1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2018 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
38 #include "opcode/ppc.h"
40 typedef enum split16_format_type
47 /* RELA relocations are used here. */
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
61 /* The name of the dynamic interpreter. This is put in the .interp
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE(htab, h) \
72 (((!htab->params->speculate_indirect_jumps ? 6*4 : 4*4) \
74 && h == htab->tls_get_addr \
75 && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \
76 + (1u << htab->params->plt_stub_align) - 1) \
77 & -(1u << htab->params->plt_stub_align))
79 /* VxWorks uses its own plt layout, filled in by the static linker. */
81 /* The standard VxWorks PLT entry. */
82 #define VXWORKS_PLT_ENTRY_SIZE 32
83 static const bfd_vma ppc_elf_vxworks_plt_entry
84 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
86 0x3d800000, /* lis r12,0 */
87 0x818c0000, /* lwz r12,0(r12) */
88 0x7d8903a6, /* mtctr r12 */
89 0x4e800420, /* bctr */
90 0x39600000, /* li r11,0 */
91 0x48000000, /* b 14 <.PLT0resolve+0x4> */
95 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
96 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
98 0x3d9e0000, /* addis r12,r30,0 */
99 0x818c0000, /* lwz r12,0(r12) */
100 0x7d8903a6, /* mtctr r12 */
101 0x4e800420, /* bctr */
102 0x39600000, /* li r11,0 */
103 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
104 0x60000000, /* nop */
105 0x60000000, /* nop */
108 /* The initial VxWorks PLT entry. */
109 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
110 static const bfd_vma ppc_elf_vxworks_plt0_entry
111 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
113 0x3d800000, /* lis r12,0 */
114 0x398c0000, /* addi r12,r12,0 */
115 0x800c0008, /* lwz r0,8(r12) */
116 0x7c0903a6, /* mtctr r0 */
117 0x818c0004, /* lwz r12,4(r12) */
118 0x4e800420, /* bctr */
119 0x60000000, /* nop */
120 0x60000000, /* nop */
122 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
123 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
125 0x819e0008, /* lwz r12,8(r30) */
126 0x7d8903a6, /* mtctr r12 */
127 0x819e0004, /* lwz r12,4(r30) */
128 0x4e800420, /* bctr */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 0x60000000, /* nop */
132 0x60000000, /* nop */
135 /* For executables, we have some additional relocations in
136 .rela.plt.unloaded, for the kernel loader. */
138 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
139 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
140 /* The number of relocations in the PLTResolve slot. */
141 #define VXWORKS_PLTRESOLVE_RELOCS 2
142 /* The number of relocations in the PLTResolve slot when creating
144 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
146 /* Some instructions. */
147 #define ADDIS_11_11 0x3d6b0000
148 #define ADDIS_11_30 0x3d7e0000
149 #define ADDIS_12_12 0x3d8c0000
150 #define ADDI_11_11 0x396b0000
151 #define ADD_0_11_11 0x7c0b5a14
152 #define ADD_3_12_2 0x7c6c1214
153 #define ADD_11_0_11 0x7d605a14
155 #define BA 0x48000002
156 #define BCL_20_31 0x429f0005
157 #define BCTR 0x4e800420
158 #define CRSETEQ 0x4c421242
159 #define BEQCTRM 0x4dc20420
160 #define BEQLR 0x4d820020
161 #define CMPWI_11_0 0x2c0b0000
162 #define LIS_11 0x3d600000
163 #define LIS_12 0x3d800000
164 #define LWZU_0_12 0x840c0000
165 #define LWZ_0_12 0x800c0000
166 #define LWZ_11_3 0x81630000
167 #define LWZ_11_11 0x816b0000
168 #define LWZ_11_30 0x817e0000
169 #define LWZ_12_3 0x81830000
170 #define LWZ_12_12 0x818c0000
171 #define MR_0_3 0x7c601b78
172 #define MR_3_0 0x7c030378
173 #define MFLR_0 0x7c0802a6
174 #define MFLR_12 0x7d8802a6
175 #define MTCTR_0 0x7c0903a6
176 #define MTCTR_11 0x7d6903a6
177 #define MTLR_0 0x7c0803a6
178 #define NOP 0x60000000
179 #define SUB_11_11_12 0x7d6c5850
181 /* Offset of tp and dtp pointers from start of TLS block. */
182 #define TP_OFFSET 0x7000
183 #define DTP_OFFSET 0x8000
185 /* The value of a defined global symbol. */
186 #define SYM_VAL(SYM) \
187 ((SYM)->root.u.def.section->output_section->vma \
188 + (SYM)->root.u.def.section->output_offset \
189 + (SYM)->root.u.def.value)
191 static reloc_howto_type
*ppc_elf_howto_table
[R_PPC_max
];
193 static reloc_howto_type ppc_elf_howto_raw
[] = {
194 /* This reloc does nothing. */
195 HOWTO (R_PPC_NONE
, /* type */
197 3, /* size (0 = byte, 1 = short, 2 = long) */
199 FALSE
, /* pc_relative */
201 complain_overflow_dont
, /* complain_on_overflow */
202 bfd_elf_generic_reloc
, /* special_function */
203 "R_PPC_NONE", /* name */
204 FALSE
, /* partial_inplace */
207 FALSE
), /* pcrel_offset */
209 /* A standard 32 bit relocation. */
210 HOWTO (R_PPC_ADDR32
, /* type */
212 2, /* size (0 = byte, 1 = short, 2 = long) */
214 FALSE
, /* pc_relative */
216 complain_overflow_dont
, /* complain_on_overflow */
217 bfd_elf_generic_reloc
, /* special_function */
218 "R_PPC_ADDR32", /* name */
219 FALSE
, /* partial_inplace */
221 0xffffffff, /* dst_mask */
222 FALSE
), /* pcrel_offset */
224 /* An absolute 26 bit branch; the lower two bits must be zero.
225 FIXME: we don't check that, we just clear them. */
226 HOWTO (R_PPC_ADDR24
, /* type */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
230 FALSE
, /* pc_relative */
232 complain_overflow_signed
, /* complain_on_overflow */
233 bfd_elf_generic_reloc
, /* special_function */
234 "R_PPC_ADDR24", /* name */
235 FALSE
, /* partial_inplace */
237 0x3fffffc, /* dst_mask */
238 FALSE
), /* pcrel_offset */
240 /* A standard 16 bit relocation. */
241 HOWTO (R_PPC_ADDR16
, /* type */
243 1, /* size (0 = byte, 1 = short, 2 = long) */
245 FALSE
, /* pc_relative */
247 complain_overflow_bitfield
, /* complain_on_overflow */
248 bfd_elf_generic_reloc
, /* special_function */
249 "R_PPC_ADDR16", /* name */
250 FALSE
, /* partial_inplace */
252 0xffff, /* dst_mask */
253 FALSE
), /* pcrel_offset */
255 /* A 16 bit relocation without overflow. */
256 HOWTO (R_PPC_ADDR16_LO
, /* type */
258 1, /* size (0 = byte, 1 = short, 2 = long) */
260 FALSE
, /* pc_relative */
262 complain_overflow_dont
,/* complain_on_overflow */
263 bfd_elf_generic_reloc
, /* special_function */
264 "R_PPC_ADDR16_LO", /* name */
265 FALSE
, /* partial_inplace */
267 0xffff, /* dst_mask */
268 FALSE
), /* pcrel_offset */
270 /* The high order 16 bits of an address. */
271 HOWTO (R_PPC_ADDR16_HI
, /* type */
273 1, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE
, /* pc_relative */
277 complain_overflow_dont
, /* complain_on_overflow */
278 bfd_elf_generic_reloc
, /* special_function */
279 "R_PPC_ADDR16_HI", /* name */
280 FALSE
, /* partial_inplace */
282 0xffff, /* dst_mask */
283 FALSE
), /* pcrel_offset */
285 /* The high order 16 bits of an address, plus 1 if the contents of
286 the low 16 bits, treated as a signed number, is negative. */
287 HOWTO (R_PPC_ADDR16_HA
, /* type */
289 1, /* size (0 = byte, 1 = short, 2 = long) */
291 FALSE
, /* pc_relative */
293 complain_overflow_dont
, /* complain_on_overflow */
294 ppc_elf_addr16_ha_reloc
, /* special_function */
295 "R_PPC_ADDR16_HA", /* name */
296 FALSE
, /* partial_inplace */
298 0xffff, /* dst_mask */
299 FALSE
), /* pcrel_offset */
301 /* An absolute 16 bit branch; the lower two bits must be zero.
302 FIXME: we don't check that, we just clear them. */
303 HOWTO (R_PPC_ADDR14
, /* type */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
307 FALSE
, /* pc_relative */
309 complain_overflow_signed
, /* complain_on_overflow */
310 bfd_elf_generic_reloc
, /* special_function */
311 "R_PPC_ADDR14", /* name */
312 FALSE
, /* partial_inplace */
314 0xfffc, /* dst_mask */
315 FALSE
), /* pcrel_offset */
317 /* An absolute 16 bit branch, for which bit 10 should be set to
318 indicate that the branch is expected to be taken. The lower two
319 bits must be zero. */
320 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE
, /* pc_relative */
326 complain_overflow_signed
, /* complain_on_overflow */
327 bfd_elf_generic_reloc
, /* special_function */
328 "R_PPC_ADDR14_BRTAKEN",/* name */
329 FALSE
, /* partial_inplace */
331 0xfffc, /* dst_mask */
332 FALSE
), /* pcrel_offset */
334 /* An absolute 16 bit branch, for which bit 10 should be set to
335 indicate that the branch is not expected to be taken. The lower
336 two bits must be zero. */
337 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
341 FALSE
, /* pc_relative */
343 complain_overflow_signed
, /* complain_on_overflow */
344 bfd_elf_generic_reloc
, /* special_function */
345 "R_PPC_ADDR14_BRNTAKEN",/* name */
346 FALSE
, /* partial_inplace */
348 0xfffc, /* dst_mask */
349 FALSE
), /* pcrel_offset */
351 /* A relative 26 bit branch; the lower two bits must be zero. */
352 HOWTO (R_PPC_REL24
, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 TRUE
, /* pc_relative */
358 complain_overflow_signed
, /* complain_on_overflow */
359 bfd_elf_generic_reloc
, /* special_function */
360 "R_PPC_REL24", /* name */
361 FALSE
, /* partial_inplace */
363 0x3fffffc, /* dst_mask */
364 TRUE
), /* pcrel_offset */
366 /* A relative 16 bit branch; the lower two bits must be zero. */
367 HOWTO (R_PPC_REL14
, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 TRUE
, /* pc_relative */
373 complain_overflow_signed
, /* complain_on_overflow */
374 bfd_elf_generic_reloc
, /* special_function */
375 "R_PPC_REL14", /* name */
376 FALSE
, /* partial_inplace */
378 0xfffc, /* dst_mask */
379 TRUE
), /* pcrel_offset */
381 /* A relative 16 bit branch. Bit 10 should be set to indicate that
382 the branch is expected to be taken. The lower two bits must be
384 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 TRUE
, /* pc_relative */
390 complain_overflow_signed
, /* complain_on_overflow */
391 bfd_elf_generic_reloc
, /* special_function */
392 "R_PPC_REL14_BRTAKEN", /* name */
393 FALSE
, /* partial_inplace */
395 0xfffc, /* dst_mask */
396 TRUE
), /* pcrel_offset */
398 /* A relative 16 bit branch. Bit 10 should be set to indicate that
399 the branch is not expected to be taken. The lower two bits must
401 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 TRUE
, /* pc_relative */
407 complain_overflow_signed
, /* complain_on_overflow */
408 bfd_elf_generic_reloc
, /* special_function */
409 "R_PPC_REL14_BRNTAKEN",/* name */
410 FALSE
, /* partial_inplace */
412 0xfffc, /* dst_mask */
413 TRUE
), /* pcrel_offset */
415 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
417 HOWTO (R_PPC_GOT16
, /* type */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
421 FALSE
, /* pc_relative */
423 complain_overflow_signed
, /* complain_on_overflow */
424 ppc_elf_unhandled_reloc
, /* special_function */
425 "R_PPC_GOT16", /* name */
426 FALSE
, /* partial_inplace */
428 0xffff, /* dst_mask */
429 FALSE
), /* pcrel_offset */
431 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
433 HOWTO (R_PPC_GOT16_LO
, /* type */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
437 FALSE
, /* pc_relative */
439 complain_overflow_dont
, /* complain_on_overflow */
440 ppc_elf_unhandled_reloc
, /* special_function */
441 "R_PPC_GOT16_LO", /* name */
442 FALSE
, /* partial_inplace */
444 0xffff, /* dst_mask */
445 FALSE
), /* pcrel_offset */
447 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
449 HOWTO (R_PPC_GOT16_HI
, /* type */
451 1, /* size (0 = byte, 1 = short, 2 = long) */
453 FALSE
, /* pc_relative */
455 complain_overflow_dont
, /* complain_on_overflow */
456 ppc_elf_unhandled_reloc
, /* special_function */
457 "R_PPC_GOT16_HI", /* name */
458 FALSE
, /* partial_inplace */
460 0xffff, /* dst_mask */
461 FALSE
), /* pcrel_offset */
463 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
465 HOWTO (R_PPC_GOT16_HA
, /* type */
467 1, /* size (0 = byte, 1 = short, 2 = long) */
469 FALSE
, /* pc_relative */
471 complain_overflow_dont
, /* complain_on_overflow */
472 ppc_elf_unhandled_reloc
, /* special_function */
473 "R_PPC_GOT16_HA", /* name */
474 FALSE
, /* partial_inplace */
476 0xffff, /* dst_mask */
477 FALSE
), /* pcrel_offset */
479 /* Like R_PPC_REL24, but referring to the procedure linkage table
480 entry for the symbol. */
481 HOWTO (R_PPC_PLTREL24
, /* type */
483 2, /* size (0 = byte, 1 = short, 2 = long) */
485 TRUE
, /* pc_relative */
487 complain_overflow_signed
, /* complain_on_overflow */
488 ppc_elf_unhandled_reloc
, /* special_function */
489 "R_PPC_PLTREL24", /* name */
490 FALSE
, /* partial_inplace */
492 0x3fffffc, /* dst_mask */
493 TRUE
), /* pcrel_offset */
495 /* This is used only by the dynamic linker. The symbol should exist
496 both in the object being run and in some shared library. The
497 dynamic linker copies the data addressed by the symbol from the
498 shared library into the object, because the object being
499 run has to have the data at some particular address. */
500 HOWTO (R_PPC_COPY
, /* type */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
504 FALSE
, /* pc_relative */
506 complain_overflow_dont
, /* complain_on_overflow */
507 ppc_elf_unhandled_reloc
, /* special_function */
508 "R_PPC_COPY", /* name */
509 FALSE
, /* partial_inplace */
512 FALSE
), /* pcrel_offset */
514 /* Like R_PPC_ADDR32, but used when setting global offset table
516 HOWTO (R_PPC_GLOB_DAT
, /* type */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
520 FALSE
, /* pc_relative */
522 complain_overflow_dont
, /* complain_on_overflow */
523 ppc_elf_unhandled_reloc
, /* special_function */
524 "R_PPC_GLOB_DAT", /* name */
525 FALSE
, /* partial_inplace */
527 0xffffffff, /* dst_mask */
528 FALSE
), /* pcrel_offset */
530 /* Marks a procedure linkage table entry for a symbol. */
531 HOWTO (R_PPC_JMP_SLOT
, /* type */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
535 FALSE
, /* pc_relative */
537 complain_overflow_dont
, /* complain_on_overflow */
538 ppc_elf_unhandled_reloc
, /* special_function */
539 "R_PPC_JMP_SLOT", /* name */
540 FALSE
, /* partial_inplace */
543 FALSE
), /* pcrel_offset */
545 /* Used only by the dynamic linker. When the object is run, this
546 longword is set to the load address of the object, plus the
548 HOWTO (R_PPC_RELATIVE
, /* type */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
552 FALSE
, /* pc_relative */
554 complain_overflow_dont
, /* complain_on_overflow */
555 bfd_elf_generic_reloc
, /* special_function */
556 "R_PPC_RELATIVE", /* name */
557 FALSE
, /* partial_inplace */
559 0xffffffff, /* dst_mask */
560 FALSE
), /* pcrel_offset */
562 /* Like R_PPC_REL24, but uses the value of the symbol within the
563 object rather than the final value. Normally used for
564 _GLOBAL_OFFSET_TABLE_. */
565 HOWTO (R_PPC_LOCAL24PC
, /* type */
567 2, /* size (0 = byte, 1 = short, 2 = long) */
569 TRUE
, /* pc_relative */
571 complain_overflow_signed
, /* complain_on_overflow */
572 bfd_elf_generic_reloc
, /* special_function */
573 "R_PPC_LOCAL24PC", /* name */
574 FALSE
, /* partial_inplace */
576 0x3fffffc, /* dst_mask */
577 TRUE
), /* pcrel_offset */
579 /* Like R_PPC_ADDR32, but may be unaligned. */
580 HOWTO (R_PPC_UADDR32
, /* type */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE
, /* pc_relative */
586 complain_overflow_dont
, /* complain_on_overflow */
587 bfd_elf_generic_reloc
, /* special_function */
588 "R_PPC_UADDR32", /* name */
589 FALSE
, /* partial_inplace */
591 0xffffffff, /* dst_mask */
592 FALSE
), /* pcrel_offset */
594 /* Like R_PPC_ADDR16, but may be unaligned. */
595 HOWTO (R_PPC_UADDR16
, /* type */
597 1, /* size (0 = byte, 1 = short, 2 = long) */
599 FALSE
, /* pc_relative */
601 complain_overflow_bitfield
, /* complain_on_overflow */
602 bfd_elf_generic_reloc
, /* special_function */
603 "R_PPC_UADDR16", /* name */
604 FALSE
, /* partial_inplace */
606 0xffff, /* dst_mask */
607 FALSE
), /* pcrel_offset */
609 /* 32-bit PC relative */
610 HOWTO (R_PPC_REL32
, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 TRUE
, /* pc_relative */
616 complain_overflow_dont
, /* complain_on_overflow */
617 bfd_elf_generic_reloc
, /* special_function */
618 "R_PPC_REL32", /* name */
619 FALSE
, /* partial_inplace */
621 0xffffffff, /* dst_mask */
622 TRUE
), /* pcrel_offset */
624 /* 32-bit relocation to the symbol's procedure linkage table.
625 FIXME: not supported. */
626 HOWTO (R_PPC_PLT32
, /* type */
628 2, /* size (0 = byte, 1 = short, 2 = long) */
630 FALSE
, /* pc_relative */
632 complain_overflow_dont
, /* complain_on_overflow */
633 ppc_elf_unhandled_reloc
, /* special_function */
634 "R_PPC_PLT32", /* name */
635 FALSE
, /* partial_inplace */
638 FALSE
), /* pcrel_offset */
640 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
641 FIXME: not supported. */
642 HOWTO (R_PPC_PLTREL32
, /* type */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
646 TRUE
, /* pc_relative */
648 complain_overflow_dont
, /* complain_on_overflow */
649 ppc_elf_unhandled_reloc
, /* special_function */
650 "R_PPC_PLTREL32", /* name */
651 FALSE
, /* partial_inplace */
654 TRUE
), /* pcrel_offset */
656 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
658 HOWTO (R_PPC_PLT16_LO
, /* type */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
662 FALSE
, /* pc_relative */
664 complain_overflow_dont
, /* complain_on_overflow */
665 ppc_elf_unhandled_reloc
, /* special_function */
666 "R_PPC_PLT16_LO", /* name */
667 FALSE
, /* partial_inplace */
669 0xffff, /* dst_mask */
670 FALSE
), /* pcrel_offset */
672 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
674 HOWTO (R_PPC_PLT16_HI
, /* type */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
678 FALSE
, /* pc_relative */
680 complain_overflow_dont
, /* complain_on_overflow */
681 ppc_elf_unhandled_reloc
, /* special_function */
682 "R_PPC_PLT16_HI", /* name */
683 FALSE
, /* partial_inplace */
685 0xffff, /* dst_mask */
686 FALSE
), /* pcrel_offset */
688 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
690 HOWTO (R_PPC_PLT16_HA
, /* type */
692 1, /* size (0 = byte, 1 = short, 2 = long) */
694 FALSE
, /* pc_relative */
696 complain_overflow_dont
, /* complain_on_overflow */
697 ppc_elf_unhandled_reloc
, /* special_function */
698 "R_PPC_PLT16_HA", /* name */
699 FALSE
, /* partial_inplace */
701 0xffff, /* dst_mask */
702 FALSE
), /* pcrel_offset */
704 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
706 HOWTO (R_PPC_SDAREL16
, /* type */
708 1, /* size (0 = byte, 1 = short, 2 = long) */
710 FALSE
, /* pc_relative */
712 complain_overflow_signed
, /* complain_on_overflow */
713 ppc_elf_unhandled_reloc
, /* special_function */
714 "R_PPC_SDAREL16", /* name */
715 FALSE
, /* partial_inplace */
717 0xffff, /* dst_mask */
718 FALSE
), /* pcrel_offset */
720 /* 16-bit section relative relocation. */
721 HOWTO (R_PPC_SECTOFF
, /* type */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
725 FALSE
, /* pc_relative */
727 complain_overflow_signed
, /* complain_on_overflow */
728 ppc_elf_unhandled_reloc
, /* special_function */
729 "R_PPC_SECTOFF", /* name */
730 FALSE
, /* partial_inplace */
732 0xffff, /* dst_mask */
733 FALSE
), /* pcrel_offset */
735 /* 16-bit lower half section relative relocation. */
736 HOWTO (R_PPC_SECTOFF_LO
, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE
, /* pc_relative */
742 complain_overflow_dont
, /* complain_on_overflow */
743 ppc_elf_unhandled_reloc
, /* special_function */
744 "R_PPC_SECTOFF_LO", /* name */
745 FALSE
, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE
), /* pcrel_offset */
750 /* 16-bit upper half section relative relocation. */
751 HOWTO (R_PPC_SECTOFF_HI
, /* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE
, /* pc_relative */
757 complain_overflow_dont
, /* complain_on_overflow */
758 ppc_elf_unhandled_reloc
, /* special_function */
759 "R_PPC_SECTOFF_HI", /* name */
760 FALSE
, /* partial_inplace */
762 0xffff, /* dst_mask */
763 FALSE
), /* pcrel_offset */
765 /* 16-bit upper half adjusted section relative relocation. */
766 HOWTO (R_PPC_SECTOFF_HA
, /* type */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
770 FALSE
, /* pc_relative */
772 complain_overflow_dont
, /* complain_on_overflow */
773 ppc_elf_unhandled_reloc
, /* special_function */
774 "R_PPC_SECTOFF_HA", /* name */
775 FALSE
, /* partial_inplace */
777 0xffff, /* dst_mask */
778 FALSE
), /* pcrel_offset */
780 /* Marker relocs for TLS. */
783 2, /* size (0 = byte, 1 = short, 2 = long) */
785 FALSE
, /* pc_relative */
787 complain_overflow_dont
, /* complain_on_overflow */
788 bfd_elf_generic_reloc
, /* special_function */
789 "R_PPC_TLS", /* name */
790 FALSE
, /* partial_inplace */
793 FALSE
), /* pcrel_offset */
797 2, /* size (0 = byte, 1 = short, 2 = long) */
799 FALSE
, /* pc_relative */
801 complain_overflow_dont
, /* complain_on_overflow */
802 bfd_elf_generic_reloc
, /* special_function */
803 "R_PPC_TLSGD", /* name */
804 FALSE
, /* partial_inplace */
807 FALSE
), /* pcrel_offset */
811 2, /* size (0 = byte, 1 = short, 2 = long) */
813 FALSE
, /* pc_relative */
815 complain_overflow_dont
, /* complain_on_overflow */
816 bfd_elf_generic_reloc
, /* special_function */
817 "R_PPC_TLSLD", /* name */
818 FALSE
, /* partial_inplace */
821 FALSE
), /* pcrel_offset */
823 /* Computes the load module index of the load module that contains the
824 definition of its TLS sym. */
825 HOWTO (R_PPC_DTPMOD32
,
827 2, /* size (0 = byte, 1 = short, 2 = long) */
829 FALSE
, /* pc_relative */
831 complain_overflow_dont
, /* complain_on_overflow */
832 ppc_elf_unhandled_reloc
, /* special_function */
833 "R_PPC_DTPMOD32", /* name */
834 FALSE
, /* partial_inplace */
836 0xffffffff, /* dst_mask */
837 FALSE
), /* pcrel_offset */
839 /* Computes a dtv-relative displacement, the difference between the value
840 of sym+add and the base address of the thread-local storage block that
841 contains the definition of sym, minus 0x8000. */
842 HOWTO (R_PPC_DTPREL32
,
844 2, /* size (0 = byte, 1 = short, 2 = long) */
846 FALSE
, /* pc_relative */
848 complain_overflow_dont
, /* complain_on_overflow */
849 ppc_elf_unhandled_reloc
, /* special_function */
850 "R_PPC_DTPREL32", /* name */
851 FALSE
, /* partial_inplace */
853 0xffffffff, /* dst_mask */
854 FALSE
), /* pcrel_offset */
856 /* A 16 bit dtprel reloc. */
857 HOWTO (R_PPC_DTPREL16
,
859 1, /* size (0 = byte, 1 = short, 2 = long) */
861 FALSE
, /* pc_relative */
863 complain_overflow_signed
, /* complain_on_overflow */
864 ppc_elf_unhandled_reloc
, /* special_function */
865 "R_PPC_DTPREL16", /* name */
866 FALSE
, /* partial_inplace */
868 0xffff, /* dst_mask */
869 FALSE
), /* pcrel_offset */
871 /* Like DTPREL16, but no overflow. */
872 HOWTO (R_PPC_DTPREL16_LO
,
874 1, /* size (0 = byte, 1 = short, 2 = long) */
876 FALSE
, /* pc_relative */
878 complain_overflow_dont
, /* complain_on_overflow */
879 ppc_elf_unhandled_reloc
, /* special_function */
880 "R_PPC_DTPREL16_LO", /* name */
881 FALSE
, /* partial_inplace */
883 0xffff, /* dst_mask */
884 FALSE
), /* pcrel_offset */
886 /* Like DTPREL16_LO, but next higher group of 16 bits. */
887 HOWTO (R_PPC_DTPREL16_HI
,
889 1, /* size (0 = byte, 1 = short, 2 = long) */
891 FALSE
, /* pc_relative */
893 complain_overflow_dont
, /* complain_on_overflow */
894 ppc_elf_unhandled_reloc
, /* special_function */
895 "R_PPC_DTPREL16_HI", /* name */
896 FALSE
, /* partial_inplace */
898 0xffff, /* dst_mask */
899 FALSE
), /* pcrel_offset */
901 /* Like DTPREL16_HI, but adjust for low 16 bits. */
902 HOWTO (R_PPC_DTPREL16_HA
,
904 1, /* size (0 = byte, 1 = short, 2 = long) */
906 FALSE
, /* pc_relative */
908 complain_overflow_dont
, /* complain_on_overflow */
909 ppc_elf_unhandled_reloc
, /* special_function */
910 "R_PPC_DTPREL16_HA", /* name */
911 FALSE
, /* partial_inplace */
913 0xffff, /* dst_mask */
914 FALSE
), /* pcrel_offset */
916 /* Computes a tp-relative displacement, the difference between the value of
917 sym+add and the value of the thread pointer (r13). */
918 HOWTO (R_PPC_TPREL32
,
920 2, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE
, /* pc_relative */
924 complain_overflow_dont
, /* complain_on_overflow */
925 ppc_elf_unhandled_reloc
, /* special_function */
926 "R_PPC_TPREL32", /* name */
927 FALSE
, /* partial_inplace */
929 0xffffffff, /* dst_mask */
930 FALSE
), /* pcrel_offset */
932 /* A 16 bit tprel reloc. */
933 HOWTO (R_PPC_TPREL16
,
935 1, /* size (0 = byte, 1 = short, 2 = long) */
937 FALSE
, /* pc_relative */
939 complain_overflow_signed
, /* complain_on_overflow */
940 ppc_elf_unhandled_reloc
, /* special_function */
941 "R_PPC_TPREL16", /* name */
942 FALSE
, /* partial_inplace */
944 0xffff, /* dst_mask */
945 FALSE
), /* pcrel_offset */
947 /* Like TPREL16, but no overflow. */
948 HOWTO (R_PPC_TPREL16_LO
,
950 1, /* size (0 = byte, 1 = short, 2 = long) */
952 FALSE
, /* pc_relative */
954 complain_overflow_dont
, /* complain_on_overflow */
955 ppc_elf_unhandled_reloc
, /* special_function */
956 "R_PPC_TPREL16_LO", /* name */
957 FALSE
, /* partial_inplace */
959 0xffff, /* dst_mask */
960 FALSE
), /* pcrel_offset */
962 /* Like TPREL16_LO, but next higher group of 16 bits. */
963 HOWTO (R_PPC_TPREL16_HI
,
965 1, /* size (0 = byte, 1 = short, 2 = long) */
967 FALSE
, /* pc_relative */
969 complain_overflow_dont
, /* complain_on_overflow */
970 ppc_elf_unhandled_reloc
, /* special_function */
971 "R_PPC_TPREL16_HI", /* name */
972 FALSE
, /* partial_inplace */
974 0xffff, /* dst_mask */
975 FALSE
), /* pcrel_offset */
977 /* Like TPREL16_HI, but adjust for low 16 bits. */
978 HOWTO (R_PPC_TPREL16_HA
,
980 1, /* size (0 = byte, 1 = short, 2 = long) */
982 FALSE
, /* pc_relative */
984 complain_overflow_dont
, /* complain_on_overflow */
985 ppc_elf_unhandled_reloc
, /* special_function */
986 "R_PPC_TPREL16_HA", /* name */
987 FALSE
, /* partial_inplace */
989 0xffff, /* dst_mask */
990 FALSE
), /* pcrel_offset */
992 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
993 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
994 to the first entry. */
995 HOWTO (R_PPC_GOT_TLSGD16
,
997 1, /* size (0 = byte, 1 = short, 2 = long) */
999 FALSE
, /* pc_relative */
1001 complain_overflow_signed
, /* complain_on_overflow */
1002 ppc_elf_unhandled_reloc
, /* special_function */
1003 "R_PPC_GOT_TLSGD16", /* name */
1004 FALSE
, /* partial_inplace */
1006 0xffff, /* dst_mask */
1007 FALSE
), /* pcrel_offset */
1009 /* Like GOT_TLSGD16, but no overflow. */
1010 HOWTO (R_PPC_GOT_TLSGD16_LO
,
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE
, /* pc_relative */
1016 complain_overflow_dont
, /* complain_on_overflow */
1017 ppc_elf_unhandled_reloc
, /* special_function */
1018 "R_PPC_GOT_TLSGD16_LO", /* name */
1019 FALSE
, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE
), /* pcrel_offset */
1024 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1025 HOWTO (R_PPC_GOT_TLSGD16_HI
,
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 FALSE
, /* pc_relative */
1031 complain_overflow_dont
, /* complain_on_overflow */
1032 ppc_elf_unhandled_reloc
, /* special_function */
1033 "R_PPC_GOT_TLSGD16_HI", /* name */
1034 FALSE
, /* partial_inplace */
1036 0xffff, /* dst_mask */
1037 FALSE
), /* pcrel_offset */
1039 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1040 HOWTO (R_PPC_GOT_TLSGD16_HA
,
1041 16, /* rightshift */
1042 1, /* size (0 = byte, 1 = short, 2 = long) */
1044 FALSE
, /* pc_relative */
1046 complain_overflow_dont
, /* complain_on_overflow */
1047 ppc_elf_unhandled_reloc
, /* special_function */
1048 "R_PPC_GOT_TLSGD16_HA", /* name */
1049 FALSE
, /* partial_inplace */
1051 0xffff, /* dst_mask */
1052 FALSE
), /* pcrel_offset */
1054 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1055 with values (sym+add)@dtpmod and zero, and computes the offset to the
1057 HOWTO (R_PPC_GOT_TLSLD16
,
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 FALSE
, /* pc_relative */
1063 complain_overflow_signed
, /* complain_on_overflow */
1064 ppc_elf_unhandled_reloc
, /* special_function */
1065 "R_PPC_GOT_TLSLD16", /* name */
1066 FALSE
, /* partial_inplace */
1068 0xffff, /* dst_mask */
1069 FALSE
), /* pcrel_offset */
1071 /* Like GOT_TLSLD16, but no overflow. */
1072 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1074 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 FALSE
, /* pc_relative */
1078 complain_overflow_dont
, /* complain_on_overflow */
1079 ppc_elf_unhandled_reloc
, /* special_function */
1080 "R_PPC_GOT_TLSLD16_LO", /* name */
1081 FALSE
, /* partial_inplace */
1083 0xffff, /* dst_mask */
1084 FALSE
), /* pcrel_offset */
1086 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1087 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1088 16, /* rightshift */
1089 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 FALSE
, /* pc_relative */
1093 complain_overflow_dont
, /* complain_on_overflow */
1094 ppc_elf_unhandled_reloc
, /* special_function */
1095 "R_PPC_GOT_TLSLD16_HI", /* name */
1096 FALSE
, /* partial_inplace */
1098 0xffff, /* dst_mask */
1099 FALSE
), /* pcrel_offset */
1101 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1102 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1103 16, /* rightshift */
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE
, /* pc_relative */
1108 complain_overflow_dont
, /* complain_on_overflow */
1109 ppc_elf_unhandled_reloc
, /* special_function */
1110 "R_PPC_GOT_TLSLD16_HA", /* name */
1111 FALSE
, /* partial_inplace */
1113 0xffff, /* dst_mask */
1114 FALSE
), /* pcrel_offset */
1116 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1117 the offset to the entry. */
1118 HOWTO (R_PPC_GOT_DTPREL16
,
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE
, /* pc_relative */
1124 complain_overflow_signed
, /* complain_on_overflow */
1125 ppc_elf_unhandled_reloc
, /* special_function */
1126 "R_PPC_GOT_DTPREL16", /* name */
1127 FALSE
, /* partial_inplace */
1129 0xffff, /* dst_mask */
1130 FALSE
), /* pcrel_offset */
1132 /* Like GOT_DTPREL16, but no overflow. */
1133 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE
, /* pc_relative */
1139 complain_overflow_dont
, /* complain_on_overflow */
1140 ppc_elf_unhandled_reloc
, /* special_function */
1141 "R_PPC_GOT_DTPREL16_LO", /* name */
1142 FALSE
, /* partial_inplace */
1144 0xffff, /* dst_mask */
1145 FALSE
), /* pcrel_offset */
1147 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1148 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1149 16, /* rightshift */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE
, /* pc_relative */
1154 complain_overflow_dont
, /* complain_on_overflow */
1155 ppc_elf_unhandled_reloc
, /* special_function */
1156 "R_PPC_GOT_DTPREL16_HI", /* name */
1157 FALSE
, /* partial_inplace */
1159 0xffff, /* dst_mask */
1160 FALSE
), /* pcrel_offset */
1162 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1163 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1164 16, /* rightshift */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE
, /* pc_relative */
1169 complain_overflow_dont
, /* complain_on_overflow */
1170 ppc_elf_unhandled_reloc
, /* special_function */
1171 "R_PPC_GOT_DTPREL16_HA", /* name */
1172 FALSE
, /* partial_inplace */
1174 0xffff, /* dst_mask */
1175 FALSE
), /* pcrel_offset */
1177 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1178 offset to the entry. */
1179 HOWTO (R_PPC_GOT_TPREL16
,
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1183 FALSE
, /* pc_relative */
1185 complain_overflow_signed
, /* complain_on_overflow */
1186 ppc_elf_unhandled_reloc
, /* special_function */
1187 "R_PPC_GOT_TPREL16", /* name */
1188 FALSE
, /* partial_inplace */
1190 0xffff, /* dst_mask */
1191 FALSE
), /* pcrel_offset */
1193 /* Like GOT_TPREL16, but no overflow. */
1194 HOWTO (R_PPC_GOT_TPREL16_LO
,
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 FALSE
, /* pc_relative */
1200 complain_overflow_dont
, /* complain_on_overflow */
1201 ppc_elf_unhandled_reloc
, /* special_function */
1202 "R_PPC_GOT_TPREL16_LO", /* name */
1203 FALSE
, /* partial_inplace */
1205 0xffff, /* dst_mask */
1206 FALSE
), /* pcrel_offset */
1208 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1209 HOWTO (R_PPC_GOT_TPREL16_HI
,
1210 16, /* rightshift */
1211 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 FALSE
, /* pc_relative */
1215 complain_overflow_dont
, /* complain_on_overflow */
1216 ppc_elf_unhandled_reloc
, /* special_function */
1217 "R_PPC_GOT_TPREL16_HI", /* name */
1218 FALSE
, /* partial_inplace */
1220 0xffff, /* dst_mask */
1221 FALSE
), /* pcrel_offset */
1223 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1224 HOWTO (R_PPC_GOT_TPREL16_HA
,
1225 16, /* rightshift */
1226 1, /* size (0 = byte, 1 = short, 2 = long) */
1228 FALSE
, /* pc_relative */
1230 complain_overflow_dont
, /* complain_on_overflow */
1231 ppc_elf_unhandled_reloc
, /* special_function */
1232 "R_PPC_GOT_TPREL16_HA", /* name */
1233 FALSE
, /* partial_inplace */
1235 0xffff, /* dst_mask */
1236 FALSE
), /* pcrel_offset */
1238 /* The remaining relocs are from the Embedded ELF ABI, and are not
1239 in the SVR4 ELF ABI. */
1241 /* 32 bit value resulting from the addend minus the symbol. */
1242 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1244 2, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE
, /* pc_relative */
1248 complain_overflow_dont
, /* complain_on_overflow */
1249 ppc_elf_unhandled_reloc
, /* special_function */
1250 "R_PPC_EMB_NADDR32", /* name */
1251 FALSE
, /* partial_inplace */
1253 0xffffffff, /* dst_mask */
1254 FALSE
), /* pcrel_offset */
1256 /* 16 bit value resulting from the addend minus the symbol. */
1257 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1259 1, /* size (0 = byte, 1 = short, 2 = long) */
1261 FALSE
, /* pc_relative */
1263 complain_overflow_signed
, /* complain_on_overflow */
1264 ppc_elf_unhandled_reloc
, /* special_function */
1265 "R_PPC_EMB_NADDR16", /* name */
1266 FALSE
, /* partial_inplace */
1268 0xffff, /* dst_mask */
1269 FALSE
), /* pcrel_offset */
1271 /* 16 bit value resulting from the addend minus the symbol. */
1272 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1274 1, /* size (0 = byte, 1 = short, 2 = long) */
1276 FALSE
, /* pc_relative */
1278 complain_overflow_dont
,/* complain_on_overflow */
1279 ppc_elf_unhandled_reloc
, /* special_function */
1280 "R_PPC_EMB_ADDR16_LO", /* name */
1281 FALSE
, /* partial_inplace */
1283 0xffff, /* dst_mask */
1284 FALSE
), /* pcrel_offset */
1286 /* The high order 16 bits of the addend minus the symbol. */
1287 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1288 16, /* rightshift */
1289 1, /* size (0 = byte, 1 = short, 2 = long) */
1291 FALSE
, /* pc_relative */
1293 complain_overflow_dont
, /* complain_on_overflow */
1294 ppc_elf_unhandled_reloc
, /* special_function */
1295 "R_PPC_EMB_NADDR16_HI", /* name */
1296 FALSE
, /* partial_inplace */
1298 0xffff, /* dst_mask */
1299 FALSE
), /* pcrel_offset */
1301 /* The high order 16 bits of the result of the addend minus the address,
1302 plus 1 if the contents of the low 16 bits, treated as a signed number,
1304 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1305 16, /* rightshift */
1306 1, /* size (0 = byte, 1 = short, 2 = long) */
1308 FALSE
, /* pc_relative */
1310 complain_overflow_dont
, /* complain_on_overflow */
1311 ppc_elf_unhandled_reloc
, /* special_function */
1312 "R_PPC_EMB_NADDR16_HA", /* name */
1313 FALSE
, /* partial_inplace */
1315 0xffff, /* dst_mask */
1316 FALSE
), /* pcrel_offset */
1318 /* 16 bit value resulting from allocating a 4 byte word to hold an
1319 address in the .sdata section, and returning the offset from
1320 _SDA_BASE_ for that relocation. */
1321 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1323 1, /* size (0 = byte, 1 = short, 2 = long) */
1325 FALSE
, /* pc_relative */
1327 complain_overflow_signed
, /* complain_on_overflow */
1328 ppc_elf_unhandled_reloc
, /* special_function */
1329 "R_PPC_EMB_SDAI16", /* name */
1330 FALSE
, /* partial_inplace */
1332 0xffff, /* dst_mask */
1333 FALSE
), /* pcrel_offset */
1335 /* 16 bit value resulting from allocating a 4 byte word to hold an
1336 address in the .sdata2 section, and returning the offset from
1337 _SDA2_BASE_ for that relocation. */
1338 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1340 1, /* size (0 = byte, 1 = short, 2 = long) */
1342 FALSE
, /* pc_relative */
1344 complain_overflow_signed
, /* complain_on_overflow */
1345 ppc_elf_unhandled_reloc
, /* special_function */
1346 "R_PPC_EMB_SDA2I16", /* name */
1347 FALSE
, /* partial_inplace */
1349 0xffff, /* dst_mask */
1350 FALSE
), /* pcrel_offset */
1352 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1353 small data items. */
1354 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1356 1, /* size (0 = byte, 1 = short, 2 = long) */
1358 FALSE
, /* pc_relative */
1360 complain_overflow_signed
, /* complain_on_overflow */
1361 ppc_elf_unhandled_reloc
, /* special_function */
1362 "R_PPC_EMB_SDA2REL", /* name */
1363 FALSE
, /* partial_inplace */
1365 0xffff, /* dst_mask */
1366 FALSE
), /* pcrel_offset */
1368 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1369 signed offset from the appropriate base, and filling in the register
1370 field with the appropriate register (0, 2, or 13). */
1371 HOWTO (R_PPC_EMB_SDA21
, /* type */
1373 2, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE
, /* pc_relative */
1377 complain_overflow_signed
, /* complain_on_overflow */
1378 ppc_elf_unhandled_reloc
, /* special_function */
1379 "R_PPC_EMB_SDA21", /* name */
1380 FALSE
, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE
), /* pcrel_offset */
1385 /* Relocation not handled: R_PPC_EMB_MRKREF */
1386 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1387 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1388 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1389 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1390 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1392 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1393 in the 16 bit signed offset from the appropriate base, and filling in the
1394 register field with the appropriate register (0, 2, or 13). */
1395 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1397 1, /* size (0 = byte, 1 = short, 2 = long) */
1399 FALSE
, /* pc_relative */
1401 complain_overflow_signed
, /* complain_on_overflow */
1402 ppc_elf_unhandled_reloc
, /* special_function */
1403 "R_PPC_EMB_RELSDA", /* name */
1404 FALSE
, /* partial_inplace */
1406 0xffff, /* dst_mask */
1407 FALSE
), /* pcrel_offset */
1409 /* A relative 8 bit branch. */
1410 HOWTO (R_PPC_VLE_REL8
, /* type */
1412 1, /* size (0 = byte, 1 = short, 2 = long) */
1414 TRUE
, /* pc_relative */
1416 complain_overflow_signed
, /* complain_on_overflow */
1417 bfd_elf_generic_reloc
, /* special_function */
1418 "R_PPC_VLE_REL8", /* name */
1419 FALSE
, /* partial_inplace */
1421 0xff, /* dst_mask */
1422 TRUE
), /* pcrel_offset */
1424 /* A relative 15 bit branch. */
1425 HOWTO (R_PPC_VLE_REL15
, /* type */
1427 2, /* size (0 = byte, 1 = short, 2 = long) */
1429 TRUE
, /* pc_relative */
1431 complain_overflow_signed
, /* complain_on_overflow */
1432 bfd_elf_generic_reloc
, /* special_function */
1433 "R_PPC_VLE_REL15", /* name */
1434 FALSE
, /* partial_inplace */
1436 0xfffe, /* dst_mask */
1437 TRUE
), /* pcrel_offset */
1439 /* A relative 24 bit branch. */
1440 HOWTO (R_PPC_VLE_REL24
, /* type */
1442 2, /* size (0 = byte, 1 = short, 2 = long) */
1444 TRUE
, /* pc_relative */
1446 complain_overflow_signed
, /* complain_on_overflow */
1447 bfd_elf_generic_reloc
, /* special_function */
1448 "R_PPC_VLE_REL24", /* name */
1449 FALSE
, /* partial_inplace */
1451 0x1fffffe, /* dst_mask */
1452 TRUE
), /* pcrel_offset */
1454 /* The 16 LSBS in split16a format. */
1455 HOWTO (R_PPC_VLE_LO16A
, /* type */
1457 2, /* size (0 = byte, 1 = short, 2 = long) */
1459 FALSE
, /* pc_relative */
1461 complain_overflow_dont
, /* complain_on_overflow */
1462 ppc_elf_unhandled_reloc
, /* special_function */
1463 "R_PPC_VLE_LO16A", /* name */
1464 FALSE
, /* partial_inplace */
1466 0x1f07ff, /* dst_mask */
1467 FALSE
), /* pcrel_offset */
1469 /* The 16 LSBS in split16d format. */
1470 HOWTO (R_PPC_VLE_LO16D
, /* type */
1472 2, /* size (0 = byte, 1 = short, 2 = long) */
1474 FALSE
, /* pc_relative */
1476 complain_overflow_dont
, /* complain_on_overflow */
1477 ppc_elf_unhandled_reloc
, /* special_function */
1478 "R_PPC_VLE_LO16D", /* name */
1479 FALSE
, /* partial_inplace */
1481 0x3e007ff, /* dst_mask */
1482 FALSE
), /* pcrel_offset */
1484 /* Bits 16-31 split16a format. */
1485 HOWTO (R_PPC_VLE_HI16A
, /* type */
1486 16, /* rightshift */
1487 2, /* size (0 = byte, 1 = short, 2 = long) */
1489 FALSE
, /* pc_relative */
1491 complain_overflow_dont
, /* complain_on_overflow */
1492 ppc_elf_unhandled_reloc
, /* special_function */
1493 "R_PPC_VLE_HI16A", /* name */
1494 FALSE
, /* partial_inplace */
1496 0x1f07ff, /* dst_mask */
1497 FALSE
), /* pcrel_offset */
1499 /* Bits 16-31 split16d format. */
1500 HOWTO (R_PPC_VLE_HI16D
, /* type */
1501 16, /* rightshift */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE
, /* pc_relative */
1506 complain_overflow_dont
, /* complain_on_overflow */
1507 ppc_elf_unhandled_reloc
, /* special_function */
1508 "R_PPC_VLE_HI16D", /* name */
1509 FALSE
, /* partial_inplace */
1511 0x3e007ff, /* dst_mask */
1512 FALSE
), /* pcrel_offset */
1514 /* Bits 16-31 (High Adjusted) in split16a format. */
1515 HOWTO (R_PPC_VLE_HA16A
, /* type */
1516 16, /* rightshift */
1517 2, /* size (0 = byte, 1 = short, 2 = long) */
1519 FALSE
, /* pc_relative */
1521 complain_overflow_dont
, /* complain_on_overflow */
1522 ppc_elf_unhandled_reloc
, /* special_function */
1523 "R_PPC_VLE_HA16A", /* name */
1524 FALSE
, /* partial_inplace */
1526 0x1f07ff, /* dst_mask */
1527 FALSE
), /* pcrel_offset */
1529 /* Bits 16-31 (High Adjusted) in split16d format. */
1530 HOWTO (R_PPC_VLE_HA16D
, /* type */
1531 16, /* rightshift */
1532 2, /* size (0 = byte, 1 = short, 2 = long) */
1534 FALSE
, /* pc_relative */
1536 complain_overflow_dont
, /* complain_on_overflow */
1537 ppc_elf_unhandled_reloc
, /* special_function */
1538 "R_PPC_VLE_HA16D", /* name */
1539 FALSE
, /* partial_inplace */
1541 0x3e007ff, /* dst_mask */
1542 FALSE
), /* pcrel_offset */
1544 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1545 instructions. If the register base is 0 then the linker changes
1546 the e_add16i to an e_li instruction. */
1547 HOWTO (R_PPC_VLE_SDA21
, /* type */
1549 2, /* size (0 = byte, 1 = short, 2 = long) */
1551 FALSE
, /* pc_relative */
1553 complain_overflow_signed
, /* complain_on_overflow */
1554 ppc_elf_unhandled_reloc
, /* special_function */
1555 "R_PPC_VLE_SDA21", /* name */
1556 FALSE
, /* partial_inplace */
1558 0xffff, /* dst_mask */
1559 FALSE
), /* pcrel_offset */
1561 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1562 HOWTO (R_PPC_VLE_SDA21_LO
, /* type */
1564 2, /* size (0 = byte, 1 = short, 2 = long) */
1566 FALSE
, /* pc_relative */
1568 complain_overflow_dont
, /* complain_on_overflow */
1569 ppc_elf_unhandled_reloc
, /* special_function */
1570 "R_PPC_VLE_SDA21_LO", /* name */
1571 FALSE
, /* partial_inplace */
1573 0xffff, /* dst_mask */
1574 FALSE
), /* pcrel_offset */
1576 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1577 HOWTO (R_PPC_VLE_SDAREL_LO16A
,/* type */
1579 2, /* size (0 = byte, 1 = short, 2 = long) */
1581 FALSE
, /* pc_relative */
1583 complain_overflow_dont
, /* complain_on_overflow */
1584 ppc_elf_unhandled_reloc
, /* special_function */
1585 "R_PPC_VLE_SDAREL_LO16A", /* name */
1586 FALSE
, /* partial_inplace */
1588 0x1f07ff, /* dst_mask */
1589 FALSE
), /* pcrel_offset */
1591 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1592 HOWTO (R_PPC_VLE_SDAREL_LO16D
, /* type */
1594 2, /* size (0 = byte, 1 = short, 2 = long) */
1596 FALSE
, /* pc_relative */
1598 complain_overflow_dont
, /* complain_on_overflow */
1599 ppc_elf_unhandled_reloc
, /* special_function */
1600 "R_PPC_VLE_SDAREL_LO16D", /* name */
1601 FALSE
, /* partial_inplace */
1603 0x3e007ff, /* dst_mask */
1604 FALSE
), /* pcrel_offset */
1606 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1607 HOWTO (R_PPC_VLE_SDAREL_HI16A
, /* type */
1608 16, /* rightshift */
1609 2, /* size (0 = byte, 1 = short, 2 = long) */
1611 FALSE
, /* pc_relative */
1613 complain_overflow_dont
, /* complain_on_overflow */
1614 ppc_elf_unhandled_reloc
, /* special_function */
1615 "R_PPC_VLE_SDAREL_HI16A", /* name */
1616 FALSE
, /* partial_inplace */
1618 0x1f07ff, /* dst_mask */
1619 FALSE
), /* pcrel_offset */
1621 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1622 HOWTO (R_PPC_VLE_SDAREL_HI16D
, /* type */
1623 16, /* rightshift */
1624 2, /* size (0 = byte, 1 = short, 2 = long) */
1626 FALSE
, /* pc_relative */
1628 complain_overflow_dont
, /* complain_on_overflow */
1629 ppc_elf_unhandled_reloc
, /* special_function */
1630 "R_PPC_VLE_SDAREL_HI16D", /* name */
1631 FALSE
, /* partial_inplace */
1633 0x3e007ff, /* dst_mask */
1634 FALSE
), /* pcrel_offset */
1636 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1637 HOWTO (R_PPC_VLE_SDAREL_HA16A
, /* type */
1638 16, /* rightshift */
1639 2, /* size (0 = byte, 1 = short, 2 = long) */
1641 FALSE
, /* pc_relative */
1643 complain_overflow_dont
, /* complain_on_overflow */
1644 ppc_elf_unhandled_reloc
, /* special_function */
1645 "R_PPC_VLE_SDAREL_HA16A", /* name */
1646 FALSE
, /* partial_inplace */
1648 0x1f07ff, /* dst_mask */
1649 FALSE
), /* pcrel_offset */
1651 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1652 HOWTO (R_PPC_VLE_SDAREL_HA16D
, /* type */
1653 16, /* rightshift */
1654 2, /* size (0 = byte, 1 = short, 2 = long) */
1656 FALSE
, /* pc_relative */
1658 complain_overflow_dont
, /* complain_on_overflow */
1659 ppc_elf_unhandled_reloc
, /* special_function */
1660 "R_PPC_VLE_SDAREL_HA16D", /* name */
1661 FALSE
, /* partial_inplace */
1663 0x3e007ff, /* dst_mask */
1664 FALSE
), /* pcrel_offset */
1666 /* e_li split20 format. */
1667 HOWTO (R_PPC_VLE_ADDR20
, /* type */
1668 16, /* rightshift */
1669 2, /* size (0 = byte, 1 = short, 2 = long) */
1671 FALSE
, /* pc_relative */
1673 complain_overflow_dont
, /* complain_on_overflow */
1674 bfd_elf_generic_reloc
, /* special_function */
1675 "R_PPC_VLE_ADDR20", /* name */
1676 FALSE
, /* partial_inplace */
1678 0x1f07ff, /* dst_mask */
1679 FALSE
), /* pcrel_offset */
1681 HOWTO (R_PPC_IRELATIVE
, /* type */
1683 2, /* size (0 = byte, 1 = short, 2 = long) */
1685 FALSE
, /* pc_relative */
1687 complain_overflow_dont
, /* complain_on_overflow */
1688 ppc_elf_unhandled_reloc
, /* special_function */
1689 "R_PPC_IRELATIVE", /* name */
1690 FALSE
, /* partial_inplace */
1692 0xffffffff, /* dst_mask */
1693 FALSE
), /* pcrel_offset */
1695 /* A 16 bit relative relocation. */
1696 HOWTO (R_PPC_REL16
, /* type */
1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1700 TRUE
, /* pc_relative */
1702 complain_overflow_signed
, /* complain_on_overflow */
1703 bfd_elf_generic_reloc
, /* special_function */
1704 "R_PPC_REL16", /* name */
1705 FALSE
, /* partial_inplace */
1707 0xffff, /* dst_mask */
1708 TRUE
), /* pcrel_offset */
1710 /* A 16 bit relative relocation without overflow. */
1711 HOWTO (R_PPC_REL16_LO
, /* type */
1713 1, /* size (0 = byte, 1 = short, 2 = long) */
1715 TRUE
, /* pc_relative */
1717 complain_overflow_dont
,/* complain_on_overflow */
1718 bfd_elf_generic_reloc
, /* special_function */
1719 "R_PPC_REL16_LO", /* name */
1720 FALSE
, /* partial_inplace */
1722 0xffff, /* dst_mask */
1723 TRUE
), /* pcrel_offset */
1725 /* The high order 16 bits of a relative address. */
1726 HOWTO (R_PPC_REL16_HI
, /* type */
1727 16, /* rightshift */
1728 1, /* size (0 = byte, 1 = short, 2 = long) */
1730 TRUE
, /* pc_relative */
1732 complain_overflow_dont
, /* complain_on_overflow */
1733 bfd_elf_generic_reloc
, /* special_function */
1734 "R_PPC_REL16_HI", /* name */
1735 FALSE
, /* partial_inplace */
1737 0xffff, /* dst_mask */
1738 TRUE
), /* pcrel_offset */
1740 /* The high order 16 bits of a relative address, plus 1 if the contents of
1741 the low 16 bits, treated as a signed number, is negative. */
1742 HOWTO (R_PPC_REL16_HA
, /* type */
1743 16, /* rightshift */
1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1746 TRUE
, /* pc_relative */
1748 complain_overflow_dont
, /* complain_on_overflow */
1749 ppc_elf_addr16_ha_reloc
, /* special_function */
1750 "R_PPC_REL16_HA", /* name */
1751 FALSE
, /* partial_inplace */
1753 0xffff, /* dst_mask */
1754 TRUE
), /* pcrel_offset */
1756 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1757 HOWTO (R_PPC_REL16DX_HA
, /* type */
1758 16, /* rightshift */
1759 2, /* size (0 = byte, 1 = short, 2 = long) */
1761 TRUE
, /* pc_relative */
1763 complain_overflow_signed
, /* complain_on_overflow */
1764 ppc_elf_addr16_ha_reloc
, /* special_function */
1765 "R_PPC_REL16DX_HA", /* name */
1766 FALSE
, /* partial_inplace */
1768 0x1fffc1, /* dst_mask */
1769 TRUE
), /* pcrel_offset */
1771 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1772 HOWTO (R_PPC_16DX_HA
, /* type */
1773 16, /* rightshift */
1774 2, /* size (0 = byte, 1 = short, 2 = long) */
1776 FALSE
, /* pc_relative */
1778 complain_overflow_signed
, /* complain_on_overflow */
1779 ppc_elf_addr16_ha_reloc
, /* special_function */
1780 "R_PPC_16DX_HA", /* name */
1781 FALSE
, /* partial_inplace */
1783 0x1fffc1, /* dst_mask */
1784 FALSE
), /* pcrel_offset */
1786 /* GNU extension to record C++ vtable hierarchy. */
1787 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1789 0, /* size (0 = byte, 1 = short, 2 = long) */
1791 FALSE
, /* pc_relative */
1793 complain_overflow_dont
, /* complain_on_overflow */
1794 NULL
, /* special_function */
1795 "R_PPC_GNU_VTINHERIT", /* name */
1796 FALSE
, /* partial_inplace */
1799 FALSE
), /* pcrel_offset */
1801 /* GNU extension to record C++ vtable member usage. */
1802 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1804 0, /* size (0 = byte, 1 = short, 2 = long) */
1806 FALSE
, /* pc_relative */
1808 complain_overflow_dont
, /* complain_on_overflow */
1809 NULL
, /* special_function */
1810 "R_PPC_GNU_VTENTRY", /* name */
1811 FALSE
, /* partial_inplace */
1814 FALSE
), /* pcrel_offset */
1816 /* Phony reloc to handle AIX style TOC entries. */
1817 HOWTO (R_PPC_TOC16
, /* type */
1819 1, /* size (0 = byte, 1 = short, 2 = long) */
1821 FALSE
, /* pc_relative */
1823 complain_overflow_signed
, /* complain_on_overflow */
1824 ppc_elf_unhandled_reloc
, /* special_function */
1825 "R_PPC_TOC16", /* name */
1826 FALSE
, /* partial_inplace */
1828 0xffff, /* dst_mask */
1829 FALSE
), /* pcrel_offset */
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_PPC_16DX_HA
: r
= R_PPC_16DX_HA
; break;
1993 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC_REL16DX_HA
; break;
1994 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
1995 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
1998 return ppc_elf_howto_table
[r
];
2001 static reloc_howto_type
*
2002 ppc_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2008 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
2010 if (ppc_elf_howto_raw
[i
].name
!= NULL
2011 && strcasecmp (ppc_elf_howto_raw
[i
].name
, r_name
) == 0)
2012 return &ppc_elf_howto_raw
[i
];
2017 /* Set the howto pointer for a PowerPC ELF reloc. */
2020 ppc_elf_info_to_howto (bfd
*abfd
,
2022 Elf_Internal_Rela
*dst
)
2024 unsigned int r_type
;
2026 /* Initialize howto table if not already done. */
2027 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
2028 ppc_elf_howto_init ();
2030 r_type
= ELF32_R_TYPE (dst
->r_info
);
2031 if (r_type
>= R_PPC_max
)
2033 /* xgettext:c-format */
2034 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2036 bfd_set_error (bfd_error_bad_value
);
2037 r_type
= R_PPC_NONE
;
2039 cache_ptr
->howto
= ppc_elf_howto_table
[r_type
];
2041 /* Just because the above assert didn't trigger doesn't mean that
2042 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2043 if (!cache_ptr
->howto
)
2045 /* xgettext:c-format */
2046 _bfd_error_handler (_("%B: invalid relocation type %d"),
2048 bfd_set_error (bfd_error_bad_value
);
2050 cache_ptr
->howto
= ppc_elf_howto_table
[R_PPC_NONE
];
2054 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2056 static bfd_reloc_status_type
2057 ppc_elf_addr16_ha_reloc (bfd
*abfd
,
2058 arelent
*reloc_entry
,
2061 asection
*input_section
,
2063 char **error_message ATTRIBUTE_UNUSED
)
2065 enum elf_ppc_reloc_type r_type
;
2067 bfd_size_type octets
;
2070 if (output_bfd
!= NULL
)
2072 reloc_entry
->address
+= input_section
->output_offset
;
2073 return bfd_reloc_ok
;
2076 reloc_entry
->addend
+= 0x8000;
2077 r_type
= reloc_entry
->howto
->type
;
2078 if (r_type
!= R_PPC_REL16DX_HA
)
2079 return bfd_reloc_continue
;
2082 if (!bfd_is_com_section (symbol
->section
))
2083 value
= symbol
->value
;
2084 value
+= (reloc_entry
->addend
2085 + symbol
->section
->output_offset
2086 + symbol
->section
->output_section
->vma
);
2087 value
-= (reloc_entry
->address
2088 + input_section
->output_offset
2089 + input_section
->output_section
->vma
);
2092 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2093 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2095 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2096 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2097 return bfd_reloc_ok
;
2100 static bfd_reloc_status_type
2101 ppc_elf_unhandled_reloc (bfd
*abfd
,
2102 arelent
*reloc_entry
,
2105 asection
*input_section
,
2107 char **error_message
)
2109 /* If this is a relocatable link (output_bfd test tells us), just
2110 call the generic function. Any adjustment will be done at final
2112 if (output_bfd
!= NULL
)
2113 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2114 input_section
, output_bfd
, error_message
);
2116 if (error_message
!= NULL
)
2118 static char buf
[60];
2119 sprintf (buf
, _("generic linker can't handle %s"),
2120 reloc_entry
->howto
->name
);
2121 *error_message
= buf
;
2123 return bfd_reloc_dangerous
;
2126 /* Sections created by the linker. */
2128 typedef struct elf_linker_section
2130 /* Pointer to the bfd section. */
2134 /* Associated bss section name. */
2135 const char *bss_name
;
2136 /* Associated symbol name. */
2137 const char *sym_name
;
2138 /* Associated symbol. */
2139 struct elf_link_hash_entry
*sym
;
2140 } elf_linker_section_t
;
2142 /* Linked list of allocated pointer entries. This hangs off of the
2143 symbol lists, and provides allows us to return different pointers,
2144 based on different addend's. */
2146 typedef struct elf_linker_section_pointers
2148 /* next allocated pointer for this symbol */
2149 struct elf_linker_section_pointers
*next
;
2150 /* offset of pointer from beginning of section */
2154 /* which linker section this is */
2155 elf_linker_section_t
*lsect
;
2156 } elf_linker_section_pointers_t
;
2158 struct ppc_elf_obj_tdata
2160 struct elf_obj_tdata elf
;
2162 /* A mapping from local symbols to offsets into the various linker
2163 sections added. This is index by the symbol index. */
2164 elf_linker_section_pointers_t
**linker_section_pointers
;
2166 /* Flags used to auto-detect plt type. */
2167 unsigned int makes_plt_call
: 1;
2168 unsigned int has_rel16
: 1;
2171 #define ppc_elf_tdata(bfd) \
2172 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2174 #define elf_local_ptr_offsets(bfd) \
2175 (ppc_elf_tdata (bfd)->linker_section_pointers)
2177 #define is_ppc_elf(bfd) \
2178 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2179 && elf_object_id (bfd) == PPC32_ELF_DATA)
2181 /* Override the generic function because we store some extras. */
2184 ppc_elf_mkobject (bfd
*abfd
)
2186 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
2190 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2193 _bfd_elf_ppc_set_arch (bfd
*abfd
)
2195 unsigned long mach
= 0;
2197 unsigned char *contents
;
2199 if (abfd
->arch_info
->bits_per_word
== 32
2200 && bfd_big_endian (abfd
))
2203 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2204 if ((elf_section_data (s
)->this_hdr
.sh_flags
& SHF_PPC_VLE
) != 0)
2207 mach
= bfd_mach_ppc_vle
;
2212 s
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2213 if (s
!= NULL
&& bfd_malloc_and_get_section (abfd
, s
, &contents
))
2215 unsigned int apuinfo_size
= bfd_get_32 (abfd
, contents
+ 4);
2218 for (i
= 20; i
< apuinfo_size
+ 20 && i
+ 4 <= s
->size
; i
+= 4)
2220 unsigned int val
= bfd_get_32 (abfd
, contents
+ i
);
2223 case PPC_APUINFO_PMR
:
2224 case PPC_APUINFO_RFMCI
:
2226 mach
= bfd_mach_ppc_titan
;
2229 case PPC_APUINFO_ISEL
:
2230 case PPC_APUINFO_CACHELCK
:
2231 if (mach
== bfd_mach_ppc_titan
)
2232 mach
= bfd_mach_ppc_e500mc
;
2235 case PPC_APUINFO_SPE
:
2236 case PPC_APUINFO_EFS
:
2237 case PPC_APUINFO_BRLOCK
:
2238 if (mach
!= bfd_mach_ppc_vle
)
2239 mach
= bfd_mach_ppc_e500
;
2242 case PPC_APUINFO_VLE
:
2243 mach
= bfd_mach_ppc_vle
;
2254 if (mach
!= 0 && mach
!= -1ul)
2256 const bfd_arch_info_type
*arch
;
2258 for (arch
= abfd
->arch_info
->next
; arch
; arch
= arch
->next
)
2259 if (arch
->mach
== mach
)
2261 abfd
->arch_info
= arch
;
2268 /* Fix bad default arch selected for a 32 bit input bfd when the
2269 default is 64 bit. Also select arch based on apuinfo. */
2272 ppc_elf_object_p (bfd
*abfd
)
2274 if (!abfd
->arch_info
->the_default
)
2277 if (abfd
->arch_info
->bits_per_word
== 64)
2279 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2281 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
2283 /* Relies on arch after 64 bit default being 32 bit default. */
2284 abfd
->arch_info
= abfd
->arch_info
->next
;
2285 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
2288 return _bfd_elf_ppc_set_arch (abfd
);
2291 /* Function to set whether a module needs the -mrelocatable bit set. */
2294 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2296 BFD_ASSERT (!elf_flags_init (abfd
)
2297 || elf_elfheader (abfd
)->e_flags
== flags
);
2299 elf_elfheader (abfd
)->e_flags
= flags
;
2300 elf_flags_init (abfd
) = TRUE
;
2304 /* Support for core dump NOTE sections. */
2307 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2312 switch (note
->descsz
)
2317 case 268: /* Linux/PPC. */
2319 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2322 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
2331 /* Make a ".reg/999" section. */
2332 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2333 size
, note
->descpos
+ offset
);
2337 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2339 switch (note
->descsz
)
2344 case 128: /* Linux/PPC elf_prpsinfo. */
2345 elf_tdata (abfd
)->core
->pid
2346 = bfd_get_32 (abfd
, note
->descdata
+ 16);
2347 elf_tdata (abfd
)->core
->program
2348 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
2349 elf_tdata (abfd
)->core
->command
2350 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
2353 /* Note that for some reason, a spurious space is tacked
2354 onto the end of the args in some (at least one anyway)
2355 implementations, so strip it off if it exists. */
2358 char *command
= elf_tdata (abfd
)->core
->command
;
2359 int n
= strlen (command
);
2361 if (0 < n
&& command
[n
- 1] == ' ')
2362 command
[n
- 1] = '\0';
2369 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
2381 va_start (ap
, note_type
);
2382 memset (data
, 0, sizeof (data
));
2383 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
2384 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
2386 return elfcore_write_note (abfd
, buf
, bufsiz
,
2387 "CORE", note_type
, data
, sizeof (data
));
2398 va_start (ap
, note_type
);
2399 memset (data
, 0, 72);
2400 pid
= va_arg (ap
, long);
2401 bfd_put_32 (abfd
, pid
, data
+ 24);
2402 cursig
= va_arg (ap
, int);
2403 bfd_put_16 (abfd
, cursig
, data
+ 12);
2404 greg
= va_arg (ap
, const void *);
2405 memcpy (data
+ 72, greg
, 192);
2406 memset (data
+ 264, 0, 4);
2408 return elfcore_write_note (abfd
, buf
, bufsiz
,
2409 "CORE", note_type
, data
, sizeof (data
));
2415 ppc_elf_lookup_section_flags (char *flag_name
)
2418 if (!strcmp (flag_name
, "SHF_PPC_VLE"))
2424 /* Return address for Ith PLT stub in section PLT, for relocation REL
2425 or (bfd_vma) -1 if it should not be included. */
2428 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
2429 const asection
*plt ATTRIBUTE_UNUSED
,
2432 return rel
->address
;
2435 /* Handle a PowerPC specific section when reading an object file. This
2436 is called when bfd_section_from_shdr finds a section with an unknown
2440 ppc_elf_section_from_shdr (bfd
*abfd
,
2441 Elf_Internal_Shdr
*hdr
,
2448 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
2451 newsect
= hdr
->bfd_section
;
2452 flags
= bfd_get_section_flags (abfd
, newsect
);
2453 if (hdr
->sh_flags
& SHF_EXCLUDE
)
2454 flags
|= SEC_EXCLUDE
;
2456 if (hdr
->sh_type
== SHT_ORDERED
)
2457 flags
|= SEC_SORT_ENTRIES
;
2459 bfd_set_section_flags (abfd
, newsect
, flags
);
2463 /* Set up any other section flags and such that may be necessary. */
2466 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
2467 Elf_Internal_Shdr
*shdr
,
2470 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
2471 shdr
->sh_type
= SHT_ORDERED
;
2476 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2477 need to bump up the number of section headers. */
2480 ppc_elf_additional_program_headers (bfd
*abfd
,
2481 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2486 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2487 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2490 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2491 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2497 /* Modify the segment map for VLE executables. */
2500 ppc_elf_modify_segment_map (bfd
*abfd
,
2501 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2503 struct elf_segment_map
*m
;
2505 /* At this point in the link, output sections have already been sorted by
2506 LMA and assigned to segments. All that is left to do is to ensure
2507 there is no mixing of VLE & non-VLE sections in a text segment.
2508 If we find that case, we split the segment.
2509 We maintain the original output section order. */
2511 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
2513 struct elf_segment_map
*n
;
2516 unsigned int p_flags
;
2518 if (m
->p_type
!= PT_LOAD
|| m
->count
== 0)
2521 for (p_flags
= PF_R
, j
= 0; j
!= m
->count
; ++j
)
2523 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2525 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2528 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2529 p_flags
|= PF_PPC_VLE
;
2534 while (++j
!= m
->count
)
2536 unsigned int p_flags1
= PF_R
;
2538 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2540 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2543 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2544 p_flags1
|= PF_PPC_VLE
;
2545 if (((p_flags1
^ p_flags
) & PF_PPC_VLE
) != 0)
2548 p_flags
|= p_flags1
;
2550 /* If we're splitting a segment which originally contained rw
2551 sections then those sections might now only be in one of the
2552 two parts. So always set p_flags if splitting, even if we
2553 are being called for objcopy with p_flags_valid set. */
2554 if (j
!= m
->count
|| !m
->p_flags_valid
)
2556 m
->p_flags_valid
= 1;
2557 m
->p_flags
= p_flags
;
2562 /* Sections 0..j-1 stay in this (current) segment,
2563 the remainder are put in a new segment.
2564 The scan resumes with the new segment. */
2566 amt
= sizeof (struct elf_segment_map
);
2567 amt
+= (m
->count
- j
- 1) * sizeof (asection
*);
2568 n
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2572 n
->p_type
= PT_LOAD
;
2573 n
->count
= m
->count
- j
;
2574 for (k
= 0; k
< n
->count
; ++k
)
2575 n
->sections
[k
] = m
->sections
[j
+ k
];
2577 m
->p_size_valid
= 0;
2585 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2586 .PPC.EMB.sbss0 a normal section, and not a bss section so
2587 that the linker doesn't crater when trying to make more than
2590 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
2592 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
2593 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2594 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2595 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2596 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2597 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
2598 { STRING_COMMA_LEN (APUINFO_SECTION_NAME
), 0, SHT_NOTE
, 0 },
2599 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2600 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2601 { NULL
, 0, 0, 0, 0 }
2604 /* This is what we want for new plt/got. */
2605 static struct bfd_elf_special_section ppc_alt_plt
=
2606 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
2608 static const struct bfd_elf_special_section
*
2609 ppc_elf_get_sec_type_attr (bfd
*abfd
, asection
*sec
)
2611 const struct bfd_elf_special_section
*ssect
;
2613 /* See if this is one of the special sections. */
2614 if (sec
->name
== NULL
)
2617 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2621 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2622 ssect
= &ppc_alt_plt
;
2626 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2629 /* Very simple linked list structure for recording apuinfo values. */
2630 typedef struct apuinfo_list
2632 struct apuinfo_list
*next
;
2633 unsigned long value
;
2637 static apuinfo_list
*head
;
2638 static bfd_boolean apuinfo_set
;
2641 apuinfo_list_init (void)
2644 apuinfo_set
= FALSE
;
2648 apuinfo_list_add (unsigned long value
)
2650 apuinfo_list
*entry
= head
;
2652 while (entry
!= NULL
)
2654 if (entry
->value
== value
)
2656 entry
= entry
->next
;
2659 entry
= bfd_malloc (sizeof (* entry
));
2663 entry
->value
= value
;
2669 apuinfo_list_length (void)
2671 apuinfo_list
*entry
;
2672 unsigned long count
;
2674 for (entry
= head
, count
= 0;
2676 entry
= entry
->next
)
2682 static inline unsigned long
2683 apuinfo_list_element (unsigned long number
)
2685 apuinfo_list
* entry
;
2689 entry
= entry
->next
)
2692 return entry
? entry
->value
: 0;
2696 apuinfo_list_finish (void)
2698 apuinfo_list
*entry
;
2700 for (entry
= head
; entry
;)
2702 apuinfo_list
*next
= entry
->next
;
2710 /* Scan the input BFDs and create a linked list of
2711 the APUinfo values that will need to be emitted. */
2714 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2718 char *buffer
= NULL
;
2719 bfd_size_type largest_input_size
= 0;
2721 unsigned long length
;
2722 const char *error_message
= NULL
;
2724 if (link_info
== NULL
)
2727 apuinfo_list_init ();
2729 /* Read in the input sections contents. */
2730 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
2732 unsigned long datum
;
2734 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2738 /* xgettext:c-format */
2739 error_message
= _("corrupt %s section in %B");
2740 length
= asec
->size
;
2745 if (largest_input_size
< asec
->size
)
2749 largest_input_size
= asec
->size
;
2750 buffer
= bfd_malloc (largest_input_size
);
2755 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2756 || (bfd_bread (buffer
, length
, ibfd
) != length
))
2758 /* xgettext:c-format */
2759 error_message
= _("unable to read in %s section from %B");
2763 /* Verify the contents of the header. Note - we have to
2764 extract the values this way in order to allow for a
2765 host whose endian-ness is different from the target. */
2766 datum
= bfd_get_32 (ibfd
, buffer
);
2767 if (datum
!= sizeof APUINFO_LABEL
)
2770 datum
= bfd_get_32 (ibfd
, buffer
+ 8);
2774 if (strcmp (buffer
+ 12, APUINFO_LABEL
) != 0)
2777 /* Get the number of bytes used for apuinfo entries. */
2778 datum
= bfd_get_32 (ibfd
, buffer
+ 4);
2779 if (datum
+ 20 != length
)
2782 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2783 for (i
= 0; i
< datum
; i
+= 4)
2784 apuinfo_list_add (bfd_get_32 (ibfd
, buffer
+ 20 + i
));
2787 error_message
= NULL
;
2791 /* Compute the size of the output section. */
2792 unsigned num_entries
= apuinfo_list_length ();
2794 /* Set the output section size, if it exists. */
2795 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2797 if (asec
&& ! bfd_set_section_size (abfd
, asec
, 20 + num_entries
* 4))
2800 /* xgettext:c-format */
2801 error_message
= _("warning: unable to set size of %s section in %B");
2810 _bfd_error_handler (error_message
, APUINFO_SECTION_NAME
, ibfd
);
2813 /* Prevent the output section from accumulating the input sections'
2814 contents. We have already stored this in our linked list structure. */
2817 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2818 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2820 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2822 return apuinfo_set
&& strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0;
2825 /* Finally we can generate the output section. */
2828 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2833 unsigned num_entries
;
2834 bfd_size_type length
;
2836 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2843 length
= asec
->size
;
2847 buffer
= bfd_malloc (length
);
2851 (_("failed to allocate space for new APUinfo section."));
2855 /* Create the apuinfo header. */
2856 num_entries
= apuinfo_list_length ();
2857 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2858 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2859 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2860 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2863 for (i
= 0; i
< num_entries
; i
++)
2865 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2869 if (length
!= asec
->size
)
2870 _bfd_error_handler (_("failed to compute new APUinfo section."));
2872 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2873 _bfd_error_handler (_("failed to install new APUinfo section."));
2877 apuinfo_list_finish ();
2881 is_nonpic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2883 bfd_byte buf
[3 * 4];
2885 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, sizeof buf
))
2888 return ((bfd_get_32 (abfd
, buf
+ 0) & 0xffff0000) == LIS_11
2889 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2890 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
);
2894 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2896 bfd_vma vma
= *(bfd_vma
*) ptr
;
2897 return ((section
->flags
& SEC_ALLOC
) != 0
2898 && section
->vma
<= vma
2899 && vma
< section
->vma
+ section
->size
);
2903 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2904 long dynsymcount
, asymbol
**dynsyms
,
2907 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2908 asection
*plt
, *relplt
, *dynamic
, *glink
;
2909 bfd_vma glink_vma
= 0;
2910 bfd_vma resolv_vma
= 0;
2914 long count
, i
, stub_delta
;
2921 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2924 if (dynsymcount
<= 0)
2927 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2931 plt
= bfd_get_section_by_name (abfd
, ".plt");
2935 /* Call common code to handle old-style executable PLTs. */
2936 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2937 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2938 dynsymcount
, dynsyms
, ret
);
2940 /* If this object was prelinked, the prelinker stored the address
2941 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2942 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2943 if (dynamic
!= NULL
)
2945 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2947 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2949 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2952 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2953 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2956 extdynend
= extdyn
+ dynamic
->size
;
2957 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2959 Elf_Internal_Dyn dyn
;
2960 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2962 if (dyn
.d_tag
== DT_NULL
)
2965 if (dyn
.d_tag
== DT_PPC_GOT
)
2967 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2968 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2970 && bfd_get_section_contents (abfd
, got
, buf
,
2971 g_o_t
- got
->vma
+ 4, 4))
2972 glink_vma
= bfd_get_32 (abfd
, buf
);
2979 /* Otherwise we read the first plt entry. */
2982 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
2983 glink_vma
= bfd_get_32 (abfd
, buf
);
2989 /* The .glink section usually does not survive the final
2990 link; search for the section (usually .text) where the
2991 glink stubs now reside. */
2992 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
2996 /* Determine glink PLT resolver by reading the relative branch
2997 from the first glink stub. */
2998 if (bfd_get_section_contents (abfd
, glink
, buf
,
2999 glink_vma
- glink
->vma
, 4))
3001 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3003 /* The first glink stub may either branch to the resolver ... */
3005 if ((insn
& ~0x3fffffc) == 0)
3006 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
3008 /* ... or fall through a bunch of NOPs. */
3009 else if ((insn
^ B
^ NOP
) == 0)
3011 bfd_get_section_contents (abfd
, glink
, buf
,
3012 glink_vma
- glink
->vma
+ i
, 4);
3014 if (bfd_get_32 (abfd
, buf
) != NOP
)
3016 resolv_vma
= glink_vma
+ i
;
3021 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
3022 /* If the stubs are those for -shared/-pie then we might have
3023 multiple stubs for each plt entry. If that is the case then
3024 there is no way to associate stubs with their plt entries short
3025 of figuring out the GOT pointer value used in the stub.
3026 The offsets tested here need to cover all possible values of
3027 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3028 stub_off
= glink_vma
- glink
->vma
;
3029 for (stub_delta
= 16; stub_delta
<= 32; stub_delta
+= 8)
3030 if (is_nonpic_glink_stub (abfd
, glink
, stub_off
- stub_delta
))
3032 if (stub_delta
> 32)
3035 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3036 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
3039 size
= count
* sizeof (asymbol
);
3040 p
= relplt
->relocation
;
3041 for (i
= 0; i
< count
; i
++, p
++)
3043 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3045 size
+= sizeof ("+0x") - 1 + 8;
3048 size
+= sizeof (asymbol
) + sizeof ("__glink");
3051 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3053 s
= *ret
= bfd_malloc (size
);
3057 stub_off
= glink_vma
- glink
->vma
;
3058 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
3059 p
= relplt
->relocation
+ count
- 1;
3060 for (i
= 0; i
< count
; i
++)
3064 stub_off
-= stub_delta
;
3065 if (strcmp ((*p
->sym_ptr_ptr
)->name
, "__tls_get_addr_opt") == 0)
3067 *s
= **p
->sym_ptr_ptr
;
3068 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3069 we are defining a symbol, ensure one of them is set. */
3070 if ((s
->flags
& BSF_LOCAL
) == 0)
3071 s
->flags
|= BSF_GLOBAL
;
3072 s
->flags
|= BSF_SYNTHETIC
;
3074 s
->value
= stub_off
;
3077 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3078 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3082 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3083 names
+= sizeof ("+0x") - 1;
3084 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3085 names
+= strlen (names
);
3087 memcpy (names
, "@plt", sizeof ("@plt"));
3088 names
+= sizeof ("@plt");
3093 /* Add a symbol at the start of the glink branch table. */
3094 memset (s
, 0, sizeof *s
);
3096 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3098 s
->value
= glink_vma
- glink
->vma
;
3100 memcpy (names
, "__glink", sizeof ("__glink"));
3101 names
+= sizeof ("__glink");
3107 /* Add a symbol for the glink PLT resolver. */
3108 memset (s
, 0, sizeof *s
);
3110 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3112 s
->value
= resolv_vma
- glink
->vma
;
3114 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3115 names
+= sizeof ("__glink_PLTresolve");
3123 /* The following functions are specific to the ELF linker, while
3124 functions above are used generally. They appear in this file more
3125 or less in the order in which they are called. eg.
3126 ppc_elf_check_relocs is called early in the link process,
3127 ppc_elf_finish_dynamic_sections is one of the last functions
3130 /* Track PLT entries needed for a given symbol. We might need more
3131 than one glink entry per symbol when generating a pic binary. */
3134 struct plt_entry
*next
;
3136 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3137 This field stores the offset into .got2 used to initialise the
3138 GOT pointer reg. It will always be at least 32768. (Current
3139 gcc always uses an offset of 32768, but ld -r will pack .got2
3140 sections together resulting in larger offsets). */
3143 /* The .got2 section. */
3146 /* PLT refcount or offset. */
3149 bfd_signed_vma refcount
;
3153 /* .glink stub offset. */
3154 bfd_vma glink_offset
;
3157 /* Of those relocs that might be copied as dynamic relocs, this
3158 function selects those that must be copied when linking a shared
3159 library or PIE, even when the symbol is local. */
3162 must_be_dyn_reloc (struct bfd_link_info
*info
,
3163 enum elf_ppc_reloc_type r_type
)
3168 /* Only relative relocs can be resolved when the object load
3169 address isn't fixed. DTPREL32 is excluded because the
3170 dynamic linker needs to differentiate global dynamic from
3171 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3176 case R_PPC_REL14_BRTAKEN
:
3177 case R_PPC_REL14_BRNTAKEN
:
3183 case R_PPC_TPREL16_LO
:
3184 case R_PPC_TPREL16_HI
:
3185 case R_PPC_TPREL16_HA
:
3186 /* These relocations are relative but in a shared library the
3187 linker doesn't know the thread pointer base. */
3188 return bfd_link_dll (info
);
3192 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3193 copying dynamic variables from a shared lib into an app's dynbss
3194 section, and instead use a dynamic relocation to point into the
3196 #define ELIMINATE_COPY_RELOCS 1
3198 /* Used to track dynamic relocations for local symbols. */
3199 struct ppc_dyn_relocs
3201 struct ppc_dyn_relocs
*next
;
3203 /* The input section of the reloc. */
3206 /* Total number of relocs copied for the input section. */
3207 unsigned int count
: 31;
3209 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3210 unsigned int ifunc
: 1;
3213 /* PPC ELF linker hash entry. */
3215 struct ppc_elf_link_hash_entry
3217 struct elf_link_hash_entry elf
;
3219 /* If this symbol is used in the linker created sections, the processor
3220 specific backend uses this field to map the field into the offset
3221 from the beginning of the section. */
3222 elf_linker_section_pointers_t
*linker_section_pointer
;
3224 /* Track dynamic relocs copied for this symbol. */
3225 struct elf_dyn_relocs
*dyn_relocs
;
3227 /* Contexts in which symbol is used in the GOT (or TOC).
3228 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3229 corresponding relocs are encountered during check_relocs.
3230 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3231 indicate the corresponding GOT entry type is not needed. */
3232 #define TLS_GD 1 /* GD reloc. */
3233 #define TLS_LD 2 /* LD reloc. */
3234 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3235 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3236 #define TLS_TLS 16 /* Any TLS reloc. */
3237 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3238 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3241 /* Nonzero if we have seen a small data relocation referring to this
3243 unsigned char has_sda_refs
: 1;
3245 /* Flag use of given relocations. */
3246 unsigned char has_addr16_ha
: 1;
3247 unsigned char has_addr16_lo
: 1;
3250 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3252 /* PPC ELF linker hash table. */
3254 struct ppc_elf_link_hash_table
3256 struct elf_link_hash_table elf
;
3258 /* Various options passed from the linker. */
3259 struct ppc_elf_params
*params
;
3261 /* Short-cuts to get to dynamic linker sections. */
3265 elf_linker_section_t sdata
[2];
3267 asection
*glink_eh_frame
;
3269 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3272 /* Shortcut to __tls_get_addr. */
3273 struct elf_link_hash_entry
*tls_get_addr
;
3275 /* The bfd that forced an old-style PLT. */
3278 /* TLS local dynamic got entry handling. */
3280 bfd_signed_vma refcount
;
3284 /* Offset of branch table to PltResolve function in glink. */
3285 bfd_vma glink_pltresolve
;
3287 /* Size of reserved GOT entries. */
3288 unsigned int got_header_size
;
3289 /* Non-zero if allocating the header left a gap. */
3290 unsigned int got_gap
;
3292 /* The type of PLT we have chosen to use. */
3293 enum ppc_elf_plt_type plt_type
;
3295 /* True if the target system is VxWorks. */
3296 unsigned int is_vxworks
:1;
3298 /* Whether there exist local gnu indirect function resolvers,
3299 referenced by dynamic relocations. */
3300 unsigned int local_ifunc_resolver
:1;
3301 unsigned int maybe_local_ifunc_resolver
:1;
3303 /* Set if tls optimization is enabled. */
3304 unsigned int do_tls_opt
:1;
3306 /* The size of PLT entries. */
3308 /* The distance between adjacent PLT slots. */
3310 /* The size of the first PLT entry. */
3311 int plt_initial_entry_size
;
3313 /* Small local sym cache. */
3314 struct sym_cache sym_cache
;
3317 /* Rename some of the generic section flags to better document how they
3318 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3320 /* Nonzero if this section has TLS related relocations. */
3321 #define has_tls_reloc sec_flg0
3323 /* Nonzero if this section has a call to __tls_get_addr. */
3324 #define has_tls_get_addr_call sec_flg1
3326 /* Get the PPC ELF linker hash table from a link_info structure. */
3328 #define ppc_elf_hash_table(p) \
3329 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3330 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3332 /* Create an entry in a PPC ELF linker hash table. */
3334 static struct bfd_hash_entry
*
3335 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3336 struct bfd_hash_table
*table
,
3339 /* Allocate the structure if it has not already been allocated by a
3343 entry
= bfd_hash_allocate (table
,
3344 sizeof (struct ppc_elf_link_hash_entry
));
3349 /* Call the allocation method of the superclass. */
3350 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3353 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
3354 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
3355 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
3356 ppc_elf_hash_entry (entry
)->has_sda_refs
= 0;
3362 /* Create a PPC ELF linker hash table. */
3364 static struct bfd_link_hash_table
*
3365 ppc_elf_link_hash_table_create (bfd
*abfd
)
3367 struct ppc_elf_link_hash_table
*ret
;
3368 static struct ppc_elf_params default_params
3369 = { PLT_OLD
, 0, 1, 0, 1, 0, 0, 12, 0, 0, 0 };
3371 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
3375 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
3376 ppc_elf_link_hash_newfunc
,
3377 sizeof (struct ppc_elf_link_hash_entry
),
3384 ret
->elf
.init_plt_refcount
.refcount
= 0;
3385 ret
->elf
.init_plt_refcount
.glist
= NULL
;
3386 ret
->elf
.init_plt_offset
.offset
= 0;
3387 ret
->elf
.init_plt_offset
.glist
= NULL
;
3389 ret
->params
= &default_params
;
3391 ret
->sdata
[0].name
= ".sdata";
3392 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
3393 ret
->sdata
[0].bss_name
= ".sbss";
3395 ret
->sdata
[1].name
= ".sdata2";
3396 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
3397 ret
->sdata
[1].bss_name
= ".sbss2";
3399 ret
->plt_entry_size
= 12;
3400 ret
->plt_slot_size
= 8;
3401 ret
->plt_initial_entry_size
= 72;
3403 return &ret
->elf
.root
;
3406 /* Hook linker params into hash table. */
3409 ppc_elf_link_params (struct bfd_link_info
*info
, struct ppc_elf_params
*params
)
3411 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3414 htab
->params
= params
;
3415 params
->pagesize_p2
= bfd_log2 (params
->pagesize
);
3418 /* Create .got and the related sections. */
3421 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
3423 struct ppc_elf_link_hash_table
*htab
;
3425 if (!_bfd_elf_create_got_section (abfd
, info
))
3428 htab
= ppc_elf_hash_table (info
);
3429 if (!htab
->is_vxworks
)
3431 /* The powerpc .got has a blrl instruction in it. Mark it
3433 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
3434 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3435 if (!bfd_set_section_flags (abfd
, htab
->elf
.sgot
, flags
))
3442 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3443 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3444 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3447 ppc_elf_create_linker_section (bfd
*abfd
,
3448 struct bfd_link_info
*info
,
3450 elf_linker_section_t
*lsect
)
3454 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3455 | SEC_LINKER_CREATED
);
3457 s
= bfd_make_section_anyway_with_flags (abfd
, lsect
->name
, flags
);
3462 /* Define the sym on the first section of this name. */
3463 s
= bfd_get_section_by_name (abfd
, lsect
->name
);
3465 lsect
->sym
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, lsect
->sym_name
);
3466 if (lsect
->sym
== NULL
)
3468 lsect
->sym
->root
.u
.def
.value
= 0x8000;
3473 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
3475 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3480 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
3481 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3482 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
3484 p2align
= htab
->params
->ppc476_workaround
? 6 : 4;
3485 if (p2align
< htab
->params
->plt_stub_align
)
3486 p2align
= htab
->params
->plt_stub_align
;
3488 || !bfd_set_section_alignment (abfd
, s
, p2align
))
3491 if (!info
->no_ld_generated_unwind_info
)
3493 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3494 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3495 s
= bfd_make_section_anyway_with_flags (abfd
, ".eh_frame", flags
);
3496 htab
->glink_eh_frame
= s
;
3498 || !bfd_set_section_alignment (abfd
, s
, 2))
3502 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
3503 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
3506 || !bfd_set_section_alignment (abfd
, s
, 4))
3509 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3510 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3511 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.iplt", flags
);
3512 htab
->elf
.irelplt
= s
;
3514 || ! bfd_set_section_alignment (abfd
, s
, 2))
3517 if (!ppc_elf_create_linker_section (abfd
, info
, 0,
3521 if (!ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3528 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3529 to output sections (just like _bfd_elf_create_dynamic_sections has
3530 to create .dynbss and .rela.bss). */
3533 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3535 struct ppc_elf_link_hash_table
*htab
;
3539 htab
= ppc_elf_hash_table (info
);
3541 if (htab
->elf
.sgot
== NULL
3542 && !ppc_elf_create_got (abfd
, info
))
3545 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
3548 if (htab
->glink
== NULL
3549 && !ppc_elf_create_glink (abfd
, info
))
3552 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynsbss",
3553 SEC_ALLOC
| SEC_LINKER_CREATED
);
3558 if (! bfd_link_pic (info
))
3560 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3561 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3562 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.sbss", flags
);
3565 || ! bfd_set_section_alignment (abfd
, s
, 2))
3569 if (htab
->is_vxworks
3570 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
3574 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
3575 if (htab
->plt_type
== PLT_VXWORKS
)
3576 /* The VxWorks PLT is a loaded section with contents. */
3577 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3578 return bfd_set_section_flags (abfd
, s
, flags
);
3581 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3584 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3585 struct elf_link_hash_entry
*dir
,
3586 struct elf_link_hash_entry
*ind
)
3588 struct ppc_elf_link_hash_entry
*edir
, *eind
;
3590 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
3591 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
3593 edir
->tls_mask
|= eind
->tls_mask
;
3594 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3596 if (edir
->elf
.versioned
!= versioned_hidden
)
3597 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3598 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3599 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3600 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3601 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3602 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3604 /* If we were called to copy over info for a weak sym, that's all. */
3605 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3608 if (eind
->dyn_relocs
!= NULL
)
3610 if (edir
->dyn_relocs
!= NULL
)
3612 struct elf_dyn_relocs
**pp
;
3613 struct elf_dyn_relocs
*p
;
3615 /* Add reloc counts against the indirect sym to the direct sym
3616 list. Merge any entries against the same section. */
3617 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3619 struct elf_dyn_relocs
*q
;
3621 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3622 if (q
->sec
== p
->sec
)
3624 q
->pc_count
+= p
->pc_count
;
3625 q
->count
+= p
->count
;
3632 *pp
= edir
->dyn_relocs
;
3635 edir
->dyn_relocs
= eind
->dyn_relocs
;
3636 eind
->dyn_relocs
= NULL
;
3639 /* Copy over the GOT refcount entries that we may have already seen to
3640 the symbol which just became indirect. */
3641 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3642 eind
->elf
.got
.refcount
= 0;
3644 /* And plt entries. */
3645 if (eind
->elf
.plt
.plist
!= NULL
)
3647 if (edir
->elf
.plt
.plist
!= NULL
)
3649 struct plt_entry
**entp
;
3650 struct plt_entry
*ent
;
3652 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3654 struct plt_entry
*dent
;
3656 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3657 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3659 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3666 *entp
= edir
->elf
.plt
.plist
;
3669 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3670 eind
->elf
.plt
.plist
= NULL
;
3673 if (eind
->elf
.dynindx
!= -1)
3675 if (edir
->elf
.dynindx
!= -1)
3676 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3677 edir
->elf
.dynstr_index
);
3678 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3679 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3680 eind
->elf
.dynindx
= -1;
3681 eind
->elf
.dynstr_index
= 0;
3685 /* Hook called by the linker routine which adds symbols from an object
3686 file. We use it to put .comm items in .sbss, and not .bss. */
3689 ppc_elf_add_symbol_hook (bfd
*abfd
,
3690 struct bfd_link_info
*info
,
3691 Elf_Internal_Sym
*sym
,
3692 const char **namep ATTRIBUTE_UNUSED
,
3693 flagword
*flagsp ATTRIBUTE_UNUSED
,
3697 if (sym
->st_shndx
== SHN_COMMON
3698 && !bfd_link_relocatable (info
)
3699 && is_ppc_elf (info
->output_bfd
)
3700 && sym
->st_size
<= elf_gp_size (abfd
))
3702 /* Common symbols less than or equal to -G nn bytes are automatically
3704 struct ppc_elf_link_hash_table
*htab
;
3706 htab
= ppc_elf_hash_table (info
);
3707 if (htab
->sbss
== NULL
)
3709 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3711 if (!htab
->elf
.dynobj
)
3712 htab
->elf
.dynobj
= abfd
;
3714 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3717 if (htab
->sbss
== NULL
)
3722 *valp
= sym
->st_size
;
3725 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3726 && (abfd
->flags
& DYNAMIC
) == 0
3727 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
3728 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
3733 /* Find a linker generated pointer with a given addend and type. */
3735 static elf_linker_section_pointers_t
*
3736 elf_find_pointer_linker_section
3737 (elf_linker_section_pointers_t
*linker_pointers
,
3739 elf_linker_section_t
*lsect
)
3741 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3742 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3743 return linker_pointers
;
3748 /* Allocate a pointer to live in a linker created section. */
3751 elf_allocate_pointer_linker_section (bfd
*abfd
,
3752 elf_linker_section_t
*lsect
,
3753 struct elf_link_hash_entry
*h
,
3754 const Elf_Internal_Rela
*rel
)
3756 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3757 elf_linker_section_pointers_t
*linker_section_ptr
;
3758 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3761 BFD_ASSERT (lsect
!= NULL
);
3763 /* Is this a global symbol? */
3766 struct ppc_elf_link_hash_entry
*eh
;
3768 /* Has this symbol already been allocated? If so, our work is done. */
3769 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3770 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3775 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3779 BFD_ASSERT (is_ppc_elf (abfd
));
3781 /* Allocation of a pointer to a local symbol. */
3782 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3784 /* Allocate a table to hold the local symbols if first time. */
3787 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3790 amt
*= sizeof (elf_linker_section_pointers_t
*);
3791 ptr
= bfd_zalloc (abfd
, amt
);
3796 elf_local_ptr_offsets (abfd
) = ptr
;
3799 /* Has this symbol already been allocated? If so, our work is done. */
3800 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3805 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3808 /* Allocate space for a pointer in the linker section, and allocate
3809 a new pointer record from internal memory. */
3810 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3811 amt
= sizeof (elf_linker_section_pointers_t
);
3812 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3814 if (!linker_section_ptr
)
3817 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3818 linker_section_ptr
->addend
= rel
->r_addend
;
3819 linker_section_ptr
->lsect
= lsect
;
3820 *ptr_linker_section_ptr
= linker_section_ptr
;
3822 if (!bfd_set_section_alignment (lsect
->section
->owner
, lsect
->section
, 2))
3824 linker_section_ptr
->offset
= lsect
->section
->size
;
3825 lsect
->section
->size
+= 4;
3829 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3830 lsect
->name
, (long) linker_section_ptr
->offset
,
3831 (long) lsect
->section
->size
);
3837 static struct plt_entry
**
3838 update_local_sym_info (bfd
*abfd
,
3839 Elf_Internal_Shdr
*symtab_hdr
,
3840 unsigned long r_symndx
,
3843 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3844 struct plt_entry
**local_plt
;
3845 char *local_got_tls_masks
;
3847 if (local_got_refcounts
== NULL
)
3849 bfd_size_type size
= symtab_hdr
->sh_info
;
3851 size
*= (sizeof (*local_got_refcounts
)
3852 + sizeof (*local_plt
)
3853 + sizeof (*local_got_tls_masks
));
3854 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3855 if (local_got_refcounts
== NULL
)
3857 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3860 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3861 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3862 local_got_tls_masks
[r_symndx
] |= tls_type
;
3863 if (tls_type
!= PLT_IFUNC
)
3864 local_got_refcounts
[r_symndx
] += 1;
3865 return local_plt
+ r_symndx
;
3869 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3870 asection
*sec
, bfd_vma addend
)
3872 struct plt_entry
*ent
;
3876 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3877 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3881 bfd_size_type amt
= sizeof (*ent
);
3882 ent
= bfd_alloc (abfd
, amt
);
3887 ent
->addend
= addend
;
3888 ent
->plt
.refcount
= 0;
3891 ent
->plt
.refcount
+= 1;
3895 static struct plt_entry
*
3896 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3898 struct plt_entry
*ent
;
3902 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3903 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3909 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3911 return (r_type
== R_PPC_PLTREL24
3912 || r_type
== R_PPC_LOCAL24PC
3913 || r_type
== R_PPC_REL24
3914 || r_type
== R_PPC_REL14
3915 || r_type
== R_PPC_REL14_BRTAKEN
3916 || r_type
== R_PPC_REL14_BRNTAKEN
3917 || r_type
== R_PPC_ADDR24
3918 || r_type
== R_PPC_ADDR14
3919 || r_type
== R_PPC_ADDR14_BRTAKEN
3920 || r_type
== R_PPC_ADDR14_BRNTAKEN
3921 || r_type
== R_PPC_VLE_REL24
);
3925 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3928 /* xgettext:c-format */
3929 (_("%B: relocation %s cannot be used when making a shared object"),
3931 ppc_elf_howto_table
[r_type
]->name
);
3932 bfd_set_error (bfd_error_bad_value
);
3935 /* Look through the relocs for a section during the first phase, and
3936 allocate space in the global offset table or procedure linkage
3940 ppc_elf_check_relocs (bfd
*abfd
,
3941 struct bfd_link_info
*info
,
3943 const Elf_Internal_Rela
*relocs
)
3945 struct ppc_elf_link_hash_table
*htab
;
3946 Elf_Internal_Shdr
*symtab_hdr
;
3947 struct elf_link_hash_entry
**sym_hashes
;
3948 const Elf_Internal_Rela
*rel
;
3949 const Elf_Internal_Rela
*rel_end
;
3950 asection
*got2
, *sreloc
;
3951 struct elf_link_hash_entry
*tga
;
3953 if (bfd_link_relocatable (info
))
3956 /* Don't do anything special with non-loaded, non-alloced sections.
3957 In particular, any relocs in such sections should not affect GOT
3958 and PLT reference counting (ie. we don't allow them to create GOT
3959 or PLT entries), there's no possibility or desire to optimize TLS
3960 relocs, and there's not much point in propagating relocs to shared
3961 libs that the dynamic linker won't relocate. */
3962 if ((sec
->flags
& SEC_ALLOC
) == 0)
3966 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3970 BFD_ASSERT (is_ppc_elf (abfd
));
3972 /* Initialize howto table if not already done. */
3973 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3974 ppc_elf_howto_init ();
3976 htab
= ppc_elf_hash_table (info
);
3977 if (htab
->glink
== NULL
)
3979 if (htab
->elf
.dynobj
== NULL
)
3980 htab
->elf
.dynobj
= abfd
;
3981 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
3984 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3985 FALSE
, FALSE
, TRUE
);
3986 symtab_hdr
= &elf_symtab_hdr (abfd
);
3987 sym_hashes
= elf_sym_hashes (abfd
);
3988 got2
= bfd_get_section_by_name (abfd
, ".got2");
3991 rel_end
= relocs
+ sec
->reloc_count
;
3992 for (rel
= relocs
; rel
< rel_end
; rel
++)
3994 unsigned long r_symndx
;
3995 enum elf_ppc_reloc_type r_type
;
3996 struct elf_link_hash_entry
*h
;
3998 struct plt_entry
**ifunc
;
4000 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4001 if (r_symndx
< symtab_hdr
->sh_info
)
4005 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4006 while (h
->root
.type
== bfd_link_hash_indirect
4007 || h
->root
.type
== bfd_link_hash_warning
)
4008 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4011 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4012 This shows up in particular in an R_PPC_ADDR32 in the eabi
4015 && htab
->elf
.sgot
== NULL
4016 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
4018 if (htab
->elf
.dynobj
== NULL
)
4019 htab
->elf
.dynobj
= abfd
;
4020 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4022 BFD_ASSERT (h
== htab
->elf
.hgot
);
4026 r_type
= ELF32_R_TYPE (rel
->r_info
);
4028 if (h
== NULL
&& !htab
->is_vxworks
)
4030 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4035 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4037 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4038 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4043 /* STT_GNU_IFUNC symbols must have a PLT entry;
4044 In a non-pie executable even when there are
4046 if (!bfd_link_pic (info
)
4047 || is_branch_reloc (r_type
))
4050 if (r_type
== R_PPC_PLTREL24
)
4052 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4053 if (bfd_link_pic (info
))
4054 addend
= rel
->r_addend
;
4056 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
4062 if (!htab
->is_vxworks
4063 && is_branch_reloc (r_type
)
4068 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
4069 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
4070 /* We have a new-style __tls_get_addr call with a marker
4074 /* Mark this section as having an old-style call. */
4075 sec
->has_tls_get_addr_call
= 1;
4082 /* These special tls relocs tie a call to __tls_get_addr with
4083 its parameter symbol. */
4086 case R_PPC_GOT_TLSLD16
:
4087 case R_PPC_GOT_TLSLD16_LO
:
4088 case R_PPC_GOT_TLSLD16_HI
:
4089 case R_PPC_GOT_TLSLD16_HA
:
4090 tls_type
= TLS_TLS
| TLS_LD
;
4093 case R_PPC_GOT_TLSGD16
:
4094 case R_PPC_GOT_TLSGD16_LO
:
4095 case R_PPC_GOT_TLSGD16_HI
:
4096 case R_PPC_GOT_TLSGD16_HA
:
4097 tls_type
= TLS_TLS
| TLS_GD
;
4100 case R_PPC_GOT_TPREL16
:
4101 case R_PPC_GOT_TPREL16_LO
:
4102 case R_PPC_GOT_TPREL16_HI
:
4103 case R_PPC_GOT_TPREL16_HA
:
4104 if (bfd_link_dll (info
))
4105 info
->flags
|= DF_STATIC_TLS
;
4106 tls_type
= TLS_TLS
| TLS_TPREL
;
4109 case R_PPC_GOT_DTPREL16
:
4110 case R_PPC_GOT_DTPREL16_LO
:
4111 case R_PPC_GOT_DTPREL16_HI
:
4112 case R_PPC_GOT_DTPREL16_HA
:
4113 tls_type
= TLS_TLS
| TLS_DTPREL
;
4115 sec
->has_tls_reloc
= 1;
4118 /* GOT16 relocations */
4120 case R_PPC_GOT16_LO
:
4121 case R_PPC_GOT16_HI
:
4122 case R_PPC_GOT16_HA
:
4123 /* This symbol requires a global offset table entry. */
4124 if (htab
->elf
.sgot
== NULL
)
4126 if (htab
->elf
.dynobj
== NULL
)
4127 htab
->elf
.dynobj
= abfd
;
4128 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4133 h
->got
.refcount
+= 1;
4134 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4137 /* This is a global offset table entry for a local symbol. */
4138 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4141 /* We may also need a plt entry if the symbol turns out to be
4143 if (h
!= NULL
&& !bfd_link_pic (info
))
4145 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4150 /* Indirect .sdata relocation. */
4151 case R_PPC_EMB_SDAI16
:
4152 if (bfd_link_pic (info
))
4154 bad_shared_reloc (abfd
, r_type
);
4157 htab
->sdata
[0].sym
->ref_regular
= 1;
4158 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[0],
4163 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4164 h
->non_got_ref
= TRUE
;
4168 /* Indirect .sdata2 relocation. */
4169 case R_PPC_EMB_SDA2I16
:
4170 if (bfd_link_pic (info
))
4172 bad_shared_reloc (abfd
, r_type
);
4175 htab
->sdata
[1].sym
->ref_regular
= 1;
4176 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[1],
4181 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4182 h
->non_got_ref
= TRUE
;
4186 case R_PPC_SDAREL16
:
4187 htab
->sdata
[0].sym
->ref_regular
= 1;
4190 case R_PPC_VLE_SDAREL_LO16A
:
4191 case R_PPC_VLE_SDAREL_LO16D
:
4192 case R_PPC_VLE_SDAREL_HI16A
:
4193 case R_PPC_VLE_SDAREL_HI16D
:
4194 case R_PPC_VLE_SDAREL_HA16A
:
4195 case R_PPC_VLE_SDAREL_HA16D
:
4198 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4199 h
->non_got_ref
= TRUE
;
4203 case R_PPC_VLE_REL8
:
4204 case R_PPC_VLE_REL15
:
4205 case R_PPC_VLE_REL24
:
4206 case R_PPC_VLE_LO16A
:
4207 case R_PPC_VLE_LO16D
:
4208 case R_PPC_VLE_HI16A
:
4209 case R_PPC_VLE_HI16D
:
4210 case R_PPC_VLE_HA16A
:
4211 case R_PPC_VLE_HA16D
:
4212 case R_PPC_VLE_ADDR20
:
4215 case R_PPC_EMB_SDA2REL
:
4216 if (bfd_link_pic (info
))
4218 bad_shared_reloc (abfd
, r_type
);
4221 htab
->sdata
[1].sym
->ref_regular
= 1;
4224 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4225 h
->non_got_ref
= TRUE
;
4229 case R_PPC_VLE_SDA21_LO
:
4230 case R_PPC_VLE_SDA21
:
4231 case R_PPC_EMB_SDA21
:
4232 case R_PPC_EMB_RELSDA
:
4233 if (bfd_link_pic (info
))
4235 bad_shared_reloc (abfd
, r_type
);
4240 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4241 h
->non_got_ref
= TRUE
;
4245 case R_PPC_EMB_NADDR32
:
4246 case R_PPC_EMB_NADDR16
:
4247 case R_PPC_EMB_NADDR16_LO
:
4248 case R_PPC_EMB_NADDR16_HI
:
4249 case R_PPC_EMB_NADDR16_HA
:
4250 if (bfd_link_pic (info
))
4252 bad_shared_reloc (abfd
, r_type
);
4256 h
->non_got_ref
= TRUE
;
4259 case R_PPC_PLTREL24
:
4264 case R_PPC_PLTREL32
:
4265 case R_PPC_PLT16_LO
:
4266 case R_PPC_PLT16_HI
:
4267 case R_PPC_PLT16_HA
:
4269 fprintf (stderr
, "Reloc requires a PLT entry\n");
4271 /* This symbol requires a procedure linkage table entry. */
4276 /* It does not make sense to have a procedure linkage
4277 table entry for a non-ifunc local symbol. */
4278 info
->callbacks
->einfo
4279 /* xgettext:c-format */
4280 (_("%H: %s reloc against local symbol\n"),
4281 abfd
, sec
, rel
->r_offset
,
4282 ppc_elf_howto_table
[r_type
]->name
);
4283 bfd_set_error (bfd_error_bad_value
);
4291 if (r_type
== R_PPC_PLTREL24
)
4293 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4294 if (bfd_link_pic (info
))
4295 addend
= rel
->r_addend
;
4298 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4303 /* The following relocations don't need to propagate the
4304 relocation if linking a shared object since they are
4305 section relative. */
4307 case R_PPC_SECTOFF_LO
:
4308 case R_PPC_SECTOFF_HI
:
4309 case R_PPC_SECTOFF_HA
:
4310 case R_PPC_DTPREL16
:
4311 case R_PPC_DTPREL16_LO
:
4312 case R_PPC_DTPREL16_HI
:
4313 case R_PPC_DTPREL16_HA
:
4318 case R_PPC_REL16_LO
:
4319 case R_PPC_REL16_HI
:
4320 case R_PPC_REL16_HA
:
4321 case R_PPC_REL16DX_HA
:
4322 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4325 /* These are just markers. */
4327 case R_PPC_EMB_MRKREF
:
4331 case R_PPC_RELAX_PLT
:
4332 case R_PPC_RELAX_PLTREL24
:
4336 /* These should only appear in dynamic objects. */
4338 case R_PPC_GLOB_DAT
:
4339 case R_PPC_JMP_SLOT
:
4340 case R_PPC_RELATIVE
:
4341 case R_PPC_IRELATIVE
:
4344 /* These aren't handled yet. We'll report an error later. */
4346 case R_PPC_EMB_RELSEC16
:
4347 case R_PPC_EMB_RELST_LO
:
4348 case R_PPC_EMB_RELST_HI
:
4349 case R_PPC_EMB_RELST_HA
:
4350 case R_PPC_EMB_BIT_FLD
:
4353 /* This refers only to functions defined in the shared library. */
4354 case R_PPC_LOCAL24PC
:
4355 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4357 htab
->plt_type
= PLT_OLD
;
4358 htab
->old_bfd
= abfd
;
4360 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4363 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4368 /* This relocation describes the C++ object vtable hierarchy.
4369 Reconstruct it for later use during GC. */
4370 case R_PPC_GNU_VTINHERIT
:
4371 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4375 /* This relocation describes which C++ vtable entries are actually
4376 used. Record for later use during GC. */
4377 case R_PPC_GNU_VTENTRY
:
4378 BFD_ASSERT (h
!= NULL
);
4380 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4384 /* We shouldn't really be seeing TPREL32. */
4387 case R_PPC_TPREL16_LO
:
4388 case R_PPC_TPREL16_HI
:
4389 case R_PPC_TPREL16_HA
:
4390 if (bfd_link_dll (info
))
4391 info
->flags
|= DF_STATIC_TLS
;
4395 case R_PPC_DTPMOD32
:
4396 case R_PPC_DTPREL32
:
4402 && (sec
->flags
& SEC_CODE
) != 0
4403 && bfd_link_pic (info
)
4404 && htab
->plt_type
== PLT_UNSET
)
4406 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4407 the start of a function, which assembles to a REL32
4408 reference to .got2. If we detect one of these, then
4409 force the old PLT layout because the linker cannot
4410 reliably deduce the GOT pointer value needed for
4413 Elf_Internal_Sym
*isym
;
4415 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4420 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4423 htab
->plt_type
= PLT_OLD
;
4424 htab
->old_bfd
= abfd
;
4427 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4433 case R_PPC_ADDR16_LO
:
4434 case R_PPC_ADDR16_HI
:
4435 case R_PPC_ADDR16_HA
:
4438 if (h
!= NULL
&& !bfd_link_pic (info
))
4440 /* We may need a plt entry if the symbol turns out to be
4441 a function defined in a dynamic object. */
4442 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4445 /* We may need a copy reloc too. */
4447 h
->pointer_equality_needed
= 1;
4448 if (r_type
== R_PPC_ADDR16_HA
)
4449 ppc_elf_hash_entry (h
)->has_addr16_ha
= 1;
4450 if (r_type
== R_PPC_ADDR16_LO
)
4451 ppc_elf_hash_entry (h
)->has_addr16_lo
= 1;
4457 case R_PPC_REL14_BRTAKEN
:
4458 case R_PPC_REL14_BRNTAKEN
:
4461 if (h
== htab
->elf
.hgot
)
4463 if (htab
->plt_type
== PLT_UNSET
)
4465 htab
->plt_type
= PLT_OLD
;
4466 htab
->old_bfd
= abfd
;
4474 case R_PPC_ADDR14_BRTAKEN
:
4475 case R_PPC_ADDR14_BRNTAKEN
:
4476 if (h
!= NULL
&& !bfd_link_pic (info
))
4478 /* We may need a plt entry if the symbol turns out to be
4479 a function defined in a dynamic object. */
4481 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4487 /* If we are creating a shared library, and this is a reloc
4488 against a global symbol, or a non PC relative reloc
4489 against a local symbol, then we need to copy the reloc
4490 into the shared library. However, if we are linking with
4491 -Bsymbolic, we do not need to copy a reloc against a
4492 global symbol which is defined in an object we are
4493 including in the link (i.e., DEF_REGULAR is set). At
4494 this point we have not seen all the input files, so it is
4495 possible that DEF_REGULAR is not set now but will be set
4496 later (it is never cleared). In case of a weak definition,
4497 DEF_REGULAR may be cleared later by a strong definition in
4498 a shared library. We account for that possibility below by
4499 storing information in the dyn_relocs field of the hash
4500 table entry. A similar situation occurs when creating
4501 shared libraries and symbol visibility changes render the
4504 If on the other hand, we are creating an executable, we
4505 may need to keep relocations for symbols satisfied by a
4506 dynamic library if we manage to avoid copy relocs for the
4508 if ((bfd_link_pic (info
)
4509 && (must_be_dyn_reloc (info
, r_type
)
4511 && (!SYMBOLIC_BIND (info
, h
)
4512 || h
->root
.type
== bfd_link_hash_defweak
4513 || !h
->def_regular
))))
4514 || (ELIMINATE_COPY_RELOCS
4515 && !bfd_link_pic (info
)
4517 && (h
->root
.type
== bfd_link_hash_defweak
4518 || !h
->def_regular
)))
4522 "ppc_elf_check_relocs needs to "
4523 "create relocation for %s\n",
4524 (h
&& h
->root
.root
.string
4525 ? h
->root
.root
.string
: "<unknown>"));
4529 if (htab
->elf
.dynobj
== NULL
)
4530 htab
->elf
.dynobj
= abfd
;
4532 sreloc
= _bfd_elf_make_dynamic_reloc_section
4533 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4539 /* If this is a global symbol, we count the number of
4540 relocations we need for this symbol. */
4543 struct elf_dyn_relocs
*p
;
4544 struct elf_dyn_relocs
**rel_head
;
4546 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4548 if (p
== NULL
|| p
->sec
!= sec
)
4550 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4553 p
->next
= *rel_head
;
4560 if (!must_be_dyn_reloc (info
, r_type
))
4565 /* Track dynamic relocs needed for local syms too.
4566 We really need local syms available to do this
4568 struct ppc_dyn_relocs
*p
;
4569 struct ppc_dyn_relocs
**rel_head
;
4570 bfd_boolean is_ifunc
;
4573 Elf_Internal_Sym
*isym
;
4575 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4580 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4584 vpp
= &elf_section_data (s
)->local_dynrel
;
4585 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4586 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4588 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4590 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4592 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4595 p
->next
= *rel_head
;
4598 p
->ifunc
= is_ifunc
;
4612 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4613 and OBFD, and merge non-conflicting ones. */
4615 _bfd_elf_ppc_merge_fp_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4617 bfd
*obfd
= info
->output_bfd
;
4618 obj_attribute
*in_attr
, *in_attrs
;
4619 obj_attribute
*out_attr
, *out_attrs
;
4621 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4622 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4624 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4625 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4627 if (in_attr
->i
!= out_attr
->i
)
4629 int in_fp
= in_attr
->i
& 3;
4630 int out_fp
= out_attr
->i
& 3;
4634 else if (out_fp
== 0)
4637 out_attr
->i
^= in_fp
;
4639 else if (out_fp
!= 2 && in_fp
== 2)
4641 /* xgettext:c-format */
4642 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
4643 else if (out_fp
== 2 && in_fp
!= 2)
4645 /* xgettext:c-format */
4646 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
4647 else if (out_fp
== 1 && in_fp
== 3)
4649 /* xgettext:c-format */
4650 (_("Warning: %B uses double-precision hard float, "
4651 "%B uses single-precision hard float"), obfd
, ibfd
);
4652 else if (out_fp
== 3 && in_fp
== 1)
4654 /* xgettext:c-format */
4655 (_("Warning: %B uses double-precision hard float, "
4656 "%B uses single-precision hard float"), ibfd
, obfd
);
4658 in_fp
= in_attr
->i
& 0xc;
4659 out_fp
= out_attr
->i
& 0xc;
4662 else if (out_fp
== 0)
4665 out_attr
->i
^= in_fp
;
4667 else if (out_fp
!= 2 * 4 && in_fp
== 2 * 4)
4669 /* xgettext:c-format */
4670 (_("Warning: %B uses 64-bit long double, "
4671 "%B uses 128-bit long double"), ibfd
, obfd
);
4672 else if (in_fp
!= 2 * 4 && out_fp
== 2 * 4)
4674 /* xgettext:c-format */
4675 (_("Warning: %B uses 64-bit long double, "
4676 "%B uses 128-bit long double"), obfd
, ibfd
);
4677 else if (out_fp
== 1 * 4 && in_fp
== 3 * 4)
4679 /* xgettext:c-format */
4680 (_("Warning: %B uses IBM long double, "
4681 "%B uses IEEE long double"), ibfd
, obfd
);
4682 else if (out_fp
== 3 * 4 && in_fp
== 1 * 4)
4684 /* xgettext:c-format */
4685 (_("Warning: %B uses IBM long double, "
4686 "%B uses IEEE long double"), obfd
, ibfd
);
4690 /* Merge object attributes from IBFD into OBFD. Warn if
4691 there are conflicting attributes. */
4693 ppc_elf_merge_obj_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4696 obj_attribute
*in_attr
, *in_attrs
;
4697 obj_attribute
*out_attr
, *out_attrs
;
4699 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
4701 obfd
= info
->output_bfd
;
4702 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4703 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4705 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4706 merge non-conflicting ones. */
4707 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4708 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4709 if (in_attr
->i
!= out_attr
->i
)
4711 int in_vec
= in_attr
->i
& 3;
4712 int out_vec
= out_attr
->i
& 3;
4716 else if (out_vec
== 0)
4719 out_attr
->i
= in_vec
;
4721 /* For now, allow generic to transition to AltiVec or SPE
4722 without a warning. If GCC marked files with their stack
4723 alignment and used don't-care markings for files which are
4724 not affected by the vector ABI, we could warn about this
4726 else if (in_vec
== 1)
4728 else if (out_vec
== 1)
4731 out_attr
->i
= in_vec
;
4733 else if (out_vec
< in_vec
)
4735 /* xgettext:c-format */
4736 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4738 else if (out_vec
> in_vec
)
4740 /* xgettext:c-format */
4741 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4745 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4746 and merge non-conflicting ones. */
4747 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4748 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4749 if (in_attr
->i
!= out_attr
->i
)
4751 int in_struct
= in_attr
->i
& 3;
4752 int out_struct
= out_attr
->i
& 3;
4754 if (in_struct
== 0 || in_struct
== 3)
4756 else if (out_struct
== 0)
4759 out_attr
->i
= in_struct
;
4761 else if (out_struct
< in_struct
)
4763 /* xgettext:c-format */
4764 (_("Warning: %B uses r3/r4 for small structure returns, "
4765 "%B uses memory"), obfd
, ibfd
);
4766 else if (out_struct
> in_struct
)
4768 /* xgettext:c-format */
4769 (_("Warning: %B uses r3/r4 for small structure returns, "
4770 "%B uses memory"), ibfd
, obfd
);
4773 /* Merge Tag_compatibility attributes and any common GNU ones. */
4774 _bfd_elf_merge_object_attributes (ibfd
, info
);
4779 /* Merge backend specific data from an object file to the output
4780 object file when linking. */
4783 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4785 bfd
*obfd
= info
->output_bfd
;
4790 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4793 /* Check if we have the same endianness. */
4794 if (! _bfd_generic_verify_endian_match (ibfd
, info
))
4797 if (!ppc_elf_merge_obj_attributes (ibfd
, info
))
4800 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4801 old_flags
= elf_elfheader (obfd
)->e_flags
;
4802 if (!elf_flags_init (obfd
))
4804 /* First call, no flags set. */
4805 elf_flags_init (obfd
) = TRUE
;
4806 elf_elfheader (obfd
)->e_flags
= new_flags
;
4809 /* Compatible flags are ok. */
4810 else if (new_flags
== old_flags
)
4813 /* Incompatible flags. */
4816 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4817 to be linked with either. */
4819 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4820 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4824 (_("%B: compiled with -mrelocatable and linked with "
4825 "modules compiled normally"), ibfd
);
4827 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4828 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4832 (_("%B: compiled normally and linked with "
4833 "modules compiled with -mrelocatable"), ibfd
);
4836 /* The output is -mrelocatable-lib iff both the input files are. */
4837 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4838 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4840 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4841 but each input file is either -mrelocatable or -mrelocatable-lib. */
4842 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4843 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4844 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4845 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4847 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4848 any module uses it. */
4849 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4851 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4852 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4854 /* Warn about any other mismatches. */
4855 if (new_flags
!= old_flags
)
4859 /* xgettext:c-format */
4860 (_("%B: uses different e_flags (%#x) fields "
4861 "than previous modules (%#x)"),
4862 ibfd
, new_flags
, old_flags
);
4867 bfd_set_error (bfd_error_bad_value
);
4876 ppc_elf_vle_split16 (bfd
*input_bfd
,
4877 asection
*input_section
,
4878 unsigned long offset
,
4881 split16_format_type split16_format
,
4884 unsigned int insn
, opcode
, top5
;
4886 insn
= bfd_get_32 (input_bfd
, loc
);
4887 opcode
= insn
& 0xfc00f800;
4888 if (opcode
== E_OR2I_INSN
4889 || opcode
== E_AND2I_DOT_INSN
4890 || opcode
== E_OR2IS_INSN
4891 || opcode
== E_LIS_INSN
4892 || opcode
== E_AND2IS_DOT_INSN
)
4894 if (split16_format
!= split16a_type
)
4897 split16_format
= split16a_type
;
4900 /* xgettext:c-format */
4901 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4902 input_bfd
, input_section
, offset
, opcode
);
4905 else if (opcode
== E_ADD2I_DOT_INSN
4906 || opcode
== E_ADD2IS_INSN
4907 || opcode
== E_CMP16I_INSN
4908 || opcode
== E_MULL2I_INSN
4909 || opcode
== E_CMPL16I_INSN
4910 || opcode
== E_CMPH16I_INSN
4911 || opcode
== E_CMPHL16I_INSN
)
4913 if (split16_format
!= split16d_type
)
4916 split16_format
= split16d_type
;
4919 /* xgettext:c-format */
4920 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4921 input_bfd
, input_section
, offset
, opcode
);
4924 top5
= value
& 0xf800;
4925 top5
= top5
<< (split16_format
== split16a_type
? 5 : 10);
4926 insn
&= (split16_format
== split16a_type
? ~0x1f07ff : ~0x3e007ff);
4928 insn
|= value
& 0x7ff;
4929 bfd_put_32 (input_bfd
, insn
, loc
);
4933 ppc_elf_vle_split20 (bfd
*output_bfd
, bfd_byte
*loc
, bfd_vma value
)
4937 insn
= bfd_get_32 (output_bfd
, loc
);
4938 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4939 /* Top 4 bits of value to 17..20. */
4940 insn
|= (value
& 0xf0000) >> 5;
4941 /* Next 5 bits of the value to 11..15. */
4942 insn
|= (value
& 0xf800) << 5;
4943 /* And the final 11 bits of the value to bits 21 to 31. */
4944 insn
|= value
& 0x7ff;
4945 bfd_put_32 (output_bfd
, insn
, loc
);
4949 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4950 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4952 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4953 struct bfd_link_info
*info
)
4955 struct ppc_elf_link_hash_table
*htab
;
4958 htab
= ppc_elf_hash_table (info
);
4960 if (htab
->plt_type
== PLT_UNSET
)
4962 struct elf_link_hash_entry
*h
;
4964 if (htab
->params
->plt_style
== PLT_OLD
)
4965 htab
->plt_type
= PLT_OLD
;
4966 else if (bfd_link_pic (info
)
4967 && htab
->elf
.dynamic_sections_created
4968 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
4969 FALSE
, FALSE
, TRUE
)) != NULL
4970 && (h
->type
== STT_FUNC
4973 && !(SYMBOL_CALLS_LOCAL (info
, h
)
4974 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
4976 /* Profiling of shared libs (and pies) is not supported with
4977 secure plt, because ppc32 does profiling before a
4978 function prologue and a secure plt pic call stubs needs
4979 r30 to be set up. */
4980 htab
->plt_type
= PLT_OLD
;
4985 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
4987 /* Look through the reloc flags left by ppc_elf_check_relocs.
4988 Use the old style bss plt if a file makes plt calls
4989 without using the new relocs, and if ld isn't given
4990 --secure-plt and we never see REL16 relocs. */
4991 if (plt_type
== PLT_UNSET
)
4993 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
4994 if (is_ppc_elf (ibfd
))
4996 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4998 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
5001 htab
->old_bfd
= ibfd
;
5005 htab
->plt_type
= plt_type
;
5008 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
5010 if (htab
->old_bfd
!= NULL
)
5011 info
->callbacks
->einfo (_("%P: bss-plt forced due to %B\n"),
5014 info
->callbacks
->einfo (_("%P: bss-plt forced by profiling\n"));
5017 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
5019 if (htab
->plt_type
== PLT_NEW
)
5021 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
5022 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
5024 /* The new PLT is a loaded section. */
5025 if (htab
->elf
.splt
!= NULL
5026 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->elf
.splt
, flags
))
5029 /* The new GOT is not executable. */
5030 if (htab
->elf
.sgot
!= NULL
5031 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->elf
.sgot
, flags
))
5036 /* Stop an unused .glink section from affecting .text alignment. */
5037 if (htab
->glink
!= NULL
5038 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
5041 return htab
->plt_type
== PLT_NEW
;
5044 /* Return the section that should be marked against GC for a given
5048 ppc_elf_gc_mark_hook (asection
*sec
,
5049 struct bfd_link_info
*info
,
5050 Elf_Internal_Rela
*rel
,
5051 struct elf_link_hash_entry
*h
,
5052 Elf_Internal_Sym
*sym
)
5055 switch (ELF32_R_TYPE (rel
->r_info
))
5057 case R_PPC_GNU_VTINHERIT
:
5058 case R_PPC_GNU_VTENTRY
:
5062 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5065 /* Set plt output section type, htab->tls_get_addr, and call the
5066 generic ELF tls_setup function. */
5069 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5071 struct ppc_elf_link_hash_table
*htab
;
5073 htab
= ppc_elf_hash_table (info
);
5074 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5075 FALSE
, FALSE
, TRUE
);
5076 if (htab
->plt_type
!= PLT_NEW
)
5077 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5079 if (!htab
->params
->no_tls_get_addr_opt
)
5081 struct elf_link_hash_entry
*opt
, *tga
;
5082 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5083 FALSE
, FALSE
, TRUE
);
5085 && (opt
->root
.type
== bfd_link_hash_defined
5086 || opt
->root
.type
== bfd_link_hash_defweak
))
5088 /* If glibc supports an optimized __tls_get_addr call stub,
5089 signalled by the presence of __tls_get_addr_opt, and we'll
5090 be calling __tls_get_addr via a plt call stub, then
5091 make __tls_get_addr point to __tls_get_addr_opt. */
5092 tga
= htab
->tls_get_addr
;
5093 if (htab
->elf
.dynamic_sections_created
5095 && (tga
->type
== STT_FUNC
5097 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5098 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga
)))
5100 struct plt_entry
*ent
;
5101 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5102 if (ent
->plt
.refcount
> 0)
5106 tga
->root
.type
= bfd_link_hash_indirect
;
5107 tga
->root
.u
.i
.link
= &opt
->root
;
5108 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5110 if (opt
->dynindx
!= -1)
5112 /* Use __tls_get_addr_opt in dynamic relocations. */
5114 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5116 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5119 htab
->tls_get_addr
= opt
;
5124 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5126 if (htab
->plt_type
== PLT_NEW
5127 && htab
->elf
.splt
!= NULL
5128 && htab
->elf
.splt
->output_section
!= NULL
)
5130 elf_section_type (htab
->elf
.splt
->output_section
) = SHT_PROGBITS
;
5131 elf_section_flags (htab
->elf
.splt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5134 return _bfd_elf_tls_setup (obfd
, info
);
5137 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5141 branch_reloc_hash_match (const bfd
*ibfd
,
5142 const Elf_Internal_Rela
*rel
,
5143 const struct elf_link_hash_entry
*hash
)
5145 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5146 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5147 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5149 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5151 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5152 struct elf_link_hash_entry
*h
;
5154 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5155 while (h
->root
.type
== bfd_link_hash_indirect
5156 || h
->root
.type
== bfd_link_hash_warning
)
5157 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5164 /* Run through all the TLS relocs looking for optimization
5168 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5169 struct bfd_link_info
*info
)
5173 struct ppc_elf_link_hash_table
*htab
;
5176 if (!bfd_link_executable (info
))
5179 htab
= ppc_elf_hash_table (info
);
5183 /* Make two passes through the relocs. First time check that tls
5184 relocs involved in setting up a tls_get_addr call are indeed
5185 followed by such a call. If they are not, don't do any tls
5186 optimization. On the second pass twiddle tls_mask flags to
5187 notify relocate_section that optimization can be done, and
5188 adjust got and plt refcounts. */
5189 for (pass
= 0; pass
< 2; ++pass
)
5190 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
5192 Elf_Internal_Sym
*locsyms
= NULL
;
5193 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5194 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5196 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5197 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5199 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5200 int expecting_tls_get_addr
= 0;
5202 /* Read the relocations. */
5203 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5205 if (relstart
== NULL
)
5208 relend
= relstart
+ sec
->reloc_count
;
5209 for (rel
= relstart
; rel
< relend
; rel
++)
5211 enum elf_ppc_reloc_type r_type
;
5212 unsigned long r_symndx
;
5213 struct elf_link_hash_entry
*h
= NULL
;
5215 char tls_set
, tls_clear
;
5216 bfd_boolean is_local
;
5217 bfd_signed_vma
*got_count
;
5219 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5220 if (r_symndx
>= symtab_hdr
->sh_info
)
5222 struct elf_link_hash_entry
**sym_hashes
;
5224 sym_hashes
= elf_sym_hashes (ibfd
);
5225 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5226 while (h
->root
.type
== bfd_link_hash_indirect
5227 || h
->root
.type
== bfd_link_hash_warning
)
5228 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5236 r_type
= ELF32_R_TYPE (rel
->r_info
);
5237 /* If this section has old-style __tls_get_addr calls
5238 without marker relocs, then check that each
5239 __tls_get_addr call reloc is preceded by a reloc
5240 that conceivably belongs to the __tls_get_addr arg
5241 setup insn. If we don't find matching arg setup
5242 relocs, don't do any tls optimization. */
5244 && sec
->has_tls_get_addr_call
5246 && h
== htab
->tls_get_addr
5247 && !expecting_tls_get_addr
5248 && is_branch_reloc (r_type
))
5250 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5251 "TLS optimization disabled\n",
5252 ibfd
, sec
, rel
->r_offset
);
5253 if (elf_section_data (sec
)->relocs
!= relstart
)
5258 expecting_tls_get_addr
= 0;
5261 case R_PPC_GOT_TLSLD16
:
5262 case R_PPC_GOT_TLSLD16_LO
:
5263 expecting_tls_get_addr
= 1;
5266 case R_PPC_GOT_TLSLD16_HI
:
5267 case R_PPC_GOT_TLSLD16_HA
:
5268 /* These relocs should never be against a symbol
5269 defined in a shared lib. Leave them alone if
5270 that turns out to be the case. */
5279 case R_PPC_GOT_TLSGD16
:
5280 case R_PPC_GOT_TLSGD16_LO
:
5281 expecting_tls_get_addr
= 1;
5284 case R_PPC_GOT_TLSGD16_HI
:
5285 case R_PPC_GOT_TLSGD16_HA
:
5291 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5295 case R_PPC_GOT_TPREL16
:
5296 case R_PPC_GOT_TPREL16_LO
:
5297 case R_PPC_GOT_TPREL16_HI
:
5298 case R_PPC_GOT_TPREL16_HA
:
5303 tls_clear
= TLS_TPREL
;
5311 expecting_tls_get_addr
= 2;
5322 if (!expecting_tls_get_addr
5323 || (expecting_tls_get_addr
== 1
5324 && !sec
->has_tls_get_addr_call
))
5327 if (rel
+ 1 < relend
5328 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5329 htab
->tls_get_addr
))
5332 /* Uh oh, we didn't find the expected call. We
5333 could just mark this symbol to exclude it
5334 from tls optimization but it's safer to skip
5335 the entire optimization. */
5336 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5337 "TLS optimization disabled\n"),
5338 ibfd
, sec
, rel
->r_offset
);
5339 if (elf_section_data (sec
)->relocs
!= relstart
)
5344 if (expecting_tls_get_addr
)
5346 struct plt_entry
*ent
;
5349 if (bfd_link_pic (info
)
5350 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5351 addend
= rel
[1].r_addend
;
5352 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5354 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5355 ent
->plt
.refcount
-= 1;
5357 if (expecting_tls_get_addr
== 2)
5363 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5364 got_count
= &h
->got
.refcount
;
5368 bfd_signed_vma
*lgot_refs
;
5369 struct plt_entry
**local_plt
;
5372 if (locsyms
== NULL
)
5374 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5375 if (locsyms
== NULL
)
5376 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5377 symtab_hdr
->sh_info
,
5378 0, NULL
, NULL
, NULL
);
5379 if (locsyms
== NULL
)
5381 if (elf_section_data (sec
)->relocs
!= relstart
)
5386 lgot_refs
= elf_local_got_refcounts (ibfd
);
5387 if (lgot_refs
== NULL
)
5389 local_plt
= (struct plt_entry
**)
5390 (lgot_refs
+ symtab_hdr
->sh_info
);
5391 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
5392 tls_mask
= &lgot_masks
[r_symndx
];
5393 got_count
= &lgot_refs
[r_symndx
];
5398 /* We managed to get rid of a got entry. */
5403 *tls_mask
|= tls_set
;
5404 *tls_mask
&= ~tls_clear
;
5407 if (elf_section_data (sec
)->relocs
!= relstart
)
5412 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
5414 if (!info
->keep_memory
)
5417 symtab_hdr
->contents
= (unsigned char *) locsyms
;
5420 htab
->do_tls_opt
= 1;
5424 /* Find dynamic relocs for H that apply to read-only sections. */
5427 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5429 struct elf_dyn_relocs
*p
;
5431 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5433 asection
*s
= p
->sec
->output_section
;
5435 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5441 /* Return true if we have dynamic relocs against H or any of its weak
5442 aliases, that apply to read-only sections. Cannot be used after
5443 size_dynamic_sections. */
5446 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5448 struct ppc_elf_link_hash_entry
*eh
= ppc_elf_hash_entry (h
);
5451 if (readonly_dynrelocs (&eh
->elf
))
5453 eh
= ppc_elf_hash_entry (eh
->elf
.u
.alias
);
5454 } while (eh
!= NULL
&& &eh
->elf
!= h
);
5459 /* Return whether H has pc-relative dynamic relocs. */
5462 pc_dynrelocs (struct elf_link_hash_entry
*h
)
5464 struct elf_dyn_relocs
*p
;
5466 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5467 if (p
->pc_count
!= 0)
5472 /* Adjust a symbol defined by a dynamic object and referenced by a
5473 regular object. The current definition is in some section of the
5474 dynamic object, but we're not including those sections. We have to
5475 change the definition to something the rest of the link can
5479 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5480 struct elf_link_hash_entry
*h
)
5482 struct ppc_elf_link_hash_table
*htab
;
5486 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5487 h
->root
.root
.string
);
5490 /* Make sure we know what is going on here. */
5491 htab
= ppc_elf_hash_table (info
);
5492 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5494 || h
->type
== STT_GNU_IFUNC
5498 && !h
->def_regular
)));
5500 /* Deal with function syms. */
5501 if (h
->type
== STT_FUNC
5502 || h
->type
== STT_GNU_IFUNC
5505 bfd_boolean local
= (SYMBOL_CALLS_LOCAL (info
, h
)
5506 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
5507 /* Discard dyn_relocs when non-pic if we've decided that a
5508 function symbol is local. */
5509 if (!bfd_link_pic (info
) && local
)
5510 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5512 /* Clear procedure linkage table information for any symbol that
5513 won't need a .plt entry. */
5514 struct plt_entry
*ent
;
5515 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5516 if (ent
->plt
.refcount
> 0)
5519 || (h
->type
!= STT_GNU_IFUNC
&& local
))
5521 /* A PLT entry is not required/allowed when:
5523 1. We are not using ld.so; because then the PLT entry
5524 can't be set up, so we can't use one. In this case,
5525 ppc_elf_adjust_dynamic_symbol won't even be called.
5527 2. GC has rendered the entry unused.
5529 3. We know for certain that a call to this symbol
5530 will go to this object, or will remain undefined. */
5531 h
->plt
.plist
= NULL
;
5533 h
->pointer_equality_needed
= 0;
5537 /* Taking a function's address in a read/write section
5538 doesn't require us to define the function symbol in the
5539 executable on a plt call stub. A dynamic reloc can
5540 be used instead, giving better runtime performance.
5541 (Calls via that function pointer don't need to bounce
5542 through the plt call stub.) Similarly, use a dynamic
5543 reloc for a weak reference when possible, allowing the
5544 resolution of the symbol to be set at load time rather
5546 if ((h
->pointer_equality_needed
5548 && !h
->ref_regular_nonweak
5549 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
5550 && !htab
->is_vxworks
5551 && !ppc_elf_hash_entry (h
)->has_sda_refs
5552 && !readonly_dynrelocs (h
))
5554 h
->pointer_equality_needed
= 0;
5555 /* If we haven't seen a branch reloc then we don't need
5558 h
->plt
.plist
= NULL
;
5560 else if (!bfd_link_pic (info
))
5561 /* We are going to be defining the function symbol on the
5562 plt stub, so no dyn_relocs needed when non-pic. */
5563 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5565 h
->protected_def
= 0;
5566 /* Function symbols can't have copy relocs. */
5570 h
->plt
.plist
= NULL
;
5572 /* If this is a weak symbol, and there is a real definition, the
5573 processor independent code will have arranged for us to see the
5574 real definition first, and we can just use the same value. */
5575 if (h
->is_weakalias
)
5577 struct elf_link_hash_entry
*def
= weakdef (h
);
5578 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
5579 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
5580 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
5581 if (def
->root
.u
.def
.section
== htab
->elf
.sdynbss
5582 || def
->root
.u
.def
.section
== htab
->elf
.sdynrelro
5583 || def
->root
.u
.def
.section
== htab
->dynsbss
)
5584 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5588 /* This is a reference to a symbol defined by a dynamic object which
5589 is not a function. */
5591 /* If we are creating a shared library, we must presume that the
5592 only references to the symbol are via the global offset table.
5593 For such cases we need not do anything here; the relocations will
5594 be handled correctly by relocate_section. */
5595 if (bfd_link_pic (info
))
5597 h
->protected_def
= 0;
5601 /* If there are no references to this symbol that do not use the
5602 GOT, we don't need to generate a copy reloc. */
5603 if (!h
->non_got_ref
)
5605 h
->protected_def
= 0;
5609 /* Protected variables do not work with .dynbss. The copy in
5610 .dynbss won't be used by the shared library with the protected
5611 definition for the variable. Editing to PIC, or text relocations
5612 are preferable to an incorrect program. */
5613 if (h
->protected_def
)
5615 if (ELIMINATE_COPY_RELOCS
5616 && ppc_elf_hash_entry (h
)->has_addr16_ha
5617 && ppc_elf_hash_entry (h
)->has_addr16_lo
5618 && htab
->params
->pic_fixup
== 0
5619 && info
->disable_target_specific_optimizations
<= 1)
5620 htab
->params
->pic_fixup
= 1;
5624 /* If -z nocopyreloc was given, we won't generate them either. */
5625 if (info
->nocopyreloc
)
5628 /* If we don't find any dynamic relocs in read-only sections, then
5629 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5630 We can't do this if there are any small data relocations. This
5631 doesn't work on VxWorks, where we can not have dynamic
5632 relocations (other than copy and jump slot relocations) in an
5634 if (ELIMINATE_COPY_RELOCS
5635 && !ppc_elf_hash_entry (h
)->has_sda_refs
5636 && !htab
->is_vxworks
5638 && !alias_readonly_dynrelocs (h
))
5641 /* We must allocate the symbol in our .dynbss section, which will
5642 become part of the .bss section of the executable. There will be
5643 an entry for this symbol in the .dynsym section. The dynamic
5644 object will contain position independent code, so all references
5645 from the dynamic object to this symbol will go through the global
5646 offset table. The dynamic linker will use the .dynsym entry to
5647 determine the address it must put in the global offset table, so
5648 both the dynamic object and the regular object will refer to the
5649 same memory location for the variable.
5651 Of course, if the symbol is referenced using SDAREL relocs, we
5652 must instead allocate it in .sbss. */
5653 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5655 else if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
5656 s
= htab
->elf
.sdynrelro
;
5658 s
= htab
->elf
.sdynbss
;
5659 BFD_ASSERT (s
!= NULL
);
5661 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5665 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5666 linker to copy the initial value out of the dynamic object
5667 and into the runtime process image. */
5668 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5669 srel
= htab
->relsbss
;
5670 else if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
5671 srel
= htab
->elf
.sreldynrelro
;
5673 srel
= htab
->elf
.srelbss
;
5674 BFD_ASSERT (srel
!= NULL
);
5675 srel
->size
+= sizeof (Elf32_External_Rela
);
5679 /* We no longer want dyn_relocs. */
5680 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5681 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
5684 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5685 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5686 specifying the addend on the plt relocation. For -fpic code, the sym
5687 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5688 xxxxxxxx.got2.plt_pic32.<callee>. */
5691 add_stub_sym (struct plt_entry
*ent
,
5692 struct elf_link_hash_entry
*h
,
5693 struct bfd_link_info
*info
)
5695 struct elf_link_hash_entry
*sh
;
5696 size_t len1
, len2
, len3
;
5699 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5701 if (bfd_link_pic (info
))
5702 stub
= ".plt_pic32.";
5704 stub
= ".plt_call32.";
5706 len1
= strlen (h
->root
.root
.string
);
5707 len2
= strlen (stub
);
5710 len3
= strlen (ent
->sec
->name
);
5711 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5714 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5716 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5717 memcpy (name
+ 8 + len3
, stub
, len2
);
5718 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5719 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5722 if (sh
->root
.type
== bfd_link_hash_new
)
5724 sh
->root
.type
= bfd_link_hash_defined
;
5725 sh
->root
.u
.def
.section
= htab
->glink
;
5726 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5727 sh
->ref_regular
= 1;
5728 sh
->def_regular
= 1;
5729 sh
->ref_regular_nonweak
= 1;
5730 sh
->forced_local
= 1;
5732 sh
->root
.linker_def
= 1;
5737 /* Allocate NEED contiguous space in .got, and return the offset.
5738 Handles allocation of the got header when crossing 32k. */
5741 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5744 unsigned int max_before_header
;
5746 if (htab
->plt_type
== PLT_VXWORKS
)
5748 where
= htab
->elf
.sgot
->size
;
5749 htab
->elf
.sgot
->size
+= need
;
5753 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5754 if (need
<= htab
->got_gap
)
5756 where
= max_before_header
- htab
->got_gap
;
5757 htab
->got_gap
-= need
;
5761 if (htab
->elf
.sgot
->size
+ need
> max_before_header
5762 && htab
->elf
.sgot
->size
<= max_before_header
)
5764 htab
->got_gap
= max_before_header
- htab
->elf
.sgot
->size
;
5765 htab
->elf
.sgot
->size
= max_before_header
+ htab
->got_header_size
;
5767 where
= htab
->elf
.sgot
->size
;
5768 htab
->elf
.sgot
->size
+= need
;
5774 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5775 TLS_LD is excluded because those go in a special GOT slot. */
5777 static inline unsigned int
5778 got_entries_needed (int tls_mask
)
5781 if ((tls_mask
& TLS_TLS
) == 0)
5786 if ((tls_mask
& TLS_GD
) != 0)
5788 if ((tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5790 if ((tls_mask
& TLS_DTPREL
) != 0)
5796 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5797 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5800 static inline unsigned int
5801 got_relocs_needed (int tls_mask
, unsigned int need
, bfd_boolean known
)
5803 /* All the entries we allocated need relocs.
5804 Except IE in executable with a local symbol. We could also omit
5805 the DTPREL reloc on the second word of a GD entry under the same
5806 condition as that for IE, but ld.so needs to differentiate
5807 LD and GD entries. */
5808 if ((tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0 && known
)
5810 return need
* sizeof (Elf32_External_Rela
) / 4;
5813 /* If H is undefined, make it dynamic if that makes sense. */
5816 ensure_undef_dynamic (struct bfd_link_info
*info
,
5817 struct elf_link_hash_entry
*h
)
5819 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5821 if (htab
->dynamic_sections_created
5822 && ((info
->dynamic_undefined_weak
!= 0
5823 && h
->root
.type
== bfd_link_hash_undefweak
)
5824 || h
->root
.type
== bfd_link_hash_undefined
)
5827 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
5828 return bfd_elf_link_record_dynamic_symbol (info
, h
);
5832 /* Allocate space in associated reloc sections for dynamic relocs. */
5835 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5837 struct bfd_link_info
*info
= inf
;
5838 struct ppc_elf_link_hash_entry
*eh
;
5839 struct ppc_elf_link_hash_table
*htab
;
5840 struct elf_dyn_relocs
*p
;
5843 if (h
->root
.type
== bfd_link_hash_indirect
)
5846 htab
= ppc_elf_hash_table (info
);
5847 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5848 if (eh
->elf
.got
.refcount
> 0
5849 || (ELIMINATE_COPY_RELOCS
5850 && !eh
->elf
.def_regular
5851 && eh
->elf
.protected_def
5852 && eh
->has_addr16_ha
5853 && eh
->has_addr16_lo
5854 && htab
->params
->pic_fixup
> 0))
5858 /* Make sure this symbol is output as a dynamic symbol. */
5859 if (!ensure_undef_dynamic (info
, &eh
->elf
))
5863 if ((eh
->tls_mask
& TLS_LD
) != 0)
5865 if (!eh
->elf
.def_dynamic
)
5866 /* We'll just use htab->tlsld_got.offset. This should
5867 always be the case. It's a little odd if we have
5868 a local dynamic reloc against a non-local symbol. */
5869 htab
->tlsld_got
.refcount
+= 1;
5873 need
+= got_entries_needed (eh
->tls_mask
);
5875 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5878 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5879 if ((bfd_link_pic (info
)
5880 || (htab
->elf
.dynamic_sections_created
5881 && eh
->elf
.dynindx
!= -1
5882 && !SYMBOL_REFERENCES_LOCAL (info
, &eh
->elf
)))
5883 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &eh
->elf
))
5886 bfd_boolean tprel_known
= (bfd_link_executable (info
)
5887 && SYMBOL_REFERENCES_LOCAL (info
,
5890 need
= got_relocs_needed (eh
->tls_mask
, need
, tprel_known
);
5891 if ((eh
->tls_mask
& TLS_LD
) != 0 && eh
->elf
.def_dynamic
)
5892 need
-= sizeof (Elf32_External_Rela
);
5893 rsec
= htab
->elf
.srelgot
;
5894 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5895 rsec
= htab
->elf
.irelplt
;
5901 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5903 /* If no dynamic sections we can't have dynamic relocs, except for
5904 IFUNCs which are handled even in static executables. */
5905 if (!htab
->elf
.dynamic_sections_created
5906 && h
->type
!= STT_GNU_IFUNC
)
5907 eh
->dyn_relocs
= NULL
;
5909 /* Discard relocs on undefined symbols that must be local. */
5910 else if (h
->root
.type
== bfd_link_hash_undefined
5911 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
5912 eh
->dyn_relocs
= NULL
;
5914 /* Also discard relocs on undefined weak syms with non-default
5915 visibility, or when dynamic_undefined_weak says so. */
5916 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
5917 eh
->dyn_relocs
= NULL
;
5919 if (eh
->dyn_relocs
== NULL
)
5922 /* In the shared -Bsymbolic case, discard space allocated for
5923 dynamic pc-relative relocs against symbols which turn out to be
5924 defined in regular objects. For the normal shared case, discard
5925 space for relocs that have become local due to symbol visibility
5927 else if (bfd_link_pic (info
))
5929 /* Relocs that use pc_count are those that appear on a call insn,
5930 or certain REL relocs (see must_be_dyn_reloc) that can be
5931 generated via assembly. We want calls to protected symbols to
5932 resolve directly to the function rather than going via the plt.
5933 If people want function pointer comparisons to work as expected
5934 then they should avoid writing weird assembly. */
5935 if (SYMBOL_CALLS_LOCAL (info
, h
))
5937 struct elf_dyn_relocs
**pp
;
5939 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5941 p
->count
-= p
->pc_count
;
5950 if (htab
->is_vxworks
)
5952 struct elf_dyn_relocs
**pp
;
5954 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5956 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
5963 if (eh
->dyn_relocs
!= NULL
)
5965 /* Make sure this symbol is output as a dynamic symbol. */
5966 if (!ensure_undef_dynamic (info
, h
))
5970 else if (ELIMINATE_COPY_RELOCS
)
5972 /* For the non-pic case, discard space for relocs against
5973 symbols which turn out to need copy relocs or are not
5975 if (h
->dynamic_adjusted
5977 && !ELF_COMMON_DEF_P (h
)
5978 && !(h
->protected_def
5979 && eh
->has_addr16_ha
5980 && eh
->has_addr16_lo
5981 && htab
->params
->pic_fixup
> 0))
5983 /* Make sure this symbol is output as a dynamic symbol. */
5984 if (!ensure_undef_dynamic (info
, h
))
5987 if (h
->dynindx
== -1)
5988 eh
->dyn_relocs
= NULL
;
5991 eh
->dyn_relocs
= NULL
;
5994 /* Allocate space. */
5995 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5997 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5998 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5999 sreloc
= htab
->elf
.irelplt
;
6000 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6003 /* Handle PLT relocs. Done last, after dynindx has settled. */
6004 dyn
= htab
->elf
.dynamic_sections_created
&& h
->dynindx
!= -1;
6005 if (dyn
|| h
->type
== STT_GNU_IFUNC
)
6007 struct plt_entry
*ent
;
6008 bfd_boolean doneone
= FALSE
;
6009 bfd_vma plt_offset
= 0, glink_offset
= 0;
6011 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6012 if (ent
->plt
.refcount
> 0)
6014 asection
*s
= htab
->elf
.splt
;
6019 if (htab
->plt_type
== PLT_NEW
|| !dyn
)
6023 plt_offset
= s
->size
;
6026 ent
->plt
.offset
= plt_offset
;
6029 if (!doneone
|| bfd_link_pic (info
))
6031 glink_offset
= s
->size
;
6032 s
->size
+= GLINK_ENTRY_SIZE (htab
, h
);
6035 && !bfd_link_pic (info
)
6039 h
->root
.u
.def
.section
= s
;
6040 h
->root
.u
.def
.value
= glink_offset
;
6042 ent
->glink_offset
= glink_offset
;
6044 if (htab
->params
->emit_stub_syms
6045 && !add_stub_sym (ent
, h
, info
))
6052 /* If this is the first .plt entry, make room
6053 for the special first entry. */
6055 s
->size
+= htab
->plt_initial_entry_size
;
6057 /* The PowerPC PLT is actually composed of two
6058 parts, the first part is 2 words (for a load
6059 and a jump), and then there is a remaining
6060 word available at the end. */
6061 plt_offset
= (htab
->plt_initial_entry_size
6062 + (htab
->plt_slot_size
6064 - htab
->plt_initial_entry_size
)
6065 / htab
->plt_entry_size
)));
6067 /* If this symbol is not defined in a regular
6068 file, and we are not generating a shared
6069 library, then set the symbol to this location
6070 in the .plt. This is to avoid text
6071 relocations, and is required to make
6072 function pointers compare as equal between
6073 the normal executable and the shared library. */
6074 if (! bfd_link_pic (info
)
6078 h
->root
.u
.def
.section
= s
;
6079 h
->root
.u
.def
.value
= plt_offset
;
6082 /* Make room for this entry. */
6083 s
->size
+= htab
->plt_entry_size
;
6084 /* After the 8192nd entry, room for two entries
6086 if (htab
->plt_type
== PLT_OLD
6087 && (s
->size
- htab
->plt_initial_entry_size
)
6088 / htab
->plt_entry_size
6089 > PLT_NUM_SINGLE_ENTRIES
)
6090 s
->size
+= htab
->plt_entry_size
;
6092 ent
->plt
.offset
= plt_offset
;
6095 /* We also need to make an entry in the .rela.plt section. */
6099 htab
->elf
.irelplt
->size
+= sizeof (Elf32_External_Rela
);
6102 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
6104 if (htab
->plt_type
== PLT_VXWORKS
)
6106 /* Allocate space for the unloaded relocations. */
6107 if (!bfd_link_pic (info
)
6108 && htab
->elf
.dynamic_sections_created
)
6111 == (bfd_vma
) htab
->plt_initial_entry_size
)
6113 htab
->srelplt2
->size
6114 += (sizeof (Elf32_External_Rela
)
6115 * VXWORKS_PLTRESOLVE_RELOCS
);
6118 htab
->srelplt2
->size
6119 += (sizeof (Elf32_External_Rela
)
6120 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
6123 /* Every PLT entry has an associated GOT entry in
6125 htab
->elf
.sgotplt
->size
+= 4;
6132 ent
->plt
.offset
= (bfd_vma
) -1;
6136 h
->plt
.plist
= NULL
;
6142 h
->plt
.plist
= NULL
;
6149 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6150 read-only sections. */
6153 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
6157 if (h
->root
.type
== bfd_link_hash_indirect
)
6160 sec
= readonly_dynrelocs (h
);
6163 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
6165 info
->flags
|= DF_TEXTREL
;
6166 info
->callbacks
->minfo
6167 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
6168 sec
->owner
, h
->root
.root
.string
, sec
);
6170 /* Not an error, just cut short the traversal. */
6176 static const unsigned char glink_eh_frame_cie
[] =
6178 0, 0, 0, 16, /* length. */
6179 0, 0, 0, 0, /* id. */
6180 1, /* CIE version. */
6181 'z', 'R', 0, /* Augmentation string. */
6182 4, /* Code alignment. */
6183 0x7c, /* Data alignment. */
6185 1, /* Augmentation size. */
6186 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6187 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6190 /* Set the sizes of the dynamic sections. */
6193 ppc_elf_size_dynamic_sections (bfd
*output_bfd
,
6194 struct bfd_link_info
*info
)
6196 struct ppc_elf_link_hash_table
*htab
;
6202 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6205 htab
= ppc_elf_hash_table (info
);
6206 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6208 if (elf_hash_table (info
)->dynamic_sections_created
)
6210 /* Set the contents of the .interp section to the interpreter. */
6211 if (bfd_link_executable (info
) && !info
->nointerp
)
6213 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6214 BFD_ASSERT (s
!= NULL
);
6215 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6216 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6220 if (htab
->plt_type
== PLT_OLD
)
6221 htab
->got_header_size
= 16;
6222 else if (htab
->plt_type
== PLT_NEW
)
6223 htab
->got_header_size
= 12;
6225 /* Set up .got offsets for local syms, and space for local dynamic
6227 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
6229 bfd_signed_vma
*local_got
;
6230 bfd_signed_vma
*end_local_got
;
6231 struct plt_entry
**local_plt
;
6232 struct plt_entry
**end_local_plt
;
6234 bfd_size_type locsymcount
;
6235 Elf_Internal_Shdr
*symtab_hdr
;
6237 if (!is_ppc_elf (ibfd
))
6240 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6242 struct ppc_dyn_relocs
*p
;
6244 for (p
= ((struct ppc_dyn_relocs
*)
6245 elf_section_data (s
)->local_dynrel
);
6249 if (!bfd_is_abs_section (p
->sec
)
6250 && bfd_is_abs_section (p
->sec
->output_section
))
6252 /* Input section has been discarded, either because
6253 it is a copy of a linkonce section or due to
6254 linker script /DISCARD/, so we'll be discarding
6257 else if (htab
->is_vxworks
6258 && strcmp (p
->sec
->output_section
->name
,
6261 /* Relocations in vxworks .tls_vars sections are
6262 handled specially by the loader. */
6264 else if (p
->count
!= 0)
6266 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6268 sreloc
= htab
->elf
.irelplt
;
6269 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6270 if ((p
->sec
->output_section
->flags
6271 & (SEC_READONLY
| SEC_ALLOC
))
6272 == (SEC_READONLY
| SEC_ALLOC
))
6274 info
->flags
|= DF_TEXTREL
;
6275 info
->callbacks
->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
6276 p
->sec
->owner
, p
->sec
);
6282 local_got
= elf_local_got_refcounts (ibfd
);
6286 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6287 locsymcount
= symtab_hdr
->sh_info
;
6288 end_local_got
= local_got
+ locsymcount
;
6289 local_plt
= (struct plt_entry
**) end_local_got
;
6290 end_local_plt
= local_plt
+ locsymcount
;
6291 lgot_masks
= (char *) end_local_plt
;
6293 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6297 if ((*lgot_masks
& TLS_LD
) != 0)
6298 htab
->tlsld_got
.refcount
+= 1;
6299 need
= got_entries_needed (*lgot_masks
);
6301 *local_got
= (bfd_vma
) -1;
6304 *local_got
= allocate_got (htab
, need
);
6305 if (bfd_link_pic (info
))
6308 bfd_boolean tprel_known
= bfd_link_executable (info
);
6310 need
= got_relocs_needed (*lgot_masks
, need
, tprel_known
);
6311 srel
= htab
->elf
.srelgot
;
6312 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6313 srel
= htab
->elf
.irelplt
;
6319 *local_got
= (bfd_vma
) -1;
6321 if (htab
->is_vxworks
)
6324 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6325 for (; local_plt
< end_local_plt
; ++local_plt
)
6327 struct plt_entry
*ent
;
6328 bfd_boolean doneone
= FALSE
;
6329 bfd_vma plt_offset
= 0, glink_offset
= 0;
6331 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6332 if (ent
->plt
.refcount
> 0)
6338 plt_offset
= s
->size
;
6341 ent
->plt
.offset
= plt_offset
;
6344 if (!doneone
|| bfd_link_pic (info
))
6346 glink_offset
= s
->size
;
6347 s
->size
+= GLINK_ENTRY_SIZE (htab
, NULL
);
6349 ent
->glink_offset
= glink_offset
;
6353 htab
->elf
.irelplt
->size
+= sizeof (Elf32_External_Rela
);
6358 ent
->plt
.offset
= (bfd_vma
) -1;
6362 /* Allocate space for global sym dynamic relocs. */
6363 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6365 if (htab
->tlsld_got
.refcount
> 0)
6367 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6368 if (bfd_link_pic (info
))
6369 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
6372 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6374 if (htab
->elf
.sgot
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6376 unsigned int g_o_t
= 32768;
6378 /* If we haven't allocated the header, do so now. When we get here,
6379 for old plt/got the got size will be 0 to 32764 (not allocated),
6380 or 32780 to 65536 (header allocated). For new plt/got, the
6381 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6382 if (htab
->elf
.sgot
->size
<= 32768)
6384 g_o_t
= htab
->elf
.sgot
->size
;
6385 if (htab
->plt_type
== PLT_OLD
)
6387 htab
->elf
.sgot
->size
+= htab
->got_header_size
;
6390 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6392 if (bfd_link_pic (info
))
6394 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6396 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6397 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6399 if (info
->emitrelocations
)
6401 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6403 if (sda
!= NULL
&& sda
->ref_regular
)
6404 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6405 sda
= htab
->sdata
[1].sym
;
6406 if (sda
!= NULL
&& sda
->ref_regular
)
6407 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6410 if (htab
->glink
!= NULL
6411 && htab
->glink
->size
!= 0
6412 && htab
->elf
.dynamic_sections_created
)
6414 htab
->glink_pltresolve
= htab
->glink
->size
;
6415 /* Space for the branch table. */
6417 += htab
->elf
.srelplt
->size
/ (sizeof (Elf32_External_Rela
) / 4) - 4;
6418 /* Pad out to align the start of PLTresolve. */
6419 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6421 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6423 if (htab
->params
->emit_stub_syms
)
6425 struct elf_link_hash_entry
*sh
;
6426 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6427 TRUE
, FALSE
, FALSE
);
6430 if (sh
->root
.type
== bfd_link_hash_new
)
6432 sh
->root
.type
= bfd_link_hash_defined
;
6433 sh
->root
.u
.def
.section
= htab
->glink
;
6434 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6435 sh
->ref_regular
= 1;
6436 sh
->def_regular
= 1;
6437 sh
->ref_regular_nonweak
= 1;
6438 sh
->forced_local
= 1;
6440 sh
->root
.linker_def
= 1;
6442 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6443 TRUE
, FALSE
, FALSE
);
6446 if (sh
->root
.type
== bfd_link_hash_new
)
6448 sh
->root
.type
= bfd_link_hash_defined
;
6449 sh
->root
.u
.def
.section
= htab
->glink
;
6450 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6451 sh
->ref_regular
= 1;
6452 sh
->def_regular
= 1;
6453 sh
->ref_regular_nonweak
= 1;
6454 sh
->forced_local
= 1;
6456 sh
->root
.linker_def
= 1;
6461 if (htab
->glink
!= NULL
6462 && htab
->glink
->size
!= 0
6463 && htab
->glink_eh_frame
!= NULL
6464 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6465 && _bfd_elf_eh_frame_present (info
))
6467 s
= htab
->glink_eh_frame
;
6468 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6469 if (bfd_link_pic (info
))
6472 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6477 /* We've now determined the sizes of the various dynamic sections.
6478 Allocate memory for them. */
6480 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6482 bfd_boolean strip_section
= TRUE
;
6484 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6487 if (s
== htab
->elf
.splt
6488 || s
== htab
->elf
.sgot
)
6490 /* We'd like to strip these sections if they aren't needed, but if
6491 we've exported dynamic symbols from them we must leave them.
6492 It's too late to tell BFD to get rid of the symbols. */
6493 if (htab
->elf
.hplt
!= NULL
)
6494 strip_section
= FALSE
;
6495 /* Strip this section if we don't need it; see the
6498 else if (s
== htab
->elf
.iplt
6500 || s
== htab
->glink_eh_frame
6501 || s
== htab
->elf
.sgotplt
6503 || s
== htab
->elf
.sdynbss
6504 || s
== htab
->elf
.sdynrelro
6505 || s
== htab
->dynsbss
)
6507 /* Strip these too. */
6509 else if (s
== htab
->sdata
[0].section
6510 || s
== htab
->sdata
[1].section
)
6512 strip_section
= (s
->flags
& SEC_KEEP
) == 0;
6514 else if (CONST_STRNEQ (bfd_get_section_name (htab
->elf
.dynobj
, s
),
6519 /* Remember whether there are any relocation sections. */
6522 /* We use the reloc_count field as a counter if we need
6523 to copy relocs into the output file. */
6529 /* It's not one of our sections, so don't allocate space. */
6533 if (s
->size
== 0 && strip_section
)
6535 /* If we don't need this section, strip it from the
6536 output file. This is mostly to handle .rela.bss and
6537 .rela.plt. We must create both sections in
6538 create_dynamic_sections, because they must be created
6539 before the linker maps input sections to output
6540 sections. The linker does that before
6541 adjust_dynamic_symbol is called, and it is that
6542 function which decides whether anything needs to go
6543 into these sections. */
6544 s
->flags
|= SEC_EXCLUDE
;
6548 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
6551 /* Allocate memory for the section contents. */
6552 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
6553 if (s
->contents
== NULL
)
6557 if (htab
->elf
.dynamic_sections_created
)
6559 /* Add some entries to the .dynamic section. We fill in the
6560 values later, in ppc_elf_finish_dynamic_sections, but we
6561 must add the entries now so that we get the correct size for
6562 the .dynamic section. The DT_DEBUG entry is filled in by the
6563 dynamic linker and used by the debugger. */
6564 #define add_dynamic_entry(TAG, VAL) \
6565 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6567 if (bfd_link_executable (info
))
6569 if (!add_dynamic_entry (DT_DEBUG
, 0))
6573 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
6575 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6576 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6577 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6578 || !add_dynamic_entry (DT_JMPREL
, 0))
6582 if (htab
->plt_type
== PLT_NEW
6583 && htab
->glink
!= NULL
6584 && htab
->glink
->size
!= 0)
6586 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
6588 if (!htab
->params
->no_tls_get_addr_opt
6589 && htab
->tls_get_addr
!= NULL
6590 && htab
->tls_get_addr
->plt
.plist
!= NULL
6591 && !add_dynamic_entry (DT_PPC_OPT
, PPC_OPT_TLS
))
6597 if (!add_dynamic_entry (DT_RELA
, 0)
6598 || !add_dynamic_entry (DT_RELASZ
, 0)
6599 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
6603 /* If any dynamic relocs apply to a read-only section, then we
6604 need a DT_TEXTREL entry. */
6605 if ((info
->flags
& DF_TEXTREL
) == 0)
6606 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
6609 if ((info
->flags
& DF_TEXTREL
) != 0)
6611 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6614 if (htab
->is_vxworks
6615 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
6618 #undef add_dynamic_entry
6620 if (htab
->glink_eh_frame
!= NULL
6621 && htab
->glink_eh_frame
->contents
!= NULL
)
6623 unsigned char *p
= htab
->glink_eh_frame
->contents
;
6626 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
6627 /* CIE length (rewrite in case little-endian). */
6628 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
6629 p
+= sizeof (glink_eh_frame_cie
);
6631 val
= htab
->glink_eh_frame
->size
- 4 - sizeof (glink_eh_frame_cie
);
6632 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6635 val
= p
- htab
->glink_eh_frame
->contents
;
6636 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6638 /* Offset to .glink. Set later. */
6641 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
, p
);
6646 if (bfd_link_pic (info
)
6647 && htab
->elf
.dynamic_sections_created
)
6649 bfd_vma adv
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8) >> 2;
6651 *p
++ = DW_CFA_advance_loc
+ adv
;
6654 *p
++ = DW_CFA_advance_loc1
;
6657 else if (adv
< 65536)
6659 *p
++ = DW_CFA_advance_loc2
;
6660 bfd_put_16 (htab
->elf
.dynobj
, adv
, p
);
6665 *p
++ = DW_CFA_advance_loc4
;
6666 bfd_put_32 (htab
->elf
.dynobj
, adv
, p
);
6669 *p
++ = DW_CFA_register
;
6672 *p
++ = DW_CFA_advance_loc
+ 4;
6673 *p
++ = DW_CFA_restore_extended
;
6676 BFD_ASSERT ((bfd_vma
) ((p
+ 3 - htab
->glink_eh_frame
->contents
) & -4)
6677 == htab
->glink_eh_frame
->size
);
6683 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6684 if it looks like nothing is using them. */
6687 maybe_strip_sdasym (bfd
*output_bfd
, elf_linker_section_t
*lsect
)
6689 struct elf_link_hash_entry
*sda
= lsect
->sym
;
6691 if (sda
!= NULL
&& !sda
->ref_regular
&& sda
->dynindx
== -1)
6695 s
= bfd_get_section_by_name (output_bfd
, lsect
->name
);
6696 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6698 s
= bfd_get_section_by_name (output_bfd
, lsect
->bss_name
);
6699 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6701 sda
->def_regular
= 0;
6702 /* This is somewhat magic. See elf_link_output_extsym. */
6703 sda
->ref_dynamic
= 1;
6704 sda
->forced_local
= 0;
6711 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info
*info
)
6713 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6717 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[0]);
6718 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[1]);
6723 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6726 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6728 if (h
->plt
.plist
!= NULL
6730 && (!h
->pointer_equality_needed
6731 || !h
->ref_regular_nonweak
))
6734 return _bfd_elf_hash_symbol (h
);
6737 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6739 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6740 used for some functions that are allowed to break the ABI). */
6741 static const int shared_stub_entry
[] =
6743 0x7c0802a6, /* mflr 0 */
6744 0x429f0005, /* bcl 20, 31, .Lxxx */
6745 0x7d8802a6, /* mflr 12 */
6746 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6747 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6748 0x7c0803a6, /* mtlr 0 */
6749 0x7d8903a6, /* mtctr 12 */
6750 0x4e800420, /* bctr */
6753 static const int stub_entry
[] =
6755 0x3d800000, /* lis 12,xxx@ha */
6756 0x398c0000, /* addi 12,12,xxx@l */
6757 0x7d8903a6, /* mtctr 12 */
6758 0x4e800420, /* bctr */
6761 struct ppc_elf_relax_info
6763 unsigned int workaround_size
;
6764 unsigned int picfixup_size
;
6767 /* This function implements long branch trampolines, and the ppc476
6768 icache bug workaround. Any section needing trampolines or patch
6769 space for the workaround has its size extended so that we can
6770 add trampolines at the end of the section. */
6773 ppc_elf_relax_section (bfd
*abfd
,
6775 struct bfd_link_info
*link_info
,
6778 struct one_branch_fixup
6780 struct one_branch_fixup
*next
;
6782 /* Final link, can use the symbol offset. For a
6783 relocatable link we use the symbol's index. */
6788 Elf_Internal_Shdr
*symtab_hdr
;
6789 bfd_byte
*contents
= NULL
;
6790 Elf_Internal_Sym
*isymbuf
= NULL
;
6791 Elf_Internal_Rela
*internal_relocs
= NULL
;
6792 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6793 struct one_branch_fixup
*branch_fixups
= NULL
;
6794 struct ppc_elf_relax_info
*relax_info
= NULL
;
6795 unsigned changes
= 0;
6796 bfd_boolean workaround_change
;
6797 struct ppc_elf_link_hash_table
*htab
;
6798 bfd_size_type trampbase
, trampoff
, newsize
, picfixup_size
;
6800 bfd_boolean maybe_pasted
;
6804 /* No need to do anything with non-alloc or non-code sections. */
6805 if ((isec
->flags
& SEC_ALLOC
) == 0
6806 || (isec
->flags
& SEC_CODE
) == 0
6807 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6811 /* We cannot represent the required PIC relocs in the output, so don't
6812 do anything. The linker doesn't support mixing -shared and -r
6814 if (bfd_link_relocatable (link_info
) && bfd_link_pic (link_info
))
6817 htab
= ppc_elf_hash_table (link_info
);
6821 isec
->size
= (isec
->size
+ 3) & -4;
6822 if (isec
->rawsize
== 0)
6823 isec
->rawsize
= isec
->size
;
6824 trampbase
= isec
->size
;
6826 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6827 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6828 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6830 if (htab
->params
->ppc476_workaround
6831 || htab
->params
->pic_fixup
> 0)
6833 if (elf_section_data (isec
)->sec_info
== NULL
)
6835 elf_section_data (isec
)->sec_info
6836 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
6837 if (elf_section_data (isec
)->sec_info
== NULL
)
6840 relax_info
= elf_section_data (isec
)->sec_info
;
6841 trampbase
-= relax_info
->workaround_size
;
6844 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6845 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6846 /* Space for a branch around any trampolines. */
6847 trampoff
= trampbase
;
6848 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
6851 symtab_hdr
= &elf_symtab_hdr (abfd
);
6853 if (htab
->params
->branch_trampolines
6854 || htab
->params
->pic_fixup
> 0)
6856 /* Get a copy of the native relocations. */
6857 if (isec
->reloc_count
!= 0)
6859 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6860 link_info
->keep_memory
);
6861 if (internal_relocs
== NULL
)
6865 got2
= bfd_get_section_by_name (abfd
, ".got2");
6867 irelend
= internal_relocs
+ isec
->reloc_count
;
6868 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6870 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6873 struct one_branch_fixup
*f
;
6874 size_t insn_offset
= 0;
6875 bfd_vma max_branch_offset
= 0, val
;
6878 struct elf_link_hash_entry
*h
;
6879 struct plt_entry
**plist
;
6880 unsigned char sym_type
;
6885 case R_PPC_LOCAL24PC
:
6886 case R_PPC_PLTREL24
:
6887 max_branch_offset
= 1 << 25;
6891 case R_PPC_REL14_BRTAKEN
:
6892 case R_PPC_REL14_BRNTAKEN
:
6893 max_branch_offset
= 1 << 15;
6896 case R_PPC_ADDR16_HA
:
6897 if (htab
->params
->pic_fixup
> 0)
6905 /* Get the value of the symbol referred to by the reloc. */
6907 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6909 /* A local symbol. */
6910 Elf_Internal_Sym
*isym
;
6912 /* Read this BFD's local symbols. */
6913 if (isymbuf
== NULL
)
6915 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6916 if (isymbuf
== NULL
)
6917 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
6918 symtab_hdr
->sh_info
, 0,
6923 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6924 if (isym
->st_shndx
== SHN_UNDEF
)
6925 tsec
= bfd_und_section_ptr
;
6926 else if (isym
->st_shndx
== SHN_ABS
)
6927 tsec
= bfd_abs_section_ptr
;
6928 else if (isym
->st_shndx
== SHN_COMMON
)
6929 tsec
= bfd_com_section_ptr
;
6931 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6933 toff
= isym
->st_value
;
6934 sym_type
= ELF_ST_TYPE (isym
->st_info
);
6938 /* Global symbol handling. */
6941 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6942 h
= elf_sym_hashes (abfd
)[indx
];
6944 while (h
->root
.type
== bfd_link_hash_indirect
6945 || h
->root
.type
== bfd_link_hash_warning
)
6946 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6948 if (h
->root
.type
== bfd_link_hash_defined
6949 || h
->root
.type
== bfd_link_hash_defweak
)
6951 tsec
= h
->root
.u
.def
.section
;
6952 toff
= h
->root
.u
.def
.value
;
6954 else if (h
->root
.type
== bfd_link_hash_undefined
6955 || h
->root
.type
== bfd_link_hash_undefweak
)
6957 tsec
= bfd_und_section_ptr
;
6958 toff
= bfd_link_relocatable (link_info
) ? indx
: 0;
6963 /* If this branch is to __tls_get_addr then we may later
6964 optimise away the call. We won't be needing a long-
6965 branch stub in that case. */
6966 if (bfd_link_executable (link_info
)
6967 && h
== htab
->tls_get_addr
6968 && irel
!= internal_relocs
)
6970 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
6971 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
6972 unsigned int tls_mask
= 0;
6974 /* The previous reloc should be one of R_PPC_TLSGD or
6975 R_PPC_TLSLD, or for older object files, a reloc
6976 on the __tls_get_addr arg setup insn. Get tls
6977 mask bits from the symbol on that reloc. */
6978 if (t_symndx
< symtab_hdr
->sh_info
)
6980 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6982 if (local_got_offsets
!= NULL
)
6984 struct plt_entry
**local_plt
= (struct plt_entry
**)
6985 (local_got_offsets
+ symtab_hdr
->sh_info
);
6986 char *lgot_masks
= (char *)
6987 (local_plt
+ symtab_hdr
->sh_info
);
6988 tls_mask
= lgot_masks
[t_symndx
];
6993 struct elf_link_hash_entry
*th
6994 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
6996 while (th
->root
.type
== bfd_link_hash_indirect
6997 || th
->root
.type
== bfd_link_hash_warning
)
6998 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
7001 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
7004 /* The mask bits tell us if the call will be
7006 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
7007 && (t_rtype
== R_PPC_TLSGD
7008 || t_rtype
== R_PPC_GOT_TLSGD16
7009 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
7011 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
7012 && (t_rtype
== R_PPC_TLSLD
7013 || t_rtype
== R_PPC_GOT_TLSLD16
7014 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
7021 if (r_type
== R_PPC_ADDR16_HA
)
7026 && ppc_elf_hash_entry (h
)->has_addr16_ha
7027 && ppc_elf_hash_entry (h
)->has_addr16_lo
)
7028 picfixup_size
+= 12;
7032 /* The condition here under which we call find_plt_ent must
7033 match that in relocate_section. If we call find_plt_ent here
7034 but not in relocate_section, or vice versa, then the branch
7035 destination used here may be incorrect. */
7039 /* We know is_branch_reloc (r_type) is true. */
7040 if (h
->type
== STT_GNU_IFUNC
7041 || r_type
== R_PPC_PLTREL24
)
7042 plist
= &h
->plt
.plist
;
7044 else if (sym_type
== STT_GNU_IFUNC
7045 && elf_local_got_offsets (abfd
) != NULL
)
7047 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7048 struct plt_entry
**local_plt
= (struct plt_entry
**)
7049 (local_got_offsets
+ symtab_hdr
->sh_info
);
7050 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
7055 struct plt_entry
*ent
;
7057 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (link_info
))
7058 addend
= irel
->r_addend
;
7059 ent
= find_plt_ent (plist
, got2
, addend
);
7062 if (htab
->plt_type
== PLT_NEW
7064 || !htab
->elf
.dynamic_sections_created
7065 || h
->dynindx
== -1)
7068 toff
= ent
->glink_offset
;
7072 tsec
= htab
->elf
.splt
;
7073 toff
= ent
->plt
.offset
;
7078 /* If the branch and target are in the same section, you have
7079 no hope of adding stubs. We'll error out later should the
7084 /* There probably isn't any reason to handle symbols in
7085 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7086 attribute for a code section, and we are only looking at
7087 branches. However, implement it correctly here as a
7088 reference for other target relax_section functions. */
7089 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
7091 /* At this stage in linking, no SEC_MERGE symbol has been
7092 adjusted, so all references to such symbols need to be
7093 passed through _bfd_merged_section_offset. (Later, in
7094 relocate_section, all SEC_MERGE symbols *except* for
7095 section symbols have been adjusted.)
7097 gas may reduce relocations against symbols in SEC_MERGE
7098 sections to a relocation against the section symbol when
7099 the original addend was zero. When the reloc is against
7100 a section symbol we should include the addend in the
7101 offset passed to _bfd_merged_section_offset, since the
7102 location of interest is the original symbol. On the
7103 other hand, an access to "sym+addend" where "sym" is not
7104 a section symbol should not include the addend; Such an
7105 access is presumed to be an offset from "sym"; The
7106 location of interest is just "sym". */
7107 if (sym_type
== STT_SECTION
)
7108 toff
+= irel
->r_addend
;
7111 = _bfd_merged_section_offset (abfd
, &tsec
,
7112 elf_section_data (tsec
)->sec_info
,
7115 if (sym_type
!= STT_SECTION
)
7116 toff
+= irel
->r_addend
;
7118 /* PLTREL24 addends are special. */
7119 else if (r_type
!= R_PPC_PLTREL24
)
7120 toff
+= irel
->r_addend
;
7122 /* Attempted -shared link of non-pic code loses. */
7123 if ((!bfd_link_relocatable (link_info
)
7124 && tsec
== bfd_und_section_ptr
)
7125 || tsec
->output_section
== NULL
7126 || (tsec
->owner
!= NULL
7127 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
7130 roff
= irel
->r_offset
;
7132 /* If the branch is in range, no need to do anything. */
7133 if (tsec
!= bfd_und_section_ptr
7134 && (!bfd_link_relocatable (link_info
)
7135 /* A relocatable link may have sections moved during
7136 final link, so do not presume they remain in range. */
7137 || tsec
->output_section
== isec
->output_section
))
7139 bfd_vma symaddr
, reladdr
;
7141 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7142 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7143 if (symaddr
- reladdr
+ max_branch_offset
7144 < 2 * max_branch_offset
)
7148 /* Look for an existing fixup to this address. */
7149 for (f
= branch_fixups
; f
; f
= f
->next
)
7150 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7156 unsigned long stub_rtype
;
7158 val
= trampoff
- roff
;
7159 if (val
>= max_branch_offset
)
7160 /* Oh dear, we can't reach a trampoline. Don't try to add
7161 one. We'll report an error later. */
7164 if (bfd_link_pic (link_info
))
7166 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7171 size
= 4 * ARRAY_SIZE (stub_entry
);
7174 if (!htab
->params
->speculate_indirect_jumps
)
7176 stub_rtype
= R_PPC_RELAX
;
7177 if (tsec
== htab
->elf
.splt
7178 || tsec
== htab
->glink
)
7180 stub_rtype
= R_PPC_RELAX_PLT
;
7181 if (r_type
== R_PPC_PLTREL24
)
7182 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7185 /* Hijack the old relocation. Since we need two
7186 relocations for this use a "composite" reloc. */
7187 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7189 irel
->r_offset
= trampoff
+ insn_offset
;
7190 if (r_type
== R_PPC_PLTREL24
7191 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7194 /* Record the fixup so we don't do it again this section. */
7195 f
= bfd_malloc (sizeof (*f
));
7196 f
->next
= branch_fixups
;
7199 f
->trampoff
= trampoff
;
7207 val
= f
->trampoff
- roff
;
7208 if (val
>= max_branch_offset
)
7211 /* Nop out the reloc, since we're finalizing things here. */
7212 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7215 /* Get the section contents. */
7216 if (contents
== NULL
)
7218 /* Get cached copy if it exists. */
7219 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7220 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7221 /* Go get them off disk. */
7222 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7226 /* Fix up the existing branch to hit the trampoline. */
7227 hit_addr
= contents
+ roff
;
7231 case R_PPC_LOCAL24PC
:
7232 case R_PPC_PLTREL24
:
7233 t0
= bfd_get_32 (abfd
, hit_addr
);
7235 t0
|= val
& 0x3fffffc;
7236 bfd_put_32 (abfd
, t0
, hit_addr
);
7240 case R_PPC_REL14_BRTAKEN
:
7241 case R_PPC_REL14_BRNTAKEN
:
7242 t0
= bfd_get_32 (abfd
, hit_addr
);
7245 bfd_put_32 (abfd
, t0
, hit_addr
);
7250 while (branch_fixups
!= NULL
)
7252 struct one_branch_fixup
*f
= branch_fixups
;
7253 branch_fixups
= branch_fixups
->next
;
7258 workaround_change
= FALSE
;
7260 if (htab
->params
->ppc476_workaround
7261 && (!bfd_link_relocatable (link_info
)
7262 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7264 bfd_vma addr
, end_addr
;
7265 unsigned int crossings
;
7266 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7268 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7269 end_addr
= addr
+ trampoff
;
7271 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7274 /* Keep space aligned, to ensure the patch code itself does
7275 not cross a page. Don't decrease size calculated on a
7276 previous pass as otherwise we might never settle on a layout. */
7277 newsize
= 15 - ((end_addr
- 1) & 15);
7278 newsize
+= crossings
* 16;
7279 if (relax_info
->workaround_size
< newsize
)
7281 relax_info
->workaround_size
= newsize
;
7282 workaround_change
= TRUE
;
7284 /* Ensure relocate_section is called. */
7285 isec
->flags
|= SEC_RELOC
;
7287 newsize
= trampoff
+ relax_info
->workaround_size
;
7290 if (htab
->params
->pic_fixup
> 0)
7292 picfixup_size
-= relax_info
->picfixup_size
;
7293 if (picfixup_size
!= 0)
7294 relax_info
->picfixup_size
+= picfixup_size
;
7295 newsize
+= relax_info
->picfixup_size
;
7298 if (changes
!= 0 || picfixup_size
!= 0 || workaround_change
)
7299 isec
->size
= newsize
;
7302 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7304 if (! link_info
->keep_memory
)
7308 /* Cache the symbols for elf_link_input_bfd. */
7309 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7313 if (contents
!= NULL
7314 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7316 if (!changes
&& !link_info
->keep_memory
)
7320 /* Cache the section contents for elf_link_input_bfd. */
7321 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7325 changes
+= picfixup_size
;
7328 /* Append sufficient NOP relocs so we can write out relocation
7329 information for the trampolines. */
7330 Elf_Internal_Shdr
*rel_hdr
;
7331 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7332 * sizeof (*new_relocs
));
7337 memcpy (new_relocs
, internal_relocs
,
7338 isec
->reloc_count
* sizeof (*new_relocs
));
7339 for (ix
= changes
; ix
--;)
7341 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7343 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7345 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7346 free (internal_relocs
);
7347 elf_section_data (isec
)->relocs
= new_relocs
;
7348 isec
->reloc_count
+= changes
;
7349 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7350 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7352 else if (internal_relocs
!= NULL
7353 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7354 free (internal_relocs
);
7356 *again
= changes
!= 0 || workaround_change
;
7360 while (branch_fixups
!= NULL
)
7362 struct one_branch_fixup
*f
= branch_fixups
;
7363 branch_fixups
= branch_fixups
->next
;
7366 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7368 if (contents
!= NULL
7369 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7371 if (internal_relocs
!= NULL
7372 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7373 free (internal_relocs
);
7377 /* What to do when ld finds relocations against symbols defined in
7378 discarded sections. */
7381 ppc_elf_action_discarded (asection
*sec
)
7383 if (strcmp (".fixup", sec
->name
) == 0)
7386 if (strcmp (".got2", sec
->name
) == 0)
7389 return _bfd_elf_default_action_discarded (sec
);
7392 /* Fill in the address for a pointer generated in a linker section. */
7395 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7396 elf_linker_section_t
*lsect
,
7397 struct elf_link_hash_entry
*h
,
7399 const Elf_Internal_Rela
*rel
)
7401 elf_linker_section_pointers_t
*linker_section_ptr
;
7403 BFD_ASSERT (lsect
!= NULL
);
7407 /* Handle global symbol. */
7408 struct ppc_elf_link_hash_entry
*eh
;
7410 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7411 BFD_ASSERT (eh
->elf
.def_regular
);
7412 linker_section_ptr
= eh
->linker_section_pointer
;
7416 /* Handle local symbol. */
7417 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7419 BFD_ASSERT (is_ppc_elf (input_bfd
));
7420 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7421 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7424 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7427 BFD_ASSERT (linker_section_ptr
!= NULL
);
7429 /* Offset will always be a multiple of four, so use the bottom bit
7430 as a "written" flag. */
7431 if ((linker_section_ptr
->offset
& 1) == 0)
7433 bfd_put_32 (lsect
->section
->owner
,
7434 relocation
+ linker_section_ptr
->addend
,
7435 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7436 linker_section_ptr
->offset
+= 1;
7439 relocation
= (lsect
->section
->output_section
->vma
7440 + lsect
->section
->output_offset
7441 + linker_section_ptr
->offset
- 1
7442 - SYM_VAL (lsect
->sym
));
7446 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7447 lsect
->name
, (long) relocation
, (long) relocation
);
7453 #define PPC_LO(v) ((v) & 0xffff)
7454 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7455 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7457 static inline bfd_byte
*
7458 output_bctr (struct ppc_elf_link_hash_table
*htab
, bfd
*obfd
, bfd_byte
*p
)
7460 if (!htab
->params
->speculate_indirect_jumps
)
7462 bfd_put_32 (obfd
, CRSETEQ
, p
);
7464 bfd_put_32 (obfd
, BEQCTRM
, p
);
7466 bfd_put_32 (obfd
, B
, p
);
7471 bfd_put_32 (obfd
, BCTR
, p
);
7478 write_glink_stub (struct elf_link_hash_entry
*h
, struct plt_entry
*ent
,
7479 asection
*plt_sec
, unsigned char *p
,
7480 struct bfd_link_info
*info
)
7482 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7483 bfd
*output_bfd
= info
->output_bfd
;
7485 unsigned char *end
= p
+ GLINK_ENTRY_SIZE (htab
, h
);
7488 && h
== htab
->tls_get_addr
7489 && !htab
->params
->no_tls_get_addr_opt
)
7491 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
7493 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
7495 bfd_put_32 (output_bfd
, MR_0_3
, p
);
7497 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
7499 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
7501 bfd_put_32 (output_bfd
, BEQLR
, p
);
7503 bfd_put_32 (output_bfd
, MR_3_0
, p
);
7505 bfd_put_32 (output_bfd
, NOP
, p
);
7509 plt
= ((ent
->plt
.offset
& ~1)
7510 + plt_sec
->output_section
->vma
7511 + plt_sec
->output_offset
);
7513 if (bfd_link_pic (info
))
7517 if (ent
->addend
>= 32768)
7519 + ent
->sec
->output_section
->vma
7520 + ent
->sec
->output_offset
);
7521 else if (htab
->elf
.hgot
!= NULL
)
7522 got
= SYM_VAL (htab
->elf
.hgot
);
7526 if (plt
+ 0x8000 < 0x10000)
7527 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7530 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7532 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7537 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7539 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7542 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7544 p
= output_bctr (htab
, output_bfd
, p
);
7547 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7552 /* Return true if symbol is defined statically. */
7555 is_static_defined (struct elf_link_hash_entry
*h
)
7557 return ((h
->root
.type
== bfd_link_hash_defined
7558 || h
->root
.type
== bfd_link_hash_defweak
)
7559 && h
->root
.u
.def
.section
!= NULL
7560 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7563 /* If INSN is an opcode that may be used with an @tls operand, return
7564 the transformed insn for TLS optimisation, otherwise return 0. If
7565 REG is non-zero only match an insn with RB or RA equal to REG. */
7568 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7572 if ((insn
& (0x3f << 26)) != 31 << 26)
7575 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7576 rtra
= insn
& ((1 << 26) - (1 << 16));
7577 else if (((insn
>> 16) & 0x1f) == reg
)
7578 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7582 if ((insn
& (0x3ff << 1)) == 266 << 1)
7585 else if ((insn
& (0x1f << 1)) == 23 << 1
7586 && ((insn
& (0x1f << 6)) < 14 << 6
7587 || ((insn
& (0x1f << 6)) >= 16 << 6
7588 && (insn
& (0x1f << 6)) < 24 << 6)))
7589 /* load and store indexed -> dform. */
7590 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7591 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7592 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7593 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7594 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7596 insn
= (58 << 26) | 2;
7603 /* If INSN is an opcode that may be used with an @tprel operand, return
7604 the transformed insn for an undefined weak symbol, ie. with the
7605 thread pointer REG operand removed. Otherwise return 0. */
7608 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7610 if ((insn
& (0x1f << 16)) == reg
<< 16
7611 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7612 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7613 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7614 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7615 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7616 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7617 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7618 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7619 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7620 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7621 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7622 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7623 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7624 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7625 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7626 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7628 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7629 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7631 insn
&= ~(0x1f << 16);
7633 else if ((insn
& (0x1f << 21)) == reg
<< 21
7634 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7635 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7636 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7638 insn
&= ~(0x1f << 21);
7639 insn
|= (insn
& (0x1f << 16)) << 5;
7640 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7641 insn
-= 2 >> 26; /* convert to ori,oris */
7649 is_insn_ds_form (unsigned int insn
)
7651 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7652 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7653 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7654 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7658 is_insn_dq_form (unsigned int insn
)
7660 return ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
7661 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7662 && (insn
& 3) == 1));
7665 /* The RELOCATE_SECTION function is called by the ELF backend linker
7666 to handle the relocations for a section.
7668 The relocs are always passed as Rela structures; if the section
7669 actually uses Rel structures, the r_addend field will always be
7672 This function is responsible for adjust the section contents as
7673 necessary, and (if using Rela relocs and generating a
7674 relocatable output file) adjusting the reloc addend as
7677 This function does not have to worry about setting the reloc
7678 address or the reloc symbol index.
7680 LOCAL_SYMS is a pointer to the swapped in local symbols.
7682 LOCAL_SECTIONS is an array giving the section in the input file
7683 corresponding to the st_shndx field of each local symbol.
7685 The global hash table entry for the global symbols can be found
7686 via elf_sym_hashes (input_bfd).
7688 When generating relocatable output, this function must handle
7689 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7690 going to be the section symbol corresponding to the output
7691 section, which means that the addend must be adjusted
7695 ppc_elf_relocate_section (bfd
*output_bfd
,
7696 struct bfd_link_info
*info
,
7698 asection
*input_section
,
7700 Elf_Internal_Rela
*relocs
,
7701 Elf_Internal_Sym
*local_syms
,
7702 asection
**local_sections
)
7704 Elf_Internal_Shdr
*symtab_hdr
;
7705 struct elf_link_hash_entry
**sym_hashes
;
7706 struct ppc_elf_link_hash_table
*htab
;
7707 Elf_Internal_Rela
*rel
;
7708 Elf_Internal_Rela
*wrel
;
7709 Elf_Internal_Rela
*relend
;
7710 Elf_Internal_Rela outrel
;
7712 bfd_vma
*local_got_offsets
;
7713 bfd_boolean ret
= TRUE
;
7714 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
7715 bfd_boolean is_vxworks_tls
;
7716 unsigned int picfixup_size
= 0;
7717 struct ppc_elf_relax_info
*relax_info
= NULL
;
7720 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7721 "%ld relocations%s",
7722 input_bfd
, input_section
,
7723 (long) input_section
->reloc_count
,
7724 (bfd_link_relocatable (info
)) ? " (relocatable)" : "");
7727 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7729 /* Initialize howto table if not already done. */
7730 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7731 ppc_elf_howto_init ();
7733 htab
= ppc_elf_hash_table (info
);
7734 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7735 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7736 sym_hashes
= elf_sym_hashes (input_bfd
);
7737 /* We have to handle relocations in vxworks .tls_vars sections
7738 specially, because the dynamic loader is 'weird'. */
7739 is_vxworks_tls
= (htab
->is_vxworks
&& bfd_link_pic (info
)
7740 && !strcmp (input_section
->output_section
->name
,
7742 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
)
7743 relax_info
= elf_section_data (input_section
)->sec_info
;
7744 rel
= wrel
= relocs
;
7745 relend
= relocs
+ input_section
->reloc_count
;
7746 for (; rel
< relend
; wrel
++, rel
++)
7748 enum elf_ppc_reloc_type r_type
;
7750 bfd_reloc_status_type r
;
7751 Elf_Internal_Sym
*sym
;
7753 struct elf_link_hash_entry
*h
;
7754 const char *sym_name
;
7755 reloc_howto_type
*howto
;
7756 unsigned long r_symndx
;
7758 bfd_vma branch_bit
, from
;
7759 bfd_boolean unresolved_reloc
;
7761 unsigned int tls_type
, tls_mask
, tls_gd
;
7762 struct plt_entry
**ifunc
;
7763 struct reloc_howto_struct alt_howto
;
7766 r_type
= ELF32_R_TYPE (rel
->r_info
);
7770 unresolved_reloc
= FALSE
;
7772 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7774 if (r_symndx
< symtab_hdr
->sh_info
)
7776 sym
= local_syms
+ r_symndx
;
7777 sec
= local_sections
[r_symndx
];
7778 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7780 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7784 bfd_boolean ignored
;
7786 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7787 r_symndx
, symtab_hdr
, sym_hashes
,
7789 unresolved_reloc
, warned
, ignored
);
7791 sym_name
= h
->root
.root
.string
;
7794 if (sec
!= NULL
&& discarded_section (sec
))
7796 /* For relocs against symbols from removed linkonce sections,
7797 or sections discarded by a linker script, we just want the
7798 section contents zeroed. Avoid any special processing. */
7800 if (r_type
< R_PPC_max
)
7801 howto
= ppc_elf_howto_table
[r_type
];
7803 _bfd_clear_contents (howto
, input_bfd
, input_section
,
7804 contents
+ rel
->r_offset
);
7805 wrel
->r_offset
= rel
->r_offset
;
7809 /* For ld -r, remove relocations in debug sections against
7810 symbols defined in discarded sections. Not done for
7811 non-debug to preserve relocs in .eh_frame which the
7812 eh_frame editing code expects to be present. */
7813 if (bfd_link_relocatable (info
)
7814 && (input_section
->flags
& SEC_DEBUGGING
))
7820 if (bfd_link_relocatable (info
))
7823 && r_type
== R_PPC_PLTREL24
7824 && rel
->r_addend
!= 0)
7826 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7827 addend specifies the GOT pointer offset within .got2. */
7828 rel
->r_addend
+= got2
->output_offset
;
7830 if (r_type
!= R_PPC_RELAX_PLT
7831 && r_type
!= R_PPC_RELAX_PLTREL24
7832 && r_type
!= R_PPC_RELAX
)
7836 /* TLS optimizations. Replace instruction sequences and relocs
7837 based on information we collected in tls_optimize. We edit
7838 RELOCS so that --emit-relocs will output something sensible
7839 for the final instruction stream. */
7843 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7844 else if (local_got_offsets
!= NULL
)
7846 struct plt_entry
**local_plt
;
7849 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7850 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7851 tls_mask
= lgot_masks
[r_symndx
];
7854 /* Ensure reloc mapping code below stays sane. */
7855 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7856 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7857 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7858 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7859 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7860 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7861 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7862 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
7869 case R_PPC_GOT_TPREL16
:
7870 case R_PPC_GOT_TPREL16_LO
:
7871 if ((tls_mask
& TLS_TLS
) != 0
7872 && (tls_mask
& TLS_TPREL
) == 0)
7876 insn
= bfd_get_32 (input_bfd
,
7877 contents
+ rel
->r_offset
- d_offset
);
7879 insn
|= 0x3c020000; /* addis 0,2,0 */
7880 bfd_put_32 (input_bfd
, insn
,
7881 contents
+ rel
->r_offset
- d_offset
);
7882 r_type
= R_PPC_TPREL16_HA
;
7883 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7888 if ((tls_mask
& TLS_TLS
) != 0
7889 && (tls_mask
& TLS_TPREL
) == 0)
7893 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7894 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
7897 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
7898 r_type
= R_PPC_TPREL16_LO
;
7899 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7901 /* Was PPC_TLS which sits on insn boundary, now
7902 PPC_TPREL16_LO which is at low-order half-word. */
7903 rel
->r_offset
+= d_offset
;
7907 case R_PPC_GOT_TLSGD16_HI
:
7908 case R_PPC_GOT_TLSGD16_HA
:
7909 tls_gd
= TLS_TPRELGD
;
7910 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7914 case R_PPC_GOT_TLSLD16_HI
:
7915 case R_PPC_GOT_TLSLD16_HA
:
7916 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7919 if ((tls_mask
& tls_gd
) != 0)
7920 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7921 + R_PPC_GOT_TPREL16
);
7924 rel
->r_offset
-= d_offset
;
7925 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
7926 r_type
= R_PPC_NONE
;
7928 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7932 case R_PPC_GOT_TLSGD16
:
7933 case R_PPC_GOT_TLSGD16_LO
:
7934 tls_gd
= TLS_TPRELGD
;
7935 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7939 case R_PPC_GOT_TLSLD16
:
7940 case R_PPC_GOT_TLSLD16_LO
:
7941 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7943 unsigned int insn1
, insn2
;
7947 offset
= (bfd_vma
) -1;
7948 /* If not using the newer R_PPC_TLSGD/LD to mark
7949 __tls_get_addr calls, we must trust that the call
7950 stays with its arg setup insns, ie. that the next
7951 reloc is the __tls_get_addr call associated with
7952 the current reloc. Edit both insns. */
7953 if (input_section
->has_tls_get_addr_call
7955 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
7956 htab
->tls_get_addr
))
7957 offset
= rel
[1].r_offset
;
7958 /* We read the low GOT_TLS insn because we need to keep
7959 the destination reg. It may be something other than
7960 the usual r3, and moved to r3 before the call by
7961 intervening code. */
7962 insn1
= bfd_get_32 (input_bfd
,
7963 contents
+ rel
->r_offset
- d_offset
);
7964 if ((tls_mask
& tls_gd
) != 0)
7967 insn1
&= (0x1f << 21) | (0x1f << 16);
7968 insn1
|= 32 << 26; /* lwz */
7969 if (offset
!= (bfd_vma
) -1)
7971 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7972 insn2
= 0x7c631214; /* add 3,3,2 */
7973 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
7975 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7976 + R_PPC_GOT_TPREL16
);
7977 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7982 insn1
&= 0x1f << 21;
7983 insn1
|= 0x3c020000; /* addis r,2,0 */
7986 /* Was an LD reloc. */
7988 r_symndx
< symtab_hdr
->sh_info
;
7990 if (local_sections
[r_symndx
] == sec
)
7992 if (r_symndx
>= symtab_hdr
->sh_info
)
7993 r_symndx
= STN_UNDEF
;
7994 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7995 if (r_symndx
!= STN_UNDEF
)
7996 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7997 + sec
->output_offset
7998 + sec
->output_section
->vma
);
8000 r_type
= R_PPC_TPREL16_HA
;
8001 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8002 if (offset
!= (bfd_vma
) -1)
8004 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8005 rel
[1].r_offset
= offset
+ d_offset
;
8006 rel
[1].r_addend
= rel
->r_addend
;
8007 insn2
= 0x38630000; /* addi 3,3,0 */
8008 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
8011 bfd_put_32 (input_bfd
, insn1
,
8012 contents
+ rel
->r_offset
- d_offset
);
8015 /* We changed the symbol on an LD reloc. Start over
8016 in order to get h, sym, sec etc. right. */
8023 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
8026 bfd_vma offset
= rel
->r_offset
;
8028 if ((tls_mask
& TLS_TPRELGD
) != 0)
8031 r_type
= R_PPC_NONE
;
8032 insn2
= 0x7c631214; /* add 3,3,2 */
8037 r_type
= R_PPC_TPREL16_LO
;
8038 rel
->r_offset
+= d_offset
;
8039 insn2
= 0x38630000; /* addi 3,3,0 */
8041 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8042 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
8043 /* Zap the reloc on the _tls_get_addr call too. */
8044 BFD_ASSERT (offset
== rel
[1].r_offset
);
8045 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8050 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
8055 r_symndx
< symtab_hdr
->sh_info
;
8057 if (local_sections
[r_symndx
] == sec
)
8059 if (r_symndx
>= symtab_hdr
->sh_info
)
8060 r_symndx
= STN_UNDEF
;
8061 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8062 if (r_symndx
!= STN_UNDEF
)
8063 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8064 + sec
->output_offset
8065 + sec
->output_section
->vma
);
8067 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8068 rel
->r_offset
+= d_offset
;
8069 insn2
= 0x38630000; /* addi 3,3,0 */
8070 bfd_put_32 (input_bfd
, insn2
,
8071 contents
+ rel
->r_offset
- d_offset
);
8072 /* Zap the reloc on the _tls_get_addr call too. */
8073 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
8074 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8080 /* Handle other relocations that tweak non-addend part of insn. */
8087 /* Branch taken prediction relocations. */
8088 case R_PPC_ADDR14_BRTAKEN
:
8089 case R_PPC_REL14_BRTAKEN
:
8090 branch_bit
= BRANCH_PREDICT_BIT
;
8093 /* Branch not taken prediction relocations. */
8094 case R_PPC_ADDR14_BRNTAKEN
:
8095 case R_PPC_REL14_BRNTAKEN
:
8099 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
8100 insn
&= ~BRANCH_PREDICT_BIT
;
8103 from
= (rel
->r_offset
8104 + input_section
->output_offset
8105 + input_section
->output_section
->vma
);
8107 /* Invert 'y' bit if not the default. */
8108 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
8109 insn
^= BRANCH_PREDICT_BIT
;
8111 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
8116 if (ELIMINATE_COPY_RELOCS
8120 && ppc_elf_hash_entry (h
)->has_addr16_ha
8121 && ppc_elf_hash_entry (h
)->has_addr16_lo
8122 && htab
->params
->pic_fixup
> 0)
8124 /* Convert lis;addi or lis;load/store accessing a protected
8125 variable defined in a shared library to PIC. */
8128 if (r_type
== R_PPC_ADDR16_HA
)
8130 insn
= bfd_get_32 (input_bfd
,
8131 contents
+ rel
->r_offset
- d_offset
);
8132 if ((insn
& (0x3f << 26)) == (15u << 26)
8133 && (insn
& (0x1f << 16)) == 0 /* lis */)
8139 p
= (contents
+ input_section
->size
8140 - relax_info
->workaround_size
8141 - relax_info
->picfixup_size
8143 off
= (p
- contents
) - (rel
->r_offset
- d_offset
);
8144 if (off
> 0x1fffffc || (off
& 3) != 0)
8145 info
->callbacks
->einfo
8146 (_("%H: fixup branch overflow\n"),
8147 input_bfd
, input_section
, rel
->r_offset
);
8149 bfd_put_32 (input_bfd
, B
| off
,
8150 contents
+ rel
->r_offset
- d_offset
);
8151 got_addr
= (htab
->elf
.sgot
->output_section
->vma
8152 + htab
->elf
.sgot
->output_offset
8153 + (h
->got
.offset
& ~1));
8154 wrel
->r_offset
= (p
- contents
) + d_offset
;
8155 wrel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_HA
);
8156 wrel
->r_addend
= got_addr
;
8158 insn
|= ((unsigned int) (got_addr
+ 0x8000) >> 16) & 0xffff;
8159 bfd_put_32 (input_bfd
, insn
, p
);
8161 /* Convert lis to lwz, loading address from GOT. */
8163 insn
^= (32u ^ 15u) << 26;
8164 insn
|= (insn
& (0x1f << 21)) >> 5;
8165 insn
|= got_addr
& 0xffff;
8166 bfd_put_32 (input_bfd
, insn
, p
+ 4);
8168 bfd_put_32 (input_bfd
, B
| ((-4 - off
) & 0x3ffffff), p
+ 8);
8169 picfixup_size
+= 12;
8171 /* Use one of the spare relocs, so --emit-relocs
8172 output is reasonable. */
8173 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8175 rel
->r_offset
= wrel
[-1].r_offset
+ 4;
8176 rel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_LO
);
8177 rel
->r_addend
= wrel
[-1].r_addend
;
8179 /* Continue on as if we had a got reloc, to output
8181 r_type
= R_PPC_GOT16_LO
;
8185 /* xgettext:c-format */
8186 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8187 input_bfd
, input_section
, rel
->r_offset
,
8188 "R_PPC_ADDR16_HA", insn
);
8190 else if (r_type
== R_PPC_ADDR16_LO
)
8192 insn
= bfd_get_32 (input_bfd
,
8193 contents
+ rel
->r_offset
- d_offset
);
8194 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8195 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8196 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8197 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8198 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8199 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8200 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8201 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8202 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8203 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8204 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8205 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8206 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8207 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8208 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8210 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8211 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
8213 /* Arrange to apply the reloc addend, if any. */
8215 unresolved_reloc
= FALSE
;
8216 rel
->r_info
= ELF32_R_INFO (0, r_type
);
8220 /* xgettext:c-format */
8221 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8222 input_bfd
, input_section
, rel
->r_offset
,
8223 "R_PPC_ADDR16_LO", insn
);
8228 if (!htab
->is_vxworks
)
8230 struct plt_entry
*ent
;
8234 if (h
->type
== STT_GNU_IFUNC
)
8235 ifunc
= &h
->plt
.plist
;
8237 else if (local_got_offsets
!= NULL
8238 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8240 struct plt_entry
**local_plt
;
8242 local_plt
= (struct plt_entry
**) (local_got_offsets
8243 + symtab_hdr
->sh_info
);
8244 ifunc
= local_plt
+ r_symndx
;
8249 && (!bfd_link_pic (info
)
8250 || is_branch_reloc (r_type
)))
8253 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
8254 addend
= rel
->r_addend
;
8255 ent
= find_plt_ent (ifunc
, got2
, addend
);
8259 if (bfd_link_pic (info
)
8261 && htab
->plt_type
!= PLT_NEW
8262 && (!htab
->elf
.dynamic_sections_created
8264 || h
->dynindx
== -1))
8266 /* Uh oh, we are going to create a pic glink stub
8267 for an ifunc (here for h == NULL and later in
8268 finish_dynamic_symbol for h != NULL), and
8269 apparently are using code compiled with
8270 -mbss-plt. The difficulty is that -mbss-plt code
8271 gives no indication via a magic PLTREL24 addend
8272 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8273 is pointing into a .got2 section (and how far
8275 info
->callbacks
->einfo
8276 /* xgettext:c-format */
8277 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8278 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
8280 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
8282 Elf_Internal_Rela rela
;
8285 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
8286 + htab
->elf
.iplt
->output_offset
8288 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8289 rela
.r_addend
= relocation
;
8290 loc
= htab
->elf
.irelplt
->contents
;
8291 loc
+= (htab
->elf
.irelplt
->reloc_count
++
8292 * sizeof (Elf32_External_Rela
));
8293 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8294 htab
->local_ifunc_resolver
= 1;
8296 ent
->plt
.offset
|= 1;
8298 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
8300 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
8301 + ent
->glink_offset
);
8303 write_glink_stub (NULL
, ent
, htab
->elf
.iplt
, p
, info
);
8304 ent
->glink_offset
|= 1;
8307 unresolved_reloc
= FALSE
;
8308 if (htab
->plt_type
== PLT_NEW
8309 || !htab
->elf
.dynamic_sections_created
8311 || h
->dynindx
== -1)
8312 relocation
= (htab
->glink
->output_section
->vma
8313 + htab
->glink
->output_offset
8314 + (ent
->glink_offset
& ~1));
8316 relocation
= (htab
->elf
.splt
->output_section
->vma
8317 + htab
->elf
.splt
->output_offset
8322 addend
= rel
->r_addend
;
8324 if (r_type
< R_PPC_max
)
8325 howto
= ppc_elf_howto_table
[r_type
];
8332 case R_PPC_TPREL16_HA
:
8333 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
8335 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
8336 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8337 if ((insn
& ((0x3f << 26) | 0x1f << 16))
8338 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8339 /* xgettext:c-format */
8340 info
->callbacks
->minfo
8341 (_("%H: warning: %s unexpected insn %#x.\n"),
8342 input_bfd
, input_section
, rel
->r_offset
, howto
->name
, insn
);
8344 bfd_put_32 (input_bfd
, NOP
, p
);
8348 case R_PPC_TPREL16_LO
:
8349 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
8351 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
8352 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8353 insn
&= ~(0x1f << 16);
8355 bfd_put_32 (input_bfd
, insn
, p
);
8364 info
->callbacks
->einfo
8365 /* xgettext:c-format */
8366 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8367 input_bfd
, (int) r_type
, sym_name
);
8369 bfd_set_error (bfd_error_bad_value
);
8377 case R_PPC_EMB_MRKREF
:
8378 case R_PPC_GNU_VTINHERIT
:
8379 case R_PPC_GNU_VTENTRY
:
8382 /* GOT16 relocations. Like an ADDR16 using the symbol's
8383 address in the GOT as relocation value instead of the
8384 symbol's value itself. Also, create a GOT entry for the
8385 symbol and put the symbol value there. */
8386 case R_PPC_GOT_TLSGD16
:
8387 case R_PPC_GOT_TLSGD16_LO
:
8388 case R_PPC_GOT_TLSGD16_HI
:
8389 case R_PPC_GOT_TLSGD16_HA
:
8390 tls_type
= TLS_TLS
| TLS_GD
;
8393 case R_PPC_GOT_TLSLD16
:
8394 case R_PPC_GOT_TLSLD16_LO
:
8395 case R_PPC_GOT_TLSLD16_HI
:
8396 case R_PPC_GOT_TLSLD16_HA
:
8397 tls_type
= TLS_TLS
| TLS_LD
;
8400 case R_PPC_GOT_TPREL16
:
8401 case R_PPC_GOT_TPREL16_LO
:
8402 case R_PPC_GOT_TPREL16_HI
:
8403 case R_PPC_GOT_TPREL16_HA
:
8404 tls_type
= TLS_TLS
| TLS_TPREL
;
8407 case R_PPC_GOT_DTPREL16
:
8408 case R_PPC_GOT_DTPREL16_LO
:
8409 case R_PPC_GOT_DTPREL16_HI
:
8410 case R_PPC_GOT_DTPREL16_HA
:
8411 tls_type
= TLS_TLS
| TLS_DTPREL
;
8415 case R_PPC_GOT16_LO
:
8416 case R_PPC_GOT16_HI
:
8417 case R_PPC_GOT16_HA
:
8421 /* Relocation is to the entry for this symbol in the global
8427 if (htab
->elf
.sgot
== NULL
)
8431 if (tls_type
== (TLS_TLS
| TLS_LD
)
8433 || !h
->def_dynamic
))
8434 offp
= &htab
->tlsld_got
.offset
;
8437 if (!htab
->elf
.dynamic_sections_created
8439 || SYMBOL_REFERENCES_LOCAL (info
, h
)
8440 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8441 /* This is actually a static link, or it is a
8442 -Bsymbolic link and the symbol is defined
8443 locally, or the symbol was forced to be local
8444 because of a version file. */
8449 unresolved_reloc
= FALSE
;
8451 offp
= &h
->got
.offset
;
8455 if (local_got_offsets
== NULL
)
8457 offp
= &local_got_offsets
[r_symndx
];
8460 /* The offset must always be a multiple of 4. We use the
8461 least significant bit to record whether we have already
8462 processed this entry. */
8468 unsigned int tls_m
= (tls_mask
8469 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8470 | TLS_TPREL
| TLS_TPRELGD
));
8472 if (offp
== &htab
->tlsld_got
.offset
)
8478 /* We might have multiple got entries for this sym.
8479 Initialize them all. */
8484 if ((tls_m
& TLS_LD
) != 0)
8486 tls_ty
= TLS_TLS
| TLS_LD
;
8489 else if ((tls_m
& TLS_GD
) != 0)
8491 tls_ty
= TLS_TLS
| TLS_GD
;
8494 else if ((tls_m
& TLS_DTPREL
) != 0)
8496 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8497 tls_m
&= ~TLS_DTPREL
;
8499 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8501 tls_ty
= TLS_TLS
| TLS_TPREL
;
8505 /* Generate relocs for the dynamic linker. */
8507 || (bfd_link_pic (info
)
8509 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)
8510 || offp
== &htab
->tlsld_got
.offset
)
8511 && !(tls_ty
== (TLS_TLS
| TLS_TPREL
)
8512 && bfd_link_executable (info
)
8513 && SYMBOL_REFERENCES_LOCAL (info
, h
))))
8515 asection
*rsec
= htab
->elf
.srelgot
;
8520 rsec
= htab
->elf
.irelplt
;
8522 htab
->local_ifunc_resolver
= 1;
8523 else if (is_static_defined (h
))
8524 htab
->maybe_local_ifunc_resolver
= 1;
8526 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
8527 + htab
->elf
.sgot
->output_offset
8529 outrel
.r_addend
= 0;
8530 if (tls_ty
& (TLS_LD
| TLS_GD
))
8532 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8533 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8535 loc
= rsec
->contents
;
8536 loc
+= (rsec
->reloc_count
++
8537 * sizeof (Elf32_External_Rela
));
8538 bfd_elf32_swap_reloca_out (output_bfd
,
8540 outrel
.r_offset
+= 4;
8542 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8545 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8546 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8547 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8548 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8550 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8551 else if (ifunc
!= NULL
)
8552 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8554 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8555 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8557 outrel
.r_addend
+= relocation
;
8558 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8560 if (htab
->elf
.tls_sec
== NULL
)
8561 outrel
.r_addend
= 0;
8563 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8566 loc
= rsec
->contents
;
8567 loc
+= (rsec
->reloc_count
++
8568 * sizeof (Elf32_External_Rela
));
8569 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8572 /* Init the .got section contents if we're not
8573 emitting a reloc. */
8576 bfd_vma value
= relocation
;
8580 if (htab
->elf
.tls_sec
== NULL
)
8584 if (tls_ty
& TLS_LD
)
8587 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8588 if (tls_ty
& TLS_TPREL
)
8589 value
+= DTP_OFFSET
- TP_OFFSET
;
8592 if (tls_ty
& (TLS_LD
| TLS_GD
))
8594 bfd_put_32 (input_bfd
, value
,
8595 htab
->elf
.sgot
->contents
+ off
+ 4);
8599 bfd_put_32 (input_bfd
, value
,
8600 htab
->elf
.sgot
->contents
+ off
);
8604 if (tls_ty
& (TLS_LD
| TLS_GD
))
8613 if (off
>= (bfd_vma
) -2)
8616 if ((tls_type
& TLS_TLS
) != 0)
8618 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8620 if ((tls_mask
& TLS_LD
) != 0
8622 || !h
->def_dynamic
))
8624 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8626 if ((tls_mask
& TLS_GD
) != 0)
8628 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8630 if ((tls_mask
& TLS_DTPREL
) != 0)
8637 /* If here for a picfixup, we're done. */
8638 if (r_type
!= ELF32_R_TYPE (rel
->r_info
))
8641 relocation
= (htab
->elf
.sgot
->output_section
->vma
8642 + htab
->elf
.sgot
->output_offset
8644 - SYM_VAL (htab
->elf
.hgot
));
8646 /* Addends on got relocations don't make much sense.
8647 x+off@got is actually x@got+off, and since the got is
8648 generated by a hash table traversal, the value in the
8649 got at entry m+n bears little relation to the entry m. */
8651 info
->callbacks
->einfo
8652 /* xgettext:c-format */
8653 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8654 input_bfd
, input_section
, rel
->r_offset
,
8660 /* Relocations that need no special processing. */
8661 case R_PPC_LOCAL24PC
:
8662 /* It makes no sense to point a local relocation
8663 at a symbol not in this object. */
8664 if (unresolved_reloc
)
8666 (*info
->callbacks
->undefined_symbol
) (info
,
8667 h
->root
.root
.string
,
8674 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
&& bfd_link_pic (info
))
8676 /* @local on an ifunc does not really make sense since
8677 the ifunc resolver can take you anywhere. More
8678 seriously, calls to ifuncs must go through a plt call
8679 stub, and for pic the plt call stubs uses r30 to
8680 access the PLT. The problem is that a call that is
8681 local won't have the +32k reloc addend trick marking
8682 -fPIC code, so the linker won't know whether r30 is
8683 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8684 /* xgettext:c-format */
8685 info
->callbacks
->einfo (_("%X%H: @local call to ifunc %s\n"),
8686 input_bfd
, input_section
, rel
->r_offset
,
8687 h
->root
.root
.string
);
8691 case R_PPC_DTPREL16
:
8692 case R_PPC_DTPREL16_LO
:
8693 case R_PPC_DTPREL16_HI
:
8694 case R_PPC_DTPREL16_HA
:
8695 if (htab
->elf
.tls_sec
!= NULL
)
8696 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8699 /* Relocations that may need to be propagated if this is a shared
8702 case R_PPC_TPREL16_LO
:
8703 case R_PPC_TPREL16_HI
:
8704 case R_PPC_TPREL16_HA
:
8706 && h
->root
.type
== bfd_link_hash_undefweak
8707 && h
->dynindx
== -1)
8709 /* Make this relocation against an undefined weak symbol
8710 resolve to zero. This is really just a tweak, since
8711 code using weak externs ought to check that they are
8712 defined before using them. */
8713 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8714 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8715 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8717 bfd_put_32 (input_bfd
, insn
, p
);
8720 if (htab
->elf
.tls_sec
!= NULL
)
8721 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8722 /* The TPREL16 relocs shouldn't really be used in shared
8723 libs or with non-local symbols as that will result in
8724 DT_TEXTREL being set, but support them anyway. */
8728 if (htab
->elf
.tls_sec
!= NULL
)
8729 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8732 case R_PPC_DTPREL32
:
8733 if (htab
->elf
.tls_sec
!= NULL
)
8734 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8737 case R_PPC_DTPMOD32
:
8743 case R_PPC_REL16_LO
:
8744 case R_PPC_REL16_HI
:
8745 case R_PPC_REL16_HA
:
8746 case R_PPC_REL16DX_HA
:
8750 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8756 case R_PPC_ADDR16_LO
:
8757 case R_PPC_ADDR16_HI
:
8758 case R_PPC_ADDR16_HA
:
8763 case R_PPC_VLE_REL8
:
8764 case R_PPC_VLE_REL15
:
8765 case R_PPC_VLE_REL24
:
8768 case R_PPC_REL14_BRTAKEN
:
8769 case R_PPC_REL14_BRNTAKEN
:
8770 /* If these relocations are not to a named symbol, they can be
8771 handled right here, no need to bother the dynamic linker. */
8772 if (SYMBOL_CALLS_LOCAL (info
, h
)
8773 || h
== htab
->elf
.hgot
)
8779 case R_PPC_ADDR14_BRTAKEN
:
8780 case R_PPC_ADDR14_BRNTAKEN
:
8781 if (h
!= NULL
&& !bfd_link_pic (info
))
8786 if ((input_section
->flags
& SEC_ALLOC
) == 0
8790 if (bfd_link_pic (info
)
8792 || ppc_elf_hash_entry (h
)->dyn_relocs
!= NULL
)
8793 && ((h
!= NULL
&& pc_dynrelocs (h
))
8794 || must_be_dyn_reloc (info
, r_type
)))
8796 && ppc_elf_hash_entry (h
)->dyn_relocs
!= NULL
))
8804 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8805 "create relocation for %s\n",
8806 (h
&& h
->root
.root
.string
8807 ? h
->root
.root
.string
: "<unknown>"));
8810 /* When generating a shared object, these relocations
8811 are copied into the output file to be resolved at run
8814 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8817 if (outrel
.r_offset
== (bfd_vma
) -1
8818 || outrel
.r_offset
== (bfd_vma
) -2)
8819 skip
= (int) outrel
.r_offset
;
8820 outrel
.r_offset
+= (input_section
->output_section
->vma
8821 + input_section
->output_offset
);
8824 memset (&outrel
, 0, sizeof outrel
);
8825 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8828 BFD_ASSERT (indx
!= -1);
8829 unresolved_reloc
= FALSE
;
8830 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8831 outrel
.r_addend
= rel
->r_addend
;
8835 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8837 if (r_type
!= R_PPC_ADDR32
)
8841 /* If we get here when building a static
8842 executable, then the libc startup function
8843 responsible for applying indirect function
8844 relocations is going to complain about
8846 If we get here when building a dynamic
8847 executable, it will be because we have
8848 a text relocation. The dynamic loader
8849 will set the text segment writable and
8850 non-executable to apply text relocations.
8851 So we'll segfault when trying to run the
8852 indirection function to resolve the reloc. */
8853 info
->callbacks
->einfo
8854 /* xgettext:c-format */
8855 (_("%H: relocation %s for indirect "
8856 "function %s unsupported\n"),
8857 input_bfd
, input_section
, rel
->r_offset
,
8862 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8864 else if (sec
== NULL
|| sec
->owner
== NULL
)
8866 bfd_set_error (bfd_error_bad_value
);
8873 /* We are turning this relocation into one
8874 against a section symbol. It would be
8875 proper to subtract the symbol's value,
8876 osec->vma, from the emitted reloc addend,
8877 but ld.so expects buggy relocs.
8878 FIXME: Why not always use a zero index? */
8879 osec
= sec
->output_section
;
8880 indx
= elf_section_data (osec
)->dynindx
;
8883 osec
= htab
->elf
.text_index_section
;
8884 indx
= elf_section_data (osec
)->dynindx
;
8886 BFD_ASSERT (indx
!= 0);
8889 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8890 indx
, osec
->name
, osec
->flags
,
8891 h
->root
.root
.string
);
8895 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8897 else if (ifunc
!= NULL
)
8898 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8900 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8903 sreloc
= elf_section_data (input_section
)->sreloc
;
8906 sreloc
= htab
->elf
.irelplt
;
8908 htab
->local_ifunc_resolver
= 1;
8909 else if (is_static_defined (h
))
8910 htab
->maybe_local_ifunc_resolver
= 1;
8915 loc
= sreloc
->contents
;
8916 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8917 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8922 /* This reloc will be computed at runtime. Clear the memory
8923 so that it contains a predictable value for prelink. */
8926 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
8933 case R_PPC_RELAX_PLT
:
8934 case R_PPC_RELAX_PLTREL24
:
8937 struct plt_entry
*ent
;
8938 bfd_vma got2_addend
= 0;
8940 if (r_type
== R_PPC_RELAX_PLTREL24
)
8942 if (bfd_link_pic (info
))
8943 got2_addend
= addend
;
8946 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
8947 if (htab
->plt_type
== PLT_NEW
)
8948 relocation
= (htab
->glink
->output_section
->vma
8949 + htab
->glink
->output_offset
8950 + ent
->glink_offset
);
8952 relocation
= (htab
->elf
.splt
->output_section
->vma
8953 + htab
->elf
.splt
->output_offset
8962 size_t insn_offset
= rel
->r_offset
;
8965 if (bfd_link_pic (info
))
8967 relocation
-= (input_section
->output_section
->vma
8968 + input_section
->output_offset
8969 + rel
->r_offset
- 4);
8970 stub
= shared_stub_entry
;
8971 bfd_put_32 (input_bfd
, stub
[0], contents
+ insn_offset
- 12);
8972 bfd_put_32 (input_bfd
, stub
[1], contents
+ insn_offset
- 8);
8973 bfd_put_32 (input_bfd
, stub
[2], contents
+ insn_offset
- 4);
8975 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
8980 size
= ARRAY_SIZE (stub_entry
);
8984 relocation
+= addend
;
8985 if (bfd_link_relocatable (info
))
8988 /* First insn is HA, second is LO. */
8990 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
8991 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8995 insn
|= relocation
& 0xffff;
8996 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
9004 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
9007 output_bctr (htab
, input_bfd
, contents
+ insn_offset
);
9009 /* Rewrite the reloc and convert one of the trailing nop
9010 relocs to describe this relocation. */
9011 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
9012 /* The relocs are at the bottom 2 bytes */
9013 wrel
->r_offset
= rel
->r_offset
+ d_offset
;
9014 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
9015 wrel
->r_addend
= rel
->r_addend
;
9016 memmove (wrel
+ 1, wrel
, (relend
- wrel
- 1) * sizeof (*wrel
));
9018 wrel
->r_offset
+= 4;
9019 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
9023 /* Indirect .sdata relocation. */
9024 case R_PPC_EMB_SDAI16
:
9025 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
9026 if (!is_static_defined (htab
->sdata
[0].sym
))
9028 unresolved_reloc
= TRUE
;
9032 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
9033 h
, relocation
, rel
);
9037 /* Indirect .sdata2 relocation. */
9038 case R_PPC_EMB_SDA2I16
:
9039 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
9040 if (!is_static_defined (htab
->sdata
[1].sym
))
9042 unresolved_reloc
= TRUE
;
9046 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
9047 h
, relocation
, rel
);
9051 /* Handle the TOC16 reloc. We want to use the offset within the .got
9052 section, not the actual VMA. This is appropriate when generating
9053 an embedded ELF object, for which the .got section acts like the
9054 AIX .toc section. */
9055 case R_PPC_TOC16
: /* phony GOT16 relocations */
9056 if (sec
== NULL
|| sec
->output_section
== NULL
)
9058 unresolved_reloc
= TRUE
;
9061 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
9063 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
9066 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
9069 case R_PPC_PLTREL24
:
9070 if (h
!= NULL
&& ifunc
== NULL
)
9072 struct plt_entry
*ent
;
9074 ent
= find_plt_ent (&h
->plt
.plist
, got2
,
9075 bfd_link_pic (info
) ? addend
: 0);
9077 || htab
->elf
.splt
== NULL
)
9079 /* We didn't make a PLT entry for this symbol. This
9080 happens when statically linking PIC code, or when
9081 using -Bsymbolic. */
9085 /* Relocation is to the entry for this symbol in the
9086 procedure linkage table. */
9087 unresolved_reloc
= FALSE
;
9088 if (htab
->plt_type
== PLT_NEW
)
9089 relocation
= (htab
->glink
->output_section
->vma
9090 + htab
->glink
->output_offset
9091 + ent
->glink_offset
);
9093 relocation
= (htab
->elf
.splt
->output_section
->vma
9094 + htab
->elf
.splt
->output_offset
9099 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9100 addend specifies the GOT pointer offset within .got2.
9101 Don't apply it to the relocation field. */
9105 /* Relocate against _SDA_BASE_. */
9106 case R_PPC_SDAREL16
:
9109 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
9112 || sec
->output_section
== NULL
9113 || !is_static_defined (sda
))
9115 unresolved_reloc
= TRUE
;
9118 addend
-= SYM_VAL (sda
);
9120 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9121 if (!(strcmp (name
, ".sdata") == 0
9122 || strcmp (name
, ".sbss") == 0))
9124 info
->callbacks
->einfo
9125 /* xgettext:c-format */
9126 (_("%P: %B: the target (%s) of a %s relocation is "
9127 "in the wrong output section (%s)\n"),
9136 /* Relocate against _SDA2_BASE_. */
9137 case R_PPC_EMB_SDA2REL
:
9140 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
9143 || sec
->output_section
== NULL
9144 || !is_static_defined (sda
))
9146 unresolved_reloc
= TRUE
;
9149 addend
-= SYM_VAL (sda
);
9151 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9152 if (!(strcmp (name
, ".sdata2") == 0
9153 || strcmp (name
, ".sbss2") == 0))
9155 info
->callbacks
->einfo
9156 /* xgettext:c-format */
9157 (_("%P: %B: the target (%s) of a %s relocation is "
9158 "in the wrong output section (%s)\n"),
9167 case R_PPC_VLE_LO16A
:
9168 relocation
= relocation
+ addend
;
9169 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9170 contents
+ rel
->r_offset
, relocation
,
9171 split16a_type
, htab
->params
->vle_reloc_fixup
);
9174 case R_PPC_VLE_LO16D
:
9175 relocation
= relocation
+ addend
;
9176 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9177 contents
+ rel
->r_offset
, relocation
,
9178 split16d_type
, htab
->params
->vle_reloc_fixup
);
9181 case R_PPC_VLE_HI16A
:
9182 relocation
= (relocation
+ addend
) >> 16;
9183 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9184 contents
+ rel
->r_offset
, relocation
,
9185 split16a_type
, htab
->params
->vle_reloc_fixup
);
9188 case R_PPC_VLE_HI16D
:
9189 relocation
= (relocation
+ addend
) >> 16;
9190 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9191 contents
+ rel
->r_offset
, relocation
,
9192 split16d_type
, htab
->params
->vle_reloc_fixup
);
9195 case R_PPC_VLE_HA16A
:
9196 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9197 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9198 contents
+ rel
->r_offset
, relocation
,
9199 split16a_type
, htab
->params
->vle_reloc_fixup
);
9202 case R_PPC_VLE_HA16D
:
9203 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9204 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9205 contents
+ rel
->r_offset
, relocation
,
9206 split16d_type
, htab
->params
->vle_reloc_fixup
);
9209 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9210 case R_PPC_EMB_SDA21
:
9211 case R_PPC_VLE_SDA21
:
9212 case R_PPC_EMB_RELSDA
:
9213 case R_PPC_VLE_SDA21_LO
:
9218 struct elf_link_hash_entry
*sda
= NULL
;
9220 if (sec
== NULL
|| sec
->output_section
== NULL
)
9222 unresolved_reloc
= TRUE
;
9226 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9227 if (strcmp (name
, ".sdata") == 0
9228 || strcmp (name
, ".sbss") == 0)
9231 sda
= htab
->sdata
[0].sym
;
9233 else if (strcmp (name
, ".sdata2") == 0
9234 || strcmp (name
, ".sbss2") == 0)
9237 sda
= htab
->sdata
[1].sym
;
9239 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
9240 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
9246 info
->callbacks
->einfo
9247 /* xgettext:c-format */
9248 (_("%P: %B: the target (%s) of a %s relocation is "
9249 "in the wrong output section (%s)\n"),
9255 bfd_set_error (bfd_error_bad_value
);
9262 if (!is_static_defined (sda
))
9264 unresolved_reloc
= TRUE
;
9267 addend
-= SYM_VAL (sda
);
9270 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9272 && (r_type
== R_PPC_VLE_SDA21
9273 || r_type
== R_PPC_VLE_SDA21_LO
))
9275 relocation
= relocation
+ addend
;
9278 /* Force e_li insn, keeping RT from original insn. */
9282 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9283 /* Top 4 bits of value to 17..20. */
9284 insn
|= (relocation
& 0xf0000) >> 5;
9285 /* Next 5 bits of the value to 11..15. */
9286 insn
|= (relocation
& 0xf800) << 5;
9287 /* And the final 11 bits of the value to bits 21 to 31. */
9288 insn
|= relocation
& 0x7ff;
9290 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9292 if (r_type
== R_PPC_VLE_SDA21
9293 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
9297 else if (r_type
== R_PPC_EMB_SDA21
9298 || r_type
== R_PPC_VLE_SDA21
9299 || r_type
== R_PPC_VLE_SDA21_LO
)
9301 /* Fill in register field. */
9302 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
9304 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9308 case R_PPC_VLE_SDAREL_LO16A
:
9309 case R_PPC_VLE_SDAREL_LO16D
:
9310 case R_PPC_VLE_SDAREL_HI16A
:
9311 case R_PPC_VLE_SDAREL_HI16D
:
9312 case R_PPC_VLE_SDAREL_HA16A
:
9313 case R_PPC_VLE_SDAREL_HA16D
:
9317 struct elf_link_hash_entry
*sda
= NULL
;
9319 if (sec
== NULL
|| sec
->output_section
== NULL
)
9321 unresolved_reloc
= TRUE
;
9325 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9326 if (strcmp (name
, ".sdata") == 0
9327 || strcmp (name
, ".sbss") == 0)
9328 sda
= htab
->sdata
[0].sym
;
9329 else if (strcmp (name
, ".sdata2") == 0
9330 || strcmp (name
, ".sbss2") == 0)
9331 sda
= htab
->sdata
[1].sym
;
9335 /* xgettext:c-format */
9336 (_("%B: the target (%s) of a %s relocation is "
9337 "in the wrong output section (%s)"),
9343 bfd_set_error (bfd_error_bad_value
);
9348 if (sda
== NULL
|| !is_static_defined (sda
))
9350 unresolved_reloc
= TRUE
;
9353 value
= relocation
+ addend
- SYM_VAL (sda
);
9355 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
9356 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9357 contents
+ rel
->r_offset
, value
,
9359 htab
->params
->vle_reloc_fixup
);
9360 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
9361 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9362 contents
+ rel
->r_offset
, value
,
9364 htab
->params
->vle_reloc_fixup
);
9365 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
9367 value
= value
>> 16;
9368 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9369 contents
+ rel
->r_offset
, value
,
9371 htab
->params
->vle_reloc_fixup
);
9373 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
9375 value
= value
>> 16;
9376 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9377 contents
+ rel
->r_offset
, value
,
9379 htab
->params
->vle_reloc_fixup
);
9381 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
9383 value
= (value
+ 0x8000) >> 16;
9384 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9385 contents
+ rel
->r_offset
, value
,
9387 htab
->params
->vle_reloc_fixup
);
9389 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
9391 value
= (value
+ 0x8000) >> 16;
9392 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9393 contents
+ rel
->r_offset
, value
,
9395 htab
->params
->vle_reloc_fixup
);
9400 case R_PPC_VLE_ADDR20
:
9401 ppc_elf_vle_split20 (output_bfd
, contents
+ rel
->r_offset
, relocation
);
9404 /* Relocate against the beginning of the section. */
9406 case R_PPC_SECTOFF_LO
:
9407 case R_PPC_SECTOFF_HI
:
9408 case R_PPC_SECTOFF_HA
:
9409 if (sec
== NULL
|| sec
->output_section
== NULL
)
9411 unresolved_reloc
= TRUE
;
9414 addend
-= sec
->output_section
->vma
;
9417 /* Negative relocations. */
9418 case R_PPC_EMB_NADDR32
:
9419 case R_PPC_EMB_NADDR16
:
9420 case R_PPC_EMB_NADDR16_LO
:
9421 case R_PPC_EMB_NADDR16_HI
:
9422 case R_PPC_EMB_NADDR16_HA
:
9423 addend
-= 2 * relocation
;
9427 case R_PPC_GLOB_DAT
:
9428 case R_PPC_JMP_SLOT
:
9429 case R_PPC_RELATIVE
:
9430 case R_PPC_IRELATIVE
:
9432 case R_PPC_PLTREL32
:
9433 case R_PPC_PLT16_LO
:
9434 case R_PPC_PLT16_HI
:
9435 case R_PPC_PLT16_HA
:
9437 case R_PPC_EMB_RELSEC16
:
9438 case R_PPC_EMB_RELST_LO
:
9439 case R_PPC_EMB_RELST_HI
:
9440 case R_PPC_EMB_RELST_HA
:
9441 case R_PPC_EMB_BIT_FLD
:
9442 info
->callbacks
->einfo
9443 /* xgettext:c-format */
9444 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9449 bfd_set_error (bfd_error_invalid_operation
);
9454 /* Do any further special processing. */
9460 case R_PPC_ADDR16_HA
:
9461 case R_PPC_REL16_HA
:
9462 case R_PPC_REL16DX_HA
:
9463 case R_PPC_SECTOFF_HA
:
9464 case R_PPC_TPREL16_HA
:
9465 case R_PPC_DTPREL16_HA
:
9466 case R_PPC_EMB_NADDR16_HA
:
9467 case R_PPC_EMB_RELST_HA
:
9468 /* It's just possible that this symbol is a weak symbol
9469 that's not actually defined anywhere. In that case,
9470 'sec' would be NULL, and we should leave the symbol
9471 alone (it will be set to zero elsewhere in the link). */
9476 case R_PPC_PLT16_HA
:
9477 case R_PPC_GOT16_HA
:
9478 case R_PPC_GOT_TLSGD16_HA
:
9479 case R_PPC_GOT_TLSLD16_HA
:
9480 case R_PPC_GOT_TPREL16_HA
:
9481 case R_PPC_GOT_DTPREL16_HA
:
9482 /* Add 0x10000 if sign bit in 0:15 is set.
9483 Bits 0:15 are not used. */
9488 case R_PPC_ADDR16_LO
:
9490 case R_PPC_GOT16_LO
:
9491 case R_PPC_SDAREL16
:
9493 case R_PPC_SECTOFF_LO
:
9494 case R_PPC_DTPREL16
:
9495 case R_PPC_DTPREL16_LO
:
9497 case R_PPC_TPREL16_LO
:
9498 case R_PPC_GOT_TLSGD16
:
9499 case R_PPC_GOT_TLSGD16_LO
:
9500 case R_PPC_GOT_TLSLD16
:
9501 case R_PPC_GOT_TLSLD16_LO
:
9502 case R_PPC_GOT_DTPREL16
:
9503 case R_PPC_GOT_DTPREL16_LO
:
9504 case R_PPC_GOT_TPREL16
:
9505 case R_PPC_GOT_TPREL16_LO
:
9507 /* The 32-bit ABI lacks proper relocations to deal with
9508 certain 64-bit instructions. Prevent damage to bits
9509 that make up part of the insn opcode. */
9510 unsigned int insn
, mask
, lobit
;
9512 insn
= bfd_get_32 (input_bfd
,
9513 contents
+ rel
->r_offset
- d_offset
);
9515 if (is_insn_ds_form (insn
))
9517 else if (is_insn_dq_form (insn
))
9521 relocation
+= addend
;
9522 addend
= insn
& mask
;
9523 lobit
= mask
& relocation
;
9526 relocation
^= lobit
;
9527 info
->callbacks
->einfo
9528 /* xgettext:c-format */
9529 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9530 input_bfd
, input_section
, rel
->r_offset
,
9531 howto
->name
, sym_name
, mask
+ 1);
9532 bfd_set_error (bfd_error_bad_value
);
9540 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9541 "offset = %ld, addend = %ld\n",
9546 (long) rel
->r_offset
,
9550 if (unresolved_reloc
9551 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9553 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9554 rel
->r_offset
) != (bfd_vma
) -1)
9556 info
->callbacks
->einfo
9557 /* xgettext:c-format */
9558 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9559 input_bfd
, input_section
, rel
->r_offset
,
9565 /* 16-bit fields in insns mostly have signed values, but a
9566 few insns have 16-bit unsigned values. Really, we should
9567 have different reloc types. */
9568 if (howto
->complain_on_overflow
!= complain_overflow_dont
9569 && howto
->dst_mask
== 0xffff
9570 && (input_section
->flags
& SEC_CODE
) != 0)
9572 enum complain_overflow complain
= complain_overflow_signed
;
9574 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9578 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9579 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9580 complain
= complain_overflow_bitfield
;
9581 else if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9582 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9583 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
9584 complain
= complain_overflow_unsigned
;
9586 if (howto
->complain_on_overflow
!= complain
)
9589 alt_howto
.complain_on_overflow
= complain
;
9594 if (r_type
== R_PPC_REL16DX_HA
)
9596 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9597 if (rel
->r_offset
+ 4 > input_section
->size
)
9598 r
= bfd_reloc_outofrange
;
9603 relocation
+= addend
;
9604 relocation
-= (rel
->r_offset
9605 + input_section
->output_offset
9606 + input_section
->output_section
->vma
);
9608 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9610 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
9611 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9616 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9617 rel
->r_offset
, relocation
, addend
);
9619 if (r
!= bfd_reloc_ok
)
9621 if (r
== bfd_reloc_overflow
)
9624 /* On code like "if (foo) foo();" don't report overflow
9625 on a branch to zero when foo is undefined. */
9628 && (h
->root
.type
== bfd_link_hash_undefweak
9629 || h
->root
.type
== bfd_link_hash_undefined
)
9630 && is_branch_reloc (r_type
)))
9631 info
->callbacks
->reloc_overflow
9632 (info
, (h
? &h
->root
: NULL
), sym_name
, howto
->name
,
9633 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
);
9637 info
->callbacks
->einfo
9638 /* xgettext:c-format */
9639 (_("%H: %s reloc against `%s': error %d\n"),
9640 input_bfd
, input_section
, rel
->r_offset
,
9641 howto
->name
, sym_name
, (int) r
);
9652 Elf_Internal_Shdr
*rel_hdr
;
9653 size_t deleted
= rel
- wrel
;
9655 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
9656 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9657 if (rel_hdr
->sh_size
== 0)
9659 /* It is too late to remove an empty reloc section. Leave
9661 ??? What is wrong with an empty section??? */
9662 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
9667 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
9668 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9669 input_section
->reloc_count
-= deleted
;
9673 fprintf (stderr
, "\n");
9676 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9677 && input_section
->size
!= input_section
->rawsize
9678 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9679 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9681 /* Branch around the trampolines. */
9682 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9683 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9686 if (htab
->params
->ppc476_workaround
9687 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9688 && (!bfd_link_relocatable (info
)
9689 || (input_section
->output_section
->alignment_power
9690 >= htab
->params
->pagesize_p2
)))
9692 bfd_vma start_addr
, end_addr
, addr
;
9693 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9695 if (relax_info
->workaround_size
!= 0)
9701 bfd_put_32 (input_bfd
, BA
, fill
);
9702 p
= contents
+ input_section
->size
- relax_info
->workaround_size
;
9703 n
= relax_info
->workaround_size
>> 2;
9706 memcpy (p
, fill
, 4);
9711 /* The idea is: Replace the last instruction on a page with a
9712 branch to a patch area. Put the insn there followed by a
9713 branch back to the next page. Complicated a little by
9714 needing to handle moved conditional branches, and by not
9715 wanting to touch data-in-text. */
9717 start_addr
= (input_section
->output_section
->vma
9718 + input_section
->output_offset
);
9719 end_addr
= (start_addr
+ input_section
->size
9720 - relax_info
->workaround_size
);
9721 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9725 bfd_vma offset
= addr
- start_addr
;
9726 Elf_Internal_Rela
*lo
, *hi
;
9727 bfd_boolean is_data
;
9728 bfd_vma patch_off
, patch_addr
;
9731 /* Do we have a data reloc at this offset? If so, leave
9739 rel
= lo
+ (hi
- lo
) / 2;
9740 if (rel
->r_offset
< offset
)
9742 else if (rel
->r_offset
> offset
+ 3)
9746 switch (ELF32_R_TYPE (rel
->r_info
))
9763 /* Some instructions can be left alone too. Unconditional
9764 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9765 avoid the icache failure.
9767 The problem occurs due to prefetch across a page boundary
9768 where stale instructions can be fetched from the next
9769 page, and the mechanism for flushing these bad
9770 instructions fails under certain circumstances. The
9771 unconditional branches:
9772 1) Branch: b, bl, ba, bla,
9773 2) Branch Conditional: bc, bca, bcl, bcla,
9774 3) Branch Conditional to Link Register: bclr, bclrl,
9775 where (2) and (3) have BO=0x14 making them unconditional,
9776 prevent the bad prefetch because the prefetch itself is
9777 affected by these instructions. This happens even if the
9778 instruction is not executed.
9783 . addi 9,9,new_page@l
9790 The bctr is not predicted taken due to ctr not being
9791 ready, so prefetch continues on past the bctr into the
9792 new page which might have stale instructions. If they
9793 fail to be flushed, then they will be executed after the
9794 bctr executes. Either of the following modifications
9795 prevent the bad prefetch from happening in the first
9798 . lis 9,new_page@ha lis 9,new_page@ha
9799 . addi 9,9,new_page@l addi 9,9,new_page@l
9802 . nop b somewhere_else
9803 . b somewhere_else nop
9804 . new_page: new_page:
9806 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9807 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9808 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9809 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9810 || ((insn
& (0x3f << 26)) == (19u << 26)
9811 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9812 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9815 patch_addr
= (start_addr
+ input_section
->size
9816 - relax_info
->workaround_size
);
9817 patch_addr
= (patch_addr
+ 15) & -16;
9818 patch_off
= patch_addr
- start_addr
;
9819 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9822 && rel
->r_offset
>= offset
9823 && rel
->r_offset
< offset
+ 4)
9827 /* If the insn we are patching had a reloc, adjust the
9828 reloc r_offset so that the reloc applies to the moved
9829 location. This matters for -r and --emit-relocs. */
9830 if (rel
+ 1 != relend
)
9832 Elf_Internal_Rela tmp
= *rel
;
9834 /* Keep the relocs sorted by r_offset. */
9835 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9838 relend
[-1].r_offset
+= patch_off
- offset
;
9840 /* Adjust REL16 addends too. */
9841 switch (ELF32_R_TYPE (relend
[-1].r_info
))
9844 case R_PPC_REL16_LO
:
9845 case R_PPC_REL16_HI
:
9846 case R_PPC_REL16_HA
:
9847 relend
[-1].r_addend
+= patch_off
- offset
;
9853 /* If we are building a PIE or shared library with
9854 non-PIC objects, perhaps we had a dynamic reloc too?
9855 If so, the dynamic reloc must move with the insn. */
9856 sreloc
= elf_section_data (input_section
)->sreloc
;
9859 Elf32_External_Rela
*slo
, *shi
, *srelend
;
9862 slo
= (Elf32_External_Rela
*) sreloc
->contents
;
9863 shi
= srelend
= slo
+ sreloc
->reloc_count
;
9864 soffset
= (offset
+ input_section
->output_section
->vma
9865 + input_section
->output_offset
);
9868 Elf32_External_Rela
*srel
= slo
+ (shi
- slo
) / 2;
9869 bfd_elf32_swap_reloca_in (output_bfd
, (bfd_byte
*) srel
,
9871 if (outrel
.r_offset
< soffset
)
9873 else if (outrel
.r_offset
> soffset
+ 3)
9877 if (srel
+ 1 != srelend
)
9879 memmove (srel
, srel
+ 1,
9880 (srelend
- (srel
+ 1)) * sizeof (*srel
));
9883 outrel
.r_offset
+= patch_off
- offset
;
9884 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
9894 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9895 && (insn
& 2) == 0 /* relative */)
9897 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
9899 delta
+= offset
- patch_off
;
9900 if (bfd_link_relocatable (info
) && rel
!= NULL
)
9902 if (!bfd_link_relocatable (info
) && rel
!= NULL
)
9904 enum elf_ppc_reloc_type r_type
;
9906 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
9907 if (r_type
== R_PPC_REL14_BRTAKEN
)
9908 insn
|= BRANCH_PREDICT_BIT
;
9909 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
9910 insn
&= ~BRANCH_PREDICT_BIT
;
9912 BFD_ASSERT (r_type
== R_PPC_REL14
);
9914 if ((r_type
== R_PPC_REL14_BRTAKEN
9915 || r_type
== R_PPC_REL14_BRNTAKEN
)
9916 && delta
+ 0x8000 < 0x10000
9917 && (bfd_signed_vma
) delta
< 0)
9918 insn
^= BRANCH_PREDICT_BIT
;
9920 if (delta
+ 0x8000 < 0x10000)
9922 bfd_put_32 (input_bfd
,
9923 (insn
& ~0xfffc) | (delta
& 0xfffc),
9924 contents
+ patch_off
);
9926 bfd_put_32 (input_bfd
,
9927 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9928 contents
+ patch_off
);
9935 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
9937 relend
[-1].r_offset
+= 8;
9938 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
9940 bfd_put_32 (input_bfd
,
9941 (insn
& ~0xfffc) | 8,
9942 contents
+ patch_off
);
9944 bfd_put_32 (input_bfd
,
9945 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9946 contents
+ patch_off
);
9948 bfd_put_32 (input_bfd
,
9949 B
| ((delta
- 8) & 0x3fffffc),
9950 contents
+ patch_off
);
9956 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
9958 bfd_put_32 (input_bfd
,
9959 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9960 contents
+ patch_off
);
9963 BFD_ASSERT (patch_off
<= input_section
->size
);
9964 relax_info
->workaround_size
= input_section
->size
- patch_off
;
9971 /* Finish up dynamic symbol handling. We set the contents of various
9972 dynamic sections here. */
9975 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9976 struct bfd_link_info
*info
,
9977 struct elf_link_hash_entry
*h
,
9978 Elf_Internal_Sym
*sym
)
9980 struct ppc_elf_link_hash_table
*htab
;
9981 struct plt_entry
*ent
;
9982 bfd_boolean doneone
;
9985 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
9986 h
->root
.root
.string
);
9989 htab
= ppc_elf_hash_table (info
);
9990 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
9993 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9994 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9998 Elf_Internal_Rela rela
;
10000 bfd_vma reloc_index
;
10002 if (htab
->plt_type
== PLT_NEW
10003 || !htab
->elf
.dynamic_sections_created
10004 || h
->dynindx
== -1)
10005 reloc_index
= ent
->plt
.offset
/ 4;
10008 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
10009 / htab
->plt_slot_size
);
10010 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
10011 && htab
->plt_type
== PLT_OLD
)
10012 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
10015 /* This symbol has an entry in the procedure linkage table.
10017 if (htab
->plt_type
== PLT_VXWORKS
10018 && htab
->elf
.dynamic_sections_created
10019 && h
->dynindx
!= -1)
10021 bfd_vma got_offset
;
10022 const bfd_vma
*plt_entry
;
10024 /* The first three entries in .got.plt are reserved. */
10025 got_offset
= (reloc_index
+ 3) * 4;
10027 /* Use the right PLT. */
10028 plt_entry
= bfd_link_pic (info
) ? ppc_elf_vxworks_pic_plt_entry
10029 : ppc_elf_vxworks_plt_entry
;
10031 /* Fill in the .plt on VxWorks. */
10032 if (bfd_link_pic (info
))
10034 bfd_put_32 (output_bfd
,
10035 plt_entry
[0] | PPC_HA (got_offset
),
10036 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 0);
10037 bfd_put_32 (output_bfd
,
10038 plt_entry
[1] | PPC_LO (got_offset
),
10039 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 4);
10043 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
10045 bfd_put_32 (output_bfd
,
10046 plt_entry
[0] | PPC_HA (got_loc
),
10047 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 0);
10048 bfd_put_32 (output_bfd
,
10049 plt_entry
[1] | PPC_LO (got_loc
),
10050 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 4);
10053 bfd_put_32 (output_bfd
, plt_entry
[2],
10054 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 8);
10055 bfd_put_32 (output_bfd
, plt_entry
[3],
10056 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 12);
10058 /* This instruction is an immediate load. The value loaded is
10059 the byte offset of the R_PPC_JMP_SLOT relocation from the
10060 start of the .rela.plt section. The value is stored in the
10061 low-order 16 bits of the load instruction. */
10062 /* NOTE: It appears that this is now an index rather than a
10063 prescaled offset. */
10064 bfd_put_32 (output_bfd
,
10065 plt_entry
[4] | reloc_index
,
10066 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 16);
10067 /* This instruction is a PC-relative branch whose target is
10068 the start of the PLT section. The address of this branch
10069 instruction is 20 bytes beyond the start of this PLT entry.
10070 The address is encoded in bits 6-29, inclusive. The value
10071 stored is right-shifted by two bits, permitting a 26-bit
10073 bfd_put_32 (output_bfd
,
10075 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
10076 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 20);
10077 bfd_put_32 (output_bfd
, plt_entry
[6],
10078 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 24);
10079 bfd_put_32 (output_bfd
, plt_entry
[7],
10080 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 28);
10082 /* Fill in the GOT entry corresponding to this PLT slot with
10083 the address immediately after the "bctr" instruction
10084 in this PLT entry. */
10085 bfd_put_32 (output_bfd
, (htab
->elf
.splt
->output_section
->vma
10086 + htab
->elf
.splt
->output_offset
10087 + ent
->plt
.offset
+ 16),
10088 htab
->elf
.sgotplt
->contents
+ got_offset
);
10090 if (!bfd_link_pic (info
))
10092 /* Fill in a couple of entries in .rela.plt.unloaded. */
10093 loc
= htab
->srelplt2
->contents
10094 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
10095 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
10096 * sizeof (Elf32_External_Rela
));
10098 /* Provide the @ha relocation for the first instruction. */
10099 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10100 + htab
->elf
.splt
->output_offset
10101 + ent
->plt
.offset
+ 2);
10102 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10104 rela
.r_addend
= got_offset
;
10105 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10106 loc
+= sizeof (Elf32_External_Rela
);
10108 /* Provide the @l relocation for the second instruction. */
10109 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10110 + htab
->elf
.splt
->output_offset
10111 + ent
->plt
.offset
+ 6);
10112 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10114 rela
.r_addend
= got_offset
;
10115 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10116 loc
+= sizeof (Elf32_External_Rela
);
10118 /* Provide a relocation for the GOT entry corresponding to this
10119 PLT slot. Point it at the middle of the .plt entry. */
10120 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
10121 + htab
->elf
.sgotplt
->output_offset
10123 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
10125 rela
.r_addend
= ent
->plt
.offset
+ 16;
10126 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10129 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10130 In particular, the offset for the relocation is not the
10131 address of the PLT entry for this function, as specified
10132 by the ABI. Instead, the offset is set to the address of
10133 the GOT slot for this function. See EABI 4.4.4.1. */
10134 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
10135 + htab
->elf
.sgotplt
->output_offset
10141 asection
*splt
= htab
->elf
.splt
;
10142 if (!htab
->elf
.dynamic_sections_created
10143 || h
->dynindx
== -1)
10144 splt
= htab
->elf
.iplt
;
10146 rela
.r_offset
= (splt
->output_section
->vma
10147 + splt
->output_offset
10148 + ent
->plt
.offset
);
10149 if (htab
->plt_type
== PLT_OLD
10150 || !htab
->elf
.dynamic_sections_created
10151 || h
->dynindx
== -1)
10153 /* We don't need to fill in the .plt. The ppc dynamic
10154 linker will fill it in. */
10158 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
10159 + htab
->glink
->output_section
->vma
10160 + htab
->glink
->output_offset
);
10161 bfd_put_32 (output_bfd
, val
,
10162 splt
->contents
+ ent
->plt
.offset
);
10166 /* Fill in the entry in the .rela.plt section. */
10168 if (!htab
->elf
.dynamic_sections_created
10169 || h
->dynindx
== -1)
10171 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
10173 && (h
->root
.type
== bfd_link_hash_defined
10174 || h
->root
.type
== bfd_link_hash_defweak
));
10175 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
10176 rela
.r_addend
= SYM_VAL (h
);
10179 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
10181 if (!htab
->elf
.dynamic_sections_created
10182 || h
->dynindx
== -1)
10184 loc
= (htab
->elf
.irelplt
->contents
10185 + (htab
->elf
.irelplt
->reloc_count
++
10186 * sizeof (Elf32_External_Rela
)));
10187 htab
->local_ifunc_resolver
= 1;
10191 loc
= (htab
->elf
.srelplt
->contents
10192 + reloc_index
* sizeof (Elf32_External_Rela
));
10193 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
10194 htab
->maybe_local_ifunc_resolver
= 1;
10196 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10198 if (!h
->def_regular
)
10200 /* Mark the symbol as undefined, rather than as
10201 defined in the .plt section. Leave the value if
10202 there were any relocations where pointer equality
10203 matters (this is a clue for the dynamic linker, to
10204 make function pointer comparisons work between an
10205 application and shared library), otherwise set it
10207 sym
->st_shndx
= SHN_UNDEF
;
10208 if (!h
->pointer_equality_needed
)
10210 else if (!h
->ref_regular_nonweak
)
10212 /* This breaks function pointer comparisons, but
10213 that is better than breaking tests for a NULL
10214 function pointer. */
10218 else if (h
->type
== STT_GNU_IFUNC
10219 && !bfd_link_pic (info
))
10221 /* Set the value of ifunc symbols in a non-pie
10222 executable to the glink entry. This is to avoid
10223 text relocations. We can't do this for ifunc in
10224 allocate_dynrelocs, as we do for normal dynamic
10225 function symbols with plt entries, because we need
10226 to keep the original value around for the ifunc
10228 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
10229 (output_bfd
, htab
->glink
->output_section
));
10230 sym
->st_value
= (ent
->glink_offset
10231 + htab
->glink
->output_offset
10232 + htab
->glink
->output_section
->vma
);
10237 if (htab
->plt_type
== PLT_NEW
10238 || !htab
->elf
.dynamic_sections_created
10239 || h
->dynindx
== -1)
10242 asection
*splt
= htab
->elf
.splt
;
10244 if (!htab
->elf
.dynamic_sections_created
10245 || h
->dynindx
== -1)
10246 splt
= htab
->elf
.iplt
;
10248 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
10249 write_glink_stub (h
, ent
, splt
, p
, info
);
10251 if (!bfd_link_pic (info
))
10252 /* We only need one non-PIC glink stub. */
10262 Elf_Internal_Rela rela
;
10265 /* This symbols needs a copy reloc. Set it up. */
10268 fprintf (stderr
, ", copy");
10271 BFD_ASSERT (h
->dynindx
!= -1);
10273 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
10275 else if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
10276 s
= htab
->elf
.sreldynrelro
;
10278 s
= htab
->elf
.srelbss
;
10279 BFD_ASSERT (s
!= NULL
);
10281 rela
.r_offset
= SYM_VAL (h
);
10282 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
10284 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
10285 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10289 fprintf (stderr
, "\n");
10295 static enum elf_reloc_type_class
10296 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
10297 const asection
*rel_sec
,
10298 const Elf_Internal_Rela
*rela
)
10300 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
10302 if (rel_sec
== htab
->elf
.irelplt
)
10303 return reloc_class_ifunc
;
10305 switch (ELF32_R_TYPE (rela
->r_info
))
10307 case R_PPC_RELATIVE
:
10308 return reloc_class_relative
;
10309 case R_PPC_JMP_SLOT
:
10310 return reloc_class_plt
;
10312 return reloc_class_copy
;
10314 return reloc_class_normal
;
10318 /* Finish up the dynamic sections. */
10321 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
10322 struct bfd_link_info
*info
)
10325 struct ppc_elf_link_hash_table
*htab
;
10328 bfd_boolean ret
= TRUE
;
10331 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
10334 htab
= ppc_elf_hash_table (info
);
10335 dynobj
= htab
->elf
.dynobj
;
10336 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
10339 if (htab
->elf
.hgot
!= NULL
)
10340 got
= SYM_VAL (htab
->elf
.hgot
);
10342 if (htab
->elf
.dynamic_sections_created
)
10344 Elf32_External_Dyn
*dyncon
, *dynconend
;
10346 BFD_ASSERT (htab
->elf
.splt
!= NULL
&& sdyn
!= NULL
);
10348 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
10349 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10350 for (; dyncon
< dynconend
; dyncon
++)
10352 Elf_Internal_Dyn dyn
;
10355 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10360 if (htab
->is_vxworks
)
10361 s
= htab
->elf
.sgotplt
;
10363 s
= htab
->elf
.splt
;
10364 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10368 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
10372 s
= htab
->elf
.srelplt
;
10373 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10377 dyn
.d_un
.d_ptr
= got
;
10381 if (htab
->local_ifunc_resolver
)
10382 info
->callbacks
->einfo
10383 (_("%X%P: text relocations and GNU indirect "
10384 "functions will result in a segfault at runtime\n"));
10385 else if (htab
->maybe_local_ifunc_resolver
)
10386 info
->callbacks
->einfo
10387 (_("%P: warning: text relocations and GNU indirect "
10388 "functions may result in a segfault at runtime\n"));
10392 if (htab
->is_vxworks
10393 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
10398 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10402 if (htab
->elf
.sgot
!= NULL
10403 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
10405 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->elf
.sgot
10406 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->elf
.sgotplt
)
10408 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
10410 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
10411 if (htab
->plt_type
== PLT_OLD
)
10413 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10414 so that a function can easily find the address of
10415 _GLOBAL_OFFSET_TABLE_. */
10416 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
10417 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10418 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
10423 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
10424 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
10425 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10426 bfd_put_32 (output_bfd
, val
, p
);
10431 /* xgettext:c-format */
10432 info
->callbacks
->einfo (_("%P: %s not defined in linker created %s\n"),
10433 htab
->elf
.hgot
->root
.root
.string
,
10434 (htab
->elf
.sgotplt
!= NULL
10435 ? htab
->elf
.sgotplt
->name
10436 : htab
->elf
.sgot
->name
));
10437 bfd_set_error (bfd_error_bad_value
);
10441 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
10444 /* Fill in the first entry in the VxWorks procedure linkage table. */
10445 if (htab
->is_vxworks
10446 && htab
->elf
.splt
!= NULL
10447 && htab
->elf
.splt
->size
!= 0
10448 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
10450 asection
*splt
= htab
->elf
.splt
;
10451 /* Use the right PLT. */
10452 const bfd_vma
*plt_entry
= (bfd_link_pic (info
)
10453 ? ppc_elf_vxworks_pic_plt0_entry
10454 : ppc_elf_vxworks_plt0_entry
);
10456 if (!bfd_link_pic (info
))
10458 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
10460 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
10461 splt
->contents
+ 0);
10462 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
10463 splt
->contents
+ 4);
10467 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
10468 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
10470 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
10471 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
10472 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
10473 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
10474 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
10475 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
10477 if (! bfd_link_pic (info
))
10479 Elf_Internal_Rela rela
;
10482 loc
= htab
->srelplt2
->contents
;
10484 /* Output the @ha relocation for the first instruction. */
10485 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10486 + htab
->elf
.splt
->output_offset
10488 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10490 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10491 loc
+= sizeof (Elf32_External_Rela
);
10493 /* Output the @l relocation for the second instruction. */
10494 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10495 + htab
->elf
.splt
->output_offset
10497 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10499 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10500 loc
+= sizeof (Elf32_External_Rela
);
10502 /* Fix up the remaining relocations. They may have the wrong
10503 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10504 in which symbols were output. */
10505 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
10507 Elf_Internal_Rela rel
;
10509 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10510 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10511 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10512 loc
+= sizeof (Elf32_External_Rela
);
10514 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10515 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10516 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10517 loc
+= sizeof (Elf32_External_Rela
);
10519 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10520 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
10521 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10522 loc
+= sizeof (Elf32_External_Rela
);
10527 if (htab
->glink
!= NULL
10528 && htab
->glink
->contents
!= NULL
10529 && htab
->elf
.dynamic_sections_created
)
10532 unsigned char *endp
;
10536 * PIC glink code is the following:
10538 * # ith PLT code stub.
10539 * addis 11,30,(plt+(i-1)*4-got)@ha
10540 * lwz 11,(plt+(i-1)*4-got)@l(11)
10544 * # A table of branches, one for each plt entry.
10545 * # The idea is that the plt call stub loads ctr and r11 with these
10546 * # addresses, so (r11 - res_0) gives the plt index * 4.
10547 * res_0: b PLTresolve
10548 * res_1: b PLTresolve
10550 * # Some number of entries towards the end can be nops
10556 * addis 11,11,(1f-res_0)@ha
10559 * 1: addi 11,11,(1b-res_0)@l
10562 * sub 11,11,12 # r11 = index * 4
10563 * addis 12,12,(got+4-1b)@ha
10564 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10565 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10568 * add 11,0,11 # r11 = index * 12 = reloc offset.
10571 * Non-PIC glink code is a little simpler.
10573 * # ith PLT code stub.
10574 * lis 11,(plt+(i-1)*4)@ha
10575 * lwz 11,(plt+(i-1)*4)@l(11)
10579 * The branch table is the same, then comes
10582 * lis 12,(got+4)@ha
10583 * addis 11,11,(-res_0)@ha
10584 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10585 * addi 11,11,(-res_0)@l # r11 = index * 4
10588 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10589 * add 11,0,11 # r11 = index * 12 = reloc offset.
10593 /* Build the branch table, one for each plt entry (less one),
10594 and perhaps some padding. */
10595 p
= htab
->glink
->contents
;
10596 p
+= htab
->glink_pltresolve
;
10597 endp
= htab
->glink
->contents
;
10598 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10599 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10601 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10606 bfd_put_32 (output_bfd
, NOP
, p
);
10610 res0
= (htab
->glink_pltresolve
10611 + htab
->glink
->output_section
->vma
10612 + htab
->glink
->output_offset
);
10614 if (htab
->params
->ppc476_workaround
)
10616 /* Ensure that a call stub at the end of a page doesn't
10617 result in prefetch over the end of the page into the
10618 glink branch table. */
10619 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10621 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10622 + htab
->glink
->output_offset
);
10624 for (page_addr
= res0
& -pagesize
;
10625 page_addr
> glink_start
;
10626 page_addr
-= pagesize
)
10628 /* We have a plt call stub that may need fixing. */
10632 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10633 insn
= bfd_get_32 (output_bfd
, loc
);
10636 /* By alignment, we know that there must be at least
10637 one other call stub before this one. */
10638 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10640 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10642 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10647 /* Last comes the PLTresolve stub. */
10648 endp
= p
+ GLINK_PLTRESOLVE
;
10649 if (bfd_link_pic (info
))
10653 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10654 + htab
->glink
->output_section
->vma
10655 + htab
->glink
->output_offset
);
10657 bfd_put_32 (output_bfd
, ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
);
10659 bfd_put_32 (output_bfd
, MFLR_0
, p
);
10661 bfd_put_32 (output_bfd
, BCL_20_31
, p
);
10663 bfd_put_32 (output_bfd
, ADDI_11_11
+ PPC_LO (bcl
- res0
), p
);
10665 bfd_put_32 (output_bfd
, MFLR_12
, p
);
10667 bfd_put_32 (output_bfd
, MTLR_0
, p
);
10669 bfd_put_32 (output_bfd
, SUB_11_11_12
, p
);
10671 bfd_put_32 (output_bfd
, ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
);
10673 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10675 bfd_put_32 (output_bfd
, LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
);
10677 bfd_put_32 (output_bfd
, LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
);
10682 bfd_put_32 (output_bfd
, LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
);
10684 bfd_put_32 (output_bfd
, LWZ_12_12
+ 4, p
);
10687 bfd_put_32 (output_bfd
, MTCTR_0
, p
);
10689 bfd_put_32 (output_bfd
, ADD_0_11_11
, p
);
10693 bfd_put_32 (output_bfd
, LIS_12
+ PPC_HA (got
+ 4), p
);
10695 bfd_put_32 (output_bfd
, ADDIS_11_11
+ PPC_HA (-res0
), p
);
10697 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10698 bfd_put_32 (output_bfd
, LWZ_0_12
+ PPC_LO (got
+ 4), p
);
10700 bfd_put_32 (output_bfd
, LWZU_0_12
+ PPC_LO (got
+ 4), p
);
10702 bfd_put_32 (output_bfd
, ADDI_11_11
+ PPC_LO (-res0
), p
);
10704 bfd_put_32 (output_bfd
, MTCTR_0
, p
);
10706 bfd_put_32 (output_bfd
, ADD_0_11_11
, p
);
10708 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10709 bfd_put_32 (output_bfd
, LWZ_12_12
+ PPC_LO (got
+ 8), p
);
10711 bfd_put_32 (output_bfd
, LWZ_12_12
+ 4, p
);
10714 bfd_put_32 (output_bfd
, ADD_11_0_11
, p
);
10716 p
= output_bctr (htab
, output_bfd
, p
);
10719 bfd_put_32 (output_bfd
,
10720 htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
10723 BFD_ASSERT (p
== endp
);
10726 if (htab
->glink_eh_frame
!= NULL
10727 && htab
->glink_eh_frame
->contents
!= NULL
)
10729 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10732 p
+= sizeof (glink_eh_frame_cie
);
10737 /* Offset to .glink. */
10738 val
= (htab
->glink
->output_section
->vma
10739 + htab
->glink
->output_offset
);
10740 val
-= (htab
->glink_eh_frame
->output_section
->vma
10741 + htab
->glink_eh_frame
->output_offset
);
10742 val
-= p
- htab
->glink_eh_frame
->contents
;
10743 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10745 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10746 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10747 htab
->glink_eh_frame
,
10748 htab
->glink_eh_frame
->contents
))
10755 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10756 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10757 #define TARGET_BIG_SYM powerpc_elf32_vec
10758 #define TARGET_BIG_NAME "elf32-powerpc"
10759 #define ELF_ARCH bfd_arch_powerpc
10760 #define ELF_TARGET_ID PPC32_ELF_DATA
10761 #define ELF_MACHINE_CODE EM_PPC
10762 #ifdef __QNXTARGET__
10763 #define ELF_MAXPAGESIZE 0x1000
10764 #define ELF_COMMONPAGESIZE 0x1000
10766 #define ELF_MAXPAGESIZE 0x10000
10767 #define ELF_COMMONPAGESIZE 0x10000
10769 #define ELF_MINPAGESIZE 0x1000
10770 #define elf_info_to_howto ppc_elf_info_to_howto
10772 #ifdef EM_CYGNUS_POWERPC
10773 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10777 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10780 #define elf_backend_plt_not_loaded 1
10781 #define elf_backend_want_dynrelro 1
10782 #define elf_backend_can_gc_sections 1
10783 #define elf_backend_can_refcount 1
10784 #define elf_backend_rela_normal 1
10785 #define elf_backend_caches_rawsize 1
10787 #define bfd_elf32_mkobject ppc_elf_mkobject
10788 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10789 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10790 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10791 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10792 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10793 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10794 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10796 #define elf_backend_object_p ppc_elf_object_p
10797 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10798 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10799 #define elf_backend_relocate_section ppc_elf_relocate_section
10800 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10801 #define elf_backend_check_relocs ppc_elf_check_relocs
10802 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10803 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10804 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10805 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10806 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10807 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10808 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10809 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10810 #define elf_backend_fake_sections ppc_elf_fake_sections
10811 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10812 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10813 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10814 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10815 #define elf_backend_write_core_note ppc_elf_write_core_note
10816 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10817 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10818 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10819 #define elf_backend_write_section ppc_elf_write_section
10820 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10821 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10822 #define elf_backend_action_discarded ppc_elf_action_discarded
10823 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10824 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10826 #include "elf32-target.h"
10828 /* FreeBSD Target */
10830 #undef TARGET_LITTLE_SYM
10831 #undef TARGET_LITTLE_NAME
10833 #undef TARGET_BIG_SYM
10834 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10835 #undef TARGET_BIG_NAME
10836 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10839 #define ELF_OSABI ELFOSABI_FREEBSD
10842 #define elf32_bed elf32_powerpc_fbsd_bed
10844 #include "elf32-target.h"
10846 /* VxWorks Target */
10848 #undef TARGET_LITTLE_SYM
10849 #undef TARGET_LITTLE_NAME
10851 #undef TARGET_BIG_SYM
10852 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10853 #undef TARGET_BIG_NAME
10854 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10858 /* VxWorks uses the elf default section flags for .plt. */
10859 static const struct bfd_elf_special_section
*
10860 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd
, asection
*sec
)
10862 if (sec
->name
== NULL
)
10865 if (strcmp (sec
->name
, ".plt") == 0)
10866 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
10868 return ppc_elf_get_sec_type_attr (abfd
, sec
);
10871 /* Like ppc_elf_link_hash_table_create, but overrides
10872 appropriately for VxWorks. */
10873 static struct bfd_link_hash_table
*
10874 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
10876 struct bfd_link_hash_table
*ret
;
10878 ret
= ppc_elf_link_hash_table_create (abfd
);
10881 struct ppc_elf_link_hash_table
*htab
10882 = (struct ppc_elf_link_hash_table
*)ret
;
10883 htab
->is_vxworks
= 1;
10884 htab
->plt_type
= PLT_VXWORKS
;
10885 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
10886 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
10887 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
10892 /* Tweak magic VxWorks symbols as they are loaded. */
10894 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
10895 struct bfd_link_info
*info
,
10896 Elf_Internal_Sym
*sym
,
10897 const char **namep
,
10902 if (!elf_vxworks_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
,
10906 return ppc_elf_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
, valp
);
10910 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10912 ppc_elf_final_write_processing (abfd
, linker
);
10913 elf_vxworks_final_write_processing (abfd
, linker
);
10916 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10918 #undef elf_backend_want_plt_sym
10919 #define elf_backend_want_plt_sym 1
10920 #undef elf_backend_want_got_plt
10921 #define elf_backend_want_got_plt 1
10922 #undef elf_backend_got_symbol_offset
10923 #define elf_backend_got_symbol_offset 0
10924 #undef elf_backend_plt_not_loaded
10925 #define elf_backend_plt_not_loaded 0
10926 #undef elf_backend_plt_readonly
10927 #define elf_backend_plt_readonly 1
10928 #undef elf_backend_got_header_size
10929 #define elf_backend_got_header_size 12
10930 #undef elf_backend_dtrel_excludes_plt
10931 #define elf_backend_dtrel_excludes_plt 1
10933 #undef bfd_elf32_get_synthetic_symtab
10935 #undef bfd_elf32_bfd_link_hash_table_create
10936 #define bfd_elf32_bfd_link_hash_table_create \
10937 ppc_elf_vxworks_link_hash_table_create
10938 #undef elf_backend_add_symbol_hook
10939 #define elf_backend_add_symbol_hook \
10940 ppc_elf_vxworks_add_symbol_hook
10941 #undef elf_backend_link_output_symbol_hook
10942 #define elf_backend_link_output_symbol_hook \
10943 elf_vxworks_link_output_symbol_hook
10944 #undef elf_backend_final_write_processing
10945 #define elf_backend_final_write_processing \
10946 ppc_elf_vxworks_final_write_processing
10947 #undef elf_backend_get_sec_type_attr
10948 #define elf_backend_get_sec_type_attr \
10949 ppc_elf_vxworks_get_sec_type_attr
10950 #undef elf_backend_emit_relocs
10951 #define elf_backend_emit_relocs \
10952 elf_vxworks_emit_relocs
10955 #define elf32_bed ppc_elf_vxworks_bed
10956 #undef elf_backend_post_process_headers
10958 #include "elf32-target.h"