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 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 reloc 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 */
771 /* Computes the load module index of the load module that contains the
772 definition of its TLS sym. */
773 HOWTO (R_PPC_DTPMOD32
,
775 2, /* size (0 = byte, 1 = short, 2 = long) */
777 FALSE
, /* pc_relative */
779 complain_overflow_dont
, /* complain_on_overflow */
780 ppc_elf_unhandled_reloc
, /* special_function */
781 "R_PPC_DTPMOD32", /* name */
782 FALSE
, /* partial_inplace */
784 0xffffffff, /* dst_mask */
785 FALSE
), /* pcrel_offset */
787 /* Computes a dtv-relative displacement, the difference between the value
788 of sym+add and the base address of the thread-local storage block that
789 contains the definition of sym, minus 0x8000. */
790 HOWTO (R_PPC_DTPREL32
,
792 2, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE
, /* pc_relative */
796 complain_overflow_dont
, /* complain_on_overflow */
797 ppc_elf_unhandled_reloc
, /* special_function */
798 "R_PPC_DTPREL32", /* name */
799 FALSE
, /* partial_inplace */
801 0xffffffff, /* dst_mask */
802 FALSE
), /* pcrel_offset */
804 /* A 16 bit dtprel reloc. */
805 HOWTO (R_PPC_DTPREL16
,
807 1, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE
, /* pc_relative */
811 complain_overflow_signed
, /* complain_on_overflow */
812 ppc_elf_unhandled_reloc
, /* special_function */
813 "R_PPC_DTPREL16", /* name */
814 FALSE
, /* partial_inplace */
816 0xffff, /* dst_mask */
817 FALSE
), /* pcrel_offset */
819 /* Like DTPREL16, but no overflow. */
820 HOWTO (R_PPC_DTPREL16_LO
,
822 1, /* size (0 = byte, 1 = short, 2 = long) */
824 FALSE
, /* pc_relative */
826 complain_overflow_dont
, /* complain_on_overflow */
827 ppc_elf_unhandled_reloc
, /* special_function */
828 "R_PPC_DTPREL16_LO", /* name */
829 FALSE
, /* partial_inplace */
831 0xffff, /* dst_mask */
832 FALSE
), /* pcrel_offset */
834 /* Like DTPREL16_LO, but next higher group of 16 bits. */
835 HOWTO (R_PPC_DTPREL16_HI
,
837 1, /* size (0 = byte, 1 = short, 2 = long) */
839 FALSE
, /* pc_relative */
841 complain_overflow_dont
, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc
, /* special_function */
843 "R_PPC_DTPREL16_HI", /* name */
844 FALSE
, /* partial_inplace */
846 0xffff, /* dst_mask */
847 FALSE
), /* pcrel_offset */
849 /* Like DTPREL16_HI, but adjust for low 16 bits. */
850 HOWTO (R_PPC_DTPREL16_HA
,
852 1, /* size (0 = byte, 1 = short, 2 = long) */
854 FALSE
, /* pc_relative */
856 complain_overflow_dont
, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc
, /* special_function */
858 "R_PPC_DTPREL16_HA", /* name */
859 FALSE
, /* partial_inplace */
861 0xffff, /* dst_mask */
862 FALSE
), /* pcrel_offset */
864 /* Computes a tp-relative displacement, the difference between the value of
865 sym+add and the value of the thread pointer (r13). */
866 HOWTO (R_PPC_TPREL32
,
868 2, /* size (0 = byte, 1 = short, 2 = long) */
870 FALSE
, /* pc_relative */
872 complain_overflow_dont
, /* complain_on_overflow */
873 ppc_elf_unhandled_reloc
, /* special_function */
874 "R_PPC_TPREL32", /* name */
875 FALSE
, /* partial_inplace */
877 0xffffffff, /* dst_mask */
878 FALSE
), /* pcrel_offset */
880 /* A 16 bit tprel reloc. */
881 HOWTO (R_PPC_TPREL16
,
883 1, /* size (0 = byte, 1 = short, 2 = long) */
885 FALSE
, /* pc_relative */
887 complain_overflow_signed
, /* complain_on_overflow */
888 ppc_elf_unhandled_reloc
, /* special_function */
889 "R_PPC_TPREL16", /* name */
890 FALSE
, /* partial_inplace */
892 0xffff, /* dst_mask */
893 FALSE
), /* pcrel_offset */
895 /* Like TPREL16, but no overflow. */
896 HOWTO (R_PPC_TPREL16_LO
,
898 1, /* size (0 = byte, 1 = short, 2 = long) */
900 FALSE
, /* pc_relative */
902 complain_overflow_dont
, /* complain_on_overflow */
903 ppc_elf_unhandled_reloc
, /* special_function */
904 "R_PPC_TPREL16_LO", /* name */
905 FALSE
, /* partial_inplace */
907 0xffff, /* dst_mask */
908 FALSE
), /* pcrel_offset */
910 /* Like TPREL16_LO, but next higher group of 16 bits. */
911 HOWTO (R_PPC_TPREL16_HI
,
913 1, /* size (0 = byte, 1 = short, 2 = long) */
915 FALSE
, /* pc_relative */
917 complain_overflow_dont
, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc
, /* special_function */
919 "R_PPC_TPREL16_HI", /* name */
920 FALSE
, /* partial_inplace */
922 0xffff, /* dst_mask */
923 FALSE
), /* pcrel_offset */
925 /* Like TPREL16_HI, but adjust for low 16 bits. */
926 HOWTO (R_PPC_TPREL16_HA
,
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE
, /* pc_relative */
932 complain_overflow_dont
, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc
, /* special_function */
934 "R_PPC_TPREL16_HA", /* name */
935 FALSE
, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE
), /* pcrel_offset */
940 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
941 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
942 to the first entry. */
943 HOWTO (R_PPC_GOT_TLSGD16
,
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE
, /* pc_relative */
949 complain_overflow_signed
, /* complain_on_overflow */
950 ppc_elf_unhandled_reloc
, /* special_function */
951 "R_PPC_GOT_TLSGD16", /* name */
952 FALSE
, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE
), /* pcrel_offset */
957 /* Like GOT_TLSGD16, but no overflow. */
958 HOWTO (R_PPC_GOT_TLSGD16_LO
,
960 1, /* size (0 = byte, 1 = short, 2 = long) */
962 FALSE
, /* pc_relative */
964 complain_overflow_dont
, /* complain_on_overflow */
965 ppc_elf_unhandled_reloc
, /* special_function */
966 "R_PPC_GOT_TLSGD16_LO", /* name */
967 FALSE
, /* partial_inplace */
969 0xffff, /* dst_mask */
970 FALSE
), /* pcrel_offset */
972 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
973 HOWTO (R_PPC_GOT_TLSGD16_HI
,
975 1, /* size (0 = byte, 1 = short, 2 = long) */
977 FALSE
, /* pc_relative */
979 complain_overflow_dont
, /* complain_on_overflow */
980 ppc_elf_unhandled_reloc
, /* special_function */
981 "R_PPC_GOT_TLSGD16_HI", /* name */
982 FALSE
, /* partial_inplace */
984 0xffff, /* dst_mask */
985 FALSE
), /* pcrel_offset */
987 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
988 HOWTO (R_PPC_GOT_TLSGD16_HA
,
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE
, /* pc_relative */
994 complain_overflow_dont
, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc
, /* special_function */
996 "R_PPC_GOT_TLSGD16_HA", /* name */
997 FALSE
, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE
), /* pcrel_offset */
1002 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1003 with values (sym+add)@dtpmod and zero, and computes the offset to the
1005 HOWTO (R_PPC_GOT_TLSLD16
,
1007 1, /* size (0 = byte, 1 = short, 2 = long) */
1009 FALSE
, /* pc_relative */
1011 complain_overflow_signed
, /* complain_on_overflow */
1012 ppc_elf_unhandled_reloc
, /* special_function */
1013 "R_PPC_GOT_TLSLD16", /* name */
1014 FALSE
, /* partial_inplace */
1016 0xffff, /* dst_mask */
1017 FALSE
), /* pcrel_offset */
1019 /* Like GOT_TLSLD16, but no overflow. */
1020 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1022 1, /* size (0 = byte, 1 = short, 2 = long) */
1024 FALSE
, /* pc_relative */
1026 complain_overflow_dont
, /* complain_on_overflow */
1027 ppc_elf_unhandled_reloc
, /* special_function */
1028 "R_PPC_GOT_TLSLD16_LO", /* name */
1029 FALSE
, /* partial_inplace */
1031 0xffff, /* dst_mask */
1032 FALSE
), /* pcrel_offset */
1034 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1035 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1036 16, /* rightshift */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE
, /* pc_relative */
1041 complain_overflow_dont
, /* complain_on_overflow */
1042 ppc_elf_unhandled_reloc
, /* special_function */
1043 "R_PPC_GOT_TLSLD16_HI", /* name */
1044 FALSE
, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE
), /* pcrel_offset */
1049 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1050 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1051 16, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE
, /* pc_relative */
1056 complain_overflow_dont
, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc
, /* special_function */
1058 "R_PPC_GOT_TLSLD16_HA", /* name */
1059 FALSE
, /* partial_inplace */
1061 0xffff, /* dst_mask */
1062 FALSE
), /* pcrel_offset */
1064 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1065 the offset to the entry. */
1066 HOWTO (R_PPC_GOT_DTPREL16
,
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1070 FALSE
, /* pc_relative */
1072 complain_overflow_signed
, /* complain_on_overflow */
1073 ppc_elf_unhandled_reloc
, /* special_function */
1074 "R_PPC_GOT_DTPREL16", /* name */
1075 FALSE
, /* partial_inplace */
1077 0xffff, /* dst_mask */
1078 FALSE
), /* pcrel_offset */
1080 /* Like GOT_DTPREL16, but no overflow. */
1081 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1083 1, /* size (0 = byte, 1 = short, 2 = long) */
1085 FALSE
, /* pc_relative */
1087 complain_overflow_dont
, /* complain_on_overflow */
1088 ppc_elf_unhandled_reloc
, /* special_function */
1089 "R_PPC_GOT_DTPREL16_LO", /* name */
1090 FALSE
, /* partial_inplace */
1092 0xffff, /* dst_mask */
1093 FALSE
), /* pcrel_offset */
1095 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1096 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1097 16, /* rightshift */
1098 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 FALSE
, /* pc_relative */
1102 complain_overflow_dont
, /* complain_on_overflow */
1103 ppc_elf_unhandled_reloc
, /* special_function */
1104 "R_PPC_GOT_DTPREL16_HI", /* name */
1105 FALSE
, /* partial_inplace */
1107 0xffff, /* dst_mask */
1108 FALSE
), /* pcrel_offset */
1110 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1111 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1112 16, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE
, /* pc_relative */
1117 complain_overflow_dont
, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc
, /* special_function */
1119 "R_PPC_GOT_DTPREL16_HA", /* name */
1120 FALSE
, /* partial_inplace */
1122 0xffff, /* dst_mask */
1123 FALSE
), /* pcrel_offset */
1125 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1126 offset to the entry. */
1127 HOWTO (R_PPC_GOT_TPREL16
,
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE
, /* pc_relative */
1133 complain_overflow_signed
, /* complain_on_overflow */
1134 ppc_elf_unhandled_reloc
, /* special_function */
1135 "R_PPC_GOT_TPREL16", /* name */
1136 FALSE
, /* partial_inplace */
1138 0xffff, /* dst_mask */
1139 FALSE
), /* pcrel_offset */
1141 /* Like GOT_TPREL16, but no overflow. */
1142 HOWTO (R_PPC_GOT_TPREL16_LO
,
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE
, /* pc_relative */
1148 complain_overflow_dont
, /* complain_on_overflow */
1149 ppc_elf_unhandled_reloc
, /* special_function */
1150 "R_PPC_GOT_TPREL16_LO", /* name */
1151 FALSE
, /* partial_inplace */
1153 0xffff, /* dst_mask */
1154 FALSE
), /* pcrel_offset */
1156 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1157 HOWTO (R_PPC_GOT_TPREL16_HI
,
1158 16, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE
, /* pc_relative */
1163 complain_overflow_dont
, /* complain_on_overflow */
1164 ppc_elf_unhandled_reloc
, /* special_function */
1165 "R_PPC_GOT_TPREL16_HI", /* name */
1166 FALSE
, /* partial_inplace */
1168 0xffff, /* dst_mask */
1169 FALSE
), /* pcrel_offset */
1171 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1172 HOWTO (R_PPC_GOT_TPREL16_HA
,
1173 16, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE
, /* pc_relative */
1178 complain_overflow_dont
, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc
, /* special_function */
1180 "R_PPC_GOT_TPREL16_HA", /* name */
1181 FALSE
, /* partial_inplace */
1183 0xffff, /* dst_mask */
1184 FALSE
), /* pcrel_offset */
1186 /* The remaining relocs are from the Embedded ELF ABI, and are not
1187 in the SVR4 ELF ABI. */
1189 /* 32 bit value resulting from the addend minus the symbol. */
1190 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1192 2, /* size (0 = byte, 1 = short, 2 = long) */
1194 FALSE
, /* pc_relative */
1196 complain_overflow_bitfield
, /* complain_on_overflow */
1197 bfd_elf_generic_reloc
, /* special_function */
1198 "R_PPC_EMB_NADDR32", /* name */
1199 FALSE
, /* partial_inplace */
1201 0xffffffff, /* dst_mask */
1202 FALSE
), /* pcrel_offset */
1204 /* 16 bit value resulting from the addend minus the symbol. */
1205 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1207 1, /* size (0 = byte, 1 = short, 2 = long) */
1209 FALSE
, /* pc_relative */
1211 complain_overflow_bitfield
, /* complain_on_overflow */
1212 bfd_elf_generic_reloc
, /* special_function */
1213 "R_PPC_EMB_NADDR16", /* name */
1214 FALSE
, /* partial_inplace */
1216 0xffff, /* dst_mask */
1217 FALSE
), /* pcrel_offset */
1219 /* 16 bit value resulting from the addend minus the symbol. */
1220 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE
, /* pc_relative */
1226 complain_overflow_dont
,/* complain_on_overflow */
1227 bfd_elf_generic_reloc
, /* special_function */
1228 "R_PPC_EMB_ADDR16_LO", /* name */
1229 FALSE
, /* partial_inplace */
1231 0xffff, /* dst_mask */
1232 FALSE
), /* pcrel_offset */
1234 /* The high order 16 bits of the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1236 16, /* rightshift */
1237 1, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE
, /* pc_relative */
1241 complain_overflow_dont
, /* complain_on_overflow */
1242 bfd_elf_generic_reloc
, /* special_function */
1243 "R_PPC_EMB_NADDR16_HI", /* name */
1244 FALSE
, /* partial_inplace */
1246 0xffff, /* dst_mask */
1247 FALSE
), /* pcrel_offset */
1249 /* The high order 16 bits of the result of the addend minus the address,
1250 plus 1 if the contents of the low 16 bits, treated as a signed number,
1252 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1253 16, /* rightshift */
1254 1, /* size (0 = byte, 1 = short, 2 = long) */
1256 FALSE
, /* pc_relative */
1258 complain_overflow_dont
, /* complain_on_overflow */
1259 ppc_elf_addr16_ha_reloc
, /* special_function */
1260 "R_PPC_EMB_NADDR16_HA", /* name */
1261 FALSE
, /* partial_inplace */
1263 0xffff, /* dst_mask */
1264 FALSE
), /* pcrel_offset */
1266 /* 16 bit value resulting from allocating a 4 byte word to hold an
1267 address in the .sdata section, and returning the offset from
1268 _SDA_BASE_ for that relocation. */
1269 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1271 1, /* size (0 = byte, 1 = short, 2 = long) */
1273 FALSE
, /* pc_relative */
1275 complain_overflow_bitfield
, /* complain_on_overflow */
1276 bfd_elf_generic_reloc
, /* special_function */
1277 "R_PPC_EMB_SDAI16", /* name */
1278 FALSE
, /* partial_inplace */
1280 0xffff, /* dst_mask */
1281 FALSE
), /* pcrel_offset */
1283 /* 16 bit value resulting from allocating a 4 byte word to hold an
1284 address in the .sdata2 section, and returning the offset from
1285 _SDA2_BASE_ for that relocation. */
1286 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1288 1, /* size (0 = byte, 1 = short, 2 = long) */
1290 FALSE
, /* pc_relative */
1292 complain_overflow_bitfield
, /* complain_on_overflow */
1293 bfd_elf_generic_reloc
, /* special_function */
1294 "R_PPC_EMB_SDA2I16", /* name */
1295 FALSE
, /* partial_inplace */
1297 0xffff, /* dst_mask */
1298 FALSE
), /* pcrel_offset */
1300 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1301 small data items. */
1302 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 FALSE
, /* pc_relative */
1308 complain_overflow_signed
, /* complain_on_overflow */
1309 bfd_elf_generic_reloc
, /* special_function */
1310 "R_PPC_EMB_SDA2REL", /* name */
1311 FALSE
, /* partial_inplace */
1313 0xffff, /* dst_mask */
1314 FALSE
), /* pcrel_offset */
1316 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1317 signed offset from the appropriate base, and filling in the register
1318 field with the appropriate register (0, 2, or 13). */
1319 HOWTO (R_PPC_EMB_SDA21
, /* type */
1321 2, /* size (0 = byte, 1 = short, 2 = long) */
1323 FALSE
, /* pc_relative */
1325 complain_overflow_signed
, /* complain_on_overflow */
1326 bfd_elf_generic_reloc
, /* special_function */
1327 "R_PPC_EMB_SDA21", /* name */
1328 FALSE
, /* partial_inplace */
1330 0xffff, /* dst_mask */
1331 FALSE
), /* pcrel_offset */
1333 /* Relocation not handled: R_PPC_EMB_MRKREF */
1334 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1335 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1336 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1337 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1338 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1340 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1341 in the 16 bit signed offset from the appropriate base, and filling in the
1342 register field with the appropriate register (0, 2, or 13). */
1343 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1345 1, /* size (0 = byte, 1 = short, 2 = long) */
1347 TRUE
, /* pc_relative */
1349 complain_overflow_signed
, /* complain_on_overflow */
1350 bfd_elf_generic_reloc
, /* special_function */
1351 "R_PPC_EMB_RELSDA", /* name */
1352 FALSE
, /* partial_inplace */
1354 0xffff, /* dst_mask */
1355 FALSE
), /* pcrel_offset */
1357 /* A 16 bit relative relocation. */
1358 HOWTO (R_PPC_REL16
, /* type */
1360 1, /* size (0 = byte, 1 = short, 2 = long) */
1362 TRUE
, /* pc_relative */
1364 complain_overflow_bitfield
, /* complain_on_overflow */
1365 bfd_elf_generic_reloc
, /* special_function */
1366 "R_PPC_REL16", /* name */
1367 FALSE
, /* partial_inplace */
1369 0xffff, /* dst_mask */
1370 TRUE
), /* pcrel_offset */
1372 /* A 16 bit relative relocation without overflow. */
1373 HOWTO (R_PPC_REL16_LO
, /* type */
1375 1, /* size (0 = byte, 1 = short, 2 = long) */
1377 TRUE
, /* pc_relative */
1379 complain_overflow_dont
,/* complain_on_overflow */
1380 bfd_elf_generic_reloc
, /* special_function */
1381 "R_PPC_REL16_LO", /* name */
1382 FALSE
, /* partial_inplace */
1384 0xffff, /* dst_mask */
1385 TRUE
), /* pcrel_offset */
1387 /* The high order 16 bits of a relative address. */
1388 HOWTO (R_PPC_REL16_HI
, /* type */
1389 16, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 TRUE
, /* pc_relative */
1394 complain_overflow_dont
, /* complain_on_overflow */
1395 bfd_elf_generic_reloc
, /* special_function */
1396 "R_PPC_REL16_HI", /* name */
1397 FALSE
, /* partial_inplace */
1399 0xffff, /* dst_mask */
1400 TRUE
), /* pcrel_offset */
1402 /* The high order 16 bits of a relative address, plus 1 if the contents of
1403 the low 16 bits, treated as a signed number, is negative. */
1404 HOWTO (R_PPC_REL16_HA
, /* type */
1405 16, /* rightshift */
1406 1, /* size (0 = byte, 1 = short, 2 = long) */
1408 TRUE
, /* pc_relative */
1410 complain_overflow_dont
, /* complain_on_overflow */
1411 ppc_elf_addr16_ha_reloc
, /* special_function */
1412 "R_PPC_REL16_HA", /* name */
1413 FALSE
, /* partial_inplace */
1415 0xffff, /* dst_mask */
1416 TRUE
), /* pcrel_offset */
1418 /* GNU extension to record C++ vtable hierarchy. */
1419 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1421 0, /* size (0 = byte, 1 = short, 2 = long) */
1423 FALSE
, /* pc_relative */
1425 complain_overflow_dont
, /* complain_on_overflow */
1426 NULL
, /* special_function */
1427 "R_PPC_GNU_VTINHERIT", /* name */
1428 FALSE
, /* partial_inplace */
1431 FALSE
), /* pcrel_offset */
1433 /* GNU extension to record C++ vtable member usage. */
1434 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1436 0, /* size (0 = byte, 1 = short, 2 = long) */
1438 FALSE
, /* pc_relative */
1440 complain_overflow_dont
, /* complain_on_overflow */
1441 NULL
, /* special_function */
1442 "R_PPC_GNU_VTENTRY", /* name */
1443 FALSE
, /* partial_inplace */
1446 FALSE
), /* pcrel_offset */
1448 /* Phony reloc to handle AIX style TOC entries. */
1449 HOWTO (R_PPC_TOC16
, /* type */
1451 1, /* size (0 = byte, 1 = short, 2 = long) */
1453 FALSE
, /* pc_relative */
1455 complain_overflow_signed
, /* complain_on_overflow */
1456 bfd_elf_generic_reloc
, /* special_function */
1457 "R_PPC_TOC16", /* name */
1458 FALSE
, /* partial_inplace */
1460 0xffff, /* dst_mask */
1461 FALSE
), /* pcrel_offset */
1464 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1467 ppc_elf_howto_init (void)
1469 unsigned int i
, type
;
1472 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1475 type
= ppc_elf_howto_raw
[i
].type
;
1476 if (type
>= (sizeof (ppc_elf_howto_table
)
1477 / sizeof (ppc_elf_howto_table
[0])))
1479 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1483 static reloc_howto_type
*
1484 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1485 bfd_reloc_code_real_type code
)
1487 enum elf_ppc_reloc_type r
;
1489 /* Initialize howto table if not already done. */
1490 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1491 ppc_elf_howto_init ();
1498 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
1499 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
1500 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
1501 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
1502 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
1503 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
1504 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
1505 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
1506 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
1507 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
1508 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
1509 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
1510 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
1511 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
1512 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
1513 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
1514 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
1515 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
1516 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
1517 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
1518 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
1519 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
1520 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
1521 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
1522 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
1523 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
1524 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
1525 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
1526 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
1527 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
1528 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
1529 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
1530 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
1531 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
1532 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
1533 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
1534 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
1535 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
1536 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
1537 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
1538 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
1539 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
1540 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
1541 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
1542 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
1543 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
1544 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
1545 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
1546 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
1547 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
1548 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
1549 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
1550 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
1551 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
1552 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
1553 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
1554 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
1555 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
1556 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
1557 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
1558 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
1559 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
1560 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
1561 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
1562 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
1563 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
1564 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
1565 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
1566 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
1567 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
1568 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
1569 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
1570 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
1571 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
1572 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
1573 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
1574 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
1575 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
1576 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
1577 case BFD_RELOC_16_PCREL
: r
= R_PPC_REL16
; break;
1578 case BFD_RELOC_LO16_PCREL
: r
= R_PPC_REL16_LO
; break;
1579 case BFD_RELOC_HI16_PCREL
: r
= R_PPC_REL16_HI
; break;
1580 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC_REL16_HA
; break;
1581 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
1582 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
1585 return ppc_elf_howto_table
[r
];
1588 static reloc_howto_type
*
1589 ppc_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1595 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1597 if (ppc_elf_howto_raw
[i
].name
!= NULL
1598 && strcasecmp (ppc_elf_howto_raw
[i
].name
, r_name
) == 0)
1599 return &ppc_elf_howto_raw
[i
];
1604 /* Set the howto pointer for a PowerPC ELF reloc. */
1607 ppc_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1609 Elf_Internal_Rela
*dst
)
1611 /* Initialize howto table if not already done. */
1612 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1613 ppc_elf_howto_init ();
1615 BFD_ASSERT (ELF32_R_TYPE (dst
->r_info
) < (unsigned int) R_PPC_max
);
1616 cache_ptr
->howto
= ppc_elf_howto_table
[ELF32_R_TYPE (dst
->r_info
)];
1618 /* Just because the above assert didn't trigger doesn't mean that
1619 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1620 if (!cache_ptr
->howto
)
1622 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
1623 abfd
, ELF32_R_TYPE (dst
->r_info
));
1624 bfd_set_error (bfd_error_bad_value
);
1626 cache_ptr
->howto
= ppc_elf_howto_table
[R_PPC_NONE
];
1630 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1632 static bfd_reloc_status_type
1633 ppc_elf_addr16_ha_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
1634 arelent
*reloc_entry
,
1636 void *data ATTRIBUTE_UNUSED
,
1637 asection
*input_section
,
1639 char **error_message ATTRIBUTE_UNUSED
)
1643 if (output_bfd
!= NULL
)
1645 reloc_entry
->address
+= input_section
->output_offset
;
1646 return bfd_reloc_ok
;
1649 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
1650 return bfd_reloc_outofrange
;
1652 if (bfd_is_com_section (symbol
->section
))
1655 relocation
= symbol
->value
;
1657 relocation
+= symbol
->section
->output_section
->vma
;
1658 relocation
+= symbol
->section
->output_offset
;
1659 relocation
+= reloc_entry
->addend
;
1660 if (reloc_entry
->howto
->pc_relative
)
1661 relocation
-= reloc_entry
->address
;
1663 reloc_entry
->addend
+= (relocation
& 0x8000) << 1;
1665 return bfd_reloc_continue
;
1668 static bfd_reloc_status_type
1669 ppc_elf_unhandled_reloc (bfd
*abfd
,
1670 arelent
*reloc_entry
,
1673 asection
*input_section
,
1675 char **error_message
)
1677 /* If this is a relocatable link (output_bfd test tells us), just
1678 call the generic function. Any adjustment will be done at final
1680 if (output_bfd
!= NULL
)
1681 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
1682 input_section
, output_bfd
, error_message
);
1684 if (error_message
!= NULL
)
1686 static char buf
[60];
1687 sprintf (buf
, _("generic linker can't handle %s"),
1688 reloc_entry
->howto
->name
);
1689 *error_message
= buf
;
1691 return bfd_reloc_dangerous
;
1694 /* Sections created by the linker. */
1696 typedef struct elf_linker_section
1698 /* Pointer to the bfd section. */
1702 /* Associated bss section name. */
1703 const char *bss_name
;
1704 /* Associated symbol name. */
1705 const char *sym_name
;
1706 /* Associated symbol. */
1707 struct elf_link_hash_entry
*sym
;
1708 } elf_linker_section_t
;
1710 /* Linked list of allocated pointer entries. This hangs off of the
1711 symbol lists, and provides allows us to return different pointers,
1712 based on different addend's. */
1714 typedef struct elf_linker_section_pointers
1716 /* next allocated pointer for this symbol */
1717 struct elf_linker_section_pointers
*next
;
1718 /* offset of pointer from beginning of section */
1722 /* which linker section this is */
1723 elf_linker_section_t
*lsect
;
1724 } elf_linker_section_pointers_t
;
1726 struct ppc_elf_obj_tdata
1728 struct elf_obj_tdata elf
;
1730 /* A mapping from local symbols to offsets into the various linker
1731 sections added. This is index by the symbol index. */
1732 elf_linker_section_pointers_t
**linker_section_pointers
;
1734 /* Flags used to auto-detect plt type. */
1735 unsigned int makes_plt_call
: 1;
1736 unsigned int has_rel16
: 1;
1739 #define ppc_elf_tdata(bfd) \
1740 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1742 #define elf_local_ptr_offsets(bfd) \
1743 (ppc_elf_tdata (bfd)->linker_section_pointers)
1745 #define is_ppc_elf(bfd) \
1746 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1747 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1749 /* Override the generic function because we store some extras. */
1752 ppc_elf_mkobject (bfd
*abfd
)
1754 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
1758 /* Fix bad default arch selected for a 32 bit input bfd when the
1759 default is 64 bit. */
1762 ppc_elf_object_p (bfd
*abfd
)
1764 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 64)
1766 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
1768 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
1770 /* Relies on arch after 64 bit default being 32 bit default. */
1771 abfd
->arch_info
= abfd
->arch_info
->next
;
1772 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
1778 /* Function to set whether a module needs the -mrelocatable bit set. */
1781 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
1783 BFD_ASSERT (!elf_flags_init (abfd
)
1784 || elf_elfheader (abfd
)->e_flags
== flags
);
1786 elf_elfheader (abfd
)->e_flags
= flags
;
1787 elf_flags_init (abfd
) = TRUE
;
1791 /* Support for core dump NOTE sections. */
1794 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1799 switch (note
->descsz
)
1804 case 268: /* Linux/PPC. */
1806 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1809 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1818 /* Make a ".reg/999" section. */
1819 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1820 size
, note
->descpos
+ offset
);
1824 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1826 switch (note
->descsz
)
1831 case 128: /* Linux/PPC elf_prpsinfo. */
1832 elf_tdata (abfd
)->core_program
1833 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
1834 elf_tdata (abfd
)->core_command
1835 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
1838 /* Note that for some reason, a spurious space is tacked
1839 onto the end of the args in some (at least one anyway)
1840 implementations, so strip it off if it exists. */
1843 char *command
= elf_tdata (abfd
)->core_command
;
1844 int n
= strlen (command
);
1846 if (0 < n
&& command
[n
- 1] == ' ')
1847 command
[n
- 1] = '\0';
1854 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
1866 va_start (ap
, note_type
);
1867 memset (data
, 0, 32);
1868 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
1869 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
1871 return elfcore_write_note (abfd
, buf
, bufsiz
,
1872 "CORE", note_type
, data
, sizeof (data
));
1883 va_start (ap
, note_type
);
1884 memset (data
, 0, 72);
1885 pid
= va_arg (ap
, long);
1886 bfd_put_32 (abfd
, pid
, data
+ 24);
1887 cursig
= va_arg (ap
, int);
1888 bfd_put_16 (abfd
, cursig
, data
+ 12);
1889 greg
= va_arg (ap
, const void *);
1890 memcpy (data
+ 72, greg
, 192);
1891 memset (data
+ 264, 0, 4);
1893 return elfcore_write_note (abfd
, buf
, bufsiz
,
1894 "CORE", note_type
, data
, sizeof (data
));
1899 /* Return address for Ith PLT stub in section PLT, for relocation REL
1900 or (bfd_vma) -1 if it should not be included. */
1903 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
1904 const asection
*plt ATTRIBUTE_UNUSED
,
1907 return rel
->address
;
1910 /* Handle a PowerPC specific section when reading an object file. This
1911 is called when bfd_section_from_shdr finds a section with an unknown
1915 ppc_elf_section_from_shdr (bfd
*abfd
,
1916 Elf_Internal_Shdr
*hdr
,
1923 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
1926 newsect
= hdr
->bfd_section
;
1927 flags
= bfd_get_section_flags (abfd
, newsect
);
1928 if (hdr
->sh_flags
& SHF_EXCLUDE
)
1929 flags
|= SEC_EXCLUDE
;
1931 if (hdr
->sh_type
== SHT_ORDERED
)
1932 flags
|= SEC_SORT_ENTRIES
;
1934 bfd_set_section_flags (abfd
, newsect
, flags
);
1938 /* Set up any other section flags and such that may be necessary. */
1941 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1942 Elf_Internal_Shdr
*shdr
,
1945 if ((asect
->flags
& (SEC_GROUP
| SEC_EXCLUDE
)) == SEC_EXCLUDE
)
1946 shdr
->sh_flags
|= SHF_EXCLUDE
;
1948 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
1949 shdr
->sh_type
= SHT_ORDERED
;
1954 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1955 need to bump up the number of section headers. */
1958 ppc_elf_additional_program_headers (bfd
*abfd
,
1959 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1964 s
= bfd_get_section_by_name (abfd
, ".sbss2");
1965 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
1968 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
1969 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
1975 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1976 .PPC.EMB.sbss0 a normal section, and not a bss section so
1977 that the linker doesn't crater when trying to make more than
1980 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
1982 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
1983 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
1984 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
1985 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
1986 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
1987 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
1988 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE
, 0 },
1989 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
1990 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
1991 { NULL
, 0, 0, 0, 0 }
1994 /* This is what we want for new plt/got. */
1995 static struct bfd_elf_special_section ppc_alt_plt
=
1996 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
1998 static const struct bfd_elf_special_section
*
1999 ppc_elf_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
2001 const struct bfd_elf_special_section
*ssect
;
2003 /* See if this is one of the special sections. */
2004 if (sec
->name
== NULL
)
2007 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2011 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2012 ssect
= &ppc_alt_plt
;
2016 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2019 /* Very simple linked list structure for recording apuinfo values. */
2020 typedef struct apuinfo_list
2022 struct apuinfo_list
*next
;
2023 unsigned long value
;
2027 static apuinfo_list
*head
;
2031 apuinfo_list_init (void)
2037 apuinfo_list_add (unsigned long value
)
2039 apuinfo_list
*entry
= head
;
2041 while (entry
!= NULL
)
2043 if (entry
->value
== value
)
2045 entry
= entry
->next
;
2048 entry
= bfd_malloc (sizeof (* entry
));
2052 entry
->value
= value
;
2058 apuinfo_list_length (void)
2060 apuinfo_list
*entry
;
2061 unsigned long count
;
2063 for (entry
= head
, count
= 0;
2065 entry
= entry
->next
)
2071 static inline unsigned long
2072 apuinfo_list_element (unsigned long number
)
2074 apuinfo_list
* entry
;
2078 entry
= entry
->next
)
2081 return entry
? entry
->value
: 0;
2085 apuinfo_list_finish (void)
2087 apuinfo_list
*entry
;
2089 for (entry
= head
; entry
;)
2091 apuinfo_list
*next
= entry
->next
;
2099 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2100 #define APUINFO_LABEL "APUinfo"
2102 /* Scan the input BFDs and create a linked list of
2103 the APUinfo values that will need to be emitted. */
2106 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2111 unsigned num_input_sections
;
2112 bfd_size_type output_section_size
;
2114 unsigned num_entries
;
2115 unsigned long offset
;
2116 unsigned long length
;
2117 const char *error_message
= NULL
;
2119 if (link_info
== NULL
)
2122 /* Scan the input bfds, looking for apuinfo sections. */
2123 num_input_sections
= 0;
2124 output_section_size
= 0;
2126 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2128 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2131 ++ num_input_sections
;
2132 output_section_size
+= asec
->size
;
2136 /* We need at least one input sections
2137 in order to make merging worthwhile. */
2138 if (num_input_sections
< 1)
2141 /* Just make sure that the output section exists as well. */
2142 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2146 /* Allocate a buffer for the contents of the input sections. */
2147 buffer
= bfd_malloc (output_section_size
);
2152 apuinfo_list_init ();
2154 /* Read in the input sections contents. */
2155 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2157 unsigned long datum
;
2160 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2164 length
= asec
->size
;
2167 error_message
= _("corrupt or empty %s section in %B");
2171 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2172 || (bfd_bread (buffer
+ offset
, length
, ibfd
) != length
))
2174 error_message
= _("unable to read in %s section from %B");
2178 /* Process the contents of the section. */
2179 ptr
= buffer
+ offset
;
2180 error_message
= _("corrupt %s section in %B");
2182 /* Verify the contents of the header. Note - we have to
2183 extract the values this way in order to allow for a
2184 host whose endian-ness is different from the target. */
2185 datum
= bfd_get_32 (ibfd
, ptr
);
2186 if (datum
!= sizeof APUINFO_LABEL
)
2189 datum
= bfd_get_32 (ibfd
, ptr
+ 8);
2193 if (strcmp (ptr
+ 12, APUINFO_LABEL
) != 0)
2196 /* Get the number of bytes used for apuinfo entries. */
2197 datum
= bfd_get_32 (ibfd
, ptr
+ 4);
2198 if (datum
+ 20 != length
)
2201 /* Make sure that we do not run off the end of the section. */
2202 if (offset
+ length
> output_section_size
)
2205 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2206 for (i
= 0; i
< datum
; i
+= 4)
2207 apuinfo_list_add (bfd_get_32 (ibfd
, ptr
+ 20 + i
));
2209 /* Update the offset. */
2213 error_message
= NULL
;
2215 /* Compute the size of the output section. */
2216 num_entries
= apuinfo_list_length ();
2217 output_section_size
= 20 + num_entries
* 4;
2219 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2221 if (! bfd_set_section_size (abfd
, asec
, output_section_size
))
2223 error_message
= _("warning: unable to set size of %s section in %B");
2229 (*_bfd_error_handler
) (error_message
, ibfd
, APUINFO_SECTION_NAME
);
2232 /* Prevent the output section from accumulating the input sections'
2233 contents. We have already stored this in our linked list structure. */
2236 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2237 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2239 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2241 return (apuinfo_list_length ()
2242 && strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0);
2245 /* Finally we can generate the output section. */
2248 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2253 unsigned num_entries
;
2254 bfd_size_type length
;
2256 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2260 if (apuinfo_list_length () == 0)
2263 length
= asec
->size
;
2267 buffer
= bfd_malloc (length
);
2270 (*_bfd_error_handler
)
2271 (_("failed to allocate space for new APUinfo section."));
2275 /* Create the apuinfo header. */
2276 num_entries
= apuinfo_list_length ();
2277 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2278 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2279 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2280 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2283 for (i
= 0; i
< num_entries
; i
++)
2285 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2289 if (length
!= asec
->size
)
2290 (*_bfd_error_handler
) (_("failed to compute new APUinfo section."));
2292 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2293 (*_bfd_error_handler
) (_("failed to install new APUinfo section."));
2297 apuinfo_list_finish ();
2301 is_pic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2306 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, 16))
2309 insn
= bfd_get_32 (abfd
, buf
);
2310 if ((insn
& 0xffff0000) == LWZ_11_30
2311 && bfd_get_32 (abfd
, buf
+ 4) == MTCTR_11
2312 && bfd_get_32 (abfd
, buf
+ 8) == BCTR
)
2315 if ((insn
& 0xffff0000) == ADDIS_11_30
2316 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2317 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
2318 && bfd_get_32 (abfd
, buf
+ 12) == BCTR
)
2324 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2326 bfd_vma vma
= *(bfd_vma
*) ptr
;
2327 return ((section
->flags
& SEC_ALLOC
) != 0
2328 && section
->vma
<= vma
2329 && vma
< section
->vma
+ section
->size
);
2333 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2334 long dynsymcount
, asymbol
**dynsyms
,
2337 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2338 asection
*plt
, *relplt
, *dynamic
, *glink
;
2339 bfd_vma glink_vma
= 0;
2340 bfd_vma resolv_vma
= 0;
2351 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2354 if (dynsymcount
<= 0)
2357 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2361 plt
= bfd_get_section_by_name (abfd
, ".plt");
2365 /* Call common code to handle old-style executable PLTs. */
2366 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2367 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2368 dynsymcount
, dynsyms
, ret
);
2370 /* If this object was prelinked, the prelinker stored the address
2371 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2372 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2373 if (dynamic
!= NULL
)
2375 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2377 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2379 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2382 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2383 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2386 extdynend
= extdyn
+ dynamic
->size
;
2387 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2389 Elf_Internal_Dyn dyn
;
2390 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2392 if (dyn
.d_tag
== DT_NULL
)
2395 if (dyn
.d_tag
== DT_PPC_GOT
)
2397 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2398 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2400 && bfd_get_section_contents (abfd
, got
, buf
,
2401 g_o_t
- got
->vma
+ 4, 4))
2402 glink_vma
= bfd_get_32 (abfd
, buf
);
2409 /* Otherwise we read the first plt entry. */
2412 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
2413 glink_vma
= bfd_get_32 (abfd
, buf
);
2419 /* The .glink section usually does not survive the final
2420 link; search for the section (usually .text) where the
2421 glink stubs now reside. */
2422 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
2426 /* Determine glink PLT resolver by reading the relative branch
2427 from the first glink stub. */
2428 if (bfd_get_section_contents (abfd
, glink
, buf
,
2429 glink_vma
- glink
->vma
, 4))
2431 unsigned int insn
= bfd_get_32 (abfd
, buf
);
2433 /* The first glink stub may either branch to the resolver ... */
2435 if ((insn
& ~0x3fffffc) == 0)
2436 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
2438 /* ... or fall through a bunch of NOPs. */
2439 else if ((insn
^ B
^ NOP
) == 0)
2441 bfd_get_section_contents (abfd
, glink
, buf
,
2442 glink_vma
- glink
->vma
+ i
, 4);
2444 if (bfd_get_32 (abfd
, buf
) != NOP
)
2446 resolv_vma
= glink_vma
+ i
;
2451 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
2452 stub_vma
= glink_vma
- (bfd_vma
) count
* 16;
2453 /* If the stubs are those for -shared/-pie then we might have
2454 multiple stubs for each plt entry. If that is the case then
2455 there is no way to associate stubs with their plt entries short
2456 of figuring out the GOT pointer value used in the stub. */
2457 if (!bfd_get_section_contents (abfd
, glink
, buf
,
2458 stub_vma
- glink
->vma
, 4)
2459 || ((bfd_get_32 (abfd
, buf
) & 0xffff0000) != LIS_11
2460 && is_pic_glink_stub (abfd
, glink
, stub_vma
- glink
->vma
- 16)))
2463 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2464 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
2467 size
= count
* sizeof (asymbol
);
2468 p
= relplt
->relocation
;
2469 for (i
= 0; i
< count
; i
++, p
++)
2470 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
2472 size
+= sizeof (asymbol
) + sizeof ("__glink");
2475 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
2477 s
= *ret
= bfd_malloc (size
);
2481 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
2482 p
= relplt
->relocation
;
2483 for (i
= 0; i
< count
; i
++, p
++)
2487 *s
= **p
->sym_ptr_ptr
;
2488 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2489 we are defining a symbol, ensure one of them is set. */
2490 if ((s
->flags
& BSF_LOCAL
) == 0)
2491 s
->flags
|= BSF_GLOBAL
;
2492 s
->flags
|= BSF_SYNTHETIC
;
2494 s
->value
= stub_vma
- glink
->vma
;
2497 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
2498 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
2500 memcpy (names
, "@plt", sizeof ("@plt"));
2501 names
+= sizeof ("@plt");
2506 /* Add a symbol at the start of the glink branch table. */
2507 memset (s
, 0, sizeof *s
);
2509 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
2511 s
->value
= glink_vma
- glink
->vma
;
2513 memcpy (names
, "__glink", sizeof ("__glink"));
2514 names
+= sizeof ("__glink");
2520 /* Add a symbol for the glink PLT resolver. */
2521 memset (s
, 0, sizeof *s
);
2523 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
2525 s
->value
= resolv_vma
- glink
->vma
;
2527 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2528 names
+= sizeof ("__glink_PLTresolve");
2536 /* The following functions are specific to the ELF linker, while
2537 functions above are used generally. They appear in this file more
2538 or less in the order in which they are called. eg.
2539 ppc_elf_check_relocs is called early in the link process,
2540 ppc_elf_finish_dynamic_sections is one of the last functions
2543 /* The PPC linker needs to keep track of the number of relocs that it
2544 decides to copy as dynamic relocs in check_relocs for each symbol.
2545 This is so that it can later discard them if they are found to be
2546 unnecessary. We store the information in a field extending the
2547 regular ELF linker hash table. */
2549 struct ppc_elf_dyn_relocs
2551 struct ppc_elf_dyn_relocs
*next
;
2553 /* The input section of the reloc. */
2556 /* Total number of relocs copied for the input section. */
2557 bfd_size_type count
;
2559 /* Number of pc-relative relocs copied for the input section. */
2560 bfd_size_type pc_count
;
2563 /* Track PLT entries needed for a given symbol. We might need more
2564 than one glink entry per symbol. */
2567 struct plt_entry
*next
;
2569 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2570 This field stores the offset into .got2 used to initialise the
2571 GOT pointer reg. It will always be at least 32768 (and for
2572 current gcc this is the only offset used). */
2575 /* The .got2 section. */
2578 /* PLT refcount or offset. */
2581 bfd_signed_vma refcount
;
2585 /* .glink stub offset. */
2586 bfd_vma glink_offset
;
2589 /* Of those relocs that might be copied as dynamic relocs, this function
2590 selects those that must be copied when linking a shared library,
2591 even when the symbol is local. */
2594 must_be_dyn_reloc (struct bfd_link_info
*info
,
2595 enum elf_ppc_reloc_type r_type
)
2604 case R_PPC_REL14_BRTAKEN
:
2605 case R_PPC_REL14_BRNTAKEN
:
2611 case R_PPC_TPREL16_LO
:
2612 case R_PPC_TPREL16_HI
:
2613 case R_PPC_TPREL16_HA
:
2614 return !info
->executable
;
2618 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2619 copying dynamic variables from a shared lib into an app's dynbss
2620 section, and instead use a dynamic relocation to point into the
2622 #define ELIMINATE_COPY_RELOCS 1
2624 /* PPC ELF linker hash entry. */
2626 struct ppc_elf_link_hash_entry
2628 struct elf_link_hash_entry elf
;
2630 /* If this symbol is used in the linker created sections, the processor
2631 specific backend uses this field to map the field into the offset
2632 from the beginning of the section. */
2633 elf_linker_section_pointers_t
*linker_section_pointer
;
2635 /* Track dynamic relocs copied for this symbol. */
2636 struct ppc_elf_dyn_relocs
*dyn_relocs
;
2638 /* Contexts in which symbol is used in the GOT (or TOC).
2639 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2640 corresponding relocs are encountered during check_relocs.
2641 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2642 indicate the corresponding GOT entry type is not needed. */
2643 #define TLS_GD 1 /* GD reloc. */
2644 #define TLS_LD 2 /* LD reloc. */
2645 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2646 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2647 #define TLS_TLS 16 /* Any TLS reloc. */
2648 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2651 /* Nonzero if we have seen a small data relocation referring to this
2653 unsigned char has_sda_refs
;
2656 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2658 /* PPC ELF linker hash table. */
2660 struct ppc_elf_link_hash_table
2662 struct elf_link_hash_table elf
;
2664 /* Short-cuts to get to dynamic linker sections. */
2674 elf_linker_section_t sdata
[2];
2677 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2680 /* The .got.plt section (VxWorks only)*/
2683 /* Shortcut to __tls_get_addr. */
2684 struct elf_link_hash_entry
*tls_get_addr
;
2686 /* The bfd that forced an old-style PLT. */
2689 /* TLS local dynamic got entry handling. */
2691 bfd_signed_vma refcount
;
2695 /* Offset of PltResolve function in glink. */
2696 bfd_vma glink_pltresolve
;
2698 /* Size of reserved GOT entries. */
2699 unsigned int got_header_size
;
2700 /* Non-zero if allocating the header left a gap. */
2701 unsigned int got_gap
;
2703 /* The type of PLT we have chosen to use. */
2704 enum ppc_elf_plt_type plt_type
;
2706 /* Set if we should emit symbols for stubs. */
2707 unsigned int emit_stub_syms
:1;
2709 /* True if the target system is VxWorks. */
2710 unsigned int is_vxworks
:1;
2712 /* The size of PLT entries. */
2714 /* The distance between adjacent PLT slots. */
2716 /* The size of the first PLT entry. */
2717 int plt_initial_entry_size
;
2719 /* Small local sym to section mapping cache. */
2720 struct sym_sec_cache sym_sec
;
2723 /* Get the PPC ELF linker hash table from a link_info structure. */
2725 #define ppc_elf_hash_table(p) \
2726 ((struct ppc_elf_link_hash_table *) (p)->hash)
2728 /* Create an entry in a PPC ELF linker hash table. */
2730 static struct bfd_hash_entry
*
2731 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2732 struct bfd_hash_table
*table
,
2735 /* Allocate the structure if it has not already been allocated by a
2739 entry
= bfd_hash_allocate (table
,
2740 sizeof (struct ppc_elf_link_hash_entry
));
2745 /* Call the allocation method of the superclass. */
2746 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
2749 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
2750 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
2751 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
2757 /* Create a PPC ELF linker hash table. */
2759 static struct bfd_link_hash_table
*
2760 ppc_elf_link_hash_table_create (bfd
*abfd
)
2762 struct ppc_elf_link_hash_table
*ret
;
2764 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
2768 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
2769 ppc_elf_link_hash_newfunc
,
2770 sizeof (struct ppc_elf_link_hash_entry
)))
2776 ret
->elf
.init_plt_refcount
.refcount
= 0;
2777 ret
->elf
.init_plt_refcount
.glist
= NULL
;
2778 ret
->elf
.init_plt_offset
.offset
= 0;
2779 ret
->elf
.init_plt_offset
.glist
= NULL
;
2781 ret
->sdata
[0].name
= ".sdata";
2782 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
2783 ret
->sdata
[0].bss_name
= ".sbss";
2785 ret
->sdata
[1].name
= ".sdata2";
2786 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
2787 ret
->sdata
[1].bss_name
= ".sbss2";
2789 ret
->plt_entry_size
= 12;
2790 ret
->plt_slot_size
= 8;
2791 ret
->plt_initial_entry_size
= 72;
2793 return &ret
->elf
.root
;
2796 /* Create .got and the related sections. */
2799 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
2801 struct ppc_elf_link_hash_table
*htab
;
2805 if (!_bfd_elf_create_got_section (abfd
, info
))
2808 htab
= ppc_elf_hash_table (info
);
2809 htab
->got
= s
= bfd_get_section_by_name (abfd
, ".got");
2813 if (htab
->is_vxworks
)
2815 htab
->sgotplt
= bfd_get_section_by_name (abfd
, ".got.plt");
2821 /* The powerpc .got has a blrl instruction in it. Mark it
2823 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
2824 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2825 if (!bfd_set_section_flags (abfd
, s
, flags
))
2829 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2830 | SEC_LINKER_CREATED
| SEC_READONLY
);
2831 htab
->relgot
= bfd_make_section_with_flags (abfd
, ".rela.got", flags
);
2833 || ! bfd_set_section_alignment (abfd
, htab
->relgot
, 2))
2839 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2840 to output sections (just like _bfd_elf_create_dynamic_sections has
2841 to create .dynbss and .rela.bss). */
2844 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2846 struct ppc_elf_link_hash_table
*htab
;
2850 htab
= ppc_elf_hash_table (info
);
2852 if (htab
->got
== NULL
2853 && !ppc_elf_create_got (abfd
, info
))
2856 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
2859 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
2860 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2862 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
| SEC_CODE
);
2865 || !bfd_set_section_alignment (abfd
, s
, 4))
2868 htab
->dynbss
= bfd_get_section_by_name (abfd
, ".dynbss");
2869 s
= bfd_make_section_with_flags (abfd
, ".dynsbss",
2870 SEC_ALLOC
| SEC_LINKER_CREATED
);
2877 htab
->relbss
= bfd_get_section_by_name (abfd
, ".rela.bss");
2878 s
= bfd_make_section_with_flags (abfd
, ".rela.sbss", flags
);
2881 || ! bfd_set_section_alignment (abfd
, s
, 2))
2885 if (htab
->is_vxworks
2886 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
2889 htab
->relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2890 htab
->plt
= s
= bfd_get_section_by_name (abfd
, ".plt");
2894 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
2895 if (htab
->plt_type
== PLT_VXWORKS
)
2896 /* The VxWorks PLT is a loaded section with contents. */
2897 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
2898 return bfd_set_section_flags (abfd
, s
, flags
);
2901 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2904 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2905 struct elf_link_hash_entry
*dir
,
2906 struct elf_link_hash_entry
*ind
)
2908 struct ppc_elf_link_hash_entry
*edir
, *eind
;
2910 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
2911 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
2913 if (eind
->dyn_relocs
!= NULL
)
2915 if (edir
->dyn_relocs
!= NULL
)
2917 struct ppc_elf_dyn_relocs
**pp
;
2918 struct ppc_elf_dyn_relocs
*p
;
2920 /* Add reloc counts against the indirect sym to the direct sym
2921 list. Merge any entries against the same section. */
2922 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
2924 struct ppc_elf_dyn_relocs
*q
;
2926 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2927 if (q
->sec
== p
->sec
)
2929 q
->pc_count
+= p
->pc_count
;
2930 q
->count
+= p
->count
;
2937 *pp
= edir
->dyn_relocs
;
2940 edir
->dyn_relocs
= eind
->dyn_relocs
;
2941 eind
->dyn_relocs
= NULL
;
2944 edir
->tls_mask
|= eind
->tls_mask
;
2945 edir
->has_sda_refs
|= eind
->has_sda_refs
;
2947 /* If called to transfer flags for a weakdef during processing
2948 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2949 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2950 if (!(ELIMINATE_COPY_RELOCS
2951 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
2952 && edir
->elf
.dynamic_adjusted
))
2953 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
2955 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
2956 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
2957 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
2958 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
2959 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
2961 /* If we were called to copy over info for a weak sym, that's all. */
2962 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
2965 /* Copy over the GOT refcount entries that we may have already seen to
2966 the symbol which just became indirect. */
2967 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
2968 eind
->elf
.got
.refcount
= 0;
2970 /* And plt entries. */
2971 if (eind
->elf
.plt
.plist
!= NULL
)
2973 if (edir
->elf
.plt
.plist
!= NULL
)
2975 struct plt_entry
**entp
;
2976 struct plt_entry
*ent
;
2978 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
2980 struct plt_entry
*dent
;
2982 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
2983 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
2985 dent
->plt
.refcount
+= ent
->plt
.refcount
;
2992 *entp
= edir
->elf
.plt
.plist
;
2995 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
2996 eind
->elf
.plt
.plist
= NULL
;
2999 if (eind
->elf
.dynindx
!= -1)
3001 if (edir
->elf
.dynindx
!= -1)
3002 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3003 edir
->elf
.dynstr_index
);
3004 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3005 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3006 eind
->elf
.dynindx
= -1;
3007 eind
->elf
.dynstr_index
= 0;
3011 /* Hook called by the linker routine which adds symbols from an object
3012 file. We use it to put .comm items in .sbss, and not .bss. */
3015 ppc_elf_add_symbol_hook (bfd
*abfd
,
3016 struct bfd_link_info
*info
,
3017 Elf_Internal_Sym
*sym
,
3018 const char **namep ATTRIBUTE_UNUSED
,
3019 flagword
*flagsp ATTRIBUTE_UNUSED
,
3023 if (sym
->st_shndx
== SHN_COMMON
3024 && !info
->relocatable
3025 && is_ppc_elf (info
->output_bfd
)
3026 && sym
->st_size
<= elf_gp_size (abfd
))
3028 /* Common symbols less than or equal to -G nn bytes are automatically
3030 struct ppc_elf_link_hash_table
*htab
;
3032 htab
= ppc_elf_hash_table (info
);
3033 if (htab
->sbss
== NULL
)
3035 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3037 if (!htab
->elf
.dynobj
)
3038 htab
->elf
.dynobj
= abfd
;
3040 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3043 if (htab
->sbss
== NULL
)
3048 *valp
= sym
->st_size
;
3055 create_sdata_sym (struct ppc_elf_link_hash_table
*htab
,
3056 elf_linker_section_t
*lsect
)
3058 lsect
->sym
= elf_link_hash_lookup (&htab
->elf
, lsect
->sym_name
,
3060 if (lsect
->sym
== NULL
)
3062 if (lsect
->sym
->root
.type
== bfd_link_hash_new
)
3063 lsect
->sym
->non_elf
= 0;
3064 lsect
->sym
->ref_regular
= 1;
3068 /* Create a special linker section. */
3071 ppc_elf_create_linker_section (bfd
*abfd
,
3072 struct bfd_link_info
*info
,
3074 elf_linker_section_t
*lsect
)
3076 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3079 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3080 | SEC_LINKER_CREATED
);
3082 /* Record the first bfd that needs the special sections. */
3083 if (!htab
->elf
.dynobj
)
3084 htab
->elf
.dynobj
= abfd
;
3086 s
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3090 || !bfd_set_section_alignment (htab
->elf
.dynobj
, s
, 2))
3094 return create_sdata_sym (htab
, lsect
);
3097 /* Find a linker generated pointer with a given addend and type. */
3099 static elf_linker_section_pointers_t
*
3100 elf_find_pointer_linker_section
3101 (elf_linker_section_pointers_t
*linker_pointers
,
3103 elf_linker_section_t
*lsect
)
3105 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3106 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3107 return linker_pointers
;
3112 /* Allocate a pointer to live in a linker created section. */
3115 elf_create_pointer_linker_section (bfd
*abfd
,
3116 elf_linker_section_t
*lsect
,
3117 struct elf_link_hash_entry
*h
,
3118 const Elf_Internal_Rela
*rel
)
3120 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3121 elf_linker_section_pointers_t
*linker_section_ptr
;
3122 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3125 BFD_ASSERT (lsect
!= NULL
);
3127 /* Is this a global symbol? */
3130 struct ppc_elf_link_hash_entry
*eh
;
3132 /* Has this symbol already been allocated? If so, our work is done. */
3133 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3134 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3139 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3143 BFD_ASSERT (is_ppc_elf (abfd
));
3145 /* Allocation of a pointer to a local symbol. */
3146 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3148 /* Allocate a table to hold the local symbols if first time. */
3151 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3154 amt
*= sizeof (elf_linker_section_pointers_t
*);
3155 ptr
= bfd_zalloc (abfd
, amt
);
3160 elf_local_ptr_offsets (abfd
) = ptr
;
3163 /* Has this symbol already been allocated? If so, our work is done. */
3164 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3169 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3172 /* Allocate space for a pointer in the linker section, and allocate
3173 a new pointer record from internal memory. */
3174 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3175 amt
= sizeof (elf_linker_section_pointers_t
);
3176 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3178 if (!linker_section_ptr
)
3181 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3182 linker_section_ptr
->addend
= rel
->r_addend
;
3183 linker_section_ptr
->lsect
= lsect
;
3184 *ptr_linker_section_ptr
= linker_section_ptr
;
3186 linker_section_ptr
->offset
= lsect
->section
->size
;
3187 lsect
->section
->size
+= 4;
3191 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3192 lsect
->name
, (long) linker_section_ptr
->offset
,
3193 (long) lsect
->section
->size
);
3200 update_local_sym_info (bfd
*abfd
,
3201 Elf_Internal_Shdr
*symtab_hdr
,
3202 unsigned long r_symndx
,
3205 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3206 char *local_got_tls_masks
;
3208 if (local_got_refcounts
== NULL
)
3210 bfd_size_type size
= symtab_hdr
->sh_info
;
3212 size
*= sizeof (*local_got_refcounts
) + sizeof (*local_got_tls_masks
);
3213 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3214 if (local_got_refcounts
== NULL
)
3216 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3219 local_got_refcounts
[r_symndx
] += 1;
3220 local_got_tls_masks
= (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3221 local_got_tls_masks
[r_symndx
] |= tls_type
;
3226 update_plt_info (bfd
*abfd
, struct elf_link_hash_entry
*h
,
3227 asection
*sec
, bfd_vma addend
)
3229 struct plt_entry
*ent
;
3233 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
3234 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3238 bfd_size_type amt
= sizeof (*ent
);
3239 ent
= bfd_alloc (abfd
, amt
);
3242 ent
->next
= h
->plt
.plist
;
3244 ent
->addend
= addend
;
3245 ent
->plt
.refcount
= 0;
3248 ent
->plt
.refcount
+= 1;
3252 static struct plt_entry
*
3253 find_plt_ent (struct elf_link_hash_entry
*h
, asection
*sec
, bfd_vma addend
)
3255 struct plt_entry
*ent
;
3259 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
3260 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3266 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3268 (*_bfd_error_handler
)
3269 (_("%B: relocation %s cannot be used when making a shared object"),
3271 ppc_elf_howto_table
[r_type
]->name
);
3272 bfd_set_error (bfd_error_bad_value
);
3275 /* Look through the relocs for a section during the first phase, and
3276 allocate space in the global offset table or procedure linkage
3280 ppc_elf_check_relocs (bfd
*abfd
,
3281 struct bfd_link_info
*info
,
3283 const Elf_Internal_Rela
*relocs
)
3285 struct ppc_elf_link_hash_table
*htab
;
3286 Elf_Internal_Shdr
*symtab_hdr
;
3287 struct elf_link_hash_entry
**sym_hashes
;
3288 const Elf_Internal_Rela
*rel
;
3289 const Elf_Internal_Rela
*rel_end
;
3290 asection
*got2
, *sreloc
;
3292 if (info
->relocatable
)
3295 /* Don't do anything special with non-loaded, non-alloced sections.
3296 In particular, any relocs in such sections should not affect GOT
3297 and PLT reference counting (ie. we don't allow them to create GOT
3298 or PLT entries), there's no possibility or desire to optimize TLS
3299 relocs, and there's not much point in propagating relocs to shared
3300 libs that the dynamic linker won't relocate. */
3301 if ((sec
->flags
& SEC_ALLOC
) == 0)
3305 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3309 BFD_ASSERT (is_ppc_elf (abfd
));
3311 /* Initialize howto table if not already done. */
3312 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3313 ppc_elf_howto_init ();
3315 htab
= ppc_elf_hash_table (info
);
3316 symtab_hdr
= &elf_symtab_hdr (abfd
);
3317 sym_hashes
= elf_sym_hashes (abfd
);
3318 got2
= bfd_get_section_by_name (abfd
, ".got2");
3321 rel_end
= relocs
+ sec
->reloc_count
;
3322 for (rel
= relocs
; rel
< rel_end
; rel
++)
3324 unsigned long r_symndx
;
3325 enum elf_ppc_reloc_type r_type
;
3326 struct elf_link_hash_entry
*h
;
3329 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3330 if (r_symndx
< symtab_hdr
->sh_info
)
3334 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3335 while (h
->root
.type
== bfd_link_hash_indirect
3336 || h
->root
.type
== bfd_link_hash_warning
)
3337 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3340 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3341 This shows up in particular in an R_PPC_ADDR32 in the eabi
3344 && htab
->got
== NULL
3345 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3347 if (htab
->elf
.dynobj
== NULL
)
3348 htab
->elf
.dynobj
= abfd
;
3349 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3351 BFD_ASSERT (h
== htab
->elf
.hgot
);
3354 r_type
= ELF32_R_TYPE (rel
->r_info
);
3357 case R_PPC_GOT_TLSLD16
:
3358 case R_PPC_GOT_TLSLD16_LO
:
3359 case R_PPC_GOT_TLSLD16_HI
:
3360 case R_PPC_GOT_TLSLD16_HA
:
3361 tls_type
= TLS_TLS
| TLS_LD
;
3364 case R_PPC_GOT_TLSGD16
:
3365 case R_PPC_GOT_TLSGD16_LO
:
3366 case R_PPC_GOT_TLSGD16_HI
:
3367 case R_PPC_GOT_TLSGD16_HA
:
3368 tls_type
= TLS_TLS
| TLS_GD
;
3371 case R_PPC_GOT_TPREL16
:
3372 case R_PPC_GOT_TPREL16_LO
:
3373 case R_PPC_GOT_TPREL16_HI
:
3374 case R_PPC_GOT_TPREL16_HA
:
3375 if (!info
->executable
)
3376 info
->flags
|= DF_STATIC_TLS
;
3377 tls_type
= TLS_TLS
| TLS_TPREL
;
3380 case R_PPC_GOT_DTPREL16
:
3381 case R_PPC_GOT_DTPREL16_LO
:
3382 case R_PPC_GOT_DTPREL16_HI
:
3383 case R_PPC_GOT_DTPREL16_HA
:
3384 tls_type
= TLS_TLS
| TLS_DTPREL
;
3386 sec
->has_tls_reloc
= 1;
3389 /* GOT16 relocations */
3391 case R_PPC_GOT16_LO
:
3392 case R_PPC_GOT16_HI
:
3393 case R_PPC_GOT16_HA
:
3394 /* This symbol requires a global offset table entry. */
3395 if (htab
->got
== NULL
)
3397 if (htab
->elf
.dynobj
== NULL
)
3398 htab
->elf
.dynobj
= abfd
;
3399 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3404 h
->got
.refcount
+= 1;
3405 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
3408 /* This is a global offset table entry for a local symbol. */
3409 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
3413 /* Indirect .sdata relocation. */
3414 case R_PPC_EMB_SDAI16
:
3417 bad_shared_reloc (abfd
, r_type
);
3420 if (htab
->sdata
[0].section
== NULL
3421 && !ppc_elf_create_linker_section (abfd
, info
, 0,
3424 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[0],
3429 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3430 h
->non_got_ref
= TRUE
;
3434 /* Indirect .sdata2 relocation. */
3435 case R_PPC_EMB_SDA2I16
:
3438 bad_shared_reloc (abfd
, r_type
);
3441 if (htab
->sdata
[1].section
== NULL
3442 && !ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3445 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[1],
3450 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3451 h
->non_got_ref
= TRUE
;
3455 case R_PPC_SDAREL16
:
3458 bad_shared_reloc (abfd
, r_type
);
3461 if (htab
->sdata
[0].sym
== NULL
3462 && !create_sdata_sym (htab
, &htab
->sdata
[0]))
3466 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3467 h
->non_got_ref
= TRUE
;
3471 case R_PPC_EMB_SDA2REL
:
3474 bad_shared_reloc (abfd
, r_type
);
3477 if (htab
->sdata
[1].sym
== NULL
3478 && !create_sdata_sym (htab
, &htab
->sdata
[1]))
3482 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3483 h
->non_got_ref
= TRUE
;
3487 case R_PPC_EMB_SDA21
:
3488 case R_PPC_EMB_RELSDA
:
3491 bad_shared_reloc (abfd
, r_type
);
3494 if (htab
->sdata
[0].sym
== NULL
3495 && !create_sdata_sym (htab
, &htab
->sdata
[0]))
3497 if (htab
->sdata
[1].sym
== NULL
3498 && !create_sdata_sym (htab
, &htab
->sdata
[1]))
3502 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3503 h
->non_got_ref
= TRUE
;
3507 case R_PPC_EMB_NADDR32
:
3508 case R_PPC_EMB_NADDR16
:
3509 case R_PPC_EMB_NADDR16_LO
:
3510 case R_PPC_EMB_NADDR16_HI
:
3511 case R_PPC_EMB_NADDR16_HA
:
3514 bad_shared_reloc (abfd
, r_type
);
3518 h
->non_got_ref
= TRUE
;
3522 case R_PPC_PLTREL24
:
3523 case R_PPC_PLTREL32
:
3524 case R_PPC_PLT16_LO
:
3525 case R_PPC_PLT16_HI
:
3526 case R_PPC_PLT16_HA
:
3528 fprintf (stderr
, "Reloc requires a PLT entry\n");
3530 /* This symbol requires a procedure linkage table entry. We
3531 actually build the entry in finish_dynamic_symbol,
3532 because this might be a case of linking PIC code without
3533 linking in any dynamic objects, in which case we don't
3534 need to generate a procedure linkage table after all. */
3538 /* It does not make sense to have a procedure linkage
3539 table entry for a local symbol. */
3540 (*_bfd_error_handler
) (_("%B(%A+0x%lx): %s reloc against "
3544 (long) rel
->r_offset
,
3545 ppc_elf_howto_table
[r_type
]->name
);
3546 bfd_set_error (bfd_error_bad_value
);
3553 if (r_type
== R_PPC_PLTREL24
)
3555 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
3556 addend
= rel
->r_addend
;
3559 if (!update_plt_info (abfd
, h
, got2
, addend
))
3564 /* The following relocations don't need to propagate the
3565 relocation if linking a shared object since they are
3566 section relative. */
3568 case R_PPC_SECTOFF_LO
:
3569 case R_PPC_SECTOFF_HI
:
3570 case R_PPC_SECTOFF_HA
:
3571 case R_PPC_DTPREL16
:
3572 case R_PPC_DTPREL16_LO
:
3573 case R_PPC_DTPREL16_HI
:
3574 case R_PPC_DTPREL16_HA
:
3579 case R_PPC_REL16_LO
:
3580 case R_PPC_REL16_HI
:
3581 case R_PPC_REL16_HA
:
3582 ppc_elf_tdata (abfd
)->has_rel16
= 1;
3585 /* These are just markers. */
3587 case R_PPC_EMB_MRKREF
:
3592 /* These should only appear in dynamic objects. */
3594 case R_PPC_GLOB_DAT
:
3595 case R_PPC_JMP_SLOT
:
3596 case R_PPC_RELATIVE
:
3599 /* These aren't handled yet. We'll report an error later. */
3601 case R_PPC_EMB_RELSEC16
:
3602 case R_PPC_EMB_RELST_LO
:
3603 case R_PPC_EMB_RELST_HI
:
3604 case R_PPC_EMB_RELST_HA
:
3605 case R_PPC_EMB_BIT_FLD
:
3608 /* This refers only to functions defined in the shared library. */
3609 case R_PPC_LOCAL24PC
:
3610 if (h
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
3612 htab
->plt_type
= PLT_OLD
;
3613 htab
->old_bfd
= abfd
;
3617 /* This relocation describes the C++ object vtable hierarchy.
3618 Reconstruct it for later use during GC. */
3619 case R_PPC_GNU_VTINHERIT
:
3620 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3624 /* This relocation describes which C++ vtable entries are actually
3625 used. Record for later use during GC. */
3626 case R_PPC_GNU_VTENTRY
:
3627 BFD_ASSERT (h
!= NULL
);
3629 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3633 /* We shouldn't really be seeing these. */
3636 case R_PPC_TPREL16_LO
:
3637 case R_PPC_TPREL16_HI
:
3638 case R_PPC_TPREL16_HA
:
3639 if (!info
->executable
)
3640 info
->flags
|= DF_STATIC_TLS
;
3644 case R_PPC_DTPMOD32
:
3645 case R_PPC_DTPREL32
:
3651 && (sec
->flags
& SEC_CODE
) != 0
3652 && (info
->shared
|| info
->pie
)
3653 && htab
->plt_type
== PLT_UNSET
)
3655 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3656 the start of a function, which assembles to a REL32
3657 reference to .got2. If we detect one of these, then
3658 force the old PLT layout because the linker cannot
3659 reliably deduce the GOT pointer value needed for
3663 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
3667 htab
->plt_type
= PLT_OLD
;
3668 htab
->old_bfd
= abfd
;
3671 if (h
== NULL
|| h
== htab
->elf
.hgot
)
3677 case R_PPC_ADDR16_LO
:
3678 case R_PPC_ADDR16_HI
:
3679 case R_PPC_ADDR16_HA
:
3682 if (h
!= NULL
&& !info
->shared
)
3684 /* We may need a plt entry if the symbol turns out to be
3685 a function defined in a dynamic object. */
3686 if (!update_plt_info (abfd
, h
, NULL
, 0))
3689 /* We may need a copy reloc too. */
3691 h
->pointer_equality_needed
= 1;
3697 case R_PPC_REL14_BRTAKEN
:
3698 case R_PPC_REL14_BRNTAKEN
:
3701 if (h
== htab
->elf
.hgot
)
3703 if (htab
->plt_type
== PLT_UNSET
)
3705 htab
->plt_type
= PLT_OLD
;
3706 htab
->old_bfd
= abfd
;
3714 case R_PPC_ADDR14_BRTAKEN
:
3715 case R_PPC_ADDR14_BRNTAKEN
:
3716 if (h
!= NULL
&& !info
->shared
)
3718 /* We may need a plt entry if the symbol turns out to be
3719 a function defined in a dynamic object. */
3720 if (!update_plt_info (abfd
, h
, NULL
, 0))
3726 /* If we are creating a shared library, and this is a reloc
3727 against a global symbol, or a non PC relative reloc
3728 against a local symbol, then we need to copy the reloc
3729 into the shared library. However, if we are linking with
3730 -Bsymbolic, we do not need to copy a reloc against a
3731 global symbol which is defined in an object we are
3732 including in the link (i.e., DEF_REGULAR is set). At
3733 this point we have not seen all the input files, so it is
3734 possible that DEF_REGULAR is not set now but will be set
3735 later (it is never cleared). In case of a weak definition,
3736 DEF_REGULAR may be cleared later by a strong definition in
3737 a shared library. We account for that possibility below by
3738 storing information in the dyn_relocs field of the hash
3739 table entry. A similar situation occurs when creating
3740 shared libraries and symbol visibility changes render the
3743 If on the other hand, we are creating an executable, we
3744 may need to keep relocations for symbols satisfied by a
3745 dynamic library if we manage to avoid copy relocs for the
3748 && (must_be_dyn_reloc (info
, r_type
)
3750 && (! info
->symbolic
3751 || h
->root
.type
== bfd_link_hash_defweak
3752 || !h
->def_regular
))))
3753 || (ELIMINATE_COPY_RELOCS
3756 && (h
->root
.type
== bfd_link_hash_defweak
3757 || !h
->def_regular
)))
3759 struct ppc_elf_dyn_relocs
*p
;
3760 struct ppc_elf_dyn_relocs
**head
;
3764 "ppc_elf_check_relocs needs to "
3765 "create relocation for %s\n",
3766 (h
&& h
->root
.root
.string
3767 ? h
->root
.root
.string
: "<unknown>"));
3773 name
= (bfd_elf_string_from_elf_section
3775 elf_elfheader (abfd
)->e_shstrndx
,
3776 elf_section_data (sec
)->rel_hdr
.sh_name
));
3780 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
3781 && strcmp (bfd_get_section_name (abfd
, sec
),
3784 if (htab
->elf
.dynobj
== NULL
)
3785 htab
->elf
.dynobj
= abfd
;
3786 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
3791 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
3792 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
3793 | SEC_ALLOC
| SEC_LOAD
);
3794 sreloc
= bfd_make_section_with_flags (htab
->elf
.dynobj
,
3798 || ! bfd_set_section_alignment (htab
->elf
.dynobj
,
3802 elf_section_data (sec
)->sreloc
= sreloc
;
3805 /* If this is a global symbol, we count the number of
3806 relocations we need for this symbol. */
3809 head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
3813 /* Track dynamic relocs needed for local syms too.
3814 We really need local syms available to do this
3820 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
3825 vpp
= &elf_section_data (s
)->local_dynrel
;
3826 head
= (struct ppc_elf_dyn_relocs
**) vpp
;
3830 if (p
== NULL
|| p
->sec
!= sec
)
3832 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
3843 if (!must_be_dyn_reloc (info
, r_type
))
3855 /* Merge object attributes from IBFD into OBFD. Raise an error if
3856 there are conflicting attributes. */
3858 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
3860 obj_attribute
*in_attr
, *in_attrs
;
3861 obj_attribute
*out_attr
, *out_attrs
;
3863 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
3865 /* This is the first object. Copy the attributes. */
3866 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
3868 /* Use the Tag_null value to indicate the attributes have been
3870 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
3875 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
3876 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
3878 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3879 non-conflicting ones. */
3880 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
3881 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
3882 if (in_attr
->i
!= out_attr
->i
)
3885 if (out_attr
->i
== 0)
3886 out_attr
->i
= in_attr
->i
;
3887 else if (in_attr
->i
== 0)
3889 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
3891 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
3892 else if (out_attr
->i
== 1 && in_attr
->i
== 3)
3894 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3896 else if (out_attr
->i
== 3 && in_attr
->i
== 1)
3898 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3900 else if (out_attr
->i
== 3 && in_attr
->i
== 2)
3902 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3904 else if (out_attr
->i
== 2 && (in_attr
->i
== 1 || in_attr
->i
== 3))
3906 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
3907 else if (in_attr
->i
> 3)
3909 (_("Warning: %B uses unknown floating point ABI %d"), ibfd
,
3913 (_("Warning: %B uses unknown floating point ABI %d"), obfd
,
3917 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3918 merge non-conflicting ones. */
3919 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
3920 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
3921 if (in_attr
->i
!= out_attr
->i
)
3923 const char *in_abi
= NULL
, *out_abi
= NULL
;
3927 case 1: in_abi
= "generic"; break;
3928 case 2: in_abi
= "AltiVec"; break;
3929 case 3: in_abi
= "SPE"; break;
3932 switch (out_attr
->i
)
3934 case 1: out_abi
= "generic"; break;
3935 case 2: out_abi
= "AltiVec"; break;
3936 case 3: out_abi
= "SPE"; break;
3940 if (out_attr
->i
== 0)
3941 out_attr
->i
= in_attr
->i
;
3942 else if (in_attr
->i
== 0)
3944 /* For now, allow generic to transition to AltiVec or SPE
3945 without a warning. If GCC marked files with their stack
3946 alignment and used don't-care markings for files which are
3947 not affected by the vector ABI, we could warn about this
3949 else if (out_attr
->i
== 1)
3950 out_attr
->i
= in_attr
->i
;
3951 else if (in_attr
->i
== 1)
3953 else if (in_abi
== NULL
)
3955 (_("Warning: %B uses unknown vector ABI %d"), ibfd
,
3957 else if (out_abi
== NULL
)
3959 (_("Warning: %B uses unknown vector ABI %d"), obfd
,
3963 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3964 ibfd
, obfd
, in_abi
, out_abi
);
3967 /* Merge Tag_compatibility attributes and any common GNU ones. */
3968 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
3973 /* Merge backend specific data from an object file to the output
3974 object file when linking. */
3977 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3983 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
3986 /* Check if we have the same endianess. */
3987 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
3990 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
3993 new_flags
= elf_elfheader (ibfd
)->e_flags
;
3994 old_flags
= elf_elfheader (obfd
)->e_flags
;
3995 if (!elf_flags_init (obfd
))
3997 /* First call, no flags set. */
3998 elf_flags_init (obfd
) = TRUE
;
3999 elf_elfheader (obfd
)->e_flags
= new_flags
;
4002 /* Compatible flags are ok. */
4003 else if (new_flags
== old_flags
)
4006 /* Incompatible flags. */
4009 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4010 to be linked with either. */
4012 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4013 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4016 (*_bfd_error_handler
)
4017 (_("%B: compiled with -mrelocatable and linked with "
4018 "modules compiled normally"), ibfd
);
4020 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4021 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4024 (*_bfd_error_handler
)
4025 (_("%B: compiled normally and linked with "
4026 "modules compiled with -mrelocatable"), ibfd
);
4029 /* The output is -mrelocatable-lib iff both the input files are. */
4030 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4031 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4033 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4034 but each input file is either -mrelocatable or -mrelocatable-lib. */
4035 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4036 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4037 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4038 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4040 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4041 any module uses it. */
4042 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4044 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4045 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4047 /* Warn about any other mismatches. */
4048 if (new_flags
!= old_flags
)
4051 (*_bfd_error_handler
)
4052 (_("%B: uses different e_flags (0x%lx) fields "
4053 "than previous modules (0x%lx)"),
4054 ibfd
, (long) new_flags
, (long) old_flags
);
4059 bfd_set_error (bfd_error_bad_value
);
4067 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4068 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4070 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4071 struct bfd_link_info
*info
,
4072 enum ppc_elf_plt_type plt_style
,
4075 struct ppc_elf_link_hash_table
*htab
;
4078 htab
= ppc_elf_hash_table (info
);
4080 if (htab
->plt_type
== PLT_UNSET
)
4082 if (plt_style
== PLT_OLD
)
4083 htab
->plt_type
= PLT_OLD
;
4087 enum ppc_elf_plt_type plt_type
= plt_style
;
4089 /* Look through the reloc flags left by ppc_elf_check_relocs.
4090 Use the old style bss plt if a file makes plt calls
4091 without using the new relocs, and if ld isn't given
4092 --secure-plt and we never see REL16 relocs. */
4093 if (plt_type
== PLT_UNSET
)
4095 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
4096 if (is_ppc_elf (ibfd
))
4098 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4100 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
4103 htab
->old_bfd
= ibfd
;
4107 htab
->plt_type
= plt_type
;
4110 if (htab
->plt_type
== PLT_OLD
&& plt_style
== PLT_NEW
)
4111 info
->callbacks
->info (_("Using bss-plt due to %B"), htab
->old_bfd
);
4113 htab
->emit_stub_syms
= emit_stub_syms
;
4115 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
4117 if (htab
->plt_type
== PLT_NEW
)
4119 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
4120 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4122 /* The new PLT is a loaded section. */
4123 if (htab
->plt
!= NULL
4124 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
4127 /* The new GOT is not executable. */
4128 if (htab
->got
!= NULL
4129 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
4134 /* Stop an unused .glink section from affecting .text alignment. */
4135 if (htab
->glink
!= NULL
4136 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
4139 return htab
->plt_type
== PLT_NEW
;
4142 /* Return the section that should be marked against GC for a given
4146 ppc_elf_gc_mark_hook (asection
*sec
,
4147 struct bfd_link_info
*info
,
4148 Elf_Internal_Rela
*rel
,
4149 struct elf_link_hash_entry
*h
,
4150 Elf_Internal_Sym
*sym
)
4153 switch (ELF32_R_TYPE (rel
->r_info
))
4155 case R_PPC_GNU_VTINHERIT
:
4156 case R_PPC_GNU_VTENTRY
:
4160 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
4163 /* Update the got, plt and dynamic reloc reference counts for the
4164 section being removed. */
4167 ppc_elf_gc_sweep_hook (bfd
*abfd
,
4168 struct bfd_link_info
*info
,
4170 const Elf_Internal_Rela
*relocs
)
4172 struct ppc_elf_link_hash_table
*htab
;
4173 Elf_Internal_Shdr
*symtab_hdr
;
4174 struct elf_link_hash_entry
**sym_hashes
;
4175 bfd_signed_vma
*local_got_refcounts
;
4176 const Elf_Internal_Rela
*rel
, *relend
;
4179 if (info
->relocatable
)
4182 if ((sec
->flags
& SEC_ALLOC
) == 0)
4185 elf_section_data (sec
)->local_dynrel
= NULL
;
4187 htab
= ppc_elf_hash_table (info
);
4188 symtab_hdr
= &elf_symtab_hdr (abfd
);
4189 sym_hashes
= elf_sym_hashes (abfd
);
4190 local_got_refcounts
= elf_local_got_refcounts (abfd
);
4191 got2
= bfd_get_section_by_name (abfd
, ".got2");
4193 relend
= relocs
+ sec
->reloc_count
;
4194 for (rel
= relocs
; rel
< relend
; rel
++)
4196 unsigned long r_symndx
;
4197 enum elf_ppc_reloc_type r_type
;
4198 struct elf_link_hash_entry
*h
= NULL
;
4200 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4201 if (r_symndx
>= symtab_hdr
->sh_info
)
4203 struct ppc_elf_dyn_relocs
**pp
, *p
;
4204 struct ppc_elf_link_hash_entry
*eh
;
4206 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4207 while (h
->root
.type
== bfd_link_hash_indirect
4208 || h
->root
.type
== bfd_link_hash_warning
)
4209 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4210 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4212 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4215 /* Everything must go for SEC. */
4221 r_type
= ELF32_R_TYPE (rel
->r_info
);
4224 case R_PPC_GOT_TLSLD16
:
4225 case R_PPC_GOT_TLSLD16_LO
:
4226 case R_PPC_GOT_TLSLD16_HI
:
4227 case R_PPC_GOT_TLSLD16_HA
:
4228 case R_PPC_GOT_TLSGD16
:
4229 case R_PPC_GOT_TLSGD16_LO
:
4230 case R_PPC_GOT_TLSGD16_HI
:
4231 case R_PPC_GOT_TLSGD16_HA
:
4232 case R_PPC_GOT_TPREL16
:
4233 case R_PPC_GOT_TPREL16_LO
:
4234 case R_PPC_GOT_TPREL16_HI
:
4235 case R_PPC_GOT_TPREL16_HA
:
4236 case R_PPC_GOT_DTPREL16
:
4237 case R_PPC_GOT_DTPREL16_LO
:
4238 case R_PPC_GOT_DTPREL16_HI
:
4239 case R_PPC_GOT_DTPREL16_HA
:
4241 case R_PPC_GOT16_LO
:
4242 case R_PPC_GOT16_HI
:
4243 case R_PPC_GOT16_HA
:
4246 if (h
->got
.refcount
> 0)
4249 else if (local_got_refcounts
!= NULL
)
4251 if (local_got_refcounts
[r_symndx
] > 0)
4252 local_got_refcounts
[r_symndx
]--;
4258 case R_PPC_REL14_BRTAKEN
:
4259 case R_PPC_REL14_BRNTAKEN
:
4261 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4268 case R_PPC_ADDR16_LO
:
4269 case R_PPC_ADDR16_HI
:
4270 case R_PPC_ADDR16_HA
:
4272 case R_PPC_ADDR14_BRTAKEN
:
4273 case R_PPC_ADDR14_BRNTAKEN
:
4280 case R_PPC_PLTREL24
:
4281 case R_PPC_PLTREL32
:
4282 case R_PPC_PLT16_LO
:
4283 case R_PPC_PLT16_HI
:
4284 case R_PPC_PLT16_HA
:
4287 bfd_vma addend
= r_type
== R_PPC_PLTREL24
? rel
->r_addend
: 0;
4288 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
4289 if (ent
->plt
.refcount
> 0)
4290 ent
->plt
.refcount
-= 1;
4301 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
4304 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
4306 struct ppc_elf_link_hash_table
*htab
;
4308 htab
= ppc_elf_hash_table (info
);
4309 if (htab
->plt_type
== PLT_NEW
4310 && htab
->plt
!= NULL
4311 && htab
->plt
->output_section
!= NULL
)
4313 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
4314 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
4317 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4318 FALSE
, FALSE
, TRUE
);
4319 return _bfd_elf_tls_setup (obfd
, info
);
4322 /* Run through all the TLS relocs looking for optimization
4326 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
4327 struct bfd_link_info
*info
)
4331 struct ppc_elf_link_hash_table
*htab
;
4334 if (info
->relocatable
|| !info
->executable
)
4337 htab
= ppc_elf_hash_table (info
);
4338 /* Make two passes through the relocs. First time check that tls
4339 relocs involved in setting up a tls_get_addr call are indeed
4340 followed by such a call. If they are not, exclude them from
4341 the optimizations done on the second pass. */
4342 for (pass
= 0; pass
< 2; ++pass
)
4343 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4345 Elf_Internal_Sym
*locsyms
= NULL
;
4346 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
4348 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4349 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
4351 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
4353 /* Read the relocations. */
4354 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
4356 if (relstart
== NULL
)
4359 relend
= relstart
+ sec
->reloc_count
;
4360 for (rel
= relstart
; rel
< relend
; rel
++)
4362 enum elf_ppc_reloc_type r_type
;
4363 unsigned long r_symndx
;
4364 struct elf_link_hash_entry
*h
= NULL
;
4366 char tls_set
, tls_clear
;
4367 bfd_boolean is_local
;
4368 int expecting_tls_get_addr
;
4369 bfd_signed_vma
*got_count
;
4371 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4372 if (r_symndx
>= symtab_hdr
->sh_info
)
4374 struct elf_link_hash_entry
**sym_hashes
;
4376 sym_hashes
= elf_sym_hashes (ibfd
);
4377 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4378 while (h
->root
.type
== bfd_link_hash_indirect
4379 || h
->root
.type
== bfd_link_hash_warning
)
4380 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4383 expecting_tls_get_addr
= 0;
4389 r_type
= ELF32_R_TYPE (rel
->r_info
);
4392 case R_PPC_GOT_TLSLD16
:
4393 case R_PPC_GOT_TLSLD16_LO
:
4394 expecting_tls_get_addr
= 1;
4397 case R_PPC_GOT_TLSLD16_HI
:
4398 case R_PPC_GOT_TLSLD16_HA
:
4399 /* These relocs should never be against a symbol
4400 defined in a shared lib. Leave them alone if
4401 that turns out to be the case. */
4410 case R_PPC_GOT_TLSGD16
:
4411 case R_PPC_GOT_TLSGD16_LO
:
4412 expecting_tls_get_addr
= 1;
4415 case R_PPC_GOT_TLSGD16_HI
:
4416 case R_PPC_GOT_TLSGD16_HA
:
4422 tls_set
= TLS_TLS
| TLS_TPRELGD
;
4426 case R_PPC_GOT_TPREL16
:
4427 case R_PPC_GOT_TPREL16_LO
:
4428 case R_PPC_GOT_TPREL16_HI
:
4429 case R_PPC_GOT_TPREL16_HA
:
4434 tls_clear
= TLS_TPREL
;
4446 if (!expecting_tls_get_addr
)
4449 if (rel
+ 1 < relend
)
4451 enum elf_ppc_reloc_type r_type2
;
4452 unsigned long r_symndx2
;
4453 struct elf_link_hash_entry
*h2
;
4455 /* The next instruction should be a call to
4456 __tls_get_addr. Peek at the reloc to be sure. */
4457 r_type2
= ELF32_R_TYPE (rel
[1].r_info
);
4458 r_symndx2
= ELF32_R_SYM (rel
[1].r_info
);
4459 if (r_symndx2
>= symtab_hdr
->sh_info
4460 && (r_type2
== R_PPC_REL14
4461 || r_type2
== R_PPC_REL14_BRTAKEN
4462 || r_type2
== R_PPC_REL14_BRNTAKEN
4463 || r_type2
== R_PPC_REL24
4464 || r_type2
== R_PPC_PLTREL24
))
4466 struct elf_link_hash_entry
**sym_hashes
;
4468 sym_hashes
= elf_sym_hashes (ibfd
);
4469 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
4470 while (h2
->root
.type
== bfd_link_hash_indirect
4471 || h2
->root
.type
== bfd_link_hash_warning
)
4472 h2
= ((struct elf_link_hash_entry
*)
4474 if (h2
== htab
->tls_get_addr
)
4479 /* Uh oh, we didn't find the expected call. We
4480 could just mark this symbol to exclude it
4481 from tls optimization but it's safer to skip
4482 the entire section. */
4483 sec
->has_tls_reloc
= 0;
4489 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
4490 got_count
= &h
->got
.refcount
;
4494 Elf_Internal_Sym
*sym
;
4495 bfd_signed_vma
*lgot_refs
;
4498 if (locsyms
== NULL
)
4500 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4501 if (locsyms
== NULL
)
4502 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
4503 symtab_hdr
->sh_info
,
4504 0, NULL
, NULL
, NULL
);
4505 if (locsyms
== NULL
)
4507 if (elf_section_data (sec
)->relocs
!= relstart
)
4512 sym
= locsyms
+ r_symndx
;
4513 lgot_refs
= elf_local_got_refcounts (ibfd
);
4514 if (lgot_refs
== NULL
)
4516 lgot_masks
= (char *) (lgot_refs
+ symtab_hdr
->sh_info
);
4517 tls_mask
= &lgot_masks
[r_symndx
];
4518 got_count
= &lgot_refs
[r_symndx
];
4523 /* We managed to get rid of a got entry. */
4528 if (expecting_tls_get_addr
)
4530 struct plt_entry
*ent
;
4532 ent
= find_plt_ent (htab
->tls_get_addr
, NULL
, 0);
4533 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
4534 ent
->plt
.refcount
-= 1;
4537 *tls_mask
|= tls_set
;
4538 *tls_mask
&= ~tls_clear
;
4541 if (elf_section_data (sec
)->relocs
!= relstart
)
4546 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
4548 if (!info
->keep_memory
)
4551 symtab_hdr
->contents
= (unsigned char *) locsyms
;
4557 /* Return true if we have dynamic relocs that apply to read-only sections. */
4560 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
4562 struct ppc_elf_dyn_relocs
*p
;
4564 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4566 asection
*s
= p
->sec
->output_section
;
4569 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
4570 == (SEC_READONLY
| SEC_ALLOC
)))
4576 /* Adjust a symbol defined by a dynamic object and referenced by a
4577 regular object. The current definition is in some section of the
4578 dynamic object, but we're not including those sections. We have to
4579 change the definition to something the rest of the link can
4583 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4584 struct elf_link_hash_entry
*h
)
4586 struct ppc_elf_link_hash_table
*htab
;
4590 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4591 h
->root
.root
.string
);
4594 /* Make sure we know what is going on here. */
4595 htab
= ppc_elf_hash_table (info
);
4596 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
4598 || h
->u
.weakdef
!= NULL
4601 && !h
->def_regular
)));
4603 /* Deal with function syms. */
4604 if (h
->type
== STT_FUNC
4607 /* Clear procedure linkage table information for any symbol that
4608 won't need a .plt entry. */
4609 struct plt_entry
*ent
;
4610 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4611 if (ent
->plt
.refcount
> 0)
4614 || SYMBOL_CALLS_LOCAL (info
, h
)
4615 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4616 && h
->root
.type
== bfd_link_hash_undefweak
))
4618 /* A PLT entry is not required/allowed when:
4620 1. We are not using ld.so; because then the PLT entry
4621 can't be set up, so we can't use one. In this case,
4622 ppc_elf_adjust_dynamic_symbol won't even be called.
4624 2. GC has rendered the entry unused.
4626 3. We know for certain that a call to this symbol
4627 will go to this object, or will remain undefined. */
4628 h
->plt
.plist
= NULL
;
4633 /* After adjust_dynamic_symbol, non_got_ref set means that
4634 dyn_relocs for this symbol should be discarded.
4635 If we get here we know we are making a PLT entry for this
4636 symbol, and in an executable we'd normally resolve
4637 relocations against this symbol to the PLT entry. Allow
4638 dynamic relocs if the reference is weak, and the dynamic
4639 relocs will not cause text relocation. */
4640 if (!h
->ref_regular_nonweak
4642 && !htab
->is_vxworks
4643 && !ppc_elf_hash_entry (h
)->has_sda_refs
4644 && !readonly_dynrelocs (h
))
4650 h
->plt
.plist
= NULL
;
4652 /* If this is a weak symbol, and there is a real definition, the
4653 processor independent code will have arranged for us to see the
4654 real definition first, and we can just use the same value. */
4655 if (h
->u
.weakdef
!= NULL
)
4657 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4658 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4659 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4660 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4661 if (ELIMINATE_COPY_RELOCS
)
4662 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
4666 /* This is a reference to a symbol defined by a dynamic object which
4667 is not a function. */
4669 /* If we are creating a shared library, we must presume that the
4670 only references to the symbol are via the global offset table.
4671 For such cases we need not do anything here; the relocations will
4672 be handled correctly by relocate_section. */
4676 /* If there are no references to this symbol that do not use the
4677 GOT, we don't need to generate a copy reloc. */
4678 if (!h
->non_got_ref
)
4681 /* If we didn't find any dynamic relocs in read-only sections, then
4682 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4683 We can't do this if there are any small data relocations. This
4684 doesn't work on VxWorks, where we can not have dynamic
4685 relocations (other than copy and jump slot relocations) in an
4687 if (ELIMINATE_COPY_RELOCS
4688 && !ppc_elf_hash_entry (h
)->has_sda_refs
4689 && !htab
->is_vxworks
4691 && !readonly_dynrelocs (h
))
4699 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
4700 h
->root
.root
.string
);
4704 /* We must allocate the symbol in our .dynbss section, which will
4705 become part of the .bss section of the executable. There will be
4706 an entry for this symbol in the .dynsym section. The dynamic
4707 object will contain position independent code, so all references
4708 from the dynamic object to this symbol will go through the global
4709 offset table. The dynamic linker will use the .dynsym entry to
4710 determine the address it must put in the global offset table, so
4711 both the dynamic object and the regular object will refer to the
4712 same memory location for the variable.
4714 Of course, if the symbol is referenced using SDAREL relocs, we
4715 must instead allocate it in .sbss. */
4717 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4721 BFD_ASSERT (s
!= NULL
);
4723 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4724 copy the initial value out of the dynamic object and into the
4725 runtime process image. We need to remember the offset into the
4726 .rela.bss section we are going to use. */
4727 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4731 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4732 srel
= htab
->relsbss
;
4734 srel
= htab
->relbss
;
4735 BFD_ASSERT (srel
!= NULL
);
4736 srel
->size
+= sizeof (Elf32_External_Rela
);
4740 return _bfd_elf_adjust_dynamic_copy (h
, s
);
4743 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4744 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4745 specifying the addend on the plt relocation. For -fpic code, the sym
4746 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4747 xxxxxxxx.got2.plt_pic32.<callee>. */
4750 add_stub_sym (struct plt_entry
*ent
,
4751 struct elf_link_hash_entry
*h
,
4752 struct bfd_link_info
*info
)
4754 struct elf_link_hash_entry
*sh
;
4755 size_t len1
, len2
, len3
;
4758 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
4760 if (info
->shared
|| info
->pie
)
4761 stub
= ".plt_pic32.";
4763 stub
= ".plt_call32.";
4765 len1
= strlen (h
->root
.root
.string
);
4766 len2
= strlen (stub
);
4769 len3
= strlen (ent
->sec
->name
);
4770 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
4773 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
4775 memcpy (name
+ 8, ent
->sec
->name
, len3
);
4776 memcpy (name
+ 8 + len3
, stub
, len2
);
4777 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
4778 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
4781 if (sh
->root
.type
== bfd_link_hash_new
)
4783 sh
->root
.type
= bfd_link_hash_defined
;
4784 sh
->root
.u
.def
.section
= htab
->glink
;
4785 sh
->root
.u
.def
.value
= ent
->glink_offset
;
4786 sh
->ref_regular
= 1;
4787 sh
->def_regular
= 1;
4788 sh
->ref_regular_nonweak
= 1;
4789 sh
->forced_local
= 1;
4795 /* Allocate NEED contiguous space in .got, and return the offset.
4796 Handles allocation of the got header when crossing 32k. */
4799 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
4802 unsigned int max_before_header
;
4804 if (htab
->plt_type
== PLT_VXWORKS
)
4806 where
= htab
->got
->size
;
4807 htab
->got
->size
+= need
;
4811 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
4812 if (need
<= htab
->got_gap
)
4814 where
= max_before_header
- htab
->got_gap
;
4815 htab
->got_gap
-= need
;
4819 if (htab
->got
->size
+ need
> max_before_header
4820 && htab
->got
->size
<= max_before_header
)
4822 htab
->got_gap
= max_before_header
- htab
->got
->size
;
4823 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
4825 where
= htab
->got
->size
;
4826 htab
->got
->size
+= need
;
4832 /* Allocate space in associated reloc sections for dynamic relocs. */
4835 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
4837 struct bfd_link_info
*info
= inf
;
4838 struct ppc_elf_link_hash_entry
*eh
;
4839 struct ppc_elf_link_hash_table
*htab
;
4840 struct ppc_elf_dyn_relocs
*p
;
4842 if (h
->root
.type
== bfd_link_hash_indirect
)
4845 if (h
->root
.type
== bfd_link_hash_warning
)
4846 /* When warning symbols are created, they **replace** the "real"
4847 entry in the hash table, thus we never get to see the real
4848 symbol in a hash traversal. So look at it now. */
4849 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4851 htab
= ppc_elf_hash_table (info
);
4852 if (htab
->elf
.dynamic_sections_created
)
4854 struct plt_entry
*ent
;
4855 bfd_boolean doneone
= FALSE
;
4856 bfd_vma plt_offset
= 0, glink_offset
= 0;
4858 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4859 if (ent
->plt
.refcount
> 0)
4861 /* Make sure this symbol is output as a dynamic symbol. */
4862 if (h
->dynindx
== -1
4863 && !h
->forced_local
)
4865 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4870 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
4872 asection
*s
= htab
->plt
;
4874 if (htab
->plt_type
== PLT_NEW
)
4878 plt_offset
= s
->size
;
4881 ent
->plt
.offset
= plt_offset
;
4884 if (!doneone
|| info
->shared
|| info
->pie
)
4886 glink_offset
= s
->size
;
4887 s
->size
+= GLINK_ENTRY_SIZE
;
4894 h
->root
.u
.def
.section
= s
;
4895 h
->root
.u
.def
.value
= glink_offset
;
4897 ent
->glink_offset
= glink_offset
;
4899 if (htab
->emit_stub_syms
4900 && !add_stub_sym (ent
, h
, info
))
4907 /* If this is the first .plt entry, make room
4908 for the special first entry. */
4910 s
->size
+= htab
->plt_initial_entry_size
;
4912 /* The PowerPC PLT is actually composed of two
4913 parts, the first part is 2 words (for a load
4914 and a jump), and then there is a remaining
4915 word available at the end. */
4916 plt_offset
= (htab
->plt_initial_entry_size
4917 + (htab
->plt_slot_size
4919 - htab
->plt_initial_entry_size
)
4920 / htab
->plt_entry_size
)));
4922 /* If this symbol is not defined in a regular
4923 file, and we are not generating a shared
4924 library, then set the symbol to this location
4925 in the .plt. This is required to make
4926 function pointers compare as equal between
4927 the normal executable and the shared library. */
4932 h
->root
.u
.def
.section
= s
;
4933 h
->root
.u
.def
.value
= plt_offset
;
4936 /* Make room for this entry. */
4937 s
->size
+= htab
->plt_entry_size
;
4938 /* After the 8192nd entry, room for two entries
4940 if (htab
->plt_type
== PLT_OLD
4941 && (s
->size
- htab
->plt_initial_entry_size
)
4942 / htab
->plt_entry_size
4943 > PLT_NUM_SINGLE_ENTRIES
)
4944 s
->size
+= htab
->plt_entry_size
;
4946 ent
->plt
.offset
= plt_offset
;
4949 /* We also need to make an entry in the .rela.plt section. */
4952 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
4954 if (htab
->plt_type
== PLT_VXWORKS
)
4956 /* Allocate space for the unloaded relocations. */
4960 == (bfd_vma
) htab
->plt_initial_entry_size
)
4962 htab
->srelplt2
->size
4963 += sizeof (Elf32_External_Rela
)
4964 * VXWORKS_PLTRESOLVE_RELOCS
;
4967 htab
->srelplt2
->size
4968 += sizeof (Elf32_External_Rela
)
4969 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
;
4972 /* Every PLT entry has an associated GOT entry in
4974 htab
->sgotplt
->size
+= 4;
4980 ent
->plt
.offset
= (bfd_vma
) -1;
4983 ent
->plt
.offset
= (bfd_vma
) -1;
4987 h
->plt
.plist
= NULL
;
4993 h
->plt
.plist
= NULL
;
4997 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4998 if (eh
->elf
.got
.refcount
> 0)
5000 /* Make sure this symbol is output as a dynamic symbol. */
5001 if (eh
->elf
.dynindx
== -1
5002 && !eh
->elf
.forced_local
5003 && htab
->elf
.dynamic_sections_created
)
5005 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
5009 if (eh
->tls_mask
== (TLS_TLS
| TLS_LD
)
5010 && !eh
->elf
.def_dynamic
)
5012 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
5013 htab
->tlsld_got
.refcount
+= 1;
5014 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5019 unsigned int need
= 0;
5020 if ((eh
->tls_mask
& TLS_TLS
) != 0)
5022 if ((eh
->tls_mask
& TLS_LD
) != 0)
5024 if ((eh
->tls_mask
& TLS_GD
) != 0)
5026 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5028 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
5033 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5034 dyn
= htab
->elf
.dynamic_sections_created
;
5036 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
5037 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
5038 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
5040 /* All the entries we allocated need relocs.
5041 Except LD only needs one. */
5042 if ((eh
->tls_mask
& TLS_LD
) != 0)
5044 htab
->relgot
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
5049 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5051 if (eh
->dyn_relocs
== NULL
5052 || !htab
->elf
.dynamic_sections_created
)
5055 /* In the shared -Bsymbolic case, discard space allocated for
5056 dynamic pc-relative relocs against symbols which turn out to be
5057 defined in regular objects. For the normal shared case, discard
5058 space for relocs that have become local due to symbol visibility
5063 /* Relocs that use pc_count are those that appear on a call insn,
5064 or certain REL relocs (see must_be_dyn_reloc) that can be
5065 generated via assembly. We want calls to protected symbols to
5066 resolve directly to the function rather than going via the plt.
5067 If people want function pointer comparisons to work as expected
5068 then they should avoid writing weird assembly. */
5069 if (SYMBOL_CALLS_LOCAL (info
, h
))
5071 struct ppc_elf_dyn_relocs
**pp
;
5073 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5075 p
->count
-= p
->pc_count
;
5084 if (htab
->is_vxworks
)
5086 struct ppc_elf_dyn_relocs
**pp
;
5088 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5090 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
5097 /* Discard relocs on undefined symbols that must be local. */
5098 if (eh
->dyn_relocs
!= NULL
5099 && h
->root
.type
== bfd_link_hash_undefined
5100 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
5101 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
5102 eh
->dyn_relocs
= NULL
;
5104 /* Also discard relocs on undefined weak syms with non-default
5106 if (eh
->dyn_relocs
!= NULL
5107 && h
->root
.type
== bfd_link_hash_undefweak
)
5109 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
5110 eh
->dyn_relocs
= NULL
;
5112 /* Make sure undefined weak symbols are output as a dynamic
5114 else if (h
->dynindx
== -1
5115 && !h
->forced_local
)
5117 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5122 else if (ELIMINATE_COPY_RELOCS
)
5124 /* For the non-shared case, discard space for relocs against
5125 symbols which turn out to need copy relocs or are not
5131 /* Make sure this symbol is output as a dynamic symbol.
5132 Undefined weak syms won't yet be marked as dynamic. */
5133 if (h
->dynindx
== -1
5134 && !h
->forced_local
)
5136 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5140 /* If that succeeded, we know we'll be keeping all the
5142 if (h
->dynindx
!= -1)
5146 eh
->dyn_relocs
= NULL
;
5151 /* Finally, allocate space. */
5152 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5154 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5155 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
5161 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5162 read-only sections. */
5165 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
5167 if (h
->root
.type
== bfd_link_hash_indirect
)
5170 if (h
->root
.type
== bfd_link_hash_warning
)
5171 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5173 if (readonly_dynrelocs (h
))
5175 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
5177 /* Not an error, just cut short the traversal. */
5183 /* Set the sizes of the dynamic sections. */
5186 ppc_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
5187 struct bfd_link_info
*info
)
5189 struct ppc_elf_link_hash_table
*htab
;
5195 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
5198 htab
= ppc_elf_hash_table (info
);
5199 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
5201 if (elf_hash_table (info
)->dynamic_sections_created
)
5203 /* Set the contents of the .interp section to the interpreter. */
5204 if (info
->executable
)
5206 s
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".interp");
5207 BFD_ASSERT (s
!= NULL
);
5208 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
5209 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
5213 if (htab
->plt_type
== PLT_OLD
)
5214 htab
->got_header_size
= 16;
5215 else if (htab
->plt_type
== PLT_NEW
)
5216 htab
->got_header_size
= 12;
5218 /* Set up .got offsets for local syms, and space for local dynamic
5220 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5222 bfd_signed_vma
*local_got
;
5223 bfd_signed_vma
*end_local_got
;
5225 bfd_size_type locsymcount
;
5226 Elf_Internal_Shdr
*symtab_hdr
;
5228 if (!is_ppc_elf (ibfd
))
5231 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
5233 struct ppc_elf_dyn_relocs
*p
;
5235 for (p
= ((struct ppc_elf_dyn_relocs
*)
5236 elf_section_data (s
)->local_dynrel
);
5240 if (!bfd_is_abs_section (p
->sec
)
5241 && bfd_is_abs_section (p
->sec
->output_section
))
5243 /* Input section has been discarded, either because
5244 it is a copy of a linkonce section or due to
5245 linker script /DISCARD/, so we'll be discarding
5248 else if (htab
->is_vxworks
5249 && strcmp (p
->sec
->output_section
->name
,
5252 /* Relocations in vxworks .tls_vars sections are
5253 handled specially by the loader. */
5255 else if (p
->count
!= 0)
5257 elf_section_data (p
->sec
)->sreloc
->size
5258 += p
->count
* sizeof (Elf32_External_Rela
);
5259 if ((p
->sec
->output_section
->flags
5260 & (SEC_READONLY
| SEC_ALLOC
))
5261 == (SEC_READONLY
| SEC_ALLOC
))
5262 info
->flags
|= DF_TEXTREL
;
5267 local_got
= elf_local_got_refcounts (ibfd
);
5271 symtab_hdr
= &elf_symtab_hdr (ibfd
);
5272 locsymcount
= symtab_hdr
->sh_info
;
5273 end_local_got
= local_got
+ locsymcount
;
5274 lgot_masks
= (char *) end_local_got
;
5275 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
5278 if (*lgot_masks
== (TLS_TLS
| TLS_LD
))
5280 /* If just an LD reloc, we'll just use
5281 htab->tlsld_got.offset. */
5282 htab
->tlsld_got
.refcount
+= 1;
5283 *local_got
= (bfd_vma
) -1;
5287 unsigned int need
= 0;
5288 if ((*lgot_masks
& TLS_TLS
) != 0)
5290 if ((*lgot_masks
& TLS_GD
) != 0)
5292 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5294 if ((*lgot_masks
& TLS_DTPREL
) != 0)
5299 *local_got
= allocate_got (htab
, need
);
5301 htab
->relgot
->size
+= (need
5302 * (sizeof (Elf32_External_Rela
) / 4));
5306 *local_got
= (bfd_vma
) -1;
5309 /* Allocate space for global sym dynamic relocs. */
5310 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
5312 if (htab
->tlsld_got
.refcount
> 0)
5314 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
5316 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
5319 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
5321 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
5323 unsigned int g_o_t
= 32768;
5325 /* If we haven't allocated the header, do so now. When we get here,
5326 for old plt/got the got size will be 0 to 32764 (not allocated),
5327 or 32780 to 65536 (header allocated). For new plt/got, the
5328 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5329 if (htab
->got
->size
<= 32768)
5331 g_o_t
= htab
->got
->size
;
5332 if (htab
->plt_type
== PLT_OLD
)
5334 htab
->got
->size
+= htab
->got_header_size
;
5337 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
5340 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
5342 htab
->glink_pltresolve
= htab
->glink
->size
;
5343 /* Space for the branch table. */
5344 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
5345 /* Pad out to align the start of PLTresolve. */
5346 htab
->glink
->size
+= -htab
->glink
->size
& 15;
5347 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
5349 if (htab
->emit_stub_syms
)
5351 struct elf_link_hash_entry
*sh
;
5352 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
5353 TRUE
, FALSE
, FALSE
);
5356 if (sh
->root
.type
== bfd_link_hash_new
)
5358 sh
->root
.type
= bfd_link_hash_defined
;
5359 sh
->root
.u
.def
.section
= htab
->glink
;
5360 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
5361 sh
->ref_regular
= 1;
5362 sh
->def_regular
= 1;
5363 sh
->ref_regular_nonweak
= 1;
5364 sh
->forced_local
= 1;
5367 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
5368 TRUE
, FALSE
, FALSE
);
5371 if (sh
->root
.type
== bfd_link_hash_new
)
5373 sh
->root
.type
= bfd_link_hash_defined
;
5374 sh
->root
.u
.def
.section
= htab
->glink
;
5375 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
5376 sh
->ref_regular
= 1;
5377 sh
->def_regular
= 1;
5378 sh
->ref_regular_nonweak
= 1;
5379 sh
->forced_local
= 1;
5385 /* We've now determined the sizes of the various dynamic sections.
5386 Allocate memory for them. */
5388 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5390 bfd_boolean strip_section
= TRUE
;
5392 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5398 || s
== htab
->sgotplt
5400 || s
== htab
->dynbss
5401 || s
== htab
->dynsbss
)
5403 /* We'd like to strip these sections if they aren't needed, but if
5404 we've exported dynamic symbols from them we must leave them.
5405 It's too late to tell BFD to get rid of the symbols. */
5406 if ((s
== htab
->plt
|| s
== htab
->got
) && htab
->elf
.hplt
!= NULL
)
5407 strip_section
= FALSE
;
5408 /* Strip this section if we don't need it; see the
5411 else if (s
== htab
->sdata
[0].section
5412 || s
== htab
->sdata
[1].section
)
5414 /* Strip these too. */
5416 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
5420 /* Remember whether there are any relocation sections. */
5423 /* We use the reloc_count field as a counter if we need
5424 to copy relocs into the output file. */
5430 /* It's not one of our sections, so don't allocate space. */
5434 if (s
->size
== 0 && strip_section
)
5436 /* If we don't need this section, strip it from the
5437 output file. This is mostly to handle .rela.bss and
5438 .rela.plt. We must create both sections in
5439 create_dynamic_sections, because they must be created
5440 before the linker maps input sections to output
5441 sections. The linker does that before
5442 adjust_dynamic_symbol is called, and it is that
5443 function which decides whether anything needs to go
5444 into these sections. */
5445 s
->flags
|= SEC_EXCLUDE
;
5449 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
5452 /* Allocate memory for the section contents. */
5453 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
5454 if (s
->contents
== NULL
)
5458 if (htab
->elf
.dynamic_sections_created
)
5460 /* Add some entries to the .dynamic section. We fill in the
5461 values later, in ppc_elf_finish_dynamic_sections, but we
5462 must add the entries now so that we get the correct size for
5463 the .dynamic section. The DT_DEBUG entry is filled in by the
5464 dynamic linker and used by the debugger. */
5465 #define add_dynamic_entry(TAG, VAL) \
5466 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5468 if (info
->executable
)
5470 if (!add_dynamic_entry (DT_DEBUG
, 0))
5474 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
5476 if (!add_dynamic_entry (DT_PLTGOT
, 0)
5477 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
5478 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
5479 || !add_dynamic_entry (DT_JMPREL
, 0))
5483 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
5485 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
5491 if (!add_dynamic_entry (DT_RELA
, 0)
5492 || !add_dynamic_entry (DT_RELASZ
, 0)
5493 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
5497 /* If any dynamic relocs apply to a read-only section, then we
5498 need a DT_TEXTREL entry. */
5499 if ((info
->flags
& DF_TEXTREL
) == 0)
5500 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
5503 if ((info
->flags
& DF_TEXTREL
) != 0)
5505 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5508 if (htab
->is_vxworks
5509 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
5512 #undef add_dynamic_entry
5517 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5520 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
5522 if (h
->plt
.plist
!= NULL
5524 && (!h
->pointer_equality_needed
5525 || !h
->ref_regular_nonweak
))
5528 return _bfd_elf_hash_symbol (h
);
5531 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5533 static const int shared_stub_entry
[] =
5535 0x7c0802a6, /* mflr 0 */
5536 0x429f0005, /* bcl 20, 31, .Lxxx */
5537 0x7d6802a6, /* mflr 11 */
5538 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5539 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5540 0x7c0803a6, /* mtlr 0 */
5541 0x7d6903a6, /* mtctr 11 */
5542 0x4e800420, /* bctr */
5545 static const int stub_entry
[] =
5547 0x3d600000, /* lis 11,xxx@ha */
5548 0x396b0000, /* addi 11,11,xxx@l */
5549 0x7d6903a6, /* mtctr 11 */
5550 0x4e800420, /* bctr */
5554 ppc_elf_relax_section (bfd
*abfd
,
5556 struct bfd_link_info
*link_info
,
5561 struct one_fixup
*next
;
5567 Elf_Internal_Shdr
*symtab_hdr
;
5568 bfd_byte
*contents
= NULL
;
5569 Elf_Internal_Sym
*isymbuf
= NULL
;
5570 Elf_Internal_Rela
*internal_relocs
= NULL
;
5571 Elf_Internal_Rela
*irel
, *irelend
;
5572 struct one_fixup
*fixups
= NULL
;
5573 bfd_boolean changed
;
5574 struct ppc_elf_link_hash_table
*htab
;
5575 bfd_size_type trampoff
;
5580 /* Nothing to do if there are no relocations, and no need to do
5581 anything with non-alloc sections. */
5582 if ((isec
->flags
& SEC_ALLOC
) == 0
5583 || (isec
->flags
& SEC_RELOC
) == 0
5584 || isec
->reloc_count
== 0)
5587 trampoff
= (isec
->size
+ 3) & (bfd_vma
) -4;
5588 /* Space for a branch around any trampolines. */
5591 symtab_hdr
= &elf_symtab_hdr (abfd
);
5593 /* Get a copy of the native relocations. */
5594 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
5595 link_info
->keep_memory
);
5596 if (internal_relocs
== NULL
)
5599 htab
= ppc_elf_hash_table (link_info
);
5600 got2
= bfd_get_section_by_name (abfd
, ".got2");
5602 irelend
= internal_relocs
+ isec
->reloc_count
;
5603 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
5605 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
5606 bfd_vma symaddr
, reladdr
, toff
, roff
;
5608 struct one_fixup
*f
;
5609 size_t insn_offset
= 0;
5610 bfd_vma max_branch_offset
, val
;
5613 unsigned char sym_type
;
5618 case R_PPC_LOCAL24PC
:
5619 case R_PPC_PLTREL24
:
5620 max_branch_offset
= 1 << 25;
5624 case R_PPC_REL14_BRTAKEN
:
5625 case R_PPC_REL14_BRNTAKEN
:
5626 max_branch_offset
= 1 << 15;
5633 /* Get the value of the symbol referred to by the reloc. */
5634 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
5636 /* A local symbol. */
5637 Elf_Internal_Sym
*isym
;
5639 /* Read this BFD's local symbols. */
5640 if (isymbuf
== NULL
)
5642 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5643 if (isymbuf
== NULL
)
5644 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
5645 symtab_hdr
->sh_info
, 0,
5650 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
5651 if (isym
->st_shndx
== SHN_UNDEF
)
5652 continue; /* We can't do anything with undefined symbols. */
5653 else if (isym
->st_shndx
== SHN_ABS
)
5654 tsec
= bfd_abs_section_ptr
;
5655 else if (isym
->st_shndx
== SHN_COMMON
)
5656 tsec
= bfd_com_section_ptr
;
5658 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5660 toff
= isym
->st_value
;
5661 sym_type
= ELF_ST_TYPE (isym
->st_info
);
5665 /* Global symbol handling. */
5667 struct elf_link_hash_entry
*h
;
5669 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
5670 h
= elf_sym_hashes (abfd
)[indx
];
5672 while (h
->root
.type
== bfd_link_hash_indirect
5673 || h
->root
.type
== bfd_link_hash_warning
)
5674 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5678 if (r_type
== R_PPC_PLTREL24
5679 && htab
->plt
!= NULL
)
5681 struct plt_entry
*ent
= find_plt_ent (h
, got2
, irel
->r_addend
);
5685 if (htab
->plt_type
== PLT_NEW
)
5688 toff
= ent
->glink_offset
;
5693 toff
= ent
->plt
.offset
;
5699 else if (h
->root
.type
== bfd_link_hash_defined
5700 || h
->root
.type
== bfd_link_hash_defweak
)
5702 tsec
= h
->root
.u
.def
.section
;
5703 toff
= h
->root
.u
.def
.value
;
5711 /* If the branch and target are in the same section, you have
5712 no hope of adding stubs. We'll error out later should the
5717 /* There probably isn't any reason to handle symbols in
5718 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5719 attribute for a code section, and we are only looking at
5720 branches. However, implement it correctly here as a
5721 reference for other target relax_section functions. */
5722 if (0 && tsec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
5724 /* At this stage in linking, no SEC_MERGE symbol has been
5725 adjusted, so all references to such symbols need to be
5726 passed through _bfd_merged_section_offset. (Later, in
5727 relocate_section, all SEC_MERGE symbols *except* for
5728 section symbols have been adjusted.)
5730 gas may reduce relocations against symbols in SEC_MERGE
5731 sections to a relocation against the section symbol when
5732 the original addend was zero. When the reloc is against
5733 a section symbol we should include the addend in the
5734 offset passed to _bfd_merged_section_offset, since the
5735 location of interest is the original symbol. On the
5736 other hand, an access to "sym+addend" where "sym" is not
5737 a section symbol should not include the addend; Such an
5738 access is presumed to be an offset from "sym"; The
5739 location of interest is just "sym". */
5740 if (sym_type
== STT_SECTION
)
5741 toff
+= irel
->r_addend
;
5743 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
5744 elf_section_data (tsec
)->sec_info
,
5747 if (sym_type
!= STT_SECTION
)
5748 toff
+= irel
->r_addend
;
5750 /* PLTREL24 addends are special. */
5751 else if (r_type
!= R_PPC_PLTREL24
)
5752 toff
+= irel
->r_addend
;
5754 /* Attempted -shared link of non-pic code loses. */
5755 if (tsec
->output_section
== NULL
)
5758 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
5760 roff
= irel
->r_offset
;
5761 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
5763 /* If the branch is in range, no need to do anything. */
5764 if (symaddr
- reladdr
+ max_branch_offset
< 2 * max_branch_offset
)
5767 /* Look for an existing fixup to this address. */
5768 for (f
= fixups
; f
; f
= f
->next
)
5769 if (f
->tsec
== tsec
&& f
->toff
== toff
)
5775 unsigned long stub_rtype
;
5777 val
= trampoff
- roff
;
5778 if (val
>= max_branch_offset
)
5779 /* Oh dear, we can't reach a trampoline. Don't try to add
5780 one. We'll report an error later. */
5783 if (link_info
->shared
)
5785 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
5787 stub_rtype
= R_PPC_RELAX32PC
;
5791 size
= 4 * ARRAY_SIZE (stub_entry
);
5793 stub_rtype
= R_PPC_RELAX32
;
5796 if (R_PPC_RELAX32_PLT
- R_PPC_RELAX32
5797 != R_PPC_RELAX32PC_PLT
- R_PPC_RELAX32PC
)
5799 if (tsec
== htab
->plt
5800 || tsec
== htab
->glink
)
5801 stub_rtype
+= R_PPC_RELAX32_PLT
- R_PPC_RELAX32
;
5803 /* Hijack the old relocation. Since we need two
5804 relocations for this use a "composite" reloc. */
5805 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
5807 irel
->r_offset
= trampoff
+ insn_offset
;
5808 if (r_type
== R_PPC_PLTREL24
)
5811 /* Record the fixup so we don't do it again this section. */
5812 f
= bfd_malloc (sizeof (*f
));
5816 f
->trampoff
= trampoff
;
5823 val
= f
->trampoff
- roff
;
5824 if (val
>= max_branch_offset
)
5827 /* Nop out the reloc, since we're finalizing things here. */
5828 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
5831 /* Get the section contents. */
5832 if (contents
== NULL
)
5834 /* Get cached copy if it exists. */
5835 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
5836 contents
= elf_section_data (isec
)->this_hdr
.contents
;
5839 /* Go get them off disk. */
5840 if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
5845 /* Fix up the existing branch to hit the trampoline. */
5846 hit_addr
= contents
+ roff
;
5850 case R_PPC_LOCAL24PC
:
5851 case R_PPC_PLTREL24
:
5852 t0
= bfd_get_32 (abfd
, hit_addr
);
5854 t0
|= val
& 0x3fffffc;
5855 bfd_put_32 (abfd
, t0
, hit_addr
);
5859 case R_PPC_REL14_BRTAKEN
:
5860 case R_PPC_REL14_BRNTAKEN
:
5861 t0
= bfd_get_32 (abfd
, hit_addr
);
5864 bfd_put_32 (abfd
, t0
, hit_addr
);
5869 /* Write out the trampolines. */
5870 changed
= fixups
!= NULL
;
5880 struct one_fixup
*f
= fixups
;
5881 fixups
= fixups
->next
;
5886 contents
= bfd_realloc_or_free (contents
, trampoff
);
5887 if (contents
== NULL
)
5890 isec
->size
= (isec
->size
+ 3) & (bfd_vma
) -4;
5891 /* Branch around the trampolines. */
5892 val
= B
+ trampoff
- isec
->size
;
5893 dest
= contents
+ isec
->size
;
5894 isec
->size
= trampoff
;
5895 bfd_put_32 (abfd
, val
, dest
);
5898 if (link_info
->shared
)
5900 stub
= shared_stub_entry
;
5901 size
= ARRAY_SIZE (shared_stub_entry
);
5906 size
= ARRAY_SIZE (stub_entry
);
5910 while (dest
< contents
+ trampoff
)
5912 bfd_put_32 (abfd
, stub
[i
], dest
);
5918 BFD_ASSERT (i
== 0);
5922 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5924 if (! link_info
->keep_memory
)
5928 /* Cache the symbols for elf_link_input_bfd. */
5929 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
5933 if (contents
!= NULL
5934 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
5936 if (!changed
&& !link_info
->keep_memory
)
5940 /* Cache the section contents for elf_link_input_bfd. */
5941 elf_section_data (isec
)->this_hdr
.contents
= contents
;
5945 if (elf_section_data (isec
)->relocs
!= internal_relocs
)
5948 free (internal_relocs
);
5950 elf_section_data (isec
)->relocs
= internal_relocs
;
5957 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
5959 if (contents
!= NULL
5960 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
5962 if (internal_relocs
!= NULL
5963 && elf_section_data (isec
)->relocs
!= internal_relocs
)
5964 free (internal_relocs
);
5968 /* What to do when ld finds relocations against symbols defined in
5969 discarded sections. */
5972 ppc_elf_action_discarded (asection
*sec
)
5974 if (strcmp (".fixup", sec
->name
) == 0)
5977 if (strcmp (".got2", sec
->name
) == 0)
5980 return _bfd_elf_default_action_discarded (sec
);
5983 /* Fill in the address for a pointer generated in a linker section. */
5986 elf_finish_pointer_linker_section (bfd
*input_bfd
,
5987 elf_linker_section_t
*lsect
,
5988 struct elf_link_hash_entry
*h
,
5990 const Elf_Internal_Rela
*rel
)
5992 elf_linker_section_pointers_t
*linker_section_ptr
;
5994 BFD_ASSERT (lsect
!= NULL
);
5998 /* Handle global symbol. */
5999 struct ppc_elf_link_hash_entry
*eh
;
6001 eh
= (struct ppc_elf_link_hash_entry
*) h
;
6002 BFD_ASSERT (eh
->elf
.def_regular
);
6003 linker_section_ptr
= eh
->linker_section_pointer
;
6007 /* Handle local symbol. */
6008 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
6010 BFD_ASSERT (is_ppc_elf (input_bfd
));
6011 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
6012 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
6015 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
6018 BFD_ASSERT (linker_section_ptr
!= NULL
);
6020 /* Offset will always be a multiple of four, so use the bottom bit
6021 as a "written" flag. */
6022 if ((linker_section_ptr
->offset
& 1) == 0)
6024 bfd_put_32 (lsect
->section
->owner
,
6025 relocation
+ linker_section_ptr
->addend
,
6026 lsect
->section
->contents
+ linker_section_ptr
->offset
);
6027 linker_section_ptr
->offset
+= 1;
6030 relocation
= (lsect
->section
->output_offset
6031 + linker_section_ptr
->offset
- 1
6036 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6037 lsect
->name
, (long) relocation
, (long) relocation
);
6040 /* Subtract out the addend, because it will get added back in by the normal
6042 return relocation
- linker_section_ptr
->addend
;
6045 /* The RELOCATE_SECTION function is called by the ELF backend linker
6046 to handle the relocations for a section.
6048 The relocs are always passed as Rela structures; if the section
6049 actually uses Rel structures, the r_addend field will always be
6052 This function is responsible for adjust the section contents as
6053 necessary, and (if using Rela relocs and generating a
6054 relocatable output file) adjusting the reloc addend as
6057 This function does not have to worry about setting the reloc
6058 address or the reloc symbol index.
6060 LOCAL_SYMS is a pointer to the swapped in local symbols.
6062 LOCAL_SECTIONS is an array giving the section in the input file
6063 corresponding to the st_shndx field of each local symbol.
6065 The global hash table entry for the global symbols can be found
6066 via elf_sym_hashes (input_bfd).
6068 When generating relocatable output, this function must handle
6069 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6070 going to be the section symbol corresponding to the output
6071 section, which means that the addend must be adjusted
6075 ppc_elf_relocate_section (bfd
*output_bfd
,
6076 struct bfd_link_info
*info
,
6078 asection
*input_section
,
6080 Elf_Internal_Rela
*relocs
,
6081 Elf_Internal_Sym
*local_syms
,
6082 asection
**local_sections
)
6084 Elf_Internal_Shdr
*symtab_hdr
;
6085 struct elf_link_hash_entry
**sym_hashes
;
6086 struct ppc_elf_link_hash_table
*htab
;
6087 Elf_Internal_Rela
*rel
;
6088 Elf_Internal_Rela
*relend
;
6089 Elf_Internal_Rela outrel
;
6091 asection
*got2
, *sreloc
= NULL
;
6092 bfd_vma
*local_got_offsets
;
6093 bfd_boolean ret
= TRUE
;
6094 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
6095 bfd_boolean is_vxworks_tls
;
6098 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6099 "%ld relocations%s",
6100 input_bfd
, input_section
,
6101 (long) input_section
->reloc_count
,
6102 (info
->relocatable
) ? " (relocatable)" : "");
6105 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
6107 /* Initialize howto table if not already done. */
6108 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
6109 ppc_elf_howto_init ();
6111 htab
= ppc_elf_hash_table (info
);
6112 local_got_offsets
= elf_local_got_offsets (input_bfd
);
6113 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
6114 sym_hashes
= elf_sym_hashes (input_bfd
);
6115 /* We have to handle relocations in vxworks .tls_vars sections
6116 specially, because the dynamic loader is 'weird'. */
6117 is_vxworks_tls
= (htab
->is_vxworks
&& info
->shared
6118 && !strcmp (input_section
->output_section
->name
,
6121 relend
= relocs
+ input_section
->reloc_count
;
6122 for (; rel
< relend
; rel
++)
6124 enum elf_ppc_reloc_type r_type
;
6126 bfd_reloc_status_type r
;
6127 Elf_Internal_Sym
*sym
;
6129 struct elf_link_hash_entry
*h
;
6130 const char *sym_name
;
6131 reloc_howto_type
*howto
;
6132 unsigned long r_symndx
;
6134 bfd_vma branch_bit
, insn
, from
;
6135 bfd_boolean unresolved_reloc
;
6137 unsigned int tls_type
, tls_mask
, tls_gd
;
6139 r_type
= ELF32_R_TYPE (rel
->r_info
);
6143 unresolved_reloc
= FALSE
;
6145 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6147 if (r_symndx
< symtab_hdr
->sh_info
)
6149 sym
= local_syms
+ r_symndx
;
6150 sec
= local_sections
[r_symndx
];
6151 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
6153 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6157 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6158 r_symndx
, symtab_hdr
, sym_hashes
,
6160 unresolved_reloc
, warned
);
6162 sym_name
= h
->root
.root
.string
;
6165 if (sec
!= NULL
&& elf_discarded_section (sec
))
6167 /* For relocs against symbols from removed linkonce sections,
6168 or sections discarded by a linker script, we just want the
6169 section contents zeroed. Avoid any special processing. */
6171 if (r_type
< R_PPC_max
)
6172 howto
= ppc_elf_howto_table
[r_type
];
6173 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
6179 if (info
->relocatable
)
6182 && r_type
== R_PPC_PLTREL24
6183 && rel
->r_addend
>= 32768)
6185 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6186 addend specifies the GOT pointer offset within .got2. */
6187 rel
->r_addend
+= got2
->output_offset
;
6192 /* TLS optimizations. Replace instruction sequences and relocs
6193 based on information we collected in tls_optimize. We edit
6194 RELOCS so that --emit-relocs will output something sensible
6195 for the final instruction stream. */
6198 if (IS_PPC_TLS_RELOC (r_type
))
6201 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
6202 else if (local_got_offsets
!= NULL
)
6205 lgot_masks
= (char *) (local_got_offsets
+ symtab_hdr
->sh_info
);
6206 tls_mask
= lgot_masks
[r_symndx
];
6210 /* Ensure reloc mapping code below stays sane. */
6211 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
6212 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
6213 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
6214 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
6215 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
6216 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
6217 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
6218 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
6225 case R_PPC_GOT_TPREL16
:
6226 case R_PPC_GOT_TPREL16_LO
:
6228 && (tls_mask
& TLS_TPREL
) == 0)
6231 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
6233 insn
|= 0x3c020000; /* addis 0,2,0 */
6234 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
6235 r_type
= R_PPC_TPREL16_HA
;
6236 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6242 && (tls_mask
& TLS_TPREL
) == 0)
6245 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6246 if ((insn
& ((31 << 26) | (31 << 11)))
6247 == ((31 << 26) | (2 << 11)))
6248 rtra
= insn
& ((1 << 26) - (1 << 16));
6249 else if ((insn
& ((31 << 26) | (31 << 16)))
6250 == ((31 << 26) | (2 << 16)))
6251 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
6254 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
6257 else if ((insn
& (31 << 1)) == 23 << 1
6258 && ((insn
& (31 << 6)) < 14 << 6
6259 || ((insn
& (31 << 6)) >= 16 << 6
6260 && (insn
& (31 << 6)) < 24 << 6)))
6261 /* load and store indexed -> dform. */
6262 insn
= (32 | ((insn
>> 6) & 31)) << 26;
6263 else if ((insn
& (31 << 1)) == 21 << 1
6264 && (insn
& (0x1a << 6)) == 0)
6265 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6266 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
6267 | ((insn
>> 6) & 1));
6268 else if ((insn
& (31 << 1)) == 21 << 1
6269 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
6271 insn
= (58 << 26) | 2;
6275 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6276 r_type
= R_PPC_TPREL16_LO
;
6277 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6279 /* Was PPC_TLS which sits on insn boundary, now
6280 PPC_TPREL16_LO which is at low-order half-word. */
6281 rel
->r_offset
+= d_offset
;
6285 case R_PPC_GOT_TLSGD16_HI
:
6286 case R_PPC_GOT_TLSGD16_HA
:
6287 tls_gd
= TLS_TPRELGD
;
6288 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
6292 case R_PPC_GOT_TLSLD16_HI
:
6293 case R_PPC_GOT_TLSLD16_HA
:
6294 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
6297 if ((tls_mask
& tls_gd
) != 0)
6298 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
6299 + R_PPC_GOT_TPREL16
);
6302 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
6303 rel
->r_offset
-= d_offset
;
6304 r_type
= R_PPC_NONE
;
6306 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6310 case R_PPC_GOT_TLSGD16
:
6311 case R_PPC_GOT_TLSGD16_LO
:
6312 tls_gd
= TLS_TPRELGD
;
6313 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
6317 case R_PPC_GOT_TLSLD16
:
6318 case R_PPC_GOT_TLSLD16_LO
:
6319 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
6321 bfd_vma insn1
, insn2
;
6325 offset
= rel
[1].r_offset
;
6326 insn1
= bfd_get_32 (output_bfd
,
6327 contents
+ rel
->r_offset
- d_offset
);
6328 if ((tls_mask
& tls_gd
) != 0)
6331 insn1
&= (1 << 26) - 1;
6332 insn1
|= 32 << 26; /* lwz */
6333 insn2
= 0x7c631214; /* add 3,3,2 */
6335 = ELF32_R_INFO (ELF32_R_SYM (rel
[1].r_info
), R_PPC_NONE
);
6336 rel
[1].r_addend
= 0;
6337 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
6338 + R_PPC_GOT_TPREL16
);
6339 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6344 insn1
= 0x3c620000; /* addis 3,2,0 */
6345 insn2
= 0x38630000; /* addi 3,3,0 */
6348 /* Was an LD reloc. */
6350 r_symndx
< symtab_hdr
->sh_info
;
6352 if (local_sections
[r_symndx
] == sec
)
6354 if (r_symndx
>= symtab_hdr
->sh_info
)
6356 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6358 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
6359 + sec
->output_offset
6360 + sec
->output_section
->vma
);
6362 r_type
= R_PPC_TPREL16_HA
;
6363 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6364 rel
[1].r_info
= ELF32_R_INFO (r_symndx
,
6366 rel
[1].r_offset
+= d_offset
;
6367 rel
[1].r_addend
= rel
->r_addend
;
6369 bfd_put_32 (output_bfd
, insn1
,
6370 contents
+ rel
->r_offset
- d_offset
);
6371 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
6374 /* We changed the symbol on an LD reloc. Start over
6375 in order to get h, sym, sec etc. right. */
6383 /* Handle other relocations that tweak non-addend part of insn. */
6390 /* Branch taken prediction relocations. */
6391 case R_PPC_ADDR14_BRTAKEN
:
6392 case R_PPC_REL14_BRTAKEN
:
6393 branch_bit
= BRANCH_PREDICT_BIT
;
6396 /* Branch not taken prediction relocations. */
6397 case R_PPC_ADDR14_BRNTAKEN
:
6398 case R_PPC_REL14_BRNTAKEN
:
6399 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6400 insn
&= ~BRANCH_PREDICT_BIT
;
6403 from
= (rel
->r_offset
6404 + input_section
->output_offset
6405 + input_section
->output_section
->vma
);
6407 /* Invert 'y' bit if not the default. */
6408 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
6409 insn
^= BRANCH_PREDICT_BIT
;
6411 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6415 addend
= rel
->r_addend
;
6418 if (r_type
< R_PPC_max
)
6419 howto
= ppc_elf_howto_table
[r_type
];
6423 (*_bfd_error_handler
)
6424 (_("%B: unknown relocation type %d for symbol %s"),
6425 input_bfd
, (int) r_type
, sym_name
);
6427 bfd_set_error (bfd_error_bad_value
);
6433 case R_PPC_EMB_MRKREF
:
6434 case R_PPC_GNU_VTINHERIT
:
6435 case R_PPC_GNU_VTENTRY
:
6438 /* GOT16 relocations. Like an ADDR16 using the symbol's
6439 address in the GOT as relocation value instead of the
6440 symbol's value itself. Also, create a GOT entry for the
6441 symbol and put the symbol value there. */
6442 case R_PPC_GOT_TLSGD16
:
6443 case R_PPC_GOT_TLSGD16_LO
:
6444 case R_PPC_GOT_TLSGD16_HI
:
6445 case R_PPC_GOT_TLSGD16_HA
:
6446 tls_type
= TLS_TLS
| TLS_GD
;
6449 case R_PPC_GOT_TLSLD16
:
6450 case R_PPC_GOT_TLSLD16_LO
:
6451 case R_PPC_GOT_TLSLD16_HI
:
6452 case R_PPC_GOT_TLSLD16_HA
:
6453 tls_type
= TLS_TLS
| TLS_LD
;
6456 case R_PPC_GOT_TPREL16
:
6457 case R_PPC_GOT_TPREL16_LO
:
6458 case R_PPC_GOT_TPREL16_HI
:
6459 case R_PPC_GOT_TPREL16_HA
:
6460 tls_type
= TLS_TLS
| TLS_TPREL
;
6463 case R_PPC_GOT_DTPREL16
:
6464 case R_PPC_GOT_DTPREL16_LO
:
6465 case R_PPC_GOT_DTPREL16_HI
:
6466 case R_PPC_GOT_DTPREL16_HA
:
6467 tls_type
= TLS_TLS
| TLS_DTPREL
;
6471 case R_PPC_GOT16_LO
:
6472 case R_PPC_GOT16_HI
:
6473 case R_PPC_GOT16_HA
:
6476 /* Relocation is to the entry for this symbol in the global
6482 if (htab
->got
== NULL
)
6486 if (tls_type
== (TLS_TLS
| TLS_LD
)
6488 || !h
->def_dynamic
))
6489 offp
= &htab
->tlsld_got
.offset
;
6493 dyn
= htab
->elf
.dynamic_sections_created
;
6494 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
6496 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
6497 /* This is actually a static link, or it is a
6498 -Bsymbolic link and the symbol is defined
6499 locally, or the symbol was forced to be local
6500 because of a version file. */
6505 unresolved_reloc
= FALSE
;
6507 offp
= &h
->got
.offset
;
6511 if (local_got_offsets
== NULL
)
6513 offp
= &local_got_offsets
[r_symndx
];
6516 /* The offset must always be a multiple of 4. We use the
6517 least significant bit to record whether we have already
6518 processed this entry. */
6524 unsigned int tls_m
= (tls_mask
6525 & (TLS_LD
| TLS_GD
| TLS_DTPREL
6526 | TLS_TPREL
| TLS_TPRELGD
));
6528 if (offp
== &htab
->tlsld_got
.offset
)
6534 /* We might have multiple got entries for this sym.
6535 Initialize them all. */
6540 if ((tls_m
& TLS_LD
) != 0)
6542 tls_ty
= TLS_TLS
| TLS_LD
;
6545 else if ((tls_m
& TLS_GD
) != 0)
6547 tls_ty
= TLS_TLS
| TLS_GD
;
6550 else if ((tls_m
& TLS_DTPREL
) != 0)
6552 tls_ty
= TLS_TLS
| TLS_DTPREL
;
6553 tls_m
&= ~TLS_DTPREL
;
6555 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6557 tls_ty
= TLS_TLS
| TLS_TPREL
;
6561 /* Generate relocs for the dynamic linker. */
6562 if ((info
->shared
|| indx
!= 0)
6564 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6565 || h
->root
.type
!= bfd_link_hash_undefweak
))
6567 outrel
.r_offset
= (htab
->got
->output_section
->vma
6568 + htab
->got
->output_offset
6570 outrel
.r_addend
= 0;
6571 if (tls_ty
& (TLS_LD
| TLS_GD
))
6573 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
6574 if (tls_ty
== (TLS_TLS
| TLS_GD
))
6576 loc
= htab
->relgot
->contents
;
6577 loc
+= (htab
->relgot
->reloc_count
++
6578 * sizeof (Elf32_External_Rela
));
6579 bfd_elf32_swap_reloca_out (output_bfd
,
6581 outrel
.r_offset
+= 4;
6583 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
6586 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
6587 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
6588 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
6589 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
6591 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_RELATIVE
);
6593 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
6596 outrel
.r_addend
+= relocation
;
6597 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
6598 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
6600 loc
= htab
->relgot
->contents
;
6601 loc
+= (htab
->relgot
->reloc_count
++
6602 * sizeof (Elf32_External_Rela
));
6603 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
6606 /* Init the .got section contents if we're not
6607 emitting a reloc. */
6610 bfd_vma value
= relocation
;
6612 if (tls_ty
== (TLS_TLS
| TLS_LD
))
6614 else if (tls_ty
!= 0)
6616 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6617 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
6618 value
+= DTP_OFFSET
- TP_OFFSET
;
6620 if (tls_ty
== (TLS_TLS
| TLS_GD
))
6622 bfd_put_32 (output_bfd
, value
,
6623 htab
->got
->contents
+ off
+ 4);
6627 bfd_put_32 (output_bfd
, value
,
6628 htab
->got
->contents
+ off
);
6632 if (tls_ty
& (TLS_LD
| TLS_GD
))
6641 if (off
>= (bfd_vma
) -2)
6644 if ((tls_type
& TLS_TLS
) != 0)
6646 if (tls_type
!= (TLS_TLS
| TLS_LD
))
6648 if ((tls_mask
& TLS_LD
) != 0
6650 || !h
->def_dynamic
))
6652 if (tls_type
!= (TLS_TLS
| TLS_GD
))
6654 if ((tls_mask
& TLS_GD
) != 0)
6656 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
6658 if ((tls_mask
& TLS_DTPREL
) != 0)
6665 relocation
= (htab
->got
->output_section
->vma
6666 + htab
->got
->output_offset
6668 - SYM_VAL (htab
->elf
.hgot
));
6670 /* Addends on got relocations don't make much sense.
6671 x+off@got is actually x@got+off, and since the got is
6672 generated by a hash table traversal, the value in the
6673 got at entry m+n bears little relation to the entry m. */
6675 (*_bfd_error_handler
)
6676 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6679 (long) rel
->r_offset
,
6685 /* Relocations that need no special processing. */
6686 case R_PPC_LOCAL24PC
:
6687 /* It makes no sense to point a local relocation
6688 at a symbol not in this object. */
6689 if (unresolved_reloc
)
6691 if (! (*info
->callbacks
->undefined_symbol
) (info
,
6692 h
->root
.root
.string
,
6702 case R_PPC_DTPREL16
:
6703 case R_PPC_DTPREL16_LO
:
6704 case R_PPC_DTPREL16_HI
:
6705 case R_PPC_DTPREL16_HA
:
6706 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6709 /* Relocations that may need to be propagated if this is a shared
6712 case R_PPC_TPREL16_LO
:
6713 case R_PPC_TPREL16_HI
:
6714 case R_PPC_TPREL16_HA
:
6715 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
6716 /* The TPREL16 relocs shouldn't really be used in shared
6717 libs as they will result in DT_TEXTREL being set, but
6718 support them anyway. */
6722 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
6725 case R_PPC_DTPREL32
:
6726 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6729 case R_PPC_DTPMOD32
:
6735 case R_PPC_REL16_LO
:
6736 case R_PPC_REL16_HI
:
6737 case R_PPC_REL16_HA
:
6741 if (h
== NULL
|| h
== htab
->elf
.hgot
)
6747 case R_PPC_ADDR16_LO
:
6748 case R_PPC_ADDR16_HI
:
6749 case R_PPC_ADDR16_HA
:
6756 case R_PPC_REL14_BRTAKEN
:
6757 case R_PPC_REL14_BRNTAKEN
:
6758 /* If these relocations are not to a named symbol, they can be
6759 handled right here, no need to bother the dynamic linker. */
6760 if (SYMBOL_CALLS_LOCAL (info
, h
)
6761 || h
== htab
->elf
.hgot
)
6767 case R_PPC_ADDR14_BRTAKEN
:
6768 case R_PPC_ADDR14_BRNTAKEN
:
6769 if (h
!= NULL
&& !info
->shared
)
6774 if ((input_section
->flags
& SEC_ALLOC
) == 0
6780 && ((h
->root
.type
== bfd_link_hash_undefined
6781 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
6782 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
6783 || (h
->root
.type
== bfd_link_hash_undefweak
6784 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)))
6785 && (must_be_dyn_reloc (info
, r_type
)
6786 || !SYMBOL_CALLS_LOCAL (info
, h
)))
6787 || (ELIMINATE_COPY_RELOCS
6792 && !h
->def_regular
))
6797 fprintf (stderr
, "ppc_elf_relocate_section needs to "
6798 "create relocation for %s\n",
6799 (h
&& h
->root
.root
.string
6800 ? h
->root
.root
.string
: "<unknown>"));
6803 /* When generating a shared object, these relocations
6804 are copied into the output file to be resolved at run
6810 name
= (bfd_elf_string_from_elf_section
6812 elf_elfheader (input_bfd
)->e_shstrndx
,
6813 elf_section_data (input_section
)->rel_hdr
.sh_name
));
6817 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
6818 && strcmp (bfd_get_section_name (input_bfd
,
6822 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
6823 BFD_ASSERT (sreloc
!= NULL
);
6828 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
6830 if (outrel
.r_offset
== (bfd_vma
) -1
6831 || outrel
.r_offset
== (bfd_vma
) -2)
6832 skip
= (int) outrel
.r_offset
;
6833 outrel
.r_offset
+= (input_section
->output_section
->vma
6834 + input_section
->output_offset
);
6837 memset (&outrel
, 0, sizeof outrel
);
6839 && (h
->root
.type
== bfd_link_hash_undefined
6840 || h
->root
.type
== bfd_link_hash_undefweak
))
6841 || !SYMBOL_REFERENCES_LOCAL (info
, h
))
6843 unresolved_reloc
= FALSE
;
6844 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
6845 outrel
.r_addend
= rel
->r_addend
;
6849 outrel
.r_addend
= relocation
+ rel
->r_addend
;
6851 if (r_type
== R_PPC_ADDR32
)
6852 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
6857 if (r_symndx
== 0 || bfd_is_abs_section (sec
))
6859 else if (sec
== NULL
|| sec
->owner
== NULL
)
6861 bfd_set_error (bfd_error_bad_value
);
6868 /* We are turning this relocation into one
6869 against a section symbol. It would be
6870 proper to subtract the symbol's value,
6871 osec->vma, from the emitted reloc addend,
6872 but ld.so expects buggy relocs. */
6873 osec
= sec
->output_section
;
6874 indx
= elf_section_data (osec
)->dynindx
;
6877 osec
= htab
->elf
.text_index_section
;
6878 indx
= elf_section_data (osec
)->dynindx
;
6880 BFD_ASSERT (indx
!= 0);
6883 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6884 indx
, osec
->name
, osec
->flags
,
6885 h
->root
.root
.string
);
6889 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
6893 loc
= sreloc
->contents
;
6894 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6895 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
6900 /* This reloc will be computed at runtime. We clear the memory
6901 so that it contains predictable value. */
6903 && ((input_section
->flags
& SEC_ALLOC
) != 0
6904 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
6906 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
6913 case R_PPC_RELAX32PC_PLT
:
6914 case R_PPC_RELAX32_PLT
:
6916 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
6918 if (htab
->plt_type
== PLT_NEW
)
6919 relocation
= (htab
->glink
->output_section
->vma
6920 + htab
->glink
->output_offset
6921 + ent
->glink_offset
);
6923 relocation
= (htab
->plt
->output_section
->vma
6924 + htab
->plt
->output_offset
6927 if (r_type
== R_PPC_RELAX32_PLT
)
6931 case R_PPC_RELAX32PC
:
6932 relocation
-= (input_section
->output_section
->vma
6933 + input_section
->output_offset
6934 + rel
->r_offset
- 4);
6943 t0
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6944 t1
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
+ 4);
6946 /* We're clearing the bits for R_PPC_ADDR16_HA
6947 and R_PPC_ADDR16_LO here. */
6951 /* t0 is HA, t1 is LO */
6952 relocation
+= addend
;
6953 t0
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
6954 t1
|= relocation
& 0xffff;
6956 bfd_put_32 (output_bfd
, t0
, contents
+ rel
->r_offset
);
6957 bfd_put_32 (output_bfd
, t1
, contents
+ rel
->r_offset
+ 4);
6961 /* Indirect .sdata relocation. */
6962 case R_PPC_EMB_SDAI16
:
6963 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
6965 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
6966 h
, relocation
, rel
);
6969 /* Indirect .sdata2 relocation. */
6970 case R_PPC_EMB_SDA2I16
:
6971 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
6973 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
6974 h
, relocation
, rel
);
6977 /* Handle the TOC16 reloc. We want to use the offset within the .got
6978 section, not the actual VMA. This is appropriate when generating
6979 an embedded ELF object, for which the .got section acts like the
6980 AIX .toc section. */
6981 case R_PPC_TOC16
: /* phony GOT16 relocations */
6982 if (sec
== NULL
|| sec
->output_section
== NULL
)
6984 unresolved_reloc
= TRUE
;
6987 BFD_ASSERT (strcmp (bfd_get_section_name (abfd
, sec
), ".got") == 0
6988 || strcmp (bfd_get_section_name (abfd
, sec
), ".cgot") == 0);
6990 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
6993 case R_PPC_PLTREL24
:
6994 /* Relocation is to the entry for this symbol in the
6995 procedure linkage table. */
6997 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
7001 || htab
->plt
== NULL
)
7003 /* We didn't make a PLT entry for this symbol. This
7004 happens when statically linking PIC code, or when
7005 using -Bsymbolic. */
7009 unresolved_reloc
= FALSE
;
7010 if (htab
->plt_type
== PLT_NEW
)
7011 relocation
= (htab
->glink
->output_section
->vma
7012 + htab
->glink
->output_offset
7013 + ent
->glink_offset
);
7015 relocation
= (htab
->plt
->output_section
->vma
7016 + htab
->plt
->output_offset
7021 /* Relocate against _SDA_BASE_. */
7022 case R_PPC_SDAREL16
:
7026 if (sec
== NULL
|| sec
->output_section
== NULL
)
7028 unresolved_reloc
= TRUE
;
7032 name
= bfd_get_section_name (abfd
, sec
->output_section
);
7033 if (! ((CONST_STRNEQ (name
, ".sdata")
7034 && (name
[6] == 0 || name
[6] == '.'))
7035 || (CONST_STRNEQ (name
, ".sbss")
7036 && (name
[5] == 0 || name
[5] == '.'))))
7038 (*_bfd_error_handler
)
7039 (_("%B: the target (%s) of a %s relocation is "
7040 "in the wrong output section (%s)"),
7046 addend
-= SYM_VAL (htab
->sdata
[0].sym
);
7050 /* Relocate against _SDA2_BASE_. */
7051 case R_PPC_EMB_SDA2REL
:
7055 if (sec
== NULL
|| sec
->output_section
== NULL
)
7057 unresolved_reloc
= TRUE
;
7061 name
= bfd_get_section_name (abfd
, sec
->output_section
);
7062 if (! (CONST_STRNEQ (name
, ".sdata2")
7063 || CONST_STRNEQ (name
, ".sbss2")))
7065 (*_bfd_error_handler
)
7066 (_("%B: the target (%s) of a %s relocation is "
7067 "in the wrong output section (%s)"),
7073 bfd_set_error (bfd_error_bad_value
);
7077 addend
-= SYM_VAL (htab
->sdata
[1].sym
);
7081 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7082 case R_PPC_EMB_SDA21
:
7083 case R_PPC_EMB_RELSDA
:
7088 if (sec
== NULL
|| sec
->output_section
== NULL
)
7090 unresolved_reloc
= TRUE
;
7094 name
= bfd_get_section_name (abfd
, sec
->output_section
);
7095 if (((CONST_STRNEQ (name
, ".sdata")
7096 && (name
[6] == 0 || name
[6] == '.'))
7097 || (CONST_STRNEQ (name
, ".sbss")
7098 && (name
[5] == 0 || name
[5] == '.'))))
7101 addend
-= SYM_VAL (htab
->sdata
[0].sym
);
7103 else if (CONST_STRNEQ (name
, ".sdata2")
7104 || CONST_STRNEQ (name
, ".sbss2"))
7107 addend
-= SYM_VAL (htab
->sdata
[1].sym
);
7109 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
7110 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
7116 (*_bfd_error_handler
)
7117 (_("%B: the target (%s) of a %s relocation is "
7118 "in the wrong output section (%s)"),
7124 bfd_set_error (bfd_error_bad_value
);
7129 if (r_type
== R_PPC_EMB_SDA21
)
7130 { /* fill in register field */
7131 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7132 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
7133 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7138 /* Relocate against the beginning of the section. */
7140 case R_PPC_SECTOFF_LO
:
7141 case R_PPC_SECTOFF_HI
:
7142 case R_PPC_SECTOFF_HA
:
7143 if (sec
== NULL
|| sec
->output_section
== NULL
)
7145 unresolved_reloc
= TRUE
;
7148 addend
-= sec
->output_section
->vma
;
7151 /* Negative relocations. */
7152 case R_PPC_EMB_NADDR32
:
7153 case R_PPC_EMB_NADDR16
:
7154 case R_PPC_EMB_NADDR16_LO
:
7155 case R_PPC_EMB_NADDR16_HI
:
7156 case R_PPC_EMB_NADDR16_HA
:
7157 addend
-= 2 * relocation
;
7161 case R_PPC_GLOB_DAT
:
7162 case R_PPC_JMP_SLOT
:
7163 case R_PPC_RELATIVE
:
7165 case R_PPC_PLTREL32
:
7166 case R_PPC_PLT16_LO
:
7167 case R_PPC_PLT16_HI
:
7168 case R_PPC_PLT16_HA
:
7170 case R_PPC_EMB_RELSEC16
:
7171 case R_PPC_EMB_RELST_LO
:
7172 case R_PPC_EMB_RELST_HI
:
7173 case R_PPC_EMB_RELST_HA
:
7174 case R_PPC_EMB_BIT_FLD
:
7175 (*_bfd_error_handler
)
7176 (_("%B: relocation %s is not yet supported for symbol %s."),
7181 bfd_set_error (bfd_error_invalid_operation
);
7186 /* Do any further special processing. */
7192 case R_PPC_ADDR16_HA
:
7193 case R_PPC_REL16_HA
:
7194 case R_PPC_SECTOFF_HA
:
7195 case R_PPC_TPREL16_HA
:
7196 case R_PPC_DTPREL16_HA
:
7197 case R_PPC_EMB_NADDR16_HA
:
7198 case R_PPC_EMB_RELST_HA
:
7199 /* It's just possible that this symbol is a weak symbol
7200 that's not actually defined anywhere. In that case,
7201 'sec' would be NULL, and we should leave the symbol
7202 alone (it will be set to zero elsewhere in the link). */
7207 case R_PPC_PLT16_HA
:
7208 case R_PPC_GOT16_HA
:
7209 case R_PPC_GOT_TLSGD16_HA
:
7210 case R_PPC_GOT_TLSLD16_HA
:
7211 case R_PPC_GOT_TPREL16_HA
:
7212 case R_PPC_GOT_DTPREL16_HA
:
7213 /* Add 0x10000 if sign bit in 0:15 is set.
7214 Bits 0:15 are not used. */
7220 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7221 "offset = %ld, addend = %ld\n",
7226 (long) rel
->r_offset
,
7230 if (unresolved_reloc
7231 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
7234 (*_bfd_error_handler
)
7235 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7238 (long) rel
->r_offset
,
7244 r
= _bfd_final_link_relocate (howto
,
7252 if (r
!= bfd_reloc_ok
)
7254 if (r
== bfd_reloc_overflow
)
7259 && h
->root
.type
== bfd_link_hash_undefweak
7260 && howto
->pc_relative
)
7262 /* Assume this is a call protected by other code that
7263 detect the symbol is undefined. If this is the case,
7264 we can safely ignore the overflow. If not, the
7265 program is hosed anyway, and a little warning isn't
7271 if (! (*info
->callbacks
->reloc_overflow
) (info
,
7272 (h
? &h
->root
: NULL
),
7283 (*_bfd_error_handler
)
7284 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7285 input_bfd
, input_section
,
7286 (long) rel
->r_offset
, howto
->name
, sym_name
, (int) r
);
7293 fprintf (stderr
, "\n");
7299 #define PPC_LO(v) ((v) & 0xffff)
7300 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7301 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7303 /* Finish up dynamic symbol handling. We set the contents of various
7304 dynamic sections here. */
7307 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
7308 struct bfd_link_info
*info
,
7309 struct elf_link_hash_entry
*h
,
7310 Elf_Internal_Sym
*sym
)
7312 struct ppc_elf_link_hash_table
*htab
;
7313 struct plt_entry
*ent
;
7314 bfd_boolean doneone
;
7317 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
7318 h
->root
.root
.string
);
7321 htab
= ppc_elf_hash_table (info
);
7322 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
7325 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7326 if (ent
->plt
.offset
!= (bfd_vma
) -1)
7330 Elf_Internal_Rela rela
;
7332 bfd_vma reloc_index
;
7334 if (htab
->plt_type
== PLT_NEW
)
7335 reloc_index
= ent
->plt
.offset
/ 4;
7338 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
7339 / htab
->plt_slot_size
);
7340 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
7341 && htab
->plt_type
== PLT_OLD
)
7342 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
7345 /* This symbol has an entry in the procedure linkage table.
7347 if (htab
->plt_type
== PLT_VXWORKS
)
7350 const bfd_vma
*plt_entry
;
7352 /* The first three entries in .got.plt are reserved. */
7353 got_offset
= (reloc_index
+ 3) * 4;
7355 /* Use the right PLT. */
7356 plt_entry
= info
->shared
? ppc_elf_vxworks_pic_plt_entry
7357 : ppc_elf_vxworks_plt_entry
;
7359 /* Fill in the .plt on VxWorks. */
7362 bfd_put_32 (output_bfd
,
7363 plt_entry
[0] | PPC_HA (got_offset
),
7364 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
7365 bfd_put_32 (output_bfd
,
7366 plt_entry
[1] | PPC_LO (got_offset
),
7367 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
7371 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
7373 bfd_put_32 (output_bfd
,
7374 plt_entry
[0] | PPC_HA (got_loc
),
7375 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
7376 bfd_put_32 (output_bfd
,
7377 plt_entry
[1] | PPC_LO (got_loc
),
7378 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
7381 bfd_put_32 (output_bfd
, plt_entry
[2],
7382 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
7383 bfd_put_32 (output_bfd
, plt_entry
[3],
7384 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
7386 /* This instruction is an immediate load. The value loaded is
7387 the byte offset of the R_PPC_JMP_SLOT relocation from the
7388 start of the .rela.plt section. The value is stored in the
7389 low-order 16 bits of the load instruction. */
7390 /* NOTE: It appears that this is now an index rather than a
7391 prescaled offset. */
7392 bfd_put_32 (output_bfd
,
7393 plt_entry
[4] | reloc_index
,
7394 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
7395 /* This instruction is a PC-relative branch whose target is
7396 the start of the PLT section. The address of this branch
7397 instruction is 20 bytes beyond the start of this PLT entry.
7398 The address is encoded in bits 6-29, inclusive. The value
7399 stored is right-shifted by two bits, permitting a 26-bit
7401 bfd_put_32 (output_bfd
,
7403 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
7404 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
7405 bfd_put_32 (output_bfd
, plt_entry
[6],
7406 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
7407 bfd_put_32 (output_bfd
, plt_entry
[7],
7408 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
7410 /* Fill in the GOT entry corresponding to this PLT slot with
7411 the address immediately after the the "bctr" instruction
7412 in this PLT entry. */
7413 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
7414 + htab
->plt
->output_offset
7415 + ent
->plt
.offset
+ 16),
7416 htab
->sgotplt
->contents
+ got_offset
);
7420 /* Fill in a couple of entries in .rela.plt.unloaded. */
7421 loc
= htab
->srelplt2
->contents
7422 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
7423 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
7424 * sizeof (Elf32_External_Rela
));
7426 /* Provide the @ha relocation for the first instruction. */
7427 rela
.r_offset
= (htab
->plt
->output_section
->vma
7428 + htab
->plt
->output_offset
7429 + ent
->plt
.offset
+ 2);
7430 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
7432 rela
.r_addend
= got_offset
;
7433 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7434 loc
+= sizeof (Elf32_External_Rela
);
7436 /* Provide the @l relocation for the second instruction. */
7437 rela
.r_offset
= (htab
->plt
->output_section
->vma
7438 + htab
->plt
->output_offset
7439 + ent
->plt
.offset
+ 6);
7440 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
7442 rela
.r_addend
= got_offset
;
7443 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7444 loc
+= sizeof (Elf32_External_Rela
);
7446 /* Provide a relocation for the GOT entry corresponding to this
7447 PLT slot. Point it at the middle of the .plt entry. */
7448 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
7449 + htab
->sgotplt
->output_offset
7451 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
7453 rela
.r_addend
= ent
->plt
.offset
+ 16;
7454 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7457 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7458 In particular, the offset for the relocation is not the
7459 address of the PLT entry for this function, as specified
7460 by the ABI. Instead, the offset is set to the address of
7461 the GOT slot for this function. See EABI 4.4.4.1. */
7462 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
7463 + htab
->sgotplt
->output_offset
7469 rela
.r_offset
= (htab
->plt
->output_section
->vma
7470 + htab
->plt
->output_offset
7472 if (htab
->plt_type
== PLT_OLD
)
7474 /* We don't need to fill in the .plt. The ppc dynamic
7475 linker will fill it in. */
7479 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
7480 + htab
->glink
->output_section
->vma
7481 + htab
->glink
->output_offset
);
7482 bfd_put_32 (output_bfd
, val
,
7483 htab
->plt
->contents
+ ent
->plt
.offset
);
7487 /* Fill in the entry in the .rela.plt section. */
7488 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
7491 loc
= (htab
->relplt
->contents
7492 + reloc_index
* sizeof (Elf32_External_Rela
));
7493 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7495 if (!h
->def_regular
)
7497 /* Mark the symbol as undefined, rather than as
7498 defined in the .plt section. Leave the value if
7499 there were any relocations where pointer equality
7500 matters (this is a clue for the dynamic linker, to
7501 make function pointer comparisons work between an
7502 application and shared library), otherwise set it
7504 sym
->st_shndx
= SHN_UNDEF
;
7505 if (!h
->pointer_equality_needed
)
7507 else if (!h
->ref_regular_nonweak
)
7509 /* This breaks function pointer comparisons, but
7510 that is better than breaking tests for a NULL
7511 function pointer. */
7518 if (htab
->plt_type
== PLT_NEW
)
7523 plt
= (ent
->plt
.offset
7524 + htab
->plt
->output_section
->vma
7525 + htab
->plt
->output_offset
);
7526 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
7528 if (info
->shared
|| info
->pie
)
7532 if (ent
->addend
>= 32768)
7534 + ent
->sec
->output_section
->vma
7535 + ent
->sec
->output_offset
);
7536 else if (htab
->elf
.hgot
!= NULL
)
7537 got
= SYM_VAL (htab
->elf
.hgot
);
7541 if (plt
+ 0x8000 < 0x10000)
7543 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7545 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7547 bfd_put_32 (output_bfd
, BCTR
, p
);
7549 bfd_put_32 (output_bfd
, NOP
, p
);
7554 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7556 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7558 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7560 bfd_put_32 (output_bfd
, BCTR
, p
);
7566 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7568 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7570 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7572 bfd_put_32 (output_bfd
, BCTR
, p
);
7575 /* We only need one non-PIC glink stub. */
7586 Elf_Internal_Rela rela
;
7589 /* This symbols needs a copy reloc. Set it up. */
7592 fprintf (stderr
, ", copy");
7595 BFD_ASSERT (h
->dynindx
!= -1);
7597 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
7601 BFD_ASSERT (s
!= NULL
);
7603 rela
.r_offset
= SYM_VAL (h
);
7604 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
7606 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
7607 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7611 fprintf (stderr
, "\n");
7614 /* Mark some specially defined symbols as absolute. */
7615 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
7616 || (!htab
->is_vxworks
7617 && (h
== htab
->elf
.hgot
7618 || strcmp (h
->root
.root
.string
,
7619 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7620 sym
->st_shndx
= SHN_ABS
;
7625 static enum elf_reloc_type_class
7626 ppc_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
7628 switch (ELF32_R_TYPE (rela
->r_info
))
7630 case R_PPC_RELATIVE
:
7631 return reloc_class_relative
;
7634 case R_PPC_JMP_SLOT
:
7635 return reloc_class_plt
;
7637 return reloc_class_copy
;
7639 return reloc_class_normal
;
7643 /* Finish up the dynamic sections. */
7646 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
7647 struct bfd_link_info
*info
)
7651 struct ppc_elf_link_hash_table
*htab
;
7654 bfd_boolean ret
= TRUE
;
7657 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
7660 htab
= ppc_elf_hash_table (info
);
7661 dynobj
= elf_hash_table (info
)->dynobj
;
7662 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
7663 if (htab
->is_vxworks
)
7664 splt
= bfd_get_section_by_name (dynobj
, ".plt");
7669 if (htab
->elf
.hgot
!= NULL
)
7670 got
= SYM_VAL (htab
->elf
.hgot
);
7672 if (htab
->elf
.dynamic_sections_created
)
7674 Elf32_External_Dyn
*dyncon
, *dynconend
;
7676 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
7678 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
7679 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
7680 for (; dyncon
< dynconend
; dyncon
++)
7682 Elf_Internal_Dyn dyn
;
7685 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
7690 if (htab
->is_vxworks
)
7694 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
7698 dyn
.d_un
.d_val
= htab
->relplt
->size
;
7703 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
7707 dyn
.d_un
.d_ptr
= got
;
7711 if (htab
->is_vxworks
)
7714 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
7720 if (htab
->is_vxworks
7721 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
7726 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
7730 if (htab
->got
!= NULL
)
7732 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->got
7733 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->sgotplt
)
7735 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
7737 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
7738 if (htab
->plt_type
== PLT_OLD
)
7740 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
7741 so that a function can easily find the address of
7742 _GLOBAL_OFFSET_TABLE_. */
7743 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
7744 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
7745 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
7750 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
7751 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
7752 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
7753 bfd_put_32 (output_bfd
, val
, p
);
7758 (*_bfd_error_handler
) (_("%s not defined in linker created %s"),
7759 htab
->elf
.hgot
->root
.root
.string
,
7760 (htab
->sgotplt
!= NULL
7761 ? htab
->sgotplt
->name
: htab
->got
->name
));
7762 bfd_set_error (bfd_error_bad_value
);
7766 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
7769 /* Fill in the first entry in the VxWorks procedure linkage table. */
7770 if (splt
&& splt
->size
> 0)
7772 /* Use the right PLT. */
7773 static const bfd_vma
*plt_entry
= NULL
;
7774 plt_entry
= info
->shared
?
7775 ppc_elf_vxworks_pic_plt0_entry
: ppc_elf_vxworks_plt0_entry
;
7779 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
7781 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
7782 splt
->contents
+ 0);
7783 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
7784 splt
->contents
+ 4);
7788 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
7789 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
7791 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
7792 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
7793 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
7794 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
7795 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
7796 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
7800 Elf_Internal_Rela rela
;
7803 loc
= htab
->srelplt2
->contents
;
7805 /* Output the @ha relocation for the first instruction. */
7806 rela
.r_offset
= (htab
->plt
->output_section
->vma
7807 + htab
->plt
->output_offset
7809 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
7811 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7812 loc
+= sizeof (Elf32_External_Rela
);
7814 /* Output the @l relocation for the second instruction. */
7815 rela
.r_offset
= (htab
->plt
->output_section
->vma
7816 + htab
->plt
->output_offset
7818 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
7820 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7821 loc
+= sizeof (Elf32_External_Rela
);
7823 /* Fix up the remaining relocations. They may have the wrong
7824 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7825 in which symbols were output. */
7826 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
7828 Elf_Internal_Rela rel
;
7830 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7831 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
7832 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7833 loc
+= sizeof (Elf32_External_Rela
);
7835 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7836 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
7837 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7838 loc
+= sizeof (Elf32_External_Rela
);
7840 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7841 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
7842 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7843 loc
+= sizeof (Elf32_External_Rela
);
7848 if (htab
->glink
!= NULL
&& htab
->glink
->contents
!= NULL
)
7851 unsigned char *endp
;
7856 * PIC glink code is the following:
7858 * # ith PLT code stub.
7859 * addis 11,30,(plt+(i-1)*4-got)@ha
7860 * lwz 11,(plt+(i-1)*4-got)@l(11)
7864 * # A table of branches, one for each plt entry.
7865 * # The idea is that the plt call stub loads ctr and r11 with these
7866 * # addresses, so (r11 - res_0) gives the plt index * 4.
7867 * res_0: b PLTresolve
7868 * res_1: b PLTresolve
7870 * # Some number of entries towards the end can be nops
7876 * addis 11,11,(1f-res_0)@ha
7879 * 1: addi 11,11,(1b-res_0)@l
7882 * sub 11,11,12 # r11 = index * 4
7883 * addis 12,12,(got+4-1b)@ha
7884 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7885 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7888 * add 11,0,11 # r11 = index * 12 = reloc offset.
7891 static const unsigned int pic_plt_resolve
[] =
7912 * Non-PIC glink code is a little simpler.
7914 * # ith PLT code stub.
7915 * lis 11,(plt+(i-1)*4)@ha
7916 * lwz 11,(plt+(i-1)*4)@l(11)
7920 * The branch table is the same, then comes
7924 * addis 11,11,(-res_0)@ha
7925 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
7926 * addi 11,11,(-res_0)@l # r11 = index * 4
7929 * lwz 12,(got+8)@l(12) # got[2] contains the map address
7930 * add 11,0,11 # r11 = index * 12 = reloc offset.
7933 static const unsigned int plt_resolve
[] =
7953 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
7955 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
7958 /* Build the branch table, one for each plt entry (less one),
7959 and perhaps some padding. */
7960 p
= htab
->glink
->contents
;
7961 p
+= htab
->glink_pltresolve
;
7962 endp
= htab
->glink
->contents
;
7963 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
7964 while (p
< endp
- 8 * 4)
7966 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
7971 bfd_put_32 (output_bfd
, NOP
, p
);
7975 res0
= (htab
->glink_pltresolve
7976 + htab
->glink
->output_section
->vma
7977 + htab
->glink
->output_offset
);
7979 /* Last comes the PLTresolve stub. */
7980 if (info
->shared
|| info
->pie
)
7984 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
7986 bfd_put_32 (output_bfd
, pic_plt_resolve
[i
], p
);
7989 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
7991 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
7992 + htab
->glink
->output_section
->vma
7993 + htab
->glink
->output_offset
);
7995 bfd_put_32 (output_bfd
,
7996 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
7997 bfd_put_32 (output_bfd
,
7998 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
7999 bfd_put_32 (output_bfd
,
8000 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
8001 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
8003 bfd_put_32 (output_bfd
,
8004 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
8005 bfd_put_32 (output_bfd
,
8006 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
8010 bfd_put_32 (output_bfd
,
8011 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
8012 bfd_put_32 (output_bfd
,
8013 LWZ_12_12
+ 4, p
+ 9*4);
8018 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
8020 bfd_put_32 (output_bfd
, plt_resolve
[i
], p
);
8023 p
-= 4 * ARRAY_SIZE (plt_resolve
);
8025 bfd_put_32 (output_bfd
,
8026 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
8027 bfd_put_32 (output_bfd
,
8028 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
8029 bfd_put_32 (output_bfd
,
8030 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
8031 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
8033 bfd_put_32 (output_bfd
,
8034 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
8035 bfd_put_32 (output_bfd
,
8036 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
8040 bfd_put_32 (output_bfd
,
8041 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
8042 bfd_put_32 (output_bfd
,
8043 LWZ_12_12
+ 4, p
+ 6*4);
8051 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8052 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8053 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8054 #define TARGET_BIG_NAME "elf32-powerpc"
8055 #define ELF_ARCH bfd_arch_powerpc
8056 #define ELF_MACHINE_CODE EM_PPC
8057 #ifdef __QNXTARGET__
8058 #define ELF_MAXPAGESIZE 0x1000
8060 #define ELF_MAXPAGESIZE 0x10000
8062 #define ELF_MINPAGESIZE 0x1000
8063 #define ELF_COMMONPAGESIZE 0x1000
8064 #define elf_info_to_howto ppc_elf_info_to_howto
8066 #ifdef EM_CYGNUS_POWERPC
8067 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8071 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8074 #define elf_backend_plt_not_loaded 1
8075 #define elf_backend_can_gc_sections 1
8076 #define elf_backend_can_refcount 1
8077 #define elf_backend_rela_normal 1
8079 #define bfd_elf32_mkobject ppc_elf_mkobject
8080 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8081 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8082 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8083 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8084 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8085 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8086 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8088 #define elf_backend_object_p ppc_elf_object_p
8089 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8090 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8091 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8092 #define elf_backend_relocate_section ppc_elf_relocate_section
8093 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8094 #define elf_backend_check_relocs ppc_elf_check_relocs
8095 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8096 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8097 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8098 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8099 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8100 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8101 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8102 #define elf_backend_fake_sections ppc_elf_fake_sections
8103 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8104 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8105 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8106 #define elf_backend_write_core_note ppc_elf_write_core_note
8107 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8108 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8109 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8110 #define elf_backend_write_section ppc_elf_write_section
8111 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8112 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8113 #define elf_backend_action_discarded ppc_elf_action_discarded
8114 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8116 #include "elf32-target.h"
8118 /* VxWorks Target */
8120 #undef TARGET_LITTLE_SYM
8121 #undef TARGET_LITTLE_NAME
8123 #undef TARGET_BIG_SYM
8124 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8125 #undef TARGET_BIG_NAME
8126 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8128 /* VxWorks uses the elf default section flags for .plt. */
8129 static const struct bfd_elf_special_section
*
8130 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
8132 if (sec
->name
== NULL
)
8135 if (strcmp (sec
->name
, ".plt") == 0)
8136 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
8138 return ppc_elf_get_sec_type_attr (abfd
, sec
);
8141 /* Like ppc_elf_link_hash_table_create, but overrides
8142 appropriately for VxWorks. */
8143 static struct bfd_link_hash_table
*
8144 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
8146 struct bfd_link_hash_table
*ret
;
8148 ret
= ppc_elf_link_hash_table_create (abfd
);
8151 struct ppc_elf_link_hash_table
*htab
8152 = (struct ppc_elf_link_hash_table
*)ret
;
8153 htab
->is_vxworks
= 1;
8154 htab
->plt_type
= PLT_VXWORKS
;
8155 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
8156 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
8157 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
8162 /* Tweak magic VxWorks symbols as they are loaded. */
8164 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
8165 struct bfd_link_info
*info
,
8166 Elf_Internal_Sym
*sym
,
8167 const char **namep ATTRIBUTE_UNUSED
,
8168 flagword
*flagsp ATTRIBUTE_UNUSED
,
8172 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
8176 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
8180 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
8182 ppc_elf_final_write_processing(abfd
, linker
);
8183 elf_vxworks_final_write_processing(abfd
, linker
);
8186 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8188 #undef elf_backend_want_plt_sym
8189 #define elf_backend_want_plt_sym 1
8190 #undef elf_backend_want_got_plt
8191 #define elf_backend_want_got_plt 1
8192 #undef elf_backend_got_symbol_offset
8193 #define elf_backend_got_symbol_offset 0
8194 #undef elf_backend_plt_not_loaded
8195 #define elf_backend_plt_not_loaded 0
8196 #undef elf_backend_plt_readonly
8197 #define elf_backend_plt_readonly 1
8198 #undef elf_backend_got_header_size
8199 #define elf_backend_got_header_size 12
8201 #undef bfd_elf32_get_synthetic_symtab
8203 #undef bfd_elf32_bfd_link_hash_table_create
8204 #define bfd_elf32_bfd_link_hash_table_create \
8205 ppc_elf_vxworks_link_hash_table_create
8206 #undef elf_backend_add_symbol_hook
8207 #define elf_backend_add_symbol_hook \
8208 ppc_elf_vxworks_add_symbol_hook
8209 #undef elf_backend_link_output_symbol_hook
8210 #define elf_backend_link_output_symbol_hook \
8211 elf_vxworks_link_output_symbol_hook
8212 #undef elf_backend_final_write_processing
8213 #define elf_backend_final_write_processing \
8214 ppc_elf_vxworks_final_write_processing
8215 #undef elf_backend_get_sec_type_attr
8216 #define elf_backend_get_sec_type_attr \
8217 ppc_elf_vxworks_get_sec_type_attr
8218 #undef elf_backend_emit_relocs
8219 #define elf_backend_emit_relocs \
8220 elf_vxworks_emit_relocs
8223 #define elf32_bed ppc_elf_vxworks_bed
8225 #include "elf32-target.h"