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
);
3479 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
3480 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3481 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
3484 || !bfd_set_section_alignment (abfd
, s
,
3485 htab
->params
->ppc476_workaround
? 6 : 4))
3488 if (!info
->no_ld_generated_unwind_info
)
3490 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3491 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3492 s
= bfd_make_section_anyway_with_flags (abfd
, ".eh_frame", flags
);
3493 htab
->glink_eh_frame
= s
;
3495 || !bfd_set_section_alignment (abfd
, s
, 2))
3499 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
3500 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
3503 || !bfd_set_section_alignment (abfd
, s
, 4))
3506 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3507 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3508 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.iplt", flags
);
3509 htab
->elf
.irelplt
= s
;
3511 || ! bfd_set_section_alignment (abfd
, s
, 2))
3514 if (!ppc_elf_create_linker_section (abfd
, info
, 0,
3518 if (!ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3525 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3526 to output sections (just like _bfd_elf_create_dynamic_sections has
3527 to create .dynbss and .rela.bss). */
3530 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3532 struct ppc_elf_link_hash_table
*htab
;
3536 htab
= ppc_elf_hash_table (info
);
3538 if (htab
->elf
.sgot
== NULL
3539 && !ppc_elf_create_got (abfd
, info
))
3542 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
3545 if (htab
->glink
== NULL
3546 && !ppc_elf_create_glink (abfd
, info
))
3549 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynsbss",
3550 SEC_ALLOC
| SEC_LINKER_CREATED
);
3555 if (! bfd_link_pic (info
))
3557 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3558 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3559 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.sbss", flags
);
3562 || ! bfd_set_section_alignment (abfd
, s
, 2))
3566 if (htab
->is_vxworks
3567 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
3571 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
3572 if (htab
->plt_type
== PLT_VXWORKS
)
3573 /* The VxWorks PLT is a loaded section with contents. */
3574 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3575 return bfd_set_section_flags (abfd
, s
, flags
);
3578 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3581 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3582 struct elf_link_hash_entry
*dir
,
3583 struct elf_link_hash_entry
*ind
)
3585 struct ppc_elf_link_hash_entry
*edir
, *eind
;
3587 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
3588 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
3590 edir
->tls_mask
|= eind
->tls_mask
;
3591 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3593 if (edir
->elf
.versioned
!= versioned_hidden
)
3594 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3595 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3596 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3597 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3598 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3599 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3601 /* If we were called to copy over info for a weak sym, that's all. */
3602 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3605 if (eind
->dyn_relocs
!= NULL
)
3607 if (edir
->dyn_relocs
!= NULL
)
3609 struct elf_dyn_relocs
**pp
;
3610 struct elf_dyn_relocs
*p
;
3612 /* Add reloc counts against the indirect sym to the direct sym
3613 list. Merge any entries against the same section. */
3614 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3616 struct elf_dyn_relocs
*q
;
3618 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3619 if (q
->sec
== p
->sec
)
3621 q
->pc_count
+= p
->pc_count
;
3622 q
->count
+= p
->count
;
3629 *pp
= edir
->dyn_relocs
;
3632 edir
->dyn_relocs
= eind
->dyn_relocs
;
3633 eind
->dyn_relocs
= NULL
;
3636 /* Copy over the GOT refcount entries that we may have already seen to
3637 the symbol which just became indirect. */
3638 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3639 eind
->elf
.got
.refcount
= 0;
3641 /* And plt entries. */
3642 if (eind
->elf
.plt
.plist
!= NULL
)
3644 if (edir
->elf
.plt
.plist
!= NULL
)
3646 struct plt_entry
**entp
;
3647 struct plt_entry
*ent
;
3649 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3651 struct plt_entry
*dent
;
3653 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3654 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3656 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3663 *entp
= edir
->elf
.plt
.plist
;
3666 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3667 eind
->elf
.plt
.plist
= NULL
;
3670 if (eind
->elf
.dynindx
!= -1)
3672 if (edir
->elf
.dynindx
!= -1)
3673 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3674 edir
->elf
.dynstr_index
);
3675 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3676 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3677 eind
->elf
.dynindx
= -1;
3678 eind
->elf
.dynstr_index
= 0;
3682 /* Hook called by the linker routine which adds symbols from an object
3683 file. We use it to put .comm items in .sbss, and not .bss. */
3686 ppc_elf_add_symbol_hook (bfd
*abfd
,
3687 struct bfd_link_info
*info
,
3688 Elf_Internal_Sym
*sym
,
3689 const char **namep ATTRIBUTE_UNUSED
,
3690 flagword
*flagsp ATTRIBUTE_UNUSED
,
3694 if (sym
->st_shndx
== SHN_COMMON
3695 && !bfd_link_relocatable (info
)
3696 && is_ppc_elf (info
->output_bfd
)
3697 && sym
->st_size
<= elf_gp_size (abfd
))
3699 /* Common symbols less than or equal to -G nn bytes are automatically
3701 struct ppc_elf_link_hash_table
*htab
;
3703 htab
= ppc_elf_hash_table (info
);
3704 if (htab
->sbss
== NULL
)
3706 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3708 if (!htab
->elf
.dynobj
)
3709 htab
->elf
.dynobj
= abfd
;
3711 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3714 if (htab
->sbss
== NULL
)
3719 *valp
= sym
->st_size
;
3722 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3723 && (abfd
->flags
& DYNAMIC
) == 0
3724 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
3725 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
3730 /* Find a linker generated pointer with a given addend and type. */
3732 static elf_linker_section_pointers_t
*
3733 elf_find_pointer_linker_section
3734 (elf_linker_section_pointers_t
*linker_pointers
,
3736 elf_linker_section_t
*lsect
)
3738 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3739 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3740 return linker_pointers
;
3745 /* Allocate a pointer to live in a linker created section. */
3748 elf_allocate_pointer_linker_section (bfd
*abfd
,
3749 elf_linker_section_t
*lsect
,
3750 struct elf_link_hash_entry
*h
,
3751 const Elf_Internal_Rela
*rel
)
3753 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3754 elf_linker_section_pointers_t
*linker_section_ptr
;
3755 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3758 BFD_ASSERT (lsect
!= NULL
);
3760 /* Is this a global symbol? */
3763 struct ppc_elf_link_hash_entry
*eh
;
3765 /* Has this symbol already been allocated? If so, our work is done. */
3766 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3767 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3772 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3776 BFD_ASSERT (is_ppc_elf (abfd
));
3778 /* Allocation of a pointer to a local symbol. */
3779 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3781 /* Allocate a table to hold the local symbols if first time. */
3784 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3787 amt
*= sizeof (elf_linker_section_pointers_t
*);
3788 ptr
= bfd_zalloc (abfd
, amt
);
3793 elf_local_ptr_offsets (abfd
) = ptr
;
3796 /* Has this symbol already been allocated? If so, our work is done. */
3797 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3802 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3805 /* Allocate space for a pointer in the linker section, and allocate
3806 a new pointer record from internal memory. */
3807 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3808 amt
= sizeof (elf_linker_section_pointers_t
);
3809 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3811 if (!linker_section_ptr
)
3814 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3815 linker_section_ptr
->addend
= rel
->r_addend
;
3816 linker_section_ptr
->lsect
= lsect
;
3817 *ptr_linker_section_ptr
= linker_section_ptr
;
3819 if (!bfd_set_section_alignment (lsect
->section
->owner
, lsect
->section
, 2))
3821 linker_section_ptr
->offset
= lsect
->section
->size
;
3822 lsect
->section
->size
+= 4;
3826 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3827 lsect
->name
, (long) linker_section_ptr
->offset
,
3828 (long) lsect
->section
->size
);
3834 static struct plt_entry
**
3835 update_local_sym_info (bfd
*abfd
,
3836 Elf_Internal_Shdr
*symtab_hdr
,
3837 unsigned long r_symndx
,
3840 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3841 struct plt_entry
**local_plt
;
3842 char *local_got_tls_masks
;
3844 if (local_got_refcounts
== NULL
)
3846 bfd_size_type size
= symtab_hdr
->sh_info
;
3848 size
*= (sizeof (*local_got_refcounts
)
3849 + sizeof (*local_plt
)
3850 + sizeof (*local_got_tls_masks
));
3851 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3852 if (local_got_refcounts
== NULL
)
3854 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3857 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3858 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3859 local_got_tls_masks
[r_symndx
] |= tls_type
;
3860 if (tls_type
!= PLT_IFUNC
)
3861 local_got_refcounts
[r_symndx
] += 1;
3862 return local_plt
+ r_symndx
;
3866 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3867 asection
*sec
, bfd_vma addend
)
3869 struct plt_entry
*ent
;
3873 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3874 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3878 bfd_size_type amt
= sizeof (*ent
);
3879 ent
= bfd_alloc (abfd
, amt
);
3884 ent
->addend
= addend
;
3885 ent
->plt
.refcount
= 0;
3888 ent
->plt
.refcount
+= 1;
3892 static struct plt_entry
*
3893 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3895 struct plt_entry
*ent
;
3899 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3900 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3906 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3908 return (r_type
== R_PPC_PLTREL24
3909 || r_type
== R_PPC_LOCAL24PC
3910 || r_type
== R_PPC_REL24
3911 || r_type
== R_PPC_REL14
3912 || r_type
== R_PPC_REL14_BRTAKEN
3913 || r_type
== R_PPC_REL14_BRNTAKEN
3914 || r_type
== R_PPC_ADDR24
3915 || r_type
== R_PPC_ADDR14
3916 || r_type
== R_PPC_ADDR14_BRTAKEN
3917 || r_type
== R_PPC_ADDR14_BRNTAKEN
3918 || r_type
== R_PPC_VLE_REL24
);
3922 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3925 /* xgettext:c-format */
3926 (_("%B: relocation %s cannot be used when making a shared object"),
3928 ppc_elf_howto_table
[r_type
]->name
);
3929 bfd_set_error (bfd_error_bad_value
);
3932 /* Look through the relocs for a section during the first phase, and
3933 allocate space in the global offset table or procedure linkage
3937 ppc_elf_check_relocs (bfd
*abfd
,
3938 struct bfd_link_info
*info
,
3940 const Elf_Internal_Rela
*relocs
)
3942 struct ppc_elf_link_hash_table
*htab
;
3943 Elf_Internal_Shdr
*symtab_hdr
;
3944 struct elf_link_hash_entry
**sym_hashes
;
3945 const Elf_Internal_Rela
*rel
;
3946 const Elf_Internal_Rela
*rel_end
;
3947 asection
*got2
, *sreloc
;
3948 struct elf_link_hash_entry
*tga
;
3950 if (bfd_link_relocatable (info
))
3953 /* Don't do anything special with non-loaded, non-alloced sections.
3954 In particular, any relocs in such sections should not affect GOT
3955 and PLT reference counting (ie. we don't allow them to create GOT
3956 or PLT entries), there's no possibility or desire to optimize TLS
3957 relocs, and there's not much point in propagating relocs to shared
3958 libs that the dynamic linker won't relocate. */
3959 if ((sec
->flags
& SEC_ALLOC
) == 0)
3963 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3967 BFD_ASSERT (is_ppc_elf (abfd
));
3969 /* Initialize howto table if not already done. */
3970 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3971 ppc_elf_howto_init ();
3973 htab
= ppc_elf_hash_table (info
);
3974 if (htab
->glink
== NULL
)
3976 if (htab
->elf
.dynobj
== NULL
)
3977 htab
->elf
.dynobj
= abfd
;
3978 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
3981 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3982 FALSE
, FALSE
, TRUE
);
3983 symtab_hdr
= &elf_symtab_hdr (abfd
);
3984 sym_hashes
= elf_sym_hashes (abfd
);
3985 got2
= bfd_get_section_by_name (abfd
, ".got2");
3988 rel_end
= relocs
+ sec
->reloc_count
;
3989 for (rel
= relocs
; rel
< rel_end
; rel
++)
3991 unsigned long r_symndx
;
3992 enum elf_ppc_reloc_type r_type
;
3993 struct elf_link_hash_entry
*h
;
3995 struct plt_entry
**ifunc
;
3997 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3998 if (r_symndx
< symtab_hdr
->sh_info
)
4002 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4003 while (h
->root
.type
== bfd_link_hash_indirect
4004 || h
->root
.type
== bfd_link_hash_warning
)
4005 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4008 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4009 This shows up in particular in an R_PPC_ADDR32 in the eabi
4012 && htab
->elf
.sgot
== NULL
4013 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
4015 if (htab
->elf
.dynobj
== NULL
)
4016 htab
->elf
.dynobj
= abfd
;
4017 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4019 BFD_ASSERT (h
== htab
->elf
.hgot
);
4023 r_type
= ELF32_R_TYPE (rel
->r_info
);
4025 if (h
== NULL
&& !htab
->is_vxworks
)
4027 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4032 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4034 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4035 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4040 /* STT_GNU_IFUNC symbols must have a PLT entry;
4041 In a non-pie executable even when there are
4043 if (!bfd_link_pic (info
)
4044 || is_branch_reloc (r_type
))
4047 if (r_type
== R_PPC_PLTREL24
)
4049 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4050 if (bfd_link_pic (info
))
4051 addend
= rel
->r_addend
;
4053 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
4059 if (!htab
->is_vxworks
4060 && is_branch_reloc (r_type
)
4065 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
4066 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
4067 /* We have a new-style __tls_get_addr call with a marker
4071 /* Mark this section as having an old-style call. */
4072 sec
->has_tls_get_addr_call
= 1;
4079 /* These special tls relocs tie a call to __tls_get_addr with
4080 its parameter symbol. */
4083 case R_PPC_GOT_TLSLD16
:
4084 case R_PPC_GOT_TLSLD16_LO
:
4085 case R_PPC_GOT_TLSLD16_HI
:
4086 case R_PPC_GOT_TLSLD16_HA
:
4087 tls_type
= TLS_TLS
| TLS_LD
;
4090 case R_PPC_GOT_TLSGD16
:
4091 case R_PPC_GOT_TLSGD16_LO
:
4092 case R_PPC_GOT_TLSGD16_HI
:
4093 case R_PPC_GOT_TLSGD16_HA
:
4094 tls_type
= TLS_TLS
| TLS_GD
;
4097 case R_PPC_GOT_TPREL16
:
4098 case R_PPC_GOT_TPREL16_LO
:
4099 case R_PPC_GOT_TPREL16_HI
:
4100 case R_PPC_GOT_TPREL16_HA
:
4101 if (bfd_link_dll (info
))
4102 info
->flags
|= DF_STATIC_TLS
;
4103 tls_type
= TLS_TLS
| TLS_TPREL
;
4106 case R_PPC_GOT_DTPREL16
:
4107 case R_PPC_GOT_DTPREL16_LO
:
4108 case R_PPC_GOT_DTPREL16_HI
:
4109 case R_PPC_GOT_DTPREL16_HA
:
4110 tls_type
= TLS_TLS
| TLS_DTPREL
;
4112 sec
->has_tls_reloc
= 1;
4115 /* GOT16 relocations */
4117 case R_PPC_GOT16_LO
:
4118 case R_PPC_GOT16_HI
:
4119 case R_PPC_GOT16_HA
:
4120 /* This symbol requires a global offset table entry. */
4121 if (htab
->elf
.sgot
== NULL
)
4123 if (htab
->elf
.dynobj
== NULL
)
4124 htab
->elf
.dynobj
= abfd
;
4125 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4130 h
->got
.refcount
+= 1;
4131 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4134 /* This is a global offset table entry for a local symbol. */
4135 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4138 /* We may also need a plt entry if the symbol turns out to be
4140 if (h
!= NULL
&& !bfd_link_pic (info
))
4142 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4147 /* Indirect .sdata relocation. */
4148 case R_PPC_EMB_SDAI16
:
4149 if (bfd_link_pic (info
))
4151 bad_shared_reloc (abfd
, r_type
);
4154 htab
->sdata
[0].sym
->ref_regular
= 1;
4155 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[0],
4160 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4161 h
->non_got_ref
= TRUE
;
4165 /* Indirect .sdata2 relocation. */
4166 case R_PPC_EMB_SDA2I16
:
4167 if (bfd_link_pic (info
))
4169 bad_shared_reloc (abfd
, r_type
);
4172 htab
->sdata
[1].sym
->ref_regular
= 1;
4173 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[1],
4178 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4179 h
->non_got_ref
= TRUE
;
4183 case R_PPC_SDAREL16
:
4184 htab
->sdata
[0].sym
->ref_regular
= 1;
4187 case R_PPC_VLE_SDAREL_LO16A
:
4188 case R_PPC_VLE_SDAREL_LO16D
:
4189 case R_PPC_VLE_SDAREL_HI16A
:
4190 case R_PPC_VLE_SDAREL_HI16D
:
4191 case R_PPC_VLE_SDAREL_HA16A
:
4192 case R_PPC_VLE_SDAREL_HA16D
:
4195 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4196 h
->non_got_ref
= TRUE
;
4200 case R_PPC_VLE_REL8
:
4201 case R_PPC_VLE_REL15
:
4202 case R_PPC_VLE_REL24
:
4203 case R_PPC_VLE_LO16A
:
4204 case R_PPC_VLE_LO16D
:
4205 case R_PPC_VLE_HI16A
:
4206 case R_PPC_VLE_HI16D
:
4207 case R_PPC_VLE_HA16A
:
4208 case R_PPC_VLE_HA16D
:
4209 case R_PPC_VLE_ADDR20
:
4212 case R_PPC_EMB_SDA2REL
:
4213 if (bfd_link_pic (info
))
4215 bad_shared_reloc (abfd
, r_type
);
4218 htab
->sdata
[1].sym
->ref_regular
= 1;
4221 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4222 h
->non_got_ref
= TRUE
;
4226 case R_PPC_VLE_SDA21_LO
:
4227 case R_PPC_VLE_SDA21
:
4228 case R_PPC_EMB_SDA21
:
4229 case R_PPC_EMB_RELSDA
:
4230 if (bfd_link_pic (info
))
4232 bad_shared_reloc (abfd
, r_type
);
4237 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4238 h
->non_got_ref
= TRUE
;
4242 case R_PPC_EMB_NADDR32
:
4243 case R_PPC_EMB_NADDR16
:
4244 case R_PPC_EMB_NADDR16_LO
:
4245 case R_PPC_EMB_NADDR16_HI
:
4246 case R_PPC_EMB_NADDR16_HA
:
4247 if (bfd_link_pic (info
))
4249 bad_shared_reloc (abfd
, r_type
);
4253 h
->non_got_ref
= TRUE
;
4256 case R_PPC_PLTREL24
:
4261 case R_PPC_PLTREL32
:
4262 case R_PPC_PLT16_LO
:
4263 case R_PPC_PLT16_HI
:
4264 case R_PPC_PLT16_HA
:
4266 fprintf (stderr
, "Reloc requires a PLT entry\n");
4268 /* This symbol requires a procedure linkage table entry. */
4273 /* It does not make sense to have a procedure linkage
4274 table entry for a non-ifunc local symbol. */
4275 info
->callbacks
->einfo
4276 /* xgettext:c-format */
4277 (_("%H: %s reloc against local symbol\n"),
4278 abfd
, sec
, rel
->r_offset
,
4279 ppc_elf_howto_table
[r_type
]->name
);
4280 bfd_set_error (bfd_error_bad_value
);
4288 if (r_type
== R_PPC_PLTREL24
)
4290 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4291 if (bfd_link_pic (info
))
4292 addend
= rel
->r_addend
;
4295 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4300 /* The following relocations don't need to propagate the
4301 relocation if linking a shared object since they are
4302 section relative. */
4304 case R_PPC_SECTOFF_LO
:
4305 case R_PPC_SECTOFF_HI
:
4306 case R_PPC_SECTOFF_HA
:
4307 case R_PPC_DTPREL16
:
4308 case R_PPC_DTPREL16_LO
:
4309 case R_PPC_DTPREL16_HI
:
4310 case R_PPC_DTPREL16_HA
:
4315 case R_PPC_REL16_LO
:
4316 case R_PPC_REL16_HI
:
4317 case R_PPC_REL16_HA
:
4318 case R_PPC_REL16DX_HA
:
4319 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4322 /* These are just markers. */
4324 case R_PPC_EMB_MRKREF
:
4328 case R_PPC_RELAX_PLT
:
4329 case R_PPC_RELAX_PLTREL24
:
4333 /* These should only appear in dynamic objects. */
4335 case R_PPC_GLOB_DAT
:
4336 case R_PPC_JMP_SLOT
:
4337 case R_PPC_RELATIVE
:
4338 case R_PPC_IRELATIVE
:
4341 /* These aren't handled yet. We'll report an error later. */
4343 case R_PPC_EMB_RELSEC16
:
4344 case R_PPC_EMB_RELST_LO
:
4345 case R_PPC_EMB_RELST_HI
:
4346 case R_PPC_EMB_RELST_HA
:
4347 case R_PPC_EMB_BIT_FLD
:
4350 /* This refers only to functions defined in the shared library. */
4351 case R_PPC_LOCAL24PC
:
4352 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4354 htab
->plt_type
= PLT_OLD
;
4355 htab
->old_bfd
= abfd
;
4357 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4360 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4365 /* This relocation describes the C++ object vtable hierarchy.
4366 Reconstruct it for later use during GC. */
4367 case R_PPC_GNU_VTINHERIT
:
4368 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4372 /* This relocation describes which C++ vtable entries are actually
4373 used. Record for later use during GC. */
4374 case R_PPC_GNU_VTENTRY
:
4375 BFD_ASSERT (h
!= NULL
);
4377 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4381 /* We shouldn't really be seeing TPREL32. */
4384 case R_PPC_TPREL16_LO
:
4385 case R_PPC_TPREL16_HI
:
4386 case R_PPC_TPREL16_HA
:
4387 if (bfd_link_dll (info
))
4388 info
->flags
|= DF_STATIC_TLS
;
4392 case R_PPC_DTPMOD32
:
4393 case R_PPC_DTPREL32
:
4399 && (sec
->flags
& SEC_CODE
) != 0
4400 && bfd_link_pic (info
)
4401 && htab
->plt_type
== PLT_UNSET
)
4403 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4404 the start of a function, which assembles to a REL32
4405 reference to .got2. If we detect one of these, then
4406 force the old PLT layout because the linker cannot
4407 reliably deduce the GOT pointer value needed for
4410 Elf_Internal_Sym
*isym
;
4412 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4417 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4420 htab
->plt_type
= PLT_OLD
;
4421 htab
->old_bfd
= abfd
;
4424 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4430 case R_PPC_ADDR16_LO
:
4431 case R_PPC_ADDR16_HI
:
4432 case R_PPC_ADDR16_HA
:
4435 if (h
!= NULL
&& !bfd_link_pic (info
))
4437 /* We may need a plt entry if the symbol turns out to be
4438 a function defined in a dynamic object. */
4439 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4442 /* We may need a copy reloc too. */
4444 h
->pointer_equality_needed
= 1;
4445 if (r_type
== R_PPC_ADDR16_HA
)
4446 ppc_elf_hash_entry (h
)->has_addr16_ha
= 1;
4447 if (r_type
== R_PPC_ADDR16_LO
)
4448 ppc_elf_hash_entry (h
)->has_addr16_lo
= 1;
4454 case R_PPC_REL14_BRTAKEN
:
4455 case R_PPC_REL14_BRNTAKEN
:
4458 if (h
== htab
->elf
.hgot
)
4460 if (htab
->plt_type
== PLT_UNSET
)
4462 htab
->plt_type
= PLT_OLD
;
4463 htab
->old_bfd
= abfd
;
4471 case R_PPC_ADDR14_BRTAKEN
:
4472 case R_PPC_ADDR14_BRNTAKEN
:
4473 if (h
!= NULL
&& !bfd_link_pic (info
))
4475 /* We may need a plt entry if the symbol turns out to be
4476 a function defined in a dynamic object. */
4478 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4484 /* If we are creating a shared library, and this is a reloc
4485 against a global symbol, or a non PC relative reloc
4486 against a local symbol, then we need to copy the reloc
4487 into the shared library. However, if we are linking with
4488 -Bsymbolic, we do not need to copy a reloc against a
4489 global symbol which is defined in an object we are
4490 including in the link (i.e., DEF_REGULAR is set). At
4491 this point we have not seen all the input files, so it is
4492 possible that DEF_REGULAR is not set now but will be set
4493 later (it is never cleared). In case of a weak definition,
4494 DEF_REGULAR may be cleared later by a strong definition in
4495 a shared library. We account for that possibility below by
4496 storing information in the dyn_relocs field of the hash
4497 table entry. A similar situation occurs when creating
4498 shared libraries and symbol visibility changes render the
4501 If on the other hand, we are creating an executable, we
4502 may need to keep relocations for symbols satisfied by a
4503 dynamic library if we manage to avoid copy relocs for the
4505 if ((bfd_link_pic (info
)
4506 && (must_be_dyn_reloc (info
, r_type
)
4508 && (!SYMBOLIC_BIND (info
, h
)
4509 || h
->root
.type
== bfd_link_hash_defweak
4510 || !h
->def_regular
))))
4511 || (ELIMINATE_COPY_RELOCS
4512 && !bfd_link_pic (info
)
4514 && (h
->root
.type
== bfd_link_hash_defweak
4515 || !h
->def_regular
)))
4519 "ppc_elf_check_relocs needs to "
4520 "create relocation for %s\n",
4521 (h
&& h
->root
.root
.string
4522 ? h
->root
.root
.string
: "<unknown>"));
4526 if (htab
->elf
.dynobj
== NULL
)
4527 htab
->elf
.dynobj
= abfd
;
4529 sreloc
= _bfd_elf_make_dynamic_reloc_section
4530 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4536 /* If this is a global symbol, we count the number of
4537 relocations we need for this symbol. */
4540 struct elf_dyn_relocs
*p
;
4541 struct elf_dyn_relocs
**rel_head
;
4543 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4545 if (p
== NULL
|| p
->sec
!= sec
)
4547 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4550 p
->next
= *rel_head
;
4557 if (!must_be_dyn_reloc (info
, r_type
))
4562 /* Track dynamic relocs needed for local syms too.
4563 We really need local syms available to do this
4565 struct ppc_dyn_relocs
*p
;
4566 struct ppc_dyn_relocs
**rel_head
;
4567 bfd_boolean is_ifunc
;
4570 Elf_Internal_Sym
*isym
;
4572 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4577 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4581 vpp
= &elf_section_data (s
)->local_dynrel
;
4582 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4583 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4585 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4587 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4589 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4592 p
->next
= *rel_head
;
4595 p
->ifunc
= is_ifunc
;
4609 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4610 and OBFD, and merge non-conflicting ones. */
4612 _bfd_elf_ppc_merge_fp_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4614 bfd
*obfd
= info
->output_bfd
;
4615 obj_attribute
*in_attr
, *in_attrs
;
4616 obj_attribute
*out_attr
, *out_attrs
;
4618 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4619 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4621 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4622 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4624 if (in_attr
->i
!= out_attr
->i
)
4626 int in_fp
= in_attr
->i
& 3;
4627 int out_fp
= out_attr
->i
& 3;
4631 else if (out_fp
== 0)
4634 out_attr
->i
^= in_fp
;
4636 else if (out_fp
!= 2 && in_fp
== 2)
4638 /* xgettext:c-format */
4639 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
4640 else if (out_fp
== 2 && in_fp
!= 2)
4642 /* xgettext:c-format */
4643 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
4644 else if (out_fp
== 1 && in_fp
== 3)
4646 /* xgettext:c-format */
4647 (_("Warning: %B uses double-precision hard float, "
4648 "%B uses single-precision hard float"), obfd
, ibfd
);
4649 else if (out_fp
== 3 && in_fp
== 1)
4651 /* xgettext:c-format */
4652 (_("Warning: %B uses double-precision hard float, "
4653 "%B uses single-precision hard float"), ibfd
, obfd
);
4655 in_fp
= in_attr
->i
& 0xc;
4656 out_fp
= out_attr
->i
& 0xc;
4659 else if (out_fp
== 0)
4662 out_attr
->i
^= in_fp
;
4664 else if (out_fp
!= 2 * 4 && in_fp
== 2 * 4)
4666 /* xgettext:c-format */
4667 (_("Warning: %B uses 64-bit long double, "
4668 "%B uses 128-bit long double"), ibfd
, obfd
);
4669 else if (in_fp
!= 2 * 4 && out_fp
== 2 * 4)
4671 /* xgettext:c-format */
4672 (_("Warning: %B uses 64-bit long double, "
4673 "%B uses 128-bit long double"), obfd
, ibfd
);
4674 else if (out_fp
== 1 * 4 && in_fp
== 3 * 4)
4676 /* xgettext:c-format */
4677 (_("Warning: %B uses IBM long double, "
4678 "%B uses IEEE long double"), ibfd
, obfd
);
4679 else if (out_fp
== 3 * 4 && in_fp
== 1 * 4)
4681 /* xgettext:c-format */
4682 (_("Warning: %B uses IBM long double, "
4683 "%B uses IEEE long double"), obfd
, ibfd
);
4687 /* Merge object attributes from IBFD into OBFD. Warn if
4688 there are conflicting attributes. */
4690 ppc_elf_merge_obj_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4693 obj_attribute
*in_attr
, *in_attrs
;
4694 obj_attribute
*out_attr
, *out_attrs
;
4696 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
4698 obfd
= info
->output_bfd
;
4699 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4700 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4702 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4703 merge non-conflicting ones. */
4704 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4705 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4706 if (in_attr
->i
!= out_attr
->i
)
4708 int in_vec
= in_attr
->i
& 3;
4709 int out_vec
= out_attr
->i
& 3;
4713 else if (out_vec
== 0)
4716 out_attr
->i
= in_vec
;
4718 /* For now, allow generic to transition to AltiVec or SPE
4719 without a warning. If GCC marked files with their stack
4720 alignment and used don't-care markings for files which are
4721 not affected by the vector ABI, we could warn about this
4723 else if (in_vec
== 1)
4725 else if (out_vec
== 1)
4728 out_attr
->i
= in_vec
;
4730 else if (out_vec
< in_vec
)
4732 /* xgettext:c-format */
4733 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4735 else if (out_vec
> in_vec
)
4737 /* xgettext:c-format */
4738 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4742 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4743 and merge non-conflicting ones. */
4744 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4745 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4746 if (in_attr
->i
!= out_attr
->i
)
4748 int in_struct
= in_attr
->i
& 3;
4749 int out_struct
= out_attr
->i
& 3;
4751 if (in_struct
== 0 || in_struct
== 3)
4753 else if (out_struct
== 0)
4756 out_attr
->i
= in_struct
;
4758 else if (out_struct
< in_struct
)
4760 /* xgettext:c-format */
4761 (_("Warning: %B uses r3/r4 for small structure returns, "
4762 "%B uses memory"), obfd
, ibfd
);
4763 else if (out_struct
> in_struct
)
4765 /* xgettext:c-format */
4766 (_("Warning: %B uses r3/r4 for small structure returns, "
4767 "%B uses memory"), ibfd
, obfd
);
4770 /* Merge Tag_compatibility attributes and any common GNU ones. */
4771 _bfd_elf_merge_object_attributes (ibfd
, info
);
4776 /* Merge backend specific data from an object file to the output
4777 object file when linking. */
4780 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4782 bfd
*obfd
= info
->output_bfd
;
4787 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4790 /* Check if we have the same endianness. */
4791 if (! _bfd_generic_verify_endian_match (ibfd
, info
))
4794 if (!ppc_elf_merge_obj_attributes (ibfd
, info
))
4797 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4798 old_flags
= elf_elfheader (obfd
)->e_flags
;
4799 if (!elf_flags_init (obfd
))
4801 /* First call, no flags set. */
4802 elf_flags_init (obfd
) = TRUE
;
4803 elf_elfheader (obfd
)->e_flags
= new_flags
;
4806 /* Compatible flags are ok. */
4807 else if (new_flags
== old_flags
)
4810 /* Incompatible flags. */
4813 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4814 to be linked with either. */
4816 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4817 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4821 (_("%B: compiled with -mrelocatable and linked with "
4822 "modules compiled normally"), ibfd
);
4824 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4825 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4829 (_("%B: compiled normally and linked with "
4830 "modules compiled with -mrelocatable"), ibfd
);
4833 /* The output is -mrelocatable-lib iff both the input files are. */
4834 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4835 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4837 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4838 but each input file is either -mrelocatable or -mrelocatable-lib. */
4839 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4840 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4841 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4842 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4844 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4845 any module uses it. */
4846 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4848 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4849 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4851 /* Warn about any other mismatches. */
4852 if (new_flags
!= old_flags
)
4856 /* xgettext:c-format */
4857 (_("%B: uses different e_flags (%#x) fields "
4858 "than previous modules (%#x)"),
4859 ibfd
, new_flags
, old_flags
);
4864 bfd_set_error (bfd_error_bad_value
);
4873 ppc_elf_vle_split16 (bfd
*input_bfd
,
4874 asection
*input_section
,
4875 unsigned long offset
,
4878 split16_format_type split16_format
,
4881 unsigned int insn
, opcode
, top5
;
4883 insn
= bfd_get_32 (input_bfd
, loc
);
4884 opcode
= insn
& 0xfc00f800;
4885 if (opcode
== E_OR2I_INSN
4886 || opcode
== E_AND2I_DOT_INSN
4887 || opcode
== E_OR2IS_INSN
4888 || opcode
== E_LIS_INSN
4889 || opcode
== E_AND2IS_DOT_INSN
)
4891 if (split16_format
!= split16a_type
)
4894 split16_format
= split16a_type
;
4897 /* xgettext:c-format */
4898 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4899 input_bfd
, input_section
, offset
, opcode
);
4902 else if (opcode
== E_ADD2I_DOT_INSN
4903 || opcode
== E_ADD2IS_INSN
4904 || opcode
== E_CMP16I_INSN
4905 || opcode
== E_MULL2I_INSN
4906 || opcode
== E_CMPL16I_INSN
4907 || opcode
== E_CMPH16I_INSN
4908 || opcode
== E_CMPHL16I_INSN
)
4910 if (split16_format
!= split16d_type
)
4913 split16_format
= split16d_type
;
4916 /* xgettext:c-format */
4917 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4918 input_bfd
, input_section
, offset
, opcode
);
4921 top5
= value
& 0xf800;
4922 top5
= top5
<< (split16_format
== split16a_type
? 5 : 10);
4923 insn
&= (split16_format
== split16a_type
? ~0x1f07ff : ~0x3e007ff);
4925 insn
|= value
& 0x7ff;
4926 bfd_put_32 (input_bfd
, insn
, loc
);
4930 ppc_elf_vle_split20 (bfd
*output_bfd
, bfd_byte
*loc
, bfd_vma value
)
4934 insn
= bfd_get_32 (output_bfd
, loc
);
4935 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4936 /* Top 4 bits of value to 17..20. */
4937 insn
|= (value
& 0xf0000) >> 5;
4938 /* Next 5 bits of the value to 11..15. */
4939 insn
|= (value
& 0xf800) << 5;
4940 /* And the final 11 bits of the value to bits 21 to 31. */
4941 insn
|= value
& 0x7ff;
4942 bfd_put_32 (output_bfd
, insn
, loc
);
4946 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4947 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4949 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4950 struct bfd_link_info
*info
)
4952 struct ppc_elf_link_hash_table
*htab
;
4955 htab
= ppc_elf_hash_table (info
);
4957 if (htab
->plt_type
== PLT_UNSET
)
4959 struct elf_link_hash_entry
*h
;
4961 if (htab
->params
->plt_style
== PLT_OLD
)
4962 htab
->plt_type
= PLT_OLD
;
4963 else if (bfd_link_pic (info
)
4964 && htab
->elf
.dynamic_sections_created
4965 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
4966 FALSE
, FALSE
, TRUE
)) != NULL
4967 && (h
->type
== STT_FUNC
4970 && !(SYMBOL_CALLS_LOCAL (info
, h
)
4971 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
4973 /* Profiling of shared libs (and pies) is not supported with
4974 secure plt, because ppc32 does profiling before a
4975 function prologue and a secure plt pic call stubs needs
4976 r30 to be set up. */
4977 htab
->plt_type
= PLT_OLD
;
4982 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
4984 /* Look through the reloc flags left by ppc_elf_check_relocs.
4985 Use the old style bss plt if a file makes plt calls
4986 without using the new relocs, and if ld isn't given
4987 --secure-plt and we never see REL16 relocs. */
4988 if (plt_type
== PLT_UNSET
)
4990 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
4991 if (is_ppc_elf (ibfd
))
4993 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4995 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
4998 htab
->old_bfd
= ibfd
;
5002 htab
->plt_type
= plt_type
;
5005 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
5007 if (htab
->old_bfd
!= NULL
)
5008 info
->callbacks
->einfo (_("%P: bss-plt forced due to %B\n"),
5011 info
->callbacks
->einfo (_("%P: bss-plt forced by profiling\n"));
5014 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
5016 if (htab
->plt_type
== PLT_NEW
)
5018 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
5019 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
5021 /* The new PLT is a loaded section. */
5022 if (htab
->elf
.splt
!= NULL
5023 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->elf
.splt
, flags
))
5026 /* The new GOT is not executable. */
5027 if (htab
->elf
.sgot
!= NULL
5028 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->elf
.sgot
, flags
))
5033 /* Stop an unused .glink section from affecting .text alignment. */
5034 if (htab
->glink
!= NULL
5035 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
5038 return htab
->plt_type
== PLT_NEW
;
5041 /* Return the section that should be marked against GC for a given
5045 ppc_elf_gc_mark_hook (asection
*sec
,
5046 struct bfd_link_info
*info
,
5047 Elf_Internal_Rela
*rel
,
5048 struct elf_link_hash_entry
*h
,
5049 Elf_Internal_Sym
*sym
)
5052 switch (ELF32_R_TYPE (rel
->r_info
))
5054 case R_PPC_GNU_VTINHERIT
:
5055 case R_PPC_GNU_VTENTRY
:
5059 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5062 /* Set plt output section type, htab->tls_get_addr, and call the
5063 generic ELF tls_setup function. */
5066 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5068 struct ppc_elf_link_hash_table
*htab
;
5070 htab
= ppc_elf_hash_table (info
);
5071 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5072 FALSE
, FALSE
, TRUE
);
5073 if (htab
->plt_type
!= PLT_NEW
)
5074 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5076 if (!htab
->params
->no_tls_get_addr_opt
)
5078 struct elf_link_hash_entry
*opt
, *tga
;
5079 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5080 FALSE
, FALSE
, TRUE
);
5082 && (opt
->root
.type
== bfd_link_hash_defined
5083 || opt
->root
.type
== bfd_link_hash_defweak
))
5085 /* If glibc supports an optimized __tls_get_addr call stub,
5086 signalled by the presence of __tls_get_addr_opt, and we'll
5087 be calling __tls_get_addr via a plt call stub, then
5088 make __tls_get_addr point to __tls_get_addr_opt. */
5089 tga
= htab
->tls_get_addr
;
5090 if (htab
->elf
.dynamic_sections_created
5092 && (tga
->type
== STT_FUNC
5094 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5095 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga
)))
5097 struct plt_entry
*ent
;
5098 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5099 if (ent
->plt
.refcount
> 0)
5103 tga
->root
.type
= bfd_link_hash_indirect
;
5104 tga
->root
.u
.i
.link
= &opt
->root
;
5105 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5107 if (opt
->dynindx
!= -1)
5109 /* Use __tls_get_addr_opt in dynamic relocations. */
5111 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5113 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5116 htab
->tls_get_addr
= opt
;
5121 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5123 if (htab
->plt_type
== PLT_NEW
5124 && htab
->elf
.splt
!= NULL
5125 && htab
->elf
.splt
->output_section
!= NULL
)
5127 elf_section_type (htab
->elf
.splt
->output_section
) = SHT_PROGBITS
;
5128 elf_section_flags (htab
->elf
.splt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5131 return _bfd_elf_tls_setup (obfd
, info
);
5134 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5138 branch_reloc_hash_match (const bfd
*ibfd
,
5139 const Elf_Internal_Rela
*rel
,
5140 const struct elf_link_hash_entry
*hash
)
5142 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5143 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5144 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5146 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5148 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5149 struct elf_link_hash_entry
*h
;
5151 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5152 while (h
->root
.type
== bfd_link_hash_indirect
5153 || h
->root
.type
== bfd_link_hash_warning
)
5154 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5161 /* Run through all the TLS relocs looking for optimization
5165 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5166 struct bfd_link_info
*info
)
5170 struct ppc_elf_link_hash_table
*htab
;
5173 if (!bfd_link_executable (info
))
5176 htab
= ppc_elf_hash_table (info
);
5180 /* Make two passes through the relocs. First time check that tls
5181 relocs involved in setting up a tls_get_addr call are indeed
5182 followed by such a call. If they are not, don't do any tls
5183 optimization. On the second pass twiddle tls_mask flags to
5184 notify relocate_section that optimization can be done, and
5185 adjust got and plt refcounts. */
5186 for (pass
= 0; pass
< 2; ++pass
)
5187 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
5189 Elf_Internal_Sym
*locsyms
= NULL
;
5190 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5191 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5193 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5194 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5196 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5197 int expecting_tls_get_addr
= 0;
5199 /* Read the relocations. */
5200 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5202 if (relstart
== NULL
)
5205 relend
= relstart
+ sec
->reloc_count
;
5206 for (rel
= relstart
; rel
< relend
; rel
++)
5208 enum elf_ppc_reloc_type r_type
;
5209 unsigned long r_symndx
;
5210 struct elf_link_hash_entry
*h
= NULL
;
5212 char tls_set
, tls_clear
;
5213 bfd_boolean is_local
;
5214 bfd_signed_vma
*got_count
;
5216 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5217 if (r_symndx
>= symtab_hdr
->sh_info
)
5219 struct elf_link_hash_entry
**sym_hashes
;
5221 sym_hashes
= elf_sym_hashes (ibfd
);
5222 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5223 while (h
->root
.type
== bfd_link_hash_indirect
5224 || h
->root
.type
== bfd_link_hash_warning
)
5225 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5233 r_type
= ELF32_R_TYPE (rel
->r_info
);
5234 /* If this section has old-style __tls_get_addr calls
5235 without marker relocs, then check that each
5236 __tls_get_addr call reloc is preceded by a reloc
5237 that conceivably belongs to the __tls_get_addr arg
5238 setup insn. If we don't find matching arg setup
5239 relocs, don't do any tls optimization. */
5241 && sec
->has_tls_get_addr_call
5243 && h
== htab
->tls_get_addr
5244 && !expecting_tls_get_addr
5245 && is_branch_reloc (r_type
))
5247 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5248 "TLS optimization disabled\n",
5249 ibfd
, sec
, rel
->r_offset
);
5250 if (elf_section_data (sec
)->relocs
!= relstart
)
5255 expecting_tls_get_addr
= 0;
5258 case R_PPC_GOT_TLSLD16
:
5259 case R_PPC_GOT_TLSLD16_LO
:
5260 expecting_tls_get_addr
= 1;
5263 case R_PPC_GOT_TLSLD16_HI
:
5264 case R_PPC_GOT_TLSLD16_HA
:
5265 /* These relocs should never be against a symbol
5266 defined in a shared lib. Leave them alone if
5267 that turns out to be the case. */
5276 case R_PPC_GOT_TLSGD16
:
5277 case R_PPC_GOT_TLSGD16_LO
:
5278 expecting_tls_get_addr
= 1;
5281 case R_PPC_GOT_TLSGD16_HI
:
5282 case R_PPC_GOT_TLSGD16_HA
:
5288 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5292 case R_PPC_GOT_TPREL16
:
5293 case R_PPC_GOT_TPREL16_LO
:
5294 case R_PPC_GOT_TPREL16_HI
:
5295 case R_PPC_GOT_TPREL16_HA
:
5300 tls_clear
= TLS_TPREL
;
5308 expecting_tls_get_addr
= 2;
5319 if (!expecting_tls_get_addr
5320 || (expecting_tls_get_addr
== 1
5321 && !sec
->has_tls_get_addr_call
))
5324 if (rel
+ 1 < relend
5325 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5326 htab
->tls_get_addr
))
5329 /* Uh oh, we didn't find the expected call. We
5330 could just mark this symbol to exclude it
5331 from tls optimization but it's safer to skip
5332 the entire optimization. */
5333 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5334 "TLS optimization disabled\n"),
5335 ibfd
, sec
, rel
->r_offset
);
5336 if (elf_section_data (sec
)->relocs
!= relstart
)
5341 if (expecting_tls_get_addr
)
5343 struct plt_entry
*ent
;
5346 if (bfd_link_pic (info
)
5347 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5348 addend
= rel
[1].r_addend
;
5349 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5351 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5352 ent
->plt
.refcount
-= 1;
5354 if (expecting_tls_get_addr
== 2)
5360 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5361 got_count
= &h
->got
.refcount
;
5365 bfd_signed_vma
*lgot_refs
;
5366 struct plt_entry
**local_plt
;
5369 if (locsyms
== NULL
)
5371 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5372 if (locsyms
== NULL
)
5373 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5374 symtab_hdr
->sh_info
,
5375 0, NULL
, NULL
, NULL
);
5376 if (locsyms
== NULL
)
5378 if (elf_section_data (sec
)->relocs
!= relstart
)
5383 lgot_refs
= elf_local_got_refcounts (ibfd
);
5384 if (lgot_refs
== NULL
)
5386 local_plt
= (struct plt_entry
**)
5387 (lgot_refs
+ symtab_hdr
->sh_info
);
5388 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
5389 tls_mask
= &lgot_masks
[r_symndx
];
5390 got_count
= &lgot_refs
[r_symndx
];
5395 /* We managed to get rid of a got entry. */
5400 *tls_mask
|= tls_set
;
5401 *tls_mask
&= ~tls_clear
;
5404 if (elf_section_data (sec
)->relocs
!= relstart
)
5409 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
5411 if (!info
->keep_memory
)
5414 symtab_hdr
->contents
= (unsigned char *) locsyms
;
5417 htab
->do_tls_opt
= 1;
5421 /* Find dynamic relocs for H that apply to read-only sections. */
5424 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5426 struct elf_dyn_relocs
*p
;
5428 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5430 asection
*s
= p
->sec
->output_section
;
5432 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5438 /* Return true if we have dynamic relocs against H or any of its weak
5439 aliases, that apply to read-only sections. Cannot be used after
5440 size_dynamic_sections. */
5443 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5445 struct ppc_elf_link_hash_entry
*eh
= ppc_elf_hash_entry (h
);
5448 if (readonly_dynrelocs (&eh
->elf
))
5450 eh
= ppc_elf_hash_entry (eh
->elf
.u
.alias
);
5451 } while (eh
!= NULL
&& &eh
->elf
!= h
);
5456 /* Return whether H has pc-relative dynamic relocs. */
5459 pc_dynrelocs (struct elf_link_hash_entry
*h
)
5461 struct elf_dyn_relocs
*p
;
5463 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5464 if (p
->pc_count
!= 0)
5469 /* Adjust a symbol defined by a dynamic object and referenced by a
5470 regular object. The current definition is in some section of the
5471 dynamic object, but we're not including those sections. We have to
5472 change the definition to something the rest of the link can
5476 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5477 struct elf_link_hash_entry
*h
)
5479 struct ppc_elf_link_hash_table
*htab
;
5483 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5484 h
->root
.root
.string
);
5487 /* Make sure we know what is going on here. */
5488 htab
= ppc_elf_hash_table (info
);
5489 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5491 || h
->type
== STT_GNU_IFUNC
5495 && !h
->def_regular
)));
5497 /* Deal with function syms. */
5498 if (h
->type
== STT_FUNC
5499 || h
->type
== STT_GNU_IFUNC
5502 bfd_boolean local
= (SYMBOL_CALLS_LOCAL (info
, h
)
5503 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
5504 /* Discard dyn_relocs when non-pic if we've decided that a
5505 function symbol is local. */
5506 if (!bfd_link_pic (info
) && local
)
5507 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5509 /* Clear procedure linkage table information for any symbol that
5510 won't need a .plt entry. */
5511 struct plt_entry
*ent
;
5512 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5513 if (ent
->plt
.refcount
> 0)
5516 || (h
->type
!= STT_GNU_IFUNC
&& local
))
5518 /* A PLT entry is not required/allowed when:
5520 1. We are not using ld.so; because then the PLT entry
5521 can't be set up, so we can't use one. In this case,
5522 ppc_elf_adjust_dynamic_symbol won't even be called.
5524 2. GC has rendered the entry unused.
5526 3. We know for certain that a call to this symbol
5527 will go to this object, or will remain undefined. */
5528 h
->plt
.plist
= NULL
;
5530 h
->pointer_equality_needed
= 0;
5534 /* Taking a function's address in a read/write section
5535 doesn't require us to define the function symbol in the
5536 executable on a plt call stub. A dynamic reloc can
5537 be used instead, giving better runtime performance.
5538 (Calls via that function pointer don't need to bounce
5539 through the plt call stub.) Similarly, use a dynamic
5540 reloc for a weak reference when possible, allowing the
5541 resolution of the symbol to be set at load time rather
5543 if ((h
->pointer_equality_needed
5545 && !h
->ref_regular_nonweak
5546 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
5547 && !htab
->is_vxworks
5548 && !ppc_elf_hash_entry (h
)->has_sda_refs
5549 && !readonly_dynrelocs (h
))
5551 h
->pointer_equality_needed
= 0;
5552 /* If we haven't seen a branch reloc then we don't need
5555 h
->plt
.plist
= NULL
;
5557 else if (!bfd_link_pic (info
))
5558 /* We are going to be defining the function symbol on the
5559 plt stub, so no dyn_relocs needed when non-pic. */
5560 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5562 h
->protected_def
= 0;
5563 /* Function symbols can't have copy relocs. */
5567 h
->plt
.plist
= NULL
;
5569 /* If this is a weak symbol, and there is a real definition, the
5570 processor independent code will have arranged for us to see the
5571 real definition first, and we can just use the same value. */
5572 if (h
->is_weakalias
)
5574 struct elf_link_hash_entry
*def
= weakdef (h
);
5575 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
5576 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
5577 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
5578 if (def
->root
.u
.def
.section
== htab
->elf
.sdynbss
5579 || def
->root
.u
.def
.section
== htab
->elf
.sdynrelro
5580 || def
->root
.u
.def
.section
== htab
->dynsbss
)
5581 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5585 /* This is a reference to a symbol defined by a dynamic object which
5586 is not a function. */
5588 /* If we are creating a shared library, we must presume that the
5589 only references to the symbol are via the global offset table.
5590 For such cases we need not do anything here; the relocations will
5591 be handled correctly by relocate_section. */
5592 if (bfd_link_pic (info
))
5594 h
->protected_def
= 0;
5598 /* If there are no references to this symbol that do not use the
5599 GOT, we don't need to generate a copy reloc. */
5600 if (!h
->non_got_ref
)
5602 h
->protected_def
= 0;
5606 /* Protected variables do not work with .dynbss. The copy in
5607 .dynbss won't be used by the shared library with the protected
5608 definition for the variable. Editing to PIC, or text relocations
5609 are preferable to an incorrect program. */
5610 if (h
->protected_def
)
5612 if (ELIMINATE_COPY_RELOCS
5613 && ppc_elf_hash_entry (h
)->has_addr16_ha
5614 && ppc_elf_hash_entry (h
)->has_addr16_lo
5615 && htab
->params
->pic_fixup
== 0
5616 && info
->disable_target_specific_optimizations
<= 1)
5617 htab
->params
->pic_fixup
= 1;
5621 /* If -z nocopyreloc was given, we won't generate them either. */
5622 if (info
->nocopyreloc
)
5625 /* If we don't find any dynamic relocs in read-only sections, then
5626 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5627 We can't do this if there are any small data relocations. This
5628 doesn't work on VxWorks, where we can not have dynamic
5629 relocations (other than copy and jump slot relocations) in an
5631 if (ELIMINATE_COPY_RELOCS
5632 && !ppc_elf_hash_entry (h
)->has_sda_refs
5633 && !htab
->is_vxworks
5635 && !alias_readonly_dynrelocs (h
))
5638 /* We must allocate the symbol in our .dynbss section, which will
5639 become part of the .bss section of the executable. There will be
5640 an entry for this symbol in the .dynsym section. The dynamic
5641 object will contain position independent code, so all references
5642 from the dynamic object to this symbol will go through the global
5643 offset table. The dynamic linker will use the .dynsym entry to
5644 determine the address it must put in the global offset table, so
5645 both the dynamic object and the regular object will refer to the
5646 same memory location for the variable.
5648 Of course, if the symbol is referenced using SDAREL relocs, we
5649 must instead allocate it in .sbss. */
5650 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5652 else if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
5653 s
= htab
->elf
.sdynrelro
;
5655 s
= htab
->elf
.sdynbss
;
5656 BFD_ASSERT (s
!= NULL
);
5658 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5662 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5663 linker to copy the initial value out of the dynamic object
5664 and into the runtime process image. */
5665 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5666 srel
= htab
->relsbss
;
5667 else if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
5668 srel
= htab
->elf
.sreldynrelro
;
5670 srel
= htab
->elf
.srelbss
;
5671 BFD_ASSERT (srel
!= NULL
);
5672 srel
->size
+= sizeof (Elf32_External_Rela
);
5676 /* We no longer want dyn_relocs. */
5677 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5678 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
5681 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5682 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5683 specifying the addend on the plt relocation. For -fpic code, the sym
5684 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5685 xxxxxxxx.got2.plt_pic32.<callee>. */
5688 add_stub_sym (struct plt_entry
*ent
,
5689 struct elf_link_hash_entry
*h
,
5690 struct bfd_link_info
*info
)
5692 struct elf_link_hash_entry
*sh
;
5693 size_t len1
, len2
, len3
;
5696 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5698 if (bfd_link_pic (info
))
5699 stub
= ".plt_pic32.";
5701 stub
= ".plt_call32.";
5703 len1
= strlen (h
->root
.root
.string
);
5704 len2
= strlen (stub
);
5707 len3
= strlen (ent
->sec
->name
);
5708 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5711 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5713 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5714 memcpy (name
+ 8 + len3
, stub
, len2
);
5715 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5716 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5719 if (sh
->root
.type
== bfd_link_hash_new
)
5721 sh
->root
.type
= bfd_link_hash_defined
;
5722 sh
->root
.u
.def
.section
= htab
->glink
;
5723 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5724 sh
->ref_regular
= 1;
5725 sh
->def_regular
= 1;
5726 sh
->ref_regular_nonweak
= 1;
5727 sh
->forced_local
= 1;
5729 sh
->root
.linker_def
= 1;
5734 /* Allocate NEED contiguous space in .got, and return the offset.
5735 Handles allocation of the got header when crossing 32k. */
5738 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5741 unsigned int max_before_header
;
5743 if (htab
->plt_type
== PLT_VXWORKS
)
5745 where
= htab
->elf
.sgot
->size
;
5746 htab
->elf
.sgot
->size
+= need
;
5750 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5751 if (need
<= htab
->got_gap
)
5753 where
= max_before_header
- htab
->got_gap
;
5754 htab
->got_gap
-= need
;
5758 if (htab
->elf
.sgot
->size
+ need
> max_before_header
5759 && htab
->elf
.sgot
->size
<= max_before_header
)
5761 htab
->got_gap
= max_before_header
- htab
->elf
.sgot
->size
;
5762 htab
->elf
.sgot
->size
= max_before_header
+ htab
->got_header_size
;
5764 where
= htab
->elf
.sgot
->size
;
5765 htab
->elf
.sgot
->size
+= need
;
5771 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5772 TLS_LD is excluded because those go in a special GOT slot. */
5774 static inline unsigned int
5775 got_entries_needed (int tls_mask
)
5778 if ((tls_mask
& TLS_TLS
) == 0)
5783 if ((tls_mask
& TLS_GD
) != 0)
5785 if ((tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5787 if ((tls_mask
& TLS_DTPREL
) != 0)
5793 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5794 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5797 static inline unsigned int
5798 got_relocs_needed (int tls_mask
, unsigned int need
, bfd_boolean known
)
5800 /* All the entries we allocated need relocs.
5801 Except IE in executable with a local symbol. We could also omit
5802 the DTPREL reloc on the second word of a GD entry under the same
5803 condition as that for IE, but ld.so needs to differentiate
5804 LD and GD entries. */
5805 if ((tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0 && known
)
5807 return need
* sizeof (Elf32_External_Rela
) / 4;
5810 /* If H is undefined, make it dynamic if that makes sense. */
5813 ensure_undef_dynamic (struct bfd_link_info
*info
,
5814 struct elf_link_hash_entry
*h
)
5816 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5818 if (htab
->dynamic_sections_created
5819 && ((info
->dynamic_undefined_weak
!= 0
5820 && h
->root
.type
== bfd_link_hash_undefweak
)
5821 || h
->root
.type
== bfd_link_hash_undefined
)
5824 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
5825 return bfd_elf_link_record_dynamic_symbol (info
, h
);
5829 /* Allocate space in associated reloc sections for dynamic relocs. */
5832 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5834 struct bfd_link_info
*info
= inf
;
5835 struct ppc_elf_link_hash_entry
*eh
;
5836 struct ppc_elf_link_hash_table
*htab
;
5837 struct elf_dyn_relocs
*p
;
5840 if (h
->root
.type
== bfd_link_hash_indirect
)
5843 htab
= ppc_elf_hash_table (info
);
5844 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5845 if (eh
->elf
.got
.refcount
> 0
5846 || (ELIMINATE_COPY_RELOCS
5847 && !eh
->elf
.def_regular
5848 && eh
->elf
.protected_def
5849 && eh
->has_addr16_ha
5850 && eh
->has_addr16_lo
5851 && htab
->params
->pic_fixup
> 0))
5855 /* Make sure this symbol is output as a dynamic symbol. */
5856 if (!ensure_undef_dynamic (info
, &eh
->elf
))
5860 if ((eh
->tls_mask
& TLS_LD
) != 0)
5862 if (!eh
->elf
.def_dynamic
)
5863 /* We'll just use htab->tlsld_got.offset. This should
5864 always be the case. It's a little odd if we have
5865 a local dynamic reloc against a non-local symbol. */
5866 htab
->tlsld_got
.refcount
+= 1;
5870 need
+= got_entries_needed (eh
->tls_mask
);
5872 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5875 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5876 if ((bfd_link_pic (info
)
5877 || (htab
->elf
.dynamic_sections_created
5878 && eh
->elf
.dynindx
!= -1
5879 && !SYMBOL_REFERENCES_LOCAL (info
, &eh
->elf
)))
5880 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &eh
->elf
))
5883 bfd_boolean tprel_known
= (bfd_link_executable (info
)
5884 && SYMBOL_REFERENCES_LOCAL (info
,
5887 need
= got_relocs_needed (eh
->tls_mask
, need
, tprel_known
);
5888 if ((eh
->tls_mask
& TLS_LD
) != 0 && eh
->elf
.def_dynamic
)
5889 need
-= sizeof (Elf32_External_Rela
);
5890 rsec
= htab
->elf
.srelgot
;
5891 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5892 rsec
= htab
->elf
.irelplt
;
5898 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5900 /* If no dynamic sections we can't have dynamic relocs, except for
5901 IFUNCs which are handled even in static executables. */
5902 if (!htab
->elf
.dynamic_sections_created
5903 && h
->type
!= STT_GNU_IFUNC
)
5904 eh
->dyn_relocs
= NULL
;
5906 /* Discard relocs on undefined symbols that must be local. */
5907 else if (h
->root
.type
== bfd_link_hash_undefined
5908 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
5909 eh
->dyn_relocs
= NULL
;
5911 /* Also discard relocs on undefined weak syms with non-default
5912 visibility, or when dynamic_undefined_weak says so. */
5913 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
5914 eh
->dyn_relocs
= NULL
;
5916 if (eh
->dyn_relocs
== NULL
)
5919 /* In the shared -Bsymbolic case, discard space allocated for
5920 dynamic pc-relative relocs against symbols which turn out to be
5921 defined in regular objects. For the normal shared case, discard
5922 space for relocs that have become local due to symbol visibility
5924 else if (bfd_link_pic (info
))
5926 /* Relocs that use pc_count are those that appear on a call insn,
5927 or certain REL relocs (see must_be_dyn_reloc) that can be
5928 generated via assembly. We want calls to protected symbols to
5929 resolve directly to the function rather than going via the plt.
5930 If people want function pointer comparisons to work as expected
5931 then they should avoid writing weird assembly. */
5932 if (SYMBOL_CALLS_LOCAL (info
, h
))
5934 struct elf_dyn_relocs
**pp
;
5936 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5938 p
->count
-= p
->pc_count
;
5947 if (htab
->is_vxworks
)
5949 struct elf_dyn_relocs
**pp
;
5951 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5953 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
5960 if (eh
->dyn_relocs
!= NULL
)
5962 /* Make sure this symbol is output as a dynamic symbol. */
5963 if (!ensure_undef_dynamic (info
, h
))
5967 else if (ELIMINATE_COPY_RELOCS
)
5969 /* For the non-pic case, discard space for relocs against
5970 symbols which turn out to need copy relocs or are not
5972 if (h
->dynamic_adjusted
5974 && !ELF_COMMON_DEF_P (h
)
5975 && !(h
->protected_def
5976 && eh
->has_addr16_ha
5977 && eh
->has_addr16_lo
5978 && htab
->params
->pic_fixup
> 0))
5980 /* Make sure this symbol is output as a dynamic symbol. */
5981 if (!ensure_undef_dynamic (info
, h
))
5984 if (h
->dynindx
== -1)
5985 eh
->dyn_relocs
= NULL
;
5988 eh
->dyn_relocs
= NULL
;
5991 /* Allocate space. */
5992 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5994 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5995 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5996 sreloc
= htab
->elf
.irelplt
;
5997 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6000 /* Handle PLT relocs. Done last, after dynindx has settled. */
6001 dyn
= htab
->elf
.dynamic_sections_created
&& h
->dynindx
!= -1;
6002 if (dyn
|| h
->type
== STT_GNU_IFUNC
)
6004 struct plt_entry
*ent
;
6005 bfd_boolean doneone
= FALSE
;
6006 bfd_vma plt_offset
= 0, glink_offset
= 0;
6008 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6009 if (ent
->plt
.refcount
> 0)
6011 asection
*s
= htab
->elf
.splt
;
6016 if (htab
->plt_type
== PLT_NEW
|| !dyn
)
6020 plt_offset
= s
->size
;
6023 ent
->plt
.offset
= plt_offset
;
6026 if (!doneone
|| bfd_link_pic (info
))
6028 glink_offset
= s
->size
;
6029 s
->size
+= GLINK_ENTRY_SIZE (htab
, h
);
6032 && !bfd_link_pic (info
)
6036 h
->root
.u
.def
.section
= s
;
6037 h
->root
.u
.def
.value
= glink_offset
;
6039 ent
->glink_offset
= glink_offset
;
6041 if (htab
->params
->emit_stub_syms
6042 && !add_stub_sym (ent
, h
, info
))
6049 /* If this is the first .plt entry, make room
6050 for the special first entry. */
6052 s
->size
+= htab
->plt_initial_entry_size
;
6054 /* The PowerPC PLT is actually composed of two
6055 parts, the first part is 2 words (for a load
6056 and a jump), and then there is a remaining
6057 word available at the end. */
6058 plt_offset
= (htab
->plt_initial_entry_size
6059 + (htab
->plt_slot_size
6061 - htab
->plt_initial_entry_size
)
6062 / htab
->plt_entry_size
)));
6064 /* If this symbol is not defined in a regular
6065 file, and we are not generating a shared
6066 library, then set the symbol to this location
6067 in the .plt. This is to avoid text
6068 relocations, and is required to make
6069 function pointers compare as equal between
6070 the normal executable and the shared library. */
6071 if (! bfd_link_pic (info
)
6075 h
->root
.u
.def
.section
= s
;
6076 h
->root
.u
.def
.value
= plt_offset
;
6079 /* Make room for this entry. */
6080 s
->size
+= htab
->plt_entry_size
;
6081 /* After the 8192nd entry, room for two entries
6083 if (htab
->plt_type
== PLT_OLD
6084 && (s
->size
- htab
->plt_initial_entry_size
)
6085 / htab
->plt_entry_size
6086 > PLT_NUM_SINGLE_ENTRIES
)
6087 s
->size
+= htab
->plt_entry_size
;
6089 ent
->plt
.offset
= plt_offset
;
6092 /* We also need to make an entry in the .rela.plt section. */
6096 htab
->elf
.irelplt
->size
+= sizeof (Elf32_External_Rela
);
6099 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
6101 if (htab
->plt_type
== PLT_VXWORKS
)
6103 /* Allocate space for the unloaded relocations. */
6104 if (!bfd_link_pic (info
)
6105 && htab
->elf
.dynamic_sections_created
)
6108 == (bfd_vma
) htab
->plt_initial_entry_size
)
6110 htab
->srelplt2
->size
6111 += (sizeof (Elf32_External_Rela
)
6112 * VXWORKS_PLTRESOLVE_RELOCS
);
6115 htab
->srelplt2
->size
6116 += (sizeof (Elf32_External_Rela
)
6117 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
6120 /* Every PLT entry has an associated GOT entry in
6122 htab
->elf
.sgotplt
->size
+= 4;
6129 ent
->plt
.offset
= (bfd_vma
) -1;
6133 h
->plt
.plist
= NULL
;
6139 h
->plt
.plist
= NULL
;
6146 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6147 read-only sections. */
6150 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
6154 if (h
->root
.type
== bfd_link_hash_indirect
)
6157 sec
= readonly_dynrelocs (h
);
6160 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
6162 info
->flags
|= DF_TEXTREL
;
6163 info
->callbacks
->minfo
6164 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
6165 sec
->owner
, h
->root
.root
.string
, sec
);
6167 /* Not an error, just cut short the traversal. */
6173 static const unsigned char glink_eh_frame_cie
[] =
6175 0, 0, 0, 16, /* length. */
6176 0, 0, 0, 0, /* id. */
6177 1, /* CIE version. */
6178 'z', 'R', 0, /* Augmentation string. */
6179 4, /* Code alignment. */
6180 0x7c, /* Data alignment. */
6182 1, /* Augmentation size. */
6183 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6184 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6187 /* Set the sizes of the dynamic sections. */
6190 ppc_elf_size_dynamic_sections (bfd
*output_bfd
,
6191 struct bfd_link_info
*info
)
6193 struct ppc_elf_link_hash_table
*htab
;
6199 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6202 htab
= ppc_elf_hash_table (info
);
6203 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6205 if (elf_hash_table (info
)->dynamic_sections_created
)
6207 /* Set the contents of the .interp section to the interpreter. */
6208 if (bfd_link_executable (info
) && !info
->nointerp
)
6210 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6211 BFD_ASSERT (s
!= NULL
);
6212 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6213 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6217 if (htab
->plt_type
== PLT_OLD
)
6218 htab
->got_header_size
= 16;
6219 else if (htab
->plt_type
== PLT_NEW
)
6220 htab
->got_header_size
= 12;
6222 /* Set up .got offsets for local syms, and space for local dynamic
6224 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
6226 bfd_signed_vma
*local_got
;
6227 bfd_signed_vma
*end_local_got
;
6228 struct plt_entry
**local_plt
;
6229 struct plt_entry
**end_local_plt
;
6231 bfd_size_type locsymcount
;
6232 Elf_Internal_Shdr
*symtab_hdr
;
6234 if (!is_ppc_elf (ibfd
))
6237 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6239 struct ppc_dyn_relocs
*p
;
6241 for (p
= ((struct ppc_dyn_relocs
*)
6242 elf_section_data (s
)->local_dynrel
);
6246 if (!bfd_is_abs_section (p
->sec
)
6247 && bfd_is_abs_section (p
->sec
->output_section
))
6249 /* Input section has been discarded, either because
6250 it is a copy of a linkonce section or due to
6251 linker script /DISCARD/, so we'll be discarding
6254 else if (htab
->is_vxworks
6255 && strcmp (p
->sec
->output_section
->name
,
6258 /* Relocations in vxworks .tls_vars sections are
6259 handled specially by the loader. */
6261 else if (p
->count
!= 0)
6263 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6265 sreloc
= htab
->elf
.irelplt
;
6266 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6267 if ((p
->sec
->output_section
->flags
6268 & (SEC_READONLY
| SEC_ALLOC
))
6269 == (SEC_READONLY
| SEC_ALLOC
))
6271 info
->flags
|= DF_TEXTREL
;
6272 info
->callbacks
->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
6273 p
->sec
->owner
, p
->sec
);
6279 local_got
= elf_local_got_refcounts (ibfd
);
6283 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6284 locsymcount
= symtab_hdr
->sh_info
;
6285 end_local_got
= local_got
+ locsymcount
;
6286 local_plt
= (struct plt_entry
**) end_local_got
;
6287 end_local_plt
= local_plt
+ locsymcount
;
6288 lgot_masks
= (char *) end_local_plt
;
6290 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6294 if ((*lgot_masks
& TLS_LD
) != 0)
6295 htab
->tlsld_got
.refcount
+= 1;
6296 need
= got_entries_needed (*lgot_masks
);
6298 *local_got
= (bfd_vma
) -1;
6301 *local_got
= allocate_got (htab
, need
);
6302 if (bfd_link_pic (info
))
6305 bfd_boolean tprel_known
= bfd_link_executable (info
);
6307 need
= got_relocs_needed (*lgot_masks
, need
, tprel_known
);
6308 srel
= htab
->elf
.srelgot
;
6309 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6310 srel
= htab
->elf
.irelplt
;
6316 *local_got
= (bfd_vma
) -1;
6318 if (htab
->is_vxworks
)
6321 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6322 for (; local_plt
< end_local_plt
; ++local_plt
)
6324 struct plt_entry
*ent
;
6325 bfd_boolean doneone
= FALSE
;
6326 bfd_vma plt_offset
= 0, glink_offset
= 0;
6328 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6329 if (ent
->plt
.refcount
> 0)
6335 plt_offset
= s
->size
;
6338 ent
->plt
.offset
= plt_offset
;
6341 if (!doneone
|| bfd_link_pic (info
))
6343 glink_offset
= s
->size
;
6344 s
->size
+= GLINK_ENTRY_SIZE (htab
, NULL
);
6346 ent
->glink_offset
= glink_offset
;
6350 htab
->elf
.irelplt
->size
+= sizeof (Elf32_External_Rela
);
6355 ent
->plt
.offset
= (bfd_vma
) -1;
6359 /* Allocate space for global sym dynamic relocs. */
6360 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6362 if (htab
->tlsld_got
.refcount
> 0)
6364 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6365 if (bfd_link_pic (info
))
6366 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
6369 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6371 if (htab
->elf
.sgot
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6373 unsigned int g_o_t
= 32768;
6375 /* If we haven't allocated the header, do so now. When we get here,
6376 for old plt/got the got size will be 0 to 32764 (not allocated),
6377 or 32780 to 65536 (header allocated). For new plt/got, the
6378 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6379 if (htab
->elf
.sgot
->size
<= 32768)
6381 g_o_t
= htab
->elf
.sgot
->size
;
6382 if (htab
->plt_type
== PLT_OLD
)
6384 htab
->elf
.sgot
->size
+= htab
->got_header_size
;
6387 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6389 if (bfd_link_pic (info
))
6391 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6393 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6394 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6396 if (info
->emitrelocations
)
6398 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6400 if (sda
!= NULL
&& sda
->ref_regular
)
6401 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6402 sda
= htab
->sdata
[1].sym
;
6403 if (sda
!= NULL
&& sda
->ref_regular
)
6404 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6407 if (htab
->glink
!= NULL
6408 && htab
->glink
->size
!= 0
6409 && htab
->elf
.dynamic_sections_created
)
6411 htab
->glink_pltresolve
= htab
->glink
->size
;
6412 /* Space for the branch table. */
6414 += htab
->elf
.srelplt
->size
/ (sizeof (Elf32_External_Rela
) / 4) - 4;
6415 /* Pad out to align the start of PLTresolve. */
6416 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6418 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6420 if (htab
->params
->emit_stub_syms
)
6422 struct elf_link_hash_entry
*sh
;
6423 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6424 TRUE
, FALSE
, FALSE
);
6427 if (sh
->root
.type
== bfd_link_hash_new
)
6429 sh
->root
.type
= bfd_link_hash_defined
;
6430 sh
->root
.u
.def
.section
= htab
->glink
;
6431 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6432 sh
->ref_regular
= 1;
6433 sh
->def_regular
= 1;
6434 sh
->ref_regular_nonweak
= 1;
6435 sh
->forced_local
= 1;
6437 sh
->root
.linker_def
= 1;
6439 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6440 TRUE
, FALSE
, FALSE
);
6443 if (sh
->root
.type
== bfd_link_hash_new
)
6445 sh
->root
.type
= bfd_link_hash_defined
;
6446 sh
->root
.u
.def
.section
= htab
->glink
;
6447 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6448 sh
->ref_regular
= 1;
6449 sh
->def_regular
= 1;
6450 sh
->ref_regular_nonweak
= 1;
6451 sh
->forced_local
= 1;
6453 sh
->root
.linker_def
= 1;
6458 if (htab
->glink
!= NULL
6459 && htab
->glink
->size
!= 0
6460 && htab
->glink_eh_frame
!= NULL
6461 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6462 && _bfd_elf_eh_frame_present (info
))
6464 s
= htab
->glink_eh_frame
;
6465 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6466 if (bfd_link_pic (info
))
6469 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6474 /* We've now determined the sizes of the various dynamic sections.
6475 Allocate memory for them. */
6477 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6479 bfd_boolean strip_section
= TRUE
;
6481 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6484 if (s
== htab
->elf
.splt
6485 || s
== htab
->elf
.sgot
)
6487 /* We'd like to strip these sections if they aren't needed, but if
6488 we've exported dynamic symbols from them we must leave them.
6489 It's too late to tell BFD to get rid of the symbols. */
6490 if (htab
->elf
.hplt
!= NULL
)
6491 strip_section
= FALSE
;
6492 /* Strip this section if we don't need it; see the
6495 else if (s
== htab
->elf
.iplt
6497 || s
== htab
->glink_eh_frame
6498 || s
== htab
->elf
.sgotplt
6500 || s
== htab
->elf
.sdynbss
6501 || s
== htab
->elf
.sdynrelro
6502 || s
== htab
->dynsbss
)
6504 /* Strip these too. */
6506 else if (s
== htab
->sdata
[0].section
6507 || s
== htab
->sdata
[1].section
)
6509 strip_section
= (s
->flags
& SEC_KEEP
) == 0;
6511 else if (CONST_STRNEQ (bfd_get_section_name (htab
->elf
.dynobj
, s
),
6516 /* Remember whether there are any relocation sections. */
6519 /* We use the reloc_count field as a counter if we need
6520 to copy relocs into the output file. */
6526 /* It's not one of our sections, so don't allocate space. */
6530 if (s
->size
== 0 && strip_section
)
6532 /* If we don't need this section, strip it from the
6533 output file. This is mostly to handle .rela.bss and
6534 .rela.plt. We must create both sections in
6535 create_dynamic_sections, because they must be created
6536 before the linker maps input sections to output
6537 sections. The linker does that before
6538 adjust_dynamic_symbol is called, and it is that
6539 function which decides whether anything needs to go
6540 into these sections. */
6541 s
->flags
|= SEC_EXCLUDE
;
6545 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
6548 /* Allocate memory for the section contents. */
6549 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
6550 if (s
->contents
== NULL
)
6554 if (htab
->elf
.dynamic_sections_created
)
6556 /* Add some entries to the .dynamic section. We fill in the
6557 values later, in ppc_elf_finish_dynamic_sections, but we
6558 must add the entries now so that we get the correct size for
6559 the .dynamic section. The DT_DEBUG entry is filled in by the
6560 dynamic linker and used by the debugger. */
6561 #define add_dynamic_entry(TAG, VAL) \
6562 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6564 if (bfd_link_executable (info
))
6566 if (!add_dynamic_entry (DT_DEBUG
, 0))
6570 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
6572 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6573 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6574 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6575 || !add_dynamic_entry (DT_JMPREL
, 0))
6579 if (htab
->plt_type
== PLT_NEW
6580 && htab
->glink
!= NULL
6581 && htab
->glink
->size
!= 0)
6583 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
6585 if (!htab
->params
->no_tls_get_addr_opt
6586 && htab
->tls_get_addr
!= NULL
6587 && htab
->tls_get_addr
->plt
.plist
!= NULL
6588 && !add_dynamic_entry (DT_PPC_OPT
, PPC_OPT_TLS
))
6594 if (!add_dynamic_entry (DT_RELA
, 0)
6595 || !add_dynamic_entry (DT_RELASZ
, 0)
6596 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
6600 /* If any dynamic relocs apply to a read-only section, then we
6601 need a DT_TEXTREL entry. */
6602 if ((info
->flags
& DF_TEXTREL
) == 0)
6603 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
6606 if ((info
->flags
& DF_TEXTREL
) != 0)
6608 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6611 if (htab
->is_vxworks
6612 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
6615 #undef add_dynamic_entry
6617 if (htab
->glink_eh_frame
!= NULL
6618 && htab
->glink_eh_frame
->contents
!= NULL
)
6620 unsigned char *p
= htab
->glink_eh_frame
->contents
;
6623 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
6624 /* CIE length (rewrite in case little-endian). */
6625 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
6626 p
+= sizeof (glink_eh_frame_cie
);
6628 val
= htab
->glink_eh_frame
->size
- 4 - sizeof (glink_eh_frame_cie
);
6629 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6632 val
= p
- htab
->glink_eh_frame
->contents
;
6633 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6635 /* Offset to .glink. Set later. */
6638 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
, p
);
6643 if (bfd_link_pic (info
)
6644 && htab
->elf
.dynamic_sections_created
)
6646 bfd_vma adv
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8) >> 2;
6648 *p
++ = DW_CFA_advance_loc
+ adv
;
6651 *p
++ = DW_CFA_advance_loc1
;
6654 else if (adv
< 65536)
6656 *p
++ = DW_CFA_advance_loc2
;
6657 bfd_put_16 (htab
->elf
.dynobj
, adv
, p
);
6662 *p
++ = DW_CFA_advance_loc4
;
6663 bfd_put_32 (htab
->elf
.dynobj
, adv
, p
);
6666 *p
++ = DW_CFA_register
;
6669 *p
++ = DW_CFA_advance_loc
+ 4;
6670 *p
++ = DW_CFA_restore_extended
;
6673 BFD_ASSERT ((bfd_vma
) ((p
+ 3 - htab
->glink_eh_frame
->contents
) & -4)
6674 == htab
->glink_eh_frame
->size
);
6680 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6681 if it looks like nothing is using them. */
6684 maybe_strip_sdasym (bfd
*output_bfd
, elf_linker_section_t
*lsect
)
6686 struct elf_link_hash_entry
*sda
= lsect
->sym
;
6688 if (sda
!= NULL
&& !sda
->ref_regular
&& sda
->dynindx
== -1)
6692 s
= bfd_get_section_by_name (output_bfd
, lsect
->name
);
6693 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6695 s
= bfd_get_section_by_name (output_bfd
, lsect
->bss_name
);
6696 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6698 sda
->def_regular
= 0;
6699 /* This is somewhat magic. See elf_link_output_extsym. */
6700 sda
->ref_dynamic
= 1;
6701 sda
->forced_local
= 0;
6708 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info
*info
)
6710 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6714 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[0]);
6715 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[1]);
6720 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6723 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6725 if (h
->plt
.plist
!= NULL
6727 && (!h
->pointer_equality_needed
6728 || !h
->ref_regular_nonweak
))
6731 return _bfd_elf_hash_symbol (h
);
6734 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6736 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6737 used for some functions that are allowed to break the ABI). */
6738 static const int shared_stub_entry
[] =
6740 0x7c0802a6, /* mflr 0 */
6741 0x429f0005, /* bcl 20, 31, .Lxxx */
6742 0x7d8802a6, /* mflr 12 */
6743 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6744 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6745 0x7c0803a6, /* mtlr 0 */
6746 0x7d8903a6, /* mtctr 12 */
6747 0x4e800420, /* bctr */
6750 static const int stub_entry
[] =
6752 0x3d800000, /* lis 12,xxx@ha */
6753 0x398c0000, /* addi 12,12,xxx@l */
6754 0x7d8903a6, /* mtctr 12 */
6755 0x4e800420, /* bctr */
6758 struct ppc_elf_relax_info
6760 unsigned int workaround_size
;
6761 unsigned int picfixup_size
;
6764 /* This function implements long branch trampolines, and the ppc476
6765 icache bug workaround. Any section needing trampolines or patch
6766 space for the workaround has its size extended so that we can
6767 add trampolines at the end of the section. */
6770 ppc_elf_relax_section (bfd
*abfd
,
6772 struct bfd_link_info
*link_info
,
6775 struct one_branch_fixup
6777 struct one_branch_fixup
*next
;
6779 /* Final link, can use the symbol offset. For a
6780 relocatable link we use the symbol's index. */
6785 Elf_Internal_Shdr
*symtab_hdr
;
6786 bfd_byte
*contents
= NULL
;
6787 Elf_Internal_Sym
*isymbuf
= NULL
;
6788 Elf_Internal_Rela
*internal_relocs
= NULL
;
6789 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6790 struct one_branch_fixup
*branch_fixups
= NULL
;
6791 struct ppc_elf_relax_info
*relax_info
= NULL
;
6792 unsigned changes
= 0;
6793 bfd_boolean workaround_change
;
6794 struct ppc_elf_link_hash_table
*htab
;
6795 bfd_size_type trampbase
, trampoff
, newsize
, picfixup_size
;
6797 bfd_boolean maybe_pasted
;
6801 /* No need to do anything with non-alloc or non-code sections. */
6802 if ((isec
->flags
& SEC_ALLOC
) == 0
6803 || (isec
->flags
& SEC_CODE
) == 0
6804 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6808 /* We cannot represent the required PIC relocs in the output, so don't
6809 do anything. The linker doesn't support mixing -shared and -r
6811 if (bfd_link_relocatable (link_info
) && bfd_link_pic (link_info
))
6814 htab
= ppc_elf_hash_table (link_info
);
6818 isec
->size
= (isec
->size
+ 3) & -4;
6819 if (isec
->rawsize
== 0)
6820 isec
->rawsize
= isec
->size
;
6821 trampbase
= isec
->size
;
6823 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6824 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6825 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6827 if (htab
->params
->ppc476_workaround
6828 || htab
->params
->pic_fixup
> 0)
6830 if (elf_section_data (isec
)->sec_info
== NULL
)
6832 elf_section_data (isec
)->sec_info
6833 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
6834 if (elf_section_data (isec
)->sec_info
== NULL
)
6837 relax_info
= elf_section_data (isec
)->sec_info
;
6838 trampbase
-= relax_info
->workaround_size
;
6841 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6842 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6843 /* Space for a branch around any trampolines. */
6844 trampoff
= trampbase
;
6845 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
6848 symtab_hdr
= &elf_symtab_hdr (abfd
);
6850 if (htab
->params
->branch_trampolines
6851 || htab
->params
->pic_fixup
> 0)
6853 /* Get a copy of the native relocations. */
6854 if (isec
->reloc_count
!= 0)
6856 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6857 link_info
->keep_memory
);
6858 if (internal_relocs
== NULL
)
6862 got2
= bfd_get_section_by_name (abfd
, ".got2");
6864 irelend
= internal_relocs
+ isec
->reloc_count
;
6865 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6867 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6870 struct one_branch_fixup
*f
;
6871 size_t insn_offset
= 0;
6872 bfd_vma max_branch_offset
= 0, val
;
6875 struct elf_link_hash_entry
*h
;
6876 struct plt_entry
**plist
;
6877 unsigned char sym_type
;
6882 case R_PPC_LOCAL24PC
:
6883 case R_PPC_PLTREL24
:
6884 max_branch_offset
= 1 << 25;
6888 case R_PPC_REL14_BRTAKEN
:
6889 case R_PPC_REL14_BRNTAKEN
:
6890 max_branch_offset
= 1 << 15;
6893 case R_PPC_ADDR16_HA
:
6894 if (htab
->params
->pic_fixup
> 0)
6902 /* Get the value of the symbol referred to by the reloc. */
6904 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6906 /* A local symbol. */
6907 Elf_Internal_Sym
*isym
;
6909 /* Read this BFD's local symbols. */
6910 if (isymbuf
== NULL
)
6912 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6913 if (isymbuf
== NULL
)
6914 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
6915 symtab_hdr
->sh_info
, 0,
6920 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6921 if (isym
->st_shndx
== SHN_UNDEF
)
6922 tsec
= bfd_und_section_ptr
;
6923 else if (isym
->st_shndx
== SHN_ABS
)
6924 tsec
= bfd_abs_section_ptr
;
6925 else if (isym
->st_shndx
== SHN_COMMON
)
6926 tsec
= bfd_com_section_ptr
;
6928 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6930 toff
= isym
->st_value
;
6931 sym_type
= ELF_ST_TYPE (isym
->st_info
);
6935 /* Global symbol handling. */
6938 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6939 h
= elf_sym_hashes (abfd
)[indx
];
6941 while (h
->root
.type
== bfd_link_hash_indirect
6942 || h
->root
.type
== bfd_link_hash_warning
)
6943 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6945 if (h
->root
.type
== bfd_link_hash_defined
6946 || h
->root
.type
== bfd_link_hash_defweak
)
6948 tsec
= h
->root
.u
.def
.section
;
6949 toff
= h
->root
.u
.def
.value
;
6951 else if (h
->root
.type
== bfd_link_hash_undefined
6952 || h
->root
.type
== bfd_link_hash_undefweak
)
6954 tsec
= bfd_und_section_ptr
;
6955 toff
= bfd_link_relocatable (link_info
) ? indx
: 0;
6960 /* If this branch is to __tls_get_addr then we may later
6961 optimise away the call. We won't be needing a long-
6962 branch stub in that case. */
6963 if (bfd_link_executable (link_info
)
6964 && h
== htab
->tls_get_addr
6965 && irel
!= internal_relocs
)
6967 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
6968 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
6969 unsigned int tls_mask
= 0;
6971 /* The previous reloc should be one of R_PPC_TLSGD or
6972 R_PPC_TLSLD, or for older object files, a reloc
6973 on the __tls_get_addr arg setup insn. Get tls
6974 mask bits from the symbol on that reloc. */
6975 if (t_symndx
< symtab_hdr
->sh_info
)
6977 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6979 if (local_got_offsets
!= NULL
)
6981 struct plt_entry
**local_plt
= (struct plt_entry
**)
6982 (local_got_offsets
+ symtab_hdr
->sh_info
);
6983 char *lgot_masks
= (char *)
6984 (local_plt
+ symtab_hdr
->sh_info
);
6985 tls_mask
= lgot_masks
[t_symndx
];
6990 struct elf_link_hash_entry
*th
6991 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
6993 while (th
->root
.type
== bfd_link_hash_indirect
6994 || th
->root
.type
== bfd_link_hash_warning
)
6995 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
6998 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
7001 /* The mask bits tell us if the call will be
7003 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
7004 && (t_rtype
== R_PPC_TLSGD
7005 || t_rtype
== R_PPC_GOT_TLSGD16
7006 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
7008 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
7009 && (t_rtype
== R_PPC_TLSLD
7010 || t_rtype
== R_PPC_GOT_TLSLD16
7011 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
7018 if (r_type
== R_PPC_ADDR16_HA
)
7023 && ppc_elf_hash_entry (h
)->has_addr16_ha
7024 && ppc_elf_hash_entry (h
)->has_addr16_lo
)
7025 picfixup_size
+= 12;
7029 /* The condition here under which we call find_plt_ent must
7030 match that in relocate_section. If we call find_plt_ent here
7031 but not in relocate_section, or vice versa, then the branch
7032 destination used here may be incorrect. */
7036 /* We know is_branch_reloc (r_type) is true. */
7037 if (h
->type
== STT_GNU_IFUNC
7038 || r_type
== R_PPC_PLTREL24
)
7039 plist
= &h
->plt
.plist
;
7041 else if (sym_type
== STT_GNU_IFUNC
7042 && elf_local_got_offsets (abfd
) != NULL
)
7044 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7045 struct plt_entry
**local_plt
= (struct plt_entry
**)
7046 (local_got_offsets
+ symtab_hdr
->sh_info
);
7047 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
7052 struct plt_entry
*ent
;
7054 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (link_info
))
7055 addend
= irel
->r_addend
;
7056 ent
= find_plt_ent (plist
, got2
, addend
);
7059 if (htab
->plt_type
== PLT_NEW
7061 || !htab
->elf
.dynamic_sections_created
7062 || h
->dynindx
== -1)
7065 toff
= ent
->glink_offset
;
7069 tsec
= htab
->elf
.splt
;
7070 toff
= ent
->plt
.offset
;
7075 /* If the branch and target are in the same section, you have
7076 no hope of adding stubs. We'll error out later should the
7081 /* There probably isn't any reason to handle symbols in
7082 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7083 attribute for a code section, and we are only looking at
7084 branches. However, implement it correctly here as a
7085 reference for other target relax_section functions. */
7086 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
7088 /* At this stage in linking, no SEC_MERGE symbol has been
7089 adjusted, so all references to such symbols need to be
7090 passed through _bfd_merged_section_offset. (Later, in
7091 relocate_section, all SEC_MERGE symbols *except* for
7092 section symbols have been adjusted.)
7094 gas may reduce relocations against symbols in SEC_MERGE
7095 sections to a relocation against the section symbol when
7096 the original addend was zero. When the reloc is against
7097 a section symbol we should include the addend in the
7098 offset passed to _bfd_merged_section_offset, since the
7099 location of interest is the original symbol. On the
7100 other hand, an access to "sym+addend" where "sym" is not
7101 a section symbol should not include the addend; Such an
7102 access is presumed to be an offset from "sym"; The
7103 location of interest is just "sym". */
7104 if (sym_type
== STT_SECTION
)
7105 toff
+= irel
->r_addend
;
7108 = _bfd_merged_section_offset (abfd
, &tsec
,
7109 elf_section_data (tsec
)->sec_info
,
7112 if (sym_type
!= STT_SECTION
)
7113 toff
+= irel
->r_addend
;
7115 /* PLTREL24 addends are special. */
7116 else if (r_type
!= R_PPC_PLTREL24
)
7117 toff
+= irel
->r_addend
;
7119 /* Attempted -shared link of non-pic code loses. */
7120 if ((!bfd_link_relocatable (link_info
)
7121 && tsec
== bfd_und_section_ptr
)
7122 || tsec
->output_section
== NULL
7123 || (tsec
->owner
!= NULL
7124 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
7127 roff
= irel
->r_offset
;
7129 /* If the branch is in range, no need to do anything. */
7130 if (tsec
!= bfd_und_section_ptr
7131 && (!bfd_link_relocatable (link_info
)
7132 /* A relocatable link may have sections moved during
7133 final link, so do not presume they remain in range. */
7134 || tsec
->output_section
== isec
->output_section
))
7136 bfd_vma symaddr
, reladdr
;
7138 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7139 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7140 if (symaddr
- reladdr
+ max_branch_offset
7141 < 2 * max_branch_offset
)
7145 /* Look for an existing fixup to this address. */
7146 for (f
= branch_fixups
; f
; f
= f
->next
)
7147 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7153 unsigned long stub_rtype
;
7155 val
= trampoff
- roff
;
7156 if (val
>= max_branch_offset
)
7157 /* Oh dear, we can't reach a trampoline. Don't try to add
7158 one. We'll report an error later. */
7161 if (bfd_link_pic (link_info
))
7163 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7168 size
= 4 * ARRAY_SIZE (stub_entry
);
7171 if (!htab
->params
->speculate_indirect_jumps
)
7173 stub_rtype
= R_PPC_RELAX
;
7174 if (tsec
== htab
->elf
.splt
7175 || tsec
== htab
->glink
)
7177 stub_rtype
= R_PPC_RELAX_PLT
;
7178 if (r_type
== R_PPC_PLTREL24
)
7179 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7182 /* Hijack the old relocation. Since we need two
7183 relocations for this use a "composite" reloc. */
7184 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7186 irel
->r_offset
= trampoff
+ insn_offset
;
7187 if (r_type
== R_PPC_PLTREL24
7188 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7191 /* Record the fixup so we don't do it again this section. */
7192 f
= bfd_malloc (sizeof (*f
));
7193 f
->next
= branch_fixups
;
7196 f
->trampoff
= trampoff
;
7204 val
= f
->trampoff
- roff
;
7205 if (val
>= max_branch_offset
)
7208 /* Nop out the reloc, since we're finalizing things here. */
7209 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7212 /* Get the section contents. */
7213 if (contents
== NULL
)
7215 /* Get cached copy if it exists. */
7216 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7217 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7218 /* Go get them off disk. */
7219 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7223 /* Fix up the existing branch to hit the trampoline. */
7224 hit_addr
= contents
+ roff
;
7228 case R_PPC_LOCAL24PC
:
7229 case R_PPC_PLTREL24
:
7230 t0
= bfd_get_32 (abfd
, hit_addr
);
7232 t0
|= val
& 0x3fffffc;
7233 bfd_put_32 (abfd
, t0
, hit_addr
);
7237 case R_PPC_REL14_BRTAKEN
:
7238 case R_PPC_REL14_BRNTAKEN
:
7239 t0
= bfd_get_32 (abfd
, hit_addr
);
7242 bfd_put_32 (abfd
, t0
, hit_addr
);
7247 while (branch_fixups
!= NULL
)
7249 struct one_branch_fixup
*f
= branch_fixups
;
7250 branch_fixups
= branch_fixups
->next
;
7255 workaround_change
= FALSE
;
7257 if (htab
->params
->ppc476_workaround
7258 && (!bfd_link_relocatable (link_info
)
7259 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7261 bfd_vma addr
, end_addr
;
7262 unsigned int crossings
;
7263 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7265 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7266 end_addr
= addr
+ trampoff
;
7268 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7271 /* Keep space aligned, to ensure the patch code itself does
7272 not cross a page. Don't decrease size calculated on a
7273 previous pass as otherwise we might never settle on a layout. */
7274 newsize
= 15 - ((end_addr
- 1) & 15);
7275 newsize
+= crossings
* 16;
7276 if (relax_info
->workaround_size
< newsize
)
7278 relax_info
->workaround_size
= newsize
;
7279 workaround_change
= TRUE
;
7281 /* Ensure relocate_section is called. */
7282 isec
->flags
|= SEC_RELOC
;
7284 newsize
= trampoff
+ relax_info
->workaround_size
;
7287 if (htab
->params
->pic_fixup
> 0)
7289 picfixup_size
-= relax_info
->picfixup_size
;
7290 if (picfixup_size
!= 0)
7291 relax_info
->picfixup_size
+= picfixup_size
;
7292 newsize
+= relax_info
->picfixup_size
;
7295 if (changes
!= 0 || picfixup_size
!= 0 || workaround_change
)
7296 isec
->size
= newsize
;
7299 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7301 if (! link_info
->keep_memory
)
7305 /* Cache the symbols for elf_link_input_bfd. */
7306 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7310 if (contents
!= NULL
7311 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7313 if (!changes
&& !link_info
->keep_memory
)
7317 /* Cache the section contents for elf_link_input_bfd. */
7318 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7322 changes
+= picfixup_size
;
7325 /* Append sufficient NOP relocs so we can write out relocation
7326 information for the trampolines. */
7327 Elf_Internal_Shdr
*rel_hdr
;
7328 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7329 * sizeof (*new_relocs
));
7334 memcpy (new_relocs
, internal_relocs
,
7335 isec
->reloc_count
* sizeof (*new_relocs
));
7336 for (ix
= changes
; ix
--;)
7338 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7340 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7342 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7343 free (internal_relocs
);
7344 elf_section_data (isec
)->relocs
= new_relocs
;
7345 isec
->reloc_count
+= changes
;
7346 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7347 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7349 else if (internal_relocs
!= NULL
7350 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7351 free (internal_relocs
);
7353 *again
= changes
!= 0 || workaround_change
;
7357 while (branch_fixups
!= NULL
)
7359 struct one_branch_fixup
*f
= branch_fixups
;
7360 branch_fixups
= branch_fixups
->next
;
7363 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7365 if (contents
!= NULL
7366 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7368 if (internal_relocs
!= NULL
7369 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7370 free (internal_relocs
);
7374 /* What to do when ld finds relocations against symbols defined in
7375 discarded sections. */
7378 ppc_elf_action_discarded (asection
*sec
)
7380 if (strcmp (".fixup", sec
->name
) == 0)
7383 if (strcmp (".got2", sec
->name
) == 0)
7386 return _bfd_elf_default_action_discarded (sec
);
7389 /* Fill in the address for a pointer generated in a linker section. */
7392 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7393 elf_linker_section_t
*lsect
,
7394 struct elf_link_hash_entry
*h
,
7396 const Elf_Internal_Rela
*rel
)
7398 elf_linker_section_pointers_t
*linker_section_ptr
;
7400 BFD_ASSERT (lsect
!= NULL
);
7404 /* Handle global symbol. */
7405 struct ppc_elf_link_hash_entry
*eh
;
7407 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7408 BFD_ASSERT (eh
->elf
.def_regular
);
7409 linker_section_ptr
= eh
->linker_section_pointer
;
7413 /* Handle local symbol. */
7414 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7416 BFD_ASSERT (is_ppc_elf (input_bfd
));
7417 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7418 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7421 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7424 BFD_ASSERT (linker_section_ptr
!= NULL
);
7426 /* Offset will always be a multiple of four, so use the bottom bit
7427 as a "written" flag. */
7428 if ((linker_section_ptr
->offset
& 1) == 0)
7430 bfd_put_32 (lsect
->section
->owner
,
7431 relocation
+ linker_section_ptr
->addend
,
7432 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7433 linker_section_ptr
->offset
+= 1;
7436 relocation
= (lsect
->section
->output_section
->vma
7437 + lsect
->section
->output_offset
7438 + linker_section_ptr
->offset
- 1
7439 - SYM_VAL (lsect
->sym
));
7443 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7444 lsect
->name
, (long) relocation
, (long) relocation
);
7450 #define PPC_LO(v) ((v) & 0xffff)
7451 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7452 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7454 static inline bfd_byte
*
7455 output_bctr (struct ppc_elf_link_hash_table
*htab
, bfd
*obfd
, bfd_byte
*p
)
7457 if (!htab
->params
->speculate_indirect_jumps
)
7459 bfd_put_32 (obfd
, CRSETEQ
, p
);
7461 bfd_put_32 (obfd
, BEQCTRM
, p
);
7463 bfd_put_32 (obfd
, B
, p
);
7468 bfd_put_32 (obfd
, BCTR
, p
);
7475 write_glink_stub (struct elf_link_hash_entry
*h
, struct plt_entry
*ent
,
7476 asection
*plt_sec
, unsigned char *p
,
7477 struct bfd_link_info
*info
)
7479 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7480 bfd
*output_bfd
= info
->output_bfd
;
7482 unsigned char *end
= p
+ GLINK_ENTRY_SIZE (htab
, h
);
7485 && h
== htab
->tls_get_addr
7486 && !htab
->params
->no_tls_get_addr_opt
)
7488 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
7490 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
7492 bfd_put_32 (output_bfd
, MR_0_3
, p
);
7494 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
7496 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
7498 bfd_put_32 (output_bfd
, BEQLR
, p
);
7500 bfd_put_32 (output_bfd
, MR_3_0
, p
);
7502 bfd_put_32 (output_bfd
, NOP
, p
);
7506 plt
= ((ent
->plt
.offset
& ~1)
7507 + plt_sec
->output_section
->vma
7508 + plt_sec
->output_offset
);
7510 if (bfd_link_pic (info
))
7514 if (ent
->addend
>= 32768)
7516 + ent
->sec
->output_section
->vma
7517 + ent
->sec
->output_offset
);
7518 else if (htab
->elf
.hgot
!= NULL
)
7519 got
= SYM_VAL (htab
->elf
.hgot
);
7523 if (plt
+ 0x8000 < 0x10000)
7524 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7527 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7529 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7534 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7536 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7539 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7541 p
= output_bctr (htab
, output_bfd
, p
);
7544 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7549 /* Return true if symbol is defined statically. */
7552 is_static_defined (struct elf_link_hash_entry
*h
)
7554 return ((h
->root
.type
== bfd_link_hash_defined
7555 || h
->root
.type
== bfd_link_hash_defweak
)
7556 && h
->root
.u
.def
.section
!= NULL
7557 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7560 /* If INSN is an opcode that may be used with an @tls operand, return
7561 the transformed insn for TLS optimisation, otherwise return 0. If
7562 REG is non-zero only match an insn with RB or RA equal to REG. */
7565 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7569 if ((insn
& (0x3f << 26)) != 31 << 26)
7572 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7573 rtra
= insn
& ((1 << 26) - (1 << 16));
7574 else if (((insn
>> 16) & 0x1f) == reg
)
7575 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7579 if ((insn
& (0x3ff << 1)) == 266 << 1)
7582 else if ((insn
& (0x1f << 1)) == 23 << 1
7583 && ((insn
& (0x1f << 6)) < 14 << 6
7584 || ((insn
& (0x1f << 6)) >= 16 << 6
7585 && (insn
& (0x1f << 6)) < 24 << 6)))
7586 /* load and store indexed -> dform. */
7587 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7588 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7589 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7590 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7591 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7593 insn
= (58 << 26) | 2;
7600 /* If INSN is an opcode that may be used with an @tprel operand, return
7601 the transformed insn for an undefined weak symbol, ie. with the
7602 thread pointer REG operand removed. Otherwise return 0. */
7605 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7607 if ((insn
& (0x1f << 16)) == reg
<< 16
7608 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7609 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7610 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7611 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7612 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7613 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7614 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7615 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7616 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7617 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7618 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7619 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7620 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7621 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7622 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7623 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7625 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7626 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7628 insn
&= ~(0x1f << 16);
7630 else if ((insn
& (0x1f << 21)) == reg
<< 21
7631 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7632 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7633 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7635 insn
&= ~(0x1f << 21);
7636 insn
|= (insn
& (0x1f << 16)) << 5;
7637 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7638 insn
-= 2 >> 26; /* convert to ori,oris */
7646 is_insn_ds_form (unsigned int insn
)
7648 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7649 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7650 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7651 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7655 is_insn_dq_form (unsigned int insn
)
7657 return ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
7658 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7659 && (insn
& 3) == 1));
7662 /* The RELOCATE_SECTION function is called by the ELF backend linker
7663 to handle the relocations for a section.
7665 The relocs are always passed as Rela structures; if the section
7666 actually uses Rel structures, the r_addend field will always be
7669 This function is responsible for adjust the section contents as
7670 necessary, and (if using Rela relocs and generating a
7671 relocatable output file) adjusting the reloc addend as
7674 This function does not have to worry about setting the reloc
7675 address or the reloc symbol index.
7677 LOCAL_SYMS is a pointer to the swapped in local symbols.
7679 LOCAL_SECTIONS is an array giving the section in the input file
7680 corresponding to the st_shndx field of each local symbol.
7682 The global hash table entry for the global symbols can be found
7683 via elf_sym_hashes (input_bfd).
7685 When generating relocatable output, this function must handle
7686 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7687 going to be the section symbol corresponding to the output
7688 section, which means that the addend must be adjusted
7692 ppc_elf_relocate_section (bfd
*output_bfd
,
7693 struct bfd_link_info
*info
,
7695 asection
*input_section
,
7697 Elf_Internal_Rela
*relocs
,
7698 Elf_Internal_Sym
*local_syms
,
7699 asection
**local_sections
)
7701 Elf_Internal_Shdr
*symtab_hdr
;
7702 struct elf_link_hash_entry
**sym_hashes
;
7703 struct ppc_elf_link_hash_table
*htab
;
7704 Elf_Internal_Rela
*rel
;
7705 Elf_Internal_Rela
*wrel
;
7706 Elf_Internal_Rela
*relend
;
7707 Elf_Internal_Rela outrel
;
7709 bfd_vma
*local_got_offsets
;
7710 bfd_boolean ret
= TRUE
;
7711 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
7712 bfd_boolean is_vxworks_tls
;
7713 unsigned int picfixup_size
= 0;
7714 struct ppc_elf_relax_info
*relax_info
= NULL
;
7717 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7718 "%ld relocations%s",
7719 input_bfd
, input_section
,
7720 (long) input_section
->reloc_count
,
7721 (bfd_link_relocatable (info
)) ? " (relocatable)" : "");
7724 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7726 /* Initialize howto table if not already done. */
7727 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7728 ppc_elf_howto_init ();
7730 htab
= ppc_elf_hash_table (info
);
7731 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7732 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7733 sym_hashes
= elf_sym_hashes (input_bfd
);
7734 /* We have to handle relocations in vxworks .tls_vars sections
7735 specially, because the dynamic loader is 'weird'. */
7736 is_vxworks_tls
= (htab
->is_vxworks
&& bfd_link_pic (info
)
7737 && !strcmp (input_section
->output_section
->name
,
7739 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
)
7740 relax_info
= elf_section_data (input_section
)->sec_info
;
7741 rel
= wrel
= relocs
;
7742 relend
= relocs
+ input_section
->reloc_count
;
7743 for (; rel
< relend
; wrel
++, rel
++)
7745 enum elf_ppc_reloc_type r_type
;
7747 bfd_reloc_status_type r
;
7748 Elf_Internal_Sym
*sym
;
7750 struct elf_link_hash_entry
*h
;
7751 const char *sym_name
;
7752 reloc_howto_type
*howto
;
7753 unsigned long r_symndx
;
7755 bfd_vma branch_bit
, from
;
7756 bfd_boolean unresolved_reloc
;
7758 unsigned int tls_type
, tls_mask
, tls_gd
;
7759 struct plt_entry
**ifunc
;
7760 struct reloc_howto_struct alt_howto
;
7763 r_type
= ELF32_R_TYPE (rel
->r_info
);
7767 unresolved_reloc
= FALSE
;
7769 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7771 if (r_symndx
< symtab_hdr
->sh_info
)
7773 sym
= local_syms
+ r_symndx
;
7774 sec
= local_sections
[r_symndx
];
7775 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7777 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7781 bfd_boolean ignored
;
7783 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7784 r_symndx
, symtab_hdr
, sym_hashes
,
7786 unresolved_reloc
, warned
, ignored
);
7788 sym_name
= h
->root
.root
.string
;
7791 if (sec
!= NULL
&& discarded_section (sec
))
7793 /* For relocs against symbols from removed linkonce sections,
7794 or sections discarded by a linker script, we just want the
7795 section contents zeroed. Avoid any special processing. */
7797 if (r_type
< R_PPC_max
)
7798 howto
= ppc_elf_howto_table
[r_type
];
7800 _bfd_clear_contents (howto
, input_bfd
, input_section
,
7801 contents
+ rel
->r_offset
);
7802 wrel
->r_offset
= rel
->r_offset
;
7806 /* For ld -r, remove relocations in debug sections against
7807 symbols defined in discarded sections. Not done for
7808 non-debug to preserve relocs in .eh_frame which the
7809 eh_frame editing code expects to be present. */
7810 if (bfd_link_relocatable (info
)
7811 && (input_section
->flags
& SEC_DEBUGGING
))
7817 if (bfd_link_relocatable (info
))
7820 && r_type
== R_PPC_PLTREL24
7821 && rel
->r_addend
!= 0)
7823 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7824 addend specifies the GOT pointer offset within .got2. */
7825 rel
->r_addend
+= got2
->output_offset
;
7827 if (r_type
!= R_PPC_RELAX_PLT
7828 && r_type
!= R_PPC_RELAX_PLTREL24
7829 && r_type
!= R_PPC_RELAX
)
7833 /* TLS optimizations. Replace instruction sequences and relocs
7834 based on information we collected in tls_optimize. We edit
7835 RELOCS so that --emit-relocs will output something sensible
7836 for the final instruction stream. */
7840 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7841 else if (local_got_offsets
!= NULL
)
7843 struct plt_entry
**local_plt
;
7846 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7847 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7848 tls_mask
= lgot_masks
[r_symndx
];
7851 /* Ensure reloc mapping code below stays sane. */
7852 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7853 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7854 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7855 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7856 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7857 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7858 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7859 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
7866 case R_PPC_GOT_TPREL16
:
7867 case R_PPC_GOT_TPREL16_LO
:
7868 if ((tls_mask
& TLS_TLS
) != 0
7869 && (tls_mask
& TLS_TPREL
) == 0)
7873 insn
= bfd_get_32 (input_bfd
,
7874 contents
+ rel
->r_offset
- d_offset
);
7876 insn
|= 0x3c020000; /* addis 0,2,0 */
7877 bfd_put_32 (input_bfd
, insn
,
7878 contents
+ rel
->r_offset
- d_offset
);
7879 r_type
= R_PPC_TPREL16_HA
;
7880 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7885 if ((tls_mask
& TLS_TLS
) != 0
7886 && (tls_mask
& TLS_TPREL
) == 0)
7890 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7891 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
7894 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
7895 r_type
= R_PPC_TPREL16_LO
;
7896 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7898 /* Was PPC_TLS which sits on insn boundary, now
7899 PPC_TPREL16_LO which is at low-order half-word. */
7900 rel
->r_offset
+= d_offset
;
7904 case R_PPC_GOT_TLSGD16_HI
:
7905 case R_PPC_GOT_TLSGD16_HA
:
7906 tls_gd
= TLS_TPRELGD
;
7907 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7911 case R_PPC_GOT_TLSLD16_HI
:
7912 case R_PPC_GOT_TLSLD16_HA
:
7913 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7916 if ((tls_mask
& tls_gd
) != 0)
7917 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7918 + R_PPC_GOT_TPREL16
);
7921 rel
->r_offset
-= d_offset
;
7922 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
7923 r_type
= R_PPC_NONE
;
7925 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7929 case R_PPC_GOT_TLSGD16
:
7930 case R_PPC_GOT_TLSGD16_LO
:
7931 tls_gd
= TLS_TPRELGD
;
7932 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7936 case R_PPC_GOT_TLSLD16
:
7937 case R_PPC_GOT_TLSLD16_LO
:
7938 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7940 unsigned int insn1
, insn2
;
7944 offset
= (bfd_vma
) -1;
7945 /* If not using the newer R_PPC_TLSGD/LD to mark
7946 __tls_get_addr calls, we must trust that the call
7947 stays with its arg setup insns, ie. that the next
7948 reloc is the __tls_get_addr call associated with
7949 the current reloc. Edit both insns. */
7950 if (input_section
->has_tls_get_addr_call
7952 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
7953 htab
->tls_get_addr
))
7954 offset
= rel
[1].r_offset
;
7955 /* We read the low GOT_TLS insn because we need to keep
7956 the destination reg. It may be something other than
7957 the usual r3, and moved to r3 before the call by
7958 intervening code. */
7959 insn1
= bfd_get_32 (input_bfd
,
7960 contents
+ rel
->r_offset
- d_offset
);
7961 if ((tls_mask
& tls_gd
) != 0)
7964 insn1
&= (0x1f << 21) | (0x1f << 16);
7965 insn1
|= 32 << 26; /* lwz */
7966 if (offset
!= (bfd_vma
) -1)
7968 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7969 insn2
= 0x7c631214; /* add 3,3,2 */
7970 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
7972 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7973 + R_PPC_GOT_TPREL16
);
7974 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7979 insn1
&= 0x1f << 21;
7980 insn1
|= 0x3c020000; /* addis r,2,0 */
7983 /* Was an LD reloc. */
7985 r_symndx
< symtab_hdr
->sh_info
;
7987 if (local_sections
[r_symndx
] == sec
)
7989 if (r_symndx
>= symtab_hdr
->sh_info
)
7990 r_symndx
= STN_UNDEF
;
7991 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7992 if (r_symndx
!= STN_UNDEF
)
7993 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7994 + sec
->output_offset
7995 + sec
->output_section
->vma
);
7997 r_type
= R_PPC_TPREL16_HA
;
7998 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7999 if (offset
!= (bfd_vma
) -1)
8001 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8002 rel
[1].r_offset
= offset
+ d_offset
;
8003 rel
[1].r_addend
= rel
->r_addend
;
8004 insn2
= 0x38630000; /* addi 3,3,0 */
8005 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
8008 bfd_put_32 (input_bfd
, insn1
,
8009 contents
+ rel
->r_offset
- d_offset
);
8012 /* We changed the symbol on an LD reloc. Start over
8013 in order to get h, sym, sec etc. right. */
8020 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
8023 bfd_vma offset
= rel
->r_offset
;
8025 if ((tls_mask
& TLS_TPRELGD
) != 0)
8028 r_type
= R_PPC_NONE
;
8029 insn2
= 0x7c631214; /* add 3,3,2 */
8034 r_type
= R_PPC_TPREL16_LO
;
8035 rel
->r_offset
+= d_offset
;
8036 insn2
= 0x38630000; /* addi 3,3,0 */
8038 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8039 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
8040 /* Zap the reloc on the _tls_get_addr call too. */
8041 BFD_ASSERT (offset
== rel
[1].r_offset
);
8042 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8047 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
8052 r_symndx
< symtab_hdr
->sh_info
;
8054 if (local_sections
[r_symndx
] == sec
)
8056 if (r_symndx
>= symtab_hdr
->sh_info
)
8057 r_symndx
= STN_UNDEF
;
8058 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8059 if (r_symndx
!= STN_UNDEF
)
8060 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8061 + sec
->output_offset
8062 + sec
->output_section
->vma
);
8064 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8065 rel
->r_offset
+= d_offset
;
8066 insn2
= 0x38630000; /* addi 3,3,0 */
8067 bfd_put_32 (input_bfd
, insn2
,
8068 contents
+ rel
->r_offset
- d_offset
);
8069 /* Zap the reloc on the _tls_get_addr call too. */
8070 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
8071 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8077 /* Handle other relocations that tweak non-addend part of insn. */
8084 /* Branch taken prediction relocations. */
8085 case R_PPC_ADDR14_BRTAKEN
:
8086 case R_PPC_REL14_BRTAKEN
:
8087 branch_bit
= BRANCH_PREDICT_BIT
;
8090 /* Branch not taken prediction relocations. */
8091 case R_PPC_ADDR14_BRNTAKEN
:
8092 case R_PPC_REL14_BRNTAKEN
:
8096 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
8097 insn
&= ~BRANCH_PREDICT_BIT
;
8100 from
= (rel
->r_offset
8101 + input_section
->output_offset
8102 + input_section
->output_section
->vma
);
8104 /* Invert 'y' bit if not the default. */
8105 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
8106 insn
^= BRANCH_PREDICT_BIT
;
8108 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
8113 if (ELIMINATE_COPY_RELOCS
8117 && ppc_elf_hash_entry (h
)->has_addr16_ha
8118 && ppc_elf_hash_entry (h
)->has_addr16_lo
8119 && htab
->params
->pic_fixup
> 0)
8121 /* Convert lis;addi or lis;load/store accessing a protected
8122 variable defined in a shared library to PIC. */
8125 if (r_type
== R_PPC_ADDR16_HA
)
8127 insn
= bfd_get_32 (input_bfd
,
8128 contents
+ rel
->r_offset
- d_offset
);
8129 if ((insn
& (0x3f << 26)) == (15u << 26)
8130 && (insn
& (0x1f << 16)) == 0 /* lis */)
8136 p
= (contents
+ input_section
->size
8137 - relax_info
->workaround_size
8138 - relax_info
->picfixup_size
8140 off
= (p
- contents
) - (rel
->r_offset
- d_offset
);
8141 if (off
> 0x1fffffc || (off
& 3) != 0)
8142 info
->callbacks
->einfo
8143 (_("%H: fixup branch overflow\n"),
8144 input_bfd
, input_section
, rel
->r_offset
);
8146 bfd_put_32 (input_bfd
, B
| off
,
8147 contents
+ rel
->r_offset
- d_offset
);
8148 got_addr
= (htab
->elf
.sgot
->output_section
->vma
8149 + htab
->elf
.sgot
->output_offset
8150 + (h
->got
.offset
& ~1));
8151 wrel
->r_offset
= (p
- contents
) + d_offset
;
8152 wrel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_HA
);
8153 wrel
->r_addend
= got_addr
;
8155 insn
|= ((unsigned int) (got_addr
+ 0x8000) >> 16) & 0xffff;
8156 bfd_put_32 (input_bfd
, insn
, p
);
8158 /* Convert lis to lwz, loading address from GOT. */
8160 insn
^= (32u ^ 15u) << 26;
8161 insn
|= (insn
& (0x1f << 21)) >> 5;
8162 insn
|= got_addr
& 0xffff;
8163 bfd_put_32 (input_bfd
, insn
, p
+ 4);
8165 bfd_put_32 (input_bfd
, B
| ((-4 - off
) & 0x3ffffff), p
+ 8);
8166 picfixup_size
+= 12;
8168 /* Use one of the spare relocs, so --emit-relocs
8169 output is reasonable. */
8170 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8172 rel
->r_offset
= wrel
[-1].r_offset
+ 4;
8173 rel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_LO
);
8174 rel
->r_addend
= wrel
[-1].r_addend
;
8176 /* Continue on as if we had a got reloc, to output
8178 r_type
= R_PPC_GOT16_LO
;
8182 /* xgettext:c-format */
8183 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8184 input_bfd
, input_section
, rel
->r_offset
,
8185 "R_PPC_ADDR16_HA", insn
);
8187 else if (r_type
== R_PPC_ADDR16_LO
)
8189 insn
= bfd_get_32 (input_bfd
,
8190 contents
+ rel
->r_offset
- d_offset
);
8191 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8192 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8193 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8194 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8195 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8196 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8197 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8198 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8199 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8200 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8201 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8202 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8203 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8204 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8205 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8207 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8208 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
8210 /* Arrange to apply the reloc addend, if any. */
8212 unresolved_reloc
= FALSE
;
8213 rel
->r_info
= ELF32_R_INFO (0, r_type
);
8217 /* xgettext:c-format */
8218 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8219 input_bfd
, input_section
, rel
->r_offset
,
8220 "R_PPC_ADDR16_LO", insn
);
8225 if (!htab
->is_vxworks
)
8227 struct plt_entry
*ent
;
8231 if (h
->type
== STT_GNU_IFUNC
)
8232 ifunc
= &h
->plt
.plist
;
8234 else if (local_got_offsets
!= NULL
8235 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8237 struct plt_entry
**local_plt
;
8239 local_plt
= (struct plt_entry
**) (local_got_offsets
8240 + symtab_hdr
->sh_info
);
8241 ifunc
= local_plt
+ r_symndx
;
8246 && (!bfd_link_pic (info
)
8247 || is_branch_reloc (r_type
)))
8250 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
8251 addend
= rel
->r_addend
;
8252 ent
= find_plt_ent (ifunc
, got2
, addend
);
8256 if (bfd_link_pic (info
)
8258 && htab
->plt_type
!= PLT_NEW
8259 && (!htab
->elf
.dynamic_sections_created
8261 || h
->dynindx
== -1))
8263 /* Uh oh, we are going to create a pic glink stub
8264 for an ifunc (here for h == NULL and later in
8265 finish_dynamic_symbol for h != NULL), and
8266 apparently are using code compiled with
8267 -mbss-plt. The difficulty is that -mbss-plt code
8268 gives no indication via a magic PLTREL24 addend
8269 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8270 is pointing into a .got2 section (and how far
8272 info
->callbacks
->einfo
8273 /* xgettext:c-format */
8274 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8275 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
8277 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
8279 Elf_Internal_Rela rela
;
8282 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
8283 + htab
->elf
.iplt
->output_offset
8285 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8286 rela
.r_addend
= relocation
;
8287 loc
= htab
->elf
.irelplt
->contents
;
8288 loc
+= (htab
->elf
.irelplt
->reloc_count
++
8289 * sizeof (Elf32_External_Rela
));
8290 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8291 htab
->local_ifunc_resolver
= 1;
8293 ent
->plt
.offset
|= 1;
8295 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
8297 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
8298 + ent
->glink_offset
);
8300 write_glink_stub (NULL
, ent
, htab
->elf
.iplt
, p
, info
);
8301 ent
->glink_offset
|= 1;
8304 unresolved_reloc
= FALSE
;
8305 if (htab
->plt_type
== PLT_NEW
8306 || !htab
->elf
.dynamic_sections_created
8308 || h
->dynindx
== -1)
8309 relocation
= (htab
->glink
->output_section
->vma
8310 + htab
->glink
->output_offset
8311 + (ent
->glink_offset
& ~1));
8313 relocation
= (htab
->elf
.splt
->output_section
->vma
8314 + htab
->elf
.splt
->output_offset
8319 addend
= rel
->r_addend
;
8321 if (r_type
< R_PPC_max
)
8322 howto
= ppc_elf_howto_table
[r_type
];
8329 case R_PPC_TPREL16_HA
:
8330 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
8332 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
8333 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8334 if ((insn
& ((0x3f << 26) | 0x1f << 16))
8335 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8336 /* xgettext:c-format */
8337 info
->callbacks
->minfo
8338 (_("%H: warning: %s unexpected insn %#x.\n"),
8339 input_bfd
, input_section
, rel
->r_offset
, howto
->name
, insn
);
8341 bfd_put_32 (input_bfd
, NOP
, p
);
8345 case R_PPC_TPREL16_LO
:
8346 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
8348 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
8349 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8350 insn
&= ~(0x1f << 16);
8352 bfd_put_32 (input_bfd
, insn
, p
);
8361 info
->callbacks
->einfo
8362 /* xgettext:c-format */
8363 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8364 input_bfd
, (int) r_type
, sym_name
);
8366 bfd_set_error (bfd_error_bad_value
);
8374 case R_PPC_EMB_MRKREF
:
8375 case R_PPC_GNU_VTINHERIT
:
8376 case R_PPC_GNU_VTENTRY
:
8379 /* GOT16 relocations. Like an ADDR16 using the symbol's
8380 address in the GOT as relocation value instead of the
8381 symbol's value itself. Also, create a GOT entry for the
8382 symbol and put the symbol value there. */
8383 case R_PPC_GOT_TLSGD16
:
8384 case R_PPC_GOT_TLSGD16_LO
:
8385 case R_PPC_GOT_TLSGD16_HI
:
8386 case R_PPC_GOT_TLSGD16_HA
:
8387 tls_type
= TLS_TLS
| TLS_GD
;
8390 case R_PPC_GOT_TLSLD16
:
8391 case R_PPC_GOT_TLSLD16_LO
:
8392 case R_PPC_GOT_TLSLD16_HI
:
8393 case R_PPC_GOT_TLSLD16_HA
:
8394 tls_type
= TLS_TLS
| TLS_LD
;
8397 case R_PPC_GOT_TPREL16
:
8398 case R_PPC_GOT_TPREL16_LO
:
8399 case R_PPC_GOT_TPREL16_HI
:
8400 case R_PPC_GOT_TPREL16_HA
:
8401 tls_type
= TLS_TLS
| TLS_TPREL
;
8404 case R_PPC_GOT_DTPREL16
:
8405 case R_PPC_GOT_DTPREL16_LO
:
8406 case R_PPC_GOT_DTPREL16_HI
:
8407 case R_PPC_GOT_DTPREL16_HA
:
8408 tls_type
= TLS_TLS
| TLS_DTPREL
;
8412 case R_PPC_GOT16_LO
:
8413 case R_PPC_GOT16_HI
:
8414 case R_PPC_GOT16_HA
:
8418 /* Relocation is to the entry for this symbol in the global
8424 if (htab
->elf
.sgot
== NULL
)
8428 if (tls_type
== (TLS_TLS
| TLS_LD
)
8430 || !h
->def_dynamic
))
8431 offp
= &htab
->tlsld_got
.offset
;
8434 if (!htab
->elf
.dynamic_sections_created
8436 || SYMBOL_REFERENCES_LOCAL (info
, h
)
8437 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8438 /* This is actually a static link, or it is a
8439 -Bsymbolic link and the symbol is defined
8440 locally, or the symbol was forced to be local
8441 because of a version file. */
8446 unresolved_reloc
= FALSE
;
8448 offp
= &h
->got
.offset
;
8452 if (local_got_offsets
== NULL
)
8454 offp
= &local_got_offsets
[r_symndx
];
8457 /* The offset must always be a multiple of 4. We use the
8458 least significant bit to record whether we have already
8459 processed this entry. */
8465 unsigned int tls_m
= (tls_mask
8466 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8467 | TLS_TPREL
| TLS_TPRELGD
));
8469 if (offp
== &htab
->tlsld_got
.offset
)
8475 /* We might have multiple got entries for this sym.
8476 Initialize them all. */
8481 if ((tls_m
& TLS_LD
) != 0)
8483 tls_ty
= TLS_TLS
| TLS_LD
;
8486 else if ((tls_m
& TLS_GD
) != 0)
8488 tls_ty
= TLS_TLS
| TLS_GD
;
8491 else if ((tls_m
& TLS_DTPREL
) != 0)
8493 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8494 tls_m
&= ~TLS_DTPREL
;
8496 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8498 tls_ty
= TLS_TLS
| TLS_TPREL
;
8502 /* Generate relocs for the dynamic linker. */
8504 || (bfd_link_pic (info
)
8506 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)
8507 || offp
== &htab
->tlsld_got
.offset
)
8508 && !(tls_ty
== (TLS_TLS
| TLS_TPREL
)
8509 && bfd_link_executable (info
)
8510 && SYMBOL_REFERENCES_LOCAL (info
, h
))))
8512 asection
*rsec
= htab
->elf
.srelgot
;
8517 rsec
= htab
->elf
.irelplt
;
8519 htab
->local_ifunc_resolver
= 1;
8520 else if (is_static_defined (h
))
8521 htab
->maybe_local_ifunc_resolver
= 1;
8523 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
8524 + htab
->elf
.sgot
->output_offset
8526 outrel
.r_addend
= 0;
8527 if (tls_ty
& (TLS_LD
| TLS_GD
))
8529 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8530 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8532 loc
= rsec
->contents
;
8533 loc
+= (rsec
->reloc_count
++
8534 * sizeof (Elf32_External_Rela
));
8535 bfd_elf32_swap_reloca_out (output_bfd
,
8537 outrel
.r_offset
+= 4;
8539 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8542 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8543 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8544 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8545 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8547 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8548 else if (ifunc
!= NULL
)
8549 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8551 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8552 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8554 outrel
.r_addend
+= relocation
;
8555 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8557 if (htab
->elf
.tls_sec
== NULL
)
8558 outrel
.r_addend
= 0;
8560 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8563 loc
= rsec
->contents
;
8564 loc
+= (rsec
->reloc_count
++
8565 * sizeof (Elf32_External_Rela
));
8566 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8569 /* Init the .got section contents if we're not
8570 emitting a reloc. */
8573 bfd_vma value
= relocation
;
8577 if (htab
->elf
.tls_sec
== NULL
)
8581 if (tls_ty
& TLS_LD
)
8584 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8585 if (tls_ty
& TLS_TPREL
)
8586 value
+= DTP_OFFSET
- TP_OFFSET
;
8589 if (tls_ty
& (TLS_LD
| TLS_GD
))
8591 bfd_put_32 (input_bfd
, value
,
8592 htab
->elf
.sgot
->contents
+ off
+ 4);
8596 bfd_put_32 (input_bfd
, value
,
8597 htab
->elf
.sgot
->contents
+ off
);
8601 if (tls_ty
& (TLS_LD
| TLS_GD
))
8610 if (off
>= (bfd_vma
) -2)
8613 if ((tls_type
& TLS_TLS
) != 0)
8615 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8617 if ((tls_mask
& TLS_LD
) != 0
8619 || !h
->def_dynamic
))
8621 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8623 if ((tls_mask
& TLS_GD
) != 0)
8625 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8627 if ((tls_mask
& TLS_DTPREL
) != 0)
8634 /* If here for a picfixup, we're done. */
8635 if (r_type
!= ELF32_R_TYPE (rel
->r_info
))
8638 relocation
= (htab
->elf
.sgot
->output_section
->vma
8639 + htab
->elf
.sgot
->output_offset
8641 - SYM_VAL (htab
->elf
.hgot
));
8643 /* Addends on got relocations don't make much sense.
8644 x+off@got is actually x@got+off, and since the got is
8645 generated by a hash table traversal, the value in the
8646 got at entry m+n bears little relation to the entry m. */
8648 info
->callbacks
->einfo
8649 /* xgettext:c-format */
8650 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8651 input_bfd
, input_section
, rel
->r_offset
,
8657 /* Relocations that need no special processing. */
8658 case R_PPC_LOCAL24PC
:
8659 /* It makes no sense to point a local relocation
8660 at a symbol not in this object. */
8661 if (unresolved_reloc
)
8663 (*info
->callbacks
->undefined_symbol
) (info
,
8664 h
->root
.root
.string
,
8671 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
&& bfd_link_pic (info
))
8673 /* @local on an ifunc does not really make sense since
8674 the ifunc resolver can take you anywhere. More
8675 seriously, calls to ifuncs must go through a plt call
8676 stub, and for pic the plt call stubs uses r30 to
8677 access the PLT. The problem is that a call that is
8678 local won't have the +32k reloc addend trick marking
8679 -fPIC code, so the linker won't know whether r30 is
8680 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8681 /* xgettext:c-format */
8682 info
->callbacks
->einfo (_("%X%H: @local call to ifunc %s\n"),
8683 input_bfd
, input_section
, rel
->r_offset
,
8684 h
->root
.root
.string
);
8688 case R_PPC_DTPREL16
:
8689 case R_PPC_DTPREL16_LO
:
8690 case R_PPC_DTPREL16_HI
:
8691 case R_PPC_DTPREL16_HA
:
8692 if (htab
->elf
.tls_sec
!= NULL
)
8693 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8696 /* Relocations that may need to be propagated if this is a shared
8699 case R_PPC_TPREL16_LO
:
8700 case R_PPC_TPREL16_HI
:
8701 case R_PPC_TPREL16_HA
:
8703 && h
->root
.type
== bfd_link_hash_undefweak
8704 && h
->dynindx
== -1)
8706 /* Make this relocation against an undefined weak symbol
8707 resolve to zero. This is really just a tweak, since
8708 code using weak externs ought to check that they are
8709 defined before using them. */
8710 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8711 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8712 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8714 bfd_put_32 (input_bfd
, insn
, p
);
8717 if (htab
->elf
.tls_sec
!= NULL
)
8718 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8719 /* The TPREL16 relocs shouldn't really be used in shared
8720 libs or with non-local symbols as that will result in
8721 DT_TEXTREL being set, but support them anyway. */
8725 if (htab
->elf
.tls_sec
!= NULL
)
8726 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8729 case R_PPC_DTPREL32
:
8730 if (htab
->elf
.tls_sec
!= NULL
)
8731 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8734 case R_PPC_DTPMOD32
:
8740 case R_PPC_REL16_LO
:
8741 case R_PPC_REL16_HI
:
8742 case R_PPC_REL16_HA
:
8743 case R_PPC_REL16DX_HA
:
8747 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8753 case R_PPC_ADDR16_LO
:
8754 case R_PPC_ADDR16_HI
:
8755 case R_PPC_ADDR16_HA
:
8760 case R_PPC_VLE_REL8
:
8761 case R_PPC_VLE_REL15
:
8762 case R_PPC_VLE_REL24
:
8765 case R_PPC_REL14_BRTAKEN
:
8766 case R_PPC_REL14_BRNTAKEN
:
8767 /* If these relocations are not to a named symbol, they can be
8768 handled right here, no need to bother the dynamic linker. */
8769 if (SYMBOL_CALLS_LOCAL (info
, h
)
8770 || h
== htab
->elf
.hgot
)
8776 case R_PPC_ADDR14_BRTAKEN
:
8777 case R_PPC_ADDR14_BRNTAKEN
:
8778 if (h
!= NULL
&& !bfd_link_pic (info
))
8783 if ((input_section
->flags
& SEC_ALLOC
) == 0
8787 if (bfd_link_pic (info
)
8789 || ppc_elf_hash_entry (h
)->dyn_relocs
!= NULL
)
8790 && ((h
!= NULL
&& pc_dynrelocs (h
))
8791 || must_be_dyn_reloc (info
, r_type
)))
8793 && ppc_elf_hash_entry (h
)->dyn_relocs
!= NULL
))
8801 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8802 "create relocation for %s\n",
8803 (h
&& h
->root
.root
.string
8804 ? h
->root
.root
.string
: "<unknown>"));
8807 /* When generating a shared object, these relocations
8808 are copied into the output file to be resolved at run
8811 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8814 if (outrel
.r_offset
== (bfd_vma
) -1
8815 || outrel
.r_offset
== (bfd_vma
) -2)
8816 skip
= (int) outrel
.r_offset
;
8817 outrel
.r_offset
+= (input_section
->output_section
->vma
8818 + input_section
->output_offset
);
8821 memset (&outrel
, 0, sizeof outrel
);
8822 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8825 BFD_ASSERT (indx
!= -1);
8826 unresolved_reloc
= FALSE
;
8827 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8828 outrel
.r_addend
= rel
->r_addend
;
8832 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8834 if (r_type
!= R_PPC_ADDR32
)
8838 /* If we get here when building a static
8839 executable, then the libc startup function
8840 responsible for applying indirect function
8841 relocations is going to complain about
8843 If we get here when building a dynamic
8844 executable, it will be because we have
8845 a text relocation. The dynamic loader
8846 will set the text segment writable and
8847 non-executable to apply text relocations.
8848 So we'll segfault when trying to run the
8849 indirection function to resolve the reloc. */
8850 info
->callbacks
->einfo
8851 /* xgettext:c-format */
8852 (_("%H: relocation %s for indirect "
8853 "function %s unsupported\n"),
8854 input_bfd
, input_section
, rel
->r_offset
,
8859 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8861 else if (sec
== NULL
|| sec
->owner
== NULL
)
8863 bfd_set_error (bfd_error_bad_value
);
8870 /* We are turning this relocation into one
8871 against a section symbol. It would be
8872 proper to subtract the symbol's value,
8873 osec->vma, from the emitted reloc addend,
8874 but ld.so expects buggy relocs.
8875 FIXME: Why not always use a zero index? */
8876 osec
= sec
->output_section
;
8877 indx
= elf_section_data (osec
)->dynindx
;
8880 osec
= htab
->elf
.text_index_section
;
8881 indx
= elf_section_data (osec
)->dynindx
;
8883 BFD_ASSERT (indx
!= 0);
8886 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8887 indx
, osec
->name
, osec
->flags
,
8888 h
->root
.root
.string
);
8892 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8894 else if (ifunc
!= NULL
)
8895 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8897 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8900 sreloc
= elf_section_data (input_section
)->sreloc
;
8903 sreloc
= htab
->elf
.irelplt
;
8905 htab
->local_ifunc_resolver
= 1;
8906 else if (is_static_defined (h
))
8907 htab
->maybe_local_ifunc_resolver
= 1;
8912 loc
= sreloc
->contents
;
8913 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8914 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8919 /* This reloc will be computed at runtime. Clear the memory
8920 so that it contains a predictable value for prelink. */
8923 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
8930 case R_PPC_RELAX_PLT
:
8931 case R_PPC_RELAX_PLTREL24
:
8934 struct plt_entry
*ent
;
8935 bfd_vma got2_addend
= 0;
8937 if (r_type
== R_PPC_RELAX_PLTREL24
)
8939 if (bfd_link_pic (info
))
8940 got2_addend
= addend
;
8943 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
8944 if (htab
->plt_type
== PLT_NEW
)
8945 relocation
= (htab
->glink
->output_section
->vma
8946 + htab
->glink
->output_offset
8947 + ent
->glink_offset
);
8949 relocation
= (htab
->elf
.splt
->output_section
->vma
8950 + htab
->elf
.splt
->output_offset
8959 size_t insn_offset
= rel
->r_offset
;
8962 if (bfd_link_pic (info
))
8964 relocation
-= (input_section
->output_section
->vma
8965 + input_section
->output_offset
8966 + rel
->r_offset
- 4);
8967 stub
= shared_stub_entry
;
8968 bfd_put_32 (input_bfd
, stub
[0], contents
+ insn_offset
- 12);
8969 bfd_put_32 (input_bfd
, stub
[1], contents
+ insn_offset
- 8);
8970 bfd_put_32 (input_bfd
, stub
[2], contents
+ insn_offset
- 4);
8972 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
8977 size
= ARRAY_SIZE (stub_entry
);
8981 relocation
+= addend
;
8982 if (bfd_link_relocatable (info
))
8985 /* First insn is HA, second is LO. */
8987 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
8988 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8992 insn
|= relocation
& 0xffff;
8993 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
9001 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
9004 output_bctr (htab
, input_bfd
, contents
+ insn_offset
);
9006 /* Rewrite the reloc and convert one of the trailing nop
9007 relocs to describe this relocation. */
9008 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
9009 /* The relocs are at the bottom 2 bytes */
9010 wrel
->r_offset
= rel
->r_offset
+ d_offset
;
9011 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
9012 wrel
->r_addend
= rel
->r_addend
;
9013 memmove (wrel
+ 1, wrel
, (relend
- wrel
- 1) * sizeof (*wrel
));
9015 wrel
->r_offset
+= 4;
9016 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
9020 /* Indirect .sdata relocation. */
9021 case R_PPC_EMB_SDAI16
:
9022 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
9023 if (!is_static_defined (htab
->sdata
[0].sym
))
9025 unresolved_reloc
= TRUE
;
9029 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
9030 h
, relocation
, rel
);
9034 /* Indirect .sdata2 relocation. */
9035 case R_PPC_EMB_SDA2I16
:
9036 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
9037 if (!is_static_defined (htab
->sdata
[1].sym
))
9039 unresolved_reloc
= TRUE
;
9043 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
9044 h
, relocation
, rel
);
9048 /* Handle the TOC16 reloc. We want to use the offset within the .got
9049 section, not the actual VMA. This is appropriate when generating
9050 an embedded ELF object, for which the .got section acts like the
9051 AIX .toc section. */
9052 case R_PPC_TOC16
: /* phony GOT16 relocations */
9053 if (sec
== NULL
|| sec
->output_section
== NULL
)
9055 unresolved_reloc
= TRUE
;
9058 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
9060 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
9063 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
9066 case R_PPC_PLTREL24
:
9067 if (h
!= NULL
&& ifunc
== NULL
)
9069 struct plt_entry
*ent
;
9071 ent
= find_plt_ent (&h
->plt
.plist
, got2
,
9072 bfd_link_pic (info
) ? addend
: 0);
9074 || htab
->elf
.splt
== NULL
)
9076 /* We didn't make a PLT entry for this symbol. This
9077 happens when statically linking PIC code, or when
9078 using -Bsymbolic. */
9082 /* Relocation is to the entry for this symbol in the
9083 procedure linkage table. */
9084 unresolved_reloc
= FALSE
;
9085 if (htab
->plt_type
== PLT_NEW
)
9086 relocation
= (htab
->glink
->output_section
->vma
9087 + htab
->glink
->output_offset
9088 + ent
->glink_offset
);
9090 relocation
= (htab
->elf
.splt
->output_section
->vma
9091 + htab
->elf
.splt
->output_offset
9096 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9097 addend specifies the GOT pointer offset within .got2.
9098 Don't apply it to the relocation field. */
9102 /* Relocate against _SDA_BASE_. */
9103 case R_PPC_SDAREL16
:
9106 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
9109 || sec
->output_section
== NULL
9110 || !is_static_defined (sda
))
9112 unresolved_reloc
= TRUE
;
9115 addend
-= SYM_VAL (sda
);
9117 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9118 if (!(strcmp (name
, ".sdata") == 0
9119 || strcmp (name
, ".sbss") == 0))
9121 info
->callbacks
->einfo
9122 /* xgettext:c-format */
9123 (_("%P: %B: the target (%s) of a %s relocation is "
9124 "in the wrong output section (%s)\n"),
9133 /* Relocate against _SDA2_BASE_. */
9134 case R_PPC_EMB_SDA2REL
:
9137 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
9140 || sec
->output_section
== NULL
9141 || !is_static_defined (sda
))
9143 unresolved_reloc
= TRUE
;
9146 addend
-= SYM_VAL (sda
);
9148 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9149 if (!(strcmp (name
, ".sdata2") == 0
9150 || strcmp (name
, ".sbss2") == 0))
9152 info
->callbacks
->einfo
9153 /* xgettext:c-format */
9154 (_("%P: %B: the target (%s) of a %s relocation is "
9155 "in the wrong output section (%s)\n"),
9164 case R_PPC_VLE_LO16A
:
9165 relocation
= relocation
+ addend
;
9166 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9167 contents
+ rel
->r_offset
, relocation
,
9168 split16a_type
, htab
->params
->vle_reloc_fixup
);
9171 case R_PPC_VLE_LO16D
:
9172 relocation
= relocation
+ addend
;
9173 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9174 contents
+ rel
->r_offset
, relocation
,
9175 split16d_type
, htab
->params
->vle_reloc_fixup
);
9178 case R_PPC_VLE_HI16A
:
9179 relocation
= (relocation
+ addend
) >> 16;
9180 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9181 contents
+ rel
->r_offset
, relocation
,
9182 split16a_type
, htab
->params
->vle_reloc_fixup
);
9185 case R_PPC_VLE_HI16D
:
9186 relocation
= (relocation
+ addend
) >> 16;
9187 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9188 contents
+ rel
->r_offset
, relocation
,
9189 split16d_type
, htab
->params
->vle_reloc_fixup
);
9192 case R_PPC_VLE_HA16A
:
9193 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9194 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9195 contents
+ rel
->r_offset
, relocation
,
9196 split16a_type
, htab
->params
->vle_reloc_fixup
);
9199 case R_PPC_VLE_HA16D
:
9200 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9201 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9202 contents
+ rel
->r_offset
, relocation
,
9203 split16d_type
, htab
->params
->vle_reloc_fixup
);
9206 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9207 case R_PPC_EMB_SDA21
:
9208 case R_PPC_VLE_SDA21
:
9209 case R_PPC_EMB_RELSDA
:
9210 case R_PPC_VLE_SDA21_LO
:
9215 struct elf_link_hash_entry
*sda
= NULL
;
9217 if (sec
== NULL
|| sec
->output_section
== NULL
)
9219 unresolved_reloc
= TRUE
;
9223 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9224 if (strcmp (name
, ".sdata") == 0
9225 || strcmp (name
, ".sbss") == 0)
9228 sda
= htab
->sdata
[0].sym
;
9230 else if (strcmp (name
, ".sdata2") == 0
9231 || strcmp (name
, ".sbss2") == 0)
9234 sda
= htab
->sdata
[1].sym
;
9236 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
9237 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
9243 info
->callbacks
->einfo
9244 /* xgettext:c-format */
9245 (_("%P: %B: the target (%s) of a %s relocation is "
9246 "in the wrong output section (%s)\n"),
9252 bfd_set_error (bfd_error_bad_value
);
9259 if (!is_static_defined (sda
))
9261 unresolved_reloc
= TRUE
;
9264 addend
-= SYM_VAL (sda
);
9267 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9269 && (r_type
== R_PPC_VLE_SDA21
9270 || r_type
== R_PPC_VLE_SDA21_LO
))
9272 relocation
= relocation
+ addend
;
9275 /* Force e_li insn, keeping RT from original insn. */
9279 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9280 /* Top 4 bits of value to 17..20. */
9281 insn
|= (relocation
& 0xf0000) >> 5;
9282 /* Next 5 bits of the value to 11..15. */
9283 insn
|= (relocation
& 0xf800) << 5;
9284 /* And the final 11 bits of the value to bits 21 to 31. */
9285 insn
|= relocation
& 0x7ff;
9287 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9289 if (r_type
== R_PPC_VLE_SDA21
9290 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
9294 else if (r_type
== R_PPC_EMB_SDA21
9295 || r_type
== R_PPC_VLE_SDA21
9296 || r_type
== R_PPC_VLE_SDA21_LO
)
9298 /* Fill in register field. */
9299 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
9301 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9305 case R_PPC_VLE_SDAREL_LO16A
:
9306 case R_PPC_VLE_SDAREL_LO16D
:
9307 case R_PPC_VLE_SDAREL_HI16A
:
9308 case R_PPC_VLE_SDAREL_HI16D
:
9309 case R_PPC_VLE_SDAREL_HA16A
:
9310 case R_PPC_VLE_SDAREL_HA16D
:
9314 struct elf_link_hash_entry
*sda
= NULL
;
9316 if (sec
== NULL
|| sec
->output_section
== NULL
)
9318 unresolved_reloc
= TRUE
;
9322 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9323 if (strcmp (name
, ".sdata") == 0
9324 || strcmp (name
, ".sbss") == 0)
9325 sda
= htab
->sdata
[0].sym
;
9326 else if (strcmp (name
, ".sdata2") == 0
9327 || strcmp (name
, ".sbss2") == 0)
9328 sda
= htab
->sdata
[1].sym
;
9332 /* xgettext:c-format */
9333 (_("%B: the target (%s) of a %s relocation is "
9334 "in the wrong output section (%s)"),
9340 bfd_set_error (bfd_error_bad_value
);
9345 if (sda
== NULL
|| !is_static_defined (sda
))
9347 unresolved_reloc
= TRUE
;
9350 value
= relocation
+ addend
- SYM_VAL (sda
);
9352 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
9353 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9354 contents
+ rel
->r_offset
, value
,
9356 htab
->params
->vle_reloc_fixup
);
9357 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
9358 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9359 contents
+ rel
->r_offset
, value
,
9361 htab
->params
->vle_reloc_fixup
);
9362 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
9364 value
= value
>> 16;
9365 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9366 contents
+ rel
->r_offset
, value
,
9368 htab
->params
->vle_reloc_fixup
);
9370 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
9372 value
= value
>> 16;
9373 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9374 contents
+ rel
->r_offset
, value
,
9376 htab
->params
->vle_reloc_fixup
);
9378 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
9380 value
= (value
+ 0x8000) >> 16;
9381 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9382 contents
+ rel
->r_offset
, value
,
9384 htab
->params
->vle_reloc_fixup
);
9386 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
9388 value
= (value
+ 0x8000) >> 16;
9389 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9390 contents
+ rel
->r_offset
, value
,
9392 htab
->params
->vle_reloc_fixup
);
9397 case R_PPC_VLE_ADDR20
:
9398 ppc_elf_vle_split20 (output_bfd
, contents
+ rel
->r_offset
, relocation
);
9401 /* Relocate against the beginning of the section. */
9403 case R_PPC_SECTOFF_LO
:
9404 case R_PPC_SECTOFF_HI
:
9405 case R_PPC_SECTOFF_HA
:
9406 if (sec
== NULL
|| sec
->output_section
== NULL
)
9408 unresolved_reloc
= TRUE
;
9411 addend
-= sec
->output_section
->vma
;
9414 /* Negative relocations. */
9415 case R_PPC_EMB_NADDR32
:
9416 case R_PPC_EMB_NADDR16
:
9417 case R_PPC_EMB_NADDR16_LO
:
9418 case R_PPC_EMB_NADDR16_HI
:
9419 case R_PPC_EMB_NADDR16_HA
:
9420 addend
-= 2 * relocation
;
9424 case R_PPC_GLOB_DAT
:
9425 case R_PPC_JMP_SLOT
:
9426 case R_PPC_RELATIVE
:
9427 case R_PPC_IRELATIVE
:
9429 case R_PPC_PLTREL32
:
9430 case R_PPC_PLT16_LO
:
9431 case R_PPC_PLT16_HI
:
9432 case R_PPC_PLT16_HA
:
9434 case R_PPC_EMB_RELSEC16
:
9435 case R_PPC_EMB_RELST_LO
:
9436 case R_PPC_EMB_RELST_HI
:
9437 case R_PPC_EMB_RELST_HA
:
9438 case R_PPC_EMB_BIT_FLD
:
9439 info
->callbacks
->einfo
9440 /* xgettext:c-format */
9441 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9446 bfd_set_error (bfd_error_invalid_operation
);
9451 /* Do any further special processing. */
9457 case R_PPC_ADDR16_HA
:
9458 case R_PPC_REL16_HA
:
9459 case R_PPC_REL16DX_HA
:
9460 case R_PPC_SECTOFF_HA
:
9461 case R_PPC_TPREL16_HA
:
9462 case R_PPC_DTPREL16_HA
:
9463 case R_PPC_EMB_NADDR16_HA
:
9464 case R_PPC_EMB_RELST_HA
:
9465 /* It's just possible that this symbol is a weak symbol
9466 that's not actually defined anywhere. In that case,
9467 'sec' would be NULL, and we should leave the symbol
9468 alone (it will be set to zero elsewhere in the link). */
9473 case R_PPC_PLT16_HA
:
9474 case R_PPC_GOT16_HA
:
9475 case R_PPC_GOT_TLSGD16_HA
:
9476 case R_PPC_GOT_TLSLD16_HA
:
9477 case R_PPC_GOT_TPREL16_HA
:
9478 case R_PPC_GOT_DTPREL16_HA
:
9479 /* Add 0x10000 if sign bit in 0:15 is set.
9480 Bits 0:15 are not used. */
9485 case R_PPC_ADDR16_LO
:
9487 case R_PPC_GOT16_LO
:
9488 case R_PPC_SDAREL16
:
9490 case R_PPC_SECTOFF_LO
:
9491 case R_PPC_DTPREL16
:
9492 case R_PPC_DTPREL16_LO
:
9494 case R_PPC_TPREL16_LO
:
9495 case R_PPC_GOT_TLSGD16
:
9496 case R_PPC_GOT_TLSGD16_LO
:
9497 case R_PPC_GOT_TLSLD16
:
9498 case R_PPC_GOT_TLSLD16_LO
:
9499 case R_PPC_GOT_DTPREL16
:
9500 case R_PPC_GOT_DTPREL16_LO
:
9501 case R_PPC_GOT_TPREL16
:
9502 case R_PPC_GOT_TPREL16_LO
:
9504 /* The 32-bit ABI lacks proper relocations to deal with
9505 certain 64-bit instructions. Prevent damage to bits
9506 that make up part of the insn opcode. */
9507 unsigned int insn
, mask
, lobit
;
9509 insn
= bfd_get_32 (input_bfd
,
9510 contents
+ rel
->r_offset
- d_offset
);
9512 if (is_insn_ds_form (insn
))
9514 else if (is_insn_dq_form (insn
))
9518 relocation
+= addend
;
9519 addend
= insn
& mask
;
9520 lobit
= mask
& relocation
;
9523 relocation
^= lobit
;
9524 info
->callbacks
->einfo
9525 /* xgettext:c-format */
9526 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9527 input_bfd
, input_section
, rel
->r_offset
,
9528 howto
->name
, sym_name
, mask
+ 1);
9529 bfd_set_error (bfd_error_bad_value
);
9537 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9538 "offset = %ld, addend = %ld\n",
9543 (long) rel
->r_offset
,
9547 if (unresolved_reloc
9548 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9550 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9551 rel
->r_offset
) != (bfd_vma
) -1)
9553 info
->callbacks
->einfo
9554 /* xgettext:c-format */
9555 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9556 input_bfd
, input_section
, rel
->r_offset
,
9562 /* 16-bit fields in insns mostly have signed values, but a
9563 few insns have 16-bit unsigned values. Really, we should
9564 have different reloc types. */
9565 if (howto
->complain_on_overflow
!= complain_overflow_dont
9566 && howto
->dst_mask
== 0xffff
9567 && (input_section
->flags
& SEC_CODE
) != 0)
9569 enum complain_overflow complain
= complain_overflow_signed
;
9571 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9575 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9576 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9577 complain
= complain_overflow_bitfield
;
9578 else if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9579 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9580 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
9581 complain
= complain_overflow_unsigned
;
9583 if (howto
->complain_on_overflow
!= complain
)
9586 alt_howto
.complain_on_overflow
= complain
;
9591 if (r_type
== R_PPC_REL16DX_HA
)
9593 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9594 if (rel
->r_offset
+ 4 > input_section
->size
)
9595 r
= bfd_reloc_outofrange
;
9600 relocation
+= addend
;
9601 relocation
-= (rel
->r_offset
9602 + input_section
->output_offset
9603 + input_section
->output_section
->vma
);
9605 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9607 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
9608 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9613 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9614 rel
->r_offset
, relocation
, addend
);
9616 if (r
!= bfd_reloc_ok
)
9618 if (r
== bfd_reloc_overflow
)
9621 /* On code like "if (foo) foo();" don't report overflow
9622 on a branch to zero when foo is undefined. */
9625 && (h
->root
.type
== bfd_link_hash_undefweak
9626 || h
->root
.type
== bfd_link_hash_undefined
)
9627 && is_branch_reloc (r_type
)))
9628 info
->callbacks
->reloc_overflow
9629 (info
, (h
? &h
->root
: NULL
), sym_name
, howto
->name
,
9630 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
);
9634 info
->callbacks
->einfo
9635 /* xgettext:c-format */
9636 (_("%H: %s reloc against `%s': error %d\n"),
9637 input_bfd
, input_section
, rel
->r_offset
,
9638 howto
->name
, sym_name
, (int) r
);
9649 Elf_Internal_Shdr
*rel_hdr
;
9650 size_t deleted
= rel
- wrel
;
9652 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
9653 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9654 if (rel_hdr
->sh_size
== 0)
9656 /* It is too late to remove an empty reloc section. Leave
9658 ??? What is wrong with an empty section??? */
9659 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
9664 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
9665 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9666 input_section
->reloc_count
-= deleted
;
9670 fprintf (stderr
, "\n");
9673 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9674 && input_section
->size
!= input_section
->rawsize
9675 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9676 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9678 /* Branch around the trampolines. */
9679 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9680 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9683 if (htab
->params
->ppc476_workaround
9684 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9685 && (!bfd_link_relocatable (info
)
9686 || (input_section
->output_section
->alignment_power
9687 >= htab
->params
->pagesize_p2
)))
9689 bfd_vma start_addr
, end_addr
, addr
;
9690 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9692 if (relax_info
->workaround_size
!= 0)
9698 bfd_put_32 (input_bfd
, BA
, fill
);
9699 p
= contents
+ input_section
->size
- relax_info
->workaround_size
;
9700 n
= relax_info
->workaround_size
>> 2;
9703 memcpy (p
, fill
, 4);
9708 /* The idea is: Replace the last instruction on a page with a
9709 branch to a patch area. Put the insn there followed by a
9710 branch back to the next page. Complicated a little by
9711 needing to handle moved conditional branches, and by not
9712 wanting to touch data-in-text. */
9714 start_addr
= (input_section
->output_section
->vma
9715 + input_section
->output_offset
);
9716 end_addr
= (start_addr
+ input_section
->size
9717 - relax_info
->workaround_size
);
9718 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9722 bfd_vma offset
= addr
- start_addr
;
9723 Elf_Internal_Rela
*lo
, *hi
;
9724 bfd_boolean is_data
;
9725 bfd_vma patch_off
, patch_addr
;
9728 /* Do we have a data reloc at this offset? If so, leave
9736 rel
= lo
+ (hi
- lo
) / 2;
9737 if (rel
->r_offset
< offset
)
9739 else if (rel
->r_offset
> offset
+ 3)
9743 switch (ELF32_R_TYPE (rel
->r_info
))
9760 /* Some instructions can be left alone too. Unconditional
9761 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9762 avoid the icache failure.
9764 The problem occurs due to prefetch across a page boundary
9765 where stale instructions can be fetched from the next
9766 page, and the mechanism for flushing these bad
9767 instructions fails under certain circumstances. The
9768 unconditional branches:
9769 1) Branch: b, bl, ba, bla,
9770 2) Branch Conditional: bc, bca, bcl, bcla,
9771 3) Branch Conditional to Link Register: bclr, bclrl,
9772 where (2) and (3) have BO=0x14 making them unconditional,
9773 prevent the bad prefetch because the prefetch itself is
9774 affected by these instructions. This happens even if the
9775 instruction is not executed.
9780 . addi 9,9,new_page@l
9787 The bctr is not predicted taken due to ctr not being
9788 ready, so prefetch continues on past the bctr into the
9789 new page which might have stale instructions. If they
9790 fail to be flushed, then they will be executed after the
9791 bctr executes. Either of the following modifications
9792 prevent the bad prefetch from happening in the first
9795 . lis 9,new_page@ha lis 9,new_page@ha
9796 . addi 9,9,new_page@l addi 9,9,new_page@l
9799 . nop b somewhere_else
9800 . b somewhere_else nop
9801 . new_page: new_page:
9803 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9804 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9805 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9806 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9807 || ((insn
& (0x3f << 26)) == (19u << 26)
9808 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9809 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9812 patch_addr
= (start_addr
+ input_section
->size
9813 - relax_info
->workaround_size
);
9814 patch_addr
= (patch_addr
+ 15) & -16;
9815 patch_off
= patch_addr
- start_addr
;
9816 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9819 && rel
->r_offset
>= offset
9820 && rel
->r_offset
< offset
+ 4)
9824 /* If the insn we are patching had a reloc, adjust the
9825 reloc r_offset so that the reloc applies to the moved
9826 location. This matters for -r and --emit-relocs. */
9827 if (rel
+ 1 != relend
)
9829 Elf_Internal_Rela tmp
= *rel
;
9831 /* Keep the relocs sorted by r_offset. */
9832 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9835 relend
[-1].r_offset
+= patch_off
- offset
;
9837 /* Adjust REL16 addends too. */
9838 switch (ELF32_R_TYPE (relend
[-1].r_info
))
9841 case R_PPC_REL16_LO
:
9842 case R_PPC_REL16_HI
:
9843 case R_PPC_REL16_HA
:
9844 relend
[-1].r_addend
+= patch_off
- offset
;
9850 /* If we are building a PIE or shared library with
9851 non-PIC objects, perhaps we had a dynamic reloc too?
9852 If so, the dynamic reloc must move with the insn. */
9853 sreloc
= elf_section_data (input_section
)->sreloc
;
9856 Elf32_External_Rela
*slo
, *shi
, *srelend
;
9859 slo
= (Elf32_External_Rela
*) sreloc
->contents
;
9860 shi
= srelend
= slo
+ sreloc
->reloc_count
;
9861 soffset
= (offset
+ input_section
->output_section
->vma
9862 + input_section
->output_offset
);
9865 Elf32_External_Rela
*srel
= slo
+ (shi
- slo
) / 2;
9866 bfd_elf32_swap_reloca_in (output_bfd
, (bfd_byte
*) srel
,
9868 if (outrel
.r_offset
< soffset
)
9870 else if (outrel
.r_offset
> soffset
+ 3)
9874 if (srel
+ 1 != srelend
)
9876 memmove (srel
, srel
+ 1,
9877 (srelend
- (srel
+ 1)) * sizeof (*srel
));
9880 outrel
.r_offset
+= patch_off
- offset
;
9881 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
9891 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9892 && (insn
& 2) == 0 /* relative */)
9894 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
9896 delta
+= offset
- patch_off
;
9897 if (bfd_link_relocatable (info
) && rel
!= NULL
)
9899 if (!bfd_link_relocatable (info
) && rel
!= NULL
)
9901 enum elf_ppc_reloc_type r_type
;
9903 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
9904 if (r_type
== R_PPC_REL14_BRTAKEN
)
9905 insn
|= BRANCH_PREDICT_BIT
;
9906 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
9907 insn
&= ~BRANCH_PREDICT_BIT
;
9909 BFD_ASSERT (r_type
== R_PPC_REL14
);
9911 if ((r_type
== R_PPC_REL14_BRTAKEN
9912 || r_type
== R_PPC_REL14_BRNTAKEN
)
9913 && delta
+ 0x8000 < 0x10000
9914 && (bfd_signed_vma
) delta
< 0)
9915 insn
^= BRANCH_PREDICT_BIT
;
9917 if (delta
+ 0x8000 < 0x10000)
9919 bfd_put_32 (input_bfd
,
9920 (insn
& ~0xfffc) | (delta
& 0xfffc),
9921 contents
+ patch_off
);
9923 bfd_put_32 (input_bfd
,
9924 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9925 contents
+ patch_off
);
9932 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
9934 relend
[-1].r_offset
+= 8;
9935 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
9937 bfd_put_32 (input_bfd
,
9938 (insn
& ~0xfffc) | 8,
9939 contents
+ patch_off
);
9941 bfd_put_32 (input_bfd
,
9942 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9943 contents
+ patch_off
);
9945 bfd_put_32 (input_bfd
,
9946 B
| ((delta
- 8) & 0x3fffffc),
9947 contents
+ patch_off
);
9953 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
9955 bfd_put_32 (input_bfd
,
9956 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9957 contents
+ patch_off
);
9960 BFD_ASSERT (patch_off
<= input_section
->size
);
9961 relax_info
->workaround_size
= input_section
->size
- patch_off
;
9968 /* Finish up dynamic symbol handling. We set the contents of various
9969 dynamic sections here. */
9972 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9973 struct bfd_link_info
*info
,
9974 struct elf_link_hash_entry
*h
,
9975 Elf_Internal_Sym
*sym
)
9977 struct ppc_elf_link_hash_table
*htab
;
9978 struct plt_entry
*ent
;
9979 bfd_boolean doneone
;
9982 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
9983 h
->root
.root
.string
);
9986 htab
= ppc_elf_hash_table (info
);
9987 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
9990 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9991 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9995 Elf_Internal_Rela rela
;
9997 bfd_vma reloc_index
;
9999 if (htab
->plt_type
== PLT_NEW
10000 || !htab
->elf
.dynamic_sections_created
10001 || h
->dynindx
== -1)
10002 reloc_index
= ent
->plt
.offset
/ 4;
10005 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
10006 / htab
->plt_slot_size
);
10007 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
10008 && htab
->plt_type
== PLT_OLD
)
10009 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
10012 /* This symbol has an entry in the procedure linkage table.
10014 if (htab
->plt_type
== PLT_VXWORKS
10015 && htab
->elf
.dynamic_sections_created
10016 && h
->dynindx
!= -1)
10018 bfd_vma got_offset
;
10019 const bfd_vma
*plt_entry
;
10021 /* The first three entries in .got.plt are reserved. */
10022 got_offset
= (reloc_index
+ 3) * 4;
10024 /* Use the right PLT. */
10025 plt_entry
= bfd_link_pic (info
) ? ppc_elf_vxworks_pic_plt_entry
10026 : ppc_elf_vxworks_plt_entry
;
10028 /* Fill in the .plt on VxWorks. */
10029 if (bfd_link_pic (info
))
10031 bfd_put_32 (output_bfd
,
10032 plt_entry
[0] | PPC_HA (got_offset
),
10033 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 0);
10034 bfd_put_32 (output_bfd
,
10035 plt_entry
[1] | PPC_LO (got_offset
),
10036 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 4);
10040 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
10042 bfd_put_32 (output_bfd
,
10043 plt_entry
[0] | PPC_HA (got_loc
),
10044 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 0);
10045 bfd_put_32 (output_bfd
,
10046 plt_entry
[1] | PPC_LO (got_loc
),
10047 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 4);
10050 bfd_put_32 (output_bfd
, plt_entry
[2],
10051 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 8);
10052 bfd_put_32 (output_bfd
, plt_entry
[3],
10053 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 12);
10055 /* This instruction is an immediate load. The value loaded is
10056 the byte offset of the R_PPC_JMP_SLOT relocation from the
10057 start of the .rela.plt section. The value is stored in the
10058 low-order 16 bits of the load instruction. */
10059 /* NOTE: It appears that this is now an index rather than a
10060 prescaled offset. */
10061 bfd_put_32 (output_bfd
,
10062 plt_entry
[4] | reloc_index
,
10063 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 16);
10064 /* This instruction is a PC-relative branch whose target is
10065 the start of the PLT section. The address of this branch
10066 instruction is 20 bytes beyond the start of this PLT entry.
10067 The address is encoded in bits 6-29, inclusive. The value
10068 stored is right-shifted by two bits, permitting a 26-bit
10070 bfd_put_32 (output_bfd
,
10072 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
10073 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 20);
10074 bfd_put_32 (output_bfd
, plt_entry
[6],
10075 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 24);
10076 bfd_put_32 (output_bfd
, plt_entry
[7],
10077 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 28);
10079 /* Fill in the GOT entry corresponding to this PLT slot with
10080 the address immediately after the "bctr" instruction
10081 in this PLT entry. */
10082 bfd_put_32 (output_bfd
, (htab
->elf
.splt
->output_section
->vma
10083 + htab
->elf
.splt
->output_offset
10084 + ent
->plt
.offset
+ 16),
10085 htab
->elf
.sgotplt
->contents
+ got_offset
);
10087 if (!bfd_link_pic (info
))
10089 /* Fill in a couple of entries in .rela.plt.unloaded. */
10090 loc
= htab
->srelplt2
->contents
10091 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
10092 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
10093 * sizeof (Elf32_External_Rela
));
10095 /* Provide the @ha relocation for the first instruction. */
10096 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10097 + htab
->elf
.splt
->output_offset
10098 + ent
->plt
.offset
+ 2);
10099 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10101 rela
.r_addend
= got_offset
;
10102 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10103 loc
+= sizeof (Elf32_External_Rela
);
10105 /* Provide the @l relocation for the second instruction. */
10106 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10107 + htab
->elf
.splt
->output_offset
10108 + ent
->plt
.offset
+ 6);
10109 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10111 rela
.r_addend
= got_offset
;
10112 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10113 loc
+= sizeof (Elf32_External_Rela
);
10115 /* Provide a relocation for the GOT entry corresponding to this
10116 PLT slot. Point it at the middle of the .plt entry. */
10117 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
10118 + htab
->elf
.sgotplt
->output_offset
10120 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
10122 rela
.r_addend
= ent
->plt
.offset
+ 16;
10123 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10126 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10127 In particular, the offset for the relocation is not the
10128 address of the PLT entry for this function, as specified
10129 by the ABI. Instead, the offset is set to the address of
10130 the GOT slot for this function. See EABI 4.4.4.1. */
10131 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
10132 + htab
->elf
.sgotplt
->output_offset
10138 asection
*splt
= htab
->elf
.splt
;
10139 if (!htab
->elf
.dynamic_sections_created
10140 || h
->dynindx
== -1)
10141 splt
= htab
->elf
.iplt
;
10143 rela
.r_offset
= (splt
->output_section
->vma
10144 + splt
->output_offset
10145 + ent
->plt
.offset
);
10146 if (htab
->plt_type
== PLT_OLD
10147 || !htab
->elf
.dynamic_sections_created
10148 || h
->dynindx
== -1)
10150 /* We don't need to fill in the .plt. The ppc dynamic
10151 linker will fill it in. */
10155 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
10156 + htab
->glink
->output_section
->vma
10157 + htab
->glink
->output_offset
);
10158 bfd_put_32 (output_bfd
, val
,
10159 splt
->contents
+ ent
->plt
.offset
);
10163 /* Fill in the entry in the .rela.plt section. */
10165 if (!htab
->elf
.dynamic_sections_created
10166 || h
->dynindx
== -1)
10168 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
10170 && (h
->root
.type
== bfd_link_hash_defined
10171 || h
->root
.type
== bfd_link_hash_defweak
));
10172 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
10173 rela
.r_addend
= SYM_VAL (h
);
10176 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
10178 if (!htab
->elf
.dynamic_sections_created
10179 || h
->dynindx
== -1)
10181 loc
= (htab
->elf
.irelplt
->contents
10182 + (htab
->elf
.irelplt
->reloc_count
++
10183 * sizeof (Elf32_External_Rela
)));
10184 htab
->local_ifunc_resolver
= 1;
10188 loc
= (htab
->elf
.srelplt
->contents
10189 + reloc_index
* sizeof (Elf32_External_Rela
));
10190 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
10191 htab
->maybe_local_ifunc_resolver
= 1;
10193 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10195 if (!h
->def_regular
)
10197 /* Mark the symbol as undefined, rather than as
10198 defined in the .plt section. Leave the value if
10199 there were any relocations where pointer equality
10200 matters (this is a clue for the dynamic linker, to
10201 make function pointer comparisons work between an
10202 application and shared library), otherwise set it
10204 sym
->st_shndx
= SHN_UNDEF
;
10205 if (!h
->pointer_equality_needed
)
10207 else if (!h
->ref_regular_nonweak
)
10209 /* This breaks function pointer comparisons, but
10210 that is better than breaking tests for a NULL
10211 function pointer. */
10215 else if (h
->type
== STT_GNU_IFUNC
10216 && !bfd_link_pic (info
))
10218 /* Set the value of ifunc symbols in a non-pie
10219 executable to the glink entry. This is to avoid
10220 text relocations. We can't do this for ifunc in
10221 allocate_dynrelocs, as we do for normal dynamic
10222 function symbols with plt entries, because we need
10223 to keep the original value around for the ifunc
10225 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
10226 (output_bfd
, htab
->glink
->output_section
));
10227 sym
->st_value
= (ent
->glink_offset
10228 + htab
->glink
->output_offset
10229 + htab
->glink
->output_section
->vma
);
10234 if (htab
->plt_type
== PLT_NEW
10235 || !htab
->elf
.dynamic_sections_created
10236 || h
->dynindx
== -1)
10239 asection
*splt
= htab
->elf
.splt
;
10241 if (!htab
->elf
.dynamic_sections_created
10242 || h
->dynindx
== -1)
10243 splt
= htab
->elf
.iplt
;
10245 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
10246 write_glink_stub (h
, ent
, splt
, p
, info
);
10248 if (!bfd_link_pic (info
))
10249 /* We only need one non-PIC glink stub. */
10259 Elf_Internal_Rela rela
;
10262 /* This symbols needs a copy reloc. Set it up. */
10265 fprintf (stderr
, ", copy");
10268 BFD_ASSERT (h
->dynindx
!= -1);
10270 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
10272 else if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
10273 s
= htab
->elf
.sreldynrelro
;
10275 s
= htab
->elf
.srelbss
;
10276 BFD_ASSERT (s
!= NULL
);
10278 rela
.r_offset
= SYM_VAL (h
);
10279 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
10281 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
10282 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10286 fprintf (stderr
, "\n");
10292 static enum elf_reloc_type_class
10293 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
10294 const asection
*rel_sec
,
10295 const Elf_Internal_Rela
*rela
)
10297 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
10299 if (rel_sec
== htab
->elf
.irelplt
)
10300 return reloc_class_ifunc
;
10302 switch (ELF32_R_TYPE (rela
->r_info
))
10304 case R_PPC_RELATIVE
:
10305 return reloc_class_relative
;
10306 case R_PPC_JMP_SLOT
:
10307 return reloc_class_plt
;
10309 return reloc_class_copy
;
10311 return reloc_class_normal
;
10315 /* Finish up the dynamic sections. */
10318 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
10319 struct bfd_link_info
*info
)
10322 struct ppc_elf_link_hash_table
*htab
;
10325 bfd_boolean ret
= TRUE
;
10328 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
10331 htab
= ppc_elf_hash_table (info
);
10332 dynobj
= htab
->elf
.dynobj
;
10333 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
10336 if (htab
->elf
.hgot
!= NULL
)
10337 got
= SYM_VAL (htab
->elf
.hgot
);
10339 if (htab
->elf
.dynamic_sections_created
)
10341 Elf32_External_Dyn
*dyncon
, *dynconend
;
10343 BFD_ASSERT (htab
->elf
.splt
!= NULL
&& sdyn
!= NULL
);
10345 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
10346 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10347 for (; dyncon
< dynconend
; dyncon
++)
10349 Elf_Internal_Dyn dyn
;
10352 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10357 if (htab
->is_vxworks
)
10358 s
= htab
->elf
.sgotplt
;
10360 s
= htab
->elf
.splt
;
10361 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10365 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
10369 s
= htab
->elf
.srelplt
;
10370 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10374 dyn
.d_un
.d_ptr
= got
;
10378 if (htab
->local_ifunc_resolver
)
10379 info
->callbacks
->einfo
10380 (_("%X%P: text relocations and GNU indirect "
10381 "functions will result in a segfault at runtime\n"));
10382 else if (htab
->maybe_local_ifunc_resolver
)
10383 info
->callbacks
->einfo
10384 (_("%P: warning: text relocations and GNU indirect "
10385 "functions may result in a segfault at runtime\n"));
10389 if (htab
->is_vxworks
10390 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
10395 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10399 if (htab
->elf
.sgot
!= NULL
10400 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
10402 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->elf
.sgot
10403 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->elf
.sgotplt
)
10405 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
10407 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
10408 if (htab
->plt_type
== PLT_OLD
)
10410 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10411 so that a function can easily find the address of
10412 _GLOBAL_OFFSET_TABLE_. */
10413 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
10414 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10415 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
10420 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
10421 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
10422 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10423 bfd_put_32 (output_bfd
, val
, p
);
10428 /* xgettext:c-format */
10429 info
->callbacks
->einfo (_("%P: %s not defined in linker created %s\n"),
10430 htab
->elf
.hgot
->root
.root
.string
,
10431 (htab
->elf
.sgotplt
!= NULL
10432 ? htab
->elf
.sgotplt
->name
10433 : htab
->elf
.sgot
->name
));
10434 bfd_set_error (bfd_error_bad_value
);
10438 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
10441 /* Fill in the first entry in the VxWorks procedure linkage table. */
10442 if (htab
->is_vxworks
10443 && htab
->elf
.splt
!= NULL
10444 && htab
->elf
.splt
->size
!= 0
10445 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
10447 asection
*splt
= htab
->elf
.splt
;
10448 /* Use the right PLT. */
10449 const bfd_vma
*plt_entry
= (bfd_link_pic (info
)
10450 ? ppc_elf_vxworks_pic_plt0_entry
10451 : ppc_elf_vxworks_plt0_entry
);
10453 if (!bfd_link_pic (info
))
10455 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
10457 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
10458 splt
->contents
+ 0);
10459 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
10460 splt
->contents
+ 4);
10464 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
10465 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
10467 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
10468 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
10469 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
10470 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
10471 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
10472 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
10474 if (! bfd_link_pic (info
))
10476 Elf_Internal_Rela rela
;
10479 loc
= htab
->srelplt2
->contents
;
10481 /* Output the @ha relocation for the first instruction. */
10482 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10483 + htab
->elf
.splt
->output_offset
10485 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10487 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10488 loc
+= sizeof (Elf32_External_Rela
);
10490 /* Output the @l relocation for the second instruction. */
10491 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10492 + htab
->elf
.splt
->output_offset
10494 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10496 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10497 loc
+= sizeof (Elf32_External_Rela
);
10499 /* Fix up the remaining relocations. They may have the wrong
10500 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10501 in which symbols were output. */
10502 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
10504 Elf_Internal_Rela rel
;
10506 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10507 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10508 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10509 loc
+= sizeof (Elf32_External_Rela
);
10511 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10512 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10513 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10514 loc
+= sizeof (Elf32_External_Rela
);
10516 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10517 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
10518 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10519 loc
+= sizeof (Elf32_External_Rela
);
10524 if (htab
->glink
!= NULL
10525 && htab
->glink
->contents
!= NULL
10526 && htab
->elf
.dynamic_sections_created
)
10529 unsigned char *endp
;
10533 * PIC glink code is the following:
10535 * # ith PLT code stub.
10536 * addis 11,30,(plt+(i-1)*4-got)@ha
10537 * lwz 11,(plt+(i-1)*4-got)@l(11)
10541 * # A table of branches, one for each plt entry.
10542 * # The idea is that the plt call stub loads ctr and r11 with these
10543 * # addresses, so (r11 - res_0) gives the plt index * 4.
10544 * res_0: b PLTresolve
10545 * res_1: b PLTresolve
10547 * # Some number of entries towards the end can be nops
10553 * addis 11,11,(1f-res_0)@ha
10556 * 1: addi 11,11,(1b-res_0)@l
10559 * sub 11,11,12 # r11 = index * 4
10560 * addis 12,12,(got+4-1b)@ha
10561 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10562 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10565 * add 11,0,11 # r11 = index * 12 = reloc offset.
10568 * Non-PIC glink code is a little simpler.
10570 * # ith PLT code stub.
10571 * lis 11,(plt+(i-1)*4)@ha
10572 * lwz 11,(plt+(i-1)*4)@l(11)
10576 * The branch table is the same, then comes
10579 * lis 12,(got+4)@ha
10580 * addis 11,11,(-res_0)@ha
10581 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10582 * addi 11,11,(-res_0)@l # r11 = index * 4
10585 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10586 * add 11,0,11 # r11 = index * 12 = reloc offset.
10590 /* Build the branch table, one for each plt entry (less one),
10591 and perhaps some padding. */
10592 p
= htab
->glink
->contents
;
10593 p
+= htab
->glink_pltresolve
;
10594 endp
= htab
->glink
->contents
;
10595 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10596 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10598 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10603 bfd_put_32 (output_bfd
, NOP
, p
);
10607 res0
= (htab
->glink_pltresolve
10608 + htab
->glink
->output_section
->vma
10609 + htab
->glink
->output_offset
);
10611 if (htab
->params
->ppc476_workaround
)
10613 /* Ensure that a call stub at the end of a page doesn't
10614 result in prefetch over the end of the page into the
10615 glink branch table. */
10616 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10618 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10619 + htab
->glink
->output_offset
);
10621 for (page_addr
= res0
& -pagesize
;
10622 page_addr
> glink_start
;
10623 page_addr
-= pagesize
)
10625 /* We have a plt call stub that may need fixing. */
10629 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10630 insn
= bfd_get_32 (output_bfd
, loc
);
10633 /* By alignment, we know that there must be at least
10634 one other call stub before this one. */
10635 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10637 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10639 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10644 /* Last comes the PLTresolve stub. */
10645 endp
= p
+ GLINK_PLTRESOLVE
;
10646 if (bfd_link_pic (info
))
10650 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10651 + htab
->glink
->output_section
->vma
10652 + htab
->glink
->output_offset
);
10654 bfd_put_32 (output_bfd
, ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
);
10656 bfd_put_32 (output_bfd
, MFLR_0
, p
);
10658 bfd_put_32 (output_bfd
, BCL_20_31
, p
);
10660 bfd_put_32 (output_bfd
, ADDI_11_11
+ PPC_LO (bcl
- res0
), p
);
10662 bfd_put_32 (output_bfd
, MFLR_12
, p
);
10664 bfd_put_32 (output_bfd
, MTLR_0
, p
);
10666 bfd_put_32 (output_bfd
, SUB_11_11_12
, p
);
10668 bfd_put_32 (output_bfd
, ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
);
10670 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10672 bfd_put_32 (output_bfd
, LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
);
10674 bfd_put_32 (output_bfd
, LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
);
10679 bfd_put_32 (output_bfd
, LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
);
10681 bfd_put_32 (output_bfd
, LWZ_12_12
+ 4, p
);
10684 bfd_put_32 (output_bfd
, MTCTR_0
, p
);
10686 bfd_put_32 (output_bfd
, ADD_0_11_11
, p
);
10690 bfd_put_32 (output_bfd
, LIS_12
+ PPC_HA (got
+ 4), p
);
10692 bfd_put_32 (output_bfd
, ADDIS_11_11
+ PPC_HA (-res0
), p
);
10694 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10695 bfd_put_32 (output_bfd
, LWZ_0_12
+ PPC_LO (got
+ 4), p
);
10697 bfd_put_32 (output_bfd
, LWZU_0_12
+ PPC_LO (got
+ 4), p
);
10699 bfd_put_32 (output_bfd
, ADDI_11_11
+ PPC_LO (-res0
), p
);
10701 bfd_put_32 (output_bfd
, MTCTR_0
, p
);
10703 bfd_put_32 (output_bfd
, ADD_0_11_11
, p
);
10705 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10706 bfd_put_32 (output_bfd
, LWZ_12_12
+ PPC_LO (got
+ 8), p
);
10708 bfd_put_32 (output_bfd
, LWZ_12_12
+ 4, p
);
10711 bfd_put_32 (output_bfd
, ADD_11_0_11
, p
);
10713 p
= output_bctr (htab
, output_bfd
, p
);
10716 bfd_put_32 (output_bfd
,
10717 htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
10720 BFD_ASSERT (p
== endp
);
10723 if (htab
->glink_eh_frame
!= NULL
10724 && htab
->glink_eh_frame
->contents
!= NULL
)
10726 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10729 p
+= sizeof (glink_eh_frame_cie
);
10734 /* Offset to .glink. */
10735 val
= (htab
->glink
->output_section
->vma
10736 + htab
->glink
->output_offset
);
10737 val
-= (htab
->glink_eh_frame
->output_section
->vma
10738 + htab
->glink_eh_frame
->output_offset
);
10739 val
-= p
- htab
->glink_eh_frame
->contents
;
10740 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10742 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10743 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10744 htab
->glink_eh_frame
,
10745 htab
->glink_eh_frame
->contents
))
10752 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10753 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10754 #define TARGET_BIG_SYM powerpc_elf32_vec
10755 #define TARGET_BIG_NAME "elf32-powerpc"
10756 #define ELF_ARCH bfd_arch_powerpc
10757 #define ELF_TARGET_ID PPC32_ELF_DATA
10758 #define ELF_MACHINE_CODE EM_PPC
10759 #ifdef __QNXTARGET__
10760 #define ELF_MAXPAGESIZE 0x1000
10761 #define ELF_COMMONPAGESIZE 0x1000
10763 #define ELF_MAXPAGESIZE 0x10000
10764 #define ELF_COMMONPAGESIZE 0x10000
10766 #define ELF_MINPAGESIZE 0x1000
10767 #define elf_info_to_howto ppc_elf_info_to_howto
10769 #ifdef EM_CYGNUS_POWERPC
10770 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10774 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10777 #define elf_backend_plt_not_loaded 1
10778 #define elf_backend_want_dynrelro 1
10779 #define elf_backend_can_gc_sections 1
10780 #define elf_backend_can_refcount 1
10781 #define elf_backend_rela_normal 1
10782 #define elf_backend_caches_rawsize 1
10784 #define bfd_elf32_mkobject ppc_elf_mkobject
10785 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10786 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10787 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10788 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10789 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10790 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10791 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10793 #define elf_backend_object_p ppc_elf_object_p
10794 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10795 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10796 #define elf_backend_relocate_section ppc_elf_relocate_section
10797 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10798 #define elf_backend_check_relocs ppc_elf_check_relocs
10799 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10800 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10801 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10802 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10803 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10804 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10805 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10806 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10807 #define elf_backend_fake_sections ppc_elf_fake_sections
10808 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10809 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10810 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10811 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10812 #define elf_backend_write_core_note ppc_elf_write_core_note
10813 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10814 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10815 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10816 #define elf_backend_write_section ppc_elf_write_section
10817 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10818 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10819 #define elf_backend_action_discarded ppc_elf_action_discarded
10820 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10821 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10823 #include "elf32-target.h"
10825 /* FreeBSD Target */
10827 #undef TARGET_LITTLE_SYM
10828 #undef TARGET_LITTLE_NAME
10830 #undef TARGET_BIG_SYM
10831 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10832 #undef TARGET_BIG_NAME
10833 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10836 #define ELF_OSABI ELFOSABI_FREEBSD
10839 #define elf32_bed elf32_powerpc_fbsd_bed
10841 #include "elf32-target.h"
10843 /* VxWorks Target */
10845 #undef TARGET_LITTLE_SYM
10846 #undef TARGET_LITTLE_NAME
10848 #undef TARGET_BIG_SYM
10849 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10850 #undef TARGET_BIG_NAME
10851 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10855 /* VxWorks uses the elf default section flags for .plt. */
10856 static const struct bfd_elf_special_section
*
10857 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd
, asection
*sec
)
10859 if (sec
->name
== NULL
)
10862 if (strcmp (sec
->name
, ".plt") == 0)
10863 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
10865 return ppc_elf_get_sec_type_attr (abfd
, sec
);
10868 /* Like ppc_elf_link_hash_table_create, but overrides
10869 appropriately for VxWorks. */
10870 static struct bfd_link_hash_table
*
10871 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
10873 struct bfd_link_hash_table
*ret
;
10875 ret
= ppc_elf_link_hash_table_create (abfd
);
10878 struct ppc_elf_link_hash_table
*htab
10879 = (struct ppc_elf_link_hash_table
*)ret
;
10880 htab
->is_vxworks
= 1;
10881 htab
->plt_type
= PLT_VXWORKS
;
10882 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
10883 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
10884 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
10889 /* Tweak magic VxWorks symbols as they are loaded. */
10891 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
10892 struct bfd_link_info
*info
,
10893 Elf_Internal_Sym
*sym
,
10894 const char **namep
,
10899 if (!elf_vxworks_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
,
10903 return ppc_elf_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
, valp
);
10907 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10909 ppc_elf_final_write_processing (abfd
, linker
);
10910 elf_vxworks_final_write_processing (abfd
, linker
);
10913 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10915 #undef elf_backend_want_plt_sym
10916 #define elf_backend_want_plt_sym 1
10917 #undef elf_backend_want_got_plt
10918 #define elf_backend_want_got_plt 1
10919 #undef elf_backend_got_symbol_offset
10920 #define elf_backend_got_symbol_offset 0
10921 #undef elf_backend_plt_not_loaded
10922 #define elf_backend_plt_not_loaded 0
10923 #undef elf_backend_plt_readonly
10924 #define elf_backend_plt_readonly 1
10925 #undef elf_backend_got_header_size
10926 #define elf_backend_got_header_size 12
10927 #undef elf_backend_dtrel_excludes_plt
10928 #define elf_backend_dtrel_excludes_plt 1
10930 #undef bfd_elf32_get_synthetic_symtab
10932 #undef bfd_elf32_bfd_link_hash_table_create
10933 #define bfd_elf32_bfd_link_hash_table_create \
10934 ppc_elf_vxworks_link_hash_table_create
10935 #undef elf_backend_add_symbol_hook
10936 #define elf_backend_add_symbol_hook \
10937 ppc_elf_vxworks_add_symbol_hook
10938 #undef elf_backend_link_output_symbol_hook
10939 #define elf_backend_link_output_symbol_hook \
10940 elf_vxworks_link_output_symbol_hook
10941 #undef elf_backend_final_write_processing
10942 #define elf_backend_final_write_processing \
10943 ppc_elf_vxworks_final_write_processing
10944 #undef elf_backend_get_sec_type_attr
10945 #define elf_backend_get_sec_type_attr \
10946 ppc_elf_vxworks_get_sec_type_attr
10947 #undef elf_backend_emit_relocs
10948 #define elf_backend_emit_relocs \
10949 elf_vxworks_emit_relocs
10952 #define elf32_bed ppc_elf_vxworks_bed
10953 #undef elf_backend_post_process_headers
10955 #include "elf32-target.h"