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");
3342 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
3344 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3348 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
3349 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3350 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
3353 || !bfd_set_section_alignment (abfd
, s
,
3354 htab
->params
->ppc476_workaround
? 6 : 4))
3357 if (!info
->no_ld_generated_unwind_info
)
3359 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3360 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3361 s
= bfd_make_section_anyway_with_flags (abfd
, ".eh_frame", flags
);
3362 htab
->glink_eh_frame
= s
;
3364 || !bfd_set_section_alignment (abfd
, s
, 2))
3368 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
3369 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
3372 || !bfd_set_section_alignment (abfd
, s
, 4))
3375 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3376 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3377 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.iplt", flags
);
3380 || ! bfd_set_section_alignment (abfd
, s
, 2))
3385 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3386 to output sections (just like _bfd_elf_create_dynamic_sections has
3387 to create .dynbss and .rela.bss). */
3390 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3392 struct ppc_elf_link_hash_table
*htab
;
3396 htab
= ppc_elf_hash_table (info
);
3398 if (htab
->got
== NULL
3399 && !ppc_elf_create_got (abfd
, info
))
3402 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
3405 if (htab
->glink
== NULL
3406 && !ppc_elf_create_glink (abfd
, info
))
3409 htab
->dynbss
= bfd_get_linker_section (abfd
, ".dynbss");
3410 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynsbss",
3411 SEC_ALLOC
| SEC_LINKER_CREATED
);
3418 htab
->relbss
= bfd_get_linker_section (abfd
, ".rela.bss");
3419 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3420 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3421 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.sbss", flags
);
3424 || ! bfd_set_section_alignment (abfd
, s
, 2))
3428 if (htab
->is_vxworks
3429 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
3432 htab
->relplt
= bfd_get_linker_section (abfd
, ".rela.plt");
3433 htab
->plt
= s
= bfd_get_linker_section (abfd
, ".plt");
3437 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
3438 if (htab
->plt_type
== PLT_VXWORKS
)
3439 /* The VxWorks PLT is a loaded section with contents. */
3440 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3441 return bfd_set_section_flags (abfd
, s
, flags
);
3444 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3447 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3448 struct elf_link_hash_entry
*dir
,
3449 struct elf_link_hash_entry
*ind
)
3451 struct ppc_elf_link_hash_entry
*edir
, *eind
;
3453 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
3454 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
3456 edir
->tls_mask
|= eind
->tls_mask
;
3457 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3459 /* If called to transfer flags for a weakdef during processing
3460 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3461 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3462 if (!(ELIMINATE_COPY_RELOCS
3463 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3464 && edir
->elf
.dynamic_adjusted
))
3465 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3467 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3468 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3469 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3470 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3471 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3473 if (eind
->dyn_relocs
!= NULL
)
3475 if (edir
->dyn_relocs
!= NULL
)
3477 struct elf_dyn_relocs
**pp
;
3478 struct elf_dyn_relocs
*p
;
3480 /* Add reloc counts against the indirect sym to the direct sym
3481 list. Merge any entries against the same section. */
3482 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3484 struct elf_dyn_relocs
*q
;
3486 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3487 if (q
->sec
== p
->sec
)
3489 q
->pc_count
+= p
->pc_count
;
3490 q
->count
+= p
->count
;
3497 *pp
= edir
->dyn_relocs
;
3500 edir
->dyn_relocs
= eind
->dyn_relocs
;
3501 eind
->dyn_relocs
= NULL
;
3504 /* If we were called to copy over info for a weak sym, that's all.
3505 You might think dyn_relocs need not be copied over; After all,
3506 both syms will be dynamic or both non-dynamic so we're just
3507 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3508 code in ppc_elf_adjust_dynamic_symbol needs to check for
3509 dyn_relocs in read-only sections, and it does so on what is the
3511 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3514 /* Copy over the GOT refcount entries that we may have already seen to
3515 the symbol which just became indirect. */
3516 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3517 eind
->elf
.got
.refcount
= 0;
3519 /* And plt entries. */
3520 if (eind
->elf
.plt
.plist
!= NULL
)
3522 if (edir
->elf
.plt
.plist
!= NULL
)
3524 struct plt_entry
**entp
;
3525 struct plt_entry
*ent
;
3527 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3529 struct plt_entry
*dent
;
3531 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3532 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3534 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3541 *entp
= edir
->elf
.plt
.plist
;
3544 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3545 eind
->elf
.plt
.plist
= NULL
;
3548 if (eind
->elf
.dynindx
!= -1)
3550 if (edir
->elf
.dynindx
!= -1)
3551 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3552 edir
->elf
.dynstr_index
);
3553 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3554 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3555 eind
->elf
.dynindx
= -1;
3556 eind
->elf
.dynstr_index
= 0;
3560 /* Hook called by the linker routine which adds symbols from an object
3561 file. We use it to put .comm items in .sbss, and not .bss. */
3564 ppc_elf_add_symbol_hook (bfd
*abfd
,
3565 struct bfd_link_info
*info
,
3566 Elf_Internal_Sym
*sym
,
3567 const char **namep ATTRIBUTE_UNUSED
,
3568 flagword
*flagsp ATTRIBUTE_UNUSED
,
3572 if (sym
->st_shndx
== SHN_COMMON
3573 && !info
->relocatable
3574 && is_ppc_elf (info
->output_bfd
)
3575 && sym
->st_size
<= elf_gp_size (abfd
))
3577 /* Common symbols less than or equal to -G nn bytes are automatically
3579 struct ppc_elf_link_hash_table
*htab
;
3581 htab
= ppc_elf_hash_table (info
);
3582 if (htab
->sbss
== NULL
)
3584 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3586 if (!htab
->elf
.dynobj
)
3587 htab
->elf
.dynobj
= abfd
;
3589 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3592 if (htab
->sbss
== NULL
)
3597 *valp
= sym
->st_size
;
3600 if ((abfd
->flags
& DYNAMIC
) == 0
3601 && (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3602 || ELF_ST_BIND (sym
->st_info
) == STB_GNU_UNIQUE
))
3603 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
3609 create_sdata_sym (struct bfd_link_info
*info
, elf_linker_section_t
*lsect
)
3611 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3613 lsect
->sym
= elf_link_hash_lookup (&htab
->elf
, lsect
->sym_name
,
3615 if (lsect
->sym
== NULL
)
3617 if (lsect
->sym
->root
.type
== bfd_link_hash_new
)
3618 lsect
->sym
->non_elf
= 0;
3619 lsect
->sym
->ref_regular
= 1;
3620 _bfd_elf_link_hash_hide_symbol (info
, lsect
->sym
, TRUE
);
3624 /* Create a special linker section. */
3627 ppc_elf_create_linker_section (bfd
*abfd
,
3628 struct bfd_link_info
*info
,
3630 elf_linker_section_t
*lsect
)
3632 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3635 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3636 | SEC_LINKER_CREATED
);
3638 /* Record the first bfd that needs the special sections. */
3639 if (!htab
->elf
.dynobj
)
3640 htab
->elf
.dynobj
= abfd
;
3642 s
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3646 || !bfd_set_section_alignment (htab
->elf
.dynobj
, s
, 2))
3650 return create_sdata_sym (info
, lsect
);
3653 /* Find a linker generated pointer with a given addend and type. */
3655 static elf_linker_section_pointers_t
*
3656 elf_find_pointer_linker_section
3657 (elf_linker_section_pointers_t
*linker_pointers
,
3659 elf_linker_section_t
*lsect
)
3661 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3662 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3663 return linker_pointers
;
3668 /* Allocate a pointer to live in a linker created section. */
3671 elf_create_pointer_linker_section (bfd
*abfd
,
3672 elf_linker_section_t
*lsect
,
3673 struct elf_link_hash_entry
*h
,
3674 const Elf_Internal_Rela
*rel
)
3676 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3677 elf_linker_section_pointers_t
*linker_section_ptr
;
3678 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3681 BFD_ASSERT (lsect
!= NULL
);
3683 /* Is this a global symbol? */
3686 struct ppc_elf_link_hash_entry
*eh
;
3688 /* Has this symbol already been allocated? If so, our work is done. */
3689 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3690 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3695 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3699 BFD_ASSERT (is_ppc_elf (abfd
));
3701 /* Allocation of a pointer to a local symbol. */
3702 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3704 /* Allocate a table to hold the local symbols if first time. */
3707 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3710 amt
*= sizeof (elf_linker_section_pointers_t
*);
3711 ptr
= bfd_zalloc (abfd
, amt
);
3716 elf_local_ptr_offsets (abfd
) = ptr
;
3719 /* Has this symbol already been allocated? If so, our work is done. */
3720 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3725 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3728 /* Allocate space for a pointer in the linker section, and allocate
3729 a new pointer record from internal memory. */
3730 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3731 amt
= sizeof (elf_linker_section_pointers_t
);
3732 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3734 if (!linker_section_ptr
)
3737 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3738 linker_section_ptr
->addend
= rel
->r_addend
;
3739 linker_section_ptr
->lsect
= lsect
;
3740 *ptr_linker_section_ptr
= linker_section_ptr
;
3742 linker_section_ptr
->offset
= lsect
->section
->size
;
3743 lsect
->section
->size
+= 4;
3747 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3748 lsect
->name
, (long) linker_section_ptr
->offset
,
3749 (long) lsect
->section
->size
);
3755 static struct plt_entry
**
3756 update_local_sym_info (bfd
*abfd
,
3757 Elf_Internal_Shdr
*symtab_hdr
,
3758 unsigned long r_symndx
,
3761 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3762 struct plt_entry
**local_plt
;
3763 char *local_got_tls_masks
;
3765 if (local_got_refcounts
== NULL
)
3767 bfd_size_type size
= symtab_hdr
->sh_info
;
3769 size
*= (sizeof (*local_got_refcounts
)
3770 + sizeof (*local_plt
)
3771 + sizeof (*local_got_tls_masks
));
3772 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3773 if (local_got_refcounts
== NULL
)
3775 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3778 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3779 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3780 local_got_tls_masks
[r_symndx
] |= tls_type
;
3781 if (tls_type
!= PLT_IFUNC
)
3782 local_got_refcounts
[r_symndx
] += 1;
3783 return local_plt
+ r_symndx
;
3787 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3788 asection
*sec
, bfd_vma addend
)
3790 struct plt_entry
*ent
;
3794 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3795 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3799 bfd_size_type amt
= sizeof (*ent
);
3800 ent
= bfd_alloc (abfd
, amt
);
3805 ent
->addend
= addend
;
3806 ent
->plt
.refcount
= 0;
3809 ent
->plt
.refcount
+= 1;
3813 static struct plt_entry
*
3814 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3816 struct plt_entry
*ent
;
3820 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3821 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3827 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3829 return (r_type
== R_PPC_PLTREL24
3830 || r_type
== R_PPC_LOCAL24PC
3831 || r_type
== R_PPC_REL24
3832 || r_type
== R_PPC_REL14
3833 || r_type
== R_PPC_REL14_BRTAKEN
3834 || r_type
== R_PPC_REL14_BRNTAKEN
3835 || r_type
== R_PPC_ADDR24
3836 || r_type
== R_PPC_ADDR14
3837 || r_type
== R_PPC_ADDR14_BRTAKEN
3838 || r_type
== R_PPC_ADDR14_BRNTAKEN
);
3842 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3844 (*_bfd_error_handler
)
3845 (_("%B: relocation %s cannot be used when making a shared object"),
3847 ppc_elf_howto_table
[r_type
]->name
);
3848 bfd_set_error (bfd_error_bad_value
);
3851 /* Look through the relocs for a section during the first phase, and
3852 allocate space in the global offset table or procedure linkage
3856 ppc_elf_check_relocs (bfd
*abfd
,
3857 struct bfd_link_info
*info
,
3859 const Elf_Internal_Rela
*relocs
)
3861 struct ppc_elf_link_hash_table
*htab
;
3862 Elf_Internal_Shdr
*symtab_hdr
;
3863 struct elf_link_hash_entry
**sym_hashes
;
3864 const Elf_Internal_Rela
*rel
;
3865 const Elf_Internal_Rela
*rel_end
;
3866 asection
*got2
, *sreloc
;
3867 struct elf_link_hash_entry
*tga
;
3869 if (info
->relocatable
)
3872 /* Don't do anything special with non-loaded, non-alloced sections.
3873 In particular, any relocs in such sections should not affect GOT
3874 and PLT reference counting (ie. we don't allow them to create GOT
3875 or PLT entries), there's no possibility or desire to optimize TLS
3876 relocs, and there's not much point in propagating relocs to shared
3877 libs that the dynamic linker won't relocate. */
3878 if ((sec
->flags
& SEC_ALLOC
) == 0)
3882 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3886 BFD_ASSERT (is_ppc_elf (abfd
));
3888 /* Initialize howto table if not already done. */
3889 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3890 ppc_elf_howto_init ();
3892 htab
= ppc_elf_hash_table (info
);
3893 if (htab
->glink
== NULL
)
3895 if (htab
->elf
.dynobj
== NULL
)
3896 htab
->elf
.dynobj
= abfd
;
3897 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
3900 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3901 FALSE
, FALSE
, TRUE
);
3902 symtab_hdr
= &elf_symtab_hdr (abfd
);
3903 sym_hashes
= elf_sym_hashes (abfd
);
3904 got2
= bfd_get_section_by_name (abfd
, ".got2");
3907 rel_end
= relocs
+ sec
->reloc_count
;
3908 for (rel
= relocs
; rel
< rel_end
; rel
++)
3910 unsigned long r_symndx
;
3911 enum elf_ppc_reloc_type r_type
;
3912 struct elf_link_hash_entry
*h
;
3915 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3916 if (r_symndx
< symtab_hdr
->sh_info
)
3920 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3921 while (h
->root
.type
== bfd_link_hash_indirect
3922 || h
->root
.type
== bfd_link_hash_warning
)
3923 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3925 /* PR15323, ref flags aren't set for references in the same
3927 h
->root
.non_ir_ref
= 1;
3930 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3931 This shows up in particular in an R_PPC_ADDR32 in the eabi
3934 && htab
->got
== NULL
3935 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3937 if (htab
->elf
.dynobj
== NULL
)
3938 htab
->elf
.dynobj
= abfd
;
3939 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3941 BFD_ASSERT (h
== htab
->elf
.hgot
);
3945 r_type
= ELF32_R_TYPE (rel
->r_info
);
3946 if (h
== NULL
&& !htab
->is_vxworks
)
3948 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3953 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
3955 struct plt_entry
**ifunc
;
3957 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3958 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
3963 /* STT_GNU_IFUNC symbols must have a PLT entry;
3964 In a non-pie executable even when there are
3967 || is_branch_reloc (r_type
))
3970 if (r_type
== R_PPC_PLTREL24
)
3972 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
3974 addend
= rel
->r_addend
;
3976 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
3982 if (!htab
->is_vxworks
3983 && is_branch_reloc (r_type
)
3988 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
3989 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
3990 /* We have a new-style __tls_get_addr call with a marker
3994 /* Mark this section as having an old-style call. */
3995 sec
->has_tls_get_addr_call
= 1;
4002 /* These special tls relocs tie a call to __tls_get_addr with
4003 its parameter symbol. */
4006 case R_PPC_GOT_TLSLD16
:
4007 case R_PPC_GOT_TLSLD16_LO
:
4008 case R_PPC_GOT_TLSLD16_HI
:
4009 case R_PPC_GOT_TLSLD16_HA
:
4010 tls_type
= TLS_TLS
| TLS_LD
;
4013 case R_PPC_GOT_TLSGD16
:
4014 case R_PPC_GOT_TLSGD16_LO
:
4015 case R_PPC_GOT_TLSGD16_HI
:
4016 case R_PPC_GOT_TLSGD16_HA
:
4017 tls_type
= TLS_TLS
| TLS_GD
;
4020 case R_PPC_GOT_TPREL16
:
4021 case R_PPC_GOT_TPREL16_LO
:
4022 case R_PPC_GOT_TPREL16_HI
:
4023 case R_PPC_GOT_TPREL16_HA
:
4024 if (!info
->executable
)
4025 info
->flags
|= DF_STATIC_TLS
;
4026 tls_type
= TLS_TLS
| TLS_TPREL
;
4029 case R_PPC_GOT_DTPREL16
:
4030 case R_PPC_GOT_DTPREL16_LO
:
4031 case R_PPC_GOT_DTPREL16_HI
:
4032 case R_PPC_GOT_DTPREL16_HA
:
4033 tls_type
= TLS_TLS
| TLS_DTPREL
;
4035 sec
->has_tls_reloc
= 1;
4038 /* GOT16 relocations */
4040 case R_PPC_GOT16_LO
:
4041 case R_PPC_GOT16_HI
:
4042 case R_PPC_GOT16_HA
:
4043 /* This symbol requires a global offset table entry. */
4044 if (htab
->got
== NULL
)
4046 if (htab
->elf
.dynobj
== NULL
)
4047 htab
->elf
.dynobj
= abfd
;
4048 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4053 h
->got
.refcount
+= 1;
4054 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4057 /* This is a global offset table entry for a local symbol. */
4058 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4061 /* We may also need a plt entry if the symbol turns out to be
4063 if (h
!= NULL
&& !info
->shared
)
4065 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4070 /* Indirect .sdata relocation. */
4071 case R_PPC_EMB_SDAI16
:
4074 bad_shared_reloc (abfd
, r_type
);
4077 if (htab
->sdata
[0].section
== NULL
4078 && !ppc_elf_create_linker_section (abfd
, info
, 0,
4081 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[0],
4086 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4087 h
->non_got_ref
= TRUE
;
4091 /* Indirect .sdata2 relocation. */
4092 case R_PPC_EMB_SDA2I16
:
4095 bad_shared_reloc (abfd
, r_type
);
4098 if (htab
->sdata
[1].section
== NULL
4099 && !ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
4102 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[1],
4107 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4108 h
->non_got_ref
= TRUE
;
4112 case R_PPC_VLE_SDAREL_LO16A
:
4113 case R_PPC_VLE_SDAREL_LO16D
:
4114 case R_PPC_VLE_SDAREL_HI16A
:
4115 case R_PPC_VLE_SDAREL_HI16D
:
4116 case R_PPC_VLE_SDAREL_HA16A
:
4117 case R_PPC_VLE_SDAREL_HA16D
:
4118 case R_PPC_SDAREL16
:
4119 if (htab
->sdata
[0].sym
== NULL
4120 && !create_sdata_sym (info
, &htab
->sdata
[0]))
4123 if (htab
->sdata
[1].sym
== NULL
4124 && !create_sdata_sym (info
, &htab
->sdata
[1]))
4129 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4130 h
->non_got_ref
= TRUE
;
4134 case R_PPC_VLE_REL8
:
4135 case R_PPC_VLE_REL15
:
4136 case R_PPC_VLE_REL24
:
4137 case R_PPC_VLE_LO16A
:
4138 case R_PPC_VLE_LO16D
:
4139 case R_PPC_VLE_HI16A
:
4140 case R_PPC_VLE_HI16D
:
4141 case R_PPC_VLE_HA16A
:
4142 case R_PPC_VLE_HA16D
:
4145 case R_PPC_EMB_SDA2REL
:
4148 bad_shared_reloc (abfd
, r_type
);
4151 if (htab
->sdata
[1].sym
== NULL
4152 && !create_sdata_sym (info
, &htab
->sdata
[1]))
4156 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4157 h
->non_got_ref
= TRUE
;
4161 case R_PPC_VLE_SDA21_LO
:
4162 case R_PPC_VLE_SDA21
:
4163 case R_PPC_EMB_SDA21
:
4164 case R_PPC_EMB_RELSDA
:
4167 bad_shared_reloc (abfd
, r_type
);
4170 if (htab
->sdata
[0].sym
== NULL
4171 && !create_sdata_sym (info
, &htab
->sdata
[0]))
4173 if (htab
->sdata
[1].sym
== NULL
4174 && !create_sdata_sym (info
, &htab
->sdata
[1]))
4178 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4179 h
->non_got_ref
= TRUE
;
4183 case R_PPC_EMB_NADDR32
:
4184 case R_PPC_EMB_NADDR16
:
4185 case R_PPC_EMB_NADDR16_LO
:
4186 case R_PPC_EMB_NADDR16_HI
:
4187 case R_PPC_EMB_NADDR16_HA
:
4190 bad_shared_reloc (abfd
, r_type
);
4194 h
->non_got_ref
= TRUE
;
4197 case R_PPC_PLTREL24
:
4202 case R_PPC_PLTREL32
:
4203 case R_PPC_PLT16_LO
:
4204 case R_PPC_PLT16_HI
:
4205 case R_PPC_PLT16_HA
:
4207 fprintf (stderr
, "Reloc requires a PLT entry\n");
4209 /* This symbol requires a procedure linkage table entry. We
4210 actually build the entry in finish_dynamic_symbol,
4211 because this might be a case of linking PIC code without
4212 linking in any dynamic objects, in which case we don't
4213 need to generate a procedure linkage table after all. */
4217 /* It does not make sense to have a procedure linkage
4218 table entry for a local symbol. */
4219 info
->callbacks
->einfo (_("%P: %H: %s reloc against local symbol\n"),
4220 abfd
, sec
, rel
->r_offset
,
4221 ppc_elf_howto_table
[r_type
]->name
);
4222 bfd_set_error (bfd_error_bad_value
);
4229 if (r_type
== R_PPC_PLTREL24
)
4231 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4233 addend
= rel
->r_addend
;
4236 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4241 /* The following relocations don't need to propagate the
4242 relocation if linking a shared object since they are
4243 section relative. */
4245 case R_PPC_SECTOFF_LO
:
4246 case R_PPC_SECTOFF_HI
:
4247 case R_PPC_SECTOFF_HA
:
4248 case R_PPC_DTPREL16
:
4249 case R_PPC_DTPREL16_LO
:
4250 case R_PPC_DTPREL16_HI
:
4251 case R_PPC_DTPREL16_HA
:
4256 case R_PPC_REL16_LO
:
4257 case R_PPC_REL16_HI
:
4258 case R_PPC_REL16_HA
:
4259 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4262 /* These are just markers. */
4264 case R_PPC_EMB_MRKREF
:
4268 case R_PPC_RELAX_PLT
:
4269 case R_PPC_RELAX_PLTREL24
:
4272 /* These should only appear in dynamic objects. */
4274 case R_PPC_GLOB_DAT
:
4275 case R_PPC_JMP_SLOT
:
4276 case R_PPC_RELATIVE
:
4277 case R_PPC_IRELATIVE
:
4280 /* These aren't handled yet. We'll report an error later. */
4282 case R_PPC_EMB_RELSEC16
:
4283 case R_PPC_EMB_RELST_LO
:
4284 case R_PPC_EMB_RELST_HI
:
4285 case R_PPC_EMB_RELST_HA
:
4286 case R_PPC_EMB_BIT_FLD
:
4289 /* This refers only to functions defined in the shared library. */
4290 case R_PPC_LOCAL24PC
:
4291 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4293 htab
->plt_type
= PLT_OLD
;
4294 htab
->old_bfd
= abfd
;
4296 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4300 info
->callbacks
->einfo (_("%P: %H: @local call to ifunc %s\n"),
4301 abfd
, sec
, rel
->r_offset
,
4302 h
->root
.root
.string
);
4303 bfd_set_error (bfd_error_bad_value
);
4307 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4312 /* This relocation describes the C++ object vtable hierarchy.
4313 Reconstruct it for later use during GC. */
4314 case R_PPC_GNU_VTINHERIT
:
4315 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4319 /* This relocation describes which C++ vtable entries are actually
4320 used. Record for later use during GC. */
4321 case R_PPC_GNU_VTENTRY
:
4322 BFD_ASSERT (h
!= NULL
);
4324 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4328 /* We shouldn't really be seeing these. */
4331 case R_PPC_TPREL16_LO
:
4332 case R_PPC_TPREL16_HI
:
4333 case R_PPC_TPREL16_HA
:
4334 if (!info
->executable
)
4335 info
->flags
|= DF_STATIC_TLS
;
4339 case R_PPC_DTPMOD32
:
4340 case R_PPC_DTPREL32
:
4346 && (sec
->flags
& SEC_CODE
) != 0
4348 && htab
->plt_type
== PLT_UNSET
)
4350 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4351 the start of a function, which assembles to a REL32
4352 reference to .got2. If we detect one of these, then
4353 force the old PLT layout because the linker cannot
4354 reliably deduce the GOT pointer value needed for
4357 Elf_Internal_Sym
*isym
;
4359 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4364 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4367 htab
->plt_type
= PLT_OLD
;
4368 htab
->old_bfd
= abfd
;
4371 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4377 case R_PPC_ADDR16_LO
:
4378 case R_PPC_ADDR16_HI
:
4379 case R_PPC_ADDR16_HA
:
4382 if (h
!= NULL
&& !info
->shared
)
4384 /* We may need a plt entry if the symbol turns out to be
4385 a function defined in a dynamic object. */
4386 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4389 /* We may need a copy reloc too. */
4391 h
->pointer_equality_needed
= 1;
4397 case R_PPC_REL14_BRTAKEN
:
4398 case R_PPC_REL14_BRNTAKEN
:
4401 if (h
== htab
->elf
.hgot
)
4403 if (htab
->plt_type
== PLT_UNSET
)
4405 htab
->plt_type
= PLT_OLD
;
4406 htab
->old_bfd
= abfd
;
4414 case R_PPC_ADDR14_BRTAKEN
:
4415 case R_PPC_ADDR14_BRNTAKEN
:
4416 if (h
!= NULL
&& !info
->shared
)
4418 /* We may need a plt entry if the symbol turns out to be
4419 a function defined in a dynamic object. */
4421 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4427 /* If we are creating a shared library, and this is a reloc
4428 against a global symbol, or a non PC relative reloc
4429 against a local symbol, then we need to copy the reloc
4430 into the shared library. However, if we are linking with
4431 -Bsymbolic, we do not need to copy a reloc against a
4432 global symbol which is defined in an object we are
4433 including in the link (i.e., DEF_REGULAR is set). At
4434 this point we have not seen all the input files, so it is
4435 possible that DEF_REGULAR is not set now but will be set
4436 later (it is never cleared). In case of a weak definition,
4437 DEF_REGULAR may be cleared later by a strong definition in
4438 a shared library. We account for that possibility below by
4439 storing information in the dyn_relocs field of the hash
4440 table entry. A similar situation occurs when creating
4441 shared libraries and symbol visibility changes render the
4444 If on the other hand, we are creating an executable, we
4445 may need to keep relocations for symbols satisfied by a
4446 dynamic library if we manage to avoid copy relocs for the
4449 && (must_be_dyn_reloc (info
, r_type
)
4451 && (!SYMBOLIC_BIND (info
, h
)
4452 || h
->root
.type
== bfd_link_hash_defweak
4453 || !h
->def_regular
))))
4454 || (ELIMINATE_COPY_RELOCS
4457 && (h
->root
.type
== bfd_link_hash_defweak
4458 || !h
->def_regular
)))
4462 "ppc_elf_check_relocs needs to "
4463 "create relocation for %s\n",
4464 (h
&& h
->root
.root
.string
4465 ? h
->root
.root
.string
: "<unknown>"));
4469 if (htab
->elf
.dynobj
== NULL
)
4470 htab
->elf
.dynobj
= abfd
;
4472 sreloc
= _bfd_elf_make_dynamic_reloc_section
4473 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4479 /* If this is a global symbol, we count the number of
4480 relocations we need for this symbol. */
4483 struct elf_dyn_relocs
*p
;
4484 struct elf_dyn_relocs
**rel_head
;
4486 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4488 if (p
== NULL
|| p
->sec
!= sec
)
4490 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4493 p
->next
= *rel_head
;
4500 if (!must_be_dyn_reloc (info
, r_type
))
4505 /* Track dynamic relocs needed for local syms too.
4506 We really need local syms available to do this
4508 struct ppc_dyn_relocs
*p
;
4509 struct ppc_dyn_relocs
**rel_head
;
4510 bfd_boolean is_ifunc
;
4513 Elf_Internal_Sym
*isym
;
4515 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4520 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4524 vpp
= &elf_section_data (s
)->local_dynrel
;
4525 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4526 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4528 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4530 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4532 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4535 p
->next
= *rel_head
;
4538 p
->ifunc
= is_ifunc
;
4553 /* Merge object attributes from IBFD into OBFD. Raise an error if
4554 there are conflicting attributes. */
4556 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
4558 obj_attribute
*in_attr
, *in_attrs
;
4559 obj_attribute
*out_attr
, *out_attrs
;
4561 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
4563 /* This is the first object. Copy the attributes. */
4564 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
4566 /* Use the Tag_null value to indicate the attributes have been
4568 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
4573 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4574 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4576 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4577 non-conflicting ones. */
4578 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4579 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4580 if (in_attr
->i
!= out_attr
->i
)
4583 if (out_attr
->i
== 0)
4584 out_attr
->i
= in_attr
->i
;
4585 else if (in_attr
->i
== 0)
4587 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4589 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
4590 else if (out_attr
->i
== 1 && in_attr
->i
== 3)
4592 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4594 else if (out_attr
->i
== 3 && in_attr
->i
== 1)
4596 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4598 else if (out_attr
->i
== 3 && in_attr
->i
== 2)
4600 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4602 else if (out_attr
->i
== 2 && (in_attr
->i
== 1 || in_attr
->i
== 3))
4604 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
4605 else if (in_attr
->i
> 3)
4607 (_("Warning: %B uses unknown floating point ABI %d"), ibfd
,
4611 (_("Warning: %B uses unknown floating point ABI %d"), obfd
,
4615 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4616 merge non-conflicting ones. */
4617 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4618 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4619 if (in_attr
->i
!= out_attr
->i
)
4621 const char *in_abi
= NULL
, *out_abi
= NULL
;
4625 case 1: in_abi
= "generic"; break;
4626 case 2: in_abi
= "AltiVec"; break;
4627 case 3: in_abi
= "SPE"; break;
4630 switch (out_attr
->i
)
4632 case 1: out_abi
= "generic"; break;
4633 case 2: out_abi
= "AltiVec"; break;
4634 case 3: out_abi
= "SPE"; break;
4638 if (out_attr
->i
== 0)
4639 out_attr
->i
= in_attr
->i
;
4640 else if (in_attr
->i
== 0)
4642 /* For now, allow generic to transition to AltiVec or SPE
4643 without a warning. If GCC marked files with their stack
4644 alignment and used don't-care markings for files which are
4645 not affected by the vector ABI, we could warn about this
4647 else if (out_attr
->i
== 1)
4648 out_attr
->i
= in_attr
->i
;
4649 else if (in_attr
->i
== 1)
4651 else if (in_abi
== NULL
)
4653 (_("Warning: %B uses unknown vector ABI %d"), ibfd
,
4655 else if (out_abi
== NULL
)
4657 (_("Warning: %B uses unknown vector ABI %d"), obfd
,
4661 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4662 ibfd
, obfd
, in_abi
, out_abi
);
4665 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4666 and merge non-conflicting ones. */
4667 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4668 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4669 if (in_attr
->i
!= out_attr
->i
)
4672 if (out_attr
->i
== 0)
4673 out_attr
->i
= in_attr
->i
;
4674 else if (in_attr
->i
== 0)
4676 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4678 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd
, ibfd
);
4679 else if (out_attr
->i
== 2 && in_attr
->i
== 1)
4681 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd
, obfd
);
4682 else if (in_attr
->i
> 2)
4684 (_("Warning: %B uses unknown small structure return convention %d"), ibfd
,
4688 (_("Warning: %B uses unknown small structure return convention %d"), obfd
,
4692 /* Merge Tag_compatibility attributes and any common GNU ones. */
4693 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
4698 /* Merge backend specific data from an object file to the output
4699 object file when linking. */
4702 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4708 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4711 /* Check if we have the same endianness. */
4712 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
4715 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
4718 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4719 old_flags
= elf_elfheader (obfd
)->e_flags
;
4720 if (!elf_flags_init (obfd
))
4722 /* First call, no flags set. */
4723 elf_flags_init (obfd
) = TRUE
;
4724 elf_elfheader (obfd
)->e_flags
= new_flags
;
4727 /* Compatible flags are ok. */
4728 else if (new_flags
== old_flags
)
4731 /* Incompatible flags. */
4734 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4735 to be linked with either. */
4737 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4738 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4741 (*_bfd_error_handler
)
4742 (_("%B: compiled with -mrelocatable and linked with "
4743 "modules compiled normally"), ibfd
);
4745 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4746 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4749 (*_bfd_error_handler
)
4750 (_("%B: compiled normally and linked with "
4751 "modules compiled with -mrelocatable"), ibfd
);
4754 /* The output is -mrelocatable-lib iff both the input files are. */
4755 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4756 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4758 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4759 but each input file is either -mrelocatable or -mrelocatable-lib. */
4760 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4761 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4762 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4763 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4765 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4766 any module uses it. */
4767 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4769 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4770 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4772 /* Warn about any other mismatches. */
4773 if (new_flags
!= old_flags
)
4776 (*_bfd_error_handler
)
4777 (_("%B: uses different e_flags (0x%lx) fields "
4778 "than previous modules (0x%lx)"),
4779 ibfd
, (long) new_flags
, (long) old_flags
);
4784 bfd_set_error (bfd_error_bad_value
);
4793 ppc_elf_vle_split16 (bfd
*output_bfd
, bfd_byte
*loc
,
4795 split16_format_type split16_format
)
4798 unsigned int insn
, top5
;
4800 insn
= bfd_get_32 (output_bfd
, loc
);
4801 top5
= value
& 0xf800;
4802 top5
= top5
<< (split16_format
== split16a_type
? 9 : 5);
4804 insn
|= value
& 0x7ff;
4805 bfd_put_32 (output_bfd
, insn
, loc
);
4809 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4810 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4812 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4813 struct bfd_link_info
*info
)
4815 struct ppc_elf_link_hash_table
*htab
;
4818 htab
= ppc_elf_hash_table (info
);
4820 if (htab
->plt_type
== PLT_UNSET
)
4822 struct elf_link_hash_entry
*h
;
4824 if (htab
->params
->plt_style
== PLT_OLD
)
4825 htab
->plt_type
= PLT_OLD
;
4826 else if (info
->shared
4827 && htab
->elf
.dynamic_sections_created
4828 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
4829 FALSE
, FALSE
, TRUE
)) != NULL
4830 && (h
->type
== STT_FUNC
4833 && !(SYMBOL_CALLS_LOCAL (info
, h
)
4834 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4835 && h
->root
.type
== bfd_link_hash_undefweak
)))
4837 /* Profiling of shared libs (and pies) is not supported with
4838 secure plt, because ppc32 does profiling before a
4839 function prologue and a secure plt pic call stubs needs
4840 r30 to be set up. */
4841 htab
->plt_type
= PLT_OLD
;
4846 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
4848 /* Look through the reloc flags left by ppc_elf_check_relocs.
4849 Use the old style bss plt if a file makes plt calls
4850 without using the new relocs, and if ld isn't given
4851 --secure-plt and we never see REL16 relocs. */
4852 if (plt_type
== PLT_UNSET
)
4854 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
4855 if (is_ppc_elf (ibfd
))
4857 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4859 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
4862 htab
->old_bfd
= ibfd
;
4866 htab
->plt_type
= plt_type
;
4869 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
4871 if (htab
->old_bfd
!= NULL
)
4872 info
->callbacks
->einfo (_("%P: bss-plt forced due to %B\n"),
4875 info
->callbacks
->einfo (_("%P: bss-plt forced by profiling\n"));
4878 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
4880 if (htab
->plt_type
== PLT_NEW
)
4882 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
4883 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4885 /* The new PLT is a loaded section. */
4886 if (htab
->plt
!= NULL
4887 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
4890 /* The new GOT is not executable. */
4891 if (htab
->got
!= NULL
4892 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
4897 /* Stop an unused .glink section from affecting .text alignment. */
4898 if (htab
->glink
!= NULL
4899 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
4902 return htab
->plt_type
== PLT_NEW
;
4905 /* Return the section that should be marked against GC for a given
4909 ppc_elf_gc_mark_hook (asection
*sec
,
4910 struct bfd_link_info
*info
,
4911 Elf_Internal_Rela
*rel
,
4912 struct elf_link_hash_entry
*h
,
4913 Elf_Internal_Sym
*sym
)
4916 switch (ELF32_R_TYPE (rel
->r_info
))
4918 case R_PPC_GNU_VTINHERIT
:
4919 case R_PPC_GNU_VTENTRY
:
4923 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
4926 /* Update the got, plt and dynamic reloc reference counts for the
4927 section being removed. */
4930 ppc_elf_gc_sweep_hook (bfd
*abfd
,
4931 struct bfd_link_info
*info
,
4933 const Elf_Internal_Rela
*relocs
)
4935 struct ppc_elf_link_hash_table
*htab
;
4936 Elf_Internal_Shdr
*symtab_hdr
;
4937 struct elf_link_hash_entry
**sym_hashes
;
4938 bfd_signed_vma
*local_got_refcounts
;
4939 const Elf_Internal_Rela
*rel
, *relend
;
4942 if (info
->relocatable
)
4945 if ((sec
->flags
& SEC_ALLOC
) == 0)
4948 elf_section_data (sec
)->local_dynrel
= NULL
;
4950 htab
= ppc_elf_hash_table (info
);
4951 symtab_hdr
= &elf_symtab_hdr (abfd
);
4952 sym_hashes
= elf_sym_hashes (abfd
);
4953 local_got_refcounts
= elf_local_got_refcounts (abfd
);
4954 got2
= bfd_get_section_by_name (abfd
, ".got2");
4956 relend
= relocs
+ sec
->reloc_count
;
4957 for (rel
= relocs
; rel
< relend
; rel
++)
4959 unsigned long r_symndx
;
4960 enum elf_ppc_reloc_type r_type
;
4961 struct elf_link_hash_entry
*h
= NULL
;
4963 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4964 if (r_symndx
>= symtab_hdr
->sh_info
)
4966 struct elf_dyn_relocs
**pp
, *p
;
4967 struct ppc_elf_link_hash_entry
*eh
;
4969 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4970 while (h
->root
.type
== bfd_link_hash_indirect
4971 || h
->root
.type
== bfd_link_hash_warning
)
4972 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4973 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4975 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4978 /* Everything must go for SEC. */
4984 r_type
= ELF32_R_TYPE (rel
->r_info
);
4985 if (!htab
->is_vxworks
4987 && local_got_refcounts
!= NULL
4989 || is_branch_reloc (r_type
)))
4991 struct plt_entry
**local_plt
= (struct plt_entry
**)
4992 (local_got_refcounts
+ symtab_hdr
->sh_info
);
4993 char *local_got_tls_masks
= (char *)
4994 (local_plt
+ symtab_hdr
->sh_info
);
4995 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
4997 struct plt_entry
**ifunc
= local_plt
+ r_symndx
;
4999 struct plt_entry
*ent
;
5001 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
5002 addend
= rel
->r_addend
;
5003 ent
= find_plt_ent (ifunc
, got2
, addend
);
5004 if (ent
->plt
.refcount
> 0)
5005 ent
->plt
.refcount
-= 1;
5012 case R_PPC_GOT_TLSLD16
:
5013 case R_PPC_GOT_TLSLD16_LO
:
5014 case R_PPC_GOT_TLSLD16_HI
:
5015 case R_PPC_GOT_TLSLD16_HA
:
5016 case R_PPC_GOT_TLSGD16
:
5017 case R_PPC_GOT_TLSGD16_LO
:
5018 case R_PPC_GOT_TLSGD16_HI
:
5019 case R_PPC_GOT_TLSGD16_HA
:
5020 case R_PPC_GOT_TPREL16
:
5021 case R_PPC_GOT_TPREL16_LO
:
5022 case R_PPC_GOT_TPREL16_HI
:
5023 case R_PPC_GOT_TPREL16_HA
:
5024 case R_PPC_GOT_DTPREL16
:
5025 case R_PPC_GOT_DTPREL16_LO
:
5026 case R_PPC_GOT_DTPREL16_HI
:
5027 case R_PPC_GOT_DTPREL16_HA
:
5029 case R_PPC_GOT16_LO
:
5030 case R_PPC_GOT16_HI
:
5031 case R_PPC_GOT16_HA
:
5034 if (h
->got
.refcount
> 0)
5038 struct plt_entry
*ent
;
5040 ent
= find_plt_ent (&h
->plt
.plist
, NULL
, 0);
5041 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5042 ent
->plt
.refcount
-= 1;
5045 else if (local_got_refcounts
!= NULL
)
5047 if (local_got_refcounts
[r_symndx
] > 0)
5048 local_got_refcounts
[r_symndx
]--;
5054 case R_PPC_REL14_BRTAKEN
:
5055 case R_PPC_REL14_BRNTAKEN
:
5057 if (h
== NULL
|| h
== htab
->elf
.hgot
)
5064 case R_PPC_ADDR16_LO
:
5065 case R_PPC_ADDR16_HI
:
5066 case R_PPC_ADDR16_HA
:
5068 case R_PPC_ADDR14_BRTAKEN
:
5069 case R_PPC_ADDR14_BRNTAKEN
:
5076 case R_PPC_PLTREL24
:
5077 case R_PPC_PLTREL32
:
5078 case R_PPC_PLT16_LO
:
5079 case R_PPC_PLT16_HI
:
5080 case R_PPC_PLT16_HA
:
5084 struct plt_entry
*ent
;
5086 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
5087 addend
= rel
->r_addend
;
5088 ent
= find_plt_ent (&h
->plt
.plist
, got2
, addend
);
5089 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5090 ent
->plt
.refcount
-= 1;
5101 /* Set plt output section type, htab->tls_get_addr, and call the
5102 generic ELF tls_setup function. */
5105 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5107 struct ppc_elf_link_hash_table
*htab
;
5109 htab
= ppc_elf_hash_table (info
);
5110 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5111 FALSE
, FALSE
, TRUE
);
5112 if (!htab
->params
->no_tls_get_addr_opt
)
5114 struct elf_link_hash_entry
*opt
, *tga
;
5115 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5116 FALSE
, FALSE
, TRUE
);
5118 && (opt
->root
.type
== bfd_link_hash_defined
5119 || opt
->root
.type
== bfd_link_hash_defweak
))
5121 /* If glibc supports an optimized __tls_get_addr call stub,
5122 signalled by the presence of __tls_get_addr_opt, and we'll
5123 be calling __tls_get_addr via a plt call stub, then
5124 make __tls_get_addr point to __tls_get_addr_opt. */
5125 tga
= htab
->tls_get_addr
;
5126 if (htab
->elf
.dynamic_sections_created
5128 && (tga
->type
== STT_FUNC
5130 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5131 || (ELF_ST_VISIBILITY (tga
->other
) != STV_DEFAULT
5132 && tga
->root
.type
== bfd_link_hash_undefweak
)))
5134 struct plt_entry
*ent
;
5135 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5136 if (ent
->plt
.refcount
> 0)
5140 tga
->root
.type
= bfd_link_hash_indirect
;
5141 tga
->root
.u
.i
.link
= &opt
->root
;
5142 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5143 if (opt
->dynindx
!= -1)
5145 /* Use __tls_get_addr_opt in dynamic relocations. */
5147 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5149 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5152 htab
->tls_get_addr
= opt
;
5157 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5159 if (htab
->plt_type
== PLT_NEW
5160 && htab
->plt
!= NULL
5161 && htab
->plt
->output_section
!= NULL
)
5163 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
5164 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5167 return _bfd_elf_tls_setup (obfd
, info
);
5170 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5174 branch_reloc_hash_match (const bfd
*ibfd
,
5175 const Elf_Internal_Rela
*rel
,
5176 const struct elf_link_hash_entry
*hash
)
5178 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5179 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5180 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5182 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5184 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5185 struct elf_link_hash_entry
*h
;
5187 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5188 while (h
->root
.type
== bfd_link_hash_indirect
5189 || h
->root
.type
== bfd_link_hash_warning
)
5190 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5197 /* Run through all the TLS relocs looking for optimization
5201 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5202 struct bfd_link_info
*info
)
5206 struct ppc_elf_link_hash_table
*htab
;
5209 if (info
->relocatable
|| !info
->executable
)
5212 htab
= ppc_elf_hash_table (info
);
5216 /* Make two passes through the relocs. First time check that tls
5217 relocs involved in setting up a tls_get_addr call are indeed
5218 followed by such a call. If they are not, don't do any tls
5219 optimization. On the second pass twiddle tls_mask flags to
5220 notify relocate_section that optimization can be done, and
5221 adjust got and plt refcounts. */
5222 for (pass
= 0; pass
< 2; ++pass
)
5223 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5225 Elf_Internal_Sym
*locsyms
= NULL
;
5226 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5227 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5229 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5230 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5232 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5233 int expecting_tls_get_addr
= 0;
5235 /* Read the relocations. */
5236 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5238 if (relstart
== NULL
)
5241 relend
= relstart
+ sec
->reloc_count
;
5242 for (rel
= relstart
; rel
< relend
; rel
++)
5244 enum elf_ppc_reloc_type r_type
;
5245 unsigned long r_symndx
;
5246 struct elf_link_hash_entry
*h
= NULL
;
5248 char tls_set
, tls_clear
;
5249 bfd_boolean is_local
;
5250 bfd_signed_vma
*got_count
;
5252 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5253 if (r_symndx
>= symtab_hdr
->sh_info
)
5255 struct elf_link_hash_entry
**sym_hashes
;
5257 sym_hashes
= elf_sym_hashes (ibfd
);
5258 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5259 while (h
->root
.type
== bfd_link_hash_indirect
5260 || h
->root
.type
== bfd_link_hash_warning
)
5261 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5269 r_type
= ELF32_R_TYPE (rel
->r_info
);
5270 /* If this section has old-style __tls_get_addr calls
5271 without marker relocs, then check that each
5272 __tls_get_addr call reloc is preceded by a reloc
5273 that conceivably belongs to the __tls_get_addr arg
5274 setup insn. If we don't find matching arg setup
5275 relocs, don't do any tls optimization. */
5277 && sec
->has_tls_get_addr_call
5279 && h
== htab
->tls_get_addr
5280 && !expecting_tls_get_addr
5281 && is_branch_reloc (r_type
))
5283 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5284 "TLS optimization disabled\n",
5285 ibfd
, sec
, rel
->r_offset
);
5286 if (elf_section_data (sec
)->relocs
!= relstart
)
5291 expecting_tls_get_addr
= 0;
5294 case R_PPC_GOT_TLSLD16
:
5295 case R_PPC_GOT_TLSLD16_LO
:
5296 expecting_tls_get_addr
= 1;
5299 case R_PPC_GOT_TLSLD16_HI
:
5300 case R_PPC_GOT_TLSLD16_HA
:
5301 /* These relocs should never be against a symbol
5302 defined in a shared lib. Leave them alone if
5303 that turns out to be the case. */
5312 case R_PPC_GOT_TLSGD16
:
5313 case R_PPC_GOT_TLSGD16_LO
:
5314 expecting_tls_get_addr
= 1;
5317 case R_PPC_GOT_TLSGD16_HI
:
5318 case R_PPC_GOT_TLSGD16_HA
:
5324 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5328 case R_PPC_GOT_TPREL16
:
5329 case R_PPC_GOT_TPREL16_LO
:
5330 case R_PPC_GOT_TPREL16_HI
:
5331 case R_PPC_GOT_TPREL16_HA
:
5336 tls_clear
= TLS_TPREL
;
5344 expecting_tls_get_addr
= 2;
5355 if (!expecting_tls_get_addr
5356 || (expecting_tls_get_addr
== 1
5357 && !sec
->has_tls_get_addr_call
))
5360 if (rel
+ 1 < relend
5361 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5362 htab
->tls_get_addr
))
5365 /* Uh oh, we didn't find the expected call. We
5366 could just mark this symbol to exclude it
5367 from tls optimization but it's safer to skip
5368 the entire optimization. */
5369 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5370 "TLS optimization disabled\n"),
5371 ibfd
, sec
, rel
->r_offset
);
5372 if (elf_section_data (sec
)->relocs
!= relstart
)
5377 if (expecting_tls_get_addr
)
5379 struct plt_entry
*ent
;
5383 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5384 addend
= rel
[1].r_addend
;
5385 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5387 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5388 ent
->plt
.refcount
-= 1;
5390 if (expecting_tls_get_addr
== 2)
5396 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5397 got_count
= &h
->got
.refcount
;
5401 bfd_signed_vma
*lgot_refs
;
5402 struct plt_entry
**local_plt
;
5405 if (locsyms
== NULL
)
5407 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5408 if (locsyms
== NULL
)
5409 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5410 symtab_hdr
->sh_info
,
5411 0, NULL
, NULL
, NULL
);
5412 if (locsyms
== NULL
)
5414 if (elf_section_data (sec
)->relocs
!= relstart
)
5419 lgot_refs
= elf_local_got_refcounts (ibfd
);
5420 if (lgot_refs
== NULL
)
5422 local_plt
= (struct plt_entry
**)
5423 (lgot_refs
+ symtab_hdr
->sh_info
);
5424 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
5425 tls_mask
= &lgot_masks
[r_symndx
];
5426 got_count
= &lgot_refs
[r_symndx
];
5431 /* We managed to get rid of a got entry. */
5436 *tls_mask
|= tls_set
;
5437 *tls_mask
&= ~tls_clear
;
5440 if (elf_section_data (sec
)->relocs
!= relstart
)
5445 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
5447 if (!info
->keep_memory
)
5450 symtab_hdr
->contents
= (unsigned char *) locsyms
;
5456 /* Return true if we have dynamic relocs that apply to read-only sections. */
5459 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5461 struct elf_dyn_relocs
*p
;
5463 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5465 asection
*s
= p
->sec
->output_section
;
5468 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
5469 == (SEC_READONLY
| SEC_ALLOC
)))
5475 /* Adjust a symbol defined by a dynamic object and referenced by a
5476 regular object. The current definition is in some section of the
5477 dynamic object, but we're not including those sections. We have to
5478 change the definition to something the rest of the link can
5482 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5483 struct elf_link_hash_entry
*h
)
5485 struct ppc_elf_link_hash_table
*htab
;
5489 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5490 h
->root
.root
.string
);
5493 /* Make sure we know what is going on here. */
5494 htab
= ppc_elf_hash_table (info
);
5495 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5497 || h
->type
== STT_GNU_IFUNC
5498 || h
->u
.weakdef
!= NULL
5501 && !h
->def_regular
)));
5503 /* Deal with function syms. */
5504 if (h
->type
== STT_FUNC
5505 || h
->type
== STT_GNU_IFUNC
5508 /* Clear procedure linkage table information for any symbol that
5509 won't need a .plt entry. */
5510 struct plt_entry
*ent
;
5511 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5512 if (ent
->plt
.refcount
> 0)
5515 || (h
->type
!= STT_GNU_IFUNC
5516 && (SYMBOL_CALLS_LOCAL (info
, h
)
5517 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5518 && h
->root
.type
== bfd_link_hash_undefweak
))))
5520 /* A PLT entry is not required/allowed when:
5522 1. We are not using ld.so; because then the PLT entry
5523 can't be set up, so we can't use one. In this case,
5524 ppc_elf_adjust_dynamic_symbol won't even be called.
5526 2. GC has rendered the entry unused.
5528 3. We know for certain that a call to this symbol
5529 will go to this object, or will remain undefined. */
5530 h
->plt
.plist
= NULL
;
5535 /* After adjust_dynamic_symbol, non_got_ref set in the
5536 non-shared case means that we have allocated space in
5537 .dynbss for the symbol and thus dyn_relocs for this
5538 symbol should be discarded.
5539 If we get here we know we are making a PLT entry for this
5540 symbol, and in an executable we'd normally resolve
5541 relocations against this symbol to the PLT entry. Allow
5542 dynamic relocs if the reference is weak, and the dynamic
5543 relocs will not cause text relocation. */
5544 if (!h
->ref_regular_nonweak
5546 && h
->type
!= STT_GNU_IFUNC
5547 && !htab
->is_vxworks
5548 && !ppc_elf_hash_entry (h
)->has_sda_refs
5549 && !readonly_dynrelocs (h
))
5555 h
->plt
.plist
= NULL
;
5557 /* If this is a weak symbol, and there is a real definition, the
5558 processor independent code will have arranged for us to see the
5559 real definition first, and we can just use the same value. */
5560 if (h
->u
.weakdef
!= NULL
)
5562 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5563 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5564 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5565 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5566 if (ELIMINATE_COPY_RELOCS
)
5567 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5571 /* This is a reference to a symbol defined by a dynamic object which
5572 is not a function. */
5574 /* If we are creating a shared library, we must presume that the
5575 only references to the symbol are via the global offset table.
5576 For such cases we need not do anything here; the relocations will
5577 be handled correctly by relocate_section. */
5581 /* If there are no references to this symbol that do not use the
5582 GOT, we don't need to generate a copy reloc. */
5583 if (!h
->non_got_ref
)
5586 /* If we didn't find any dynamic relocs in read-only sections, then
5587 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5588 We can't do this if there are any small data relocations. This
5589 doesn't work on VxWorks, where we can not have dynamic
5590 relocations (other than copy and jump slot relocations) in an
5592 if (ELIMINATE_COPY_RELOCS
5593 && !ppc_elf_hash_entry (h
)->has_sda_refs
5594 && !htab
->is_vxworks
5596 && !readonly_dynrelocs (h
))
5602 /* We must allocate the symbol in our .dynbss section, which will
5603 become part of the .bss section of the executable. There will be
5604 an entry for this symbol in the .dynsym section. The dynamic
5605 object will contain position independent code, so all references
5606 from the dynamic object to this symbol will go through the global
5607 offset table. The dynamic linker will use the .dynsym entry to
5608 determine the address it must put in the global offset table, so
5609 both the dynamic object and the regular object will refer to the
5610 same memory location for the variable.
5612 Of course, if the symbol is referenced using SDAREL relocs, we
5613 must instead allocate it in .sbss. */
5615 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5619 BFD_ASSERT (s
!= NULL
);
5621 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5622 copy the initial value out of the dynamic object and into the
5623 runtime process image. We need to remember the offset into the
5624 .rela.bss section we are going to use. */
5625 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5629 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5630 srel
= htab
->relsbss
;
5632 srel
= htab
->relbss
;
5633 BFD_ASSERT (srel
!= NULL
);
5634 srel
->size
+= sizeof (Elf32_External_Rela
);
5638 return _bfd_elf_adjust_dynamic_copy (h
, s
);
5641 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5642 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5643 specifying the addend on the plt relocation. For -fpic code, the sym
5644 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5645 xxxxxxxx.got2.plt_pic32.<callee>. */
5648 add_stub_sym (struct plt_entry
*ent
,
5649 struct elf_link_hash_entry
*h
,
5650 struct bfd_link_info
*info
)
5652 struct elf_link_hash_entry
*sh
;
5653 size_t len1
, len2
, len3
;
5656 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5659 stub
= ".plt_pic32.";
5661 stub
= ".plt_call32.";
5663 len1
= strlen (h
->root
.root
.string
);
5664 len2
= strlen (stub
);
5667 len3
= strlen (ent
->sec
->name
);
5668 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5671 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5673 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5674 memcpy (name
+ 8 + len3
, stub
, len2
);
5675 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5676 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5679 if (sh
->root
.type
== bfd_link_hash_new
)
5681 sh
->root
.type
= bfd_link_hash_defined
;
5682 sh
->root
.u
.def
.section
= htab
->glink
;
5683 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5684 sh
->ref_regular
= 1;
5685 sh
->def_regular
= 1;
5686 sh
->ref_regular_nonweak
= 1;
5687 sh
->forced_local
= 1;
5693 /* Allocate NEED contiguous space in .got, and return the offset.
5694 Handles allocation of the got header when crossing 32k. */
5697 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5700 unsigned int max_before_header
;
5702 if (htab
->plt_type
== PLT_VXWORKS
)
5704 where
= htab
->got
->size
;
5705 htab
->got
->size
+= need
;
5709 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5710 if (need
<= htab
->got_gap
)
5712 where
= max_before_header
- htab
->got_gap
;
5713 htab
->got_gap
-= need
;
5717 if (htab
->got
->size
+ need
> max_before_header
5718 && htab
->got
->size
<= max_before_header
)
5720 htab
->got_gap
= max_before_header
- htab
->got
->size
;
5721 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
5723 where
= htab
->got
->size
;
5724 htab
->got
->size
+= need
;
5730 /* Allocate space in associated reloc sections for dynamic relocs. */
5733 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5735 struct bfd_link_info
*info
= inf
;
5736 struct ppc_elf_link_hash_entry
*eh
;
5737 struct ppc_elf_link_hash_table
*htab
;
5738 struct elf_dyn_relocs
*p
;
5740 if (h
->root
.type
== bfd_link_hash_indirect
)
5743 htab
= ppc_elf_hash_table (info
);
5744 if (htab
->elf
.dynamic_sections_created
5745 || h
->type
== STT_GNU_IFUNC
)
5747 struct plt_entry
*ent
;
5748 bfd_boolean doneone
= FALSE
;
5749 bfd_vma plt_offset
= 0, glink_offset
= 0;
5752 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5753 if (ent
->plt
.refcount
> 0)
5755 /* Make sure this symbol is output as a dynamic symbol. */
5756 if (h
->dynindx
== -1
5759 && htab
->elf
.dynamic_sections_created
)
5761 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5765 dyn
= htab
->elf
.dynamic_sections_created
;
5767 || h
->type
== STT_GNU_IFUNC
5768 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
5770 asection
*s
= htab
->plt
;
5771 if (!dyn
|| h
->dynindx
== -1)
5774 if (htab
->plt_type
== PLT_NEW
|| !dyn
|| h
->dynindx
== -1)
5778 plt_offset
= s
->size
;
5781 ent
->plt
.offset
= plt_offset
;
5784 if (!doneone
|| info
->shared
)
5786 glink_offset
= s
->size
;
5787 s
->size
+= GLINK_ENTRY_SIZE
;
5788 if (h
== htab
->tls_get_addr
5789 && !htab
->params
->no_tls_get_addr_opt
)
5790 s
->size
+= TLS_GET_ADDR_GLINK_SIZE
- GLINK_ENTRY_SIZE
;
5797 h
->root
.u
.def
.section
= s
;
5798 h
->root
.u
.def
.value
= glink_offset
;
5800 ent
->glink_offset
= glink_offset
;
5802 if (htab
->params
->emit_stub_syms
5803 && !add_stub_sym (ent
, h
, info
))
5810 /* If this is the first .plt entry, make room
5811 for the special first entry. */
5813 s
->size
+= htab
->plt_initial_entry_size
;
5815 /* The PowerPC PLT is actually composed of two
5816 parts, the first part is 2 words (for a load
5817 and a jump), and then there is a remaining
5818 word available at the end. */
5819 plt_offset
= (htab
->plt_initial_entry_size
5820 + (htab
->plt_slot_size
5822 - htab
->plt_initial_entry_size
)
5823 / htab
->plt_entry_size
)));
5825 /* If this symbol is not defined in a regular
5826 file, and we are not generating a shared
5827 library, then set the symbol to this location
5828 in the .plt. This is to avoid text
5829 relocations, and is required to make
5830 function pointers compare as equal between
5831 the normal executable and the shared library. */
5836 h
->root
.u
.def
.section
= s
;
5837 h
->root
.u
.def
.value
= plt_offset
;
5840 /* Make room for this entry. */
5841 s
->size
+= htab
->plt_entry_size
;
5842 /* After the 8192nd entry, room for two entries
5844 if (htab
->plt_type
== PLT_OLD
5845 && (s
->size
- htab
->plt_initial_entry_size
)
5846 / htab
->plt_entry_size
5847 > PLT_NUM_SINGLE_ENTRIES
)
5848 s
->size
+= htab
->plt_entry_size
;
5850 ent
->plt
.offset
= plt_offset
;
5853 /* We also need to make an entry in the .rela.plt section. */
5856 if (!htab
->elf
.dynamic_sections_created
5857 || h
->dynindx
== -1)
5858 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
5861 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
5863 if (htab
->plt_type
== PLT_VXWORKS
)
5865 /* Allocate space for the unloaded relocations. */
5867 && htab
->elf
.dynamic_sections_created
)
5870 == (bfd_vma
) htab
->plt_initial_entry_size
)
5872 htab
->srelplt2
->size
5873 += (sizeof (Elf32_External_Rela
)
5874 * VXWORKS_PLTRESOLVE_RELOCS
);
5877 htab
->srelplt2
->size
5878 += (sizeof (Elf32_External_Rela
)
5879 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
5882 /* Every PLT entry has an associated GOT entry in
5884 htab
->sgotplt
->size
+= 4;
5891 ent
->plt
.offset
= (bfd_vma
) -1;
5894 ent
->plt
.offset
= (bfd_vma
) -1;
5898 h
->plt
.plist
= NULL
;
5904 h
->plt
.plist
= NULL
;
5908 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5909 if (eh
->elf
.got
.refcount
> 0)
5914 /* Make sure this symbol is output as a dynamic symbol. */
5915 if (eh
->elf
.dynindx
== -1
5916 && !eh
->elf
.forced_local
5917 && eh
->elf
.type
!= STT_GNU_IFUNC
5918 && htab
->elf
.dynamic_sections_created
)
5920 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
5925 if ((eh
->tls_mask
& TLS_TLS
) != 0)
5927 if ((eh
->tls_mask
& TLS_LD
) != 0)
5929 if (!eh
->elf
.def_dynamic
)
5930 /* We'll just use htab->tlsld_got.offset. This should
5931 always be the case. It's a little odd if we have
5932 a local dynamic reloc against a non-local symbol. */
5933 htab
->tlsld_got
.refcount
+= 1;
5937 if ((eh
->tls_mask
& TLS_GD
) != 0)
5939 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5941 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
5947 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5950 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5951 dyn
= htab
->elf
.dynamic_sections_created
;
5953 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
5954 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
5955 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
5957 asection
*rsec
= htab
->relgot
;
5959 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5960 rsec
= htab
->reliplt
;
5961 /* All the entries we allocated need relocs.
5962 Except LD only needs one. */
5963 if ((eh
->tls_mask
& TLS_LD
) != 0
5964 && eh
->elf
.def_dynamic
)
5966 rsec
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
5971 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5973 if (eh
->dyn_relocs
== NULL
5974 || !htab
->elf
.dynamic_sections_created
)
5977 /* In the shared -Bsymbolic case, discard space allocated for
5978 dynamic pc-relative relocs against symbols which turn out to be
5979 defined in regular objects. For the normal shared case, discard
5980 space for relocs that have become local due to symbol visibility
5985 /* Relocs that use pc_count are those that appear on a call insn,
5986 or certain REL relocs (see must_be_dyn_reloc) that can be
5987 generated via assembly. We want calls to protected symbols to
5988 resolve directly to the function rather than going via the plt.
5989 If people want function pointer comparisons to work as expected
5990 then they should avoid writing weird assembly. */
5991 if (SYMBOL_CALLS_LOCAL (info
, h
))
5993 struct elf_dyn_relocs
**pp
;
5995 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5997 p
->count
-= p
->pc_count
;
6006 if (htab
->is_vxworks
)
6008 struct elf_dyn_relocs
**pp
;
6010 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6012 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
6019 /* Discard relocs on undefined symbols that must be local. */
6020 if (eh
->dyn_relocs
!= NULL
6021 && h
->root
.type
== bfd_link_hash_undefined
6022 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
6023 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
6024 eh
->dyn_relocs
= NULL
;
6026 /* Also discard relocs on undefined weak syms with non-default
6028 if (eh
->dyn_relocs
!= NULL
6029 && h
->root
.type
== bfd_link_hash_undefweak
)
6031 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
6032 eh
->dyn_relocs
= NULL
;
6034 /* Make sure undefined weak symbols are output as a dynamic
6036 else if (h
->dynindx
== -1
6040 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6045 else if (ELIMINATE_COPY_RELOCS
)
6047 /* For the non-shared case, discard space for relocs against
6048 symbols which turn out to need copy relocs or are not
6054 /* Make sure this symbol is output as a dynamic symbol.
6055 Undefined weak syms won't yet be marked as dynamic. */
6056 if (h
->dynindx
== -1
6057 && !h
->forced_local
)
6059 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6063 /* If that succeeded, we know we'll be keeping all the
6065 if (h
->dynindx
!= -1)
6069 eh
->dyn_relocs
= NULL
;
6074 /* Finally, allocate space. */
6075 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6077 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6078 if (eh
->elf
.type
== STT_GNU_IFUNC
)
6079 sreloc
= htab
->reliplt
;
6080 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6086 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6087 read-only sections. */
6090 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
6092 if (h
->root
.type
== bfd_link_hash_indirect
)
6095 if (readonly_dynrelocs (h
))
6097 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
6099 /* Not an error, just cut short the traversal. */
6105 static const unsigned char glink_eh_frame_cie
[] =
6107 0, 0, 0, 16, /* length. */
6108 0, 0, 0, 0, /* id. */
6109 1, /* CIE version. */
6110 'z', 'R', 0, /* Augmentation string. */
6111 4, /* Code alignment. */
6112 0x7c, /* Data alignment. */
6114 1, /* Augmentation size. */
6115 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6116 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6119 /* Set the sizes of the dynamic sections. */
6122 ppc_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
6123 struct bfd_link_info
*info
)
6125 struct ppc_elf_link_hash_table
*htab
;
6131 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6134 htab
= ppc_elf_hash_table (info
);
6135 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6137 if (elf_hash_table (info
)->dynamic_sections_created
)
6139 /* Set the contents of the .interp section to the interpreter. */
6140 if (info
->executable
)
6142 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6143 BFD_ASSERT (s
!= NULL
);
6144 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6145 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6149 if (htab
->plt_type
== PLT_OLD
)
6150 htab
->got_header_size
= 16;
6151 else if (htab
->plt_type
== PLT_NEW
)
6152 htab
->got_header_size
= 12;
6154 /* Set up .got offsets for local syms, and space for local dynamic
6156 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6158 bfd_signed_vma
*local_got
;
6159 bfd_signed_vma
*end_local_got
;
6160 struct plt_entry
**local_plt
;
6161 struct plt_entry
**end_local_plt
;
6163 bfd_size_type locsymcount
;
6164 Elf_Internal_Shdr
*symtab_hdr
;
6166 if (!is_ppc_elf (ibfd
))
6169 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6171 struct ppc_dyn_relocs
*p
;
6173 for (p
= ((struct ppc_dyn_relocs
*)
6174 elf_section_data (s
)->local_dynrel
);
6178 if (!bfd_is_abs_section (p
->sec
)
6179 && bfd_is_abs_section (p
->sec
->output_section
))
6181 /* Input section has been discarded, either because
6182 it is a copy of a linkonce section or due to
6183 linker script /DISCARD/, so we'll be discarding
6186 else if (htab
->is_vxworks
6187 && strcmp (p
->sec
->output_section
->name
,
6190 /* Relocations in vxworks .tls_vars sections are
6191 handled specially by the loader. */
6193 else if (p
->count
!= 0)
6195 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6197 sreloc
= htab
->reliplt
;
6198 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6199 if ((p
->sec
->output_section
->flags
6200 & (SEC_READONLY
| SEC_ALLOC
))
6201 == (SEC_READONLY
| SEC_ALLOC
))
6202 info
->flags
|= DF_TEXTREL
;
6207 local_got
= elf_local_got_refcounts (ibfd
);
6211 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6212 locsymcount
= symtab_hdr
->sh_info
;
6213 end_local_got
= local_got
+ locsymcount
;
6214 local_plt
= (struct plt_entry
**) end_local_got
;
6215 end_local_plt
= local_plt
+ locsymcount
;
6216 lgot_masks
= (char *) end_local_plt
;
6218 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6221 unsigned int need
= 0;
6222 if ((*lgot_masks
& TLS_TLS
) != 0)
6224 if ((*lgot_masks
& TLS_GD
) != 0)
6226 if ((*lgot_masks
& TLS_LD
) != 0)
6227 htab
->tlsld_got
.refcount
+= 1;
6228 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6230 if ((*lgot_masks
& TLS_DTPREL
) != 0)
6236 *local_got
= (bfd_vma
) -1;
6239 *local_got
= allocate_got (htab
, need
);
6242 asection
*srel
= htab
->relgot
;
6243 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6244 srel
= htab
->reliplt
;
6245 srel
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
6250 *local_got
= (bfd_vma
) -1;
6252 if (htab
->is_vxworks
)
6255 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6256 for (; local_plt
< end_local_plt
; ++local_plt
)
6258 struct plt_entry
*ent
;
6259 bfd_boolean doneone
= FALSE
;
6260 bfd_vma plt_offset
= 0, glink_offset
= 0;
6262 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6263 if (ent
->plt
.refcount
> 0)
6269 plt_offset
= s
->size
;
6272 ent
->plt
.offset
= plt_offset
;
6275 if (!doneone
|| info
->shared
)
6277 glink_offset
= s
->size
;
6278 s
->size
+= GLINK_ENTRY_SIZE
;
6280 ent
->glink_offset
= glink_offset
;
6284 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
6289 ent
->plt
.offset
= (bfd_vma
) -1;
6293 /* Allocate space for global sym dynamic relocs. */
6294 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6296 if (htab
->tlsld_got
.refcount
> 0)
6298 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6300 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
6303 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6305 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6307 unsigned int g_o_t
= 32768;
6309 /* If we haven't allocated the header, do so now. When we get here,
6310 for old plt/got the got size will be 0 to 32764 (not allocated),
6311 or 32780 to 65536 (header allocated). For new plt/got, the
6312 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6313 if (htab
->got
->size
<= 32768)
6315 g_o_t
= htab
->got
->size
;
6316 if (htab
->plt_type
== PLT_OLD
)
6318 htab
->got
->size
+= htab
->got_header_size
;
6321 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6325 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6327 && !(sda
->root
.type
== bfd_link_hash_defined
6328 || sda
->root
.type
== bfd_link_hash_defweak
))
6330 sda
->root
.type
= bfd_link_hash_defined
;
6331 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6332 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6336 if (htab
->glink
!= NULL
6337 && htab
->glink
->size
!= 0
6338 && htab
->elf
.dynamic_sections_created
)
6340 htab
->glink_pltresolve
= htab
->glink
->size
;
6341 /* Space for the branch table. */
6342 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
6343 /* Pad out to align the start of PLTresolve. */
6344 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6346 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6348 if (htab
->params
->emit_stub_syms
)
6350 struct elf_link_hash_entry
*sh
;
6351 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6352 TRUE
, FALSE
, FALSE
);
6355 if (sh
->root
.type
== bfd_link_hash_new
)
6357 sh
->root
.type
= bfd_link_hash_defined
;
6358 sh
->root
.u
.def
.section
= htab
->glink
;
6359 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6360 sh
->ref_regular
= 1;
6361 sh
->def_regular
= 1;
6362 sh
->ref_regular_nonweak
= 1;
6363 sh
->forced_local
= 1;
6366 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6367 TRUE
, FALSE
, FALSE
);
6370 if (sh
->root
.type
== bfd_link_hash_new
)
6372 sh
->root
.type
= bfd_link_hash_defined
;
6373 sh
->root
.u
.def
.section
= htab
->glink
;
6374 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6375 sh
->ref_regular
= 1;
6376 sh
->def_regular
= 1;
6377 sh
->ref_regular_nonweak
= 1;
6378 sh
->forced_local
= 1;
6384 if (htab
->glink
!= NULL
6385 && htab
->glink
->size
!= 0
6386 && htab
->glink_eh_frame
!= NULL
6387 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6388 && _bfd_elf_eh_frame_present (info
))
6390 s
= htab
->glink_eh_frame
;
6391 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6395 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6400 /* We've now determined the sizes of the various dynamic sections.
6401 Allocate memory for them. */
6403 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6405 bfd_boolean strip_section
= TRUE
;
6407 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6413 /* We'd like to strip these sections if they aren't needed, but if
6414 we've exported dynamic symbols from them we must leave them.
6415 It's too late to tell BFD to get rid of the symbols. */
6416 if (htab
->elf
.hplt
!= NULL
)
6417 strip_section
= FALSE
;
6418 /* Strip this section if we don't need it; see the
6421 else if (s
== htab
->iplt
6423 || s
== htab
->glink_eh_frame
6424 || s
== htab
->sgotplt
6426 || s
== htab
->dynbss
6427 || s
== htab
->dynsbss
6428 || s
== htab
->sdata
[0].section
6429 || s
== htab
->sdata
[1].section
)
6431 /* Strip these too. */
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 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6605 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6607 if (h
->plt
.plist
!= NULL
6609 && (!h
->pointer_equality_needed
6610 || !h
->ref_regular_nonweak
))
6613 return _bfd_elf_hash_symbol (h
);
6616 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6618 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6619 used for some functions that are allowed to break the ABI). */
6620 static const int shared_stub_entry
[] =
6622 0x7c0802a6, /* mflr 0 */
6623 0x429f0005, /* bcl 20, 31, .Lxxx */
6624 0x7d8802a6, /* mflr 12 */
6625 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6626 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6627 0x7c0803a6, /* mtlr 0 */
6628 0x7d8903a6, /* mtctr 12 */
6629 0x4e800420, /* bctr */
6632 static const int stub_entry
[] =
6634 0x3d800000, /* lis 12,xxx@ha */
6635 0x398c0000, /* addi 12,12,xxx@l */
6636 0x7d8903a6, /* mtctr 12 */
6637 0x4e800420, /* bctr */
6640 struct ppc_elf_relax_info
6642 unsigned int workaround_size
;
6645 /* This function implements long branch trampolines, and the ppc476
6646 icache bug workaround. Any section needing trampolines or patch
6647 space for the workaround has its size extended so that we can
6648 add trampolines at the end of the section. */
6651 ppc_elf_relax_section (bfd
*abfd
,
6653 struct bfd_link_info
*link_info
,
6658 struct one_fixup
*next
;
6660 /* Final link, can use the symbol offset. For a
6661 relocatable link we use the symbol's index. */
6666 Elf_Internal_Shdr
*symtab_hdr
;
6667 bfd_byte
*contents
= NULL
;
6668 Elf_Internal_Sym
*isymbuf
= NULL
;
6669 Elf_Internal_Rela
*internal_relocs
= NULL
;
6670 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6671 struct one_fixup
*fixups
= NULL
;
6672 struct ppc_elf_relax_info
*relax_info
= NULL
;
6673 unsigned changes
= 0;
6674 bfd_boolean workaround_change
;
6675 struct ppc_elf_link_hash_table
*htab
;
6676 bfd_size_type trampbase
, trampoff
, newsize
;
6678 bfd_boolean maybe_pasted
;
6682 /* No need to do anything with non-alloc or non-code sections. */
6683 if ((isec
->flags
& SEC_ALLOC
) == 0
6684 || (isec
->flags
& SEC_CODE
) == 0
6685 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6689 /* We cannot represent the required PIC relocs in the output, so don't
6690 do anything. The linker doesn't support mixing -shared and -r
6692 if (link_info
->relocatable
&& link_info
->shared
)
6695 htab
= ppc_elf_hash_table (link_info
);
6699 isec
->size
= (isec
->size
+ 3) & -4;
6700 if (isec
->rawsize
== 0)
6701 isec
->rawsize
= isec
->size
;
6702 trampbase
= isec
->size
;
6704 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6705 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6706 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6708 if (htab
->params
->ppc476_workaround
)
6710 if (elf_section_data (isec
)->sec_info
== NULL
)
6712 elf_section_data (isec
)->sec_info
6713 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
6714 if (elf_section_data (isec
)->sec_info
== NULL
)
6717 relax_info
= elf_section_data (isec
)->sec_info
;
6718 trampbase
-= relax_info
->workaround_size
;
6721 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6722 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6723 /* Space for a branch around any trampolines. */
6724 trampoff
= trampbase
;
6725 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
6728 symtab_hdr
= &elf_symtab_hdr (abfd
);
6730 if (htab
->params
->branch_trampolines
)
6732 /* Get a copy of the native relocations. */
6733 if (isec
->reloc_count
!= 0)
6735 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6736 link_info
->keep_memory
);
6737 if (internal_relocs
== NULL
)
6741 got2
= bfd_get_section_by_name (abfd
, ".got2");
6743 irelend
= internal_relocs
+ isec
->reloc_count
;
6744 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6746 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6749 struct one_fixup
*f
;
6750 size_t insn_offset
= 0;
6751 bfd_vma max_branch_offset
, val
;
6754 struct elf_link_hash_entry
*h
;
6755 struct plt_entry
**plist
;
6756 unsigned char sym_type
;
6761 case R_PPC_LOCAL24PC
:
6762 case R_PPC_PLTREL24
:
6763 max_branch_offset
= 1 << 25;
6767 case R_PPC_REL14_BRTAKEN
:
6768 case R_PPC_REL14_BRNTAKEN
:
6769 max_branch_offset
= 1 << 15;
6776 /* Get the value of the symbol referred to by the reloc. */
6778 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6780 /* A local symbol. */
6781 Elf_Internal_Sym
*isym
;
6783 /* Read this BFD's local symbols. */
6784 if (isymbuf
== NULL
)
6786 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6787 if (isymbuf
== NULL
)
6788 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
6789 symtab_hdr
->sh_info
, 0,
6794 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6795 if (isym
->st_shndx
== SHN_UNDEF
)
6796 tsec
= bfd_und_section_ptr
;
6797 else if (isym
->st_shndx
== SHN_ABS
)
6798 tsec
= bfd_abs_section_ptr
;
6799 else if (isym
->st_shndx
== SHN_COMMON
)
6800 tsec
= bfd_com_section_ptr
;
6802 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6804 toff
= isym
->st_value
;
6805 sym_type
= ELF_ST_TYPE (isym
->st_info
);
6809 /* Global symbol handling. */
6812 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6813 h
= elf_sym_hashes (abfd
)[indx
];
6815 while (h
->root
.type
== bfd_link_hash_indirect
6816 || h
->root
.type
== bfd_link_hash_warning
)
6817 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6819 if (h
->root
.type
== bfd_link_hash_defined
6820 || h
->root
.type
== bfd_link_hash_defweak
)
6822 tsec
= h
->root
.u
.def
.section
;
6823 toff
= h
->root
.u
.def
.value
;
6825 else if (h
->root
.type
== bfd_link_hash_undefined
6826 || h
->root
.type
== bfd_link_hash_undefweak
)
6828 tsec
= bfd_und_section_ptr
;
6829 toff
= link_info
->relocatable
? indx
: 0;
6834 /* If this branch is to __tls_get_addr then we may later
6835 optimise away the call. We won't be needing a long-
6836 branch stub in that case. */
6837 if (link_info
->executable
6838 && !link_info
->relocatable
6839 && h
== htab
->tls_get_addr
6840 && irel
!= internal_relocs
)
6842 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
6843 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
6844 unsigned int tls_mask
= 0;
6846 /* The previous reloc should be one of R_PPC_TLSGD or
6847 R_PPC_TLSLD, or for older object files, a reloc
6848 on the __tls_get_addr arg setup insn. Get tls
6849 mask bits from the symbol on that reloc. */
6850 if (t_symndx
< symtab_hdr
->sh_info
)
6852 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6854 if (local_got_offsets
!= NULL
)
6856 struct plt_entry
**local_plt
= (struct plt_entry
**)
6857 (local_got_offsets
+ symtab_hdr
->sh_info
);
6858 char *lgot_masks
= (char *)
6859 (local_plt
+ symtab_hdr
->sh_info
);
6860 tls_mask
= lgot_masks
[t_symndx
];
6865 struct elf_link_hash_entry
*th
6866 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
6868 while (th
->root
.type
== bfd_link_hash_indirect
6869 || th
->root
.type
== bfd_link_hash_warning
)
6870 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
6873 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
6876 /* The mask bits tell us if the call will be
6878 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
6879 && (t_rtype
== R_PPC_TLSGD
6880 || t_rtype
== R_PPC_GOT_TLSGD16
6881 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
6883 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
6884 && (t_rtype
== R_PPC_TLSLD
6885 || t_rtype
== R_PPC_GOT_TLSLD16
6886 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
6893 /* The condition here under which we call find_plt_ent must
6894 match that in relocate_section. If we call find_plt_ent here
6895 but not in relocate_section, or vice versa, then the branch
6896 destination used here may be incorrect. */
6900 /* We know is_branch_reloc (r_type) is true. */
6901 if (h
->type
== STT_GNU_IFUNC
6902 || r_type
== R_PPC_PLTREL24
)
6903 plist
= &h
->plt
.plist
;
6905 else if (sym_type
== STT_GNU_IFUNC
6906 && elf_local_got_offsets (abfd
) != NULL
)
6908 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6909 struct plt_entry
**local_plt
= (struct plt_entry
**)
6910 (local_got_offsets
+ symtab_hdr
->sh_info
);
6911 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
6916 struct plt_entry
*ent
;
6918 if (r_type
== R_PPC_PLTREL24
&& link_info
->shared
)
6919 addend
= irel
->r_addend
;
6920 ent
= find_plt_ent (plist
, got2
, addend
);
6923 if (htab
->plt_type
== PLT_NEW
6925 || !htab
->elf
.dynamic_sections_created
6926 || h
->dynindx
== -1)
6929 toff
= ent
->glink_offset
;
6934 toff
= ent
->plt
.offset
;
6939 /* If the branch and target are in the same section, you have
6940 no hope of adding stubs. We'll error out later should the
6945 /* There probably isn't any reason to handle symbols in
6946 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6947 attribute for a code section, and we are only looking at
6948 branches. However, implement it correctly here as a
6949 reference for other target relax_section functions. */
6950 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
6952 /* At this stage in linking, no SEC_MERGE symbol has been
6953 adjusted, so all references to such symbols need to be
6954 passed through _bfd_merged_section_offset. (Later, in
6955 relocate_section, all SEC_MERGE symbols *except* for
6956 section symbols have been adjusted.)
6958 gas may reduce relocations against symbols in SEC_MERGE
6959 sections to a relocation against the section symbol when
6960 the original addend was zero. When the reloc is against
6961 a section symbol we should include the addend in the
6962 offset passed to _bfd_merged_section_offset, since the
6963 location of interest is the original symbol. On the
6964 other hand, an access to "sym+addend" where "sym" is not
6965 a section symbol should not include the addend; Such an
6966 access is presumed to be an offset from "sym"; The
6967 location of interest is just "sym". */
6968 if (sym_type
== STT_SECTION
)
6969 toff
+= irel
->r_addend
;
6972 = _bfd_merged_section_offset (abfd
, &tsec
,
6973 elf_section_data (tsec
)->sec_info
,
6976 if (sym_type
!= STT_SECTION
)
6977 toff
+= irel
->r_addend
;
6979 /* PLTREL24 addends are special. */
6980 else if (r_type
!= R_PPC_PLTREL24
)
6981 toff
+= irel
->r_addend
;
6983 /* Attempted -shared link of non-pic code loses. */
6984 if ((!link_info
->relocatable
6985 && tsec
== bfd_und_section_ptr
)
6986 || tsec
->output_section
== NULL
6987 || (tsec
->owner
!= NULL
6988 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
6991 roff
= irel
->r_offset
;
6993 /* If the branch is in range, no need to do anything. */
6994 if (tsec
!= bfd_und_section_ptr
6995 && (!link_info
->relocatable
6996 /* A relocatable link may have sections moved during
6997 final link, so do not presume they remain in range. */
6998 || tsec
->output_section
== isec
->output_section
))
7000 bfd_vma symaddr
, reladdr
;
7002 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7003 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7004 if (symaddr
- reladdr
+ max_branch_offset
7005 < 2 * max_branch_offset
)
7009 /* Look for an existing fixup to this address. */
7010 for (f
= fixups
; f
; f
= f
->next
)
7011 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7017 unsigned long stub_rtype
;
7019 val
= trampoff
- roff
;
7020 if (val
>= max_branch_offset
)
7021 /* Oh dear, we can't reach a trampoline. Don't try to add
7022 one. We'll report an error later. */
7025 if (link_info
->shared
)
7027 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7032 size
= 4 * ARRAY_SIZE (stub_entry
);
7035 stub_rtype
= R_PPC_RELAX
;
7036 if (tsec
== htab
->plt
7037 || tsec
== htab
->glink
)
7039 stub_rtype
= R_PPC_RELAX_PLT
;
7040 if (r_type
== R_PPC_PLTREL24
)
7041 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7044 /* Hijack the old relocation. Since we need two
7045 relocations for this use a "composite" reloc. */
7046 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7048 irel
->r_offset
= trampoff
+ insn_offset
;
7049 if (r_type
== R_PPC_PLTREL24
7050 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7053 /* Record the fixup so we don't do it again this section. */
7054 f
= bfd_malloc (sizeof (*f
));
7058 f
->trampoff
= trampoff
;
7066 val
= f
->trampoff
- roff
;
7067 if (val
>= max_branch_offset
)
7070 /* Nop out the reloc, since we're finalizing things here. */
7071 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7074 /* Get the section contents. */
7075 if (contents
== NULL
)
7077 /* Get cached copy if it exists. */
7078 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7079 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7080 /* Go get them off disk. */
7081 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7085 /* Fix up the existing branch to hit the trampoline. */
7086 hit_addr
= contents
+ roff
;
7090 case R_PPC_LOCAL24PC
:
7091 case R_PPC_PLTREL24
:
7092 t0
= bfd_get_32 (abfd
, hit_addr
);
7094 t0
|= val
& 0x3fffffc;
7095 bfd_put_32 (abfd
, t0
, hit_addr
);
7099 case R_PPC_REL14_BRTAKEN
:
7100 case R_PPC_REL14_BRNTAKEN
:
7101 t0
= bfd_get_32 (abfd
, hit_addr
);
7104 bfd_put_32 (abfd
, t0
, hit_addr
);
7109 while (fixups
!= NULL
)
7111 struct one_fixup
*f
= fixups
;
7112 fixups
= fixups
->next
;
7117 workaround_change
= FALSE
;
7119 if (htab
->params
->ppc476_workaround
7120 && (!link_info
->relocatable
7121 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7123 bfd_vma addr
, end_addr
;
7124 unsigned int crossings
;
7125 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7127 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7128 end_addr
= addr
+ trampoff
- 1;
7130 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7133 /* Keep space aligned, to ensure the patch code itself does
7134 not cross a page. Don't decrease size calculated on a
7135 previous pass as otherwise we might never settle on a layout. */
7136 newsize
= 15 - (end_addr
& 15);
7137 newsize
+= crossings
* 16;
7138 if (relax_info
->workaround_size
< newsize
)
7140 relax_info
->workaround_size
= newsize
;
7141 workaround_change
= TRUE
;
7143 /* Ensure relocate_section is called. */
7144 isec
->flags
|= SEC_RELOC
;
7146 newsize
= trampoff
+ relax_info
->workaround_size
;
7149 if (changes
|| workaround_change
)
7150 isec
->size
= newsize
;
7153 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7155 if (! link_info
->keep_memory
)
7159 /* Cache the symbols for elf_link_input_bfd. */
7160 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7164 if (contents
!= NULL
7165 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7167 if (!changes
&& !link_info
->keep_memory
)
7171 /* Cache the section contents for elf_link_input_bfd. */
7172 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7178 /* Append sufficient NOP relocs so we can write out relocation
7179 information for the trampolines. */
7180 Elf_Internal_Shdr
*rel_hdr
;
7181 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7182 * sizeof (*new_relocs
));
7187 memcpy (new_relocs
, internal_relocs
,
7188 isec
->reloc_count
* sizeof (*new_relocs
));
7189 for (ix
= changes
; ix
--;)
7191 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7193 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7195 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7196 free (internal_relocs
);
7197 elf_section_data (isec
)->relocs
= new_relocs
;
7198 isec
->reloc_count
+= changes
;
7199 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7200 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7202 else if (internal_relocs
!= NULL
7203 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7204 free (internal_relocs
);
7206 *again
= changes
!= 0 || workaround_change
;
7210 while (fixups
!= NULL
)
7212 struct one_fixup
*f
= fixups
;
7213 fixups
= fixups
->next
;
7216 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7218 if (contents
!= NULL
7219 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7221 if (internal_relocs
!= NULL
7222 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7223 free (internal_relocs
);
7227 /* What to do when ld finds relocations against symbols defined in
7228 discarded sections. */
7231 ppc_elf_action_discarded (asection
*sec
)
7233 if (strcmp (".fixup", sec
->name
) == 0)
7236 if (strcmp (".got2", sec
->name
) == 0)
7239 return _bfd_elf_default_action_discarded (sec
);
7242 /* Fill in the address for a pointer generated in a linker section. */
7245 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7246 elf_linker_section_t
*lsect
,
7247 struct elf_link_hash_entry
*h
,
7249 const Elf_Internal_Rela
*rel
)
7251 elf_linker_section_pointers_t
*linker_section_ptr
;
7253 BFD_ASSERT (lsect
!= NULL
);
7257 /* Handle global symbol. */
7258 struct ppc_elf_link_hash_entry
*eh
;
7260 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7261 BFD_ASSERT (eh
->elf
.def_regular
);
7262 linker_section_ptr
= eh
->linker_section_pointer
;
7266 /* Handle local symbol. */
7267 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7269 BFD_ASSERT (is_ppc_elf (input_bfd
));
7270 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7271 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7274 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7277 BFD_ASSERT (linker_section_ptr
!= NULL
);
7279 /* Offset will always be a multiple of four, so use the bottom bit
7280 as a "written" flag. */
7281 if ((linker_section_ptr
->offset
& 1) == 0)
7283 bfd_put_32 (lsect
->section
->owner
,
7284 relocation
+ linker_section_ptr
->addend
,
7285 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7286 linker_section_ptr
->offset
+= 1;
7289 relocation
= (lsect
->section
->output_section
->vma
7290 + lsect
->section
->output_offset
7291 + linker_section_ptr
->offset
- 1
7292 - SYM_VAL (lsect
->sym
));
7296 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7297 lsect
->name
, (long) relocation
, (long) relocation
);
7303 #define PPC_LO(v) ((v) & 0xffff)
7304 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7305 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7308 write_glink_stub (struct plt_entry
*ent
, asection
*plt_sec
, unsigned char *p
,
7309 struct bfd_link_info
*info
)
7311 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7312 bfd
*output_bfd
= info
->output_bfd
;
7315 plt
= ((ent
->plt
.offset
& ~1)
7316 + plt_sec
->output_section
->vma
7317 + plt_sec
->output_offset
);
7323 if (ent
->addend
>= 32768)
7325 + ent
->sec
->output_section
->vma
7326 + ent
->sec
->output_offset
);
7327 else if (htab
->elf
.hgot
!= NULL
)
7328 got
= SYM_VAL (htab
->elf
.hgot
);
7332 if (plt
+ 0x8000 < 0x10000)
7334 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7336 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7338 bfd_put_32 (output_bfd
, BCTR
, p
);
7340 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7345 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7347 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7349 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7351 bfd_put_32 (output_bfd
, BCTR
, p
);
7357 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7359 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7361 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7363 bfd_put_32 (output_bfd
, BCTR
, p
);
7368 /* Return true if symbol is defined statically. */
7371 is_static_defined (struct elf_link_hash_entry
*h
)
7373 return ((h
->root
.type
== bfd_link_hash_defined
7374 || h
->root
.type
== bfd_link_hash_defweak
)
7375 && h
->root
.u
.def
.section
!= NULL
7376 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7379 /* If INSN is an opcode that may be used with an @tls operand, return
7380 the transformed insn for TLS optimisation, otherwise return 0. If
7381 REG is non-zero only match an insn with RB or RA equal to REG. */
7384 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7388 if ((insn
& (0x3f << 26)) != 31 << 26)
7391 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7392 rtra
= insn
& ((1 << 26) - (1 << 16));
7393 else if (((insn
>> 16) & 0x1f) == reg
)
7394 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7398 if ((insn
& (0x3ff << 1)) == 266 << 1)
7401 else if ((insn
& (0x1f << 1)) == 23 << 1
7402 && ((insn
& (0x1f << 6)) < 14 << 6
7403 || ((insn
& (0x1f << 6)) >= 16 << 6
7404 && (insn
& (0x1f << 6)) < 24 << 6)))
7405 /* load and store indexed -> dform. */
7406 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7407 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7408 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7409 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7410 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7412 insn
= (58 << 26) | 2;
7419 /* If INSN is an opcode that may be used with an @tprel operand, return
7420 the transformed insn for an undefined weak symbol, ie. with the
7421 thread pointer REG operand removed. Otherwise return 0. */
7424 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7426 if ((insn
& (0x1f << 16)) == reg
<< 16
7427 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7428 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7429 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7430 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7431 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7432 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7433 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7434 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7435 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7436 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7437 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7438 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7439 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7440 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7441 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7442 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7444 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7445 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7447 insn
&= ~(0x1f << 16);
7449 else if ((insn
& (0x1f << 21)) == reg
<< 21
7450 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7451 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7452 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7454 insn
&= ~(0x1f << 21);
7455 insn
|= (insn
& (0x1f << 16)) << 5;
7456 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7457 insn
-= 2 >> 26; /* convert to ori,oris */
7465 is_insn_ds_form (unsigned int insn
)
7467 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7468 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7469 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7470 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7474 is_insn_dq_form (unsigned int insn
)
7476 return (insn
& (0x3f << 26)) == 56u << 26; /* lq */
7479 /* The RELOCATE_SECTION function is called by the ELF backend linker
7480 to handle the relocations for a section.
7482 The relocs are always passed as Rela structures; if the section
7483 actually uses Rel structures, the r_addend field will always be
7486 This function is responsible for adjust the section contents as
7487 necessary, and (if using Rela relocs and generating a
7488 relocatable output file) adjusting the reloc addend as
7491 This function does not have to worry about setting the reloc
7492 address or the reloc symbol index.
7494 LOCAL_SYMS is a pointer to the swapped in local symbols.
7496 LOCAL_SECTIONS is an array giving the section in the input file
7497 corresponding to the st_shndx field of each local symbol.
7499 The global hash table entry for the global symbols can be found
7500 via elf_sym_hashes (input_bfd).
7502 When generating relocatable output, this function must handle
7503 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7504 going to be the section symbol corresponding to the output
7505 section, which means that the addend must be adjusted
7509 ppc_elf_relocate_section (bfd
*output_bfd
,
7510 struct bfd_link_info
*info
,
7512 asection
*input_section
,
7514 Elf_Internal_Rela
*relocs
,
7515 Elf_Internal_Sym
*local_syms
,
7516 asection
**local_sections
)
7518 Elf_Internal_Shdr
*symtab_hdr
;
7519 struct elf_link_hash_entry
**sym_hashes
;
7520 struct ppc_elf_link_hash_table
*htab
;
7521 Elf_Internal_Rela
*rel
;
7522 Elf_Internal_Rela
*relend
;
7523 Elf_Internal_Rela outrel
;
7525 bfd_vma
*local_got_offsets
;
7526 bfd_boolean ret
= TRUE
;
7527 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
7528 bfd_boolean is_vxworks_tls
;
7531 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7532 "%ld relocations%s",
7533 input_bfd
, input_section
,
7534 (long) input_section
->reloc_count
,
7535 (info
->relocatable
) ? " (relocatable)" : "");
7538 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7540 /* Initialize howto table if not already done. */
7541 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7542 ppc_elf_howto_init ();
7544 htab
= ppc_elf_hash_table (info
);
7545 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7546 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7547 sym_hashes
= elf_sym_hashes (input_bfd
);
7548 /* We have to handle relocations in vxworks .tls_vars sections
7549 specially, because the dynamic loader is 'weird'. */
7550 is_vxworks_tls
= (htab
->is_vxworks
&& info
->shared
7551 && !strcmp (input_section
->output_section
->name
,
7554 relend
= relocs
+ input_section
->reloc_count
;
7555 for (; rel
< relend
; rel
++)
7557 enum elf_ppc_reloc_type r_type
;
7559 bfd_reloc_status_type r
;
7560 Elf_Internal_Sym
*sym
;
7562 struct elf_link_hash_entry
*h
;
7563 const char *sym_name
;
7564 reloc_howto_type
*howto
;
7565 unsigned long r_symndx
;
7567 bfd_vma branch_bit
, from
;
7568 bfd_boolean unresolved_reloc
;
7570 unsigned int tls_type
, tls_mask
, tls_gd
;
7571 struct plt_entry
**ifunc
;
7572 struct reloc_howto_struct alt_howto
;
7574 r_type
= ELF32_R_TYPE (rel
->r_info
);
7578 unresolved_reloc
= FALSE
;
7580 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7582 if (r_symndx
< symtab_hdr
->sh_info
)
7584 sym
= local_syms
+ r_symndx
;
7585 sec
= local_sections
[r_symndx
];
7586 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7588 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7592 bfd_boolean ignored
;
7594 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7595 r_symndx
, symtab_hdr
, sym_hashes
,
7597 unresolved_reloc
, warned
, ignored
);
7599 sym_name
= h
->root
.root
.string
;
7602 if (sec
!= NULL
&& discarded_section (sec
))
7604 /* For relocs against symbols from removed linkonce sections,
7605 or sections discarded by a linker script, we just want the
7606 section contents zeroed. Avoid any special processing. */
7608 if (r_type
< R_PPC_max
)
7609 howto
= ppc_elf_howto_table
[r_type
];
7610 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
7611 rel
, 1, relend
, howto
, 0, contents
);
7614 if (info
->relocatable
)
7617 && r_type
== R_PPC_PLTREL24
7618 && rel
->r_addend
!= 0)
7620 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7621 addend specifies the GOT pointer offset within .got2. */
7622 rel
->r_addend
+= got2
->output_offset
;
7624 if (r_type
!= R_PPC_RELAX_PLT
7625 && r_type
!= R_PPC_RELAX_PLTREL24
7626 && r_type
!= R_PPC_RELAX
)
7630 /* TLS optimizations. Replace instruction sequences and relocs
7631 based on information we collected in tls_optimize. We edit
7632 RELOCS so that --emit-relocs will output something sensible
7633 for the final instruction stream. */
7637 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7638 else if (local_got_offsets
!= NULL
)
7640 struct plt_entry
**local_plt
;
7643 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7644 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7645 tls_mask
= lgot_masks
[r_symndx
];
7648 /* Ensure reloc mapping code below stays sane. */
7649 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7650 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7651 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7652 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7653 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7654 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7655 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7656 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
7663 case R_PPC_GOT_TPREL16
:
7664 case R_PPC_GOT_TPREL16_LO
:
7665 if ((tls_mask
& TLS_TLS
) != 0
7666 && (tls_mask
& TLS_TPREL
) == 0)
7670 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
7672 insn
|= 0x3c020000; /* addis 0,2,0 */
7673 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
7674 r_type
= R_PPC_TPREL16_HA
;
7675 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7680 if ((tls_mask
& TLS_TLS
) != 0
7681 && (tls_mask
& TLS_TPREL
) == 0)
7685 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7686 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
7689 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7690 r_type
= R_PPC_TPREL16_LO
;
7691 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7693 /* Was PPC_TLS which sits on insn boundary, now
7694 PPC_TPREL16_LO which is at low-order half-word. */
7695 rel
->r_offset
+= d_offset
;
7699 case R_PPC_GOT_TLSGD16_HI
:
7700 case R_PPC_GOT_TLSGD16_HA
:
7701 tls_gd
= TLS_TPRELGD
;
7702 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7706 case R_PPC_GOT_TLSLD16_HI
:
7707 case R_PPC_GOT_TLSLD16_HA
:
7708 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7711 if ((tls_mask
& tls_gd
) != 0)
7712 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7713 + R_PPC_GOT_TPREL16
);
7716 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
7717 rel
->r_offset
-= d_offset
;
7718 r_type
= R_PPC_NONE
;
7720 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7724 case R_PPC_GOT_TLSGD16
:
7725 case R_PPC_GOT_TLSGD16_LO
:
7726 tls_gd
= TLS_TPRELGD
;
7727 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7731 case R_PPC_GOT_TLSLD16
:
7732 case R_PPC_GOT_TLSLD16_LO
:
7733 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7735 unsigned int insn1
, insn2
;
7739 offset
= (bfd_vma
) -1;
7740 /* If not using the newer R_PPC_TLSGD/LD to mark
7741 __tls_get_addr calls, we must trust that the call
7742 stays with its arg setup insns, ie. that the next
7743 reloc is the __tls_get_addr call associated with
7744 the current reloc. Edit both insns. */
7745 if (input_section
->has_tls_get_addr_call
7747 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
7748 htab
->tls_get_addr
))
7749 offset
= rel
[1].r_offset
;
7750 if ((tls_mask
& tls_gd
) != 0)
7753 insn1
= bfd_get_32 (output_bfd
,
7754 contents
+ rel
->r_offset
- d_offset
);
7755 insn1
&= (1 << 26) - 1;
7756 insn1
|= 32 << 26; /* lwz */
7757 if (offset
!= (bfd_vma
) -1)
7759 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7760 insn2
= 0x7c631214; /* add 3,3,2 */
7761 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7763 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7764 + R_PPC_GOT_TPREL16
);
7765 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7770 insn1
= 0x3c620000; /* addis 3,2,0 */
7773 /* Was an LD reloc. */
7775 r_symndx
< symtab_hdr
->sh_info
;
7777 if (local_sections
[r_symndx
] == sec
)
7779 if (r_symndx
>= symtab_hdr
->sh_info
)
7780 r_symndx
= STN_UNDEF
;
7781 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7782 if (r_symndx
!= STN_UNDEF
)
7783 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7784 + sec
->output_offset
7785 + sec
->output_section
->vma
);
7787 r_type
= R_PPC_TPREL16_HA
;
7788 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7789 if (offset
!= (bfd_vma
) -1)
7791 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7792 rel
[1].r_offset
= offset
+ d_offset
;
7793 rel
[1].r_addend
= rel
->r_addend
;
7794 insn2
= 0x38630000; /* addi 3,3,0 */
7795 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7798 bfd_put_32 (output_bfd
, insn1
,
7799 contents
+ rel
->r_offset
- d_offset
);
7802 /* We changed the symbol on an LD reloc. Start over
7803 in order to get h, sym, sec etc. right. */
7811 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7814 bfd_vma offset
= rel
->r_offset
;
7816 if ((tls_mask
& TLS_TPRELGD
) != 0)
7819 r_type
= R_PPC_NONE
;
7820 insn2
= 0x7c631214; /* add 3,3,2 */
7825 r_type
= R_PPC_TPREL16_LO
;
7826 rel
->r_offset
+= d_offset
;
7827 insn2
= 0x38630000; /* addi 3,3,0 */
7829 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7830 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7831 /* Zap the reloc on the _tls_get_addr call too. */
7832 BFD_ASSERT (offset
== rel
[1].r_offset
);
7833 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7838 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7843 r_symndx
< symtab_hdr
->sh_info
;
7845 if (local_sections
[r_symndx
] == sec
)
7847 if (r_symndx
>= symtab_hdr
->sh_info
)
7848 r_symndx
= STN_UNDEF
;
7849 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7850 if (r_symndx
!= STN_UNDEF
)
7851 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7852 + sec
->output_offset
7853 + sec
->output_section
->vma
);
7855 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7856 rel
->r_offset
+= d_offset
;
7857 insn2
= 0x38630000; /* addi 3,3,0 */
7858 bfd_put_32 (output_bfd
, insn2
,
7859 contents
+ rel
->r_offset
- d_offset
);
7860 /* Zap the reloc on the _tls_get_addr call too. */
7861 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
7862 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7869 /* Handle other relocations that tweak non-addend part of insn. */
7876 /* Branch taken prediction relocations. */
7877 case R_PPC_ADDR14_BRTAKEN
:
7878 case R_PPC_REL14_BRTAKEN
:
7879 branch_bit
= BRANCH_PREDICT_BIT
;
7882 /* Branch not taken prediction relocations. */
7883 case R_PPC_ADDR14_BRNTAKEN
:
7884 case R_PPC_REL14_BRNTAKEN
:
7888 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7889 insn
&= ~BRANCH_PREDICT_BIT
;
7892 from
= (rel
->r_offset
7893 + input_section
->output_offset
7894 + input_section
->output_section
->vma
);
7896 /* Invert 'y' bit if not the default. */
7897 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
7898 insn
^= BRANCH_PREDICT_BIT
;
7900 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7906 if (!htab
->is_vxworks
)
7908 struct plt_entry
*ent
;
7912 if (h
->type
== STT_GNU_IFUNC
)
7913 ifunc
= &h
->plt
.plist
;
7915 else if (local_got_offsets
!= NULL
7916 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
7918 struct plt_entry
**local_plt
;
7920 local_plt
= (struct plt_entry
**) (local_got_offsets
7921 + symtab_hdr
->sh_info
);
7922 ifunc
= local_plt
+ r_symndx
;
7928 || is_branch_reloc (r_type
)))
7931 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
7932 addend
= rel
->r_addend
;
7933 ent
= find_plt_ent (ifunc
, got2
, addend
);
7937 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
7939 Elf_Internal_Rela rela
;
7942 rela
.r_offset
= (htab
->iplt
->output_section
->vma
7943 + htab
->iplt
->output_offset
7945 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
7946 rela
.r_addend
= relocation
;
7947 loc
= htab
->reliplt
->contents
;
7948 loc
+= (htab
->reliplt
->reloc_count
++
7949 * sizeof (Elf32_External_Rela
));
7950 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7952 ent
->plt
.offset
|= 1;
7954 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
7956 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
7957 + ent
->glink_offset
);
7958 write_glink_stub (ent
, htab
->iplt
, p
, info
);
7959 ent
->glink_offset
|= 1;
7962 unresolved_reloc
= FALSE
;
7963 if (htab
->plt_type
== PLT_NEW
7964 || !htab
->elf
.dynamic_sections_created
7966 || h
->dynindx
== -1)
7967 relocation
= (htab
->glink
->output_section
->vma
7968 + htab
->glink
->output_offset
7969 + (ent
->glink_offset
& ~1));
7971 relocation
= (htab
->plt
->output_section
->vma
7972 + htab
->plt
->output_offset
7977 addend
= rel
->r_addend
;
7980 if (r_type
< R_PPC_max
)
7981 howto
= ppc_elf_howto_table
[r_type
];
7985 info
->callbacks
->einfo
7986 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7987 input_bfd
, (int) r_type
, sym_name
);
7989 bfd_set_error (bfd_error_bad_value
);
7997 case R_PPC_EMB_MRKREF
:
7998 case R_PPC_GNU_VTINHERIT
:
7999 case R_PPC_GNU_VTENTRY
:
8002 /* GOT16 relocations. Like an ADDR16 using the symbol's
8003 address in the GOT as relocation value instead of the
8004 symbol's value itself. Also, create a GOT entry for the
8005 symbol and put the symbol value there. */
8006 case R_PPC_GOT_TLSGD16
:
8007 case R_PPC_GOT_TLSGD16_LO
:
8008 case R_PPC_GOT_TLSGD16_HI
:
8009 case R_PPC_GOT_TLSGD16_HA
:
8010 tls_type
= TLS_TLS
| TLS_GD
;
8013 case R_PPC_GOT_TLSLD16
:
8014 case R_PPC_GOT_TLSLD16_LO
:
8015 case R_PPC_GOT_TLSLD16_HI
:
8016 case R_PPC_GOT_TLSLD16_HA
:
8017 tls_type
= TLS_TLS
| TLS_LD
;
8020 case R_PPC_GOT_TPREL16
:
8021 case R_PPC_GOT_TPREL16_LO
:
8022 case R_PPC_GOT_TPREL16_HI
:
8023 case R_PPC_GOT_TPREL16_HA
:
8024 tls_type
= TLS_TLS
| TLS_TPREL
;
8027 case R_PPC_GOT_DTPREL16
:
8028 case R_PPC_GOT_DTPREL16_LO
:
8029 case R_PPC_GOT_DTPREL16_HI
:
8030 case R_PPC_GOT_DTPREL16_HA
:
8031 tls_type
= TLS_TLS
| TLS_DTPREL
;
8035 case R_PPC_GOT16_LO
:
8036 case R_PPC_GOT16_HI
:
8037 case R_PPC_GOT16_HA
:
8041 /* Relocation is to the entry for this symbol in the global
8047 if (htab
->got
== NULL
)
8051 if (tls_type
== (TLS_TLS
| TLS_LD
)
8053 || !h
->def_dynamic
))
8054 offp
= &htab
->tlsld_got
.offset
;
8058 dyn
= htab
->elf
.dynamic_sections_created
;
8059 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
8061 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
8062 /* This is actually a static link, or it is a
8063 -Bsymbolic link and the symbol is defined
8064 locally, or the symbol was forced to be local
8065 because of a version file. */
8069 BFD_ASSERT (h
->dynindx
!= -1);
8071 unresolved_reloc
= FALSE
;
8073 offp
= &h
->got
.offset
;
8077 if (local_got_offsets
== NULL
)
8079 offp
= &local_got_offsets
[r_symndx
];
8082 /* The offset must always be a multiple of 4. We use the
8083 least significant bit to record whether we have already
8084 processed this entry. */
8090 unsigned int tls_m
= (tls_mask
8091 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8092 | TLS_TPREL
| TLS_TPRELGD
));
8094 if (offp
== &htab
->tlsld_got
.offset
)
8100 /* We might have multiple got entries for this sym.
8101 Initialize them all. */
8106 if ((tls_m
& TLS_LD
) != 0)
8108 tls_ty
= TLS_TLS
| TLS_LD
;
8111 else if ((tls_m
& TLS_GD
) != 0)
8113 tls_ty
= TLS_TLS
| TLS_GD
;
8116 else if ((tls_m
& TLS_DTPREL
) != 0)
8118 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8119 tls_m
&= ~TLS_DTPREL
;
8121 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8123 tls_ty
= TLS_TLS
| TLS_TPREL
;
8127 /* Generate relocs for the dynamic linker. */
8128 if ((info
->shared
|| indx
!= 0)
8129 && (offp
== &htab
->tlsld_got
.offset
8131 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8132 || h
->root
.type
!= bfd_link_hash_undefweak
))
8134 asection
*rsec
= htab
->relgot
;
8138 rsec
= htab
->reliplt
;
8139 outrel
.r_offset
= (htab
->got
->output_section
->vma
8140 + htab
->got
->output_offset
8142 outrel
.r_addend
= 0;
8143 if (tls_ty
& (TLS_LD
| TLS_GD
))
8145 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8146 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8148 loc
= rsec
->contents
;
8149 loc
+= (rsec
->reloc_count
++
8150 * sizeof (Elf32_External_Rela
));
8151 bfd_elf32_swap_reloca_out (output_bfd
,
8153 outrel
.r_offset
+= 4;
8155 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8158 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8159 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8160 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8161 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8163 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8164 else if (ifunc
!= NULL
)
8165 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8167 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8168 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8170 outrel
.r_addend
+= relocation
;
8171 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8172 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8174 loc
= rsec
->contents
;
8175 loc
+= (rsec
->reloc_count
++
8176 * sizeof (Elf32_External_Rela
));
8177 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8180 /* Init the .got section contents if we're not
8181 emitting a reloc. */
8184 bfd_vma value
= relocation
;
8186 if (tls_ty
== (TLS_TLS
| TLS_LD
))
8188 else if (tls_ty
!= 0)
8190 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8191 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8192 value
+= DTP_OFFSET
- TP_OFFSET
;
8194 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8196 bfd_put_32 (output_bfd
, value
,
8197 htab
->got
->contents
+ off
+ 4);
8201 bfd_put_32 (output_bfd
, value
,
8202 htab
->got
->contents
+ off
);
8206 if (tls_ty
& (TLS_LD
| TLS_GD
))
8215 if (off
>= (bfd_vma
) -2)
8218 if ((tls_type
& TLS_TLS
) != 0)
8220 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8222 if ((tls_mask
& TLS_LD
) != 0
8224 || !h
->def_dynamic
))
8226 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8228 if ((tls_mask
& TLS_GD
) != 0)
8230 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8232 if ((tls_mask
& TLS_DTPREL
) != 0)
8239 relocation
= (htab
->got
->output_section
->vma
8240 + htab
->got
->output_offset
8242 - SYM_VAL (htab
->elf
.hgot
));
8244 /* Addends on got relocations don't make much sense.
8245 x+off@got is actually x@got+off, and since the got is
8246 generated by a hash table traversal, the value in the
8247 got at entry m+n bears little relation to the entry m. */
8249 info
->callbacks
->einfo
8250 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8251 input_bfd
, input_section
, rel
->r_offset
,
8257 /* Relocations that need no special processing. */
8258 case R_PPC_LOCAL24PC
:
8259 /* It makes no sense to point a local relocation
8260 at a symbol not in this object. */
8261 if (unresolved_reloc
)
8263 if (! (*info
->callbacks
->undefined_symbol
) (info
,
8264 h
->root
.root
.string
,
8274 case R_PPC_DTPREL16
:
8275 case R_PPC_DTPREL16_LO
:
8276 case R_PPC_DTPREL16_HI
:
8277 case R_PPC_DTPREL16_HA
:
8278 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8281 /* Relocations that may need to be propagated if this is a shared
8284 case R_PPC_TPREL16_LO
:
8285 case R_PPC_TPREL16_HI
:
8286 case R_PPC_TPREL16_HA
:
8288 && h
->root
.type
== bfd_link_hash_undefweak
8289 && h
->dynindx
== -1)
8291 /* Make this relocation against an undefined weak symbol
8292 resolve to zero. This is really just a tweak, since
8293 code using weak externs ought to check that they are
8294 defined before using them. */
8295 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8296 unsigned int insn
= bfd_get_32 (output_bfd
, p
);
8297 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8299 bfd_put_32 (output_bfd
, insn
, p
);
8302 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8303 /* The TPREL16 relocs shouldn't really be used in shared
8304 libs as they will result in DT_TEXTREL being set, but
8305 support them anyway. */
8309 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8312 case R_PPC_DTPREL32
:
8313 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8316 case R_PPC_DTPMOD32
:
8322 case R_PPC_REL16_LO
:
8323 case R_PPC_REL16_HI
:
8324 case R_PPC_REL16_HA
:
8328 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8334 case R_PPC_ADDR16_LO
:
8335 case R_PPC_ADDR16_HI
:
8336 case R_PPC_ADDR16_HA
:
8341 case R_PPC_VLE_REL8
:
8342 case R_PPC_VLE_REL15
:
8343 case R_PPC_VLE_REL24
:
8346 case R_PPC_REL14_BRTAKEN
:
8347 case R_PPC_REL14_BRNTAKEN
:
8348 /* If these relocations are not to a named symbol, they can be
8349 handled right here, no need to bother the dynamic linker. */
8350 if (SYMBOL_CALLS_LOCAL (info
, h
)
8351 || h
== htab
->elf
.hgot
)
8357 case R_PPC_ADDR14_BRTAKEN
:
8358 case R_PPC_ADDR14_BRNTAKEN
:
8359 if (h
!= NULL
&& !info
->shared
)
8364 if ((input_section
->flags
& SEC_ALLOC
) == 0
8370 && ((h
->root
.type
== bfd_link_hash_undefined
8371 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
8372 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
8373 || (h
->root
.type
== bfd_link_hash_undefweak
8374 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)))
8375 && (must_be_dyn_reloc (info
, r_type
)
8376 || !SYMBOL_CALLS_LOCAL (info
, h
)))
8377 || (ELIMINATE_COPY_RELOCS
8382 && !h
->def_regular
))
8388 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8389 "create relocation for %s\n",
8390 (h
&& h
->root
.root
.string
8391 ? h
->root
.root
.string
: "<unknown>"));
8394 /* When generating a shared object, these relocations
8395 are copied into the output file to be resolved at run
8397 sreloc
= elf_section_data (input_section
)->sreloc
;
8399 sreloc
= htab
->reliplt
;
8404 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8407 if (outrel
.r_offset
== (bfd_vma
) -1
8408 || outrel
.r_offset
== (bfd_vma
) -2)
8409 skip
= (int) outrel
.r_offset
;
8410 outrel
.r_offset
+= (input_section
->output_section
->vma
8411 + input_section
->output_offset
);
8414 memset (&outrel
, 0, sizeof outrel
);
8416 && (h
->root
.type
== bfd_link_hash_undefined
8417 || h
->root
.type
== bfd_link_hash_undefweak
))
8418 || !SYMBOL_REFERENCES_LOCAL (info
, h
))
8420 BFD_ASSERT (h
->dynindx
!= -1);
8421 unresolved_reloc
= FALSE
;
8422 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
8423 outrel
.r_addend
= rel
->r_addend
;
8427 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8429 if (r_type
!= R_PPC_ADDR32
)
8435 /* If we get here when building a static
8436 executable, then the libc startup function
8437 responsible for applying indirect function
8438 relocations is going to complain about
8440 If we get here when building a dynamic
8441 executable, it will be because we have
8442 a text relocation. The dynamic loader
8443 will set the text segment writable and
8444 non-executable to apply text relocations.
8445 So we'll segfault when trying to run the
8446 indirection function to resolve the reloc. */
8447 info
->callbacks
->einfo
8448 (_("%P: %H: relocation %s for indirect "
8449 "function %s unsupported\n"),
8450 input_bfd
, input_section
, rel
->r_offset
,
8455 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8457 else if (sec
== NULL
|| sec
->owner
== NULL
)
8459 bfd_set_error (bfd_error_bad_value
);
8466 /* We are turning this relocation into one
8467 against a section symbol. It would be
8468 proper to subtract the symbol's value,
8469 osec->vma, from the emitted reloc addend,
8470 but ld.so expects buggy relocs.
8471 FIXME: Why not always use a zero index? */
8472 osec
= sec
->output_section
;
8473 indx
= elf_section_data (osec
)->dynindx
;
8476 osec
= htab
->elf
.text_index_section
;
8477 indx
= elf_section_data (osec
)->dynindx
;
8479 BFD_ASSERT (indx
!= 0);
8482 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8483 indx
, osec
->name
, osec
->flags
,
8484 h
->root
.root
.string
);
8488 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8490 else if (ifunc
!= NULL
)
8491 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8493 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8496 loc
= sreloc
->contents
;
8497 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8498 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8503 /* This reloc will be computed at runtime. We clear the memory
8504 so that it contains predictable value. */
8506 && ((input_section
->flags
& SEC_ALLOC
) != 0
8507 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
8509 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
8516 case R_PPC_RELAX_PLT
:
8517 case R_PPC_RELAX_PLTREL24
:
8520 struct plt_entry
*ent
;
8521 bfd_vma got2_addend
= 0;
8523 if (r_type
== R_PPC_RELAX_PLTREL24
)
8526 got2_addend
= addend
;
8529 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
8530 if (htab
->plt_type
== PLT_NEW
)
8531 relocation
= (htab
->glink
->output_section
->vma
8532 + htab
->glink
->output_offset
8533 + ent
->glink_offset
);
8535 relocation
= (htab
->plt
->output_section
->vma
8536 + htab
->plt
->output_offset
8545 size_t insn_offset
= rel
->r_offset
;
8550 relocation
-= (input_section
->output_section
->vma
8551 + input_section
->output_offset
8552 + rel
->r_offset
- 4);
8553 stub
= shared_stub_entry
;
8554 bfd_put_32 (output_bfd
, stub
[0], contents
+ insn_offset
- 12);
8555 bfd_put_32 (output_bfd
, stub
[1], contents
+ insn_offset
- 8);
8556 bfd_put_32 (output_bfd
, stub
[2], contents
+ insn_offset
- 4);
8558 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
8563 size
= ARRAY_SIZE (stub_entry
);
8566 relocation
+= addend
;
8567 if (info
->relocatable
)
8570 /* First insn is HA, second is LO. */
8572 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
8573 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8577 insn
|= relocation
& 0xffff;
8578 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8586 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8590 /* Rewrite the reloc and convert one of the trailing nop
8591 relocs to describe this relocation. */
8592 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
8593 /* The relocs are at the bottom 2 bytes */
8594 rel
[0].r_offset
+= d_offset
;
8595 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8596 rel
[0].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
8597 rel
[1].r_offset
+= 4;
8598 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
8603 /* Indirect .sdata relocation. */
8604 case R_PPC_EMB_SDAI16
:
8605 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
8606 if (!is_static_defined (htab
->sdata
[0].sym
))
8608 unresolved_reloc
= TRUE
;
8612 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
8613 h
, relocation
, rel
);
8617 /* Indirect .sdata2 relocation. */
8618 case R_PPC_EMB_SDA2I16
:
8619 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
8620 if (!is_static_defined (htab
->sdata
[1].sym
))
8622 unresolved_reloc
= TRUE
;
8626 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
8627 h
, relocation
, rel
);
8631 /* Handle the TOC16 reloc. We want to use the offset within the .got
8632 section, not the actual VMA. This is appropriate when generating
8633 an embedded ELF object, for which the .got section acts like the
8634 AIX .toc section. */
8635 case R_PPC_TOC16
: /* phony GOT16 relocations */
8636 if (sec
== NULL
|| sec
->output_section
== NULL
)
8638 unresolved_reloc
= TRUE
;
8641 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
8643 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
8646 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
8649 case R_PPC_PLTREL24
:
8650 if (h
!= NULL
&& ifunc
== NULL
)
8652 struct plt_entry
*ent
= find_plt_ent (&h
->plt
.plist
, got2
,
8653 info
->shared
? addend
: 0);
8655 || htab
->plt
== NULL
)
8657 /* We didn't make a PLT entry for this symbol. This
8658 happens when statically linking PIC code, or when
8659 using -Bsymbolic. */
8663 /* Relocation is to the entry for this symbol in the
8664 procedure linkage table. */
8665 unresolved_reloc
= FALSE
;
8666 if (htab
->plt_type
== PLT_NEW
)
8667 relocation
= (htab
->glink
->output_section
->vma
8668 + htab
->glink
->output_offset
8669 + ent
->glink_offset
);
8671 relocation
= (htab
->plt
->output_section
->vma
8672 + htab
->plt
->output_offset
8677 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8678 addend specifies the GOT pointer offset within .got2.
8679 Don't apply it to the relocation field. */
8683 /* Relocate against _SDA_BASE_. */
8684 case R_PPC_SDAREL16
:
8687 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
8690 || sec
->output_section
== NULL
8691 || !is_static_defined (sda
))
8693 unresolved_reloc
= TRUE
;
8696 addend
-= SYM_VAL (sda
);
8698 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8699 if (! ((CONST_STRNEQ (name
, ".sdata")
8700 && (name
[6] == 0 || name
[6] == '.'))
8701 || (CONST_STRNEQ (name
, ".sbss")
8702 && (name
[5] == 0 || name
[5] == '.'))))
8704 info
->callbacks
->einfo
8705 (_("%P: %B: the target (%s) of a %s relocation is "
8706 "in the wrong output section (%s)\n"),
8715 /* Relocate against _SDA2_BASE_. */
8716 case R_PPC_EMB_SDA2REL
:
8719 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
8722 || sec
->output_section
== NULL
8723 || !is_static_defined (sda
))
8725 unresolved_reloc
= TRUE
;
8728 addend
-= SYM_VAL (sda
);
8730 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8731 if (! (CONST_STRNEQ (name
, ".sdata2")
8732 || CONST_STRNEQ (name
, ".sbss2")))
8734 info
->callbacks
->einfo
8735 (_("%P: %B: the target (%s) of a %s relocation is "
8736 "in the wrong output section (%s)\n"),
8745 case R_PPC_VLE_LO16A
:
8746 relocation
= relocation
+ addend
;
8747 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8748 relocation
, split16a_type
);
8751 case R_PPC_VLE_LO16D
:
8752 relocation
= relocation
+ addend
;
8753 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8754 relocation
, split16d_type
);
8757 case R_PPC_VLE_HI16A
:
8758 relocation
= (relocation
+ addend
) >> 16;
8759 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8760 relocation
, split16a_type
);
8763 case R_PPC_VLE_HI16D
:
8764 relocation
= (relocation
+ addend
) >> 16;
8765 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8766 relocation
, split16d_type
);
8769 case R_PPC_VLE_HA16A
:
8770 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
8771 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8772 relocation
, split16a_type
);
8775 case R_PPC_VLE_HA16D
:
8776 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
8777 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8778 relocation
, split16d_type
);
8781 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8782 case R_PPC_EMB_SDA21
:
8783 case R_PPC_VLE_SDA21
:
8784 case R_PPC_EMB_RELSDA
:
8785 case R_PPC_VLE_SDA21_LO
:
8790 struct elf_link_hash_entry
*sda
= NULL
;
8792 if (sec
== NULL
|| sec
->output_section
== NULL
)
8794 unresolved_reloc
= TRUE
;
8798 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8799 if (((CONST_STRNEQ (name
, ".sdata")
8800 && (name
[6] == 0 || name
[6] == '.'))
8801 || (CONST_STRNEQ (name
, ".sbss")
8802 && (name
[5] == 0 || name
[5] == '.'))))
8805 sda
= htab
->sdata
[0].sym
;
8807 else if (CONST_STRNEQ (name
, ".sdata2")
8808 || CONST_STRNEQ (name
, ".sbss2"))
8811 sda
= htab
->sdata
[1].sym
;
8813 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
8814 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
8820 info
->callbacks
->einfo
8821 (_("%P: %B: the target (%s) of a %s relocation is "
8822 "in the wrong output section (%s)\n"),
8828 bfd_set_error (bfd_error_bad_value
);
8835 if (!is_static_defined (sda
))
8837 unresolved_reloc
= TRUE
;
8840 addend
-= SYM_VAL (sda
);
8843 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
8845 && (r_type
== R_PPC_VLE_SDA21
8846 || r_type
== R_PPC_VLE_SDA21_LO
))
8848 relocation
= relocation
+ addend
;
8851 /* Force e_li insn, keeping RT from original insn. */
8855 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8856 /* Top 4 bits of value to 17..20. */
8857 insn
|= (relocation
& 0xf0000) >> 5;
8858 /* Next 5 bits of the value to 11..15. */
8859 insn
|= (relocation
& 0xf800) << 5;
8860 /* And the final 11 bits of the value to bits 21 to 31. */
8861 insn
|= relocation
& 0x7ff;
8863 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8865 if (r_type
== R_PPC_VLE_SDA21
8866 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
8870 else if (r_type
== R_PPC_EMB_SDA21
8871 || r_type
== R_PPC_VLE_SDA21
8872 || r_type
== R_PPC_VLE_SDA21_LO
)
8874 /* Fill in register field. */
8875 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
8877 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8881 case R_PPC_VLE_SDAREL_LO16A
:
8882 case R_PPC_VLE_SDAREL_LO16D
:
8883 case R_PPC_VLE_SDAREL_HI16A
:
8884 case R_PPC_VLE_SDAREL_HI16D
:
8885 case R_PPC_VLE_SDAREL_HA16A
:
8886 case R_PPC_VLE_SDAREL_HA16D
:
8891 struct elf_link_hash_entry
*sda
= NULL
;
8893 if (sec
== NULL
|| sec
->output_section
== NULL
)
8895 unresolved_reloc
= TRUE
;
8899 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8900 if (((CONST_STRNEQ (name
, ".sdata")
8901 && (name
[6] == 0 || name
[6] == '.'))
8902 || (CONST_STRNEQ (name
, ".sbss")
8903 && (name
[5] == 0 || name
[5] == '.'))))
8906 sda
= htab
->sdata
[0].sym
;
8908 else if (CONST_STRNEQ (name
, ".sdata2")
8909 || CONST_STRNEQ (name
, ".sbss2"))
8912 sda
= htab
->sdata
[1].sym
;
8916 (*_bfd_error_handler
)
8917 (_("%B: the target (%s) of a %s relocation is "
8918 "in the wrong output section (%s)"),
8924 bfd_set_error (bfd_error_bad_value
);
8931 if (!is_static_defined (sda
))
8933 unresolved_reloc
= TRUE
;
8938 value
= (sda
->root
.u
.def
.section
->output_section
->vma
8939 + sda
->root
.u
.def
.section
->output_offset
8942 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
8943 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8944 value
, split16a_type
);
8945 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
8946 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8947 value
, split16d_type
);
8948 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
8950 value
= value
>> 16;
8951 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8952 value
, split16a_type
);
8954 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
8956 value
= value
>> 16;
8957 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8958 value
, split16d_type
);
8960 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
8962 value
= (value
+ 0x8000) >> 16;
8963 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8964 value
, split16a_type
);
8966 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
8968 value
= (value
+ 0x8000) >> 16;
8969 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8970 value
, split16d_type
);
8975 /* Relocate against the beginning of the section. */
8977 case R_PPC_SECTOFF_LO
:
8978 case R_PPC_SECTOFF_HI
:
8979 case R_PPC_SECTOFF_HA
:
8980 if (sec
== NULL
|| sec
->output_section
== NULL
)
8982 unresolved_reloc
= TRUE
;
8985 addend
-= sec
->output_section
->vma
;
8988 /* Negative relocations. */
8989 case R_PPC_EMB_NADDR32
:
8990 case R_PPC_EMB_NADDR16
:
8991 case R_PPC_EMB_NADDR16_LO
:
8992 case R_PPC_EMB_NADDR16_HI
:
8993 case R_PPC_EMB_NADDR16_HA
:
8994 addend
-= 2 * relocation
;
8998 case R_PPC_GLOB_DAT
:
8999 case R_PPC_JMP_SLOT
:
9000 case R_PPC_RELATIVE
:
9001 case R_PPC_IRELATIVE
:
9003 case R_PPC_PLTREL32
:
9004 case R_PPC_PLT16_LO
:
9005 case R_PPC_PLT16_HI
:
9006 case R_PPC_PLT16_HA
:
9008 case R_PPC_EMB_RELSEC16
:
9009 case R_PPC_EMB_RELST_LO
:
9010 case R_PPC_EMB_RELST_HI
:
9011 case R_PPC_EMB_RELST_HA
:
9012 case R_PPC_EMB_BIT_FLD
:
9013 info
->callbacks
->einfo
9014 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9019 bfd_set_error (bfd_error_invalid_operation
);
9024 /* Do any further special processing. */
9030 case R_PPC_ADDR16_HA
:
9031 case R_PPC_REL16_HA
:
9032 case R_PPC_SECTOFF_HA
:
9033 case R_PPC_TPREL16_HA
:
9034 case R_PPC_DTPREL16_HA
:
9035 case R_PPC_EMB_NADDR16_HA
:
9036 case R_PPC_EMB_RELST_HA
:
9037 /* It's just possible that this symbol is a weak symbol
9038 that's not actually defined anywhere. In that case,
9039 'sec' would be NULL, and we should leave the symbol
9040 alone (it will be set to zero elsewhere in the link). */
9045 case R_PPC_PLT16_HA
:
9046 case R_PPC_GOT16_HA
:
9047 case R_PPC_GOT_TLSGD16_HA
:
9048 case R_PPC_GOT_TLSLD16_HA
:
9049 case R_PPC_GOT_TPREL16_HA
:
9050 case R_PPC_GOT_DTPREL16_HA
:
9051 /* Add 0x10000 if sign bit in 0:15 is set.
9052 Bits 0:15 are not used. */
9057 case R_PPC_ADDR16_LO
:
9059 case R_PPC_GOT16_LO
:
9060 case R_PPC_SDAREL16
:
9062 case R_PPC_SECTOFF_LO
:
9063 case R_PPC_DTPREL16
:
9064 case R_PPC_DTPREL16_LO
:
9066 case R_PPC_TPREL16_LO
:
9067 case R_PPC_GOT_TLSGD16
:
9068 case R_PPC_GOT_TLSGD16_LO
:
9069 case R_PPC_GOT_TLSLD16
:
9070 case R_PPC_GOT_TLSLD16_LO
:
9071 case R_PPC_GOT_DTPREL16
:
9072 case R_PPC_GOT_DTPREL16_LO
:
9073 case R_PPC_GOT_TPREL16
:
9074 case R_PPC_GOT_TPREL16_LO
:
9076 /* The 32-bit ABI lacks proper relocations to deal with
9077 certain 64-bit instructions. Prevent damage to bits
9078 that make up part of the insn opcode. */
9079 unsigned int insn
, mask
, lobit
;
9081 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
9083 if (is_insn_ds_form (insn
))
9085 else if (is_insn_dq_form (insn
))
9089 lobit
= mask
& (relocation
+ addend
);
9093 info
->callbacks
->einfo
9094 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9095 input_bfd
, input_section
, rel
->r_offset
,
9096 howto
->name
, sym_name
, mask
+ 1);
9097 bfd_set_error (bfd_error_bad_value
);
9100 addend
+= insn
& mask
;
9106 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9107 "offset = %ld, addend = %ld\n",
9112 (long) rel
->r_offset
,
9116 if (unresolved_reloc
9117 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9119 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9120 rel
->r_offset
) != (bfd_vma
) -1)
9122 info
->callbacks
->einfo
9123 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9124 input_bfd
, input_section
, rel
->r_offset
,
9130 /* 16-bit fields in insns mostly have signed values, but a
9131 few insns have 16-bit unsigned values. Really, we should
9132 have different reloc types. */
9133 if (howto
->complain_on_overflow
!= complain_overflow_dont
9134 && howto
->dst_mask
== 0xffff
9135 && (input_section
->flags
& SEC_CODE
) != 0)
9137 enum complain_overflow complain
= complain_overflow_signed
;
9139 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9143 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9144 if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9145 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9146 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */
9147 || (insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9148 complain
= complain_overflow_unsigned
;
9150 if (howto
->complain_on_overflow
!= complain
)
9153 alt_howto
.complain_on_overflow
= complain
;
9158 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9159 rel
->r_offset
, relocation
, addend
);
9161 if (r
!= bfd_reloc_ok
)
9163 if (r
== bfd_reloc_overflow
)
9169 && h
->root
.type
== bfd_link_hash_undefweak
9170 && howto
->pc_relative
)
9172 /* Assume this is a call protected by other code that
9173 detect the symbol is undefined. If this is the case,
9174 we can safely ignore the overflow. If not, the
9175 program is hosed anyway, and a little warning isn't
9181 if (! (*info
->callbacks
->reloc_overflow
) (info
,
9182 (h
? &h
->root
: NULL
),
9193 info
->callbacks
->einfo
9194 (_("%P: %H: %s reloc against `%s': error %d\n"),
9195 input_bfd
, input_section
, rel
->r_offset
,
9196 howto
->name
, sym_name
, (int) r
);
9203 fprintf (stderr
, "\n");
9206 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9207 && input_section
->size
!= input_section
->rawsize
9208 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9209 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9211 /* Branch around the trampolines. */
9212 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9213 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9216 if (htab
->params
->ppc476_workaround
9217 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9218 && (!info
->relocatable
9219 || (input_section
->output_section
->alignment_power
9220 >= htab
->params
->pagesize_p2
)))
9222 struct ppc_elf_relax_info
*relax_info
;
9223 bfd_vma start_addr
, end_addr
, addr
;
9224 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9226 relax_info
= elf_section_data (input_section
)->sec_info
;
9227 if (relax_info
->workaround_size
!= 0)
9228 memset (contents
+ input_section
->size
- relax_info
->workaround_size
,
9229 0, relax_info
->workaround_size
);
9231 /* The idea is: Replace the last instruction on a page with a
9232 branch to a patch area. Put the insn there followed by a
9233 branch back to the next page. Complicated a little by
9234 needing to handle moved conditional branches, and by not
9235 wanting to touch data-in-text. */
9237 start_addr
= (input_section
->output_section
->vma
9238 + input_section
->output_offset
);
9239 end_addr
= (start_addr
+ input_section
->size
9240 - relax_info
->workaround_size
);
9241 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9245 bfd_vma offset
= addr
- start_addr
;
9246 Elf_Internal_Rela
*lo
, *hi
;
9247 bfd_boolean is_data
;
9248 bfd_vma patch_off
, patch_addr
;
9251 /* Do we have a data reloc at this offset? If so, leave
9259 rel
= lo
+ (hi
- lo
) / 2;
9260 if (rel
->r_offset
< offset
)
9262 else if (rel
->r_offset
> offset
+ 3)
9266 switch (ELF32_R_TYPE (rel
->r_info
))
9283 /* Some instructions can be left alone too. Unconditional
9284 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9285 avoid the icache failure.
9287 The problem occurs due to prefetch across a page boundary
9288 where stale instructions can be fetched from the next
9289 page, and the mechanism for flushing these bad
9290 instructions fails under certain circumstances. The
9291 unconditional branches:
9292 1) Branch: b, bl, ba, bla,
9293 2) Branch Conditional: bc, bca, bcl, bcla,
9294 3) Branch Conditional to Link Register: bclr, bclrl,
9295 where (2) and (3) have BO=0x14 making them unconditional,
9296 prevent the bad prefetch because the prefetch itself is
9297 affected by these instructions. This happens even if the
9298 instruction is not executed.
9303 . addi 9,9,new_page@l
9310 The bctr is not predicted taken due to ctr not being
9311 ready, so prefetch continues on past the bctr into the
9312 new page which might have stale instructions. If they
9313 fail to be flushed, then they will be executed after the
9314 bctr executes. Either of the following modifications
9315 prevent the bad prefetch from happening in the first
9318 . lis 9,new_page@ha lis 9,new_page@ha
9319 . addi 9,9,new_page@l addi 9,9,new_page@l
9322 . nop b somewhere_else
9323 . b somewhere_else nop
9324 . new_page: new_page:
9326 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9327 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9328 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9329 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9330 || ((insn
& (0x3f << 26)) == (19u << 26)
9331 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9332 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9335 patch_addr
= (start_addr
+ input_section
->size
9336 - relax_info
->workaround_size
);
9337 patch_addr
= (patch_addr
+ 15) & -16;
9338 patch_off
= patch_addr
- start_addr
;
9339 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9342 && rel
->r_offset
>= offset
9343 && rel
->r_offset
< offset
+ 4)
9345 /* If the insn we are patching had a reloc, adjust the
9346 reloc r_offset so that the reloc applies to the moved
9347 location. This matters for -r and --emit-relocs. */
9348 if (rel
+ 1 != relend
)
9350 Elf_Internal_Rela tmp
= *rel
;
9352 /* Keep the relocs sorted by r_offset. */
9353 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9356 relend
[-1].r_offset
+= patch_off
- offset
;
9361 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9362 && (insn
& 2) == 0 /* relative */)
9364 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
9366 delta
+= offset
- patch_off
;
9367 if (info
->relocatable
&& rel
!= NULL
)
9369 if (!info
->relocatable
&& rel
!= NULL
)
9371 enum elf_ppc_reloc_type r_type
;
9373 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
9374 if (r_type
== R_PPC_REL14_BRTAKEN
)
9375 insn
|= BRANCH_PREDICT_BIT
;
9376 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
9377 insn
&= ~BRANCH_PREDICT_BIT
;
9379 BFD_ASSERT (r_type
== R_PPC_REL14
);
9381 if ((r_type
== R_PPC_REL14_BRTAKEN
9382 || r_type
== R_PPC_REL14_BRNTAKEN
)
9383 && delta
+ 0x8000 < 0x10000
9384 && (bfd_signed_vma
) delta
< 0)
9385 insn
^= BRANCH_PREDICT_BIT
;
9387 if (delta
+ 0x8000 < 0x10000)
9389 bfd_put_32 (input_bfd
,
9390 (insn
& ~0xfffc) | (delta
& 0xfffc),
9391 contents
+ patch_off
);
9393 bfd_put_32 (input_bfd
,
9394 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9395 contents
+ patch_off
);
9402 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
9404 relend
[-1].r_offset
+= 8;
9405 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
9407 bfd_put_32 (input_bfd
,
9408 (insn
& ~0xfffc) | 8,
9409 contents
+ patch_off
);
9411 bfd_put_32 (input_bfd
,
9412 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9413 contents
+ patch_off
);
9415 bfd_put_32 (input_bfd
,
9416 B
| ((delta
- 8) & 0x3fffffc),
9417 contents
+ patch_off
);
9423 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
9425 bfd_put_32 (input_bfd
,
9426 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9427 contents
+ patch_off
);
9430 BFD_ASSERT (patch_off
<= input_section
->size
);
9431 relax_info
->workaround_size
= input_section
->size
- patch_off
;
9438 /* Finish up dynamic symbol handling. We set the contents of various
9439 dynamic sections here. */
9442 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9443 struct bfd_link_info
*info
,
9444 struct elf_link_hash_entry
*h
,
9445 Elf_Internal_Sym
*sym
)
9447 struct ppc_elf_link_hash_table
*htab
;
9448 struct plt_entry
*ent
;
9449 bfd_boolean doneone
;
9452 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
9453 h
->root
.root
.string
);
9456 htab
= ppc_elf_hash_table (info
);
9457 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
9460 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9461 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9465 Elf_Internal_Rela rela
;
9467 bfd_vma reloc_index
;
9469 if (htab
->plt_type
== PLT_NEW
9470 || !htab
->elf
.dynamic_sections_created
9471 || h
->dynindx
== -1)
9472 reloc_index
= ent
->plt
.offset
/ 4;
9475 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
9476 / htab
->plt_slot_size
);
9477 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
9478 && htab
->plt_type
== PLT_OLD
)
9479 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
9482 /* This symbol has an entry in the procedure linkage table.
9484 if (htab
->plt_type
== PLT_VXWORKS
9485 && htab
->elf
.dynamic_sections_created
9486 && h
->dynindx
!= -1)
9489 const bfd_vma
*plt_entry
;
9491 /* The first three entries in .got.plt are reserved. */
9492 got_offset
= (reloc_index
+ 3) * 4;
9494 /* Use the right PLT. */
9495 plt_entry
= info
->shared
? ppc_elf_vxworks_pic_plt_entry
9496 : ppc_elf_vxworks_plt_entry
;
9498 /* Fill in the .plt on VxWorks. */
9501 bfd_put_32 (output_bfd
,
9502 plt_entry
[0] | PPC_HA (got_offset
),
9503 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
9504 bfd_put_32 (output_bfd
,
9505 plt_entry
[1] | PPC_LO (got_offset
),
9506 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
9510 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
9512 bfd_put_32 (output_bfd
,
9513 plt_entry
[0] | PPC_HA (got_loc
),
9514 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
9515 bfd_put_32 (output_bfd
,
9516 plt_entry
[1] | PPC_LO (got_loc
),
9517 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
9520 bfd_put_32 (output_bfd
, plt_entry
[2],
9521 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
9522 bfd_put_32 (output_bfd
, plt_entry
[3],
9523 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
9525 /* This instruction is an immediate load. The value loaded is
9526 the byte offset of the R_PPC_JMP_SLOT relocation from the
9527 start of the .rela.plt section. The value is stored in the
9528 low-order 16 bits of the load instruction. */
9529 /* NOTE: It appears that this is now an index rather than a
9530 prescaled offset. */
9531 bfd_put_32 (output_bfd
,
9532 plt_entry
[4] | reloc_index
,
9533 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
9534 /* This instruction is a PC-relative branch whose target is
9535 the start of the PLT section. The address of this branch
9536 instruction is 20 bytes beyond the start of this PLT entry.
9537 The address is encoded in bits 6-29, inclusive. The value
9538 stored is right-shifted by two bits, permitting a 26-bit
9540 bfd_put_32 (output_bfd
,
9542 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
9543 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
9544 bfd_put_32 (output_bfd
, plt_entry
[6],
9545 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
9546 bfd_put_32 (output_bfd
, plt_entry
[7],
9547 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
9549 /* Fill in the GOT entry corresponding to this PLT slot with
9550 the address immediately after the "bctr" instruction
9551 in this PLT entry. */
9552 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
9553 + htab
->plt
->output_offset
9554 + ent
->plt
.offset
+ 16),
9555 htab
->sgotplt
->contents
+ got_offset
);
9559 /* Fill in a couple of entries in .rela.plt.unloaded. */
9560 loc
= htab
->srelplt2
->contents
9561 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
9562 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
9563 * sizeof (Elf32_External_Rela
));
9565 /* Provide the @ha relocation for the first instruction. */
9566 rela
.r_offset
= (htab
->plt
->output_section
->vma
9567 + htab
->plt
->output_offset
9568 + ent
->plt
.offset
+ 2);
9569 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
9571 rela
.r_addend
= got_offset
;
9572 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9573 loc
+= sizeof (Elf32_External_Rela
);
9575 /* Provide the @l relocation for the second instruction. */
9576 rela
.r_offset
= (htab
->plt
->output_section
->vma
9577 + htab
->plt
->output_offset
9578 + ent
->plt
.offset
+ 6);
9579 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
9581 rela
.r_addend
= got_offset
;
9582 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9583 loc
+= sizeof (Elf32_External_Rela
);
9585 /* Provide a relocation for the GOT entry corresponding to this
9586 PLT slot. Point it at the middle of the .plt entry. */
9587 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
9588 + htab
->sgotplt
->output_offset
9590 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
9592 rela
.r_addend
= ent
->plt
.offset
+ 16;
9593 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9596 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9597 In particular, the offset for the relocation is not the
9598 address of the PLT entry for this function, as specified
9599 by the ABI. Instead, the offset is set to the address of
9600 the GOT slot for this function. See EABI 4.4.4.1. */
9601 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
9602 + htab
->sgotplt
->output_offset
9608 asection
*splt
= htab
->plt
;
9609 if (!htab
->elf
.dynamic_sections_created
9610 || h
->dynindx
== -1)
9613 rela
.r_offset
= (splt
->output_section
->vma
9614 + splt
->output_offset
9616 if (htab
->plt_type
== PLT_OLD
9617 || !htab
->elf
.dynamic_sections_created
9618 || h
->dynindx
== -1)
9620 /* We don't need to fill in the .plt. The ppc dynamic
9621 linker will fill it in. */
9625 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
9626 + htab
->glink
->output_section
->vma
9627 + htab
->glink
->output_offset
);
9628 bfd_put_32 (output_bfd
, val
,
9629 splt
->contents
+ ent
->plt
.offset
);
9633 /* Fill in the entry in the .rela.plt section. */
9635 if (!htab
->elf
.dynamic_sections_created
9636 || h
->dynindx
== -1)
9638 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
9640 && (h
->root
.type
== bfd_link_hash_defined
9641 || h
->root
.type
== bfd_link_hash_defweak
));
9642 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
9643 rela
.r_addend
= SYM_VAL (h
);
9646 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
9648 if (!htab
->elf
.dynamic_sections_created
9649 || h
->dynindx
== -1)
9650 loc
= (htab
->reliplt
->contents
9651 + (htab
->reliplt
->reloc_count
++
9652 * sizeof (Elf32_External_Rela
)));
9654 loc
= (htab
->relplt
->contents
9655 + reloc_index
* sizeof (Elf32_External_Rela
));
9656 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9658 if (!h
->def_regular
)
9660 /* Mark the symbol as undefined, rather than as
9661 defined in the .plt section. Leave the value if
9662 there were any relocations where pointer equality
9663 matters (this is a clue for the dynamic linker, to
9664 make function pointer comparisons work between an
9665 application and shared library), otherwise set it
9667 sym
->st_shndx
= SHN_UNDEF
;
9668 if (!h
->pointer_equality_needed
)
9670 else if (!h
->ref_regular_nonweak
)
9672 /* This breaks function pointer comparisons, but
9673 that is better than breaking tests for a NULL
9674 function pointer. */
9678 else if (h
->type
== STT_GNU_IFUNC
9681 /* Set the value of ifunc symbols in a non-pie
9682 executable to the glink entry. This is to avoid
9683 text relocations. We can't do this for ifunc in
9684 allocate_dynrelocs, as we do for normal dynamic
9685 function symbols with plt entries, because we need
9686 to keep the original value around for the ifunc
9688 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
9689 (output_bfd
, htab
->glink
->output_section
));
9690 sym
->st_value
= (ent
->glink_offset
9691 + htab
->glink
->output_offset
9692 + htab
->glink
->output_section
->vma
);
9697 if (htab
->plt_type
== PLT_NEW
9698 || !htab
->elf
.dynamic_sections_created
9699 || h
->dynindx
== -1)
9702 asection
*splt
= htab
->plt
;
9703 if (!htab
->elf
.dynamic_sections_created
9704 || h
->dynindx
== -1)
9707 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
9709 if (h
== htab
->tls_get_addr
&& !htab
->params
->no_tls_get_addr_opt
)
9711 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
9713 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
9715 bfd_put_32 (output_bfd
, MR_0_3
, p
);
9717 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
9719 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
9721 bfd_put_32 (output_bfd
, BEQLR
, p
);
9723 bfd_put_32 (output_bfd
, MR_3_0
, p
);
9725 bfd_put_32 (output_bfd
, NOP
, p
);
9729 write_glink_stub (ent
, splt
, p
, info
);
9732 /* We only need one non-PIC glink stub. */
9742 Elf_Internal_Rela rela
;
9745 /* This symbols needs a copy reloc. Set it up. */
9748 fprintf (stderr
, ", copy");
9751 BFD_ASSERT (h
->dynindx
!= -1);
9753 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
9757 BFD_ASSERT (s
!= NULL
);
9759 rela
.r_offset
= SYM_VAL (h
);
9760 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
9762 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
9763 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9767 fprintf (stderr
, "\n");
9773 static enum elf_reloc_type_class
9774 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
9775 const asection
*rel_sec
,
9776 const Elf_Internal_Rela
*rela
)
9778 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
9780 if (rel_sec
== htab
->reliplt
)
9781 return reloc_class_ifunc
;
9783 switch (ELF32_R_TYPE (rela
->r_info
))
9785 case R_PPC_RELATIVE
:
9786 return reloc_class_relative
;
9787 case R_PPC_JMP_SLOT
:
9788 return reloc_class_plt
;
9790 return reloc_class_copy
;
9792 return reloc_class_normal
;
9796 /* Finish up the dynamic sections. */
9799 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
9800 struct bfd_link_info
*info
)
9804 struct ppc_elf_link_hash_table
*htab
;
9807 bfd_boolean ret
= TRUE
;
9810 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
9813 htab
= ppc_elf_hash_table (info
);
9814 dynobj
= elf_hash_table (info
)->dynobj
;
9815 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
9816 if (htab
->is_vxworks
)
9817 splt
= bfd_get_linker_section (dynobj
, ".plt");
9822 if (htab
->elf
.hgot
!= NULL
)
9823 got
= SYM_VAL (htab
->elf
.hgot
);
9825 if (htab
->elf
.dynamic_sections_created
)
9827 Elf32_External_Dyn
*dyncon
, *dynconend
;
9829 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
9831 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
9832 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9833 for (; dyncon
< dynconend
; dyncon
++)
9835 Elf_Internal_Dyn dyn
;
9838 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9843 if (htab
->is_vxworks
)
9847 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9851 dyn
.d_un
.d_val
= htab
->relplt
->size
;
9856 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9860 dyn
.d_un
.d_ptr
= got
;
9864 if (htab
->is_vxworks
)
9867 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
9873 if (htab
->is_vxworks
9874 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
9879 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9883 if (htab
->got
!= NULL
)
9885 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->got
9886 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->sgotplt
)
9888 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
9890 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
9891 if (htab
->plt_type
== PLT_OLD
)
9893 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9894 so that a function can easily find the address of
9895 _GLOBAL_OFFSET_TABLE_. */
9896 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
9897 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
9898 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
9903 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
9904 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
9905 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
9906 bfd_put_32 (output_bfd
, val
, p
);
9911 info
->callbacks
->einfo (_("%P: %s not defined in linker created %s\n"),
9912 htab
->elf
.hgot
->root
.root
.string
,
9913 (htab
->sgotplt
!= NULL
9914 ? htab
->sgotplt
->name
: htab
->got
->name
));
9915 bfd_set_error (bfd_error_bad_value
);
9919 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
9922 /* Fill in the first entry in the VxWorks procedure linkage table. */
9923 if (splt
&& splt
->size
> 0)
9925 /* Use the right PLT. */
9926 const bfd_vma
*plt_entry
= (info
->shared
9927 ? ppc_elf_vxworks_pic_plt0_entry
9928 : ppc_elf_vxworks_plt0_entry
);
9932 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
9934 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
9935 splt
->contents
+ 0);
9936 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
9937 splt
->contents
+ 4);
9941 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
9942 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
9944 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
9945 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
9946 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
9947 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
9948 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
9949 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
9953 Elf_Internal_Rela rela
;
9956 loc
= htab
->srelplt2
->contents
;
9958 /* Output the @ha relocation for the first instruction. */
9959 rela
.r_offset
= (htab
->plt
->output_section
->vma
9960 + htab
->plt
->output_offset
9962 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
9964 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9965 loc
+= sizeof (Elf32_External_Rela
);
9967 /* Output the @l relocation for the second instruction. */
9968 rela
.r_offset
= (htab
->plt
->output_section
->vma
9969 + htab
->plt
->output_offset
9971 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
9973 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9974 loc
+= sizeof (Elf32_External_Rela
);
9976 /* Fix up the remaining relocations. They may have the wrong
9977 symbol index for _G_O_T_ or _P_L_T_ depending on the order
9978 in which symbols were output. */
9979 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
9981 Elf_Internal_Rela rel
;
9983 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
9984 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
9985 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
9986 loc
+= sizeof (Elf32_External_Rela
);
9988 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
9989 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
9990 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
9991 loc
+= sizeof (Elf32_External_Rela
);
9993 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
9994 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
9995 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
9996 loc
+= sizeof (Elf32_External_Rela
);
10001 if (htab
->glink
!= NULL
10002 && htab
->glink
->contents
!= NULL
10003 && htab
->elf
.dynamic_sections_created
)
10006 unsigned char *endp
;
10011 * PIC glink code is the following:
10013 * # ith PLT code stub.
10014 * addis 11,30,(plt+(i-1)*4-got)@ha
10015 * lwz 11,(plt+(i-1)*4-got)@l(11)
10019 * # A table of branches, one for each plt entry.
10020 * # The idea is that the plt call stub loads ctr and r11 with these
10021 * # addresses, so (r11 - res_0) gives the plt index * 4.
10022 * res_0: b PLTresolve
10023 * res_1: b PLTresolve
10025 * # Some number of entries towards the end can be nops
10031 * addis 11,11,(1f-res_0)@ha
10034 * 1: addi 11,11,(1b-res_0)@l
10037 * sub 11,11,12 # r11 = index * 4
10038 * addis 12,12,(got+4-1b)@ha
10039 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10040 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10043 * add 11,0,11 # r11 = index * 12 = reloc offset.
10046 static const unsigned int pic_plt_resolve
[] =
10067 * Non-PIC glink code is a little simpler.
10069 * # ith PLT code stub.
10070 * lis 11,(plt+(i-1)*4)@ha
10071 * lwz 11,(plt+(i-1)*4)@l(11)
10075 * The branch table is the same, then comes
10078 * lis 12,(got+4)@ha
10079 * addis 11,11,(-res_0)@ha
10080 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10081 * addi 11,11,(-res_0)@l # r11 = index * 4
10084 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10085 * add 11,0,11 # r11 = index * 12 = reloc offset.
10088 static const unsigned int plt_resolve
[] =
10108 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10110 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10113 /* Build the branch table, one for each plt entry (less one),
10114 and perhaps some padding. */
10115 p
= htab
->glink
->contents
;
10116 p
+= htab
->glink_pltresolve
;
10117 endp
= htab
->glink
->contents
;
10118 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10119 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10121 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10126 bfd_put_32 (output_bfd
, NOP
, p
);
10130 res0
= (htab
->glink_pltresolve
10131 + htab
->glink
->output_section
->vma
10132 + htab
->glink
->output_offset
);
10134 if (htab
->params
->ppc476_workaround
)
10136 /* Ensure that a call stub at the end of a page doesn't
10137 result in prefetch over the end of the page into the
10138 glink branch table. */
10139 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10141 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10142 + htab
->glink
->output_offset
);
10144 for (page_addr
= res0
& -pagesize
;
10145 page_addr
> glink_start
;
10146 page_addr
-= pagesize
)
10148 /* We have a plt call stub that may need fixing. */
10152 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10153 insn
= bfd_get_32 (output_bfd
, loc
);
10156 /* By alignment, we know that there must be at least
10157 one other call stub before this one. */
10158 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10160 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10162 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10167 /* Last comes the PLTresolve stub. */
10172 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
10174 unsigned int insn
= pic_plt_resolve
[i
];
10176 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10178 bfd_put_32 (output_bfd
, insn
, p
);
10181 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
10183 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10184 + htab
->glink
->output_section
->vma
10185 + htab
->glink
->output_offset
);
10187 bfd_put_32 (output_bfd
,
10188 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
10189 bfd_put_32 (output_bfd
,
10190 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
10191 bfd_put_32 (output_bfd
,
10192 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
10193 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10195 bfd_put_32 (output_bfd
,
10196 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10197 bfd_put_32 (output_bfd
,
10198 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
10202 bfd_put_32 (output_bfd
,
10203 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10204 bfd_put_32 (output_bfd
,
10205 LWZ_12_12
+ 4, p
+ 9*4);
10210 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
10212 unsigned int insn
= plt_resolve
[i
];
10214 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10216 bfd_put_32 (output_bfd
, insn
, p
);
10219 p
-= 4 * ARRAY_SIZE (plt_resolve
);
10221 bfd_put_32 (output_bfd
,
10222 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
10223 bfd_put_32 (output_bfd
,
10224 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
10225 bfd_put_32 (output_bfd
,
10226 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
10227 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10229 bfd_put_32 (output_bfd
,
10230 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10231 bfd_put_32 (output_bfd
,
10232 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
10236 bfd_put_32 (output_bfd
,
10237 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10238 bfd_put_32 (output_bfd
,
10239 LWZ_12_12
+ 4, p
+ 6*4);
10244 if (htab
->glink_eh_frame
!= NULL
10245 && htab
->glink_eh_frame
->contents
!= NULL
)
10247 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10250 p
+= sizeof (glink_eh_frame_cie
);
10255 /* Offset to .glink. */
10256 val
= (htab
->glink
->output_section
->vma
10257 + htab
->glink
->output_offset
);
10258 val
-= (htab
->glink_eh_frame
->output_section
->vma
10259 + htab
->glink_eh_frame
->output_offset
);
10260 val
-= p
- htab
->glink_eh_frame
->contents
;
10261 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10263 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10264 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10265 htab
->glink_eh_frame
,
10266 htab
->glink_eh_frame
->contents
))
10273 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
10274 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10275 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
10276 #define TARGET_BIG_NAME "elf32-powerpc"
10277 #define ELF_ARCH bfd_arch_powerpc
10278 #define ELF_TARGET_ID PPC32_ELF_DATA
10279 #define ELF_MACHINE_CODE EM_PPC
10280 #ifdef __QNXTARGET__
10281 #define ELF_MAXPAGESIZE 0x1000
10283 #define ELF_MAXPAGESIZE 0x10000
10285 #define ELF_MINPAGESIZE 0x1000
10286 #define ELF_COMMONPAGESIZE 0x1000
10287 #define elf_info_to_howto ppc_elf_info_to_howto
10289 #ifdef EM_CYGNUS_POWERPC
10290 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10294 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10297 #define elf_backend_plt_not_loaded 1
10298 #define elf_backend_can_gc_sections 1
10299 #define elf_backend_can_refcount 1
10300 #define elf_backend_rela_normal 1
10301 #define elf_backend_caches_rawsize 1
10303 #define bfd_elf32_mkobject ppc_elf_mkobject
10304 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10305 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10306 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10307 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10308 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10309 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10310 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10312 #define elf_backend_object_p ppc_elf_object_p
10313 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10314 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10315 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10316 #define elf_backend_relocate_section ppc_elf_relocate_section
10317 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10318 #define elf_backend_check_relocs ppc_elf_check_relocs
10319 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10320 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10321 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10322 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10323 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10324 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10325 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10326 #define elf_backend_fake_sections ppc_elf_fake_sections
10327 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10328 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10329 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10330 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10331 #define elf_backend_write_core_note ppc_elf_write_core_note
10332 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10333 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10334 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10335 #define elf_backend_write_section ppc_elf_write_section
10336 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10337 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10338 #define elf_backend_action_discarded ppc_elf_action_discarded
10339 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10340 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10341 #define elf_backend_section_processing ppc_elf_section_processing
10343 #include "elf32-target.h"
10345 /* FreeBSD Target */
10347 #undef TARGET_LITTLE_SYM
10348 #undef TARGET_LITTLE_NAME
10350 #undef TARGET_BIG_SYM
10351 #define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
10352 #undef TARGET_BIG_NAME
10353 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10356 #define ELF_OSABI ELFOSABI_FREEBSD
10359 #define elf32_bed elf32_powerpc_fbsd_bed
10361 #include "elf32-target.h"
10363 /* VxWorks Target */
10365 #undef TARGET_LITTLE_SYM
10366 #undef TARGET_LITTLE_NAME
10368 #undef TARGET_BIG_SYM
10369 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
10370 #undef TARGET_BIG_NAME
10371 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10375 /* VxWorks uses the elf default section flags for .plt. */
10376 static const struct bfd_elf_special_section
*
10377 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
10379 if (sec
->name
== NULL
)
10382 if (strcmp (sec
->name
, ".plt") == 0)
10383 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
10385 return ppc_elf_get_sec_type_attr (abfd
, sec
);
10388 /* Like ppc_elf_link_hash_table_create, but overrides
10389 appropriately for VxWorks. */
10390 static struct bfd_link_hash_table
*
10391 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
10393 struct bfd_link_hash_table
*ret
;
10395 ret
= ppc_elf_link_hash_table_create (abfd
);
10398 struct ppc_elf_link_hash_table
*htab
10399 = (struct ppc_elf_link_hash_table
*)ret
;
10400 htab
->is_vxworks
= 1;
10401 htab
->plt_type
= PLT_VXWORKS
;
10402 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
10403 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
10404 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
10409 /* Tweak magic VxWorks symbols as they are loaded. */
10411 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
10412 struct bfd_link_info
*info
,
10413 Elf_Internal_Sym
*sym
,
10414 const char **namep ATTRIBUTE_UNUSED
,
10415 flagword
*flagsp ATTRIBUTE_UNUSED
,
10419 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
10423 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
10427 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10429 ppc_elf_final_write_processing(abfd
, linker
);
10430 elf_vxworks_final_write_processing(abfd
, linker
);
10433 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10435 #undef elf_backend_want_plt_sym
10436 #define elf_backend_want_plt_sym 1
10437 #undef elf_backend_want_got_plt
10438 #define elf_backend_want_got_plt 1
10439 #undef elf_backend_got_symbol_offset
10440 #define elf_backend_got_symbol_offset 0
10441 #undef elf_backend_plt_not_loaded
10442 #define elf_backend_plt_not_loaded 0
10443 #undef elf_backend_plt_readonly
10444 #define elf_backend_plt_readonly 1
10445 #undef elf_backend_got_header_size
10446 #define elf_backend_got_header_size 12
10448 #undef bfd_elf32_get_synthetic_symtab
10450 #undef bfd_elf32_bfd_link_hash_table_create
10451 #define bfd_elf32_bfd_link_hash_table_create \
10452 ppc_elf_vxworks_link_hash_table_create
10453 #undef elf_backend_add_symbol_hook
10454 #define elf_backend_add_symbol_hook \
10455 ppc_elf_vxworks_add_symbol_hook
10456 #undef elf_backend_link_output_symbol_hook
10457 #define elf_backend_link_output_symbol_hook \
10458 elf_vxworks_link_output_symbol_hook
10459 #undef elf_backend_final_write_processing
10460 #define elf_backend_final_write_processing \
10461 ppc_elf_vxworks_final_write_processing
10462 #undef elf_backend_get_sec_type_attr
10463 #define elf_backend_get_sec_type_attr \
10464 ppc_elf_vxworks_get_sec_type_attr
10465 #undef elf_backend_emit_relocs
10466 #define elf_backend_emit_relocs \
10467 elf_vxworks_emit_relocs
10470 #define elf32_bed ppc_elf_vxworks_bed
10471 #undef elf_backend_post_process_headers
10473 #include "elf32-target.h"