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) \
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 BEQLR 0x4d820020
159 #define CMPWI_11_0 0x2c0b0000
160 #define LIS_11 0x3d600000
161 #define LIS_12 0x3d800000
162 #define LWZU_0_12 0x840c0000
163 #define LWZ_0_12 0x800c0000
164 #define LWZ_11_3 0x81630000
165 #define LWZ_11_11 0x816b0000
166 #define LWZ_11_30 0x817e0000
167 #define LWZ_12_3 0x81830000
168 #define LWZ_12_12 0x818c0000
169 #define MR_0_3 0x7c601b78
170 #define MR_3_0 0x7c030378
171 #define MFLR_0 0x7c0802a6
172 #define MFLR_12 0x7d8802a6
173 #define MTCTR_0 0x7c0903a6
174 #define MTCTR_11 0x7d6903a6
175 #define MTLR_0 0x7c0803a6
176 #define NOP 0x60000000
177 #define SUB_11_11_12 0x7d6c5850
179 /* Offset of tp and dtp pointers from start of TLS block. */
180 #define TP_OFFSET 0x7000
181 #define DTP_OFFSET 0x8000
183 /* The value of a defined global symbol. */
184 #define SYM_VAL(SYM) \
185 ((SYM)->root.u.def.section->output_section->vma \
186 + (SYM)->root.u.def.section->output_offset \
187 + (SYM)->root.u.def.value)
189 static reloc_howto_type
*ppc_elf_howto_table
[R_PPC_max
];
191 static reloc_howto_type ppc_elf_howto_raw
[] = {
192 /* This reloc does nothing. */
193 HOWTO (R_PPC_NONE
, /* type */
195 3, /* size (0 = byte, 1 = short, 2 = long) */
197 FALSE
, /* pc_relative */
199 complain_overflow_dont
, /* complain_on_overflow */
200 bfd_elf_generic_reloc
, /* special_function */
201 "R_PPC_NONE", /* name */
202 FALSE
, /* partial_inplace */
205 FALSE
), /* pcrel_offset */
207 /* A standard 32 bit relocation. */
208 HOWTO (R_PPC_ADDR32
, /* type */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
212 FALSE
, /* pc_relative */
214 complain_overflow_dont
, /* complain_on_overflow */
215 bfd_elf_generic_reloc
, /* special_function */
216 "R_PPC_ADDR32", /* name */
217 FALSE
, /* partial_inplace */
219 0xffffffff, /* dst_mask */
220 FALSE
), /* pcrel_offset */
222 /* An absolute 26 bit branch; the lower two bits must be zero.
223 FIXME: we don't check that, we just clear them. */
224 HOWTO (R_PPC_ADDR24
, /* type */
226 2, /* size (0 = byte, 1 = short, 2 = long) */
228 FALSE
, /* pc_relative */
230 complain_overflow_signed
, /* complain_on_overflow */
231 bfd_elf_generic_reloc
, /* special_function */
232 "R_PPC_ADDR24", /* name */
233 FALSE
, /* partial_inplace */
235 0x3fffffc, /* dst_mask */
236 FALSE
), /* pcrel_offset */
238 /* A standard 16 bit relocation. */
239 HOWTO (R_PPC_ADDR16
, /* type */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
243 FALSE
, /* pc_relative */
245 complain_overflow_bitfield
, /* complain_on_overflow */
246 bfd_elf_generic_reloc
, /* special_function */
247 "R_PPC_ADDR16", /* name */
248 FALSE
, /* partial_inplace */
250 0xffff, /* dst_mask */
251 FALSE
), /* pcrel_offset */
253 /* A 16 bit relocation without overflow. */
254 HOWTO (R_PPC_ADDR16_LO
, /* type */
256 1, /* size (0 = byte, 1 = short, 2 = long) */
258 FALSE
, /* pc_relative */
260 complain_overflow_dont
,/* complain_on_overflow */
261 bfd_elf_generic_reloc
, /* special_function */
262 "R_PPC_ADDR16_LO", /* name */
263 FALSE
, /* partial_inplace */
265 0xffff, /* dst_mask */
266 FALSE
), /* pcrel_offset */
268 /* The high order 16 bits of an address. */
269 HOWTO (R_PPC_ADDR16_HI
, /* type */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
273 FALSE
, /* pc_relative */
275 complain_overflow_dont
, /* complain_on_overflow */
276 bfd_elf_generic_reloc
, /* special_function */
277 "R_PPC_ADDR16_HI", /* name */
278 FALSE
, /* partial_inplace */
280 0xffff, /* dst_mask */
281 FALSE
), /* pcrel_offset */
283 /* The high order 16 bits of an address, plus 1 if the contents of
284 the low 16 bits, treated as a signed number, is negative. */
285 HOWTO (R_PPC_ADDR16_HA
, /* type */
287 1, /* size (0 = byte, 1 = short, 2 = long) */
289 FALSE
, /* pc_relative */
291 complain_overflow_dont
, /* complain_on_overflow */
292 ppc_elf_addr16_ha_reloc
, /* special_function */
293 "R_PPC_ADDR16_HA", /* name */
294 FALSE
, /* partial_inplace */
296 0xffff, /* dst_mask */
297 FALSE
), /* pcrel_offset */
299 /* An absolute 16 bit branch; the lower two bits must be zero.
300 FIXME: we don't check that, we just clear them. */
301 HOWTO (R_PPC_ADDR14
, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE
, /* pc_relative */
307 complain_overflow_signed
, /* complain_on_overflow */
308 bfd_elf_generic_reloc
, /* special_function */
309 "R_PPC_ADDR14", /* name */
310 FALSE
, /* partial_inplace */
312 0xfffc, /* dst_mask */
313 FALSE
), /* pcrel_offset */
315 /* An absolute 16 bit branch, for which bit 10 should be set to
316 indicate that the branch is expected to be taken. The lower two
317 bits must be zero. */
318 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
322 FALSE
, /* pc_relative */
324 complain_overflow_signed
, /* complain_on_overflow */
325 bfd_elf_generic_reloc
, /* special_function */
326 "R_PPC_ADDR14_BRTAKEN",/* name */
327 FALSE
, /* partial_inplace */
329 0xfffc, /* dst_mask */
330 FALSE
), /* pcrel_offset */
332 /* An absolute 16 bit branch, for which bit 10 should be set to
333 indicate that the branch is not expected to be taken. The lower
334 two bits must be zero. */
335 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE
, /* pc_relative */
341 complain_overflow_signed
, /* complain_on_overflow */
342 bfd_elf_generic_reloc
, /* special_function */
343 "R_PPC_ADDR14_BRNTAKEN",/* name */
344 FALSE
, /* partial_inplace */
346 0xfffc, /* dst_mask */
347 FALSE
), /* pcrel_offset */
349 /* A relative 26 bit branch; the lower two bits must be zero. */
350 HOWTO (R_PPC_REL24
, /* type */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
354 TRUE
, /* pc_relative */
356 complain_overflow_signed
, /* complain_on_overflow */
357 bfd_elf_generic_reloc
, /* special_function */
358 "R_PPC_REL24", /* name */
359 FALSE
, /* partial_inplace */
361 0x3fffffc, /* dst_mask */
362 TRUE
), /* pcrel_offset */
364 /* A relative 16 bit branch; the lower two bits must be zero. */
365 HOWTO (R_PPC_REL14
, /* type */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
369 TRUE
, /* pc_relative */
371 complain_overflow_signed
, /* complain_on_overflow */
372 bfd_elf_generic_reloc
, /* special_function */
373 "R_PPC_REL14", /* name */
374 FALSE
, /* partial_inplace */
376 0xfffc, /* dst_mask */
377 TRUE
), /* pcrel_offset */
379 /* A relative 16 bit branch. Bit 10 should be set to indicate that
380 the branch is expected to be taken. The lower two bits must be
382 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
386 TRUE
, /* pc_relative */
388 complain_overflow_signed
, /* complain_on_overflow */
389 bfd_elf_generic_reloc
, /* special_function */
390 "R_PPC_REL14_BRTAKEN", /* name */
391 FALSE
, /* partial_inplace */
393 0xfffc, /* dst_mask */
394 TRUE
), /* pcrel_offset */
396 /* A relative 16 bit branch. Bit 10 should be set to indicate that
397 the branch is not expected to be taken. The lower two bits must
399 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
403 TRUE
, /* pc_relative */
405 complain_overflow_signed
, /* complain_on_overflow */
406 bfd_elf_generic_reloc
, /* special_function */
407 "R_PPC_REL14_BRNTAKEN",/* name */
408 FALSE
, /* partial_inplace */
410 0xfffc, /* dst_mask */
411 TRUE
), /* pcrel_offset */
413 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
415 HOWTO (R_PPC_GOT16
, /* type */
417 1, /* size (0 = byte, 1 = short, 2 = long) */
419 FALSE
, /* pc_relative */
421 complain_overflow_signed
, /* complain_on_overflow */
422 ppc_elf_unhandled_reloc
, /* special_function */
423 "R_PPC_GOT16", /* name */
424 FALSE
, /* partial_inplace */
426 0xffff, /* dst_mask */
427 FALSE
), /* pcrel_offset */
429 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
431 HOWTO (R_PPC_GOT16_LO
, /* type */
433 1, /* size (0 = byte, 1 = short, 2 = long) */
435 FALSE
, /* pc_relative */
437 complain_overflow_dont
, /* complain_on_overflow */
438 ppc_elf_unhandled_reloc
, /* special_function */
439 "R_PPC_GOT16_LO", /* name */
440 FALSE
, /* partial_inplace */
442 0xffff, /* dst_mask */
443 FALSE
), /* pcrel_offset */
445 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
447 HOWTO (R_PPC_GOT16_HI
, /* type */
449 1, /* size (0 = byte, 1 = short, 2 = long) */
451 FALSE
, /* pc_relative */
453 complain_overflow_dont
, /* complain_on_overflow */
454 ppc_elf_unhandled_reloc
, /* special_function */
455 "R_PPC_GOT16_HI", /* name */
456 FALSE
, /* partial_inplace */
458 0xffff, /* dst_mask */
459 FALSE
), /* pcrel_offset */
461 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
463 HOWTO (R_PPC_GOT16_HA
, /* type */
465 1, /* size (0 = byte, 1 = short, 2 = long) */
467 FALSE
, /* pc_relative */
469 complain_overflow_dont
, /* complain_on_overflow */
470 ppc_elf_unhandled_reloc
, /* special_function */
471 "R_PPC_GOT16_HA", /* name */
472 FALSE
, /* partial_inplace */
474 0xffff, /* dst_mask */
475 FALSE
), /* pcrel_offset */
477 /* Like R_PPC_REL24, but referring to the procedure linkage table
478 entry for the symbol. */
479 HOWTO (R_PPC_PLTREL24
, /* type */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
483 TRUE
, /* pc_relative */
485 complain_overflow_signed
, /* complain_on_overflow */
486 ppc_elf_unhandled_reloc
, /* special_function */
487 "R_PPC_PLTREL24", /* name */
488 FALSE
, /* partial_inplace */
490 0x3fffffc, /* dst_mask */
491 TRUE
), /* pcrel_offset */
493 /* This is used only by the dynamic linker. The symbol should exist
494 both in the object being run and in some shared library. The
495 dynamic linker copies the data addressed by the symbol from the
496 shared library into the object, because the object being
497 run has to have the data at some particular address. */
498 HOWTO (R_PPC_COPY
, /* type */
500 2, /* size (0 = byte, 1 = short, 2 = long) */
502 FALSE
, /* pc_relative */
504 complain_overflow_dont
, /* complain_on_overflow */
505 ppc_elf_unhandled_reloc
, /* special_function */
506 "R_PPC_COPY", /* name */
507 FALSE
, /* partial_inplace */
510 FALSE
), /* pcrel_offset */
512 /* Like R_PPC_ADDR32, but used when setting global offset table
514 HOWTO (R_PPC_GLOB_DAT
, /* type */
516 2, /* size (0 = byte, 1 = short, 2 = long) */
518 FALSE
, /* pc_relative */
520 complain_overflow_dont
, /* complain_on_overflow */
521 ppc_elf_unhandled_reloc
, /* special_function */
522 "R_PPC_GLOB_DAT", /* name */
523 FALSE
, /* partial_inplace */
525 0xffffffff, /* dst_mask */
526 FALSE
), /* pcrel_offset */
528 /* Marks a procedure linkage table entry for a symbol. */
529 HOWTO (R_PPC_JMP_SLOT
, /* type */
531 2, /* size (0 = byte, 1 = short, 2 = long) */
533 FALSE
, /* pc_relative */
535 complain_overflow_dont
, /* complain_on_overflow */
536 ppc_elf_unhandled_reloc
, /* special_function */
537 "R_PPC_JMP_SLOT", /* name */
538 FALSE
, /* partial_inplace */
541 FALSE
), /* pcrel_offset */
543 /* Used only by the dynamic linker. When the object is run, this
544 longword is set to the load address of the object, plus the
546 HOWTO (R_PPC_RELATIVE
, /* type */
548 2, /* size (0 = byte, 1 = short, 2 = long) */
550 FALSE
, /* pc_relative */
552 complain_overflow_dont
, /* complain_on_overflow */
553 bfd_elf_generic_reloc
, /* special_function */
554 "R_PPC_RELATIVE", /* name */
555 FALSE
, /* partial_inplace */
557 0xffffffff, /* dst_mask */
558 FALSE
), /* pcrel_offset */
560 /* Like R_PPC_REL24, but uses the value of the symbol within the
561 object rather than the final value. Normally used for
562 _GLOBAL_OFFSET_TABLE_. */
563 HOWTO (R_PPC_LOCAL24PC
, /* type */
565 2, /* size (0 = byte, 1 = short, 2 = long) */
567 TRUE
, /* pc_relative */
569 complain_overflow_signed
, /* complain_on_overflow */
570 bfd_elf_generic_reloc
, /* special_function */
571 "R_PPC_LOCAL24PC", /* name */
572 FALSE
, /* partial_inplace */
574 0x3fffffc, /* dst_mask */
575 TRUE
), /* pcrel_offset */
577 /* Like R_PPC_ADDR32, but may be unaligned. */
578 HOWTO (R_PPC_UADDR32
, /* type */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
582 FALSE
, /* pc_relative */
584 complain_overflow_dont
, /* complain_on_overflow */
585 bfd_elf_generic_reloc
, /* special_function */
586 "R_PPC_UADDR32", /* name */
587 FALSE
, /* partial_inplace */
589 0xffffffff, /* dst_mask */
590 FALSE
), /* pcrel_offset */
592 /* Like R_PPC_ADDR16, but may be unaligned. */
593 HOWTO (R_PPC_UADDR16
, /* type */
595 1, /* size (0 = byte, 1 = short, 2 = long) */
597 FALSE
, /* pc_relative */
599 complain_overflow_bitfield
, /* complain_on_overflow */
600 bfd_elf_generic_reloc
, /* special_function */
601 "R_PPC_UADDR16", /* name */
602 FALSE
, /* partial_inplace */
604 0xffff, /* dst_mask */
605 FALSE
), /* pcrel_offset */
607 /* 32-bit PC relative */
608 HOWTO (R_PPC_REL32
, /* type */
610 2, /* size (0 = byte, 1 = short, 2 = long) */
612 TRUE
, /* pc_relative */
614 complain_overflow_dont
, /* complain_on_overflow */
615 bfd_elf_generic_reloc
, /* special_function */
616 "R_PPC_REL32", /* name */
617 FALSE
, /* partial_inplace */
619 0xffffffff, /* dst_mask */
620 TRUE
), /* pcrel_offset */
622 /* 32-bit relocation to the symbol's procedure linkage table.
623 FIXME: not supported. */
624 HOWTO (R_PPC_PLT32
, /* type */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
628 FALSE
, /* pc_relative */
630 complain_overflow_dont
, /* complain_on_overflow */
631 ppc_elf_unhandled_reloc
, /* special_function */
632 "R_PPC_PLT32", /* name */
633 FALSE
, /* partial_inplace */
636 FALSE
), /* pcrel_offset */
638 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
639 FIXME: not supported. */
640 HOWTO (R_PPC_PLTREL32
, /* type */
642 2, /* size (0 = byte, 1 = short, 2 = long) */
644 TRUE
, /* pc_relative */
646 complain_overflow_dont
, /* complain_on_overflow */
647 ppc_elf_unhandled_reloc
, /* special_function */
648 "R_PPC_PLTREL32", /* name */
649 FALSE
, /* partial_inplace */
652 TRUE
), /* pcrel_offset */
654 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
656 HOWTO (R_PPC_PLT16_LO
, /* type */
658 1, /* size (0 = byte, 1 = short, 2 = long) */
660 FALSE
, /* pc_relative */
662 complain_overflow_dont
, /* complain_on_overflow */
663 ppc_elf_unhandled_reloc
, /* special_function */
664 "R_PPC_PLT16_LO", /* name */
665 FALSE
, /* partial_inplace */
667 0xffff, /* dst_mask */
668 FALSE
), /* pcrel_offset */
670 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
672 HOWTO (R_PPC_PLT16_HI
, /* type */
674 1, /* size (0 = byte, 1 = short, 2 = long) */
676 FALSE
, /* pc_relative */
678 complain_overflow_dont
, /* complain_on_overflow */
679 ppc_elf_unhandled_reloc
, /* special_function */
680 "R_PPC_PLT16_HI", /* name */
681 FALSE
, /* partial_inplace */
683 0xffff, /* dst_mask */
684 FALSE
), /* pcrel_offset */
686 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
688 HOWTO (R_PPC_PLT16_HA
, /* type */
690 1, /* size (0 = byte, 1 = short, 2 = long) */
692 FALSE
, /* pc_relative */
694 complain_overflow_dont
, /* complain_on_overflow */
695 ppc_elf_unhandled_reloc
, /* special_function */
696 "R_PPC_PLT16_HA", /* name */
697 FALSE
, /* partial_inplace */
699 0xffff, /* dst_mask */
700 FALSE
), /* pcrel_offset */
702 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
704 HOWTO (R_PPC_SDAREL16
, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE
, /* pc_relative */
710 complain_overflow_signed
, /* complain_on_overflow */
711 ppc_elf_unhandled_reloc
, /* special_function */
712 "R_PPC_SDAREL16", /* name */
713 FALSE
, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE
), /* pcrel_offset */
718 /* 16-bit section relative relocation. */
719 HOWTO (R_PPC_SECTOFF
, /* type */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
723 FALSE
, /* pc_relative */
725 complain_overflow_signed
, /* complain_on_overflow */
726 ppc_elf_unhandled_reloc
, /* special_function */
727 "R_PPC_SECTOFF", /* name */
728 FALSE
, /* partial_inplace */
730 0xffff, /* dst_mask */
731 FALSE
), /* pcrel_offset */
733 /* 16-bit lower half section relative relocation. */
734 HOWTO (R_PPC_SECTOFF_LO
, /* type */
736 1, /* size (0 = byte, 1 = short, 2 = long) */
738 FALSE
, /* pc_relative */
740 complain_overflow_dont
, /* complain_on_overflow */
741 ppc_elf_unhandled_reloc
, /* special_function */
742 "R_PPC_SECTOFF_LO", /* name */
743 FALSE
, /* partial_inplace */
745 0xffff, /* dst_mask */
746 FALSE
), /* pcrel_offset */
748 /* 16-bit upper half section relative relocation. */
749 HOWTO (R_PPC_SECTOFF_HI
, /* type */
751 1, /* size (0 = byte, 1 = short, 2 = long) */
753 FALSE
, /* pc_relative */
755 complain_overflow_dont
, /* complain_on_overflow */
756 ppc_elf_unhandled_reloc
, /* special_function */
757 "R_PPC_SECTOFF_HI", /* name */
758 FALSE
, /* partial_inplace */
760 0xffff, /* dst_mask */
761 FALSE
), /* pcrel_offset */
763 /* 16-bit upper half adjusted section relative relocation. */
764 HOWTO (R_PPC_SECTOFF_HA
, /* type */
766 1, /* size (0 = byte, 1 = short, 2 = long) */
768 FALSE
, /* pc_relative */
770 complain_overflow_dont
, /* complain_on_overflow */
771 ppc_elf_unhandled_reloc
, /* special_function */
772 "R_PPC_SECTOFF_HA", /* name */
773 FALSE
, /* partial_inplace */
775 0xffff, /* dst_mask */
776 FALSE
), /* pcrel_offset */
778 /* Marker relocs for TLS. */
781 2, /* size (0 = byte, 1 = short, 2 = long) */
783 FALSE
, /* pc_relative */
785 complain_overflow_dont
, /* complain_on_overflow */
786 bfd_elf_generic_reloc
, /* special_function */
787 "R_PPC_TLS", /* name */
788 FALSE
, /* partial_inplace */
791 FALSE
), /* pcrel_offset */
795 2, /* size (0 = byte, 1 = short, 2 = long) */
797 FALSE
, /* pc_relative */
799 complain_overflow_dont
, /* complain_on_overflow */
800 bfd_elf_generic_reloc
, /* special_function */
801 "R_PPC_TLSGD", /* name */
802 FALSE
, /* partial_inplace */
805 FALSE
), /* pcrel_offset */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE
, /* pc_relative */
813 complain_overflow_dont
, /* complain_on_overflow */
814 bfd_elf_generic_reloc
, /* special_function */
815 "R_PPC_TLSLD", /* name */
816 FALSE
, /* partial_inplace */
819 FALSE
), /* pcrel_offset */
821 /* Computes the load module index of the load module that contains the
822 definition of its TLS sym. */
823 HOWTO (R_PPC_DTPMOD32
,
825 2, /* size (0 = byte, 1 = short, 2 = long) */
827 FALSE
, /* pc_relative */
829 complain_overflow_dont
, /* complain_on_overflow */
830 ppc_elf_unhandled_reloc
, /* special_function */
831 "R_PPC_DTPMOD32", /* name */
832 FALSE
, /* partial_inplace */
834 0xffffffff, /* dst_mask */
835 FALSE
), /* pcrel_offset */
837 /* Computes a dtv-relative displacement, the difference between the value
838 of sym+add and the base address of the thread-local storage block that
839 contains the definition of sym, minus 0x8000. */
840 HOWTO (R_PPC_DTPREL32
,
842 2, /* size (0 = byte, 1 = short, 2 = long) */
844 FALSE
, /* pc_relative */
846 complain_overflow_dont
, /* complain_on_overflow */
847 ppc_elf_unhandled_reloc
, /* special_function */
848 "R_PPC_DTPREL32", /* name */
849 FALSE
, /* partial_inplace */
851 0xffffffff, /* dst_mask */
852 FALSE
), /* pcrel_offset */
854 /* A 16 bit dtprel reloc. */
855 HOWTO (R_PPC_DTPREL16
,
857 1, /* size (0 = byte, 1 = short, 2 = long) */
859 FALSE
, /* pc_relative */
861 complain_overflow_signed
, /* complain_on_overflow */
862 ppc_elf_unhandled_reloc
, /* special_function */
863 "R_PPC_DTPREL16", /* name */
864 FALSE
, /* partial_inplace */
866 0xffff, /* dst_mask */
867 FALSE
), /* pcrel_offset */
869 /* Like DTPREL16, but no overflow. */
870 HOWTO (R_PPC_DTPREL16_LO
,
872 1, /* size (0 = byte, 1 = short, 2 = long) */
874 FALSE
, /* pc_relative */
876 complain_overflow_dont
, /* complain_on_overflow */
877 ppc_elf_unhandled_reloc
, /* special_function */
878 "R_PPC_DTPREL16_LO", /* name */
879 FALSE
, /* partial_inplace */
881 0xffff, /* dst_mask */
882 FALSE
), /* pcrel_offset */
884 /* Like DTPREL16_LO, but next higher group of 16 bits. */
885 HOWTO (R_PPC_DTPREL16_HI
,
887 1, /* size (0 = byte, 1 = short, 2 = long) */
889 FALSE
, /* pc_relative */
891 complain_overflow_dont
, /* complain_on_overflow */
892 ppc_elf_unhandled_reloc
, /* special_function */
893 "R_PPC_DTPREL16_HI", /* name */
894 FALSE
, /* partial_inplace */
896 0xffff, /* dst_mask */
897 FALSE
), /* pcrel_offset */
899 /* Like DTPREL16_HI, but adjust for low 16 bits. */
900 HOWTO (R_PPC_DTPREL16_HA
,
902 1, /* size (0 = byte, 1 = short, 2 = long) */
904 FALSE
, /* pc_relative */
906 complain_overflow_dont
, /* complain_on_overflow */
907 ppc_elf_unhandled_reloc
, /* special_function */
908 "R_PPC_DTPREL16_HA", /* name */
909 FALSE
, /* partial_inplace */
911 0xffff, /* dst_mask */
912 FALSE
), /* pcrel_offset */
914 /* Computes a tp-relative displacement, the difference between the value of
915 sym+add and the value of the thread pointer (r13). */
916 HOWTO (R_PPC_TPREL32
,
918 2, /* size (0 = byte, 1 = short, 2 = long) */
920 FALSE
, /* pc_relative */
922 complain_overflow_dont
, /* complain_on_overflow */
923 ppc_elf_unhandled_reloc
, /* special_function */
924 "R_PPC_TPREL32", /* name */
925 FALSE
, /* partial_inplace */
927 0xffffffff, /* dst_mask */
928 FALSE
), /* pcrel_offset */
930 /* A 16 bit tprel reloc. */
931 HOWTO (R_PPC_TPREL16
,
933 1, /* size (0 = byte, 1 = short, 2 = long) */
935 FALSE
, /* pc_relative */
937 complain_overflow_signed
, /* complain_on_overflow */
938 ppc_elf_unhandled_reloc
, /* special_function */
939 "R_PPC_TPREL16", /* name */
940 FALSE
, /* partial_inplace */
942 0xffff, /* dst_mask */
943 FALSE
), /* pcrel_offset */
945 /* Like TPREL16, but no overflow. */
946 HOWTO (R_PPC_TPREL16_LO
,
948 1, /* size (0 = byte, 1 = short, 2 = long) */
950 FALSE
, /* pc_relative */
952 complain_overflow_dont
, /* complain_on_overflow */
953 ppc_elf_unhandled_reloc
, /* special_function */
954 "R_PPC_TPREL16_LO", /* name */
955 FALSE
, /* partial_inplace */
957 0xffff, /* dst_mask */
958 FALSE
), /* pcrel_offset */
960 /* Like TPREL16_LO, but next higher group of 16 bits. */
961 HOWTO (R_PPC_TPREL16_HI
,
963 1, /* size (0 = byte, 1 = short, 2 = long) */
965 FALSE
, /* pc_relative */
967 complain_overflow_dont
, /* complain_on_overflow */
968 ppc_elf_unhandled_reloc
, /* special_function */
969 "R_PPC_TPREL16_HI", /* name */
970 FALSE
, /* partial_inplace */
972 0xffff, /* dst_mask */
973 FALSE
), /* pcrel_offset */
975 /* Like TPREL16_HI, but adjust for low 16 bits. */
976 HOWTO (R_PPC_TPREL16_HA
,
978 1, /* size (0 = byte, 1 = short, 2 = long) */
980 FALSE
, /* pc_relative */
982 complain_overflow_dont
, /* complain_on_overflow */
983 ppc_elf_unhandled_reloc
, /* special_function */
984 "R_PPC_TPREL16_HA", /* name */
985 FALSE
, /* partial_inplace */
987 0xffff, /* dst_mask */
988 FALSE
), /* pcrel_offset */
990 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
991 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
992 to the first entry. */
993 HOWTO (R_PPC_GOT_TLSGD16
,
995 1, /* size (0 = byte, 1 = short, 2 = long) */
997 FALSE
, /* pc_relative */
999 complain_overflow_signed
, /* complain_on_overflow */
1000 ppc_elf_unhandled_reloc
, /* special_function */
1001 "R_PPC_GOT_TLSGD16", /* name */
1002 FALSE
, /* partial_inplace */
1004 0xffff, /* dst_mask */
1005 FALSE
), /* pcrel_offset */
1007 /* Like GOT_TLSGD16, but no overflow. */
1008 HOWTO (R_PPC_GOT_TLSGD16_LO
,
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 FALSE
, /* pc_relative */
1014 complain_overflow_dont
, /* complain_on_overflow */
1015 ppc_elf_unhandled_reloc
, /* special_function */
1016 "R_PPC_GOT_TLSGD16_LO", /* name */
1017 FALSE
, /* partial_inplace */
1019 0xffff, /* dst_mask */
1020 FALSE
), /* pcrel_offset */
1022 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1023 HOWTO (R_PPC_GOT_TLSGD16_HI
,
1024 16, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1027 FALSE
, /* pc_relative */
1029 complain_overflow_dont
, /* complain_on_overflow */
1030 ppc_elf_unhandled_reloc
, /* special_function */
1031 "R_PPC_GOT_TLSGD16_HI", /* name */
1032 FALSE
, /* partial_inplace */
1034 0xffff, /* dst_mask */
1035 FALSE
), /* pcrel_offset */
1037 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1038 HOWTO (R_PPC_GOT_TLSGD16_HA
,
1039 16, /* rightshift */
1040 1, /* size (0 = byte, 1 = short, 2 = long) */
1042 FALSE
, /* pc_relative */
1044 complain_overflow_dont
, /* complain_on_overflow */
1045 ppc_elf_unhandled_reloc
, /* special_function */
1046 "R_PPC_GOT_TLSGD16_HA", /* name */
1047 FALSE
, /* partial_inplace */
1049 0xffff, /* dst_mask */
1050 FALSE
), /* pcrel_offset */
1052 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1053 with values (sym+add)@dtpmod and zero, and computes the offset to the
1055 HOWTO (R_PPC_GOT_TLSLD16
,
1057 1, /* size (0 = byte, 1 = short, 2 = long) */
1059 FALSE
, /* pc_relative */
1061 complain_overflow_signed
, /* complain_on_overflow */
1062 ppc_elf_unhandled_reloc
, /* special_function */
1063 "R_PPC_GOT_TLSLD16", /* name */
1064 FALSE
, /* partial_inplace */
1066 0xffff, /* dst_mask */
1067 FALSE
), /* pcrel_offset */
1069 /* Like GOT_TLSLD16, but no overflow. */
1070 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1072 1, /* size (0 = byte, 1 = short, 2 = long) */
1074 FALSE
, /* pc_relative */
1076 complain_overflow_dont
, /* complain_on_overflow */
1077 ppc_elf_unhandled_reloc
, /* special_function */
1078 "R_PPC_GOT_TLSLD16_LO", /* name */
1079 FALSE
, /* partial_inplace */
1081 0xffff, /* dst_mask */
1082 FALSE
), /* pcrel_offset */
1084 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1085 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1086 16, /* rightshift */
1087 1, /* size (0 = byte, 1 = short, 2 = long) */
1089 FALSE
, /* pc_relative */
1091 complain_overflow_dont
, /* complain_on_overflow */
1092 ppc_elf_unhandled_reloc
, /* special_function */
1093 "R_PPC_GOT_TLSLD16_HI", /* name */
1094 FALSE
, /* partial_inplace */
1096 0xffff, /* dst_mask */
1097 FALSE
), /* pcrel_offset */
1099 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1100 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1101 16, /* rightshift */
1102 1, /* size (0 = byte, 1 = short, 2 = long) */
1104 FALSE
, /* pc_relative */
1106 complain_overflow_dont
, /* complain_on_overflow */
1107 ppc_elf_unhandled_reloc
, /* special_function */
1108 "R_PPC_GOT_TLSLD16_HA", /* name */
1109 FALSE
, /* partial_inplace */
1111 0xffff, /* dst_mask */
1112 FALSE
), /* pcrel_offset */
1114 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1115 the offset to the entry. */
1116 HOWTO (R_PPC_GOT_DTPREL16
,
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1120 FALSE
, /* pc_relative */
1122 complain_overflow_signed
, /* complain_on_overflow */
1123 ppc_elf_unhandled_reloc
, /* special_function */
1124 "R_PPC_GOT_DTPREL16", /* name */
1125 FALSE
, /* partial_inplace */
1127 0xffff, /* dst_mask */
1128 FALSE
), /* pcrel_offset */
1130 /* Like GOT_DTPREL16, but no overflow. */
1131 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1135 FALSE
, /* pc_relative */
1137 complain_overflow_dont
, /* complain_on_overflow */
1138 ppc_elf_unhandled_reloc
, /* special_function */
1139 "R_PPC_GOT_DTPREL16_LO", /* name */
1140 FALSE
, /* partial_inplace */
1142 0xffff, /* dst_mask */
1143 FALSE
), /* pcrel_offset */
1145 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1146 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1147 16, /* rightshift */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1150 FALSE
, /* pc_relative */
1152 complain_overflow_dont
, /* complain_on_overflow */
1153 ppc_elf_unhandled_reloc
, /* special_function */
1154 "R_PPC_GOT_DTPREL16_HI", /* name */
1155 FALSE
, /* partial_inplace */
1157 0xffff, /* dst_mask */
1158 FALSE
), /* pcrel_offset */
1160 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1161 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1162 16, /* rightshift */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1165 FALSE
, /* pc_relative */
1167 complain_overflow_dont
, /* complain_on_overflow */
1168 ppc_elf_unhandled_reloc
, /* special_function */
1169 "R_PPC_GOT_DTPREL16_HA", /* name */
1170 FALSE
, /* partial_inplace */
1172 0xffff, /* dst_mask */
1173 FALSE
), /* pcrel_offset */
1175 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1176 offset to the entry. */
1177 HOWTO (R_PPC_GOT_TPREL16
,
1179 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 FALSE
, /* pc_relative */
1183 complain_overflow_signed
, /* complain_on_overflow */
1184 ppc_elf_unhandled_reloc
, /* special_function */
1185 "R_PPC_GOT_TPREL16", /* name */
1186 FALSE
, /* partial_inplace */
1188 0xffff, /* dst_mask */
1189 FALSE
), /* pcrel_offset */
1191 /* Like GOT_TPREL16, but no overflow. */
1192 HOWTO (R_PPC_GOT_TPREL16_LO
,
1194 1, /* size (0 = byte, 1 = short, 2 = long) */
1196 FALSE
, /* pc_relative */
1198 complain_overflow_dont
, /* complain_on_overflow */
1199 ppc_elf_unhandled_reloc
, /* special_function */
1200 "R_PPC_GOT_TPREL16_LO", /* name */
1201 FALSE
, /* partial_inplace */
1203 0xffff, /* dst_mask */
1204 FALSE
), /* pcrel_offset */
1206 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1207 HOWTO (R_PPC_GOT_TPREL16_HI
,
1208 16, /* rightshift */
1209 1, /* size (0 = byte, 1 = short, 2 = long) */
1211 FALSE
, /* pc_relative */
1213 complain_overflow_dont
, /* complain_on_overflow */
1214 ppc_elf_unhandled_reloc
, /* special_function */
1215 "R_PPC_GOT_TPREL16_HI", /* name */
1216 FALSE
, /* partial_inplace */
1218 0xffff, /* dst_mask */
1219 FALSE
), /* pcrel_offset */
1221 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1222 HOWTO (R_PPC_GOT_TPREL16_HA
,
1223 16, /* rightshift */
1224 1, /* size (0 = byte, 1 = short, 2 = long) */
1226 FALSE
, /* pc_relative */
1228 complain_overflow_dont
, /* complain_on_overflow */
1229 ppc_elf_unhandled_reloc
, /* special_function */
1230 "R_PPC_GOT_TPREL16_HA", /* name */
1231 FALSE
, /* partial_inplace */
1233 0xffff, /* dst_mask */
1234 FALSE
), /* pcrel_offset */
1236 /* The remaining relocs are from the Embedded ELF ABI, and are not
1237 in the SVR4 ELF ABI. */
1239 /* 32 bit value resulting from the addend minus the symbol. */
1240 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 FALSE
, /* pc_relative */
1246 complain_overflow_dont
, /* complain_on_overflow */
1247 ppc_elf_unhandled_reloc
, /* special_function */
1248 "R_PPC_EMB_NADDR32", /* name */
1249 FALSE
, /* partial_inplace */
1251 0xffffffff, /* dst_mask */
1252 FALSE
), /* pcrel_offset */
1254 /* 16 bit value resulting from the addend minus the symbol. */
1255 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1257 1, /* size (0 = byte, 1 = short, 2 = long) */
1259 FALSE
, /* pc_relative */
1261 complain_overflow_signed
, /* complain_on_overflow */
1262 ppc_elf_unhandled_reloc
, /* special_function */
1263 "R_PPC_EMB_NADDR16", /* name */
1264 FALSE
, /* partial_inplace */
1266 0xffff, /* dst_mask */
1267 FALSE
), /* pcrel_offset */
1269 /* 16 bit value resulting from the addend minus the symbol. */
1270 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1272 1, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE
, /* pc_relative */
1276 complain_overflow_dont
,/* complain_on_overflow */
1277 ppc_elf_unhandled_reloc
, /* special_function */
1278 "R_PPC_EMB_ADDR16_LO", /* name */
1279 FALSE
, /* partial_inplace */
1281 0xffff, /* dst_mask */
1282 FALSE
), /* pcrel_offset */
1284 /* The high order 16 bits of the addend minus the symbol. */
1285 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1286 16, /* rightshift */
1287 1, /* size (0 = byte, 1 = short, 2 = long) */
1289 FALSE
, /* pc_relative */
1291 complain_overflow_dont
, /* complain_on_overflow */
1292 ppc_elf_unhandled_reloc
, /* special_function */
1293 "R_PPC_EMB_NADDR16_HI", /* name */
1294 FALSE
, /* partial_inplace */
1296 0xffff, /* dst_mask */
1297 FALSE
), /* pcrel_offset */
1299 /* The high order 16 bits of the result of the addend minus the address,
1300 plus 1 if the contents of the low 16 bits, treated as a signed number,
1302 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1303 16, /* rightshift */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 FALSE
, /* pc_relative */
1308 complain_overflow_dont
, /* complain_on_overflow */
1309 ppc_elf_unhandled_reloc
, /* special_function */
1310 "R_PPC_EMB_NADDR16_HA", /* name */
1311 FALSE
, /* partial_inplace */
1313 0xffff, /* dst_mask */
1314 FALSE
), /* pcrel_offset */
1316 /* 16 bit value resulting from allocating a 4 byte word to hold an
1317 address in the .sdata section, and returning the offset from
1318 _SDA_BASE_ for that relocation. */
1319 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1323 FALSE
, /* pc_relative */
1325 complain_overflow_signed
, /* complain_on_overflow */
1326 ppc_elf_unhandled_reloc
, /* special_function */
1327 "R_PPC_EMB_SDAI16", /* name */
1328 FALSE
, /* partial_inplace */
1330 0xffff, /* dst_mask */
1331 FALSE
), /* pcrel_offset */
1333 /* 16 bit value resulting from allocating a 4 byte word to hold an
1334 address in the .sdata2 section, and returning the offset from
1335 _SDA2_BASE_ for that relocation. */
1336 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1338 1, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE
, /* pc_relative */
1342 complain_overflow_signed
, /* complain_on_overflow */
1343 ppc_elf_unhandled_reloc
, /* special_function */
1344 "R_PPC_EMB_SDA2I16", /* name */
1345 FALSE
, /* partial_inplace */
1347 0xffff, /* dst_mask */
1348 FALSE
), /* pcrel_offset */
1350 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1351 small data items. */
1352 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE
, /* pc_relative */
1358 complain_overflow_signed
, /* complain_on_overflow */
1359 ppc_elf_unhandled_reloc
, /* special_function */
1360 "R_PPC_EMB_SDA2REL", /* name */
1361 FALSE
, /* partial_inplace */
1363 0xffff, /* dst_mask */
1364 FALSE
), /* pcrel_offset */
1366 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1367 signed offset from the appropriate base, and filling in the register
1368 field with the appropriate register (0, 2, or 13). */
1369 HOWTO (R_PPC_EMB_SDA21
, /* type */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_signed
, /* complain_on_overflow */
1376 ppc_elf_unhandled_reloc
, /* special_function */
1377 "R_PPC_EMB_SDA21", /* name */
1378 FALSE
, /* partial_inplace */
1380 0xffff, /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 /* Relocation not handled: R_PPC_EMB_MRKREF */
1384 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1385 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1386 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1387 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1388 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1390 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1391 in the 16 bit signed offset from the appropriate base, and filling in the
1392 register field with the appropriate register (0, 2, or 13). */
1393 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE
, /* pc_relative */
1399 complain_overflow_signed
, /* complain_on_overflow */
1400 ppc_elf_unhandled_reloc
, /* special_function */
1401 "R_PPC_EMB_RELSDA", /* name */
1402 FALSE
, /* partial_inplace */
1404 0xffff, /* dst_mask */
1405 FALSE
), /* pcrel_offset */
1407 /* A relative 8 bit branch. */
1408 HOWTO (R_PPC_VLE_REL8
, /* type */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 TRUE
, /* pc_relative */
1414 complain_overflow_signed
, /* complain_on_overflow */
1415 bfd_elf_generic_reloc
, /* special_function */
1416 "R_PPC_VLE_REL8", /* name */
1417 FALSE
, /* partial_inplace */
1419 0xff, /* dst_mask */
1420 TRUE
), /* pcrel_offset */
1422 /* A relative 15 bit branch. */
1423 HOWTO (R_PPC_VLE_REL15
, /* type */
1425 2, /* size (0 = byte, 1 = short, 2 = long) */
1427 TRUE
, /* pc_relative */
1429 complain_overflow_signed
, /* complain_on_overflow */
1430 bfd_elf_generic_reloc
, /* special_function */
1431 "R_PPC_VLE_REL15", /* name */
1432 FALSE
, /* partial_inplace */
1434 0xfffe, /* dst_mask */
1435 TRUE
), /* pcrel_offset */
1437 /* A relative 24 bit branch. */
1438 HOWTO (R_PPC_VLE_REL24
, /* type */
1440 2, /* size (0 = byte, 1 = short, 2 = long) */
1442 TRUE
, /* pc_relative */
1444 complain_overflow_signed
, /* complain_on_overflow */
1445 bfd_elf_generic_reloc
, /* special_function */
1446 "R_PPC_VLE_REL24", /* name */
1447 FALSE
, /* partial_inplace */
1449 0x1fffffe, /* dst_mask */
1450 TRUE
), /* pcrel_offset */
1452 /* The 16 LSBS in split16a format. */
1453 HOWTO (R_PPC_VLE_LO16A
, /* type */
1455 2, /* size (0 = byte, 1 = short, 2 = long) */
1457 FALSE
, /* pc_relative */
1459 complain_overflow_dont
, /* complain_on_overflow */
1460 ppc_elf_unhandled_reloc
, /* special_function */
1461 "R_PPC_VLE_LO16A", /* name */
1462 FALSE
, /* partial_inplace */
1464 0x1f07ff, /* dst_mask */
1465 FALSE
), /* pcrel_offset */
1467 /* The 16 LSBS in split16d format. */
1468 HOWTO (R_PPC_VLE_LO16D
, /* type */
1470 2, /* size (0 = byte, 1 = short, 2 = long) */
1472 FALSE
, /* pc_relative */
1474 complain_overflow_dont
, /* complain_on_overflow */
1475 ppc_elf_unhandled_reloc
, /* special_function */
1476 "R_PPC_VLE_LO16D", /* name */
1477 FALSE
, /* partial_inplace */
1479 0x3e007ff, /* dst_mask */
1480 FALSE
), /* pcrel_offset */
1482 /* Bits 16-31 split16a format. */
1483 HOWTO (R_PPC_VLE_HI16A
, /* type */
1484 16, /* rightshift */
1485 2, /* size (0 = byte, 1 = short, 2 = long) */
1487 FALSE
, /* pc_relative */
1489 complain_overflow_dont
, /* complain_on_overflow */
1490 ppc_elf_unhandled_reloc
, /* special_function */
1491 "R_PPC_VLE_HI16A", /* name */
1492 FALSE
, /* partial_inplace */
1494 0x1f07ff, /* dst_mask */
1495 FALSE
), /* pcrel_offset */
1497 /* Bits 16-31 split16d format. */
1498 HOWTO (R_PPC_VLE_HI16D
, /* type */
1499 16, /* rightshift */
1500 2, /* size (0 = byte, 1 = short, 2 = long) */
1502 FALSE
, /* pc_relative */
1504 complain_overflow_dont
, /* complain_on_overflow */
1505 ppc_elf_unhandled_reloc
, /* special_function */
1506 "R_PPC_VLE_HI16D", /* name */
1507 FALSE
, /* partial_inplace */
1509 0x3e007ff, /* dst_mask */
1510 FALSE
), /* pcrel_offset */
1512 /* Bits 16-31 (High Adjusted) in split16a format. */
1513 HOWTO (R_PPC_VLE_HA16A
, /* type */
1514 16, /* rightshift */
1515 2, /* size (0 = byte, 1 = short, 2 = long) */
1517 FALSE
, /* pc_relative */
1519 complain_overflow_dont
, /* complain_on_overflow */
1520 ppc_elf_unhandled_reloc
, /* special_function */
1521 "R_PPC_VLE_HA16A", /* name */
1522 FALSE
, /* partial_inplace */
1524 0x1f07ff, /* dst_mask */
1525 FALSE
), /* pcrel_offset */
1527 /* Bits 16-31 (High Adjusted) in split16d format. */
1528 HOWTO (R_PPC_VLE_HA16D
, /* type */
1529 16, /* rightshift */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1532 FALSE
, /* pc_relative */
1534 complain_overflow_dont
, /* complain_on_overflow */
1535 ppc_elf_unhandled_reloc
, /* special_function */
1536 "R_PPC_VLE_HA16D", /* name */
1537 FALSE
, /* partial_inplace */
1539 0x3e007ff, /* dst_mask */
1540 FALSE
), /* pcrel_offset */
1542 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1543 instructions. If the register base is 0 then the linker changes
1544 the e_add16i to an e_li instruction. */
1545 HOWTO (R_PPC_VLE_SDA21
, /* type */
1547 2, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE
, /* pc_relative */
1551 complain_overflow_signed
, /* complain_on_overflow */
1552 ppc_elf_unhandled_reloc
, /* special_function */
1553 "R_PPC_VLE_SDA21", /* name */
1554 FALSE
, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE
), /* pcrel_offset */
1559 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1560 HOWTO (R_PPC_VLE_SDA21_LO
, /* type */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE
, /* pc_relative */
1566 complain_overflow_dont
, /* complain_on_overflow */
1567 ppc_elf_unhandled_reloc
, /* special_function */
1568 "R_PPC_VLE_SDA21_LO", /* name */
1569 FALSE
, /* partial_inplace */
1571 0xffff, /* dst_mask */
1572 FALSE
), /* pcrel_offset */
1574 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1575 HOWTO (R_PPC_VLE_SDAREL_LO16A
,/* type */
1577 2, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE
, /* pc_relative */
1581 complain_overflow_dont
, /* complain_on_overflow */
1582 ppc_elf_unhandled_reloc
, /* special_function */
1583 "R_PPC_VLE_SDAREL_LO16A", /* name */
1584 FALSE
, /* partial_inplace */
1586 0x1f07ff, /* dst_mask */
1587 FALSE
), /* pcrel_offset */
1589 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1590 HOWTO (R_PPC_VLE_SDAREL_LO16D
, /* type */
1592 2, /* size (0 = byte, 1 = short, 2 = long) */
1594 FALSE
, /* pc_relative */
1596 complain_overflow_dont
, /* complain_on_overflow */
1597 ppc_elf_unhandled_reloc
, /* special_function */
1598 "R_PPC_VLE_SDAREL_LO16D", /* name */
1599 FALSE
, /* partial_inplace */
1601 0x3e007ff, /* dst_mask */
1602 FALSE
), /* pcrel_offset */
1604 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1605 HOWTO (R_PPC_VLE_SDAREL_HI16A
, /* type */
1606 16, /* rightshift */
1607 2, /* size (0 = byte, 1 = short, 2 = long) */
1609 FALSE
, /* pc_relative */
1611 complain_overflow_dont
, /* complain_on_overflow */
1612 ppc_elf_unhandled_reloc
, /* special_function */
1613 "R_PPC_VLE_SDAREL_HI16A", /* name */
1614 FALSE
, /* partial_inplace */
1616 0x1f07ff, /* dst_mask */
1617 FALSE
), /* pcrel_offset */
1619 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1620 HOWTO (R_PPC_VLE_SDAREL_HI16D
, /* type */
1621 16, /* rightshift */
1622 2, /* size (0 = byte, 1 = short, 2 = long) */
1624 FALSE
, /* pc_relative */
1626 complain_overflow_dont
, /* complain_on_overflow */
1627 ppc_elf_unhandled_reloc
, /* special_function */
1628 "R_PPC_VLE_SDAREL_HI16D", /* name */
1629 FALSE
, /* partial_inplace */
1631 0x3e007ff, /* dst_mask */
1632 FALSE
), /* pcrel_offset */
1634 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1635 HOWTO (R_PPC_VLE_SDAREL_HA16A
, /* type */
1636 16, /* rightshift */
1637 2, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE
, /* pc_relative */
1641 complain_overflow_dont
, /* complain_on_overflow */
1642 ppc_elf_unhandled_reloc
, /* special_function */
1643 "R_PPC_VLE_SDAREL_HA16A", /* name */
1644 FALSE
, /* partial_inplace */
1646 0x1f07ff, /* dst_mask */
1647 FALSE
), /* pcrel_offset */
1649 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1650 HOWTO (R_PPC_VLE_SDAREL_HA16D
, /* type */
1651 16, /* rightshift */
1652 2, /* size (0 = byte, 1 = short, 2 = long) */
1654 FALSE
, /* pc_relative */
1656 complain_overflow_dont
, /* complain_on_overflow */
1657 ppc_elf_unhandled_reloc
, /* special_function */
1658 "R_PPC_VLE_SDAREL_HA16D", /* name */
1659 FALSE
, /* partial_inplace */
1661 0x3e007ff, /* dst_mask */
1662 FALSE
), /* pcrel_offset */
1664 /* e_li split20 format. */
1665 HOWTO (R_PPC_VLE_ADDR20
, /* type */
1666 16, /* rightshift */
1667 2, /* size (0 = byte, 1 = short, 2 = long) */
1669 FALSE
, /* pc_relative */
1671 complain_overflow_dont
, /* complain_on_overflow */
1672 bfd_elf_generic_reloc
, /* special_function */
1673 "R_PPC_VLE_ADDR20", /* name */
1674 FALSE
, /* partial_inplace */
1676 0x1f07ff, /* dst_mask */
1677 FALSE
), /* pcrel_offset */
1679 HOWTO (R_PPC_IRELATIVE
, /* type */
1681 2, /* size (0 = byte, 1 = short, 2 = long) */
1683 FALSE
, /* pc_relative */
1685 complain_overflow_dont
, /* complain_on_overflow */
1686 ppc_elf_unhandled_reloc
, /* special_function */
1687 "R_PPC_IRELATIVE", /* name */
1688 FALSE
, /* partial_inplace */
1690 0xffffffff, /* dst_mask */
1691 FALSE
), /* pcrel_offset */
1693 /* A 16 bit relative relocation. */
1694 HOWTO (R_PPC_REL16
, /* type */
1696 1, /* size (0 = byte, 1 = short, 2 = long) */
1698 TRUE
, /* pc_relative */
1700 complain_overflow_signed
, /* complain_on_overflow */
1701 bfd_elf_generic_reloc
, /* special_function */
1702 "R_PPC_REL16", /* name */
1703 FALSE
, /* partial_inplace */
1705 0xffff, /* dst_mask */
1706 TRUE
), /* pcrel_offset */
1708 /* A 16 bit relative relocation without overflow. */
1709 HOWTO (R_PPC_REL16_LO
, /* type */
1711 1, /* size (0 = byte, 1 = short, 2 = long) */
1713 TRUE
, /* pc_relative */
1715 complain_overflow_dont
,/* complain_on_overflow */
1716 bfd_elf_generic_reloc
, /* special_function */
1717 "R_PPC_REL16_LO", /* name */
1718 FALSE
, /* partial_inplace */
1720 0xffff, /* dst_mask */
1721 TRUE
), /* pcrel_offset */
1723 /* The high order 16 bits of a relative address. */
1724 HOWTO (R_PPC_REL16_HI
, /* type */
1725 16, /* rightshift */
1726 1, /* size (0 = byte, 1 = short, 2 = long) */
1728 TRUE
, /* pc_relative */
1730 complain_overflow_dont
, /* complain_on_overflow */
1731 bfd_elf_generic_reloc
, /* special_function */
1732 "R_PPC_REL16_HI", /* name */
1733 FALSE
, /* partial_inplace */
1735 0xffff, /* dst_mask */
1736 TRUE
), /* pcrel_offset */
1738 /* The high order 16 bits of a relative address, plus 1 if the contents of
1739 the low 16 bits, treated as a signed number, is negative. */
1740 HOWTO (R_PPC_REL16_HA
, /* type */
1741 16, /* rightshift */
1742 1, /* size (0 = byte, 1 = short, 2 = long) */
1744 TRUE
, /* pc_relative */
1746 complain_overflow_dont
, /* complain_on_overflow */
1747 ppc_elf_addr16_ha_reloc
, /* special_function */
1748 "R_PPC_REL16_HA", /* name */
1749 FALSE
, /* partial_inplace */
1751 0xffff, /* dst_mask */
1752 TRUE
), /* pcrel_offset */
1754 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1755 HOWTO (R_PPC_REL16DX_HA
, /* type */
1756 16, /* rightshift */
1757 2, /* size (0 = byte, 1 = short, 2 = long) */
1759 TRUE
, /* pc_relative */
1761 complain_overflow_signed
, /* complain_on_overflow */
1762 ppc_elf_addr16_ha_reloc
, /* special_function */
1763 "R_PPC_REL16DX_HA", /* name */
1764 FALSE
, /* partial_inplace */
1766 0x1fffc1, /* dst_mask */
1767 TRUE
), /* pcrel_offset */
1769 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1770 HOWTO (R_PPC_16DX_HA
, /* type */
1771 16, /* rightshift */
1772 2, /* size (0 = byte, 1 = short, 2 = long) */
1774 FALSE
, /* pc_relative */
1776 complain_overflow_signed
, /* complain_on_overflow */
1777 ppc_elf_addr16_ha_reloc
, /* special_function */
1778 "R_PPC_16DX_HA", /* name */
1779 FALSE
, /* partial_inplace */
1781 0x1fffc1, /* dst_mask */
1782 FALSE
), /* pcrel_offset */
1784 /* GNU extension to record C++ vtable hierarchy. */
1785 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1787 0, /* size (0 = byte, 1 = short, 2 = long) */
1789 FALSE
, /* pc_relative */
1791 complain_overflow_dont
, /* complain_on_overflow */
1792 NULL
, /* special_function */
1793 "R_PPC_GNU_VTINHERIT", /* name */
1794 FALSE
, /* partial_inplace */
1797 FALSE
), /* pcrel_offset */
1799 /* GNU extension to record C++ vtable member usage. */
1800 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1802 0, /* size (0 = byte, 1 = short, 2 = long) */
1804 FALSE
, /* pc_relative */
1806 complain_overflow_dont
, /* complain_on_overflow */
1807 NULL
, /* special_function */
1808 "R_PPC_GNU_VTENTRY", /* name */
1809 FALSE
, /* partial_inplace */
1812 FALSE
), /* pcrel_offset */
1814 /* Phony reloc to handle AIX style TOC entries. */
1815 HOWTO (R_PPC_TOC16
, /* type */
1817 1, /* size (0 = byte, 1 = short, 2 = long) */
1819 FALSE
, /* pc_relative */
1821 complain_overflow_signed
, /* complain_on_overflow */
1822 ppc_elf_unhandled_reloc
, /* special_function */
1823 "R_PPC_TOC16", /* name */
1824 FALSE
, /* partial_inplace */
1826 0xffff, /* dst_mask */
1827 FALSE
), /* pcrel_offset */
1830 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1833 ppc_elf_howto_init (void)
1835 unsigned int i
, type
;
1838 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1841 type
= ppc_elf_howto_raw
[i
].type
;
1842 if (type
>= (sizeof (ppc_elf_howto_table
)
1843 / sizeof (ppc_elf_howto_table
[0])))
1845 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1849 static reloc_howto_type
*
1850 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1851 bfd_reloc_code_real_type code
)
1853 enum elf_ppc_reloc_type r
;
1855 /* Initialize howto table if not already done. */
1856 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1857 ppc_elf_howto_init ();
1864 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
1865 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
1866 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
1867 case BFD_RELOC_PPC64_ADDR16_DS
:
1868 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
1869 case BFD_RELOC_PPC64_ADDR16_LO_DS
:
1870 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
1871 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
1872 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
1873 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
1874 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
1875 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
1876 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
1877 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
1878 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
1879 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
1880 case BFD_RELOC_PPC64_GOT16_DS
:
1881 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
1882 case BFD_RELOC_PPC64_GOT16_LO_DS
:
1883 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
1884 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
1885 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
1886 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
1887 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
1888 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
1889 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
1890 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
1891 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
1892 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
1893 case BFD_RELOC_PPC64_PLT16_LO_DS
:
1894 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
1895 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
1896 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
1897 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
1898 case BFD_RELOC_PPC64_SECTOFF_DS
:
1899 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
1900 case BFD_RELOC_PPC64_SECTOFF_LO_DS
:
1901 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
1902 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
1903 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
1904 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
1905 case BFD_RELOC_PPC64_TOC16_DS
:
1906 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
1907 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
1908 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC_TLSGD
; break;
1909 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC_TLSLD
; break;
1910 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
1911 case BFD_RELOC_PPC64_TPREL16_DS
:
1912 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
1913 case BFD_RELOC_PPC64_TPREL16_LO_DS
:
1914 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
1915 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
1916 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
1917 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
1918 case BFD_RELOC_PPC64_DTPREL16_DS
:
1919 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
1920 case BFD_RELOC_PPC64_DTPREL16_LO_DS
:
1921 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
1922 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
1923 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
1924 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
1925 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
1926 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
1929 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
1930 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
1933 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
1934 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
1937 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
1938 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
1941 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
1942 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
1943 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
1946 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
1947 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
1948 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
1949 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
1950 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
1951 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
1952 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
1953 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
1954 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
1955 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
1956 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
1957 case BFD_RELOC_PPC_VLE_REL8
: r
= R_PPC_VLE_REL8
; break;
1958 case BFD_RELOC_PPC_VLE_REL15
: r
= R_PPC_VLE_REL15
; break;
1959 case BFD_RELOC_PPC_VLE_REL24
: r
= R_PPC_VLE_REL24
; break;
1960 case BFD_RELOC_PPC_VLE_LO16A
: r
= R_PPC_VLE_LO16A
; break;
1961 case BFD_RELOC_PPC_VLE_LO16D
: r
= R_PPC_VLE_LO16D
; break;
1962 case BFD_RELOC_PPC_VLE_HI16A
: r
= R_PPC_VLE_HI16A
; break;
1963 case BFD_RELOC_PPC_VLE_HI16D
: r
= R_PPC_VLE_HI16D
; break;
1964 case BFD_RELOC_PPC_VLE_HA16A
: r
= R_PPC_VLE_HA16A
; break;
1965 case BFD_RELOC_PPC_VLE_HA16D
: r
= R_PPC_VLE_HA16D
; break;
1966 case BFD_RELOC_PPC_VLE_SDA21
: r
= R_PPC_VLE_SDA21
; break;
1967 case BFD_RELOC_PPC_VLE_SDA21_LO
: r
= R_PPC_VLE_SDA21_LO
; break;
1968 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
1969 r
= R_PPC_VLE_SDAREL_LO16A
;
1971 case BFD_RELOC_PPC_VLE_SDAREL_LO16D
:
1972 r
= R_PPC_VLE_SDAREL_LO16D
;
1974 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
1975 r
= R_PPC_VLE_SDAREL_HI16A
;
1977 case BFD_RELOC_PPC_VLE_SDAREL_HI16D
:
1978 r
= R_PPC_VLE_SDAREL_HI16D
;
1980 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
1981 r
= R_PPC_VLE_SDAREL_HA16A
;
1983 case BFD_RELOC_PPC_VLE_SDAREL_HA16D
:
1984 r
= R_PPC_VLE_SDAREL_HA16D
;
1986 case BFD_RELOC_16_PCREL
: r
= R_PPC_REL16
; break;
1987 case BFD_RELOC_LO16_PCREL
: r
= R_PPC_REL16_LO
; break;
1988 case BFD_RELOC_HI16_PCREL
: r
= R_PPC_REL16_HI
; break;
1989 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC_REL16_HA
; break;
1990 case BFD_RELOC_PPC_16DX_HA
: r
= R_PPC_16DX_HA
; break;
1991 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC_REL16DX_HA
; break;
1992 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
1993 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
1996 return ppc_elf_howto_table
[r
];
1999 static reloc_howto_type
*
2000 ppc_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2006 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
2008 if (ppc_elf_howto_raw
[i
].name
!= NULL
2009 && strcasecmp (ppc_elf_howto_raw
[i
].name
, r_name
) == 0)
2010 return &ppc_elf_howto_raw
[i
];
2015 /* Set the howto pointer for a PowerPC ELF reloc. */
2018 ppc_elf_info_to_howto (bfd
*abfd
,
2020 Elf_Internal_Rela
*dst
)
2022 unsigned int r_type
;
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
2026 ppc_elf_howto_init ();
2028 r_type
= ELF32_R_TYPE (dst
->r_info
);
2029 if (r_type
>= R_PPC_max
)
2031 /* xgettext:c-format */
2032 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2034 bfd_set_error (bfd_error_bad_value
);
2038 cache_ptr
->howto
= ppc_elf_howto_table
[r_type
];
2040 /* Just because the above assert didn't trigger doesn't mean that
2041 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2042 if (cache_ptr
->howto
== NULL
)
2044 /* xgettext:c-format */
2045 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2047 bfd_set_error (bfd_error_bad_value
);
2055 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2057 static bfd_reloc_status_type
2058 ppc_elf_addr16_ha_reloc (bfd
*abfd
,
2059 arelent
*reloc_entry
,
2062 asection
*input_section
,
2064 char **error_message ATTRIBUTE_UNUSED
)
2066 enum elf_ppc_reloc_type r_type
;
2068 bfd_size_type octets
;
2071 if (output_bfd
!= NULL
)
2073 reloc_entry
->address
+= input_section
->output_offset
;
2074 return bfd_reloc_ok
;
2077 reloc_entry
->addend
+= 0x8000;
2078 r_type
= reloc_entry
->howto
->type
;
2079 if (r_type
!= R_PPC_REL16DX_HA
)
2080 return bfd_reloc_continue
;
2083 if (!bfd_is_com_section (symbol
->section
))
2084 value
= symbol
->value
;
2085 value
+= (reloc_entry
->addend
2086 + symbol
->section
->output_offset
2087 + symbol
->section
->output_section
->vma
);
2088 value
-= (reloc_entry
->address
2089 + input_section
->output_offset
2090 + input_section
->output_section
->vma
);
2093 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2094 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2096 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2097 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2098 return bfd_reloc_ok
;
2101 static bfd_reloc_status_type
2102 ppc_elf_unhandled_reloc (bfd
*abfd
,
2103 arelent
*reloc_entry
,
2106 asection
*input_section
,
2108 char **error_message
)
2110 /* If this is a relocatable link (output_bfd test tells us), just
2111 call the generic function. Any adjustment will be done at final
2113 if (output_bfd
!= NULL
)
2114 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2115 input_section
, output_bfd
, error_message
);
2117 if (error_message
!= NULL
)
2119 static char buf
[60];
2120 sprintf (buf
, _("generic linker can't handle %s"),
2121 reloc_entry
->howto
->name
);
2122 *error_message
= buf
;
2124 return bfd_reloc_dangerous
;
2127 /* Sections created by the linker. */
2129 typedef struct elf_linker_section
2131 /* Pointer to the bfd section. */
2135 /* Associated bss section name. */
2136 const char *bss_name
;
2137 /* Associated symbol name. */
2138 const char *sym_name
;
2139 /* Associated symbol. */
2140 struct elf_link_hash_entry
*sym
;
2141 } elf_linker_section_t
;
2143 /* Linked list of allocated pointer entries. This hangs off of the
2144 symbol lists, and provides allows us to return different pointers,
2145 based on different addend's. */
2147 typedef struct elf_linker_section_pointers
2149 /* next allocated pointer for this symbol */
2150 struct elf_linker_section_pointers
*next
;
2151 /* offset of pointer from beginning of section */
2155 /* which linker section this is */
2156 elf_linker_section_t
*lsect
;
2157 } elf_linker_section_pointers_t
;
2159 struct ppc_elf_obj_tdata
2161 struct elf_obj_tdata elf
;
2163 /* A mapping from local symbols to offsets into the various linker
2164 sections added. This is index by the symbol index. */
2165 elf_linker_section_pointers_t
**linker_section_pointers
;
2167 /* Flags used to auto-detect plt type. */
2168 unsigned int makes_plt_call
: 1;
2169 unsigned int has_rel16
: 1;
2172 #define ppc_elf_tdata(bfd) \
2173 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2175 #define elf_local_ptr_offsets(bfd) \
2176 (ppc_elf_tdata (bfd)->linker_section_pointers)
2178 #define is_ppc_elf(bfd) \
2179 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2180 && elf_object_id (bfd) == PPC32_ELF_DATA)
2182 /* Override the generic function because we store some extras. */
2185 ppc_elf_mkobject (bfd
*abfd
)
2187 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
2191 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2194 _bfd_elf_ppc_set_arch (bfd
*abfd
)
2196 unsigned long mach
= 0;
2198 unsigned char *contents
;
2200 if (abfd
->arch_info
->bits_per_word
== 32
2201 && bfd_big_endian (abfd
))
2204 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2205 if ((elf_section_data (s
)->this_hdr
.sh_flags
& SHF_PPC_VLE
) != 0)
2208 mach
= bfd_mach_ppc_vle
;
2213 s
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2214 if (s
!= NULL
&& bfd_malloc_and_get_section (abfd
, s
, &contents
))
2216 unsigned int apuinfo_size
= bfd_get_32 (abfd
, contents
+ 4);
2219 for (i
= 20; i
< apuinfo_size
+ 20 && i
+ 4 <= s
->size
; i
+= 4)
2221 unsigned int val
= bfd_get_32 (abfd
, contents
+ i
);
2224 case PPC_APUINFO_PMR
:
2225 case PPC_APUINFO_RFMCI
:
2227 mach
= bfd_mach_ppc_titan
;
2230 case PPC_APUINFO_ISEL
:
2231 case PPC_APUINFO_CACHELCK
:
2232 if (mach
== bfd_mach_ppc_titan
)
2233 mach
= bfd_mach_ppc_e500mc
;
2236 case PPC_APUINFO_SPE
:
2237 case PPC_APUINFO_EFS
:
2238 case PPC_APUINFO_BRLOCK
:
2239 if (mach
!= bfd_mach_ppc_vle
)
2240 mach
= bfd_mach_ppc_e500
;
2243 case PPC_APUINFO_VLE
:
2244 mach
= bfd_mach_ppc_vle
;
2255 if (mach
!= 0 && mach
!= -1ul)
2257 const bfd_arch_info_type
*arch
;
2259 for (arch
= abfd
->arch_info
->next
; arch
; arch
= arch
->next
)
2260 if (arch
->mach
== mach
)
2262 abfd
->arch_info
= arch
;
2269 /* Fix bad default arch selected for a 32 bit input bfd when the
2270 default is 64 bit. Also select arch based on apuinfo. */
2273 ppc_elf_object_p (bfd
*abfd
)
2275 if (!abfd
->arch_info
->the_default
)
2278 if (abfd
->arch_info
->bits_per_word
== 64)
2280 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2282 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
2284 /* Relies on arch after 64 bit default being 32 bit default. */
2285 abfd
->arch_info
= abfd
->arch_info
->next
;
2286 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
2289 return _bfd_elf_ppc_set_arch (abfd
);
2292 /* Function to set whether a module needs the -mrelocatable bit set. */
2295 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2297 BFD_ASSERT (!elf_flags_init (abfd
)
2298 || elf_elfheader (abfd
)->e_flags
== flags
);
2300 elf_elfheader (abfd
)->e_flags
= flags
;
2301 elf_flags_init (abfd
) = TRUE
;
2305 /* Support for core dump NOTE sections. */
2308 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2313 switch (note
->descsz
)
2318 case 268: /* Linux/PPC. */
2320 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2323 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
2332 /* Make a ".reg/999" section. */
2333 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2334 size
, note
->descpos
+ offset
);
2338 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2340 switch (note
->descsz
)
2345 case 128: /* Linux/PPC elf_prpsinfo. */
2346 elf_tdata (abfd
)->core
->pid
2347 = bfd_get_32 (abfd
, note
->descdata
+ 16);
2348 elf_tdata (abfd
)->core
->program
2349 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
2350 elf_tdata (abfd
)->core
->command
2351 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
2354 /* Note that for some reason, a spurious space is tacked
2355 onto the end of the args in some (at least one anyway)
2356 implementations, so strip it off if it exists. */
2359 char *command
= elf_tdata (abfd
)->core
->command
;
2360 int n
= strlen (command
);
2362 if (0 < n
&& command
[n
- 1] == ' ')
2363 command
[n
- 1] = '\0';
2370 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
2382 va_start (ap
, note_type
);
2383 memset (data
, 0, sizeof (data
));
2384 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
2385 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
2387 return elfcore_write_note (abfd
, buf
, bufsiz
,
2388 "CORE", note_type
, data
, sizeof (data
));
2399 va_start (ap
, note_type
);
2400 memset (data
, 0, 72);
2401 pid
= va_arg (ap
, long);
2402 bfd_put_32 (abfd
, pid
, data
+ 24);
2403 cursig
= va_arg (ap
, int);
2404 bfd_put_16 (abfd
, cursig
, data
+ 12);
2405 greg
= va_arg (ap
, const void *);
2406 memcpy (data
+ 72, greg
, 192);
2407 memset (data
+ 264, 0, 4);
2409 return elfcore_write_note (abfd
, buf
, bufsiz
,
2410 "CORE", note_type
, data
, sizeof (data
));
2416 ppc_elf_lookup_section_flags (char *flag_name
)
2419 if (!strcmp (flag_name
, "SHF_PPC_VLE"))
2425 /* Return address for Ith PLT stub in section PLT, for relocation REL
2426 or (bfd_vma) -1 if it should not be included. */
2429 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
2430 const asection
*plt ATTRIBUTE_UNUSED
,
2433 return rel
->address
;
2436 /* Handle a PowerPC specific section when reading an object file. This
2437 is called when bfd_section_from_shdr finds a section with an unknown
2441 ppc_elf_section_from_shdr (bfd
*abfd
,
2442 Elf_Internal_Shdr
*hdr
,
2449 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
2452 newsect
= hdr
->bfd_section
;
2453 flags
= bfd_get_section_flags (abfd
, newsect
);
2454 if (hdr
->sh_flags
& SHF_EXCLUDE
)
2455 flags
|= SEC_EXCLUDE
;
2457 if (hdr
->sh_type
== SHT_ORDERED
)
2458 flags
|= SEC_SORT_ENTRIES
;
2460 bfd_set_section_flags (abfd
, newsect
, flags
);
2464 /* Set up any other section flags and such that may be necessary. */
2467 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
2468 Elf_Internal_Shdr
*shdr
,
2471 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
2472 shdr
->sh_type
= SHT_ORDERED
;
2477 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2478 need to bump up the number of section headers. */
2481 ppc_elf_additional_program_headers (bfd
*abfd
,
2482 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2487 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2488 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2491 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2492 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2498 /* Modify the segment map for VLE executables. */
2501 ppc_elf_modify_segment_map (bfd
*abfd
,
2502 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2504 struct elf_segment_map
*m
;
2506 /* At this point in the link, output sections have already been sorted by
2507 LMA and assigned to segments. All that is left to do is to ensure
2508 there is no mixing of VLE & non-VLE sections in a text segment.
2509 If we find that case, we split the segment.
2510 We maintain the original output section order. */
2512 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
2514 struct elf_segment_map
*n
;
2517 unsigned int p_flags
;
2519 if (m
->p_type
!= PT_LOAD
|| m
->count
== 0)
2522 for (p_flags
= PF_R
, j
= 0; j
!= m
->count
; ++j
)
2524 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2526 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2529 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2530 p_flags
|= PF_PPC_VLE
;
2535 while (++j
!= m
->count
)
2537 unsigned int p_flags1
= PF_R
;
2539 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2541 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2544 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2545 p_flags1
|= PF_PPC_VLE
;
2546 if (((p_flags1
^ p_flags
) & PF_PPC_VLE
) != 0)
2549 p_flags
|= p_flags1
;
2551 /* If we're splitting a segment which originally contained rw
2552 sections then those sections might now only be in one of the
2553 two parts. So always set p_flags if splitting, even if we
2554 are being called for objcopy with p_flags_valid set. */
2555 if (j
!= m
->count
|| !m
->p_flags_valid
)
2557 m
->p_flags_valid
= 1;
2558 m
->p_flags
= p_flags
;
2563 /* Sections 0..j-1 stay in this (current) segment,
2564 the remainder are put in a new segment.
2565 The scan resumes with the new segment. */
2567 amt
= sizeof (struct elf_segment_map
);
2568 amt
+= (m
->count
- j
- 1) * sizeof (asection
*);
2569 n
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2573 n
->p_type
= PT_LOAD
;
2574 n
->count
= m
->count
- j
;
2575 for (k
= 0; k
< n
->count
; ++k
)
2576 n
->sections
[k
] = m
->sections
[j
+ k
];
2578 m
->p_size_valid
= 0;
2586 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2587 .PPC.EMB.sbss0 a normal section, and not a bss section so
2588 that the linker doesn't crater when trying to make more than
2591 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
2593 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
2594 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2595 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2596 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2597 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2598 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
2599 { STRING_COMMA_LEN (APUINFO_SECTION_NAME
), 0, SHT_NOTE
, 0 },
2600 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2601 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2602 { NULL
, 0, 0, 0, 0 }
2605 /* This is what we want for new plt/got. */
2606 static struct bfd_elf_special_section ppc_alt_plt
=
2607 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
2609 static const struct bfd_elf_special_section
*
2610 ppc_elf_get_sec_type_attr (bfd
*abfd
, asection
*sec
)
2612 const struct bfd_elf_special_section
*ssect
;
2614 /* See if this is one of the special sections. */
2615 if (sec
->name
== NULL
)
2618 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2622 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2623 ssect
= &ppc_alt_plt
;
2627 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2630 /* Very simple linked list structure for recording apuinfo values. */
2631 typedef struct apuinfo_list
2633 struct apuinfo_list
*next
;
2634 unsigned long value
;
2638 static apuinfo_list
*head
;
2639 static bfd_boolean apuinfo_set
;
2642 apuinfo_list_init (void)
2645 apuinfo_set
= FALSE
;
2649 apuinfo_list_add (unsigned long value
)
2651 apuinfo_list
*entry
= head
;
2653 while (entry
!= NULL
)
2655 if (entry
->value
== value
)
2657 entry
= entry
->next
;
2660 entry
= bfd_malloc (sizeof (* entry
));
2664 entry
->value
= value
;
2670 apuinfo_list_length (void)
2672 apuinfo_list
*entry
;
2673 unsigned long count
;
2675 for (entry
= head
, count
= 0;
2677 entry
= entry
->next
)
2683 static inline unsigned long
2684 apuinfo_list_element (unsigned long number
)
2686 apuinfo_list
* entry
;
2690 entry
= entry
->next
)
2693 return entry
? entry
->value
: 0;
2697 apuinfo_list_finish (void)
2699 apuinfo_list
*entry
;
2701 for (entry
= head
; entry
;)
2703 apuinfo_list
*next
= entry
->next
;
2711 /* Scan the input BFDs and create a linked list of
2712 the APUinfo values that will need to be emitted. */
2715 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2719 char *buffer
= NULL
;
2720 bfd_size_type largest_input_size
= 0;
2722 unsigned long length
;
2723 const char *error_message
= NULL
;
2725 if (link_info
== NULL
)
2728 apuinfo_list_init ();
2730 /* Read in the input sections contents. */
2731 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
2733 unsigned long datum
;
2735 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2739 /* xgettext:c-format */
2740 error_message
= _("corrupt %s section in %pB");
2741 length
= asec
->size
;
2746 if (largest_input_size
< asec
->size
)
2750 largest_input_size
= asec
->size
;
2751 buffer
= bfd_malloc (largest_input_size
);
2756 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2757 || (bfd_bread (buffer
, length
, ibfd
) != length
))
2759 /* xgettext:c-format */
2760 error_message
= _("unable to read in %s section from %pB");
2764 /* Verify the contents of the header. Note - we have to
2765 extract the values this way in order to allow for a
2766 host whose endian-ness is different from the target. */
2767 datum
= bfd_get_32 (ibfd
, buffer
);
2768 if (datum
!= sizeof APUINFO_LABEL
)
2771 datum
= bfd_get_32 (ibfd
, buffer
+ 8);
2775 if (strcmp (buffer
+ 12, APUINFO_LABEL
) != 0)
2778 /* Get the number of bytes used for apuinfo entries. */
2779 datum
= bfd_get_32 (ibfd
, buffer
+ 4);
2780 if (datum
+ 20 != length
)
2783 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2784 for (i
= 0; i
< datum
; i
+= 4)
2785 apuinfo_list_add (bfd_get_32 (ibfd
, buffer
+ 20 + i
));
2788 error_message
= NULL
;
2792 /* Compute the size of the output section. */
2793 unsigned num_entries
= apuinfo_list_length ();
2795 /* Set the output section size, if it exists. */
2796 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2798 if (asec
&& ! bfd_set_section_size (abfd
, asec
, 20 + num_entries
* 4))
2801 /* xgettext:c-format */
2802 error_message
= _("warning: unable to set size of %s section in %pB");
2811 _bfd_error_handler (error_message
, APUINFO_SECTION_NAME
, ibfd
);
2814 /* Prevent the output section from accumulating the input sections'
2815 contents. We have already stored this in our linked list structure. */
2818 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2819 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2821 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2823 return apuinfo_set
&& strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0;
2826 /* Finally we can generate the output section. */
2829 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2834 unsigned num_entries
;
2835 bfd_size_type length
;
2837 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2844 length
= asec
->size
;
2848 buffer
= bfd_malloc (length
);
2852 (_("failed to allocate space for new APUinfo section"));
2856 /* Create the apuinfo header. */
2857 num_entries
= apuinfo_list_length ();
2858 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2859 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2860 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2861 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2864 for (i
= 0; i
< num_entries
; i
++)
2866 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2870 if (length
!= asec
->size
)
2871 _bfd_error_handler (_("failed to compute new APUinfo section"));
2873 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2874 _bfd_error_handler (_("failed to install new APUinfo section"));
2878 apuinfo_list_finish ();
2882 is_nonpic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2884 bfd_byte buf
[4 * 4];
2886 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, sizeof buf
))
2889 return ((bfd_get_32 (abfd
, buf
+ 0) & 0xffff0000) == LIS_11
2890 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2891 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
2892 && bfd_get_32 (abfd
, buf
+ 12) == BCTR
);
2896 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2898 bfd_vma vma
= *(bfd_vma
*) ptr
;
2899 return ((section
->flags
& SEC_ALLOC
) != 0
2900 && section
->vma
<= vma
2901 && vma
< section
->vma
+ section
->size
);
2905 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2906 long dynsymcount
, asymbol
**dynsyms
,
2909 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2910 asection
*plt
, *relplt
, *dynamic
, *glink
;
2911 bfd_vma glink_vma
= 0;
2912 bfd_vma resolv_vma
= 0;
2916 long count
, i
, stub_delta
;
2923 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2926 if (dynsymcount
<= 0)
2929 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2933 plt
= bfd_get_section_by_name (abfd
, ".plt");
2937 /* Call common code to handle old-style executable PLTs. */
2938 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2939 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2940 dynsymcount
, dynsyms
, ret
);
2942 /* If this object was prelinked, the prelinker stored the address
2943 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2944 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2945 if (dynamic
!= NULL
)
2947 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2949 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2951 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2954 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2955 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2958 extdynend
= extdyn
+ dynamic
->size
;
2959 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2961 Elf_Internal_Dyn dyn
;
2962 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2964 if (dyn
.d_tag
== DT_NULL
)
2967 if (dyn
.d_tag
== DT_PPC_GOT
)
2969 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2970 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2972 && bfd_get_section_contents (abfd
, got
, buf
,
2973 g_o_t
- got
->vma
+ 4, 4))
2974 glink_vma
= bfd_get_32 (abfd
, buf
);
2981 /* Otherwise we read the first plt entry. */
2984 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
2985 glink_vma
= bfd_get_32 (abfd
, buf
);
2991 /* The .glink section usually does not survive the final
2992 link; search for the section (usually .text) where the
2993 glink stubs now reside. */
2994 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
2998 /* Determine glink PLT resolver by reading the relative branch
2999 from the first glink stub. */
3000 if (bfd_get_section_contents (abfd
, glink
, buf
,
3001 glink_vma
- glink
->vma
, 4))
3003 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3005 /* The first glink stub may either branch to the resolver ... */
3007 if ((insn
& ~0x3fffffc) == 0)
3008 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
3010 /* ... or fall through a bunch of NOPs. */
3011 else if ((insn
^ B
^ NOP
) == 0)
3013 bfd_get_section_contents (abfd
, glink
, buf
,
3014 glink_vma
- glink
->vma
+ i
, 4);
3016 if (bfd_get_32 (abfd
, buf
) != NOP
)
3018 resolv_vma
= glink_vma
+ i
;
3023 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
3024 /* If the stubs are those for -shared/-pie then we might have
3025 multiple stubs for each plt entry. If that is the case then
3026 there is no way to associate stubs with their plt entries short
3027 of figuring out the GOT pointer value used in the stub.
3028 The offsets tested here need to cover all possible values of
3029 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3030 stub_off
= glink_vma
- glink
->vma
;
3031 for (stub_delta
= 16; stub_delta
<= 32; stub_delta
+= 8)
3032 if (is_nonpic_glink_stub (abfd
, glink
, stub_off
- stub_delta
))
3034 if (stub_delta
> 32)
3037 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3038 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
3041 size
= count
* sizeof (asymbol
);
3042 p
= relplt
->relocation
;
3043 for (i
= 0; i
< count
; i
++, p
++)
3045 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3047 size
+= sizeof ("+0x") - 1 + 8;
3050 size
+= sizeof (asymbol
) + sizeof ("__glink");
3053 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3055 s
= *ret
= bfd_malloc (size
);
3059 stub_off
= glink_vma
- glink
->vma
;
3060 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
3061 p
= relplt
->relocation
+ count
- 1;
3062 for (i
= 0; i
< count
; i
++)
3066 stub_off
-= stub_delta
;
3067 if (strcmp ((*p
->sym_ptr_ptr
)->name
, "__tls_get_addr_opt") == 0)
3069 *s
= **p
->sym_ptr_ptr
;
3070 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3071 we are defining a symbol, ensure one of them is set. */
3072 if ((s
->flags
& BSF_LOCAL
) == 0)
3073 s
->flags
|= BSF_GLOBAL
;
3074 s
->flags
|= BSF_SYNTHETIC
;
3076 s
->value
= stub_off
;
3079 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3080 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3084 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3085 names
+= sizeof ("+0x") - 1;
3086 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3087 names
+= strlen (names
);
3089 memcpy (names
, "@plt", sizeof ("@plt"));
3090 names
+= sizeof ("@plt");
3095 /* Add a symbol at the start of the glink branch table. */
3096 memset (s
, 0, sizeof *s
);
3098 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3100 s
->value
= glink_vma
- glink
->vma
;
3102 memcpy (names
, "__glink", sizeof ("__glink"));
3103 names
+= sizeof ("__glink");
3109 /* Add a symbol for the glink PLT resolver. */
3110 memset (s
, 0, sizeof *s
);
3112 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3114 s
->value
= resolv_vma
- glink
->vma
;
3116 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3117 names
+= sizeof ("__glink_PLTresolve");
3125 /* The following functions are specific to the ELF linker, while
3126 functions above are used generally. They appear in this file more
3127 or less in the order in which they are called. eg.
3128 ppc_elf_check_relocs is called early in the link process,
3129 ppc_elf_finish_dynamic_sections is one of the last functions
3132 /* Track PLT entries needed for a given symbol. We might need more
3133 than one glink entry per symbol when generating a pic binary. */
3136 struct plt_entry
*next
;
3138 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3139 This field stores the offset into .got2 used to initialise the
3140 GOT pointer reg. It will always be at least 32768. (Current
3141 gcc always uses an offset of 32768, but ld -r will pack .got2
3142 sections together resulting in larger offsets). */
3145 /* The .got2 section. */
3148 /* PLT refcount or offset. */
3151 bfd_signed_vma refcount
;
3155 /* .glink stub offset. */
3156 bfd_vma glink_offset
;
3159 /* Of those relocs that might be copied as dynamic relocs, this
3160 function selects those that must be copied when linking a shared
3161 library or PIE, even when the symbol is local. */
3164 must_be_dyn_reloc (struct bfd_link_info
*info
,
3165 enum elf_ppc_reloc_type r_type
)
3170 /* Only relative relocs can be resolved when the object load
3171 address isn't fixed. DTPREL32 is excluded because the
3172 dynamic linker needs to differentiate global dynamic from
3173 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3178 case R_PPC_REL14_BRTAKEN
:
3179 case R_PPC_REL14_BRNTAKEN
:
3185 case R_PPC_TPREL16_LO
:
3186 case R_PPC_TPREL16_HI
:
3187 case R_PPC_TPREL16_HA
:
3188 /* These relocations are relative but in a shared library the
3189 linker doesn't know the thread pointer base. */
3190 return bfd_link_dll (info
);
3194 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3195 copying dynamic variables from a shared lib into an app's dynbss
3196 section, and instead use a dynamic relocation to point into the
3198 #define ELIMINATE_COPY_RELOCS 1
3200 /* Used to track dynamic relocations for local symbols. */
3201 struct ppc_dyn_relocs
3203 struct ppc_dyn_relocs
*next
;
3205 /* The input section of the reloc. */
3208 /* Total number of relocs copied for the input section. */
3209 unsigned int count
: 31;
3211 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3212 unsigned int ifunc
: 1;
3215 /* PPC ELF linker hash entry. */
3217 struct ppc_elf_link_hash_entry
3219 struct elf_link_hash_entry elf
;
3221 /* If this symbol is used in the linker created sections, the processor
3222 specific backend uses this field to map the field into the offset
3223 from the beginning of the section. */
3224 elf_linker_section_pointers_t
*linker_section_pointer
;
3226 /* Track dynamic relocs copied for this symbol. */
3227 struct elf_dyn_relocs
*dyn_relocs
;
3229 /* Contexts in which symbol is used in the GOT (or TOC).
3230 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3231 corresponding relocs are encountered during check_relocs.
3232 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3233 indicate the corresponding GOT entry type is not needed. */
3234 #define TLS_GD 1 /* GD reloc. */
3235 #define TLS_LD 2 /* LD reloc. */
3236 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3237 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3238 #define TLS_TLS 16 /* Any TLS reloc. */
3239 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3240 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3241 unsigned char tls_mask
;
3243 /* Nonzero if we have seen a small data relocation referring to this
3245 unsigned char has_sda_refs
: 1;
3247 /* Flag use of given relocations. */
3248 unsigned char has_addr16_ha
: 1;
3249 unsigned char has_addr16_lo
: 1;
3252 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3254 /* PPC ELF linker hash table. */
3256 struct ppc_elf_link_hash_table
3258 struct elf_link_hash_table elf
;
3260 /* Various options passed from the linker. */
3261 struct ppc_elf_params
*params
;
3263 /* Short-cuts to get to dynamic linker sections. */
3267 elf_linker_section_t sdata
[2];
3269 asection
*glink_eh_frame
;
3271 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3274 /* Shortcut to __tls_get_addr. */
3275 struct elf_link_hash_entry
*tls_get_addr
;
3277 /* The bfd that forced an old-style PLT. */
3280 /* TLS local dynamic got entry handling. */
3282 bfd_signed_vma refcount
;
3286 /* Offset of branch table to PltResolve function in glink. */
3287 bfd_vma glink_pltresolve
;
3289 /* Size of reserved GOT entries. */
3290 unsigned int got_header_size
;
3291 /* Non-zero if allocating the header left a gap. */
3292 unsigned int got_gap
;
3294 /* The type of PLT we have chosen to use. */
3295 enum ppc_elf_plt_type plt_type
;
3297 /* True if the target system is VxWorks. */
3298 unsigned int is_vxworks
:1;
3300 /* Whether there exist local gnu indirect function resolvers,
3301 referenced by dynamic relocations. */
3302 unsigned int local_ifunc_resolver
:1;
3303 unsigned int maybe_local_ifunc_resolver
:1;
3305 /* Set if tls optimization is enabled. */
3306 unsigned int do_tls_opt
:1;
3308 /* The size of PLT entries. */
3310 /* The distance between adjacent PLT slots. */
3312 /* The size of the first PLT entry. */
3313 int plt_initial_entry_size
;
3315 /* Small local sym cache. */
3316 struct sym_cache sym_cache
;
3319 /* Rename some of the generic section flags to better document how they
3320 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3322 /* Nonzero if this section has TLS related relocations. */
3323 #define has_tls_reloc sec_flg0
3325 /* Nonzero if this section has a call to __tls_get_addr. */
3326 #define has_tls_get_addr_call sec_flg1
3328 /* Get the PPC ELF linker hash table from a link_info structure. */
3330 #define ppc_elf_hash_table(p) \
3331 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3332 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3334 /* Create an entry in a PPC ELF linker hash table. */
3336 static struct bfd_hash_entry
*
3337 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3338 struct bfd_hash_table
*table
,
3341 /* Allocate the structure if it has not already been allocated by a
3345 entry
= bfd_hash_allocate (table
,
3346 sizeof (struct ppc_elf_link_hash_entry
));
3351 /* Call the allocation method of the superclass. */
3352 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3355 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
3356 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
3357 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
3358 ppc_elf_hash_entry (entry
)->has_sda_refs
= 0;
3364 /* Create a PPC ELF linker hash table. */
3366 static struct bfd_link_hash_table
*
3367 ppc_elf_link_hash_table_create (bfd
*abfd
)
3369 struct ppc_elf_link_hash_table
*ret
;
3370 static struct ppc_elf_params default_params
3371 = { PLT_OLD
, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
3373 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
3377 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
3378 ppc_elf_link_hash_newfunc
,
3379 sizeof (struct ppc_elf_link_hash_entry
),
3386 ret
->elf
.init_plt_refcount
.refcount
= 0;
3387 ret
->elf
.init_plt_refcount
.glist
= NULL
;
3388 ret
->elf
.init_plt_offset
.offset
= 0;
3389 ret
->elf
.init_plt_offset
.glist
= NULL
;
3391 ret
->params
= &default_params
;
3393 ret
->sdata
[0].name
= ".sdata";
3394 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
3395 ret
->sdata
[0].bss_name
= ".sbss";
3397 ret
->sdata
[1].name
= ".sdata2";
3398 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
3399 ret
->sdata
[1].bss_name
= ".sbss2";
3401 ret
->plt_entry_size
= 12;
3402 ret
->plt_slot_size
= 8;
3403 ret
->plt_initial_entry_size
= 72;
3405 return &ret
->elf
.root
;
3408 /* Hook linker params into hash table. */
3411 ppc_elf_link_params (struct bfd_link_info
*info
, struct ppc_elf_params
*params
)
3413 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3416 htab
->params
= params
;
3417 params
->pagesize_p2
= bfd_log2 (params
->pagesize
);
3420 /* Create .got and the related sections. */
3423 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
3425 struct ppc_elf_link_hash_table
*htab
;
3427 if (!_bfd_elf_create_got_section (abfd
, info
))
3430 htab
= ppc_elf_hash_table (info
);
3431 if (!htab
->is_vxworks
)
3433 /* The powerpc .got has a blrl instruction in it. Mark it
3435 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
3436 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3437 if (!bfd_set_section_flags (abfd
, htab
->elf
.sgot
, flags
))
3444 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3445 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3446 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3449 ppc_elf_create_linker_section (bfd
*abfd
,
3450 struct bfd_link_info
*info
,
3452 elf_linker_section_t
*lsect
)
3456 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3457 | SEC_LINKER_CREATED
);
3459 s
= bfd_make_section_anyway_with_flags (abfd
, lsect
->name
, flags
);
3464 /* Define the sym on the first section of this name. */
3465 s
= bfd_get_section_by_name (abfd
, lsect
->name
);
3467 lsect
->sym
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, lsect
->sym_name
);
3468 if (lsect
->sym
== NULL
)
3470 lsect
->sym
->root
.u
.def
.value
= 0x8000;
3475 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
3477 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3482 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
3483 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3484 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
3486 p2align
= htab
->params
->ppc476_workaround
? 6 : 4;
3487 if (p2align
< htab
->params
->plt_stub_align
)
3488 p2align
= htab
->params
->plt_stub_align
;
3490 || !bfd_set_section_alignment (abfd
, s
, p2align
))
3493 if (!info
->no_ld_generated_unwind_info
)
3495 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3497 s
= bfd_make_section_anyway_with_flags (abfd
, ".eh_frame", flags
);
3498 htab
->glink_eh_frame
= s
;
3500 || !bfd_set_section_alignment (abfd
, s
, 2))
3504 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
3505 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
3508 || !bfd_set_section_alignment (abfd
, s
, 4))
3511 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3512 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3513 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.iplt", flags
);
3514 htab
->elf
.irelplt
= s
;
3516 || ! bfd_set_section_alignment (abfd
, s
, 2))
3519 if (!ppc_elf_create_linker_section (abfd
, info
, 0,
3523 if (!ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3530 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3531 to output sections (just like _bfd_elf_create_dynamic_sections has
3532 to create .dynbss and .rela.bss). */
3535 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3537 struct ppc_elf_link_hash_table
*htab
;
3541 htab
= ppc_elf_hash_table (info
);
3543 if (htab
->elf
.sgot
== NULL
3544 && !ppc_elf_create_got (abfd
, info
))
3547 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
3550 if (htab
->glink
== NULL
3551 && !ppc_elf_create_glink (abfd
, info
))
3554 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynsbss",
3555 SEC_ALLOC
| SEC_LINKER_CREATED
);
3560 if (! bfd_link_pic (info
))
3562 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3563 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3564 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.sbss", flags
);
3567 || ! bfd_set_section_alignment (abfd
, s
, 2))
3571 if (htab
->is_vxworks
3572 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
3576 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
3577 if (htab
->plt_type
== PLT_VXWORKS
)
3578 /* The VxWorks PLT is a loaded section with contents. */
3579 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3580 return bfd_set_section_flags (abfd
, s
, flags
);
3583 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3586 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3587 struct elf_link_hash_entry
*dir
,
3588 struct elf_link_hash_entry
*ind
)
3590 struct ppc_elf_link_hash_entry
*edir
, *eind
;
3592 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
3593 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
3595 edir
->tls_mask
|= eind
->tls_mask
;
3596 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3598 if (edir
->elf
.versioned
!= versioned_hidden
)
3599 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3600 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3601 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3602 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3603 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3604 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3606 /* If we were called to copy over info for a weak sym, that's all. */
3607 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3610 if (eind
->dyn_relocs
!= NULL
)
3612 if (edir
->dyn_relocs
!= NULL
)
3614 struct elf_dyn_relocs
**pp
;
3615 struct elf_dyn_relocs
*p
;
3617 /* Add reloc counts against the indirect sym to the direct sym
3618 list. Merge any entries against the same section. */
3619 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3621 struct elf_dyn_relocs
*q
;
3623 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3624 if (q
->sec
== p
->sec
)
3626 q
->pc_count
+= p
->pc_count
;
3627 q
->count
+= p
->count
;
3634 *pp
= edir
->dyn_relocs
;
3637 edir
->dyn_relocs
= eind
->dyn_relocs
;
3638 eind
->dyn_relocs
= NULL
;
3641 /* Copy over the GOT refcount entries that we may have already seen to
3642 the symbol which just became indirect. */
3643 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3644 eind
->elf
.got
.refcount
= 0;
3646 /* And plt entries. */
3647 if (eind
->elf
.plt
.plist
!= NULL
)
3649 if (edir
->elf
.plt
.plist
!= NULL
)
3651 struct plt_entry
**entp
;
3652 struct plt_entry
*ent
;
3654 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3656 struct plt_entry
*dent
;
3658 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3659 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3661 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3668 *entp
= edir
->elf
.plt
.plist
;
3671 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3672 eind
->elf
.plt
.plist
= NULL
;
3675 if (eind
->elf
.dynindx
!= -1)
3677 if (edir
->elf
.dynindx
!= -1)
3678 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3679 edir
->elf
.dynstr_index
);
3680 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3681 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3682 eind
->elf
.dynindx
= -1;
3683 eind
->elf
.dynstr_index
= 0;
3687 /* Hook called by the linker routine which adds symbols from an object
3688 file. We use it to put .comm items in .sbss, and not .bss. */
3691 ppc_elf_add_symbol_hook (bfd
*abfd
,
3692 struct bfd_link_info
*info
,
3693 Elf_Internal_Sym
*sym
,
3694 const char **namep ATTRIBUTE_UNUSED
,
3695 flagword
*flagsp ATTRIBUTE_UNUSED
,
3699 if (sym
->st_shndx
== SHN_COMMON
3700 && !bfd_link_relocatable (info
)
3701 && is_ppc_elf (info
->output_bfd
)
3702 && sym
->st_size
<= elf_gp_size (abfd
))
3704 /* Common symbols less than or equal to -G nn bytes are automatically
3706 struct ppc_elf_link_hash_table
*htab
;
3708 htab
= ppc_elf_hash_table (info
);
3709 if (htab
->sbss
== NULL
)
3711 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3713 if (!htab
->elf
.dynobj
)
3714 htab
->elf
.dynobj
= abfd
;
3716 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3719 if (htab
->sbss
== NULL
)
3724 *valp
= sym
->st_size
;
3727 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3728 && (abfd
->flags
& DYNAMIC
) == 0
3729 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
3730 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
3735 /* Find a linker generated pointer with a given addend and type. */
3737 static elf_linker_section_pointers_t
*
3738 elf_find_pointer_linker_section
3739 (elf_linker_section_pointers_t
*linker_pointers
,
3741 elf_linker_section_t
*lsect
)
3743 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3744 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3745 return linker_pointers
;
3750 /* Allocate a pointer to live in a linker created section. */
3753 elf_allocate_pointer_linker_section (bfd
*abfd
,
3754 elf_linker_section_t
*lsect
,
3755 struct elf_link_hash_entry
*h
,
3756 const Elf_Internal_Rela
*rel
)
3758 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3759 elf_linker_section_pointers_t
*linker_section_ptr
;
3760 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3763 BFD_ASSERT (lsect
!= NULL
);
3765 /* Is this a global symbol? */
3768 struct ppc_elf_link_hash_entry
*eh
;
3770 /* Has this symbol already been allocated? If so, our work is done. */
3771 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3772 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3777 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3781 BFD_ASSERT (is_ppc_elf (abfd
));
3783 /* Allocation of a pointer to a local symbol. */
3784 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3786 /* Allocate a table to hold the local symbols if first time. */
3789 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3792 amt
*= sizeof (elf_linker_section_pointers_t
*);
3793 ptr
= bfd_zalloc (abfd
, amt
);
3798 elf_local_ptr_offsets (abfd
) = ptr
;
3801 /* Has this symbol already been allocated? If so, our work is done. */
3802 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3807 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3810 /* Allocate space for a pointer in the linker section, and allocate
3811 a new pointer record from internal memory. */
3812 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3813 amt
= sizeof (elf_linker_section_pointers_t
);
3814 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3816 if (!linker_section_ptr
)
3819 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3820 linker_section_ptr
->addend
= rel
->r_addend
;
3821 linker_section_ptr
->lsect
= lsect
;
3822 *ptr_linker_section_ptr
= linker_section_ptr
;
3824 if (!bfd_set_section_alignment (lsect
->section
->owner
, lsect
->section
, 2))
3826 linker_section_ptr
->offset
= lsect
->section
->size
;
3827 lsect
->section
->size
+= 4;
3831 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3832 lsect
->name
, (long) linker_section_ptr
->offset
,
3833 (long) lsect
->section
->size
);
3839 static struct plt_entry
**
3840 update_local_sym_info (bfd
*abfd
,
3841 Elf_Internal_Shdr
*symtab_hdr
,
3842 unsigned long r_symndx
,
3845 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3846 struct plt_entry
**local_plt
;
3847 unsigned char *local_got_tls_masks
;
3849 if (local_got_refcounts
== NULL
)
3851 bfd_size_type size
= symtab_hdr
->sh_info
;
3853 size
*= (sizeof (*local_got_refcounts
)
3854 + sizeof (*local_plt
)
3855 + sizeof (*local_got_tls_masks
));
3856 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3857 if (local_got_refcounts
== NULL
)
3859 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3862 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3863 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
3864 local_got_tls_masks
[r_symndx
] |= tls_type
;
3865 if (tls_type
!= PLT_IFUNC
)
3866 local_got_refcounts
[r_symndx
] += 1;
3867 return local_plt
+ r_symndx
;
3871 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3872 asection
*sec
, bfd_vma addend
)
3874 struct plt_entry
*ent
;
3878 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3879 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3883 bfd_size_type amt
= sizeof (*ent
);
3884 ent
= bfd_alloc (abfd
, amt
);
3889 ent
->addend
= addend
;
3890 ent
->plt
.refcount
= 0;
3893 ent
->plt
.refcount
+= 1;
3897 static struct plt_entry
*
3898 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3900 struct plt_entry
*ent
;
3904 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3905 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3911 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3913 return (r_type
== R_PPC_PLTREL24
3914 || r_type
== R_PPC_LOCAL24PC
3915 || r_type
== R_PPC_REL24
3916 || r_type
== R_PPC_REL14
3917 || r_type
== R_PPC_REL14_BRTAKEN
3918 || r_type
== R_PPC_REL14_BRNTAKEN
3919 || r_type
== R_PPC_ADDR24
3920 || r_type
== R_PPC_ADDR14
3921 || r_type
== R_PPC_ADDR14_BRTAKEN
3922 || r_type
== R_PPC_ADDR14_BRNTAKEN
3923 || r_type
== R_PPC_VLE_REL24
);
3927 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3930 /* xgettext:c-format */
3931 (_("%pB: relocation %s cannot be used when making a shared object"),
3933 ppc_elf_howto_table
[r_type
]->name
);
3934 bfd_set_error (bfd_error_bad_value
);
3937 /* Look through the relocs for a section during the first phase, and
3938 allocate space in the global offset table or procedure linkage
3942 ppc_elf_check_relocs (bfd
*abfd
,
3943 struct bfd_link_info
*info
,
3945 const Elf_Internal_Rela
*relocs
)
3947 struct ppc_elf_link_hash_table
*htab
;
3948 Elf_Internal_Shdr
*symtab_hdr
;
3949 struct elf_link_hash_entry
**sym_hashes
;
3950 const Elf_Internal_Rela
*rel
;
3951 const Elf_Internal_Rela
*rel_end
;
3952 asection
*got2
, *sreloc
;
3953 struct elf_link_hash_entry
*tga
;
3955 if (bfd_link_relocatable (info
))
3958 /* Don't do anything special with non-loaded, non-alloced sections.
3959 In particular, any relocs in such sections should not affect GOT
3960 and PLT reference counting (ie. we don't allow them to create GOT
3961 or PLT entries), there's no possibility or desire to optimize TLS
3962 relocs, and there's not much point in propagating relocs to shared
3963 libs that the dynamic linker won't relocate. */
3964 if ((sec
->flags
& SEC_ALLOC
) == 0)
3968 _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
3972 BFD_ASSERT (is_ppc_elf (abfd
));
3974 /* Initialize howto table if not already done. */
3975 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3976 ppc_elf_howto_init ();
3978 htab
= ppc_elf_hash_table (info
);
3979 if (htab
->glink
== NULL
)
3981 if (htab
->elf
.dynobj
== NULL
)
3982 htab
->elf
.dynobj
= abfd
;
3983 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
3986 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3987 FALSE
, FALSE
, TRUE
);
3988 symtab_hdr
= &elf_symtab_hdr (abfd
);
3989 sym_hashes
= elf_sym_hashes (abfd
);
3990 got2
= bfd_get_section_by_name (abfd
, ".got2");
3993 rel_end
= relocs
+ sec
->reloc_count
;
3994 for (rel
= relocs
; rel
< rel_end
; rel
++)
3996 unsigned long r_symndx
;
3997 enum elf_ppc_reloc_type r_type
;
3998 struct elf_link_hash_entry
*h
;
4000 struct plt_entry
**ifunc
;
4002 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4003 if (r_symndx
< symtab_hdr
->sh_info
)
4007 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4008 while (h
->root
.type
== bfd_link_hash_indirect
4009 || h
->root
.type
== bfd_link_hash_warning
)
4010 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4013 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4014 This shows up in particular in an R_PPC_ADDR32 in the eabi
4017 && htab
->elf
.sgot
== NULL
4018 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
4020 if (htab
->elf
.dynobj
== NULL
)
4021 htab
->elf
.dynobj
= abfd
;
4022 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4024 BFD_ASSERT (h
== htab
->elf
.hgot
);
4028 r_type
= ELF32_R_TYPE (rel
->r_info
);
4030 if (h
== NULL
&& !htab
->is_vxworks
)
4032 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4037 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4039 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4040 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4045 /* STT_GNU_IFUNC symbols must have a PLT entry;
4046 In a non-pie executable even when there are
4048 if (!bfd_link_pic (info
)
4049 || is_branch_reloc (r_type
))
4052 if (r_type
== R_PPC_PLTREL24
)
4054 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4055 if (bfd_link_pic (info
))
4056 addend
= rel
->r_addend
;
4058 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
4064 if (!htab
->is_vxworks
4065 && is_branch_reloc (r_type
)
4070 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
4071 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
4072 /* We have a new-style __tls_get_addr call with a marker
4076 /* Mark this section as having an old-style call. */
4077 sec
->has_tls_get_addr_call
= 1;
4084 /* These special tls relocs tie a call to __tls_get_addr with
4085 its parameter symbol. */
4088 case R_PPC_GOT_TLSLD16
:
4089 case R_PPC_GOT_TLSLD16_LO
:
4090 case R_PPC_GOT_TLSLD16_HI
:
4091 case R_PPC_GOT_TLSLD16_HA
:
4092 tls_type
= TLS_TLS
| TLS_LD
;
4095 case R_PPC_GOT_TLSGD16
:
4096 case R_PPC_GOT_TLSGD16_LO
:
4097 case R_PPC_GOT_TLSGD16_HI
:
4098 case R_PPC_GOT_TLSGD16_HA
:
4099 tls_type
= TLS_TLS
| TLS_GD
;
4102 case R_PPC_GOT_TPREL16
:
4103 case R_PPC_GOT_TPREL16_LO
:
4104 case R_PPC_GOT_TPREL16_HI
:
4105 case R_PPC_GOT_TPREL16_HA
:
4106 if (bfd_link_dll (info
))
4107 info
->flags
|= DF_STATIC_TLS
;
4108 tls_type
= TLS_TLS
| TLS_TPREL
;
4111 case R_PPC_GOT_DTPREL16
:
4112 case R_PPC_GOT_DTPREL16_LO
:
4113 case R_PPC_GOT_DTPREL16_HI
:
4114 case R_PPC_GOT_DTPREL16_HA
:
4115 tls_type
= TLS_TLS
| TLS_DTPREL
;
4117 sec
->has_tls_reloc
= 1;
4120 /* GOT16 relocations */
4122 case R_PPC_GOT16_LO
:
4123 case R_PPC_GOT16_HI
:
4124 case R_PPC_GOT16_HA
:
4125 /* This symbol requires a global offset table entry. */
4126 if (htab
->elf
.sgot
== NULL
)
4128 if (htab
->elf
.dynobj
== NULL
)
4129 htab
->elf
.dynobj
= abfd
;
4130 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4135 h
->got
.refcount
+= 1;
4136 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4139 /* This is a global offset table entry for a local symbol. */
4140 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4143 /* We may also need a plt entry if the symbol turns out to be
4145 if (h
!= NULL
&& !bfd_link_pic (info
))
4147 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4152 /* Indirect .sdata relocation. */
4153 case R_PPC_EMB_SDAI16
:
4154 if (bfd_link_pic (info
))
4156 bad_shared_reloc (abfd
, r_type
);
4159 htab
->sdata
[0].sym
->ref_regular
= 1;
4160 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[0],
4165 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4166 h
->non_got_ref
= TRUE
;
4170 /* Indirect .sdata2 relocation. */
4171 case R_PPC_EMB_SDA2I16
:
4172 if (bfd_link_pic (info
))
4174 bad_shared_reloc (abfd
, r_type
);
4177 htab
->sdata
[1].sym
->ref_regular
= 1;
4178 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[1],
4183 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4184 h
->non_got_ref
= TRUE
;
4188 case R_PPC_SDAREL16
:
4189 htab
->sdata
[0].sym
->ref_regular
= 1;
4192 case R_PPC_VLE_SDAREL_LO16A
:
4193 case R_PPC_VLE_SDAREL_LO16D
:
4194 case R_PPC_VLE_SDAREL_HI16A
:
4195 case R_PPC_VLE_SDAREL_HI16D
:
4196 case R_PPC_VLE_SDAREL_HA16A
:
4197 case R_PPC_VLE_SDAREL_HA16D
:
4200 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4201 h
->non_got_ref
= TRUE
;
4205 case R_PPC_VLE_REL8
:
4206 case R_PPC_VLE_REL15
:
4207 case R_PPC_VLE_REL24
:
4208 case R_PPC_VLE_LO16A
:
4209 case R_PPC_VLE_LO16D
:
4210 case R_PPC_VLE_HI16A
:
4211 case R_PPC_VLE_HI16D
:
4212 case R_PPC_VLE_HA16A
:
4213 case R_PPC_VLE_HA16D
:
4214 case R_PPC_VLE_ADDR20
:
4217 case R_PPC_EMB_SDA2REL
:
4218 if (bfd_link_pic (info
))
4220 bad_shared_reloc (abfd
, r_type
);
4223 htab
->sdata
[1].sym
->ref_regular
= 1;
4226 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4227 h
->non_got_ref
= TRUE
;
4231 case R_PPC_VLE_SDA21_LO
:
4232 case R_PPC_VLE_SDA21
:
4233 case R_PPC_EMB_SDA21
:
4234 case R_PPC_EMB_RELSDA
:
4235 if (bfd_link_pic (info
))
4237 bad_shared_reloc (abfd
, r_type
);
4242 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4243 h
->non_got_ref
= TRUE
;
4247 case R_PPC_EMB_NADDR32
:
4248 case R_PPC_EMB_NADDR16
:
4249 case R_PPC_EMB_NADDR16_LO
:
4250 case R_PPC_EMB_NADDR16_HI
:
4251 case R_PPC_EMB_NADDR16_HA
:
4252 if (bfd_link_pic (info
))
4254 bad_shared_reloc (abfd
, r_type
);
4258 h
->non_got_ref
= TRUE
;
4261 case R_PPC_PLTREL24
:
4266 case R_PPC_PLTREL32
:
4267 case R_PPC_PLT16_LO
:
4268 case R_PPC_PLT16_HI
:
4269 case R_PPC_PLT16_HA
:
4271 fprintf (stderr
, "Reloc requires a PLT entry\n");
4273 /* This symbol requires a procedure linkage table entry. */
4278 /* It does not make sense to have a procedure linkage
4279 table entry for a non-ifunc local symbol. */
4280 info
->callbacks
->einfo
4281 /* xgettext:c-format */
4282 (_("%H: %s reloc against local symbol\n"),
4283 abfd
, sec
, rel
->r_offset
,
4284 ppc_elf_howto_table
[r_type
]->name
);
4285 bfd_set_error (bfd_error_bad_value
);
4293 if (r_type
== R_PPC_PLTREL24
)
4295 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4296 if (bfd_link_pic (info
))
4297 addend
= rel
->r_addend
;
4300 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4305 /* The following relocations don't need to propagate the
4306 relocation if linking a shared object since they are
4307 section relative. */
4309 case R_PPC_SECTOFF_LO
:
4310 case R_PPC_SECTOFF_HI
:
4311 case R_PPC_SECTOFF_HA
:
4312 case R_PPC_DTPREL16
:
4313 case R_PPC_DTPREL16_LO
:
4314 case R_PPC_DTPREL16_HI
:
4315 case R_PPC_DTPREL16_HA
:
4320 case R_PPC_REL16_LO
:
4321 case R_PPC_REL16_HI
:
4322 case R_PPC_REL16_HA
:
4323 case R_PPC_REL16DX_HA
:
4324 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4327 /* These are just markers. */
4329 case R_PPC_EMB_MRKREF
:
4333 case R_PPC_RELAX_PLT
:
4334 case R_PPC_RELAX_PLTREL24
:
4338 /* These should only appear in dynamic objects. */
4340 case R_PPC_GLOB_DAT
:
4341 case R_PPC_JMP_SLOT
:
4342 case R_PPC_RELATIVE
:
4343 case R_PPC_IRELATIVE
:
4346 /* These aren't handled yet. We'll report an error later. */
4348 case R_PPC_EMB_RELSEC16
:
4349 case R_PPC_EMB_RELST_LO
:
4350 case R_PPC_EMB_RELST_HI
:
4351 case R_PPC_EMB_RELST_HA
:
4352 case R_PPC_EMB_BIT_FLD
:
4355 /* This refers only to functions defined in the shared library. */
4356 case R_PPC_LOCAL24PC
:
4357 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4359 htab
->plt_type
= PLT_OLD
;
4360 htab
->old_bfd
= abfd
;
4362 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4365 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4370 /* This relocation describes the C++ object vtable hierarchy.
4371 Reconstruct it for later use during GC. */
4372 case R_PPC_GNU_VTINHERIT
:
4373 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4377 /* This relocation describes which C++ vtable entries are actually
4378 used. Record for later use during GC. */
4379 case R_PPC_GNU_VTENTRY
:
4380 BFD_ASSERT (h
!= NULL
);
4382 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4386 /* We shouldn't really be seeing TPREL32. */
4389 case R_PPC_TPREL16_LO
:
4390 case R_PPC_TPREL16_HI
:
4391 case R_PPC_TPREL16_HA
:
4392 if (bfd_link_dll (info
))
4393 info
->flags
|= DF_STATIC_TLS
;
4397 case R_PPC_DTPMOD32
:
4398 case R_PPC_DTPREL32
:
4404 && (sec
->flags
& SEC_CODE
) != 0
4405 && bfd_link_pic (info
)
4406 && htab
->plt_type
== PLT_UNSET
)
4408 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4409 the start of a function, which assembles to a REL32
4410 reference to .got2. If we detect one of these, then
4411 force the old PLT layout because the linker cannot
4412 reliably deduce the GOT pointer value needed for
4415 Elf_Internal_Sym
*isym
;
4417 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4422 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4425 htab
->plt_type
= PLT_OLD
;
4426 htab
->old_bfd
= abfd
;
4429 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4435 case R_PPC_ADDR16_LO
:
4436 case R_PPC_ADDR16_HI
:
4437 case R_PPC_ADDR16_HA
:
4440 if (h
!= NULL
&& !bfd_link_pic (info
))
4442 /* We may need a plt entry if the symbol turns out to be
4443 a function defined in a dynamic object. */
4444 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4447 /* We may need a copy reloc too. */
4449 h
->pointer_equality_needed
= 1;
4450 if (r_type
== R_PPC_ADDR16_HA
)
4451 ppc_elf_hash_entry (h
)->has_addr16_ha
= 1;
4452 if (r_type
== R_PPC_ADDR16_LO
)
4453 ppc_elf_hash_entry (h
)->has_addr16_lo
= 1;
4459 case R_PPC_REL14_BRTAKEN
:
4460 case R_PPC_REL14_BRNTAKEN
:
4463 if (h
== htab
->elf
.hgot
)
4465 if (htab
->plt_type
== PLT_UNSET
)
4467 htab
->plt_type
= PLT_OLD
;
4468 htab
->old_bfd
= abfd
;
4476 case R_PPC_ADDR14_BRTAKEN
:
4477 case R_PPC_ADDR14_BRNTAKEN
:
4478 if (h
!= NULL
&& !bfd_link_pic (info
))
4480 /* We may need a plt entry if the symbol turns out to be
4481 a function defined in a dynamic object. */
4483 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4489 /* If we are creating a shared library, and this is a reloc
4490 against a global symbol, or a non PC relative reloc
4491 against a local symbol, then we need to copy the reloc
4492 into the shared library. However, if we are linking with
4493 -Bsymbolic, we do not need to copy a reloc against a
4494 global symbol which is defined in an object we are
4495 including in the link (i.e., DEF_REGULAR is set). At
4496 this point we have not seen all the input files, so it is
4497 possible that DEF_REGULAR is not set now but will be set
4498 later (it is never cleared). In case of a weak definition,
4499 DEF_REGULAR may be cleared later by a strong definition in
4500 a shared library. We account for that possibility below by
4501 storing information in the dyn_relocs field of the hash
4502 table entry. A similar situation occurs when creating
4503 shared libraries and symbol visibility changes render the
4506 If on the other hand, we are creating an executable, we
4507 may need to keep relocations for symbols satisfied by a
4508 dynamic library if we manage to avoid copy relocs for the
4510 if ((bfd_link_pic (info
)
4511 && (must_be_dyn_reloc (info
, r_type
)
4513 && (!SYMBOLIC_BIND (info
, h
)
4514 || h
->root
.type
== bfd_link_hash_defweak
4515 || !h
->def_regular
))))
4516 || (ELIMINATE_COPY_RELOCS
4517 && !bfd_link_pic (info
)
4519 && (h
->root
.type
== bfd_link_hash_defweak
4520 || !h
->def_regular
)))
4524 "ppc_elf_check_relocs needs to "
4525 "create relocation for %s\n",
4526 (h
&& h
->root
.root
.string
4527 ? h
->root
.root
.string
: "<unknown>"));
4531 if (htab
->elf
.dynobj
== NULL
)
4532 htab
->elf
.dynobj
= abfd
;
4534 sreloc
= _bfd_elf_make_dynamic_reloc_section
4535 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4541 /* If this is a global symbol, we count the number of
4542 relocations we need for this symbol. */
4545 struct elf_dyn_relocs
*p
;
4546 struct elf_dyn_relocs
**rel_head
;
4548 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4550 if (p
== NULL
|| p
->sec
!= sec
)
4552 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4555 p
->next
= *rel_head
;
4562 if (!must_be_dyn_reloc (info
, r_type
))
4567 /* Track dynamic relocs needed for local syms too.
4568 We really need local syms available to do this
4570 struct ppc_dyn_relocs
*p
;
4571 struct ppc_dyn_relocs
**rel_head
;
4572 bfd_boolean is_ifunc
;
4575 Elf_Internal_Sym
*isym
;
4577 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4582 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4586 vpp
= &elf_section_data (s
)->local_dynrel
;
4587 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4588 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4590 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4592 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4594 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4597 p
->next
= *rel_head
;
4600 p
->ifunc
= is_ifunc
;
4614 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4615 and OBFD, and merge non-conflicting ones. */
4617 _bfd_elf_ppc_merge_fp_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4619 bfd
*obfd
= info
->output_bfd
;
4620 obj_attribute
*in_attr
, *in_attrs
;
4621 obj_attribute
*out_attr
, *out_attrs
;
4623 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4624 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4626 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4627 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4629 if (in_attr
->i
!= out_attr
->i
)
4631 int in_fp
= in_attr
->i
& 3;
4632 int out_fp
= out_attr
->i
& 3;
4636 else if (out_fp
== 0)
4639 out_attr
->i
^= in_fp
;
4641 else if (out_fp
!= 2 && in_fp
== 2)
4643 /* xgettext:c-format */
4644 (_("warning: %pB uses hard float, %pB uses soft float"), obfd
, ibfd
);
4645 else if (out_fp
== 2 && in_fp
!= 2)
4647 /* xgettext:c-format */
4648 (_("warning: %pB uses hard float, %pB uses soft float"), ibfd
, obfd
);
4649 else if (out_fp
== 1 && in_fp
== 3)
4651 /* xgettext:c-format */
4652 (_("warning: %pB uses double-precision hard float, "
4653 "%pB uses single-precision hard float"), obfd
, ibfd
);
4654 else if (out_fp
== 3 && in_fp
== 1)
4656 /* xgettext:c-format */
4657 (_("warning: %pB uses double-precision hard float, "
4658 "%pB uses single-precision hard float"), ibfd
, obfd
);
4660 in_fp
= in_attr
->i
& 0xc;
4661 out_fp
= out_attr
->i
& 0xc;
4664 else if (out_fp
== 0)
4667 out_attr
->i
^= in_fp
;
4669 else if (out_fp
!= 2 * 4 && in_fp
== 2 * 4)
4671 /* xgettext:c-format */
4672 (_("warning: %pB uses 64-bit long double, "
4673 "%pB uses 128-bit long double"), ibfd
, obfd
);
4674 else if (in_fp
!= 2 * 4 && out_fp
== 2 * 4)
4676 /* xgettext:c-format */
4677 (_("warning: %pB uses 64-bit long double, "
4678 "%pB uses 128-bit long double"), obfd
, ibfd
);
4679 else if (out_fp
== 1 * 4 && in_fp
== 3 * 4)
4681 /* xgettext:c-format */
4682 (_("warning: %pB uses IBM long double, "
4683 "%pB uses IEEE long double"), ibfd
, obfd
);
4684 else if (out_fp
== 3 * 4 && in_fp
== 1 * 4)
4686 /* xgettext:c-format */
4687 (_("warning: %pB uses IBM long double, "
4688 "%pB uses IEEE long double"), obfd
, ibfd
);
4692 /* Merge object attributes from IBFD into OBFD. Warn if
4693 there are conflicting attributes. */
4695 ppc_elf_merge_obj_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4698 obj_attribute
*in_attr
, *in_attrs
;
4699 obj_attribute
*out_attr
, *out_attrs
;
4701 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
4703 obfd
= info
->output_bfd
;
4704 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4705 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4707 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4708 merge non-conflicting ones. */
4709 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4710 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4711 if (in_attr
->i
!= out_attr
->i
)
4713 int in_vec
= in_attr
->i
& 3;
4714 int out_vec
= out_attr
->i
& 3;
4718 else if (out_vec
== 0)
4721 out_attr
->i
= in_vec
;
4723 /* For now, allow generic to transition to AltiVec or SPE
4724 without a warning. If GCC marked files with their stack
4725 alignment and used don't-care markings for files which are
4726 not affected by the vector ABI, we could warn about this
4728 else if (in_vec
== 1)
4730 else if (out_vec
== 1)
4733 out_attr
->i
= in_vec
;
4735 else if (out_vec
< in_vec
)
4737 /* xgettext:c-format */
4738 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4740 else if (out_vec
> in_vec
)
4742 /* xgettext:c-format */
4743 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4747 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4748 and merge non-conflicting ones. */
4749 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4750 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4751 if (in_attr
->i
!= out_attr
->i
)
4753 int in_struct
= in_attr
->i
& 3;
4754 int out_struct
= out_attr
->i
& 3;
4756 if (in_struct
== 0 || in_struct
== 3)
4758 else if (out_struct
== 0)
4761 out_attr
->i
= in_struct
;
4763 else if (out_struct
< in_struct
)
4765 /* xgettext:c-format */
4766 (_("warning: %pB uses r3/r4 for small structure returns, "
4767 "%pB uses memory"), obfd
, ibfd
);
4768 else if (out_struct
> in_struct
)
4770 /* xgettext:c-format */
4771 (_("warning: %pB uses r3/r4 for small structure returns, "
4772 "%pB uses memory"), ibfd
, obfd
);
4775 /* Merge Tag_compatibility attributes and any common GNU ones. */
4776 _bfd_elf_merge_object_attributes (ibfd
, info
);
4781 /* Merge backend specific data from an object file to the output
4782 object file when linking. */
4785 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4787 bfd
*obfd
= info
->output_bfd
;
4792 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4795 /* Check if we have the same endianness. */
4796 if (! _bfd_generic_verify_endian_match (ibfd
, info
))
4799 if (!ppc_elf_merge_obj_attributes (ibfd
, info
))
4802 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4803 old_flags
= elf_elfheader (obfd
)->e_flags
;
4804 if (!elf_flags_init (obfd
))
4806 /* First call, no flags set. */
4807 elf_flags_init (obfd
) = TRUE
;
4808 elf_elfheader (obfd
)->e_flags
= new_flags
;
4811 /* Compatible flags are ok. */
4812 else if (new_flags
== old_flags
)
4815 /* Incompatible flags. */
4818 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4819 to be linked with either. */
4821 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4822 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4826 (_("%pB: compiled with -mrelocatable and linked with "
4827 "modules compiled normally"), ibfd
);
4829 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4830 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4834 (_("%pB: compiled normally and linked with "
4835 "modules compiled with -mrelocatable"), ibfd
);
4838 /* The output is -mrelocatable-lib iff both the input files are. */
4839 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4840 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4842 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4843 but each input file is either -mrelocatable or -mrelocatable-lib. */
4844 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4845 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4846 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4847 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4849 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4850 any module uses it. */
4851 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4853 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4854 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4856 /* Warn about any other mismatches. */
4857 if (new_flags
!= old_flags
)
4861 /* xgettext:c-format */
4862 (_("%pB: uses different e_flags (%#x) fields "
4863 "than previous modules (%#x)"),
4864 ibfd
, new_flags
, old_flags
);
4869 bfd_set_error (bfd_error_bad_value
);
4878 ppc_elf_vle_split16 (bfd
*input_bfd
,
4879 asection
*input_section
,
4880 unsigned long offset
,
4883 split16_format_type split16_format
,
4886 unsigned int insn
, opcode
, top5
;
4888 insn
= bfd_get_32 (input_bfd
, loc
);
4889 opcode
= insn
& 0xfc00f800;
4890 if (opcode
== E_OR2I_INSN
4891 || opcode
== E_AND2I_DOT_INSN
4892 || opcode
== E_OR2IS_INSN
4893 || opcode
== E_LIS_INSN
4894 || opcode
== E_AND2IS_DOT_INSN
)
4896 if (split16_format
!= split16a_type
)
4899 split16_format
= split16a_type
;
4902 /* xgettext:c-format */
4903 (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
4904 input_bfd
, input_section
, offset
, opcode
);
4907 else if (opcode
== E_ADD2I_DOT_INSN
4908 || opcode
== E_ADD2IS_INSN
4909 || opcode
== E_CMP16I_INSN
4910 || opcode
== E_MULL2I_INSN
4911 || opcode
== E_CMPL16I_INSN
4912 || opcode
== E_CMPH16I_INSN
4913 || opcode
== E_CMPHL16I_INSN
)
4915 if (split16_format
!= split16d_type
)
4918 split16_format
= split16d_type
;
4921 /* xgettext:c-format */
4922 (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
4923 input_bfd
, input_section
, offset
, opcode
);
4926 top5
= value
& 0xf800;
4927 top5
= top5
<< (split16_format
== split16a_type
? 5 : 10);
4928 insn
&= (split16_format
== split16a_type
? ~0x1f07ff : ~0x3e007ff);
4930 insn
|= value
& 0x7ff;
4931 bfd_put_32 (input_bfd
, insn
, loc
);
4935 ppc_elf_vle_split20 (bfd
*output_bfd
, bfd_byte
*loc
, bfd_vma value
)
4939 insn
= bfd_get_32 (output_bfd
, loc
);
4940 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4941 /* Top 4 bits of value to 17..20. */
4942 insn
|= (value
& 0xf0000) >> 5;
4943 /* Next 5 bits of the value to 11..15. */
4944 insn
|= (value
& 0xf800) << 5;
4945 /* And the final 11 bits of the value to bits 21 to 31. */
4946 insn
|= value
& 0x7ff;
4947 bfd_put_32 (output_bfd
, insn
, loc
);
4951 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4952 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4954 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4955 struct bfd_link_info
*info
)
4957 struct ppc_elf_link_hash_table
*htab
;
4960 htab
= ppc_elf_hash_table (info
);
4962 if (htab
->plt_type
== PLT_UNSET
)
4964 struct elf_link_hash_entry
*h
;
4966 if (htab
->params
->plt_style
== PLT_OLD
)
4967 htab
->plt_type
= PLT_OLD
;
4968 else if (bfd_link_pic (info
)
4969 && htab
->elf
.dynamic_sections_created
4970 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
4971 FALSE
, FALSE
, TRUE
)) != NULL
4972 && (h
->type
== STT_FUNC
4975 && !(SYMBOL_CALLS_LOCAL (info
, h
)
4976 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
4978 /* Profiling of shared libs (and pies) is not supported with
4979 secure plt, because ppc32 does profiling before a
4980 function prologue and a secure plt pic call stubs needs
4981 r30 to be set up. */
4982 htab
->plt_type
= PLT_OLD
;
4987 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
4989 /* Look through the reloc flags left by ppc_elf_check_relocs.
4990 Use the old style bss plt if a file makes plt calls
4991 without using the new relocs, and if ld isn't given
4992 --secure-plt and we never see REL16 relocs. */
4993 if (plt_type
== PLT_UNSET
)
4995 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
4996 if (is_ppc_elf (ibfd
))
4998 if (ppc_elf_tdata (ibfd
)->has_rel16
)
5000 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
5003 htab
->old_bfd
= ibfd
;
5007 htab
->plt_type
= plt_type
;
5010 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
5012 if (htab
->old_bfd
!= NULL
)
5013 _bfd_error_handler (_("bss-plt forced due to %pB"), htab
->old_bfd
);
5015 _bfd_error_handler (_("bss-plt forced by profiling"));
5018 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
5020 if (htab
->plt_type
== PLT_NEW
)
5022 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
5023 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
5025 /* The new PLT is a loaded section. */
5026 if (htab
->elf
.splt
!= NULL
5027 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->elf
.splt
, flags
))
5030 /* The new GOT is not executable. */
5031 if (htab
->elf
.sgot
!= NULL
5032 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->elf
.sgot
, flags
))
5037 /* Stop an unused .glink section from affecting .text alignment. */
5038 if (htab
->glink
!= NULL
5039 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
5042 return htab
->plt_type
== PLT_NEW
;
5045 /* Return the section that should be marked against GC for a given
5049 ppc_elf_gc_mark_hook (asection
*sec
,
5050 struct bfd_link_info
*info
,
5051 Elf_Internal_Rela
*rel
,
5052 struct elf_link_hash_entry
*h
,
5053 Elf_Internal_Sym
*sym
)
5056 switch (ELF32_R_TYPE (rel
->r_info
))
5058 case R_PPC_GNU_VTINHERIT
:
5059 case R_PPC_GNU_VTENTRY
:
5063 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5066 /* Set plt output section type, htab->tls_get_addr, and call the
5067 generic ELF tls_setup function. */
5070 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5072 struct ppc_elf_link_hash_table
*htab
;
5074 htab
= ppc_elf_hash_table (info
);
5075 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5076 FALSE
, FALSE
, TRUE
);
5077 if (htab
->plt_type
!= PLT_NEW
)
5078 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5080 if (!htab
->params
->no_tls_get_addr_opt
)
5082 struct elf_link_hash_entry
*opt
, *tga
;
5083 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5084 FALSE
, FALSE
, TRUE
);
5086 && (opt
->root
.type
== bfd_link_hash_defined
5087 || opt
->root
.type
== bfd_link_hash_defweak
))
5089 /* If glibc supports an optimized __tls_get_addr call stub,
5090 signalled by the presence of __tls_get_addr_opt, and we'll
5091 be calling __tls_get_addr via a plt call stub, then
5092 make __tls_get_addr point to __tls_get_addr_opt. */
5093 tga
= htab
->tls_get_addr
;
5094 if (htab
->elf
.dynamic_sections_created
5096 && (tga
->type
== STT_FUNC
5098 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5099 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga
)))
5101 struct plt_entry
*ent
;
5102 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5103 if (ent
->plt
.refcount
> 0)
5107 tga
->root
.type
= bfd_link_hash_indirect
;
5108 tga
->root
.u
.i
.link
= &opt
->root
;
5109 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5111 if (opt
->dynindx
!= -1)
5113 /* Use __tls_get_addr_opt in dynamic relocations. */
5115 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5117 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5120 htab
->tls_get_addr
= opt
;
5125 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5127 if (htab
->plt_type
== PLT_NEW
5128 && htab
->elf
.splt
!= NULL
5129 && htab
->elf
.splt
->output_section
!= NULL
)
5131 elf_section_type (htab
->elf
.splt
->output_section
) = SHT_PROGBITS
;
5132 elf_section_flags (htab
->elf
.splt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5135 return _bfd_elf_tls_setup (obfd
, info
);
5138 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5142 branch_reloc_hash_match (const bfd
*ibfd
,
5143 const Elf_Internal_Rela
*rel
,
5144 const struct elf_link_hash_entry
*hash
)
5146 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5147 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5148 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5150 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5152 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5153 struct elf_link_hash_entry
*h
;
5155 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5156 while (h
->root
.type
== bfd_link_hash_indirect
5157 || h
->root
.type
== bfd_link_hash_warning
)
5158 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5165 /* Run through all the TLS relocs looking for optimization
5169 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5170 struct bfd_link_info
*info
)
5174 struct ppc_elf_link_hash_table
*htab
;
5177 if (!bfd_link_executable (info
))
5180 htab
= ppc_elf_hash_table (info
);
5184 /* Make two passes through the relocs. First time check that tls
5185 relocs involved in setting up a tls_get_addr call are indeed
5186 followed by such a call. If they are not, don't do any tls
5187 optimization. On the second pass twiddle tls_mask flags to
5188 notify relocate_section that optimization can be done, and
5189 adjust got and plt refcounts. */
5190 for (pass
= 0; pass
< 2; ++pass
)
5191 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
5193 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5194 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5196 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5197 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5199 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5200 int expecting_tls_get_addr
= 0;
5202 /* Read the relocations. */
5203 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5205 if (relstart
== NULL
)
5208 relend
= relstart
+ sec
->reloc_count
;
5209 for (rel
= relstart
; rel
< relend
; rel
++)
5211 enum elf_ppc_reloc_type r_type
;
5212 unsigned long r_symndx
;
5213 struct elf_link_hash_entry
*h
= NULL
;
5214 unsigned char *tls_mask
;
5215 char tls_set
, tls_clear
;
5216 bfd_boolean is_local
;
5217 bfd_signed_vma
*got_count
;
5219 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5220 if (r_symndx
>= symtab_hdr
->sh_info
)
5222 struct elf_link_hash_entry
**sym_hashes
;
5224 sym_hashes
= elf_sym_hashes (ibfd
);
5225 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5226 while (h
->root
.type
== bfd_link_hash_indirect
5227 || h
->root
.type
== bfd_link_hash_warning
)
5228 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5236 r_type
= ELF32_R_TYPE (rel
->r_info
);
5237 /* If this section has old-style __tls_get_addr calls
5238 without marker relocs, then check that each
5239 __tls_get_addr call reloc is preceded by a reloc
5240 that conceivably belongs to the __tls_get_addr arg
5241 setup insn. If we don't find matching arg setup
5242 relocs, don't do any tls optimization. */
5244 && sec
->has_tls_get_addr_call
5246 && h
== htab
->tls_get_addr
5247 && !expecting_tls_get_addr
5248 && is_branch_reloc (r_type
))
5250 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5251 "TLS optimization disabled\n",
5252 ibfd
, sec
, rel
->r_offset
);
5253 if (elf_section_data (sec
)->relocs
!= relstart
)
5258 expecting_tls_get_addr
= 0;
5261 case R_PPC_GOT_TLSLD16
:
5262 case R_PPC_GOT_TLSLD16_LO
:
5263 expecting_tls_get_addr
= 1;
5266 case R_PPC_GOT_TLSLD16_HI
:
5267 case R_PPC_GOT_TLSLD16_HA
:
5268 /* These relocs should never be against a symbol
5269 defined in a shared lib. Leave them alone if
5270 that turns out to be the case. */
5279 case R_PPC_GOT_TLSGD16
:
5280 case R_PPC_GOT_TLSGD16_LO
:
5281 expecting_tls_get_addr
= 1;
5284 case R_PPC_GOT_TLSGD16_HI
:
5285 case R_PPC_GOT_TLSGD16_HA
:
5291 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5295 case R_PPC_GOT_TPREL16
:
5296 case R_PPC_GOT_TPREL16_LO
:
5297 case R_PPC_GOT_TPREL16_HI
:
5298 case R_PPC_GOT_TPREL16_HA
:
5303 tls_clear
= TLS_TPREL
;
5311 expecting_tls_get_addr
= 2;
5322 if (!expecting_tls_get_addr
5323 || (expecting_tls_get_addr
== 1
5324 && !sec
->has_tls_get_addr_call
))
5327 if (rel
+ 1 < relend
5328 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5329 htab
->tls_get_addr
))
5332 /* Uh oh, we didn't find the expected call. We
5333 could just mark this symbol to exclude it
5334 from tls optimization but it's safer to skip
5335 the entire optimization. */
5336 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5337 "TLS optimization disabled\n"),
5338 ibfd
, sec
, rel
->r_offset
);
5339 if (elf_section_data (sec
)->relocs
!= relstart
)
5344 if (expecting_tls_get_addr
)
5346 struct plt_entry
*ent
;
5349 if (bfd_link_pic (info
)
5350 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5351 addend
= rel
[1].r_addend
;
5352 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5354 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5355 ent
->plt
.refcount
-= 1;
5357 if (expecting_tls_get_addr
== 2)
5363 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5364 got_count
= &h
->got
.refcount
;
5368 bfd_signed_vma
*lgot_refs
;
5369 struct plt_entry
**local_plt
;
5370 unsigned char *lgot_masks
;
5372 lgot_refs
= elf_local_got_refcounts (ibfd
);
5373 if (lgot_refs
== NULL
)
5375 local_plt
= (struct plt_entry
**)
5376 (lgot_refs
+ symtab_hdr
->sh_info
);
5377 lgot_masks
= (unsigned char *)
5378 (local_plt
+ symtab_hdr
->sh_info
);
5379 tls_mask
= &lgot_masks
[r_symndx
];
5380 got_count
= &lgot_refs
[r_symndx
];
5385 /* We managed to get rid of a got entry. */
5390 *tls_mask
|= tls_set
;
5391 *tls_mask
&= ~tls_clear
;
5394 if (elf_section_data (sec
)->relocs
!= relstart
)
5398 htab
->do_tls_opt
= 1;
5402 /* Find dynamic relocs for H that apply to read-only sections. */
5405 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5407 struct elf_dyn_relocs
*p
;
5409 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5411 asection
*s
= p
->sec
->output_section
;
5413 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5419 /* Return true if we have dynamic relocs against H or any of its weak
5420 aliases, that apply to read-only sections. Cannot be used after
5421 size_dynamic_sections. */
5424 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5426 struct ppc_elf_link_hash_entry
*eh
= ppc_elf_hash_entry (h
);
5429 if (readonly_dynrelocs (&eh
->elf
))
5431 eh
= ppc_elf_hash_entry (eh
->elf
.u
.alias
);
5432 } while (eh
!= NULL
&& &eh
->elf
!= h
);
5437 /* Return whether H has pc-relative dynamic relocs. */
5440 pc_dynrelocs (struct elf_link_hash_entry
*h
)
5442 struct elf_dyn_relocs
*p
;
5444 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5445 if (p
->pc_count
!= 0)
5450 /* Adjust a symbol defined by a dynamic object and referenced by a
5451 regular object. The current definition is in some section of the
5452 dynamic object, but we're not including those sections. We have to
5453 change the definition to something the rest of the link can
5457 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5458 struct elf_link_hash_entry
*h
)
5460 struct ppc_elf_link_hash_table
*htab
;
5464 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5465 h
->root
.root
.string
);
5468 /* Make sure we know what is going on here. */
5469 htab
= ppc_elf_hash_table (info
);
5470 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5472 || h
->type
== STT_GNU_IFUNC
5476 && !h
->def_regular
)));
5478 /* Deal with function syms. */
5479 if (h
->type
== STT_FUNC
5480 || h
->type
== STT_GNU_IFUNC
5483 bfd_boolean local
= (SYMBOL_CALLS_LOCAL (info
, h
)
5484 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
5485 /* Discard dyn_relocs when non-pic if we've decided that a
5486 function symbol is local. */
5487 if (!bfd_link_pic (info
) && local
)
5488 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5490 /* Clear procedure linkage table information for any symbol that
5491 won't need a .plt entry. */
5492 struct plt_entry
*ent
;
5493 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5494 if (ent
->plt
.refcount
> 0)
5497 || (h
->type
!= STT_GNU_IFUNC
&& local
))
5499 /* A PLT entry is not required/allowed when:
5501 1. We are not using ld.so; because then the PLT entry
5502 can't be set up, so we can't use one. In this case,
5503 ppc_elf_adjust_dynamic_symbol won't even be called.
5505 2. GC has rendered the entry unused.
5507 3. We know for certain that a call to this symbol
5508 will go to this object, or will remain undefined. */
5509 h
->plt
.plist
= NULL
;
5511 h
->pointer_equality_needed
= 0;
5515 /* Taking a function's address in a read/write section
5516 doesn't require us to define the function symbol in the
5517 executable on a plt call stub. A dynamic reloc can
5518 be used instead, giving better runtime performance.
5519 (Calls via that function pointer don't need to bounce
5520 through the plt call stub.) Similarly, use a dynamic
5521 reloc for a weak reference when possible, allowing the
5522 resolution of the symbol to be set at load time rather
5524 if ((h
->pointer_equality_needed
5526 && !h
->ref_regular_nonweak
5527 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
5528 && !htab
->is_vxworks
5529 && !ppc_elf_hash_entry (h
)->has_sda_refs
5530 && !readonly_dynrelocs (h
))
5532 h
->pointer_equality_needed
= 0;
5533 /* If we haven't seen a branch reloc then we don't need
5536 h
->plt
.plist
= NULL
;
5538 else if (!bfd_link_pic (info
))
5539 /* We are going to be defining the function symbol on the
5540 plt stub, so no dyn_relocs needed when non-pic. */
5541 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5543 h
->protected_def
= 0;
5544 /* Function symbols can't have copy relocs. */
5548 h
->plt
.plist
= NULL
;
5550 /* If this is a weak symbol, and there is a real definition, the
5551 processor independent code will have arranged for us to see the
5552 real definition first, and we can just use the same value. */
5553 if (h
->is_weakalias
)
5555 struct elf_link_hash_entry
*def
= weakdef (h
);
5556 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
5557 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
5558 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
5559 if (def
->root
.u
.def
.section
== htab
->elf
.sdynbss
5560 || def
->root
.u
.def
.section
== htab
->elf
.sdynrelro
5561 || def
->root
.u
.def
.section
== htab
->dynsbss
)
5562 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5566 /* This is a reference to a symbol defined by a dynamic object which
5567 is not a function. */
5569 /* If we are creating a shared library, we must presume that the
5570 only references to the symbol are via the global offset table.
5571 For such cases we need not do anything here; the relocations will
5572 be handled correctly by relocate_section. */
5573 if (bfd_link_pic (info
))
5575 h
->protected_def
= 0;
5579 /* If there are no references to this symbol that do not use the
5580 GOT, we don't need to generate a copy reloc. */
5581 if (!h
->non_got_ref
)
5583 h
->protected_def
= 0;
5587 /* Protected variables do not work with .dynbss. The copy in
5588 .dynbss won't be used by the shared library with the protected
5589 definition for the variable. Editing to PIC, or text relocations
5590 are preferable to an incorrect program. */
5591 if (h
->protected_def
)
5593 if (ELIMINATE_COPY_RELOCS
5594 && ppc_elf_hash_entry (h
)->has_addr16_ha
5595 && ppc_elf_hash_entry (h
)->has_addr16_lo
5596 && htab
->params
->pic_fixup
== 0
5597 && info
->disable_target_specific_optimizations
<= 1)
5598 htab
->params
->pic_fixup
= 1;
5602 /* If -z nocopyreloc was given, we won't generate them either. */
5603 if (info
->nocopyreloc
)
5606 /* If we don't find any dynamic relocs in read-only sections, then
5607 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5608 We can't do this if there are any small data relocations. This
5609 doesn't work on VxWorks, where we can not have dynamic
5610 relocations (other than copy and jump slot relocations) in an
5612 if (ELIMINATE_COPY_RELOCS
5613 && !ppc_elf_hash_entry (h
)->has_sda_refs
5614 && !htab
->is_vxworks
5616 && !alias_readonly_dynrelocs (h
))
5619 /* We must allocate the symbol in our .dynbss section, which will
5620 become part of the .bss section of the executable. There will be
5621 an entry for this symbol in the .dynsym section. The dynamic
5622 object will contain position independent code, so all references
5623 from the dynamic object to this symbol will go through the global
5624 offset table. The dynamic linker will use the .dynsym entry to
5625 determine the address it must put in the global offset table, so
5626 both the dynamic object and the regular object will refer to the
5627 same memory location for the variable.
5629 Of course, if the symbol is referenced using SDAREL relocs, we
5630 must instead allocate it in .sbss. */
5631 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5633 else if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
5634 s
= htab
->elf
.sdynrelro
;
5636 s
= htab
->elf
.sdynbss
;
5637 BFD_ASSERT (s
!= NULL
);
5639 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5643 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5644 linker to copy the initial value out of the dynamic object
5645 and into the runtime process image. */
5646 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5647 srel
= htab
->relsbss
;
5648 else if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
5649 srel
= htab
->elf
.sreldynrelro
;
5651 srel
= htab
->elf
.srelbss
;
5652 BFD_ASSERT (srel
!= NULL
);
5653 srel
->size
+= sizeof (Elf32_External_Rela
);
5657 /* We no longer want dyn_relocs. */
5658 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5659 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
5662 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5663 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5664 specifying the addend on the plt relocation. For -fpic code, the sym
5665 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5666 xxxxxxxx.got2.plt_pic32.<callee>. */
5669 add_stub_sym (struct plt_entry
*ent
,
5670 struct elf_link_hash_entry
*h
,
5671 struct bfd_link_info
*info
)
5673 struct elf_link_hash_entry
*sh
;
5674 size_t len1
, len2
, len3
;
5677 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5679 if (bfd_link_pic (info
))
5680 stub
= ".plt_pic32.";
5682 stub
= ".plt_call32.";
5684 len1
= strlen (h
->root
.root
.string
);
5685 len2
= strlen (stub
);
5688 len3
= strlen (ent
->sec
->name
);
5689 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5692 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5694 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5695 memcpy (name
+ 8 + len3
, stub
, len2
);
5696 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5697 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5700 if (sh
->root
.type
== bfd_link_hash_new
)
5702 sh
->root
.type
= bfd_link_hash_defined
;
5703 sh
->root
.u
.def
.section
= htab
->glink
;
5704 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5705 sh
->ref_regular
= 1;
5706 sh
->def_regular
= 1;
5707 sh
->ref_regular_nonweak
= 1;
5708 sh
->forced_local
= 1;
5710 sh
->root
.linker_def
= 1;
5715 /* Allocate NEED contiguous space in .got, and return the offset.
5716 Handles allocation of the got header when crossing 32k. */
5719 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5722 unsigned int max_before_header
;
5724 if (htab
->plt_type
== PLT_VXWORKS
)
5726 where
= htab
->elf
.sgot
->size
;
5727 htab
->elf
.sgot
->size
+= need
;
5731 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5732 if (need
<= htab
->got_gap
)
5734 where
= max_before_header
- htab
->got_gap
;
5735 htab
->got_gap
-= need
;
5739 if (htab
->elf
.sgot
->size
+ need
> max_before_header
5740 && htab
->elf
.sgot
->size
<= max_before_header
)
5742 htab
->got_gap
= max_before_header
- htab
->elf
.sgot
->size
;
5743 htab
->elf
.sgot
->size
= max_before_header
+ htab
->got_header_size
;
5745 where
= htab
->elf
.sgot
->size
;
5746 htab
->elf
.sgot
->size
+= need
;
5752 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5753 TLS_LD is excluded because those go in a special GOT slot. */
5755 static inline unsigned int
5756 got_entries_needed (int tls_mask
)
5759 if ((tls_mask
& TLS_TLS
) == 0)
5764 if ((tls_mask
& TLS_GD
) != 0)
5766 if ((tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5768 if ((tls_mask
& TLS_DTPREL
) != 0)
5774 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5775 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5778 static inline unsigned int
5779 got_relocs_needed (int tls_mask
, unsigned int need
, bfd_boolean known
)
5781 /* All the entries we allocated need relocs.
5782 Except IE in executable with a local symbol. We could also omit
5783 the DTPREL reloc on the second word of a GD entry under the same
5784 condition as that for IE, but ld.so needs to differentiate
5785 LD and GD entries. */
5786 if ((tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0 && known
)
5788 return need
* sizeof (Elf32_External_Rela
) / 4;
5791 /* If H is undefined, make it dynamic if that makes sense. */
5794 ensure_undef_dynamic (struct bfd_link_info
*info
,
5795 struct elf_link_hash_entry
*h
)
5797 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5799 if (htab
->dynamic_sections_created
5800 && ((info
->dynamic_undefined_weak
!= 0
5801 && h
->root
.type
== bfd_link_hash_undefweak
)
5802 || h
->root
.type
== bfd_link_hash_undefined
)
5805 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
5806 return bfd_elf_link_record_dynamic_symbol (info
, h
);
5810 /* Allocate space in associated reloc sections for dynamic relocs. */
5813 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5815 struct bfd_link_info
*info
= inf
;
5816 struct ppc_elf_link_hash_entry
*eh
;
5817 struct ppc_elf_link_hash_table
*htab
;
5818 struct elf_dyn_relocs
*p
;
5821 if (h
->root
.type
== bfd_link_hash_indirect
)
5824 htab
= ppc_elf_hash_table (info
);
5825 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5826 if (eh
->elf
.got
.refcount
> 0
5827 || (ELIMINATE_COPY_RELOCS
5828 && !eh
->elf
.def_regular
5829 && eh
->elf
.protected_def
5830 && eh
->has_addr16_ha
5831 && eh
->has_addr16_lo
5832 && htab
->params
->pic_fixup
> 0))
5836 /* Make sure this symbol is output as a dynamic symbol. */
5837 if (!ensure_undef_dynamic (info
, &eh
->elf
))
5841 if ((eh
->tls_mask
& TLS_LD
) != 0)
5843 if (!eh
->elf
.def_dynamic
)
5844 /* We'll just use htab->tlsld_got.offset. This should
5845 always be the case. It's a little odd if we have
5846 a local dynamic reloc against a non-local symbol. */
5847 htab
->tlsld_got
.refcount
+= 1;
5851 need
+= got_entries_needed (eh
->tls_mask
);
5853 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5856 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5857 if ((bfd_link_pic (info
)
5858 || (htab
->elf
.dynamic_sections_created
5859 && eh
->elf
.dynindx
!= -1
5860 && !SYMBOL_REFERENCES_LOCAL (info
, &eh
->elf
)))
5861 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &eh
->elf
))
5864 bfd_boolean tprel_known
= (bfd_link_executable (info
)
5865 && SYMBOL_REFERENCES_LOCAL (info
,
5868 need
= got_relocs_needed (eh
->tls_mask
, need
, tprel_known
);
5869 if ((eh
->tls_mask
& TLS_LD
) != 0 && eh
->elf
.def_dynamic
)
5870 need
-= sizeof (Elf32_External_Rela
);
5871 rsec
= htab
->elf
.srelgot
;
5872 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5873 rsec
= htab
->elf
.irelplt
;
5879 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5881 /* If no dynamic sections we can't have dynamic relocs, except for
5882 IFUNCs which are handled even in static executables. */
5883 if (!htab
->elf
.dynamic_sections_created
5884 && h
->type
!= STT_GNU_IFUNC
)
5885 eh
->dyn_relocs
= NULL
;
5887 /* Discard relocs on undefined symbols that must be local. */
5888 else if (h
->root
.type
== bfd_link_hash_undefined
5889 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
5890 eh
->dyn_relocs
= NULL
;
5892 /* Also discard relocs on undefined weak syms with non-default
5893 visibility, or when dynamic_undefined_weak says so. */
5894 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
5895 eh
->dyn_relocs
= NULL
;
5897 if (eh
->dyn_relocs
== NULL
)
5900 /* In the shared -Bsymbolic case, discard space allocated for
5901 dynamic pc-relative relocs against symbols which turn out to be
5902 defined in regular objects. For the normal shared case, discard
5903 space for relocs that have become local due to symbol visibility
5905 else if (bfd_link_pic (info
))
5907 /* Relocs that use pc_count are those that appear on a call insn,
5908 or certain REL relocs (see must_be_dyn_reloc) that can be
5909 generated via assembly. We want calls to protected symbols to
5910 resolve directly to the function rather than going via the plt.
5911 If people want function pointer comparisons to work as expected
5912 then they should avoid writing weird assembly. */
5913 if (SYMBOL_CALLS_LOCAL (info
, h
))
5915 struct elf_dyn_relocs
**pp
;
5917 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5919 p
->count
-= p
->pc_count
;
5928 if (htab
->is_vxworks
)
5930 struct elf_dyn_relocs
**pp
;
5932 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5934 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
5941 if (eh
->dyn_relocs
!= NULL
)
5943 /* Make sure this symbol is output as a dynamic symbol. */
5944 if (!ensure_undef_dynamic (info
, h
))
5948 else if (ELIMINATE_COPY_RELOCS
)
5950 /* For the non-pic case, discard space for relocs against
5951 symbols which turn out to need copy relocs or are not
5953 if (h
->dynamic_adjusted
5955 && !ELF_COMMON_DEF_P (h
)
5956 && !(h
->protected_def
5957 && eh
->has_addr16_ha
5958 && eh
->has_addr16_lo
5959 && htab
->params
->pic_fixup
> 0))
5961 /* Make sure this symbol is output as a dynamic symbol. */
5962 if (!ensure_undef_dynamic (info
, h
))
5965 if (h
->dynindx
== -1)
5966 eh
->dyn_relocs
= NULL
;
5969 eh
->dyn_relocs
= NULL
;
5972 /* Allocate space. */
5973 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5975 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5976 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5977 sreloc
= htab
->elf
.irelplt
;
5978 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
5981 /* Handle PLT relocs. Done last, after dynindx has settled. */
5982 dyn
= htab
->elf
.dynamic_sections_created
&& h
->dynindx
!= -1;
5983 if (dyn
|| h
->type
== STT_GNU_IFUNC
)
5985 struct plt_entry
*ent
;
5986 bfd_boolean doneone
= FALSE
;
5987 bfd_vma plt_offset
= 0, glink_offset
= 0;
5989 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5990 if (ent
->plt
.refcount
> 0)
5992 asection
*s
= htab
->elf
.splt
;
5997 if (htab
->plt_type
== PLT_NEW
|| !dyn
)
6001 plt_offset
= s
->size
;
6004 ent
->plt
.offset
= plt_offset
;
6007 if (!doneone
|| bfd_link_pic (info
))
6009 glink_offset
= s
->size
;
6010 s
->size
+= GLINK_ENTRY_SIZE (htab
, h
);
6013 && !bfd_link_pic (info
)
6017 h
->root
.u
.def
.section
= s
;
6018 h
->root
.u
.def
.value
= glink_offset
;
6020 ent
->glink_offset
= glink_offset
;
6022 if (htab
->params
->emit_stub_syms
6023 && !add_stub_sym (ent
, h
, info
))
6030 /* If this is the first .plt entry, make room
6031 for the special first entry. */
6033 s
->size
+= htab
->plt_initial_entry_size
;
6035 /* The PowerPC PLT is actually composed of two
6036 parts, the first part is 2 words (for a load
6037 and a jump), and then there is a remaining
6038 word available at the end. */
6039 plt_offset
= (htab
->plt_initial_entry_size
6040 + (htab
->plt_slot_size
6042 - htab
->plt_initial_entry_size
)
6043 / htab
->plt_entry_size
)));
6045 /* If this symbol is not defined in a regular
6046 file, and we are not generating a shared
6047 library, then set the symbol to this location
6048 in the .plt. This is to avoid text
6049 relocations, and is required to make
6050 function pointers compare as equal between
6051 the normal executable and the shared library. */
6052 if (! bfd_link_pic (info
)
6056 h
->root
.u
.def
.section
= s
;
6057 h
->root
.u
.def
.value
= plt_offset
;
6060 /* Make room for this entry. */
6061 s
->size
+= htab
->plt_entry_size
;
6062 /* After the 8192nd entry, room for two entries
6064 if (htab
->plt_type
== PLT_OLD
6065 && (s
->size
- htab
->plt_initial_entry_size
)
6066 / htab
->plt_entry_size
6067 > PLT_NUM_SINGLE_ENTRIES
)
6068 s
->size
+= htab
->plt_entry_size
;
6070 ent
->plt
.offset
= plt_offset
;
6073 /* We also need to make an entry in the .rela.plt section. */
6077 htab
->elf
.irelplt
->size
+= sizeof (Elf32_External_Rela
);
6080 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
6082 if (htab
->plt_type
== PLT_VXWORKS
)
6084 /* Allocate space for the unloaded relocations. */
6085 if (!bfd_link_pic (info
)
6086 && htab
->elf
.dynamic_sections_created
)
6089 == (bfd_vma
) htab
->plt_initial_entry_size
)
6091 htab
->srelplt2
->size
6092 += (sizeof (Elf32_External_Rela
)
6093 * VXWORKS_PLTRESOLVE_RELOCS
);
6096 htab
->srelplt2
->size
6097 += (sizeof (Elf32_External_Rela
)
6098 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
6101 /* Every PLT entry has an associated GOT entry in
6103 htab
->elf
.sgotplt
->size
+= 4;
6110 ent
->plt
.offset
= (bfd_vma
) -1;
6114 h
->plt
.plist
= NULL
;
6120 h
->plt
.plist
= NULL
;
6127 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6128 read-only sections. */
6131 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
6135 if (h
->root
.type
== bfd_link_hash_indirect
)
6138 sec
= readonly_dynrelocs (h
);
6141 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
6143 info
->flags
|= DF_TEXTREL
;
6144 info
->callbacks
->minfo
6145 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
6146 sec
->owner
, h
->root
.root
.string
, sec
);
6148 /* Not an error, just cut short the traversal. */
6154 static const unsigned char glink_eh_frame_cie
[] =
6156 0, 0, 0, 16, /* length. */
6157 0, 0, 0, 0, /* id. */
6158 1, /* CIE version. */
6159 'z', 'R', 0, /* Augmentation string. */
6160 4, /* Code alignment. */
6161 0x7c, /* Data alignment. */
6163 1, /* Augmentation size. */
6164 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6165 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6168 /* Set the sizes of the dynamic sections. */
6171 ppc_elf_size_dynamic_sections (bfd
*output_bfd
,
6172 struct bfd_link_info
*info
)
6174 struct ppc_elf_link_hash_table
*htab
;
6180 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6183 htab
= ppc_elf_hash_table (info
);
6184 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6186 if (elf_hash_table (info
)->dynamic_sections_created
)
6188 /* Set the contents of the .interp section to the interpreter. */
6189 if (bfd_link_executable (info
) && !info
->nointerp
)
6191 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6192 BFD_ASSERT (s
!= NULL
);
6193 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6194 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6198 if (htab
->plt_type
== PLT_OLD
)
6199 htab
->got_header_size
= 16;
6200 else if (htab
->plt_type
== PLT_NEW
)
6201 htab
->got_header_size
= 12;
6203 /* Set up .got offsets for local syms, and space for local dynamic
6205 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
6207 bfd_signed_vma
*local_got
;
6208 bfd_signed_vma
*end_local_got
;
6209 struct plt_entry
**local_plt
;
6210 struct plt_entry
**end_local_plt
;
6212 bfd_size_type locsymcount
;
6213 Elf_Internal_Shdr
*symtab_hdr
;
6215 if (!is_ppc_elf (ibfd
))
6218 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6220 struct ppc_dyn_relocs
*p
;
6222 for (p
= ((struct ppc_dyn_relocs
*)
6223 elf_section_data (s
)->local_dynrel
);
6227 if (!bfd_is_abs_section (p
->sec
)
6228 && bfd_is_abs_section (p
->sec
->output_section
))
6230 /* Input section has been discarded, either because
6231 it is a copy of a linkonce section or due to
6232 linker script /DISCARD/, so we'll be discarding
6235 else if (htab
->is_vxworks
6236 && strcmp (p
->sec
->output_section
->name
,
6239 /* Relocations in vxworks .tls_vars sections are
6240 handled specially by the loader. */
6242 else if (p
->count
!= 0)
6244 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6246 sreloc
= htab
->elf
.irelplt
;
6247 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6248 if ((p
->sec
->output_section
->flags
6249 & (SEC_READONLY
| SEC_ALLOC
))
6250 == (SEC_READONLY
| SEC_ALLOC
))
6252 info
->flags
|= DF_TEXTREL
;
6253 info
->callbacks
->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
6254 p
->sec
->owner
, p
->sec
);
6260 local_got
= elf_local_got_refcounts (ibfd
);
6264 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6265 locsymcount
= symtab_hdr
->sh_info
;
6266 end_local_got
= local_got
+ locsymcount
;
6267 local_plt
= (struct plt_entry
**) end_local_got
;
6268 end_local_plt
= local_plt
+ locsymcount
;
6269 lgot_masks
= (char *) end_local_plt
;
6271 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6275 if ((*lgot_masks
& TLS_LD
) != 0)
6276 htab
->tlsld_got
.refcount
+= 1;
6277 need
= got_entries_needed (*lgot_masks
);
6279 *local_got
= (bfd_vma
) -1;
6282 *local_got
= allocate_got (htab
, need
);
6283 if (bfd_link_pic (info
))
6286 bfd_boolean tprel_known
= bfd_link_executable (info
);
6288 need
= got_relocs_needed (*lgot_masks
, need
, tprel_known
);
6289 srel
= htab
->elf
.srelgot
;
6290 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6291 srel
= htab
->elf
.irelplt
;
6297 *local_got
= (bfd_vma
) -1;
6299 if (htab
->is_vxworks
)
6302 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6303 for (; local_plt
< end_local_plt
; ++local_plt
)
6305 struct plt_entry
*ent
;
6306 bfd_boolean doneone
= FALSE
;
6307 bfd_vma plt_offset
= 0, glink_offset
= 0;
6309 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6310 if (ent
->plt
.refcount
> 0)
6316 plt_offset
= s
->size
;
6319 ent
->plt
.offset
= plt_offset
;
6322 if (!doneone
|| bfd_link_pic (info
))
6324 glink_offset
= s
->size
;
6325 s
->size
+= GLINK_ENTRY_SIZE (htab
, NULL
);
6327 ent
->glink_offset
= glink_offset
;
6331 htab
->elf
.irelplt
->size
+= sizeof (Elf32_External_Rela
);
6336 ent
->plt
.offset
= (bfd_vma
) -1;
6340 /* Allocate space for global sym dynamic relocs. */
6341 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6343 if (htab
->tlsld_got
.refcount
> 0)
6345 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6346 if (bfd_link_pic (info
))
6347 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
6350 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6352 if (htab
->elf
.sgot
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6354 unsigned int g_o_t
= 32768;
6356 /* If we haven't allocated the header, do so now. When we get here,
6357 for old plt/got the got size will be 0 to 32764 (not allocated),
6358 or 32780 to 65536 (header allocated). For new plt/got, the
6359 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6360 if (htab
->elf
.sgot
->size
<= 32768)
6362 g_o_t
= htab
->elf
.sgot
->size
;
6363 if (htab
->plt_type
== PLT_OLD
)
6365 htab
->elf
.sgot
->size
+= htab
->got_header_size
;
6368 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6370 if (bfd_link_pic (info
))
6372 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6374 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6375 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6377 if (info
->emitrelocations
)
6379 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6381 if (sda
!= NULL
&& sda
->ref_regular
)
6382 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6383 sda
= htab
->sdata
[1].sym
;
6384 if (sda
!= NULL
&& sda
->ref_regular
)
6385 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6388 if (htab
->glink
!= NULL
6389 && htab
->glink
->size
!= 0
6390 && htab
->elf
.dynamic_sections_created
)
6392 htab
->glink_pltresolve
= htab
->glink
->size
;
6393 /* Space for the branch table. */
6395 += htab
->elf
.srelplt
->size
/ (sizeof (Elf32_External_Rela
) / 4) - 4;
6396 /* Pad out to align the start of PLTresolve. */
6397 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6399 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6401 if (htab
->params
->emit_stub_syms
)
6403 struct elf_link_hash_entry
*sh
;
6404 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6405 TRUE
, FALSE
, FALSE
);
6408 if (sh
->root
.type
== bfd_link_hash_new
)
6410 sh
->root
.type
= bfd_link_hash_defined
;
6411 sh
->root
.u
.def
.section
= htab
->glink
;
6412 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6413 sh
->ref_regular
= 1;
6414 sh
->def_regular
= 1;
6415 sh
->ref_regular_nonweak
= 1;
6416 sh
->forced_local
= 1;
6418 sh
->root
.linker_def
= 1;
6420 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6421 TRUE
, FALSE
, FALSE
);
6424 if (sh
->root
.type
== bfd_link_hash_new
)
6426 sh
->root
.type
= bfd_link_hash_defined
;
6427 sh
->root
.u
.def
.section
= htab
->glink
;
6428 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6429 sh
->ref_regular
= 1;
6430 sh
->def_regular
= 1;
6431 sh
->ref_regular_nonweak
= 1;
6432 sh
->forced_local
= 1;
6434 sh
->root
.linker_def
= 1;
6439 if (htab
->glink
!= NULL
6440 && htab
->glink
->size
!= 0
6441 && htab
->glink_eh_frame
!= NULL
6442 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6443 && _bfd_elf_eh_frame_present (info
))
6445 s
= htab
->glink_eh_frame
;
6446 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6447 if (bfd_link_pic (info
))
6450 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6455 /* We've now determined the sizes of the various dynamic sections.
6456 Allocate memory for them. */
6458 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6460 bfd_boolean strip_section
= TRUE
;
6462 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6465 if (s
== htab
->elf
.splt
6466 || s
== htab
->elf
.sgot
)
6468 /* We'd like to strip these sections if they aren't needed, but if
6469 we've exported dynamic symbols from them we must leave them.
6470 It's too late to tell BFD to get rid of the symbols. */
6471 if (htab
->elf
.hplt
!= NULL
)
6472 strip_section
= FALSE
;
6473 /* Strip this section if we don't need it; see the
6476 else if (s
== htab
->elf
.iplt
6478 || s
== htab
->glink_eh_frame
6479 || s
== htab
->elf
.sgotplt
6481 || s
== htab
->elf
.sdynbss
6482 || s
== htab
->elf
.sdynrelro
6483 || s
== htab
->dynsbss
)
6485 /* Strip these too. */
6487 else if (s
== htab
->sdata
[0].section
6488 || s
== htab
->sdata
[1].section
)
6490 strip_section
= (s
->flags
& SEC_KEEP
) == 0;
6492 else if (CONST_STRNEQ (bfd_get_section_name (htab
->elf
.dynobj
, s
),
6497 /* Remember whether there are any relocation sections. */
6500 /* We use the reloc_count field as a counter if we need
6501 to copy relocs into the output file. */
6507 /* It's not one of our sections, so don't allocate space. */
6511 if (s
->size
== 0 && strip_section
)
6513 /* If we don't need this section, strip it from the
6514 output file. This is mostly to handle .rela.bss and
6515 .rela.plt. We must create both sections in
6516 create_dynamic_sections, because they must be created
6517 before the linker maps input sections to output
6518 sections. The linker does that before
6519 adjust_dynamic_symbol is called, and it is that
6520 function which decides whether anything needs to go
6521 into these sections. */
6522 s
->flags
|= SEC_EXCLUDE
;
6526 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
6529 /* Allocate memory for the section contents. */
6530 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
6531 if (s
->contents
== NULL
)
6535 if (htab
->elf
.dynamic_sections_created
)
6537 /* Add some entries to the .dynamic section. We fill in the
6538 values later, in ppc_elf_finish_dynamic_sections, but we
6539 must add the entries now so that we get the correct size for
6540 the .dynamic section. The DT_DEBUG entry is filled in by the
6541 dynamic linker and used by the debugger. */
6542 #define add_dynamic_entry(TAG, VAL) \
6543 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6545 if (bfd_link_executable (info
))
6547 if (!add_dynamic_entry (DT_DEBUG
, 0))
6551 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
6553 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6554 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6555 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6556 || !add_dynamic_entry (DT_JMPREL
, 0))
6560 if (htab
->plt_type
== PLT_NEW
6561 && htab
->glink
!= NULL
6562 && htab
->glink
->size
!= 0)
6564 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
6566 if (!htab
->params
->no_tls_get_addr_opt
6567 && htab
->tls_get_addr
!= NULL
6568 && htab
->tls_get_addr
->plt
.plist
!= NULL
6569 && !add_dynamic_entry (DT_PPC_OPT
, PPC_OPT_TLS
))
6575 if (!add_dynamic_entry (DT_RELA
, 0)
6576 || !add_dynamic_entry (DT_RELASZ
, 0)
6577 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
6581 /* If any dynamic relocs apply to a read-only section, then we
6582 need a DT_TEXTREL entry. */
6583 if ((info
->flags
& DF_TEXTREL
) == 0)
6584 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
6587 if ((info
->flags
& DF_TEXTREL
) != 0)
6589 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6592 if (htab
->is_vxworks
6593 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
6596 #undef add_dynamic_entry
6598 if (htab
->glink_eh_frame
!= NULL
6599 && htab
->glink_eh_frame
->contents
!= NULL
)
6601 unsigned char *p
= htab
->glink_eh_frame
->contents
;
6604 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
6605 /* CIE length (rewrite in case little-endian). */
6606 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
6607 p
+= sizeof (glink_eh_frame_cie
);
6609 val
= htab
->glink_eh_frame
->size
- 4 - sizeof (glink_eh_frame_cie
);
6610 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6613 val
= p
- htab
->glink_eh_frame
->contents
;
6614 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6616 /* Offset to .glink. Set later. */
6619 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
, p
);
6624 if (bfd_link_pic (info
)
6625 && htab
->elf
.dynamic_sections_created
)
6627 bfd_vma adv
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8) >> 2;
6629 *p
++ = DW_CFA_advance_loc
+ adv
;
6632 *p
++ = DW_CFA_advance_loc1
;
6635 else if (adv
< 65536)
6637 *p
++ = DW_CFA_advance_loc2
;
6638 bfd_put_16 (htab
->elf
.dynobj
, adv
, p
);
6643 *p
++ = DW_CFA_advance_loc4
;
6644 bfd_put_32 (htab
->elf
.dynobj
, adv
, p
);
6647 *p
++ = DW_CFA_register
;
6650 *p
++ = DW_CFA_advance_loc
+ 4;
6651 *p
++ = DW_CFA_restore_extended
;
6654 BFD_ASSERT ((bfd_vma
) ((p
+ 3 - htab
->glink_eh_frame
->contents
) & -4)
6655 == htab
->glink_eh_frame
->size
);
6661 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6662 if it looks like nothing is using them. */
6665 maybe_strip_sdasym (bfd
*output_bfd
, elf_linker_section_t
*lsect
)
6667 struct elf_link_hash_entry
*sda
= lsect
->sym
;
6669 if (sda
!= NULL
&& !sda
->ref_regular
&& sda
->dynindx
== -1)
6673 s
= bfd_get_section_by_name (output_bfd
, lsect
->name
);
6674 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6676 s
= bfd_get_section_by_name (output_bfd
, lsect
->bss_name
);
6677 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6679 sda
->def_regular
= 0;
6680 /* This is somewhat magic. See elf_link_output_extsym. */
6681 sda
->ref_dynamic
= 1;
6682 sda
->forced_local
= 0;
6689 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info
*info
)
6691 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6695 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[0]);
6696 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[1]);
6701 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6704 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6706 if (h
->plt
.plist
!= NULL
6708 && (!h
->pointer_equality_needed
6709 || !h
->ref_regular_nonweak
))
6712 return _bfd_elf_hash_symbol (h
);
6715 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6717 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6718 used for some functions that are allowed to break the ABI). */
6719 static const int shared_stub_entry
[] =
6721 0x7c0802a6, /* mflr 0 */
6722 0x429f0005, /* bcl 20, 31, .Lxxx */
6723 0x7d8802a6, /* mflr 12 */
6724 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6725 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6726 0x7c0803a6, /* mtlr 0 */
6727 0x7d8903a6, /* mtctr 12 */
6728 0x4e800420, /* bctr */
6731 static const int stub_entry
[] =
6733 0x3d800000, /* lis 12,xxx@ha */
6734 0x398c0000, /* addi 12,12,xxx@l */
6735 0x7d8903a6, /* mtctr 12 */
6736 0x4e800420, /* bctr */
6739 struct ppc_elf_relax_info
6741 unsigned int workaround_size
;
6742 unsigned int picfixup_size
;
6745 /* This function implements long branch trampolines, and the ppc476
6746 icache bug workaround. Any section needing trampolines or patch
6747 space for the workaround has its size extended so that we can
6748 add trampolines at the end of the section. */
6751 ppc_elf_relax_section (bfd
*abfd
,
6753 struct bfd_link_info
*link_info
,
6756 struct one_branch_fixup
6758 struct one_branch_fixup
*next
;
6760 /* Final link, can use the symbol offset. For a
6761 relocatable link we use the symbol's index. */
6766 Elf_Internal_Shdr
*symtab_hdr
;
6767 bfd_byte
*contents
= NULL
;
6768 Elf_Internal_Sym
*isymbuf
= NULL
;
6769 Elf_Internal_Rela
*internal_relocs
= NULL
;
6770 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6771 struct one_branch_fixup
*branch_fixups
= NULL
;
6772 struct ppc_elf_relax_info
*relax_info
= NULL
;
6773 unsigned changes
= 0;
6774 bfd_boolean workaround_change
;
6775 struct ppc_elf_link_hash_table
*htab
;
6776 bfd_size_type trampbase
, trampoff
, newsize
, picfixup_size
;
6778 bfd_boolean maybe_pasted
;
6782 /* No need to do anything with non-alloc or non-code sections. */
6783 if ((isec
->flags
& SEC_ALLOC
) == 0
6784 || (isec
->flags
& SEC_CODE
) == 0
6785 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6789 /* We cannot represent the required PIC relocs in the output, so don't
6790 do anything. The linker doesn't support mixing -shared and -r
6792 if (bfd_link_relocatable (link_info
) && bfd_link_pic (link_info
))
6795 htab
= ppc_elf_hash_table (link_info
);
6799 isec
->size
= (isec
->size
+ 3) & -4;
6800 if (isec
->rawsize
== 0)
6801 isec
->rawsize
= isec
->size
;
6802 trampbase
= isec
->size
;
6804 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6805 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6806 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6808 if (htab
->params
->ppc476_workaround
6809 || htab
->params
->pic_fixup
> 0)
6811 if (elf_section_data (isec
)->sec_info
== NULL
)
6813 elf_section_data (isec
)->sec_info
6814 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
6815 if (elf_section_data (isec
)->sec_info
== NULL
)
6818 relax_info
= elf_section_data (isec
)->sec_info
;
6819 trampbase
-= relax_info
->workaround_size
;
6822 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6823 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6824 /* Space for a branch around any trampolines. */
6825 trampoff
= trampbase
;
6826 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
6829 symtab_hdr
= &elf_symtab_hdr (abfd
);
6831 if (htab
->params
->branch_trampolines
6832 || htab
->params
->pic_fixup
> 0)
6834 /* Get a copy of the native relocations. */
6835 if (isec
->reloc_count
!= 0)
6837 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6838 link_info
->keep_memory
);
6839 if (internal_relocs
== NULL
)
6843 got2
= bfd_get_section_by_name (abfd
, ".got2");
6845 irelend
= internal_relocs
+ isec
->reloc_count
;
6846 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6848 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6851 struct one_branch_fixup
*f
;
6852 size_t insn_offset
= 0;
6853 bfd_vma max_branch_offset
= 0, val
;
6856 struct elf_link_hash_entry
*h
;
6857 struct plt_entry
**plist
;
6858 unsigned char sym_type
;
6863 case R_PPC_LOCAL24PC
:
6864 case R_PPC_PLTREL24
:
6865 max_branch_offset
= 1 << 25;
6869 case R_PPC_REL14_BRTAKEN
:
6870 case R_PPC_REL14_BRNTAKEN
:
6871 max_branch_offset
= 1 << 15;
6874 case R_PPC_ADDR16_HA
:
6875 if (htab
->params
->pic_fixup
> 0)
6883 /* Get the value of the symbol referred to by the reloc. */
6885 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6887 /* A local symbol. */
6888 Elf_Internal_Sym
*isym
;
6890 /* Read this BFD's local symbols. */
6891 if (isymbuf
== NULL
)
6893 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6894 if (isymbuf
== NULL
)
6895 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
6896 symtab_hdr
->sh_info
, 0,
6901 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6902 if (isym
->st_shndx
== SHN_UNDEF
)
6903 tsec
= bfd_und_section_ptr
;
6904 else if (isym
->st_shndx
== SHN_ABS
)
6905 tsec
= bfd_abs_section_ptr
;
6906 else if (isym
->st_shndx
== SHN_COMMON
)
6907 tsec
= bfd_com_section_ptr
;
6909 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6911 toff
= isym
->st_value
;
6912 sym_type
= ELF_ST_TYPE (isym
->st_info
);
6916 /* Global symbol handling. */
6919 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6920 h
= elf_sym_hashes (abfd
)[indx
];
6922 while (h
->root
.type
== bfd_link_hash_indirect
6923 || h
->root
.type
== bfd_link_hash_warning
)
6924 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6926 if (h
->root
.type
== bfd_link_hash_defined
6927 || h
->root
.type
== bfd_link_hash_defweak
)
6929 tsec
= h
->root
.u
.def
.section
;
6930 toff
= h
->root
.u
.def
.value
;
6932 else if (h
->root
.type
== bfd_link_hash_undefined
6933 || h
->root
.type
== bfd_link_hash_undefweak
)
6935 tsec
= bfd_und_section_ptr
;
6936 toff
= bfd_link_relocatable (link_info
) ? indx
: 0;
6941 /* If this branch is to __tls_get_addr then we may later
6942 optimise away the call. We won't be needing a long-
6943 branch stub in that case. */
6944 if (bfd_link_executable (link_info
)
6945 && h
== htab
->tls_get_addr
6946 && irel
!= internal_relocs
)
6948 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
6949 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
6950 unsigned int tls_mask
= 0;
6952 /* The previous reloc should be one of R_PPC_TLSGD or
6953 R_PPC_TLSLD, or for older object files, a reloc
6954 on the __tls_get_addr arg setup insn. Get tls
6955 mask bits from the symbol on that reloc. */
6956 if (t_symndx
< symtab_hdr
->sh_info
)
6958 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6960 if (local_got_offsets
!= NULL
)
6962 struct plt_entry
**local_plt
= (struct plt_entry
**)
6963 (local_got_offsets
+ symtab_hdr
->sh_info
);
6964 char *lgot_masks
= (char *)
6965 (local_plt
+ symtab_hdr
->sh_info
);
6966 tls_mask
= lgot_masks
[t_symndx
];
6971 struct elf_link_hash_entry
*th
6972 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
6974 while (th
->root
.type
== bfd_link_hash_indirect
6975 || th
->root
.type
== bfd_link_hash_warning
)
6976 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
6979 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
6982 /* The mask bits tell us if the call will be
6984 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
6985 && (t_rtype
== R_PPC_TLSGD
6986 || t_rtype
== R_PPC_GOT_TLSGD16
6987 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
6989 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
6990 && (t_rtype
== R_PPC_TLSLD
6991 || t_rtype
== R_PPC_GOT_TLSLD16
6992 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
6999 if (r_type
== R_PPC_ADDR16_HA
)
7004 && ppc_elf_hash_entry (h
)->has_addr16_ha
7005 && ppc_elf_hash_entry (h
)->has_addr16_lo
)
7006 picfixup_size
+= 12;
7010 /* The condition here under which we call find_plt_ent must
7011 match that in relocate_section. If we call find_plt_ent here
7012 but not in relocate_section, or vice versa, then the branch
7013 destination used here may be incorrect. */
7017 /* We know is_branch_reloc (r_type) is true. */
7018 if (h
->type
== STT_GNU_IFUNC
7019 || r_type
== R_PPC_PLTREL24
)
7020 plist
= &h
->plt
.plist
;
7022 else if (sym_type
== STT_GNU_IFUNC
7023 && elf_local_got_offsets (abfd
) != NULL
)
7025 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7026 struct plt_entry
**local_plt
= (struct plt_entry
**)
7027 (local_got_offsets
+ symtab_hdr
->sh_info
);
7028 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
7033 struct plt_entry
*ent
;
7035 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (link_info
))
7036 addend
= irel
->r_addend
;
7037 ent
= find_plt_ent (plist
, got2
, addend
);
7040 if (htab
->plt_type
== PLT_NEW
7042 || !htab
->elf
.dynamic_sections_created
7043 || h
->dynindx
== -1)
7046 toff
= ent
->glink_offset
;
7050 tsec
= htab
->elf
.splt
;
7051 toff
= ent
->plt
.offset
;
7056 /* If the branch and target are in the same section, you have
7057 no hope of adding stubs. We'll error out later should the
7062 /* There probably isn't any reason to handle symbols in
7063 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7064 attribute for a code section, and we are only looking at
7065 branches. However, implement it correctly here as a
7066 reference for other target relax_section functions. */
7067 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
7069 /* At this stage in linking, no SEC_MERGE symbol has been
7070 adjusted, so all references to such symbols need to be
7071 passed through _bfd_merged_section_offset. (Later, in
7072 relocate_section, all SEC_MERGE symbols *except* for
7073 section symbols have been adjusted.)
7075 gas may reduce relocations against symbols in SEC_MERGE
7076 sections to a relocation against the section symbol when
7077 the original addend was zero. When the reloc is against
7078 a section symbol we should include the addend in the
7079 offset passed to _bfd_merged_section_offset, since the
7080 location of interest is the original symbol. On the
7081 other hand, an access to "sym+addend" where "sym" is not
7082 a section symbol should not include the addend; Such an
7083 access is presumed to be an offset from "sym"; The
7084 location of interest is just "sym". */
7085 if (sym_type
== STT_SECTION
)
7086 toff
+= irel
->r_addend
;
7089 = _bfd_merged_section_offset (abfd
, &tsec
,
7090 elf_section_data (tsec
)->sec_info
,
7093 if (sym_type
!= STT_SECTION
)
7094 toff
+= irel
->r_addend
;
7096 /* PLTREL24 addends are special. */
7097 else if (r_type
!= R_PPC_PLTREL24
)
7098 toff
+= irel
->r_addend
;
7100 /* Attempted -shared link of non-pic code loses. */
7101 if ((!bfd_link_relocatable (link_info
)
7102 && tsec
== bfd_und_section_ptr
)
7103 || tsec
->output_section
== NULL
7104 || (tsec
->owner
!= NULL
7105 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
7108 roff
= irel
->r_offset
;
7110 /* If the branch is in range, no need to do anything. */
7111 if (tsec
!= bfd_und_section_ptr
7112 && (!bfd_link_relocatable (link_info
)
7113 /* A relocatable link may have sections moved during
7114 final link, so do not presume they remain in range. */
7115 || tsec
->output_section
== isec
->output_section
))
7117 bfd_vma symaddr
, reladdr
;
7119 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7120 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7121 if (symaddr
- reladdr
+ max_branch_offset
7122 < 2 * max_branch_offset
)
7126 /* Look for an existing fixup to this address. */
7127 for (f
= branch_fixups
; f
; f
= f
->next
)
7128 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7134 unsigned long stub_rtype
;
7136 val
= trampoff
- roff
;
7137 if (val
>= max_branch_offset
)
7138 /* Oh dear, we can't reach a trampoline. Don't try to add
7139 one. We'll report an error later. */
7142 if (bfd_link_pic (link_info
))
7144 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7149 size
= 4 * ARRAY_SIZE (stub_entry
);
7152 stub_rtype
= R_PPC_RELAX
;
7153 if (tsec
== htab
->elf
.splt
7154 || tsec
== htab
->glink
)
7156 stub_rtype
= R_PPC_RELAX_PLT
;
7157 if (r_type
== R_PPC_PLTREL24
)
7158 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7161 /* Hijack the old relocation. Since we need two
7162 relocations for this use a "composite" reloc. */
7163 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7165 irel
->r_offset
= trampoff
+ insn_offset
;
7166 if (r_type
== R_PPC_PLTREL24
7167 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7170 /* Record the fixup so we don't do it again this section. */
7171 f
= bfd_malloc (sizeof (*f
));
7172 f
->next
= branch_fixups
;
7175 f
->trampoff
= trampoff
;
7183 val
= f
->trampoff
- roff
;
7184 if (val
>= max_branch_offset
)
7187 /* Nop out the reloc, since we're finalizing things here. */
7188 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7191 /* Get the section contents. */
7192 if (contents
== NULL
)
7194 /* Get cached copy if it exists. */
7195 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7196 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7197 /* Go get them off disk. */
7198 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7202 /* Fix up the existing branch to hit the trampoline. */
7203 hit_addr
= contents
+ roff
;
7207 case R_PPC_LOCAL24PC
:
7208 case R_PPC_PLTREL24
:
7209 t0
= bfd_get_32 (abfd
, hit_addr
);
7211 t0
|= val
& 0x3fffffc;
7212 bfd_put_32 (abfd
, t0
, hit_addr
);
7216 case R_PPC_REL14_BRTAKEN
:
7217 case R_PPC_REL14_BRNTAKEN
:
7218 t0
= bfd_get_32 (abfd
, hit_addr
);
7221 bfd_put_32 (abfd
, t0
, hit_addr
);
7226 while (branch_fixups
!= NULL
)
7228 struct one_branch_fixup
*f
= branch_fixups
;
7229 branch_fixups
= branch_fixups
->next
;
7234 workaround_change
= FALSE
;
7236 if (htab
->params
->ppc476_workaround
7237 && (!bfd_link_relocatable (link_info
)
7238 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7240 bfd_vma addr
, end_addr
;
7241 unsigned int crossings
;
7242 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7244 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7245 end_addr
= addr
+ trampoff
;
7247 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7250 /* Keep space aligned, to ensure the patch code itself does
7251 not cross a page. Don't decrease size calculated on a
7252 previous pass as otherwise we might never settle on a layout. */
7253 newsize
= 15 - ((end_addr
- 1) & 15);
7254 newsize
+= crossings
* 16;
7255 if (relax_info
->workaround_size
< newsize
)
7257 relax_info
->workaround_size
= newsize
;
7258 workaround_change
= TRUE
;
7260 /* Ensure relocate_section is called. */
7261 isec
->flags
|= SEC_RELOC
;
7263 newsize
= trampoff
+ relax_info
->workaround_size
;
7266 if (htab
->params
->pic_fixup
> 0)
7268 picfixup_size
-= relax_info
->picfixup_size
;
7269 if (picfixup_size
!= 0)
7270 relax_info
->picfixup_size
+= picfixup_size
;
7271 newsize
+= relax_info
->picfixup_size
;
7274 if (changes
!= 0 || picfixup_size
!= 0 || workaround_change
)
7275 isec
->size
= newsize
;
7278 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7280 if (! link_info
->keep_memory
)
7284 /* Cache the symbols for elf_link_input_bfd. */
7285 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7289 if (contents
!= NULL
7290 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7292 if (!changes
&& !link_info
->keep_memory
)
7296 /* Cache the section contents for elf_link_input_bfd. */
7297 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7301 changes
+= picfixup_size
;
7304 /* Append sufficient NOP relocs so we can write out relocation
7305 information for the trampolines. */
7306 Elf_Internal_Shdr
*rel_hdr
;
7307 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7308 * sizeof (*new_relocs
));
7313 memcpy (new_relocs
, internal_relocs
,
7314 isec
->reloc_count
* sizeof (*new_relocs
));
7315 for (ix
= changes
; ix
--;)
7317 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7319 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7321 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7322 free (internal_relocs
);
7323 elf_section_data (isec
)->relocs
= new_relocs
;
7324 isec
->reloc_count
+= changes
;
7325 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7326 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7328 else if (internal_relocs
!= NULL
7329 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7330 free (internal_relocs
);
7332 *again
= changes
!= 0 || workaround_change
;
7336 while (branch_fixups
!= NULL
)
7338 struct one_branch_fixup
*f
= branch_fixups
;
7339 branch_fixups
= branch_fixups
->next
;
7342 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7344 if (contents
!= NULL
7345 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7347 if (internal_relocs
!= NULL
7348 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7349 free (internal_relocs
);
7353 /* What to do when ld finds relocations against symbols defined in
7354 discarded sections. */
7357 ppc_elf_action_discarded (asection
*sec
)
7359 if (strcmp (".fixup", sec
->name
) == 0)
7362 if (strcmp (".got2", sec
->name
) == 0)
7365 return _bfd_elf_default_action_discarded (sec
);
7368 /* Fill in the address for a pointer generated in a linker section. */
7371 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7372 elf_linker_section_t
*lsect
,
7373 struct elf_link_hash_entry
*h
,
7375 const Elf_Internal_Rela
*rel
)
7377 elf_linker_section_pointers_t
*linker_section_ptr
;
7379 BFD_ASSERT (lsect
!= NULL
);
7383 /* Handle global symbol. */
7384 struct ppc_elf_link_hash_entry
*eh
;
7386 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7387 BFD_ASSERT (eh
->elf
.def_regular
);
7388 linker_section_ptr
= eh
->linker_section_pointer
;
7392 /* Handle local symbol. */
7393 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7395 BFD_ASSERT (is_ppc_elf (input_bfd
));
7396 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7397 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7400 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7403 BFD_ASSERT (linker_section_ptr
!= NULL
);
7405 /* Offset will always be a multiple of four, so use the bottom bit
7406 as a "written" flag. */
7407 if ((linker_section_ptr
->offset
& 1) == 0)
7409 bfd_put_32 (lsect
->section
->owner
,
7410 relocation
+ linker_section_ptr
->addend
,
7411 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7412 linker_section_ptr
->offset
+= 1;
7415 relocation
= (lsect
->section
->output_section
->vma
7416 + lsect
->section
->output_offset
7417 + linker_section_ptr
->offset
- 1
7418 - SYM_VAL (lsect
->sym
));
7422 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7423 lsect
->name
, (long) relocation
, (long) relocation
);
7429 #define PPC_LO(v) ((v) & 0xffff)
7430 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7431 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7434 write_glink_stub (struct elf_link_hash_entry
*h
, struct plt_entry
*ent
,
7435 asection
*plt_sec
, unsigned char *p
,
7436 struct bfd_link_info
*info
)
7438 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7439 bfd
*output_bfd
= info
->output_bfd
;
7441 unsigned char *end
= p
+ GLINK_ENTRY_SIZE (htab
, h
);
7444 && h
== htab
->tls_get_addr
7445 && !htab
->params
->no_tls_get_addr_opt
)
7447 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
7449 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
7451 bfd_put_32 (output_bfd
, MR_0_3
, p
);
7453 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
7455 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
7457 bfd_put_32 (output_bfd
, BEQLR
, p
);
7459 bfd_put_32 (output_bfd
, MR_3_0
, p
);
7461 bfd_put_32 (output_bfd
, NOP
, p
);
7465 plt
= ((ent
->plt
.offset
& ~1)
7466 + plt_sec
->output_section
->vma
7467 + plt_sec
->output_offset
);
7469 if (bfd_link_pic (info
))
7473 if (ent
->addend
>= 32768)
7475 + ent
->sec
->output_section
->vma
7476 + ent
->sec
->output_offset
);
7477 else if (htab
->elf
.hgot
!= NULL
)
7478 got
= SYM_VAL (htab
->elf
.hgot
);
7482 if (plt
+ 0x8000 < 0x10000)
7483 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7486 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7488 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7493 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7495 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7498 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7500 bfd_put_32 (output_bfd
, BCTR
, p
);
7504 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7509 /* Return true if symbol is defined statically. */
7512 is_static_defined (struct elf_link_hash_entry
*h
)
7514 return ((h
->root
.type
== bfd_link_hash_defined
7515 || h
->root
.type
== bfd_link_hash_defweak
)
7516 && h
->root
.u
.def
.section
!= NULL
7517 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7520 /* If INSN is an opcode that may be used with an @tls operand, return
7521 the transformed insn for TLS optimisation, otherwise return 0. If
7522 REG is non-zero only match an insn with RB or RA equal to REG. */
7525 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7529 if ((insn
& (0x3f << 26)) != 31 << 26)
7532 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7533 rtra
= insn
& ((1 << 26) - (1 << 16));
7534 else if (((insn
>> 16) & 0x1f) == reg
)
7535 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7539 if ((insn
& (0x3ff << 1)) == 266 << 1)
7542 else if ((insn
& (0x1f << 1)) == 23 << 1
7543 && ((insn
& (0x1f << 6)) < 14 << 6
7544 || ((insn
& (0x1f << 6)) >= 16 << 6
7545 && (insn
& (0x1f << 6)) < 24 << 6)))
7546 /* load and store indexed -> dform. */
7547 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7548 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7549 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7550 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7551 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7553 insn
= (58 << 26) | 2;
7560 /* If INSN is an opcode that may be used with an @tprel operand, return
7561 the transformed insn for an undefined weak symbol, ie. with the
7562 thread pointer REG operand removed. Otherwise return 0. */
7565 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7567 if ((insn
& (0x1f << 16)) == reg
<< 16
7568 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7569 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7570 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7571 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7572 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7573 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7574 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7575 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7576 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7577 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7578 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7579 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7580 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7581 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7582 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7583 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7585 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7586 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7588 insn
&= ~(0x1f << 16);
7590 else if ((insn
& (0x1f << 21)) == reg
<< 21
7591 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7592 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7593 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7595 insn
&= ~(0x1f << 21);
7596 insn
|= (insn
& (0x1f << 16)) << 5;
7597 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7598 insn
-= 2 >> 26; /* convert to ori,oris */
7606 is_insn_ds_form (unsigned int insn
)
7608 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7609 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7610 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7611 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7615 is_insn_dq_form (unsigned int insn
)
7617 return ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
7618 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7619 && (insn
& 3) == 1));
7622 /* The RELOCATE_SECTION function is called by the ELF backend linker
7623 to handle the relocations for a section.
7625 The relocs are always passed as Rela structures; if the section
7626 actually uses Rel structures, the r_addend field will always be
7629 This function is responsible for adjust the section contents as
7630 necessary, and (if using Rela relocs and generating a
7631 relocatable output file) adjusting the reloc addend as
7634 This function does not have to worry about setting the reloc
7635 address or the reloc symbol index.
7637 LOCAL_SYMS is a pointer to the swapped in local symbols.
7639 LOCAL_SECTIONS is an array giving the section in the input file
7640 corresponding to the st_shndx field of each local symbol.
7642 The global hash table entry for the global symbols can be found
7643 via elf_sym_hashes (input_bfd).
7645 When generating relocatable output, this function must handle
7646 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7647 going to be the section symbol corresponding to the output
7648 section, which means that the addend must be adjusted
7652 ppc_elf_relocate_section (bfd
*output_bfd
,
7653 struct bfd_link_info
*info
,
7655 asection
*input_section
,
7657 Elf_Internal_Rela
*relocs
,
7658 Elf_Internal_Sym
*local_syms
,
7659 asection
**local_sections
)
7661 Elf_Internal_Shdr
*symtab_hdr
;
7662 struct elf_link_hash_entry
**sym_hashes
;
7663 struct ppc_elf_link_hash_table
*htab
;
7664 Elf_Internal_Rela
*rel
;
7665 Elf_Internal_Rela
*wrel
;
7666 Elf_Internal_Rela
*relend
;
7667 Elf_Internal_Rela outrel
;
7669 bfd_vma
*local_got_offsets
;
7670 bfd_boolean ret
= TRUE
;
7671 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
7672 bfd_boolean is_vxworks_tls
;
7673 unsigned int picfixup_size
= 0;
7674 struct ppc_elf_relax_info
*relax_info
= NULL
;
7677 _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
7678 "%ld relocations%s",
7679 input_bfd
, input_section
,
7680 (long) input_section
->reloc_count
,
7681 (bfd_link_relocatable (info
)) ? " (relocatable)" : "");
7684 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7686 /* Initialize howto table if not already done. */
7687 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7688 ppc_elf_howto_init ();
7690 htab
= ppc_elf_hash_table (info
);
7691 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7692 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7693 sym_hashes
= elf_sym_hashes (input_bfd
);
7694 /* We have to handle relocations in vxworks .tls_vars sections
7695 specially, because the dynamic loader is 'weird'. */
7696 is_vxworks_tls
= (htab
->is_vxworks
&& bfd_link_pic (info
)
7697 && !strcmp (input_section
->output_section
->name
,
7699 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
)
7700 relax_info
= elf_section_data (input_section
)->sec_info
;
7701 rel
= wrel
= relocs
;
7702 relend
= relocs
+ input_section
->reloc_count
;
7703 for (; rel
< relend
; wrel
++, rel
++)
7705 enum elf_ppc_reloc_type r_type
;
7707 bfd_reloc_status_type r
;
7708 Elf_Internal_Sym
*sym
;
7710 struct elf_link_hash_entry
*h
;
7711 const char *sym_name
;
7712 reloc_howto_type
*howto
;
7713 unsigned long r_symndx
;
7715 bfd_vma branch_bit
, from
;
7716 bfd_boolean unresolved_reloc
;
7718 unsigned int tls_type
, tls_mask
, tls_gd
;
7719 struct plt_entry
**ifunc
;
7720 struct reloc_howto_struct alt_howto
;
7723 r_type
= ELF32_R_TYPE (rel
->r_info
);
7727 unresolved_reloc
= FALSE
;
7729 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7731 if (r_symndx
< symtab_hdr
->sh_info
)
7733 sym
= local_syms
+ r_symndx
;
7734 sec
= local_sections
[r_symndx
];
7735 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7737 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7741 bfd_boolean ignored
;
7743 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7744 r_symndx
, symtab_hdr
, sym_hashes
,
7746 unresolved_reloc
, warned
, ignored
);
7748 sym_name
= h
->root
.root
.string
;
7751 if (sec
!= NULL
&& discarded_section (sec
))
7753 /* For relocs against symbols from removed linkonce sections,
7754 or sections discarded by a linker script, we just want the
7755 section contents zeroed. Avoid any special processing. */
7757 if (r_type
< R_PPC_max
)
7758 howto
= ppc_elf_howto_table
[r_type
];
7760 _bfd_clear_contents (howto
, input_bfd
, input_section
,
7761 contents
+ rel
->r_offset
);
7762 wrel
->r_offset
= rel
->r_offset
;
7766 /* For ld -r, remove relocations in debug sections against
7767 symbols defined in discarded sections. Not done for
7768 non-debug to preserve relocs in .eh_frame which the
7769 eh_frame editing code expects to be present. */
7770 if (bfd_link_relocatable (info
)
7771 && (input_section
->flags
& SEC_DEBUGGING
))
7777 if (bfd_link_relocatable (info
))
7780 && r_type
== R_PPC_PLTREL24
7781 && rel
->r_addend
!= 0)
7783 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7784 addend specifies the GOT pointer offset within .got2. */
7785 rel
->r_addend
+= got2
->output_offset
;
7787 if (r_type
!= R_PPC_RELAX_PLT
7788 && r_type
!= R_PPC_RELAX_PLTREL24
7789 && r_type
!= R_PPC_RELAX
)
7793 /* TLS optimizations. Replace instruction sequences and relocs
7794 based on information we collected in tls_optimize. We edit
7795 RELOCS so that --emit-relocs will output something sensible
7796 for the final instruction stream. */
7800 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7801 else if (local_got_offsets
!= NULL
)
7803 struct plt_entry
**local_plt
;
7806 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7807 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7808 tls_mask
= lgot_masks
[r_symndx
];
7811 /* Ensure reloc mapping code below stays sane. */
7812 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7813 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7814 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7815 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7816 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7817 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7818 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7819 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
7826 case R_PPC_GOT_TPREL16
:
7827 case R_PPC_GOT_TPREL16_LO
:
7828 if ((tls_mask
& TLS_TLS
) != 0
7829 && (tls_mask
& TLS_TPREL
) == 0)
7833 insn
= bfd_get_32 (input_bfd
,
7834 contents
+ rel
->r_offset
- d_offset
);
7836 insn
|= 0x3c020000; /* addis 0,2,0 */
7837 bfd_put_32 (input_bfd
, insn
,
7838 contents
+ rel
->r_offset
- d_offset
);
7839 r_type
= R_PPC_TPREL16_HA
;
7840 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7845 if ((tls_mask
& TLS_TLS
) != 0
7846 && (tls_mask
& TLS_TPREL
) == 0)
7850 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7851 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
7854 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
7855 r_type
= R_PPC_TPREL16_LO
;
7856 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7858 /* Was PPC_TLS which sits on insn boundary, now
7859 PPC_TPREL16_LO which is at low-order half-word. */
7860 rel
->r_offset
+= d_offset
;
7864 case R_PPC_GOT_TLSGD16_HI
:
7865 case R_PPC_GOT_TLSGD16_HA
:
7866 tls_gd
= TLS_TPRELGD
;
7867 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7871 case R_PPC_GOT_TLSLD16_HI
:
7872 case R_PPC_GOT_TLSLD16_HA
:
7873 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7876 if ((tls_mask
& tls_gd
) != 0)
7877 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7878 + R_PPC_GOT_TPREL16
);
7881 rel
->r_offset
-= d_offset
;
7882 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
7883 r_type
= R_PPC_NONE
;
7885 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7889 case R_PPC_GOT_TLSGD16
:
7890 case R_PPC_GOT_TLSGD16_LO
:
7891 tls_gd
= TLS_TPRELGD
;
7892 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7896 case R_PPC_GOT_TLSLD16
:
7897 case R_PPC_GOT_TLSLD16_LO
:
7898 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7900 unsigned int insn1
, insn2
;
7904 offset
= (bfd_vma
) -1;
7905 /* If not using the newer R_PPC_TLSGD/LD to mark
7906 __tls_get_addr calls, we must trust that the call
7907 stays with its arg setup insns, ie. that the next
7908 reloc is the __tls_get_addr call associated with
7909 the current reloc. Edit both insns. */
7910 if (input_section
->has_tls_get_addr_call
7912 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
7913 htab
->tls_get_addr
))
7914 offset
= rel
[1].r_offset
;
7915 /* We read the low GOT_TLS insn because we need to keep
7916 the destination reg. It may be something other than
7917 the usual r3, and moved to r3 before the call by
7918 intervening code. */
7919 insn1
= bfd_get_32 (input_bfd
,
7920 contents
+ rel
->r_offset
- d_offset
);
7921 if ((tls_mask
& tls_gd
) != 0)
7924 insn1
&= (0x1f << 21) | (0x1f << 16);
7925 insn1
|= 32 << 26; /* lwz */
7926 if (offset
!= (bfd_vma
) -1)
7928 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7929 insn2
= 0x7c631214; /* add 3,3,2 */
7930 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
7932 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7933 + R_PPC_GOT_TPREL16
);
7934 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7939 insn1
&= 0x1f << 21;
7940 insn1
|= 0x3c020000; /* addis r,2,0 */
7943 /* Was an LD reloc. */
7945 r_symndx
< symtab_hdr
->sh_info
;
7947 if (local_sections
[r_symndx
] == sec
)
7949 if (r_symndx
>= symtab_hdr
->sh_info
)
7950 r_symndx
= STN_UNDEF
;
7951 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7952 if (r_symndx
!= STN_UNDEF
)
7953 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7954 + sec
->output_offset
7955 + sec
->output_section
->vma
);
7957 r_type
= R_PPC_TPREL16_HA
;
7958 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7959 if (offset
!= (bfd_vma
) -1)
7961 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7962 rel
[1].r_offset
= offset
+ d_offset
;
7963 rel
[1].r_addend
= rel
->r_addend
;
7964 insn2
= 0x38630000; /* addi 3,3,0 */
7965 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
7968 bfd_put_32 (input_bfd
, insn1
,
7969 contents
+ rel
->r_offset
- d_offset
);
7972 /* We changed the symbol on an LD reloc. Start over
7973 in order to get h, sym, sec etc. right. */
7980 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
7981 && rel
+ 1 < relend
)
7984 bfd_vma offset
= rel
->r_offset
;
7986 if ((tls_mask
& TLS_TPRELGD
) != 0)
7989 r_type
= R_PPC_NONE
;
7990 insn2
= 0x7c631214; /* add 3,3,2 */
7995 r_type
= R_PPC_TPREL16_LO
;
7996 rel
->r_offset
+= d_offset
;
7997 insn2
= 0x38630000; /* addi 3,3,0 */
7999 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8000 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
8001 /* Zap the reloc on the _tls_get_addr call too. */
8002 BFD_ASSERT (offset
== rel
[1].r_offset
);
8003 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8008 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
8009 && rel
+ 1 < relend
)
8014 r_symndx
< symtab_hdr
->sh_info
;
8016 if (local_sections
[r_symndx
] == sec
)
8018 if (r_symndx
>= symtab_hdr
->sh_info
)
8019 r_symndx
= STN_UNDEF
;
8020 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8021 if (r_symndx
!= STN_UNDEF
)
8022 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8023 + sec
->output_offset
8024 + sec
->output_section
->vma
);
8026 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8027 rel
->r_offset
+= d_offset
;
8028 insn2
= 0x38630000; /* addi 3,3,0 */
8029 bfd_put_32 (input_bfd
, insn2
,
8030 contents
+ rel
->r_offset
- d_offset
);
8031 /* Zap the reloc on the _tls_get_addr call too. */
8032 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
8033 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8039 /* Handle other relocations that tweak non-addend part of insn. */
8046 /* Branch taken prediction relocations. */
8047 case R_PPC_ADDR14_BRTAKEN
:
8048 case R_PPC_REL14_BRTAKEN
:
8049 branch_bit
= BRANCH_PREDICT_BIT
;
8052 /* Branch not taken prediction relocations. */
8053 case R_PPC_ADDR14_BRNTAKEN
:
8054 case R_PPC_REL14_BRNTAKEN
:
8058 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
8059 insn
&= ~BRANCH_PREDICT_BIT
;
8062 from
= (rel
->r_offset
8063 + input_section
->output_offset
8064 + input_section
->output_section
->vma
);
8066 /* Invert 'y' bit if not the default. */
8067 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
8068 insn
^= BRANCH_PREDICT_BIT
;
8070 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
8075 if (ELIMINATE_COPY_RELOCS
8079 && ppc_elf_hash_entry (h
)->has_addr16_ha
8080 && ppc_elf_hash_entry (h
)->has_addr16_lo
8081 && htab
->params
->pic_fixup
> 0)
8083 /* Convert lis;addi or lis;load/store accessing a protected
8084 variable defined in a shared library to PIC. */
8087 if (r_type
== R_PPC_ADDR16_HA
)
8089 insn
= bfd_get_32 (input_bfd
,
8090 contents
+ rel
->r_offset
- d_offset
);
8091 if ((insn
& (0x3f << 26)) == (15u << 26)
8092 && (insn
& (0x1f << 16)) == 0 /* lis */)
8098 p
= (contents
+ input_section
->size
8099 - relax_info
->workaround_size
8100 - relax_info
->picfixup_size
8102 off
= (p
- contents
) - (rel
->r_offset
- d_offset
);
8103 if (off
> 0x1fffffc || (off
& 3) != 0)
8104 info
->callbacks
->einfo
8105 (_("%H: fixup branch overflow\n"),
8106 input_bfd
, input_section
, rel
->r_offset
);
8108 bfd_put_32 (input_bfd
, B
| off
,
8109 contents
+ rel
->r_offset
- d_offset
);
8110 got_addr
= (htab
->elf
.sgot
->output_section
->vma
8111 + htab
->elf
.sgot
->output_offset
8112 + (h
->got
.offset
& ~1));
8113 wrel
->r_offset
= (p
- contents
) + d_offset
;
8114 wrel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_HA
);
8115 wrel
->r_addend
= got_addr
;
8117 insn
|= ((unsigned int) (got_addr
+ 0x8000) >> 16) & 0xffff;
8118 bfd_put_32 (input_bfd
, insn
, p
);
8120 /* Convert lis to lwz, loading address from GOT. */
8122 insn
^= (32u ^ 15u) << 26;
8123 insn
|= (insn
& (0x1f << 21)) >> 5;
8124 insn
|= got_addr
& 0xffff;
8125 bfd_put_32 (input_bfd
, insn
, p
+ 4);
8127 bfd_put_32 (input_bfd
, B
| ((-4 - off
) & 0x3ffffff), p
+ 8);
8128 picfixup_size
+= 12;
8130 /* Use one of the spare relocs, so --emit-relocs
8131 output is reasonable. */
8132 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8134 rel
->r_offset
= wrel
[-1].r_offset
+ 4;
8135 rel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_LO
);
8136 rel
->r_addend
= wrel
[-1].r_addend
;
8138 /* Continue on as if we had a got reloc, to output
8140 r_type
= R_PPC_GOT16_LO
;
8144 /* xgettext:c-format */
8145 (_("%pB(%pA+%#" PRIx64
"): error: "
8146 "%s with unexpected instruction %#x"),
8147 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
8148 "R_PPC_ADDR16_HA", insn
);
8150 else if (r_type
== R_PPC_ADDR16_LO
)
8152 insn
= bfd_get_32 (input_bfd
,
8153 contents
+ rel
->r_offset
- d_offset
);
8154 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8155 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8156 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8157 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8158 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8159 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8160 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8161 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8162 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8163 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8164 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8165 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8166 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8167 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8168 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8170 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8171 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
8173 /* Arrange to apply the reloc addend, if any. */
8175 unresolved_reloc
= FALSE
;
8176 rel
->r_info
= ELF32_R_INFO (0, r_type
);
8180 /* xgettext:c-format */
8181 (_("%pB(%pA+%#" PRIx64
"): error: "
8182 "%s with unexpected instruction %#x"),
8183 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
8184 "R_PPC_ADDR16_LO", insn
);
8189 if (!htab
->is_vxworks
)
8191 struct plt_entry
*ent
;
8195 if (h
->type
== STT_GNU_IFUNC
)
8196 ifunc
= &h
->plt
.plist
;
8198 else if (local_got_offsets
!= NULL
8199 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8201 struct plt_entry
**local_plt
;
8203 local_plt
= (struct plt_entry
**) (local_got_offsets
8204 + symtab_hdr
->sh_info
);
8205 ifunc
= local_plt
+ r_symndx
;
8210 && (!bfd_link_pic (info
)
8211 || is_branch_reloc (r_type
)))
8214 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
8215 addend
= rel
->r_addend
;
8216 ent
= find_plt_ent (ifunc
, got2
, addend
);
8220 if (bfd_link_pic (info
)
8222 && htab
->plt_type
!= PLT_NEW
8223 && (!htab
->elf
.dynamic_sections_created
8225 || h
->dynindx
== -1))
8227 /* Uh oh, we are going to create a pic glink stub
8228 for an ifunc (here for h == NULL and later in
8229 finish_dynamic_symbol for h != NULL), and
8230 apparently are using code compiled with
8231 -mbss-plt. The difficulty is that -mbss-plt code
8232 gives no indication via a magic PLTREL24 addend
8233 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8234 is pointing into a .got2 section (and how far
8236 info
->callbacks
->einfo
8237 /* xgettext:c-format */
8238 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8239 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
8241 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
8243 Elf_Internal_Rela rela
;
8246 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
8247 + htab
->elf
.iplt
->output_offset
8249 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8250 rela
.r_addend
= relocation
;
8251 loc
= htab
->elf
.irelplt
->contents
;
8252 loc
+= (htab
->elf
.irelplt
->reloc_count
++
8253 * sizeof (Elf32_External_Rela
));
8254 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8255 htab
->local_ifunc_resolver
= 1;
8257 ent
->plt
.offset
|= 1;
8259 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
8261 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
8262 + ent
->glink_offset
);
8264 write_glink_stub (NULL
, ent
, htab
->elf
.iplt
, p
, info
);
8265 ent
->glink_offset
|= 1;
8268 unresolved_reloc
= FALSE
;
8269 if (htab
->plt_type
== PLT_NEW
8270 || !htab
->elf
.dynamic_sections_created
8272 || h
->dynindx
== -1)
8273 relocation
= (htab
->glink
->output_section
->vma
8274 + htab
->glink
->output_offset
8275 + (ent
->glink_offset
& ~1));
8277 relocation
= (htab
->elf
.splt
->output_section
->vma
8278 + htab
->elf
.splt
->output_offset
8283 addend
= rel
->r_addend
;
8285 if (r_type
< R_PPC_max
)
8286 howto
= ppc_elf_howto_table
[r_type
];
8293 case R_PPC_TPREL16_HA
:
8294 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
8296 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
8297 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8298 if ((insn
& ((0x3f << 26) | 0x1f << 16))
8299 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8300 /* xgettext:c-format */
8301 info
->callbacks
->minfo
8302 (_("%H: warning: %s unexpected insn %#x.\n"),
8303 input_bfd
, input_section
, rel
->r_offset
, howto
->name
, insn
);
8305 bfd_put_32 (input_bfd
, NOP
, p
);
8309 case R_PPC_TPREL16_LO
:
8310 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
8312 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
8313 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8314 insn
&= ~(0x1f << 16);
8316 bfd_put_32 (input_bfd
, insn
, p
);
8325 /* xgettext:c-format */
8326 _bfd_error_handler (_("%pB: %s unsupported"),
8327 input_bfd
, howto
->name
);
8329 bfd_set_error (bfd_error_bad_value
);
8337 case R_PPC_EMB_MRKREF
:
8338 case R_PPC_GNU_VTINHERIT
:
8339 case R_PPC_GNU_VTENTRY
:
8342 /* GOT16 relocations. Like an ADDR16 using the symbol's
8343 address in the GOT as relocation value instead of the
8344 symbol's value itself. Also, create a GOT entry for the
8345 symbol and put the symbol value there. */
8346 case R_PPC_GOT_TLSGD16
:
8347 case R_PPC_GOT_TLSGD16_LO
:
8348 case R_PPC_GOT_TLSGD16_HI
:
8349 case R_PPC_GOT_TLSGD16_HA
:
8350 tls_type
= TLS_TLS
| TLS_GD
;
8353 case R_PPC_GOT_TLSLD16
:
8354 case R_PPC_GOT_TLSLD16_LO
:
8355 case R_PPC_GOT_TLSLD16_HI
:
8356 case R_PPC_GOT_TLSLD16_HA
:
8357 tls_type
= TLS_TLS
| TLS_LD
;
8360 case R_PPC_GOT_TPREL16
:
8361 case R_PPC_GOT_TPREL16_LO
:
8362 case R_PPC_GOT_TPREL16_HI
:
8363 case R_PPC_GOT_TPREL16_HA
:
8364 tls_type
= TLS_TLS
| TLS_TPREL
;
8367 case R_PPC_GOT_DTPREL16
:
8368 case R_PPC_GOT_DTPREL16_LO
:
8369 case R_PPC_GOT_DTPREL16_HI
:
8370 case R_PPC_GOT_DTPREL16_HA
:
8371 tls_type
= TLS_TLS
| TLS_DTPREL
;
8375 case R_PPC_GOT16_LO
:
8376 case R_PPC_GOT16_HI
:
8377 case R_PPC_GOT16_HA
:
8381 /* Relocation is to the entry for this symbol in the global
8387 if (htab
->elf
.sgot
== NULL
)
8391 if (tls_type
== (TLS_TLS
| TLS_LD
)
8393 || !h
->def_dynamic
))
8394 offp
= &htab
->tlsld_got
.offset
;
8397 if (!htab
->elf
.dynamic_sections_created
8399 || SYMBOL_REFERENCES_LOCAL (info
, h
)
8400 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8401 /* This is actually a static link, or it is a
8402 -Bsymbolic link and the symbol is defined
8403 locally, or the symbol was forced to be local
8404 because of a version file. */
8409 unresolved_reloc
= FALSE
;
8411 offp
= &h
->got
.offset
;
8415 if (local_got_offsets
== NULL
)
8417 offp
= &local_got_offsets
[r_symndx
];
8420 /* The offset must always be a multiple of 4. We use the
8421 least significant bit to record whether we have already
8422 processed this entry. */
8428 unsigned int tls_m
= (tls_mask
8429 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8430 | TLS_TPREL
| TLS_TPRELGD
));
8432 if (offp
== &htab
->tlsld_got
.offset
)
8438 /* We might have multiple got entries for this sym.
8439 Initialize them all. */
8444 if ((tls_m
& TLS_LD
) != 0)
8446 tls_ty
= TLS_TLS
| TLS_LD
;
8449 else if ((tls_m
& TLS_GD
) != 0)
8451 tls_ty
= TLS_TLS
| TLS_GD
;
8454 else if ((tls_m
& TLS_DTPREL
) != 0)
8456 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8457 tls_m
&= ~TLS_DTPREL
;
8459 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8461 tls_ty
= TLS_TLS
| TLS_TPREL
;
8465 /* Generate relocs for the dynamic linker. */
8467 || (bfd_link_pic (info
)
8469 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)
8470 || offp
== &htab
->tlsld_got
.offset
)
8471 && !(tls_ty
== (TLS_TLS
| TLS_TPREL
)
8472 && bfd_link_executable (info
)
8473 && SYMBOL_REFERENCES_LOCAL (info
, h
))))
8475 asection
*rsec
= htab
->elf
.srelgot
;
8480 rsec
= htab
->elf
.irelplt
;
8482 htab
->local_ifunc_resolver
= 1;
8483 else if (is_static_defined (h
))
8484 htab
->maybe_local_ifunc_resolver
= 1;
8486 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
8487 + htab
->elf
.sgot
->output_offset
8489 outrel
.r_addend
= 0;
8490 if (tls_ty
& (TLS_LD
| TLS_GD
))
8492 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8493 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8495 loc
= rsec
->contents
;
8496 loc
+= (rsec
->reloc_count
++
8497 * sizeof (Elf32_External_Rela
));
8498 bfd_elf32_swap_reloca_out (output_bfd
,
8500 outrel
.r_offset
+= 4;
8502 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8505 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8506 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8507 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8508 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8510 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8511 else if (ifunc
!= NULL
)
8512 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8514 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8515 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8517 outrel
.r_addend
+= relocation
;
8518 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8520 if (htab
->elf
.tls_sec
== NULL
)
8521 outrel
.r_addend
= 0;
8523 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8526 loc
= rsec
->contents
;
8527 loc
+= (rsec
->reloc_count
++
8528 * sizeof (Elf32_External_Rela
));
8529 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8532 /* Init the .got section contents if we're not
8533 emitting a reloc. */
8536 bfd_vma value
= relocation
;
8540 if (htab
->elf
.tls_sec
== NULL
)
8544 if (tls_ty
& TLS_LD
)
8547 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8548 if (tls_ty
& TLS_TPREL
)
8549 value
+= DTP_OFFSET
- TP_OFFSET
;
8552 if (tls_ty
& (TLS_LD
| TLS_GD
))
8554 bfd_put_32 (input_bfd
, value
,
8555 htab
->elf
.sgot
->contents
+ off
+ 4);
8559 bfd_put_32 (input_bfd
, value
,
8560 htab
->elf
.sgot
->contents
+ off
);
8564 if (tls_ty
& (TLS_LD
| TLS_GD
))
8573 if (off
>= (bfd_vma
) -2)
8576 if ((tls_type
& TLS_TLS
) != 0)
8578 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8580 if ((tls_mask
& TLS_LD
) != 0
8582 || !h
->def_dynamic
))
8584 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8586 if ((tls_mask
& TLS_GD
) != 0)
8588 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8590 if ((tls_mask
& TLS_DTPREL
) != 0)
8597 /* If here for a picfixup, we're done. */
8598 if (r_type
!= ELF32_R_TYPE (rel
->r_info
))
8601 relocation
= (htab
->elf
.sgot
->output_section
->vma
8602 + htab
->elf
.sgot
->output_offset
8604 - SYM_VAL (htab
->elf
.hgot
));
8606 /* Addends on got relocations don't make much sense.
8607 x+off@got is actually x@got+off, and since the got is
8608 generated by a hash table traversal, the value in the
8609 got at entry m+n bears little relation to the entry m. */
8611 info
->callbacks
->einfo
8612 /* xgettext:c-format */
8613 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8614 input_bfd
, input_section
, rel
->r_offset
,
8620 /* Relocations that need no special processing. */
8621 case R_PPC_LOCAL24PC
:
8622 /* It makes no sense to point a local relocation
8623 at a symbol not in this object. */
8624 if (unresolved_reloc
)
8626 (*info
->callbacks
->undefined_symbol
) (info
,
8627 h
->root
.root
.string
,
8634 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
&& bfd_link_pic (info
))
8636 /* @local on an ifunc does not really make sense since
8637 the ifunc resolver can take you anywhere. More
8638 seriously, calls to ifuncs must go through a plt call
8639 stub, and for pic the plt call stubs uses r30 to
8640 access the PLT. The problem is that a call that is
8641 local won't have the +32k reloc addend trick marking
8642 -fPIC code, so the linker won't know whether r30 is
8643 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8644 /* xgettext:c-format */
8645 info
->callbacks
->einfo (_("%X%H: @local call to ifunc %s\n"),
8646 input_bfd
, input_section
, rel
->r_offset
,
8647 h
->root
.root
.string
);
8651 case R_PPC_DTPREL16
:
8652 case R_PPC_DTPREL16_LO
:
8653 case R_PPC_DTPREL16_HI
:
8654 case R_PPC_DTPREL16_HA
:
8655 if (htab
->elf
.tls_sec
!= NULL
)
8656 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8659 /* Relocations that may need to be propagated if this is a shared
8662 case R_PPC_TPREL16_LO
:
8663 case R_PPC_TPREL16_HI
:
8664 case R_PPC_TPREL16_HA
:
8666 && h
->root
.type
== bfd_link_hash_undefweak
8667 && h
->dynindx
== -1)
8669 /* Make this relocation against an undefined weak symbol
8670 resolve to zero. This is really just a tweak, since
8671 code using weak externs ought to check that they are
8672 defined before using them. */
8673 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8674 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8675 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8677 bfd_put_32 (input_bfd
, insn
, p
);
8680 if (htab
->elf
.tls_sec
!= NULL
)
8681 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8682 /* The TPREL16 relocs shouldn't really be used in shared
8683 libs or with non-local symbols as that will result in
8684 DT_TEXTREL being set, but support them anyway. */
8688 if (htab
->elf
.tls_sec
!= NULL
)
8689 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8692 case R_PPC_DTPREL32
:
8693 if (htab
->elf
.tls_sec
!= NULL
)
8694 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8697 case R_PPC_DTPMOD32
:
8703 case R_PPC_REL16_LO
:
8704 case R_PPC_REL16_HI
:
8705 case R_PPC_REL16_HA
:
8706 case R_PPC_REL16DX_HA
:
8710 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8716 case R_PPC_ADDR16_LO
:
8717 case R_PPC_ADDR16_HI
:
8718 case R_PPC_ADDR16_HA
:
8723 case R_PPC_VLE_REL8
:
8724 case R_PPC_VLE_REL15
:
8725 case R_PPC_VLE_REL24
:
8728 case R_PPC_REL14_BRTAKEN
:
8729 case R_PPC_REL14_BRNTAKEN
:
8730 /* If these relocations are not to a named symbol, they can be
8731 handled right here, no need to bother the dynamic linker. */
8732 if (SYMBOL_CALLS_LOCAL (info
, h
)
8733 || h
== htab
->elf
.hgot
)
8739 case R_PPC_ADDR14_BRTAKEN
:
8740 case R_PPC_ADDR14_BRNTAKEN
:
8741 if (h
!= NULL
&& !bfd_link_pic (info
))
8746 if ((input_section
->flags
& SEC_ALLOC
) == 0
8750 if (bfd_link_pic (info
)
8752 || ppc_elf_hash_entry (h
)->dyn_relocs
!= NULL
)
8753 && ((h
!= NULL
&& pc_dynrelocs (h
))
8754 || must_be_dyn_reloc (info
, r_type
)))
8756 && ppc_elf_hash_entry (h
)->dyn_relocs
!= NULL
))
8764 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8765 "create relocation for %s\n",
8766 (h
&& h
->root
.root
.string
8767 ? h
->root
.root
.string
: "<unknown>"));
8770 /* When generating a shared object, these relocations
8771 are copied into the output file to be resolved at run
8774 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8777 if (outrel
.r_offset
== (bfd_vma
) -1
8778 || outrel
.r_offset
== (bfd_vma
) -2)
8779 skip
= (int) outrel
.r_offset
;
8780 outrel
.r_offset
+= (input_section
->output_section
->vma
8781 + input_section
->output_offset
);
8784 memset (&outrel
, 0, sizeof outrel
);
8785 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8788 BFD_ASSERT (indx
!= -1);
8789 unresolved_reloc
= FALSE
;
8790 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8791 outrel
.r_addend
= rel
->r_addend
;
8795 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8797 if (r_type
!= R_PPC_ADDR32
)
8801 /* If we get here when building a static
8802 executable, then the libc startup function
8803 responsible for applying indirect function
8804 relocations is going to complain about
8806 If we get here when building a dynamic
8807 executable, it will be because we have
8808 a text relocation. The dynamic loader
8809 will set the text segment writable and
8810 non-executable to apply text relocations.
8811 So we'll segfault when trying to run the
8812 indirection function to resolve the reloc. */
8813 info
->callbacks
->einfo
8814 /* xgettext:c-format */
8815 (_("%H: relocation %s for indirect "
8816 "function %s unsupported\n"),
8817 input_bfd
, input_section
, rel
->r_offset
,
8822 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8824 else if (sec
== NULL
|| sec
->owner
== NULL
)
8826 bfd_set_error (bfd_error_bad_value
);
8833 /* We are turning this relocation into one
8834 against a section symbol. It would be
8835 proper to subtract the symbol's value,
8836 osec->vma, from the emitted reloc addend,
8837 but ld.so expects buggy relocs.
8838 FIXME: Why not always use a zero index? */
8839 osec
= sec
->output_section
;
8840 indx
= elf_section_data (osec
)->dynindx
;
8843 osec
= htab
->elf
.text_index_section
;
8844 indx
= elf_section_data (osec
)->dynindx
;
8846 BFD_ASSERT (indx
!= 0);
8849 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8850 indx
, osec
->name
, osec
->flags
,
8851 h
->root
.root
.string
);
8855 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8857 else if (ifunc
!= NULL
)
8858 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8860 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8863 sreloc
= elf_section_data (input_section
)->sreloc
;
8866 sreloc
= htab
->elf
.irelplt
;
8868 htab
->local_ifunc_resolver
= 1;
8869 else if (is_static_defined (h
))
8870 htab
->maybe_local_ifunc_resolver
= 1;
8875 loc
= sreloc
->contents
;
8876 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8877 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8882 /* This reloc will be computed at runtime. Clear the memory
8883 so that it contains a predictable value for prelink. */
8886 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
8893 case R_PPC_RELAX_PLT
:
8894 case R_PPC_RELAX_PLTREL24
:
8897 struct plt_entry
*ent
;
8898 bfd_vma got2_addend
= 0;
8900 if (r_type
== R_PPC_RELAX_PLTREL24
)
8902 if (bfd_link_pic (info
))
8903 got2_addend
= addend
;
8906 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
8907 if (htab
->plt_type
== PLT_NEW
)
8908 relocation
= (htab
->glink
->output_section
->vma
8909 + htab
->glink
->output_offset
8910 + ent
->glink_offset
);
8912 relocation
= (htab
->elf
.splt
->output_section
->vma
8913 + htab
->elf
.splt
->output_offset
8922 size_t insn_offset
= rel
->r_offset
;
8925 if (bfd_link_pic (info
))
8927 relocation
-= (input_section
->output_section
->vma
8928 + input_section
->output_offset
8929 + rel
->r_offset
- 4);
8930 stub
= shared_stub_entry
;
8931 bfd_put_32 (input_bfd
, stub
[0], contents
+ insn_offset
- 12);
8932 bfd_put_32 (input_bfd
, stub
[1], contents
+ insn_offset
- 8);
8933 bfd_put_32 (input_bfd
, stub
[2], contents
+ insn_offset
- 4);
8935 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
8940 size
= ARRAY_SIZE (stub_entry
);
8943 relocation
+= addend
;
8944 if (bfd_link_relocatable (info
))
8947 /* First insn is HA, second is LO. */
8949 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
8950 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8954 insn
|= relocation
& 0xffff;
8955 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8963 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8967 /* Rewrite the reloc and convert one of the trailing nop
8968 relocs to describe this relocation. */
8969 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
8970 /* The relocs are at the bottom 2 bytes */
8971 wrel
->r_offset
= rel
->r_offset
+ d_offset
;
8972 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
8973 wrel
->r_addend
= rel
->r_addend
;
8974 memmove (wrel
+ 1, wrel
, (relend
- wrel
- 1) * sizeof (*wrel
));
8976 wrel
->r_offset
+= 4;
8977 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
8981 /* Indirect .sdata relocation. */
8982 case R_PPC_EMB_SDAI16
:
8983 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
8984 if (!is_static_defined (htab
->sdata
[0].sym
))
8986 unresolved_reloc
= TRUE
;
8990 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
8991 h
, relocation
, rel
);
8995 /* Indirect .sdata2 relocation. */
8996 case R_PPC_EMB_SDA2I16
:
8997 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
8998 if (!is_static_defined (htab
->sdata
[1].sym
))
9000 unresolved_reloc
= TRUE
;
9004 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
9005 h
, relocation
, rel
);
9009 /* Handle the TOC16 reloc. We want to use the offset within the .got
9010 section, not the actual VMA. This is appropriate when generating
9011 an embedded ELF object, for which the .got section acts like the
9012 AIX .toc section. */
9013 case R_PPC_TOC16
: /* phony GOT16 relocations */
9014 if (sec
== NULL
|| sec
->output_section
== NULL
)
9016 unresolved_reloc
= TRUE
;
9019 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
9021 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
9024 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
9027 case R_PPC_PLTREL24
:
9028 if (h
!= NULL
&& ifunc
== NULL
)
9030 struct plt_entry
*ent
;
9032 ent
= find_plt_ent (&h
->plt
.plist
, got2
,
9033 bfd_link_pic (info
) ? addend
: 0);
9035 || htab
->elf
.splt
== NULL
)
9037 /* We didn't make a PLT entry for this symbol. This
9038 happens when statically linking PIC code, or when
9039 using -Bsymbolic. */
9043 /* Relocation is to the entry for this symbol in the
9044 procedure linkage table. */
9045 unresolved_reloc
= FALSE
;
9046 if (htab
->plt_type
== PLT_NEW
)
9047 relocation
= (htab
->glink
->output_section
->vma
9048 + htab
->glink
->output_offset
9049 + ent
->glink_offset
);
9051 relocation
= (htab
->elf
.splt
->output_section
->vma
9052 + htab
->elf
.splt
->output_offset
9057 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9058 addend specifies the GOT pointer offset within .got2.
9059 Don't apply it to the relocation field. */
9063 /* Relocate against _SDA_BASE_. */
9064 case R_PPC_SDAREL16
:
9067 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
9070 || sec
->output_section
== NULL
9071 || !is_static_defined (sda
))
9073 unresolved_reloc
= TRUE
;
9076 addend
-= SYM_VAL (sda
);
9078 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9079 if (!(strcmp (name
, ".sdata") == 0
9080 || strcmp (name
, ".sbss") == 0))
9083 /* xgettext:c-format */
9084 (_("%pB: the target (%s) of a %s relocation is "
9085 "in the wrong output section (%s)"),
9094 /* Relocate against _SDA2_BASE_. */
9095 case R_PPC_EMB_SDA2REL
:
9098 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
9101 || sec
->output_section
== NULL
9102 || !is_static_defined (sda
))
9104 unresolved_reloc
= TRUE
;
9107 addend
-= SYM_VAL (sda
);
9109 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9110 if (!(strcmp (name
, ".sdata2") == 0
9111 || strcmp (name
, ".sbss2") == 0))
9114 /* xgettext:c-format */
9115 (_("%pB: the target (%s) of a %s relocation is "
9116 "in the wrong output section (%s)"),
9125 case R_PPC_VLE_LO16A
:
9126 relocation
= relocation
+ addend
;
9127 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9128 contents
+ rel
->r_offset
, relocation
,
9129 split16a_type
, htab
->params
->vle_reloc_fixup
);
9132 case R_PPC_VLE_LO16D
:
9133 relocation
= relocation
+ addend
;
9134 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9135 contents
+ rel
->r_offset
, relocation
,
9136 split16d_type
, htab
->params
->vle_reloc_fixup
);
9139 case R_PPC_VLE_HI16A
:
9140 relocation
= (relocation
+ addend
) >> 16;
9141 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9142 contents
+ rel
->r_offset
, relocation
,
9143 split16a_type
, htab
->params
->vle_reloc_fixup
);
9146 case R_PPC_VLE_HI16D
:
9147 relocation
= (relocation
+ addend
) >> 16;
9148 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9149 contents
+ rel
->r_offset
, relocation
,
9150 split16d_type
, htab
->params
->vle_reloc_fixup
);
9153 case R_PPC_VLE_HA16A
:
9154 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9155 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9156 contents
+ rel
->r_offset
, relocation
,
9157 split16a_type
, htab
->params
->vle_reloc_fixup
);
9160 case R_PPC_VLE_HA16D
:
9161 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9162 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9163 contents
+ rel
->r_offset
, relocation
,
9164 split16d_type
, htab
->params
->vle_reloc_fixup
);
9167 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9168 case R_PPC_EMB_SDA21
:
9169 case R_PPC_VLE_SDA21
:
9170 case R_PPC_EMB_RELSDA
:
9171 case R_PPC_VLE_SDA21_LO
:
9176 struct elf_link_hash_entry
*sda
= NULL
;
9178 if (sec
== NULL
|| sec
->output_section
== NULL
)
9180 unresolved_reloc
= TRUE
;
9184 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9185 if (strcmp (name
, ".sdata") == 0
9186 || strcmp (name
, ".sbss") == 0)
9189 sda
= htab
->sdata
[0].sym
;
9191 else if (strcmp (name
, ".sdata2") == 0
9192 || strcmp (name
, ".sbss2") == 0)
9195 sda
= htab
->sdata
[1].sym
;
9197 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
9198 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
9205 /* xgettext:c-format */
9206 (_("%pB: the target (%s) of a %s relocation is "
9207 "in the wrong output section (%s)"),
9213 bfd_set_error (bfd_error_bad_value
);
9220 if (!is_static_defined (sda
))
9222 unresolved_reloc
= TRUE
;
9225 addend
-= SYM_VAL (sda
);
9228 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9230 && (r_type
== R_PPC_VLE_SDA21
9231 || r_type
== R_PPC_VLE_SDA21_LO
))
9233 relocation
= relocation
+ addend
;
9236 /* Force e_li insn, keeping RT from original insn. */
9240 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9241 /* Top 4 bits of value to 17..20. */
9242 insn
|= (relocation
& 0xf0000) >> 5;
9243 /* Next 5 bits of the value to 11..15. */
9244 insn
|= (relocation
& 0xf800) << 5;
9245 /* And the final 11 bits of the value to bits 21 to 31. */
9246 insn
|= relocation
& 0x7ff;
9248 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9250 if (r_type
== R_PPC_VLE_SDA21
9251 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
9255 else if (r_type
== R_PPC_EMB_SDA21
9256 || r_type
== R_PPC_VLE_SDA21
9257 || r_type
== R_PPC_VLE_SDA21_LO
)
9259 /* Fill in register field. */
9260 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
9262 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9266 case R_PPC_VLE_SDAREL_LO16A
:
9267 case R_PPC_VLE_SDAREL_LO16D
:
9268 case R_PPC_VLE_SDAREL_HI16A
:
9269 case R_PPC_VLE_SDAREL_HI16D
:
9270 case R_PPC_VLE_SDAREL_HA16A
:
9271 case R_PPC_VLE_SDAREL_HA16D
:
9275 struct elf_link_hash_entry
*sda
= NULL
;
9277 if (sec
== NULL
|| sec
->output_section
== NULL
)
9279 unresolved_reloc
= TRUE
;
9283 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9284 if (strcmp (name
, ".sdata") == 0
9285 || strcmp (name
, ".sbss") == 0)
9286 sda
= htab
->sdata
[0].sym
;
9287 else if (strcmp (name
, ".sdata2") == 0
9288 || strcmp (name
, ".sbss2") == 0)
9289 sda
= htab
->sdata
[1].sym
;
9293 /* xgettext:c-format */
9294 (_("%pB: the target (%s) of a %s relocation is "
9295 "in the wrong output section (%s)"),
9301 bfd_set_error (bfd_error_bad_value
);
9306 if (sda
== NULL
|| !is_static_defined (sda
))
9308 unresolved_reloc
= TRUE
;
9311 value
= relocation
+ addend
- SYM_VAL (sda
);
9313 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
9314 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9315 contents
+ rel
->r_offset
, value
,
9317 htab
->params
->vle_reloc_fixup
);
9318 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
9319 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9320 contents
+ rel
->r_offset
, value
,
9322 htab
->params
->vle_reloc_fixup
);
9323 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
9325 value
= value
>> 16;
9326 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9327 contents
+ rel
->r_offset
, value
,
9329 htab
->params
->vle_reloc_fixup
);
9331 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
9333 value
= value
>> 16;
9334 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9335 contents
+ rel
->r_offset
, value
,
9337 htab
->params
->vle_reloc_fixup
);
9339 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
9341 value
= (value
+ 0x8000) >> 16;
9342 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9343 contents
+ rel
->r_offset
, value
,
9345 htab
->params
->vle_reloc_fixup
);
9347 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
9349 value
= (value
+ 0x8000) >> 16;
9350 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9351 contents
+ rel
->r_offset
, value
,
9353 htab
->params
->vle_reloc_fixup
);
9358 case R_PPC_VLE_ADDR20
:
9359 ppc_elf_vle_split20 (output_bfd
, contents
+ rel
->r_offset
, relocation
);
9362 /* Relocate against the beginning of the section. */
9364 case R_PPC_SECTOFF_LO
:
9365 case R_PPC_SECTOFF_HI
:
9366 case R_PPC_SECTOFF_HA
:
9367 if (sec
== NULL
|| sec
->output_section
== NULL
)
9369 unresolved_reloc
= TRUE
;
9372 addend
-= sec
->output_section
->vma
;
9375 /* Negative relocations. */
9376 case R_PPC_EMB_NADDR32
:
9377 case R_PPC_EMB_NADDR16
:
9378 case R_PPC_EMB_NADDR16_LO
:
9379 case R_PPC_EMB_NADDR16_HI
:
9380 case R_PPC_EMB_NADDR16_HA
:
9381 addend
-= 2 * relocation
;
9385 case R_PPC_GLOB_DAT
:
9386 case R_PPC_JMP_SLOT
:
9387 case R_PPC_RELATIVE
:
9388 case R_PPC_IRELATIVE
:
9390 case R_PPC_PLTREL32
:
9391 case R_PPC_PLT16_LO
:
9392 case R_PPC_PLT16_HI
:
9393 case R_PPC_PLT16_HA
:
9395 case R_PPC_EMB_RELSEC16
:
9396 case R_PPC_EMB_RELST_LO
:
9397 case R_PPC_EMB_RELST_HI
:
9398 case R_PPC_EMB_RELST_HA
:
9399 case R_PPC_EMB_BIT_FLD
:
9400 /* xgettext:c-format */
9401 _bfd_error_handler (_("%pB: %s unsupported"),
9402 input_bfd
, howto
->name
);
9404 bfd_set_error (bfd_error_invalid_operation
);
9409 /* Do any further special processing. */
9415 case R_PPC_ADDR16_HA
:
9416 case R_PPC_REL16_HA
:
9417 case R_PPC_REL16DX_HA
:
9418 case R_PPC_SECTOFF_HA
:
9419 case R_PPC_TPREL16_HA
:
9420 case R_PPC_DTPREL16_HA
:
9421 case R_PPC_EMB_NADDR16_HA
:
9422 case R_PPC_EMB_RELST_HA
:
9423 /* It's just possible that this symbol is a weak symbol
9424 that's not actually defined anywhere. In that case,
9425 'sec' would be NULL, and we should leave the symbol
9426 alone (it will be set to zero elsewhere in the link). */
9431 case R_PPC_PLT16_HA
:
9432 case R_PPC_GOT16_HA
:
9433 case R_PPC_GOT_TLSGD16_HA
:
9434 case R_PPC_GOT_TLSLD16_HA
:
9435 case R_PPC_GOT_TPREL16_HA
:
9436 case R_PPC_GOT_DTPREL16_HA
:
9437 /* Add 0x10000 if sign bit in 0:15 is set.
9438 Bits 0:15 are not used. */
9443 case R_PPC_ADDR16_LO
:
9445 case R_PPC_GOT16_LO
:
9446 case R_PPC_SDAREL16
:
9448 case R_PPC_SECTOFF_LO
:
9449 case R_PPC_DTPREL16
:
9450 case R_PPC_DTPREL16_LO
:
9452 case R_PPC_TPREL16_LO
:
9453 case R_PPC_GOT_TLSGD16
:
9454 case R_PPC_GOT_TLSGD16_LO
:
9455 case R_PPC_GOT_TLSLD16
:
9456 case R_PPC_GOT_TLSLD16_LO
:
9457 case R_PPC_GOT_DTPREL16
:
9458 case R_PPC_GOT_DTPREL16_LO
:
9459 case R_PPC_GOT_TPREL16
:
9460 case R_PPC_GOT_TPREL16_LO
:
9462 /* The 32-bit ABI lacks proper relocations to deal with
9463 certain 64-bit instructions. Prevent damage to bits
9464 that make up part of the insn opcode. */
9465 unsigned int insn
, mask
, lobit
;
9467 insn
= bfd_get_32 (input_bfd
,
9468 contents
+ rel
->r_offset
- d_offset
);
9470 if (is_insn_ds_form (insn
))
9472 else if (is_insn_dq_form (insn
))
9476 relocation
+= addend
;
9477 addend
= insn
& mask
;
9478 lobit
= mask
& relocation
;
9481 relocation
^= lobit
;
9482 info
->callbacks
->einfo
9483 /* xgettext:c-format */
9484 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9485 input_bfd
, input_section
, rel
->r_offset
,
9486 howto
->name
, sym_name
, mask
+ 1);
9487 bfd_set_error (bfd_error_bad_value
);
9495 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9496 "offset = %ld, addend = %ld\n",
9501 (long) rel
->r_offset
,
9505 if (unresolved_reloc
9506 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9508 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9509 rel
->r_offset
) != (bfd_vma
) -1)
9511 info
->callbacks
->einfo
9512 /* xgettext:c-format */
9513 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9514 input_bfd
, input_section
, rel
->r_offset
,
9520 /* 16-bit fields in insns mostly have signed values, but a
9521 few insns have 16-bit unsigned values. Really, we should
9522 have different reloc types. */
9523 if (howto
->complain_on_overflow
!= complain_overflow_dont
9524 && howto
->dst_mask
== 0xffff
9525 && (input_section
->flags
& SEC_CODE
) != 0)
9527 enum complain_overflow complain
= complain_overflow_signed
;
9529 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9533 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9534 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9535 complain
= complain_overflow_bitfield
;
9536 else if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9537 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9538 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
9539 complain
= complain_overflow_unsigned
;
9541 if (howto
->complain_on_overflow
!= complain
)
9544 alt_howto
.complain_on_overflow
= complain
;
9549 if (r_type
== R_PPC_REL16DX_HA
)
9551 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9552 if (rel
->r_offset
+ 4 > input_section
->size
)
9553 r
= bfd_reloc_outofrange
;
9558 relocation
+= addend
;
9559 relocation
-= (rel
->r_offset
9560 + input_section
->output_offset
9561 + input_section
->output_section
->vma
);
9563 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9565 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
9566 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9571 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9572 rel
->r_offset
, relocation
, addend
);
9574 if (r
!= bfd_reloc_ok
)
9576 if (r
== bfd_reloc_overflow
)
9579 /* On code like "if (foo) foo();" don't report overflow
9580 on a branch to zero when foo is undefined. */
9583 && (h
->root
.type
== bfd_link_hash_undefweak
9584 || h
->root
.type
== bfd_link_hash_undefined
)
9585 && is_branch_reloc (r_type
)))
9586 info
->callbacks
->reloc_overflow
9587 (info
, (h
? &h
->root
: NULL
), sym_name
, howto
->name
,
9588 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
);
9592 info
->callbacks
->einfo
9593 /* xgettext:c-format */
9594 (_("%H: %s reloc against `%s': error %d\n"),
9595 input_bfd
, input_section
, rel
->r_offset
,
9596 howto
->name
, sym_name
, (int) r
);
9607 Elf_Internal_Shdr
*rel_hdr
;
9608 size_t deleted
= rel
- wrel
;
9610 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
9611 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9612 if (rel_hdr
->sh_size
== 0)
9614 /* It is too late to remove an empty reloc section. Leave
9616 ??? What is wrong with an empty section??? */
9617 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
9622 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
9623 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9624 input_section
->reloc_count
-= deleted
;
9628 fprintf (stderr
, "\n");
9631 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9632 && input_section
->size
!= input_section
->rawsize
9633 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9634 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9636 /* Branch around the trampolines. */
9637 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9638 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9641 if (htab
->params
->ppc476_workaround
9642 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9643 && (!bfd_link_relocatable (info
)
9644 || (input_section
->output_section
->alignment_power
9645 >= htab
->params
->pagesize_p2
)))
9647 bfd_vma start_addr
, end_addr
, addr
;
9648 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9650 if (relax_info
->workaround_size
!= 0)
9656 bfd_put_32 (input_bfd
, BA
, fill
);
9657 p
= contents
+ input_section
->size
- relax_info
->workaround_size
;
9658 n
= relax_info
->workaround_size
>> 2;
9661 memcpy (p
, fill
, 4);
9666 /* The idea is: Replace the last instruction on a page with a
9667 branch to a patch area. Put the insn there followed by a
9668 branch back to the next page. Complicated a little by
9669 needing to handle moved conditional branches, and by not
9670 wanting to touch data-in-text. */
9672 start_addr
= (input_section
->output_section
->vma
9673 + input_section
->output_offset
);
9674 end_addr
= (start_addr
+ input_section
->size
9675 - relax_info
->workaround_size
);
9676 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9680 bfd_vma offset
= addr
- start_addr
;
9681 Elf_Internal_Rela
*lo
, *hi
;
9682 bfd_boolean is_data
;
9683 bfd_vma patch_off
, patch_addr
;
9686 /* Do we have a data reloc at this offset? If so, leave
9694 rel
= lo
+ (hi
- lo
) / 2;
9695 if (rel
->r_offset
< offset
)
9697 else if (rel
->r_offset
> offset
+ 3)
9701 switch (ELF32_R_TYPE (rel
->r_info
))
9718 /* Some instructions can be left alone too. Unconditional
9719 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9720 avoid the icache failure.
9722 The problem occurs due to prefetch across a page boundary
9723 where stale instructions can be fetched from the next
9724 page, and the mechanism for flushing these bad
9725 instructions fails under certain circumstances. The
9726 unconditional branches:
9727 1) Branch: b, bl, ba, bla,
9728 2) Branch Conditional: bc, bca, bcl, bcla,
9729 3) Branch Conditional to Link Register: bclr, bclrl,
9730 where (2) and (3) have BO=0x14 making them unconditional,
9731 prevent the bad prefetch because the prefetch itself is
9732 affected by these instructions. This happens even if the
9733 instruction is not executed.
9738 . addi 9,9,new_page@l
9745 The bctr is not predicted taken due to ctr not being
9746 ready, so prefetch continues on past the bctr into the
9747 new page which might have stale instructions. If they
9748 fail to be flushed, then they will be executed after the
9749 bctr executes. Either of the following modifications
9750 prevent the bad prefetch from happening in the first
9753 . lis 9,new_page@ha lis 9,new_page@ha
9754 . addi 9,9,new_page@l addi 9,9,new_page@l
9757 . nop b somewhere_else
9758 . b somewhere_else nop
9759 . new_page: new_page:
9761 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9762 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9763 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9764 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9765 || ((insn
& (0x3f << 26)) == (19u << 26)
9766 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9767 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9770 patch_addr
= (start_addr
+ input_section
->size
9771 - relax_info
->workaround_size
);
9772 patch_addr
= (patch_addr
+ 15) & -16;
9773 patch_off
= patch_addr
- start_addr
;
9774 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9777 && rel
->r_offset
>= offset
9778 && rel
->r_offset
< offset
+ 4)
9782 /* If the insn we are patching had a reloc, adjust the
9783 reloc r_offset so that the reloc applies to the moved
9784 location. This matters for -r and --emit-relocs. */
9785 if (rel
+ 1 != relend
)
9787 Elf_Internal_Rela tmp
= *rel
;
9789 /* Keep the relocs sorted by r_offset. */
9790 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9793 relend
[-1].r_offset
+= patch_off
- offset
;
9795 /* Adjust REL16 addends too. */
9796 switch (ELF32_R_TYPE (relend
[-1].r_info
))
9799 case R_PPC_REL16_LO
:
9800 case R_PPC_REL16_HI
:
9801 case R_PPC_REL16_HA
:
9802 relend
[-1].r_addend
+= patch_off
- offset
;
9808 /* If we are building a PIE or shared library with
9809 non-PIC objects, perhaps we had a dynamic reloc too?
9810 If so, the dynamic reloc must move with the insn. */
9811 sreloc
= elf_section_data (input_section
)->sreloc
;
9814 Elf32_External_Rela
*slo
, *shi
, *srelend
;
9817 slo
= (Elf32_External_Rela
*) sreloc
->contents
;
9818 shi
= srelend
= slo
+ sreloc
->reloc_count
;
9819 soffset
= (offset
+ input_section
->output_section
->vma
9820 + input_section
->output_offset
);
9823 Elf32_External_Rela
*srel
= slo
+ (shi
- slo
) / 2;
9824 bfd_elf32_swap_reloca_in (output_bfd
, (bfd_byte
*) srel
,
9826 if (outrel
.r_offset
< soffset
)
9828 else if (outrel
.r_offset
> soffset
+ 3)
9832 if (srel
+ 1 != srelend
)
9834 memmove (srel
, srel
+ 1,
9835 (srelend
- (srel
+ 1)) * sizeof (*srel
));
9838 outrel
.r_offset
+= patch_off
- offset
;
9839 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
9849 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9850 && (insn
& 2) == 0 /* relative */)
9852 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
9854 delta
+= offset
- patch_off
;
9855 if (bfd_link_relocatable (info
) && rel
!= NULL
)
9857 if (!bfd_link_relocatable (info
) && rel
!= NULL
)
9859 enum elf_ppc_reloc_type r_type
;
9861 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
9862 if (r_type
== R_PPC_REL14_BRTAKEN
)
9863 insn
|= BRANCH_PREDICT_BIT
;
9864 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
9865 insn
&= ~BRANCH_PREDICT_BIT
;
9867 BFD_ASSERT (r_type
== R_PPC_REL14
);
9869 if ((r_type
== R_PPC_REL14_BRTAKEN
9870 || r_type
== R_PPC_REL14_BRNTAKEN
)
9871 && delta
+ 0x8000 < 0x10000
9872 && (bfd_signed_vma
) delta
< 0)
9873 insn
^= BRANCH_PREDICT_BIT
;
9875 if (delta
+ 0x8000 < 0x10000)
9877 bfd_put_32 (input_bfd
,
9878 (insn
& ~0xfffc) | (delta
& 0xfffc),
9879 contents
+ patch_off
);
9881 bfd_put_32 (input_bfd
,
9882 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9883 contents
+ patch_off
);
9890 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
9892 relend
[-1].r_offset
+= 8;
9893 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
9895 bfd_put_32 (input_bfd
,
9896 (insn
& ~0xfffc) | 8,
9897 contents
+ patch_off
);
9899 bfd_put_32 (input_bfd
,
9900 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9901 contents
+ patch_off
);
9903 bfd_put_32 (input_bfd
,
9904 B
| ((delta
- 8) & 0x3fffffc),
9905 contents
+ patch_off
);
9911 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
9913 bfd_put_32 (input_bfd
,
9914 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9915 contents
+ patch_off
);
9918 BFD_ASSERT (patch_off
<= input_section
->size
);
9919 relax_info
->workaround_size
= input_section
->size
- patch_off
;
9926 /* Finish up dynamic symbol handling. We set the contents of various
9927 dynamic sections here. */
9930 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9931 struct bfd_link_info
*info
,
9932 struct elf_link_hash_entry
*h
,
9933 Elf_Internal_Sym
*sym
)
9935 struct ppc_elf_link_hash_table
*htab
;
9936 struct plt_entry
*ent
;
9937 bfd_boolean doneone
;
9940 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
9941 h
->root
.root
.string
);
9944 htab
= ppc_elf_hash_table (info
);
9945 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
9948 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9949 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9953 Elf_Internal_Rela rela
;
9955 bfd_vma reloc_index
;
9957 if (htab
->plt_type
== PLT_NEW
9958 || !htab
->elf
.dynamic_sections_created
9959 || h
->dynindx
== -1)
9960 reloc_index
= ent
->plt
.offset
/ 4;
9963 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
9964 / htab
->plt_slot_size
);
9965 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
9966 && htab
->plt_type
== PLT_OLD
)
9967 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
9970 /* This symbol has an entry in the procedure linkage table.
9972 if (htab
->plt_type
== PLT_VXWORKS
9973 && htab
->elf
.dynamic_sections_created
9974 && h
->dynindx
!= -1)
9977 const bfd_vma
*plt_entry
;
9979 /* The first three entries in .got.plt are reserved. */
9980 got_offset
= (reloc_index
+ 3) * 4;
9982 /* Use the right PLT. */
9983 plt_entry
= bfd_link_pic (info
) ? ppc_elf_vxworks_pic_plt_entry
9984 : ppc_elf_vxworks_plt_entry
;
9986 /* Fill in the .plt on VxWorks. */
9987 if (bfd_link_pic (info
))
9989 bfd_put_32 (output_bfd
,
9990 plt_entry
[0] | PPC_HA (got_offset
),
9991 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 0);
9992 bfd_put_32 (output_bfd
,
9993 plt_entry
[1] | PPC_LO (got_offset
),
9994 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 4);
9998 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
10000 bfd_put_32 (output_bfd
,
10001 plt_entry
[0] | PPC_HA (got_loc
),
10002 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 0);
10003 bfd_put_32 (output_bfd
,
10004 plt_entry
[1] | PPC_LO (got_loc
),
10005 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 4);
10008 bfd_put_32 (output_bfd
, plt_entry
[2],
10009 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 8);
10010 bfd_put_32 (output_bfd
, plt_entry
[3],
10011 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 12);
10013 /* This instruction is an immediate load. The value loaded is
10014 the byte offset of the R_PPC_JMP_SLOT relocation from the
10015 start of the .rela.plt section. The value is stored in the
10016 low-order 16 bits of the load instruction. */
10017 /* NOTE: It appears that this is now an index rather than a
10018 prescaled offset. */
10019 bfd_put_32 (output_bfd
,
10020 plt_entry
[4] | reloc_index
,
10021 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 16);
10022 /* This instruction is a PC-relative branch whose target is
10023 the start of the PLT section. The address of this branch
10024 instruction is 20 bytes beyond the start of this PLT entry.
10025 The address is encoded in bits 6-29, inclusive. The value
10026 stored is right-shifted by two bits, permitting a 26-bit
10028 bfd_put_32 (output_bfd
,
10030 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
10031 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 20);
10032 bfd_put_32 (output_bfd
, plt_entry
[6],
10033 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 24);
10034 bfd_put_32 (output_bfd
, plt_entry
[7],
10035 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 28);
10037 /* Fill in the GOT entry corresponding to this PLT slot with
10038 the address immediately after the "bctr" instruction
10039 in this PLT entry. */
10040 bfd_put_32 (output_bfd
, (htab
->elf
.splt
->output_section
->vma
10041 + htab
->elf
.splt
->output_offset
10042 + ent
->plt
.offset
+ 16),
10043 htab
->elf
.sgotplt
->contents
+ got_offset
);
10045 if (!bfd_link_pic (info
))
10047 /* Fill in a couple of entries in .rela.plt.unloaded. */
10048 loc
= htab
->srelplt2
->contents
10049 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
10050 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
10051 * sizeof (Elf32_External_Rela
));
10053 /* Provide the @ha relocation for the first instruction. */
10054 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10055 + htab
->elf
.splt
->output_offset
10056 + ent
->plt
.offset
+ 2);
10057 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10059 rela
.r_addend
= got_offset
;
10060 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10061 loc
+= sizeof (Elf32_External_Rela
);
10063 /* Provide the @l relocation for the second instruction. */
10064 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10065 + htab
->elf
.splt
->output_offset
10066 + ent
->plt
.offset
+ 6);
10067 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10069 rela
.r_addend
= got_offset
;
10070 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10071 loc
+= sizeof (Elf32_External_Rela
);
10073 /* Provide a relocation for the GOT entry corresponding to this
10074 PLT slot. Point it at the middle of the .plt entry. */
10075 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
10076 + htab
->elf
.sgotplt
->output_offset
10078 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
10080 rela
.r_addend
= ent
->plt
.offset
+ 16;
10081 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10084 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10085 In particular, the offset for the relocation is not the
10086 address of the PLT entry for this function, as specified
10087 by the ABI. Instead, the offset is set to the address of
10088 the GOT slot for this function. See EABI 4.4.4.1. */
10089 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
10090 + htab
->elf
.sgotplt
->output_offset
10096 asection
*splt
= htab
->elf
.splt
;
10097 if (!htab
->elf
.dynamic_sections_created
10098 || h
->dynindx
== -1)
10099 splt
= htab
->elf
.iplt
;
10101 rela
.r_offset
= (splt
->output_section
->vma
10102 + splt
->output_offset
10103 + ent
->plt
.offset
);
10104 if (htab
->plt_type
== PLT_OLD
10105 || !htab
->elf
.dynamic_sections_created
10106 || h
->dynindx
== -1)
10108 /* We don't need to fill in the .plt. The ppc dynamic
10109 linker will fill it in. */
10113 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
10114 + htab
->glink
->output_section
->vma
10115 + htab
->glink
->output_offset
);
10116 bfd_put_32 (output_bfd
, val
,
10117 splt
->contents
+ ent
->plt
.offset
);
10121 /* Fill in the entry in the .rela.plt section. */
10123 if (!htab
->elf
.dynamic_sections_created
10124 || h
->dynindx
== -1)
10126 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
10128 && (h
->root
.type
== bfd_link_hash_defined
10129 || h
->root
.type
== bfd_link_hash_defweak
));
10130 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
10131 rela
.r_addend
= SYM_VAL (h
);
10134 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
10136 if (!htab
->elf
.dynamic_sections_created
10137 || h
->dynindx
== -1)
10139 loc
= (htab
->elf
.irelplt
->contents
10140 + (htab
->elf
.irelplt
->reloc_count
++
10141 * sizeof (Elf32_External_Rela
)));
10142 htab
->local_ifunc_resolver
= 1;
10146 loc
= (htab
->elf
.srelplt
->contents
10147 + reloc_index
* sizeof (Elf32_External_Rela
));
10148 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
10149 htab
->maybe_local_ifunc_resolver
= 1;
10151 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10153 if (!h
->def_regular
)
10155 /* Mark the symbol as undefined, rather than as
10156 defined in the .plt section. Leave the value if
10157 there were any relocations where pointer equality
10158 matters (this is a clue for the dynamic linker, to
10159 make function pointer comparisons work between an
10160 application and shared library), otherwise set it
10162 sym
->st_shndx
= SHN_UNDEF
;
10163 if (!h
->pointer_equality_needed
)
10165 else if (!h
->ref_regular_nonweak
)
10167 /* This breaks function pointer comparisons, but
10168 that is better than breaking tests for a NULL
10169 function pointer. */
10173 else if (h
->type
== STT_GNU_IFUNC
10174 && !bfd_link_pic (info
))
10176 /* Set the value of ifunc symbols in a non-pie
10177 executable to the glink entry. This is to avoid
10178 text relocations. We can't do this for ifunc in
10179 allocate_dynrelocs, as we do for normal dynamic
10180 function symbols with plt entries, because we need
10181 to keep the original value around for the ifunc
10183 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
10184 (output_bfd
, htab
->glink
->output_section
));
10185 sym
->st_value
= (ent
->glink_offset
10186 + htab
->glink
->output_offset
10187 + htab
->glink
->output_section
->vma
);
10192 if (htab
->plt_type
== PLT_NEW
10193 || !htab
->elf
.dynamic_sections_created
10194 || h
->dynindx
== -1)
10197 asection
*splt
= htab
->elf
.splt
;
10199 if (!htab
->elf
.dynamic_sections_created
10200 || h
->dynindx
== -1)
10201 splt
= htab
->elf
.iplt
;
10203 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
10204 write_glink_stub (h
, ent
, splt
, p
, info
);
10206 if (!bfd_link_pic (info
))
10207 /* We only need one non-PIC glink stub. */
10217 Elf_Internal_Rela rela
;
10220 /* This symbols needs a copy reloc. Set it up. */
10223 fprintf (stderr
, ", copy");
10226 BFD_ASSERT (h
->dynindx
!= -1);
10228 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
10230 else if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
10231 s
= htab
->elf
.sreldynrelro
;
10233 s
= htab
->elf
.srelbss
;
10234 BFD_ASSERT (s
!= NULL
);
10236 rela
.r_offset
= SYM_VAL (h
);
10237 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
10239 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
10240 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10244 fprintf (stderr
, "\n");
10250 static enum elf_reloc_type_class
10251 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
10252 const asection
*rel_sec
,
10253 const Elf_Internal_Rela
*rela
)
10255 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
10257 if (rel_sec
== htab
->elf
.irelplt
)
10258 return reloc_class_ifunc
;
10260 switch (ELF32_R_TYPE (rela
->r_info
))
10262 case R_PPC_RELATIVE
:
10263 return reloc_class_relative
;
10264 case R_PPC_JMP_SLOT
:
10265 return reloc_class_plt
;
10267 return reloc_class_copy
;
10269 return reloc_class_normal
;
10273 /* Finish up the dynamic sections. */
10276 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
10277 struct bfd_link_info
*info
)
10280 struct ppc_elf_link_hash_table
*htab
;
10283 bfd_boolean ret
= TRUE
;
10286 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
10289 htab
= ppc_elf_hash_table (info
);
10290 dynobj
= htab
->elf
.dynobj
;
10291 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
10294 if (htab
->elf
.hgot
!= NULL
)
10295 got
= SYM_VAL (htab
->elf
.hgot
);
10297 if (htab
->elf
.dynamic_sections_created
)
10299 Elf32_External_Dyn
*dyncon
, *dynconend
;
10301 BFD_ASSERT (htab
->elf
.splt
!= NULL
&& sdyn
!= NULL
);
10303 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
10304 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10305 for (; dyncon
< dynconend
; dyncon
++)
10307 Elf_Internal_Dyn dyn
;
10310 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10315 if (htab
->is_vxworks
)
10316 s
= htab
->elf
.sgotplt
;
10318 s
= htab
->elf
.splt
;
10319 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10323 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
10327 s
= htab
->elf
.srelplt
;
10328 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10332 dyn
.d_un
.d_ptr
= got
;
10336 if (htab
->local_ifunc_resolver
)
10337 info
->callbacks
->einfo
10338 (_("%X%P: text relocations and GNU indirect "
10339 "functions will result in a segfault at runtime\n"));
10340 else if (htab
->maybe_local_ifunc_resolver
)
10341 info
->callbacks
->einfo
10342 (_("%P: warning: text relocations and GNU indirect "
10343 "functions may result in a segfault at runtime\n"));
10347 if (htab
->is_vxworks
10348 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
10353 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10357 if (htab
->elf
.sgot
!= NULL
10358 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
10360 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->elf
.sgot
10361 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->elf
.sgotplt
)
10363 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
10365 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
10366 if (htab
->plt_type
== PLT_OLD
)
10368 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10369 so that a function can easily find the address of
10370 _GLOBAL_OFFSET_TABLE_. */
10371 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
10372 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10373 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
10378 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
10379 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
10380 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10381 bfd_put_32 (output_bfd
, val
, p
);
10386 /* xgettext:c-format */
10387 _bfd_error_handler (_("%s not defined in linker created %pA"),
10388 htab
->elf
.hgot
->root
.root
.string
,
10389 (htab
->elf
.sgotplt
!= NULL
10390 ? htab
->elf
.sgotplt
: htab
->elf
.sgot
));
10391 bfd_set_error (bfd_error_bad_value
);
10395 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
10398 /* Fill in the first entry in the VxWorks procedure linkage table. */
10399 if (htab
->is_vxworks
10400 && htab
->elf
.splt
!= NULL
10401 && htab
->elf
.splt
->size
!= 0
10402 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
10404 asection
*splt
= htab
->elf
.splt
;
10405 /* Use the right PLT. */
10406 const bfd_vma
*plt_entry
= (bfd_link_pic (info
)
10407 ? ppc_elf_vxworks_pic_plt0_entry
10408 : ppc_elf_vxworks_plt0_entry
);
10410 if (!bfd_link_pic (info
))
10412 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
10414 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
10415 splt
->contents
+ 0);
10416 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
10417 splt
->contents
+ 4);
10421 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
10422 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
10424 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
10425 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
10426 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
10427 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
10428 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
10429 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
10431 if (! bfd_link_pic (info
))
10433 Elf_Internal_Rela rela
;
10436 loc
= htab
->srelplt2
->contents
;
10438 /* Output the @ha relocation for the first instruction. */
10439 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10440 + htab
->elf
.splt
->output_offset
10442 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10444 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10445 loc
+= sizeof (Elf32_External_Rela
);
10447 /* Output the @l relocation for the second instruction. */
10448 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10449 + htab
->elf
.splt
->output_offset
10451 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10453 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10454 loc
+= sizeof (Elf32_External_Rela
);
10456 /* Fix up the remaining relocations. They may have the wrong
10457 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10458 in which symbols were output. */
10459 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
10461 Elf_Internal_Rela rel
;
10463 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10464 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10465 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10466 loc
+= sizeof (Elf32_External_Rela
);
10468 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10469 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10470 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10471 loc
+= sizeof (Elf32_External_Rela
);
10473 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10474 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
10475 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10476 loc
+= sizeof (Elf32_External_Rela
);
10481 if (htab
->glink
!= NULL
10482 && htab
->glink
->contents
!= NULL
10483 && htab
->elf
.dynamic_sections_created
)
10486 unsigned char *endp
;
10490 * PIC glink code is the following:
10492 * # ith PLT code stub.
10493 * addis 11,30,(plt+(i-1)*4-got)@ha
10494 * lwz 11,(plt+(i-1)*4-got)@l(11)
10498 * # A table of branches, one for each plt entry.
10499 * # The idea is that the plt call stub loads ctr and r11 with these
10500 * # addresses, so (r11 - res_0) gives the plt index * 4.
10501 * res_0: b PLTresolve
10502 * res_1: b PLTresolve
10504 * # Some number of entries towards the end can be nops
10510 * addis 11,11,(1f-res_0)@ha
10513 * 1: addi 11,11,(1b-res_0)@l
10516 * sub 11,11,12 # r11 = index * 4
10517 * addis 12,12,(got+4-1b)@ha
10518 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10519 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10522 * add 11,0,11 # r11 = index * 12 = reloc offset.
10525 * Non-PIC glink code is a little simpler.
10527 * # ith PLT code stub.
10528 * lis 11,(plt+(i-1)*4)@ha
10529 * lwz 11,(plt+(i-1)*4)@l(11)
10533 * The branch table is the same, then comes
10536 * lis 12,(got+4)@ha
10537 * addis 11,11,(-res_0)@ha
10538 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10539 * addi 11,11,(-res_0)@l # r11 = index * 4
10542 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10543 * add 11,0,11 # r11 = index * 12 = reloc offset.
10547 /* Build the branch table, one for each plt entry (less one),
10548 and perhaps some padding. */
10549 p
= htab
->glink
->contents
;
10550 p
+= htab
->glink_pltresolve
;
10551 endp
= htab
->glink
->contents
;
10552 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10553 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10555 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10560 bfd_put_32 (output_bfd
, NOP
, p
);
10564 res0
= (htab
->glink_pltresolve
10565 + htab
->glink
->output_section
->vma
10566 + htab
->glink
->output_offset
);
10568 if (htab
->params
->ppc476_workaround
)
10570 /* Ensure that a call stub at the end of a page doesn't
10571 result in prefetch over the end of the page into the
10572 glink branch table. */
10573 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10575 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10576 + htab
->glink
->output_offset
);
10578 for (page_addr
= res0
& -pagesize
;
10579 page_addr
> glink_start
;
10580 page_addr
-= pagesize
)
10582 /* We have a plt call stub that may need fixing. */
10586 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10587 insn
= bfd_get_32 (output_bfd
, loc
);
10590 /* By alignment, we know that there must be at least
10591 one other call stub before this one. */
10592 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10594 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10596 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10601 /* Last comes the PLTresolve stub. */
10602 endp
= p
+ GLINK_PLTRESOLVE
;
10603 if (bfd_link_pic (info
))
10607 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10608 + htab
->glink
->output_section
->vma
10609 + htab
->glink
->output_offset
);
10611 bfd_put_32 (output_bfd
, ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
);
10613 bfd_put_32 (output_bfd
, MFLR_0
, p
);
10615 bfd_put_32 (output_bfd
, BCL_20_31
, p
);
10617 bfd_put_32 (output_bfd
, ADDI_11_11
+ PPC_LO (bcl
- res0
), p
);
10619 bfd_put_32 (output_bfd
, MFLR_12
, p
);
10621 bfd_put_32 (output_bfd
, MTLR_0
, p
);
10623 bfd_put_32 (output_bfd
, SUB_11_11_12
, p
);
10625 bfd_put_32 (output_bfd
, ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
);
10627 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10629 bfd_put_32 (output_bfd
, LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
);
10631 bfd_put_32 (output_bfd
, LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
);
10636 bfd_put_32 (output_bfd
, LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
);
10638 bfd_put_32 (output_bfd
, LWZ_12_12
+ 4, p
);
10641 bfd_put_32 (output_bfd
, MTCTR_0
, p
);
10643 bfd_put_32 (output_bfd
, ADD_0_11_11
, p
);
10647 bfd_put_32 (output_bfd
, LIS_12
+ PPC_HA (got
+ 4), p
);
10649 bfd_put_32 (output_bfd
, ADDIS_11_11
+ PPC_HA (-res0
), p
);
10651 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10652 bfd_put_32 (output_bfd
, LWZ_0_12
+ PPC_LO (got
+ 4), p
);
10654 bfd_put_32 (output_bfd
, LWZU_0_12
+ PPC_LO (got
+ 4), p
);
10656 bfd_put_32 (output_bfd
, ADDI_11_11
+ PPC_LO (-res0
), p
);
10658 bfd_put_32 (output_bfd
, MTCTR_0
, p
);
10660 bfd_put_32 (output_bfd
, ADD_0_11_11
, p
);
10662 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10663 bfd_put_32 (output_bfd
, LWZ_12_12
+ PPC_LO (got
+ 8), p
);
10665 bfd_put_32 (output_bfd
, LWZ_12_12
+ 4, p
);
10668 bfd_put_32 (output_bfd
, ADD_11_0_11
, p
);
10670 bfd_put_32 (output_bfd
, BCTR
, p
);
10674 bfd_put_32 (output_bfd
,
10675 htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
10678 BFD_ASSERT (p
== endp
);
10681 if (htab
->glink_eh_frame
!= NULL
10682 && htab
->glink_eh_frame
->contents
!= NULL
)
10684 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10687 p
+= sizeof (glink_eh_frame_cie
);
10692 /* Offset to .glink. */
10693 val
= (htab
->glink
->output_section
->vma
10694 + htab
->glink
->output_offset
);
10695 val
-= (htab
->glink_eh_frame
->output_section
->vma
10696 + htab
->glink_eh_frame
->output_offset
);
10697 val
-= p
- htab
->glink_eh_frame
->contents
;
10698 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10700 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10701 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10702 htab
->glink_eh_frame
,
10703 htab
->glink_eh_frame
->contents
))
10710 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10711 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10712 #define TARGET_BIG_SYM powerpc_elf32_vec
10713 #define TARGET_BIG_NAME "elf32-powerpc"
10714 #define ELF_ARCH bfd_arch_powerpc
10715 #define ELF_TARGET_ID PPC32_ELF_DATA
10716 #define ELF_MACHINE_CODE EM_PPC
10717 #ifdef __QNXTARGET__
10718 #define ELF_MAXPAGESIZE 0x1000
10719 #define ELF_COMMONPAGESIZE 0x1000
10721 #define ELF_MAXPAGESIZE 0x10000
10722 #define ELF_COMMONPAGESIZE 0x10000
10724 #define ELF_MINPAGESIZE 0x1000
10725 #define elf_info_to_howto ppc_elf_info_to_howto
10727 #ifdef EM_CYGNUS_POWERPC
10728 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10732 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10735 #define elf_backend_plt_not_loaded 1
10736 #define elf_backend_want_dynrelro 1
10737 #define elf_backend_can_gc_sections 1
10738 #define elf_backend_can_refcount 1
10739 #define elf_backend_rela_normal 1
10740 #define elf_backend_caches_rawsize 1
10742 #define bfd_elf32_mkobject ppc_elf_mkobject
10743 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10744 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10745 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10746 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10747 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10748 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10749 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10751 #define elf_backend_object_p ppc_elf_object_p
10752 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10753 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10754 #define elf_backend_relocate_section ppc_elf_relocate_section
10755 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10756 #define elf_backend_check_relocs ppc_elf_check_relocs
10757 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10758 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10759 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10760 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10761 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10762 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10763 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10764 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10765 #define elf_backend_fake_sections ppc_elf_fake_sections
10766 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10767 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10768 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10769 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10770 #define elf_backend_write_core_note ppc_elf_write_core_note
10771 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10772 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10773 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10774 #define elf_backend_write_section ppc_elf_write_section
10775 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10776 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10777 #define elf_backend_action_discarded ppc_elf_action_discarded
10778 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10779 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10781 #include "elf32-target.h"
10783 /* FreeBSD Target */
10785 #undef TARGET_LITTLE_SYM
10786 #undef TARGET_LITTLE_NAME
10788 #undef TARGET_BIG_SYM
10789 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10790 #undef TARGET_BIG_NAME
10791 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10794 #define ELF_OSABI ELFOSABI_FREEBSD
10797 #define elf32_bed elf32_powerpc_fbsd_bed
10799 #include "elf32-target.h"
10801 /* VxWorks Target */
10803 #undef TARGET_LITTLE_SYM
10804 #undef TARGET_LITTLE_NAME
10806 #undef TARGET_BIG_SYM
10807 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10808 #undef TARGET_BIG_NAME
10809 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10813 /* VxWorks uses the elf default section flags for .plt. */
10814 static const struct bfd_elf_special_section
*
10815 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd
, asection
*sec
)
10817 if (sec
->name
== NULL
)
10820 if (strcmp (sec
->name
, ".plt") == 0)
10821 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
10823 return ppc_elf_get_sec_type_attr (abfd
, sec
);
10826 /* Like ppc_elf_link_hash_table_create, but overrides
10827 appropriately for VxWorks. */
10828 static struct bfd_link_hash_table
*
10829 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
10831 struct bfd_link_hash_table
*ret
;
10833 ret
= ppc_elf_link_hash_table_create (abfd
);
10836 struct ppc_elf_link_hash_table
*htab
10837 = (struct ppc_elf_link_hash_table
*)ret
;
10838 htab
->is_vxworks
= 1;
10839 htab
->plt_type
= PLT_VXWORKS
;
10840 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
10841 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
10842 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
10847 /* Tweak magic VxWorks symbols as they are loaded. */
10849 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
10850 struct bfd_link_info
*info
,
10851 Elf_Internal_Sym
*sym
,
10852 const char **namep
,
10857 if (!elf_vxworks_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
,
10861 return ppc_elf_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
, valp
);
10865 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10867 ppc_elf_final_write_processing (abfd
, linker
);
10868 elf_vxworks_final_write_processing (abfd
, linker
);
10871 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10873 #undef elf_backend_want_plt_sym
10874 #define elf_backend_want_plt_sym 1
10875 #undef elf_backend_want_got_plt
10876 #define elf_backend_want_got_plt 1
10877 #undef elf_backend_got_symbol_offset
10878 #define elf_backend_got_symbol_offset 0
10879 #undef elf_backend_plt_not_loaded
10880 #define elf_backend_plt_not_loaded 0
10881 #undef elf_backend_plt_readonly
10882 #define elf_backend_plt_readonly 1
10883 #undef elf_backend_got_header_size
10884 #define elf_backend_got_header_size 12
10885 #undef elf_backend_dtrel_excludes_plt
10886 #define elf_backend_dtrel_excludes_plt 1
10888 #undef bfd_elf32_get_synthetic_symtab
10890 #undef bfd_elf32_bfd_link_hash_table_create
10891 #define bfd_elf32_bfd_link_hash_table_create \
10892 ppc_elf_vxworks_link_hash_table_create
10893 #undef elf_backend_add_symbol_hook
10894 #define elf_backend_add_symbol_hook \
10895 ppc_elf_vxworks_add_symbol_hook
10896 #undef elf_backend_link_output_symbol_hook
10897 #define elf_backend_link_output_symbol_hook \
10898 elf_vxworks_link_output_symbol_hook
10899 #undef elf_backend_final_write_processing
10900 #define elf_backend_final_write_processing \
10901 ppc_elf_vxworks_final_write_processing
10902 #undef elf_backend_get_sec_type_attr
10903 #define elf_backend_get_sec_type_attr \
10904 ppc_elf_vxworks_get_sec_type_attr
10905 #undef elf_backend_emit_relocs
10906 #define elf_backend_emit_relocs \
10907 elf_vxworks_emit_relocs
10910 #define elf32_bed ppc_elf_vxworks_bed
10911 #undef elf_backend_post_process_headers
10913 #include "elf32-target.h"