1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005 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 2 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. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
34 #include "elf32-ppc.h"
35 #include "elf-vxworks.h"
37 /* RELA relocations are used here. */
39 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
40 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
41 static bfd_reloc_status_type ppc_elf_unhandled_reloc
42 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 /* Branch prediction bit for branch taken relocs. */
45 #define BRANCH_PREDICT_BIT 0x200000
46 /* Mask to set RA in memory instructions. */
47 #define RA_REGISTER_MASK 0x001f0000
48 /* Value to shift register by to insert RA. */
49 #define RA_REGISTER_SHIFT 16
51 /* The name of the dynamic interpreter. This is put in the .interp
53 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
55 /* For old-style PLT. */
56 /* The number of single-slot PLT entries (the rest use two slots). */
57 #define PLT_NUM_SINGLE_ENTRIES 8192
59 /* For new-style .glink and .plt. */
60 #define GLINK_PLTRESOLVE 16*4
61 #define GLINK_ENTRY_SIZE 4*4
63 /* VxWorks uses its own plt layout, filled in by the static linker. */
65 /* The standard VxWorks PLT entry. */
66 #define VXWORKS_PLT_ENTRY_SIZE 32
67 static const bfd_vma ppc_elf_vxworks_plt_entry
68 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
70 0x3d800000, /* lis r12,0 */
71 0x818c0000, /* lwz r12,0(r12) */
72 0x7d8903a6, /* mtctr r12 */
73 0x4e800420, /* bctr */
74 0x39600000, /* li r11,0 */
75 0x48000000, /* b 14 <.PLT0resolve+0x4> */
79 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
80 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
82 0x3d9e0000, /* addis r12,r30,0 */
83 0x818c0000, /* lwz r12,0(r12) */
84 0x7d8903a6, /* mtctr r12 */
85 0x4e800420, /* bctr */
86 0x39600000, /* li r11,0 */
87 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
92 /* The initial VxWorks PLT entry. */
93 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
94 static const bfd_vma ppc_elf_vxworks_plt0_entry
95 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
97 0x3d800000, /* lis r12,0 */
98 0x398c0000, /* addi r12,r12,0 */
99 0x800c0008, /* lwz r0,8(r12) */
100 0x7c0903a6, /* mtctr r0 */
101 0x818c0004, /* lwz r12,4(r12) */
102 0x4e800420, /* bctr */
103 0x60000000, /* nop */
104 0x60000000, /* nop */
106 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
107 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
109 0x819e0008, /* lwz r12,8(r30) */
110 0x7d8903a6, /* mtctr r12 */
111 0x819e0004, /* lwz r12,4(r30) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
119 /* For executables, we have some additional relocations in
120 .rela.plt.unloaded, for the kernel loader. */
122 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
123 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
124 /* The number of relocations in the PLTResolve slot. */
125 #define VXWORKS_PLTRESOLVE_RELOCS 2
126 /* The number of relocations in the PLTResolve slot when when creating
128 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
130 /* Some instructions. */
131 #define ADDIS_11_11 0x3d6b0000
132 #define ADDIS_11_30 0x3d7e0000
133 #define ADDIS_12_12 0x3d8c0000
134 #define ADDI_11_11 0x396b0000
135 #define ADD_0_11_11 0x7c0b5a14
136 #define ADD_11_0_11 0x7d605a14
138 #define BCL_20_31 0x429f0005
139 #define BCTR 0x4e800420
140 #define LIS_11 0x3d600000
141 #define LIS_12 0x3d800000
142 #define LWZU_0_12 0x840c0000
143 #define LWZ_0_12 0x800c0000
144 #define LWZ_11_11 0x816b0000
145 #define LWZ_11_30 0x817e0000
146 #define LWZ_12_12 0x818c0000
147 #define MFLR_0 0x7c0802a6
148 #define MFLR_12 0x7d8802a6
149 #define MTCTR_0 0x7c0903a6
150 #define MTCTR_11 0x7d6903a6
151 #define MTLR_0 0x7c0803a6
152 #define NOP 0x60000000
153 #define SUB_11_11_12 0x7d6c5850
155 /* Offset of tp and dtp pointers from start of TLS block. */
156 #define TP_OFFSET 0x7000
157 #define DTP_OFFSET 0x8000
159 static reloc_howto_type
*ppc_elf_howto_table
[R_PPC_max
];
161 static reloc_howto_type ppc_elf_howto_raw
[] = {
162 /* This reloc does nothing. */
163 HOWTO (R_PPC_NONE
, /* type */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
167 FALSE
, /* pc_relative */
169 complain_overflow_bitfield
, /* complain_on_overflow */
170 bfd_elf_generic_reloc
, /* special_function */
171 "R_PPC_NONE", /* name */
172 FALSE
, /* partial_inplace */
175 FALSE
), /* pcrel_offset */
177 /* A standard 32 bit relocation. */
178 HOWTO (R_PPC_ADDR32
, /* type */
180 2, /* size (0 = byte, 1 = short, 2 = long) */
182 FALSE
, /* pc_relative */
184 complain_overflow_bitfield
, /* complain_on_overflow */
185 bfd_elf_generic_reloc
, /* special_function */
186 "R_PPC_ADDR32", /* name */
187 FALSE
, /* partial_inplace */
189 0xffffffff, /* dst_mask */
190 FALSE
), /* pcrel_offset */
192 /* An absolute 26 bit branch; the lower two bits must be zero.
193 FIXME: we don't check that, we just clear them. */
194 HOWTO (R_PPC_ADDR24
, /* type */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
198 FALSE
, /* pc_relative */
200 complain_overflow_bitfield
, /* complain_on_overflow */
201 bfd_elf_generic_reloc
, /* special_function */
202 "R_PPC_ADDR24", /* name */
203 FALSE
, /* partial_inplace */
205 0x3fffffc, /* dst_mask */
206 FALSE
), /* pcrel_offset */
208 /* A standard 16 bit relocation. */
209 HOWTO (R_PPC_ADDR16
, /* type */
211 1, /* size (0 = byte, 1 = short, 2 = long) */
213 FALSE
, /* pc_relative */
215 complain_overflow_bitfield
, /* complain_on_overflow */
216 bfd_elf_generic_reloc
, /* special_function */
217 "R_PPC_ADDR16", /* name */
218 FALSE
, /* partial_inplace */
220 0xffff, /* dst_mask */
221 FALSE
), /* pcrel_offset */
223 /* A 16 bit relocation without overflow. */
224 HOWTO (R_PPC_ADDR16_LO
, /* type */
226 1, /* size (0 = byte, 1 = short, 2 = long) */
228 FALSE
, /* pc_relative */
230 complain_overflow_dont
,/* complain_on_overflow */
231 bfd_elf_generic_reloc
, /* special_function */
232 "R_PPC_ADDR16_LO", /* name */
233 FALSE
, /* partial_inplace */
235 0xffff, /* dst_mask */
236 FALSE
), /* pcrel_offset */
238 /* The high order 16 bits of an address. */
239 HOWTO (R_PPC_ADDR16_HI
, /* type */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
243 FALSE
, /* pc_relative */
245 complain_overflow_dont
, /* complain_on_overflow */
246 bfd_elf_generic_reloc
, /* special_function */
247 "R_PPC_ADDR16_HI", /* name */
248 FALSE
, /* partial_inplace */
250 0xffff, /* dst_mask */
251 FALSE
), /* pcrel_offset */
253 /* The high order 16 bits of an address, plus 1 if the contents of
254 the low 16 bits, treated as a signed number, is negative. */
255 HOWTO (R_PPC_ADDR16_HA
, /* type */
257 1, /* size (0 = byte, 1 = short, 2 = long) */
259 FALSE
, /* pc_relative */
261 complain_overflow_dont
, /* complain_on_overflow */
262 ppc_elf_addr16_ha_reloc
, /* special_function */
263 "R_PPC_ADDR16_HA", /* name */
264 FALSE
, /* partial_inplace */
266 0xffff, /* dst_mask */
267 FALSE
), /* pcrel_offset */
269 /* An absolute 16 bit branch; the lower two bits must be zero.
270 FIXME: we don't check that, we just clear them. */
271 HOWTO (R_PPC_ADDR14
, /* type */
273 2, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE
, /* pc_relative */
277 complain_overflow_bitfield
, /* complain_on_overflow */
278 bfd_elf_generic_reloc
, /* special_function */
279 "R_PPC_ADDR14", /* name */
280 FALSE
, /* partial_inplace */
282 0xfffc, /* dst_mask */
283 FALSE
), /* pcrel_offset */
285 /* An absolute 16 bit branch, for which bit 10 should be set to
286 indicate that the branch is expected to be taken. The lower two
287 bits must be zero. */
288 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 FALSE
, /* pc_relative */
294 complain_overflow_bitfield
, /* complain_on_overflow */
295 bfd_elf_generic_reloc
, /* special_function */
296 "R_PPC_ADDR14_BRTAKEN",/* name */
297 FALSE
, /* partial_inplace */
299 0xfffc, /* dst_mask */
300 FALSE
), /* pcrel_offset */
302 /* An absolute 16 bit branch, for which bit 10 should be set to
303 indicate that the branch is not expected to be taken. The lower
304 two bits must be zero. */
305 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 FALSE
, /* pc_relative */
311 complain_overflow_bitfield
, /* complain_on_overflow */
312 bfd_elf_generic_reloc
, /* special_function */
313 "R_PPC_ADDR14_BRNTAKEN",/* name */
314 FALSE
, /* partial_inplace */
316 0xfffc, /* dst_mask */
317 FALSE
), /* pcrel_offset */
319 /* A relative 26 bit branch; the lower two bits must be zero. */
320 HOWTO (R_PPC_REL24
, /* type */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
324 TRUE
, /* pc_relative */
326 complain_overflow_signed
, /* complain_on_overflow */
327 bfd_elf_generic_reloc
, /* special_function */
328 "R_PPC_REL24", /* name */
329 FALSE
, /* partial_inplace */
331 0x3fffffc, /* dst_mask */
332 TRUE
), /* pcrel_offset */
334 /* A relative 16 bit branch; the lower two bits must be zero. */
335 HOWTO (R_PPC_REL14
, /* type */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
339 TRUE
, /* pc_relative */
341 complain_overflow_signed
, /* complain_on_overflow */
342 bfd_elf_generic_reloc
, /* special_function */
343 "R_PPC_REL14", /* name */
344 FALSE
, /* partial_inplace */
346 0xfffc, /* dst_mask */
347 TRUE
), /* pcrel_offset */
349 /* A relative 16 bit branch. Bit 10 should be set to indicate that
350 the branch is expected to be taken. The lower two bits must be
352 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 TRUE
, /* pc_relative */
358 complain_overflow_signed
, /* complain_on_overflow */
359 bfd_elf_generic_reloc
, /* special_function */
360 "R_PPC_REL14_BRTAKEN", /* name */
361 FALSE
, /* partial_inplace */
363 0xfffc, /* dst_mask */
364 TRUE
), /* pcrel_offset */
366 /* A relative 16 bit branch. Bit 10 should be set to indicate that
367 the branch is not expected to be taken. The lower two bits must
369 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
373 TRUE
, /* pc_relative */
375 complain_overflow_signed
, /* complain_on_overflow */
376 bfd_elf_generic_reloc
, /* special_function */
377 "R_PPC_REL14_BRNTAKEN",/* name */
378 FALSE
, /* partial_inplace */
380 0xfffc, /* dst_mask */
381 TRUE
), /* pcrel_offset */
383 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
385 HOWTO (R_PPC_GOT16
, /* type */
387 1, /* size (0 = byte, 1 = short, 2 = long) */
389 FALSE
, /* pc_relative */
391 complain_overflow_signed
, /* complain_on_overflow */
392 bfd_elf_generic_reloc
, /* special_function */
393 "R_PPC_GOT16", /* name */
394 FALSE
, /* partial_inplace */
396 0xffff, /* dst_mask */
397 FALSE
), /* pcrel_offset */
399 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
401 HOWTO (R_PPC_GOT16_LO
, /* type */
403 1, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE
, /* pc_relative */
407 complain_overflow_dont
, /* complain_on_overflow */
408 bfd_elf_generic_reloc
, /* special_function */
409 "R_PPC_GOT16_LO", /* name */
410 FALSE
, /* partial_inplace */
412 0xffff, /* dst_mask */
413 FALSE
), /* pcrel_offset */
415 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
417 HOWTO (R_PPC_GOT16_HI
, /* type */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
421 FALSE
, /* pc_relative */
423 complain_overflow_bitfield
, /* complain_on_overflow */
424 bfd_elf_generic_reloc
, /* special_function */
425 "R_PPC_GOT16_HI", /* name */
426 FALSE
, /* partial_inplace */
428 0xffff, /* dst_mask */
429 FALSE
), /* pcrel_offset */
431 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
433 HOWTO (R_PPC_GOT16_HA
, /* type */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
437 FALSE
, /* pc_relative */
439 complain_overflow_bitfield
, /* complain_on_overflow */
440 ppc_elf_addr16_ha_reloc
, /* special_function */
441 "R_PPC_GOT16_HA", /* name */
442 FALSE
, /* partial_inplace */
444 0xffff, /* dst_mask */
445 FALSE
), /* pcrel_offset */
447 /* Like R_PPC_REL24, but referring to the procedure linkage table
448 entry for the symbol. */
449 HOWTO (R_PPC_PLTREL24
, /* type */
451 2, /* size (0 = byte, 1 = short, 2 = long) */
453 TRUE
, /* pc_relative */
455 complain_overflow_signed
, /* complain_on_overflow */
456 bfd_elf_generic_reloc
, /* special_function */
457 "R_PPC_PLTREL24", /* name */
458 FALSE
, /* partial_inplace */
460 0x3fffffc, /* dst_mask */
461 TRUE
), /* pcrel_offset */
463 /* This is used only by the dynamic linker. The symbol should exist
464 both in the object being run and in some shared library. The
465 dynamic linker copies the data addressed by the symbol from the
466 shared library into the object, because the object being
467 run has to have the data at some particular address. */
468 HOWTO (R_PPC_COPY
, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE
, /* pc_relative */
474 complain_overflow_bitfield
, /* complain_on_overflow */
475 bfd_elf_generic_reloc
, /* special_function */
476 "R_PPC_COPY", /* name */
477 FALSE
, /* partial_inplace */
480 FALSE
), /* pcrel_offset */
482 /* Like R_PPC_ADDR32, but used when setting global offset table
484 HOWTO (R_PPC_GLOB_DAT
, /* type */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
488 FALSE
, /* pc_relative */
490 complain_overflow_bitfield
, /* complain_on_overflow */
491 bfd_elf_generic_reloc
, /* special_function */
492 "R_PPC_GLOB_DAT", /* name */
493 FALSE
, /* partial_inplace */
495 0xffffffff, /* dst_mask */
496 FALSE
), /* pcrel_offset */
498 /* Marks a procedure linkage table entry for a symbol. */
499 HOWTO (R_PPC_JMP_SLOT
, /* type */
501 2, /* size (0 = byte, 1 = short, 2 = long) */
503 FALSE
, /* pc_relative */
505 complain_overflow_bitfield
, /* complain_on_overflow */
506 bfd_elf_generic_reloc
, /* special_function */
507 "R_PPC_JMP_SLOT", /* name */
508 FALSE
, /* partial_inplace */
511 FALSE
), /* pcrel_offset */
513 /* Used only by the dynamic linker. When the object is run, this
514 longword is set to the load address of the object, plus the
516 HOWTO (R_PPC_RELATIVE
, /* type */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
520 FALSE
, /* pc_relative */
522 complain_overflow_bitfield
, /* complain_on_overflow */
523 bfd_elf_generic_reloc
, /* special_function */
524 "R_PPC_RELATIVE", /* name */
525 FALSE
, /* partial_inplace */
527 0xffffffff, /* dst_mask */
528 FALSE
), /* pcrel_offset */
530 /* Like R_PPC_REL24, but uses the value of the symbol within the
531 object rather than the final value. Normally used for
532 _GLOBAL_OFFSET_TABLE_. */
533 HOWTO (R_PPC_LOCAL24PC
, /* type */
535 2, /* size (0 = byte, 1 = short, 2 = long) */
537 TRUE
, /* pc_relative */
539 complain_overflow_signed
, /* complain_on_overflow */
540 bfd_elf_generic_reloc
, /* special_function */
541 "R_PPC_LOCAL24PC", /* name */
542 FALSE
, /* partial_inplace */
544 0x3fffffc, /* dst_mask */
545 TRUE
), /* pcrel_offset */
547 /* Like R_PPC_ADDR32, but may be unaligned. */
548 HOWTO (R_PPC_UADDR32
, /* type */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
552 FALSE
, /* pc_relative */
554 complain_overflow_bitfield
, /* complain_on_overflow */
555 bfd_elf_generic_reloc
, /* special_function */
556 "R_PPC_UADDR32", /* name */
557 FALSE
, /* partial_inplace */
559 0xffffffff, /* dst_mask */
560 FALSE
), /* pcrel_offset */
562 /* Like R_PPC_ADDR16, but may be unaligned. */
563 HOWTO (R_PPC_UADDR16
, /* type */
565 1, /* size (0 = byte, 1 = short, 2 = long) */
567 FALSE
, /* pc_relative */
569 complain_overflow_bitfield
, /* complain_on_overflow */
570 bfd_elf_generic_reloc
, /* special_function */
571 "R_PPC_UADDR16", /* name */
572 FALSE
, /* partial_inplace */
574 0xffff, /* dst_mask */
575 FALSE
), /* pcrel_offset */
577 /* 32-bit PC relative */
578 HOWTO (R_PPC_REL32
, /* type */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
582 TRUE
, /* pc_relative */
584 complain_overflow_bitfield
, /* complain_on_overflow */
585 bfd_elf_generic_reloc
, /* special_function */
586 "R_PPC_REL32", /* name */
587 FALSE
, /* partial_inplace */
589 0xffffffff, /* dst_mask */
590 TRUE
), /* pcrel_offset */
592 /* 32-bit relocation to the symbol's procedure linkage table.
593 FIXME: not supported. */
594 HOWTO (R_PPC_PLT32
, /* type */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
598 FALSE
, /* pc_relative */
600 complain_overflow_bitfield
, /* complain_on_overflow */
601 bfd_elf_generic_reloc
, /* special_function */
602 "R_PPC_PLT32", /* name */
603 FALSE
, /* partial_inplace */
606 FALSE
), /* pcrel_offset */
608 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
609 FIXME: not supported. */
610 HOWTO (R_PPC_PLTREL32
, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 TRUE
, /* pc_relative */
616 complain_overflow_bitfield
, /* complain_on_overflow */
617 bfd_elf_generic_reloc
, /* special_function */
618 "R_PPC_PLTREL32", /* name */
619 FALSE
, /* partial_inplace */
622 TRUE
), /* pcrel_offset */
624 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
626 HOWTO (R_PPC_PLT16_LO
, /* type */
628 1, /* size (0 = byte, 1 = short, 2 = long) */
630 FALSE
, /* pc_relative */
632 complain_overflow_dont
, /* complain_on_overflow */
633 bfd_elf_generic_reloc
, /* special_function */
634 "R_PPC_PLT16_LO", /* name */
635 FALSE
, /* partial_inplace */
637 0xffff, /* dst_mask */
638 FALSE
), /* pcrel_offset */
640 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
642 HOWTO (R_PPC_PLT16_HI
, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE
, /* pc_relative */
648 complain_overflow_bitfield
, /* complain_on_overflow */
649 bfd_elf_generic_reloc
, /* special_function */
650 "R_PPC_PLT16_HI", /* name */
651 FALSE
, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE
), /* pcrel_offset */
656 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
658 HOWTO (R_PPC_PLT16_HA
, /* type */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
662 FALSE
, /* pc_relative */
664 complain_overflow_bitfield
, /* complain_on_overflow */
665 ppc_elf_addr16_ha_reloc
, /* special_function */
666 "R_PPC_PLT16_HA", /* name */
667 FALSE
, /* partial_inplace */
669 0xffff, /* dst_mask */
670 FALSE
), /* pcrel_offset */
672 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
674 HOWTO (R_PPC_SDAREL16
, /* type */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
678 FALSE
, /* pc_relative */
680 complain_overflow_signed
, /* complain_on_overflow */
681 bfd_elf_generic_reloc
, /* special_function */
682 "R_PPC_SDAREL16", /* name */
683 FALSE
, /* partial_inplace */
685 0xffff, /* dst_mask */
686 FALSE
), /* pcrel_offset */
688 /* 16-bit section relative relocation. */
689 HOWTO (R_PPC_SECTOFF
, /* type */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
693 FALSE
, /* pc_relative */
695 complain_overflow_bitfield
, /* complain_on_overflow */
696 bfd_elf_generic_reloc
, /* special_function */
697 "R_PPC_SECTOFF", /* name */
698 FALSE
, /* partial_inplace */
700 0xffff, /* dst_mask */
701 FALSE
), /* pcrel_offset */
703 /* 16-bit lower half section relative relocation. */
704 HOWTO (R_PPC_SECTOFF_LO
, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE
, /* pc_relative */
710 complain_overflow_dont
, /* complain_on_overflow */
711 bfd_elf_generic_reloc
, /* special_function */
712 "R_PPC_SECTOFF_LO", /* name */
713 FALSE
, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE
), /* pcrel_offset */
718 /* 16-bit upper half section relative relocation. */
719 HOWTO (R_PPC_SECTOFF_HI
, /* type */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
723 FALSE
, /* pc_relative */
725 complain_overflow_bitfield
, /* complain_on_overflow */
726 bfd_elf_generic_reloc
, /* special_function */
727 "R_PPC_SECTOFF_HI", /* name */
728 FALSE
, /* partial_inplace */
730 0xffff, /* dst_mask */
731 FALSE
), /* pcrel_offset */
733 /* 16-bit upper half adjusted section relative relocation. */
734 HOWTO (R_PPC_SECTOFF_HA
, /* type */
736 1, /* size (0 = byte, 1 = short, 2 = long) */
738 FALSE
, /* pc_relative */
740 complain_overflow_bitfield
, /* complain_on_overflow */
741 ppc_elf_addr16_ha_reloc
, /* special_function */
742 "R_PPC_SECTOFF_HA", /* name */
743 FALSE
, /* partial_inplace */
745 0xffff, /* dst_mask */
746 FALSE
), /* pcrel_offset */
748 /* Marker reloc for TLS. */
751 2, /* size (0 = byte, 1 = short, 2 = long) */
753 FALSE
, /* pc_relative */
755 complain_overflow_dont
, /* complain_on_overflow */
756 bfd_elf_generic_reloc
, /* special_function */
757 "R_PPC_TLS", /* name */
758 FALSE
, /* partial_inplace */
761 FALSE
), /* pcrel_offset */
763 /* Computes the load module index of the load module that contains the
764 definition of its TLS sym. */
765 HOWTO (R_PPC_DTPMOD32
,
767 2, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE
, /* pc_relative */
771 complain_overflow_dont
, /* complain_on_overflow */
772 ppc_elf_unhandled_reloc
, /* special_function */
773 "R_PPC_DTPMOD32", /* name */
774 FALSE
, /* partial_inplace */
776 0xffffffff, /* dst_mask */
777 FALSE
), /* pcrel_offset */
779 /* Computes a dtv-relative displacement, the difference between the value
780 of sym+add and the base address of the thread-local storage block that
781 contains the definition of sym, minus 0x8000. */
782 HOWTO (R_PPC_DTPREL32
,
784 2, /* size (0 = byte, 1 = short, 2 = long) */
786 FALSE
, /* pc_relative */
788 complain_overflow_dont
, /* complain_on_overflow */
789 ppc_elf_unhandled_reloc
, /* special_function */
790 "R_PPC_DTPREL32", /* name */
791 FALSE
, /* partial_inplace */
793 0xffffffff, /* dst_mask */
794 FALSE
), /* pcrel_offset */
796 /* A 16 bit dtprel reloc. */
797 HOWTO (R_PPC_DTPREL16
,
799 1, /* size (0 = byte, 1 = short, 2 = long) */
801 FALSE
, /* pc_relative */
803 complain_overflow_signed
, /* complain_on_overflow */
804 ppc_elf_unhandled_reloc
, /* special_function */
805 "R_PPC_DTPREL16", /* name */
806 FALSE
, /* partial_inplace */
808 0xffff, /* dst_mask */
809 FALSE
), /* pcrel_offset */
811 /* Like DTPREL16, but no overflow. */
812 HOWTO (R_PPC_DTPREL16_LO
,
814 1, /* size (0 = byte, 1 = short, 2 = long) */
816 FALSE
, /* pc_relative */
818 complain_overflow_dont
, /* complain_on_overflow */
819 ppc_elf_unhandled_reloc
, /* special_function */
820 "R_PPC_DTPREL16_LO", /* name */
821 FALSE
, /* partial_inplace */
823 0xffff, /* dst_mask */
824 FALSE
), /* pcrel_offset */
826 /* Like DTPREL16_LO, but next higher group of 16 bits. */
827 HOWTO (R_PPC_DTPREL16_HI
,
829 1, /* size (0 = byte, 1 = short, 2 = long) */
831 FALSE
, /* pc_relative */
833 complain_overflow_dont
, /* complain_on_overflow */
834 ppc_elf_unhandled_reloc
, /* special_function */
835 "R_PPC_DTPREL16_HI", /* name */
836 FALSE
, /* partial_inplace */
838 0xffff, /* dst_mask */
839 FALSE
), /* pcrel_offset */
841 /* Like DTPREL16_HI, but adjust for low 16 bits. */
842 HOWTO (R_PPC_DTPREL16_HA
,
844 1, /* size (0 = byte, 1 = short, 2 = long) */
846 FALSE
, /* pc_relative */
848 complain_overflow_dont
, /* complain_on_overflow */
849 ppc_elf_unhandled_reloc
, /* special_function */
850 "R_PPC_DTPREL16_HA", /* name */
851 FALSE
, /* partial_inplace */
853 0xffff, /* dst_mask */
854 FALSE
), /* pcrel_offset */
856 /* Computes a tp-relative displacement, the difference between the value of
857 sym+add and the value of the thread pointer (r13). */
858 HOWTO (R_PPC_TPREL32
,
860 2, /* size (0 = byte, 1 = short, 2 = long) */
862 FALSE
, /* pc_relative */
864 complain_overflow_dont
, /* complain_on_overflow */
865 ppc_elf_unhandled_reloc
, /* special_function */
866 "R_PPC_TPREL32", /* name */
867 FALSE
, /* partial_inplace */
869 0xffffffff, /* dst_mask */
870 FALSE
), /* pcrel_offset */
872 /* A 16 bit tprel reloc. */
873 HOWTO (R_PPC_TPREL16
,
875 1, /* size (0 = byte, 1 = short, 2 = long) */
877 FALSE
, /* pc_relative */
879 complain_overflow_signed
, /* complain_on_overflow */
880 ppc_elf_unhandled_reloc
, /* special_function */
881 "R_PPC_TPREL16", /* name */
882 FALSE
, /* partial_inplace */
884 0xffff, /* dst_mask */
885 FALSE
), /* pcrel_offset */
887 /* Like TPREL16, but no overflow. */
888 HOWTO (R_PPC_TPREL16_LO
,
890 1, /* size (0 = byte, 1 = short, 2 = long) */
892 FALSE
, /* pc_relative */
894 complain_overflow_dont
, /* complain_on_overflow */
895 ppc_elf_unhandled_reloc
, /* special_function */
896 "R_PPC_TPREL16_LO", /* name */
897 FALSE
, /* partial_inplace */
899 0xffff, /* dst_mask */
900 FALSE
), /* pcrel_offset */
902 /* Like TPREL16_LO, but next higher group of 16 bits. */
903 HOWTO (R_PPC_TPREL16_HI
,
905 1, /* size (0 = byte, 1 = short, 2 = long) */
907 FALSE
, /* pc_relative */
909 complain_overflow_dont
, /* complain_on_overflow */
910 ppc_elf_unhandled_reloc
, /* special_function */
911 "R_PPC_TPREL16_HI", /* name */
912 FALSE
, /* partial_inplace */
914 0xffff, /* dst_mask */
915 FALSE
), /* pcrel_offset */
917 /* Like TPREL16_HI, but adjust for low 16 bits. */
918 HOWTO (R_PPC_TPREL16_HA
,
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE
, /* pc_relative */
924 complain_overflow_dont
, /* complain_on_overflow */
925 ppc_elf_unhandled_reloc
, /* special_function */
926 "R_PPC_TPREL16_HA", /* name */
927 FALSE
, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE
), /* pcrel_offset */
932 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
933 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
934 to the first entry. */
935 HOWTO (R_PPC_GOT_TLSGD16
,
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE
, /* pc_relative */
941 complain_overflow_signed
, /* complain_on_overflow */
942 ppc_elf_unhandled_reloc
, /* special_function */
943 "R_PPC_GOT_TLSGD16", /* name */
944 FALSE
, /* partial_inplace */
946 0xffff, /* dst_mask */
947 FALSE
), /* pcrel_offset */
949 /* Like GOT_TLSGD16, but no overflow. */
950 HOWTO (R_PPC_GOT_TLSGD16_LO
,
952 1, /* size (0 = byte, 1 = short, 2 = long) */
954 FALSE
, /* pc_relative */
956 complain_overflow_dont
, /* complain_on_overflow */
957 ppc_elf_unhandled_reloc
, /* special_function */
958 "R_PPC_GOT_TLSGD16_LO", /* name */
959 FALSE
, /* partial_inplace */
961 0xffff, /* dst_mask */
962 FALSE
), /* pcrel_offset */
964 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
965 HOWTO (R_PPC_GOT_TLSGD16_HI
,
967 1, /* size (0 = byte, 1 = short, 2 = long) */
969 FALSE
, /* pc_relative */
971 complain_overflow_dont
, /* complain_on_overflow */
972 ppc_elf_unhandled_reloc
, /* special_function */
973 "R_PPC_GOT_TLSGD16_HI", /* name */
974 FALSE
, /* partial_inplace */
976 0xffff, /* dst_mask */
977 FALSE
), /* pcrel_offset */
979 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
980 HOWTO (R_PPC_GOT_TLSGD16_HA
,
982 1, /* size (0 = byte, 1 = short, 2 = long) */
984 FALSE
, /* pc_relative */
986 complain_overflow_dont
, /* complain_on_overflow */
987 ppc_elf_unhandled_reloc
, /* special_function */
988 "R_PPC_GOT_TLSGD16_HA", /* name */
989 FALSE
, /* partial_inplace */
991 0xffff, /* dst_mask */
992 FALSE
), /* pcrel_offset */
994 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
995 with values (sym+add)@dtpmod and zero, and computes the offset to the
997 HOWTO (R_PPC_GOT_TLSLD16
,
999 1, /* size (0 = byte, 1 = short, 2 = long) */
1001 FALSE
, /* pc_relative */
1003 complain_overflow_signed
, /* complain_on_overflow */
1004 ppc_elf_unhandled_reloc
, /* special_function */
1005 "R_PPC_GOT_TLSLD16", /* name */
1006 FALSE
, /* partial_inplace */
1008 0xffff, /* dst_mask */
1009 FALSE
), /* pcrel_offset */
1011 /* Like GOT_TLSLD16, but no overflow. */
1012 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1014 1, /* size (0 = byte, 1 = short, 2 = long) */
1016 FALSE
, /* pc_relative */
1018 complain_overflow_dont
, /* complain_on_overflow */
1019 ppc_elf_unhandled_reloc
, /* special_function */
1020 "R_PPC_GOT_TLSLD16_LO", /* name */
1021 FALSE
, /* partial_inplace */
1023 0xffff, /* dst_mask */
1024 FALSE
), /* pcrel_offset */
1026 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1027 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1028 16, /* rightshift */
1029 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 FALSE
, /* pc_relative */
1033 complain_overflow_dont
, /* complain_on_overflow */
1034 ppc_elf_unhandled_reloc
, /* special_function */
1035 "R_PPC_GOT_TLSLD16_HI", /* name */
1036 FALSE
, /* partial_inplace */
1038 0xffff, /* dst_mask */
1039 FALSE
), /* pcrel_offset */
1041 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1042 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1043 16, /* rightshift */
1044 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE
, /* pc_relative */
1048 complain_overflow_dont
, /* complain_on_overflow */
1049 ppc_elf_unhandled_reloc
, /* special_function */
1050 "R_PPC_GOT_TLSLD16_HA", /* name */
1051 FALSE
, /* partial_inplace */
1053 0xffff, /* dst_mask */
1054 FALSE
), /* pcrel_offset */
1056 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1057 the offset to the entry. */
1058 HOWTO (R_PPC_GOT_DTPREL16
,
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE
, /* pc_relative */
1064 complain_overflow_signed
, /* complain_on_overflow */
1065 ppc_elf_unhandled_reloc
, /* special_function */
1066 "R_PPC_GOT_DTPREL16", /* name */
1067 FALSE
, /* partial_inplace */
1069 0xffff, /* dst_mask */
1070 FALSE
), /* pcrel_offset */
1072 /* Like GOT_DTPREL16, but no overflow. */
1073 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE
, /* pc_relative */
1079 complain_overflow_dont
, /* complain_on_overflow */
1080 ppc_elf_unhandled_reloc
, /* special_function */
1081 "R_PPC_GOT_DTPREL16_LO", /* name */
1082 FALSE
, /* partial_inplace */
1084 0xffff, /* dst_mask */
1085 FALSE
), /* pcrel_offset */
1087 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1088 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1089 16, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE
, /* pc_relative */
1094 complain_overflow_dont
, /* complain_on_overflow */
1095 ppc_elf_unhandled_reloc
, /* special_function */
1096 "R_PPC_GOT_DTPREL16_HI", /* name */
1097 FALSE
, /* partial_inplace */
1099 0xffff, /* dst_mask */
1100 FALSE
), /* pcrel_offset */
1102 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1103 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1104 16, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE
, /* pc_relative */
1109 complain_overflow_dont
, /* complain_on_overflow */
1110 ppc_elf_unhandled_reloc
, /* special_function */
1111 "R_PPC_GOT_DTPREL16_HA", /* name */
1112 FALSE
, /* partial_inplace */
1114 0xffff, /* dst_mask */
1115 FALSE
), /* pcrel_offset */
1117 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1118 offset to the entry. */
1119 HOWTO (R_PPC_GOT_TPREL16
,
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 FALSE
, /* pc_relative */
1125 complain_overflow_signed
, /* complain_on_overflow */
1126 ppc_elf_unhandled_reloc
, /* special_function */
1127 "R_PPC_GOT_TPREL16", /* name */
1128 FALSE
, /* partial_inplace */
1130 0xffff, /* dst_mask */
1131 FALSE
), /* pcrel_offset */
1133 /* Like GOT_TPREL16, but no overflow. */
1134 HOWTO (R_PPC_GOT_TPREL16_LO
,
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 FALSE
, /* pc_relative */
1140 complain_overflow_dont
, /* complain_on_overflow */
1141 ppc_elf_unhandled_reloc
, /* special_function */
1142 "R_PPC_GOT_TPREL16_LO", /* name */
1143 FALSE
, /* partial_inplace */
1145 0xffff, /* dst_mask */
1146 FALSE
), /* pcrel_offset */
1148 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1149 HOWTO (R_PPC_GOT_TPREL16_HI
,
1150 16, /* rightshift */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE
, /* pc_relative */
1155 complain_overflow_dont
, /* complain_on_overflow */
1156 ppc_elf_unhandled_reloc
, /* special_function */
1157 "R_PPC_GOT_TPREL16_HI", /* name */
1158 FALSE
, /* partial_inplace */
1160 0xffff, /* dst_mask */
1161 FALSE
), /* pcrel_offset */
1163 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1164 HOWTO (R_PPC_GOT_TPREL16_HA
,
1165 16, /* rightshift */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 FALSE
, /* pc_relative */
1170 complain_overflow_dont
, /* complain_on_overflow */
1171 ppc_elf_unhandled_reloc
, /* special_function */
1172 "R_PPC_GOT_TPREL16_HA", /* name */
1173 FALSE
, /* partial_inplace */
1175 0xffff, /* dst_mask */
1176 FALSE
), /* pcrel_offset */
1178 /* The remaining relocs are from the Embedded ELF ABI, and are not
1179 in the SVR4 ELF ABI. */
1181 /* 32 bit value resulting from the addend minus the symbol. */
1182 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1184 2, /* size (0 = byte, 1 = short, 2 = long) */
1186 FALSE
, /* pc_relative */
1188 complain_overflow_bitfield
, /* complain_on_overflow */
1189 bfd_elf_generic_reloc
, /* special_function */
1190 "R_PPC_EMB_NADDR32", /* name */
1191 FALSE
, /* partial_inplace */
1193 0xffffffff, /* dst_mask */
1194 FALSE
), /* pcrel_offset */
1196 /* 16 bit value resulting from the addend minus the symbol. */
1197 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 FALSE
, /* pc_relative */
1203 complain_overflow_bitfield
, /* complain_on_overflow */
1204 bfd_elf_generic_reloc
, /* special_function */
1205 "R_PPC_EMB_NADDR16", /* name */
1206 FALSE
, /* partial_inplace */
1208 0xffff, /* dst_mask */
1209 FALSE
), /* pcrel_offset */
1211 /* 16 bit value resulting from the addend minus the symbol. */
1212 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE
, /* pc_relative */
1218 complain_overflow_dont
,/* complain_on_overflow */
1219 bfd_elf_generic_reloc
, /* special_function */
1220 "R_PPC_EMB_ADDR16_LO", /* name */
1221 FALSE
, /* partial_inplace */
1223 0xffff, /* dst_mask */
1224 FALSE
), /* pcrel_offset */
1226 /* The high order 16 bits of the addend minus the symbol. */
1227 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1228 16, /* rightshift */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE
, /* pc_relative */
1233 complain_overflow_dont
, /* complain_on_overflow */
1234 bfd_elf_generic_reloc
, /* special_function */
1235 "R_PPC_EMB_NADDR16_HI", /* name */
1236 FALSE
, /* partial_inplace */
1238 0xffff, /* dst_mask */
1239 FALSE
), /* pcrel_offset */
1241 /* The high order 16 bits of the result of the addend minus the address,
1242 plus 1 if the contents of the low 16 bits, treated as a signed number,
1244 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1245 16, /* rightshift */
1246 1, /* size (0 = byte, 1 = short, 2 = long) */
1248 FALSE
, /* pc_relative */
1250 complain_overflow_dont
, /* complain_on_overflow */
1251 ppc_elf_addr16_ha_reloc
, /* special_function */
1252 "R_PPC_EMB_NADDR16_HA", /* name */
1253 FALSE
, /* partial_inplace */
1255 0xffff, /* dst_mask */
1256 FALSE
), /* pcrel_offset */
1258 /* 16 bit value resulting from allocating a 4 byte word to hold an
1259 address in the .sdata section, and returning the offset from
1260 _SDA_BASE_ for that relocation. */
1261 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1263 1, /* size (0 = byte, 1 = short, 2 = long) */
1265 FALSE
, /* pc_relative */
1267 complain_overflow_bitfield
, /* complain_on_overflow */
1268 bfd_elf_generic_reloc
, /* special_function */
1269 "R_PPC_EMB_SDAI16", /* name */
1270 FALSE
, /* partial_inplace */
1272 0xffff, /* dst_mask */
1273 FALSE
), /* pcrel_offset */
1275 /* 16 bit value resulting from allocating a 4 byte word to hold an
1276 address in the .sdata2 section, and returning the offset from
1277 _SDA2_BASE_ for that relocation. */
1278 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1280 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 FALSE
, /* pc_relative */
1284 complain_overflow_bitfield
, /* complain_on_overflow */
1285 bfd_elf_generic_reloc
, /* special_function */
1286 "R_PPC_EMB_SDA2I16", /* name */
1287 FALSE
, /* partial_inplace */
1289 0xffff, /* dst_mask */
1290 FALSE
), /* pcrel_offset */
1292 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1293 small data items. */
1294 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1296 1, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE
, /* pc_relative */
1300 complain_overflow_signed
, /* complain_on_overflow */
1301 bfd_elf_generic_reloc
, /* special_function */
1302 "R_PPC_EMB_SDA2REL", /* name */
1303 FALSE
, /* partial_inplace */
1305 0xffff, /* dst_mask */
1306 FALSE
), /* pcrel_offset */
1308 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1309 signed offset from the appropriate base, and filling in the register
1310 field with the appropriate register (0, 2, or 13). */
1311 HOWTO (R_PPC_EMB_SDA21
, /* type */
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE
, /* pc_relative */
1317 complain_overflow_signed
, /* complain_on_overflow */
1318 bfd_elf_generic_reloc
, /* special_function */
1319 "R_PPC_EMB_SDA21", /* name */
1320 FALSE
, /* partial_inplace */
1322 0xffff, /* dst_mask */
1323 FALSE
), /* pcrel_offset */
1325 /* Relocation not handled: R_PPC_EMB_MRKREF */
1326 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1327 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1328 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1329 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1330 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1332 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1333 in the 16 bit signed offset from the appropriate base, and filling in the
1334 register field with the appropriate register (0, 2, or 13). */
1335 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1337 1, /* size (0 = byte, 1 = short, 2 = long) */
1339 TRUE
, /* pc_relative */
1341 complain_overflow_signed
, /* complain_on_overflow */
1342 bfd_elf_generic_reloc
, /* special_function */
1343 "R_PPC_EMB_RELSDA", /* name */
1344 FALSE
, /* partial_inplace */
1346 0xffff, /* dst_mask */
1347 FALSE
), /* pcrel_offset */
1349 /* A 16 bit relative relocation. */
1350 HOWTO (R_PPC_REL16
, /* type */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1354 TRUE
, /* pc_relative */
1356 complain_overflow_bitfield
, /* complain_on_overflow */
1357 bfd_elf_generic_reloc
, /* special_function */
1358 "R_PPC_REL16", /* name */
1359 FALSE
, /* partial_inplace */
1361 0xffff, /* dst_mask */
1362 TRUE
), /* pcrel_offset */
1364 /* A 16 bit relative relocation without overflow. */
1365 HOWTO (R_PPC_REL16_LO
, /* type */
1367 1, /* size (0 = byte, 1 = short, 2 = long) */
1369 TRUE
, /* pc_relative */
1371 complain_overflow_dont
,/* complain_on_overflow */
1372 bfd_elf_generic_reloc
, /* special_function */
1373 "R_PPC_REL16_LO", /* name */
1374 FALSE
, /* partial_inplace */
1376 0xffff, /* dst_mask */
1377 TRUE
), /* pcrel_offset */
1379 /* The high order 16 bits of a relative address. */
1380 HOWTO (R_PPC_REL16_HI
, /* type */
1381 16, /* rightshift */
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1384 TRUE
, /* pc_relative */
1386 complain_overflow_dont
, /* complain_on_overflow */
1387 bfd_elf_generic_reloc
, /* special_function */
1388 "R_PPC_REL16_HI", /* name */
1389 FALSE
, /* partial_inplace */
1391 0xffff, /* dst_mask */
1392 TRUE
), /* pcrel_offset */
1394 /* The high order 16 bits of a relative address, plus 1 if the contents of
1395 the low 16 bits, treated as a signed number, is negative. */
1396 HOWTO (R_PPC_REL16_HA
, /* type */
1397 16, /* rightshift */
1398 1, /* size (0 = byte, 1 = short, 2 = long) */
1400 TRUE
, /* pc_relative */
1402 complain_overflow_dont
, /* complain_on_overflow */
1403 ppc_elf_addr16_ha_reloc
, /* special_function */
1404 "R_PPC_REL16_HA", /* name */
1405 FALSE
, /* partial_inplace */
1407 0xffff, /* dst_mask */
1408 TRUE
), /* pcrel_offset */
1410 /* GNU extension to record C++ vtable hierarchy. */
1411 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1413 0, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE
, /* pc_relative */
1417 complain_overflow_dont
, /* complain_on_overflow */
1418 NULL
, /* special_function */
1419 "R_PPC_GNU_VTINHERIT", /* name */
1420 FALSE
, /* partial_inplace */
1423 FALSE
), /* pcrel_offset */
1425 /* GNU extension to record C++ vtable member usage. */
1426 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1428 0, /* size (0 = byte, 1 = short, 2 = long) */
1430 FALSE
, /* pc_relative */
1432 complain_overflow_dont
, /* complain_on_overflow */
1433 NULL
, /* special_function */
1434 "R_PPC_GNU_VTENTRY", /* name */
1435 FALSE
, /* partial_inplace */
1438 FALSE
), /* pcrel_offset */
1440 /* Phony reloc to handle AIX style TOC entries. */
1441 HOWTO (R_PPC_TOC16
, /* type */
1443 1, /* size (0 = byte, 1 = short, 2 = long) */
1445 FALSE
, /* pc_relative */
1447 complain_overflow_signed
, /* complain_on_overflow */
1448 bfd_elf_generic_reloc
, /* special_function */
1449 "R_PPC_TOC16", /* name */
1450 FALSE
, /* partial_inplace */
1452 0xffff, /* dst_mask */
1453 FALSE
), /* pcrel_offset */
1456 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1459 ppc_elf_howto_init (void)
1461 unsigned int i
, type
;
1464 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1467 type
= ppc_elf_howto_raw
[i
].type
;
1468 if (type
>= (sizeof (ppc_elf_howto_table
)
1469 / sizeof (ppc_elf_howto_table
[0])))
1471 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1475 static reloc_howto_type
*
1476 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1477 bfd_reloc_code_real_type code
)
1479 enum elf_ppc_reloc_type r
;
1481 /* Initialize howto table if not already done. */
1482 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1483 ppc_elf_howto_init ();
1490 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
1491 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
1492 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
1493 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
1494 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
1495 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
1496 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
1497 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
1498 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
1499 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
1500 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
1501 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
1502 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
1503 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
1504 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
1505 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
1506 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
1507 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
1508 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
1509 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
1510 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
1511 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
1512 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
1513 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
1514 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
1515 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
1516 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
1517 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
1518 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
1519 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
1520 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
1521 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
1522 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
1523 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
1524 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
1525 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
1526 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
1527 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
1528 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
1529 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
1530 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
1531 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
1532 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
1533 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
1534 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
1535 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
1536 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
1537 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
1538 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
1539 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
1540 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
1541 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
1542 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
1543 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
1544 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
1545 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
1546 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
1547 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
1548 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
1549 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
1550 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
1551 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
1552 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
1553 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
1554 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
1555 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
1556 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
1557 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
1558 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
1559 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
1560 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
1561 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
1562 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
1563 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
1564 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
1565 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
1566 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
1567 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
1568 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
1569 case BFD_RELOC_16_PCREL
: r
= R_PPC_REL16
; break;
1570 case BFD_RELOC_LO16_PCREL
: r
= R_PPC_REL16_LO
; break;
1571 case BFD_RELOC_HI16_PCREL
: r
= R_PPC_REL16_HI
; break;
1572 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC_REL16_HA
; break;
1573 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
1574 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
1577 return ppc_elf_howto_table
[r
];
1580 /* Set the howto pointer for a PowerPC ELF reloc. */
1583 ppc_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1585 Elf_Internal_Rela
*dst
)
1587 /* Initialize howto table if not already done. */
1588 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1589 ppc_elf_howto_init ();
1591 BFD_ASSERT (ELF32_R_TYPE (dst
->r_info
) < (unsigned int) R_PPC_max
);
1592 cache_ptr
->howto
= ppc_elf_howto_table
[ELF32_R_TYPE (dst
->r_info
)];
1595 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1597 static bfd_reloc_status_type
1598 ppc_elf_addr16_ha_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
1599 arelent
*reloc_entry
,
1601 void *data ATTRIBUTE_UNUSED
,
1602 asection
*input_section
,
1604 char **error_message ATTRIBUTE_UNUSED
)
1608 if (output_bfd
!= NULL
)
1610 reloc_entry
->address
+= input_section
->output_offset
;
1611 return bfd_reloc_ok
;
1614 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
1615 return bfd_reloc_outofrange
;
1617 if (bfd_is_com_section (symbol
->section
))
1620 relocation
= symbol
->value
;
1622 relocation
+= symbol
->section
->output_section
->vma
;
1623 relocation
+= symbol
->section
->output_offset
;
1624 relocation
+= reloc_entry
->addend
;
1625 if (reloc_entry
->howto
->pc_relative
)
1626 relocation
-= reloc_entry
->address
;
1628 reloc_entry
->addend
+= (relocation
& 0x8000) << 1;
1630 return bfd_reloc_continue
;
1633 static bfd_reloc_status_type
1634 ppc_elf_unhandled_reloc (bfd
*abfd
,
1635 arelent
*reloc_entry
,
1638 asection
*input_section
,
1640 char **error_message
)
1642 /* If this is a relocatable link (output_bfd test tells us), just
1643 call the generic function. Any adjustment will be done at final
1645 if (output_bfd
!= NULL
)
1646 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
1647 input_section
, output_bfd
, error_message
);
1649 if (error_message
!= NULL
)
1651 static char buf
[60];
1652 sprintf (buf
, _("generic linker can't handle %s"),
1653 reloc_entry
->howto
->name
);
1654 *error_message
= buf
;
1656 return bfd_reloc_dangerous
;
1659 /* Sections created by the linker. */
1661 typedef struct elf_linker_section
1663 /* Pointer to the bfd section. */
1667 /* Associated bss section name. */
1668 const char *bss_name
;
1669 /* Associated symbol name. */
1670 const char *sym_name
;
1671 /* Associated symbol. */
1672 struct elf_link_hash_entry
*sym
;
1673 } elf_linker_section_t
;
1675 /* Linked list of allocated pointer entries. This hangs off of the
1676 symbol lists, and provides allows us to return different pointers,
1677 based on different addend's. */
1679 typedef struct elf_linker_section_pointers
1681 /* next allocated pointer for this symbol */
1682 struct elf_linker_section_pointers
*next
;
1683 /* offset of pointer from beginning of section */
1687 /* which linker section this is */
1688 elf_linker_section_t
*lsect
;
1689 } elf_linker_section_pointers_t
;
1691 struct ppc_elf_obj_tdata
1693 struct elf_obj_tdata elf
;
1695 /* A mapping from local symbols to offsets into the various linker
1696 sections added. This is index by the symbol index. */
1697 elf_linker_section_pointers_t
**linker_section_pointers
;
1700 #define ppc_elf_tdata(bfd) \
1701 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1703 #define elf_local_ptr_offsets(bfd) \
1704 (ppc_elf_tdata (bfd)->linker_section_pointers)
1706 /* Override the generic function because we store some extras. */
1709 ppc_elf_mkobject (bfd
*abfd
)
1711 bfd_size_type amt
= sizeof (struct ppc_elf_obj_tdata
);
1712 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
1713 if (abfd
->tdata
.any
== NULL
)
1718 /* Fix bad default arch selected for a 32 bit input bfd when the
1719 default is 64 bit. */
1722 ppc_elf_object_p (bfd
*abfd
)
1724 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 64)
1726 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
1728 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
1730 /* Relies on arch after 64 bit default being 32 bit default. */
1731 abfd
->arch_info
= abfd
->arch_info
->next
;
1732 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
1738 /* Function to set whether a module needs the -mrelocatable bit set. */
1741 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
1743 BFD_ASSERT (!elf_flags_init (abfd
)
1744 || elf_elfheader (abfd
)->e_flags
== flags
);
1746 elf_elfheader (abfd
)->e_flags
= flags
;
1747 elf_flags_init (abfd
) = TRUE
;
1751 /* Support for core dump NOTE sections. */
1754 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1759 switch (note
->descsz
)
1764 case 268: /* Linux/PPC. */
1766 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1769 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1778 /* Make a ".reg/999" section. */
1779 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1780 size
, note
->descpos
+ offset
);
1784 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1786 switch (note
->descsz
)
1791 case 128: /* Linux/PPC elf_prpsinfo. */
1792 elf_tdata (abfd
)->core_program
1793 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
1794 elf_tdata (abfd
)->core_command
1795 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
1798 /* Note that for some reason, a spurious space is tacked
1799 onto the end of the args in some (at least one anyway)
1800 implementations, so strip it off if it exists. */
1803 char *command
= elf_tdata (abfd
)->core_command
;
1804 int n
= strlen (command
);
1806 if (0 < n
&& command
[n
- 1] == ' ')
1807 command
[n
- 1] = '\0';
1813 /* Return address for Ith PLT stub in section PLT, for relocation REL
1814 or (bfd_vma) -1 if it should not be included. */
1817 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
1818 const asection
*plt ATTRIBUTE_UNUSED
,
1821 return rel
->address
;
1824 /* Handle a PowerPC specific section when reading an object file. This
1825 is called when bfd_section_from_shdr finds a section with an unknown
1829 ppc_elf_section_from_shdr (bfd
*abfd
,
1830 Elf_Internal_Shdr
*hdr
,
1837 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
1840 newsect
= hdr
->bfd_section
;
1841 flags
= bfd_get_section_flags (abfd
, newsect
);
1842 if (hdr
->sh_flags
& SHF_EXCLUDE
)
1843 flags
|= SEC_EXCLUDE
;
1845 if (hdr
->sh_type
== SHT_ORDERED
)
1846 flags
|= SEC_SORT_ENTRIES
;
1848 bfd_set_section_flags (abfd
, newsect
, flags
);
1852 /* Set up any other section flags and such that may be necessary. */
1855 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1856 Elf_Internal_Shdr
*shdr
,
1859 if ((asect
->flags
& (SEC_GROUP
| SEC_EXCLUDE
)) == SEC_EXCLUDE
)
1860 shdr
->sh_flags
|= SHF_EXCLUDE
;
1862 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
1863 shdr
->sh_type
= SHT_ORDERED
;
1868 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1869 need to bump up the number of section headers. */
1872 ppc_elf_additional_program_headers (bfd
*abfd
)
1877 s
= bfd_get_section_by_name (abfd
, ".sbss2");
1878 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
1881 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
1882 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
1888 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1889 .PPC.EMB.sbss0 a normal section, and not a bss section so
1890 that the linker doesn't crater when trying to make more than
1893 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
1895 { ".plt", 4, 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
1896 { ".sbss", 5, -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
1897 { ".sbss2", 6, -2, SHT_PROGBITS
, SHF_ALLOC
},
1898 { ".sdata", 6, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
1899 { ".sdata2", 7, -2, SHT_PROGBITS
, SHF_ALLOC
},
1900 { ".tags", 5, 0, SHT_ORDERED
, SHF_ALLOC
},
1901 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE
, 0 },
1902 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS
, SHF_ALLOC
},
1903 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS
, SHF_ALLOC
},
1904 { NULL
, 0, 0, 0, 0 }
1907 /* This is what we want for new plt/got. */
1908 static struct bfd_elf_special_section ppc_alt_plt
=
1909 { ".plt", 4, 0, SHT_PROGBITS
, SHF_ALLOC
};
1911 static const struct bfd_elf_special_section
*
1912 ppc_elf_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1914 const struct bfd_elf_special_section
*ssect
;
1916 /* See if this is one of the special sections. */
1917 if (sec
->name
== NULL
)
1920 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
1924 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
1925 ssect
= &ppc_alt_plt
;
1929 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
1932 /* Very simple linked list structure for recording apuinfo values. */
1933 typedef struct apuinfo_list
1935 struct apuinfo_list
*next
;
1936 unsigned long value
;
1940 static apuinfo_list
*head
;
1944 apuinfo_list_init (void)
1950 apuinfo_list_add (unsigned long value
)
1952 apuinfo_list
*entry
= head
;
1954 while (entry
!= NULL
)
1956 if (entry
->value
== value
)
1958 entry
= entry
->next
;
1961 entry
= bfd_malloc (sizeof (* entry
));
1965 entry
->value
= value
;
1971 apuinfo_list_length (void)
1973 apuinfo_list
*entry
;
1974 unsigned long count
;
1976 for (entry
= head
, count
= 0;
1978 entry
= entry
->next
)
1984 static inline unsigned long
1985 apuinfo_list_element (unsigned long number
)
1987 apuinfo_list
* entry
;
1991 entry
= entry
->next
)
1994 return entry
? entry
->value
: 0;
1998 apuinfo_list_finish (void)
2000 apuinfo_list
*entry
;
2002 for (entry
= head
; entry
;)
2004 apuinfo_list
*next
= entry
->next
;
2012 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2013 #define APUINFO_LABEL "APUinfo"
2015 /* Scan the input BFDs and create a linked list of
2016 the APUinfo values that will need to be emitted. */
2019 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2024 unsigned num_input_sections
;
2025 bfd_size_type output_section_size
;
2027 unsigned num_entries
;
2028 unsigned long offset
;
2029 unsigned long length
;
2030 const char *error_message
= NULL
;
2032 if (link_info
== NULL
)
2035 /* Scan the input bfds, looking for apuinfo sections. */
2036 num_input_sections
= 0;
2037 output_section_size
= 0;
2039 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2041 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2044 ++ num_input_sections
;
2045 output_section_size
+= asec
->size
;
2049 /* We need at least one input sections
2050 in order to make merging worthwhile. */
2051 if (num_input_sections
< 1)
2054 /* Just make sure that the output section exists as well. */
2055 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2059 /* Allocate a buffer for the contents of the input sections. */
2060 buffer
= bfd_malloc (output_section_size
);
2065 apuinfo_list_init ();
2067 /* Read in the input sections contents. */
2068 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2070 unsigned long datum
;
2073 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2077 length
= asec
->size
;
2080 error_message
= _("corrupt or empty %s section in %B");
2084 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2085 || (bfd_bread (buffer
+ offset
, length
, ibfd
) != length
))
2087 error_message
= _("unable to read in %s section from %B");
2091 /* Process the contents of the section. */
2092 ptr
= buffer
+ offset
;
2093 error_message
= _("corrupt %s section in %B");
2095 /* Verify the contents of the header. Note - we have to
2096 extract the values this way in order to allow for a
2097 host whose endian-ness is different from the target. */
2098 datum
= bfd_get_32 (ibfd
, ptr
);
2099 if (datum
!= sizeof APUINFO_LABEL
)
2102 datum
= bfd_get_32 (ibfd
, ptr
+ 8);
2106 if (strcmp (ptr
+ 12, APUINFO_LABEL
) != 0)
2109 /* Get the number of bytes used for apuinfo entries. */
2110 datum
= bfd_get_32 (ibfd
, ptr
+ 4);
2111 if (datum
+ 20 != length
)
2114 /* Make sure that we do not run off the end of the section. */
2115 if (offset
+ length
> output_section_size
)
2118 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2119 for (i
= 0; i
< datum
; i
+= 4)
2120 apuinfo_list_add (bfd_get_32 (ibfd
, ptr
+ 20 + i
));
2122 /* Update the offset. */
2126 error_message
= NULL
;
2128 /* Compute the size of the output section. */
2129 num_entries
= apuinfo_list_length ();
2130 output_section_size
= 20 + num_entries
* 4;
2132 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2134 if (! bfd_set_section_size (abfd
, asec
, output_section_size
))
2136 error_message
= _("warning: unable to set size of %s section in %B");
2142 (*_bfd_error_handler
) (error_message
, ibfd
, APUINFO_SECTION_NAME
);
2145 /* Prevent the output section from accumulating the input sections'
2146 contents. We have already stored this in our linked list structure. */
2149 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2151 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2153 return (apuinfo_list_length ()
2154 && strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0);
2157 /* Finally we can generate the output section. */
2160 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2165 unsigned num_entries
;
2166 bfd_size_type length
;
2168 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2172 if (apuinfo_list_length () == 0)
2175 length
= asec
->size
;
2179 buffer
= bfd_malloc (length
);
2182 (*_bfd_error_handler
)
2183 (_("failed to allocate space for new APUinfo section."));
2187 /* Create the apuinfo header. */
2188 num_entries
= apuinfo_list_length ();
2189 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2190 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2191 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2192 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2195 for (i
= 0; i
< num_entries
; i
++)
2197 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2201 if (length
!= asec
->size
)
2202 (*_bfd_error_handler
) (_("failed to compute new APUinfo section."));
2204 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2205 (*_bfd_error_handler
) (_("failed to install new APUinfo section."));
2209 apuinfo_list_finish ();
2212 /* The following functions are specific to the ELF linker, while
2213 functions above are used generally. They appear in this file more
2214 or less in the order in which they are called. eg.
2215 ppc_elf_check_relocs is called early in the link process,
2216 ppc_elf_finish_dynamic_sections is one of the last functions
2219 /* The PPC linker needs to keep track of the number of relocs that it
2220 decides to copy as dynamic relocs in check_relocs for each symbol.
2221 This is so that it can later discard them if they are found to be
2222 unnecessary. We store the information in a field extending the
2223 regular ELF linker hash table. */
2225 struct ppc_elf_dyn_relocs
2227 struct ppc_elf_dyn_relocs
*next
;
2229 /* The input section of the reloc. */
2232 /* Total number of relocs copied for the input section. */
2233 bfd_size_type count
;
2235 /* Number of pc-relative relocs copied for the input section. */
2236 bfd_size_type pc_count
;
2239 /* Track PLT entries needed for a given symbol. We might need more
2240 than one glink entry per symbol. */
2243 struct plt_entry
*next
;
2245 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2246 This field stores the offset into .got2 used to initialise the
2247 GOT pointer reg. It will always be at least 32768 (and for
2248 current gcc this is the only offset used). */
2251 /* The .got2 section. */
2254 /* PLT refcount or offset. */
2257 bfd_signed_vma refcount
;
2261 /* .glink stub offset. */
2262 bfd_vma glink_offset
;
2265 /* Of those relocs that might be copied as dynamic relocs, this macro
2266 selects those that must be copied when linking a shared library,
2267 even when the symbol is local. */
2269 #define MUST_BE_DYN_RELOC(RTYPE) \
2270 ((RTYPE) != R_PPC_REL24 \
2271 && (RTYPE) != R_PPC_REL14 \
2272 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2273 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2274 && (RTYPE) != R_PPC_REL32)
2276 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2277 copying dynamic variables from a shared lib into an app's dynbss
2278 section, and instead use a dynamic relocation to point into the
2280 #define ELIMINATE_COPY_RELOCS 1
2282 /* PPC ELF linker hash entry. */
2284 struct ppc_elf_link_hash_entry
2286 struct elf_link_hash_entry elf
;
2288 /* If this symbol is used in the linker created sections, the processor
2289 specific backend uses this field to map the field into the offset
2290 from the beginning of the section. */
2291 elf_linker_section_pointers_t
*linker_section_pointer
;
2293 /* Track dynamic relocs copied for this symbol. */
2294 struct ppc_elf_dyn_relocs
*dyn_relocs
;
2296 /* Contexts in which symbol is used in the GOT (or TOC).
2297 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2298 corresponding relocs are encountered during check_relocs.
2299 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2300 indicate the corresponding GOT entry type is not needed. */
2301 #define TLS_GD 1 /* GD reloc. */
2302 #define TLS_LD 2 /* LD reloc. */
2303 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2304 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2305 #define TLS_TLS 16 /* Any TLS reloc. */
2306 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2309 /* Nonzero if we have seen a small data relocation referring to this
2311 unsigned char has_sda_refs
;
2314 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2316 /* PPC ELF linker hash table. */
2318 struct ppc_elf_link_hash_table
2320 struct elf_link_hash_table elf
;
2322 /* Short-cuts to get to dynamic linker sections. */
2332 elf_linker_section_t sdata
[2];
2335 /* Shortcut to .__tls_get_addr. */
2336 struct elf_link_hash_entry
*tls_get_addr
;
2338 /* TLS local dynamic got entry handling. */
2340 bfd_signed_vma refcount
;
2344 /* Offset of PltResolve function in glink. */
2345 bfd_vma glink_pltresolve
;
2347 /* Size of reserved GOT entries. */
2348 unsigned int got_header_size
;
2349 /* Non-zero if allocating the header left a gap. */
2350 unsigned int got_gap
;
2352 /* Whether to use new plt/got layout or not. */
2353 unsigned int new_plt
:1;
2354 unsigned int old_plt
:1;
2356 /* Small local sym to section mapping cache. */
2357 struct sym_sec_cache sym_sec
;
2359 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2362 /* The .got.plt section (VxWorks only)*/
2365 /* Short-cuts to frequently used symbols on VxWorks targets. */
2366 struct elf_link_hash_entry
*hplt
;
2368 /* True if the target system is VxWorks. */
2371 /* The size of PLT entries. */
2373 /* The distance between adjacent PLT slots. */
2375 /* The size of the first PLT entry. */
2376 int plt_initial_entry_size
;
2379 /* Get the PPC ELF linker hash table from a link_info structure. */
2381 #define ppc_elf_hash_table(p) \
2382 ((struct ppc_elf_link_hash_table *) (p)->hash)
2384 /* Create an entry in a PPC ELF linker hash table. */
2386 static struct bfd_hash_entry
*
2387 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2388 struct bfd_hash_table
*table
,
2391 /* Allocate the structure if it has not already been allocated by a
2395 entry
= bfd_hash_allocate (table
,
2396 sizeof (struct ppc_elf_link_hash_entry
));
2401 /* Call the allocation method of the superclass. */
2402 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
2405 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
2406 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
2407 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
2413 /* Create a PPC ELF linker hash table. */
2415 static struct bfd_link_hash_table
*
2416 ppc_elf_link_hash_table_create (bfd
*abfd
)
2418 struct ppc_elf_link_hash_table
*ret
;
2420 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
2424 if (! _bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
2425 ppc_elf_link_hash_newfunc
))
2431 ret
->elf
.init_plt_refcount
.refcount
= 0;
2432 ret
->elf
.init_plt_refcount
.glist
= NULL
;
2433 ret
->elf
.init_plt_offset
.offset
= 0;
2434 ret
->elf
.init_plt_offset
.glist
= NULL
;
2436 ret
->sdata
[0].name
= ".sdata";
2437 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
2438 ret
->sdata
[0].bss_name
= ".sbss";
2440 ret
->sdata
[1].name
= ".sdata2";
2441 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
2442 ret
->sdata
[1].bss_name
= ".sbss2";
2444 ret
->plt_entry_size
= 12;
2445 ret
->plt_slot_size
= 8;
2446 ret
->plt_initial_entry_size
= 72;
2448 ret
->is_vxworks
= 0;
2450 return &ret
->elf
.root
;
2453 /* Create .got and the related sections. */
2456 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
2458 struct ppc_elf_link_hash_table
*htab
;
2462 if (!_bfd_elf_create_got_section (abfd
, info
))
2465 htab
= ppc_elf_hash_table (info
);
2466 htab
->got
= s
= bfd_get_section_by_name (abfd
, ".got");
2470 if (htab
->is_vxworks
)
2472 htab
->sgotplt
= bfd_get_section_by_name (abfd
, ".got.plt");
2478 /* The powerpc .got has a blrl instruction in it. Mark it
2480 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
2481 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2482 if (!bfd_set_section_flags (abfd
, s
, flags
))
2486 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2487 | SEC_LINKER_CREATED
| SEC_READONLY
);
2488 htab
->relgot
= bfd_make_section_with_flags (abfd
, ".rela.got", flags
);
2490 || ! bfd_set_section_alignment (abfd
, htab
->relgot
, 2))
2496 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2497 to output sections (just like _bfd_elf_create_dynamic_sections has
2498 to create .dynbss and .rela.bss). */
2501 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2503 struct ppc_elf_link_hash_table
*htab
;
2507 htab
= ppc_elf_hash_table (info
);
2509 if (htab
->got
== NULL
2510 && !ppc_elf_create_got (abfd
, info
))
2513 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
2516 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
2517 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2519 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
| SEC_CODE
);
2522 || !bfd_set_section_alignment (abfd
, s
, 4))
2525 htab
->dynbss
= bfd_get_section_by_name (abfd
, ".dynbss");
2526 s
= bfd_make_section_with_flags (abfd
, ".dynsbss",
2527 SEC_ALLOC
| SEC_LINKER_CREATED
);
2534 htab
->relbss
= bfd_get_section_by_name (abfd
, ".rela.bss");
2535 s
= bfd_make_section_with_flags (abfd
, ".rela.sbss", flags
);
2538 || ! bfd_set_section_alignment (abfd
, s
, 2))
2542 /* Create the section for VxWorks static plt relocations. */
2543 if (htab
->is_vxworks
&& !info
->shared
)
2545 s
= bfd_make_section (abfd
, ".rela.plt.unloaded");
2546 flags
= (SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_READONLY
2547 | SEC_LINKER_CREATED
);
2549 || ! bfd_set_section_flags (abfd
, s
, flags
)
2550 || ! bfd_set_section_alignment (abfd
, s
,
2551 get_elf_backend_data (abfd
)->s
->log_file_align
))
2556 htab
->relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2557 htab
->plt
= s
= bfd_get_section_by_name (abfd
, ".plt");
2561 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
2562 return bfd_set_section_flags (abfd
, s
, flags
);
2565 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2568 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2569 struct elf_link_hash_entry
*dir
,
2570 struct elf_link_hash_entry
*ind
)
2572 struct ppc_elf_link_hash_entry
*edir
, *eind
;
2574 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
2575 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
2577 if (eind
->dyn_relocs
!= NULL
)
2579 if (edir
->dyn_relocs
!= NULL
)
2581 struct ppc_elf_dyn_relocs
**pp
;
2582 struct ppc_elf_dyn_relocs
*p
;
2584 /* Add reloc counts against the indirect sym to the direct sym
2585 list. Merge any entries against the same section. */
2586 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
2588 struct ppc_elf_dyn_relocs
*q
;
2590 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2591 if (q
->sec
== p
->sec
)
2593 q
->pc_count
+= p
->pc_count
;
2594 q
->count
+= p
->count
;
2601 *pp
= edir
->dyn_relocs
;
2604 edir
->dyn_relocs
= eind
->dyn_relocs
;
2605 eind
->dyn_relocs
= NULL
;
2608 edir
->tls_mask
|= eind
->tls_mask
;
2609 edir
->has_sda_refs
|= eind
->has_sda_refs
;
2611 /* If called to transfer flags for a weakdef during processing
2612 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2613 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2614 if (!(ELIMINATE_COPY_RELOCS
2615 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
2616 && edir
->elf
.dynamic_adjusted
))
2617 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
2619 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
2620 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
2621 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
2622 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
2624 /* If we were called to copy over info for a weak sym, that's all. */
2625 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
2628 /* Copy over the GOT refcount entries that we may have already seen to
2629 the symbol which just became indirect. */
2630 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
2631 eind
->elf
.got
.refcount
= 0;
2633 /* And plt entries. */
2634 if (eind
->elf
.plt
.plist
!= NULL
)
2636 if (edir
->elf
.plt
.plist
!= NULL
)
2638 struct plt_entry
**entp
;
2639 struct plt_entry
*ent
;
2641 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
2643 struct plt_entry
*dent
;
2645 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
2646 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
2648 dent
->plt
.refcount
+= ent
->plt
.refcount
;
2655 *entp
= edir
->elf
.plt
.plist
;
2658 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
2659 eind
->elf
.plt
.plist
= NULL
;
2662 if (eind
->elf
.dynindx
!= -1)
2664 if (edir
->elf
.dynindx
!= -1)
2665 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
2666 edir
->elf
.dynstr_index
);
2667 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
2668 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
2669 eind
->elf
.dynindx
= -1;
2670 eind
->elf
.dynstr_index
= 0;
2674 /* Return 1 if target is one of ours. */
2677 is_ppc_elf_target (const struct bfd_target
*targ
)
2679 extern const bfd_target bfd_elf32_powerpc_vec
;
2680 extern const bfd_target bfd_elf32_powerpcle_vec
;
2682 return targ
== &bfd_elf32_powerpc_vec
|| targ
== &bfd_elf32_powerpcle_vec
;
2685 /* Hook called by the linker routine which adds symbols from an object
2686 file. We use it to put .comm items in .sbss, and not .bss. */
2689 ppc_elf_add_symbol_hook (bfd
*abfd
,
2690 struct bfd_link_info
*info
,
2691 Elf_Internal_Sym
*sym
,
2692 const char **namep ATTRIBUTE_UNUSED
,
2693 flagword
*flagsp ATTRIBUTE_UNUSED
,
2697 if (sym
->st_shndx
== SHN_COMMON
2698 && !info
->relocatable
2699 && sym
->st_size
<= elf_gp_size (abfd
)
2700 && is_ppc_elf_target (info
->hash
->creator
))
2702 /* Common symbols less than or equal to -G nn bytes are automatically
2704 struct ppc_elf_link_hash_table
*htab
;
2706 htab
= ppc_elf_hash_table (info
);
2707 if (htab
->sbss
== NULL
)
2709 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
2711 if (!htab
->elf
.dynobj
)
2712 htab
->elf
.dynobj
= abfd
;
2714 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
2717 if (htab
->sbss
== NULL
)
2722 *valp
= sym
->st_size
;
2729 create_sdata_sym (struct ppc_elf_link_hash_table
*htab
,
2730 elf_linker_section_t
*lsect
)
2732 lsect
->sym
= elf_link_hash_lookup (&htab
->elf
, lsect
->sym_name
,
2734 if (lsect
->sym
== NULL
)
2736 if (lsect
->sym
->root
.type
== bfd_link_hash_new
)
2737 lsect
->sym
->non_elf
= 0;
2738 lsect
->sym
->ref_regular
= 1;
2742 /* Create a special linker section. */
2745 ppc_elf_create_linker_section (bfd
*abfd
,
2746 struct bfd_link_info
*info
,
2748 elf_linker_section_t
*lsect
)
2750 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
2753 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2754 | SEC_LINKER_CREATED
);
2756 /* Record the first bfd that needs the special sections. */
2757 if (!htab
->elf
.dynobj
)
2758 htab
->elf
.dynobj
= abfd
;
2760 s
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
2764 || !bfd_set_section_alignment (htab
->elf
.dynobj
, s
, 2))
2768 return create_sdata_sym (htab
, lsect
);
2771 /* Find a linker generated pointer with a given addend and type. */
2773 static elf_linker_section_pointers_t
*
2774 elf_find_pointer_linker_section
2775 (elf_linker_section_pointers_t
*linker_pointers
,
2777 elf_linker_section_t
*lsect
)
2779 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
2780 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
2781 return linker_pointers
;
2786 /* Allocate a pointer to live in a linker created section. */
2789 elf_create_pointer_linker_section (bfd
*abfd
,
2790 elf_linker_section_t
*lsect
,
2791 struct elf_link_hash_entry
*h
,
2792 const Elf_Internal_Rela
*rel
)
2794 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
2795 elf_linker_section_pointers_t
*linker_section_ptr
;
2796 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
2799 BFD_ASSERT (lsect
!= NULL
);
2801 /* Is this a global symbol? */
2804 struct ppc_elf_link_hash_entry
*eh
;
2806 /* Has this symbol already been allocated? If so, our work is done. */
2807 eh
= (struct ppc_elf_link_hash_entry
*) h
;
2808 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
2813 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
2817 /* Allocation of a pointer to a local symbol. */
2818 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
2820 /* Allocate a table to hold the local symbols if first time. */
2823 unsigned int num_symbols
= elf_tdata (abfd
)->symtab_hdr
.sh_info
;
2826 amt
*= sizeof (elf_linker_section_pointers_t
*);
2827 ptr
= bfd_zalloc (abfd
, amt
);
2832 elf_local_ptr_offsets (abfd
) = ptr
;
2835 /* Has this symbol already been allocated? If so, our work is done. */
2836 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
2841 ptr_linker_section_ptr
= &ptr
[r_symndx
];
2844 /* Allocate space for a pointer in the linker section, and allocate
2845 a new pointer record from internal memory. */
2846 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
2847 amt
= sizeof (elf_linker_section_pointers_t
);
2848 linker_section_ptr
= bfd_alloc (abfd
, amt
);
2850 if (!linker_section_ptr
)
2853 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
2854 linker_section_ptr
->addend
= rel
->r_addend
;
2855 linker_section_ptr
->lsect
= lsect
;
2856 *ptr_linker_section_ptr
= linker_section_ptr
;
2858 linker_section_ptr
->offset
= lsect
->section
->size
;
2859 lsect
->section
->size
+= 4;
2863 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2864 lsect
->name
, (long) linker_section_ptr
->offset
,
2865 (long) lsect
->section
->size
);
2872 update_local_sym_info (bfd
*abfd
,
2873 Elf_Internal_Shdr
*symtab_hdr
,
2874 unsigned long r_symndx
,
2877 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
2878 char *local_got_tls_masks
;
2880 if (local_got_refcounts
== NULL
)
2882 bfd_size_type size
= symtab_hdr
->sh_info
;
2884 size
*= sizeof (*local_got_refcounts
) + sizeof (*local_got_tls_masks
);
2885 local_got_refcounts
= bfd_zalloc (abfd
, size
);
2886 if (local_got_refcounts
== NULL
)
2888 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2891 local_got_refcounts
[r_symndx
] += 1;
2892 local_got_tls_masks
= (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
2893 local_got_tls_masks
[r_symndx
] |= tls_type
;
2898 update_plt_info (bfd
*abfd
, struct elf_link_hash_entry
*h
,
2899 asection
*sec
, bfd_vma addend
)
2901 struct plt_entry
*ent
;
2905 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
2906 if (ent
->sec
== sec
&& ent
->addend
== addend
)
2910 bfd_size_type amt
= sizeof (*ent
);
2911 ent
= bfd_alloc (abfd
, amt
);
2914 ent
->next
= h
->plt
.plist
;
2916 ent
->addend
= addend
;
2917 ent
->plt
.refcount
= 0;
2920 ent
->plt
.refcount
+= 1;
2924 static struct plt_entry
*
2925 find_plt_ent (struct elf_link_hash_entry
*h
, asection
*sec
, bfd_vma addend
)
2927 struct plt_entry
*ent
;
2931 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
2932 if (ent
->sec
== sec
&& ent
->addend
== addend
)
2938 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
2940 (*_bfd_error_handler
)
2941 (_("%B: relocation %s cannot be used when making a shared object"),
2943 ppc_elf_howto_table
[r_type
]->name
);
2944 bfd_set_error (bfd_error_bad_value
);
2947 /* Look through the relocs for a section during the first phase, and
2948 allocate space in the global offset table or procedure linkage
2952 ppc_elf_check_relocs (bfd
*abfd
,
2953 struct bfd_link_info
*info
,
2955 const Elf_Internal_Rela
*relocs
)
2957 struct ppc_elf_link_hash_table
*htab
;
2958 Elf_Internal_Shdr
*symtab_hdr
;
2959 struct elf_link_hash_entry
**sym_hashes
;
2960 const Elf_Internal_Rela
*rel
;
2961 const Elf_Internal_Rela
*rel_end
;
2962 asection
*got2
, *sreloc
;
2964 if (info
->relocatable
)
2967 /* Don't do anything special with non-loaded, non-alloced sections.
2968 In particular, any relocs in such sections should not affect GOT
2969 and PLT reference counting (ie. we don't allow them to create GOT
2970 or PLT entries), there's no possibility or desire to optimize TLS
2971 relocs, and there's not much point in propagating relocs to shared
2972 libs that the dynamic linker won't relocate. */
2973 if ((sec
->flags
& SEC_ALLOC
) == 0)
2977 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2981 /* Initialize howto table if not already done. */
2982 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
2983 ppc_elf_howto_init ();
2985 htab
= ppc_elf_hash_table (info
);
2986 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2987 sym_hashes
= elf_sym_hashes (abfd
);
2988 got2
= bfd_get_section_by_name (abfd
, ".got2");
2991 rel_end
= relocs
+ sec
->reloc_count
;
2992 for (rel
= relocs
; rel
< rel_end
; rel
++)
2994 unsigned long r_symndx
;
2995 enum elf_ppc_reloc_type r_type
;
2996 struct elf_link_hash_entry
*h
;
2999 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3000 if (r_symndx
< symtab_hdr
->sh_info
)
3004 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3005 while (h
->root
.type
== bfd_link_hash_indirect
3006 || h
->root
.type
== bfd_link_hash_warning
)
3007 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3010 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3011 This shows up in particular in an R_PPC_ADDR32 in the eabi
3014 && htab
->got
== NULL
3015 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3017 if (htab
->elf
.dynobj
== NULL
)
3018 htab
->elf
.dynobj
= abfd
;
3019 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3021 BFD_ASSERT (h
== htab
->elf
.hgot
);
3024 r_type
= ELF32_R_TYPE (rel
->r_info
);
3027 case R_PPC_GOT_TLSLD16
:
3028 case R_PPC_GOT_TLSLD16_LO
:
3029 case R_PPC_GOT_TLSLD16_HI
:
3030 case R_PPC_GOT_TLSLD16_HA
:
3031 htab
->tlsld_got
.refcount
+= 1;
3032 tls_type
= TLS_TLS
| TLS_LD
;
3035 case R_PPC_GOT_TLSGD16
:
3036 case R_PPC_GOT_TLSGD16_LO
:
3037 case R_PPC_GOT_TLSGD16_HI
:
3038 case R_PPC_GOT_TLSGD16_HA
:
3039 tls_type
= TLS_TLS
| TLS_GD
;
3042 case R_PPC_GOT_TPREL16
:
3043 case R_PPC_GOT_TPREL16_LO
:
3044 case R_PPC_GOT_TPREL16_HI
:
3045 case R_PPC_GOT_TPREL16_HA
:
3047 info
->flags
|= DF_STATIC_TLS
;
3048 tls_type
= TLS_TLS
| TLS_TPREL
;
3051 case R_PPC_GOT_DTPREL16
:
3052 case R_PPC_GOT_DTPREL16_LO
:
3053 case R_PPC_GOT_DTPREL16_HI
:
3054 case R_PPC_GOT_DTPREL16_HA
:
3055 tls_type
= TLS_TLS
| TLS_DTPREL
;
3057 sec
->has_tls_reloc
= 1;
3060 /* GOT16 relocations */
3062 case R_PPC_GOT16_LO
:
3063 case R_PPC_GOT16_HI
:
3064 case R_PPC_GOT16_HA
:
3065 /* This symbol requires a global offset table entry. */
3066 if (htab
->got
== NULL
)
3068 if (htab
->elf
.dynobj
== NULL
)
3069 htab
->elf
.dynobj
= abfd
;
3070 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3075 h
->got
.refcount
+= 1;
3076 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
3079 /* This is a global offset table entry for a local symbol. */
3080 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
3084 /* Indirect .sdata relocation. */
3085 case R_PPC_EMB_SDAI16
:
3088 bad_shared_reloc (abfd
, r_type
);
3091 if (htab
->sdata
[0].section
== NULL
3092 && !ppc_elf_create_linker_section (abfd
, info
, 0,
3095 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[0],
3100 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3101 h
->non_got_ref
= TRUE
;
3105 /* Indirect .sdata2 relocation. */
3106 case R_PPC_EMB_SDA2I16
:
3109 bad_shared_reloc (abfd
, r_type
);
3112 if (htab
->sdata
[1].section
== NULL
3113 && !ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3116 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[1],
3121 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3122 h
->non_got_ref
= TRUE
;
3126 case R_PPC_SDAREL16
:
3129 bad_shared_reloc (abfd
, r_type
);
3132 if (htab
->sdata
[0].sym
== NULL
3133 && !create_sdata_sym (htab
, &htab
->sdata
[0]))
3137 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3138 h
->non_got_ref
= TRUE
;
3142 case R_PPC_EMB_SDA2REL
:
3145 bad_shared_reloc (abfd
, r_type
);
3148 if (htab
->sdata
[1].sym
== NULL
3149 && !create_sdata_sym (htab
, &htab
->sdata
[1]))
3153 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3154 h
->non_got_ref
= TRUE
;
3158 case R_PPC_EMB_SDA21
:
3159 case R_PPC_EMB_RELSDA
:
3162 bad_shared_reloc (abfd
, r_type
);
3165 if (htab
->sdata
[0].sym
== NULL
3166 && !create_sdata_sym (htab
, &htab
->sdata
[0]))
3168 if (htab
->sdata
[1].sym
== NULL
3169 && !create_sdata_sym (htab
, &htab
->sdata
[1]))
3173 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3174 h
->non_got_ref
= TRUE
;
3178 case R_PPC_EMB_NADDR32
:
3179 case R_PPC_EMB_NADDR16
:
3180 case R_PPC_EMB_NADDR16_LO
:
3181 case R_PPC_EMB_NADDR16_HI
:
3182 case R_PPC_EMB_NADDR16_HA
:
3185 bad_shared_reloc (abfd
, r_type
);
3189 h
->non_got_ref
= TRUE
;
3193 case R_PPC_PLTREL24
:
3194 case R_PPC_PLTREL32
:
3195 case R_PPC_PLT16_LO
:
3196 case R_PPC_PLT16_HI
:
3197 case R_PPC_PLT16_HA
:
3199 fprintf (stderr
, "Reloc requires a PLT entry\n");
3201 /* This symbol requires a procedure linkage table entry. We
3202 actually build the entry in finish_dynamic_symbol,
3203 because this might be a case of linking PIC code without
3204 linking in any dynamic objects, in which case we don't
3205 need to generate a procedure linkage table after all. */
3209 /* It does not make sense to have a procedure linkage
3210 table entry for a local symbol. */
3211 (*_bfd_error_handler
) (_("%B(%A+0x%lx): %s reloc against "
3215 (long) rel
->r_offset
,
3216 ppc_elf_howto_table
[r_type
]->name
);
3217 bfd_set_error (bfd_error_bad_value
);
3222 bfd_vma addend
= r_type
== R_PPC_PLTREL24
? rel
->r_addend
: 0;
3225 if (!update_plt_info (abfd
, h
, got2
, addend
))
3230 /* The following relocations don't need to propagate the
3231 relocation if linking a shared object since they are
3232 section relative. */
3234 case R_PPC_SECTOFF_LO
:
3235 case R_PPC_SECTOFF_HI
:
3236 case R_PPC_SECTOFF_HA
:
3237 case R_PPC_DTPREL16
:
3238 case R_PPC_DTPREL16_LO
:
3239 case R_PPC_DTPREL16_HI
:
3240 case R_PPC_DTPREL16_HA
:
3245 case R_PPC_REL16_LO
:
3246 case R_PPC_REL16_HI
:
3247 case R_PPC_REL16_HA
:
3251 /* These are just markers. */
3253 case R_PPC_EMB_MRKREF
:
3258 /* These should only appear in dynamic objects. */
3260 case R_PPC_GLOB_DAT
:
3261 case R_PPC_JMP_SLOT
:
3262 case R_PPC_RELATIVE
:
3265 /* These aren't handled yet. We'll report an error later. */
3267 case R_PPC_EMB_RELSEC16
:
3268 case R_PPC_EMB_RELST_LO
:
3269 case R_PPC_EMB_RELST_HI
:
3270 case R_PPC_EMB_RELST_HA
:
3271 case R_PPC_EMB_BIT_FLD
:
3274 /* This refers only to functions defined in the shared library. */
3275 case R_PPC_LOCAL24PC
:
3276 if (h
&& h
== htab
->elf
.hgot
)
3280 /* This relocation describes the C++ object vtable hierarchy.
3281 Reconstruct it for later use during GC. */
3282 case R_PPC_GNU_VTINHERIT
:
3283 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3287 /* This relocation describes which C++ vtable entries are actually
3288 used. Record for later use during GC. */
3289 case R_PPC_GNU_VTENTRY
:
3290 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3294 /* We shouldn't really be seeing these. */
3297 info
->flags
|= DF_STATIC_TLS
;
3301 case R_PPC_DTPMOD32
:
3302 case R_PPC_DTPREL32
:
3306 case R_PPC_TPREL16_LO
:
3307 case R_PPC_TPREL16_HI
:
3308 case R_PPC_TPREL16_HA
:
3310 info
->flags
|= DF_STATIC_TLS
;
3316 && (sec
->flags
& SEC_CODE
) != 0
3317 && (info
->shared
|| info
->pie
)
3320 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3321 the start of a function, which assembles to a REL32
3322 reference to .got2. If we detect one of these, then
3323 force the old PLT layout because the linker cannot
3324 reliably deduce the GOT pointer value needed for
3328 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
3337 case R_PPC_REL14_BRTAKEN
:
3338 case R_PPC_REL14_BRNTAKEN
:
3341 if (h
== htab
->elf
.hgot
)
3351 case R_PPC_ADDR16_LO
:
3352 case R_PPC_ADDR16_HI
:
3353 case R_PPC_ADDR16_HA
:
3355 case R_PPC_ADDR14_BRTAKEN
:
3356 case R_PPC_ADDR14_BRNTAKEN
:
3359 if (h
!= NULL
&& !info
->shared
)
3361 /* We may need a plt entry if the symbol turns out to be
3362 a function defined in a dynamic object. */
3363 if (!update_plt_info (abfd
, h
, NULL
, 0))
3366 /* We may need a copy reloc too. */
3371 /* If we are creating a shared library, and this is a reloc
3372 against a global symbol, or a non PC relative reloc
3373 against a local symbol, then we need to copy the reloc
3374 into the shared library. However, if we are linking with
3375 -Bsymbolic, we do not need to copy a reloc against a
3376 global symbol which is defined in an object we are
3377 including in the link (i.e., DEF_REGULAR is set). At
3378 this point we have not seen all the input files, so it is
3379 possible that DEF_REGULAR is not set now but will be set
3380 later (it is never cleared). In case of a weak definition,
3381 DEF_REGULAR may be cleared later by a strong definition in
3382 a shared library. We account for that possibility below by
3383 storing information in the dyn_relocs field of the hash
3384 table entry. A similar situation occurs when creating
3385 shared libraries and symbol visibility changes render the
3388 If on the other hand, we are creating an executable, we
3389 may need to keep relocations for symbols satisfied by a
3390 dynamic library if we manage to avoid copy relocs for the
3393 && (MUST_BE_DYN_RELOC (r_type
)
3395 && (! info
->symbolic
3396 || h
->root
.type
== bfd_link_hash_defweak
3397 || !h
->def_regular
))))
3398 || (ELIMINATE_COPY_RELOCS
3401 && (h
->root
.type
== bfd_link_hash_defweak
3402 || !h
->def_regular
)))
3404 struct ppc_elf_dyn_relocs
*p
;
3405 struct ppc_elf_dyn_relocs
**head
;
3409 "ppc_elf_check_relocs needs to "
3410 "create relocation for %s\n",
3411 (h
&& h
->root
.root
.string
3412 ? h
->root
.root
.string
: "<unknown>"));
3418 name
= (bfd_elf_string_from_elf_section
3420 elf_elfheader (abfd
)->e_shstrndx
,
3421 elf_section_data (sec
)->rel_hdr
.sh_name
));
3425 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
3426 && strcmp (bfd_get_section_name (abfd
, sec
),
3429 if (htab
->elf
.dynobj
== NULL
)
3430 htab
->elf
.dynobj
= abfd
;
3431 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
3436 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
3437 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
3438 | SEC_ALLOC
| SEC_LOAD
);
3439 sreloc
= bfd_make_section_with_flags (htab
->elf
.dynobj
,
3443 || ! bfd_set_section_alignment (htab
->elf
.dynobj
,
3447 elf_section_data (sec
)->sreloc
= sreloc
;
3450 /* If this is a global symbol, we count the number of
3451 relocations we need for this symbol. */
3454 head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
3458 /* Track dynamic relocs needed for local syms too.
3459 We really need local syms available to do this
3465 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
3470 vpp
= &elf_section_data (s
)->local_dynrel
;
3471 head
= (struct ppc_elf_dyn_relocs
**) vpp
;
3475 if (p
== NULL
|| p
->sec
!= sec
)
3477 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
3488 if (!MUST_BE_DYN_RELOC (r_type
))
3499 /* Merge backend specific data from an object file to the output
3500 object file when linking. */
3503 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3509 if (!is_ppc_elf_target (ibfd
->xvec
)
3510 || !is_ppc_elf_target (obfd
->xvec
))
3513 /* Check if we have the same endianess. */
3514 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
3517 new_flags
= elf_elfheader (ibfd
)->e_flags
;
3518 old_flags
= elf_elfheader (obfd
)->e_flags
;
3519 if (!elf_flags_init (obfd
))
3521 /* First call, no flags set. */
3522 elf_flags_init (obfd
) = TRUE
;
3523 elf_elfheader (obfd
)->e_flags
= new_flags
;
3526 /* Compatible flags are ok. */
3527 else if (new_flags
== old_flags
)
3530 /* Incompatible flags. */
3533 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3534 to be linked with either. */
3536 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
3537 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
3540 (*_bfd_error_handler
)
3541 (_("%B: compiled with -mrelocatable and linked with "
3542 "modules compiled normally"), ibfd
);
3544 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
3545 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
3548 (*_bfd_error_handler
)
3549 (_("%B: compiled normally and linked with "
3550 "modules compiled with -mrelocatable"), ibfd
);
3553 /* The output is -mrelocatable-lib iff both the input files are. */
3554 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
3555 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
3557 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3558 but each input file is either -mrelocatable or -mrelocatable-lib. */
3559 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
3560 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
3561 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
3562 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
3564 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3565 any module uses it. */
3566 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
3568 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
3569 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
3571 /* Warn about any other mismatches. */
3572 if (new_flags
!= old_flags
)
3575 (*_bfd_error_handler
)
3576 (_("%B: uses different e_flags (0x%lx) fields "
3577 "than previous modules (0x%lx)"),
3578 ibfd
, (long) new_flags
, (long) old_flags
);
3583 bfd_set_error (bfd_error_bad_value
);
3591 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3592 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3594 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3595 struct bfd_link_info
*info
,
3598 struct ppc_elf_link_hash_table
*htab
;
3601 htab
= ppc_elf_hash_table (info
);
3602 if (force_old_plt
|| !htab
->new_plt
)
3605 if (htab
->is_vxworks
)
3607 /* The VxWorks PLT is a loaded section with contents. */
3608 flags
= SEC_ALLOC
| SEC_CODE
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
3609 | SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3611 if (htab
->plt
!= NULL
3612 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
3615 else if (!htab
->old_plt
)
3617 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
3618 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3620 /* The new PLT is a loaded section. */
3621 if (htab
->plt
!= NULL
3622 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
3625 /* The new GOT is not executable. */
3626 if (htab
->got
!= NULL
3627 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
3632 /* Stop an unused .glink section from affecting .text alignment. */
3633 if (htab
->glink
!= NULL
3634 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
3637 return !htab
->old_plt
;
3640 /* Return the section that should be marked against GC for a given
3644 ppc_elf_gc_mark_hook (asection
*sec
,
3645 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3646 Elf_Internal_Rela
*rel
,
3647 struct elf_link_hash_entry
*h
,
3648 Elf_Internal_Sym
*sym
)
3652 switch (ELF32_R_TYPE (rel
->r_info
))
3654 case R_PPC_GNU_VTINHERIT
:
3655 case R_PPC_GNU_VTENTRY
:
3659 switch (h
->root
.type
)
3661 case bfd_link_hash_defined
:
3662 case bfd_link_hash_defweak
:
3663 return h
->root
.u
.def
.section
;
3665 case bfd_link_hash_common
:
3666 return h
->root
.u
.c
.p
->section
;
3674 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
3679 /* Update the got, plt and dynamic reloc reference counts for the
3680 section being removed. */
3683 ppc_elf_gc_sweep_hook (bfd
*abfd
,
3684 struct bfd_link_info
*info
,
3686 const Elf_Internal_Rela
*relocs
)
3688 struct ppc_elf_link_hash_table
*htab
;
3689 Elf_Internal_Shdr
*symtab_hdr
;
3690 struct elf_link_hash_entry
**sym_hashes
;
3691 bfd_signed_vma
*local_got_refcounts
;
3692 const Elf_Internal_Rela
*rel
, *relend
;
3695 if ((sec
->flags
& SEC_ALLOC
) == 0)
3698 elf_section_data (sec
)->local_dynrel
= NULL
;
3700 htab
= ppc_elf_hash_table (info
);
3701 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3702 sym_hashes
= elf_sym_hashes (abfd
);
3703 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3704 got2
= bfd_get_section_by_name (abfd
, ".got2");
3706 relend
= relocs
+ sec
->reloc_count
;
3707 for (rel
= relocs
; rel
< relend
; rel
++)
3709 unsigned long r_symndx
;
3710 enum elf_ppc_reloc_type r_type
;
3711 struct elf_link_hash_entry
*h
= NULL
;
3713 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3714 if (r_symndx
>= symtab_hdr
->sh_info
)
3716 struct ppc_elf_dyn_relocs
**pp
, *p
;
3717 struct ppc_elf_link_hash_entry
*eh
;
3719 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3720 while (h
->root
.type
== bfd_link_hash_indirect
3721 || h
->root
.type
== bfd_link_hash_warning
)
3722 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3723 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3725 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
3728 /* Everything must go for SEC. */
3734 r_type
= ELF32_R_TYPE (rel
->r_info
);
3737 case R_PPC_GOT_TLSLD16
:
3738 case R_PPC_GOT_TLSLD16_LO
:
3739 case R_PPC_GOT_TLSLD16_HI
:
3740 case R_PPC_GOT_TLSLD16_HA
:
3741 htab
->tlsld_got
.refcount
-= 1;
3744 case R_PPC_GOT_TLSGD16
:
3745 case R_PPC_GOT_TLSGD16_LO
:
3746 case R_PPC_GOT_TLSGD16_HI
:
3747 case R_PPC_GOT_TLSGD16_HA
:
3748 case R_PPC_GOT_TPREL16
:
3749 case R_PPC_GOT_TPREL16_LO
:
3750 case R_PPC_GOT_TPREL16_HI
:
3751 case R_PPC_GOT_TPREL16_HA
:
3752 case R_PPC_GOT_DTPREL16
:
3753 case R_PPC_GOT_DTPREL16_LO
:
3754 case R_PPC_GOT_DTPREL16_HI
:
3755 case R_PPC_GOT_DTPREL16_HA
:
3757 case R_PPC_GOT16_LO
:
3758 case R_PPC_GOT16_HI
:
3759 case R_PPC_GOT16_HA
:
3762 if (h
->got
.refcount
> 0)
3765 else if (local_got_refcounts
!= NULL
)
3767 if (local_got_refcounts
[r_symndx
] > 0)
3768 local_got_refcounts
[r_symndx
]--;
3774 case R_PPC_REL14_BRTAKEN
:
3775 case R_PPC_REL14_BRNTAKEN
:
3777 if (h
== NULL
|| h
== htab
->elf
.hgot
)
3784 case R_PPC_ADDR16_LO
:
3785 case R_PPC_ADDR16_HI
:
3786 case R_PPC_ADDR16_HA
:
3788 case R_PPC_ADDR14_BRTAKEN
:
3789 case R_PPC_ADDR14_BRNTAKEN
:
3796 case R_PPC_PLTREL24
:
3797 case R_PPC_PLTREL32
:
3798 case R_PPC_PLT16_LO
:
3799 case R_PPC_PLT16_HI
:
3800 case R_PPC_PLT16_HA
:
3803 bfd_vma addend
= r_type
== R_PPC_PLTREL24
? rel
->r_addend
: 0;
3804 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
3805 if (ent
->plt
.refcount
> 0)
3806 ent
->plt
.refcount
-= 1;
3817 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3820 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
3822 struct ppc_elf_link_hash_table
*htab
;
3824 htab
= ppc_elf_hash_table (info
);
3826 && htab
->plt
!= NULL
3827 && htab
->plt
->output_section
!= NULL
)
3829 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
3830 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
3833 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3834 FALSE
, FALSE
, TRUE
);
3835 return _bfd_elf_tls_setup (obfd
, info
);
3838 /* Run through all the TLS relocs looking for optimization
3842 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
3843 struct bfd_link_info
*info
)
3847 struct ppc_elf_link_hash_table
*htab
;
3849 if (info
->relocatable
|| info
->shared
)
3852 htab
= ppc_elf_hash_table (info
);
3853 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
3855 Elf_Internal_Sym
*locsyms
= NULL
;
3856 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
3858 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
3859 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
3861 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
3862 int expecting_tls_get_addr
;
3864 /* Read the relocations. */
3865 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
3867 if (relstart
== NULL
)
3870 expecting_tls_get_addr
= 0;
3871 relend
= relstart
+ sec
->reloc_count
;
3872 for (rel
= relstart
; rel
< relend
; rel
++)
3874 enum elf_ppc_reloc_type r_type
;
3875 unsigned long r_symndx
;
3876 struct elf_link_hash_entry
*h
= NULL
;
3878 char tls_set
, tls_clear
;
3879 bfd_boolean is_local
;
3881 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3882 if (r_symndx
>= symtab_hdr
->sh_info
)
3884 struct elf_link_hash_entry
**sym_hashes
;
3886 sym_hashes
= elf_sym_hashes (ibfd
);
3887 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3888 while (h
->root
.type
== bfd_link_hash_indirect
3889 || h
->root
.type
== bfd_link_hash_warning
)
3890 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3898 r_type
= ELF32_R_TYPE (rel
->r_info
);
3901 case R_PPC_GOT_TLSLD16
:
3902 case R_PPC_GOT_TLSLD16_LO
:
3903 case R_PPC_GOT_TLSLD16_HI
:
3904 case R_PPC_GOT_TLSLD16_HA
:
3905 /* These relocs should never be against a symbol
3906 defined in a shared lib. Leave them alone if
3907 that turns out to be the case. */
3908 expecting_tls_get_addr
= 0;
3909 htab
->tlsld_got
.refcount
-= 1;
3916 expecting_tls_get_addr
= 1;
3919 case R_PPC_GOT_TLSGD16
:
3920 case R_PPC_GOT_TLSGD16_LO
:
3921 case R_PPC_GOT_TLSGD16_HI
:
3922 case R_PPC_GOT_TLSGD16_HA
:
3928 tls_set
= TLS_TLS
| TLS_TPRELGD
;
3930 expecting_tls_get_addr
= 1;
3933 case R_PPC_GOT_TPREL16
:
3934 case R_PPC_GOT_TPREL16_LO
:
3935 case R_PPC_GOT_TPREL16_HI
:
3936 case R_PPC_GOT_TPREL16_HA
:
3937 expecting_tls_get_addr
= 0;
3942 tls_clear
= TLS_TPREL
;
3949 case R_PPC_REL14_BRTAKEN
:
3950 case R_PPC_REL14_BRNTAKEN
:
3952 if (expecting_tls_get_addr
3954 && h
== htab
->tls_get_addr
)
3956 struct plt_entry
*ent
= find_plt_ent (h
, NULL
, 0);
3957 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
3958 ent
->plt
.refcount
-= 1;
3960 expecting_tls_get_addr
= 0;
3964 expecting_tls_get_addr
= 0;
3972 /* We managed to get rid of a got entry. */
3973 if (h
->got
.refcount
> 0)
3974 h
->got
.refcount
-= 1;
3976 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
3980 Elf_Internal_Sym
*sym
;
3981 bfd_signed_vma
*lgot_refs
;
3984 if (locsyms
== NULL
)
3986 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3987 if (locsyms
== NULL
)
3988 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
3989 symtab_hdr
->sh_info
,
3990 0, NULL
, NULL
, NULL
);
3991 if (locsyms
== NULL
)
3993 if (elf_section_data (sec
)->relocs
!= relstart
)
3998 sym
= locsyms
+ r_symndx
;
3999 lgot_refs
= elf_local_got_refcounts (ibfd
);
4000 if (lgot_refs
== NULL
)
4004 /* We managed to get rid of a got entry. */
4005 if (lgot_refs
[r_symndx
] > 0)
4006 lgot_refs
[r_symndx
] -= 1;
4008 lgot_masks
= (char *) (lgot_refs
+ symtab_hdr
->sh_info
);
4009 tls_mask
= &lgot_masks
[r_symndx
];
4012 *tls_mask
|= tls_set
;
4013 *tls_mask
&= ~tls_clear
;
4016 if (elf_section_data (sec
)->relocs
!= relstart
)
4021 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
4023 if (!info
->keep_memory
)
4026 symtab_hdr
->contents
= (unsigned char *) locsyms
;
4032 /* Adjust a symbol defined by a dynamic object and referenced by a
4033 regular object. The current definition is in some section of the
4034 dynamic object, but we're not including those sections. We have to
4035 change the definition to something the rest of the link can
4039 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4040 struct elf_link_hash_entry
*h
)
4042 struct ppc_elf_link_hash_table
*htab
;
4044 unsigned int power_of_two
;
4047 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4048 h
->root
.root
.string
);
4051 /* Make sure we know what is going on here. */
4052 htab
= ppc_elf_hash_table (info
);
4053 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
4055 || h
->u
.weakdef
!= NULL
4058 && !h
->def_regular
)));
4060 /* Deal with function syms. */
4061 if (h
->type
== STT_FUNC
4064 /* Clear procedure linkage table information for any symbol that
4065 won't need a .plt entry. */
4066 struct plt_entry
*ent
;
4067 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4068 if (ent
->plt
.refcount
> 0)
4071 || SYMBOL_CALLS_LOCAL (info
, h
)
4072 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4073 && h
->root
.type
== bfd_link_hash_undefweak
))
4075 /* A PLT entry is not required/allowed when:
4077 1. We are not using ld.so; because then the PLT entry
4078 can't be set up, so we can't use one. In this case,
4079 ppc_elf_adjust_dynamic_symbol won't even be called.
4081 2. GC has rendered the entry unused.
4083 3. We know for certain that a call to this symbol
4084 will go to this object, or will remain undefined. */
4085 h
->plt
.plist
= NULL
;
4091 h
->plt
.plist
= NULL
;
4093 /* If this is a weak symbol, and there is a real definition, the
4094 processor independent code will have arranged for us to see the
4095 real definition first, and we can just use the same value. */
4096 if (h
->u
.weakdef
!= NULL
)
4098 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4099 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4100 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4101 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4102 if (ELIMINATE_COPY_RELOCS
)
4103 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
4107 /* This is a reference to a symbol defined by a dynamic object which
4108 is not a function. */
4110 /* If we are creating a shared library, we must presume that the
4111 only references to the symbol are via the global offset table.
4112 For such cases we need not do anything here; the relocations will
4113 be handled correctly by relocate_section. */
4117 /* If there are no references to this symbol that do not use the
4118 GOT, we don't need to generate a copy reloc. */
4119 if (!h
->non_got_ref
)
4122 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4123 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4124 do this if there are any small data relocations. */
4125 if (ELIMINATE_COPY_RELOCS
4126 && !ppc_elf_hash_entry (h
)->has_sda_refs
)
4128 struct ppc_elf_dyn_relocs
*p
;
4129 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4131 s
= p
->sec
->output_section
;
4132 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
4145 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
4146 h
->root
.root
.string
);
4150 /* We must allocate the symbol in our .dynbss section, which will
4151 become part of the .bss section of the executable. There will be
4152 an entry for this symbol in the .dynsym section. The dynamic
4153 object will contain position independent code, so all references
4154 from the dynamic object to this symbol will go through the global
4155 offset table. The dynamic linker will use the .dynsym entry to
4156 determine the address it must put in the global offset table, so
4157 both the dynamic object and the regular object will refer to the
4158 same memory location for the variable.
4160 Of course, if the symbol is referenced using SDAREL relocs, we
4161 must instead allocate it in .sbss. */
4163 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4167 BFD_ASSERT (s
!= NULL
);
4169 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4170 copy the initial value out of the dynamic object and into the
4171 runtime process image. We need to remember the offset into the
4172 .rela.bss section we are going to use. */
4173 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4177 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4178 srel
= htab
->relsbss
;
4180 srel
= htab
->relbss
;
4181 BFD_ASSERT (srel
!= NULL
);
4182 srel
->size
+= sizeof (Elf32_External_Rela
);
4186 /* We need to figure out the alignment required for this symbol. I
4187 have no idea how ELF linkers handle this. */
4188 power_of_two
= bfd_log2 (h
->size
);
4189 if (power_of_two
> 4)
4192 /* Apply the required alignment. */
4193 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
4194 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
4196 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
4200 /* Define the symbol as being at this point in the section. */
4201 h
->root
.u
.def
.section
= s
;
4202 h
->root
.u
.def
.value
= s
->size
;
4204 /* Increment the section size to make room for the symbol. */
4210 /* Allocate NEED contiguous space in .got, and return the offset.
4211 Handles allocation of the got header when crossing 32k. */
4214 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
4217 unsigned int max_before_header
= 32768;
4220 max_before_header
= 32764;
4222 if (htab
->is_vxworks
)
4224 where
= htab
->got
->size
;
4225 htab
->got
->size
+= need
;
4227 else if (need
<= htab
->got_gap
)
4229 where
= max_before_header
- htab
->got_gap
;
4230 htab
->got_gap
-= need
;
4234 if (htab
->got
->size
+ need
> max_before_header
4235 && htab
->got
->size
<= max_before_header
)
4237 htab
->got_gap
= max_before_header
- htab
->got
->size
;
4238 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
4240 where
= htab
->got
->size
;
4241 htab
->got
->size
+= need
;
4246 /* Allocate space in associated reloc sections for dynamic relocs. */
4249 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
4251 struct bfd_link_info
*info
= inf
;
4252 struct ppc_elf_link_hash_entry
*eh
;
4253 struct ppc_elf_link_hash_table
*htab
;
4254 struct ppc_elf_dyn_relocs
*p
;
4256 if (h
->root
.type
== bfd_link_hash_indirect
)
4259 if (h
->root
.type
== bfd_link_hash_warning
)
4260 /* When warning symbols are created, they **replace** the "real"
4261 entry in the hash table, thus we never get to see the real
4262 symbol in a hash traversal. So look at it now. */
4263 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4265 htab
= ppc_elf_hash_table (info
);
4266 if (htab
->elf
.dynamic_sections_created
)
4268 struct plt_entry
*ent
;
4269 bfd_boolean doneone
= FALSE
;
4270 bfd_vma plt_offset
= 0, glink_offset
= 0;
4272 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4273 if (ent
->plt
.refcount
> 0)
4275 /* Make sure this symbol is output as a dynamic symbol. */
4276 if (h
->dynindx
== -1
4277 && !h
->forced_local
)
4279 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4284 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
4286 asection
*s
= htab
->plt
;
4288 if (!(htab
->old_plt
|| htab
->is_vxworks
))
4292 plt_offset
= s
->size
;
4295 ent
->plt
.offset
= plt_offset
;
4298 if (!doneone
|| info
->shared
|| info
->pie
)
4300 glink_offset
= s
->size
;
4301 s
->size
+= GLINK_ENTRY_SIZE
;
4307 h
->root
.u
.def
.section
= s
;
4308 h
->root
.u
.def
.value
= glink_offset
;
4310 ent
->glink_offset
= glink_offset
;
4316 /* If this is the first .plt entry, make room
4317 for the special first entry. */
4319 s
->size
+= htab
->plt_initial_entry_size
;
4321 /* The PowerPC PLT is actually composed of two
4322 parts, the first part is 2 words (for a load
4323 and a jump), and then there is a remaining
4324 word available at the end. */
4325 plt_offset
= (htab
->plt_initial_entry_size
4326 + (htab
->plt_slot_size
4328 - htab
->plt_initial_entry_size
)
4329 / htab
->plt_entry_size
)));
4331 /* If this symbol is not defined in a regular
4332 file, and we are not generating a shared
4333 library, then set the symbol to this location
4334 in the .plt. This is required to make
4335 function pointers compare as equal between
4336 the normal executable and the shared library. */
4340 h
->root
.u
.def
.section
= s
;
4341 h
->root
.u
.def
.value
= plt_offset
;
4344 /* Make room for this entry. */
4345 s
->size
+= htab
->plt_entry_size
;
4346 /* After the 8192nd entry, room for two entries
4348 if (!htab
->is_vxworks
4349 && (s
->size
- htab
->plt_initial_entry_size
)
4350 / htab
->plt_entry_size
4351 > PLT_NUM_SINGLE_ENTRIES
)
4352 s
->size
+= htab
->plt_entry_size
;
4354 ent
->plt
.offset
= plt_offset
;
4357 /* We also need to make an entry in the .rela.plt section. */
4360 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
4362 if (htab
->is_vxworks
)
4364 /* Allocate space for the unloaded relocations. */
4368 == (bfd_vma
) htab
->plt_initial_entry_size
)
4370 htab
->srelplt2
->size
4371 += sizeof (Elf32_External_Rela
)
4372 * VXWORKS_PLTRESOLVE_RELOCS
;
4375 htab
->srelplt2
->size
4376 += sizeof (Elf32_External_Rela
)
4377 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
;
4380 /* Every PLT entry has an associated GOT entry in
4382 htab
->sgotplt
->size
+= 4;
4388 ent
->plt
.offset
= (bfd_vma
) -1;
4392 h
->plt
.plist
= NULL
;
4399 h
->plt
.plist
= NULL
;
4403 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4404 if (eh
->elf
.got
.refcount
> 0)
4406 /* Make sure this symbol is output as a dynamic symbol. */
4407 if (eh
->elf
.dynindx
== -1
4408 && !eh
->elf
.forced_local
)
4410 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
4414 if (eh
->tls_mask
== (TLS_TLS
| TLS_LD
)
4415 && !eh
->elf
.def_dynamic
)
4416 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4417 eh
->elf
.got
.offset
= (bfd_vma
) -1;
4421 unsigned int need
= 0;
4422 if ((eh
->tls_mask
& TLS_TLS
) != 0)
4424 if ((eh
->tls_mask
& TLS_LD
) != 0)
4426 if ((eh
->tls_mask
& TLS_GD
) != 0)
4428 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
4430 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
4435 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
4436 dyn
= htab
->elf
.dynamic_sections_created
;
4438 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
4439 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
4440 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
4442 /* All the entries we allocated need relocs.
4443 Except LD only needs one. */
4444 if ((eh
->tls_mask
& TLS_LD
) != 0)
4446 htab
->relgot
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
4451 eh
->elf
.got
.offset
= (bfd_vma
) -1;
4453 if (eh
->dyn_relocs
== NULL
)
4456 /* In the shared -Bsymbolic case, discard space allocated for
4457 dynamic pc-relative relocs against symbols which turn out to be
4458 defined in regular objects. For the normal shared case, discard
4459 space for relocs that have become local due to symbol visibility
4464 /* Relocs that use pc_count are those that appear on a call insn,
4465 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4466 generated via assembly. We want calls to protected symbols to
4467 resolve directly to the function rather than going via the plt.
4468 If people want function pointer comparisons to work as expected
4469 then they should avoid writing weird assembly. */
4470 if (SYMBOL_CALLS_LOCAL (info
, h
))
4472 struct ppc_elf_dyn_relocs
**pp
;
4474 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
4476 p
->count
-= p
->pc_count
;
4485 /* Also discard relocs on undefined weak syms with non-default
4487 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4488 && h
->root
.type
== bfd_link_hash_undefweak
)
4489 eh
->dyn_relocs
= NULL
;
4491 /* Make sure undefined weak symbols are output as a dynamic symbol
4494 && eh
->dyn_relocs
!= NULL
4496 && h
->root
.type
== bfd_link_hash_undefweak
4497 && !h
->forced_local
)
4499 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4503 else if (ELIMINATE_COPY_RELOCS
)
4505 /* For the non-shared case, discard space for relocs against
4506 symbols which turn out to need copy relocs or are not
4513 /* Make sure this symbol is output as a dynamic symbol.
4514 Undefined weak syms won't yet be marked as dynamic. */
4515 if (h
->dynindx
== -1
4516 && !h
->forced_local
)
4518 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4522 /* If that succeeded, we know we'll be keeping all the
4524 if (h
->dynindx
!= -1)
4528 eh
->dyn_relocs
= NULL
;
4533 /* Finally, allocate space. */
4534 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4536 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
4537 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
4543 /* Find any dynamic relocs that apply to read-only sections. */
4546 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *info
)
4548 struct ppc_elf_dyn_relocs
*p
;
4550 if (h
->root
.type
== bfd_link_hash_indirect
)
4553 if (h
->root
.type
== bfd_link_hash_warning
)
4554 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4556 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4558 asection
*s
= p
->sec
->output_section
;
4561 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
4562 == (SEC_READONLY
| SEC_ALLOC
)))
4564 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
4566 /* Not an error, just cut short the traversal. */
4573 /* Set the sizes of the dynamic sections. */
4576 ppc_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4577 struct bfd_link_info
*info
)
4579 struct ppc_elf_link_hash_table
*htab
;
4585 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
4588 htab
= ppc_elf_hash_table (info
);
4589 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
4591 if (elf_hash_table (info
)->dynamic_sections_created
)
4593 /* Set the contents of the .interp section to the interpreter. */
4594 if (info
->executable
)
4596 s
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".interp");
4597 BFD_ASSERT (s
!= NULL
);
4598 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
4599 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
4604 htab
->got_header_size
= 16;
4606 htab
->got_header_size
= 12;
4608 /* Set up .got offsets for local syms, and space for local dynamic
4610 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4612 bfd_signed_vma
*local_got
;
4613 bfd_signed_vma
*end_local_got
;
4615 bfd_size_type locsymcount
;
4616 Elf_Internal_Shdr
*symtab_hdr
;
4618 if (!is_ppc_elf_target (ibfd
->xvec
))
4621 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
4623 struct ppc_elf_dyn_relocs
*p
;
4625 for (p
= ((struct ppc_elf_dyn_relocs
*)
4626 elf_section_data (s
)->local_dynrel
);
4630 if (!bfd_is_abs_section (p
->sec
)
4631 && bfd_is_abs_section (p
->sec
->output_section
))
4633 /* Input section has been discarded, either because
4634 it is a copy of a linkonce section or due to
4635 linker script /DISCARD/, so we'll be discarding
4638 else if (p
->count
!= 0)
4640 elf_section_data (p
->sec
)->sreloc
->size
4641 += p
->count
* sizeof (Elf32_External_Rela
);
4642 if ((p
->sec
->output_section
->flags
4643 & (SEC_READONLY
| SEC_ALLOC
))
4644 == (SEC_READONLY
| SEC_ALLOC
))
4645 info
->flags
|= DF_TEXTREL
;
4650 local_got
= elf_local_got_refcounts (ibfd
);
4654 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
4655 locsymcount
= symtab_hdr
->sh_info
;
4656 end_local_got
= local_got
+ locsymcount
;
4657 lgot_masks
= (char *) end_local_got
;
4658 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
4661 if (*lgot_masks
== (TLS_TLS
| TLS_LD
))
4663 /* If just an LD reloc, we'll just use
4664 htab->tlsld_got.offset. */
4665 htab
->tlsld_got
.refcount
+= 1;
4666 *local_got
= (bfd_vma
) -1;
4670 unsigned int need
= 0;
4671 if ((*lgot_masks
& TLS_TLS
) != 0)
4673 if ((*lgot_masks
& TLS_GD
) != 0)
4675 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
4677 if ((*lgot_masks
& TLS_DTPREL
) != 0)
4682 *local_got
= allocate_got (htab
, need
);
4684 htab
->relgot
->size
+= (need
4685 * (sizeof (Elf32_External_Rela
) / 4));
4689 *local_got
= (bfd_vma
) -1;
4692 if (htab
->tlsld_got
.refcount
> 0)
4694 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
4696 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
4699 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
4701 if (htab
->is_vxworks
)
4703 /* Save the PLT symbol in the hash table for easy access.
4704 Mark GOT and PLT syms as having relocations; they might not,
4705 but we won't know for sure until we build the GOT in
4706 finish_dynamic_symbol. */
4709 htab
->elf
.hgot
->indx
= -2;
4710 htab
->hplt
= elf_link_hash_lookup (elf_hash_table (info
),
4711 "_PROCEDURE_LINKAGE_TABLE_",
4712 FALSE
, FALSE
, FALSE
);
4714 htab
->hplt
->indx
= -2;
4715 /* If the PLT is executable then give the symbol function type. */
4716 if (htab
->hplt
&& htab
->plt
->flags
& SEC_CODE
)
4717 htab
->hplt
->type
= STT_FUNC
;
4720 /* Allocate space for global sym dynamic relocs. */
4721 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
4723 if (htab
->got
!= NULL
&& !htab
->is_vxworks
)
4725 unsigned int g_o_t
= 32768;
4727 /* If we haven't allocated the header, do so now. When we get here,
4728 for old plt/got the got size will be 0 to 32764 (not allocated),
4729 or 32780 to 65536 (header allocated). For new plt/got, the
4730 corresponding ranges are 0 to 32768 and 32780 to 65536. */
4731 if (htab
->got
->size
<= 32768)
4733 g_o_t
= htab
->got
->size
;
4736 htab
->got
->size
+= htab
->got_header_size
;
4739 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
4742 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
4744 htab
->glink_pltresolve
= htab
->glink
->size
;
4745 /* Space for the branch table. */
4746 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
4747 /* Pad out to align the start of PLTresolve. */
4748 htab
->glink
->size
+= -htab
->glink
->size
& 15;
4749 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
4752 /* We've now determined the sizes of the various dynamic sections.
4753 Allocate memory for them. */
4755 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
4757 bfd_boolean strip_section
= TRUE
;
4759 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
4765 || s
== htab
->sgotplt
4767 || s
== htab
->dynbss
4768 || s
== htab
->dynsbss
)
4770 /* We'd like to strip these sections if they aren't needed, but if
4771 we've exported dynamic symbols from them we must leave them.
4772 It's too late to tell BFD to get rid of the symbols. */
4773 if ((s
== htab
->plt
|| s
== htab
->got
) && htab
->hplt
!= NULL
)
4774 strip_section
= FALSE
;
4775 /* Strip this section if we don't need it; see the
4778 else if (s
== htab
->sdata
[0].section
4779 || s
== htab
->sdata
[1].section
)
4781 /* Strip these too. */
4783 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
4787 /* Remember whether there are any relocation sections. */
4790 /* We use the reloc_count field as a counter if we need
4791 to copy relocs into the output file. */
4797 /* It's not one of our sections, so don't allocate space. */
4801 if (s
->size
== 0 && strip_section
)
4803 /* If we don't need this section, strip it from the
4804 output file. This is mostly to handle .rela.bss and
4805 .rela.plt. We must create both sections in
4806 create_dynamic_sections, because they must be created
4807 before the linker maps input sections to output
4808 sections. The linker does that before
4809 adjust_dynamic_symbol is called, and it is that
4810 function which decides whether anything needs to go
4811 into these sections. */
4812 s
->flags
|= SEC_EXCLUDE
;
4816 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
4819 /* Allocate memory for the section contents. */
4820 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
4821 if (s
->contents
== NULL
)
4825 if (htab
->elf
.dynamic_sections_created
)
4827 /* Add some entries to the .dynamic section. We fill in the
4828 values later, in ppc_elf_finish_dynamic_sections, but we
4829 must add the entries now so that we get the correct size for
4830 the .dynamic section. The DT_DEBUG entry is filled in by the
4831 dynamic linker and used by the debugger. */
4832 #define add_dynamic_entry(TAG, VAL) \
4833 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4835 if (info
->executable
)
4837 if (!add_dynamic_entry (DT_DEBUG
, 0))
4841 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
4843 if (!add_dynamic_entry (DT_PLTGOT
, 0)
4844 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
4845 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
4846 || !add_dynamic_entry (DT_JMPREL
, 0))
4850 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
4852 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
4858 if (!add_dynamic_entry (DT_RELA
, 0)
4859 || !add_dynamic_entry (DT_RELASZ
, 0)
4860 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
4864 /* If any dynamic relocs apply to a read-only section, then we
4865 need a DT_TEXTREL entry. */
4866 if ((info
->flags
& DF_TEXTREL
) == 0)
4867 elf_link_hash_traverse (elf_hash_table (info
), readonly_dynrelocs
,
4870 if ((info
->flags
& DF_TEXTREL
) != 0)
4872 if (!add_dynamic_entry (DT_TEXTREL
, 0))
4876 #undef add_dynamic_entry
4881 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4883 static const int shared_stub_entry
[] =
4885 0x7c0802a6, /* mflr 0 */
4886 0x429f0005, /* bcl 20, 31, .Lxxx */
4887 0x7d6802a6, /* mflr 11 */
4888 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4889 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4890 0x7c0803a6, /* mtlr 0 */
4891 0x7d6903a6, /* mtctr 11 */
4892 0x4e800420, /* bctr */
4895 static const int stub_entry
[] =
4897 0x3d600000, /* lis 11,xxx@ha */
4898 0x396b0000, /* addi 11,11,xxx@l */
4899 0x7d6903a6, /* mtctr 11 */
4900 0x4e800420, /* bctr */
4904 ppc_elf_relax_section (bfd
*abfd
,
4906 struct bfd_link_info
*link_info
,
4911 struct one_fixup
*next
;
4917 Elf_Internal_Shdr
*symtab_hdr
;
4918 bfd_byte
*contents
= NULL
;
4919 Elf_Internal_Sym
*isymbuf
= NULL
;
4920 Elf_Internal_Rela
*internal_relocs
= NULL
;
4921 Elf_Internal_Rela
*irel
, *irelend
;
4922 struct one_fixup
*fixups
= NULL
;
4923 bfd_boolean changed
;
4924 struct ppc_elf_link_hash_table
*htab
;
4925 bfd_size_type trampoff
;
4930 /* Nothing to do if there are no relocations, and no need to do
4931 anything with non-alloc sections. */
4932 if ((isec
->flags
& SEC_ALLOC
) == 0
4933 || (isec
->flags
& SEC_RELOC
) == 0
4934 || isec
->reloc_count
== 0)
4937 trampoff
= (isec
->size
+ 3) & (bfd_vma
) -4;
4938 /* Space for a branch around any trampolines. */
4941 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4943 /* Get a copy of the native relocations. */
4944 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
4945 link_info
->keep_memory
);
4946 if (internal_relocs
== NULL
)
4949 htab
= ppc_elf_hash_table (link_info
);
4950 got2
= bfd_get_section_by_name (abfd
, ".got2");
4952 irelend
= internal_relocs
+ isec
->reloc_count
;
4953 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
4955 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
4956 bfd_vma symaddr
, reladdr
, toff
, roff
;
4958 struct one_fixup
*f
;
4959 size_t insn_offset
= 0;
4960 bfd_vma max_branch_offset
, val
;
4963 unsigned char sym_type
;
4968 case R_PPC_LOCAL24PC
:
4969 case R_PPC_PLTREL24
:
4970 max_branch_offset
= 1 << 25;
4974 case R_PPC_REL14_BRTAKEN
:
4975 case R_PPC_REL14_BRNTAKEN
:
4976 max_branch_offset
= 1 << 15;
4983 /* Get the value of the symbol referred to by the reloc. */
4984 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
4986 /* A local symbol. */
4987 Elf_Internal_Sym
*isym
;
4989 /* Read this BFD's local symbols. */
4990 if (isymbuf
== NULL
)
4992 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4993 if (isymbuf
== NULL
)
4994 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
4995 symtab_hdr
->sh_info
, 0,
5000 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
5001 if (isym
->st_shndx
== SHN_UNDEF
)
5002 continue; /* We can't do anything with undefined symbols. */
5003 else if (isym
->st_shndx
== SHN_ABS
)
5004 tsec
= bfd_abs_section_ptr
;
5005 else if (isym
->st_shndx
== SHN_COMMON
)
5006 tsec
= bfd_com_section_ptr
;
5008 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5010 toff
= isym
->st_value
;
5011 sym_type
= ELF_ST_TYPE (isym
->st_info
);
5015 /* Global symbol handling. */
5017 struct elf_link_hash_entry
*h
;
5019 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
5020 h
= elf_sym_hashes (abfd
)[indx
];
5022 while (h
->root
.type
== bfd_link_hash_indirect
5023 || h
->root
.type
== bfd_link_hash_warning
)
5024 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5028 if (r_type
== R_PPC_PLTREL24
5029 && htab
->plt
!= NULL
)
5031 struct plt_entry
*ent
= find_plt_ent (h
, got2
, irel
->r_addend
);
5038 toff
= ent
->glink_offset
;
5043 toff
= ent
->plt
.offset
;
5049 else if (h
->root
.type
== bfd_link_hash_defined
5050 || h
->root
.type
== bfd_link_hash_defweak
)
5052 tsec
= h
->root
.u
.def
.section
;
5053 toff
= h
->root
.u
.def
.value
;
5061 /* If the branch and target are in the same section, you have
5062 no hope of adding stubs. We'll error out later should the
5067 /* There probably isn't any reason to handle symbols in
5068 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5069 attribute for a code section, and we are only looking at
5070 branches. However, implement it correctly here as a
5071 reference for other target relax_section functions. */
5072 if (0 && tsec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
5074 /* At this stage in linking, no SEC_MERGE symbol has been
5075 adjusted, so all references to such symbols need to be
5076 passed through _bfd_merged_section_offset. (Later, in
5077 relocate_section, all SEC_MERGE symbols *except* for
5078 section symbols have been adjusted.)
5080 gas may reduce relocations against symbols in SEC_MERGE
5081 sections to a relocation against the section symbol when
5082 the original addend was zero. When the reloc is against
5083 a section symbol we should include the addend in the
5084 offset passed to _bfd_merged_section_offset, since the
5085 location of interest is the original symbol. On the
5086 other hand, an access to "sym+addend" where "sym" is not
5087 a section symbol should not include the addend; Such an
5088 access is presumed to be an offset from "sym"; The
5089 location of interest is just "sym". */
5090 if (sym_type
== STT_SECTION
)
5091 toff
+= irel
->r_addend
;
5093 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
5094 elf_section_data (tsec
)->sec_info
,
5097 if (sym_type
!= STT_SECTION
)
5098 toff
+= irel
->r_addend
;
5100 /* PLTREL24 addends are special. */
5101 else if (r_type
!= R_PPC_PLTREL24
)
5102 toff
+= irel
->r_addend
;
5104 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
5106 roff
= irel
->r_offset
;
5107 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
5109 /* If the branch is in range, no need to do anything. */
5110 if (symaddr
- reladdr
+ max_branch_offset
< 2 * max_branch_offset
)
5113 /* Look for an existing fixup to this address. */
5114 for (f
= fixups
; f
; f
= f
->next
)
5115 if (f
->tsec
== tsec
&& f
->toff
== toff
)
5121 unsigned long stub_rtype
;
5123 val
= trampoff
- roff
;
5124 if (val
>= max_branch_offset
)
5125 /* Oh dear, we can't reach a trampoline. Don't try to add
5126 one. We'll report an error later. */
5129 if (link_info
->shared
)
5131 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
5133 stub_rtype
= R_PPC_RELAX32PC
;
5137 size
= 4 * ARRAY_SIZE (stub_entry
);
5139 stub_rtype
= R_PPC_RELAX32
;
5142 if (R_PPC_RELAX32_PLT
- R_PPC_RELAX32
5143 != R_PPC_RELAX32PC_PLT
- R_PPC_RELAX32PC
)
5145 if (tsec
== htab
->plt
5146 || tsec
== htab
->glink
)
5147 stub_rtype
+= R_PPC_RELAX32_PLT
- R_PPC_RELAX32
;
5149 /* Hijack the old relocation. Since we need two
5150 relocations for this use a "composite" reloc. */
5151 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
5153 irel
->r_offset
= trampoff
+ insn_offset
;
5155 /* Record the fixup so we don't do it again this section. */
5156 f
= bfd_malloc (sizeof (*f
));
5160 f
->trampoff
= trampoff
;
5167 val
= f
->trampoff
- roff
;
5168 if (val
>= max_branch_offset
)
5171 /* Nop out the reloc, since we're finalizing things here. */
5172 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
5175 /* Get the section contents. */
5176 if (contents
== NULL
)
5178 /* Get cached copy if it exists. */
5179 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
5180 contents
= elf_section_data (isec
)->this_hdr
.contents
;
5183 /* Go get them off disk. */
5184 if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
5189 /* Fix up the existing branch to hit the trampoline. */
5190 hit_addr
= contents
+ roff
;
5194 case R_PPC_LOCAL24PC
:
5195 case R_PPC_PLTREL24
:
5196 t0
= bfd_get_32 (abfd
, hit_addr
);
5198 t0
|= val
& 0x3fffffc;
5199 bfd_put_32 (abfd
, t0
, hit_addr
);
5203 case R_PPC_REL14_BRTAKEN
:
5204 case R_PPC_REL14_BRNTAKEN
:
5205 t0
= bfd_get_32 (abfd
, hit_addr
);
5208 bfd_put_32 (abfd
, t0
, hit_addr
);
5213 /* Write out the trampolines. */
5214 changed
= fixups
!= NULL
;
5224 struct one_fixup
*f
= fixups
;
5225 fixups
= fixups
->next
;
5230 contents
= bfd_realloc (contents
, trampoff
);
5231 if (contents
== NULL
)
5234 isec
->size
= (isec
->size
+ 3) & (bfd_vma
) -4;
5235 /* Branch around the trampolines. */
5236 val
= trampoff
- isec
->size
+ 0x48000000;
5237 dest
= contents
+ isec
->size
;
5238 isec
->size
= trampoff
;
5239 bfd_put_32 (abfd
, val
, dest
);
5242 if (link_info
->shared
)
5244 stub
= shared_stub_entry
;
5245 size
= ARRAY_SIZE (shared_stub_entry
);
5250 size
= ARRAY_SIZE (stub_entry
);
5254 while (dest
< contents
+ trampoff
)
5256 bfd_put_32 (abfd
, stub
[i
], dest
);
5262 BFD_ASSERT (i
== 0);
5266 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5268 if (! link_info
->keep_memory
)
5272 /* Cache the symbols for elf_link_input_bfd. */
5273 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
5277 if (contents
!= NULL
5278 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
5280 if (!changed
&& !link_info
->keep_memory
)
5284 /* Cache the section contents for elf_link_input_bfd. */
5285 elf_section_data (isec
)->this_hdr
.contents
= contents
;
5289 if (elf_section_data (isec
)->relocs
!= internal_relocs
)
5292 free (internal_relocs
);
5294 elf_section_data (isec
)->relocs
= internal_relocs
;
5301 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
5303 if (contents
!= NULL
5304 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
5306 if (internal_relocs
!= NULL
5307 && elf_section_data (isec
)->relocs
!= internal_relocs
)
5308 free (internal_relocs
);
5312 /* What to do when ld finds relocations against symbols defined in
5313 discarded sections. */
5316 ppc_elf_action_discarded (asection
*sec
)
5318 if (strcmp (".fixup", sec
->name
) == 0)
5321 if (strcmp (".got2", sec
->name
) == 0)
5324 return _bfd_elf_default_action_discarded (sec
);
5327 /* Fill in the address for a pointer generated in a linker section. */
5330 elf_finish_pointer_linker_section (bfd
*input_bfd
,
5331 elf_linker_section_t
*lsect
,
5332 struct elf_link_hash_entry
*h
,
5334 const Elf_Internal_Rela
*rel
)
5336 elf_linker_section_pointers_t
*linker_section_ptr
;
5338 BFD_ASSERT (lsect
!= NULL
);
5342 /* Handle global symbol. */
5343 struct ppc_elf_link_hash_entry
*eh
;
5345 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5346 BFD_ASSERT (eh
->elf
.def_regular
);
5347 linker_section_ptr
= eh
->linker_section_pointer
;
5351 /* Handle local symbol. */
5352 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
5354 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
5355 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
5358 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
5361 BFD_ASSERT (linker_section_ptr
!= NULL
);
5363 /* Offset will always be a multiple of four, so use the bottom bit
5364 as a "written" flag. */
5365 if ((linker_section_ptr
->offset
& 1) == 0)
5367 bfd_put_32 (lsect
->section
->owner
,
5368 relocation
+ linker_section_ptr
->addend
,
5369 lsect
->section
->contents
+ linker_section_ptr
->offset
);
5370 linker_section_ptr
->offset
+= 1;
5373 relocation
= (lsect
->section
->output_offset
5374 + linker_section_ptr
->offset
- 1
5379 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5380 lsect
->name
, (long) relocation
, (long) relocation
);
5383 /* Subtract out the addend, because it will get added back in by the normal
5385 return relocation
- linker_section_ptr
->addend
;
5388 /* The RELOCATE_SECTION function is called by the ELF backend linker
5389 to handle the relocations for a section.
5391 The relocs are always passed as Rela structures; if the section
5392 actually uses Rel structures, the r_addend field will always be
5395 This function is responsible for adjust the section contents as
5396 necessary, and (if using Rela relocs and generating a
5397 relocatable output file) adjusting the reloc addend as
5400 This function does not have to worry about setting the reloc
5401 address or the reloc symbol index.
5403 LOCAL_SYMS is a pointer to the swapped in local symbols.
5405 LOCAL_SECTIONS is an array giving the section in the input file
5406 corresponding to the st_shndx field of each local symbol.
5408 The global hash table entry for the global symbols can be found
5409 via elf_sym_hashes (input_bfd).
5411 When generating relocatable output, this function must handle
5412 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5413 going to be the section symbol corresponding to the output
5414 section, which means that the addend must be adjusted
5418 ppc_elf_relocate_section (bfd
*output_bfd
,
5419 struct bfd_link_info
*info
,
5421 asection
*input_section
,
5423 Elf_Internal_Rela
*relocs
,
5424 Elf_Internal_Sym
*local_syms
,
5425 asection
**local_sections
)
5427 Elf_Internal_Shdr
*symtab_hdr
;
5428 struct elf_link_hash_entry
**sym_hashes
;
5429 struct ppc_elf_link_hash_table
*htab
;
5430 Elf_Internal_Rela
*rel
;
5431 Elf_Internal_Rela
*relend
;
5432 Elf_Internal_Rela outrel
;
5434 asection
*got2
, *sreloc
= NULL
;
5435 bfd_vma
*local_got_offsets
;
5436 bfd_boolean ret
= TRUE
;
5439 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5440 "%ld relocations%s",
5441 input_bfd
, input_section
,
5442 (long) input_section
->reloc_count
,
5443 (info
->relocatable
) ? " (relocatable)" : "");
5446 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
5448 if (info
->relocatable
)
5454 relend
= relocs
+ input_section
->reloc_count
;
5455 for (; rel
< relend
; rel
++)
5457 enum elf_ppc_reloc_type r_type
;
5459 r_type
= ELF32_R_TYPE (rel
->r_info
);
5460 if (r_type
== R_PPC_PLTREL24
5461 && rel
->r_addend
>= 32768)
5463 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5464 addend specifies the GOT pointer offset within .got2. */
5465 rel
->r_addend
+= got2
->output_offset
;
5471 /* Initialize howto table if not already done. */
5472 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
5473 ppc_elf_howto_init ();
5475 htab
= ppc_elf_hash_table (info
);
5476 local_got_offsets
= elf_local_got_offsets (input_bfd
);
5477 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
5478 sym_hashes
= elf_sym_hashes (input_bfd
);
5480 relend
= relocs
+ input_section
->reloc_count
;
5481 for (; rel
< relend
; rel
++)
5483 enum elf_ppc_reloc_type r_type
;
5485 bfd_reloc_status_type r
;
5486 Elf_Internal_Sym
*sym
;
5488 struct elf_link_hash_entry
*h
;
5489 const char *sym_name
;
5490 reloc_howto_type
*howto
;
5491 unsigned long r_symndx
;
5493 bfd_vma branch_bit
, insn
, from
;
5494 bfd_boolean unresolved_reloc
;
5496 unsigned int tls_type
, tls_mask
, tls_gd
;
5498 r_type
= ELF32_R_TYPE (rel
->r_info
);
5502 unresolved_reloc
= FALSE
;
5504 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5506 if (r_symndx
< symtab_hdr
->sh_info
)
5508 sym
= local_syms
+ r_symndx
;
5509 sec
= local_sections
[r_symndx
];
5510 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
5512 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
5516 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
5517 r_symndx
, symtab_hdr
, sym_hashes
,
5519 unresolved_reloc
, warned
);
5521 sym_name
= h
->root
.root
.string
;
5524 /* TLS optimizations. Replace instruction sequences and relocs
5525 based on information we collected in tls_optimize. We edit
5526 RELOCS so that --emit-relocs will output something sensible
5527 for the final instruction stream. */
5530 if (IS_PPC_TLS_RELOC (r_type
))
5533 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
5534 else if (local_got_offsets
!= NULL
)
5537 lgot_masks
= (char *) (local_got_offsets
+ symtab_hdr
->sh_info
);
5538 tls_mask
= lgot_masks
[r_symndx
];
5542 /* Ensure reloc mapping code below stays sane. */
5543 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
5544 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
5545 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
5546 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
5547 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
5548 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
5549 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
5550 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
5557 case R_PPC_GOT_TPREL16
:
5558 case R_PPC_GOT_TPREL16_LO
:
5560 && (tls_mask
& TLS_TPREL
) == 0)
5563 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
5565 insn
|= 0x3c020000; /* addis 0,2,0 */
5566 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
5567 r_type
= R_PPC_TPREL16_HA
;
5568 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5574 && (tls_mask
& TLS_TPREL
) == 0)
5577 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
5578 if ((insn
& ((31 << 26) | (31 << 11)))
5579 == ((31 << 26) | (2 << 11)))
5580 rtra
= insn
& ((1 << 26) - (1 << 16));
5581 else if ((insn
& ((31 << 26) | (31 << 16)))
5582 == ((31 << 26) | (2 << 16)))
5583 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
5586 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
5589 else if ((insn
& (31 << 1)) == 23 << 1
5590 && ((insn
& (31 << 6)) < 14 << 6
5591 || ((insn
& (31 << 6)) >= 16 << 6
5592 && (insn
& (31 << 6)) < 24 << 6)))
5593 /* load and store indexed -> dform. */
5594 insn
= (32 | ((insn
>> 6) & 31)) << 26;
5595 else if ((insn
& (31 << 1)) == 21 << 1
5596 && (insn
& (0x1a << 6)) == 0)
5597 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5598 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
5599 | ((insn
>> 6) & 1));
5600 else if ((insn
& (31 << 1)) == 21 << 1
5601 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
5603 insn
= (58 << 26) | 2;
5607 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
5608 r_type
= R_PPC_TPREL16_LO
;
5609 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5610 /* Was PPC_TLS which sits on insn boundary, now
5611 PPC_TPREL16_LO which is at insn+2. */
5616 case R_PPC_GOT_TLSGD16_HI
:
5617 case R_PPC_GOT_TLSGD16_HA
:
5618 tls_gd
= TLS_TPRELGD
;
5619 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
5623 case R_PPC_GOT_TLSLD16_HI
:
5624 case R_PPC_GOT_TLSLD16_HA
:
5625 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
5628 if ((tls_mask
& tls_gd
) != 0)
5629 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
5630 + R_PPC_GOT_TPREL16
);
5633 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
5635 r_type
= R_PPC_NONE
;
5637 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5641 case R_PPC_GOT_TLSGD16
:
5642 case R_PPC_GOT_TLSGD16_LO
:
5643 tls_gd
= TLS_TPRELGD
;
5644 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
5645 goto tls_get_addr_check
;
5648 case R_PPC_GOT_TLSLD16
:
5649 case R_PPC_GOT_TLSLD16_LO
:
5650 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
5653 if (rel
+ 1 < relend
)
5655 enum elf_ppc_reloc_type r_type2
;
5656 unsigned long r_symndx2
;
5657 struct elf_link_hash_entry
*h2
;
5658 bfd_vma insn1
, insn2
;
5661 /* The next instruction should be a call to
5662 __tls_get_addr. Peek at the reloc to be sure. */
5663 r_type2
= ELF32_R_TYPE (rel
[1].r_info
);
5664 r_symndx2
= ELF32_R_SYM (rel
[1].r_info
);
5665 if (r_symndx2
< symtab_hdr
->sh_info
5666 || (r_type2
!= R_PPC_REL14
5667 && r_type2
!= R_PPC_REL14_BRTAKEN
5668 && r_type2
!= R_PPC_REL14_BRNTAKEN
5669 && r_type2
!= R_PPC_REL24
5670 && r_type2
!= R_PPC_PLTREL24
))
5673 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
5674 while (h2
->root
.type
== bfd_link_hash_indirect
5675 || h2
->root
.type
== bfd_link_hash_warning
)
5676 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
5677 if (h2
== NULL
|| h2
!= htab
->tls_get_addr
)
5680 /* OK, it checks out. Replace the call. */
5681 offset
= rel
[1].r_offset
;
5682 insn1
= bfd_get_32 (output_bfd
,
5683 contents
+ rel
->r_offset
- 2);
5684 if ((tls_mask
& tls_gd
) != 0)
5687 insn1
&= (1 << 26) - 1;
5688 insn1
|= 32 << 26; /* lwz */
5689 insn2
= 0x7c631214; /* add 3,3,2 */
5690 rel
[1].r_info
= ELF32_R_INFO (r_symndx2
, R_PPC_NONE
);
5691 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
5692 + R_PPC_GOT_TPREL16
);
5693 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5698 insn1
= 0x3c620000; /* addis 3,2,0 */
5699 insn2
= 0x38630000; /* addi 3,3,0 */
5702 /* Was an LD reloc. */
5704 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
5705 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
5707 r_type
= R_PPC_TPREL16_HA
;
5708 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5709 rel
[1].r_info
= ELF32_R_INFO (r_symndx
,
5711 rel
[1].r_offset
+= 2;
5713 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
5714 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
5717 /* We changed the symbol on an LD reloc. Start over
5718 in order to get h, sym, sec etc. right. */
5727 /* Handle other relocations that tweak non-addend part of insn. */
5734 /* Branch taken prediction relocations. */
5735 case R_PPC_ADDR14_BRTAKEN
:
5736 case R_PPC_REL14_BRTAKEN
:
5737 branch_bit
= BRANCH_PREDICT_BIT
;
5740 /* Branch not taken prediction relocations. */
5741 case R_PPC_ADDR14_BRNTAKEN
:
5742 case R_PPC_REL14_BRNTAKEN
:
5743 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
5744 insn
&= ~BRANCH_PREDICT_BIT
;
5747 from
= (rel
->r_offset
5748 + input_section
->output_offset
5749 + input_section
->output_section
->vma
);
5751 /* Invert 'y' bit if not the default. */
5752 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
5753 insn
^= BRANCH_PREDICT_BIT
;
5755 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
5759 addend
= rel
->r_addend
;
5762 if (r_type
< R_PPC_max
)
5763 howto
= ppc_elf_howto_table
[r_type
];
5767 (*_bfd_error_handler
)
5768 (_("%B: unknown relocation type %d for symbol %s"),
5769 input_bfd
, (int) r_type
, sym_name
);
5771 bfd_set_error (bfd_error_bad_value
);
5777 case R_PPC_EMB_MRKREF
:
5778 case R_PPC_GNU_VTINHERIT
:
5779 case R_PPC_GNU_VTENTRY
:
5782 /* GOT16 relocations. Like an ADDR16 using the symbol's
5783 address in the GOT as relocation value instead of the
5784 symbol's value itself. Also, create a GOT entry for the
5785 symbol and put the symbol value there. */
5786 case R_PPC_GOT_TLSGD16
:
5787 case R_PPC_GOT_TLSGD16_LO
:
5788 case R_PPC_GOT_TLSGD16_HI
:
5789 case R_PPC_GOT_TLSGD16_HA
:
5790 tls_type
= TLS_TLS
| TLS_GD
;
5793 case R_PPC_GOT_TLSLD16
:
5794 case R_PPC_GOT_TLSLD16_LO
:
5795 case R_PPC_GOT_TLSLD16_HI
:
5796 case R_PPC_GOT_TLSLD16_HA
:
5797 tls_type
= TLS_TLS
| TLS_LD
;
5800 case R_PPC_GOT_TPREL16
:
5801 case R_PPC_GOT_TPREL16_LO
:
5802 case R_PPC_GOT_TPREL16_HI
:
5803 case R_PPC_GOT_TPREL16_HA
:
5804 tls_type
= TLS_TLS
| TLS_TPREL
;
5807 case R_PPC_GOT_DTPREL16
:
5808 case R_PPC_GOT_DTPREL16_LO
:
5809 case R_PPC_GOT_DTPREL16_HI
:
5810 case R_PPC_GOT_DTPREL16_HA
:
5811 tls_type
= TLS_TLS
| TLS_DTPREL
;
5815 case R_PPC_GOT16_LO
:
5816 case R_PPC_GOT16_HI
:
5817 case R_PPC_GOT16_HA
:
5820 /* Relocation is to the entry for this symbol in the global
5826 if (htab
->got
== NULL
)
5830 if (tls_type
== (TLS_TLS
| TLS_LD
)
5832 || !h
->def_dynamic
))
5833 offp
= &htab
->tlsld_got
.offset
;
5837 dyn
= htab
->elf
.dynamic_sections_created
;
5838 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
5840 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
5841 /* This is actually a static link, or it is a
5842 -Bsymbolic link and the symbol is defined
5843 locally, or the symbol was forced to be local
5844 because of a version file. */
5849 unresolved_reloc
= FALSE
;
5851 offp
= &h
->got
.offset
;
5855 if (local_got_offsets
== NULL
)
5857 offp
= &local_got_offsets
[r_symndx
];
5860 /* The offset must always be a multiple of 4. We use the
5861 least significant bit to record whether we have already
5862 processed this entry. */
5868 unsigned int tls_m
= (tls_mask
5869 & (TLS_LD
| TLS_GD
| TLS_DTPREL
5870 | TLS_TPREL
| TLS_TPRELGD
));
5872 if (offp
== &htab
->tlsld_got
.offset
)
5878 /* We might have multiple got entries for this sym.
5879 Initialize them all. */
5884 if ((tls_m
& TLS_LD
) != 0)
5886 tls_ty
= TLS_TLS
| TLS_LD
;
5889 else if ((tls_m
& TLS_GD
) != 0)
5891 tls_ty
= TLS_TLS
| TLS_GD
;
5894 else if ((tls_m
& TLS_DTPREL
) != 0)
5896 tls_ty
= TLS_TLS
| TLS_DTPREL
;
5897 tls_m
&= ~TLS_DTPREL
;
5899 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5901 tls_ty
= TLS_TLS
| TLS_TPREL
;
5905 /* Generate relocs for the dynamic linker. */
5906 if ((info
->shared
|| indx
!= 0)
5908 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5909 || h
->root
.type
!= bfd_link_hash_undefweak
))
5911 outrel
.r_offset
= (htab
->got
->output_section
->vma
5912 + htab
->got
->output_offset
5914 outrel
.r_addend
= 0;
5915 if (tls_ty
& (TLS_LD
| TLS_GD
))
5917 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
5918 if (tls_ty
== (TLS_TLS
| TLS_GD
))
5920 loc
= htab
->relgot
->contents
;
5921 loc
+= (htab
->relgot
->reloc_count
++
5922 * sizeof (Elf32_External_Rela
));
5923 bfd_elf32_swap_reloca_out (output_bfd
,
5925 outrel
.r_offset
+= 4;
5927 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
5930 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
5931 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
5932 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
5933 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
5935 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_RELATIVE
);
5937 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
5940 outrel
.r_addend
+= relocation
;
5941 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
5942 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
5944 loc
= htab
->relgot
->contents
;
5945 loc
+= (htab
->relgot
->reloc_count
++
5946 * sizeof (Elf32_External_Rela
));
5947 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
5950 /* Init the .got section contents if we're not
5951 emitting a reloc. */
5954 bfd_vma value
= relocation
;
5956 if (tls_ty
== (TLS_TLS
| TLS_LD
))
5958 else if (tls_ty
!= 0)
5960 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
5961 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
5962 value
+= DTP_OFFSET
- TP_OFFSET
;
5964 if (tls_ty
== (TLS_TLS
| TLS_GD
))
5966 bfd_put_32 (output_bfd
, value
,
5967 htab
->got
->contents
+ off
+ 4);
5971 bfd_put_32 (output_bfd
, value
,
5972 htab
->got
->contents
+ off
);
5976 if (tls_ty
& (TLS_LD
| TLS_GD
))
5985 if (off
>= (bfd_vma
) -2)
5988 if ((tls_type
& TLS_TLS
) != 0)
5990 if (tls_type
!= (TLS_TLS
| TLS_LD
))
5992 if ((tls_mask
& TLS_LD
) != 0
5994 || !h
->def_dynamic
))
5996 if (tls_type
!= (TLS_TLS
| TLS_GD
))
5998 if ((tls_mask
& TLS_GD
) != 0)
6000 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
6002 if ((tls_mask
& TLS_DTPREL
) != 0)
6009 relocation
= htab
->got
->output_offset
+ off
;
6010 relocation
-= htab
->elf
.hgot
->root
.u
.def
.value
;
6012 /* Addends on got relocations don't make much sense.
6013 x+off@got is actually x@got+off, and since the got is
6014 generated by a hash table traversal, the value in the
6015 got at entry m+n bears little relation to the entry m. */
6017 (*_bfd_error_handler
)
6018 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6021 (long) rel
->r_offset
,
6027 /* Relocations that need no special processing. */
6028 case R_PPC_LOCAL24PC
:
6029 /* It makes no sense to point a local relocation
6030 at a symbol not in this object. */
6031 if (unresolved_reloc
)
6033 if (! (*info
->callbacks
->undefined_symbol
) (info
,
6034 h
->root
.root
.string
,
6044 case R_PPC_DTPREL16
:
6045 case R_PPC_DTPREL16_LO
:
6046 case R_PPC_DTPREL16_HI
:
6047 case R_PPC_DTPREL16_HA
:
6048 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6051 /* Relocations that may need to be propagated if this is a shared
6054 case R_PPC_TPREL16_LO
:
6055 case R_PPC_TPREL16_HI
:
6056 case R_PPC_TPREL16_HA
:
6057 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
6058 /* The TPREL16 relocs shouldn't really be used in shared
6059 libs as they will result in DT_TEXTREL being set, but
6060 support them anyway. */
6064 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
6067 case R_PPC_DTPREL32
:
6068 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6071 case R_PPC_DTPMOD32
:
6077 case R_PPC_REL16_LO
:
6078 case R_PPC_REL16_HI
:
6079 case R_PPC_REL16_HA
:
6085 case R_PPC_REL14_BRTAKEN
:
6086 case R_PPC_REL14_BRNTAKEN
:
6087 /* If these relocations are not to a named symbol, they can be
6088 handled right here, no need to bother the dynamic linker. */
6089 if (SYMBOL_REFERENCES_LOCAL (info
, h
)
6090 || h
== htab
->elf
.hgot
)
6094 /* Relocations that always need to be propagated if this is a shared
6099 case R_PPC_ADDR16_LO
:
6100 case R_PPC_ADDR16_HI
:
6101 case R_PPC_ADDR16_HA
:
6103 case R_PPC_ADDR14_BRTAKEN
:
6104 case R_PPC_ADDR14_BRNTAKEN
:
6107 /* r_symndx will be zero only for relocs against symbols
6108 from removed linkonce sections, or sections discarded by
6115 if ((input_section
->flags
& SEC_ALLOC
) == 0)
6121 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6122 || h
->root
.type
!= bfd_link_hash_undefweak
)
6123 && (MUST_BE_DYN_RELOC (r_type
)
6124 || !SYMBOL_CALLS_LOCAL (info
, h
)))
6125 || (ELIMINATE_COPY_RELOCS
6131 && !h
->def_regular
))
6136 fprintf (stderr
, "ppc_elf_relocate_section needs to "
6137 "create relocation for %s\n",
6138 (h
&& h
->root
.root
.string
6139 ? h
->root
.root
.string
: "<unknown>"));
6142 /* When generating a shared object, these relocations
6143 are copied into the output file to be resolved at run
6149 name
= (bfd_elf_string_from_elf_section
6151 elf_elfheader (input_bfd
)->e_shstrndx
,
6152 elf_section_data (input_section
)->rel_hdr
.sh_name
));
6156 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
6157 && strcmp (bfd_get_section_name (input_bfd
,
6161 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
6162 BFD_ASSERT (sreloc
!= NULL
);
6168 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
6170 if (outrel
.r_offset
== (bfd_vma
) -1
6171 || outrel
.r_offset
== (bfd_vma
) -2)
6172 skip
= (int) outrel
.r_offset
;
6173 outrel
.r_offset
+= (input_section
->output_section
->vma
6174 + input_section
->output_offset
);
6177 memset (&outrel
, 0, sizeof outrel
);
6178 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
6180 unresolved_reloc
= FALSE
;
6181 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
6182 outrel
.r_addend
= rel
->r_addend
;
6186 outrel
.r_addend
= relocation
+ rel
->r_addend
;
6188 if (r_type
== R_PPC_ADDR32
)
6189 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
6194 if (bfd_is_abs_section (sec
))
6196 else if (sec
== NULL
|| sec
->owner
== NULL
)
6198 bfd_set_error (bfd_error_bad_value
);
6205 /* We are turning this relocation into one
6206 against a section symbol. It would be
6207 proper to subtract the symbol's value,
6208 osec->vma, from the emitted reloc addend,
6209 but ld.so expects buggy relocs. */
6210 osec
= sec
->output_section
;
6211 indx
= elf_section_data (osec
)->dynindx
;
6212 BFD_ASSERT (indx
> 0);
6215 printf ("indx=%d section=%s flags=%08x name=%s\n",
6216 indx
, osec
->name
, osec
->flags
,
6217 h
->root
.root
.string
);
6221 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
6225 loc
= sreloc
->contents
;
6226 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6227 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
6232 /* This reloc will be computed at runtime. We clear the memory
6233 so that it contains predictable value. */
6235 && ((input_section
->flags
& SEC_ALLOC
) != 0
6236 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
6238 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
6245 case R_PPC_RELAX32PC_PLT
:
6246 case R_PPC_RELAX32_PLT
:
6248 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
6251 relocation
= (htab
->glink
->output_section
->vma
6252 + htab
->glink
->output_offset
6253 + ent
->glink_offset
);
6255 relocation
= (htab
->plt
->output_section
->vma
6256 + htab
->plt
->output_offset
6260 if (r_type
== R_PPC_RELAX32_PLT
)
6264 case R_PPC_RELAX32PC
:
6265 relocation
-= (input_section
->output_section
->vma
6266 + input_section
->output_offset
6267 + rel
->r_offset
- 4);
6276 t0
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6277 t1
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
+ 4);
6279 /* We're clearing the bits for R_PPC_ADDR16_HA
6280 and R_PPC_ADDR16_LO here. */
6284 /* t0 is HA, t1 is LO */
6285 relocation
+= addend
;
6286 t0
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
6287 t1
|= relocation
& 0xffff;
6289 bfd_put_32 (output_bfd
, t0
, contents
+ rel
->r_offset
);
6290 bfd_put_32 (output_bfd
, t1
, contents
+ rel
->r_offset
+ 4);
6294 /* Indirect .sdata relocation. */
6295 case R_PPC_EMB_SDAI16
:
6296 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
6298 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
6299 h
, relocation
, rel
);
6302 /* Indirect .sdata2 relocation. */
6303 case R_PPC_EMB_SDA2I16
:
6304 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
6306 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
6307 h
, relocation
, rel
);
6310 /* Handle the TOC16 reloc. We want to use the offset within the .got
6311 section, not the actual VMA. This is appropriate when generating
6312 an embedded ELF object, for which the .got section acts like the
6313 AIX .toc section. */
6314 case R_PPC_TOC16
: /* phony GOT16 relocations */
6315 BFD_ASSERT (sec
!= NULL
);
6316 BFD_ASSERT (bfd_is_und_section (sec
)
6317 || strcmp (bfd_get_section_name (abfd
, sec
), ".got") == 0
6318 || strcmp (bfd_get_section_name (abfd
, sec
), ".cgot") == 0);
6320 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
6323 case R_PPC_PLTREL24
:
6324 /* Relocation is to the entry for this symbol in the
6325 procedure linkage table. */
6327 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
6331 || htab
->plt
== NULL
)
6333 /* We didn't make a PLT entry for this symbol. This
6334 happens when statically linking PIC code, or when
6335 using -Bsymbolic. */
6339 unresolved_reloc
= FALSE
;
6341 relocation
= (htab
->glink
->output_section
->vma
6342 + htab
->glink
->output_offset
6343 + ent
->glink_offset
);
6345 relocation
= (htab
->plt
->output_section
->vma
6346 + htab
->plt
->output_offset
6351 /* Relocate against _SDA_BASE_. */
6352 case R_PPC_SDAREL16
:
6355 struct elf_link_hash_entry
*sh
;
6357 BFD_ASSERT (sec
!= NULL
);
6358 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6359 if (! ((strncmp (name
, ".sdata", 6) == 0
6360 && (name
[6] == 0 || name
[6] == '.'))
6361 || (strncmp (name
, ".sbss", 5) == 0
6362 && (name
[5] == 0 || name
[5] == '.'))))
6364 (*_bfd_error_handler
)
6365 (_("%B: the target (%s) of a %s relocation is "
6366 "in the wrong output section (%s)"),
6372 sh
= htab
->sdata
[0].sym
;
6373 addend
-= (sh
->root
.u
.def
.value
6374 + sh
->root
.u
.def
.section
->output_offset
6375 + sh
->root
.u
.def
.section
->output_section
->vma
);
6379 /* Relocate against _SDA2_BASE_. */
6380 case R_PPC_EMB_SDA2REL
:
6383 struct elf_link_hash_entry
*sh
;
6385 BFD_ASSERT (sec
!= NULL
);
6386 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6387 if (! (strncmp (name
, ".sdata2", 7) == 0
6388 || strncmp (name
, ".sbss2", 6) == 0))
6390 (*_bfd_error_handler
)
6391 (_("%B: the target (%s) of a %s relocation is "
6392 "in the wrong output section (%s)"),
6398 bfd_set_error (bfd_error_bad_value
);
6402 sh
= htab
->sdata
[1].sym
;
6403 addend
-= (sh
->root
.u
.def
.value
6404 + sh
->root
.u
.def
.section
->output_offset
6405 + sh
->root
.u
.def
.section
->output_section
->vma
);
6409 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6410 case R_PPC_EMB_SDA21
:
6411 case R_PPC_EMB_RELSDA
:
6415 struct elf_link_hash_entry
*sh
;
6417 BFD_ASSERT (sec
!= NULL
);
6418 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6419 if (((strncmp (name
, ".sdata", 6) == 0
6420 && (name
[6] == 0 || name
[6] == '.'))
6421 || (strncmp (name
, ".sbss", 5) == 0
6422 && (name
[5] == 0 || name
[5] == '.'))))
6425 sh
= htab
->sdata
[0].sym
;
6426 addend
-= (sh
->root
.u
.def
.value
6427 + sh
->root
.u
.def
.section
->output_offset
6428 + sh
->root
.u
.def
.section
->output_section
->vma
);
6431 else if (strncmp (name
, ".sdata2", 7) == 0
6432 || strncmp (name
, ".sbss2", 6) == 0)
6435 sh
= htab
->sdata
[1].sym
;
6436 addend
-= (sh
->root
.u
.def
.value
6437 + sh
->root
.u
.def
.section
->output_offset
6438 + sh
->root
.u
.def
.section
->output_section
->vma
);
6441 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
6442 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
6449 (*_bfd_error_handler
)
6450 (_("%B: the target (%s) of a %s relocation is "
6451 "in the wrong output section (%s)"),
6457 bfd_set_error (bfd_error_bad_value
);
6462 if (r_type
== R_PPC_EMB_SDA21
)
6463 { /* fill in register field */
6464 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6465 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
6466 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6471 /* Relocate against the beginning of the section. */
6473 case R_PPC_SECTOFF_LO
:
6474 case R_PPC_SECTOFF_HI
:
6475 case R_PPC_SECTOFF_HA
:
6476 BFD_ASSERT (sec
!= NULL
);
6477 addend
-= sec
->output_section
->vma
;
6480 /* Negative relocations. */
6481 case R_PPC_EMB_NADDR32
:
6482 case R_PPC_EMB_NADDR16
:
6483 case R_PPC_EMB_NADDR16_LO
:
6484 case R_PPC_EMB_NADDR16_HI
:
6485 case R_PPC_EMB_NADDR16_HA
:
6486 addend
-= 2 * relocation
;
6490 case R_PPC_GLOB_DAT
:
6491 case R_PPC_JMP_SLOT
:
6492 case R_PPC_RELATIVE
:
6494 case R_PPC_PLTREL32
:
6495 case R_PPC_PLT16_LO
:
6496 case R_PPC_PLT16_HI
:
6497 case R_PPC_PLT16_HA
:
6499 case R_PPC_EMB_RELSEC16
:
6500 case R_PPC_EMB_RELST_LO
:
6501 case R_PPC_EMB_RELST_HI
:
6502 case R_PPC_EMB_RELST_HA
:
6503 case R_PPC_EMB_BIT_FLD
:
6504 (*_bfd_error_handler
)
6505 (_("%B: relocation %s is not yet supported for symbol %s."),
6510 bfd_set_error (bfd_error_invalid_operation
);
6515 /* Do any further special processing. */
6521 case R_PPC_ADDR16_HA
:
6522 case R_PPC_REL16_HA
:
6523 case R_PPC_GOT16_HA
:
6524 case R_PPC_PLT16_HA
:
6525 case R_PPC_SECTOFF_HA
:
6526 case R_PPC_TPREL16_HA
:
6527 case R_PPC_DTPREL16_HA
:
6528 case R_PPC_GOT_TLSGD16_HA
:
6529 case R_PPC_GOT_TLSLD16_HA
:
6530 case R_PPC_GOT_TPREL16_HA
:
6531 case R_PPC_GOT_DTPREL16_HA
:
6532 case R_PPC_EMB_NADDR16_HA
:
6533 case R_PPC_EMB_RELST_HA
:
6534 /* It's just possible that this symbol is a weak symbol
6535 that's not actually defined anywhere. In that case,
6536 'sec' would be NULL, and we should leave the symbol
6537 alone (it will be set to zero elsewhere in the link). */
6539 /* Add 0x10000 if sign bit in 0:15 is set.
6540 Bits 0:15 are not used. */
6546 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6547 "offset = %ld, addend = %ld\n",
6552 (long) rel
->r_offset
,
6556 if (unresolved_reloc
6557 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
6560 (*_bfd_error_handler
)
6561 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6564 (long) rel
->r_offset
,
6570 r
= _bfd_final_link_relocate (howto
,
6578 if (r
!= bfd_reloc_ok
)
6580 if (r
== bfd_reloc_overflow
)
6585 && h
->root
.type
== bfd_link_hash_undefweak
6586 && howto
->pc_relative
)
6588 /* Assume this is a call protected by other code that
6589 detect the symbol is undefined. If this is the case,
6590 we can safely ignore the overflow. If not, the
6591 program is hosed anyway, and a little warning isn't
6597 if (! (*info
->callbacks
->reloc_overflow
) (info
,
6598 (h
? &h
->root
: NULL
),
6609 (*_bfd_error_handler
)
6610 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6611 input_bfd
, input_section
,
6612 (long) rel
->r_offset
, howto
->name
, sym_name
, (int) r
);
6619 fprintf (stderr
, "\n");
6625 #define PPC_LO(v) ((v) & 0xffff)
6626 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6627 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6629 /* Finish up dynamic symbol handling. We set the contents of various
6630 dynamic sections here. */
6633 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
6634 struct bfd_link_info
*info
,
6635 struct elf_link_hash_entry
*h
,
6636 Elf_Internal_Sym
*sym
)
6638 struct ppc_elf_link_hash_table
*htab
;
6639 struct plt_entry
*ent
;
6640 bfd_boolean doneone
;
6643 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
6644 h
->root
.root
.string
);
6647 htab
= ppc_elf_hash_table (info
);
6648 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6651 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6652 if (ent
->plt
.offset
!= (bfd_vma
) -1)
6656 Elf_Internal_Rela rela
;
6658 bfd_vma reloc_index
;
6660 if (!(htab
->old_plt
|| htab
->is_vxworks
))
6661 reloc_index
= ent
->plt
.offset
/ 4;
6664 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
6665 / htab
->plt_slot_size
);
6666 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
6667 && !htab
->is_vxworks
)
6668 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
6671 /* This symbol has an entry in the procedure linkage table.
6673 if (htab
->is_vxworks
)
6676 const bfd_vma
*plt_entry
;
6678 /* The first three entries in .got.plt are reserved. */
6679 got_offset
= (reloc_index
+ 3) * 4;
6681 /* Use the right PLT. */
6682 plt_entry
= info
->shared
? ppc_elf_vxworks_pic_plt_entry
6683 : ppc_elf_vxworks_plt_entry
;
6685 /* Fill in the .plt on VxWorks. */
6688 bfd_vma got_offset_hi
= (got_offset
>> 16)
6689 + ((got_offset
& 0x8000) >> 15);
6691 bfd_put_32 (output_bfd
,
6692 plt_entry
[0] | (got_offset_hi
& 0xffff),
6693 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
6694 bfd_put_32 (output_bfd
,
6695 plt_entry
[1] | (got_offset
& 0xffff),
6696 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
6702 + htab
->elf
.hgot
->root
.u
.def
.value
6703 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
6704 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
);
6705 bfd_vma got_loc_hi
= (got_loc
>> 16)
6706 + ((got_loc
& 0x8000) >> 15);
6708 bfd_put_32 (output_bfd
,
6709 plt_entry
[0] | (got_loc_hi
& 0xffff),
6710 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
6711 bfd_put_32 (output_bfd
,
6712 plt_entry
[1] | (got_loc
& 0xffff),
6713 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
6716 bfd_put_32 (output_bfd
, plt_entry
[2],
6717 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
6718 bfd_put_32 (output_bfd
, plt_entry
[3],
6719 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
6721 /* This instruction is an immediate load. The value loaded is
6722 the byte offset of the R_PPC_JMP_SLOT relocation from the
6723 start of the .rela.plt section. The value is stored in the
6724 low-order 16 bits of the load instruction. */
6725 /* NOTE: It appears that this is now an index rather than a
6726 prescaled offset. */
6727 bfd_put_32 (output_bfd
,
6728 plt_entry
[4] | reloc_index
,
6729 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
6730 /* This instruction is a PC-relative branch whose target is
6731 the start of the PLT section. The address of this branch
6732 instruction is 20 bytes beyond the start of this PLT entry.
6733 The address is encoded in bits 6-29, inclusive. The value
6734 stored is right-shifted by two bits, permitting a 26-bit
6736 bfd_put_32 (output_bfd
,
6738 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
6739 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
6740 bfd_put_32 (output_bfd
, plt_entry
[6],
6741 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
6742 bfd_put_32 (output_bfd
, plt_entry
[7],
6743 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
6745 /* Fill in the GOT entry corresponding to this PLT slot with
6746 the address immediately after the the "bctr" instruction
6747 in this PLT entry. */
6748 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
6749 + htab
->plt
->output_offset
6750 + ent
->plt
.offset
+ 16),
6751 htab
->sgotplt
->contents
+ got_offset
);
6755 /* Fill in a couple of entries in .rela.plt.unloaded. */
6756 loc
= htab
->srelplt2
->contents
6757 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
6758 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
6759 * sizeof (Elf32_External_Rela
));
6761 /* Provide the @ha relocation for the first instruction. */
6762 rela
.r_offset
= (htab
->plt
->output_section
->vma
6763 + htab
->plt
->output_offset
6764 + ent
->plt
.offset
+ 2);
6765 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
6767 rela
.r_addend
= got_offset
;
6768 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
6769 loc
+= sizeof (Elf32_External_Rela
);
6771 /* Provide the @l relocation for the second instruction. */
6772 rela
.r_offset
= (htab
->plt
->output_section
->vma
6773 + htab
->plt
->output_offset
6774 + ent
->plt
.offset
+ 6);
6775 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
6777 rela
.r_addend
= got_offset
;
6778 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
6779 loc
+= sizeof (Elf32_External_Rela
);
6781 /* Provide a relocation for the GOT entry corresponding to this
6782 PLT slot. Point it at the middle of the .plt entry. */
6783 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
6784 + htab
->sgotplt
->output_offset
6786 rela
.r_info
= ELF32_R_INFO (htab
->hplt
->indx
,
6788 rela
.r_addend
= ent
->plt
.offset
+ 16;
6789 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
6792 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
6793 In particular, the offset for the relocation is not the
6794 address of the PLT entry for this function, as specified
6795 by the ABI. Instead, the offset is set to the address of
6796 the GOT slot for this function. See EABI 4.4.4.1. */
6797 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
6798 + htab
->sgotplt
->output_offset
6804 rela
.r_offset
= (htab
->plt
->output_section
->vma
6805 + htab
->plt
->output_offset
6809 /* We don't need to fill in the .plt. The ppc dynamic
6810 linker will fill it in. */
6814 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
6815 + htab
->glink
->output_section
->vma
6816 + htab
->glink
->output_offset
);
6817 bfd_put_32 (output_bfd
, val
,
6818 htab
->plt
->contents
+ ent
->plt
.offset
);
6822 /* Fill in the entry in the .rela.plt section. */
6823 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
6826 loc
= (htab
->relplt
->contents
6827 + reloc_index
* sizeof (Elf32_External_Rela
));
6828 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
6830 if (!h
->def_regular
)
6832 /* Mark the symbol as undefined, rather than as defined in
6833 the .plt section. Leave the value alone. */
6834 sym
->st_shndx
= SHN_UNDEF
;
6835 /* If the symbol is weak, we do need to clear the value.
6836 Otherwise, the PLT entry would provide a definition for
6837 the symbol even if the symbol wasn't defined anywhere,
6838 and so the symbol would never be NULL. */
6839 if (!h
->ref_regular_nonweak
)
6850 plt
= (ent
->plt
.offset
6851 + htab
->plt
->output_section
->vma
6852 + htab
->plt
->output_offset
);
6853 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
6855 if (info
->shared
|| info
->pie
)
6859 if (ent
->addend
>= 32768)
6861 + ent
->sec
->output_section
->vma
6862 + ent
->sec
->output_offset
);
6863 else if (htab
->elf
.hgot
!= NULL
)
6864 got
= (htab
->elf
.hgot
->root
.u
.def
.value
6865 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
6866 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
);
6870 if (plt
+ 0x8000 < 0x10000)
6872 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
6874 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
6876 bfd_put_32 (output_bfd
, BCTR
, p
);
6878 bfd_put_32 (output_bfd
, NOP
, p
);
6883 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
6885 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
6887 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
6889 bfd_put_32 (output_bfd
, BCTR
, p
);
6895 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
6897 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
6899 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
6901 bfd_put_32 (output_bfd
, BCTR
, p
);
6904 /* We only need one non-PIC glink stub. */
6915 Elf_Internal_Rela rela
;
6918 /* This symbols needs a copy reloc. Set it up. */
6921 fprintf (stderr
, ", copy");
6924 BFD_ASSERT (h
->dynindx
!= -1);
6926 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
6930 BFD_ASSERT (s
!= NULL
);
6932 rela
.r_offset
= (h
->root
.u
.def
.value
6933 + h
->root
.u
.def
.section
->output_section
->vma
6934 + h
->root
.u
.def
.section
->output_offset
);
6935 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
6937 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6938 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
6942 fprintf (stderr
, "\n");
6945 /* Mark some specially defined symbols as absolute. */
6946 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
6947 || (!htab
->is_vxworks
6948 && (h
== htab
->elf
.hgot
6949 || strcmp (h
->root
.root
.string
,
6950 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
6951 sym
->st_shndx
= SHN_ABS
;
6956 static enum elf_reloc_type_class
6957 ppc_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
6959 switch (ELF32_R_TYPE (rela
->r_info
))
6961 case R_PPC_RELATIVE
:
6962 return reloc_class_relative
;
6965 case R_PPC_JMP_SLOT
:
6966 return reloc_class_plt
;
6968 return reloc_class_copy
;
6970 return reloc_class_normal
;
6974 /* Finish up the dynamic sections. */
6977 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
6978 struct bfd_link_info
*info
)
6982 struct ppc_elf_link_hash_table
*htab
;
6987 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
6990 htab
= ppc_elf_hash_table (info
);
6991 dynobj
= elf_hash_table (info
)->dynobj
;
6992 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
6993 if (htab
->is_vxworks
)
6994 splt
= bfd_get_section_by_name (dynobj
, ".plt");
6999 if (htab
->elf
.hgot
!= NULL
)
7000 got
= (htab
->elf
.hgot
->root
.u
.def
.value
7001 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7002 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
);
7004 if (htab
->elf
.dynamic_sections_created
)
7006 Elf32_External_Dyn
*dyncon
, *dynconend
;
7008 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
7010 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
7011 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
7012 for (; dyncon
< dynconend
; dyncon
++)
7014 Elf_Internal_Dyn dyn
;
7017 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
7022 if (htab
->is_vxworks
)
7026 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
7030 dyn
.d_un
.d_val
= htab
->relplt
->size
;
7035 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
7039 dyn
.d_un
.d_ptr
= got
;
7043 if (htab
->is_vxworks
)
7046 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
7055 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
7059 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7060 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7061 if (htab
->got
!= NULL
)
7063 unsigned char *p
= htab
->got
->contents
;
7066 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
7067 if (htab
->old_plt
&& !htab
->is_vxworks
)
7068 bfd_put_32 (output_bfd
, 0x4e800021 /* blrl */, p
- 4);
7072 val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
7073 bfd_put_32 (output_bfd
, val
, p
);
7075 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
7078 /* Fill in the first entry in the VxWorks procedure linkage table. */
7079 if (splt
&& splt
->size
> 0)
7081 /* Use the right PLT. */
7082 static const bfd_vma
*plt_entry
= NULL
;
7083 plt_entry
= info
->shared
?
7084 ppc_elf_vxworks_pic_plt0_entry
: ppc_elf_vxworks_plt0_entry
;
7089 (htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7090 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
7091 + htab
->elf
.hgot
->root
.u
.def
.value
);
7092 bfd_vma got_hi
= (got_value
>> 16) + ((got_value
& 0x8000) >> 15);
7094 bfd_put_32 (output_bfd
, plt_entry
[0] | (got_hi
& 0xffff),
7095 splt
->contents
+ 0);
7096 bfd_put_32 (output_bfd
, plt_entry
[1] | (got_value
& 0xffff),
7097 splt
->contents
+ 4);
7101 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
7102 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
7104 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
7105 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
7106 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
7107 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
7108 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
7109 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
7113 Elf_Internal_Rela rela
;
7116 loc
= htab
->srelplt2
->contents
;
7118 /* Output the @ha relocation for the first instruction. */
7119 rela
.r_offset
= (htab
->plt
->output_section
->vma
7120 + htab
->plt
->output_offset
7122 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
7124 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7125 loc
+= sizeof (Elf32_External_Rela
);
7127 /* Output the @l relocation for the second instruction. */
7128 rela
.r_offset
= (htab
->plt
->output_section
->vma
7129 + htab
->plt
->output_offset
7131 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
7133 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7134 loc
+= sizeof (Elf32_External_Rela
);
7136 /* Fix up the remaining relocations. They may have the wrong
7137 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7138 in which symbols were output. */
7139 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
7141 Elf_Internal_Rela rel
;
7143 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7144 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
7145 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7146 loc
+= sizeof (Elf32_External_Rela
);
7148 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7149 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
7150 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7151 loc
+= sizeof (Elf32_External_Rela
);
7153 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7154 rel
.r_info
= ELF32_R_INFO (htab
->hplt
->indx
, R_PPC_ADDR32
);
7155 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7156 loc
+= sizeof (Elf32_External_Rela
);
7161 if (htab
->glink
!= NULL
&& htab
->glink
->contents
!= NULL
)
7164 unsigned char *endp
;
7169 * PIC glink code is the following:
7171 * # ith PLT code stub.
7172 * addis 11,30,(plt+(i-1)*4-got)@ha
7173 * lwz 11,(plt+(i-1)*4-got)@l(11)
7177 * # A table of branches, one for each plt entry.
7178 * # The idea is that the plt call stub loads ctr (and r11) with these
7179 * # addresses, so (r11 - res_0) gives the plt index * 4.
7180 * res_0: b PLTresolve
7181 * res_1: b PLTresolve
7183 * # Some number of entries towards the end can be nops
7189 * addis 11,11,(1f-res_0)@ha
7192 * 1: addi 11,11,(1b-res_0)@l
7195 * sub 11,11,12 # r11 = index * 4
7196 * addis 12,12,(got+4-1b)@ha
7197 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7198 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7201 * add 11,0,11 # r11 = index * 12 = reloc offset.
7204 static const unsigned int pic_plt_resolve
[] =
7224 static const unsigned int plt_resolve
[] =
7244 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
7246 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
7249 /* Build the branch table, one for each plt entry (less one),
7250 and perhaps some padding. */
7251 p
= htab
->glink
->contents
;
7252 p
+= htab
->glink_pltresolve
;
7253 endp
= htab
->glink
->contents
;
7254 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
7255 while (p
< endp
- 8 * 4)
7257 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
7262 bfd_put_32 (output_bfd
, NOP
, p
);
7266 res0
= (htab
->glink_pltresolve
7267 + htab
->glink
->output_section
->vma
7268 + htab
->glink
->output_offset
);
7270 /* Last comes the PLTresolve stub. */
7271 if (info
->shared
|| info
->pie
)
7275 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
7277 bfd_put_32 (output_bfd
, pic_plt_resolve
[i
], p
);
7280 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
7282 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
7283 + htab
->glink
->output_section
->vma
7284 + htab
->glink
->output_offset
);
7286 bfd_put_32 (output_bfd
,
7287 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
7288 bfd_put_32 (output_bfd
,
7289 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
7290 bfd_put_32 (output_bfd
,
7291 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
7292 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
7294 bfd_put_32 (output_bfd
,
7295 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
7296 bfd_put_32 (output_bfd
,
7297 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
7301 bfd_put_32 (output_bfd
,
7302 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
7303 bfd_put_32 (output_bfd
,
7304 LWZ_12_12
+ 4, p
+ 9*4);
7309 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
7311 bfd_put_32 (output_bfd
, plt_resolve
[i
], p
);
7314 p
-= 4 * ARRAY_SIZE (plt_resolve
);
7316 bfd_put_32 (output_bfd
,
7317 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
7318 bfd_put_32 (output_bfd
,
7319 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
7320 bfd_put_32 (output_bfd
,
7321 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
7322 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
7324 bfd_put_32 (output_bfd
,
7325 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
7326 bfd_put_32 (output_bfd
,
7327 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
7331 bfd_put_32 (output_bfd
,
7332 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
7333 bfd_put_32 (output_bfd
,
7334 LWZ_12_12
+ 4, p
+ 6*4);
7342 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7343 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7344 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7345 #define TARGET_BIG_NAME "elf32-powerpc"
7346 #define ELF_ARCH bfd_arch_powerpc
7347 #define ELF_MACHINE_CODE EM_PPC
7348 #ifdef __QNXTARGET__
7349 #define ELF_MAXPAGESIZE 0x1000
7351 #define ELF_MAXPAGESIZE 0x10000
7353 #define ELF_MINPAGESIZE 0x1000
7354 #define elf_info_to_howto ppc_elf_info_to_howto
7356 #ifdef EM_CYGNUS_POWERPC
7357 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7361 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7364 #define elf_backend_plt_not_loaded 1
7365 #define elf_backend_can_gc_sections 1
7366 #define elf_backend_can_refcount 1
7367 #define elf_backend_rela_normal 1
7369 #define bfd_elf32_mkobject ppc_elf_mkobject
7370 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7371 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7372 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7373 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7374 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7376 #define elf_backend_object_p ppc_elf_object_p
7377 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7378 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7379 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7380 #define elf_backend_relocate_section ppc_elf_relocate_section
7381 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7382 #define elf_backend_check_relocs ppc_elf_check_relocs
7383 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7384 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7385 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7386 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7387 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7388 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7389 #define elf_backend_fake_sections ppc_elf_fake_sections
7390 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7391 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7392 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7393 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7394 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7395 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7396 #define elf_backend_write_section ppc_elf_write_section
7397 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7398 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7399 #define elf_backend_action_discarded ppc_elf_action_discarded
7401 #include "elf32-target.h"
7403 /* VxWorks Target */
7405 #undef TARGET_LITTLE_SYM
7406 #undef TARGET_LITTLE_NAME
7408 #undef TARGET_BIG_SYM
7409 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7410 #undef TARGET_BIG_NAME
7411 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7413 /* VxWorks uses the elf default section flags for .plt. */
7414 static const struct bfd_elf_special_section
*
7415 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
7417 if (sec
->name
== NULL
)
7420 if (strcmp (sec
->name
, ".plt") == 0)
7421 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
7423 return ppc_elf_get_sec_type_attr (abfd
, sec
);
7426 /* Like ppc_elf_link_hash_table_create, but overrides
7427 appropriately for VxWorks. */
7428 static struct bfd_link_hash_table
*
7429 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
7431 struct bfd_link_hash_table
*ret
;
7433 ret
= ppc_elf_link_hash_table_create (abfd
);
7436 struct ppc_elf_link_hash_table
*htab
7437 = (struct ppc_elf_link_hash_table
*)ret
;
7438 htab
->is_vxworks
= 1;
7439 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
7440 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
7441 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
7446 /* Tweak magic VxWorks symbols as they are loaded. */
7448 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
7449 struct bfd_link_info
*info
,
7450 Elf_Internal_Sym
*sym
,
7451 const char **namep ATTRIBUTE_UNUSED
,
7452 flagword
*flagsp ATTRIBUTE_UNUSED
,
7456 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
7460 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
7463 /* Tweak magic VxWorks symbols as they are written to the output file. */
7465 elf_i386_vxworks_link_output_symbol_hook (struct bfd_link_info
*info
7468 Elf_Internal_Sym
*sym
,
7469 asection
*input_sec ATTRIBUTE_UNUSED
,
7470 struct elf_link_hash_entry
*h
7473 /* Ignore the first dummy symbol. */
7477 return elf_vxworks_link_output_symbol_hook (name
, sym
);
7481 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
7483 ppc_elf_final_write_processing(abfd
, linker
);
7484 elf_vxworks_final_write_processing(abfd
, linker
);
7487 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7489 #undef elf_backend_want_plt_sym
7490 #define elf_backend_want_plt_sym 1
7491 #undef elf_backend_want_got_plt
7492 #define elf_backend_want_got_plt 1
7493 #undef elf_backend_got_symbol_offset
7494 #define elf_backend_got_symbol_offset 0
7495 #undef elf_backend_plt_not_loaded
7496 #define elf_backend_plt_not_loaded 0
7497 #undef elf_backend_plt_readonly
7498 #define elf_backend_plt_readonly 1
7499 #undef elf_backend_got_header_size
7500 #define elf_backend_got_header_size 12
7502 #undef bfd_elf32_bfd_link_hash_table_create
7503 #define bfd_elf32_bfd_link_hash_table_create \
7504 ppc_elf_vxworks_link_hash_table_create
7505 #undef elf_backend_add_symbol_hook
7506 #define elf_backend_add_symbol_hook \
7507 ppc_elf_vxworks_add_symbol_hook
7508 #undef elf_backend_link_output_symbol_hook
7509 #define elf_backend_link_output_symbol_hook \
7510 elf_i386_vxworks_link_output_symbol_hook
7511 #undef elf_backend_final_write_processing
7512 #define elf_backend_final_write_processing \
7513 ppc_elf_vxworks_final_write_processing
7514 #undef elf_backend_get_sec_type_attr
7515 #define elf_backend_get_sec_type_attr \
7516 ppc_elf_vxworks_get_sec_type_attr
7517 #undef elf_backend_emit_relocs
7518 #define elf_backend_emit_relocs \
7519 elf_vxworks_emit_relocs
7522 #define elf32_bed ppc_elf_vxworks_bed
7524 #include "elf32-target.h"