1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
24 /* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
36 #include "elf32-ppc.h"
37 #include "elf-vxworks.h"
39 /* RELA relocations are used here. */
41 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
42 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
43 static bfd_reloc_status_type ppc_elf_unhandled_reloc
44 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 /* Branch prediction bit for branch taken relocs. */
47 #define BRANCH_PREDICT_BIT 0x200000
48 /* Mask to set RA in memory instructions. */
49 #define RA_REGISTER_MASK 0x001f0000
50 /* Value to shift register by to insert RA. */
51 #define RA_REGISTER_SHIFT 16
53 /* The name of the dynamic interpreter. This is put in the .interp
55 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
57 /* For old-style PLT. */
58 /* The number of single-slot PLT entries (the rest use two slots). */
59 #define PLT_NUM_SINGLE_ENTRIES 8192
61 /* For new-style .glink and .plt. */
62 #define GLINK_PLTRESOLVE 16*4
63 #define GLINK_ENTRY_SIZE 4*4
65 /* VxWorks uses its own plt layout, filled in by the static linker. */
67 /* The standard VxWorks PLT entry. */
68 #define VXWORKS_PLT_ENTRY_SIZE 32
69 static const bfd_vma ppc_elf_vxworks_plt_entry
70 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
72 0x3d800000, /* lis r12,0 */
73 0x818c0000, /* lwz r12,0(r12) */
74 0x7d8903a6, /* mtctr r12 */
75 0x4e800420, /* bctr */
76 0x39600000, /* li r11,0 */
77 0x48000000, /* b 14 <.PLT0resolve+0x4> */
81 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
84 0x3d9e0000, /* addis r12,r30,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
94 /* The initial VxWorks PLT entry. */
95 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
96 static const bfd_vma ppc_elf_vxworks_plt0_entry
97 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
99 0x3d800000, /* lis r12,0 */
100 0x398c0000, /* addi r12,r12,0 */
101 0x800c0008, /* lwz r0,8(r12) */
102 0x7c0903a6, /* mtctr r0 */
103 0x818c0004, /* lwz r12,4(r12) */
104 0x4e800420, /* bctr */
105 0x60000000, /* nop */
106 0x60000000, /* nop */
108 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
111 0x819e0008, /* lwz r12,8(r30) */
112 0x7d8903a6, /* mtctr r12 */
113 0x819e0004, /* lwz r12,4(r30) */
114 0x4e800420, /* bctr */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
121 /* For executables, we have some additional relocations in
122 .rela.plt.unloaded, for the kernel loader. */
124 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
125 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
126 /* The number of relocations in the PLTResolve slot. */
127 #define VXWORKS_PLTRESOLVE_RELOCS 2
128 /* The number of relocations in the PLTResolve slot when when creating
130 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
132 /* Some instructions. */
133 #define ADDIS_11_11 0x3d6b0000
134 #define ADDIS_11_30 0x3d7e0000
135 #define ADDIS_12_12 0x3d8c0000
136 #define ADDI_11_11 0x396b0000
137 #define ADD_0_11_11 0x7c0b5a14
138 #define ADD_11_0_11 0x7d605a14
140 #define BCL_20_31 0x429f0005
141 #define BCTR 0x4e800420
142 #define LIS_11 0x3d600000
143 #define LIS_12 0x3d800000
144 #define LWZU_0_12 0x840c0000
145 #define LWZ_0_12 0x800c0000
146 #define LWZ_11_11 0x816b0000
147 #define LWZ_11_30 0x817e0000
148 #define LWZ_12_12 0x818c0000
149 #define MFLR_0 0x7c0802a6
150 #define MFLR_12 0x7d8802a6
151 #define MTCTR_0 0x7c0903a6
152 #define MTCTR_11 0x7d6903a6
153 #define MTLR_0 0x7c0803a6
154 #define NOP 0x60000000
155 #define SUB_11_11_12 0x7d6c5850
157 /* Offset of tp and dtp pointers from start of TLS block. */
158 #define TP_OFFSET 0x7000
159 #define DTP_OFFSET 0x8000
161 /* The value of a defined global symbol. */
162 #define SYM_VAL(SYM) \
163 ((SYM)->root.u.def.section->output_section->vma \
164 + (SYM)->root.u.def.section->output_offset \
165 + (SYM)->root.u.def.value)
167 static reloc_howto_type
*ppc_elf_howto_table
[R_PPC_max
];
169 static reloc_howto_type ppc_elf_howto_raw
[] = {
170 /* This reloc does nothing. */
171 HOWTO (R_PPC_NONE
, /* type */
173 2, /* size (0 = byte, 1 = short, 2 = long) */
175 FALSE
, /* pc_relative */
177 complain_overflow_bitfield
, /* complain_on_overflow */
178 bfd_elf_generic_reloc
, /* special_function */
179 "R_PPC_NONE", /* name */
180 FALSE
, /* partial_inplace */
183 FALSE
), /* pcrel_offset */
185 /* A standard 32 bit relocation. */
186 HOWTO (R_PPC_ADDR32
, /* type */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
190 FALSE
, /* pc_relative */
192 complain_overflow_bitfield
, /* complain_on_overflow */
193 bfd_elf_generic_reloc
, /* special_function */
194 "R_PPC_ADDR32", /* name */
195 FALSE
, /* partial_inplace */
197 0xffffffff, /* dst_mask */
198 FALSE
), /* pcrel_offset */
200 /* An absolute 26 bit branch; the lower two bits must be zero.
201 FIXME: we don't check that, we just clear them. */
202 HOWTO (R_PPC_ADDR24
, /* type */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
206 FALSE
, /* pc_relative */
208 complain_overflow_bitfield
, /* complain_on_overflow */
209 bfd_elf_generic_reloc
, /* special_function */
210 "R_PPC_ADDR24", /* name */
211 FALSE
, /* partial_inplace */
213 0x3fffffc, /* dst_mask */
214 FALSE
), /* pcrel_offset */
216 /* A standard 16 bit relocation. */
217 HOWTO (R_PPC_ADDR16
, /* type */
219 1, /* size (0 = byte, 1 = short, 2 = long) */
221 FALSE
, /* pc_relative */
223 complain_overflow_bitfield
, /* complain_on_overflow */
224 bfd_elf_generic_reloc
, /* special_function */
225 "R_PPC_ADDR16", /* name */
226 FALSE
, /* partial_inplace */
228 0xffff, /* dst_mask */
229 FALSE
), /* pcrel_offset */
231 /* A 16 bit relocation without overflow. */
232 HOWTO (R_PPC_ADDR16_LO
, /* type */
234 1, /* size (0 = byte, 1 = short, 2 = long) */
236 FALSE
, /* pc_relative */
238 complain_overflow_dont
,/* complain_on_overflow */
239 bfd_elf_generic_reloc
, /* special_function */
240 "R_PPC_ADDR16_LO", /* name */
241 FALSE
, /* partial_inplace */
243 0xffff, /* dst_mask */
244 FALSE
), /* pcrel_offset */
246 /* The high order 16 bits of an address. */
247 HOWTO (R_PPC_ADDR16_HI
, /* type */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
251 FALSE
, /* pc_relative */
253 complain_overflow_dont
, /* complain_on_overflow */
254 bfd_elf_generic_reloc
, /* special_function */
255 "R_PPC_ADDR16_HI", /* name */
256 FALSE
, /* partial_inplace */
258 0xffff, /* dst_mask */
259 FALSE
), /* pcrel_offset */
261 /* The high order 16 bits of an address, plus 1 if the contents of
262 the low 16 bits, treated as a signed number, is negative. */
263 HOWTO (R_PPC_ADDR16_HA
, /* type */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE
, /* pc_relative */
269 complain_overflow_dont
, /* complain_on_overflow */
270 ppc_elf_addr16_ha_reloc
, /* special_function */
271 "R_PPC_ADDR16_HA", /* name */
272 FALSE
, /* partial_inplace */
274 0xffff, /* dst_mask */
275 FALSE
), /* pcrel_offset */
277 /* An absolute 16 bit branch; the lower two bits must be zero.
278 FIXME: we don't check that, we just clear them. */
279 HOWTO (R_PPC_ADDR14
, /* type */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE
, /* pc_relative */
285 complain_overflow_bitfield
, /* complain_on_overflow */
286 bfd_elf_generic_reloc
, /* special_function */
287 "R_PPC_ADDR14", /* name */
288 FALSE
, /* partial_inplace */
290 0xfffc, /* dst_mask */
291 FALSE
), /* pcrel_offset */
293 /* An absolute 16 bit branch, for which bit 10 should be set to
294 indicate that the branch is expected to be taken. The lower two
295 bits must be zero. */
296 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE
, /* pc_relative */
302 complain_overflow_bitfield
, /* complain_on_overflow */
303 bfd_elf_generic_reloc
, /* special_function */
304 "R_PPC_ADDR14_BRTAKEN",/* name */
305 FALSE
, /* partial_inplace */
307 0xfffc, /* dst_mask */
308 FALSE
), /* pcrel_offset */
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is not expected to be taken. The lower
312 two bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE
, /* pc_relative */
319 complain_overflow_bitfield
, /* complain_on_overflow */
320 bfd_elf_generic_reloc
, /* special_function */
321 "R_PPC_ADDR14_BRNTAKEN",/* name */
322 FALSE
, /* partial_inplace */
324 0xfffc, /* dst_mask */
325 FALSE
), /* pcrel_offset */
327 /* A relative 26 bit branch; the lower two bits must be zero. */
328 HOWTO (R_PPC_REL24
, /* type */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
332 TRUE
, /* pc_relative */
334 complain_overflow_signed
, /* complain_on_overflow */
335 bfd_elf_generic_reloc
, /* special_function */
336 "R_PPC_REL24", /* name */
337 FALSE
, /* partial_inplace */
339 0x3fffffc, /* dst_mask */
340 TRUE
), /* pcrel_offset */
342 /* A relative 16 bit branch; the lower two bits must be zero. */
343 HOWTO (R_PPC_REL14
, /* type */
345 2, /* size (0 = byte, 1 = short, 2 = long) */
347 TRUE
, /* pc_relative */
349 complain_overflow_signed
, /* complain_on_overflow */
350 bfd_elf_generic_reloc
, /* special_function */
351 "R_PPC_REL14", /* name */
352 FALSE
, /* partial_inplace */
354 0xfffc, /* dst_mask */
355 TRUE
), /* pcrel_offset */
357 /* A relative 16 bit branch. Bit 10 should be set to indicate that
358 the branch is expected to be taken. The lower two bits must be
360 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 TRUE
, /* pc_relative */
366 complain_overflow_signed
, /* complain_on_overflow */
367 bfd_elf_generic_reloc
, /* special_function */
368 "R_PPC_REL14_BRTAKEN", /* name */
369 FALSE
, /* partial_inplace */
371 0xfffc, /* dst_mask */
372 TRUE
), /* pcrel_offset */
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is not expected to be taken. The lower two bits must
377 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE
, /* pc_relative */
383 complain_overflow_signed
, /* complain_on_overflow */
384 bfd_elf_generic_reloc
, /* special_function */
385 "R_PPC_REL14_BRNTAKEN",/* name */
386 FALSE
, /* partial_inplace */
388 0xfffc, /* dst_mask */
389 TRUE
), /* pcrel_offset */
391 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
393 HOWTO (R_PPC_GOT16
, /* type */
395 1, /* size (0 = byte, 1 = short, 2 = long) */
397 FALSE
, /* pc_relative */
399 complain_overflow_signed
, /* complain_on_overflow */
400 bfd_elf_generic_reloc
, /* special_function */
401 "R_PPC_GOT16", /* name */
402 FALSE
, /* partial_inplace */
404 0xffff, /* dst_mask */
405 FALSE
), /* pcrel_offset */
407 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
409 HOWTO (R_PPC_GOT16_LO
, /* type */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE
, /* pc_relative */
415 complain_overflow_dont
, /* complain_on_overflow */
416 bfd_elf_generic_reloc
, /* special_function */
417 "R_PPC_GOT16_LO", /* name */
418 FALSE
, /* partial_inplace */
420 0xffff, /* dst_mask */
421 FALSE
), /* pcrel_offset */
423 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
425 HOWTO (R_PPC_GOT16_HI
, /* type */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
429 FALSE
, /* pc_relative */
431 complain_overflow_bitfield
, /* complain_on_overflow */
432 bfd_elf_generic_reloc
, /* special_function */
433 "R_PPC_GOT16_HI", /* name */
434 FALSE
, /* partial_inplace */
436 0xffff, /* dst_mask */
437 FALSE
), /* pcrel_offset */
439 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
441 HOWTO (R_PPC_GOT16_HA
, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE
, /* pc_relative */
447 complain_overflow_bitfield
, /* complain_on_overflow */
448 ppc_elf_addr16_ha_reloc
, /* special_function */
449 "R_PPC_GOT16_HA", /* name */
450 FALSE
, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE
), /* pcrel_offset */
455 /* Like R_PPC_REL24, but referring to the procedure linkage table
456 entry for the symbol. */
457 HOWTO (R_PPC_PLTREL24
, /* type */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
461 TRUE
, /* pc_relative */
463 complain_overflow_signed
, /* complain_on_overflow */
464 bfd_elf_generic_reloc
, /* special_function */
465 "R_PPC_PLTREL24", /* name */
466 FALSE
, /* partial_inplace */
468 0x3fffffc, /* dst_mask */
469 TRUE
), /* pcrel_offset */
471 /* This is used only by the dynamic linker. The symbol should exist
472 both in the object being run and in some shared library. The
473 dynamic linker copies the data addressed by the symbol from the
474 shared library into the object, because the object being
475 run has to have the data at some particular address. */
476 HOWTO (R_PPC_COPY
, /* type */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
480 FALSE
, /* pc_relative */
482 complain_overflow_bitfield
, /* complain_on_overflow */
483 bfd_elf_generic_reloc
, /* special_function */
484 "R_PPC_COPY", /* name */
485 FALSE
, /* partial_inplace */
488 FALSE
), /* pcrel_offset */
490 /* Like R_PPC_ADDR32, but used when setting global offset table
492 HOWTO (R_PPC_GLOB_DAT
, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE
, /* pc_relative */
498 complain_overflow_bitfield
, /* complain_on_overflow */
499 bfd_elf_generic_reloc
, /* special_function */
500 "R_PPC_GLOB_DAT", /* name */
501 FALSE
, /* partial_inplace */
503 0xffffffff, /* dst_mask */
504 FALSE
), /* pcrel_offset */
506 /* Marks a procedure linkage table entry for a symbol. */
507 HOWTO (R_PPC_JMP_SLOT
, /* type */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
511 FALSE
, /* pc_relative */
513 complain_overflow_bitfield
, /* complain_on_overflow */
514 bfd_elf_generic_reloc
, /* special_function */
515 "R_PPC_JMP_SLOT", /* name */
516 FALSE
, /* partial_inplace */
519 FALSE
), /* pcrel_offset */
521 /* Used only by the dynamic linker. When the object is run, this
522 longword is set to the load address of the object, plus the
524 HOWTO (R_PPC_RELATIVE
, /* type */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE
, /* pc_relative */
530 complain_overflow_bitfield
, /* complain_on_overflow */
531 bfd_elf_generic_reloc
, /* special_function */
532 "R_PPC_RELATIVE", /* name */
533 FALSE
, /* partial_inplace */
535 0xffffffff, /* dst_mask */
536 FALSE
), /* pcrel_offset */
538 /* Like R_PPC_REL24, but uses the value of the symbol within the
539 object rather than the final value. Normally used for
540 _GLOBAL_OFFSET_TABLE_. */
541 HOWTO (R_PPC_LOCAL24PC
, /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 TRUE
, /* pc_relative */
547 complain_overflow_signed
, /* complain_on_overflow */
548 bfd_elf_generic_reloc
, /* special_function */
549 "R_PPC_LOCAL24PC", /* name */
550 FALSE
, /* partial_inplace */
552 0x3fffffc, /* dst_mask */
553 TRUE
), /* pcrel_offset */
555 /* Like R_PPC_ADDR32, but may be unaligned. */
556 HOWTO (R_PPC_UADDR32
, /* type */
558 2, /* size (0 = byte, 1 = short, 2 = long) */
560 FALSE
, /* pc_relative */
562 complain_overflow_bitfield
, /* complain_on_overflow */
563 bfd_elf_generic_reloc
, /* special_function */
564 "R_PPC_UADDR32", /* name */
565 FALSE
, /* partial_inplace */
567 0xffffffff, /* dst_mask */
568 FALSE
), /* pcrel_offset */
570 /* Like R_PPC_ADDR16, but may be unaligned. */
571 HOWTO (R_PPC_UADDR16
, /* type */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
575 FALSE
, /* pc_relative */
577 complain_overflow_bitfield
, /* complain_on_overflow */
578 bfd_elf_generic_reloc
, /* special_function */
579 "R_PPC_UADDR16", /* name */
580 FALSE
, /* partial_inplace */
582 0xffff, /* dst_mask */
583 FALSE
), /* pcrel_offset */
585 /* 32-bit PC relative */
586 HOWTO (R_PPC_REL32
, /* type */
588 2, /* size (0 = byte, 1 = short, 2 = long) */
590 TRUE
, /* pc_relative */
592 complain_overflow_bitfield
, /* complain_on_overflow */
593 bfd_elf_generic_reloc
, /* special_function */
594 "R_PPC_REL32", /* name */
595 FALSE
, /* partial_inplace */
597 0xffffffff, /* dst_mask */
598 TRUE
), /* pcrel_offset */
600 /* 32-bit relocation to the symbol's procedure linkage table.
601 FIXME: not supported. */
602 HOWTO (R_PPC_PLT32
, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 FALSE
, /* pc_relative */
608 complain_overflow_bitfield
, /* complain_on_overflow */
609 bfd_elf_generic_reloc
, /* special_function */
610 "R_PPC_PLT32", /* name */
611 FALSE
, /* partial_inplace */
614 FALSE
), /* pcrel_offset */
616 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
617 FIXME: not supported. */
618 HOWTO (R_PPC_PLTREL32
, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 TRUE
, /* pc_relative */
624 complain_overflow_bitfield
, /* complain_on_overflow */
625 bfd_elf_generic_reloc
, /* special_function */
626 "R_PPC_PLTREL32", /* name */
627 FALSE
, /* partial_inplace */
630 TRUE
), /* pcrel_offset */
632 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
634 HOWTO (R_PPC_PLT16_LO
, /* type */
636 1, /* size (0 = byte, 1 = short, 2 = long) */
638 FALSE
, /* pc_relative */
640 complain_overflow_dont
, /* complain_on_overflow */
641 bfd_elf_generic_reloc
, /* special_function */
642 "R_PPC_PLT16_LO", /* name */
643 FALSE
, /* partial_inplace */
645 0xffff, /* dst_mask */
646 FALSE
), /* pcrel_offset */
648 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
650 HOWTO (R_PPC_PLT16_HI
, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE
, /* pc_relative */
656 complain_overflow_bitfield
, /* complain_on_overflow */
657 bfd_elf_generic_reloc
, /* special_function */
658 "R_PPC_PLT16_HI", /* name */
659 FALSE
, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE
), /* pcrel_offset */
664 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
666 HOWTO (R_PPC_PLT16_HA
, /* type */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE
, /* pc_relative */
672 complain_overflow_bitfield
, /* complain_on_overflow */
673 ppc_elf_addr16_ha_reloc
, /* special_function */
674 "R_PPC_PLT16_HA", /* name */
675 FALSE
, /* partial_inplace */
677 0xffff, /* dst_mask */
678 FALSE
), /* pcrel_offset */
680 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
682 HOWTO (R_PPC_SDAREL16
, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE
, /* pc_relative */
688 complain_overflow_signed
, /* complain_on_overflow */
689 bfd_elf_generic_reloc
, /* special_function */
690 "R_PPC_SDAREL16", /* name */
691 FALSE
, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE
), /* pcrel_offset */
696 /* 16-bit section relative relocation. */
697 HOWTO (R_PPC_SECTOFF
, /* type */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
701 FALSE
, /* pc_relative */
703 complain_overflow_bitfield
, /* complain_on_overflow */
704 bfd_elf_generic_reloc
, /* special_function */
705 "R_PPC_SECTOFF", /* name */
706 FALSE
, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE
), /* pcrel_offset */
711 /* 16-bit lower half section relative relocation. */
712 HOWTO (R_PPC_SECTOFF_LO
, /* type */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
716 FALSE
, /* pc_relative */
718 complain_overflow_dont
, /* complain_on_overflow */
719 bfd_elf_generic_reloc
, /* special_function */
720 "R_PPC_SECTOFF_LO", /* name */
721 FALSE
, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE
), /* pcrel_offset */
726 /* 16-bit upper half section relative relocation. */
727 HOWTO (R_PPC_SECTOFF_HI
, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE
, /* pc_relative */
733 complain_overflow_bitfield
, /* complain_on_overflow */
734 bfd_elf_generic_reloc
, /* special_function */
735 "R_PPC_SECTOFF_HI", /* name */
736 FALSE
, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE
), /* pcrel_offset */
741 /* 16-bit upper half adjusted section relative relocation. */
742 HOWTO (R_PPC_SECTOFF_HA
, /* type */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
746 FALSE
, /* pc_relative */
748 complain_overflow_bitfield
, /* complain_on_overflow */
749 ppc_elf_addr16_ha_reloc
, /* special_function */
750 "R_PPC_SECTOFF_HA", /* name */
751 FALSE
, /* partial_inplace */
753 0xffff, /* dst_mask */
754 FALSE
), /* pcrel_offset */
756 /* Marker relocs for TLS. */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
761 FALSE
, /* pc_relative */
763 complain_overflow_dont
, /* complain_on_overflow */
764 bfd_elf_generic_reloc
, /* special_function */
765 "R_PPC_TLS", /* name */
766 FALSE
, /* partial_inplace */
769 FALSE
), /* pcrel_offset */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
775 FALSE
, /* pc_relative */
777 complain_overflow_dont
, /* complain_on_overflow */
778 bfd_elf_generic_reloc
, /* special_function */
779 "R_PPC_TLSGD", /* name */
780 FALSE
, /* partial_inplace */
783 FALSE
), /* pcrel_offset */
787 2, /* size (0 = byte, 1 = short, 2 = long) */
789 FALSE
, /* pc_relative */
791 complain_overflow_dont
, /* complain_on_overflow */
792 bfd_elf_generic_reloc
, /* special_function */
793 "R_PPC_TLSLD", /* name */
794 FALSE
, /* partial_inplace */
797 FALSE
), /* pcrel_offset */
799 /* Computes the load module index of the load module that contains the
800 definition of its TLS sym. */
801 HOWTO (R_PPC_DTPMOD32
,
803 2, /* size (0 = byte, 1 = short, 2 = long) */
805 FALSE
, /* pc_relative */
807 complain_overflow_dont
, /* complain_on_overflow */
808 ppc_elf_unhandled_reloc
, /* special_function */
809 "R_PPC_DTPMOD32", /* name */
810 FALSE
, /* partial_inplace */
812 0xffffffff, /* dst_mask */
813 FALSE
), /* pcrel_offset */
815 /* Computes a dtv-relative displacement, the difference between the value
816 of sym+add and the base address of the thread-local storage block that
817 contains the definition of sym, minus 0x8000. */
818 HOWTO (R_PPC_DTPREL32
,
820 2, /* size (0 = byte, 1 = short, 2 = long) */
822 FALSE
, /* pc_relative */
824 complain_overflow_dont
, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc
, /* special_function */
826 "R_PPC_DTPREL32", /* name */
827 FALSE
, /* partial_inplace */
829 0xffffffff, /* dst_mask */
830 FALSE
), /* pcrel_offset */
832 /* A 16 bit dtprel reloc. */
833 HOWTO (R_PPC_DTPREL16
,
835 1, /* size (0 = byte, 1 = short, 2 = long) */
837 FALSE
, /* pc_relative */
839 complain_overflow_signed
, /* complain_on_overflow */
840 ppc_elf_unhandled_reloc
, /* special_function */
841 "R_PPC_DTPREL16", /* name */
842 FALSE
, /* partial_inplace */
844 0xffff, /* dst_mask */
845 FALSE
), /* pcrel_offset */
847 /* Like DTPREL16, but no overflow. */
848 HOWTO (R_PPC_DTPREL16_LO
,
850 1, /* size (0 = byte, 1 = short, 2 = long) */
852 FALSE
, /* pc_relative */
854 complain_overflow_dont
, /* complain_on_overflow */
855 ppc_elf_unhandled_reloc
, /* special_function */
856 "R_PPC_DTPREL16_LO", /* name */
857 FALSE
, /* partial_inplace */
859 0xffff, /* dst_mask */
860 FALSE
), /* pcrel_offset */
862 /* Like DTPREL16_LO, but next higher group of 16 bits. */
863 HOWTO (R_PPC_DTPREL16_HI
,
865 1, /* size (0 = byte, 1 = short, 2 = long) */
867 FALSE
, /* pc_relative */
869 complain_overflow_dont
, /* complain_on_overflow */
870 ppc_elf_unhandled_reloc
, /* special_function */
871 "R_PPC_DTPREL16_HI", /* name */
872 FALSE
, /* partial_inplace */
874 0xffff, /* dst_mask */
875 FALSE
), /* pcrel_offset */
877 /* Like DTPREL16_HI, but adjust for low 16 bits. */
878 HOWTO (R_PPC_DTPREL16_HA
,
880 1, /* size (0 = byte, 1 = short, 2 = long) */
882 FALSE
, /* pc_relative */
884 complain_overflow_dont
, /* complain_on_overflow */
885 ppc_elf_unhandled_reloc
, /* special_function */
886 "R_PPC_DTPREL16_HA", /* name */
887 FALSE
, /* partial_inplace */
889 0xffff, /* dst_mask */
890 FALSE
), /* pcrel_offset */
892 /* Computes a tp-relative displacement, the difference between the value of
893 sym+add and the value of the thread pointer (r13). */
894 HOWTO (R_PPC_TPREL32
,
896 2, /* size (0 = byte, 1 = short, 2 = long) */
898 FALSE
, /* pc_relative */
900 complain_overflow_dont
, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc
, /* special_function */
902 "R_PPC_TPREL32", /* name */
903 FALSE
, /* partial_inplace */
905 0xffffffff, /* dst_mask */
906 FALSE
), /* pcrel_offset */
908 /* A 16 bit tprel reloc. */
909 HOWTO (R_PPC_TPREL16
,
911 1, /* size (0 = byte, 1 = short, 2 = long) */
913 FALSE
, /* pc_relative */
915 complain_overflow_signed
, /* complain_on_overflow */
916 ppc_elf_unhandled_reloc
, /* special_function */
917 "R_PPC_TPREL16", /* name */
918 FALSE
, /* partial_inplace */
920 0xffff, /* dst_mask */
921 FALSE
), /* pcrel_offset */
923 /* Like TPREL16, but no overflow. */
924 HOWTO (R_PPC_TPREL16_LO
,
926 1, /* size (0 = byte, 1 = short, 2 = long) */
928 FALSE
, /* pc_relative */
930 complain_overflow_dont
, /* complain_on_overflow */
931 ppc_elf_unhandled_reloc
, /* special_function */
932 "R_PPC_TPREL16_LO", /* name */
933 FALSE
, /* partial_inplace */
935 0xffff, /* dst_mask */
936 FALSE
), /* pcrel_offset */
938 /* Like TPREL16_LO, but next higher group of 16 bits. */
939 HOWTO (R_PPC_TPREL16_HI
,
941 1, /* size (0 = byte, 1 = short, 2 = long) */
943 FALSE
, /* pc_relative */
945 complain_overflow_dont
, /* complain_on_overflow */
946 ppc_elf_unhandled_reloc
, /* special_function */
947 "R_PPC_TPREL16_HI", /* name */
948 FALSE
, /* partial_inplace */
950 0xffff, /* dst_mask */
951 FALSE
), /* pcrel_offset */
953 /* Like TPREL16_HI, but adjust for low 16 bits. */
954 HOWTO (R_PPC_TPREL16_HA
,
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE
, /* pc_relative */
960 complain_overflow_dont
, /* complain_on_overflow */
961 ppc_elf_unhandled_reloc
, /* special_function */
962 "R_PPC_TPREL16_HA", /* name */
963 FALSE
, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE
), /* pcrel_offset */
968 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
969 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
970 to the first entry. */
971 HOWTO (R_PPC_GOT_TLSGD16
,
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE
, /* pc_relative */
977 complain_overflow_signed
, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc
, /* special_function */
979 "R_PPC_GOT_TLSGD16", /* name */
980 FALSE
, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE
), /* pcrel_offset */
985 /* Like GOT_TLSGD16, but no overflow. */
986 HOWTO (R_PPC_GOT_TLSGD16_LO
,
988 1, /* size (0 = byte, 1 = short, 2 = long) */
990 FALSE
, /* pc_relative */
992 complain_overflow_dont
, /* complain_on_overflow */
993 ppc_elf_unhandled_reloc
, /* special_function */
994 "R_PPC_GOT_TLSGD16_LO", /* name */
995 FALSE
, /* partial_inplace */
997 0xffff, /* dst_mask */
998 FALSE
), /* pcrel_offset */
1000 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1001 HOWTO (R_PPC_GOT_TLSGD16_HI
,
1002 16, /* rightshift */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1005 FALSE
, /* pc_relative */
1007 complain_overflow_dont
, /* complain_on_overflow */
1008 ppc_elf_unhandled_reloc
, /* special_function */
1009 "R_PPC_GOT_TLSGD16_HI", /* name */
1010 FALSE
, /* partial_inplace */
1012 0xffff, /* dst_mask */
1013 FALSE
), /* pcrel_offset */
1015 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1016 HOWTO (R_PPC_GOT_TLSGD16_HA
,
1017 16, /* rightshift */
1018 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 FALSE
, /* pc_relative */
1022 complain_overflow_dont
, /* complain_on_overflow */
1023 ppc_elf_unhandled_reloc
, /* special_function */
1024 "R_PPC_GOT_TLSGD16_HA", /* name */
1025 FALSE
, /* partial_inplace */
1027 0xffff, /* dst_mask */
1028 FALSE
), /* pcrel_offset */
1030 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1031 with values (sym+add)@dtpmod and zero, and computes the offset to the
1033 HOWTO (R_PPC_GOT_TLSLD16
,
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 FALSE
, /* pc_relative */
1039 complain_overflow_signed
, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc
, /* special_function */
1041 "R_PPC_GOT_TLSLD16", /* name */
1042 FALSE
, /* partial_inplace */
1044 0xffff, /* dst_mask */
1045 FALSE
), /* pcrel_offset */
1047 /* Like GOT_TLSLD16, but no overflow. */
1048 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1050 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 FALSE
, /* pc_relative */
1054 complain_overflow_dont
, /* complain_on_overflow */
1055 ppc_elf_unhandled_reloc
, /* special_function */
1056 "R_PPC_GOT_TLSLD16_LO", /* name */
1057 FALSE
, /* partial_inplace */
1059 0xffff, /* dst_mask */
1060 FALSE
), /* pcrel_offset */
1062 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1063 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1064 16, /* rightshift */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 FALSE
, /* pc_relative */
1069 complain_overflow_dont
, /* complain_on_overflow */
1070 ppc_elf_unhandled_reloc
, /* special_function */
1071 "R_PPC_GOT_TLSLD16_HI", /* name */
1072 FALSE
, /* partial_inplace */
1074 0xffff, /* dst_mask */
1075 FALSE
), /* pcrel_offset */
1077 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1078 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1079 16, /* rightshift */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 FALSE
, /* pc_relative */
1084 complain_overflow_dont
, /* complain_on_overflow */
1085 ppc_elf_unhandled_reloc
, /* special_function */
1086 "R_PPC_GOT_TLSLD16_HA", /* name */
1087 FALSE
, /* partial_inplace */
1089 0xffff, /* dst_mask */
1090 FALSE
), /* pcrel_offset */
1092 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1093 the offset to the entry. */
1094 HOWTO (R_PPC_GOT_DTPREL16
,
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE
, /* pc_relative */
1100 complain_overflow_signed
, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc
, /* special_function */
1102 "R_PPC_GOT_DTPREL16", /* name */
1103 FALSE
, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE
), /* pcrel_offset */
1108 /* Like GOT_DTPREL16, but no overflow. */
1109 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1111 1, /* size (0 = byte, 1 = short, 2 = long) */
1113 FALSE
, /* pc_relative */
1115 complain_overflow_dont
, /* complain_on_overflow */
1116 ppc_elf_unhandled_reloc
, /* special_function */
1117 "R_PPC_GOT_DTPREL16_LO", /* name */
1118 FALSE
, /* partial_inplace */
1120 0xffff, /* dst_mask */
1121 FALSE
), /* pcrel_offset */
1123 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1124 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1125 16, /* rightshift */
1126 1, /* size (0 = byte, 1 = short, 2 = long) */
1128 FALSE
, /* pc_relative */
1130 complain_overflow_dont
, /* complain_on_overflow */
1131 ppc_elf_unhandled_reloc
, /* special_function */
1132 "R_PPC_GOT_DTPREL16_HI", /* name */
1133 FALSE
, /* partial_inplace */
1135 0xffff, /* dst_mask */
1136 FALSE
), /* pcrel_offset */
1138 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1139 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1140 16, /* rightshift */
1141 1, /* size (0 = byte, 1 = short, 2 = long) */
1143 FALSE
, /* pc_relative */
1145 complain_overflow_dont
, /* complain_on_overflow */
1146 ppc_elf_unhandled_reloc
, /* special_function */
1147 "R_PPC_GOT_DTPREL16_HA", /* name */
1148 FALSE
, /* partial_inplace */
1150 0xffff, /* dst_mask */
1151 FALSE
), /* pcrel_offset */
1153 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1154 offset to the entry. */
1155 HOWTO (R_PPC_GOT_TPREL16
,
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 FALSE
, /* pc_relative */
1161 complain_overflow_signed
, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc
, /* special_function */
1163 "R_PPC_GOT_TPREL16", /* name */
1164 FALSE
, /* partial_inplace */
1166 0xffff, /* dst_mask */
1167 FALSE
), /* pcrel_offset */
1169 /* Like GOT_TPREL16, but no overflow. */
1170 HOWTO (R_PPC_GOT_TPREL16_LO
,
1172 1, /* size (0 = byte, 1 = short, 2 = long) */
1174 FALSE
, /* pc_relative */
1176 complain_overflow_dont
, /* complain_on_overflow */
1177 ppc_elf_unhandled_reloc
, /* special_function */
1178 "R_PPC_GOT_TPREL16_LO", /* name */
1179 FALSE
, /* partial_inplace */
1181 0xffff, /* dst_mask */
1182 FALSE
), /* pcrel_offset */
1184 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1185 HOWTO (R_PPC_GOT_TPREL16_HI
,
1186 16, /* rightshift */
1187 1, /* size (0 = byte, 1 = short, 2 = long) */
1189 FALSE
, /* pc_relative */
1191 complain_overflow_dont
, /* complain_on_overflow */
1192 ppc_elf_unhandled_reloc
, /* special_function */
1193 "R_PPC_GOT_TPREL16_HI", /* name */
1194 FALSE
, /* partial_inplace */
1196 0xffff, /* dst_mask */
1197 FALSE
), /* pcrel_offset */
1199 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1200 HOWTO (R_PPC_GOT_TPREL16_HA
,
1201 16, /* rightshift */
1202 1, /* size (0 = byte, 1 = short, 2 = long) */
1204 FALSE
, /* pc_relative */
1206 complain_overflow_dont
, /* complain_on_overflow */
1207 ppc_elf_unhandled_reloc
, /* special_function */
1208 "R_PPC_GOT_TPREL16_HA", /* name */
1209 FALSE
, /* partial_inplace */
1211 0xffff, /* dst_mask */
1212 FALSE
), /* pcrel_offset */
1214 /* The remaining relocs are from the Embedded ELF ABI, and are not
1215 in the SVR4 ELF ABI. */
1217 /* 32 bit value resulting from the addend minus the symbol. */
1218 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1220 2, /* size (0 = byte, 1 = short, 2 = long) */
1222 FALSE
, /* pc_relative */
1224 complain_overflow_bitfield
, /* complain_on_overflow */
1225 bfd_elf_generic_reloc
, /* special_function */
1226 "R_PPC_EMB_NADDR32", /* name */
1227 FALSE
, /* partial_inplace */
1229 0xffffffff, /* dst_mask */
1230 FALSE
), /* pcrel_offset */
1232 /* 16 bit value resulting from the addend minus the symbol. */
1233 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1235 1, /* size (0 = byte, 1 = short, 2 = long) */
1237 FALSE
, /* pc_relative */
1239 complain_overflow_bitfield
, /* complain_on_overflow */
1240 bfd_elf_generic_reloc
, /* special_function */
1241 "R_PPC_EMB_NADDR16", /* name */
1242 FALSE
, /* partial_inplace */
1244 0xffff, /* dst_mask */
1245 FALSE
), /* pcrel_offset */
1247 /* 16 bit value resulting from the addend minus the symbol. */
1248 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 FALSE
, /* pc_relative */
1254 complain_overflow_dont
,/* complain_on_overflow */
1255 bfd_elf_generic_reloc
, /* special_function */
1256 "R_PPC_EMB_ADDR16_LO", /* name */
1257 FALSE
, /* partial_inplace */
1259 0xffff, /* dst_mask */
1260 FALSE
), /* pcrel_offset */
1262 /* The high order 16 bits of the addend minus the symbol. */
1263 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1264 16, /* rightshift */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE
, /* pc_relative */
1269 complain_overflow_dont
, /* complain_on_overflow */
1270 bfd_elf_generic_reloc
, /* special_function */
1271 "R_PPC_EMB_NADDR16_HI", /* name */
1272 FALSE
, /* partial_inplace */
1274 0xffff, /* dst_mask */
1275 FALSE
), /* pcrel_offset */
1277 /* The high order 16 bits of the result of the addend minus the address,
1278 plus 1 if the contents of the low 16 bits, treated as a signed number,
1280 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE
, /* pc_relative */
1286 complain_overflow_dont
, /* complain_on_overflow */
1287 ppc_elf_addr16_ha_reloc
, /* special_function */
1288 "R_PPC_EMB_NADDR16_HA", /* name */
1289 FALSE
, /* partial_inplace */
1291 0xffff, /* dst_mask */
1292 FALSE
), /* pcrel_offset */
1294 /* 16 bit value resulting from allocating a 4 byte word to hold an
1295 address in the .sdata section, and returning the offset from
1296 _SDA_BASE_ for that relocation. */
1297 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE
, /* pc_relative */
1303 complain_overflow_bitfield
, /* complain_on_overflow */
1304 bfd_elf_generic_reloc
, /* special_function */
1305 "R_PPC_EMB_SDAI16", /* name */
1306 FALSE
, /* partial_inplace */
1308 0xffff, /* dst_mask */
1309 FALSE
), /* pcrel_offset */
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata2 section, and returning the offset from
1313 _SDA2_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1318 FALSE
, /* pc_relative */
1320 complain_overflow_bitfield
, /* complain_on_overflow */
1321 bfd_elf_generic_reloc
, /* special_function */
1322 "R_PPC_EMB_SDA2I16", /* name */
1323 FALSE
, /* partial_inplace */
1325 0xffff, /* dst_mask */
1326 FALSE
), /* pcrel_offset */
1328 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1329 small data items. */
1330 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 FALSE
, /* pc_relative */
1336 complain_overflow_signed
, /* complain_on_overflow */
1337 bfd_elf_generic_reloc
, /* special_function */
1338 "R_PPC_EMB_SDA2REL", /* name */
1339 FALSE
, /* partial_inplace */
1341 0xffff, /* dst_mask */
1342 FALSE
), /* pcrel_offset */
1344 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1345 signed offset from the appropriate base, and filling in the register
1346 field with the appropriate register (0, 2, or 13). */
1347 HOWTO (R_PPC_EMB_SDA21
, /* type */
1349 2, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE
, /* pc_relative */
1353 complain_overflow_signed
, /* complain_on_overflow */
1354 bfd_elf_generic_reloc
, /* special_function */
1355 "R_PPC_EMB_SDA21", /* name */
1356 FALSE
, /* partial_inplace */
1358 0xffff, /* dst_mask */
1359 FALSE
), /* pcrel_offset */
1361 /* Relocation not handled: R_PPC_EMB_MRKREF */
1362 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1363 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1364 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1365 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1366 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1368 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1369 in the 16 bit signed offset from the appropriate base, and filling in the
1370 register field with the appropriate register (0, 2, or 13). */
1371 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 TRUE
, /* pc_relative */
1377 complain_overflow_signed
, /* complain_on_overflow */
1378 bfd_elf_generic_reloc
, /* special_function */
1379 "R_PPC_EMB_RELSDA", /* name */
1380 FALSE
, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE
), /* pcrel_offset */
1385 HOWTO (R_PPC_IRELATIVE
, /* type */
1387 2, /* size (0 = byte, 1 = short, 2 = long) */
1389 FALSE
, /* pc_relative */
1391 complain_overflow_bitfield
, /* complain_on_overflow */
1392 bfd_elf_generic_reloc
, /* special_function */
1393 "R_PPC_IRELATIVE", /* name */
1394 FALSE
, /* partial_inplace */
1396 0xffffffff, /* dst_mask */
1397 FALSE
), /* pcrel_offset */
1399 /* A 16 bit relative relocation. */
1400 HOWTO (R_PPC_REL16
, /* type */
1402 1, /* size (0 = byte, 1 = short, 2 = long) */
1404 TRUE
, /* pc_relative */
1406 complain_overflow_bitfield
, /* complain_on_overflow */
1407 bfd_elf_generic_reloc
, /* special_function */
1408 "R_PPC_REL16", /* name */
1409 FALSE
, /* partial_inplace */
1411 0xffff, /* dst_mask */
1412 TRUE
), /* pcrel_offset */
1414 /* A 16 bit relative relocation without overflow. */
1415 HOWTO (R_PPC_REL16_LO
, /* type */
1417 1, /* size (0 = byte, 1 = short, 2 = long) */
1419 TRUE
, /* pc_relative */
1421 complain_overflow_dont
,/* complain_on_overflow */
1422 bfd_elf_generic_reloc
, /* special_function */
1423 "R_PPC_REL16_LO", /* name */
1424 FALSE
, /* partial_inplace */
1426 0xffff, /* dst_mask */
1427 TRUE
), /* pcrel_offset */
1429 /* The high order 16 bits of a relative address. */
1430 HOWTO (R_PPC_REL16_HI
, /* type */
1431 16, /* rightshift */
1432 1, /* size (0 = byte, 1 = short, 2 = long) */
1434 TRUE
, /* pc_relative */
1436 complain_overflow_dont
, /* complain_on_overflow */
1437 bfd_elf_generic_reloc
, /* special_function */
1438 "R_PPC_REL16_HI", /* name */
1439 FALSE
, /* partial_inplace */
1441 0xffff, /* dst_mask */
1442 TRUE
), /* pcrel_offset */
1444 /* The high order 16 bits of a relative address, plus 1 if the contents of
1445 the low 16 bits, treated as a signed number, is negative. */
1446 HOWTO (R_PPC_REL16_HA
, /* type */
1447 16, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 TRUE
, /* pc_relative */
1452 complain_overflow_dont
, /* complain_on_overflow */
1453 ppc_elf_addr16_ha_reloc
, /* special_function */
1454 "R_PPC_REL16_HA", /* name */
1455 FALSE
, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 TRUE
), /* pcrel_offset */
1460 /* GNU extension to record C++ vtable hierarchy. */
1461 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1463 0, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE
, /* pc_relative */
1467 complain_overflow_dont
, /* complain_on_overflow */
1468 NULL
, /* special_function */
1469 "R_PPC_GNU_VTINHERIT", /* name */
1470 FALSE
, /* partial_inplace */
1473 FALSE
), /* pcrel_offset */
1475 /* GNU extension to record C++ vtable member usage. */
1476 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1478 0, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE
, /* pc_relative */
1482 complain_overflow_dont
, /* complain_on_overflow */
1483 NULL
, /* special_function */
1484 "R_PPC_GNU_VTENTRY", /* name */
1485 FALSE
, /* partial_inplace */
1488 FALSE
), /* pcrel_offset */
1490 /* Phony reloc to handle AIX style TOC entries. */
1491 HOWTO (R_PPC_TOC16
, /* type */
1493 1, /* size (0 = byte, 1 = short, 2 = long) */
1495 FALSE
, /* pc_relative */
1497 complain_overflow_signed
, /* complain_on_overflow */
1498 bfd_elf_generic_reloc
, /* special_function */
1499 "R_PPC_TOC16", /* name */
1500 FALSE
, /* partial_inplace */
1502 0xffff, /* dst_mask */
1503 FALSE
), /* pcrel_offset */
1506 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1509 ppc_elf_howto_init (void)
1511 unsigned int i
, type
;
1514 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1517 type
= ppc_elf_howto_raw
[i
].type
;
1518 if (type
>= (sizeof (ppc_elf_howto_table
)
1519 / sizeof (ppc_elf_howto_table
[0])))
1521 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1525 static reloc_howto_type
*
1526 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1527 bfd_reloc_code_real_type code
)
1529 enum elf_ppc_reloc_type r
;
1531 /* Initialize howto table if not already done. */
1532 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1533 ppc_elf_howto_init ();
1540 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
1541 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
1542 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
1543 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
1544 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
1545 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
1546 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
1547 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
1548 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
1549 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
1550 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
1551 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
1552 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
1553 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
1554 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
1555 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
1556 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
1557 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
1558 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
1559 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
1560 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
1561 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
1562 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
1563 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
1564 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
1565 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
1566 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
1567 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
1568 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
1569 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
1570 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
1571 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
1572 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
1573 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
1574 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
1575 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
1576 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC_TLSGD
; break;
1577 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC_TLSLD
; break;
1578 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
1579 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
1580 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
1581 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
1582 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
1583 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
1584 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
1585 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
1586 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
1587 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
1588 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
1589 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
1590 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
1591 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
1592 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
1593 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
1594 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
1595 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
1596 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
1597 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
1598 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
1599 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
1600 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
1601 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
1602 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
1603 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
1604 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
1605 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
1606 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
1607 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
1608 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
1609 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
1610 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
1611 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
1612 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
1613 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
1614 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
1615 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
1616 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
1617 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
1618 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
1619 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
1620 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
1621 case BFD_RELOC_16_PCREL
: r
= R_PPC_REL16
; break;
1622 case BFD_RELOC_LO16_PCREL
: r
= R_PPC_REL16_LO
; break;
1623 case BFD_RELOC_HI16_PCREL
: r
= R_PPC_REL16_HI
; break;
1624 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC_REL16_HA
; break;
1625 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
1626 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
1629 return ppc_elf_howto_table
[r
];
1632 static reloc_howto_type
*
1633 ppc_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1639 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1641 if (ppc_elf_howto_raw
[i
].name
!= NULL
1642 && strcasecmp (ppc_elf_howto_raw
[i
].name
, r_name
) == 0)
1643 return &ppc_elf_howto_raw
[i
];
1648 /* Set the howto pointer for a PowerPC ELF reloc. */
1651 ppc_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1653 Elf_Internal_Rela
*dst
)
1655 /* Initialize howto table if not already done. */
1656 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1657 ppc_elf_howto_init ();
1659 BFD_ASSERT (ELF32_R_TYPE (dst
->r_info
) < (unsigned int) R_PPC_max
);
1660 cache_ptr
->howto
= ppc_elf_howto_table
[ELF32_R_TYPE (dst
->r_info
)];
1662 /* Just because the above assert didn't trigger doesn't mean that
1663 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1664 if (!cache_ptr
->howto
)
1666 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
1667 abfd
, ELF32_R_TYPE (dst
->r_info
));
1668 bfd_set_error (bfd_error_bad_value
);
1670 cache_ptr
->howto
= ppc_elf_howto_table
[R_PPC_NONE
];
1674 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1676 static bfd_reloc_status_type
1677 ppc_elf_addr16_ha_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
1678 arelent
*reloc_entry
,
1680 void *data ATTRIBUTE_UNUSED
,
1681 asection
*input_section
,
1683 char **error_message ATTRIBUTE_UNUSED
)
1687 if (output_bfd
!= NULL
)
1689 reloc_entry
->address
+= input_section
->output_offset
;
1690 return bfd_reloc_ok
;
1693 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
1694 return bfd_reloc_outofrange
;
1696 if (bfd_is_com_section (symbol
->section
))
1699 relocation
= symbol
->value
;
1701 relocation
+= symbol
->section
->output_section
->vma
;
1702 relocation
+= symbol
->section
->output_offset
;
1703 relocation
+= reloc_entry
->addend
;
1704 if (reloc_entry
->howto
->pc_relative
)
1705 relocation
-= reloc_entry
->address
;
1707 reloc_entry
->addend
+= (relocation
& 0x8000) << 1;
1709 return bfd_reloc_continue
;
1712 static bfd_reloc_status_type
1713 ppc_elf_unhandled_reloc (bfd
*abfd
,
1714 arelent
*reloc_entry
,
1717 asection
*input_section
,
1719 char **error_message
)
1721 /* If this is a relocatable link (output_bfd test tells us), just
1722 call the generic function. Any adjustment will be done at final
1724 if (output_bfd
!= NULL
)
1725 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
1726 input_section
, output_bfd
, error_message
);
1728 if (error_message
!= NULL
)
1730 static char buf
[60];
1731 sprintf (buf
, _("generic linker can't handle %s"),
1732 reloc_entry
->howto
->name
);
1733 *error_message
= buf
;
1735 return bfd_reloc_dangerous
;
1738 /* Sections created by the linker. */
1740 typedef struct elf_linker_section
1742 /* Pointer to the bfd section. */
1746 /* Associated bss section name. */
1747 const char *bss_name
;
1748 /* Associated symbol name. */
1749 const char *sym_name
;
1750 /* Associated symbol. */
1751 struct elf_link_hash_entry
*sym
;
1752 } elf_linker_section_t
;
1754 /* Linked list of allocated pointer entries. This hangs off of the
1755 symbol lists, and provides allows us to return different pointers,
1756 based on different addend's. */
1758 typedef struct elf_linker_section_pointers
1760 /* next allocated pointer for this symbol */
1761 struct elf_linker_section_pointers
*next
;
1762 /* offset of pointer from beginning of section */
1766 /* which linker section this is */
1767 elf_linker_section_t
*lsect
;
1768 } elf_linker_section_pointers_t
;
1770 struct ppc_elf_obj_tdata
1772 struct elf_obj_tdata elf
;
1774 /* A mapping from local symbols to offsets into the various linker
1775 sections added. This is index by the symbol index. */
1776 elf_linker_section_pointers_t
**linker_section_pointers
;
1778 /* Flags used to auto-detect plt type. */
1779 unsigned int makes_plt_call
: 1;
1780 unsigned int has_rel16
: 1;
1783 #define ppc_elf_tdata(bfd) \
1784 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1786 #define elf_local_ptr_offsets(bfd) \
1787 (ppc_elf_tdata (bfd)->linker_section_pointers)
1789 #define is_ppc_elf(bfd) \
1790 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1791 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1793 /* Override the generic function because we store some extras. */
1796 ppc_elf_mkobject (bfd
*abfd
)
1798 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
1802 /* Fix bad default arch selected for a 32 bit input bfd when the
1803 default is 64 bit. */
1806 ppc_elf_object_p (bfd
*abfd
)
1808 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 64)
1810 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
1812 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
1814 /* Relies on arch after 64 bit default being 32 bit default. */
1815 abfd
->arch_info
= abfd
->arch_info
->next
;
1816 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
1822 /* Function to set whether a module needs the -mrelocatable bit set. */
1825 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
1827 BFD_ASSERT (!elf_flags_init (abfd
)
1828 || elf_elfheader (abfd
)->e_flags
== flags
);
1830 elf_elfheader (abfd
)->e_flags
= flags
;
1831 elf_flags_init (abfd
) = TRUE
;
1835 /* Support for core dump NOTE sections. */
1838 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1843 switch (note
->descsz
)
1848 case 268: /* Linux/PPC. */
1850 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1853 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1862 /* Make a ".reg/999" section. */
1863 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1864 size
, note
->descpos
+ offset
);
1868 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1870 switch (note
->descsz
)
1875 case 128: /* Linux/PPC elf_prpsinfo. */
1876 elf_tdata (abfd
)->core_program
1877 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
1878 elf_tdata (abfd
)->core_command
1879 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
1882 /* Note that for some reason, a spurious space is tacked
1883 onto the end of the args in some (at least one anyway)
1884 implementations, so strip it off if it exists. */
1887 char *command
= elf_tdata (abfd
)->core_command
;
1888 int n
= strlen (command
);
1890 if (0 < n
&& command
[n
- 1] == ' ')
1891 command
[n
- 1] = '\0';
1898 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
1910 va_start (ap
, note_type
);
1911 memset (data
, 0, 32);
1912 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
1913 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
1915 return elfcore_write_note (abfd
, buf
, bufsiz
,
1916 "CORE", note_type
, data
, sizeof (data
));
1927 va_start (ap
, note_type
);
1928 memset (data
, 0, 72);
1929 pid
= va_arg (ap
, long);
1930 bfd_put_32 (abfd
, pid
, data
+ 24);
1931 cursig
= va_arg (ap
, int);
1932 bfd_put_16 (abfd
, cursig
, data
+ 12);
1933 greg
= va_arg (ap
, const void *);
1934 memcpy (data
+ 72, greg
, 192);
1935 memset (data
+ 264, 0, 4);
1937 return elfcore_write_note (abfd
, buf
, bufsiz
,
1938 "CORE", note_type
, data
, sizeof (data
));
1943 /* Return address for Ith PLT stub in section PLT, for relocation REL
1944 or (bfd_vma) -1 if it should not be included. */
1947 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
1948 const asection
*plt ATTRIBUTE_UNUSED
,
1951 return rel
->address
;
1954 /* Handle a PowerPC specific section when reading an object file. This
1955 is called when bfd_section_from_shdr finds a section with an unknown
1959 ppc_elf_section_from_shdr (bfd
*abfd
,
1960 Elf_Internal_Shdr
*hdr
,
1967 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
1970 newsect
= hdr
->bfd_section
;
1971 flags
= bfd_get_section_flags (abfd
, newsect
);
1972 if (hdr
->sh_flags
& SHF_EXCLUDE
)
1973 flags
|= SEC_EXCLUDE
;
1975 if (hdr
->sh_type
== SHT_ORDERED
)
1976 flags
|= SEC_SORT_ENTRIES
;
1978 bfd_set_section_flags (abfd
, newsect
, flags
);
1982 /* Set up any other section flags and such that may be necessary. */
1985 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1986 Elf_Internal_Shdr
*shdr
,
1989 if ((asect
->flags
& (SEC_GROUP
| SEC_EXCLUDE
)) == SEC_EXCLUDE
)
1990 shdr
->sh_flags
|= SHF_EXCLUDE
;
1992 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
1993 shdr
->sh_type
= SHT_ORDERED
;
1998 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1999 need to bump up the number of section headers. */
2002 ppc_elf_additional_program_headers (bfd
*abfd
,
2003 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2008 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2009 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2012 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2013 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2019 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2020 .PPC.EMB.sbss0 a normal section, and not a bss section so
2021 that the linker doesn't crater when trying to make more than
2024 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
2026 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
2027 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2028 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2029 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2030 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2031 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
2032 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE
, 0 },
2033 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2034 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2035 { NULL
, 0, 0, 0, 0 }
2038 /* This is what we want for new plt/got. */
2039 static struct bfd_elf_special_section ppc_alt_plt
=
2040 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
2042 static const struct bfd_elf_special_section
*
2043 ppc_elf_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
2045 const struct bfd_elf_special_section
*ssect
;
2047 /* See if this is one of the special sections. */
2048 if (sec
->name
== NULL
)
2051 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2055 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2056 ssect
= &ppc_alt_plt
;
2060 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2063 /* Very simple linked list structure for recording apuinfo values. */
2064 typedef struct apuinfo_list
2066 struct apuinfo_list
*next
;
2067 unsigned long value
;
2071 static apuinfo_list
*head
;
2075 apuinfo_list_init (void)
2081 apuinfo_list_add (unsigned long value
)
2083 apuinfo_list
*entry
= head
;
2085 while (entry
!= NULL
)
2087 if (entry
->value
== value
)
2089 entry
= entry
->next
;
2092 entry
= bfd_malloc (sizeof (* entry
));
2096 entry
->value
= value
;
2102 apuinfo_list_length (void)
2104 apuinfo_list
*entry
;
2105 unsigned long count
;
2107 for (entry
= head
, count
= 0;
2109 entry
= entry
->next
)
2115 static inline unsigned long
2116 apuinfo_list_element (unsigned long number
)
2118 apuinfo_list
* entry
;
2122 entry
= entry
->next
)
2125 return entry
? entry
->value
: 0;
2129 apuinfo_list_finish (void)
2131 apuinfo_list
*entry
;
2133 for (entry
= head
; entry
;)
2135 apuinfo_list
*next
= entry
->next
;
2143 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2144 #define APUINFO_LABEL "APUinfo"
2146 /* Scan the input BFDs and create a linked list of
2147 the APUinfo values that will need to be emitted. */
2150 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2155 unsigned num_input_sections
;
2156 bfd_size_type output_section_size
;
2158 unsigned num_entries
;
2159 unsigned long offset
;
2160 unsigned long length
;
2161 const char *error_message
= NULL
;
2163 if (link_info
== NULL
)
2166 /* Scan the input bfds, looking for apuinfo sections. */
2167 num_input_sections
= 0;
2168 output_section_size
= 0;
2170 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2172 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2175 ++ num_input_sections
;
2176 output_section_size
+= asec
->size
;
2180 /* We need at least one input sections
2181 in order to make merging worthwhile. */
2182 if (num_input_sections
< 1)
2185 /* Just make sure that the output section exists as well. */
2186 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2190 /* Allocate a buffer for the contents of the input sections. */
2191 buffer
= bfd_malloc (output_section_size
);
2196 apuinfo_list_init ();
2198 /* Read in the input sections contents. */
2199 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2201 unsigned long datum
;
2204 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2208 length
= asec
->size
;
2211 error_message
= _("corrupt or empty %s section in %B");
2215 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2216 || (bfd_bread (buffer
+ offset
, length
, ibfd
) != length
))
2218 error_message
= _("unable to read in %s section from %B");
2222 /* Process the contents of the section. */
2223 ptr
= buffer
+ offset
;
2224 error_message
= _("corrupt %s section in %B");
2226 /* Verify the contents of the header. Note - we have to
2227 extract the values this way in order to allow for a
2228 host whose endian-ness is different from the target. */
2229 datum
= bfd_get_32 (ibfd
, ptr
);
2230 if (datum
!= sizeof APUINFO_LABEL
)
2233 datum
= bfd_get_32 (ibfd
, ptr
+ 8);
2237 if (strcmp (ptr
+ 12, APUINFO_LABEL
) != 0)
2240 /* Get the number of bytes used for apuinfo entries. */
2241 datum
= bfd_get_32 (ibfd
, ptr
+ 4);
2242 if (datum
+ 20 != length
)
2245 /* Make sure that we do not run off the end of the section. */
2246 if (offset
+ length
> output_section_size
)
2249 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2250 for (i
= 0; i
< datum
; i
+= 4)
2251 apuinfo_list_add (bfd_get_32 (ibfd
, ptr
+ 20 + i
));
2253 /* Update the offset. */
2257 error_message
= NULL
;
2259 /* Compute the size of the output section. */
2260 num_entries
= apuinfo_list_length ();
2261 output_section_size
= 20 + num_entries
* 4;
2263 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2265 if (! bfd_set_section_size (abfd
, asec
, output_section_size
))
2267 error_message
= _("warning: unable to set size of %s section in %B");
2273 (*_bfd_error_handler
) (error_message
, ibfd
, APUINFO_SECTION_NAME
);
2276 /* Prevent the output section from accumulating the input sections'
2277 contents. We have already stored this in our linked list structure. */
2280 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2281 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2283 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2285 return (apuinfo_list_length ()
2286 && strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0);
2289 /* Finally we can generate the output section. */
2292 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2297 unsigned num_entries
;
2298 bfd_size_type length
;
2300 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2304 if (apuinfo_list_length () == 0)
2307 length
= asec
->size
;
2311 buffer
= bfd_malloc (length
);
2314 (*_bfd_error_handler
)
2315 (_("failed to allocate space for new APUinfo section."));
2319 /* Create the apuinfo header. */
2320 num_entries
= apuinfo_list_length ();
2321 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2322 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2323 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2324 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2327 for (i
= 0; i
< num_entries
; i
++)
2329 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2333 if (length
!= asec
->size
)
2334 (*_bfd_error_handler
) (_("failed to compute new APUinfo section."));
2336 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2337 (*_bfd_error_handler
) (_("failed to install new APUinfo section."));
2341 apuinfo_list_finish ();
2345 is_nonpic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2347 bfd_byte buf
[GLINK_ENTRY_SIZE
];
2349 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, GLINK_ENTRY_SIZE
))
2352 return ((bfd_get_32 (abfd
, buf
+ 0) & 0xffff0000) == LIS_11
2353 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2354 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
2355 && bfd_get_32 (abfd
, buf
+ 12) == BCTR
);
2359 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2361 bfd_vma vma
= *(bfd_vma
*) ptr
;
2362 return ((section
->flags
& SEC_ALLOC
) != 0
2363 && section
->vma
<= vma
2364 && vma
< section
->vma
+ section
->size
);
2368 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2369 long dynsymcount
, asymbol
**dynsyms
,
2372 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2373 asection
*plt
, *relplt
, *dynamic
, *glink
;
2374 bfd_vma glink_vma
= 0;
2375 bfd_vma resolv_vma
= 0;
2386 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2389 if (dynsymcount
<= 0)
2392 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2396 plt
= bfd_get_section_by_name (abfd
, ".plt");
2400 /* Call common code to handle old-style executable PLTs. */
2401 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2402 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2403 dynsymcount
, dynsyms
, ret
);
2405 /* If this object was prelinked, the prelinker stored the address
2406 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2407 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2408 if (dynamic
!= NULL
)
2410 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2412 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2414 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2417 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2418 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2421 extdynend
= extdyn
+ dynamic
->size
;
2422 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2424 Elf_Internal_Dyn dyn
;
2425 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2427 if (dyn
.d_tag
== DT_NULL
)
2430 if (dyn
.d_tag
== DT_PPC_GOT
)
2432 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2433 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2435 && bfd_get_section_contents (abfd
, got
, buf
,
2436 g_o_t
- got
->vma
+ 4, 4))
2437 glink_vma
= bfd_get_32 (abfd
, buf
);
2444 /* Otherwise we read the first plt entry. */
2447 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
2448 glink_vma
= bfd_get_32 (abfd
, buf
);
2454 /* The .glink section usually does not survive the final
2455 link; search for the section (usually .text) where the
2456 glink stubs now reside. */
2457 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
2461 /* Determine glink PLT resolver by reading the relative branch
2462 from the first glink stub. */
2463 if (bfd_get_section_contents (abfd
, glink
, buf
,
2464 glink_vma
- glink
->vma
, 4))
2466 unsigned int insn
= bfd_get_32 (abfd
, buf
);
2468 /* The first glink stub may either branch to the resolver ... */
2470 if ((insn
& ~0x3fffffc) == 0)
2471 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
2473 /* ... or fall through a bunch of NOPs. */
2474 else if ((insn
^ B
^ NOP
) == 0)
2476 bfd_get_section_contents (abfd
, glink
, buf
,
2477 glink_vma
- glink
->vma
+ i
, 4);
2479 if (bfd_get_32 (abfd
, buf
) != NOP
)
2481 resolv_vma
= glink_vma
+ i
;
2486 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
2487 stub_vma
= glink_vma
- (bfd_vma
) count
* 16;
2488 /* If the stubs are those for -shared/-pie then we might have
2489 multiple stubs for each plt entry. If that is the case then
2490 there is no way to associate stubs with their plt entries short
2491 of figuring out the GOT pointer value used in the stub. */
2492 if (!is_nonpic_glink_stub (abfd
, glink
,
2493 glink_vma
- GLINK_ENTRY_SIZE
- glink
->vma
))
2496 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2497 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
2500 size
= count
* sizeof (asymbol
);
2501 p
= relplt
->relocation
;
2502 for (i
= 0; i
< count
; i
++, p
++)
2504 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
2506 size
+= sizeof ("+0x") - 1 + 8;
2509 size
+= sizeof (asymbol
) + sizeof ("__glink");
2512 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
2514 s
= *ret
= bfd_malloc (size
);
2518 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
2519 p
= relplt
->relocation
;
2520 for (i
= 0; i
< count
; i
++, p
++)
2524 *s
= **p
->sym_ptr_ptr
;
2525 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2526 we are defining a symbol, ensure one of them is set. */
2527 if ((s
->flags
& BSF_LOCAL
) == 0)
2528 s
->flags
|= BSF_GLOBAL
;
2529 s
->flags
|= BSF_SYNTHETIC
;
2531 s
->value
= stub_vma
- glink
->vma
;
2534 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
2535 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
2539 memcpy (names
, "+0x", sizeof ("+0x") - 1);
2540 names
+= sizeof ("+0x") - 1;
2541 bfd_sprintf_vma (abfd
, names
, p
->addend
);
2542 names
+= strlen (names
);
2544 memcpy (names
, "@plt", sizeof ("@plt"));
2545 names
+= sizeof ("@plt");
2550 /* Add a symbol at the start of the glink branch table. */
2551 memset (s
, 0, sizeof *s
);
2553 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
2555 s
->value
= glink_vma
- glink
->vma
;
2557 memcpy (names
, "__glink", sizeof ("__glink"));
2558 names
+= sizeof ("__glink");
2564 /* Add a symbol for the glink PLT resolver. */
2565 memset (s
, 0, sizeof *s
);
2567 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
2569 s
->value
= resolv_vma
- glink
->vma
;
2571 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2572 names
+= sizeof ("__glink_PLTresolve");
2580 /* The following functions are specific to the ELF linker, while
2581 functions above are used generally. They appear in this file more
2582 or less in the order in which they are called. eg.
2583 ppc_elf_check_relocs is called early in the link process,
2584 ppc_elf_finish_dynamic_sections is one of the last functions
2587 /* The PPC linker needs to keep track of the number of relocs that it
2588 decides to copy as dynamic relocs in check_relocs for each symbol.
2589 This is so that it can later discard them if they are found to be
2590 unnecessary. We store the information in a field extending the
2591 regular ELF linker hash table. */
2593 struct ppc_elf_dyn_relocs
2595 struct ppc_elf_dyn_relocs
*next
;
2597 /* The input section of the reloc. */
2600 /* Total number of relocs copied for the input section. */
2601 bfd_size_type count
;
2603 /* Number of pc-relative relocs copied for the input section. */
2604 bfd_size_type pc_count
;
2607 /* Track PLT entries needed for a given symbol. We might need more
2608 than one glink entry per symbol. */
2611 struct plt_entry
*next
;
2613 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2614 This field stores the offset into .got2 used to initialise the
2615 GOT pointer reg. It will always be at least 32768 (and for
2616 current gcc this is the only offset used). */
2619 /* The .got2 section. */
2622 /* PLT refcount or offset. */
2625 bfd_signed_vma refcount
;
2629 /* .glink stub offset. */
2630 bfd_vma glink_offset
;
2633 /* Of those relocs that might be copied as dynamic relocs, this function
2634 selects those that must be copied when linking a shared library,
2635 even when the symbol is local. */
2638 must_be_dyn_reloc (struct bfd_link_info
*info
,
2639 enum elf_ppc_reloc_type r_type
)
2648 case R_PPC_REL14_BRTAKEN
:
2649 case R_PPC_REL14_BRNTAKEN
:
2655 case R_PPC_TPREL16_LO
:
2656 case R_PPC_TPREL16_HI
:
2657 case R_PPC_TPREL16_HA
:
2658 return !info
->executable
;
2662 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2663 copying dynamic variables from a shared lib into an app's dynbss
2664 section, and instead use a dynamic relocation to point into the
2666 #define ELIMINATE_COPY_RELOCS 1
2668 /* PPC ELF linker hash entry. */
2670 struct ppc_elf_link_hash_entry
2672 struct elf_link_hash_entry elf
;
2674 /* If this symbol is used in the linker created sections, the processor
2675 specific backend uses this field to map the field into the offset
2676 from the beginning of the section. */
2677 elf_linker_section_pointers_t
*linker_section_pointer
;
2679 /* Track dynamic relocs copied for this symbol. */
2680 struct ppc_elf_dyn_relocs
*dyn_relocs
;
2682 /* Contexts in which symbol is used in the GOT (or TOC).
2683 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2684 corresponding relocs are encountered during check_relocs.
2685 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2686 indicate the corresponding GOT entry type is not needed. */
2687 #define TLS_GD 1 /* GD reloc. */
2688 #define TLS_LD 2 /* LD reloc. */
2689 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2690 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2691 #define TLS_TLS 16 /* Any TLS reloc. */
2692 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2693 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
2696 /* Nonzero if we have seen a small data relocation referring to this
2698 unsigned char has_sda_refs
;
2701 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2703 /* PPC ELF linker hash table. */
2705 struct ppc_elf_link_hash_table
2707 struct elf_link_hash_table elf
;
2709 /* Short-cuts to get to dynamic linker sections. */
2721 elf_linker_section_t sdata
[2];
2724 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2727 /* The .got.plt section (VxWorks only)*/
2730 /* Shortcut to __tls_get_addr. */
2731 struct elf_link_hash_entry
*tls_get_addr
;
2733 /* The bfd that forced an old-style PLT. */
2736 /* TLS local dynamic got entry handling. */
2738 bfd_signed_vma refcount
;
2742 /* Offset of branch table to PltResolve function in glink. */
2743 bfd_vma glink_pltresolve
;
2745 /* Size of reserved GOT entries. */
2746 unsigned int got_header_size
;
2747 /* Non-zero if allocating the header left a gap. */
2748 unsigned int got_gap
;
2750 /* The type of PLT we have chosen to use. */
2751 enum ppc_elf_plt_type plt_type
;
2753 /* Set if we should emit symbols for stubs. */
2754 unsigned int emit_stub_syms
:1;
2756 /* True if the target system is VxWorks. */
2757 unsigned int is_vxworks
:1;
2759 /* The size of PLT entries. */
2761 /* The distance between adjacent PLT slots. */
2763 /* The size of the first PLT entry. */
2764 int plt_initial_entry_size
;
2766 /* Small local sym cache. */
2767 struct sym_cache sym_cache
;
2770 /* Get the PPC ELF linker hash table from a link_info structure. */
2772 #define ppc_elf_hash_table(p) \
2773 ((struct ppc_elf_link_hash_table *) (p)->hash)
2775 /* Create an entry in a PPC ELF linker hash table. */
2777 static struct bfd_hash_entry
*
2778 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2779 struct bfd_hash_table
*table
,
2782 /* Allocate the structure if it has not already been allocated by a
2786 entry
= bfd_hash_allocate (table
,
2787 sizeof (struct ppc_elf_link_hash_entry
));
2792 /* Call the allocation method of the superclass. */
2793 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
2796 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
2797 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
2798 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
2804 /* Create a PPC ELF linker hash table. */
2806 static struct bfd_link_hash_table
*
2807 ppc_elf_link_hash_table_create (bfd
*abfd
)
2809 struct ppc_elf_link_hash_table
*ret
;
2811 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
2815 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
2816 ppc_elf_link_hash_newfunc
,
2817 sizeof (struct ppc_elf_link_hash_entry
)))
2823 ret
->elf
.init_plt_refcount
.refcount
= 0;
2824 ret
->elf
.init_plt_refcount
.glist
= NULL
;
2825 ret
->elf
.init_plt_offset
.offset
= 0;
2826 ret
->elf
.init_plt_offset
.glist
= NULL
;
2828 ret
->sdata
[0].name
= ".sdata";
2829 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
2830 ret
->sdata
[0].bss_name
= ".sbss";
2832 ret
->sdata
[1].name
= ".sdata2";
2833 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
2834 ret
->sdata
[1].bss_name
= ".sbss2";
2836 ret
->plt_entry_size
= 12;
2837 ret
->plt_slot_size
= 8;
2838 ret
->plt_initial_entry_size
= 72;
2840 return &ret
->elf
.root
;
2843 /* Create .got and the related sections. */
2846 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
2848 struct ppc_elf_link_hash_table
*htab
;
2852 if (!_bfd_elf_create_got_section (abfd
, info
))
2855 htab
= ppc_elf_hash_table (info
);
2856 htab
->got
= s
= bfd_get_section_by_name (abfd
, ".got");
2860 if (htab
->is_vxworks
)
2862 htab
->sgotplt
= bfd_get_section_by_name (abfd
, ".got.plt");
2868 /* The powerpc .got has a blrl instruction in it. Mark it
2870 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
2871 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2872 if (!bfd_set_section_flags (abfd
, s
, flags
))
2876 htab
->relgot
= bfd_get_section_by_name (abfd
, ".rela.got");
2884 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
2886 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
2890 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
2891 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2892 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
2895 || !bfd_set_section_alignment (abfd
, s
, 4))
2898 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
2899 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
2902 || !bfd_set_section_alignment (abfd
, s
, 4))
2905 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
2906 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2907 s
= bfd_make_section_with_flags (abfd
, ".rela.iplt", flags
);
2910 || ! bfd_set_section_alignment (abfd
, s
, 2))
2915 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2916 to output sections (just like _bfd_elf_create_dynamic_sections has
2917 to create .dynbss and .rela.bss). */
2920 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2922 struct ppc_elf_link_hash_table
*htab
;
2926 htab
= ppc_elf_hash_table (info
);
2928 if (htab
->got
== NULL
2929 && !ppc_elf_create_got (abfd
, info
))
2932 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
2935 if (htab
->glink
== NULL
2936 && !ppc_elf_create_glink (abfd
, info
))
2939 htab
->dynbss
= bfd_get_section_by_name (abfd
, ".dynbss");
2940 s
= bfd_make_section_with_flags (abfd
, ".dynsbss",
2941 SEC_ALLOC
| SEC_LINKER_CREATED
);
2948 htab
->relbss
= bfd_get_section_by_name (abfd
, ".rela.bss");
2949 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
2950 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2951 s
= bfd_make_section_with_flags (abfd
, ".rela.sbss", flags
);
2954 || ! bfd_set_section_alignment (abfd
, s
, 2))
2958 if (htab
->is_vxworks
2959 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
2962 htab
->relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2963 htab
->plt
= s
= bfd_get_section_by_name (abfd
, ".plt");
2967 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
2968 if (htab
->plt_type
== PLT_VXWORKS
)
2969 /* The VxWorks PLT is a loaded section with contents. */
2970 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
2971 return bfd_set_section_flags (abfd
, s
, flags
);
2974 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2977 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2978 struct elf_link_hash_entry
*dir
,
2979 struct elf_link_hash_entry
*ind
)
2981 struct ppc_elf_link_hash_entry
*edir
, *eind
;
2983 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
2984 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
2986 if (eind
->dyn_relocs
!= NULL
)
2988 if (edir
->dyn_relocs
!= NULL
)
2990 struct ppc_elf_dyn_relocs
**pp
;
2991 struct ppc_elf_dyn_relocs
*p
;
2993 /* Add reloc counts against the indirect sym to the direct sym
2994 list. Merge any entries against the same section. */
2995 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
2997 struct ppc_elf_dyn_relocs
*q
;
2999 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3000 if (q
->sec
== p
->sec
)
3002 q
->pc_count
+= p
->pc_count
;
3003 q
->count
+= p
->count
;
3010 *pp
= edir
->dyn_relocs
;
3013 edir
->dyn_relocs
= eind
->dyn_relocs
;
3014 eind
->dyn_relocs
= NULL
;
3017 edir
->tls_mask
|= eind
->tls_mask
;
3018 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3020 /* If called to transfer flags for a weakdef during processing
3021 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3022 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3023 if (!(ELIMINATE_COPY_RELOCS
3024 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3025 && edir
->elf
.dynamic_adjusted
))
3026 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3028 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3029 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3030 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3031 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3032 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3034 /* If we were called to copy over info for a weak sym, that's all. */
3035 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3038 /* Copy over the GOT refcount entries that we may have already seen to
3039 the symbol which just became indirect. */
3040 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3041 eind
->elf
.got
.refcount
= 0;
3043 /* And plt entries. */
3044 if (eind
->elf
.plt
.plist
!= NULL
)
3046 if (edir
->elf
.plt
.plist
!= NULL
)
3048 struct plt_entry
**entp
;
3049 struct plt_entry
*ent
;
3051 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3053 struct plt_entry
*dent
;
3055 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3056 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3058 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3065 *entp
= edir
->elf
.plt
.plist
;
3068 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3069 eind
->elf
.plt
.plist
= NULL
;
3072 if (eind
->elf
.dynindx
!= -1)
3074 if (edir
->elf
.dynindx
!= -1)
3075 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3076 edir
->elf
.dynstr_index
);
3077 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3078 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3079 eind
->elf
.dynindx
= -1;
3080 eind
->elf
.dynstr_index
= 0;
3084 /* Hook called by the linker routine which adds symbols from an object
3085 file. We use it to put .comm items in .sbss, and not .bss. */
3088 ppc_elf_add_symbol_hook (bfd
*abfd
,
3089 struct bfd_link_info
*info
,
3090 Elf_Internal_Sym
*sym
,
3091 const char **namep ATTRIBUTE_UNUSED
,
3092 flagword
*flagsp ATTRIBUTE_UNUSED
,
3096 if (sym
->st_shndx
== SHN_COMMON
3097 && !info
->relocatable
3098 && is_ppc_elf (info
->output_bfd
)
3099 && sym
->st_size
<= elf_gp_size (abfd
))
3101 /* Common symbols less than or equal to -G nn bytes are automatically
3103 struct ppc_elf_link_hash_table
*htab
;
3105 htab
= ppc_elf_hash_table (info
);
3106 if (htab
->sbss
== NULL
)
3108 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3110 if (!htab
->elf
.dynobj
)
3111 htab
->elf
.dynobj
= abfd
;
3113 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3116 if (htab
->sbss
== NULL
)
3121 *valp
= sym
->st_size
;
3124 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
3125 elf_tdata (info
->output_bfd
)->has_ifunc_symbols
= TRUE
;
3131 create_sdata_sym (struct ppc_elf_link_hash_table
*htab
,
3132 elf_linker_section_t
*lsect
)
3134 lsect
->sym
= elf_link_hash_lookup (&htab
->elf
, lsect
->sym_name
,
3136 if (lsect
->sym
== NULL
)
3138 if (lsect
->sym
->root
.type
== bfd_link_hash_new
)
3139 lsect
->sym
->non_elf
= 0;
3140 lsect
->sym
->ref_regular
= 1;
3144 /* Create a special linker section. */
3147 ppc_elf_create_linker_section (bfd
*abfd
,
3148 struct bfd_link_info
*info
,
3150 elf_linker_section_t
*lsect
)
3152 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3155 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3156 | SEC_LINKER_CREATED
);
3158 /* Record the first bfd that needs the special sections. */
3159 if (!htab
->elf
.dynobj
)
3160 htab
->elf
.dynobj
= abfd
;
3162 s
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3166 || !bfd_set_section_alignment (htab
->elf
.dynobj
, s
, 2))
3170 return create_sdata_sym (htab
, lsect
);
3173 /* Find a linker generated pointer with a given addend and type. */
3175 static elf_linker_section_pointers_t
*
3176 elf_find_pointer_linker_section
3177 (elf_linker_section_pointers_t
*linker_pointers
,
3179 elf_linker_section_t
*lsect
)
3181 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3182 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3183 return linker_pointers
;
3188 /* Allocate a pointer to live in a linker created section. */
3191 elf_create_pointer_linker_section (bfd
*abfd
,
3192 elf_linker_section_t
*lsect
,
3193 struct elf_link_hash_entry
*h
,
3194 const Elf_Internal_Rela
*rel
)
3196 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3197 elf_linker_section_pointers_t
*linker_section_ptr
;
3198 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3201 BFD_ASSERT (lsect
!= NULL
);
3203 /* Is this a global symbol? */
3206 struct ppc_elf_link_hash_entry
*eh
;
3208 /* Has this symbol already been allocated? If so, our work is done. */
3209 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3210 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3215 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3219 BFD_ASSERT (is_ppc_elf (abfd
));
3221 /* Allocation of a pointer to a local symbol. */
3222 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3224 /* Allocate a table to hold the local symbols if first time. */
3227 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3230 amt
*= sizeof (elf_linker_section_pointers_t
*);
3231 ptr
= bfd_zalloc (abfd
, amt
);
3236 elf_local_ptr_offsets (abfd
) = ptr
;
3239 /* Has this symbol already been allocated? If so, our work is done. */
3240 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3245 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3248 /* Allocate space for a pointer in the linker section, and allocate
3249 a new pointer record from internal memory. */
3250 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3251 amt
= sizeof (elf_linker_section_pointers_t
);
3252 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3254 if (!linker_section_ptr
)
3257 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3258 linker_section_ptr
->addend
= rel
->r_addend
;
3259 linker_section_ptr
->lsect
= lsect
;
3260 *ptr_linker_section_ptr
= linker_section_ptr
;
3262 linker_section_ptr
->offset
= lsect
->section
->size
;
3263 lsect
->section
->size
+= 4;
3267 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3268 lsect
->name
, (long) linker_section_ptr
->offset
,
3269 (long) lsect
->section
->size
);
3275 static struct plt_entry
**
3276 update_local_sym_info (bfd
*abfd
,
3277 Elf_Internal_Shdr
*symtab_hdr
,
3278 unsigned long r_symndx
,
3281 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3282 struct plt_entry
**local_plt
;
3283 char *local_got_tls_masks
;
3285 if (local_got_refcounts
== NULL
)
3287 bfd_size_type size
= symtab_hdr
->sh_info
;
3289 size
*= (sizeof (*local_got_refcounts
)
3290 + sizeof (*local_plt
)
3291 + sizeof (*local_got_tls_masks
));
3292 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3293 if (local_got_refcounts
== NULL
)
3295 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3298 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3299 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3300 local_got_tls_masks
[r_symndx
] |= tls_type
;
3301 if (tls_type
!= PLT_IFUNC
)
3302 local_got_refcounts
[r_symndx
] += 1;
3303 return local_plt
+ r_symndx
;
3307 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3308 asection
*sec
, bfd_vma addend
)
3310 struct plt_entry
*ent
;
3312 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3313 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3317 bfd_size_type amt
= sizeof (*ent
);
3318 ent
= bfd_alloc (abfd
, amt
);
3323 ent
->addend
= addend
;
3324 ent
->plt
.refcount
= 0;
3327 ent
->plt
.refcount
+= 1;
3331 static struct plt_entry
*
3332 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3334 struct plt_entry
*ent
;
3338 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3339 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3345 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3347 return (r_type
== R_PPC_PLTREL24
3348 || r_type
== R_PPC_LOCAL24PC
3349 || r_type
== R_PPC_REL24
3350 || r_type
== R_PPC_REL14
3351 || r_type
== R_PPC_REL14_BRTAKEN
3352 || r_type
== R_PPC_REL14_BRNTAKEN
3353 || r_type
== R_PPC_ADDR24
3354 || r_type
== R_PPC_ADDR14
3355 || r_type
== R_PPC_ADDR14_BRTAKEN
3356 || r_type
== R_PPC_ADDR14_BRNTAKEN
);
3360 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3362 (*_bfd_error_handler
)
3363 (_("%B: relocation %s cannot be used when making a shared object"),
3365 ppc_elf_howto_table
[r_type
]->name
);
3366 bfd_set_error (bfd_error_bad_value
);
3369 /* Look through the relocs for a section during the first phase, and
3370 allocate space in the global offset table or procedure linkage
3374 ppc_elf_check_relocs (bfd
*abfd
,
3375 struct bfd_link_info
*info
,
3377 const Elf_Internal_Rela
*relocs
)
3379 struct ppc_elf_link_hash_table
*htab
;
3380 Elf_Internal_Shdr
*symtab_hdr
;
3381 struct elf_link_hash_entry
**sym_hashes
;
3382 const Elf_Internal_Rela
*rel
;
3383 const Elf_Internal_Rela
*rel_end
;
3384 asection
*got2
, *sreloc
;
3385 struct elf_link_hash_entry
*tga
;
3387 if (info
->relocatable
)
3390 /* Don't do anything special with non-loaded, non-alloced sections.
3391 In particular, any relocs in such sections should not affect GOT
3392 and PLT reference counting (ie. we don't allow them to create GOT
3393 or PLT entries), there's no possibility or desire to optimize TLS
3394 relocs, and there's not much point in propagating relocs to shared
3395 libs that the dynamic linker won't relocate. */
3396 if ((sec
->flags
& SEC_ALLOC
) == 0)
3400 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3404 BFD_ASSERT (is_ppc_elf (abfd
));
3406 /* Initialize howto table if not already done. */
3407 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3408 ppc_elf_howto_init ();
3410 htab
= ppc_elf_hash_table (info
);
3411 if (htab
->glink
== NULL
)
3413 if (htab
->elf
.dynobj
== NULL
)
3414 htab
->elf
.dynobj
= abfd
;
3415 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
3418 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3419 FALSE
, FALSE
, TRUE
);
3420 symtab_hdr
= &elf_symtab_hdr (abfd
);
3421 sym_hashes
= elf_sym_hashes (abfd
);
3422 got2
= bfd_get_section_by_name (abfd
, ".got2");
3425 rel_end
= relocs
+ sec
->reloc_count
;
3426 for (rel
= relocs
; rel
< rel_end
; rel
++)
3428 unsigned long r_symndx
;
3429 enum elf_ppc_reloc_type r_type
;
3430 struct elf_link_hash_entry
*h
;
3432 struct plt_entry
**ifunc
;
3434 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3435 if (r_symndx
< symtab_hdr
->sh_info
)
3439 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3440 while (h
->root
.type
== bfd_link_hash_indirect
3441 || h
->root
.type
== bfd_link_hash_warning
)
3442 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3445 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3446 This shows up in particular in an R_PPC_ADDR32 in the eabi
3449 && htab
->got
== NULL
3450 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3452 if (htab
->elf
.dynobj
== NULL
)
3453 htab
->elf
.dynobj
= abfd
;
3454 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3456 BFD_ASSERT (h
== htab
->elf
.hgot
);
3461 r_type
= ELF32_R_TYPE (rel
->r_info
);
3462 if (!htab
->is_vxworks
)
3466 if (h
->type
== STT_GNU_IFUNC
)
3467 ifunc
= &h
->plt
.plist
;
3471 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3476 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
3478 || is_branch_reloc (r_type
)))
3482 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
3487 /* STT_GNU_IFUNC symbols must have a PLT entry;
3488 In a non-pie executable even when there are
3491 if (r_type
== R_PPC_PLTREL24
)
3493 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
3494 addend
= rel
->r_addend
;
3496 if (!update_plt_info (abfd
, ifunc
,
3497 addend
< 32768 ? NULL
: got2
, addend
))
3503 if (!htab
->is_vxworks
3504 && is_branch_reloc (r_type
)
3509 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
3510 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
3511 /* We have a new-style __tls_get_addr call with a marker
3515 /* Mark this section as having an old-style call. */
3516 sec
->has_tls_get_addr_call
= 1;
3523 /* These special tls relocs tie a call to __tls_get_addr with
3524 its parameter symbol. */
3527 case R_PPC_GOT_TLSLD16
:
3528 case R_PPC_GOT_TLSLD16_LO
:
3529 case R_PPC_GOT_TLSLD16_HI
:
3530 case R_PPC_GOT_TLSLD16_HA
:
3531 tls_type
= TLS_TLS
| TLS_LD
;
3534 case R_PPC_GOT_TLSGD16
:
3535 case R_PPC_GOT_TLSGD16_LO
:
3536 case R_PPC_GOT_TLSGD16_HI
:
3537 case R_PPC_GOT_TLSGD16_HA
:
3538 tls_type
= TLS_TLS
| TLS_GD
;
3541 case R_PPC_GOT_TPREL16
:
3542 case R_PPC_GOT_TPREL16_LO
:
3543 case R_PPC_GOT_TPREL16_HI
:
3544 case R_PPC_GOT_TPREL16_HA
:
3545 if (!info
->executable
)
3546 info
->flags
|= DF_STATIC_TLS
;
3547 tls_type
= TLS_TLS
| TLS_TPREL
;
3550 case R_PPC_GOT_DTPREL16
:
3551 case R_PPC_GOT_DTPREL16_LO
:
3552 case R_PPC_GOT_DTPREL16_HI
:
3553 case R_PPC_GOT_DTPREL16_HA
:
3554 tls_type
= TLS_TLS
| TLS_DTPREL
;
3556 sec
->has_tls_reloc
= 1;
3559 /* GOT16 relocations */
3561 case R_PPC_GOT16_LO
:
3562 case R_PPC_GOT16_HI
:
3563 case R_PPC_GOT16_HA
:
3564 /* This symbol requires a global offset table entry. */
3565 if (htab
->got
== NULL
)
3567 if (htab
->elf
.dynobj
== NULL
)
3568 htab
->elf
.dynobj
= abfd
;
3569 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3574 h
->got
.refcount
+= 1;
3575 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
3578 /* This is a global offset table entry for a local symbol. */
3579 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
3583 /* Indirect .sdata relocation. */
3584 case R_PPC_EMB_SDAI16
:
3587 bad_shared_reloc (abfd
, r_type
);
3590 if (htab
->sdata
[0].section
== NULL
3591 && !ppc_elf_create_linker_section (abfd
, info
, 0,
3594 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[0],
3599 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3600 h
->non_got_ref
= TRUE
;
3604 /* Indirect .sdata2 relocation. */
3605 case R_PPC_EMB_SDA2I16
:
3608 bad_shared_reloc (abfd
, r_type
);
3611 if (htab
->sdata
[1].section
== NULL
3612 && !ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3615 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[1],
3620 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3621 h
->non_got_ref
= TRUE
;
3625 case R_PPC_SDAREL16
:
3628 bad_shared_reloc (abfd
, r_type
);
3631 if (htab
->sdata
[0].sym
== NULL
3632 && !create_sdata_sym (htab
, &htab
->sdata
[0]))
3636 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3637 h
->non_got_ref
= TRUE
;
3641 case R_PPC_EMB_SDA2REL
:
3644 bad_shared_reloc (abfd
, r_type
);
3647 if (htab
->sdata
[1].sym
== NULL
3648 && !create_sdata_sym (htab
, &htab
->sdata
[1]))
3652 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3653 h
->non_got_ref
= TRUE
;
3657 case R_PPC_EMB_SDA21
:
3658 case R_PPC_EMB_RELSDA
:
3661 bad_shared_reloc (abfd
, r_type
);
3664 if (htab
->sdata
[0].sym
== NULL
3665 && !create_sdata_sym (htab
, &htab
->sdata
[0]))
3667 if (htab
->sdata
[1].sym
== NULL
3668 && !create_sdata_sym (htab
, &htab
->sdata
[1]))
3672 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3673 h
->non_got_ref
= TRUE
;
3677 case R_PPC_EMB_NADDR32
:
3678 case R_PPC_EMB_NADDR16
:
3679 case R_PPC_EMB_NADDR16_LO
:
3680 case R_PPC_EMB_NADDR16_HI
:
3681 case R_PPC_EMB_NADDR16_HA
:
3684 bad_shared_reloc (abfd
, r_type
);
3688 h
->non_got_ref
= TRUE
;
3691 case R_PPC_PLTREL24
:
3696 case R_PPC_PLTREL32
:
3697 case R_PPC_PLT16_LO
:
3698 case R_PPC_PLT16_HI
:
3699 case R_PPC_PLT16_HA
:
3701 fprintf (stderr
, "Reloc requires a PLT entry\n");
3703 /* This symbol requires a procedure linkage table entry. We
3704 actually build the entry in finish_dynamic_symbol,
3705 because this might be a case of linking PIC code without
3706 linking in any dynamic objects, in which case we don't
3707 need to generate a procedure linkage table after all. */
3711 /* It does not make sense to have a procedure linkage
3712 table entry for a local symbol. */
3713 (*_bfd_error_handler
) (_("%B(%A+0x%lx): %s reloc against "
3717 (long) rel
->r_offset
,
3718 ppc_elf_howto_table
[r_type
]->name
);
3719 bfd_set_error (bfd_error_bad_value
);
3726 if (r_type
== R_PPC_PLTREL24
)
3728 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
3729 addend
= rel
->r_addend
;
3732 if (!update_plt_info (abfd
, &h
->plt
.plist
,
3733 addend
< 32768 ? NULL
: got2
, addend
))
3738 /* The following relocations don't need to propagate the
3739 relocation if linking a shared object since they are
3740 section relative. */
3742 case R_PPC_SECTOFF_LO
:
3743 case R_PPC_SECTOFF_HI
:
3744 case R_PPC_SECTOFF_HA
:
3745 case R_PPC_DTPREL16
:
3746 case R_PPC_DTPREL16_LO
:
3747 case R_PPC_DTPREL16_HI
:
3748 case R_PPC_DTPREL16_HA
:
3753 case R_PPC_REL16_LO
:
3754 case R_PPC_REL16_HI
:
3755 case R_PPC_REL16_HA
:
3756 ppc_elf_tdata (abfd
)->has_rel16
= 1;
3759 /* These are just markers. */
3761 case R_PPC_EMB_MRKREF
:
3765 case R_PPC_RELAX32PC
:
3766 case R_PPC_RELAX32_PLT
:
3767 case R_PPC_RELAX32PC_PLT
:
3770 /* These should only appear in dynamic objects. */
3772 case R_PPC_GLOB_DAT
:
3773 case R_PPC_JMP_SLOT
:
3774 case R_PPC_RELATIVE
:
3775 case R_PPC_IRELATIVE
:
3778 /* These aren't handled yet. We'll report an error later. */
3780 case R_PPC_EMB_RELSEC16
:
3781 case R_PPC_EMB_RELST_LO
:
3782 case R_PPC_EMB_RELST_HI
:
3783 case R_PPC_EMB_RELST_HA
:
3784 case R_PPC_EMB_BIT_FLD
:
3787 /* This refers only to functions defined in the shared library. */
3788 case R_PPC_LOCAL24PC
:
3789 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
3791 htab
->plt_type
= PLT_OLD
;
3792 htab
->old_bfd
= abfd
;
3796 /* This relocation describes the C++ object vtable hierarchy.
3797 Reconstruct it for later use during GC. */
3798 case R_PPC_GNU_VTINHERIT
:
3799 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3803 /* This relocation describes which C++ vtable entries are actually
3804 used. Record for later use during GC. */
3805 case R_PPC_GNU_VTENTRY
:
3806 BFD_ASSERT (h
!= NULL
);
3808 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3812 /* We shouldn't really be seeing these. */
3815 case R_PPC_TPREL16_LO
:
3816 case R_PPC_TPREL16_HI
:
3817 case R_PPC_TPREL16_HA
:
3818 if (!info
->executable
)
3819 info
->flags
|= DF_STATIC_TLS
;
3823 case R_PPC_DTPMOD32
:
3824 case R_PPC_DTPREL32
:
3830 && (sec
->flags
& SEC_CODE
) != 0
3831 && (info
->shared
|| info
->pie
)
3832 && htab
->plt_type
== PLT_UNSET
)
3834 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3835 the start of a function, which assembles to a REL32
3836 reference to .got2. If we detect one of these, then
3837 force the old PLT layout because the linker cannot
3838 reliably deduce the GOT pointer value needed for
3841 Elf_Internal_Sym
*isym
;
3843 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3848 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3851 htab
->plt_type
= PLT_OLD
;
3852 htab
->old_bfd
= abfd
;
3855 if (h
== NULL
|| h
== htab
->elf
.hgot
)
3861 case R_PPC_ADDR16_LO
:
3862 case R_PPC_ADDR16_HI
:
3863 case R_PPC_ADDR16_HA
:
3866 if (h
!= NULL
&& !info
->shared
)
3868 /* We may need a plt entry if the symbol turns out to be
3869 a function defined in a dynamic object. */
3870 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
3873 /* We may need a copy reloc too. */
3875 h
->pointer_equality_needed
= 1;
3881 case R_PPC_REL14_BRTAKEN
:
3882 case R_PPC_REL14_BRNTAKEN
:
3885 if (h
== htab
->elf
.hgot
)
3887 if (htab
->plt_type
== PLT_UNSET
)
3889 htab
->plt_type
= PLT_OLD
;
3890 htab
->old_bfd
= abfd
;
3898 case R_PPC_ADDR14_BRTAKEN
:
3899 case R_PPC_ADDR14_BRNTAKEN
:
3900 if (h
!= NULL
&& !info
->shared
)
3902 /* We may need a plt entry if the symbol turns out to be
3903 a function defined in a dynamic object. */
3905 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
3911 /* If we are creating a shared library, and this is a reloc
3912 against a global symbol, or a non PC relative reloc
3913 against a local symbol, then we need to copy the reloc
3914 into the shared library. However, if we are linking with
3915 -Bsymbolic, we do not need to copy a reloc against a
3916 global symbol which is defined in an object we are
3917 including in the link (i.e., DEF_REGULAR is set). At
3918 this point we have not seen all the input files, so it is
3919 possible that DEF_REGULAR is not set now but will be set
3920 later (it is never cleared). In case of a weak definition,
3921 DEF_REGULAR may be cleared later by a strong definition in
3922 a shared library. We account for that possibility below by
3923 storing information in the dyn_relocs field of the hash
3924 table entry. A similar situation occurs when creating
3925 shared libraries and symbol visibility changes render the
3928 If on the other hand, we are creating an executable, we
3929 may need to keep relocations for symbols satisfied by a
3930 dynamic library if we manage to avoid copy relocs for the
3933 && (must_be_dyn_reloc (info
, r_type
)
3935 && (! info
->symbolic
3936 || h
->root
.type
== bfd_link_hash_defweak
3937 || !h
->def_regular
))))
3938 || (ELIMINATE_COPY_RELOCS
3941 && (h
->root
.type
== bfd_link_hash_defweak
3942 || !h
->def_regular
)))
3944 struct ppc_elf_dyn_relocs
*p
;
3945 struct ppc_elf_dyn_relocs
**head
;
3949 "ppc_elf_check_relocs needs to "
3950 "create relocation for %s\n",
3951 (h
&& h
->root
.root
.string
3952 ? h
->root
.root
.string
: "<unknown>"));
3956 if (htab
->elf
.dynobj
== NULL
)
3957 htab
->elf
.dynobj
= abfd
;
3959 sreloc
= _bfd_elf_make_dynamic_reloc_section
3960 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
3966 /* If this is a global symbol, we count the number of
3967 relocations we need for this symbol. */
3970 head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
3974 /* Track dynamic relocs needed for local syms too.
3975 We really need local syms available to do this
3979 Elf_Internal_Sym
*isym
;
3981 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3986 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
3990 vpp
= &elf_section_data (s
)->local_dynrel
;
3991 head
= (struct ppc_elf_dyn_relocs
**) vpp
;
3995 if (p
== NULL
|| p
->sec
!= sec
)
3997 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4008 if (!must_be_dyn_reloc (info
, r_type
))
4020 /* Merge object attributes from IBFD into OBFD. Raise an error if
4021 there are conflicting attributes. */
4023 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
4025 obj_attribute
*in_attr
, *in_attrs
;
4026 obj_attribute
*out_attr
, *out_attrs
;
4028 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
4030 /* This is the first object. Copy the attributes. */
4031 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
4033 /* Use the Tag_null value to indicate the attributes have been
4035 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
4040 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4041 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4043 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4044 non-conflicting ones. */
4045 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4046 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4047 if (in_attr
->i
!= out_attr
->i
)
4050 if (out_attr
->i
== 0)
4051 out_attr
->i
= in_attr
->i
;
4052 else if (in_attr
->i
== 0)
4054 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4056 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
4057 else if (out_attr
->i
== 1 && in_attr
->i
== 3)
4059 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4061 else if (out_attr
->i
== 3 && in_attr
->i
== 1)
4063 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4065 else if (out_attr
->i
== 3 && in_attr
->i
== 2)
4067 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4069 else if (out_attr
->i
== 2 && (in_attr
->i
== 1 || in_attr
->i
== 3))
4071 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
4072 else if (in_attr
->i
> 3)
4074 (_("Warning: %B uses unknown floating point ABI %d"), ibfd
,
4078 (_("Warning: %B uses unknown floating point ABI %d"), obfd
,
4082 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4083 merge non-conflicting ones. */
4084 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4085 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4086 if (in_attr
->i
!= out_attr
->i
)
4088 const char *in_abi
= NULL
, *out_abi
= NULL
;
4092 case 1: in_abi
= "generic"; break;
4093 case 2: in_abi
= "AltiVec"; break;
4094 case 3: in_abi
= "SPE"; break;
4097 switch (out_attr
->i
)
4099 case 1: out_abi
= "generic"; break;
4100 case 2: out_abi
= "AltiVec"; break;
4101 case 3: out_abi
= "SPE"; break;
4105 if (out_attr
->i
== 0)
4106 out_attr
->i
= in_attr
->i
;
4107 else if (in_attr
->i
== 0)
4109 /* For now, allow generic to transition to AltiVec or SPE
4110 without a warning. If GCC marked files with their stack
4111 alignment and used don't-care markings for files which are
4112 not affected by the vector ABI, we could warn about this
4114 else if (out_attr
->i
== 1)
4115 out_attr
->i
= in_attr
->i
;
4116 else if (in_attr
->i
== 1)
4118 else if (in_abi
== NULL
)
4120 (_("Warning: %B uses unknown vector ABI %d"), ibfd
,
4122 else if (out_abi
== NULL
)
4124 (_("Warning: %B uses unknown vector ABI %d"), obfd
,
4128 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4129 ibfd
, obfd
, in_abi
, out_abi
);
4132 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4133 and merge non-conflicting ones. */
4134 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4135 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4136 if (in_attr
->i
!= out_attr
->i
)
4139 if (out_attr
->i
== 0)
4140 out_attr
->i
= in_attr
->i
;
4141 else if (in_attr
->i
== 0)
4143 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4145 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd
, ibfd
);
4146 else if (out_attr
->i
== 2 && in_attr
->i
== 1)
4148 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd
, obfd
);
4149 else if (in_attr
->i
> 2)
4151 (_("Warning: %B uses unknown small structure return convention %d"), ibfd
,
4155 (_("Warning: %B uses unknown small structure return convention %d"), obfd
,
4159 /* Merge Tag_compatibility attributes and any common GNU ones. */
4160 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
4165 /* Merge backend specific data from an object file to the output
4166 object file when linking. */
4169 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4175 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4178 /* Check if we have the same endianess. */
4179 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
4182 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
4185 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4186 old_flags
= elf_elfheader (obfd
)->e_flags
;
4187 if (!elf_flags_init (obfd
))
4189 /* First call, no flags set. */
4190 elf_flags_init (obfd
) = TRUE
;
4191 elf_elfheader (obfd
)->e_flags
= new_flags
;
4194 /* Compatible flags are ok. */
4195 else if (new_flags
== old_flags
)
4198 /* Incompatible flags. */
4201 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4202 to be linked with either. */
4204 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4205 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4208 (*_bfd_error_handler
)
4209 (_("%B: compiled with -mrelocatable and linked with "
4210 "modules compiled normally"), ibfd
);
4212 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4213 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4216 (*_bfd_error_handler
)
4217 (_("%B: compiled normally and linked with "
4218 "modules compiled with -mrelocatable"), ibfd
);
4221 /* The output is -mrelocatable-lib iff both the input files are. */
4222 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4223 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4225 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4226 but each input file is either -mrelocatable or -mrelocatable-lib. */
4227 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4228 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4229 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4230 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4232 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4233 any module uses it. */
4234 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4236 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4237 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4239 /* Warn about any other mismatches. */
4240 if (new_flags
!= old_flags
)
4243 (*_bfd_error_handler
)
4244 (_("%B: uses different e_flags (0x%lx) fields "
4245 "than previous modules (0x%lx)"),
4246 ibfd
, (long) new_flags
, (long) old_flags
);
4251 bfd_set_error (bfd_error_bad_value
);
4259 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4260 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4262 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4263 struct bfd_link_info
*info
,
4264 enum ppc_elf_plt_type plt_style
,
4267 struct ppc_elf_link_hash_table
*htab
;
4270 htab
= ppc_elf_hash_table (info
);
4272 if (htab
->plt_type
== PLT_UNSET
)
4274 if (plt_style
== PLT_OLD
)
4275 htab
->plt_type
= PLT_OLD
;
4279 enum ppc_elf_plt_type plt_type
= plt_style
;
4281 /* Look through the reloc flags left by ppc_elf_check_relocs.
4282 Use the old style bss plt if a file makes plt calls
4283 without using the new relocs, and if ld isn't given
4284 --secure-plt and we never see REL16 relocs. */
4285 if (plt_type
== PLT_UNSET
)
4287 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
4288 if (is_ppc_elf (ibfd
))
4290 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4292 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
4295 htab
->old_bfd
= ibfd
;
4299 htab
->plt_type
= plt_type
;
4302 if (htab
->plt_type
== PLT_OLD
&& plt_style
== PLT_NEW
)
4303 info
->callbacks
->info (_("Using bss-plt due to %B"), htab
->old_bfd
);
4305 htab
->emit_stub_syms
= emit_stub_syms
;
4307 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
4309 if (htab
->plt_type
== PLT_NEW
)
4311 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
4312 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4314 /* The new PLT is a loaded section. */
4315 if (htab
->plt
!= NULL
4316 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
4319 /* The new GOT is not executable. */
4320 if (htab
->got
!= NULL
4321 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
4326 /* Stop an unused .glink section from affecting .text alignment. */
4327 if (htab
->glink
!= NULL
4328 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
4331 return htab
->plt_type
== PLT_NEW
;
4334 /* Return the section that should be marked against GC for a given
4338 ppc_elf_gc_mark_hook (asection
*sec
,
4339 struct bfd_link_info
*info
,
4340 Elf_Internal_Rela
*rel
,
4341 struct elf_link_hash_entry
*h
,
4342 Elf_Internal_Sym
*sym
)
4345 switch (ELF32_R_TYPE (rel
->r_info
))
4347 case R_PPC_GNU_VTINHERIT
:
4348 case R_PPC_GNU_VTENTRY
:
4352 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
4355 /* Update the got, plt and dynamic reloc reference counts for the
4356 section being removed. */
4359 ppc_elf_gc_sweep_hook (bfd
*abfd
,
4360 struct bfd_link_info
*info
,
4362 const Elf_Internal_Rela
*relocs
)
4364 struct ppc_elf_link_hash_table
*htab
;
4365 Elf_Internal_Shdr
*symtab_hdr
;
4366 struct elf_link_hash_entry
**sym_hashes
;
4367 bfd_signed_vma
*local_got_refcounts
;
4368 const Elf_Internal_Rela
*rel
, *relend
;
4371 if (info
->relocatable
)
4374 if ((sec
->flags
& SEC_ALLOC
) == 0)
4377 elf_section_data (sec
)->local_dynrel
= NULL
;
4379 htab
= ppc_elf_hash_table (info
);
4380 symtab_hdr
= &elf_symtab_hdr (abfd
);
4381 sym_hashes
= elf_sym_hashes (abfd
);
4382 local_got_refcounts
= elf_local_got_refcounts (abfd
);
4383 got2
= bfd_get_section_by_name (abfd
, ".got2");
4385 relend
= relocs
+ sec
->reloc_count
;
4386 for (rel
= relocs
; rel
< relend
; rel
++)
4388 unsigned long r_symndx
;
4389 enum elf_ppc_reloc_type r_type
;
4390 struct elf_link_hash_entry
*h
= NULL
;
4392 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4393 if (r_symndx
>= symtab_hdr
->sh_info
)
4395 struct ppc_elf_dyn_relocs
**pp
, *p
;
4396 struct ppc_elf_link_hash_entry
*eh
;
4398 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4399 while (h
->root
.type
== bfd_link_hash_indirect
4400 || h
->root
.type
== bfd_link_hash_warning
)
4401 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4402 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4404 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4407 /* Everything must go for SEC. */
4413 r_type
= ELF32_R_TYPE (rel
->r_info
);
4414 if (!htab
->is_vxworks
4416 && local_got_refcounts
!= NULL
4418 || is_branch_reloc (r_type
)))
4420 struct plt_entry
**local_plt
= (struct plt_entry
**)
4421 (local_got_refcounts
+ symtab_hdr
->sh_info
);
4422 char *local_got_tls_masks
= (char *)
4423 (local_plt
+ symtab_hdr
->sh_info
);
4424 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
4426 struct plt_entry
**ifunc
= local_plt
+ r_symndx
;
4427 bfd_vma addend
= r_type
== R_PPC_PLTREL24
? rel
->r_addend
: 0;
4428 struct plt_entry
*ent
= find_plt_ent (ifunc
, got2
, addend
);
4429 if (ent
->plt
.refcount
> 0)
4430 ent
->plt
.refcount
-= 1;
4437 case R_PPC_GOT_TLSLD16
:
4438 case R_PPC_GOT_TLSLD16_LO
:
4439 case R_PPC_GOT_TLSLD16_HI
:
4440 case R_PPC_GOT_TLSLD16_HA
:
4441 case R_PPC_GOT_TLSGD16
:
4442 case R_PPC_GOT_TLSGD16_LO
:
4443 case R_PPC_GOT_TLSGD16_HI
:
4444 case R_PPC_GOT_TLSGD16_HA
:
4445 case R_PPC_GOT_TPREL16
:
4446 case R_PPC_GOT_TPREL16_LO
:
4447 case R_PPC_GOT_TPREL16_HI
:
4448 case R_PPC_GOT_TPREL16_HA
:
4449 case R_PPC_GOT_DTPREL16
:
4450 case R_PPC_GOT_DTPREL16_LO
:
4451 case R_PPC_GOT_DTPREL16_HI
:
4452 case R_PPC_GOT_DTPREL16_HA
:
4454 case R_PPC_GOT16_LO
:
4455 case R_PPC_GOT16_HI
:
4456 case R_PPC_GOT16_HA
:
4459 if (h
->got
.refcount
> 0)
4462 else if (local_got_refcounts
!= NULL
)
4464 if (local_got_refcounts
[r_symndx
] > 0)
4465 local_got_refcounts
[r_symndx
]--;
4471 case R_PPC_REL14_BRTAKEN
:
4472 case R_PPC_REL14_BRNTAKEN
:
4474 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4481 case R_PPC_ADDR16_LO
:
4482 case R_PPC_ADDR16_HI
:
4483 case R_PPC_ADDR16_HA
:
4485 case R_PPC_ADDR14_BRTAKEN
:
4486 case R_PPC_ADDR14_BRNTAKEN
:
4493 case R_PPC_PLTREL24
:
4494 case R_PPC_PLTREL32
:
4495 case R_PPC_PLT16_LO
:
4496 case R_PPC_PLT16_HI
:
4497 case R_PPC_PLT16_HA
:
4500 bfd_vma addend
= r_type
== R_PPC_PLTREL24
? rel
->r_addend
: 0;
4501 struct plt_entry
*ent
= find_plt_ent (&h
->plt
.plist
,
4503 if (ent
->plt
.refcount
> 0)
4504 ent
->plt
.refcount
-= 1;
4515 /* Set plt output section type, htab->tls_get_addr, and call the
4516 generic ELF tls_setup function. */
4519 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
4521 struct ppc_elf_link_hash_table
*htab
;
4523 htab
= ppc_elf_hash_table (info
);
4524 if (htab
->plt_type
== PLT_NEW
4525 && htab
->plt
!= NULL
4526 && htab
->plt
->output_section
!= NULL
)
4528 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
4529 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
4532 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4533 FALSE
, FALSE
, TRUE
);
4534 return _bfd_elf_tls_setup (obfd
, info
);
4537 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4541 branch_reloc_hash_match (const bfd
*ibfd
,
4542 const Elf_Internal_Rela
*rel
,
4543 const struct elf_link_hash_entry
*hash
)
4545 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
4546 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
4547 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
4549 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
4551 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
4552 struct elf_link_hash_entry
*h
;
4554 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4555 while (h
->root
.type
== bfd_link_hash_indirect
4556 || h
->root
.type
== bfd_link_hash_warning
)
4557 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4564 /* Run through all the TLS relocs looking for optimization
4568 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
4569 struct bfd_link_info
*info
)
4573 struct ppc_elf_link_hash_table
*htab
;
4576 if (info
->relocatable
|| !info
->executable
)
4579 htab
= ppc_elf_hash_table (info
);
4580 /* Make two passes through the relocs. First time check that tls
4581 relocs involved in setting up a tls_get_addr call are indeed
4582 followed by such a call. If they are not, exclude them from
4583 the optimizations done on the second pass. */
4584 for (pass
= 0; pass
< 2; ++pass
)
4585 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4587 Elf_Internal_Sym
*locsyms
= NULL
;
4588 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
4590 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4591 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
4593 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
4595 /* Read the relocations. */
4596 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
4598 if (relstart
== NULL
)
4601 relend
= relstart
+ sec
->reloc_count
;
4602 for (rel
= relstart
; rel
< relend
; rel
++)
4604 enum elf_ppc_reloc_type r_type
;
4605 unsigned long r_symndx
;
4606 struct elf_link_hash_entry
*h
= NULL
;
4608 char tls_set
, tls_clear
;
4609 bfd_boolean is_local
;
4610 int expecting_tls_get_addr
;
4611 bfd_signed_vma
*got_count
;
4613 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4614 if (r_symndx
>= symtab_hdr
->sh_info
)
4616 struct elf_link_hash_entry
**sym_hashes
;
4618 sym_hashes
= elf_sym_hashes (ibfd
);
4619 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4620 while (h
->root
.type
== bfd_link_hash_indirect
4621 || h
->root
.type
== bfd_link_hash_warning
)
4622 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4625 expecting_tls_get_addr
= 0;
4631 r_type
= ELF32_R_TYPE (rel
->r_info
);
4634 case R_PPC_GOT_TLSLD16
:
4635 case R_PPC_GOT_TLSLD16_LO
:
4636 expecting_tls_get_addr
= 1;
4639 case R_PPC_GOT_TLSLD16_HI
:
4640 case R_PPC_GOT_TLSLD16_HA
:
4641 /* These relocs should never be against a symbol
4642 defined in a shared lib. Leave them alone if
4643 that turns out to be the case. */
4652 case R_PPC_GOT_TLSGD16
:
4653 case R_PPC_GOT_TLSGD16_LO
:
4654 expecting_tls_get_addr
= 1;
4657 case R_PPC_GOT_TLSGD16_HI
:
4658 case R_PPC_GOT_TLSGD16_HA
:
4664 tls_set
= TLS_TLS
| TLS_TPRELGD
;
4668 case R_PPC_GOT_TPREL16
:
4669 case R_PPC_GOT_TPREL16_LO
:
4670 case R_PPC_GOT_TPREL16_HI
:
4671 case R_PPC_GOT_TPREL16_HA
:
4676 tls_clear
= TLS_TPREL
;
4688 if (!expecting_tls_get_addr
4689 || !sec
->has_tls_get_addr_call
)
4692 if (rel
+ 1 < relend
4693 && branch_reloc_hash_match (ibfd
, rel
+ 1,
4694 htab
->tls_get_addr
))
4697 /* Uh oh, we didn't find the expected call. We
4698 could just mark this symbol to exclude it
4699 from tls optimization but it's safer to skip
4700 the entire section. */
4701 sec
->has_tls_reloc
= 0;
4707 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
4708 got_count
= &h
->got
.refcount
;
4712 Elf_Internal_Sym
*sym
;
4713 bfd_signed_vma
*lgot_refs
;
4714 struct plt_entry
**local_plt
;
4717 if (locsyms
== NULL
)
4719 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4720 if (locsyms
== NULL
)
4721 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
4722 symtab_hdr
->sh_info
,
4723 0, NULL
, NULL
, NULL
);
4724 if (locsyms
== NULL
)
4726 if (elf_section_data (sec
)->relocs
!= relstart
)
4731 sym
= locsyms
+ r_symndx
;
4732 lgot_refs
= elf_local_got_refcounts (ibfd
);
4733 if (lgot_refs
== NULL
)
4735 local_plt
= (struct plt_entry
**)
4736 (lgot_refs
+ symtab_hdr
->sh_info
);
4737 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
4738 tls_mask
= &lgot_masks
[r_symndx
];
4739 got_count
= &lgot_refs
[r_symndx
];
4744 /* We managed to get rid of a got entry. */
4749 if (expecting_tls_get_addr
)
4751 struct plt_entry
*ent
;
4753 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
4755 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
4756 ent
->plt
.refcount
-= 1;
4759 *tls_mask
|= tls_set
;
4760 *tls_mask
&= ~tls_clear
;
4763 if (elf_section_data (sec
)->relocs
!= relstart
)
4768 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
4770 if (!info
->keep_memory
)
4773 symtab_hdr
->contents
= (unsigned char *) locsyms
;
4779 /* Return true if we have dynamic relocs that apply to read-only sections. */
4782 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
4784 struct ppc_elf_dyn_relocs
*p
;
4786 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4788 asection
*s
= p
->sec
->output_section
;
4791 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
4792 == (SEC_READONLY
| SEC_ALLOC
)))
4798 /* Adjust a symbol defined by a dynamic object and referenced by a
4799 regular object. The current definition is in some section of the
4800 dynamic object, but we're not including those sections. We have to
4801 change the definition to something the rest of the link can
4805 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4806 struct elf_link_hash_entry
*h
)
4808 struct ppc_elf_link_hash_table
*htab
;
4812 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4813 h
->root
.root
.string
);
4816 /* Make sure we know what is going on here. */
4817 htab
= ppc_elf_hash_table (info
);
4818 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
4820 || h
->u
.weakdef
!= NULL
4823 && !h
->def_regular
)));
4825 /* Deal with function syms. */
4826 if (h
->type
== STT_FUNC
4827 || h
->type
== STT_GNU_IFUNC
4830 /* Clear procedure linkage table information for any symbol that
4831 won't need a .plt entry. */
4832 struct plt_entry
*ent
;
4833 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4834 if (ent
->plt
.refcount
> 0)
4837 || (h
->type
!= STT_GNU_IFUNC
4838 && (SYMBOL_CALLS_LOCAL (info
, h
)
4839 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4840 && h
->root
.type
== bfd_link_hash_undefweak
))))
4842 /* A PLT entry is not required/allowed when:
4844 1. We are not using ld.so; because then the PLT entry
4845 can't be set up, so we can't use one. In this case,
4846 ppc_elf_adjust_dynamic_symbol won't even be called.
4848 2. GC has rendered the entry unused.
4850 3. We know for certain that a call to this symbol
4851 will go to this object, or will remain undefined. */
4852 h
->plt
.plist
= NULL
;
4857 /* After adjust_dynamic_symbol, non_got_ref set in the
4858 non-shared case means that we have allocated space in
4859 .dynbss for the symbol and thus dyn_relocs for this
4860 symbol should be discarded.
4861 If we get here we know we are making a PLT entry for this
4862 symbol, and in an executable we'd normally resolve
4863 relocations against this symbol to the PLT entry. Allow
4864 dynamic relocs if the reference is weak, and the dynamic
4865 relocs will not cause text relocation. */
4866 if (!h
->ref_regular_nonweak
4868 && h
->type
!= STT_GNU_IFUNC
4869 && !htab
->is_vxworks
4870 && !ppc_elf_hash_entry (h
)->has_sda_refs
4871 && !readonly_dynrelocs (h
))
4877 h
->plt
.plist
= NULL
;
4879 /* If this is a weak symbol, and there is a real definition, the
4880 processor independent code will have arranged for us to see the
4881 real definition first, and we can just use the same value. */
4882 if (h
->u
.weakdef
!= NULL
)
4884 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4885 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4886 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4887 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4888 if (ELIMINATE_COPY_RELOCS
)
4889 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
4893 /* This is a reference to a symbol defined by a dynamic object which
4894 is not a function. */
4896 /* If we are creating a shared library, we must presume that the
4897 only references to the symbol are via the global offset table.
4898 For such cases we need not do anything here; the relocations will
4899 be handled correctly by relocate_section. */
4903 /* If there are no references to this symbol that do not use the
4904 GOT, we don't need to generate a copy reloc. */
4905 if (!h
->non_got_ref
)
4908 /* If we didn't find any dynamic relocs in read-only sections, then
4909 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4910 We can't do this if there are any small data relocations. This
4911 doesn't work on VxWorks, where we can not have dynamic
4912 relocations (other than copy and jump slot relocations) in an
4914 if (ELIMINATE_COPY_RELOCS
4915 && !ppc_elf_hash_entry (h
)->has_sda_refs
4916 && !htab
->is_vxworks
4918 && !readonly_dynrelocs (h
))
4926 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
4927 h
->root
.root
.string
);
4931 /* We must allocate the symbol in our .dynbss section, which will
4932 become part of the .bss section of the executable. There will be
4933 an entry for this symbol in the .dynsym section. The dynamic
4934 object will contain position independent code, so all references
4935 from the dynamic object to this symbol will go through the global
4936 offset table. The dynamic linker will use the .dynsym entry to
4937 determine the address it must put in the global offset table, so
4938 both the dynamic object and the regular object will refer to the
4939 same memory location for the variable.
4941 Of course, if the symbol is referenced using SDAREL relocs, we
4942 must instead allocate it in .sbss. */
4944 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4948 BFD_ASSERT (s
!= NULL
);
4950 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4951 copy the initial value out of the dynamic object and into the
4952 runtime process image. We need to remember the offset into the
4953 .rela.bss section we are going to use. */
4954 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4958 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4959 srel
= htab
->relsbss
;
4961 srel
= htab
->relbss
;
4962 BFD_ASSERT (srel
!= NULL
);
4963 srel
->size
+= sizeof (Elf32_External_Rela
);
4967 return _bfd_elf_adjust_dynamic_copy (h
, s
);
4970 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4971 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4972 specifying the addend on the plt relocation. For -fpic code, the sym
4973 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4974 xxxxxxxx.got2.plt_pic32.<callee>. */
4977 add_stub_sym (struct plt_entry
*ent
,
4978 struct elf_link_hash_entry
*h
,
4979 struct bfd_link_info
*info
)
4981 struct elf_link_hash_entry
*sh
;
4982 size_t len1
, len2
, len3
;
4985 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
4987 if (info
->shared
|| info
->pie
)
4988 stub
= ".plt_pic32.";
4990 stub
= ".plt_call32.";
4992 len1
= strlen (h
->root
.root
.string
);
4993 len2
= strlen (stub
);
4996 len3
= strlen (ent
->sec
->name
);
4997 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5000 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5002 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5003 memcpy (name
+ 8 + len3
, stub
, len2
);
5004 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5005 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5008 if (sh
->root
.type
== bfd_link_hash_new
)
5010 sh
->root
.type
= bfd_link_hash_defined
;
5011 sh
->root
.u
.def
.section
= htab
->glink
;
5012 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5013 sh
->ref_regular
= 1;
5014 sh
->def_regular
= 1;
5015 sh
->ref_regular_nonweak
= 1;
5016 sh
->forced_local
= 1;
5022 /* Allocate NEED contiguous space in .got, and return the offset.
5023 Handles allocation of the got header when crossing 32k. */
5026 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5029 unsigned int max_before_header
;
5031 if (htab
->plt_type
== PLT_VXWORKS
)
5033 where
= htab
->got
->size
;
5034 htab
->got
->size
+= need
;
5038 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5039 if (need
<= htab
->got_gap
)
5041 where
= max_before_header
- htab
->got_gap
;
5042 htab
->got_gap
-= need
;
5046 if (htab
->got
->size
+ need
> max_before_header
5047 && htab
->got
->size
<= max_before_header
)
5049 htab
->got_gap
= max_before_header
- htab
->got
->size
;
5050 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
5052 where
= htab
->got
->size
;
5053 htab
->got
->size
+= need
;
5059 /* Allocate space in associated reloc sections for dynamic relocs. */
5062 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5064 struct bfd_link_info
*info
= inf
;
5065 struct ppc_elf_link_hash_entry
*eh
;
5066 struct ppc_elf_link_hash_table
*htab
;
5067 struct ppc_elf_dyn_relocs
*p
;
5069 if (h
->root
.type
== bfd_link_hash_indirect
)
5072 if (h
->root
.type
== bfd_link_hash_warning
)
5073 /* When warning symbols are created, they **replace** the "real"
5074 entry in the hash table, thus we never get to see the real
5075 symbol in a hash traversal. So look at it now. */
5076 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5078 htab
= ppc_elf_hash_table (info
);
5079 if (htab
->elf
.dynamic_sections_created
5080 || h
->type
== STT_GNU_IFUNC
)
5082 struct plt_entry
*ent
;
5083 bfd_boolean doneone
= FALSE
;
5084 bfd_vma plt_offset
= 0, glink_offset
= 0;
5087 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5088 if (ent
->plt
.refcount
> 0)
5090 /* Make sure this symbol is output as a dynamic symbol. */
5091 if (h
->dynindx
== -1
5094 && htab
->elf
.dynamic_sections_created
)
5096 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5100 dyn
= htab
->elf
.dynamic_sections_created
;
5102 || h
->type
== STT_GNU_IFUNC
5103 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
5105 asection
*s
= htab
->plt
;
5106 if (!dyn
|| h
->dynindx
== -1)
5109 if (htab
->plt_type
== PLT_NEW
|| !dyn
|| h
->dynindx
== -1)
5113 plt_offset
= s
->size
;
5116 ent
->plt
.offset
= plt_offset
;
5119 if (!doneone
|| info
->shared
|| info
->pie
)
5121 glink_offset
= s
->size
;
5122 s
->size
+= GLINK_ENTRY_SIZE
;
5129 h
->root
.u
.def
.section
= s
;
5130 h
->root
.u
.def
.value
= glink_offset
;
5132 ent
->glink_offset
= glink_offset
;
5134 if (htab
->emit_stub_syms
5135 && !add_stub_sym (ent
, h
, info
))
5142 /* If this is the first .plt entry, make room
5143 for the special first entry. */
5145 s
->size
+= htab
->plt_initial_entry_size
;
5147 /* The PowerPC PLT is actually composed of two
5148 parts, the first part is 2 words (for a load
5149 and a jump), and then there is a remaining
5150 word available at the end. */
5151 plt_offset
= (htab
->plt_initial_entry_size
5152 + (htab
->plt_slot_size
5154 - htab
->plt_initial_entry_size
)
5155 / htab
->plt_entry_size
)));
5157 /* If this symbol is not defined in a regular
5158 file, and we are not generating a shared
5159 library, then set the symbol to this location
5160 in the .plt. This is to avoid text
5161 relocations, and is required to make
5162 function pointers compare as equal between
5163 the normal executable and the shared library. */
5168 h
->root
.u
.def
.section
= s
;
5169 h
->root
.u
.def
.value
= plt_offset
;
5172 /* Make room for this entry. */
5173 s
->size
+= htab
->plt_entry_size
;
5174 /* After the 8192nd entry, room for two entries
5176 if (htab
->plt_type
== PLT_OLD
5177 && (s
->size
- htab
->plt_initial_entry_size
)
5178 / htab
->plt_entry_size
5179 > PLT_NUM_SINGLE_ENTRIES
)
5180 s
->size
+= htab
->plt_entry_size
;
5182 ent
->plt
.offset
= plt_offset
;
5185 /* We also need to make an entry in the .rela.plt section. */
5188 if (!htab
->elf
.dynamic_sections_created
5189 || h
->dynindx
== -1)
5190 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
5193 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
5195 if (htab
->plt_type
== PLT_VXWORKS
)
5197 /* Allocate space for the unloaded relocations. */
5199 && htab
->elf
.dynamic_sections_created
)
5202 == (bfd_vma
) htab
->plt_initial_entry_size
)
5204 htab
->srelplt2
->size
5205 += (sizeof (Elf32_External_Rela
)
5206 * VXWORKS_PLTRESOLVE_RELOCS
);
5209 htab
->srelplt2
->size
5210 += (sizeof (Elf32_External_Rela
)
5211 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
5214 /* Every PLT entry has an associated GOT entry in
5216 htab
->sgotplt
->size
+= 4;
5223 ent
->plt
.offset
= (bfd_vma
) -1;
5226 ent
->plt
.offset
= (bfd_vma
) -1;
5230 h
->plt
.plist
= NULL
;
5236 h
->plt
.plist
= NULL
;
5240 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5241 if (eh
->elf
.got
.refcount
> 0)
5246 /* Make sure this symbol is output as a dynamic symbol. */
5247 if (eh
->elf
.dynindx
== -1
5248 && !eh
->elf
.forced_local
5249 && eh
->elf
.type
!= STT_GNU_IFUNC
5250 && htab
->elf
.dynamic_sections_created
)
5252 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
5257 if ((eh
->tls_mask
& TLS_TLS
) != 0)
5259 if ((eh
->tls_mask
& TLS_LD
) != 0)
5261 if (!eh
->elf
.def_dynamic
)
5262 /* We'll just use htab->tlsld_got.offset. This should
5263 always be the case. It's a little odd if we have
5264 a local dynamic reloc against a non-local symbol. */
5265 htab
->tlsld_got
.refcount
+= 1;
5269 if ((eh
->tls_mask
& TLS_GD
) != 0)
5271 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5273 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
5279 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5282 asection
*rsec
= NULL
;
5283 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5284 dyn
= htab
->elf
.dynamic_sections_created
;
5286 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
5287 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
5288 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
5289 rsec
= htab
->relgot
;
5290 else if (h
->type
== STT_GNU_IFUNC
)
5291 rsec
= htab
->reliplt
;
5294 /* All the entries we allocated need relocs.
5295 Except LD only needs one. */
5296 if ((eh
->tls_mask
& TLS_LD
) != 0
5297 && eh
->elf
.def_dynamic
)
5299 rsec
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
5304 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5306 if (eh
->dyn_relocs
== NULL
5307 || !htab
->elf
.dynamic_sections_created
)
5310 /* In the shared -Bsymbolic case, discard space allocated for
5311 dynamic pc-relative relocs against symbols which turn out to be
5312 defined in regular objects. For the normal shared case, discard
5313 space for relocs that have become local due to symbol visibility
5318 /* Relocs that use pc_count are those that appear on a call insn,
5319 or certain REL relocs (see must_be_dyn_reloc) that can be
5320 generated via assembly. We want calls to protected symbols to
5321 resolve directly to the function rather than going via the plt.
5322 If people want function pointer comparisons to work as expected
5323 then they should avoid writing weird assembly. */
5324 if (SYMBOL_CALLS_LOCAL (info
, h
))
5326 struct ppc_elf_dyn_relocs
**pp
;
5328 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5330 p
->count
-= p
->pc_count
;
5339 if (htab
->is_vxworks
)
5341 struct ppc_elf_dyn_relocs
**pp
;
5343 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5345 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
5352 /* Discard relocs on undefined symbols that must be local. */
5353 if (eh
->dyn_relocs
!= NULL
5354 && h
->root
.type
== bfd_link_hash_undefined
5355 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
5356 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
5357 eh
->dyn_relocs
= NULL
;
5359 /* Also discard relocs on undefined weak syms with non-default
5361 if (eh
->dyn_relocs
!= NULL
5362 && h
->root
.type
== bfd_link_hash_undefweak
)
5364 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
5365 eh
->dyn_relocs
= NULL
;
5367 /* Make sure undefined weak symbols are output as a dynamic
5369 else if (h
->dynindx
== -1
5373 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5378 else if (ELIMINATE_COPY_RELOCS
)
5380 /* For the non-shared case, discard space for relocs against
5381 symbols which turn out to need copy relocs or are not
5387 /* Make sure this symbol is output as a dynamic symbol.
5388 Undefined weak syms won't yet be marked as dynamic. */
5389 if (h
->dynindx
== -1
5390 && !h
->forced_local
)
5392 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5396 /* If that succeeded, we know we'll be keeping all the
5398 if (h
->dynindx
!= -1)
5402 eh
->dyn_relocs
= NULL
;
5407 /* Finally, allocate space. */
5408 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5410 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5411 if (!htab
->elf
.dynamic_sections_created
)
5412 sreloc
= htab
->reliplt
;
5413 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
5419 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5420 read-only sections. */
5423 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
5425 if (h
->root
.type
== bfd_link_hash_indirect
)
5428 if (h
->root
.type
== bfd_link_hash_warning
)
5429 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5431 if (readonly_dynrelocs (h
))
5433 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
5435 /* Not an error, just cut short the traversal. */
5441 /* Set the sizes of the dynamic sections. */
5444 ppc_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
5445 struct bfd_link_info
*info
)
5447 struct ppc_elf_link_hash_table
*htab
;
5453 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
5456 htab
= ppc_elf_hash_table (info
);
5457 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
5459 if (elf_hash_table (info
)->dynamic_sections_created
)
5461 /* Set the contents of the .interp section to the interpreter. */
5462 if (info
->executable
)
5464 s
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".interp");
5465 BFD_ASSERT (s
!= NULL
);
5466 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
5467 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
5471 if (htab
->plt_type
== PLT_OLD
)
5472 htab
->got_header_size
= 16;
5473 else if (htab
->plt_type
== PLT_NEW
)
5474 htab
->got_header_size
= 12;
5476 /* Set up .got offsets for local syms, and space for local dynamic
5478 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5480 bfd_signed_vma
*local_got
;
5481 bfd_signed_vma
*end_local_got
;
5482 struct plt_entry
**local_plt
;
5483 struct plt_entry
**end_local_plt
;
5485 bfd_size_type locsymcount
;
5486 Elf_Internal_Shdr
*symtab_hdr
;
5488 if (!is_ppc_elf (ibfd
))
5491 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
5493 struct ppc_elf_dyn_relocs
*p
;
5495 for (p
= ((struct ppc_elf_dyn_relocs
*)
5496 elf_section_data (s
)->local_dynrel
);
5500 if (!bfd_is_abs_section (p
->sec
)
5501 && bfd_is_abs_section (p
->sec
->output_section
))
5503 /* Input section has been discarded, either because
5504 it is a copy of a linkonce section or due to
5505 linker script /DISCARD/, so we'll be discarding
5508 else if (htab
->is_vxworks
5509 && strcmp (p
->sec
->output_section
->name
,
5512 /* Relocations in vxworks .tls_vars sections are
5513 handled specially by the loader. */
5515 else if (p
->count
!= 0)
5517 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5518 if (!htab
->elf
.dynamic_sections_created
)
5519 sreloc
= htab
->reliplt
;
5520 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
5521 if ((p
->sec
->output_section
->flags
5522 & (SEC_READONLY
| SEC_ALLOC
))
5523 == (SEC_READONLY
| SEC_ALLOC
))
5524 info
->flags
|= DF_TEXTREL
;
5529 local_got
= elf_local_got_refcounts (ibfd
);
5533 symtab_hdr
= &elf_symtab_hdr (ibfd
);
5534 locsymcount
= symtab_hdr
->sh_info
;
5535 end_local_got
= local_got
+ locsymcount
;
5536 local_plt
= (struct plt_entry
**) end_local_got
;
5537 end_local_plt
= local_plt
+ locsymcount
;
5538 lgot_masks
= (char *) end_local_plt
;
5539 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
5542 unsigned int need
= 0;
5543 if ((*lgot_masks
& TLS_TLS
) != 0)
5545 if ((*lgot_masks
& TLS_GD
) != 0)
5547 if ((*lgot_masks
& TLS_LD
) != 0)
5548 htab
->tlsld_got
.refcount
+= 1;
5549 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5551 if ((*lgot_masks
& TLS_DTPREL
) != 0)
5557 *local_got
= (bfd_vma
) -1;
5560 *local_got
= allocate_got (htab
, need
);
5562 htab
->relgot
->size
+= (need
5563 * (sizeof (Elf32_External_Rela
) / 4));
5564 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
5565 htab
->reliplt
->size
+= (need
5566 * (sizeof (Elf32_External_Rela
) / 4));
5570 *local_got
= (bfd_vma
) -1;
5572 if (htab
->is_vxworks
)
5575 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5576 for (; local_plt
< end_local_plt
; ++local_plt
)
5578 struct plt_entry
*ent
;
5579 bfd_boolean doneone
= FALSE
;
5580 bfd_vma plt_offset
= 0, glink_offset
= 0;
5582 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
5583 if (ent
->plt
.refcount
> 0)
5585 asection
*s
= htab
->iplt
;
5589 plt_offset
= s
->size
;
5592 ent
->plt
.offset
= plt_offset
;
5595 if (!doneone
|| info
->shared
|| info
->pie
)
5597 glink_offset
= s
->size
;
5598 s
->size
+= GLINK_ENTRY_SIZE
;
5600 ent
->glink_offset
= glink_offset
;
5604 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
5609 ent
->plt
.offset
= (bfd_vma
) -1;
5613 /* Allocate space for global sym dynamic relocs. */
5614 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
5616 if (htab
->tlsld_got
.refcount
> 0)
5618 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
5620 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
5623 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
5625 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
5627 unsigned int g_o_t
= 32768;
5629 /* If we haven't allocated the header, do so now. When we get here,
5630 for old plt/got the got size will be 0 to 32764 (not allocated),
5631 or 32780 to 65536 (header allocated). For new plt/got, the
5632 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5633 if (htab
->got
->size
<= 32768)
5635 g_o_t
= htab
->got
->size
;
5636 if (htab
->plt_type
== PLT_OLD
)
5638 htab
->got
->size
+= htab
->got_header_size
;
5641 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
5644 if (htab
->glink
!= NULL
5645 && htab
->glink
->size
!= 0
5646 && htab
->elf
.dynamic_sections_created
)
5648 htab
->glink_pltresolve
= htab
->glink
->size
;
5649 /* Space for the branch table. */
5650 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
5651 /* Pad out to align the start of PLTresolve. */
5652 htab
->glink
->size
+= -htab
->glink
->size
& 15;
5653 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
5655 if (htab
->emit_stub_syms
)
5657 struct elf_link_hash_entry
*sh
;
5658 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
5659 TRUE
, FALSE
, FALSE
);
5662 if (sh
->root
.type
== bfd_link_hash_new
)
5664 sh
->root
.type
= bfd_link_hash_defined
;
5665 sh
->root
.u
.def
.section
= htab
->glink
;
5666 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
5667 sh
->ref_regular
= 1;
5668 sh
->def_regular
= 1;
5669 sh
->ref_regular_nonweak
= 1;
5670 sh
->forced_local
= 1;
5673 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
5674 TRUE
, FALSE
, FALSE
);
5677 if (sh
->root
.type
== bfd_link_hash_new
)
5679 sh
->root
.type
= bfd_link_hash_defined
;
5680 sh
->root
.u
.def
.section
= htab
->glink
;
5681 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
5682 sh
->ref_regular
= 1;
5683 sh
->def_regular
= 1;
5684 sh
->ref_regular_nonweak
= 1;
5685 sh
->forced_local
= 1;
5691 /* We've now determined the sizes of the various dynamic sections.
5692 Allocate memory for them. */
5694 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5696 bfd_boolean strip_section
= TRUE
;
5698 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5704 /* We'd like to strip these sections if they aren't needed, but if
5705 we've exported dynamic symbols from them we must leave them.
5706 It's too late to tell BFD to get rid of the symbols. */
5707 if (htab
->elf
.hplt
!= NULL
)
5708 strip_section
= FALSE
;
5709 /* Strip this section if we don't need it; see the
5712 else if (s
== htab
->iplt
5714 || s
== htab
->sgotplt
5716 || s
== htab
->dynbss
5717 || s
== htab
->dynsbss
5718 || s
== htab
->sdata
[0].section
5719 || s
== htab
->sdata
[1].section
)
5721 /* Strip these too. */
5723 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
5727 /* Remember whether there are any relocation sections. */
5730 /* We use the reloc_count field as a counter if we need
5731 to copy relocs into the output file. */
5737 /* It's not one of our sections, so don't allocate space. */
5741 if (s
->size
== 0 && strip_section
)
5743 /* If we don't need this section, strip it from the
5744 output file. This is mostly to handle .rela.bss and
5745 .rela.plt. We must create both sections in
5746 create_dynamic_sections, because they must be created
5747 before the linker maps input sections to output
5748 sections. The linker does that before
5749 adjust_dynamic_symbol is called, and it is that
5750 function which decides whether anything needs to go
5751 into these sections. */
5752 s
->flags
|= SEC_EXCLUDE
;
5756 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
5759 /* Allocate memory for the section contents. */
5760 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
5761 if (s
->contents
== NULL
)
5765 if (htab
->elf
.dynamic_sections_created
)
5767 /* Add some entries to the .dynamic section. We fill in the
5768 values later, in ppc_elf_finish_dynamic_sections, but we
5769 must add the entries now so that we get the correct size for
5770 the .dynamic section. The DT_DEBUG entry is filled in by the
5771 dynamic linker and used by the debugger. */
5772 #define add_dynamic_entry(TAG, VAL) \
5773 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5775 if (info
->executable
)
5777 if (!add_dynamic_entry (DT_DEBUG
, 0))
5781 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
5783 if (!add_dynamic_entry (DT_PLTGOT
, 0)
5784 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
5785 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
5786 || !add_dynamic_entry (DT_JMPREL
, 0))
5790 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
5792 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
5798 if (!add_dynamic_entry (DT_RELA
, 0)
5799 || !add_dynamic_entry (DT_RELASZ
, 0)
5800 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
5804 /* If any dynamic relocs apply to a read-only section, then we
5805 need a DT_TEXTREL entry. */
5806 if ((info
->flags
& DF_TEXTREL
) == 0)
5807 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
5810 if ((info
->flags
& DF_TEXTREL
) != 0)
5812 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5815 if (htab
->is_vxworks
5816 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
5819 #undef add_dynamic_entry
5824 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5827 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
5829 if (h
->plt
.plist
!= NULL
5831 && (!h
->pointer_equality_needed
5832 || !h
->ref_regular_nonweak
))
5835 return _bfd_elf_hash_symbol (h
);
5838 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5840 static const int shared_stub_entry
[] =
5842 0x7c0802a6, /* mflr 0 */
5843 0x429f0005, /* bcl 20, 31, .Lxxx */
5844 0x7d6802a6, /* mflr 11 */
5845 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5846 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5847 0x7c0803a6, /* mtlr 0 */
5848 0x7d6903a6, /* mtctr 11 */
5849 0x4e800420, /* bctr */
5852 static const int stub_entry
[] =
5854 0x3d600000, /* lis 11,xxx@ha */
5855 0x396b0000, /* addi 11,11,xxx@l */
5856 0x7d6903a6, /* mtctr 11 */
5857 0x4e800420, /* bctr */
5861 ppc_elf_relax_section (bfd
*abfd
,
5863 struct bfd_link_info
*link_info
,
5868 struct one_fixup
*next
;
5874 Elf_Internal_Shdr
*symtab_hdr
;
5875 bfd_byte
*contents
= NULL
;
5876 Elf_Internal_Sym
*isymbuf
= NULL
;
5877 Elf_Internal_Rela
*internal_relocs
= NULL
;
5878 Elf_Internal_Rela
*irel
, *irelend
;
5879 struct one_fixup
*fixups
= NULL
;
5880 unsigned changes
= 0;
5881 struct ppc_elf_link_hash_table
*htab
;
5882 bfd_size_type trampoff
;
5887 /* Nothing to do if there are no relocations, and no need to do
5888 anything with non-alloc sections. */
5889 if ((isec
->flags
& SEC_ALLOC
) == 0
5890 || (isec
->flags
& SEC_RELOC
) == 0
5891 || isec
->reloc_count
== 0)
5894 /* We cannot represent the required PIC relocs in the output, so don't
5895 do anything. The linker doesn't support mixing -shared and -r
5897 if (link_info
->relocatable
&& link_info
->shared
)
5900 trampoff
= (isec
->size
+ 3) & (bfd_vma
) -4;
5901 /* Space for a branch around any trampolines. */
5904 symtab_hdr
= &elf_symtab_hdr (abfd
);
5906 /* Get a copy of the native relocations. */
5907 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
5908 link_info
->keep_memory
);
5909 if (internal_relocs
== NULL
)
5912 htab
= ppc_elf_hash_table (link_info
);
5913 got2
= bfd_get_section_by_name (abfd
, ".got2");
5915 irelend
= internal_relocs
+ isec
->reloc_count
;
5916 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
5918 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
5919 bfd_vma symaddr
, reladdr
, toff
, roff
;
5921 struct one_fixup
*f
;
5922 size_t insn_offset
= 0;
5923 bfd_vma max_branch_offset
, val
;
5926 struct elf_link_hash_entry
*h
;
5927 unsigned char sym_type
;
5932 case R_PPC_LOCAL24PC
:
5933 case R_PPC_PLTREL24
:
5934 max_branch_offset
= 1 << 25;
5938 case R_PPC_REL14_BRTAKEN
:
5939 case R_PPC_REL14_BRNTAKEN
:
5940 max_branch_offset
= 1 << 15;
5947 /* Get the value of the symbol referred to by the reloc. */
5949 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
5951 /* A local symbol. */
5952 Elf_Internal_Sym
*isym
;
5954 /* Read this BFD's local symbols. */
5955 if (isymbuf
== NULL
)
5957 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5958 if (isymbuf
== NULL
)
5959 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
5960 symtab_hdr
->sh_info
, 0,
5965 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
5966 if (isym
->st_shndx
== SHN_UNDEF
)
5967 tsec
= bfd_und_section_ptr
;
5968 else if (isym
->st_shndx
== SHN_ABS
)
5969 tsec
= bfd_abs_section_ptr
;
5970 else if (isym
->st_shndx
== SHN_COMMON
)
5971 tsec
= bfd_com_section_ptr
;
5973 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5975 toff
= isym
->st_value
;
5976 sym_type
= ELF_ST_TYPE (isym
->st_info
);
5980 /* Global symbol handling. */
5983 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
5984 h
= elf_sym_hashes (abfd
)[indx
];
5986 while (h
->root
.type
== bfd_link_hash_indirect
5987 || h
->root
.type
== bfd_link_hash_warning
)
5988 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5994 else if (h
->root
.type
== bfd_link_hash_defined
5995 || h
->root
.type
== bfd_link_hash_defweak
)
5997 tsec
= h
->root
.u
.def
.section
;
5998 toff
= h
->root
.u
.def
.value
;
6000 else if (h
->root
.type
== bfd_link_hash_undefined
6001 || h
->root
.type
== bfd_link_hash_undefweak
)
6003 tsec
= bfd_und_section_ptr
;
6012 if (is_branch_reloc (r_type
))
6014 struct plt_entry
**plist
= NULL
;
6017 plist
= &h
->plt
.plist
;
6018 else if (sym_type
== STT_GNU_IFUNC
)
6020 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6021 struct plt_entry
**local_plt
= (struct plt_entry
**)
6022 (local_got_offsets
+ symtab_hdr
->sh_info
);
6023 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
6028 struct plt_entry
*ent
;
6030 if (r_type
== R_PPC_PLTREL24
)
6031 addend
= irel
->r_addend
;
6032 ent
= find_plt_ent (plist
, got2
, addend
);
6035 if (htab
->plt_type
== PLT_NEW
6037 || !htab
->elf
.dynamic_sections_created
6038 || h
->dynindx
== -1)
6041 toff
= ent
->glink_offset
;
6046 toff
= ent
->plt
.offset
;
6052 /* If the branch and target are in the same section, you have
6053 no hope of adding stubs. We'll error out later should the
6058 /* There probably isn't any reason to handle symbols in
6059 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6060 attribute for a code section, and we are only looking at
6061 branches. However, implement it correctly here as a
6062 reference for other target relax_section functions. */
6063 if (0 && tsec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
6065 /* At this stage in linking, no SEC_MERGE symbol has been
6066 adjusted, so all references to such symbols need to be
6067 passed through _bfd_merged_section_offset. (Later, in
6068 relocate_section, all SEC_MERGE symbols *except* for
6069 section symbols have been adjusted.)
6071 gas may reduce relocations against symbols in SEC_MERGE
6072 sections to a relocation against the section symbol when
6073 the original addend was zero. When the reloc is against
6074 a section symbol we should include the addend in the
6075 offset passed to _bfd_merged_section_offset, since the
6076 location of interest is the original symbol. On the
6077 other hand, an access to "sym+addend" where "sym" is not
6078 a section symbol should not include the addend; Such an
6079 access is presumed to be an offset from "sym"; The
6080 location of interest is just "sym". */
6081 if (sym_type
== STT_SECTION
)
6082 toff
+= irel
->r_addend
;
6084 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
6085 elf_section_data (tsec
)->sec_info
,
6088 if (sym_type
!= STT_SECTION
)
6089 toff
+= irel
->r_addend
;
6091 /* PLTREL24 addends are special. */
6092 else if (r_type
!= R_PPC_PLTREL24
)
6093 toff
+= irel
->r_addend
;
6095 /* Attempted -shared link of non-pic code loses. */
6096 if (tsec
->output_section
== NULL
)
6099 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
6101 roff
= irel
->r_offset
;
6102 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
6104 /* If the branch is in range, no need to do anything. */
6105 if (tsec
!= bfd_und_section_ptr
6106 && (!link_info
->relocatable
6107 /* A relocatable link may have sections moved during
6108 final link, so do not presume they remain in range. */
6109 || tsec
->output_section
== isec
->output_section
)
6110 && symaddr
- reladdr
+ max_branch_offset
< 2 * max_branch_offset
)
6113 /* Look for an existing fixup to this address. */
6114 for (f
= fixups
; f
; f
= f
->next
)
6115 if (f
->tsec
== tsec
&& f
->toff
== toff
)
6121 unsigned long stub_rtype
;
6123 val
= trampoff
- roff
;
6124 if (val
>= max_branch_offset
)
6125 /* Oh dear, we can't reach a trampoline. Don't try to add
6126 one. We'll report an error later. */
6129 if (link_info
->shared
)
6131 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
6133 stub_rtype
= R_PPC_RELAX32PC
;
6137 size
= 4 * ARRAY_SIZE (stub_entry
);
6139 stub_rtype
= R_PPC_RELAX32
;
6142 if (R_PPC_RELAX32_PLT
- R_PPC_RELAX32
6143 != R_PPC_RELAX32PC_PLT
- R_PPC_RELAX32PC
)
6145 if (tsec
== htab
->plt
6146 || tsec
== htab
->glink
)
6147 stub_rtype
+= R_PPC_RELAX32_PLT
- R_PPC_RELAX32
;
6149 /* Hijack the old relocation. Since we need two
6150 relocations for this use a "composite" reloc. */
6151 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
6153 irel
->r_offset
= trampoff
+ insn_offset
;
6154 if (r_type
== R_PPC_PLTREL24
)
6157 /* Record the fixup so we don't do it again this section. */
6158 f
= bfd_malloc (sizeof (*f
));
6162 f
->trampoff
= trampoff
;
6170 val
= f
->trampoff
- roff
;
6171 if (val
>= max_branch_offset
)
6174 /* Nop out the reloc, since we're finalizing things here. */
6175 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
6178 /* Get the section contents. */
6179 if (contents
== NULL
)
6181 /* Get cached copy if it exists. */
6182 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
6183 contents
= elf_section_data (isec
)->this_hdr
.contents
;
6186 /* Go get them off disk. */
6187 if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
6192 /* Fix up the existing branch to hit the trampoline. */
6193 hit_addr
= contents
+ roff
;
6197 case R_PPC_LOCAL24PC
:
6198 case R_PPC_PLTREL24
:
6199 t0
= bfd_get_32 (abfd
, hit_addr
);
6201 t0
|= val
& 0x3fffffc;
6202 bfd_put_32 (abfd
, t0
, hit_addr
);
6206 case R_PPC_REL14_BRTAKEN
:
6207 case R_PPC_REL14_BRNTAKEN
:
6208 t0
= bfd_get_32 (abfd
, hit_addr
);
6211 bfd_put_32 (abfd
, t0
, hit_addr
);
6216 /* Write out the trampolines. */
6226 struct one_fixup
*f
= fixups
;
6227 fixups
= fixups
->next
;
6232 contents
= bfd_realloc_or_free (contents
, trampoff
);
6233 if (contents
== NULL
)
6236 isec
->size
= (isec
->size
+ 3) & (bfd_vma
) -4;
6237 /* Branch around the trampolines. */
6238 val
= B
+ trampoff
- isec
->size
;
6239 dest
= contents
+ isec
->size
;
6240 isec
->size
= trampoff
;
6241 bfd_put_32 (abfd
, val
, dest
);
6244 if (link_info
->shared
)
6246 stub
= shared_stub_entry
;
6247 size
= ARRAY_SIZE (shared_stub_entry
);
6252 size
= ARRAY_SIZE (stub_entry
);
6256 while (dest
< contents
+ trampoff
)
6258 bfd_put_32 (abfd
, stub
[i
], dest
);
6264 BFD_ASSERT (i
== 0);
6268 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
6270 if (! link_info
->keep_memory
)
6274 /* Cache the symbols for elf_link_input_bfd. */
6275 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
6279 if (contents
!= NULL
6280 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
6282 if (!changes
&& !link_info
->keep_memory
)
6286 /* Cache the section contents for elf_link_input_bfd. */
6287 elf_section_data (isec
)->this_hdr
.contents
= contents
;
6293 /* Append sufficient NOP relocs so we can write out relocation
6294 information for the trampolines. */
6295 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
6296 * sizeof (*new_relocs
));
6301 memcpy (new_relocs
, internal_relocs
,
6302 isec
->reloc_count
* sizeof (*new_relocs
));
6303 for (ix
= changes
; ix
--;)
6305 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
6307 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
6309 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
6310 free (internal_relocs
);
6311 elf_section_data (isec
)->relocs
= new_relocs
;
6312 isec
->reloc_count
+= changes
;
6313 elf_section_data (isec
)->rel_hdr
.sh_size
6314 += changes
* elf_section_data (isec
)->rel_hdr
.sh_entsize
;
6316 else if (elf_section_data (isec
)->relocs
!= internal_relocs
)
6317 free (internal_relocs
);
6319 *again
= changes
!= 0;
6320 if (!*again
&& link_info
->relocatable
)
6322 /* Convert the internal relax relocs to external form. */
6323 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6324 if (ELF32_R_TYPE (irel
->r_info
) == R_PPC_RELAX32
)
6326 unsigned long r_symndx
= ELF32_R_SYM (irel
->r_info
);
6328 /* Rewrite the reloc and convert one of the trailing nop
6329 relocs to describe this relocation. */
6330 BFD_ASSERT (ELF32_R_TYPE (irelend
[-1].r_info
) == R_PPC_NONE
);
6331 /* The relocs are at the bottom 2 bytes */
6332 irel
[0].r_offset
+= 2;
6333 memmove (irel
+ 1, irel
, (irelend
- irel
- 1) * sizeof (*irel
));
6334 irel
[0].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
6335 irel
[1].r_offset
+= 4;
6336 irel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
6344 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
6346 if (contents
!= NULL
6347 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
6349 if (internal_relocs
!= NULL
6350 && elf_section_data (isec
)->relocs
!= internal_relocs
)
6351 free (internal_relocs
);
6355 /* What to do when ld finds relocations against symbols defined in
6356 discarded sections. */
6359 ppc_elf_action_discarded (asection
*sec
)
6361 if (strcmp (".fixup", sec
->name
) == 0)
6364 if (strcmp (".got2", sec
->name
) == 0)
6367 return _bfd_elf_default_action_discarded (sec
);
6370 /* Fill in the address for a pointer generated in a linker section. */
6373 elf_finish_pointer_linker_section (bfd
*input_bfd
,
6374 elf_linker_section_t
*lsect
,
6375 struct elf_link_hash_entry
*h
,
6377 const Elf_Internal_Rela
*rel
)
6379 elf_linker_section_pointers_t
*linker_section_ptr
;
6381 BFD_ASSERT (lsect
!= NULL
);
6385 /* Handle global symbol. */
6386 struct ppc_elf_link_hash_entry
*eh
;
6388 eh
= (struct ppc_elf_link_hash_entry
*) h
;
6389 BFD_ASSERT (eh
->elf
.def_regular
);
6390 linker_section_ptr
= eh
->linker_section_pointer
;
6394 /* Handle local symbol. */
6395 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
6397 BFD_ASSERT (is_ppc_elf (input_bfd
));
6398 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
6399 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
6402 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
6405 BFD_ASSERT (linker_section_ptr
!= NULL
);
6407 /* Offset will always be a multiple of four, so use the bottom bit
6408 as a "written" flag. */
6409 if ((linker_section_ptr
->offset
& 1) == 0)
6411 bfd_put_32 (lsect
->section
->owner
,
6412 relocation
+ linker_section_ptr
->addend
,
6413 lsect
->section
->contents
+ linker_section_ptr
->offset
);
6414 linker_section_ptr
->offset
+= 1;
6417 relocation
= (lsect
->section
->output_offset
6418 + linker_section_ptr
->offset
- 1
6423 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6424 lsect
->name
, (long) relocation
, (long) relocation
);
6427 /* Subtract out the addend, because it will get added back in by the normal
6429 return relocation
- linker_section_ptr
->addend
;
6432 #define PPC_LO(v) ((v) & 0xffff)
6433 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6434 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6437 write_glink_stub (struct plt_entry
*ent
, asection
*plt_sec
,
6438 struct bfd_link_info
*info
)
6440 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6441 bfd
*output_bfd
= info
->output_bfd
;
6445 plt
= ((ent
->plt
.offset
& ~1)
6446 + plt_sec
->output_section
->vma
6447 + plt_sec
->output_offset
);
6448 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
6450 if (info
->shared
|| info
->pie
)
6454 if (ent
->addend
>= 32768)
6456 + ent
->sec
->output_section
->vma
6457 + ent
->sec
->output_offset
);
6458 else if (htab
->elf
.hgot
!= NULL
)
6459 got
= SYM_VAL (htab
->elf
.hgot
);
6463 if (plt
+ 0x8000 < 0x10000)
6465 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
6467 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
6469 bfd_put_32 (output_bfd
, BCTR
, p
);
6471 bfd_put_32 (output_bfd
, NOP
, p
);
6476 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
6478 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
6480 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
6482 bfd_put_32 (output_bfd
, BCTR
, p
);
6488 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
6490 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
6492 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
6494 bfd_put_32 (output_bfd
, BCTR
, p
);
6499 /* The RELOCATE_SECTION function is called by the ELF backend linker
6500 to handle the relocations for a section.
6502 The relocs are always passed as Rela structures; if the section
6503 actually uses Rel structures, the r_addend field will always be
6506 This function is responsible for adjust the section contents as
6507 necessary, and (if using Rela relocs and generating a
6508 relocatable output file) adjusting the reloc addend as
6511 This function does not have to worry about setting the reloc
6512 address or the reloc symbol index.
6514 LOCAL_SYMS is a pointer to the swapped in local symbols.
6516 LOCAL_SECTIONS is an array giving the section in the input file
6517 corresponding to the st_shndx field of each local symbol.
6519 The global hash table entry for the global symbols can be found
6520 via elf_sym_hashes (input_bfd).
6522 When generating relocatable output, this function must handle
6523 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6524 going to be the section symbol corresponding to the output
6525 section, which means that the addend must be adjusted
6529 ppc_elf_relocate_section (bfd
*output_bfd
,
6530 struct bfd_link_info
*info
,
6532 asection
*input_section
,
6534 Elf_Internal_Rela
*relocs
,
6535 Elf_Internal_Sym
*local_syms
,
6536 asection
**local_sections
)
6538 Elf_Internal_Shdr
*symtab_hdr
;
6539 struct elf_link_hash_entry
**sym_hashes
;
6540 struct ppc_elf_link_hash_table
*htab
;
6541 Elf_Internal_Rela
*rel
;
6542 Elf_Internal_Rela
*relend
;
6543 Elf_Internal_Rela outrel
;
6545 asection
*got2
, *sreloc
= NULL
;
6546 bfd_vma
*local_got_offsets
;
6547 bfd_boolean ret
= TRUE
;
6548 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
6549 bfd_boolean is_vxworks_tls
;
6552 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6553 "%ld relocations%s",
6554 input_bfd
, input_section
,
6555 (long) input_section
->reloc_count
,
6556 (info
->relocatable
) ? " (relocatable)" : "");
6559 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
6561 /* Initialize howto table if not already done. */
6562 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
6563 ppc_elf_howto_init ();
6565 htab
= ppc_elf_hash_table (info
);
6566 local_got_offsets
= elf_local_got_offsets (input_bfd
);
6567 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
6568 sym_hashes
= elf_sym_hashes (input_bfd
);
6569 /* We have to handle relocations in vxworks .tls_vars sections
6570 specially, because the dynamic loader is 'weird'. */
6571 is_vxworks_tls
= (htab
->is_vxworks
&& info
->shared
6572 && !strcmp (input_section
->output_section
->name
,
6575 relend
= relocs
+ input_section
->reloc_count
;
6576 for (; rel
< relend
; rel
++)
6578 enum elf_ppc_reloc_type r_type
;
6580 bfd_reloc_status_type r
;
6581 Elf_Internal_Sym
*sym
;
6583 struct elf_link_hash_entry
*h
;
6584 const char *sym_name
;
6585 reloc_howto_type
*howto
;
6586 unsigned long r_symndx
;
6588 bfd_vma branch_bit
, insn
, from
;
6589 bfd_boolean unresolved_reloc
;
6591 unsigned int tls_type
, tls_mask
, tls_gd
;
6592 struct plt_entry
**ifunc
;
6594 r_type
= ELF32_R_TYPE (rel
->r_info
);
6598 unresolved_reloc
= FALSE
;
6600 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6602 if (r_symndx
< symtab_hdr
->sh_info
)
6604 sym
= local_syms
+ r_symndx
;
6605 sec
= local_sections
[r_symndx
];
6606 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
6608 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6612 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6613 r_symndx
, symtab_hdr
, sym_hashes
,
6615 unresolved_reloc
, warned
);
6617 sym_name
= h
->root
.root
.string
;
6620 if (sec
!= NULL
&& elf_discarded_section (sec
))
6622 /* For relocs against symbols from removed linkonce sections,
6623 or sections discarded by a linker script, we just want the
6624 section contents zeroed. Avoid any special processing. */
6626 if (r_type
< R_PPC_max
)
6627 howto
= ppc_elf_howto_table
[r_type
];
6628 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
6634 if (info
->relocatable
)
6637 && r_type
== R_PPC_PLTREL24
6638 && rel
->r_addend
>= 32768)
6640 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6641 addend specifies the GOT pointer offset within .got2. */
6642 rel
->r_addend
+= got2
->output_offset
;
6647 /* TLS optimizations. Replace instruction sequences and relocs
6648 based on information we collected in tls_optimize. We edit
6649 RELOCS so that --emit-relocs will output something sensible
6650 for the final instruction stream. */
6654 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
6655 else if (local_got_offsets
!= NULL
)
6657 struct plt_entry
**local_plt
;
6660 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
6661 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
6662 tls_mask
= lgot_masks
[r_symndx
];
6665 /* Ensure reloc mapping code below stays sane. */
6666 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
6667 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
6668 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
6669 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
6670 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
6671 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
6672 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
6673 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
6680 case R_PPC_GOT_TPREL16
:
6681 case R_PPC_GOT_TPREL16_LO
:
6682 if ((tls_mask
& TLS_TLS
) != 0
6683 && (tls_mask
& TLS_TPREL
) == 0)
6686 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
6688 insn
|= 0x3c020000; /* addis 0,2,0 */
6689 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
6690 r_type
= R_PPC_TPREL16_HA
;
6691 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6696 if ((tls_mask
& TLS_TLS
) != 0
6697 && (tls_mask
& TLS_TPREL
) == 0)
6700 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6701 if ((insn
& ((31 << 26) | (31 << 11)))
6702 == ((31 << 26) | (2 << 11)))
6703 rtra
= insn
& ((1 << 26) - (1 << 16));
6704 else if ((insn
& ((31 << 26) | (31 << 16)))
6705 == ((31 << 26) | (2 << 16)))
6706 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
6709 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
6712 else if ((insn
& (31 << 1)) == 23 << 1
6713 && ((insn
& (31 << 6)) < 14 << 6
6714 || ((insn
& (31 << 6)) >= 16 << 6
6715 && (insn
& (31 << 6)) < 24 << 6)))
6716 /* load and store indexed -> dform. */
6717 insn
= (32 | ((insn
>> 6) & 31)) << 26;
6718 else if ((insn
& (31 << 1)) == 21 << 1
6719 && (insn
& (0x1a << 6)) == 0)
6720 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6721 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
6722 | ((insn
>> 6) & 1));
6723 else if ((insn
& (31 << 1)) == 21 << 1
6724 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
6726 insn
= (58 << 26) | 2;
6730 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6731 r_type
= R_PPC_TPREL16_LO
;
6732 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6734 /* Was PPC_TLS which sits on insn boundary, now
6735 PPC_TPREL16_LO which is at low-order half-word. */
6736 rel
->r_offset
+= d_offset
;
6740 case R_PPC_GOT_TLSGD16_HI
:
6741 case R_PPC_GOT_TLSGD16_HA
:
6742 tls_gd
= TLS_TPRELGD
;
6743 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
6747 case R_PPC_GOT_TLSLD16_HI
:
6748 case R_PPC_GOT_TLSLD16_HA
:
6749 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
6752 if ((tls_mask
& tls_gd
) != 0)
6753 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
6754 + R_PPC_GOT_TPREL16
);
6757 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
6758 rel
->r_offset
-= d_offset
;
6759 r_type
= R_PPC_NONE
;
6761 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6765 case R_PPC_GOT_TLSGD16
:
6766 case R_PPC_GOT_TLSGD16_LO
:
6767 tls_gd
= TLS_TPRELGD
;
6768 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
6772 case R_PPC_GOT_TLSLD16
:
6773 case R_PPC_GOT_TLSLD16_LO
:
6774 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
6776 unsigned int insn1
, insn2
;
6780 offset
= (bfd_vma
) -1;
6781 /* If not using the newer R_PPC_TLSGD/LD to mark
6782 __tls_get_addr calls, we must trust that the call
6783 stays with its arg setup insns, ie. that the next
6784 reloc is the __tls_get_addr call associated with
6785 the current reloc. Edit both insns. */
6786 if (input_section
->has_tls_get_addr_call
6788 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
6789 htab
->tls_get_addr
))
6790 offset
= rel
[1].r_offset
;
6791 if ((tls_mask
& tls_gd
) != 0)
6794 insn1
= bfd_get_32 (output_bfd
,
6795 contents
+ rel
->r_offset
- d_offset
);
6796 insn1
&= (1 << 26) - 1;
6797 insn1
|= 32 << 26; /* lwz */
6798 if (offset
!= (bfd_vma
) -1)
6801 = ELF32_R_INFO (ELF32_R_SYM (rel
[1].r_info
),
6803 insn2
= 0x7c631214; /* add 3,3,2 */
6804 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
6806 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
6807 + R_PPC_GOT_TPREL16
);
6808 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6813 insn1
= 0x3c620000; /* addis 3,2,0 */
6816 /* Was an LD reloc. */
6818 r_symndx
< symtab_hdr
->sh_info
;
6820 if (local_sections
[r_symndx
] == sec
)
6822 if (r_symndx
>= symtab_hdr
->sh_info
)
6824 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6826 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
6827 + sec
->output_offset
6828 + sec
->output_section
->vma
);
6830 r_type
= R_PPC_TPREL16_HA
;
6831 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6832 if (offset
!= (bfd_vma
) -1)
6834 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
6835 rel
[1].r_offset
= offset
+ d_offset
;
6836 rel
[1].r_addend
= rel
->r_addend
;
6837 insn2
= 0x38630000; /* addi 3,3,0 */
6838 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
6841 bfd_put_32 (output_bfd
, insn1
,
6842 contents
+ rel
->r_offset
- d_offset
);
6845 /* We changed the symbol on an LD reloc. Start over
6846 in order to get h, sym, sec etc. right. */
6854 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
6857 bfd_vma offset
= rel
->r_offset
;
6859 if ((tls_mask
& TLS_TPRELGD
) != 0)
6862 r_type
= R_PPC_NONE
;
6863 insn2
= 0x7c631214; /* add 3,3,2 */
6868 r_type
= R_PPC_TPREL16_LO
;
6869 rel
->r_offset
+= d_offset
;
6870 insn2
= 0x38630000; /* addi 3,3,0 */
6872 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6873 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
6874 /* Zap the reloc on the _tls_get_addr call too. */
6875 BFD_ASSERT (offset
== rel
[1].r_offset
);
6876 rel
[1].r_info
= ELF32_R_INFO (ELF32_R_SYM (rel
[1].r_info
),
6882 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
6887 r_symndx
< symtab_hdr
->sh_info
;
6889 if (local_sections
[r_symndx
] == sec
)
6891 if (r_symndx
>= symtab_hdr
->sh_info
)
6893 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6895 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
6896 + sec
->output_offset
6897 + sec
->output_section
->vma
);
6899 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
6900 rel
->r_offset
+= d_offset
;
6901 insn2
= 0x38630000; /* addi 3,3,0 */
6902 bfd_put_32 (output_bfd
, insn2
,
6903 contents
+ rel
->r_offset
- d_offset
);
6904 /* Zap the reloc on the _tls_get_addr call too. */
6905 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
6906 rel
[1].r_info
= ELF32_R_INFO (ELF32_R_SYM (rel
[1].r_info
),
6914 /* Handle other relocations that tweak non-addend part of insn. */
6921 /* Branch taken prediction relocations. */
6922 case R_PPC_ADDR14_BRTAKEN
:
6923 case R_PPC_REL14_BRTAKEN
:
6924 branch_bit
= BRANCH_PREDICT_BIT
;
6927 /* Branch not taken prediction relocations. */
6928 case R_PPC_ADDR14_BRNTAKEN
:
6929 case R_PPC_REL14_BRNTAKEN
:
6930 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6931 insn
&= ~BRANCH_PREDICT_BIT
;
6934 from
= (rel
->r_offset
6935 + input_section
->output_offset
6936 + input_section
->output_section
->vma
);
6938 /* Invert 'y' bit if not the default. */
6939 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
6940 insn
^= BRANCH_PREDICT_BIT
;
6942 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6947 if (!htab
->is_vxworks
)
6949 struct plt_entry
*ent
;
6953 if (h
->type
== STT_GNU_IFUNC
)
6954 ifunc
= &h
->plt
.plist
;
6956 else if (local_got_offsets
!= NULL
6957 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
6959 struct plt_entry
**local_plt
;
6961 local_plt
= (struct plt_entry
**) (local_got_offsets
6962 + symtab_hdr
->sh_info
);
6963 ifunc
= local_plt
+ r_symndx
;
6969 || is_branch_reloc (r_type
)))
6972 if (r_type
== R_PPC_PLTREL24
)
6973 addend
= rel
->r_addend
;
6974 ent
= find_plt_ent (ifunc
, got2
, addend
);
6978 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
6980 Elf_Internal_Rela rela
;
6983 rela
.r_offset
= (htab
->iplt
->output_section
->vma
6984 + htab
->iplt
->output_offset
6986 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
6987 rela
.r_addend
= relocation
;
6988 loc
= htab
->reliplt
->contents
;
6989 loc
+= (htab
->reliplt
->reloc_count
++
6990 * sizeof (Elf32_External_Rela
));
6991 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
6993 ent
->plt
.offset
|= 1;
6995 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
6997 write_glink_stub (ent
, htab
->iplt
, info
);
6998 ent
->glink_offset
|= 1;
7001 unresolved_reloc
= FALSE
;
7002 if (htab
->plt_type
== PLT_NEW
7003 || !htab
->elf
.dynamic_sections_created
7005 relocation
= (htab
->glink
->output_section
->vma
7006 + htab
->glink
->output_offset
7007 + (ent
->glink_offset
& ~1));
7009 relocation
= (htab
->plt
->output_section
->vma
7010 + htab
->plt
->output_offset
7015 addend
= rel
->r_addend
;
7018 if (r_type
< R_PPC_max
)
7019 howto
= ppc_elf_howto_table
[r_type
];
7023 (*_bfd_error_handler
)
7024 (_("%B: unknown relocation type %d for symbol %s"),
7025 input_bfd
, (int) r_type
, sym_name
);
7027 bfd_set_error (bfd_error_bad_value
);
7035 case R_PPC_EMB_MRKREF
:
7036 case R_PPC_GNU_VTINHERIT
:
7037 case R_PPC_GNU_VTENTRY
:
7040 /* GOT16 relocations. Like an ADDR16 using the symbol's
7041 address in the GOT as relocation value instead of the
7042 symbol's value itself. Also, create a GOT entry for the
7043 symbol and put the symbol value there. */
7044 case R_PPC_GOT_TLSGD16
:
7045 case R_PPC_GOT_TLSGD16_LO
:
7046 case R_PPC_GOT_TLSGD16_HI
:
7047 case R_PPC_GOT_TLSGD16_HA
:
7048 tls_type
= TLS_TLS
| TLS_GD
;
7051 case R_PPC_GOT_TLSLD16
:
7052 case R_PPC_GOT_TLSLD16_LO
:
7053 case R_PPC_GOT_TLSLD16_HI
:
7054 case R_PPC_GOT_TLSLD16_HA
:
7055 tls_type
= TLS_TLS
| TLS_LD
;
7058 case R_PPC_GOT_TPREL16
:
7059 case R_PPC_GOT_TPREL16_LO
:
7060 case R_PPC_GOT_TPREL16_HI
:
7061 case R_PPC_GOT_TPREL16_HA
:
7062 tls_type
= TLS_TLS
| TLS_TPREL
;
7065 case R_PPC_GOT_DTPREL16
:
7066 case R_PPC_GOT_DTPREL16_LO
:
7067 case R_PPC_GOT_DTPREL16_HI
:
7068 case R_PPC_GOT_DTPREL16_HA
:
7069 tls_type
= TLS_TLS
| TLS_DTPREL
;
7073 case R_PPC_GOT16_LO
:
7074 case R_PPC_GOT16_HI
:
7075 case R_PPC_GOT16_HA
:
7079 /* Relocation is to the entry for this symbol in the global
7085 if (htab
->got
== NULL
)
7089 if (tls_type
== (TLS_TLS
| TLS_LD
)
7091 || !h
->def_dynamic
))
7092 offp
= &htab
->tlsld_got
.offset
;
7096 dyn
= htab
->elf
.dynamic_sections_created
;
7097 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
7099 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
7100 /* This is actually a static link, or it is a
7101 -Bsymbolic link and the symbol is defined
7102 locally, or the symbol was forced to be local
7103 because of a version file. */
7108 unresolved_reloc
= FALSE
;
7110 offp
= &h
->got
.offset
;
7114 if (local_got_offsets
== NULL
)
7116 offp
= &local_got_offsets
[r_symndx
];
7119 /* The offset must always be a multiple of 4. We use the
7120 least significant bit to record whether we have already
7121 processed this entry. */
7128 unsigned int tls_m
= (tls_mask
7129 & (TLS_LD
| TLS_GD
| TLS_DTPREL
7130 | TLS_TPREL
| TLS_TPRELGD
));
7132 if (offp
== &htab
->tlsld_got
.offset
)
7138 /* We might have multiple got entries for this sym.
7139 Initialize them all. */
7144 if ((tls_m
& TLS_LD
) != 0)
7146 tls_ty
= TLS_TLS
| TLS_LD
;
7149 else if ((tls_m
& TLS_GD
) != 0)
7151 tls_ty
= TLS_TLS
| TLS_GD
;
7154 else if ((tls_m
& TLS_DTPREL
) != 0)
7156 tls_ty
= TLS_TLS
| TLS_DTPREL
;
7157 tls_m
&= ~TLS_DTPREL
;
7159 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
7161 tls_ty
= TLS_TLS
| TLS_TPREL
;
7165 /* Generate relocs for the dynamic linker. */
7167 if ((info
->shared
|| indx
!= 0)
7168 && (offp
== &htab
->tlsld_got
.offset
7170 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7171 || h
->root
.type
!= bfd_link_hash_undefweak
))
7172 rsec
= htab
->relgot
;
7173 else if (ifunc
!= NULL
)
7174 rsec
= htab
->reliplt
;
7177 outrel
.r_offset
= (htab
->got
->output_section
->vma
7178 + htab
->got
->output_offset
7180 outrel
.r_addend
= 0;
7181 if (tls_ty
& (TLS_LD
| TLS_GD
))
7183 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
7184 if (tls_ty
== (TLS_TLS
| TLS_GD
))
7186 loc
= rsec
->contents
;
7187 loc
+= (rsec
->reloc_count
++
7188 * sizeof (Elf32_External_Rela
));
7189 bfd_elf32_swap_reloca_out (output_bfd
,
7191 outrel
.r_offset
+= 4;
7193 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
7196 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
7197 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
7198 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
7199 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
7201 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
7202 else if (ifunc
!= NULL
)
7203 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
7205 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
7206 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
7208 outrel
.r_addend
+= relocation
;
7209 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
7210 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
7212 loc
= rsec
->contents
;
7213 loc
+= (rsec
->reloc_count
++
7214 * sizeof (Elf32_External_Rela
));
7215 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
7218 /* Init the .got section contents if we're not
7219 emitting a reloc. */
7222 bfd_vma value
= relocation
;
7224 if (tls_ty
== (TLS_TLS
| TLS_LD
))
7226 else if (tls_ty
!= 0)
7228 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7229 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
7230 value
+= DTP_OFFSET
- TP_OFFSET
;
7232 if (tls_ty
== (TLS_TLS
| TLS_GD
))
7234 bfd_put_32 (output_bfd
, value
,
7235 htab
->got
->contents
+ off
+ 4);
7239 bfd_put_32 (output_bfd
, value
,
7240 htab
->got
->contents
+ off
);
7244 if (tls_ty
& (TLS_LD
| TLS_GD
))
7253 if (off
>= (bfd_vma
) -2)
7256 if ((tls_type
& TLS_TLS
) != 0)
7258 if (tls_type
!= (TLS_TLS
| TLS_LD
))
7260 if ((tls_mask
& TLS_LD
) != 0
7262 || !h
->def_dynamic
))
7264 if (tls_type
!= (TLS_TLS
| TLS_GD
))
7266 if ((tls_mask
& TLS_GD
) != 0)
7268 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
7270 if ((tls_mask
& TLS_DTPREL
) != 0)
7277 relocation
= (htab
->got
->output_section
->vma
7278 + htab
->got
->output_offset
7280 - SYM_VAL (htab
->elf
.hgot
));
7282 /* Addends on got relocations don't make much sense.
7283 x+off@got is actually x@got+off, and since the got is
7284 generated by a hash table traversal, the value in the
7285 got at entry m+n bears little relation to the entry m. */
7287 (*_bfd_error_handler
)
7288 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7291 (long) rel
->r_offset
,
7297 /* Relocations that need no special processing. */
7298 case R_PPC_LOCAL24PC
:
7299 /* It makes no sense to point a local relocation
7300 at a symbol not in this object. */
7301 if (unresolved_reloc
)
7303 if (! (*info
->callbacks
->undefined_symbol
) (info
,
7304 h
->root
.root
.string
,
7314 case R_PPC_DTPREL16
:
7315 case R_PPC_DTPREL16_LO
:
7316 case R_PPC_DTPREL16_HI
:
7317 case R_PPC_DTPREL16_HA
:
7318 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7321 /* Relocations that may need to be propagated if this is a shared
7324 case R_PPC_TPREL16_LO
:
7325 case R_PPC_TPREL16_HI
:
7326 case R_PPC_TPREL16_HA
:
7327 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
7328 /* The TPREL16 relocs shouldn't really be used in shared
7329 libs as they will result in DT_TEXTREL being set, but
7330 support them anyway. */
7334 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
7337 case R_PPC_DTPREL32
:
7338 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7341 case R_PPC_DTPMOD32
:
7347 case R_PPC_REL16_LO
:
7348 case R_PPC_REL16_HI
:
7349 case R_PPC_REL16_HA
:
7353 if (h
== NULL
|| h
== htab
->elf
.hgot
)
7359 case R_PPC_ADDR16_LO
:
7360 case R_PPC_ADDR16_HI
:
7361 case R_PPC_ADDR16_HA
:
7368 case R_PPC_REL14_BRTAKEN
:
7369 case R_PPC_REL14_BRNTAKEN
:
7370 /* If these relocations are not to a named symbol, they can be
7371 handled right here, no need to bother the dynamic linker. */
7372 if (SYMBOL_CALLS_LOCAL (info
, h
)
7373 || h
== htab
->elf
.hgot
)
7379 case R_PPC_ADDR14_BRTAKEN
:
7380 case R_PPC_ADDR14_BRNTAKEN
:
7381 if (h
!= NULL
&& !info
->shared
)
7386 if ((input_section
->flags
& SEC_ALLOC
) == 0
7392 && ((h
->root
.type
== bfd_link_hash_undefined
7393 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
7394 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
7395 || (h
->root
.type
== bfd_link_hash_undefweak
7396 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)))
7397 && (must_be_dyn_reloc (info
, r_type
)
7398 || !SYMBOL_CALLS_LOCAL (info
, h
)))
7399 || (ELIMINATE_COPY_RELOCS
7404 && !h
->def_regular
))
7409 fprintf (stderr
, "ppc_elf_relocate_section needs to "
7410 "create relocation for %s\n",
7411 (h
&& h
->root
.root
.string
7412 ? h
->root
.root
.string
: "<unknown>"));
7415 /* When generating a shared object, these relocations
7416 are copied into the output file to be resolved at run
7420 sreloc
= elf_section_data (input_section
)->sreloc
;
7421 if (!htab
->elf
.dynamic_sections_created
)
7422 sreloc
= htab
->reliplt
;
7429 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
7431 if (outrel
.r_offset
== (bfd_vma
) -1
7432 || outrel
.r_offset
== (bfd_vma
) -2)
7433 skip
= (int) outrel
.r_offset
;
7434 outrel
.r_offset
+= (input_section
->output_section
->vma
7435 + input_section
->output_offset
);
7438 memset (&outrel
, 0, sizeof outrel
);
7440 && (h
->root
.type
== bfd_link_hash_undefined
7441 || h
->root
.type
== bfd_link_hash_undefweak
))
7442 || !SYMBOL_REFERENCES_LOCAL (info
, h
))
7444 unresolved_reloc
= FALSE
;
7445 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
7446 outrel
.r_addend
= rel
->r_addend
;
7450 outrel
.r_addend
= relocation
+ rel
->r_addend
;
7452 if (r_type
!= R_PPC_ADDR32
)
7458 /* If we get here when building a static
7459 executable, then the libc startup function
7460 responsible for applying indirect function
7461 relocations is going to complain about
7463 If we get here when building a dynamic
7464 executable, it will be because we have
7465 a text relocation. The dynamic loader
7466 will set the text segment writable and
7467 non-executable to apply text relocations.
7468 So we'll segfault when trying to run the
7469 indirection function to resolve the reloc. */
7470 (*_bfd_error_handler
)
7471 (_("%B(%A+0x%lx): relocation %s for indirect "
7472 "function %s unsupported"),
7475 (long) rel
->r_offset
,
7480 else if (r_symndx
== 0 || bfd_is_abs_section (sec
))
7482 else if (sec
== NULL
|| sec
->owner
== NULL
)
7484 bfd_set_error (bfd_error_bad_value
);
7491 /* We are turning this relocation into one
7492 against a section symbol. It would be
7493 proper to subtract the symbol's value,
7494 osec->vma, from the emitted reloc addend,
7495 but ld.so expects buggy relocs.
7496 FIXME: Why not always use a zero index? */
7497 osec
= sec
->output_section
;
7498 indx
= elf_section_data (osec
)->dynindx
;
7501 osec
= htab
->elf
.text_index_section
;
7502 indx
= elf_section_data (osec
)->dynindx
;
7504 BFD_ASSERT (indx
!= 0);
7507 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7508 indx
, osec
->name
, osec
->flags
,
7509 h
->root
.root
.string
);
7513 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
7515 else if (ifunc
!= NULL
)
7516 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
7518 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
7521 loc
= sreloc
->contents
;
7522 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
7523 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
7528 /* This reloc will be computed at runtime. We clear the memory
7529 so that it contains predictable value. */
7531 && ((input_section
->flags
& SEC_ALLOC
) != 0
7532 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
7534 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
7541 case R_PPC_RELAX32PC_PLT
:
7542 case R_PPC_RELAX32_PLT
:
7545 struct plt_entry
*ent
= find_plt_ent (&h
->plt
.plist
, got2
,
7547 if (htab
->plt_type
== PLT_NEW
)
7548 relocation
= (htab
->glink
->output_section
->vma
7549 + htab
->glink
->output_offset
7550 + ent
->glink_offset
);
7552 relocation
= (htab
->plt
->output_section
->vma
7553 + htab
->plt
->output_offset
7556 if (r_type
== R_PPC_RELAX32_PLT
)
7560 case R_PPC_RELAX32PC
:
7561 relocation
-= (input_section
->output_section
->vma
7562 + input_section
->output_offset
7563 + rel
->r_offset
- 4);
7572 t0
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7573 t1
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
+ 4);
7575 /* We're clearing the bits for R_PPC_ADDR16_HA
7576 and R_PPC_ADDR16_LO here. */
7580 /* t0 is HA, t1 is LO */
7581 relocation
+= addend
;
7582 t0
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
7583 t1
|= relocation
& 0xffff;
7585 bfd_put_32 (output_bfd
, t0
, contents
+ rel
->r_offset
);
7586 bfd_put_32 (output_bfd
, t1
, contents
+ rel
->r_offset
+ 4);
7588 /* Rewrite the reloc and convert one of the trailing nop
7589 relocs to describe this relocation. */
7590 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
7591 /* The relocs are at the bottom 2 bytes */
7592 rel
[0].r_offset
+= 2;
7593 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
7594 rel
[0].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
7595 rel
[1].r_offset
+= 4;
7596 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
7601 /* Indirect .sdata relocation. */
7602 case R_PPC_EMB_SDAI16
:
7603 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
7605 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
7606 h
, relocation
, rel
);
7609 /* Indirect .sdata2 relocation. */
7610 case R_PPC_EMB_SDA2I16
:
7611 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
7613 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
7614 h
, relocation
, rel
);
7617 /* Handle the TOC16 reloc. We want to use the offset within the .got
7618 section, not the actual VMA. This is appropriate when generating
7619 an embedded ELF object, for which the .got section acts like the
7620 AIX .toc section. */
7621 case R_PPC_TOC16
: /* phony GOT16 relocations */
7622 if (sec
== NULL
|| sec
->output_section
== NULL
)
7624 unresolved_reloc
= TRUE
;
7627 BFD_ASSERT (strcmp (bfd_get_section_name (abfd
, sec
), ".got") == 0
7628 || strcmp (bfd_get_section_name (abfd
, sec
), ".cgot") == 0);
7630 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
7633 case R_PPC_PLTREL24
:
7634 if (h
== NULL
|| ifunc
!= NULL
)
7636 /* Relocation is to the entry for this symbol in the
7637 procedure linkage table. */
7639 struct plt_entry
*ent
= find_plt_ent (&h
->plt
.plist
, got2
, addend
);
7643 || htab
->plt
== NULL
)
7645 /* We didn't make a PLT entry for this symbol. This
7646 happens when statically linking PIC code, or when
7647 using -Bsymbolic. */
7651 unresolved_reloc
= FALSE
;
7652 if (htab
->plt_type
== PLT_NEW
)
7653 relocation
= (htab
->glink
->output_section
->vma
7654 + htab
->glink
->output_offset
7655 + ent
->glink_offset
);
7657 relocation
= (htab
->plt
->output_section
->vma
7658 + htab
->plt
->output_offset
7663 /* Relocate against _SDA_BASE_. */
7664 case R_PPC_SDAREL16
:
7668 if (sec
== NULL
|| sec
->output_section
== NULL
)
7670 unresolved_reloc
= TRUE
;
7674 name
= bfd_get_section_name (abfd
, sec
->output_section
);
7675 if (! ((CONST_STRNEQ (name
, ".sdata")
7676 && (name
[6] == 0 || name
[6] == '.'))
7677 || (CONST_STRNEQ (name
, ".sbss")
7678 && (name
[5] == 0 || name
[5] == '.'))))
7680 (*_bfd_error_handler
)
7681 (_("%B: the target (%s) of a %s relocation is "
7682 "in the wrong output section (%s)"),
7688 addend
-= SYM_VAL (htab
->sdata
[0].sym
);
7692 /* Relocate against _SDA2_BASE_. */
7693 case R_PPC_EMB_SDA2REL
:
7697 if (sec
== NULL
|| sec
->output_section
== NULL
)
7699 unresolved_reloc
= TRUE
;
7703 name
= bfd_get_section_name (abfd
, sec
->output_section
);
7704 if (! (CONST_STRNEQ (name
, ".sdata2")
7705 || CONST_STRNEQ (name
, ".sbss2")))
7707 (*_bfd_error_handler
)
7708 (_("%B: the target (%s) of a %s relocation is "
7709 "in the wrong output section (%s)"),
7715 bfd_set_error (bfd_error_bad_value
);
7719 addend
-= SYM_VAL (htab
->sdata
[1].sym
);
7723 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7724 case R_PPC_EMB_SDA21
:
7725 case R_PPC_EMB_RELSDA
:
7730 if (sec
== NULL
|| sec
->output_section
== NULL
)
7732 unresolved_reloc
= TRUE
;
7736 name
= bfd_get_section_name (abfd
, sec
->output_section
);
7737 if (((CONST_STRNEQ (name
, ".sdata")
7738 && (name
[6] == 0 || name
[6] == '.'))
7739 || (CONST_STRNEQ (name
, ".sbss")
7740 && (name
[5] == 0 || name
[5] == '.'))))
7743 addend
-= SYM_VAL (htab
->sdata
[0].sym
);
7745 else if (CONST_STRNEQ (name
, ".sdata2")
7746 || CONST_STRNEQ (name
, ".sbss2"))
7749 addend
-= SYM_VAL (htab
->sdata
[1].sym
);
7751 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
7752 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
7758 (*_bfd_error_handler
)
7759 (_("%B: the target (%s) of a %s relocation is "
7760 "in the wrong output section (%s)"),
7766 bfd_set_error (bfd_error_bad_value
);
7771 if (r_type
== R_PPC_EMB_SDA21
)
7772 { /* fill in register field */
7773 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7774 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
7775 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7780 /* Relocate against the beginning of the section. */
7782 case R_PPC_SECTOFF_LO
:
7783 case R_PPC_SECTOFF_HI
:
7784 case R_PPC_SECTOFF_HA
:
7785 if (sec
== NULL
|| sec
->output_section
== NULL
)
7787 unresolved_reloc
= TRUE
;
7790 addend
-= sec
->output_section
->vma
;
7793 /* Negative relocations. */
7794 case R_PPC_EMB_NADDR32
:
7795 case R_PPC_EMB_NADDR16
:
7796 case R_PPC_EMB_NADDR16_LO
:
7797 case R_PPC_EMB_NADDR16_HI
:
7798 case R_PPC_EMB_NADDR16_HA
:
7799 addend
-= 2 * relocation
;
7803 case R_PPC_GLOB_DAT
:
7804 case R_PPC_JMP_SLOT
:
7805 case R_PPC_RELATIVE
:
7806 case R_PPC_IRELATIVE
:
7808 case R_PPC_PLTREL32
:
7809 case R_PPC_PLT16_LO
:
7810 case R_PPC_PLT16_HI
:
7811 case R_PPC_PLT16_HA
:
7813 case R_PPC_EMB_RELSEC16
:
7814 case R_PPC_EMB_RELST_LO
:
7815 case R_PPC_EMB_RELST_HI
:
7816 case R_PPC_EMB_RELST_HA
:
7817 case R_PPC_EMB_BIT_FLD
:
7818 (*_bfd_error_handler
)
7819 (_("%B: relocation %s is not yet supported for symbol %s."),
7824 bfd_set_error (bfd_error_invalid_operation
);
7829 /* Do any further special processing. */
7835 case R_PPC_ADDR16_HA
:
7836 case R_PPC_REL16_HA
:
7837 case R_PPC_SECTOFF_HA
:
7838 case R_PPC_TPREL16_HA
:
7839 case R_PPC_DTPREL16_HA
:
7840 case R_PPC_EMB_NADDR16_HA
:
7841 case R_PPC_EMB_RELST_HA
:
7842 /* It's just possible that this symbol is a weak symbol
7843 that's not actually defined anywhere. In that case,
7844 'sec' would be NULL, and we should leave the symbol
7845 alone (it will be set to zero elsewhere in the link). */
7850 case R_PPC_PLT16_HA
:
7851 case R_PPC_GOT16_HA
:
7852 case R_PPC_GOT_TLSGD16_HA
:
7853 case R_PPC_GOT_TLSLD16_HA
:
7854 case R_PPC_GOT_TPREL16_HA
:
7855 case R_PPC_GOT_DTPREL16_HA
:
7856 /* Add 0x10000 if sign bit in 0:15 is set.
7857 Bits 0:15 are not used. */
7863 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7864 "offset = %ld, addend = %ld\n",
7869 (long) rel
->r_offset
,
7873 if (unresolved_reloc
7874 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
7877 (*_bfd_error_handler
)
7878 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7881 (long) rel
->r_offset
,
7887 r
= _bfd_final_link_relocate (howto
,
7895 if (r
!= bfd_reloc_ok
)
7897 if (r
== bfd_reloc_overflow
)
7902 && h
->root
.type
== bfd_link_hash_undefweak
7903 && howto
->pc_relative
)
7905 /* Assume this is a call protected by other code that
7906 detect the symbol is undefined. If this is the case,
7907 we can safely ignore the overflow. If not, the
7908 program is hosed anyway, and a little warning isn't
7914 if (! (*info
->callbacks
->reloc_overflow
) (info
,
7915 (h
? &h
->root
: NULL
),
7926 (*_bfd_error_handler
)
7927 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7928 input_bfd
, input_section
,
7929 (long) rel
->r_offset
, howto
->name
, sym_name
, (int) r
);
7936 fprintf (stderr
, "\n");
7942 /* Finish up dynamic symbol handling. We set the contents of various
7943 dynamic sections here. */
7946 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
7947 struct bfd_link_info
*info
,
7948 struct elf_link_hash_entry
*h
,
7949 Elf_Internal_Sym
*sym
)
7951 struct ppc_elf_link_hash_table
*htab
;
7952 struct plt_entry
*ent
;
7953 bfd_boolean doneone
;
7956 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
7957 h
->root
.root
.string
);
7960 htab
= ppc_elf_hash_table (info
);
7961 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
7964 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7965 if (ent
->plt
.offset
!= (bfd_vma
) -1)
7969 Elf_Internal_Rela rela
;
7971 bfd_vma reloc_index
;
7973 if (htab
->plt_type
== PLT_NEW
7974 || !htab
->elf
.dynamic_sections_created
7975 || h
->dynindx
== -1)
7976 reloc_index
= ent
->plt
.offset
/ 4;
7979 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
7980 / htab
->plt_slot_size
);
7981 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
7982 && htab
->plt_type
== PLT_OLD
)
7983 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
7986 /* This symbol has an entry in the procedure linkage table.
7988 if (htab
->plt_type
== PLT_VXWORKS
7989 && htab
->elf
.dynamic_sections_created
7990 && h
->dynindx
!= -1)
7993 const bfd_vma
*plt_entry
;
7995 /* The first three entries in .got.plt are reserved. */
7996 got_offset
= (reloc_index
+ 3) * 4;
7998 /* Use the right PLT. */
7999 plt_entry
= info
->shared
? ppc_elf_vxworks_pic_plt_entry
8000 : ppc_elf_vxworks_plt_entry
;
8002 /* Fill in the .plt on VxWorks. */
8005 bfd_put_32 (output_bfd
,
8006 plt_entry
[0] | PPC_HA (got_offset
),
8007 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
8008 bfd_put_32 (output_bfd
,
8009 plt_entry
[1] | PPC_LO (got_offset
),
8010 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
8014 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
8016 bfd_put_32 (output_bfd
,
8017 plt_entry
[0] | PPC_HA (got_loc
),
8018 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
8019 bfd_put_32 (output_bfd
,
8020 plt_entry
[1] | PPC_LO (got_loc
),
8021 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
8024 bfd_put_32 (output_bfd
, plt_entry
[2],
8025 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
8026 bfd_put_32 (output_bfd
, plt_entry
[3],
8027 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
8029 /* This instruction is an immediate load. The value loaded is
8030 the byte offset of the R_PPC_JMP_SLOT relocation from the
8031 start of the .rela.plt section. The value is stored in the
8032 low-order 16 bits of the load instruction. */
8033 /* NOTE: It appears that this is now an index rather than a
8034 prescaled offset. */
8035 bfd_put_32 (output_bfd
,
8036 plt_entry
[4] | reloc_index
,
8037 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
8038 /* This instruction is a PC-relative branch whose target is
8039 the start of the PLT section. The address of this branch
8040 instruction is 20 bytes beyond the start of this PLT entry.
8041 The address is encoded in bits 6-29, inclusive. The value
8042 stored is right-shifted by two bits, permitting a 26-bit
8044 bfd_put_32 (output_bfd
,
8046 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
8047 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
8048 bfd_put_32 (output_bfd
, plt_entry
[6],
8049 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
8050 bfd_put_32 (output_bfd
, plt_entry
[7],
8051 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
8053 /* Fill in the GOT entry corresponding to this PLT slot with
8054 the address immediately after the the "bctr" instruction
8055 in this PLT entry. */
8056 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
8057 + htab
->plt
->output_offset
8058 + ent
->plt
.offset
+ 16),
8059 htab
->sgotplt
->contents
+ got_offset
);
8063 /* Fill in a couple of entries in .rela.plt.unloaded. */
8064 loc
= htab
->srelplt2
->contents
8065 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
8066 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
8067 * sizeof (Elf32_External_Rela
));
8069 /* Provide the @ha relocation for the first instruction. */
8070 rela
.r_offset
= (htab
->plt
->output_section
->vma
8071 + htab
->plt
->output_offset
8072 + ent
->plt
.offset
+ 2);
8073 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
8075 rela
.r_addend
= got_offset
;
8076 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8077 loc
+= sizeof (Elf32_External_Rela
);
8079 /* Provide the @l relocation for the second instruction. */
8080 rela
.r_offset
= (htab
->plt
->output_section
->vma
8081 + htab
->plt
->output_offset
8082 + ent
->plt
.offset
+ 6);
8083 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
8085 rela
.r_addend
= got_offset
;
8086 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8087 loc
+= sizeof (Elf32_External_Rela
);
8089 /* Provide a relocation for the GOT entry corresponding to this
8090 PLT slot. Point it at the middle of the .plt entry. */
8091 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
8092 + htab
->sgotplt
->output_offset
8094 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
8096 rela
.r_addend
= ent
->plt
.offset
+ 16;
8097 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8100 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8101 In particular, the offset for the relocation is not the
8102 address of the PLT entry for this function, as specified
8103 by the ABI. Instead, the offset is set to the address of
8104 the GOT slot for this function. See EABI 4.4.4.1. */
8105 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
8106 + htab
->sgotplt
->output_offset
8112 asection
*splt
= htab
->plt
;
8113 if (!htab
->elf
.dynamic_sections_created
8114 || h
->dynindx
== -1)
8117 rela
.r_offset
= (splt
->output_section
->vma
8118 + splt
->output_offset
8120 if (htab
->plt_type
== PLT_OLD
8121 || !htab
->elf
.dynamic_sections_created
8122 || h
->dynindx
== -1)
8124 /* We don't need to fill in the .plt. The ppc dynamic
8125 linker will fill it in. */
8129 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
8130 + htab
->glink
->output_section
->vma
8131 + htab
->glink
->output_offset
);
8132 bfd_put_32 (output_bfd
, val
,
8133 splt
->contents
+ ent
->plt
.offset
);
8137 /* Fill in the entry in the .rela.plt section. */
8139 if (!htab
->elf
.dynamic_sections_created
8140 || h
->dynindx
== -1)
8142 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
8144 && (h
->root
.type
== bfd_link_hash_defined
8145 || h
->root
.type
== bfd_link_hash_defweak
));
8146 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8147 rela
.r_addend
= SYM_VAL (h
);
8150 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
8152 if (!htab
->elf
.dynamic_sections_created
8153 || h
->dynindx
== -1)
8154 loc
= (htab
->reliplt
->contents
8155 + (htab
->reliplt
->reloc_count
++
8156 * sizeof (Elf32_External_Rela
)));
8158 loc
= (htab
->relplt
->contents
8159 + reloc_index
* sizeof (Elf32_External_Rela
));
8160 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8162 if (!h
->def_regular
)
8164 /* Mark the symbol as undefined, rather than as
8165 defined in the .plt section. Leave the value if
8166 there were any relocations where pointer equality
8167 matters (this is a clue for the dynamic linker, to
8168 make function pointer comparisons work between an
8169 application and shared library), otherwise set it
8171 sym
->st_shndx
= SHN_UNDEF
;
8172 if (!h
->pointer_equality_needed
)
8174 else if (!h
->ref_regular_nonweak
)
8176 /* This breaks function pointer comparisons, but
8177 that is better than breaking tests for a NULL
8178 function pointer. */
8182 else if (h
->type
== STT_GNU_IFUNC
8185 /* Set the value of ifunc symbols in a non-pie
8186 executable to the glink entry. This is to avoid
8187 text relocations. We can't do this for ifunc in
8188 allocate_dynrelocs, as we do for normal dynamic
8189 function symbols with plt entries, because we need
8190 to keep the original value around for the ifunc
8192 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
8193 (output_bfd
, htab
->glink
->output_section
));
8194 sym
->st_value
= (ent
->glink_offset
+
8195 htab
->glink
->output_offset
8196 + htab
->glink
->output_section
->vma
);
8201 if (htab
->plt_type
== PLT_NEW
8202 || !htab
->elf
.dynamic_sections_created
8203 || h
->dynindx
== -1)
8205 asection
*splt
= htab
->plt
;
8206 if (!htab
->elf
.dynamic_sections_created
8207 || h
->dynindx
== -1)
8210 write_glink_stub (ent
, splt
, info
);
8212 if (!info
->shared
&& !info
->pie
)
8213 /* We only need one non-PIC glink stub. */
8223 Elf_Internal_Rela rela
;
8226 /* This symbols needs a copy reloc. Set it up. */
8229 fprintf (stderr
, ", copy");
8232 BFD_ASSERT (h
->dynindx
!= -1);
8234 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
8238 BFD_ASSERT (s
!= NULL
);
8240 rela
.r_offset
= SYM_VAL (h
);
8241 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
8243 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8244 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8248 fprintf (stderr
, "\n");
8251 /* Mark some specially defined symbols as absolute. */
8252 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
8253 || (!htab
->is_vxworks
8254 && (h
== htab
->elf
.hgot
8255 || strcmp (h
->root
.root
.string
,
8256 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8257 sym
->st_shndx
= SHN_ABS
;
8262 static enum elf_reloc_type_class
8263 ppc_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
8265 switch (ELF32_R_TYPE (rela
->r_info
))
8267 case R_PPC_RELATIVE
:
8268 return reloc_class_relative
;
8271 case R_PPC_JMP_SLOT
:
8272 return reloc_class_plt
;
8274 return reloc_class_copy
;
8276 return reloc_class_normal
;
8280 /* Finish up the dynamic sections. */
8283 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
8284 struct bfd_link_info
*info
)
8288 struct ppc_elf_link_hash_table
*htab
;
8291 bfd_boolean ret
= TRUE
;
8294 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
8297 htab
= ppc_elf_hash_table (info
);
8298 dynobj
= elf_hash_table (info
)->dynobj
;
8299 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
8300 if (htab
->is_vxworks
)
8301 splt
= bfd_get_section_by_name (dynobj
, ".plt");
8306 if (htab
->elf
.hgot
!= NULL
)
8307 got
= SYM_VAL (htab
->elf
.hgot
);
8309 if (htab
->elf
.dynamic_sections_created
)
8311 Elf32_External_Dyn
*dyncon
, *dynconend
;
8313 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
8315 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
8316 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
8317 for (; dyncon
< dynconend
; dyncon
++)
8319 Elf_Internal_Dyn dyn
;
8322 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
8327 if (htab
->is_vxworks
)
8331 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
8335 dyn
.d_un
.d_val
= htab
->relplt
->size
;
8340 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
8344 dyn
.d_un
.d_ptr
= got
;
8348 if (htab
->is_vxworks
)
8351 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
8357 if (htab
->is_vxworks
8358 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
8363 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8367 if (htab
->got
!= NULL
)
8369 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->got
8370 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->sgotplt
)
8372 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
8374 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
8375 if (htab
->plt_type
== PLT_OLD
)
8377 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8378 so that a function can easily find the address of
8379 _GLOBAL_OFFSET_TABLE_. */
8380 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
8381 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
8382 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
8387 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
8388 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
8389 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
8390 bfd_put_32 (output_bfd
, val
, p
);
8395 (*_bfd_error_handler
) (_("%s not defined in linker created %s"),
8396 htab
->elf
.hgot
->root
.root
.string
,
8397 (htab
->sgotplt
!= NULL
8398 ? htab
->sgotplt
->name
: htab
->got
->name
));
8399 bfd_set_error (bfd_error_bad_value
);
8403 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
8406 /* Fill in the first entry in the VxWorks procedure linkage table. */
8407 if (splt
&& splt
->size
> 0)
8409 /* Use the right PLT. */
8410 static const bfd_vma
*plt_entry
= NULL
;
8411 plt_entry
= info
->shared
?
8412 ppc_elf_vxworks_pic_plt0_entry
: ppc_elf_vxworks_plt0_entry
;
8416 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
8418 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
8419 splt
->contents
+ 0);
8420 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
8421 splt
->contents
+ 4);
8425 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
8426 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
8428 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
8429 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
8430 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
8431 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
8432 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
8433 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
8437 Elf_Internal_Rela rela
;
8440 loc
= htab
->srelplt2
->contents
;
8442 /* Output the @ha relocation for the first instruction. */
8443 rela
.r_offset
= (htab
->plt
->output_section
->vma
8444 + htab
->plt
->output_offset
8446 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
8448 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8449 loc
+= sizeof (Elf32_External_Rela
);
8451 /* Output the @l relocation for the second instruction. */
8452 rela
.r_offset
= (htab
->plt
->output_section
->vma
8453 + htab
->plt
->output_offset
8455 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
8457 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8458 loc
+= sizeof (Elf32_External_Rela
);
8460 /* Fix up the remaining relocations. They may have the wrong
8461 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8462 in which symbols were output. */
8463 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
8465 Elf_Internal_Rela rel
;
8467 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
8468 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
8469 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
8470 loc
+= sizeof (Elf32_External_Rela
);
8472 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
8473 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
8474 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
8475 loc
+= sizeof (Elf32_External_Rela
);
8477 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
8478 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
8479 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
8480 loc
+= sizeof (Elf32_External_Rela
);
8485 if (htab
->glink
!= NULL
8486 && htab
->glink
->contents
!= NULL
8487 && htab
->elf
.dynamic_sections_created
)
8490 unsigned char *endp
;
8495 * PIC glink code is the following:
8497 * # ith PLT code stub.
8498 * addis 11,30,(plt+(i-1)*4-got)@ha
8499 * lwz 11,(plt+(i-1)*4-got)@l(11)
8503 * # A table of branches, one for each plt entry.
8504 * # The idea is that the plt call stub loads ctr and r11 with these
8505 * # addresses, so (r11 - res_0) gives the plt index * 4.
8506 * res_0: b PLTresolve
8507 * res_1: b PLTresolve
8509 * # Some number of entries towards the end can be nops
8515 * addis 11,11,(1f-res_0)@ha
8518 * 1: addi 11,11,(1b-res_0)@l
8521 * sub 11,11,12 # r11 = index * 4
8522 * addis 12,12,(got+4-1b)@ha
8523 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8524 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8527 * add 11,0,11 # r11 = index * 12 = reloc offset.
8530 static const unsigned int pic_plt_resolve
[] =
8551 * Non-PIC glink code is a little simpler.
8553 * # ith PLT code stub.
8554 * lis 11,(plt+(i-1)*4)@ha
8555 * lwz 11,(plt+(i-1)*4)@l(11)
8559 * The branch table is the same, then comes
8563 * addis 11,11,(-res_0)@ha
8564 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8565 * addi 11,11,(-res_0)@l # r11 = index * 4
8568 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8569 * add 11,0,11 # r11 = index * 12 = reloc offset.
8572 static const unsigned int plt_resolve
[] =
8592 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
8594 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
8597 /* Build the branch table, one for each plt entry (less one),
8598 and perhaps some padding. */
8599 p
= htab
->glink
->contents
;
8600 p
+= htab
->glink_pltresolve
;
8601 endp
= htab
->glink
->contents
;
8602 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
8603 while (p
< endp
- 8 * 4)
8605 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
8610 bfd_put_32 (output_bfd
, NOP
, p
);
8614 res0
= (htab
->glink_pltresolve
8615 + htab
->glink
->output_section
->vma
8616 + htab
->glink
->output_offset
);
8618 /* Last comes the PLTresolve stub. */
8619 if (info
->shared
|| info
->pie
)
8623 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
8625 bfd_put_32 (output_bfd
, pic_plt_resolve
[i
], p
);
8628 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
8630 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
8631 + htab
->glink
->output_section
->vma
8632 + htab
->glink
->output_offset
);
8634 bfd_put_32 (output_bfd
,
8635 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
8636 bfd_put_32 (output_bfd
,
8637 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
8638 bfd_put_32 (output_bfd
,
8639 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
8640 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
8642 bfd_put_32 (output_bfd
,
8643 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
8644 bfd_put_32 (output_bfd
,
8645 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
8649 bfd_put_32 (output_bfd
,
8650 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
8651 bfd_put_32 (output_bfd
,
8652 LWZ_12_12
+ 4, p
+ 9*4);
8657 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
8659 bfd_put_32 (output_bfd
, plt_resolve
[i
], p
);
8662 p
-= 4 * ARRAY_SIZE (plt_resolve
);
8664 bfd_put_32 (output_bfd
,
8665 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
8666 bfd_put_32 (output_bfd
,
8667 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
8668 bfd_put_32 (output_bfd
,
8669 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
8670 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
8672 bfd_put_32 (output_bfd
,
8673 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
8674 bfd_put_32 (output_bfd
,
8675 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
8679 bfd_put_32 (output_bfd
,
8680 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
8681 bfd_put_32 (output_bfd
,
8682 LWZ_12_12
+ 4, p
+ 6*4);
8690 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8691 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8692 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8693 #define TARGET_BIG_NAME "elf32-powerpc"
8694 #define ELF_ARCH bfd_arch_powerpc
8695 #define ELF_MACHINE_CODE EM_PPC
8696 #ifdef __QNXTARGET__
8697 #define ELF_MAXPAGESIZE 0x1000
8699 #define ELF_MAXPAGESIZE 0x10000
8701 #define ELF_MINPAGESIZE 0x1000
8702 #define ELF_COMMONPAGESIZE 0x1000
8703 #define elf_info_to_howto ppc_elf_info_to_howto
8705 #ifdef EM_CYGNUS_POWERPC
8706 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8710 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8713 #define elf_backend_plt_not_loaded 1
8714 #define elf_backend_can_gc_sections 1
8715 #define elf_backend_can_refcount 1
8716 #define elf_backend_rela_normal 1
8718 #define bfd_elf32_mkobject ppc_elf_mkobject
8719 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8720 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8721 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8722 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8723 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8724 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8725 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8727 #define elf_backend_object_p ppc_elf_object_p
8728 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8729 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8730 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8731 #define elf_backend_relocate_section ppc_elf_relocate_section
8732 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8733 #define elf_backend_check_relocs ppc_elf_check_relocs
8734 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8735 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8736 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8737 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8738 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8739 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8740 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8741 #define elf_backend_fake_sections ppc_elf_fake_sections
8742 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8743 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8744 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8745 #define elf_backend_write_core_note ppc_elf_write_core_note
8746 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8747 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8748 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8749 #define elf_backend_write_section ppc_elf_write_section
8750 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8751 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8752 #define elf_backend_action_discarded ppc_elf_action_discarded
8753 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8754 #define elf_backend_post_process_headers _bfd_elf_set_osabi
8756 #include "elf32-target.h"
8758 /* VxWorks Target */
8760 #undef TARGET_LITTLE_SYM
8761 #undef TARGET_LITTLE_NAME
8763 #undef TARGET_BIG_SYM
8764 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8765 #undef TARGET_BIG_NAME
8766 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8768 /* VxWorks uses the elf default section flags for .plt. */
8769 static const struct bfd_elf_special_section
*
8770 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
8772 if (sec
->name
== NULL
)
8775 if (strcmp (sec
->name
, ".plt") == 0)
8776 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
8778 return ppc_elf_get_sec_type_attr (abfd
, sec
);
8781 /* Like ppc_elf_link_hash_table_create, but overrides
8782 appropriately for VxWorks. */
8783 static struct bfd_link_hash_table
*
8784 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
8786 struct bfd_link_hash_table
*ret
;
8788 ret
= ppc_elf_link_hash_table_create (abfd
);
8791 struct ppc_elf_link_hash_table
*htab
8792 = (struct ppc_elf_link_hash_table
*)ret
;
8793 htab
->is_vxworks
= 1;
8794 htab
->plt_type
= PLT_VXWORKS
;
8795 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
8796 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
8797 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
8802 /* Tweak magic VxWorks symbols as they are loaded. */
8804 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
8805 struct bfd_link_info
*info
,
8806 Elf_Internal_Sym
*sym
,
8807 const char **namep ATTRIBUTE_UNUSED
,
8808 flagword
*flagsp ATTRIBUTE_UNUSED
,
8812 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
8816 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
8820 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
8822 ppc_elf_final_write_processing(abfd
, linker
);
8823 elf_vxworks_final_write_processing(abfd
, linker
);
8826 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8828 #undef elf_backend_want_plt_sym
8829 #define elf_backend_want_plt_sym 1
8830 #undef elf_backend_want_got_plt
8831 #define elf_backend_want_got_plt 1
8832 #undef elf_backend_got_symbol_offset
8833 #define elf_backend_got_symbol_offset 0
8834 #undef elf_backend_plt_not_loaded
8835 #define elf_backend_plt_not_loaded 0
8836 #undef elf_backend_plt_readonly
8837 #define elf_backend_plt_readonly 1
8838 #undef elf_backend_got_header_size
8839 #define elf_backend_got_header_size 12
8841 #undef bfd_elf32_get_synthetic_symtab
8843 #undef bfd_elf32_bfd_link_hash_table_create
8844 #define bfd_elf32_bfd_link_hash_table_create \
8845 ppc_elf_vxworks_link_hash_table_create
8846 #undef elf_backend_add_symbol_hook
8847 #define elf_backend_add_symbol_hook \
8848 ppc_elf_vxworks_add_symbol_hook
8849 #undef elf_backend_link_output_symbol_hook
8850 #define elf_backend_link_output_symbol_hook \
8851 elf_vxworks_link_output_symbol_hook
8852 #undef elf_backend_final_write_processing
8853 #define elf_backend_final_write_processing \
8854 ppc_elf_vxworks_final_write_processing
8855 #undef elf_backend_get_sec_type_attr
8856 #define elf_backend_get_sec_type_attr \
8857 ppc_elf_vxworks_get_sec_type_attr
8858 #undef elf_backend_emit_relocs
8859 #define elf_backend_emit_relocs \
8860 elf_vxworks_emit_relocs
8863 #define elf32_bed ppc_elf_vxworks_bed
8864 #undef elf_backend_post_process_headers
8866 #include "elf32-target.h"