->got
== NULL
3931 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3933 if (htab
->elf
.dynobj
== NULL
)
3934 htab
->elf
.dynobj
= abfd
;
3935 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3937 BFD_ASSERT (h
== htab
->elf
.hgot
);
3941 r_type
= ELF32_R_TYPE (rel
->r_info
);
3942 if (h
== NULL
&& !htab
->is_vxworks
)
3944 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3949 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
3951 struct plt_entry
**ifunc
;
3953 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3954 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
3959 /* STT_GNU_IFUNC symbols must have a PLT entry;
3960 In a non-pie executable even when there are
3963 || is_branch_reloc (r_type
))
3966 if (r_type
== R_PPC_PLTREL24
)
3968 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
3970 addend
= rel
->r_addend
;
3972 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
3978 if (!htab
->is_vxworks
3979 && is_branch_reloc (r_type
)
3984 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
3985 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
3986 /* We have a new-style __tls_get_addr call with a marker
3990 /* Mark this section as having an old-style call. */
3991 sec
->has_tls_get_addr_call
= 1;
3998 /* These special tls relocs tie a call to __tls_get_addr with
3999 its parameter symbol. */
4002 case R_PPC_GOT_TLSLD16
:
4003 case R_PPC_GOT_TLSLD16_LO
:
4004 case R_PPC_GOT_TLSLD16_HI
:
4005 case R_PPC_GOT_TLSLD16_HA
:
4006 tls_type
= TLS_TLS
| TLS_LD
;
4009 case R_PPC_GOT_TLSGD16
:
4010 case R_PPC_GOT_TLSGD16_LO
:
4011 case R_PPC_GOT_TLSGD16_HI
:
4012 case R_PPC_GOT_TLSGD16_HA
:
4013 tls_type
= TLS_TLS
| TLS_GD
;
4016 case R_PPC_GOT_TPREL16
:
4017 case R_PPC_GOT_TPREL16_LO
:
4018 case R_PPC_GOT_TPREL16_HI
:
4019 case R_PPC_GOT_TPREL16_HA
:
4021 info
->flags
|= DF_STATIC_TLS
;
4022 tls_type
= TLS_TLS
| TLS_TPREL
;
4025 case R_PPC_GOT_DTPREL16
:
4026 case R_PPC_GOT_DTPREL16_LO
:
4027 case R_PPC_GOT_DTPREL16_HI
:
4028 case R_PPC_GOT_DTPREL16_HA
:
4029 tls_type
= TLS_TLS
| TLS_DTPREL
;
4031 sec
->has_tls_reloc
= 1;
4034 /* GOT16 relocations */
4036 case R_PPC_GOT16_LO
:
4037 case R_PPC_GOT16_HI
:
4038 case R_PPC_GOT16_HA
:
4039 /* This symbol requires a global offset table entry. */
4040 if (htab
->got
== NULL
)
4042 if (htab
->elf
.dynobj
== NULL
)
4043 htab
->elf
.dynobj
= abfd
;
4044 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4049 h
->got
.refcount
+= 1;
4050 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4053 /* This is a global offset table entry for a local symbol. */
4054 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4057 /* We may also need a plt entry if the symbol turns out to be
4059 if (h
!= NULL
&& !info
->shared
)
4061 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4066 /* Indirect .sdata relocation. */
4067 case R_PPC_EMB_SDAI16
:
4070 bad_shared_reloc (abfd
, r_type
);
4073 htab
->sdata
[0].sym
->ref_regular
= 1;
4074 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[0],
4079 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4080 h
->non_got_ref
= TRUE
;
4084 /* Indirect .sdata2 relocation. */
4085 case R_PPC_EMB_SDA2I16
:
4088 bad_shared_reloc (abfd
, r_type
);
4091 htab
->sdata
[1].sym
->ref_regular
= 1;
4092 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[1],
4097 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4098 h
->non_got_ref
= TRUE
;
4102 case R_PPC_SDAREL16
:
4103 htab
->sdata
[0].sym
->ref_regular
= 1;
4106 case R_PPC_VLE_SDAREL_LO16A
:
4107 case R_PPC_VLE_SDAREL_LO16D
:
4108 case R_PPC_VLE_SDAREL_HI16A
:
4109 case R_PPC_VLE_SDAREL_HI16D
:
4110 case R_PPC_VLE_SDAREL_HA16A
:
4111 case R_PPC_VLE_SDAREL_HA16D
:
4114 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4115 h
->non_got_ref
= TRUE
;
4119 case R_PPC_VLE_REL8
:
4120 case R_PPC_VLE_REL15
:
4121 case R_PPC_VLE_REL24
:
4122 case R_PPC_VLE_LO16A
:
4123 case R_PPC_VLE_LO16D
:
4124 case R_PPC_VLE_HI16A
:
4125 case R_PPC_VLE_HI16D
:
4126 case R_PPC_VLE_HA16A
:
4127 case R_PPC_VLE_HA16D
:
4130 case R_PPC_EMB_SDA2REL
:
4133 bad_shared_reloc (abfd
, r_type
);
4136 htab
->sdata
[1].sym
->ref_regular
= 1;
4139 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4140 h
->non_got_ref
= TRUE
;
4144 case R_PPC_VLE_SDA21_LO
:
4145 case R_PPC_VLE_SDA21
:
4146 case R_PPC_EMB_SDA21
:
4147 case R_PPC_EMB_RELSDA
:
4150 bad_shared_reloc (abfd
, r_type
);
4155 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4156 h
->non_got_ref
= TRUE
;
4160 case R_PPC_EMB_NADDR32
:
4161 case R_PPC_EMB_NADDR16
:
4162 case R_PPC_EMB_NADDR16_LO
:
4163 case R_PPC_EMB_NADDR16_HI
:
4164 case R_PPC_EMB_NADDR16_HA
:
4167 bad_shared_reloc (abfd
, r_type
);
4171 h
->non_got_ref
= TRUE
;
4174 case R_PPC_PLTREL24
:
4179 case R_PPC_PLTREL32
:
4180 case R_PPC_PLT16_LO
:
4181 case R_PPC_PLT16_HI
:
4182 case R_PPC_PLT16_HA
:
4184 fprintf (stderr
, "Reloc requires a PLT entry\n");
4186 /* This symbol requires a procedure linkage table entry. We
4187 actually build the entry in finish_dynamic_symbol,
4188 because this might be a case of linking PIC code without
4189 linking in any dynamic objects, in which case we don't
4190 need to generate a procedure linkage table after all. */
4194 /* It does not make sense to have a procedure linkage
4195 table entry for a local symbol. */
4196 info
->callbacks
->einfo (_("%P: %H: %s reloc against local symbol\n"),
4197 abfd
, sec
, rel
->r_offset
,
4198 ppc_elf_howto_table
[r_type
]->name
);
4199 bfd_set_error (bfd_error_bad_value
);
4206 if (r_type
== R_PPC_PLTREL24
)
4208 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4210 addend
= rel
->r_addend
;
4213 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4218 /* The following relocations don't need to propagate the
4219 relocation if linking a shared object since they are
4220 section relative. */
4222 case R_PPC_SECTOFF_LO
:
4223 case R_PPC_SECTOFF_HI
:
4224 case R_PPC_SECTOFF_HA
:
4225 case R_PPC_DTPREL16
:
4226 case R_PPC_DTPREL16_LO
:
4227 case R_PPC_DTPREL16_HI
:
4228 case R_PPC_DTPREL16_HA
:
4233 case R_PPC_REL16_LO
:
4234 case R_PPC_REL16_HI
:
4235 case R_PPC_REL16_HA
:
4236 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4239 /* These are just markers. */
4241 case R_PPC_EMB_MRKREF
:
4245 case R_PPC_RELAX_PLT
:
4246 case R_PPC_RELAX_PLTREL24
:
4249 /* These should only appear in dynamic objects. */
4251 case R_PPC_GLOB_DAT
:
4252 case R_PPC_JMP_SLOT
:
4253 case R_PPC_RELATIVE
:
4254 case R_PPC_IRELATIVE
:
4257 /* These aren't handled yet. We'll report an error later. */
4259 case R_PPC_EMB_RELSEC16
:
4260 case R_PPC_EMB_RELST_LO
:
4261 case R_PPC_EMB_RELST_HI
:
4262 case R_PPC_EMB_RELST_HA
:
4263 case R_PPC_EMB_BIT_FLD
:
4266 /* This refers only to functions defined in the shared library. */
4267 case R_PPC_LOCAL24PC
:
4268 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4270 htab
->plt_type
= PLT_OLD
;
4271 htab
->old_bfd
= abfd
;
4273 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4277 info
->callbacks
->einfo (_("%P: %H: @local call to ifunc %s\n"),
4278 abfd
, sec
, rel
->r_offset
,
4279 h
->root
.root
.string
);
4280 bfd_set_error (bfd_error_bad_value
);
4284 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4289 /* This relocation describes the C++ object vtable hierarchy.
4290 Reconstruct it for later use during GC. */
4291 case R_PPC_GNU_VTINHERIT
:
4292 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4296 /* This relocation describes which C++ vtable entries are actually
4297 used. Record for later use during GC. */
4298 case R_PPC_GNU_VTENTRY
:
4299 BFD_ASSERT (h
!= NULL
);
4301 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4305 /* We shouldn't really be seeing these. */
4308 case R_PPC_TPREL16_LO
:
4309 case R_PPC_TPREL16_HI
:
4310 case R_PPC_TPREL16_HA
:
4312 info
->flags
|= DF_STATIC_TLS
;
4316 case R_PPC_DTPMOD32
:
4317 case R_PPC_DTPREL32
:
4323 && (sec
->flags
& SEC_CODE
) != 0
4325 && htab
->plt_type
== PLT_UNSET
)
4327 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4328 the start of a function, which assembles to a REL32
4329 reference to .got2. If we detect one of these, then
4330 force the old PLT layout because the linker cannot
4331 reliably deduce the GOT pointer value needed for
4334 Elf_Internal_Sym
*isym
;
4336 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4341 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4344 htab
->plt_type
= PLT_OLD
;
4345 htab
->old_bfd
= abfd
;
4348 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4354 case R_PPC_ADDR16_LO
:
4355 case R_PPC_ADDR16_HI
:
4356 case R_PPC_ADDR16_HA
:
4359 if (h
!= NULL
&& !info
->shared
)
4361 /* We may need a plt entry if the symbol turns out to be
4362 a function defined in a dynamic object. */
4363 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4366 /* We may need a copy reloc too. */
4368 h
->pointer_equality_needed
= 1;
4374 case R_PPC_REL14_BRTAKEN
:
4375 case R_PPC_REL14_BRNTAKEN
:
4378 if (h
== htab
->elf
.hgot
)
4380 if (htab
->plt_type
== PLT_UNSET
)
4382 htab
->plt_type
= PLT_OLD
;
4383 htab
->old_bfd
= abfd
;
4391 case R_PPC_ADDR14_BRTAKEN
:
4392 case R_PPC_ADDR14_BRNTAKEN
:
4393 if (h
!= NULL
&& !info
->shared
)
4395 /* We may need a plt entry if the symbol turns out to be
4396 a function defined in a dynamic object. */
4398 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4404 /* If we are creating a shared library, and this is a reloc
4405 against a global symbol, or a non PC relative reloc
4406 against a local symbol, then we need to copy the reloc
4407 into the shared library. However, if we are linking with
4408 -Bsymbolic, we do not need to copy a reloc against a
4409 global symbol which is defined in an object we are
4410 including in the link (i.e., DEF_REGULAR is set). At
4411 this point we have not seen all the input files, so it is
4412 possible that DEF_REGULAR is not set now but will be set
4413 later (it is never cleared). In case of a weak definition,
4414 DEF_REGULAR may be cleared later by a strong definition in
4415 a shared library. We account for that possibility below by
4416 storing information in the dyn_relocs field of the hash
4417 table entry. A similar situation occurs when creating
4418 shared libraries and symbol visibility changes render the
4421 If on the other hand, we are creating an executable, we
4422 may need to keep relocations for symbols satisfied by a
4423 dynamic library if we manage to avoid copy relocs for the
4426 && (must_be_dyn_reloc (info
, r_type
)
4428 && (!SYMBOLIC_BIND (info
, h
)
4429 || h
->root
.type
== bfd_link_hash_defweak
4430 || !h
->def_regular
))))
4431 || (ELIMINATE_COPY_RELOCS
4434 && (h
->root
.type
== bfd_link_hash_defweak
4435 || !h
->def_regular
)))
4439 "ppc_elf_check_relocs needs to "
4440 "create relocation for %s\n",
4441 (h
&& h
->root
.root
.string
4442 ? h
->root
.root
.string
: "<unknown>"));
4446 if (htab
->elf
.dynobj
== NULL
)
4447 htab
->elf
.dynobj
= abfd
;
4449 sreloc
= _bfd_elf_make_dynamic_reloc_section
4450 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4456 /* If this is a global symbol, we count the number of
4457 relocations we need for this symbol. */
4460 struct elf_dyn_relocs
*p
;
4461 struct elf_dyn_relocs
**rel_head
;
4463 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4465 if (p
== NULL
|| p
->sec
!= sec
)
4467 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4470 p
->next
= *rel_head
;
4477 if (!must_be_dyn_reloc (info
, r_type
))
4482 /* Track dynamic relocs needed for local syms too.
4483 We really need local syms available to do this
4485 struct ppc_dyn_relocs
*p
;
4486 struct ppc_dyn_relocs
**rel_head
;
4487 bfd_boolean is_ifunc
;
4490 Elf_Internal_Sym
*isym
;
4492 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4497 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4501 vpp
= &elf_section_data (s
)->local_dynrel
;
4502 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4503 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4505 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4507 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4509 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4512 p
->next
= *rel_head
;
4515 p
->ifunc
= is_ifunc
;
4530 /* Merge object attributes from IBFD into OBFD. Raise an error if
4531 there are conflicting attributes. */
4533 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
4535 obj_attribute
*in_attr
, *in_attrs
;
4536 obj_attribute
*out_attr
, *out_attrs
;
4538 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
4540 /* This is the first object. Copy the attributes. */
4541 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
4543 /* Use the Tag_null value to indicate the attributes have been
4545 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
4550 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4551 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4553 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4554 non-conflicting ones. */
4555 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4556 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4557 if (in_attr
->i
!= out_attr
->i
)
4560 if (out_attr
->i
== 0)
4561 out_attr
->i
= in_attr
->i
;
4562 else if (in_attr
->i
== 0)
4564 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4566 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
4567 else if (out_attr
->i
== 1 && in_attr
->i
== 3)
4569 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4571 else if (out_attr
->i
== 3 && in_attr
->i
== 1)
4573 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4575 else if (out_attr
->i
== 3 && in_attr
->i
== 2)
4577 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4579 else if (out_attr
->i
== 2 && (in_attr
->i
== 1 || in_attr
->i
== 3))
4581 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
4582 else if (in_attr
->i
> 3)
4584 (_("Warning: %B uses unknown floating point ABI %d"), ibfd
,
4588 (_("Warning: %B uses unknown floating point ABI %d"), obfd
,
4592 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4593 merge non-conflicting ones. */
4594 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4595 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4596 if (in_attr
->i
!= out_attr
->i
)
4598 const char *in_abi
= NULL
, *out_abi
= NULL
;
4602 case 1: in_abi
= "generic"; break;
4603 case 2: in_abi
= "AltiVec"; break;
4604 case 3: in_abi
= "SPE"; break;
4607 switch (out_attr
->i
)
4609 case 1: out_abi
= "generic"; break;
4610 case 2: out_abi
= "AltiVec"; break;
4611 case 3: out_abi
= "SPE"; break;
4615 if (out_attr
->i
== 0)
4616 out_attr
->i
= in_attr
->i
;
4617 else if (in_attr
->i
== 0)
4619 /* For now, allow generic to transition to AltiVec or SPE
4620 without a warning. If GCC marked files with their stack
4621 alignment and used don't-care markings for files which are
4622 not affected by the vector ABI, we could warn about this
4624 else if (out_attr
->i
== 1)
4625 out_attr
->i
= in_attr
->i
;
4626 else if (in_attr
->i
== 1)
4628 else if (in_abi
== NULL
)
4630 (_("Warning: %B uses unknown vector ABI %d"), ibfd
,
4632 else if (out_abi
== NULL
)
4634 (_("Warning: %B uses unknown vector ABI %d"), obfd
,
4638 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4639 ibfd
, obfd
, in_abi
, out_abi
);
4642 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4643 and merge non-conflicting ones. */
4644 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4645 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4646 if (in_attr
->i
!= out_attr
->i
)
4649 if (out_attr
->i
== 0)
4650 out_attr
->i
= in_attr
->i
;
4651 else if (in_attr
->i
== 0)
4653 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4655 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd
, ibfd
);
4656 else if (out_attr
->i
== 2 && in_attr
->i
== 1)
4658 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd
, obfd
);
4659 else if (in_attr
->i
> 2)
4661 (_("Warning: %B uses unknown small structure return convention %d"), ibfd
,
4665 (_("Warning: %B uses unknown small structure return convention %d"), obfd
,
4669 /* Merge Tag_compatibility attributes and any common GNU ones. */
4670 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
4675 /* Merge backend specific data from an object file to the output
4676 object file when linking. */
4679 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4685 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4688 /* Check if we have the same endianness. */
4689 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
4692 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
4695 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4696 old_flags
= elf_elfheader (obfd
)->e_flags
;
4697 if (!elf_flags_init (obfd
))
4699 /* First call, no flags set. */
4700 elf_flags_init (obfd
) = TRUE
;
4701 elf_elfheader (obfd
)->e_flags
= new_flags
;
4704 /* Compatible flags are ok. */
4705 else if (new_flags
== old_flags
)
4708 /* Incompatible flags. */
4711 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4712 to be linked with either. */
4714 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4715 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4718 (*_bfd_error_handler
)
4719 (_("%B: compiled with -mrelocatable and linked with "
4720 "modules compiled normally"), ibfd
);
4722 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4723 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4726 (*_bfd_error_handler
)
4727 (_("%B: compiled normally and linked with "
4728 "modules compiled with -mrelocatable"), ibfd
);
4731 /* The output is -mrelocatable-lib iff both the input files are. */
4732 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4733 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4735 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4736 but each input file is either -mrelocatable or -mrelocatable-lib. */
4737 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4738 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4739 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4740 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4742 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4743 any module uses it. */
4744 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4746 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4747 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4749 /* Warn about any other mismatches. */
4750 if (new_flags
!= old_flags
)
4753 (*_bfd_error_handler
)
4754 (_("%B: uses different e_flags (0x%lx) fields "
4755 "than previous modules (0x%lx)"),
4756 ibfd
, (long) new_flags
, (long) old_flags
);
4761 bfd_set_error (bfd_error_bad_value
);
4770 ppc_elf_vle_split16 (bfd
*output_bfd
, bfd_byte
*loc
,
4772 split16_format_type split16_format
)
4775 unsigned int insn
, top5
;
4777 insn
= bfd_get_32 (output_bfd
, loc
);
4778 top5
= value
& 0xf800;
4779 top5
= top5
<< (split16_format
== split16a_type
? 9 : 5);
4781 insn
|= value
& 0x7ff;
4782 bfd_put_32 (output_bfd
, insn
, loc
);
4786 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4787 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4789 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4790 struct bfd_link_info
*info
)
4792 struct ppc_elf_link_hash_table
*htab
;
4795 htab
= ppc_elf_hash_table (info
);
4797 if (htab
->plt_type
== PLT_UNSET
)
4799 struct elf_link_hash_entry
*h
;
4801 if (htab
->params
->plt_style
== PLT_OLD
)
4802 htab
->plt_type
= PLT_OLD
;
4803 else if (info
->shared
4804 && htab
->elf
.dynamic_sections_created
4805 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
4806 FALSE
, FALSE
, TRUE
)) != NULL
4807 && (h
->type
== STT_FUNC
4810 && !(SYMBOL_CALLS_LOCAL (info
, h
)
4811 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4812 && h
->root
.type
== bfd_link_hash_undefweak
)))
4814 /* Profiling of shared libs (and pies) is not supported with
4815 secure plt, because ppc32 does profiling before a
4816 function prologue and a secure plt pic call stubs needs
4817 r30 to be set up. */
4818 htab
->plt_type
= PLT_OLD
;
4823 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
4825 /* Look through the reloc flags left by ppc_elf_check_relocs.
4826 Use the old style bss plt if a file makes plt calls
4827 without using the new relocs, and if ld isn't given
4828 --secure-plt and we never see REL16 relocs. */
4829 if (plt_type
== PLT_UNSET
)
4831 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
4832 if (is_ppc_elf (ibfd
))
4834 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4836 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
4839 htab
->old_bfd
= ibfd
;
4843 htab
->plt_type
= plt_type
;
4846 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
4848 if (htab
->old_bfd
!= NULL
)
4849 info
->callbacks
->einfo (_("%P: bss-plt forced due to %B\n"),
4852 info
->callbacks
->einfo (_("%P: bss-plt forced by profiling\n"));
4855 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
4857 if (htab
->plt_type
== PLT_NEW
)
4859 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
4860 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4862 /* The new PLT is a loaded section. */
4863 if (htab
->plt
!= NULL
4864 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
4867 /* The new GOT is not executable. */
4868 if (htab
->got
!= NULL
4869 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
4874 /* Stop an unused .glink section from affecting .text alignment. */
4875 if (htab
->glink
!= NULL
4876 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
4879 return htab
->plt_type
== PLT_NEW
;
4882 /* Return the section that should be marked against GC for a given
4886 ppc_elf_gc_mark_hook (asection
*sec
,
4887 struct bfd_link_info
*info
,
4888 Elf_Internal_Rela
*rel
,
4889 struct elf_link_hash_entry
*h
,
4890 Elf_Internal_Sym
*sym
)
4893 switch (ELF32_R_TYPE (rel
->r_info
))
4895 case R_PPC_GNU_VTINHERIT
:
4896 case R_PPC_GNU_VTENTRY
:
4900 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
4903 /* Update the got, plt and dynamic reloc reference counts for the
4904 section being removed. */
4907 ppc_elf_gc_sweep_hook (bfd
*abfd
,
4908 struct bfd_link_info
*info
,
4910 const Elf_Internal_Rela
*relocs
)
4912 struct ppc_elf_link_hash_table
*htab
;
4913 Elf_Internal_Shdr
*symtab_hdr
;
4914 struct elf_link_hash_entry
**sym_hashes
;
4915 bfd_signed_vma
*local_got_refcounts
;
4916 const Elf_Internal_Rela
*rel
, *relend
;
4919 if (info
->relocatable
)
4922 if ((sec
->flags
& SEC_ALLOC
) == 0)
4925 elf_section_data (sec
)->local_dynrel
= NULL
;
4927 htab
= ppc_elf_hash_table (info
);
4928 symtab_hdr
= &elf_symtab_hdr (abfd
);
4929 sym_hashes
= elf_sym_hashes (abfd
);
4930 local_got_refcounts
= elf_local_got_refcounts (abfd
);
4931 got2
= bfd_get_section_by_name (abfd
, ".got2");
4933 relend
= relocs
+ sec
->reloc_count
;
4934 for (rel
= relocs
; rel
< relend
; rel
++)
4936 unsigned long r_symndx
;
4937 enum elf_ppc_reloc_type r_type
;
4938 struct elf_link_hash_entry
*h
= NULL
;
4940 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4941 if (r_symndx
>= symtab_hdr
->sh_info
)
4943 struct elf_dyn_relocs
**pp
, *p
;
4944 struct ppc_elf_link_hash_entry
*eh
;
4946 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4947 while (h
->root
.type
== bfd_link_hash_indirect
4948 || h
->root
.type
== bfd_link_hash_warning
)
4949 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4950 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4952 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4955 /* Everything must go for SEC. */
4961 r_type
= ELF32_R_TYPE (rel
->r_info
);
4962 if (!htab
->is_vxworks
4964 && local_got_refcounts
!= NULL
4966 || is_branch_reloc (r_type
)))
4968 struct plt_entry
**local_plt
= (struct plt_entry
**)
4969 (local_got_refcounts
+ symtab_hdr
->sh_info
);
4970 char *local_got_tls_masks
= (char *)
4971 (local_plt
+ symtab_hdr
->sh_info
);
4972 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
4974 struct plt_entry
**ifunc
= local_plt
+ r_symndx
;
4976 struct plt_entry
*ent
;
4978 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
4979 addend
= rel
->r_addend
;
4980 ent
= find_plt_ent (ifunc
, got2
, addend
);
4981 if (ent
->plt
.refcount
> 0)
4982 ent
->plt
.refcount
-= 1;
4989 case R_PPC_GOT_TLSLD16
:
4990 case R_PPC_GOT_TLSLD16_LO
:
4991 case R_PPC_GOT_TLSLD16_HI
:
4992 case R_PPC_GOT_TLSLD16_HA
:
4993 case R_PPC_GOT_TLSGD16
:
4994 case R_PPC_GOT_TLSGD16_LO
:
4995 case R_PPC_GOT_TLSGD16_HI
:
4996 case R_PPC_GOT_TLSGD16_HA
:
4997 case R_PPC_GOT_TPREL16
:
4998 case R_PPC_GOT_TPREL16_LO
:
4999 case R_PPC_GOT_TPREL16_HI
:
5000 case R_PPC_GOT_TPREL16_HA
:
5001 case R_PPC_GOT_DTPREL16
:
5002 case R_PPC_GOT_DTPREL16_LO
:
5003 case R_PPC_GOT_DTPREL16_HI
:
5004 case R_PPC_GOT_DTPREL16_HA
:
5006 case R_PPC_GOT16_LO
:
5007 case R_PPC_GOT16_HI
:
5008 case R_PPC_GOT16_HA
:
5011 if (h
->got
.refcount
> 0)
5015 struct plt_entry
*ent
;
5017 ent
= find_plt_ent (&h
->plt
.plist
, NULL
, 0);
5018 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5019 ent
->plt
.refcount
-= 1;
5022 else if (local_got_refcounts
!= NULL
)
5024 if (local_got_refcounts
[r_symndx
] > 0)
5025 local_got_refcounts
[r_symndx
]--;
5031 case R_PPC_REL14_BRTAKEN
:
5032 case R_PPC_REL14_BRNTAKEN
:
5034 if (h
== NULL
|| h
== htab
->elf
.hgot
)
5041 case R_PPC_ADDR16_LO
:
5042 case R_PPC_ADDR16_HI
:
5043 case R_PPC_ADDR16_HA
:
5045 case R_PPC_ADDR14_BRTAKEN
:
5046 case R_PPC_ADDR14_BRNTAKEN
:
5053 case R_PPC_PLTREL24
:
5054 case R_PPC_PLTREL32
:
5055 case R_PPC_PLT16_LO
:
5056 case R_PPC_PLT16_HI
:
5057 case R_PPC_PLT16_HA
:
5061 struct plt_entry
*ent
;
5063 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
5064 addend
= rel
->r_addend
;
5065 ent
= find_plt_ent (&h
->plt
.plist
, got2
, addend
);
5066 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5067 ent
->plt
.refcount
-= 1;
5078 /* Set plt output section type, htab->tls_get_addr, and call the
5079 generic ELF tls_setup function. */
5082 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5084 struct ppc_elf_link_hash_table
*htab
;
5086 htab
= ppc_elf_hash_table (info
);
5087 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5088 FALSE
, FALSE
, TRUE
);
5089 if (!htab
->params
->no_tls_get_addr_opt
)
5091 struct elf_link_hash_entry
*opt
, *tga
;
5092 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5093 FALSE
, FALSE
, TRUE
);
5095 && (opt
->root
.type
== bfd_link_hash_defined
5096 || opt
->root
.type
== bfd_link_hash_defweak
))
5098 /* If glibc supports an optimized __tls_get_addr call stub,
5099 signalled by the presence of __tls_get_addr_opt, and we'll
5100 be calling __tls_get_addr via a plt call stub, then
5101 make __tls_get_addr point to __tls_get_addr_opt. */
5102 tga
= htab
->tls_get_addr
;
5103 if (htab
->elf
.dynamic_sections_created
5105 && (tga
->type
== STT_FUNC
5107 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5108 || (ELF_ST_VISIBILITY (tga
->other
) != STV_DEFAULT
5109 && tga
->root
.type
== bfd_link_hash_undefweak
)))
5111 struct plt_entry
*ent
;
5112 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5113 if (ent
->plt
.refcount
> 0)
5117 tga
->root
.type
= bfd_link_hash_indirect
;
5118 tga
->root
.u
.i
.link
= &opt
->root
;
5119 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5120 if (opt
->dynindx
!= -1)
5122 /* Use __tls_get_addr_opt in dynamic relocations. */
5124 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5126 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5129 htab
->tls_get_addr
= opt
;
5134 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5136 if (htab
->plt_type
== PLT_NEW
5137 && htab
->plt
!= NULL
5138 && htab
->plt
->output_section
!= NULL
)
5140 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
5141 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5144 return _bfd_elf_tls_setup (obfd
, info
);
5147 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5151 branch_reloc_hash_match (const bfd
*ibfd
,
5152 const Elf_Internal_Rela
*rel
,
5153 const struct elf_link_hash_entry
*hash
)
5155 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5156 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5157 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5159 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5161 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5162 struct elf_link_hash_entry
*h
;
5164 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5165 while (h
->root
.type
== bfd_link_hash_indirect
5166 || h
->root
.type
== bfd_link_hash_warning
)
5167 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5174 /* Run through all the TLS relocs looking for optimization
5178 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5179 struct bfd_link_info
*info
)
5183 struct ppc_elf_link_hash_table
*htab
;
5186 if (info
->relocatable
|| !info
->executable
)
5189 htab
= ppc_elf_hash_table (info
);
5193 /* Make two passes through the relocs. First time check that tls
5194 relocs involved in setting up a tls_get_addr call are indeed
5195 followed by such a call. If they are not, don't do any tls
5196 optimization. On the second pass twiddle tls_mask flags to
5197 notify relocate_section that optimization can be done, and
5198 adjust got and plt refcounts. */
5199 for (pass
= 0; pass
< 2; ++pass
)
5200 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
5202 Elf_Internal_Sym
*locsyms
= NULL
;
5203 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5204 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5206 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5207 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5209 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5210 int expecting_tls_get_addr
= 0;
5212 /* Read the relocations. */
5213 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5215 if (relstart
== NULL
)
5218 relend
= relstart
+ sec
->reloc_count
;
5219 for (rel
= relstart
; rel
< relend
; rel
++)
5221 enum elf_ppc_reloc_type r_type
;
5222 unsigned long r_symndx
;
5223 struct elf_link_hash_entry
*h
= NULL
;
5225 char tls_set
, tls_clear
;
5226 bfd_boolean is_local
;
5227 bfd_signed_vma
*got_count
;
5229 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5230 if (r_symndx
>= symtab_hdr
->sh_info
)
5232 struct elf_link_hash_entry
**sym_hashes
;
5234 sym_hashes
= elf_sym_hashes (ibfd
);
5235 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5236 while (h
->root
.type
== bfd_link_hash_indirect
5237 || h
->root
.type
== bfd_link_hash_warning
)
5238 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5246 r_type
= ELF32_R_TYPE (rel
->r_info
);
5247 /* If this section has old-style __tls_get_addr calls
5248 without marker relocs, then check that each
5249 __tls_get_addr call reloc is preceded by a reloc
5250 that conceivably belongs to the __tls_get_addr arg
5251 setup insn. If we don't find matching arg setup
5252 relocs, don't do any tls optimization. */
5254 && sec
->has_tls_get_addr_call
5256 && h
== htab
->tls_get_addr
5257 && !expecting_tls_get_addr
5258 && is_branch_reloc (r_type
))
5260 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5261 "TLS optimization disabled\n",
5262 ibfd
, sec
, rel
->r_offset
);
5263 if (elf_section_data (sec
)->relocs
!= relstart
)
5268 expecting_tls_get_addr
= 0;
5271 case R_PPC_GOT_TLSLD16
:
5272 case R_PPC_GOT_TLSLD16_LO
:
5273 expecting_tls_get_addr
= 1;
5276 case R_PPC_GOT_TLSLD16_HI
:
5277 case R_PPC_GOT_TLSLD16_HA
:
5278 /* These relocs should never be against a symbol
5279 defined in a shared lib. Leave them alone if
5280 that turns out to be the case. */
5289 case R_PPC_GOT_TLSGD16
:
5290 case R_PPC_GOT_TLSGD16_LO
:
5291 expecting_tls_get_addr
= 1;
5294 case R_PPC_GOT_TLSGD16_HI
:
5295 case R_PPC_GOT_TLSGD16_HA
:
5301 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5305 case R_PPC_GOT_TPREL16
:
5306 case R_PPC_GOT_TPREL16_LO
:
5307 case R_PPC_GOT_TPREL16_HI
:
5308 case R_PPC_GOT_TPREL16_HA
:
5313 tls_clear
= TLS_TPREL
;
5321 expecting_tls_get_addr
= 2;
5332 if (!expecting_tls_get_addr
5333 || (expecting_tls_get_addr
== 1
5334 && !sec
->has_tls_get_addr_call
))
5337 if (rel
+ 1 < relend
5338 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5339 htab
->tls_get_addr
))
5342 /* Uh oh, we didn't find the expected call. We
5343 could just mark this symbol to exclude it
5344 from tls optimization but it's safer to skip
5345 the entire optimization. */
5346 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5347 "TLS optimization disabled\n"),
5348 ibfd
, sec
, rel
->r_offset
);
5349 if (elf_section_data (sec
)->relocs
!= relstart
)
5354 if (expecting_tls_get_addr
)
5356 struct plt_entry
*ent
;
5360 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5361 addend
= rel
[1].r_addend
;
5362 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5364 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5365 ent
->plt
.refcount
-= 1;
5367 if (expecting_tls_get_addr
== 2)
5373 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5374 got_count
= &h
->got
.refcount
;
5378 bfd_signed_vma
*lgot_refs
;
5379 struct plt_entry
**local_plt
;
5382 if (locsyms
== NULL
)
5384 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5385 if (locsyms
== NULL
)
5386 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5387 symtab_hdr
->sh_info
,
5388 0, NULL
, NULL
, NULL
);
5389 if (locsyms
== NULL
)
5391 if (elf_section_data (sec
)->relocs
!= relstart
)
5396 lgot_refs
= elf_local_got_refcounts (ibfd
);
5397 if (lgot_refs
== NULL
)
5399 local_plt
= (struct plt_entry
**)
5400 (lgot_refs
+ symtab_hdr
->sh_info
);
5401 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
5402 tls_mask
= &lgot_masks
[r_symndx
];
5403 got_count
= &lgot_refs
[r_symndx
];
5408 /* We managed to get rid of a got entry. */
5413 *tls_mask
|= tls_set
;
5414 *tls_mask
&= ~tls_clear
;
5417 if (elf_section_data (sec
)->relocs
!= relstart
)
5422 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
5424 if (!info
->keep_memory
)
5427 symtab_hdr
->contents
= (unsigned char *) locsyms
;
5433 /* Return true if we have dynamic relocs that apply to read-only sections. */
5436 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5438 struct elf_dyn_relocs
*p
;
5440 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5442 asection
*s
= p
->sec
->output_section
;
5445 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
5446 == (SEC_READONLY
| SEC_ALLOC
)))
5452 /* Adjust a symbol defined by a dynamic object and referenced by a
5453 regular object. The current definition is in some section of the
5454 dynamic object, but we're not including those sections. We have to
5455 change the definition to something the rest of the link can
5459 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5460 struct elf_link_hash_entry
*h
)
5462 struct ppc_elf_link_hash_table
*htab
;
5466 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5467 h
->root
.root
.string
);
5470 /* Make sure we know what is going on here. */
5471 htab
= ppc_elf_hash_table (info
);
5472 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5474 || h
->type
== STT_GNU_IFUNC
5475 || h
->u
.weakdef
!= NULL
5478 && !h
->def_regular
)));
5480 /* Deal with function syms. */
5481 if (h
->type
== STT_FUNC
5482 || h
->type
== STT_GNU_IFUNC
5485 /* Clear procedure linkage table information for any symbol that
5486 won't need a .plt entry. */
5487 struct plt_entry
*ent
;
5488 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5489 if (ent
->plt
.refcount
> 0)
5492 || (h
->type
!= STT_GNU_IFUNC
5493 && (SYMBOL_CALLS_LOCAL (info
, h
)
5494 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5495 && h
->root
.type
== bfd_link_hash_undefweak
))))
5497 /* A PLT entry is not required/allowed when:
5499 1. We are not using ld.so; because then the PLT entry
5500 can't be set up, so we can't use one. In this case,
5501 ppc_elf_adjust_dynamic_symbol won't even be called.
5503 2. GC has rendered the entry unused.
5505 3. We know for certain that a call to this symbol
5506 will go to this object, or will remain undefined. */
5507 h
->plt
.plist
= NULL
;
5509 h
->pointer_equality_needed
= 0;
5513 /* Taking a function's address in a read/write section
5514 doesn't require us to define the function symbol in the
5515 executable on a plt call stub. A dynamic reloc can
5517 if (h
->pointer_equality_needed
5518 && h
->type
!= STT_GNU_IFUNC
5519 && !htab
->is_vxworks
5520 && !ppc_elf_hash_entry (h
)->has_sda_refs
5521 && !readonly_dynrelocs (h
))
5523 h
->pointer_equality_needed
= 0;
5527 /* After adjust_dynamic_symbol, non_got_ref set in the
5528 non-shared case means that we have allocated space in
5529 .dynbss for the symbol and thus dyn_relocs for this
5530 symbol should be discarded.
5531 If we get here we know we are making a PLT entry for this
5532 symbol, and in an executable we'd normally resolve
5533 relocations against this symbol to the PLT entry. Allow
5534 dynamic relocs if the reference is weak, and the dynamic
5535 relocs will not cause text relocation. */
5536 else if (!h
->ref_regular_nonweak
5538 && h
->type
!= STT_GNU_IFUNC
5539 && !htab
->is_vxworks
5540 && !ppc_elf_hash_entry (h
)->has_sda_refs
5541 && !readonly_dynrelocs (h
))
5547 h
->plt
.plist
= NULL
;
5549 /* If this is a weak symbol, and there is a real definition, the
5550 processor independent code will have arranged for us to see the
5551 real definition first, and we can just use the same value. */
5552 if (h
->u
.weakdef
!= NULL
)
5554 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5555 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5556 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5557 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5558 if (ELIMINATE_COPY_RELOCS
)
5559 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5563 /* This is a reference to a symbol defined by a dynamic object which
5564 is not a function. */
5566 /* If we are creating a shared library, we must presume that the
5567 only references to the symbol are via the global offset table.
5568 For such cases we need not do anything here; the relocations will
5569 be handled correctly by relocate_section. */
5573 /* If there are no references to this symbol that do not use the
5574 GOT, we don't need to generate a copy reloc. */
5575 if (!h
->non_got_ref
)
5578 /* If we didn't find any dynamic relocs in read-only sections, then
5579 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5580 We can't do this if there are any small data relocations. This
5581 doesn't work on VxWorks, where we can not have dynamic
5582 relocations (other than copy and jump slot relocations) in an
5584 if (ELIMINATE_COPY_RELOCS
5585 && !ppc_elf_hash_entry (h
)->has_sda_refs
5586 && !htab
->is_vxworks
5588 && !readonly_dynrelocs (h
))
5594 /* We must allocate the symbol in our .dynbss section, which will
5595 become part of the .bss section of the executable. There will be
5596 an entry for this symbol in the .dynsym section. The dynamic
5597 object will contain position independent code, so all references
5598 from the dynamic object to this symbol will go through the global
5599 offset table. The dynamic linker will use the .dynsym entry to
5600 determine the address it must put in the global offset table, so
5601 both the dynamic object and the regular object will refer to the
5602 same memory location for the variable.
5604 Of course, if the symbol is referenced using SDAREL relocs, we
5605 must instead allocate it in .sbss. */
5607 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5611 BFD_ASSERT (s
!= NULL
);
5613 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5614 copy the initial value out of the dynamic object and into the
5615 runtime process image. We need to remember the offset into the
5616 .rela.bss section we are going to use. */
5617 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5621 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5622 srel
= htab
->relsbss
;
5624 srel
= htab
->relbss
;
5625 BFD_ASSERT (srel
!= NULL
);
5626 srel
->size
+= sizeof (Elf32_External_Rela
);
5630 return _bfd_elf_adjust_dynamic_copy (h
, s
);
5633 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5634 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5635 specifying the addend on the plt relocation. For -fpic code, the sym
5636 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5637 xxxxxxxx.got2.plt_pic32.<callee>. */
5640 add_stub_sym (struct plt_entry
*ent
,
5641 struct elf_link_hash_entry
*h
,
5642 struct bfd_link_info
*info
)
5644 struct elf_link_hash_entry
*sh
;
5645 size_t len1
, len2
, len3
;
5648 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5651 stub
= ".plt_pic32.";
5653 stub
= ".plt_call32.";
5655 len1
= strlen (h
->root
.root
.string
);
5656 len2
= strlen (stub
);
5659 len3
= strlen (ent
->sec
->name
);
5660 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5663 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5665 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5666 memcpy (name
+ 8 + len3
, stub
, len2
);
5667 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5668 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5671 if (sh
->root
.type
== bfd_link_hash_new
)
5673 sh
->root
.type
= bfd_link_hash_defined
;
5674 sh
->root
.u
.def
.section
= htab
->glink
;
5675 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5676 sh
->ref_regular
= 1;
5677 sh
->def_regular
= 1;
5678 sh
->ref_regular_nonweak
= 1;
5679 sh
->forced_local
= 1;
5685 /* Allocate NEED contiguous space in .got, and return the offset.
5686 Handles allocation of the got header when crossing 32k. */
5689 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5692 unsigned int max_before_header
;
5694 if (htab
->plt_type
== PLT_VXWORKS
)
5696 where
= htab
->got
->size
;
5697 htab
->got
->size
+= need
;
5701 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5702 if (need
<= htab
->got_gap
)
5704 where
= max_before_header
- htab
->got_gap
;
5705 htab
->got_gap
-= need
;
5709 if (htab
->got
->size
+ need
> max_before_header
5710 && htab
->got
->size
<= max_before_header
)
5712 htab
->got_gap
= max_before_header
- htab
->got
->size
;
5713 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
5715 where
= htab
->got
->size
;
5716 htab
->got
->size
+= need
;
5722 /* Allocate space in associated reloc sections for dynamic relocs. */
5725 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5727 struct bfd_link_info
*info
= inf
;
5728 struct ppc_elf_link_hash_entry
*eh
;
5729 struct ppc_elf_link_hash_table
*htab
;
5730 struct elf_dyn_relocs
*p
;
5732 if (h
->root
.type
== bfd_link_hash_indirect
)
5735 htab
= ppc_elf_hash_table (info
);
5736 if (htab
->elf
.dynamic_sections_created
5737 || h
->type
== STT_GNU_IFUNC
)
5739 struct plt_entry
*ent
;
5740 bfd_boolean doneone
= FALSE
;
5741 bfd_vma plt_offset
= 0, glink_offset
= 0;
5744 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5745 if (ent
->plt
.refcount
> 0)
5747 /* Make sure this symbol is output as a dynamic symbol. */
5748 if (h
->dynindx
== -1
5751 && htab
->elf
.dynamic_sections_created
)
5753 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5757 dyn
= htab
->elf
.dynamic_sections_created
;
5759 || h
->type
== STT_GNU_IFUNC
5760 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
5762 asection
*s
= htab
->plt
;
5763 if (!dyn
|| h
->dynindx
== -1)
5766 if (htab
->plt_type
== PLT_NEW
|| !dyn
|| h
->dynindx
== -1)
5770 plt_offset
= s
->size
;
5773 ent
->plt
.offset
= plt_offset
;
5776 if (!doneone
|| info
->shared
)
5778 glink_offset
= s
->size
;
5779 s
->size
+= GLINK_ENTRY_SIZE
;
5780 if (h
== htab
->tls_get_addr
5781 && !htab
->params
->no_tls_get_addr_opt
)
5782 s
->size
+= TLS_GET_ADDR_GLINK_SIZE
- GLINK_ENTRY_SIZE
;
5789 h
->root
.u
.def
.section
= s
;
5790 h
->root
.u
.def
.value
= glink_offset
;
5792 ent
->glink_offset
= glink_offset
;
5794 if (htab
->params
->emit_stub_syms
5795 && !add_stub_sym (ent
, h
, info
))
5802 /* If this is the first .plt entry, make room
5803 for the special first entry. */
5805 s
->size
+= htab
->plt_initial_entry_size
;
5807 /* The PowerPC PLT is actually composed of two
5808 parts, the first part is 2 words (for a load
5809 and a jump), and then there is a remaining
5810 word available at the end. */
5811 plt_offset
= (htab
->plt_initial_entry_size
5812 + (htab
->plt_slot_size
5814 - htab
->plt_initial_entry_size
)
5815 / htab
->plt_entry_size
)));
5817 /* If this symbol is not defined in a regular
5818 file, and we are not generating a shared
5819 library, then set the symbol to this location
5820 in the .plt. This is to avoid text
5821 relocations, and is required to make
5822 function pointers compare as equal between
5823 the normal executable and the shared library. */
5828 h
->root
.u
.def
.section
= s
;
5829 h
->root
.u
.def
.value
= plt_offset
;
5832 /* Make room for this entry. */
5833 s
->size
+= htab
->plt_entry_size
;
5834 /* After the 8192nd entry, room for two entries
5836 if (htab
->plt_type
== PLT_OLD
5837 && (s
->size
- htab
->plt_initial_entry_size
)
5838 / htab
->plt_entry_size
5839 > PLT_NUM_SINGLE_ENTRIES
)
5840 s
->size
+= htab
->plt_entry_size
;
5842 ent
->plt
.offset
= plt_offset
;
5845 /* We also need to make an entry in the .rela.plt section. */
5848 if (!htab
->elf
.dynamic_sections_created
5849 || h
->dynindx
== -1)
5850 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
5853 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
5855 if (htab
->plt_type
== PLT_VXWORKS
)
5857 /* Allocate space for the unloaded relocations. */
5859 && htab
->elf
.dynamic_sections_created
)
5862 == (bfd_vma
) htab
->plt_initial_entry_size
)
5864 htab
->srelplt2
->size
5865 += (sizeof (Elf32_External_Rela
)
5866 * VXWORKS_PLTRESOLVE_RELOCS
);
5869 htab
->srelplt2
->size
5870 += (sizeof (Elf32_External_Rela
)
5871 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
5874 /* Every PLT entry has an associated GOT entry in
5876 htab
->sgotplt
->size
+= 4;
5883 ent
->plt
.offset
= (bfd_vma
) -1;
5886 ent
->plt
.offset
= (bfd_vma
) -1;
5890 h
->plt
.plist
= NULL
;
5896 h
->plt
.plist
= NULL
;
5900 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5901 if (eh
->elf
.got
.refcount
> 0)
5906 /* Make sure this symbol is output as a dynamic symbol. */
5907 if (eh
->elf
.dynindx
== -1
5908 && !eh
->elf
.forced_local
5909 && eh
->elf
.type
!= STT_GNU_IFUNC
5910 && htab
->elf
.dynamic_sections_created
)
5912 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
5917 if ((eh
->tls_mask
& TLS_TLS
) != 0)
5919 if ((eh
->tls_mask
& TLS_LD
) != 0)
5921 if (!eh
->elf
.def_dynamic
)
5922 /* We'll just use htab->tlsld_got.offset. This should
5923 always be the case. It's a little odd if we have
5924 a local dynamic reloc against a non-local symbol. */
5925 htab
->tlsld_got
.refcount
+= 1;
5929 if ((eh
->tls_mask
& TLS_GD
) != 0)
5931 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5933 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
5939 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5942 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5943 dyn
= htab
->elf
.dynamic_sections_created
;
5945 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
5946 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
5947 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
5949 asection
*rsec
= htab
->relgot
;
5951 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5952 rsec
= htab
->reliplt
;
5953 /* All the entries we allocated need relocs.
5954 Except LD only needs one. */
5955 if ((eh
->tls_mask
& TLS_LD
) != 0
5956 && eh
->elf
.def_dynamic
)
5958 rsec
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
5963 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5965 if (eh
->dyn_relocs
== NULL
5966 || !htab
->elf
.dynamic_sections_created
)
5969 /* In the shared -Bsymbolic case, discard space allocated for
5970 dynamic pc-relative relocs against symbols which turn out to be
5971 defined in regular objects. For the normal shared case, discard
5972 space for relocs that have become local due to symbol visibility
5977 /* Relocs that use pc_count are those that appear on a call insn,
5978 or certain REL relocs (see must_be_dyn_reloc) that can be
5979 generated via assembly. We want calls to protected symbols to
5980 resolve directly to the function rather than going via the plt.
5981 If people want function pointer comparisons to work as expected
5982 then they should avoid writing weird assembly. */
5983 if (SYMBOL_CALLS_LOCAL (info
, h
))
5985 struct elf_dyn_relocs
**pp
;
5987 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5989 p
->count
-= p
->pc_count
;
5998 if (htab
->is_vxworks
)
6000 struct elf_dyn_relocs
**pp
;
6002 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6004 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
6011 /* Discard relocs on undefined symbols that must be local. */
6012 if (eh
->dyn_relocs
!= NULL
6013 && h
->root
.type
== bfd_link_hash_undefined
6014 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
6015 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
6016 eh
->dyn_relocs
= NULL
;
6018 /* Also discard relocs on undefined weak syms with non-default
6020 if (eh
->dyn_relocs
!= NULL
6021 && h
->root
.type
== bfd_link_hash_undefweak
)
6023 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
6024 eh
->dyn_relocs
= NULL
;
6026 /* Make sure undefined weak symbols are output as a dynamic
6028 else if (h
->dynindx
== -1
6032 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6037 else if (ELIMINATE_COPY_RELOCS
)
6039 /* For the non-shared case, discard space for relocs against
6040 symbols which turn out to need copy relocs or are not
6046 /* Make sure this symbol is output as a dynamic symbol.
6047 Undefined weak syms won't yet be marked as dynamic. */
6048 if (h
->dynindx
== -1
6049 && !h
->forced_local
)
6051 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6055 /* If that succeeded, we know we'll be keeping all the
6057 if (h
->dynindx
!= -1)
6061 eh
->dyn_relocs
= NULL
;
6066 /* Finally, allocate space. */
6067 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6069 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6070 if (eh
->elf
.type
== STT_GNU_IFUNC
)
6071 sreloc
= htab
->reliplt
;
6072 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6078 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6079 read-only sections. */
6082 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
6084 if (h
->root
.type
== bfd_link_hash_indirect
)
6087 if (readonly_dynrelocs (h
))
6089 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
6091 /* Not an error, just cut short the traversal. */
6097 static const unsigned char glink_eh_frame_cie
[] =
6099 0, 0, 0, 16, /* length. */
6100 0, 0, 0, 0, /* id. */
6101 1, /* CIE version. */
6102 'z', 'R', 0, /* Augmentation string. */
6103 4, /* Code alignment. */
6104 0x7c, /* Data alignment. */
6106 1, /* Augmentation size. */
6107 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6108 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6111 /* Set the sizes of the dynamic sections. */
6114 ppc_elf_size_dynamic_sections (bfd
*output_bfd
,
6115 struct bfd_link_info
*info
)
6117 struct ppc_elf_link_hash_table
*htab
;
6123 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6126 htab
= ppc_elf_hash_table (info
);
6127 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6129 if (elf_hash_table (info
)->dynamic_sections_created
)
6131 /* Set the contents of the .interp section to the interpreter. */
6132 if (info
->executable
)
6134 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6135 BFD_ASSERT (s
!= NULL
);
6136 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6137 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6141 if (htab
->plt_type
== PLT_OLD
)
6142 htab
->got_header_size
= 16;
6143 else if (htab
->plt_type
== PLT_NEW
)
6144 htab
->got_header_size
= 12;
6146 /* Set up .got offsets for local syms, and space for local dynamic
6148 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
6150 bfd_signed_vma
*local_got
;
6151 bfd_signed_vma
*end_local_got
;
6152 struct plt_entry
**local_plt
;
6153 struct plt_entry
**end_local_plt
;
6155 bfd_size_type locsymcount
;
6156 Elf_Internal_Shdr
*symtab_hdr
;
6158 if (!is_ppc_elf (ibfd
))
6161 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6163 struct ppc_dyn_relocs
*p
;
6165 for (p
= ((struct ppc_dyn_relocs
*)
6166 elf_section_data (s
)->local_dynrel
);
6170 if (!bfd_is_abs_section (p
->sec
)
6171 && bfd_is_abs_section (p
->sec
->output_section
))
6173 /* Input section has been discarded, either because
6174 it is a copy of a linkonce section or due to
6175 linker script /DISCARD/, so we'll be discarding
6178 else if (htab
->is_vxworks
6179 && strcmp (p
->sec
->output_section
->name
,
6182 /* Relocations in vxworks .tls_vars sections are
6183 handled specially by the loader. */
6185 else if (p
->count
!= 0)
6187 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6189 sreloc
= htab
->reliplt
;
6190 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6191 if ((p
->sec
->output_section
->flags
6192 & (SEC_READONLY
| SEC_ALLOC
))
6193 == (SEC_READONLY
| SEC_ALLOC
))
6194 info
->flags
|= DF_TEXTREL
;
6199 local_got
= elf_local_got_refcounts (ibfd
);
6203 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6204 locsymcount
= symtab_hdr
->sh_info
;
6205 end_local_got
= local_got
+ locsymcount
;
6206 local_plt
= (struct plt_entry
**) end_local_got
;
6207 end_local_plt
= local_plt
+ locsymcount
;
6208 lgot_masks
= (char *) end_local_plt
;
6210 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6213 unsigned int need
= 0;
6214 if ((*lgot_masks
& TLS_TLS
) != 0)
6216 if ((*lgot_masks
& TLS_GD
) != 0)
6218 if ((*lgot_masks
& TLS_LD
) != 0)
6219 htab
->tlsld_got
.refcount
+= 1;
6220 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6222 if ((*lgot_masks
& TLS_DTPREL
) != 0)
6228 *local_got
= (bfd_vma
) -1;
6231 *local_got
= allocate_got (htab
, need
);
6234 asection
*srel
= htab
->relgot
;
6235 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6236 srel
= htab
->reliplt
;
6237 srel
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
6242 *local_got
= (bfd_vma
) -1;
6244 if (htab
->is_vxworks
)
6247 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6248 for (; local_plt
< end_local_plt
; ++local_plt
)
6250 struct plt_entry
*ent
;
6251 bfd_boolean doneone
= FALSE
;
6252 bfd_vma plt_offset
= 0, glink_offset
= 0;
6254 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6255 if (ent
->plt
.refcount
> 0)
6261 plt_offset
= s
->size
;
6264 ent
->plt
.offset
= plt_offset
;
6267 if (!doneone
|| info
->shared
)
6269 glink_offset
= s
->size
;
6270 s
->size
+= GLINK_ENTRY_SIZE
;
6272 ent
->glink_offset
= glink_offset
;
6276 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
6281 ent
->plt
.offset
= (bfd_vma
) -1;
6285 /* Allocate space for global sym dynamic relocs. */
6286 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6288 if (htab
->tlsld_got
.refcount
> 0)
6290 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6292 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
6295 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6297 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6299 unsigned int g_o_t
= 32768;
6301 /* If we haven't allocated the header, do so now. When we get here,
6302 for old plt/got the got size will be 0 to 32764 (not allocated),
6303 or 32780 to 65536 (header allocated). For new plt/got, the
6304 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6305 if (htab
->got
->size
<= 32768)
6307 g_o_t
= htab
->got
->size
;
6308 if (htab
->plt_type
== PLT_OLD
)
6310 htab
->got
->size
+= htab
->got_header_size
;
6313 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6317 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6319 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6320 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6322 if (info
->emitrelocations
)
6324 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6326 if (sda
!= NULL
&& sda
->ref_regular
)
6327 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6328 sda
= htab
->sdata
[1].sym
;
6329 if (sda
!= NULL
&& sda
->ref_regular
)
6330 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6333 if (htab
->glink
!= NULL
6334 && htab
->glink
->size
!= 0
6335 && htab
->elf
.dynamic_sections_created
)
6337 htab
->glink_pltresolve
= htab
->glink
->size
;
6338 /* Space for the branch table. */
6339 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
6340 /* Pad out to align the start of PLTresolve. */
6341 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6343 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6345 if (htab
->params
->emit_stub_syms
)
6347 struct elf_link_hash_entry
*sh
;
6348 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6349 TRUE
, FALSE
, FALSE
);
6352 if (sh
->root
.type
== bfd_link_hash_new
)
6354 sh
->root
.type
= bfd_link_hash_defined
;
6355 sh
->root
.u
.def
.section
= htab
->glink
;
6356 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6357 sh
->ref_regular
= 1;
6358 sh
->def_regular
= 1;
6359 sh
->ref_regular_nonweak
= 1;
6360 sh
->forced_local
= 1;
6363 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6364 TRUE
, FALSE
, FALSE
);
6367 if (sh
->root
.type
== bfd_link_hash_new
)
6369 sh
->root
.type
= bfd_link_hash_defined
;
6370 sh
->root
.u
.def
.section
= htab
->glink
;
6371 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6372 sh
->ref_regular
= 1;
6373 sh
->def_regular
= 1;
6374 sh
->ref_regular_nonweak
= 1;
6375 sh
->forced_local
= 1;
6381 if (htab
->glink
!= NULL
6382 && htab
->glink
->size
!= 0
6383 && htab
->glink_eh_frame
!= NULL
6384 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6385 && _bfd_elf_eh_frame_present (info
))
6387 s
= htab
->glink_eh_frame
;
6388 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6392 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6397 /* We've now determined the sizes of the various dynamic sections.
6398 Allocate memory for them. */
6400 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6402 bfd_boolean strip_section
= TRUE
;
6404 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6410 /* We'd like to strip these sections if they aren't needed, but if
6411 we've exported dynamic symbols from them we must leave them.
6412 It's too late to tell BFD to get rid of the symbols. */
6413 if (htab
->elf
.hplt
!= NULL
)
6414 strip_section
= FALSE
;
6415 /* Strip this section if we don't need it; see the
6418 else if (s
== htab
->iplt
6420 || s
== htab
->glink_eh_frame
6421 || s
== htab
->sgotplt
6423 || s
== htab
->dynbss
6424 || s
== htab
->dynsbss
)
6426 /* Strip these too. */
6428 else if (s
== htab
->sdata
[0].section
6429 || s
== htab
->sdata
[1].section
)
6431 strip_section
= (s
->flags
& SEC_KEEP
) == 0;
6433 else if (CONST_STRNEQ (bfd_get_section_name (htab
->elf
.dynobj
, s
),
6438 /* Remember whether there are any relocation sections. */
6441 /* We use the reloc_count field as a counter if we need
6442 to copy relocs into the output file. */
6448 /* It's not one of our sections, so don't allocate space. */
6452 if (s
->size
== 0 && strip_section
)
6454 /* If we don't need this section, strip it from the
6455 output file. This is mostly to handle .rela.bss and
6456 .rela.plt. We must create both sections in
6457 create_dynamic_sections, because they must be created
6458 before the linker maps input sections to output
6459 sections. The linker does that before
6460 adjust_dynamic_symbol is called, and it is that
6461 function which decides whether anything needs to go
6462 into these sections. */
6463 s
->flags
|= SEC_EXCLUDE
;
6467 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
6470 /* Allocate memory for the section contents. */
6471 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
6472 if (s
->contents
== NULL
)
6476 if (htab
->elf
.dynamic_sections_created
)
6478 /* Add some entries to the .dynamic section. We fill in the
6479 values later, in ppc_elf_finish_dynamic_sections, but we
6480 must add the entries now so that we get the correct size for
6481 the .dynamic section. The DT_DEBUG entry is filled in by the
6482 dynamic linker and used by the debugger. */
6483 #define add_dynamic_entry(TAG, VAL) \
6484 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6486 if (info
->executable
)
6488 if (!add_dynamic_entry (DT_DEBUG
, 0))
6492 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
6494 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6495 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6496 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6497 || !add_dynamic_entry (DT_JMPREL
, 0))
6501 if (htab
->plt_type
== PLT_NEW
6502 && htab
->glink
!= NULL
6503 && htab
->glink
->size
!= 0)
6505 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
6507 if (!htab
->params
->no_tls_get_addr_opt
6508 && htab
->tls_get_addr
!= NULL
6509 && htab
->tls_get_addr
->plt
.plist
!= NULL
6510 && !add_dynamic_entry (DT_PPC_OPT
, PPC_OPT_TLS
))
6516 if (!add_dynamic_entry (DT_RELA
, 0)
6517 || !add_dynamic_entry (DT_RELASZ
, 0)
6518 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
6522 /* If any dynamic relocs apply to a read-only section, then we
6523 need a DT_TEXTREL entry. */
6524 if ((info
->flags
& DF_TEXTREL
) == 0)
6525 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
6528 if ((info
->flags
& DF_TEXTREL
) != 0)
6530 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6533 if (htab
->is_vxworks
6534 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
6537 #undef add_dynamic_entry
6539 if (htab
->glink_eh_frame
!= NULL
6540 && htab
->glink_eh_frame
->contents
!= NULL
)
6542 unsigned char *p
= htab
->glink_eh_frame
->contents
;
6545 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
6546 /* CIE length (rewrite in case little-endian). */
6547 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
6548 p
+= sizeof (glink_eh_frame_cie
);
6550 val
= htab
->glink_eh_frame
->size
- 4 - sizeof (glink_eh_frame_cie
);
6551 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6554 val
= p
- htab
->glink_eh_frame
->contents
;
6555 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6557 /* Offset to .glink. Set later. */
6560 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
, p
);
6566 && htab
->elf
.dynamic_sections_created
)
6568 bfd_vma adv
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8) >> 2;
6570 *p
++ = DW_CFA_advance_loc
+ adv
;
6573 *p
++ = DW_CFA_advance_loc1
;
6576 else if (adv
< 65536)
6578 *p
++ = DW_CFA_advance_loc2
;
6579 bfd_put_16 (htab
->elf
.dynobj
, adv
, p
);
6584 *p
++ = DW_CFA_advance_loc4
;
6585 bfd_put_32 (htab
->elf
.dynobj
, adv
, p
);
6588 *p
++ = DW_CFA_register
;
6591 *p
++ = DW_CFA_advance_loc
+ 4;
6592 *p
++ = DW_CFA_restore_extended
;
6595 BFD_ASSERT ((bfd_vma
) ((p
+ 3 - htab
->glink_eh_frame
->contents
) & -4)
6596 == htab
->glink_eh_frame
->size
);
6602 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6603 if it looks like nothing is using them. */
6606 maybe_strip_sdasym (bfd
*output_bfd
, elf_linker_section_t
*lsect
)
6608 struct elf_link_hash_entry
*sda
= lsect
->sym
;
6610 if (sda
!= NULL
&& !sda
->ref_regular
&& sda
->dynindx
== -1)
6614 s
= bfd_get_section_by_name (output_bfd
, lsect
->name
);
6615 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6617 s
= bfd_get_section_by_name (output_bfd
, lsect
->bss_name
);
6618 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6620 sda
->def_regular
= 0;
6621 /* This is somewhat magic. See elf_link_output_extsym. */
6622 sda
->ref_dynamic
= 1;
6623 sda
->forced_local
= 0;
6630 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info
*info
)
6632 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6636 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[0]);
6637 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[1]);
6642 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6645 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6647 if (h
->plt
.plist
!= NULL
6649 && (!h
->pointer_equality_needed
6650 || !h
->ref_regular_nonweak
))
6653 return _bfd_elf_hash_symbol (h
);
6656 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6658 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6659 used for some functions that are allowed to break the ABI). */
6660 static const int shared_stub_entry
[] =
6662 0x7c0802a6, /* mflr 0 */
6663 0x429f0005, /* bcl 20, 31, .Lxxx */
6664 0x7d8802a6, /* mflr 12 */
6665 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6666 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6667 0x7c0803a6, /* mtlr 0 */
6668 0x7d8903a6, /* mtctr 12 */
6669 0x4e800420, /* bctr */
6672 static const int stub_entry
[] =
6674 0x3d800000, /* lis 12,xxx@ha */
6675 0x398c0000, /* addi 12,12,xxx@l */
6676 0x7d8903a6, /* mtctr 12 */
6677 0x4e800420, /* bctr */
6680 struct ppc_elf_relax_info
6682 unsigned int workaround_size
;
6685 /* This function implements long branch trampolines, and the ppc476
6686 icache bug workaround. Any section needing trampolines or patch
6687 space for the workaround has its size extended so that we can
6688 add trampolines at the end of the section. */
6691 ppc_elf_relax_section (bfd
*abfd
,
6693 struct bfd_link_info
*link_info
,
6698 struct one_fixup
*next
;
6700 /* Final link, can use the symbol offset. For a
6701 relocatable link we use the symbol's index. */
6706 Elf_Internal_Shdr
*symtab_hdr
;
6707 bfd_byte
*contents
= NULL
;
6708 Elf_Internal_Sym
*isymbuf
= NULL
;
6709 Elf_Internal_Rela
*internal_relocs
= NULL
;
6710 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6711 struct one_fixup
*fixups
= NULL
;
6712 struct ppc_elf_relax_info
*relax_info
= NULL
;
6713 unsigned changes
= 0;
6714 bfd_boolean workaround_change
;
6715 struct ppc_elf_link_hash_table
*htab
;
6716 bfd_size_type trampbase
, trampoff
, newsize
;
6718 bfd_boolean maybe_pasted
;
6722 /* No need to do anything with non-alloc or non-code sections. */
6723 if ((isec
->flags
& SEC_ALLOC
) == 0
6724 || (isec
->flags
& SEC_CODE
) == 0
6725 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6729 /* We cannot represent the required PIC relocs in the output, so don't
6730 do anything. The linker doesn't support mixing -shared and -r
6732 if (link_info
->relocatable
&& link_info
->shared
)
6735 htab
= ppc_elf_hash_table (link_info
);
6739 isec
->size
= (isec
->size
+ 3) & -4;
6740 if (isec
->rawsize
== 0)
6741 isec
->rawsize
= isec
->size
;
6742 trampbase
= isec
->size
;
6744 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6745 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6746 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6748 if (htab
->params
->ppc476_workaround
)
6750 if (elf_section_data (isec
)->sec_info
== NULL
)
6752 elf_section_data (isec
)->sec_info
6753 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
6754 if (elf_section_data (isec
)->sec_info
== NULL
)
6757 relax_info
= elf_section_data (isec
)->sec_info
;
6758 trampbase
-= relax_info
->workaround_size
;
6761 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6762 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6763 /* Space for a branch around any trampolines. */
6764 trampoff
= trampbase
;
6765 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
6768 symtab_hdr
= &elf_symtab_hdr (abfd
);
6770 if (htab
->params
->branch_trampolines
)
6772 /* Get a copy of the native relocations. */
6773 if (isec
->reloc_count
!= 0)
6775 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6776 link_info
->keep_memory
);
6777 if (internal_relocs
== NULL
)
6781 got2
= bfd_get_section_by_name (abfd
, ".got2");
6783 irelend
= internal_relocs
+ isec
->reloc_count
;
6784 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6786 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6789 struct one_fixup
*f
;
6790 size_t insn_offset
= 0;
6791 bfd_vma max_branch_offset
, val
;
6794 struct elf_link_hash_entry
*h
;
6795 struct plt_entry
**plist
;
6796 unsigned char sym_type
;
6801 case R_PPC_LOCAL24PC
:
6802 case R_PPC_PLTREL24
:
6803 max_branch_offset
= 1 << 25;
6807 case R_PPC_REL14_BRTAKEN
:
6808 case R_PPC_REL14_BRNTAKEN
:
6809 max_branch_offset
= 1 << 15;
6816 /* Get the value of the symbol referred to by the reloc. */
6818 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6820 /* A local symbol. */
6821 Elf_Internal_Sym
*isym
;
6823 /* Read this BFD's local symbols. */
6824 if (isymbuf
== NULL
)
6826 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6827 if (isymbuf
== NULL
)
6828 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
6829 symtab_hdr
->sh_info
, 0,
6834 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6835 if (isym
->st_shndx
== SHN_UNDEF
)
6836 tsec
= bfd_und_section_ptr
;
6837 else if (isym
->st_shndx
== SHN_ABS
)
6838 tsec
= bfd_abs_section_ptr
;
6839 else if (isym
->st_shndx
== SHN_COMMON
)
6840 tsec
= bfd_com_section_ptr
;
6842 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6844 toff
= isym
->st_value
;
6845 sym_type
= ELF_ST_TYPE (isym
->st_info
);
6849 /* Global symbol handling. */
6852 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6853 h
= elf_sym_hashes (abfd
)[indx
];
6855 while (h
->root
.type
== bfd_link_hash_indirect
6856 || h
->root
.type
== bfd_link_hash_warning
)
6857 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6859 if (h
->root
.type
== bfd_link_hash_defined
6860 || h
->root
.type
== bfd_link_hash_defweak
)
6862 tsec
= h
->root
.u
.def
.section
;
6863 toff
= h
->root
.u
.def
.value
;
6865 else if (h
->root
.type
== bfd_link_hash_undefined
6866 || h
->root
.type
== bfd_link_hash_undefweak
)
6868 tsec
= bfd_und_section_ptr
;
6869 toff
= link_info
->relocatable
? indx
: 0;
6874 /* If this branch is to __tls_get_addr then we may later
6875 optimise away the call. We won't be needing a long-
6876 branch stub in that case. */
6877 if (link_info
->executable
6878 && !link_info
->relocatable
6879 && h
== htab
->tls_get_addr
6880 && irel
!= internal_relocs
)
6882 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
6883 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
6884 unsigned int tls_mask
= 0;
6886 /* The previous reloc should be one of R_PPC_TLSGD or
6887 R_PPC_TLSLD, or for older object files, a reloc
6888 on the __tls_get_addr arg setup insn. Get tls
6889 mask bits from the symbol on that reloc. */
6890 if (t_symndx
< symtab_hdr
->sh_info
)
6892 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6894 if (local_got_offsets
!= NULL
)
6896 struct plt_entry
**local_plt
= (struct plt_entry
**)
6897 (local_got_offsets
+ symtab_hdr
->sh_info
);
6898 char *lgot_masks
= (char *)
6899 (local_plt
+ symtab_hdr
->sh_info
);
6900 tls_mask
= lgot_masks
[t_symndx
];
6905 struct elf_link_hash_entry
*th
6906 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
6908 while (th
->root
.type
== bfd_link_hash_indirect
6909 || th
->root
.type
== bfd_link_hash_warning
)
6910 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
6913 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
6916 /* The mask bits tell us if the call will be
6918 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
6919 && (t_rtype
== R_PPC_TLSGD
6920 || t_rtype
== R_PPC_GOT_TLSGD16
6921 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
6923 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
6924 && (t_rtype
== R_PPC_TLSLD
6925 || t_rtype
== R_PPC_GOT_TLSLD16
6926 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
6933 /* The condition here under which we call find_plt_ent must
6934 match that in relocate_section. If we call find_plt_ent here
6935 but not in relocate_section, or vice versa, then the branch
6936 destination used here may be incorrect. */
6940 /* We know is_branch_reloc (r_type) is true. */
6941 if (h
->type
== STT_GNU_IFUNC
6942 || r_type
== R_PPC_PLTREL24
)
6943 plist
= &h
->plt
.plist
;
6945 else if (sym_type
== STT_GNU_IFUNC
6946 && elf_local_got_offsets (abfd
) != NULL
)
6948 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6949 struct plt_entry
**local_plt
= (struct plt_entry
**)
6950 (local_got_offsets
+ symtab_hdr
->sh_info
);
6951 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
6956 struct plt_entry
*ent
;
6958 if (r_type
== R_PPC_PLTREL24
&& link_info
->shared
)
6959 addend
= irel
->r_addend
;
6960 ent
= find_plt_ent (plist
, got2
, addend
);
6963 if (htab
->plt_type
== PLT_NEW
6965 || !htab
->elf
.dynamic_sections_created
6966 || h
->dynindx
== -1)
6969 toff
= ent
->glink_offset
;
6974 toff
= ent
->plt
.offset
;
6979 /* If the branch and target are in the same section, you have
6980 no hope of adding stubs. We'll error out later should the
6985 /* There probably isn't any reason to handle symbols in
6986 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6987 attribute for a code section, and we are only looking at
6988 branches. However, implement it correctly here as a
6989 reference for other target relax_section functions. */
6990 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
6992 /* At this stage in linking, no SEC_MERGE symbol has been
6993 adjusted, so all references to such symbols need to be
6994 passed through _bfd_merged_section_offset. (Later, in
6995 relocate_section, all SEC_MERGE symbols *except* for
6996 section symbols have been adjusted.)
6998 gas may reduce relocations against symbols in SEC_MERGE
6999 sections to a relocation against the section symbol when
7000 the original addend was zero. When the reloc is against
7001 a section symbol we should include the addend in the
7002 offset passed to _bfd_merged_section_offset, since the
7003 location of interest is the original symbol. On the
7004 other hand, an access to "sym+addend" where "sym" is not
7005 a section symbol should not include the addend; Such an
7006 access is presumed to be an offset from "sym"; The
7007 location of interest is just "sym". */
7008 if (sym_type
== STT_SECTION
)
7009 toff
+= irel
->r_addend
;
7012 = _bfd_merged_section_offset (abfd
, &tsec
,
7013 elf_section_data (tsec
)->sec_info
,
7016 if (sym_type
!= STT_SECTION
)
7017 toff
+= irel
->r_addend
;
7019 /* PLTREL24 addends are special. */
7020 else if (r_type
!= R_PPC_PLTREL24
)
7021 toff
+= irel
->r_addend
;
7023 /* Attempted -shared link of non-pic code loses. */
7024 if ((!link_info
->relocatable
7025 && tsec
== bfd_und_section_ptr
)
7026 || tsec
->output_section
== NULL
7027 || (tsec
->owner
!= NULL
7028 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
7031 roff
= irel
->r_offset
;
7033 /* If the branch is in range, no need to do anything. */
7034 if (tsec
!= bfd_und_section_ptr
7035 && (!link_info
->relocatable
7036 /* A relocatable link may have sections moved during
7037 final link, so do not presume they remain in range. */
7038 || tsec
->output_section
== isec
->output_section
))
7040 bfd_vma symaddr
, reladdr
;
7042 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7043 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7044 if (symaddr
- reladdr
+ max_branch_offset
7045 < 2 * max_branch_offset
)
7049 /* Look for an existing fixup to this address. */
7050 for (f
= fixups
; f
; f
= f
->next
)
7051 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7057 unsigned long stub_rtype
;
7059 val
= trampoff
- roff
;
7060 if (val
>= max_branch_offset
)
7061 /* Oh dear, we can't reach a trampoline. Don't try to add
7062 one. We'll report an error later. */
7065 if (link_info
->shared
)
7067 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7072 size
= 4 * ARRAY_SIZE (stub_entry
);
7075 stub_rtype
= R_PPC_RELAX
;
7076 if (tsec
== htab
->plt
7077 || tsec
== htab
->glink
)
7079 stub_rtype
= R_PPC_RELAX_PLT
;
7080 if (r_type
== R_PPC_PLTREL24
)
7081 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7084 /* Hijack the old relocation. Since we need two
7085 relocations for this use a "composite" reloc. */
7086 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7088 irel
->r_offset
= trampoff
+ insn_offset
;
7089 if (r_type
== R_PPC_PLTREL24
7090 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7093 /* Record the fixup so we don't do it again this section. */
7094 f
= bfd_malloc (sizeof (*f
));
7098 f
->trampoff
= trampoff
;
7106 val
= f
->trampoff
- roff
;
7107 if (val
>= max_branch_offset
)
7110 /* Nop out the reloc, since we're finalizing things here. */
7111 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7114 /* Get the section contents. */
7115 if (contents
== NULL
)
7117 /* Get cached copy if it exists. */
7118 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7119 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7120 /* Go get them off disk. */
7121 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7125 /* Fix up the existing branch to hit the trampoline. */
7126 hit_addr
= contents
+ roff
;
7130 case R_PPC_LOCAL24PC
:
7131 case R_PPC_PLTREL24
:
7132 t0
= bfd_get_32 (abfd
, hit_addr
);
7134 t0
|= val
& 0x3fffffc;
7135 bfd_put_32 (abfd
, t0
, hit_addr
);
7139 case R_PPC_REL14_BRTAKEN
:
7140 case R_PPC_REL14_BRNTAKEN
:
7141 t0
= bfd_get_32 (abfd
, hit_addr
);
7144 bfd_put_32 (abfd
, t0
, hit_addr
);
7149 while (fixups
!= NULL
)
7151 struct one_fixup
*f
= fixups
;
7152 fixups
= fixups
->next
;
7157 workaround_change
= FALSE
;
7159 if (htab
->params
->ppc476_workaround
7160 && (!link_info
->relocatable
7161 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7163 bfd_vma addr
, end_addr
;
7164 unsigned int crossings
;
7165 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7167 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7168 end_addr
= addr
+ trampoff
;
7170 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7173 /* Keep space aligned, to ensure the patch code itself does
7174 not cross a page. Don't decrease size calculated on a
7175 previous pass as otherwise we might never settle on a layout. */
7176 newsize
= 15 - (end_addr
& 15);
7177 newsize
+= crossings
* 16;
7178 if (relax_info
->workaround_size
< newsize
)
7180 relax_info
->workaround_size
= newsize
;
7181 workaround_change
= TRUE
;
7183 /* Ensure relocate_section is called. */
7184 isec
->flags
|= SEC_RELOC
;
7186 newsize
= trampoff
+ relax_info
->workaround_size
;
7189 if (changes
|| workaround_change
)
7190 isec
->size
= newsize
;
7193 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7195 if (! link_info
->keep_memory
)
7199 /* Cache the symbols for elf_link_input_bfd. */
7200 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7204 if (contents
!= NULL
7205 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7207 if (!changes
&& !link_info
->keep_memory
)
7211 /* Cache the section contents for elf_link_input_bfd. */
7212 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7218 /* Append sufficient NOP relocs so we can write out relocation
7219 information for the trampolines. */
7220 Elf_Internal_Shdr
*rel_hdr
;
7221 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7222 * sizeof (*new_relocs
));
7227 memcpy (new_relocs
, internal_relocs
,
7228 isec
->reloc_count
* sizeof (*new_relocs
));
7229 for (ix
= changes
; ix
--;)
7231 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7233 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7235 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7236 free (internal_relocs
);
7237 elf_section_data (isec
)->relocs
= new_relocs
;
7238 isec
->reloc_count
+= changes
;
7239 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7240 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7242 else if (internal_relocs
!= NULL
7243 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7244 free (internal_relocs
);
7246 *again
= changes
!= 0 || workaround_change
;
7250 while (fixups
!= NULL
)
7252 struct one_fixup
*f
= fixups
;
7253 fixups
= fixups
->next
;
7256 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7258 if (contents
!= NULL
7259 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7261 if (internal_relocs
!= NULL
7262 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7263 free (internal_relocs
);
7267 /* What to do when ld finds relocations against symbols defined in
7268 discarded sections. */
7271 ppc_elf_action_discarded (asection
*sec
)
7273 if (strcmp (".fixup", sec
->name
) == 0)
7276 if (strcmp (".got2", sec
->name
) == 0)
7279 return _bfd_elf_default_action_discarded (sec
);
7282 /* Fill in the address for a pointer generated in a linker section. */
7285 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7286 elf_linker_section_t
*lsect
,
7287 struct elf_link_hash_entry
*h
,
7289 const Elf_Internal_Rela
*rel
)
7291 elf_linker_section_pointers_t
*linker_section_ptr
;
7293 BFD_ASSERT (lsect
!= NULL
);
7297 /* Handle global symbol. */
7298 struct ppc_elf_link_hash_entry
*eh
;
7300 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7301 BFD_ASSERT (eh
->elf
.def_regular
);
7302 linker_section_ptr
= eh
->linker_section_pointer
;
7306 /* Handle local symbol. */
7307 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7309 BFD_ASSERT (is_ppc_elf (input_bfd
));
7310 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7311 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7314 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7317 BFD_ASSERT (linker_section_ptr
!= NULL
);
7319 /* Offset will always be a multiple of four, so use the bottom bit
7320 as a "written" flag. */
7321 if ((linker_section_ptr
->offset
& 1) == 0)
7323 bfd_put_32 (lsect
->section
->owner
,
7324 relocation
+ linker_section_ptr
->addend
,
7325 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7326 linker_section_ptr
->offset
+= 1;
7329 relocation
= (lsect
->section
->output_section
->vma
7330 + lsect
->section
->output_offset
7331 + linker_section_ptr
->offset
- 1
7332 - SYM_VAL (lsect
->sym
));
7336 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7337 lsect
->name
, (long) relocation
, (long) relocation
);
7343 #define PPC_LO(v) ((v) & 0xffff)
7344 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7345 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7348 write_glink_stub (struct plt_entry
*ent
, asection
*plt_sec
, unsigned char *p
,
7349 struct bfd_link_info
*info
)
7351 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7352 bfd
*output_bfd
= info
->output_bfd
;
7355 plt
= ((ent
->plt
.offset
& ~1)
7356 + plt_sec
->output_section
->vma
7357 + plt_sec
->output_offset
);
7363 if (ent
->addend
>= 32768)
7365 + ent
->sec
->output_section
->vma
7366 + ent
->sec
->output_offset
);
7367 else if (htab
->elf
.hgot
!= NULL
)
7368 got
= SYM_VAL (htab
->elf
.hgot
);
7372 if (plt
+ 0x8000 < 0x10000)
7374 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7376 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7378 bfd_put_32 (output_bfd
, BCTR
, p
);
7380 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7385 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7387 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7389 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7391 bfd_put_32 (output_bfd
, BCTR
, p
);
7397 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7399 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7401 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7403 bfd_put_32 (output_bfd
, BCTR
, p
);
7408 /* Return true if symbol is defined statically. */
7411 is_static_defined (struct elf_link_hash_entry
*h
)
7413 return ((h
->root
.type
== bfd_link_hash_defined
7414 || h
->root
.type
== bfd_link_hash_defweak
)
7415 && h
->root
.u
.def
.section
!= NULL
7416 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7419 /* If INSN is an opcode that may be used with an @tls operand, return
7420 the transformed insn for TLS optimisation, otherwise return 0. If
7421 REG is non-zero only match an insn with RB or RA equal to REG. */
7424 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7428 if ((insn
& (0x3f << 26)) != 31 << 26)
7431 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7432 rtra
= insn
& ((1 << 26) - (1 << 16));
7433 else if (((insn
>> 16) & 0x1f) == reg
)
7434 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7438 if ((insn
& (0x3ff << 1)) == 266 << 1)
7441 else if ((insn
& (0x1f << 1)) == 23 << 1
7442 && ((insn
& (0x1f << 6)) < 14 << 6
7443 || ((insn
& (0x1f << 6)) >= 16 << 6
7444 && (insn
& (0x1f << 6)) < 24 << 6)))
7445 /* load and store indexed -> dform. */
7446 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7447 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7448 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7449 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7450 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7452 insn
= (58 << 26) | 2;
7459 /* If INSN is an opcode that may be used with an @tprel operand, return
7460 the transformed insn for an undefined weak symbol, ie. with the
7461 thread pointer REG operand removed. Otherwise return 0. */
7464 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7466 if ((insn
& (0x1f << 16)) == reg
<< 16
7467 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7468 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7469 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7470 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7471 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7472 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7473 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7474 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7475 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7476 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7477 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7478 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7479 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7480 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7481 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7482 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7484 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7485 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7487 insn
&= ~(0x1f << 16);
7489 else if ((insn
& (0x1f << 21)) == reg
<< 21
7490 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7491 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7492 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7494 insn
&= ~(0x1f << 21);
7495 insn
|= (insn
& (0x1f << 16)) << 5;
7496 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7497 insn
-= 2 >> 26; /* convert to ori,oris */
7505 is_insn_ds_form (unsigned int insn
)
7507 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7508 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7509 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7510 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7514 is_insn_dq_form (unsigned int insn
)
7516 return (insn
& (0x3f << 26)) == 56u << 26; /* lq */
7519 /* The RELOCATE_SECTION function is called by the ELF backend linker
7520 to handle the relocations for a section.
7522 The relocs are always passed as Rela structures; if the section
7523 actually uses Rel structures, the r_addend field will always be
7526 This function is responsible for adjust the section contents as
7527 necessary, and (if using Rela relocs and generating a
7528 relocatable output file) adjusting the reloc addend as
7531 This function does not have to worry about setting the reloc
7532 address or the reloc symbol index.
7534 LOCAL_SYMS is a pointer to the swapped in local symbols.
7536 LOCAL_SECTIONS is an array giving the section in the input file
7537 corresponding to the st_shndx field of each local symbol.
7539 The global hash table entry for the global symbols can be found
7540 via elf_sym_hashes (input_bfd).
7542 When generating relocatable output, this function must handle
7543 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7544 going to be the section symbol corresponding to the output
7545 section, which means that the addend must be adjusted
7549 ppc_elf_relocate_section (bfd
*output_bfd
,
7550 struct bfd_link_info
*info
,
7552 asection
*input_section
,
7554 Elf_Internal_Rela
*relocs
,
7555 Elf_Internal_Sym
*local_syms
,
7556 asection
**local_sections
)
7558 Elf_Internal_Shdr
*symtab_hdr
;
7559 struct elf_link_hash_entry
**sym_hashes
;
7560 struct ppc_elf_link_hash_table
*htab
;
7561 Elf_Internal_Rela
*rel
;
7562 Elf_Internal_Rela
*relend
;
7563 Elf_Internal_Rela outrel
;
7565 bfd_vma
*local_got_offsets
;
7566 bfd_boolean ret
= TRUE
;
7567 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
7568 bfd_boolean is_vxworks_tls
;
7571 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7572 "%ld relocations%s",
7573 input_bfd
, input_section
,
7574 (long) input_section
->reloc_count
,
7575 (info
->relocatable
) ? " (relocatable)" : "");
7578 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7580 /* Initialize howto table if not already done. */
7581 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7582 ppc_elf_howto_init ();
7584 htab
= ppc_elf_hash_table (info
);
7585 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7586 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7587 sym_hashes
= elf_sym_hashes (input_bfd
);
7588 /* We have to handle relocations in vxworks .tls_vars sections
7589 specially, because the dynamic loader is 'weird'. */
7590 is_vxworks_tls
= (htab
->is_vxworks
&& info
->shared
7591 && !strcmp (input_section
->output_section
->name
,
7594 relend
= relocs
+ input_section
->reloc_count
;
7595 for (; rel
< relend
; rel
++)
7597 enum elf_ppc_reloc_type r_type
;
7599 bfd_reloc_status_type r
;
7600 Elf_Internal_Sym
*sym
;
7602 struct elf_link_hash_entry
*h
;
7603 const char *sym_name
;
7604 reloc_howto_type
*howto
;
7605 unsigned long r_symndx
;
7607 bfd_vma branch_bit
, from
;
7608 bfd_boolean unresolved_reloc
;
7610 unsigned int tls_type
, tls_mask
, tls_gd
;
7611 struct plt_entry
**ifunc
;
7612 struct reloc_howto_struct alt_howto
;
7614 r_type
= ELF32_R_TYPE (rel
->r_info
);
7618 unresolved_reloc
= FALSE
;
7620 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7622 if (r_symndx
< symtab_hdr
->sh_info
)
7624 sym
= local_syms
+ r_symndx
;
7625 sec
= local_sections
[r_symndx
];
7626 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7628 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7632 bfd_boolean ignored
;
7634 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7635 r_symndx
, symtab_hdr
, sym_hashes
,
7637 unresolved_reloc
, warned
, ignored
);
7639 sym_name
= h
->root
.root
.string
;
7642 if (sec
!= NULL
&& discarded_section (sec
))
7644 /* For relocs against symbols from removed linkonce sections,
7645 or sections discarded by a linker script, we just want the
7646 section contents zeroed. Avoid any special processing. */
7648 if (r_type
< R_PPC_max
)
7649 howto
= ppc_elf_howto_table
[r_type
];
7650 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
7651 rel
, 1, relend
, howto
, 0, contents
);
7654 if (info
->relocatable
)
7657 && r_type
== R_PPC_PLTREL24
7658 && rel
->r_addend
!= 0)
7660 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7661 addend specifies the GOT pointer offset within .got2. */
7662 rel
->r_addend
+= got2
->output_offset
;
7664 if (r_type
!= R_PPC_RELAX_PLT
7665 && r_type
!= R_PPC_RELAX_PLTREL24
7666 && r_type
!= R_PPC_RELAX
)
7670 /* TLS optimizations. Replace instruction sequences and relocs
7671 based on information we collected in tls_optimize. We edit
7672 RELOCS so that --emit-relocs will output something sensible
7673 for the final instruction stream. */
7677 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7678 else if (local_got_offsets
!= NULL
)
7680 struct plt_entry
**local_plt
;
7683 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7684 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7685 tls_mask
= lgot_masks
[r_symndx
];
7688 /* Ensure reloc mapping code below stays sane. */
7689 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7690 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7691 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7692 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7693 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7694 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7695 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7696 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
7703 case R_PPC_GOT_TPREL16
:
7704 case R_PPC_GOT_TPREL16_LO
:
7705 if ((tls_mask
& TLS_TLS
) != 0
7706 && (tls_mask
& TLS_TPREL
) == 0)
7710 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
7712 insn
|= 0x3c020000; /* addis 0,2,0 */
7713 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
7714 r_type
= R_PPC_TPREL16_HA
;
7715 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7720 if ((tls_mask
& TLS_TLS
) != 0
7721 && (tls_mask
& TLS_TPREL
) == 0)
7725 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7726 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
7729 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7730 r_type
= R_PPC_TPREL16_LO
;
7731 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7733 /* Was PPC_TLS which sits on insn boundary, now
7734 PPC_TPREL16_LO which is at low-order half-word. */
7735 rel
->r_offset
+= d_offset
;
7739 case R_PPC_GOT_TLSGD16_HI
:
7740 case R_PPC_GOT_TLSGD16_HA
:
7741 tls_gd
= TLS_TPRELGD
;
7742 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7746 case R_PPC_GOT_TLSLD16_HI
:
7747 case R_PPC_GOT_TLSLD16_HA
:
7748 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7751 if ((tls_mask
& tls_gd
) != 0)
7752 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7753 + R_PPC_GOT_TPREL16
);
7756 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
7757 rel
->r_offset
-= d_offset
;
7758 r_type
= R_PPC_NONE
;
7760 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7764 case R_PPC_GOT_TLSGD16
:
7765 case R_PPC_GOT_TLSGD16_LO
:
7766 tls_gd
= TLS_TPRELGD
;
7767 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7771 case R_PPC_GOT_TLSLD16
:
7772 case R_PPC_GOT_TLSLD16_LO
:
7773 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7775 unsigned int insn1
, insn2
;
7779 offset
= (bfd_vma
) -1;
7780 /* If not using the newer R_PPC_TLSGD/LD to mark
7781 __tls_get_addr calls, we must trust that the call
7782 stays with its arg setup insns, ie. that the next
7783 reloc is the __tls_get_addr call associated with
7784 the current reloc. Edit both insns. */
7785 if (input_section
->has_tls_get_addr_call
7787 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
7788 htab
->tls_get_addr
))
7789 offset
= rel
[1].r_offset
;
7790 if ((tls_mask
& tls_gd
) != 0)
7793 insn1
= bfd_get_32 (output_bfd
,
7794 contents
+ rel
->r_offset
- d_offset
);
7795 insn1
&= (1 << 26) - 1;
7796 insn1
|= 32 << 26; /* lwz */
7797 if (offset
!= (bfd_vma
) -1)
7799 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7800 insn2
= 0x7c631214; /* add 3,3,2 */
7801 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7803 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7804 + R_PPC_GOT_TPREL16
);
7805 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7810 insn1
= 0x3c620000; /* addis 3,2,0 */
7813 /* Was an LD reloc. */
7815 r_symndx
< symtab_hdr
->sh_info
;
7817 if (local_sections
[r_symndx
] == sec
)
7819 if (r_symndx
>= symtab_hdr
->sh_info
)
7820 r_symndx
= STN_UNDEF
;
7821 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7822 if (r_symndx
!= STN_UNDEF
)
7823 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7824 + sec
->output_offset
7825 + sec
->output_section
->vma
);
7827 r_type
= R_PPC_TPREL16_HA
;
7828 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7829 if (offset
!= (bfd_vma
) -1)
7831 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7832 rel
[1].r_offset
= offset
+ d_offset
;
7833 rel
[1].r_addend
= rel
->r_addend
;
7834 insn2
= 0x38630000; /* addi 3,3,0 */
7835 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7838 bfd_put_32 (output_bfd
, insn1
,
7839 contents
+ rel
->r_offset
- d_offset
);
7842 /* We changed the symbol on an LD reloc. Start over
7843 in order to get h, sym, sec etc. right. */
7851 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7854 bfd_vma offset
= rel
->r_offset
;
7856 if ((tls_mask
& TLS_TPRELGD
) != 0)
7859 r_type
= R_PPC_NONE
;
7860 insn2
= 0x7c631214; /* add 3,3,2 */
7865 r_type
= R_PPC_TPREL16_LO
;
7866 rel
->r_offset
+= d_offset
;
7867 insn2
= 0x38630000; /* addi 3,3,0 */
7869 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7870 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7871 /* Zap the reloc on the _tls_get_addr call too. */
7872 BFD_ASSERT (offset
== rel
[1].r_offset
);
7873 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7878 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7883 r_symndx
< symtab_hdr
->sh_info
;
7885 if (local_sections
[r_symndx
] == sec
)
7887 if (r_symndx
>= symtab_hdr
->sh_info
)
7888 r_symndx
= STN_UNDEF
;
7889 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7890 if (r_symndx
!= STN_UNDEF
)
7891 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7892 + sec
->output_offset
7893 + sec
->output_section
->vma
);
7895 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7896 rel
->r_offset
+= d_offset
;
7897 insn2
= 0x38630000; /* addi 3,3,0 */
7898 bfd_put_32 (output_bfd
, insn2
,
7899 contents
+ rel
->r_offset
- d_offset
);
7900 /* Zap the reloc on the _tls_get_addr call too. */
7901 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
7902 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7909 /* Handle other relocations that tweak non-addend part of insn. */
7916 /* Branch taken prediction relocations. */
7917 case R_PPC_ADDR14_BRTAKEN
:
7918 case R_PPC_REL14_BRTAKEN
:
7919 branch_bit
= BRANCH_PREDICT_BIT
;
7922 /* Branch not taken prediction relocations. */
7923 case R_PPC_ADDR14_BRNTAKEN
:
7924 case R_PPC_REL14_BRNTAKEN
:
7928 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7929 insn
&= ~BRANCH_PREDICT_BIT
;
7932 from
= (rel
->r_offset
7933 + input_section
->output_offset
7934 + input_section
->output_section
->vma
);
7936 /* Invert 'y' bit if not the default. */
7937 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
7938 insn
^= BRANCH_PREDICT_BIT
;
7940 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7946 if (!htab
->is_vxworks
)
7948 struct plt_entry
*ent
;
7952 if (h
->type
== STT_GNU_IFUNC
)
7953 ifunc
= &h
->plt
.plist
;
7955 else if (local_got_offsets
!= NULL
7956 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
7958 struct plt_entry
**local_plt
;
7960 local_plt
= (struct plt_entry
**) (local_got_offsets
7961 + symtab_hdr
->sh_info
);
7962 ifunc
= local_plt
+ r_symndx
;
7968 || is_branch_reloc (r_type
)))
7971 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
7972 addend
= rel
->r_addend
;
7973 ent
= find_plt_ent (ifunc
, got2
, addend
);
7977 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
7979 Elf_Internal_Rela rela
;
7982 rela
.r_offset
= (htab
->iplt
->output_section
->vma
7983 + htab
->iplt
->output_offset
7985 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
7986 rela
.r_addend
= relocation
;
7987 loc
= htab
->reliplt
->contents
;
7988 loc
+= (htab
->reliplt
->reloc_count
++
7989 * sizeof (Elf32_External_Rela
));
7990 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7992 ent
->plt
.offset
|= 1;
7994 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
7996 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
7997 + ent
->glink_offset
);
7998 write_glink_stub (ent
, htab
->iplt
, p
, info
);
7999 ent
->glink_offset
|= 1;
8002 unresolved_reloc
= FALSE
;
8003 if (htab
->plt_type
== PLT_NEW
8004 || !htab
->elf
.dynamic_sections_created
8006 || h
->dynindx
== -1)
8007 relocation
= (htab
->glink
->output_section
->vma
8008 + htab
->glink
->output_offset
8009 + (ent
->glink_offset
& ~1));
8011 relocation
= (htab
->plt
->output_section
->vma
8012 + htab
->plt
->output_offset
8017 addend
= rel
->r_addend
;
8020 if (r_type
< R_PPC_max
)
8021 howto
= ppc_elf_howto_table
[r_type
];
8025 info
->callbacks
->einfo
8026 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8027 input_bfd
, (int) r_type
, sym_name
);
8029 bfd_set_error (bfd_error_bad_value
);
8037 case R_PPC_EMB_MRKREF
:
8038 case R_PPC_GNU_VTINHERIT
:
8039 case R_PPC_GNU_VTENTRY
:
8042 /* GOT16 relocations. Like an ADDR16 using the symbol's
8043 address in the GOT as relocation value instead of the
8044 symbol's value itself. Also, create a GOT entry for the
8045 symbol and put the symbol value there. */
8046 case R_PPC_GOT_TLSGD16
:
8047 case R_PPC_GOT_TLSGD16_LO
:
8048 case R_PPC_GOT_TLSGD16_HI
:
8049 case R_PPC_GOT_TLSGD16_HA
:
8050 tls_type
= TLS_TLS
| TLS_GD
;
8053 case R_PPC_GOT_TLSLD16
:
8054 case R_PPC_GOT_TLSLD16_LO
:
8055 case R_PPC_GOT_TLSLD16_HI
:
8056 case R_PPC_GOT_TLSLD16_HA
:
8057 tls_type
= TLS_TLS
| TLS_LD
;
8060 case R_PPC_GOT_TPREL16
:
8061 case R_PPC_GOT_TPREL16_LO
:
8062 case R_PPC_GOT_TPREL16_HI
:
8063 case R_PPC_GOT_TPREL16_HA
:
8064 tls_type
= TLS_TLS
| TLS_TPREL
;
8067 case R_PPC_GOT_DTPREL16
:
8068 case R_PPC_GOT_DTPREL16_LO
:
8069 case R_PPC_GOT_DTPREL16_HI
:
8070 case R_PPC_GOT_DTPREL16_HA
:
8071 tls_type
= TLS_TLS
| TLS_DTPREL
;
8075 case R_PPC_GOT16_LO
:
8076 case R_PPC_GOT16_HI
:
8077 case R_PPC_GOT16_HA
:
8081 /* Relocation is to the entry for this symbol in the global
8087 if (htab
->got
== NULL
)
8091 if (tls_type
== (TLS_TLS
| TLS_LD
)
8093 || !h
->def_dynamic
))
8094 offp
= &htab
->tlsld_got
.offset
;
8098 dyn
= htab
->elf
.dynamic_sections_created
;
8099 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
8101 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
8102 /* This is actually a static link, or it is a
8103 -Bsymbolic link and the symbol is defined
8104 locally, or the symbol was forced to be local
8105 because of a version file. */
8109 BFD_ASSERT (h
->dynindx
!= -1);
8111 unresolved_reloc
= FALSE
;
8113 offp
= &h
->got
.offset
;
8117 if (local_got_offsets
== NULL
)
8119 offp
= &local_got_offsets
[r_symndx
];
8122 /* The offset must always be a multiple of 4. We use the
8123 least significant bit to record whether we have already
8124 processed this entry. */
8130 unsigned int tls_m
= (tls_mask
8131 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8132 | TLS_TPREL
| TLS_TPRELGD
));
8134 if (offp
== &htab
->tlsld_got
.offset
)
8140 /* We might have multiple got entries for this sym.
8141 Initialize them all. */
8146 if ((tls_m
& TLS_LD
) != 0)
8148 tls_ty
= TLS_TLS
| TLS_LD
;
8151 else if ((tls_m
& TLS_GD
) != 0)
8153 tls_ty
= TLS_TLS
| TLS_GD
;
8156 else if ((tls_m
& TLS_DTPREL
) != 0)
8158 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8159 tls_m
&= ~TLS_DTPREL
;
8161 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8163 tls_ty
= TLS_TLS
| TLS_TPREL
;
8167 /* Generate relocs for the dynamic linker. */
8168 if ((info
->shared
|| indx
!= 0)
8169 && (offp
== &htab
->tlsld_got
.offset
8171 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8172 || h
->root
.type
!= bfd_link_hash_undefweak
))
8174 asection
*rsec
= htab
->relgot
;
8178 rsec
= htab
->reliplt
;
8179 outrel
.r_offset
= (htab
->got
->output_section
->vma
8180 + htab
->got
->output_offset
8182 outrel
.r_addend
= 0;
8183 if (tls_ty
& (TLS_LD
| TLS_GD
))
8185 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8186 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8188 loc
= rsec
->contents
;
8189 loc
+= (rsec
->reloc_count
++
8190 * sizeof (Elf32_External_Rela
));
8191 bfd_elf32_swap_reloca_out (output_bfd
,
8193 outrel
.r_offset
+= 4;
8195 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8198 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8199 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8200 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8201 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8203 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8204 else if (ifunc
!= NULL
)
8205 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8207 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8208 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8210 outrel
.r_addend
+= relocation
;
8211 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8212 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8214 loc
= rsec
->contents
;
8215 loc
+= (rsec
->reloc_count
++
8216 * sizeof (Elf32_External_Rela
));
8217 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8220 /* Init the .got section contents if we're not
8221 emitting a reloc. */
8224 bfd_vma value
= relocation
;
8226 if (tls_ty
== (TLS_TLS
| TLS_LD
))
8228 else if (tls_ty
!= 0)
8230 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8231 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8232 value
+= DTP_OFFSET
- TP_OFFSET
;
8234 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8236 bfd_put_32 (output_bfd
, value
,
8237 htab
->got
->contents
+ off
+ 4);
8241 bfd_put_32 (output_bfd
, value
,
8242 htab
->got
->contents
+ off
);
8246 if (tls_ty
& (TLS_LD
| TLS_GD
))
8255 if (off
>= (bfd_vma
) -2)
8258 if ((tls_type
& TLS_TLS
) != 0)
8260 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8262 if ((tls_mask
& TLS_LD
) != 0
8264 || !h
->def_dynamic
))
8266 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8268 if ((tls_mask
& TLS_GD
) != 0)
8270 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8272 if ((tls_mask
& TLS_DTPREL
) != 0)
8279 relocation
= (htab
->got
->output_section
->vma
8280 + htab
->got
->output_offset
8282 - SYM_VAL (htab
->elf
.hgot
));
8284 /* Addends on got relocations don't make much sense.
8285 x+off@got is actually x@got+off, and since the got is
8286 generated by a hash table traversal, the value in the
8287 got at entry m+n bears little relation to the entry m. */
8289 info
->callbacks
->einfo
8290 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8291 input_bfd
, input_section
, rel
->r_offset
,
8297 /* Relocations that need no special processing. */
8298 case R_PPC_LOCAL24PC
:
8299 /* It makes no sense to point a local relocation
8300 at a symbol not in this object. */
8301 if (unresolved_reloc
)
8303 if (! (*info
->callbacks
->undefined_symbol
) (info
,
8304 h
->root
.root
.string
,
8314 case R_PPC_DTPREL16
:
8315 case R_PPC_DTPREL16_LO
:
8316 case R_PPC_DTPREL16_HI
:
8317 case R_PPC_DTPREL16_HA
:
8318 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8321 /* Relocations that may need to be propagated if this is a shared
8324 case R_PPC_TPREL16_LO
:
8325 case R_PPC_TPREL16_HI
:
8326 case R_PPC_TPREL16_HA
:
8328 && h
->root
.type
== bfd_link_hash_undefweak
8329 && h
->dynindx
== -1)
8331 /* Make this relocation against an undefined weak symbol
8332 resolve to zero. This is really just a tweak, since
8333 code using weak externs ought to check that they are
8334 defined before using them. */
8335 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8336 unsigned int insn
= bfd_get_32 (output_bfd
, p
);
8337 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8339 bfd_put_32 (output_bfd
, insn
, p
);
8342 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8343 /* The TPREL16 relocs shouldn't really be used in shared
8344 libs as they will result in DT_TEXTREL being set, but
8345 support them anyway. */
8349 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8352 case R_PPC_DTPREL32
:
8353 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8356 case R_PPC_DTPMOD32
:
8362 case R_PPC_REL16_LO
:
8363 case R_PPC_REL16_HI
:
8364 case R_PPC_REL16_HA
:
8368 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8374 case R_PPC_ADDR16_LO
:
8375 case R_PPC_ADDR16_HI
:
8376 case R_PPC_ADDR16_HA
:
8381 case R_PPC_VLE_REL8
:
8382 case R_PPC_VLE_REL15
:
8383 case R_PPC_VLE_REL24
:
8386 case R_PPC_REL14_BRTAKEN
:
8387 case R_PPC_REL14_BRNTAKEN
:
8388 /* If these relocations are not to a named symbol, they can be
8389 handled right here, no need to bother the dynamic linker. */
8390 if (SYMBOL_CALLS_LOCAL (info
, h
)
8391 || h
== htab
->elf
.hgot
)
8397 case R_PPC_ADDR14_BRTAKEN
:
8398 case R_PPC_ADDR14_BRNTAKEN
:
8399 if (h
!= NULL
&& !info
->shared
)
8404 if ((input_section
->flags
& SEC_ALLOC
) == 0
8410 && ((h
->root
.type
== bfd_link_hash_undefined
8411 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
8412 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
8413 || (h
->root
.type
== bfd_link_hash_undefweak
8414 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)))
8415 && (must_be_dyn_reloc (info
, r_type
)
8416 || !SYMBOL_CALLS_LOCAL (info
, h
)))
8417 || (ELIMINATE_COPY_RELOCS
8422 && !h
->def_regular
))
8428 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8429 "create relocation for %s\n",
8430 (h
&& h
->root
.root
.string
8431 ? h
->root
.root
.string
: "<unknown>"));
8434 /* When generating a shared object, these relocations
8435 are copied into the output file to be resolved at run
8437 sreloc
= elf_section_data (input_section
)->sreloc
;
8439 sreloc
= htab
->reliplt
;
8444 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8447 if (outrel
.r_offset
== (bfd_vma
) -1
8448 || outrel
.r_offset
== (bfd_vma
) -2)
8449 skip
= (int) outrel
.r_offset
;
8450 outrel
.r_offset
+= (input_section
->output_section
->vma
8451 + input_section
->output_offset
);
8454 memset (&outrel
, 0, sizeof outrel
);
8456 && (h
->root
.type
== bfd_link_hash_undefined
8457 || h
->root
.type
== bfd_link_hash_undefweak
))
8458 || !SYMBOL_REFERENCES_LOCAL (info
, h
))
8460 BFD_ASSERT (h
->dynindx
!= -1);
8461 unresolved_reloc
= FALSE
;
8462 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
8463 outrel
.r_addend
= rel
->r_addend
;
8467 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8469 if (r_type
!= R_PPC_ADDR32
)
8475 /* If we get here when building a static
8476 executable, then the libc startup function
8477 responsible for applying indirect function
8478 relocations is going to complain about
8480 If we get here when building a dynamic
8481 executable, it will be because we have
8482 a text relocation. The dynamic loader
8483 will set the text segment writable and
8484 non-executable to apply text relocations.
8485 So we'll segfault when trying to run the
8486 indirection function to resolve the reloc. */
8487 info
->callbacks
->einfo
8488 (_("%P: %H: relocation %s for indirect "
8489 "function %s unsupported\n"),
8490 input_bfd
, input_section
, rel
->r_offset
,
8495 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8497 else if (sec
== NULL
|| sec
->owner
== NULL
)
8499 bfd_set_error (bfd_error_bad_value
);
8506 /* We are turning this relocation into one
8507 against a section symbol. It would be
8508 proper to subtract the symbol's value,
8509 osec->vma, from the emitted reloc addend,
8510 but ld.so expects buggy relocs.
8511 FIXME: Why not always use a zero index? */
8512 osec
= sec
->output_section
;
8513 indx
= elf_section_data (osec
)->dynindx
;
8516 osec
= htab
->elf
.text_index_section
;
8517 indx
= elf_section_data (osec
)->dynindx
;
8519 BFD_ASSERT (indx
!= 0);
8522 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8523 indx
, osec
->name
, osec
->flags
,
8524 h
->root
.root
.string
);
8528 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8530 else if (ifunc
!= NULL
)
8531 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8533 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8536 loc
= sreloc
->contents
;
8537 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8538 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8543 /* This reloc will be computed at runtime. We clear the memory
8544 so that it contains predictable value. */
8546 && ((input_section
->flags
& SEC_ALLOC
) != 0
8547 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
8549 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
8556 case R_PPC_RELAX_PLT
:
8557 case R_PPC_RELAX_PLTREL24
:
8560 struct plt_entry
*ent
;
8561 bfd_vma got2_addend
= 0;
8563 if (r_type
== R_PPC_RELAX_PLTREL24
)
8566 got2_addend
= addend
;
8569 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
8570 if (htab
->plt_type
== PLT_NEW
)
8571 relocation
= (htab
->glink
->output_section
->vma
8572 + htab
->glink
->output_offset
8573 + ent
->glink_offset
);
8575 relocation
= (htab
->plt
->output_section
->vma
8576 + htab
->plt
->output_offset
8585 size_t insn_offset
= rel
->r_offset
;
8590 relocation
-= (input_section
->output_section
->vma
8591 + input_section
->output_offset
8592 + rel
->r_offset
- 4);
8593 stub
= shared_stub_entry
;
8594 bfd_put_32 (output_bfd
, stub
[0], contents
+ insn_offset
- 12);
8595 bfd_put_32 (output_bfd
, stub
[1], contents
+ insn_offset
- 8);
8596 bfd_put_32 (output_bfd
, stub
[2], contents
+ insn_offset
- 4);
8598 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
8603 size
= ARRAY_SIZE (stub_entry
);
8606 relocation
+= addend
;
8607 if (info
->relocatable
)
8610 /* First insn is HA, second is LO. */
8612 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
8613 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8617 insn
|= relocation
& 0xffff;
8618 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8626 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8630 /* Rewrite the reloc and convert one of the trailing nop
8631 relocs to describe this relocation. */
8632 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
8633 /* The relocs are at the bottom 2 bytes */
8634 rel
[0].r_offset
+= d_offset
;
8635 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8636 rel
[0].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
8637 rel
[1].r_offset
+= 4;
8638 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
8643 /* Indirect .sdata relocation. */
8644 case R_PPC_EMB_SDAI16
:
8645 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
8646 if (!is_static_defined (htab
->sdata
[0].sym
))
8648 unresolved_reloc
= TRUE
;
8652 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
8653 h
, relocation
, rel
);
8657 /* Indirect .sdata2 relocation. */
8658 case R_PPC_EMB_SDA2I16
:
8659 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
8660 if (!is_static_defined (htab
->sdata
[1].sym
))
8662 unresolved_reloc
= TRUE
;
8666 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
8667 h
, relocation
, rel
);
8671 /* Handle the TOC16 reloc. We want to use the offset within the .got
8672 section, not the actual VMA. This is appropriate when generating
8673 an embedded ELF object, for which the .got section acts like the
8674 AIX .toc section. */
8675 case R_PPC_TOC16
: /* phony GOT16 relocations */
8676 if (sec
== NULL
|| sec
->output_section
== NULL
)
8678 unresolved_reloc
= TRUE
;
8681 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
8683 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
8686 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
8689 case R_PPC_PLTREL24
:
8690 if (h
!= NULL
&& ifunc
== NULL
)
8692 struct plt_entry
*ent
= find_plt_ent (&h
->plt
.plist
, got2
,
8693 info
->shared
? addend
: 0);
8695 || htab
->plt
== NULL
)
8697 /* We didn't make a PLT entry for this symbol. This
8698 happens when statically linking PIC code, or when
8699 using -Bsymbolic. */
8703 /* Relocation is to the entry for this symbol in the
8704 procedure linkage table. */
8705 unresolved_reloc
= FALSE
;
8706 if (htab
->plt_type
== PLT_NEW
)
8707 relocation
= (htab
->glink
->output_section
->vma
8708 + htab
->glink
->output_offset
8709 + ent
->glink_offset
);
8711 relocation
= (htab
->plt
->output_section
->vma
8712 + htab
->plt
->output_offset
8717 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8718 addend specifies the GOT pointer offset within .got2.
8719 Don't apply it to the relocation field. */
8723 /* Relocate against _SDA_BASE_. */
8724 case R_PPC_SDAREL16
:
8727 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
8730 || sec
->output_section
== NULL
8731 || !is_static_defined (sda
))
8733 unresolved_reloc
= TRUE
;
8736 addend
-= SYM_VAL (sda
);
8738 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8739 if (!(strcmp (name
, ".sdata") == 0
8740 || strcmp (name
, ".sbss") == 0))
8742 info
->callbacks
->einfo
8743 (_("%P: %B: the target (%s) of a %s relocation is "
8744 "in the wrong output section (%s)\n"),
8753 /* Relocate against _SDA2_BASE_. */
8754 case R_PPC_EMB_SDA2REL
:
8757 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
8760 || sec
->output_section
== NULL
8761 || !is_static_defined (sda
))
8763 unresolved_reloc
= TRUE
;
8766 addend
-= SYM_VAL (sda
);
8768 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8769 if (!(strcmp (name
, ".sdata2") == 0
8770 || strcmp (name
, ".sbss2") == 0))
8772 info
->callbacks
->einfo
8773 (_("%P: %B: the target (%s) of a %s relocation is "
8774 "in the wrong output section (%s)\n"),
8783 case R_PPC_VLE_LO16A
:
8784 relocation
= relocation
+ addend
;
8785 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8786 relocation
, split16a_type
);
8789 case R_PPC_VLE_LO16D
:
8790 relocation
= relocation
+ addend
;
8791 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8792 relocation
, split16d_type
);
8795 case R_PPC_VLE_HI16A
:
8796 relocation
= (relocation
+ addend
) >> 16;
8797 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8798 relocation
, split16a_type
);
8801 case R_PPC_VLE_HI16D
:
8802 relocation
= (relocation
+ addend
) >> 16;
8803 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8804 relocation
, split16d_type
);
8807 case R_PPC_VLE_HA16A
:
8808 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
8809 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8810 relocation
, split16a_type
);
8813 case R_PPC_VLE_HA16D
:
8814 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
8815 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8816 relocation
, split16d_type
);
8819 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8820 case R_PPC_EMB_SDA21
:
8821 case R_PPC_VLE_SDA21
:
8822 case R_PPC_EMB_RELSDA
:
8823 case R_PPC_VLE_SDA21_LO
:
8828 struct elf_link_hash_entry
*sda
= NULL
;
8830 if (sec
== NULL
|| sec
->output_section
== NULL
)
8832 unresolved_reloc
= TRUE
;
8836 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8837 if (strcmp (name
, ".sdata") == 0
8838 || strcmp (name
, ".sbss") == 0)
8841 sda
= htab
->sdata
[0].sym
;
8843 else if (strcmp (name
, ".sdata2") == 0
8844 || strcmp (name
, ".sbss2") == 0)
8847 sda
= htab
->sdata
[1].sym
;
8849 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
8850 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
8856 info
->callbacks
->einfo
8857 (_("%P: %B: the target (%s) of a %s relocation is "
8858 "in the wrong output section (%s)\n"),
8864 bfd_set_error (bfd_error_bad_value
);
8871 if (!is_static_defined (sda
))
8873 unresolved_reloc
= TRUE
;
8876 addend
-= SYM_VAL (sda
);
8879 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
8881 && (r_type
== R_PPC_VLE_SDA21
8882 || r_type
== R_PPC_VLE_SDA21_LO
))
8884 relocation
= relocation
+ addend
;
8887 /* Force e_li insn, keeping RT from original insn. */
8891 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8892 /* Top 4 bits of value to 17..20. */
8893 insn
|= (relocation
& 0xf0000) >> 5;
8894 /* Next 5 bits of the value to 11..15. */
8895 insn
|= (relocation
& 0xf800) << 5;
8896 /* And the final 11 bits of the value to bits 21 to 31. */
8897 insn
|= relocation
& 0x7ff;
8899 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8901 if (r_type
== R_PPC_VLE_SDA21
8902 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
8906 else if (r_type
== R_PPC_EMB_SDA21
8907 || r_type
== R_PPC_VLE_SDA21
8908 || r_type
== R_PPC_VLE_SDA21_LO
)
8910 /* Fill in register field. */
8911 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
8913 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8917 case R_PPC_VLE_SDAREL_LO16A
:
8918 case R_PPC_VLE_SDAREL_LO16D
:
8919 case R_PPC_VLE_SDAREL_HI16A
:
8920 case R_PPC_VLE_SDAREL_HI16D
:
8921 case R_PPC_VLE_SDAREL_HA16A
:
8922 case R_PPC_VLE_SDAREL_HA16D
:
8927 struct elf_link_hash_entry
*sda
= NULL
;
8929 if (sec
== NULL
|| sec
->output_section
== NULL
)
8931 unresolved_reloc
= TRUE
;
8935 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8936 if (strcmp (name
, ".sdata") == 0
8937 || strcmp (name
, ".sbss") == 0)
8940 sda
= htab
->sdata
[0].sym
;
8942 else if (strcmp (name
, ".sdata2") == 0
8943 || strcmp (name
, ".sbss2") == 0)
8946 sda
= htab
->sdata
[1].sym
;
8950 (*_bfd_error_handler
)
8951 (_("%B: the target (%s) of a %s relocation is "
8952 "in the wrong output section (%s)"),
8958 bfd_set_error (bfd_error_bad_value
);
8965 if (!is_static_defined (sda
))
8967 unresolved_reloc
= TRUE
;
8972 value
= (sda
->root
.u
.def
.section
->output_section
->vma
8973 + sda
->root
.u
.def
.section
->output_offset
8976 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
8977 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8978 value
, split16a_type
);
8979 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
8980 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8981 value
, split16d_type
);
8982 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
8984 value
= value
>> 16;
8985 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8986 value
, split16a_type
);
8988 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
8990 value
= value
>> 16;
8991 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8992 value
, split16d_type
);
8994 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
8996 value
= (value
+ 0x8000) >> 16;
8997 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8998 value
, split16a_type
);
9000 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
9002 value
= (value
+ 0x8000) >> 16;
9003 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9004 value
, split16d_type
);
9009 /* Relocate against the beginning of the section. */
9011 case R_PPC_SECTOFF_LO
:
9012 case R_PPC_SECTOFF_HI
:
9013 case R_PPC_SECTOFF_HA
:
9014 if (sec
== NULL
|| sec
->output_section
== NULL
)
9016 unresolved_reloc
= TRUE
;
9019 addend
-= sec
->output_section
->vma
;
9022 /* Negative relocations. */
9023 case R_PPC_EMB_NADDR32
:
9024 case R_PPC_EMB_NADDR16
:
9025 case R_PPC_EMB_NADDR16_LO
:
9026 case R_PPC_EMB_NADDR16_HI
:
9027 case R_PPC_EMB_NADDR16_HA
:
9028 addend
-= 2 * relocation
;
9032 case R_PPC_GLOB_DAT
:
9033 case R_PPC_JMP_SLOT
:
9034 case R_PPC_RELATIVE
:
9035 case R_PPC_IRELATIVE
:
9037 case R_PPC_PLTREL32
:
9038 case R_PPC_PLT16_LO
:
9039 case R_PPC_PLT16_HI
:
9040 case R_PPC_PLT16_HA
:
9042 case R_PPC_EMB_RELSEC16
:
9043 case R_PPC_EMB_RELST_LO
:
9044 case R_PPC_EMB_RELST_HI
:
9045 case R_PPC_EMB_RELST_HA
:
9046 case R_PPC_EMB_BIT_FLD
:
9047 info
->callbacks
->einfo
9048 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9053 bfd_set_error (bfd_error_invalid_operation
);
9058 /* Do any further special processing. */
9064 case R_PPC_ADDR16_HA
:
9065 case R_PPC_REL16_HA
:
9066 case R_PPC_SECTOFF_HA
:
9067 case R_PPC_TPREL16_HA
:
9068 case R_PPC_DTPREL16_HA
:
9069 case R_PPC_EMB_NADDR16_HA
:
9070 case R_PPC_EMB_RELST_HA
:
9071 /* It's just possible that this symbol is a weak symbol
9072 that's not actually defined anywhere. In that case,
9073 'sec' would be NULL, and we should leave the symbol
9074 alone (it will be set to zero elsewhere in the link). */
9079 case R_PPC_PLT16_HA
:
9080 case R_PPC_GOT16_HA
:
9081 case R_PPC_GOT_TLSGD16_HA
:
9082 case R_PPC_GOT_TLSLD16_HA
:
9083 case R_PPC_GOT_TPREL16_HA
:
9084 case R_PPC_GOT_DTPREL16_HA
:
9085 /* Add 0x10000 if sign bit in 0:15 is set.
9086 Bits 0:15 are not used. */
9091 case R_PPC_ADDR16_LO
:
9093 case R_PPC_GOT16_LO
:
9094 case R_PPC_SDAREL16
:
9096 case R_PPC_SECTOFF_LO
:
9097 case R_PPC_DTPREL16
:
9098 case R_PPC_DTPREL16_LO
:
9100 case R_PPC_TPREL16_LO
:
9101 case R_PPC_GOT_TLSGD16
:
9102 case R_PPC_GOT_TLSGD16_LO
:
9103 case R_PPC_GOT_TLSLD16
:
9104 case R_PPC_GOT_TLSLD16_LO
:
9105 case R_PPC_GOT_DTPREL16
:
9106 case R_PPC_GOT_DTPREL16_LO
:
9107 case R_PPC_GOT_TPREL16
:
9108 case R_PPC_GOT_TPREL16_LO
:
9110 /* The 32-bit ABI lacks proper relocations to deal with
9111 certain 64-bit instructions. Prevent damage to bits
9112 that make up part of the insn opcode. */
9113 unsigned int insn
, mask
, lobit
;
9115 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
9117 if (is_insn_ds_form (insn
))
9119 else if (is_insn_dq_form (insn
))
9123 lobit
= mask
& (relocation
+ addend
);
9127 info
->callbacks
->einfo
9128 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9129 input_bfd
, input_section
, rel
->r_offset
,
9130 howto
->name
, sym_name
, mask
+ 1);
9131 bfd_set_error (bfd_error_bad_value
);
9134 addend
+= insn
& mask
;
9140 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9141 "offset = %ld, addend = %ld\n",
9146 (long) rel
->r_offset
,
9150 if (unresolved_reloc
9151 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9153 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9154 rel
->r_offset
) != (bfd_vma
) -1)
9156 info
->callbacks
->einfo
9157 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9158 input_bfd
, input_section
, rel
->r_offset
,
9164 /* 16-bit fields in insns mostly have signed values, but a
9165 few insns have 16-bit unsigned values. Really, we should
9166 have different reloc types. */
9167 if (howto
->complain_on_overflow
!= complain_overflow_dont
9168 && howto
->dst_mask
== 0xffff
9169 && (input_section
->flags
& SEC_CODE
) != 0)
9171 enum complain_overflow complain
= complain_overflow_signed
;
9173 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9177 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9178 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9179 complain
= complain_overflow_bitfield
;
9180 else if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9181 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9182 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
9183 complain
= complain_overflow_unsigned
;
9185 if (howto
->complain_on_overflow
!= complain
)
9188 alt_howto
.complain_on_overflow
= complain
;
9193 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9194 rel
->r_offset
, relocation
, addend
);
9196 if (r
!= bfd_reloc_ok
)
9198 if (r
== bfd_reloc_overflow
)
9204 && h
->root
.type
== bfd_link_hash_undefweak
9205 && howto
->pc_relative
)
9207 /* Assume this is a call protected by other code that
9208 detect the symbol is undefined. If this is the case,
9209 we can safely ignore the overflow. If not, the
9210 program is hosed anyway, and a little warning isn't
9216 if (! (*info
->callbacks
->reloc_overflow
) (info
,
9217 (h
? &h
->root
: NULL
),
9228 info
->callbacks
->einfo
9229 (_("%P: %H: %s reloc against `%s': error %d\n"),
9230 input_bfd
, input_section
, rel
->r_offset
,
9231 howto
->name
, sym_name
, (int) r
);
9238 fprintf (stderr
, "\n");
9241 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9242 && input_section
->size
!= input_section
->rawsize
9243 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9244 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9246 /* Branch around the trampolines. */
9247 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9248 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9251 if (htab
->params
->ppc476_workaround
9252 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9253 && (!info
->relocatable
9254 || (input_section
->output_section
->alignment_power
9255 >= htab
->params
->pagesize_p2
)))
9257 struct ppc_elf_relax_info
*relax_info
;
9258 bfd_vma start_addr
, end_addr
, addr
;
9259 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9261 relax_info
= elf_section_data (input_section
)->sec_info
;
9262 if (relax_info
->workaround_size
!= 0)
9268 bfd_put_32 (input_bfd
, BA
, fill
);
9269 p
= contents
+ input_section
->size
- relax_info
->workaround_size
;
9270 n
= relax_info
->workaround_size
>> 2;
9273 memcpy (p
, fill
, 4);
9278 /* The idea is: Replace the last instruction on a page with a
9279 branch to a patch area. Put the insn there followed by a
9280 branch back to the next page. Complicated a little by
9281 needing to handle moved conditional branches, and by not
9282 wanting to touch data-in-text. */
9284 start_addr
= (input_section
->output_section
->vma
9285 + input_section
->output_offset
);
9286 end_addr
= (start_addr
+ input_section
->size
9287 - relax_info
->workaround_size
);
9288 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9292 bfd_vma offset
= addr
- start_addr
;
9293 Elf_Internal_Rela
*lo
, *hi
;
9294 bfd_boolean is_data
;
9295 bfd_vma patch_off
, patch_addr
;
9298 /* Do we have a data reloc at this offset? If so, leave
9306 rel
= lo
+ (hi
- lo
) / 2;
9307 if (rel
->r_offset
< offset
)
9309 else if (rel
->r_offset
> offset
+ 3)
9313 switch (ELF32_R_TYPE (rel
->r_info
))
9330 /* Some instructions can be left alone too. Unconditional
9331 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9332 avoid the icache failure.
9334 The problem occurs due to prefetch across a page boundary
9335 where stale instructions can be fetched from the next
9336 page, and the mechanism for flushing these bad
9337 instructions fails under certain circumstances. The
9338 unconditional branches:
9339 1) Branch: b, bl, ba, bla,
9340 2) Branch Conditional: bc, bca, bcl, bcla,
9341 3) Branch Conditional to Link Register: bclr, bclrl,
9342 where (2) and (3) have BO=0x14 making them unconditional,
9343 prevent the bad prefetch because the prefetch itself is
9344 affected by these instructions. This happens even if the
9345 instruction is not executed.
9350 . addi 9,9,new_page@l
9357 The bctr is not predicted taken due to ctr not being
9358 ready, so prefetch continues on past the bctr into the
9359 new page which might have stale instructions. If they
9360 fail to be flushed, then they will be executed after the
9361 bctr executes. Either of the following modifications
9362 prevent the bad prefetch from happening in the first
9365 . lis 9,new_page@ha lis 9,new_page@ha
9366 . addi 9,9,new_page@l addi 9,9,new_page@l
9369 . nop b somewhere_else
9370 . b somewhere_else nop
9371 . new_page: new_page:
9373 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9374 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9375 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9376 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9377 || ((insn
& (0x3f << 26)) == (19u << 26)
9378 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9379 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9382 patch_addr
= (start_addr
+ input_section
->size
9383 - relax_info
->workaround_size
);
9384 patch_addr
= (patch_addr
+ 15) & -16;
9385 patch_off
= patch_addr
- start_addr
;
9386 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9389 && rel
->r_offset
>= offset
9390 && rel
->r_offset
< offset
+ 4)
9392 /* If the insn we are patching had a reloc, adjust the
9393 reloc r_offset so that the reloc applies to the moved
9394 location. This matters for -r and --emit-relocs. */
9395 if (rel
+ 1 != relend
)
9397 Elf_Internal_Rela tmp
= *rel
;
9399 /* Keep the relocs sorted by r_offset. */
9400 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9403 relend
[-1].r_offset
+= patch_off
- offset
;
9408 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9409 && (insn
& 2) == 0 /* relative */)
9411 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
9413 delta
+= offset
- patch_off
;
9414 if (info
->relocatable
&& rel
!= NULL
)
9416 if (!info
->relocatable
&& rel
!= NULL
)
9418 enum elf_ppc_reloc_type r_type
;
9420 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
9421 if (r_type
== R_PPC_REL14_BRTAKEN
)
9422 insn
|= BRANCH_PREDICT_BIT
;
9423 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
9424 insn
&= ~BRANCH_PREDICT_BIT
;
9426 BFD_ASSERT (r_type
== R_PPC_REL14
);
9428 if ((r_type
== R_PPC_REL14_BRTAKEN
9429 || r_type
== R_PPC_REL14_BRNTAKEN
)
9430 && delta
+ 0x8000 < 0x10000
9431 && (bfd_signed_vma
) delta
< 0)
9432 insn
^= BRANCH_PREDICT_BIT
;
9434 if (delta
+ 0x8000 < 0x10000)
9436 bfd_put_32 (input_bfd
,
9437 (insn
& ~0xfffc) | (delta
& 0xfffc),
9438 contents
+ patch_off
);
9440 bfd_put_32 (input_bfd
,
9441 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9442 contents
+ patch_off
);
9449 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
9451 relend
[-1].r_offset
+= 8;
9452 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
9454 bfd_put_32 (input_bfd
,
9455 (insn
& ~0xfffc) | 8,
9456 contents
+ patch_off
);
9458 bfd_put_32 (input_bfd
,
9459 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9460 contents
+ patch_off
);
9462 bfd_put_32 (input_bfd
,
9463 B
| ((delta
- 8) & 0x3fffffc),
9464 contents
+ patch_off
);
9470 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
9472 bfd_put_32 (input_bfd
,
9473 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9474 contents
+ patch_off
);
9477 BFD_ASSERT (patch_off
<= input_section
->size
);
9478 relax_info
->workaround_size
= input_section
->size
- patch_off
;
9485 /* Finish up dynamic symbol handling. We set the contents of various
9486 dynamic sections here. */
9489 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9490 struct bfd_link_info
*info
,
9491 struct elf_link_hash_entry
*h
,
9492 Elf_Internal_Sym
*sym
)
9494 struct ppc_elf_link_hash_table
*htab
;
9495 struct plt_entry
*ent
;
9496 bfd_boolean doneone
;
9499 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
9500 h
->root
.root
.string
);
9503 htab
= ppc_elf_hash_table (info
);
9504 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
9507 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9508 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9512 Elf_Internal_Rela rela
;
9514 bfd_vma reloc_index
;
9516 if (htab
->plt_type
== PLT_NEW
9517 || !htab
->elf
.dynamic_sections_created
9518 || h
->dynindx
== -1)
9519 reloc_index
= ent
->plt
.offset
/ 4;
9522 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
9523 / htab
->plt_slot_size
);
9524 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
9525 && htab
->plt_type
== PLT_OLD
)
9526 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
9529 /* This symbol has an entry in the procedure linkage table.
9531 if (htab
->plt_type
== PLT_VXWORKS
9532 && htab
->elf
.dynamic_sections_created
9533 && h
->dynindx
!= -1)
9536 const bfd_vma
*plt_entry
;
9538 /* The first three entries in .got.plt are reserved. */
9539 got_offset
= (reloc_index
+ 3) * 4;
9541 /* Use the right PLT. */
9542 plt_entry
= info
->shared
? ppc_elf_vxworks_pic_plt_entry
9543 : ppc_elf_vxworks_plt_entry
;
9545 /* Fill in the .plt on VxWorks. */
9548 bfd_put_32 (output_bfd
,
9549 plt_entry
[0] | PPC_HA (got_offset
),
9550 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
9551 bfd_put_32 (output_bfd
,
9552 plt_entry
[1] | PPC_LO (got_offset
),
9553 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
9557 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
9559 bfd_put_32 (output_bfd
,
9560 plt_entry
[0] | PPC_HA (got_loc
),
9561 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
9562 bfd_put_32 (output_bfd
,
9563 plt_entry
[1] | PPC_LO (got_loc
),
9564 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
9567 bfd_put_32 (output_bfd
, plt_entry
[2],
9568 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
9569 bfd_put_32 (output_bfd
, plt_entry
[3],
9570 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
9572 /* This instruction is an immediate load. The value loaded is
9573 the byte offset of the R_PPC_JMP_SLOT relocation from the
9574 start of the .rela.plt section. The value is stored in the
9575 low-order 16 bits of the load instruction. */
9576 /* NOTE: It appears that this is now an index rather than a
9577 prescaled offset. */
9578 bfd_put_32 (output_bfd
,
9579 plt_entry
[4] | reloc_index
,
9580 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
9581 /* This instruction is a PC-relative branch whose target is
9582 the start of the PLT section. The address of this branch
9583 instruction is 20 bytes beyond the start of this PLT entry.
9584 The address is encoded in bits 6-29, inclusive. The value
9585 stored is right-shifted by two bits, permitting a 26-bit
9587 bfd_put_32 (output_bfd
,
9589 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
9590 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
9591 bfd_put_32 (output_bfd
, plt_entry
[6],
9592 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
9593 bfd_put_32 (output_bfd
, plt_entry
[7],
9594 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
9596 /* Fill in the GOT entry corresponding to this PLT slot with
9597 the address immediately after the "bctr" instruction
9598 in this PLT entry. */
9599 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
9600 + htab
->plt
->output_offset
9601 + ent
->plt
.offset
+ 16),
9602 htab
->sgotplt
->contents
+ got_offset
);
9606 /* Fill in a couple of entries in .rela.plt.unloaded. */
9607 loc
= htab
->srelplt2
->contents
9608 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
9609 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
9610 * sizeof (Elf32_External_Rela
));
9612 /* Provide the @ha relocation for the first instruction. */
9613 rela
.r_offset
= (htab
->plt
->output_section
->vma
9614 + htab
->plt
->output_offset
9615 + ent
->plt
.offset
+ 2);
9616 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
9618 rela
.r_addend
= got_offset
;
9619 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9620 loc
+= sizeof (Elf32_External_Rela
);
9622 /* Provide the @l relocation for the second instruction. */
9623 rela
.r_offset
= (htab
->plt
->output_section
->vma
9624 + htab
->plt
->output_offset
9625 + ent
->plt
.offset
+ 6);
9626 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
9628 rela
.r_addend
= got_offset
;
9629 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9630 loc
+= sizeof (Elf32_External_Rela
);
9632 /* Provide a relocation for the GOT entry corresponding to this
9633 PLT slot. Point it at the middle of the .plt entry. */
9634 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
9635 + htab
->sgotplt
->output_offset
9637 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
9639 rela
.r_addend
= ent
->plt
.offset
+ 16;
9640 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9643 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9644 In particular, the offset for the relocation is not the
9645 address of the PLT entry for this function, as specified
9646 by the ABI. Instead, the offset is set to the address of
9647 the GOT slot for this function. See EABI 4.4.4.1. */
9648 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
9649 + htab
->sgotplt
->output_offset
9655 asection
*splt
= htab
->plt
;
9656 if (!htab
->elf
.dynamic_sections_created
9657 || h
->dynindx
== -1)
9660 rela
.r_offset
= (splt
->output_section
->vma
9661 + splt
->output_offset
9663 if (htab
->plt_type
== PLT_OLD
9664 || !htab
->elf
.dynamic_sections_created
9665 || h
->dynindx
== -1)
9667 /* We don't need to fill in the .plt. The ppc dynamic
9668 linker will fill it in. */
9672 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
9673 + htab
->glink
->output_section
->vma
9674 + htab
->glink
->output_offset
);
9675 bfd_put_32 (output_bfd
, val
,
9676 splt
->contents
+ ent
->plt
.offset
);
9680 /* Fill in the entry in the .rela.plt section. */
9682 if (!htab
->elf
.dynamic_sections_created
9683 || h
->dynindx
== -1)
9685 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
9687 && (h
->root
.type
== bfd_link_hash_defined
9688 || h
->root
.type
== bfd_link_hash_defweak
));
9689 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
9690 rela
.r_addend
= SYM_VAL (h
);
9693 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
9695 if (!htab
->elf
.dynamic_sections_created
9696 || h
->dynindx
== -1)
9697 loc
= (htab
->reliplt
->contents
9698 + (htab
->reliplt
->reloc_count
++
9699 * sizeof (Elf32_External_Rela
)));
9701 loc
= (htab
->relplt
->contents
9702 + reloc_index
* sizeof (Elf32_External_Rela
));
9703 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9705 if (!h
->def_regular
)
9707 /* Mark the symbol as undefined, rather than as
9708 defined in the .plt section. Leave the value if
9709 there were any relocations where pointer equality
9710 matters (this is a clue for the dynamic linker, to
9711 make function pointer comparisons work between an
9712 application and shared library), otherwise set it
9714 sym
->st_shndx
= SHN_UNDEF
;
9715 if (!h
->pointer_equality_needed
)
9717 else if (!h
->ref_regular_nonweak
)
9719 /* This breaks function pointer comparisons, but
9720 that is better than breaking tests for a NULL
9721 function pointer. */
9725 else if (h
->type
== STT_GNU_IFUNC
9728 /* Set the value of ifunc symbols in a non-pie
9729 executable to the glink entry. This is to avoid
9730 text relocations. We can't do this for ifunc in
9731 allocate_dynrelocs, as we do for normal dynamic
9732 function symbols with plt entries, because we need
9733 to keep the original value around for the ifunc
9735 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
9736 (output_bfd
, htab
->glink
->output_section
));
9737 sym
->st_value
= (ent
->glink_offset
9738 + htab
->glink
->output_offset
9739 + htab
->glink
->output_section
->vma
);
9744 if (htab
->plt_type
== PLT_NEW
9745 || !htab
->elf
.dynamic_sections_created
9746 || h
->dynindx
== -1)
9749 asection
*splt
= htab
->plt
;
9750 if (!htab
->elf
.dynamic_sections_created
9751 || h
->dynindx
== -1)
9754 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
9756 if (h
== htab
->tls_get_addr
&& !htab
->params
->no_tls_get_addr_opt
)
9758 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
9760 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
9762 bfd_put_32 (output_bfd
, MR_0_3
, p
);
9764 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
9766 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
9768 bfd_put_32 (output_bfd
, BEQLR
, p
);
9770 bfd_put_32 (output_bfd
, MR_3_0
, p
);
9772 bfd_put_32 (output_bfd
, NOP
, p
);
9776 write_glink_stub (ent
, splt
, p
, info
);
9779 /* We only need one non-PIC glink stub. */
9789 Elf_Internal_Rela rela
;
9792 /* This symbols needs a copy reloc. Set it up. */
9795 fprintf (stderr
, ", copy");
9798 BFD_ASSERT (h
->dynindx
!= -1);
9800 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
9804 BFD_ASSERT (s
!= NULL
);
9806 rela
.r_offset
= SYM_VAL (h
);
9807 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
9809 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
9810 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9814 fprintf (stderr
, "\n");
9820 static enum elf_reloc_type_class
9821 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
9822 const asection
*rel_sec
,
9823 const Elf_Internal_Rela
*rela
)
9825 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
9827 if (rel_sec
== htab
->reliplt
)
9828 return reloc_class_ifunc
;
9830 switch (ELF32_R_TYPE (rela
->r_info
))
9832 case R_PPC_RELATIVE
:
9833 return reloc_class_relative
;
9834 case R_PPC_JMP_SLOT
:
9835 return reloc_class_plt
;
9837 return reloc_class_copy
;
9839 return reloc_class_normal
;
9843 /* Finish up the dynamic sections. */
9846 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
9847 struct bfd_link_info
*info
)
9851 struct ppc_elf_link_hash_table
*htab
;
9854 bfd_boolean ret
= TRUE
;
9857 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
9860 htab
= ppc_elf_hash_table (info
);
9861 dynobj
= elf_hash_table (info
)->dynobj
;
9862 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
9863 if (htab
->is_vxworks
)
9864 splt
= bfd_get_linker_section (dynobj
, ".plt");
9869 if (htab
->elf
.hgot
!= NULL
)
9870 got
= SYM_VAL (htab
->elf
.hgot
);
9872 if (htab
->elf
.dynamic_sections_created
)
9874 Elf32_External_Dyn
*dyncon
, *dynconend
;
9876 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
9878 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
9879 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9880 for (; dyncon
< dynconend
; dyncon
++)
9882 Elf_Internal_Dyn dyn
;
9885 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9890 if (htab
->is_vxworks
)
9894 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9898 dyn
.d_un
.d_val
= htab
->relplt
->size
;
9903 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9907 dyn
.d_un
.d_ptr
= got
;
9911 if (htab
->is_vxworks
)
9914 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
9920 if (htab
->is_vxworks
9921 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
9926 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9930 if (htab
->got
!= NULL
)
9932 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->got
9933 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->sgotplt
)
9935 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
9937 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
9938 if (htab
->plt_type
== PLT_OLD
)
9940 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9941 so that a function can easily find the address of
9942 _GLOBAL_OFFSET_TABLE_. */
9943 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
9944 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
9945 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
9950 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
9951 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
9952 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
9953 bfd_put_32 (output_bfd
, val
, p
);
9958 info
->callbacks
->einfo (_("%P: %s not defined in linker created %s\n"),
9959 htab
->elf
.hgot
->root
.root
.string
,
9960 (htab
->sgotplt
!= NULL
9961 ? htab
->sgotplt
->name
: htab
->got
->name
));
9962 bfd_set_error (bfd_error_bad_value
);
9966 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
9969 /* Fill in the first entry in the VxWorks procedure linkage table. */
9970 if (splt
&& splt
->size
> 0)
9972 /* Use the right PLT. */
9973 const bfd_vma
*plt_entry
= (info
->shared
9974 ? ppc_elf_vxworks_pic_plt0_entry
9975 : ppc_elf_vxworks_plt0_entry
);
9979 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
9981 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
9982 splt
->contents
+ 0);
9983 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
9984 splt
->contents
+ 4);
9988 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
9989 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
9991 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
9992 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
9993 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
9994 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
9995 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
9996 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
10000 Elf_Internal_Rela rela
;
10003 loc
= htab
->srelplt2
->contents
;
10005 /* Output the @ha relocation for the first instruction. */
10006 rela
.r_offset
= (htab
->plt
->output_section
->vma
10007 + htab
->plt
->output_offset
10009 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10011 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10012 loc
+= sizeof (Elf32_External_Rela
);
10014 /* Output the @l relocation for the second instruction. */
10015 rela
.r_offset
= (htab
->plt
->output_section
->vma
10016 + htab
->plt
->output_offset
10018 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10020 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10021 loc
+= sizeof (Elf32_External_Rela
);
10023 /* Fix up the remaining relocations. They may have the wrong
10024 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10025 in which symbols were output. */
10026 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
10028 Elf_Internal_Rela rel
;
10030 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10031 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10032 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10033 loc
+= sizeof (Elf32_External_Rela
);
10035 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10036 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10037 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10038 loc
+= sizeof (Elf32_External_Rela
);
10040 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10041 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
10042 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10043 loc
+= sizeof (Elf32_External_Rela
);
10048 if (htab
->glink
!= NULL
10049 && htab
->glink
->contents
!= NULL
10050 && htab
->elf
.dynamic_sections_created
)
10053 unsigned char *endp
;
10058 * PIC glink code is the following:
10060 * # ith PLT code stub.
10061 * addis 11,30,(plt+(i-1)*4-got)@ha
10062 * lwz 11,(plt+(i-1)*4-got)@l(11)
10066 * # A table of branches, one for each plt entry.
10067 * # The idea is that the plt call stub loads ctr and r11 with these
10068 * # addresses, so (r11 - res_0) gives the plt index * 4.
10069 * res_0: b PLTresolve
10070 * res_1: b PLTresolve
10072 * # Some number of entries towards the end can be nops
10078 * addis 11,11,(1f-res_0)@ha
10081 * 1: addi 11,11,(1b-res_0)@l
10084 * sub 11,11,12 # r11 = index * 4
10085 * addis 12,12,(got+4-1b)@ha
10086 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10087 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10090 * add 11,0,11 # r11 = index * 12 = reloc offset.
10093 static const unsigned int pic_plt_resolve
[] =
10114 * Non-PIC glink code is a little simpler.
10116 * # ith PLT code stub.
10117 * lis 11,(plt+(i-1)*4)@ha
10118 * lwz 11,(plt+(i-1)*4)@l(11)
10122 * The branch table is the same, then comes
10125 * lis 12,(got+4)@ha
10126 * addis 11,11,(-res_0)@ha
10127 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10128 * addi 11,11,(-res_0)@l # r11 = index * 4
10131 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10132 * add 11,0,11 # r11 = index * 12 = reloc offset.
10135 static const unsigned int plt_resolve
[] =
10155 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10157 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10160 /* Build the branch table, one for each plt entry (less one),
10161 and perhaps some padding. */
10162 p
= htab
->glink
->contents
;
10163 p
+= htab
->glink_pltresolve
;
10164 endp
= htab
->glink
->contents
;
10165 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10166 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10168 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10173 bfd_put_32 (output_bfd
, NOP
, p
);
10177 res0
= (htab
->glink_pltresolve
10178 + htab
->glink
->output_section
->vma
10179 + htab
->glink
->output_offset
);
10181 if (htab
->params
->ppc476_workaround
)
10183 /* Ensure that a call stub at the end of a page doesn't
10184 result in prefetch over the end of the page into the
10185 glink branch table. */
10186 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10188 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10189 + htab
->glink
->output_offset
);
10191 for (page_addr
= res0
& -pagesize
;
10192 page_addr
> glink_start
;
10193 page_addr
-= pagesize
)
10195 /* We have a plt call stub that may need fixing. */
10199 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10200 insn
= bfd_get_32 (output_bfd
, loc
);
10203 /* By alignment, we know that there must be at least
10204 one other call stub before this one. */
10205 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10207 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10209 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10214 /* Last comes the PLTresolve stub. */
10219 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
10221 unsigned int insn
= pic_plt_resolve
[i
];
10223 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10225 bfd_put_32 (output_bfd
, insn
, p
);
10228 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
10230 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10231 + htab
->glink
->output_section
->vma
10232 + htab
->glink
->output_offset
);
10234 bfd_put_32 (output_bfd
,
10235 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
10236 bfd_put_32 (output_bfd
,
10237 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
10238 bfd_put_32 (output_bfd
,
10239 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
10240 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10242 bfd_put_32 (output_bfd
,
10243 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10244 bfd_put_32 (output_bfd
,
10245 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
10249 bfd_put_32 (output_bfd
,
10250 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10251 bfd_put_32 (output_bfd
,
10252 LWZ_12_12
+ 4, p
+ 9*4);
10257 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
10259 unsigned int insn
= plt_resolve
[i
];
10261 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10263 bfd_put_32 (output_bfd
, insn
, p
);
10266 p
-= 4 * ARRAY_SIZE (plt_resolve
);
10268 bfd_put_32 (output_bfd
,
10269 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
10270 bfd_put_32 (output_bfd
,
10271 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
10272 bfd_put_32 (output_bfd
,
10273 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
10274 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10276 bfd_put_32 (output_bfd
,
10277 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10278 bfd_put_32 (output_bfd
,
10279 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
10283 bfd_put_32 (output_bfd
,
10284 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10285 bfd_put_32 (output_bfd
,
10286 LWZ_12_12
+ 4, p
+ 6*4);
10291 if (htab
->glink_eh_frame
!= NULL
10292 && htab
->glink_eh_frame
->contents
!= NULL
)
10294 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10297 p
+= sizeof (glink_eh_frame_cie
);
10302 /* Offset to .glink. */
10303 val
= (htab
->glink
->output_section
->vma
10304 + htab
->glink
->output_offset
);
10305 val
-= (htab
->glink_eh_frame
->output_section
->vma
10306 + htab
->glink_eh_frame
->output_offset
);
10307 val
-= p
- htab
->glink_eh_frame
->contents
;
10308 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10310 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10311 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10312 htab
->glink_eh_frame
,
10313 htab
->glink_eh_frame
->contents
))
10320 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10321 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10322 #define TARGET_BIG_SYM powerpc_elf32_vec
10323 #define TARGET_BIG_NAME "elf32-powerpc"
10324 #define ELF_ARCH bfd_arch_powerpc
10325 #define ELF_TARGET_ID PPC32_ELF_DATA
10326 #define ELF_MACHINE_CODE EM_PPC
10327 #ifdef __QNXTARGET__
10328 #define ELF_MAXPAGESIZE 0x1000
10330 #define ELF_MAXPAGESIZE 0x10000
10332 #define ELF_MINPAGESIZE 0x1000
10333 #define ELF_COMMONPAGESIZE 0x1000
10334 #define elf_info_to_howto ppc_elf_info_to_howto
10336 #ifdef EM_CYGNUS_POWERPC
10337 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10341 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10344 #define elf_backend_plt_not_loaded 1
10345 #define elf_backend_can_gc_sections 1
10346 #define elf_backend_can_refcount 1
10347 #define elf_backend_rela_normal 1
10348 #define elf_backend_caches_rawsize 1
10350 #define bfd_elf32_mkobject ppc_elf_mkobject
10351 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10352 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10353 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10354 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10355 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10356 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10357 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10359 #define elf_backend_object_p ppc_elf_object_p
10360 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10361 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10362 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10363 #define elf_backend_relocate_section ppc_elf_relocate_section
10364 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10365 #define elf_backend_check_relocs ppc_elf_check_relocs
10366 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10367 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10368 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10369 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10370 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10371 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10372 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10373 #define elf_backend_fake_sections ppc_elf_fake_sections
10374 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10375 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10376 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10377 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10378 #define elf_backend_write_core_note ppc_elf_write_core_note
10379 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10380 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10381 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10382 #define elf_backend_write_section ppc_elf_write_section
10383 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10384 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10385 #define elf_backend_action_discarded ppc_elf_action_discarded
10386 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10387 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10388 #define elf_backend_section_processing ppc_elf_section_processing
10390 #include "elf32-target.h"
10392 /* FreeBSD Target */
10394 #undef TARGET_LITTLE_SYM
10395 #undef TARGET_LITTLE_NAME
10397 #undef TARGET_BIG_SYM
10398 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10399 #undef TARGET_BIG_NAME
10400 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10403 #define ELF_OSABI ELFOSABI_FREEBSD
10406 #define elf32_bed elf32_powerpc_fbsd_bed
10408 #include "elf32-target.h"
10410 /* VxWorks Target */
10412 #undef TARGET_LITTLE_SYM
10413 #undef TARGET_LITTLE_NAME
10415 #undef TARGET_BIG_SYM
10416 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10417 #undef TARGET_BIG_NAME
10418 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10422 /* VxWorks uses the elf default section flags for .plt. */
10423 static const struct bfd_elf_special_section
*
10424 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
10426 if (sec
->name
== NULL
)
10429 if (strcmp (sec
->name
, ".plt") == 0)
10430 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
10432 return ppc_elf_get_sec_type_attr (abfd
, sec
);
10435 /* Like ppc_elf_link_hash_table_create, but overrides
10436 appropriately for VxWorks. */
10437 static struct bfd_link_hash_table
*
10438 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
10440 struct bfd_link_hash_table
*ret
;
10442 ret
= ppc_elf_link_hash_table_create (abfd
);
10445 struct ppc_elf_link_hash_table
*htab
10446 = (struct ppc_elf_link_hash_table
*)ret
;
10447 htab
->is_vxworks
= 1;
10448 htab
->plt_type
= PLT_VXWORKS
;
10449 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
10450 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
10451 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
10456 /* Tweak magic VxWorks symbols as they are loaded. */
10458 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
10459 struct bfd_link_info
*info
,
10460 Elf_Internal_Sym
*sym
,
10461 const char **namep ATTRIBUTE_UNUSED
,
10462 flagword
*flagsp ATTRIBUTE_UNUSED
,
10466 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
10470 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
10474 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10476 ppc_elf_final_write_processing(abfd
, linker
);
10477 elf_vxworks_final_write_processing(abfd
, linker
);
10480 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10482 #undef elf_backend_want_plt_sym
10483 #define elf_backend_want_plt_sym 1
10484 #undef elf_backend_want_got_plt
10485 #define elf_backend_want_got_plt 1
10486 #undef elf_backend_got_symbol_offset
10487 #define elf_backend_got_symbol_offset 0
10488 #undef elf_backend_plt_not_loaded
10489 #define elf_backend_plt_not_loaded 0
10490 #undef elf_backend_plt_readonly
10491 #define elf_backend_plt_readonly 1
10492 #undef elf_backend_got_header_size
10493 #define elf_backend_got_header_size 12
10495 #undef bfd_elf32_get_synthetic_symtab
10497 #undef bfd_elf32_bfd_link_hash_table_create
10498 #define bfd_elf32_bfd_link_hash_table_create \
10499 ppc_elf_vxworks_link_hash_table_create
10500 #undef elf_backend_add_symbol_hook
10501 #define elf_backend_add_symbol_hook \
10502 ppc_elf_vxworks_add_symbol_hook
10503 #undef elf_backend_link_output_symbol_hook
10504 #define elf_backend_link_output_symbol_hook \
10505 elf_vxworks_link_output_symbol_hook
10506 #undef elf_backend_final_write_processing
10507 #define elf_backend_final_write_processing \
10508 ppc_elf_vxworks_final_write_processing
10509 #undef elf_backend_get_sec_type_attr
10510 #define elf_backend_get_sec_type_attr \
10511 ppc_elf_vxworks_get_sec_type_attr
10512 #undef elf_backend_emit_relocs
10513 #define elf_backend_emit_relocs \
10514 elf_vxworks_emit_relocs
10517 #define elf32_bed ppc_elf_vxworks_bed
10518 #undef elf_backend_post_process_headers
10520 #include "elf32-target.h"