1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
24 /* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
36 #include "elf32-ppc.h"
37 #include "elf-vxworks.h"
39 /* RELA relocations are used here. */
41 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
42 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
43 static bfd_reloc_status_type ppc_elf_unhandled_reloc
44 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 /* Branch prediction bit for branch taken relocs. */
47 #define BRANCH_PREDICT_BIT 0x200000
48 /* Mask to set RA in memory instructions. */
49 #define RA_REGISTER_MASK 0x001f0000
50 /* Value to shift register by to insert RA. */
51 #define RA_REGISTER_SHIFT 16
53 /* The name of the dynamic interpreter. This is put in the .interp
55 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
57 /* For old-style PLT. */
58 /* The number of single-slot PLT entries (the rest use two slots). */
59 #define PLT_NUM_SINGLE_ENTRIES 8192
61 /* For new-style .glink and .plt. */
62 #define GLINK_PLTRESOLVE 16*4
63 #define GLINK_ENTRY_SIZE 4*4
65 /* VxWorks uses its own plt layout, filled in by the static linker. */
67 /* The standard VxWorks PLT entry. */
68 #define VXWORKS_PLT_ENTRY_SIZE 32
69 static const bfd_vma ppc_elf_vxworks_plt_entry
70 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
72 0x3d800000, /* lis r12,0 */
73 0x818c0000, /* lwz r12,0(r12) */
74 0x7d8903a6, /* mtctr r12 */
75 0x4e800420, /* bctr */
76 0x39600000, /* li r11,0 */
77 0x48000000, /* b 14 <.PLT0resolve+0x4> */
81 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
84 0x3d9e0000, /* addis r12,r30,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
94 /* The initial VxWorks PLT entry. */
95 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
96 static const bfd_vma ppc_elf_vxworks_plt0_entry
97 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
99 0x3d800000, /* lis r12,0 */
100 0x398c0000, /* addi r12,r12,0 */
101 0x800c0008, /* lwz r0,8(r12) */
102 0x7c0903a6, /* mtctr r0 */
103 0x818c0004, /* lwz r12,4(r12) */
104 0x4e800420, /* bctr */
105 0x60000000, /* nop */
106 0x60000000, /* nop */
108 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
111 0x819e0008, /* lwz r12,8(r30) */
112 0x7d8903a6, /* mtctr r12 */
113 0x819e0004, /* lwz r12,4(r30) */
114 0x4e800420, /* bctr */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
121 /* For executables, we have some additional relocations in
122 .rela.plt.unloaded, for the kernel loader. */
124 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
125 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
126 /* The number of relocations in the PLTResolve slot. */
127 #define VXWORKS_PLTRESOLVE_RELOCS 2
128 /* The number of relocations in the PLTResolve slot when when creating
130 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
132 /* Some instructions. */
133 #define ADDIS_11_11 0x3d6b0000
134 #define ADDIS_11_30 0x3d7e0000
135 #define ADDIS_12_12 0x3d8c0000
136 #define ADDI_11_11 0x396b0000
137 #define ADD_0_11_11 0x7c0b5a14
138 #define ADD_11_0_11 0x7d605a14
140 #define BCL_20_31 0x429f0005
141 #define BCTR 0x4e800420
142 #define LIS_11 0x3d600000
143 #define LIS_12 0x3d800000
144 #define LWZU_0_12 0x840c0000
145 #define LWZ_0_12 0x800c0000
146 #define LWZ_11_11 0x816b0000
147 #define LWZ_11_30 0x817e0000
148 #define LWZ_12_12 0x818c0000
149 #define MFLR_0 0x7c0802a6
150 #define MFLR_12 0x7d8802a6
151 #define MTCTR_0 0x7c0903a6
152 #define MTCTR_11 0x7d6903a6
153 #define MTLR_0 0x7c0803a6
154 #define NOP 0x60000000
155 #define SUB_11_11_12 0x7d6c5850
157 /* Offset of tp and dtp pointers from start of TLS block. */
158 #define TP_OFFSET 0x7000
159 #define DTP_OFFSET 0x8000
161 static reloc_howto_type
*ppc_elf_howto_table
[R_PPC_max
];
163 static reloc_howto_type ppc_elf_howto_raw
[] = {
164 /* This reloc does nothing. */
165 HOWTO (R_PPC_NONE
, /* type */
167 2, /* size (0 = byte, 1 = short, 2 = long) */
169 FALSE
, /* pc_relative */
171 complain_overflow_bitfield
, /* complain_on_overflow */
172 bfd_elf_generic_reloc
, /* special_function */
173 "R_PPC_NONE", /* name */
174 FALSE
, /* partial_inplace */
177 FALSE
), /* pcrel_offset */
179 /* A standard 32 bit relocation. */
180 HOWTO (R_PPC_ADDR32
, /* type */
182 2, /* size (0 = byte, 1 = short, 2 = long) */
184 FALSE
, /* pc_relative */
186 complain_overflow_bitfield
, /* complain_on_overflow */
187 bfd_elf_generic_reloc
, /* special_function */
188 "R_PPC_ADDR32", /* name */
189 FALSE
, /* partial_inplace */
191 0xffffffff, /* dst_mask */
192 FALSE
), /* pcrel_offset */
194 /* An absolute 26 bit branch; the lower two bits must be zero.
195 FIXME: we don't check that, we just clear them. */
196 HOWTO (R_PPC_ADDR24
, /* type */
198 2, /* size (0 = byte, 1 = short, 2 = long) */
200 FALSE
, /* pc_relative */
202 complain_overflow_bitfield
, /* complain_on_overflow */
203 bfd_elf_generic_reloc
, /* special_function */
204 "R_PPC_ADDR24", /* name */
205 FALSE
, /* partial_inplace */
207 0x3fffffc, /* dst_mask */
208 FALSE
), /* pcrel_offset */
210 /* A standard 16 bit relocation. */
211 HOWTO (R_PPC_ADDR16
, /* type */
213 1, /* size (0 = byte, 1 = short, 2 = long) */
215 FALSE
, /* pc_relative */
217 complain_overflow_bitfield
, /* complain_on_overflow */
218 bfd_elf_generic_reloc
, /* special_function */
219 "R_PPC_ADDR16", /* name */
220 FALSE
, /* partial_inplace */
222 0xffff, /* dst_mask */
223 FALSE
), /* pcrel_offset */
225 /* A 16 bit relocation without overflow. */
226 HOWTO (R_PPC_ADDR16_LO
, /* type */
228 1, /* size (0 = byte, 1 = short, 2 = long) */
230 FALSE
, /* pc_relative */
232 complain_overflow_dont
,/* complain_on_overflow */
233 bfd_elf_generic_reloc
, /* special_function */
234 "R_PPC_ADDR16_LO", /* name */
235 FALSE
, /* partial_inplace */
237 0xffff, /* dst_mask */
238 FALSE
), /* pcrel_offset */
240 /* The high order 16 bits of an address. */
241 HOWTO (R_PPC_ADDR16_HI
, /* type */
243 1, /* size (0 = byte, 1 = short, 2 = long) */
245 FALSE
, /* pc_relative */
247 complain_overflow_dont
, /* complain_on_overflow */
248 bfd_elf_generic_reloc
, /* special_function */
249 "R_PPC_ADDR16_HI", /* name */
250 FALSE
, /* partial_inplace */
252 0xffff, /* dst_mask */
253 FALSE
), /* pcrel_offset */
255 /* The high order 16 bits of an address, plus 1 if the contents of
256 the low 16 bits, treated as a signed number, is negative. */
257 HOWTO (R_PPC_ADDR16_HA
, /* type */
259 1, /* size (0 = byte, 1 = short, 2 = long) */
261 FALSE
, /* pc_relative */
263 complain_overflow_dont
, /* complain_on_overflow */
264 ppc_elf_addr16_ha_reloc
, /* special_function */
265 "R_PPC_ADDR16_HA", /* name */
266 FALSE
, /* partial_inplace */
268 0xffff, /* dst_mask */
269 FALSE
), /* pcrel_offset */
271 /* An absolute 16 bit branch; the lower two bits must be zero.
272 FIXME: we don't check that, we just clear them. */
273 HOWTO (R_PPC_ADDR14
, /* type */
275 2, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE
, /* pc_relative */
279 complain_overflow_bitfield
, /* complain_on_overflow */
280 bfd_elf_generic_reloc
, /* special_function */
281 "R_PPC_ADDR14", /* name */
282 FALSE
, /* partial_inplace */
284 0xfffc, /* dst_mask */
285 FALSE
), /* pcrel_offset */
287 /* An absolute 16 bit branch, for which bit 10 should be set to
288 indicate that the branch is expected to be taken. The lower two
289 bits must be zero. */
290 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
294 FALSE
, /* pc_relative */
296 complain_overflow_bitfield
, /* complain_on_overflow */
297 bfd_elf_generic_reloc
, /* special_function */
298 "R_PPC_ADDR14_BRTAKEN",/* name */
299 FALSE
, /* partial_inplace */
301 0xfffc, /* dst_mask */
302 FALSE
), /* pcrel_offset */
304 /* An absolute 16 bit branch, for which bit 10 should be set to
305 indicate that the branch is not expected to be taken. The lower
306 two bits must be zero. */
307 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
311 FALSE
, /* pc_relative */
313 complain_overflow_bitfield
, /* complain_on_overflow */
314 bfd_elf_generic_reloc
, /* special_function */
315 "R_PPC_ADDR14_BRNTAKEN",/* name */
316 FALSE
, /* partial_inplace */
318 0xfffc, /* dst_mask */
319 FALSE
), /* pcrel_offset */
321 /* A relative 26 bit branch; the lower two bits must be zero. */
322 HOWTO (R_PPC_REL24
, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 TRUE
, /* pc_relative */
328 complain_overflow_signed
, /* complain_on_overflow */
329 bfd_elf_generic_reloc
, /* special_function */
330 "R_PPC_REL24", /* name */
331 FALSE
, /* partial_inplace */
333 0x3fffffc, /* dst_mask */
334 TRUE
), /* pcrel_offset */
336 /* A relative 16 bit branch; the lower two bits must be zero. */
337 HOWTO (R_PPC_REL14
, /* type */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
341 TRUE
, /* pc_relative */
343 complain_overflow_signed
, /* complain_on_overflow */
344 bfd_elf_generic_reloc
, /* special_function */
345 "R_PPC_REL14", /* name */
346 FALSE
, /* partial_inplace */
348 0xfffc, /* dst_mask */
349 TRUE
), /* pcrel_offset */
351 /* A relative 16 bit branch. Bit 10 should be set to indicate that
352 the branch is expected to be taken. The lower two bits must be
354 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
358 TRUE
, /* pc_relative */
360 complain_overflow_signed
, /* complain_on_overflow */
361 bfd_elf_generic_reloc
, /* special_function */
362 "R_PPC_REL14_BRTAKEN", /* name */
363 FALSE
, /* partial_inplace */
365 0xfffc, /* dst_mask */
366 TRUE
), /* pcrel_offset */
368 /* A relative 16 bit branch. Bit 10 should be set to indicate that
369 the branch is not expected to be taken. The lower two bits must
371 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
373 2, /* size (0 = byte, 1 = short, 2 = long) */
375 TRUE
, /* pc_relative */
377 complain_overflow_signed
, /* complain_on_overflow */
378 bfd_elf_generic_reloc
, /* special_function */
379 "R_PPC_REL14_BRNTAKEN",/* name */
380 FALSE
, /* partial_inplace */
382 0xfffc, /* dst_mask */
383 TRUE
), /* pcrel_offset */
385 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
387 HOWTO (R_PPC_GOT16
, /* type */
389 1, /* size (0 = byte, 1 = short, 2 = long) */
391 FALSE
, /* pc_relative */
393 complain_overflow_signed
, /* complain_on_overflow */
394 bfd_elf_generic_reloc
, /* special_function */
395 "R_PPC_GOT16", /* name */
396 FALSE
, /* partial_inplace */
398 0xffff, /* dst_mask */
399 FALSE
), /* pcrel_offset */
401 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
403 HOWTO (R_PPC_GOT16_LO
, /* type */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
407 FALSE
, /* pc_relative */
409 complain_overflow_dont
, /* complain_on_overflow */
410 bfd_elf_generic_reloc
, /* special_function */
411 "R_PPC_GOT16_LO", /* name */
412 FALSE
, /* partial_inplace */
414 0xffff, /* dst_mask */
415 FALSE
), /* pcrel_offset */
417 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
419 HOWTO (R_PPC_GOT16_HI
, /* type */
421 1, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE
, /* pc_relative */
425 complain_overflow_bitfield
, /* complain_on_overflow */
426 bfd_elf_generic_reloc
, /* special_function */
427 "R_PPC_GOT16_HI", /* name */
428 FALSE
, /* partial_inplace */
430 0xffff, /* dst_mask */
431 FALSE
), /* pcrel_offset */
433 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
435 HOWTO (R_PPC_GOT16_HA
, /* type */
437 1, /* size (0 = byte, 1 = short, 2 = long) */
439 FALSE
, /* pc_relative */
441 complain_overflow_bitfield
, /* complain_on_overflow */
442 ppc_elf_addr16_ha_reloc
, /* special_function */
443 "R_PPC_GOT16_HA", /* name */
444 FALSE
, /* partial_inplace */
446 0xffff, /* dst_mask */
447 FALSE
), /* pcrel_offset */
449 /* Like R_PPC_REL24, but referring to the procedure linkage table
450 entry for the symbol. */
451 HOWTO (R_PPC_PLTREL24
, /* type */
453 2, /* size (0 = byte, 1 = short, 2 = long) */
455 TRUE
, /* pc_relative */
457 complain_overflow_signed
, /* complain_on_overflow */
458 bfd_elf_generic_reloc
, /* special_function */
459 "R_PPC_PLTREL24", /* name */
460 FALSE
, /* partial_inplace */
462 0x3fffffc, /* dst_mask */
463 TRUE
), /* pcrel_offset */
465 /* This is used only by the dynamic linker. The symbol should exist
466 both in the object being run and in some shared library. The
467 dynamic linker copies the data addressed by the symbol from the
468 shared library into the object, because the object being
469 run has to have the data at some particular address. */
470 HOWTO (R_PPC_COPY
, /* type */
472 2, /* size (0 = byte, 1 = short, 2 = long) */
474 FALSE
, /* pc_relative */
476 complain_overflow_bitfield
, /* complain_on_overflow */
477 bfd_elf_generic_reloc
, /* special_function */
478 "R_PPC_COPY", /* name */
479 FALSE
, /* partial_inplace */
482 FALSE
), /* pcrel_offset */
484 /* Like R_PPC_ADDR32, but used when setting global offset table
486 HOWTO (R_PPC_GLOB_DAT
, /* type */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
490 FALSE
, /* pc_relative */
492 complain_overflow_bitfield
, /* complain_on_overflow */
493 bfd_elf_generic_reloc
, /* special_function */
494 "R_PPC_GLOB_DAT", /* name */
495 FALSE
, /* partial_inplace */
497 0xffffffff, /* dst_mask */
498 FALSE
), /* pcrel_offset */
500 /* Marks a procedure linkage table entry for a symbol. */
501 HOWTO (R_PPC_JMP_SLOT
, /* type */
503 2, /* size (0 = byte, 1 = short, 2 = long) */
505 FALSE
, /* pc_relative */
507 complain_overflow_bitfield
, /* complain_on_overflow */
508 bfd_elf_generic_reloc
, /* special_function */
509 "R_PPC_JMP_SLOT", /* name */
510 FALSE
, /* partial_inplace */
513 FALSE
), /* pcrel_offset */
515 /* Used only by the dynamic linker. When the object is run, this
516 longword is set to the load address of the object, plus the
518 HOWTO (R_PPC_RELATIVE
, /* type */
520 2, /* size (0 = byte, 1 = short, 2 = long) */
522 FALSE
, /* pc_relative */
524 complain_overflow_bitfield
, /* complain_on_overflow */
525 bfd_elf_generic_reloc
, /* special_function */
526 "R_PPC_RELATIVE", /* name */
527 FALSE
, /* partial_inplace */
529 0xffffffff, /* dst_mask */
530 FALSE
), /* pcrel_offset */
532 /* Like R_PPC_REL24, but uses the value of the symbol within the
533 object rather than the final value. Normally used for
534 _GLOBAL_OFFSET_TABLE_. */
535 HOWTO (R_PPC_LOCAL24PC
, /* type */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
539 TRUE
, /* pc_relative */
541 complain_overflow_signed
, /* complain_on_overflow */
542 bfd_elf_generic_reloc
, /* special_function */
543 "R_PPC_LOCAL24PC", /* name */
544 FALSE
, /* partial_inplace */
546 0x3fffffc, /* dst_mask */
547 TRUE
), /* pcrel_offset */
549 /* Like R_PPC_ADDR32, but may be unaligned. */
550 HOWTO (R_PPC_UADDR32
, /* type */
552 2, /* size (0 = byte, 1 = short, 2 = long) */
554 FALSE
, /* pc_relative */
556 complain_overflow_bitfield
, /* complain_on_overflow */
557 bfd_elf_generic_reloc
, /* special_function */
558 "R_PPC_UADDR32", /* name */
559 FALSE
, /* partial_inplace */
561 0xffffffff, /* dst_mask */
562 FALSE
), /* pcrel_offset */
564 /* Like R_PPC_ADDR16, but may be unaligned. */
565 HOWTO (R_PPC_UADDR16
, /* type */
567 1, /* size (0 = byte, 1 = short, 2 = long) */
569 FALSE
, /* pc_relative */
571 complain_overflow_bitfield
, /* complain_on_overflow */
572 bfd_elf_generic_reloc
, /* special_function */
573 "R_PPC_UADDR16", /* name */
574 FALSE
, /* partial_inplace */
576 0xffff, /* dst_mask */
577 FALSE
), /* pcrel_offset */
579 /* 32-bit PC relative */
580 HOWTO (R_PPC_REL32
, /* type */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
584 TRUE
, /* pc_relative */
586 complain_overflow_bitfield
, /* complain_on_overflow */
587 bfd_elf_generic_reloc
, /* special_function */
588 "R_PPC_REL32", /* name */
589 FALSE
, /* partial_inplace */
591 0xffffffff, /* dst_mask */
592 TRUE
), /* pcrel_offset */
594 /* 32-bit relocation to the symbol's procedure linkage table.
595 FIXME: not supported. */
596 HOWTO (R_PPC_PLT32
, /* type */
598 2, /* size (0 = byte, 1 = short, 2 = long) */
600 FALSE
, /* pc_relative */
602 complain_overflow_bitfield
, /* complain_on_overflow */
603 bfd_elf_generic_reloc
, /* special_function */
604 "R_PPC_PLT32", /* name */
605 FALSE
, /* partial_inplace */
608 FALSE
), /* pcrel_offset */
610 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
611 FIXME: not supported. */
612 HOWTO (R_PPC_PLTREL32
, /* type */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
616 TRUE
, /* pc_relative */
618 complain_overflow_bitfield
, /* complain_on_overflow */
619 bfd_elf_generic_reloc
, /* special_function */
620 "R_PPC_PLTREL32", /* name */
621 FALSE
, /* partial_inplace */
624 TRUE
), /* pcrel_offset */
626 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
628 HOWTO (R_PPC_PLT16_LO
, /* type */
630 1, /* size (0 = byte, 1 = short, 2 = long) */
632 FALSE
, /* pc_relative */
634 complain_overflow_dont
, /* complain_on_overflow */
635 bfd_elf_generic_reloc
, /* special_function */
636 "R_PPC_PLT16_LO", /* name */
637 FALSE
, /* partial_inplace */
639 0xffff, /* dst_mask */
640 FALSE
), /* pcrel_offset */
642 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
644 HOWTO (R_PPC_PLT16_HI
, /* type */
646 1, /* size (0 = byte, 1 = short, 2 = long) */
648 FALSE
, /* pc_relative */
650 complain_overflow_bitfield
, /* complain_on_overflow */
651 bfd_elf_generic_reloc
, /* special_function */
652 "R_PPC_PLT16_HI", /* name */
653 FALSE
, /* partial_inplace */
655 0xffff, /* dst_mask */
656 FALSE
), /* pcrel_offset */
658 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
660 HOWTO (R_PPC_PLT16_HA
, /* type */
662 1, /* size (0 = byte, 1 = short, 2 = long) */
664 FALSE
, /* pc_relative */
666 complain_overflow_bitfield
, /* complain_on_overflow */
667 ppc_elf_addr16_ha_reloc
, /* special_function */
668 "R_PPC_PLT16_HA", /* name */
669 FALSE
, /* partial_inplace */
671 0xffff, /* dst_mask */
672 FALSE
), /* pcrel_offset */
674 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
676 HOWTO (R_PPC_SDAREL16
, /* type */
678 1, /* size (0 = byte, 1 = short, 2 = long) */
680 FALSE
, /* pc_relative */
682 complain_overflow_signed
, /* complain_on_overflow */
683 bfd_elf_generic_reloc
, /* special_function */
684 "R_PPC_SDAREL16", /* name */
685 FALSE
, /* partial_inplace */
687 0xffff, /* dst_mask */
688 FALSE
), /* pcrel_offset */
690 /* 16-bit section relative relocation. */
691 HOWTO (R_PPC_SECTOFF
, /* type */
693 1, /* size (0 = byte, 1 = short, 2 = long) */
695 FALSE
, /* pc_relative */
697 complain_overflow_bitfield
, /* complain_on_overflow */
698 bfd_elf_generic_reloc
, /* special_function */
699 "R_PPC_SECTOFF", /* name */
700 FALSE
, /* partial_inplace */
702 0xffff, /* dst_mask */
703 FALSE
), /* pcrel_offset */
705 /* 16-bit lower half section relative relocation. */
706 HOWTO (R_PPC_SECTOFF_LO
, /* type */
708 1, /* size (0 = byte, 1 = short, 2 = long) */
710 FALSE
, /* pc_relative */
712 complain_overflow_dont
, /* complain_on_overflow */
713 bfd_elf_generic_reloc
, /* special_function */
714 "R_PPC_SECTOFF_LO", /* name */
715 FALSE
, /* partial_inplace */
717 0xffff, /* dst_mask */
718 FALSE
), /* pcrel_offset */
720 /* 16-bit upper half section relative relocation. */
721 HOWTO (R_PPC_SECTOFF_HI
, /* type */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
725 FALSE
, /* pc_relative */
727 complain_overflow_bitfield
, /* complain_on_overflow */
728 bfd_elf_generic_reloc
, /* special_function */
729 "R_PPC_SECTOFF_HI", /* name */
730 FALSE
, /* partial_inplace */
732 0xffff, /* dst_mask */
733 FALSE
), /* pcrel_offset */
735 /* 16-bit upper half adjusted section relative relocation. */
736 HOWTO (R_PPC_SECTOFF_HA
, /* type */
738 1, /* size (0 = byte, 1 = short, 2 = long) */
740 FALSE
, /* pc_relative */
742 complain_overflow_bitfield
, /* complain_on_overflow */
743 ppc_elf_addr16_ha_reloc
, /* special_function */
744 "R_PPC_SECTOFF_HA", /* name */
745 FALSE
, /* partial_inplace */
747 0xffff, /* dst_mask */
748 FALSE
), /* pcrel_offset */
750 /* Marker reloc for TLS. */
753 2, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE
, /* pc_relative */
757 complain_overflow_dont
, /* complain_on_overflow */
758 bfd_elf_generic_reloc
, /* special_function */
759 "R_PPC_TLS", /* name */
760 FALSE
, /* partial_inplace */
763 FALSE
), /* pcrel_offset */
765 /* Computes the load module index of the load module that contains the
766 definition of its TLS sym. */
767 HOWTO (R_PPC_DTPMOD32
,
769 2, /* size (0 = byte, 1 = short, 2 = long) */
771 FALSE
, /* pc_relative */
773 complain_overflow_dont
, /* complain_on_overflow */
774 ppc_elf_unhandled_reloc
, /* special_function */
775 "R_PPC_DTPMOD32", /* name */
776 FALSE
, /* partial_inplace */
778 0xffffffff, /* dst_mask */
779 FALSE
), /* pcrel_offset */
781 /* Computes a dtv-relative displacement, the difference between the value
782 of sym+add and the base address of the thread-local storage block that
783 contains the definition of sym, minus 0x8000. */
784 HOWTO (R_PPC_DTPREL32
,
786 2, /* size (0 = byte, 1 = short, 2 = long) */
788 FALSE
, /* pc_relative */
790 complain_overflow_dont
, /* complain_on_overflow */
791 ppc_elf_unhandled_reloc
, /* special_function */
792 "R_PPC_DTPREL32", /* name */
793 FALSE
, /* partial_inplace */
795 0xffffffff, /* dst_mask */
796 FALSE
), /* pcrel_offset */
798 /* A 16 bit dtprel reloc. */
799 HOWTO (R_PPC_DTPREL16
,
801 1, /* size (0 = byte, 1 = short, 2 = long) */
803 FALSE
, /* pc_relative */
805 complain_overflow_signed
, /* complain_on_overflow */
806 ppc_elf_unhandled_reloc
, /* special_function */
807 "R_PPC_DTPREL16", /* name */
808 FALSE
, /* partial_inplace */
810 0xffff, /* dst_mask */
811 FALSE
), /* pcrel_offset */
813 /* Like DTPREL16, but no overflow. */
814 HOWTO (R_PPC_DTPREL16_LO
,
816 1, /* size (0 = byte, 1 = short, 2 = long) */
818 FALSE
, /* pc_relative */
820 complain_overflow_dont
, /* complain_on_overflow */
821 ppc_elf_unhandled_reloc
, /* special_function */
822 "R_PPC_DTPREL16_LO", /* name */
823 FALSE
, /* partial_inplace */
825 0xffff, /* dst_mask */
826 FALSE
), /* pcrel_offset */
828 /* Like DTPREL16_LO, but next higher group of 16 bits. */
829 HOWTO (R_PPC_DTPREL16_HI
,
831 1, /* size (0 = byte, 1 = short, 2 = long) */
833 FALSE
, /* pc_relative */
835 complain_overflow_dont
, /* complain_on_overflow */
836 ppc_elf_unhandled_reloc
, /* special_function */
837 "R_PPC_DTPREL16_HI", /* name */
838 FALSE
, /* partial_inplace */
840 0xffff, /* dst_mask */
841 FALSE
), /* pcrel_offset */
843 /* Like DTPREL16_HI, but adjust for low 16 bits. */
844 HOWTO (R_PPC_DTPREL16_HA
,
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 FALSE
, /* pc_relative */
850 complain_overflow_dont
, /* complain_on_overflow */
851 ppc_elf_unhandled_reloc
, /* special_function */
852 "R_PPC_DTPREL16_HA", /* name */
853 FALSE
, /* partial_inplace */
855 0xffff, /* dst_mask */
856 FALSE
), /* pcrel_offset */
858 /* Computes a tp-relative displacement, the difference between the value of
859 sym+add and the value of the thread pointer (r13). */
860 HOWTO (R_PPC_TPREL32
,
862 2, /* size (0 = byte, 1 = short, 2 = long) */
864 FALSE
, /* pc_relative */
866 complain_overflow_dont
, /* complain_on_overflow */
867 ppc_elf_unhandled_reloc
, /* special_function */
868 "R_PPC_TPREL32", /* name */
869 FALSE
, /* partial_inplace */
871 0xffffffff, /* dst_mask */
872 FALSE
), /* pcrel_offset */
874 /* A 16 bit tprel reloc. */
875 HOWTO (R_PPC_TPREL16
,
877 1, /* size (0 = byte, 1 = short, 2 = long) */
879 FALSE
, /* pc_relative */
881 complain_overflow_signed
, /* complain_on_overflow */
882 ppc_elf_unhandled_reloc
, /* special_function */
883 "R_PPC_TPREL16", /* name */
884 FALSE
, /* partial_inplace */
886 0xffff, /* dst_mask */
887 FALSE
), /* pcrel_offset */
889 /* Like TPREL16, but no overflow. */
890 HOWTO (R_PPC_TPREL16_LO
,
892 1, /* size (0 = byte, 1 = short, 2 = long) */
894 FALSE
, /* pc_relative */
896 complain_overflow_dont
, /* complain_on_overflow */
897 ppc_elf_unhandled_reloc
, /* special_function */
898 "R_PPC_TPREL16_LO", /* name */
899 FALSE
, /* partial_inplace */
901 0xffff, /* dst_mask */
902 FALSE
), /* pcrel_offset */
904 /* Like TPREL16_LO, but next higher group of 16 bits. */
905 HOWTO (R_PPC_TPREL16_HI
,
907 1, /* size (0 = byte, 1 = short, 2 = long) */
909 FALSE
, /* pc_relative */
911 complain_overflow_dont
, /* complain_on_overflow */
912 ppc_elf_unhandled_reloc
, /* special_function */
913 "R_PPC_TPREL16_HI", /* name */
914 FALSE
, /* partial_inplace */
916 0xffff, /* dst_mask */
917 FALSE
), /* pcrel_offset */
919 /* Like TPREL16_HI, but adjust for low 16 bits. */
920 HOWTO (R_PPC_TPREL16_HA
,
922 1, /* size (0 = byte, 1 = short, 2 = long) */
924 FALSE
, /* pc_relative */
926 complain_overflow_dont
, /* complain_on_overflow */
927 ppc_elf_unhandled_reloc
, /* special_function */
928 "R_PPC_TPREL16_HA", /* name */
929 FALSE
, /* partial_inplace */
931 0xffff, /* dst_mask */
932 FALSE
), /* pcrel_offset */
934 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
935 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
936 to the first entry. */
937 HOWTO (R_PPC_GOT_TLSGD16
,
939 1, /* size (0 = byte, 1 = short, 2 = long) */
941 FALSE
, /* pc_relative */
943 complain_overflow_signed
, /* complain_on_overflow */
944 ppc_elf_unhandled_reloc
, /* special_function */
945 "R_PPC_GOT_TLSGD16", /* name */
946 FALSE
, /* partial_inplace */
948 0xffff, /* dst_mask */
949 FALSE
), /* pcrel_offset */
951 /* Like GOT_TLSGD16, but no overflow. */
952 HOWTO (R_PPC_GOT_TLSGD16_LO
,
954 1, /* size (0 = byte, 1 = short, 2 = long) */
956 FALSE
, /* pc_relative */
958 complain_overflow_dont
, /* complain_on_overflow */
959 ppc_elf_unhandled_reloc
, /* special_function */
960 "R_PPC_GOT_TLSGD16_LO", /* name */
961 FALSE
, /* partial_inplace */
963 0xffff, /* dst_mask */
964 FALSE
), /* pcrel_offset */
966 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
967 HOWTO (R_PPC_GOT_TLSGD16_HI
,
969 1, /* size (0 = byte, 1 = short, 2 = long) */
971 FALSE
, /* pc_relative */
973 complain_overflow_dont
, /* complain_on_overflow */
974 ppc_elf_unhandled_reloc
, /* special_function */
975 "R_PPC_GOT_TLSGD16_HI", /* name */
976 FALSE
, /* partial_inplace */
978 0xffff, /* dst_mask */
979 FALSE
), /* pcrel_offset */
981 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
982 HOWTO (R_PPC_GOT_TLSGD16_HA
,
984 1, /* size (0 = byte, 1 = short, 2 = long) */
986 FALSE
, /* pc_relative */
988 complain_overflow_dont
, /* complain_on_overflow */
989 ppc_elf_unhandled_reloc
, /* special_function */
990 "R_PPC_GOT_TLSGD16_HA", /* name */
991 FALSE
, /* partial_inplace */
993 0xffff, /* dst_mask */
994 FALSE
), /* pcrel_offset */
996 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
997 with values (sym+add)@dtpmod and zero, and computes the offset to the
999 HOWTO (R_PPC_GOT_TLSLD16
,
1001 1, /* size (0 = byte, 1 = short, 2 = long) */
1003 FALSE
, /* pc_relative */
1005 complain_overflow_signed
, /* complain_on_overflow */
1006 ppc_elf_unhandled_reloc
, /* special_function */
1007 "R_PPC_GOT_TLSLD16", /* name */
1008 FALSE
, /* partial_inplace */
1010 0xffff, /* dst_mask */
1011 FALSE
), /* pcrel_offset */
1013 /* Like GOT_TLSLD16, but no overflow. */
1014 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1016 1, /* size (0 = byte, 1 = short, 2 = long) */
1018 FALSE
, /* pc_relative */
1020 complain_overflow_dont
, /* complain_on_overflow */
1021 ppc_elf_unhandled_reloc
, /* special_function */
1022 "R_PPC_GOT_TLSLD16_LO", /* name */
1023 FALSE
, /* partial_inplace */
1025 0xffff, /* dst_mask */
1026 FALSE
), /* pcrel_offset */
1028 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1029 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1030 16, /* rightshift */
1031 1, /* size (0 = byte, 1 = short, 2 = long) */
1033 FALSE
, /* pc_relative */
1035 complain_overflow_dont
, /* complain_on_overflow */
1036 ppc_elf_unhandled_reloc
, /* special_function */
1037 "R_PPC_GOT_TLSLD16_HI", /* name */
1038 FALSE
, /* partial_inplace */
1040 0xffff, /* dst_mask */
1041 FALSE
), /* pcrel_offset */
1043 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1044 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1045 16, /* rightshift */
1046 1, /* size (0 = byte, 1 = short, 2 = long) */
1048 FALSE
, /* pc_relative */
1050 complain_overflow_dont
, /* complain_on_overflow */
1051 ppc_elf_unhandled_reloc
, /* special_function */
1052 "R_PPC_GOT_TLSLD16_HA", /* name */
1053 FALSE
, /* partial_inplace */
1055 0xffff, /* dst_mask */
1056 FALSE
), /* pcrel_offset */
1058 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1059 the offset to the entry. */
1060 HOWTO (R_PPC_GOT_DTPREL16
,
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE
, /* pc_relative */
1066 complain_overflow_signed
, /* complain_on_overflow */
1067 ppc_elf_unhandled_reloc
, /* special_function */
1068 "R_PPC_GOT_DTPREL16", /* name */
1069 FALSE
, /* partial_inplace */
1071 0xffff, /* dst_mask */
1072 FALSE
), /* pcrel_offset */
1074 /* Like GOT_DTPREL16, but no overflow. */
1075 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1079 FALSE
, /* pc_relative */
1081 complain_overflow_dont
, /* complain_on_overflow */
1082 ppc_elf_unhandled_reloc
, /* special_function */
1083 "R_PPC_GOT_DTPREL16_LO", /* name */
1084 FALSE
, /* partial_inplace */
1086 0xffff, /* dst_mask */
1087 FALSE
), /* pcrel_offset */
1089 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1090 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1091 16, /* rightshift */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE
, /* pc_relative */
1096 complain_overflow_dont
, /* complain_on_overflow */
1097 ppc_elf_unhandled_reloc
, /* special_function */
1098 "R_PPC_GOT_DTPREL16_HI", /* name */
1099 FALSE
, /* partial_inplace */
1101 0xffff, /* dst_mask */
1102 FALSE
), /* pcrel_offset */
1104 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1105 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1106 16, /* rightshift */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1109 FALSE
, /* pc_relative */
1111 complain_overflow_dont
, /* complain_on_overflow */
1112 ppc_elf_unhandled_reloc
, /* special_function */
1113 "R_PPC_GOT_DTPREL16_HA", /* name */
1114 FALSE
, /* partial_inplace */
1116 0xffff, /* dst_mask */
1117 FALSE
), /* pcrel_offset */
1119 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1120 offset to the entry. */
1121 HOWTO (R_PPC_GOT_TPREL16
,
1123 1, /* size (0 = byte, 1 = short, 2 = long) */
1125 FALSE
, /* pc_relative */
1127 complain_overflow_signed
, /* complain_on_overflow */
1128 ppc_elf_unhandled_reloc
, /* special_function */
1129 "R_PPC_GOT_TPREL16", /* name */
1130 FALSE
, /* partial_inplace */
1132 0xffff, /* dst_mask */
1133 FALSE
), /* pcrel_offset */
1135 /* Like GOT_TPREL16, but no overflow. */
1136 HOWTO (R_PPC_GOT_TPREL16_LO
,
1138 1, /* size (0 = byte, 1 = short, 2 = long) */
1140 FALSE
, /* pc_relative */
1142 complain_overflow_dont
, /* complain_on_overflow */
1143 ppc_elf_unhandled_reloc
, /* special_function */
1144 "R_PPC_GOT_TPREL16_LO", /* name */
1145 FALSE
, /* partial_inplace */
1147 0xffff, /* dst_mask */
1148 FALSE
), /* pcrel_offset */
1150 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1151 HOWTO (R_PPC_GOT_TPREL16_HI
,
1152 16, /* rightshift */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1155 FALSE
, /* pc_relative */
1157 complain_overflow_dont
, /* complain_on_overflow */
1158 ppc_elf_unhandled_reloc
, /* special_function */
1159 "R_PPC_GOT_TPREL16_HI", /* name */
1160 FALSE
, /* partial_inplace */
1162 0xffff, /* dst_mask */
1163 FALSE
), /* pcrel_offset */
1165 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1166 HOWTO (R_PPC_GOT_TPREL16_HA
,
1167 16, /* rightshift */
1168 1, /* size (0 = byte, 1 = short, 2 = long) */
1170 FALSE
, /* pc_relative */
1172 complain_overflow_dont
, /* complain_on_overflow */
1173 ppc_elf_unhandled_reloc
, /* special_function */
1174 "R_PPC_GOT_TPREL16_HA", /* name */
1175 FALSE
, /* partial_inplace */
1177 0xffff, /* dst_mask */
1178 FALSE
), /* pcrel_offset */
1180 /* The remaining relocs are from the Embedded ELF ABI, and are not
1181 in the SVR4 ELF ABI. */
1183 /* 32 bit value resulting from the addend minus the symbol. */
1184 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1186 2, /* size (0 = byte, 1 = short, 2 = long) */
1188 FALSE
, /* pc_relative */
1190 complain_overflow_bitfield
, /* complain_on_overflow */
1191 bfd_elf_generic_reloc
, /* special_function */
1192 "R_PPC_EMB_NADDR32", /* name */
1193 FALSE
, /* partial_inplace */
1195 0xffffffff, /* dst_mask */
1196 FALSE
), /* pcrel_offset */
1198 /* 16 bit value resulting from the addend minus the symbol. */
1199 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1201 1, /* size (0 = byte, 1 = short, 2 = long) */
1203 FALSE
, /* pc_relative */
1205 complain_overflow_bitfield
, /* complain_on_overflow */
1206 bfd_elf_generic_reloc
, /* special_function */
1207 "R_PPC_EMB_NADDR16", /* name */
1208 FALSE
, /* partial_inplace */
1210 0xffff, /* dst_mask */
1211 FALSE
), /* pcrel_offset */
1213 /* 16 bit value resulting from the addend minus the symbol. */
1214 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1216 1, /* size (0 = byte, 1 = short, 2 = long) */
1218 FALSE
, /* pc_relative */
1220 complain_overflow_dont
,/* complain_on_overflow */
1221 bfd_elf_generic_reloc
, /* special_function */
1222 "R_PPC_EMB_ADDR16_LO", /* name */
1223 FALSE
, /* partial_inplace */
1225 0xffff, /* dst_mask */
1226 FALSE
), /* pcrel_offset */
1228 /* The high order 16 bits of the addend minus the symbol. */
1229 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1230 16, /* rightshift */
1231 1, /* size (0 = byte, 1 = short, 2 = long) */
1233 FALSE
, /* pc_relative */
1235 complain_overflow_dont
, /* complain_on_overflow */
1236 bfd_elf_generic_reloc
, /* special_function */
1237 "R_PPC_EMB_NADDR16_HI", /* name */
1238 FALSE
, /* partial_inplace */
1240 0xffff, /* dst_mask */
1241 FALSE
), /* pcrel_offset */
1243 /* The high order 16 bits of the result of the addend minus the address,
1244 plus 1 if the contents of the low 16 bits, treated as a signed number,
1246 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1247 16, /* rightshift */
1248 1, /* size (0 = byte, 1 = short, 2 = long) */
1250 FALSE
, /* pc_relative */
1252 complain_overflow_dont
, /* complain_on_overflow */
1253 ppc_elf_addr16_ha_reloc
, /* special_function */
1254 "R_PPC_EMB_NADDR16_HA", /* name */
1255 FALSE
, /* partial_inplace */
1257 0xffff, /* dst_mask */
1258 FALSE
), /* pcrel_offset */
1260 /* 16 bit value resulting from allocating a 4 byte word to hold an
1261 address in the .sdata section, and returning the offset from
1262 _SDA_BASE_ for that relocation. */
1263 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE
, /* pc_relative */
1269 complain_overflow_bitfield
, /* complain_on_overflow */
1270 bfd_elf_generic_reloc
, /* special_function */
1271 "R_PPC_EMB_SDAI16", /* name */
1272 FALSE
, /* partial_inplace */
1274 0xffff, /* dst_mask */
1275 FALSE
), /* pcrel_offset */
1277 /* 16 bit value resulting from allocating a 4 byte word to hold an
1278 address in the .sdata2 section, and returning the offset from
1279 _SDA2_BASE_ for that relocation. */
1280 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE
, /* pc_relative */
1286 complain_overflow_bitfield
, /* complain_on_overflow */
1287 bfd_elf_generic_reloc
, /* special_function */
1288 "R_PPC_EMB_SDA2I16", /* name */
1289 FALSE
, /* partial_inplace */
1291 0xffff, /* dst_mask */
1292 FALSE
), /* pcrel_offset */
1294 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1295 small data items. */
1296 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE
, /* pc_relative */
1302 complain_overflow_signed
, /* complain_on_overflow */
1303 bfd_elf_generic_reloc
, /* special_function */
1304 "R_PPC_EMB_SDA2REL", /* name */
1305 FALSE
, /* partial_inplace */
1307 0xffff, /* dst_mask */
1308 FALSE
), /* pcrel_offset */
1310 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1311 signed offset from the appropriate base, and filling in the register
1312 field with the appropriate register (0, 2, or 13). */
1313 HOWTO (R_PPC_EMB_SDA21
, /* type */
1315 2, /* size (0 = byte, 1 = short, 2 = long) */
1317 FALSE
, /* pc_relative */
1319 complain_overflow_signed
, /* complain_on_overflow */
1320 bfd_elf_generic_reloc
, /* special_function */
1321 "R_PPC_EMB_SDA21", /* name */
1322 FALSE
, /* partial_inplace */
1324 0xffff, /* dst_mask */
1325 FALSE
), /* pcrel_offset */
1327 /* Relocation not handled: R_PPC_EMB_MRKREF */
1328 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1329 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1330 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1331 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1332 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1334 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1335 in the 16 bit signed offset from the appropriate base, and filling in the
1336 register field with the appropriate register (0, 2, or 13). */
1337 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1339 1, /* size (0 = byte, 1 = short, 2 = long) */
1341 TRUE
, /* pc_relative */
1343 complain_overflow_signed
, /* complain_on_overflow */
1344 bfd_elf_generic_reloc
, /* special_function */
1345 "R_PPC_EMB_RELSDA", /* name */
1346 FALSE
, /* partial_inplace */
1348 0xffff, /* dst_mask */
1349 FALSE
), /* pcrel_offset */
1351 /* A 16 bit relative relocation. */
1352 HOWTO (R_PPC_REL16
, /* type */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1356 TRUE
, /* pc_relative */
1358 complain_overflow_bitfield
, /* complain_on_overflow */
1359 bfd_elf_generic_reloc
, /* special_function */
1360 "R_PPC_REL16", /* name */
1361 FALSE
, /* partial_inplace */
1363 0xffff, /* dst_mask */
1364 TRUE
), /* pcrel_offset */
1366 /* A 16 bit relative relocation without overflow. */
1367 HOWTO (R_PPC_REL16_LO
, /* type */
1369 1, /* size (0 = byte, 1 = short, 2 = long) */
1371 TRUE
, /* pc_relative */
1373 complain_overflow_dont
,/* complain_on_overflow */
1374 bfd_elf_generic_reloc
, /* special_function */
1375 "R_PPC_REL16_LO", /* name */
1376 FALSE
, /* partial_inplace */
1378 0xffff, /* dst_mask */
1379 TRUE
), /* pcrel_offset */
1381 /* The high order 16 bits of a relative address. */
1382 HOWTO (R_PPC_REL16_HI
, /* type */
1383 16, /* rightshift */
1384 1, /* size (0 = byte, 1 = short, 2 = long) */
1386 TRUE
, /* pc_relative */
1388 complain_overflow_dont
, /* complain_on_overflow */
1389 bfd_elf_generic_reloc
, /* special_function */
1390 "R_PPC_REL16_HI", /* name */
1391 FALSE
, /* partial_inplace */
1393 0xffff, /* dst_mask */
1394 TRUE
), /* pcrel_offset */
1396 /* The high order 16 bits of a relative address, plus 1 if the contents of
1397 the low 16 bits, treated as a signed number, is negative. */
1398 HOWTO (R_PPC_REL16_HA
, /* type */
1399 16, /* rightshift */
1400 1, /* size (0 = byte, 1 = short, 2 = long) */
1402 TRUE
, /* pc_relative */
1404 complain_overflow_dont
, /* complain_on_overflow */
1405 ppc_elf_addr16_ha_reloc
, /* special_function */
1406 "R_PPC_REL16_HA", /* name */
1407 FALSE
, /* partial_inplace */
1409 0xffff, /* dst_mask */
1410 TRUE
), /* pcrel_offset */
1412 /* GNU extension to record C++ vtable hierarchy. */
1413 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1415 0, /* size (0 = byte, 1 = short, 2 = long) */
1417 FALSE
, /* pc_relative */
1419 complain_overflow_dont
, /* complain_on_overflow */
1420 NULL
, /* special_function */
1421 "R_PPC_GNU_VTINHERIT", /* name */
1422 FALSE
, /* partial_inplace */
1425 FALSE
), /* pcrel_offset */
1427 /* GNU extension to record C++ vtable member usage. */
1428 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1430 0, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE
, /* pc_relative */
1434 complain_overflow_dont
, /* complain_on_overflow */
1435 NULL
, /* special_function */
1436 "R_PPC_GNU_VTENTRY", /* name */
1437 FALSE
, /* partial_inplace */
1440 FALSE
), /* pcrel_offset */
1442 /* Phony reloc to handle AIX style TOC entries. */
1443 HOWTO (R_PPC_TOC16
, /* type */
1445 1, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE
, /* pc_relative */
1449 complain_overflow_signed
, /* complain_on_overflow */
1450 bfd_elf_generic_reloc
, /* special_function */
1451 "R_PPC_TOC16", /* name */
1452 FALSE
, /* partial_inplace */
1454 0xffff, /* dst_mask */
1455 FALSE
), /* pcrel_offset */
1458 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1461 ppc_elf_howto_init (void)
1463 unsigned int i
, type
;
1466 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1469 type
= ppc_elf_howto_raw
[i
].type
;
1470 if (type
>= (sizeof (ppc_elf_howto_table
)
1471 / sizeof (ppc_elf_howto_table
[0])))
1473 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1477 static reloc_howto_type
*
1478 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1479 bfd_reloc_code_real_type code
)
1481 enum elf_ppc_reloc_type r
;
1483 /* Initialize howto table if not already done. */
1484 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1485 ppc_elf_howto_init ();
1492 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
1493 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
1494 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
1495 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
1496 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
1497 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
1498 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
1499 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
1500 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
1501 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
1502 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
1503 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
1504 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
1505 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
1506 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
1507 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
1508 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
1509 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
1510 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
1511 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
1512 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
1513 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
1514 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
1515 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
1516 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
1517 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
1518 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
1519 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
1520 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
1521 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
1522 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
1523 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
1524 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
1525 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
1526 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
1527 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
1528 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
1529 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
1530 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
1531 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
1532 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
1533 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
1534 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
1535 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
1536 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
1537 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
1538 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
1539 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
1540 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
1541 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
1542 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
1543 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
1544 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
1545 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
1546 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
1547 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
1548 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
1549 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
1550 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
1551 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
1552 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
1553 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
1554 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
1555 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
1556 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
1557 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
1558 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
1559 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
1560 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
1561 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
1562 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
1563 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
1564 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
1565 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
1566 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
1567 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
1568 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
1569 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
1570 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
1571 case BFD_RELOC_16_PCREL
: r
= R_PPC_REL16
; break;
1572 case BFD_RELOC_LO16_PCREL
: r
= R_PPC_REL16_LO
; break;
1573 case BFD_RELOC_HI16_PCREL
: r
= R_PPC_REL16_HI
; break;
1574 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC_REL16_HA
; break;
1575 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
1576 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
1579 return ppc_elf_howto_table
[r
];
1582 static reloc_howto_type
*
1583 ppc_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1589 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1591 if (ppc_elf_howto_raw
[i
].name
!= NULL
1592 && strcasecmp (ppc_elf_howto_raw
[i
].name
, r_name
) == 0)
1593 return &ppc_elf_howto_raw
[i
];
1598 /* Set the howto pointer for a PowerPC ELF reloc. */
1601 ppc_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1603 Elf_Internal_Rela
*dst
)
1605 /* Initialize howto table if not already done. */
1606 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1607 ppc_elf_howto_init ();
1609 BFD_ASSERT (ELF32_R_TYPE (dst
->r_info
) < (unsigned int) R_PPC_max
);
1610 cache_ptr
->howto
= ppc_elf_howto_table
[ELF32_R_TYPE (dst
->r_info
)];
1612 /* Just because the above assert didn't trigger doesn't mean that
1613 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1614 if (!cache_ptr
->howto
)
1616 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
1617 abfd
, ELF32_R_TYPE (dst
->r_info
));
1618 bfd_set_error (bfd_error_bad_value
);
1620 cache_ptr
->howto
= ppc_elf_howto_table
[R_PPC_NONE
];
1624 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1626 static bfd_reloc_status_type
1627 ppc_elf_addr16_ha_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
1628 arelent
*reloc_entry
,
1630 void *data ATTRIBUTE_UNUSED
,
1631 asection
*input_section
,
1633 char **error_message ATTRIBUTE_UNUSED
)
1637 if (output_bfd
!= NULL
)
1639 reloc_entry
->address
+= input_section
->output_offset
;
1640 return bfd_reloc_ok
;
1643 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
1644 return bfd_reloc_outofrange
;
1646 if (bfd_is_com_section (symbol
->section
))
1649 relocation
= symbol
->value
;
1651 relocation
+= symbol
->section
->output_section
->vma
;
1652 relocation
+= symbol
->section
->output_offset
;
1653 relocation
+= reloc_entry
->addend
;
1654 if (reloc_entry
->howto
->pc_relative
)
1655 relocation
-= reloc_entry
->address
;
1657 reloc_entry
->addend
+= (relocation
& 0x8000) << 1;
1659 return bfd_reloc_continue
;
1662 static bfd_reloc_status_type
1663 ppc_elf_unhandled_reloc (bfd
*abfd
,
1664 arelent
*reloc_entry
,
1667 asection
*input_section
,
1669 char **error_message
)
1671 /* If this is a relocatable link (output_bfd test tells us), just
1672 call the generic function. Any adjustment will be done at final
1674 if (output_bfd
!= NULL
)
1675 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
1676 input_section
, output_bfd
, error_message
);
1678 if (error_message
!= NULL
)
1680 static char buf
[60];
1681 sprintf (buf
, _("generic linker can't handle %s"),
1682 reloc_entry
->howto
->name
);
1683 *error_message
= buf
;
1685 return bfd_reloc_dangerous
;
1688 /* Sections created by the linker. */
1690 typedef struct elf_linker_section
1692 /* Pointer to the bfd section. */
1696 /* Associated bss section name. */
1697 const char *bss_name
;
1698 /* Associated symbol name. */
1699 const char *sym_name
;
1700 /* Associated symbol. */
1701 struct elf_link_hash_entry
*sym
;
1702 } elf_linker_section_t
;
1704 /* Linked list of allocated pointer entries. This hangs off of the
1705 symbol lists, and provides allows us to return different pointers,
1706 based on different addend's. */
1708 typedef struct elf_linker_section_pointers
1710 /* next allocated pointer for this symbol */
1711 struct elf_linker_section_pointers
*next
;
1712 /* offset of pointer from beginning of section */
1716 /* which linker section this is */
1717 elf_linker_section_t
*lsect
;
1718 } elf_linker_section_pointers_t
;
1720 struct ppc_elf_obj_tdata
1722 struct elf_obj_tdata elf
;
1724 /* A mapping from local symbols to offsets into the various linker
1725 sections added. This is index by the symbol index. */
1726 elf_linker_section_pointers_t
**linker_section_pointers
;
1728 /* Flags used to auto-detect plt type. */
1729 unsigned int makes_plt_call
: 1;
1730 unsigned int has_rel16
: 1;
1733 #define ppc_elf_tdata(bfd) \
1734 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1736 #define elf_local_ptr_offsets(bfd) \
1737 (ppc_elf_tdata (bfd)->linker_section_pointers)
1739 #define is_ppc_elf(bfd) \
1740 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1741 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1743 /* Override the generic function because we store some extras. */
1746 ppc_elf_mkobject (bfd
*abfd
)
1748 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
1752 /* Fix bad default arch selected for a 32 bit input bfd when the
1753 default is 64 bit. */
1756 ppc_elf_object_p (bfd
*abfd
)
1758 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 64)
1760 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
1762 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
1764 /* Relies on arch after 64 bit default being 32 bit default. */
1765 abfd
->arch_info
= abfd
->arch_info
->next
;
1766 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
1772 /* Function to set whether a module needs the -mrelocatable bit set. */
1775 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
1777 BFD_ASSERT (!elf_flags_init (abfd
)
1778 || elf_elfheader (abfd
)->e_flags
== flags
);
1780 elf_elfheader (abfd
)->e_flags
= flags
;
1781 elf_flags_init (abfd
) = TRUE
;
1785 /* Support for core dump NOTE sections. */
1788 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1793 switch (note
->descsz
)
1798 case 268: /* Linux/PPC. */
1800 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1803 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1812 /* Make a ".reg/999" section. */
1813 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1814 size
, note
->descpos
+ offset
);
1818 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1820 switch (note
->descsz
)
1825 case 128: /* Linux/PPC elf_prpsinfo. */
1826 elf_tdata (abfd
)->core_program
1827 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
1828 elf_tdata (abfd
)->core_command
1829 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
1832 /* Note that for some reason, a spurious space is tacked
1833 onto the end of the args in some (at least one anyway)
1834 implementations, so strip it off if it exists. */
1837 char *command
= elf_tdata (abfd
)->core_command
;
1838 int n
= strlen (command
);
1840 if (0 < n
&& command
[n
- 1] == ' ')
1841 command
[n
- 1] = '\0';
1848 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
1860 va_start (ap
, note_type
);
1861 memset (data
, 0, 32);
1862 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
1863 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
1865 return elfcore_write_note (abfd
, buf
, bufsiz
,
1866 "CORE", note_type
, data
, sizeof (data
));
1877 va_start (ap
, note_type
);
1878 memset (data
, 0, 72);
1879 pid
= va_arg (ap
, long);
1880 bfd_put_32 (abfd
, pid
, data
+ 24);
1881 cursig
= va_arg (ap
, int);
1882 bfd_put_16 (abfd
, cursig
, data
+ 12);
1883 greg
= va_arg (ap
, const void *);
1884 memcpy (data
+ 72, greg
, 192);
1885 memset (data
+ 264, 0, 4);
1887 return elfcore_write_note (abfd
, buf
, bufsiz
,
1888 "CORE", note_type
, data
, sizeof (data
));
1893 /* Return address for Ith PLT stub in section PLT, for relocation REL
1894 or (bfd_vma) -1 if it should not be included. */
1897 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
1898 const asection
*plt ATTRIBUTE_UNUSED
,
1901 return rel
->address
;
1904 /* Handle a PowerPC specific section when reading an object file. This
1905 is called when bfd_section_from_shdr finds a section with an unknown
1909 ppc_elf_section_from_shdr (bfd
*abfd
,
1910 Elf_Internal_Shdr
*hdr
,
1917 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
1920 newsect
= hdr
->bfd_section
;
1921 flags
= bfd_get_section_flags (abfd
, newsect
);
1922 if (hdr
->sh_flags
& SHF_EXCLUDE
)
1923 flags
|= SEC_EXCLUDE
;
1925 if (hdr
->sh_type
== SHT_ORDERED
)
1926 flags
|= SEC_SORT_ENTRIES
;
1928 bfd_set_section_flags (abfd
, newsect
, flags
);
1932 /* Set up any other section flags and such that may be necessary. */
1935 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1936 Elf_Internal_Shdr
*shdr
,
1939 if ((asect
->flags
& (SEC_GROUP
| SEC_EXCLUDE
)) == SEC_EXCLUDE
)
1940 shdr
->sh_flags
|= SHF_EXCLUDE
;
1942 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
1943 shdr
->sh_type
= SHT_ORDERED
;
1948 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1949 need to bump up the number of section headers. */
1952 ppc_elf_additional_program_headers (bfd
*abfd
,
1953 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1958 s
= bfd_get_section_by_name (abfd
, ".sbss2");
1959 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
1962 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
1963 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
1969 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1970 .PPC.EMB.sbss0 a normal section, and not a bss section so
1971 that the linker doesn't crater when trying to make more than
1974 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
1976 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
1977 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
1978 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
1979 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
1980 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
1981 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
1982 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE
, 0 },
1983 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
1984 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
1985 { NULL
, 0, 0, 0, 0 }
1988 /* This is what we want for new plt/got. */
1989 static struct bfd_elf_special_section ppc_alt_plt
=
1990 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
1992 static const struct bfd_elf_special_section
*
1993 ppc_elf_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1995 const struct bfd_elf_special_section
*ssect
;
1997 /* See if this is one of the special sections. */
1998 if (sec
->name
== NULL
)
2001 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2005 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2006 ssect
= &ppc_alt_plt
;
2010 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2013 /* Very simple linked list structure for recording apuinfo values. */
2014 typedef struct apuinfo_list
2016 struct apuinfo_list
*next
;
2017 unsigned long value
;
2021 static apuinfo_list
*head
;
2025 apuinfo_list_init (void)
2031 apuinfo_list_add (unsigned long value
)
2033 apuinfo_list
*entry
= head
;
2035 while (entry
!= NULL
)
2037 if (entry
->value
== value
)
2039 entry
= entry
->next
;
2042 entry
= bfd_malloc (sizeof (* entry
));
2046 entry
->value
= value
;
2052 apuinfo_list_length (void)
2054 apuinfo_list
*entry
;
2055 unsigned long count
;
2057 for (entry
= head
, count
= 0;
2059 entry
= entry
->next
)
2065 static inline unsigned long
2066 apuinfo_list_element (unsigned long number
)
2068 apuinfo_list
* entry
;
2072 entry
= entry
->next
)
2075 return entry
? entry
->value
: 0;
2079 apuinfo_list_finish (void)
2081 apuinfo_list
*entry
;
2083 for (entry
= head
; entry
;)
2085 apuinfo_list
*next
= entry
->next
;
2093 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2094 #define APUINFO_LABEL "APUinfo"
2096 /* Scan the input BFDs and create a linked list of
2097 the APUinfo values that will need to be emitted. */
2100 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2105 unsigned num_input_sections
;
2106 bfd_size_type output_section_size
;
2108 unsigned num_entries
;
2109 unsigned long offset
;
2110 unsigned long length
;
2111 const char *error_message
= NULL
;
2113 if (link_info
== NULL
)
2116 /* Scan the input bfds, looking for apuinfo sections. */
2117 num_input_sections
= 0;
2118 output_section_size
= 0;
2120 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2122 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2125 ++ num_input_sections
;
2126 output_section_size
+= asec
->size
;
2130 /* We need at least one input sections
2131 in order to make merging worthwhile. */
2132 if (num_input_sections
< 1)
2135 /* Just make sure that the output section exists as well. */
2136 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2140 /* Allocate a buffer for the contents of the input sections. */
2141 buffer
= bfd_malloc (output_section_size
);
2146 apuinfo_list_init ();
2148 /* Read in the input sections contents. */
2149 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2151 unsigned long datum
;
2154 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2158 length
= asec
->size
;
2161 error_message
= _("corrupt or empty %s section in %B");
2165 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2166 || (bfd_bread (buffer
+ offset
, length
, ibfd
) != length
))
2168 error_message
= _("unable to read in %s section from %B");
2172 /* Process the contents of the section. */
2173 ptr
= buffer
+ offset
;
2174 error_message
= _("corrupt %s section in %B");
2176 /* Verify the contents of the header. Note - we have to
2177 extract the values this way in order to allow for a
2178 host whose endian-ness is different from the target. */
2179 datum
= bfd_get_32 (ibfd
, ptr
);
2180 if (datum
!= sizeof APUINFO_LABEL
)
2183 datum
= bfd_get_32 (ibfd
, ptr
+ 8);
2187 if (strcmp (ptr
+ 12, APUINFO_LABEL
) != 0)
2190 /* Get the number of bytes used for apuinfo entries. */
2191 datum
= bfd_get_32 (ibfd
, ptr
+ 4);
2192 if (datum
+ 20 != length
)
2195 /* Make sure that we do not run off the end of the section. */
2196 if (offset
+ length
> output_section_size
)
2199 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2200 for (i
= 0; i
< datum
; i
+= 4)
2201 apuinfo_list_add (bfd_get_32 (ibfd
, ptr
+ 20 + i
));
2203 /* Update the offset. */
2207 error_message
= NULL
;
2209 /* Compute the size of the output section. */
2210 num_entries
= apuinfo_list_length ();
2211 output_section_size
= 20 + num_entries
* 4;
2213 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2215 if (! bfd_set_section_size (abfd
, asec
, output_section_size
))
2217 error_message
= _("warning: unable to set size of %s section in %B");
2223 (*_bfd_error_handler
) (error_message
, ibfd
, APUINFO_SECTION_NAME
);
2226 /* Prevent the output section from accumulating the input sections'
2227 contents. We have already stored this in our linked list structure. */
2230 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2231 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2233 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2235 return (apuinfo_list_length ()
2236 && strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0);
2239 /* Finally we can generate the output section. */
2242 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2247 unsigned num_entries
;
2248 bfd_size_type length
;
2250 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2254 if (apuinfo_list_length () == 0)
2257 length
= asec
->size
;
2261 buffer
= bfd_malloc (length
);
2264 (*_bfd_error_handler
)
2265 (_("failed to allocate space for new APUinfo section."));
2269 /* Create the apuinfo header. */
2270 num_entries
= apuinfo_list_length ();
2271 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2272 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2273 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2274 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2277 for (i
= 0; i
< num_entries
; i
++)
2279 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2283 if (length
!= asec
->size
)
2284 (*_bfd_error_handler
) (_("failed to compute new APUinfo section."));
2286 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2287 (*_bfd_error_handler
) (_("failed to install new APUinfo section."));
2291 apuinfo_list_finish ();
2294 /* The following functions are specific to the ELF linker, while
2295 functions above are used generally. They appear in this file more
2296 or less in the order in which they are called. eg.
2297 ppc_elf_check_relocs is called early in the link process,
2298 ppc_elf_finish_dynamic_sections is one of the last functions
2301 /* The PPC linker needs to keep track of the number of relocs that it
2302 decides to copy as dynamic relocs in check_relocs for each symbol.
2303 This is so that it can later discard them if they are found to be
2304 unnecessary. We store the information in a field extending the
2305 regular ELF linker hash table. */
2307 struct ppc_elf_dyn_relocs
2309 struct ppc_elf_dyn_relocs
*next
;
2311 /* The input section of the reloc. */
2314 /* Total number of relocs copied for the input section. */
2315 bfd_size_type count
;
2317 /* Number of pc-relative relocs copied for the input section. */
2318 bfd_size_type pc_count
;
2321 /* Track PLT entries needed for a given symbol. We might need more
2322 than one glink entry per symbol. */
2325 struct plt_entry
*next
;
2327 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2328 This field stores the offset into .got2 used to initialise the
2329 GOT pointer reg. It will always be at least 32768 (and for
2330 current gcc this is the only offset used). */
2333 /* The .got2 section. */
2336 /* PLT refcount or offset. */
2339 bfd_signed_vma refcount
;
2343 /* .glink stub offset. */
2344 bfd_vma glink_offset
;
2347 /* Of those relocs that might be copied as dynamic relocs, this macro
2348 selects those that must be copied when linking a shared library,
2349 even when the symbol is local. */
2351 #define MUST_BE_DYN_RELOC(RTYPE) \
2352 ((RTYPE) != R_PPC_REL24 \
2353 && (RTYPE) != R_PPC_REL14 \
2354 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2355 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2356 && (RTYPE) != R_PPC_REL32)
2358 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2359 copying dynamic variables from a shared lib into an app's dynbss
2360 section, and instead use a dynamic relocation to point into the
2362 #define ELIMINATE_COPY_RELOCS 1
2364 /* PPC ELF linker hash entry. */
2366 struct ppc_elf_link_hash_entry
2368 struct elf_link_hash_entry elf
;
2370 /* If this symbol is used in the linker created sections, the processor
2371 specific backend uses this field to map the field into the offset
2372 from the beginning of the section. */
2373 elf_linker_section_pointers_t
*linker_section_pointer
;
2375 /* Track dynamic relocs copied for this symbol. */
2376 struct ppc_elf_dyn_relocs
*dyn_relocs
;
2378 /* Contexts in which symbol is used in the GOT (or TOC).
2379 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2380 corresponding relocs are encountered during check_relocs.
2381 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2382 indicate the corresponding GOT entry type is not needed. */
2383 #define TLS_GD 1 /* GD reloc. */
2384 #define TLS_LD 2 /* LD reloc. */
2385 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2386 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2387 #define TLS_TLS 16 /* Any TLS reloc. */
2388 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2391 /* Nonzero if we have seen a small data relocation referring to this
2393 unsigned char has_sda_refs
;
2396 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2398 /* PPC ELF linker hash table. */
2400 struct ppc_elf_link_hash_table
2402 struct elf_link_hash_table elf
;
2404 /* Short-cuts to get to dynamic linker sections. */
2414 elf_linker_section_t sdata
[2];
2417 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2420 /* The .got.plt section (VxWorks only)*/
2423 /* Shortcut to .__tls_get_addr. */
2424 struct elf_link_hash_entry
*tls_get_addr
;
2426 /* The bfd that forced an old-style PLT. */
2429 /* TLS local dynamic got entry handling. */
2431 bfd_signed_vma refcount
;
2435 /* Offset of PltResolve function in glink. */
2436 bfd_vma glink_pltresolve
;
2438 /* Size of reserved GOT entries. */
2439 unsigned int got_header_size
;
2440 /* Non-zero if allocating the header left a gap. */
2441 unsigned int got_gap
;
2443 /* The type of PLT we have chosen to use. */
2444 enum ppc_elf_plt_type plt_type
;
2446 /* Set if we should emit symbols for stubs. */
2447 unsigned int emit_stub_syms
:1;
2449 /* True if the target system is VxWorks. */
2450 unsigned int is_vxworks
:1;
2452 /* The size of PLT entries. */
2454 /* The distance between adjacent PLT slots. */
2456 /* The size of the first PLT entry. */
2457 int plt_initial_entry_size
;
2459 /* Small local sym to section mapping cache. */
2460 struct sym_sec_cache sym_sec
;
2463 /* Get the PPC ELF linker hash table from a link_info structure. */
2465 #define ppc_elf_hash_table(p) \
2466 ((struct ppc_elf_link_hash_table *) (p)->hash)
2468 /* Create an entry in a PPC ELF linker hash table. */
2470 static struct bfd_hash_entry
*
2471 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2472 struct bfd_hash_table
*table
,
2475 /* Allocate the structure if it has not already been allocated by a
2479 entry
= bfd_hash_allocate (table
,
2480 sizeof (struct ppc_elf_link_hash_entry
));
2485 /* Call the allocation method of the superclass. */
2486 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
2489 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
2490 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
2491 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
2497 /* Create a PPC ELF linker hash table. */
2499 static struct bfd_link_hash_table
*
2500 ppc_elf_link_hash_table_create (bfd
*abfd
)
2502 struct ppc_elf_link_hash_table
*ret
;
2504 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
2508 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
2509 ppc_elf_link_hash_newfunc
,
2510 sizeof (struct ppc_elf_link_hash_entry
)))
2516 ret
->elf
.init_plt_refcount
.refcount
= 0;
2517 ret
->elf
.init_plt_refcount
.glist
= NULL
;
2518 ret
->elf
.init_plt_offset
.offset
= 0;
2519 ret
->elf
.init_plt_offset
.glist
= NULL
;
2521 ret
->sdata
[0].name
= ".sdata";
2522 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
2523 ret
->sdata
[0].bss_name
= ".sbss";
2525 ret
->sdata
[1].name
= ".sdata2";
2526 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
2527 ret
->sdata
[1].bss_name
= ".sbss2";
2529 ret
->plt_entry_size
= 12;
2530 ret
->plt_slot_size
= 8;
2531 ret
->plt_initial_entry_size
= 72;
2533 return &ret
->elf
.root
;
2536 /* Create .got and the related sections. */
2539 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
2541 struct ppc_elf_link_hash_table
*htab
;
2545 if (!_bfd_elf_create_got_section (abfd
, info
))
2548 htab
= ppc_elf_hash_table (info
);
2549 htab
->got
= s
= bfd_get_section_by_name (abfd
, ".got");
2553 if (htab
->is_vxworks
)
2555 htab
->sgotplt
= bfd_get_section_by_name (abfd
, ".got.plt");
2561 /* The powerpc .got has a blrl instruction in it. Mark it
2563 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
2564 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2565 if (!bfd_set_section_flags (abfd
, s
, flags
))
2569 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2570 | SEC_LINKER_CREATED
| SEC_READONLY
);
2571 htab
->relgot
= bfd_make_section_with_flags (abfd
, ".rela.got", flags
);
2573 || ! bfd_set_section_alignment (abfd
, htab
->relgot
, 2))
2579 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2580 to output sections (just like _bfd_elf_create_dynamic_sections has
2581 to create .dynbss and .rela.bss). */
2584 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2586 struct ppc_elf_link_hash_table
*htab
;
2590 htab
= ppc_elf_hash_table (info
);
2592 if (htab
->got
== NULL
2593 && !ppc_elf_create_got (abfd
, info
))
2596 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
2599 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
2600 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2602 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
| SEC_CODE
);
2605 || !bfd_set_section_alignment (abfd
, s
, 4))
2608 htab
->dynbss
= bfd_get_section_by_name (abfd
, ".dynbss");
2609 s
= bfd_make_section_with_flags (abfd
, ".dynsbss",
2610 SEC_ALLOC
| SEC_LINKER_CREATED
);
2617 htab
->relbss
= bfd_get_section_by_name (abfd
, ".rela.bss");
2618 s
= bfd_make_section_with_flags (abfd
, ".rela.sbss", flags
);
2621 || ! bfd_set_section_alignment (abfd
, s
, 2))
2625 if (htab
->is_vxworks
2626 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
2629 htab
->relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2630 htab
->plt
= s
= bfd_get_section_by_name (abfd
, ".plt");
2634 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
2635 if (htab
->plt_type
== PLT_VXWORKS
)
2636 /* The VxWorks PLT is a loaded section with contents. */
2637 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
2638 return bfd_set_section_flags (abfd
, s
, flags
);
2641 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2644 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2645 struct elf_link_hash_entry
*dir
,
2646 struct elf_link_hash_entry
*ind
)
2648 struct ppc_elf_link_hash_entry
*edir
, *eind
;
2650 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
2651 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
2653 if (eind
->dyn_relocs
!= NULL
)
2655 if (edir
->dyn_relocs
!= NULL
)
2657 struct ppc_elf_dyn_relocs
**pp
;
2658 struct ppc_elf_dyn_relocs
*p
;
2660 /* Add reloc counts against the indirect sym to the direct sym
2661 list. Merge any entries against the same section. */
2662 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
2664 struct ppc_elf_dyn_relocs
*q
;
2666 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2667 if (q
->sec
== p
->sec
)
2669 q
->pc_count
+= p
->pc_count
;
2670 q
->count
+= p
->count
;
2677 *pp
= edir
->dyn_relocs
;
2680 edir
->dyn_relocs
= eind
->dyn_relocs
;
2681 eind
->dyn_relocs
= NULL
;
2684 edir
->tls_mask
|= eind
->tls_mask
;
2685 edir
->has_sda_refs
|= eind
->has_sda_refs
;
2687 /* If called to transfer flags for a weakdef during processing
2688 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2689 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2690 if (!(ELIMINATE_COPY_RELOCS
2691 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
2692 && edir
->elf
.dynamic_adjusted
))
2693 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
2695 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
2696 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
2697 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
2698 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
2699 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
2701 /* If we were called to copy over info for a weak sym, that's all. */
2702 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
2705 /* Copy over the GOT refcount entries that we may have already seen to
2706 the symbol which just became indirect. */
2707 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
2708 eind
->elf
.got
.refcount
= 0;
2710 /* And plt entries. */
2711 if (eind
->elf
.plt
.plist
!= NULL
)
2713 if (edir
->elf
.plt
.plist
!= NULL
)
2715 struct plt_entry
**entp
;
2716 struct plt_entry
*ent
;
2718 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
2720 struct plt_entry
*dent
;
2722 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
2723 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
2725 dent
->plt
.refcount
+= ent
->plt
.refcount
;
2732 *entp
= edir
->elf
.plt
.plist
;
2735 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
2736 eind
->elf
.plt
.plist
= NULL
;
2739 if (eind
->elf
.dynindx
!= -1)
2741 if (edir
->elf
.dynindx
!= -1)
2742 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
2743 edir
->elf
.dynstr_index
);
2744 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
2745 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
2746 eind
->elf
.dynindx
= -1;
2747 eind
->elf
.dynstr_index
= 0;
2751 /* Hook called by the linker routine which adds symbols from an object
2752 file. We use it to put .comm items in .sbss, and not .bss. */
2755 ppc_elf_add_symbol_hook (bfd
*abfd
,
2756 struct bfd_link_info
*info
,
2757 Elf_Internal_Sym
*sym
,
2758 const char **namep ATTRIBUTE_UNUSED
,
2759 flagword
*flagsp ATTRIBUTE_UNUSED
,
2763 if (sym
->st_shndx
== SHN_COMMON
2764 && !info
->relocatable
2765 && is_ppc_elf (info
->output_bfd
)
2766 && sym
->st_size
<= elf_gp_size (abfd
))
2768 /* Common symbols less than or equal to -G nn bytes are automatically
2770 struct ppc_elf_link_hash_table
*htab
;
2772 htab
= ppc_elf_hash_table (info
);
2773 if (htab
->sbss
== NULL
)
2775 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
2777 if (!htab
->elf
.dynobj
)
2778 htab
->elf
.dynobj
= abfd
;
2780 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
2783 if (htab
->sbss
== NULL
)
2788 *valp
= sym
->st_size
;
2795 create_sdata_sym (struct ppc_elf_link_hash_table
*htab
,
2796 elf_linker_section_t
*lsect
)
2798 lsect
->sym
= elf_link_hash_lookup (&htab
->elf
, lsect
->sym_name
,
2800 if (lsect
->sym
== NULL
)
2802 if (lsect
->sym
->root
.type
== bfd_link_hash_new
)
2803 lsect
->sym
->non_elf
= 0;
2804 lsect
->sym
->ref_regular
= 1;
2808 /* Create a special linker section. */
2811 ppc_elf_create_linker_section (bfd
*abfd
,
2812 struct bfd_link_info
*info
,
2814 elf_linker_section_t
*lsect
)
2816 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
2819 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2820 | SEC_LINKER_CREATED
);
2822 /* Record the first bfd that needs the special sections. */
2823 if (!htab
->elf
.dynobj
)
2824 htab
->elf
.dynobj
= abfd
;
2826 s
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
2830 || !bfd_set_section_alignment (htab
->elf
.dynobj
, s
, 2))
2834 return create_sdata_sym (htab
, lsect
);
2837 /* Find a linker generated pointer with a given addend and type. */
2839 static elf_linker_section_pointers_t
*
2840 elf_find_pointer_linker_section
2841 (elf_linker_section_pointers_t
*linker_pointers
,
2843 elf_linker_section_t
*lsect
)
2845 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
2846 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
2847 return linker_pointers
;
2852 /* Allocate a pointer to live in a linker created section. */
2855 elf_create_pointer_linker_section (bfd
*abfd
,
2856 elf_linker_section_t
*lsect
,
2857 struct elf_link_hash_entry
*h
,
2858 const Elf_Internal_Rela
*rel
)
2860 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
2861 elf_linker_section_pointers_t
*linker_section_ptr
;
2862 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
2865 BFD_ASSERT (lsect
!= NULL
);
2867 /* Is this a global symbol? */
2870 struct ppc_elf_link_hash_entry
*eh
;
2872 /* Has this symbol already been allocated? If so, our work is done. */
2873 eh
= (struct ppc_elf_link_hash_entry
*) h
;
2874 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
2879 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
2883 BFD_ASSERT (is_ppc_elf (abfd
));
2885 /* Allocation of a pointer to a local symbol. */
2886 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
2888 /* Allocate a table to hold the local symbols if first time. */
2891 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
2894 amt
*= sizeof (elf_linker_section_pointers_t
*);
2895 ptr
= bfd_zalloc (abfd
, amt
);
2900 elf_local_ptr_offsets (abfd
) = ptr
;
2903 /* Has this symbol already been allocated? If so, our work is done. */
2904 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
2909 ptr_linker_section_ptr
= &ptr
[r_symndx
];
2912 /* Allocate space for a pointer in the linker section, and allocate
2913 a new pointer record from internal memory. */
2914 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
2915 amt
= sizeof (elf_linker_section_pointers_t
);
2916 linker_section_ptr
= bfd_alloc (abfd
, amt
);
2918 if (!linker_section_ptr
)
2921 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
2922 linker_section_ptr
->addend
= rel
->r_addend
;
2923 linker_section_ptr
->lsect
= lsect
;
2924 *ptr_linker_section_ptr
= linker_section_ptr
;
2926 linker_section_ptr
->offset
= lsect
->section
->size
;
2927 lsect
->section
->size
+= 4;
2931 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2932 lsect
->name
, (long) linker_section_ptr
->offset
,
2933 (long) lsect
->section
->size
);
2940 update_local_sym_info (bfd
*abfd
,
2941 Elf_Internal_Shdr
*symtab_hdr
,
2942 unsigned long r_symndx
,
2945 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
2946 char *local_got_tls_masks
;
2948 if (local_got_refcounts
== NULL
)
2950 bfd_size_type size
= symtab_hdr
->sh_info
;
2952 size
*= sizeof (*local_got_refcounts
) + sizeof (*local_got_tls_masks
);
2953 local_got_refcounts
= bfd_zalloc (abfd
, size
);
2954 if (local_got_refcounts
== NULL
)
2956 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2959 local_got_refcounts
[r_symndx
] += 1;
2960 local_got_tls_masks
= (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
2961 local_got_tls_masks
[r_symndx
] |= tls_type
;
2966 update_plt_info (bfd
*abfd
, struct elf_link_hash_entry
*h
,
2967 asection
*sec
, bfd_vma addend
)
2969 struct plt_entry
*ent
;
2973 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
2974 if (ent
->sec
== sec
&& ent
->addend
== addend
)
2978 bfd_size_type amt
= sizeof (*ent
);
2979 ent
= bfd_alloc (abfd
, amt
);
2982 ent
->next
= h
->plt
.plist
;
2984 ent
->addend
= addend
;
2985 ent
->plt
.refcount
= 0;
2988 ent
->plt
.refcount
+= 1;
2992 static struct plt_entry
*
2993 find_plt_ent (struct elf_link_hash_entry
*h
, asection
*sec
, bfd_vma addend
)
2995 struct plt_entry
*ent
;
2999 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
3000 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3006 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3008 (*_bfd_error_handler
)
3009 (_("%B: relocation %s cannot be used when making a shared object"),
3011 ppc_elf_howto_table
[r_type
]->name
);
3012 bfd_set_error (bfd_error_bad_value
);
3015 /* Look through the relocs for a section during the first phase, and
3016 allocate space in the global offset table or procedure linkage
3020 ppc_elf_check_relocs (bfd
*abfd
,
3021 struct bfd_link_info
*info
,
3023 const Elf_Internal_Rela
*relocs
)
3025 struct ppc_elf_link_hash_table
*htab
;
3026 Elf_Internal_Shdr
*symtab_hdr
;
3027 struct elf_link_hash_entry
**sym_hashes
;
3028 const Elf_Internal_Rela
*rel
;
3029 const Elf_Internal_Rela
*rel_end
;
3030 asection
*got2
, *sreloc
;
3032 if (info
->relocatable
)
3035 /* Don't do anything special with non-loaded, non-alloced sections.
3036 In particular, any relocs in such sections should not affect GOT
3037 and PLT reference counting (ie. we don't allow them to create GOT
3038 or PLT entries), there's no possibility or desire to optimize TLS
3039 relocs, and there's not much point in propagating relocs to shared
3040 libs that the dynamic linker won't relocate. */
3041 if ((sec
->flags
& SEC_ALLOC
) == 0)
3045 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3049 BFD_ASSERT (is_ppc_elf (abfd
));
3051 /* Initialize howto table if not already done. */
3052 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3053 ppc_elf_howto_init ();
3055 htab
= ppc_elf_hash_table (info
);
3056 symtab_hdr
= &elf_symtab_hdr (abfd
);
3057 sym_hashes
= elf_sym_hashes (abfd
);
3058 got2
= bfd_get_section_by_name (abfd
, ".got2");
3061 rel_end
= relocs
+ sec
->reloc_count
;
3062 for (rel
= relocs
; rel
< rel_end
; rel
++)
3064 unsigned long r_symndx
;
3065 enum elf_ppc_reloc_type r_type
;
3066 struct elf_link_hash_entry
*h
;
3069 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3070 if (r_symndx
< symtab_hdr
->sh_info
)
3074 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3075 while (h
->root
.type
== bfd_link_hash_indirect
3076 || h
->root
.type
== bfd_link_hash_warning
)
3077 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3080 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3081 This shows up in particular in an R_PPC_ADDR32 in the eabi
3084 && htab
->got
== NULL
3085 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3087 if (htab
->elf
.dynobj
== NULL
)
3088 htab
->elf
.dynobj
= abfd
;
3089 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3091 BFD_ASSERT (h
== htab
->elf
.hgot
);
3094 r_type
= ELF32_R_TYPE (rel
->r_info
);
3097 case R_PPC_GOT_TLSLD16
:
3098 case R_PPC_GOT_TLSLD16_LO
:
3099 case R_PPC_GOT_TLSLD16_HI
:
3100 case R_PPC_GOT_TLSLD16_HA
:
3101 tls_type
= TLS_TLS
| TLS_LD
;
3104 case R_PPC_GOT_TLSGD16
:
3105 case R_PPC_GOT_TLSGD16_LO
:
3106 case R_PPC_GOT_TLSGD16_HI
:
3107 case R_PPC_GOT_TLSGD16_HA
:
3108 tls_type
= TLS_TLS
| TLS_GD
;
3111 case R_PPC_GOT_TPREL16
:
3112 case R_PPC_GOT_TPREL16_LO
:
3113 case R_PPC_GOT_TPREL16_HI
:
3114 case R_PPC_GOT_TPREL16_HA
:
3116 info
->flags
|= DF_STATIC_TLS
;
3117 tls_type
= TLS_TLS
| TLS_TPREL
;
3120 case R_PPC_GOT_DTPREL16
:
3121 case R_PPC_GOT_DTPREL16_LO
:
3122 case R_PPC_GOT_DTPREL16_HI
:
3123 case R_PPC_GOT_DTPREL16_HA
:
3124 tls_type
= TLS_TLS
| TLS_DTPREL
;
3126 sec
->has_tls_reloc
= 1;
3129 /* GOT16 relocations */
3131 case R_PPC_GOT16_LO
:
3132 case R_PPC_GOT16_HI
:
3133 case R_PPC_GOT16_HA
:
3134 /* This symbol requires a global offset table entry. */
3135 if (htab
->got
== NULL
)
3137 if (htab
->elf
.dynobj
== NULL
)
3138 htab
->elf
.dynobj
= abfd
;
3139 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3144 h
->got
.refcount
+= 1;
3145 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
3148 /* This is a global offset table entry for a local symbol. */
3149 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
3153 /* Indirect .sdata relocation. */
3154 case R_PPC_EMB_SDAI16
:
3157 bad_shared_reloc (abfd
, r_type
);
3160 if (htab
->sdata
[0].section
== NULL
3161 && !ppc_elf_create_linker_section (abfd
, info
, 0,
3164 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[0],
3169 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3170 h
->non_got_ref
= TRUE
;
3174 /* Indirect .sdata2 relocation. */
3175 case R_PPC_EMB_SDA2I16
:
3178 bad_shared_reloc (abfd
, r_type
);
3181 if (htab
->sdata
[1].section
== NULL
3182 && !ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3185 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[1],
3190 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3191 h
->non_got_ref
= TRUE
;
3195 case R_PPC_SDAREL16
:
3198 bad_shared_reloc (abfd
, r_type
);
3201 if (htab
->sdata
[0].sym
== NULL
3202 && !create_sdata_sym (htab
, &htab
->sdata
[0]))
3206 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3207 h
->non_got_ref
= TRUE
;
3211 case R_PPC_EMB_SDA2REL
:
3214 bad_shared_reloc (abfd
, r_type
);
3217 if (htab
->sdata
[1].sym
== NULL
3218 && !create_sdata_sym (htab
, &htab
->sdata
[1]))
3222 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3223 h
->non_got_ref
= TRUE
;
3227 case R_PPC_EMB_SDA21
:
3228 case R_PPC_EMB_RELSDA
:
3231 bad_shared_reloc (abfd
, r_type
);
3234 if (htab
->sdata
[0].sym
== NULL
3235 && !create_sdata_sym (htab
, &htab
->sdata
[0]))
3237 if (htab
->sdata
[1].sym
== NULL
3238 && !create_sdata_sym (htab
, &htab
->sdata
[1]))
3242 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3243 h
->non_got_ref
= TRUE
;
3247 case R_PPC_EMB_NADDR32
:
3248 case R_PPC_EMB_NADDR16
:
3249 case R_PPC_EMB_NADDR16_LO
:
3250 case R_PPC_EMB_NADDR16_HI
:
3251 case R_PPC_EMB_NADDR16_HA
:
3254 bad_shared_reloc (abfd
, r_type
);
3258 h
->non_got_ref
= TRUE
;
3262 case R_PPC_PLTREL24
:
3263 case R_PPC_PLTREL32
:
3264 case R_PPC_PLT16_LO
:
3265 case R_PPC_PLT16_HI
:
3266 case R_PPC_PLT16_HA
:
3268 fprintf (stderr
, "Reloc requires a PLT entry\n");
3270 /* This symbol requires a procedure linkage table entry. We
3271 actually build the entry in finish_dynamic_symbol,
3272 because this might be a case of linking PIC code without
3273 linking in any dynamic objects, in which case we don't
3274 need to generate a procedure linkage table after all. */
3278 /* It does not make sense to have a procedure linkage
3279 table entry for a local symbol. */
3280 (*_bfd_error_handler
) (_("%B(%A+0x%lx): %s reloc against "
3284 (long) rel
->r_offset
,
3285 ppc_elf_howto_table
[r_type
]->name
);
3286 bfd_set_error (bfd_error_bad_value
);
3293 if (r_type
== R_PPC_PLTREL24
)
3295 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
3296 addend
= rel
->r_addend
;
3299 if (!update_plt_info (abfd
, h
, got2
, addend
))
3304 /* The following relocations don't need to propagate the
3305 relocation if linking a shared object since they are
3306 section relative. */
3308 case R_PPC_SECTOFF_LO
:
3309 case R_PPC_SECTOFF_HI
:
3310 case R_PPC_SECTOFF_HA
:
3311 case R_PPC_DTPREL16
:
3312 case R_PPC_DTPREL16_LO
:
3313 case R_PPC_DTPREL16_HI
:
3314 case R_PPC_DTPREL16_HA
:
3319 case R_PPC_REL16_LO
:
3320 case R_PPC_REL16_HI
:
3321 case R_PPC_REL16_HA
:
3322 ppc_elf_tdata (abfd
)->has_rel16
= 1;
3325 /* These are just markers. */
3327 case R_PPC_EMB_MRKREF
:
3332 /* These should only appear in dynamic objects. */
3334 case R_PPC_GLOB_DAT
:
3335 case R_PPC_JMP_SLOT
:
3336 case R_PPC_RELATIVE
:
3339 /* These aren't handled yet. We'll report an error later. */
3341 case R_PPC_EMB_RELSEC16
:
3342 case R_PPC_EMB_RELST_LO
:
3343 case R_PPC_EMB_RELST_HI
:
3344 case R_PPC_EMB_RELST_HA
:
3345 case R_PPC_EMB_BIT_FLD
:
3348 /* This refers only to functions defined in the shared library. */
3349 case R_PPC_LOCAL24PC
:
3350 if (h
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
3352 htab
->plt_type
= PLT_OLD
;
3353 htab
->old_bfd
= abfd
;
3357 /* This relocation describes the C++ object vtable hierarchy.
3358 Reconstruct it for later use during GC. */
3359 case R_PPC_GNU_VTINHERIT
:
3360 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3364 /* This relocation describes which C++ vtable entries are actually
3365 used. Record for later use during GC. */
3366 case R_PPC_GNU_VTENTRY
:
3367 BFD_ASSERT (h
!= NULL
);
3369 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3373 /* We shouldn't really be seeing these. */
3376 info
->flags
|= DF_STATIC_TLS
;
3380 case R_PPC_DTPMOD32
:
3381 case R_PPC_DTPREL32
:
3385 case R_PPC_TPREL16_LO
:
3386 case R_PPC_TPREL16_HI
:
3387 case R_PPC_TPREL16_HA
:
3389 info
->flags
|= DF_STATIC_TLS
;
3394 case R_PPC_ADDR16_LO
:
3395 case R_PPC_ADDR16_HI
:
3396 case R_PPC_ADDR16_HA
:
3399 if (h
!= NULL
&& !info
->shared
)
3401 /* We may need a plt entry if the symbol turns out to be
3402 a function defined in a dynamic object. */
3403 if (!update_plt_info (abfd
, h
, NULL
, 0))
3406 /* We may need a copy reloc too. */
3408 h
->pointer_equality_needed
= 1;
3415 && (sec
->flags
& SEC_CODE
) != 0
3416 && (info
->shared
|| info
->pie
)
3417 && htab
->plt_type
== PLT_UNSET
)
3419 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3420 the start of a function, which assembles to a REL32
3421 reference to .got2. If we detect one of these, then
3422 force the old PLT layout because the linker cannot
3423 reliably deduce the GOT pointer value needed for
3427 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
3431 htab
->plt_type
= PLT_OLD
;
3432 htab
->old_bfd
= abfd
;
3435 if (h
== NULL
|| h
== htab
->elf
.hgot
)
3441 case R_PPC_REL14_BRTAKEN
:
3442 case R_PPC_REL14_BRNTAKEN
:
3445 if (h
== htab
->elf
.hgot
)
3447 if (htab
->plt_type
== PLT_UNSET
)
3449 htab
->plt_type
= PLT_OLD
;
3450 htab
->old_bfd
= abfd
;
3458 case R_PPC_ADDR14_BRTAKEN
:
3459 case R_PPC_ADDR14_BRNTAKEN
:
3461 if (h
!= NULL
&& !info
->shared
)
3463 /* We may need a plt entry if the symbol turns out to be
3464 a function defined in a dynamic object. */
3465 if (!update_plt_info (abfd
, h
, NULL
, 0))
3470 /* If we are creating a shared library, and this is a reloc
3471 against a global symbol, or a non PC relative reloc
3472 against a local symbol, then we need to copy the reloc
3473 into the shared library. However, if we are linking with
3474 -Bsymbolic, we do not need to copy a reloc against a
3475 global symbol which is defined in an object we are
3476 including in the link (i.e., DEF_REGULAR is set). At
3477 this point we have not seen all the input files, so it is
3478 possible that DEF_REGULAR is not set now but will be set
3479 later (it is never cleared). In case of a weak definition,
3480 DEF_REGULAR may be cleared later by a strong definition in
3481 a shared library. We account for that possibility below by
3482 storing information in the dyn_relocs field of the hash
3483 table entry. A similar situation occurs when creating
3484 shared libraries and symbol visibility changes render the
3487 If on the other hand, we are creating an executable, we
3488 may need to keep relocations for symbols satisfied by a
3489 dynamic library if we manage to avoid copy relocs for the
3492 && (MUST_BE_DYN_RELOC (r_type
)
3494 && (! info
->symbolic
3495 || h
->root
.type
== bfd_link_hash_defweak
3496 || !h
->def_regular
))))
3497 || (ELIMINATE_COPY_RELOCS
3500 && (h
->root
.type
== bfd_link_hash_defweak
3501 || !h
->def_regular
)))
3503 struct ppc_elf_dyn_relocs
*p
;
3504 struct ppc_elf_dyn_relocs
**head
;
3508 "ppc_elf_check_relocs needs to "
3509 "create relocation for %s\n",
3510 (h
&& h
->root
.root
.string
3511 ? h
->root
.root
.string
: "<unknown>"));
3517 name
= (bfd_elf_string_from_elf_section
3519 elf_elfheader (abfd
)->e_shstrndx
,
3520 elf_section_data (sec
)->rel_hdr
.sh_name
));
3524 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
3525 && strcmp (bfd_get_section_name (abfd
, sec
),
3528 if (htab
->elf
.dynobj
== NULL
)
3529 htab
->elf
.dynobj
= abfd
;
3530 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
3535 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
3536 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
3537 | SEC_ALLOC
| SEC_LOAD
);
3538 sreloc
= bfd_make_section_with_flags (htab
->elf
.dynobj
,
3542 || ! bfd_set_section_alignment (htab
->elf
.dynobj
,
3546 elf_section_data (sec
)->sreloc
= sreloc
;
3549 /* If this is a global symbol, we count the number of
3550 relocations we need for this symbol. */
3553 head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
3557 /* Track dynamic relocs needed for local syms too.
3558 We really need local syms available to do this
3564 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
3569 vpp
= &elf_section_data (s
)->local_dynrel
;
3570 head
= (struct ppc_elf_dyn_relocs
**) vpp
;
3574 if (p
== NULL
|| p
->sec
!= sec
)
3576 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
3587 if (!MUST_BE_DYN_RELOC (r_type
))
3599 /* Merge object attributes from IBFD into OBFD. Raise an error if
3600 there are conflicting attributes. */
3602 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
3604 obj_attribute
*in_attr
, *in_attrs
;
3605 obj_attribute
*out_attr
, *out_attrs
;
3607 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
3609 /* This is the first object. Copy the attributes. */
3610 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
3612 /* Use the Tag_null value to indicate the attributes have been
3614 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
3619 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
3620 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
3622 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3623 non-conflicting ones. */
3624 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
3625 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
3626 if (in_attr
->i
!= out_attr
->i
)
3629 if (out_attr
->i
== 0)
3630 out_attr
->i
= in_attr
->i
;
3631 else if (in_attr
->i
== 0)
3633 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
3635 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
3636 else if (out_attr
->i
== 2 && in_attr
->i
== 1)
3638 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
3639 else if (in_attr
->i
> 2)
3641 (_("Warning: %B uses unknown floating point ABI %d"), ibfd
,
3645 (_("Warning: %B uses unknown floating point ABI %d"), obfd
,
3649 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3650 merge non-conflicting ones. */
3651 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
3652 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
3653 if (in_attr
->i
!= out_attr
->i
)
3655 const char *in_abi
= NULL
, *out_abi
= NULL
;
3659 case 1: in_abi
= "generic"; break;
3660 case 2: in_abi
= "AltiVec"; break;
3661 case 3: in_abi
= "SPE"; break;
3664 switch (out_attr
->i
)
3666 case 1: out_abi
= "generic"; break;
3667 case 2: out_abi
= "AltiVec"; break;
3668 case 3: out_abi
= "SPE"; break;
3672 if (out_attr
->i
== 0)
3673 out_attr
->i
= in_attr
->i
;
3674 else if (in_attr
->i
== 0)
3676 /* For now, allow generic to transition to AltiVec or SPE
3677 without a warning. If GCC marked files with their stack
3678 alignment and used don't-care markings for files which are
3679 not affected by the vector ABI, we could warn about this
3681 else if (out_attr
->i
== 1)
3682 out_attr
->i
= in_attr
->i
;
3683 else if (in_attr
->i
== 1)
3685 else if (in_abi
== NULL
)
3687 (_("Warning: %B uses unknown vector ABI %d"), ibfd
,
3689 else if (out_abi
== NULL
)
3691 (_("Warning: %B uses unknown vector ABI %d"), obfd
,
3695 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3696 ibfd
, obfd
, in_abi
, out_abi
);
3699 /* Merge Tag_compatibility attributes and any common GNU ones. */
3700 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
3705 /* Merge backend specific data from an object file to the output
3706 object file when linking. */
3709 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3715 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
3718 /* Check if we have the same endianess. */
3719 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
3722 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
3725 new_flags
= elf_elfheader (ibfd
)->e_flags
;
3726 old_flags
= elf_elfheader (obfd
)->e_flags
;
3727 if (!elf_flags_init (obfd
))
3729 /* First call, no flags set. */
3730 elf_flags_init (obfd
) = TRUE
;
3731 elf_elfheader (obfd
)->e_flags
= new_flags
;
3734 /* Compatible flags are ok. */
3735 else if (new_flags
== old_flags
)
3738 /* Incompatible flags. */
3741 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3742 to be linked with either. */
3744 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
3745 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
3748 (*_bfd_error_handler
)
3749 (_("%B: compiled with -mrelocatable and linked with "
3750 "modules compiled normally"), ibfd
);
3752 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
3753 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
3756 (*_bfd_error_handler
)
3757 (_("%B: compiled normally and linked with "
3758 "modules compiled with -mrelocatable"), ibfd
);
3761 /* The output is -mrelocatable-lib iff both the input files are. */
3762 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
3763 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
3765 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3766 but each input file is either -mrelocatable or -mrelocatable-lib. */
3767 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
3768 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
3769 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
3770 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
3772 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3773 any module uses it. */
3774 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
3776 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
3777 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
3779 /* Warn about any other mismatches. */
3780 if (new_flags
!= old_flags
)
3783 (*_bfd_error_handler
)
3784 (_("%B: uses different e_flags (0x%lx) fields "
3785 "than previous modules (0x%lx)"),
3786 ibfd
, (long) new_flags
, (long) old_flags
);
3791 bfd_set_error (bfd_error_bad_value
);
3799 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3800 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3802 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3803 struct bfd_link_info
*info
,
3804 enum ppc_elf_plt_type plt_style
,
3807 struct ppc_elf_link_hash_table
*htab
;
3810 htab
= ppc_elf_hash_table (info
);
3812 if (htab
->plt_type
== PLT_UNSET
)
3814 if (plt_style
== PLT_OLD
)
3815 htab
->plt_type
= PLT_OLD
;
3819 enum ppc_elf_plt_type plt_type
= plt_style
;
3821 /* Look through the reloc flags left by ppc_elf_check_relocs.
3822 Use the old style bss plt if a file makes plt calls
3823 without using the new relocs, and if ld isn't given
3824 --secure-plt and we never see REL16 relocs. */
3825 if (plt_type
== PLT_UNSET
)
3827 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
3828 if (is_ppc_elf (ibfd
))
3830 if (ppc_elf_tdata (ibfd
)->has_rel16
)
3832 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
3835 htab
->old_bfd
= ibfd
;
3839 htab
->plt_type
= plt_type
;
3842 if (htab
->plt_type
== PLT_OLD
&& plt_style
== PLT_NEW
)
3843 info
->callbacks
->info (_("Using bss-plt due to %B"), htab
->old_bfd
);
3845 htab
->emit_stub_syms
= emit_stub_syms
;
3847 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
3849 if (htab
->plt_type
== PLT_NEW
)
3851 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
3852 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3854 /* The new PLT is a loaded section. */
3855 if (htab
->plt
!= NULL
3856 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
3859 /* The new GOT is not executable. */
3860 if (htab
->got
!= NULL
3861 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
3866 /* Stop an unused .glink section from affecting .text alignment. */
3867 if (htab
->glink
!= NULL
3868 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
3871 return htab
->plt_type
== PLT_NEW
;
3874 /* Return the section that should be marked against GC for a given
3878 ppc_elf_gc_mark_hook (asection
*sec
,
3879 struct bfd_link_info
*info
,
3880 Elf_Internal_Rela
*rel
,
3881 struct elf_link_hash_entry
*h
,
3882 Elf_Internal_Sym
*sym
)
3885 switch (ELF32_R_TYPE (rel
->r_info
))
3887 case R_PPC_GNU_VTINHERIT
:
3888 case R_PPC_GNU_VTENTRY
:
3892 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
3895 /* Update the got, plt and dynamic reloc reference counts for the
3896 section being removed. */
3899 ppc_elf_gc_sweep_hook (bfd
*abfd
,
3900 struct bfd_link_info
*info
,
3902 const Elf_Internal_Rela
*relocs
)
3904 struct ppc_elf_link_hash_table
*htab
;
3905 Elf_Internal_Shdr
*symtab_hdr
;
3906 struct elf_link_hash_entry
**sym_hashes
;
3907 bfd_signed_vma
*local_got_refcounts
;
3908 const Elf_Internal_Rela
*rel
, *relend
;
3911 if (info
->relocatable
)
3914 if ((sec
->flags
& SEC_ALLOC
) == 0)
3917 elf_section_data (sec
)->local_dynrel
= NULL
;
3919 htab
= ppc_elf_hash_table (info
);
3920 symtab_hdr
= &elf_symtab_hdr (abfd
);
3921 sym_hashes
= elf_sym_hashes (abfd
);
3922 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3923 got2
= bfd_get_section_by_name (abfd
, ".got2");
3925 relend
= relocs
+ sec
->reloc_count
;
3926 for (rel
= relocs
; rel
< relend
; rel
++)
3928 unsigned long r_symndx
;
3929 enum elf_ppc_reloc_type r_type
;
3930 struct elf_link_hash_entry
*h
= NULL
;
3932 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3933 if (r_symndx
>= symtab_hdr
->sh_info
)
3935 struct ppc_elf_dyn_relocs
**pp
, *p
;
3936 struct ppc_elf_link_hash_entry
*eh
;
3938 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3939 while (h
->root
.type
== bfd_link_hash_indirect
3940 || h
->root
.type
== bfd_link_hash_warning
)
3941 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3942 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3944 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
3947 /* Everything must go for SEC. */
3953 r_type
= ELF32_R_TYPE (rel
->r_info
);
3956 case R_PPC_GOT_TLSLD16
:
3957 case R_PPC_GOT_TLSLD16_LO
:
3958 case R_PPC_GOT_TLSLD16_HI
:
3959 case R_PPC_GOT_TLSLD16_HA
:
3960 case R_PPC_GOT_TLSGD16
:
3961 case R_PPC_GOT_TLSGD16_LO
:
3962 case R_PPC_GOT_TLSGD16_HI
:
3963 case R_PPC_GOT_TLSGD16_HA
:
3964 case R_PPC_GOT_TPREL16
:
3965 case R_PPC_GOT_TPREL16_LO
:
3966 case R_PPC_GOT_TPREL16_HI
:
3967 case R_PPC_GOT_TPREL16_HA
:
3968 case R_PPC_GOT_DTPREL16
:
3969 case R_PPC_GOT_DTPREL16_LO
:
3970 case R_PPC_GOT_DTPREL16_HI
:
3971 case R_PPC_GOT_DTPREL16_HA
:
3973 case R_PPC_GOT16_LO
:
3974 case R_PPC_GOT16_HI
:
3975 case R_PPC_GOT16_HA
:
3978 if (h
->got
.refcount
> 0)
3981 else if (local_got_refcounts
!= NULL
)
3983 if (local_got_refcounts
[r_symndx
] > 0)
3984 local_got_refcounts
[r_symndx
]--;
3990 case R_PPC_REL14_BRTAKEN
:
3991 case R_PPC_REL14_BRNTAKEN
:
3993 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4000 case R_PPC_ADDR16_LO
:
4001 case R_PPC_ADDR16_HI
:
4002 case R_PPC_ADDR16_HA
:
4004 case R_PPC_ADDR14_BRTAKEN
:
4005 case R_PPC_ADDR14_BRNTAKEN
:
4012 case R_PPC_PLTREL24
:
4013 case R_PPC_PLTREL32
:
4014 case R_PPC_PLT16_LO
:
4015 case R_PPC_PLT16_HI
:
4016 case R_PPC_PLT16_HA
:
4019 bfd_vma addend
= r_type
== R_PPC_PLTREL24
? rel
->r_addend
: 0;
4020 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
4021 if (ent
->plt
.refcount
> 0)
4022 ent
->plt
.refcount
-= 1;
4033 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
4036 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
4038 struct ppc_elf_link_hash_table
*htab
;
4040 htab
= ppc_elf_hash_table (info
);
4041 if (htab
->plt_type
== PLT_NEW
4042 && htab
->plt
!= NULL
4043 && htab
->plt
->output_section
!= NULL
)
4045 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
4046 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
4049 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4050 FALSE
, FALSE
, TRUE
);
4051 return _bfd_elf_tls_setup (obfd
, info
);
4054 /* Run through all the TLS relocs looking for optimization
4058 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
4059 struct bfd_link_info
*info
)
4063 struct ppc_elf_link_hash_table
*htab
;
4066 if (info
->relocatable
|| info
->shared
)
4069 htab
= ppc_elf_hash_table (info
);
4070 /* Make two passes through the relocs. First time check that tls
4071 relocs involved in setting up a tls_get_addr call are indeed
4072 followed by such a call. If they are not, exclude them from
4073 the optimizations done on the second pass. */
4074 for (pass
= 0; pass
< 2; ++pass
)
4075 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4077 Elf_Internal_Sym
*locsyms
= NULL
;
4078 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
4080 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4081 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
4083 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
4085 /* Read the relocations. */
4086 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
4088 if (relstart
== NULL
)
4091 relend
= relstart
+ sec
->reloc_count
;
4092 for (rel
= relstart
; rel
< relend
; rel
++)
4094 enum elf_ppc_reloc_type r_type
;
4095 unsigned long r_symndx
;
4096 struct elf_link_hash_entry
*h
= NULL
;
4098 char tls_set
, tls_clear
;
4099 bfd_boolean is_local
;
4100 int expecting_tls_get_addr
;
4101 bfd_signed_vma
*got_count
;
4103 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4104 if (r_symndx
>= symtab_hdr
->sh_info
)
4106 struct elf_link_hash_entry
**sym_hashes
;
4108 sym_hashes
= elf_sym_hashes (ibfd
);
4109 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4110 while (h
->root
.type
== bfd_link_hash_indirect
4111 || h
->root
.type
== bfd_link_hash_warning
)
4112 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4115 expecting_tls_get_addr
= 0;
4121 r_type
= ELF32_R_TYPE (rel
->r_info
);
4124 case R_PPC_GOT_TLSLD16
:
4125 case R_PPC_GOT_TLSLD16_LO
:
4126 expecting_tls_get_addr
= 1;
4129 case R_PPC_GOT_TLSLD16_HI
:
4130 case R_PPC_GOT_TLSLD16_HA
:
4131 /* These relocs should never be against a symbol
4132 defined in a shared lib. Leave them alone if
4133 that turns out to be the case. */
4142 case R_PPC_GOT_TLSGD16
:
4143 case R_PPC_GOT_TLSGD16_LO
:
4144 expecting_tls_get_addr
= 1;
4147 case R_PPC_GOT_TLSGD16_HI
:
4148 case R_PPC_GOT_TLSGD16_HA
:
4154 tls_set
= TLS_TLS
| TLS_TPRELGD
;
4158 case R_PPC_GOT_TPREL16
:
4159 case R_PPC_GOT_TPREL16_LO
:
4160 case R_PPC_GOT_TPREL16_HI
:
4161 case R_PPC_GOT_TPREL16_HA
:
4166 tls_clear
= TLS_TPREL
;
4178 if (!expecting_tls_get_addr
)
4181 if (rel
+ 1 < relend
)
4183 enum elf_ppc_reloc_type r_type2
;
4184 unsigned long r_symndx2
;
4185 struct elf_link_hash_entry
*h2
;
4187 /* The next instruction should be a call to
4188 __tls_get_addr. Peek at the reloc to be sure. */
4189 r_type2
= ELF32_R_TYPE (rel
[1].r_info
);
4190 r_symndx2
= ELF32_R_SYM (rel
[1].r_info
);
4191 if (r_symndx2
>= symtab_hdr
->sh_info
4192 && (r_type2
== R_PPC_REL14
4193 || r_type2
== R_PPC_REL14_BRTAKEN
4194 || r_type2
== R_PPC_REL14_BRNTAKEN
4195 || r_type2
== R_PPC_REL24
4196 || r_type2
== R_PPC_PLTREL24
))
4198 struct elf_link_hash_entry
**sym_hashes
;
4200 sym_hashes
= elf_sym_hashes (ibfd
);
4201 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
4202 while (h2
->root
.type
== bfd_link_hash_indirect
4203 || h2
->root
.type
== bfd_link_hash_warning
)
4204 h2
= ((struct elf_link_hash_entry
*)
4206 if (h2
== htab
->tls_get_addr
)
4211 /* Uh oh, we didn't find the expected call. We
4212 could just mark this symbol to exclude it
4213 from tls optimization but it's safer to skip
4214 the entire section. */
4215 sec
->has_tls_reloc
= 0;
4221 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
4222 got_count
= &h
->got
.refcount
;
4226 Elf_Internal_Sym
*sym
;
4227 bfd_signed_vma
*lgot_refs
;
4230 if (locsyms
== NULL
)
4232 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4233 if (locsyms
== NULL
)
4234 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
4235 symtab_hdr
->sh_info
,
4236 0, NULL
, NULL
, NULL
);
4237 if (locsyms
== NULL
)
4239 if (elf_section_data (sec
)->relocs
!= relstart
)
4244 sym
= locsyms
+ r_symndx
;
4245 lgot_refs
= elf_local_got_refcounts (ibfd
);
4246 if (lgot_refs
== NULL
)
4248 lgot_masks
= (char *) (lgot_refs
+ symtab_hdr
->sh_info
);
4249 tls_mask
= &lgot_masks
[r_symndx
];
4250 got_count
= &lgot_refs
[r_symndx
];
4255 /* We managed to get rid of a got entry. */
4260 if (expecting_tls_get_addr
)
4262 struct plt_entry
*ent
;
4264 ent
= find_plt_ent (htab
->tls_get_addr
, NULL
, 0);
4265 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
4266 ent
->plt
.refcount
-= 1;
4269 *tls_mask
|= tls_set
;
4270 *tls_mask
&= ~tls_clear
;
4273 if (elf_section_data (sec
)->relocs
!= relstart
)
4278 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
4280 if (!info
->keep_memory
)
4283 symtab_hdr
->contents
= (unsigned char *) locsyms
;
4289 /* Adjust a symbol defined by a dynamic object and referenced by a
4290 regular object. The current definition is in some section of the
4291 dynamic object, but we're not including those sections. We have to
4292 change the definition to something the rest of the link can
4296 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4297 struct elf_link_hash_entry
*h
)
4299 struct ppc_elf_link_hash_table
*htab
;
4303 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4304 h
->root
.root
.string
);
4307 /* Make sure we know what is going on here. */
4308 htab
= ppc_elf_hash_table (info
);
4309 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
4311 || h
->u
.weakdef
!= NULL
4314 && !h
->def_regular
)));
4316 /* Deal with function syms. */
4317 if (h
->type
== STT_FUNC
4320 /* Clear procedure linkage table information for any symbol that
4321 won't need a .plt entry. */
4322 struct plt_entry
*ent
;
4323 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4324 if (ent
->plt
.refcount
> 0)
4327 || SYMBOL_CALLS_LOCAL (info
, h
)
4328 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4329 && h
->root
.type
== bfd_link_hash_undefweak
))
4331 /* A PLT entry is not required/allowed when:
4333 1. We are not using ld.so; because then the PLT entry
4334 can't be set up, so we can't use one. In this case,
4335 ppc_elf_adjust_dynamic_symbol won't even be called.
4337 2. GC has rendered the entry unused.
4339 3. We know for certain that a call to this symbol
4340 will go to this object, or will remain undefined. */
4341 h
->plt
.plist
= NULL
;
4347 h
->plt
.plist
= NULL
;
4349 /* If this is a weak symbol, and there is a real definition, the
4350 processor independent code will have arranged for us to see the
4351 real definition first, and we can just use the same value. */
4352 if (h
->u
.weakdef
!= NULL
)
4354 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4355 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4356 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4357 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4358 if (ELIMINATE_COPY_RELOCS
)
4359 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
4363 /* This is a reference to a symbol defined by a dynamic object which
4364 is not a function. */
4366 /* If we are creating a shared library, we must presume that the
4367 only references to the symbol are via the global offset table.
4368 For such cases we need not do anything here; the relocations will
4369 be handled correctly by relocate_section. */
4373 /* If there are no references to this symbol that do not use the
4374 GOT, we don't need to generate a copy reloc. */
4375 if (!h
->non_got_ref
)
4378 /* If we didn't find any dynamic relocs in read-only sections, then
4379 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4380 We can't do this if there are any small data relocations. This
4381 doesn't work on VxWorks, where we can not have dynamic
4382 relocations (other than copy and jump slot relocations) in an
4384 if (ELIMINATE_COPY_RELOCS
4385 && !ppc_elf_hash_entry (h
)->has_sda_refs
4386 && !htab
->is_vxworks
)
4388 struct ppc_elf_dyn_relocs
*p
;
4389 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4391 s
= p
->sec
->output_section
;
4392 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
4405 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
4406 h
->root
.root
.string
);
4410 /* We must allocate the symbol in our .dynbss section, which will
4411 become part of the .bss section of the executable. There will be
4412 an entry for this symbol in the .dynsym section. The dynamic
4413 object will contain position independent code, so all references
4414 from the dynamic object to this symbol will go through the global
4415 offset table. The dynamic linker will use the .dynsym entry to
4416 determine the address it must put in the global offset table, so
4417 both the dynamic object and the regular object will refer to the
4418 same memory location for the variable.
4420 Of course, if the symbol is referenced using SDAREL relocs, we
4421 must instead allocate it in .sbss. */
4423 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4427 BFD_ASSERT (s
!= NULL
);
4429 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4430 copy the initial value out of the dynamic object and into the
4431 runtime process image. We need to remember the offset into the
4432 .rela.bss section we are going to use. */
4433 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4437 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4438 srel
= htab
->relsbss
;
4440 srel
= htab
->relbss
;
4441 BFD_ASSERT (srel
!= NULL
);
4442 srel
->size
+= sizeof (Elf32_External_Rela
);
4446 return _bfd_elf_adjust_dynamic_copy (h
, s
);
4449 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4450 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4451 specifying the addend on the plt relocation. For -fpic code, the sym
4452 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4453 xxxxxxxx.got2.plt_pic32.<callee>. */
4456 add_stub_sym (struct plt_entry
*ent
,
4457 struct elf_link_hash_entry
*h
,
4458 struct bfd_link_info
*info
)
4460 struct elf_link_hash_entry
*sh
;
4461 size_t len1
, len2
, len3
;
4464 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
4466 if (info
->shared
|| info
->pie
)
4467 stub
= ".plt_pic32.";
4469 stub
= ".plt_call32.";
4471 len1
= strlen (h
->root
.root
.string
);
4472 len2
= strlen (stub
);
4475 len3
= strlen (ent
->sec
->name
);
4476 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
4479 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
4481 memcpy (name
+ 8, ent
->sec
->name
, len3
);
4482 memcpy (name
+ 8 + len3
, stub
, len2
);
4483 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
4484 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
4487 if (sh
->root
.type
== bfd_link_hash_new
)
4489 sh
->root
.type
= bfd_link_hash_defined
;
4490 sh
->root
.u
.def
.section
= htab
->glink
;
4491 sh
->root
.u
.def
.value
= ent
->glink_offset
;
4492 sh
->ref_regular
= 1;
4493 sh
->def_regular
= 1;
4494 sh
->ref_regular_nonweak
= 1;
4495 sh
->forced_local
= 1;
4501 /* Allocate NEED contiguous space in .got, and return the offset.
4502 Handles allocation of the got header when crossing 32k. */
4505 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
4508 unsigned int max_before_header
;
4510 if (htab
->plt_type
== PLT_VXWORKS
)
4512 where
= htab
->got
->size
;
4513 htab
->got
->size
+= need
;
4517 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
4518 if (need
<= htab
->got_gap
)
4520 where
= max_before_header
- htab
->got_gap
;
4521 htab
->got_gap
-= need
;
4525 if (htab
->got
->size
+ need
> max_before_header
4526 && htab
->got
->size
<= max_before_header
)
4528 htab
->got_gap
= max_before_header
- htab
->got
->size
;
4529 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
4531 where
= htab
->got
->size
;
4532 htab
->got
->size
+= need
;
4538 /* Allocate space in associated reloc sections for dynamic relocs. */
4541 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
4543 struct bfd_link_info
*info
= inf
;
4544 struct ppc_elf_link_hash_entry
*eh
;
4545 struct ppc_elf_link_hash_table
*htab
;
4546 struct ppc_elf_dyn_relocs
*p
;
4548 if (h
->root
.type
== bfd_link_hash_indirect
)
4551 if (h
->root
.type
== bfd_link_hash_warning
)
4552 /* When warning symbols are created, they **replace** the "real"
4553 entry in the hash table, thus we never get to see the real
4554 symbol in a hash traversal. So look at it now. */
4555 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4557 htab
= ppc_elf_hash_table (info
);
4558 if (htab
->elf
.dynamic_sections_created
)
4560 struct plt_entry
*ent
;
4561 bfd_boolean doneone
= FALSE
;
4562 bfd_vma plt_offset
= 0, glink_offset
= 0;
4564 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4565 if (ent
->plt
.refcount
> 0)
4567 /* Make sure this symbol is output as a dynamic symbol. */
4568 if (h
->dynindx
== -1
4569 && !h
->forced_local
)
4571 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4576 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
4578 asection
*s
= htab
->plt
;
4580 if (htab
->plt_type
== PLT_NEW
)
4584 plt_offset
= s
->size
;
4587 ent
->plt
.offset
= plt_offset
;
4590 if (!doneone
|| info
->shared
|| info
->pie
)
4592 glink_offset
= s
->size
;
4593 s
->size
+= GLINK_ENTRY_SIZE
;
4599 h
->root
.u
.def
.section
= s
;
4600 h
->root
.u
.def
.value
= glink_offset
;
4602 ent
->glink_offset
= glink_offset
;
4604 if (htab
->emit_stub_syms
4605 && !add_stub_sym (ent
, h
, info
))
4612 /* If this is the first .plt entry, make room
4613 for the special first entry. */
4615 s
->size
+= htab
->plt_initial_entry_size
;
4617 /* The PowerPC PLT is actually composed of two
4618 parts, the first part is 2 words (for a load
4619 and a jump), and then there is a remaining
4620 word available at the end. */
4621 plt_offset
= (htab
->plt_initial_entry_size
4622 + (htab
->plt_slot_size
4624 - htab
->plt_initial_entry_size
)
4625 / htab
->plt_entry_size
)));
4627 /* If this symbol is not defined in a regular
4628 file, and we are not generating a shared
4629 library, then set the symbol to this location
4630 in the .plt. This is required to make
4631 function pointers compare as equal between
4632 the normal executable and the shared library. */
4636 h
->root
.u
.def
.section
= s
;
4637 h
->root
.u
.def
.value
= plt_offset
;
4640 /* Make room for this entry. */
4641 s
->size
+= htab
->plt_entry_size
;
4642 /* After the 8192nd entry, room for two entries
4644 if (htab
->plt_type
== PLT_OLD
4645 && (s
->size
- htab
->plt_initial_entry_size
)
4646 / htab
->plt_entry_size
4647 > PLT_NUM_SINGLE_ENTRIES
)
4648 s
->size
+= htab
->plt_entry_size
;
4650 ent
->plt
.offset
= plt_offset
;
4653 /* We also need to make an entry in the .rela.plt section. */
4656 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
4658 if (htab
->plt_type
== PLT_VXWORKS
)
4660 /* Allocate space for the unloaded relocations. */
4664 == (bfd_vma
) htab
->plt_initial_entry_size
)
4666 htab
->srelplt2
->size
4667 += sizeof (Elf32_External_Rela
)
4668 * VXWORKS_PLTRESOLVE_RELOCS
;
4671 htab
->srelplt2
->size
4672 += sizeof (Elf32_External_Rela
)
4673 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
;
4676 /* Every PLT entry has an associated GOT entry in
4678 htab
->sgotplt
->size
+= 4;
4684 ent
->plt
.offset
= (bfd_vma
) -1;
4687 ent
->plt
.offset
= (bfd_vma
) -1;
4691 h
->plt
.plist
= NULL
;
4697 h
->plt
.plist
= NULL
;
4701 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4702 if (eh
->elf
.got
.refcount
> 0)
4704 /* Make sure this symbol is output as a dynamic symbol. */
4705 if (eh
->elf
.dynindx
== -1
4706 && !eh
->elf
.forced_local
)
4708 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
4712 if (eh
->tls_mask
== (TLS_TLS
| TLS_LD
)
4713 && !eh
->elf
.def_dynamic
)
4715 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4716 htab
->tlsld_got
.refcount
+= 1;
4717 eh
->elf
.got
.offset
= (bfd_vma
) -1;
4722 unsigned int need
= 0;
4723 if ((eh
->tls_mask
& TLS_TLS
) != 0)
4725 if ((eh
->tls_mask
& TLS_LD
) != 0)
4727 if ((eh
->tls_mask
& TLS_GD
) != 0)
4729 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
4731 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
4736 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
4737 dyn
= htab
->elf
.dynamic_sections_created
;
4739 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
4740 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
4741 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
4743 /* All the entries we allocated need relocs.
4744 Except LD only needs one. */
4745 if ((eh
->tls_mask
& TLS_LD
) != 0)
4747 htab
->relgot
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
4752 eh
->elf
.got
.offset
= (bfd_vma
) -1;
4754 if (eh
->dyn_relocs
== NULL
)
4757 /* In the shared -Bsymbolic case, discard space allocated for
4758 dynamic pc-relative relocs against symbols which turn out to be
4759 defined in regular objects. For the normal shared case, discard
4760 space for relocs that have become local due to symbol visibility
4765 /* Relocs that use pc_count are those that appear on a call insn,
4766 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4767 generated via assembly. We want calls to protected symbols to
4768 resolve directly to the function rather than going via the plt.
4769 If people want function pointer comparisons to work as expected
4770 then they should avoid writing weird assembly. */
4771 if (SYMBOL_CALLS_LOCAL (info
, h
))
4773 struct ppc_elf_dyn_relocs
**pp
;
4775 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
4777 p
->count
-= p
->pc_count
;
4786 /* Also discard relocs on undefined weak syms with non-default
4788 if (eh
->dyn_relocs
!= NULL
4789 && h
->root
.type
== bfd_link_hash_undefweak
)
4791 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
4792 eh
->dyn_relocs
= NULL
;
4794 /* Make sure undefined weak symbols are output as a dynamic
4796 else if (h
->dynindx
== -1
4797 && !h
->forced_local
)
4799 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4804 else if (ELIMINATE_COPY_RELOCS
)
4806 /* For the non-shared case, discard space for relocs against
4807 symbols which turn out to need copy relocs or are not
4814 /* Make sure this symbol is output as a dynamic symbol.
4815 Undefined weak syms won't yet be marked as dynamic. */
4816 if (h
->dynindx
== -1
4817 && !h
->forced_local
)
4819 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4823 /* If that succeeded, we know we'll be keeping all the
4825 if (h
->dynindx
!= -1)
4829 eh
->dyn_relocs
= NULL
;
4834 /* Finally, allocate space. */
4835 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4837 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
4838 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
4844 /* Find any dynamic relocs that apply to read-only sections. */
4847 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *info
)
4849 struct ppc_elf_dyn_relocs
*p
;
4851 if (h
->root
.type
== bfd_link_hash_indirect
)
4854 if (h
->root
.type
== bfd_link_hash_warning
)
4855 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4857 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4859 asection
*s
= p
->sec
->output_section
;
4862 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
4863 == (SEC_READONLY
| SEC_ALLOC
)))
4865 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
4867 /* Not an error, just cut short the traversal. */
4874 /* Set the sizes of the dynamic sections. */
4877 ppc_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4878 struct bfd_link_info
*info
)
4880 struct ppc_elf_link_hash_table
*htab
;
4886 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
4889 htab
= ppc_elf_hash_table (info
);
4890 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
4892 if (elf_hash_table (info
)->dynamic_sections_created
)
4894 /* Set the contents of the .interp section to the interpreter. */
4895 if (info
->executable
)
4897 s
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".interp");
4898 BFD_ASSERT (s
!= NULL
);
4899 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
4900 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
4904 if (htab
->plt_type
== PLT_OLD
)
4905 htab
->got_header_size
= 16;
4906 else if (htab
->plt_type
== PLT_NEW
)
4907 htab
->got_header_size
= 12;
4909 /* Set up .got offsets for local syms, and space for local dynamic
4911 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4913 bfd_signed_vma
*local_got
;
4914 bfd_signed_vma
*end_local_got
;
4916 bfd_size_type locsymcount
;
4917 Elf_Internal_Shdr
*symtab_hdr
;
4919 if (!is_ppc_elf (ibfd
))
4922 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
4924 struct ppc_elf_dyn_relocs
*p
;
4926 for (p
= ((struct ppc_elf_dyn_relocs
*)
4927 elf_section_data (s
)->local_dynrel
);
4931 if (!bfd_is_abs_section (p
->sec
)
4932 && bfd_is_abs_section (p
->sec
->output_section
))
4934 /* Input section has been discarded, either because
4935 it is a copy of a linkonce section or due to
4936 linker script /DISCARD/, so we'll be discarding
4939 else if (p
->count
!= 0)
4941 elf_section_data (p
->sec
)->sreloc
->size
4942 += p
->count
* sizeof (Elf32_External_Rela
);
4943 if ((p
->sec
->output_section
->flags
4944 & (SEC_READONLY
| SEC_ALLOC
))
4945 == (SEC_READONLY
| SEC_ALLOC
))
4946 info
->flags
|= DF_TEXTREL
;
4951 local_got
= elf_local_got_refcounts (ibfd
);
4955 symtab_hdr
= &elf_symtab_hdr (ibfd
);
4956 locsymcount
= symtab_hdr
->sh_info
;
4957 end_local_got
= local_got
+ locsymcount
;
4958 lgot_masks
= (char *) end_local_got
;
4959 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
4962 if (*lgot_masks
== (TLS_TLS
| TLS_LD
))
4964 /* If just an LD reloc, we'll just use
4965 htab->tlsld_got.offset. */
4966 htab
->tlsld_got
.refcount
+= 1;
4967 *local_got
= (bfd_vma
) -1;
4971 unsigned int need
= 0;
4972 if ((*lgot_masks
& TLS_TLS
) != 0)
4974 if ((*lgot_masks
& TLS_GD
) != 0)
4976 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
4978 if ((*lgot_masks
& TLS_DTPREL
) != 0)
4983 *local_got
= allocate_got (htab
, need
);
4985 htab
->relgot
->size
+= (need
4986 * (sizeof (Elf32_External_Rela
) / 4));
4990 *local_got
= (bfd_vma
) -1;
4993 /* Allocate space for global sym dynamic relocs. */
4994 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
4996 if (htab
->tlsld_got
.refcount
> 0)
4998 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
5000 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
5003 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
5005 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
5007 unsigned int g_o_t
= 32768;
5009 /* If we haven't allocated the header, do so now. When we get here,
5010 for old plt/got the got size will be 0 to 32764 (not allocated),
5011 or 32780 to 65536 (header allocated). For new plt/got, the
5012 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5013 if (htab
->got
->size
<= 32768)
5015 g_o_t
= htab
->got
->size
;
5016 if (htab
->plt_type
== PLT_OLD
)
5018 htab
->got
->size
+= htab
->got_header_size
;
5021 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
5024 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
5026 htab
->glink_pltresolve
= htab
->glink
->size
;
5027 /* Space for the branch table. */
5028 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
5029 /* Pad out to align the start of PLTresolve. */
5030 htab
->glink
->size
+= -htab
->glink
->size
& 15;
5031 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
5033 if (htab
->emit_stub_syms
)
5035 struct elf_link_hash_entry
*sh
;
5036 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
5037 TRUE
, FALSE
, FALSE
);
5040 if (sh
->root
.type
== bfd_link_hash_new
)
5042 sh
->root
.type
= bfd_link_hash_defined
;
5043 sh
->root
.u
.def
.section
= htab
->glink
;
5044 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
5045 sh
->ref_regular
= 1;
5046 sh
->def_regular
= 1;
5047 sh
->ref_regular_nonweak
= 1;
5048 sh
->forced_local
= 1;
5051 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
5052 TRUE
, FALSE
, FALSE
);
5055 if (sh
->root
.type
== bfd_link_hash_new
)
5057 sh
->root
.type
= bfd_link_hash_defined
;
5058 sh
->root
.u
.def
.section
= htab
->glink
;
5059 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
5060 sh
->ref_regular
= 1;
5061 sh
->def_regular
= 1;
5062 sh
->ref_regular_nonweak
= 1;
5063 sh
->forced_local
= 1;
5069 /* We've now determined the sizes of the various dynamic sections.
5070 Allocate memory for them. */
5072 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5074 bfd_boolean strip_section
= TRUE
;
5076 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5082 || s
== htab
->sgotplt
5084 || s
== htab
->dynbss
5085 || s
== htab
->dynsbss
)
5087 /* We'd like to strip these sections if they aren't needed, but if
5088 we've exported dynamic symbols from them we must leave them.
5089 It's too late to tell BFD to get rid of the symbols. */
5090 if ((s
== htab
->plt
|| s
== htab
->got
) && htab
->elf
.hplt
!= NULL
)
5091 strip_section
= FALSE
;
5092 /* Strip this section if we don't need it; see the
5095 else if (s
== htab
->sdata
[0].section
5096 || s
== htab
->sdata
[1].section
)
5098 /* Strip these too. */
5100 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
5104 /* Remember whether there are any relocation sections. */
5107 /* We use the reloc_count field as a counter if we need
5108 to copy relocs into the output file. */
5114 /* It's not one of our sections, so don't allocate space. */
5118 if (s
->size
== 0 && strip_section
)
5120 /* If we don't need this section, strip it from the
5121 output file. This is mostly to handle .rela.bss and
5122 .rela.plt. We must create both sections in
5123 create_dynamic_sections, because they must be created
5124 before the linker maps input sections to output
5125 sections. The linker does that before
5126 adjust_dynamic_symbol is called, and it is that
5127 function which decides whether anything needs to go
5128 into these sections. */
5129 s
->flags
|= SEC_EXCLUDE
;
5133 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
5136 /* Allocate memory for the section contents. */
5137 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
5138 if (s
->contents
== NULL
)
5142 if (htab
->elf
.dynamic_sections_created
)
5144 /* Add some entries to the .dynamic section. We fill in the
5145 values later, in ppc_elf_finish_dynamic_sections, but we
5146 must add the entries now so that we get the correct size for
5147 the .dynamic section. The DT_DEBUG entry is filled in by the
5148 dynamic linker and used by the debugger. */
5149 #define add_dynamic_entry(TAG, VAL) \
5150 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5152 if (info
->executable
)
5154 if (!add_dynamic_entry (DT_DEBUG
, 0))
5158 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
5160 if (!add_dynamic_entry (DT_PLTGOT
, 0)
5161 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
5162 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
5163 || !add_dynamic_entry (DT_JMPREL
, 0))
5167 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
5169 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
5175 if (!add_dynamic_entry (DT_RELA
, 0)
5176 || !add_dynamic_entry (DT_RELASZ
, 0)
5177 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
5181 /* If any dynamic relocs apply to a read-only section, then we
5182 need a DT_TEXTREL entry. */
5183 if ((info
->flags
& DF_TEXTREL
) == 0)
5184 elf_link_hash_traverse (elf_hash_table (info
), readonly_dynrelocs
,
5187 if ((info
->flags
& DF_TEXTREL
) != 0)
5189 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5192 if (htab
->is_vxworks
5193 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
5196 #undef add_dynamic_entry
5201 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5204 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
5206 if (h
->plt
.plist
!= NULL
5208 && (!h
->pointer_equality_needed
5209 || !h
->ref_regular_nonweak
))
5212 return _bfd_elf_hash_symbol (h
);
5215 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5217 static const int shared_stub_entry
[] =
5219 0x7c0802a6, /* mflr 0 */
5220 0x429f0005, /* bcl 20, 31, .Lxxx */
5221 0x7d6802a6, /* mflr 11 */
5222 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5223 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5224 0x7c0803a6, /* mtlr 0 */
5225 0x7d6903a6, /* mtctr 11 */
5226 0x4e800420, /* bctr */
5229 static const int stub_entry
[] =
5231 0x3d600000, /* lis 11,xxx@ha */
5232 0x396b0000, /* addi 11,11,xxx@l */
5233 0x7d6903a6, /* mtctr 11 */
5234 0x4e800420, /* bctr */
5238 ppc_elf_relax_section (bfd
*abfd
,
5240 struct bfd_link_info
*link_info
,
5245 struct one_fixup
*next
;
5251 Elf_Internal_Shdr
*symtab_hdr
;
5252 bfd_byte
*contents
= NULL
;
5253 Elf_Internal_Sym
*isymbuf
= NULL
;
5254 Elf_Internal_Rela
*internal_relocs
= NULL
;
5255 Elf_Internal_Rela
*irel
, *irelend
;
5256 struct one_fixup
*fixups
= NULL
;
5257 bfd_boolean changed
;
5258 struct ppc_elf_link_hash_table
*htab
;
5259 bfd_size_type trampoff
;
5264 /* Nothing to do if there are no relocations, and no need to do
5265 anything with non-alloc sections. */
5266 if ((isec
->flags
& SEC_ALLOC
) == 0
5267 || (isec
->flags
& SEC_RELOC
) == 0
5268 || isec
->reloc_count
== 0)
5271 trampoff
= (isec
->size
+ 3) & (bfd_vma
) -4;
5272 /* Space for a branch around any trampolines. */
5275 symtab_hdr
= &elf_symtab_hdr (abfd
);
5277 /* Get a copy of the native relocations. */
5278 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
5279 link_info
->keep_memory
);
5280 if (internal_relocs
== NULL
)
5283 htab
= ppc_elf_hash_table (link_info
);
5284 got2
= bfd_get_section_by_name (abfd
, ".got2");
5286 irelend
= internal_relocs
+ isec
->reloc_count
;
5287 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
5289 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
5290 bfd_vma symaddr
, reladdr
, toff
, roff
;
5292 struct one_fixup
*f
;
5293 size_t insn_offset
= 0;
5294 bfd_vma max_branch_offset
, val
;
5297 unsigned char sym_type
;
5302 case R_PPC_LOCAL24PC
:
5303 case R_PPC_PLTREL24
:
5304 max_branch_offset
= 1 << 25;
5308 case R_PPC_REL14_BRTAKEN
:
5309 case R_PPC_REL14_BRNTAKEN
:
5310 max_branch_offset
= 1 << 15;
5317 /* Get the value of the symbol referred to by the reloc. */
5318 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
5320 /* A local symbol. */
5321 Elf_Internal_Sym
*isym
;
5323 /* Read this BFD's local symbols. */
5324 if (isymbuf
== NULL
)
5326 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5327 if (isymbuf
== NULL
)
5328 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
5329 symtab_hdr
->sh_info
, 0,
5334 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
5335 if (isym
->st_shndx
== SHN_UNDEF
)
5336 continue; /* We can't do anything with undefined symbols. */
5337 else if (isym
->st_shndx
== SHN_ABS
)
5338 tsec
= bfd_abs_section_ptr
;
5339 else if (isym
->st_shndx
== SHN_COMMON
)
5340 tsec
= bfd_com_section_ptr
;
5342 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5344 toff
= isym
->st_value
;
5345 sym_type
= ELF_ST_TYPE (isym
->st_info
);
5349 /* Global symbol handling. */
5351 struct elf_link_hash_entry
*h
;
5353 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
5354 h
= elf_sym_hashes (abfd
)[indx
];
5356 while (h
->root
.type
== bfd_link_hash_indirect
5357 || h
->root
.type
== bfd_link_hash_warning
)
5358 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5362 if (r_type
== R_PPC_PLTREL24
5363 && htab
->plt
!= NULL
)
5365 struct plt_entry
*ent
= find_plt_ent (h
, got2
, irel
->r_addend
);
5369 if (htab
->plt_type
== PLT_NEW
)
5372 toff
= ent
->glink_offset
;
5377 toff
= ent
->plt
.offset
;
5383 else if (h
->root
.type
== bfd_link_hash_defined
5384 || h
->root
.type
== bfd_link_hash_defweak
)
5386 tsec
= h
->root
.u
.def
.section
;
5387 toff
= h
->root
.u
.def
.value
;
5395 /* If the branch and target are in the same section, you have
5396 no hope of adding stubs. We'll error out later should the
5401 /* There probably isn't any reason to handle symbols in
5402 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5403 attribute for a code section, and we are only looking at
5404 branches. However, implement it correctly here as a
5405 reference for other target relax_section functions. */
5406 if (0 && tsec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
5408 /* At this stage in linking, no SEC_MERGE symbol has been
5409 adjusted, so all references to such symbols need to be
5410 passed through _bfd_merged_section_offset. (Later, in
5411 relocate_section, all SEC_MERGE symbols *except* for
5412 section symbols have been adjusted.)
5414 gas may reduce relocations against symbols in SEC_MERGE
5415 sections to a relocation against the section symbol when
5416 the original addend was zero. When the reloc is against
5417 a section symbol we should include the addend in the
5418 offset passed to _bfd_merged_section_offset, since the
5419 location of interest is the original symbol. On the
5420 other hand, an access to "sym+addend" where "sym" is not
5421 a section symbol should not include the addend; Such an
5422 access is presumed to be an offset from "sym"; The
5423 location of interest is just "sym". */
5424 if (sym_type
== STT_SECTION
)
5425 toff
+= irel
->r_addend
;
5427 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
5428 elf_section_data (tsec
)->sec_info
,
5431 if (sym_type
!= STT_SECTION
)
5432 toff
+= irel
->r_addend
;
5434 /* PLTREL24 addends are special. */
5435 else if (r_type
!= R_PPC_PLTREL24
)
5436 toff
+= irel
->r_addend
;
5438 /* Attempted -shared link of non-pic code loses. */
5439 if (tsec
->output_section
== NULL
)
5442 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
5444 roff
= irel
->r_offset
;
5445 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
5447 /* If the branch is in range, no need to do anything. */
5448 if (symaddr
- reladdr
+ max_branch_offset
< 2 * max_branch_offset
)
5451 /* Look for an existing fixup to this address. */
5452 for (f
= fixups
; f
; f
= f
->next
)
5453 if (f
->tsec
== tsec
&& f
->toff
== toff
)
5459 unsigned long stub_rtype
;
5461 val
= trampoff
- roff
;
5462 if (val
>= max_branch_offset
)
5463 /* Oh dear, we can't reach a trampoline. Don't try to add
5464 one. We'll report an error later. */
5467 if (link_info
->shared
)
5469 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
5471 stub_rtype
= R_PPC_RELAX32PC
;
5475 size
= 4 * ARRAY_SIZE (stub_entry
);
5477 stub_rtype
= R_PPC_RELAX32
;
5480 if (R_PPC_RELAX32_PLT
- R_PPC_RELAX32
5481 != R_PPC_RELAX32PC_PLT
- R_PPC_RELAX32PC
)
5483 if (tsec
== htab
->plt
5484 || tsec
== htab
->glink
)
5485 stub_rtype
+= R_PPC_RELAX32_PLT
- R_PPC_RELAX32
;
5487 /* Hijack the old relocation. Since we need two
5488 relocations for this use a "composite" reloc. */
5489 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
5491 irel
->r_offset
= trampoff
+ insn_offset
;
5493 /* Record the fixup so we don't do it again this section. */
5494 f
= bfd_malloc (sizeof (*f
));
5498 f
->trampoff
= trampoff
;
5505 val
= f
->trampoff
- roff
;
5506 if (val
>= max_branch_offset
)
5509 /* Nop out the reloc, since we're finalizing things here. */
5510 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
5513 /* Get the section contents. */
5514 if (contents
== NULL
)
5516 /* Get cached copy if it exists. */
5517 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
5518 contents
= elf_section_data (isec
)->this_hdr
.contents
;
5521 /* Go get them off disk. */
5522 if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
5527 /* Fix up the existing branch to hit the trampoline. */
5528 hit_addr
= contents
+ roff
;
5532 case R_PPC_LOCAL24PC
:
5533 case R_PPC_PLTREL24
:
5534 t0
= bfd_get_32 (abfd
, hit_addr
);
5536 t0
|= val
& 0x3fffffc;
5537 bfd_put_32 (abfd
, t0
, hit_addr
);
5541 case R_PPC_REL14_BRTAKEN
:
5542 case R_PPC_REL14_BRNTAKEN
:
5543 t0
= bfd_get_32 (abfd
, hit_addr
);
5546 bfd_put_32 (abfd
, t0
, hit_addr
);
5551 /* Write out the trampolines. */
5552 changed
= fixups
!= NULL
;
5562 struct one_fixup
*f
= fixups
;
5563 fixups
= fixups
->next
;
5568 contents
= bfd_realloc_or_free (contents
, trampoff
);
5569 if (contents
== NULL
)
5572 isec
->size
= (isec
->size
+ 3) & (bfd_vma
) -4;
5573 /* Branch around the trampolines. */
5574 val
= trampoff
- isec
->size
+ 0x48000000;
5575 dest
= contents
+ isec
->size
;
5576 isec
->size
= trampoff
;
5577 bfd_put_32 (abfd
, val
, dest
);
5580 if (link_info
->shared
)
5582 stub
= shared_stub_entry
;
5583 size
= ARRAY_SIZE (shared_stub_entry
);
5588 size
= ARRAY_SIZE (stub_entry
);
5592 while (dest
< contents
+ trampoff
)
5594 bfd_put_32 (abfd
, stub
[i
], dest
);
5600 BFD_ASSERT (i
== 0);
5604 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5606 if (! link_info
->keep_memory
)
5610 /* Cache the symbols for elf_link_input_bfd. */
5611 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
5615 if (contents
!= NULL
5616 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
5618 if (!changed
&& !link_info
->keep_memory
)
5622 /* Cache the section contents for elf_link_input_bfd. */
5623 elf_section_data (isec
)->this_hdr
.contents
= contents
;
5627 if (elf_section_data (isec
)->relocs
!= internal_relocs
)
5630 free (internal_relocs
);
5632 elf_section_data (isec
)->relocs
= internal_relocs
;
5639 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
5641 if (contents
!= NULL
5642 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
5644 if (internal_relocs
!= NULL
5645 && elf_section_data (isec
)->relocs
!= internal_relocs
)
5646 free (internal_relocs
);
5650 /* What to do when ld finds relocations against symbols defined in
5651 discarded sections. */
5654 ppc_elf_action_discarded (asection
*sec
)
5656 if (strcmp (".fixup", sec
->name
) == 0)
5659 if (strcmp (".got2", sec
->name
) == 0)
5662 return _bfd_elf_default_action_discarded (sec
);
5665 /* Fill in the address for a pointer generated in a linker section. */
5668 elf_finish_pointer_linker_section (bfd
*input_bfd
,
5669 elf_linker_section_t
*lsect
,
5670 struct elf_link_hash_entry
*h
,
5672 const Elf_Internal_Rela
*rel
)
5674 elf_linker_section_pointers_t
*linker_section_ptr
;
5676 BFD_ASSERT (lsect
!= NULL
);
5680 /* Handle global symbol. */
5681 struct ppc_elf_link_hash_entry
*eh
;
5683 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5684 BFD_ASSERT (eh
->elf
.def_regular
);
5685 linker_section_ptr
= eh
->linker_section_pointer
;
5689 /* Handle local symbol. */
5690 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
5692 BFD_ASSERT (is_ppc_elf (input_bfd
));
5693 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
5694 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
5697 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
5700 BFD_ASSERT (linker_section_ptr
!= NULL
);
5702 /* Offset will always be a multiple of four, so use the bottom bit
5703 as a "written" flag. */
5704 if ((linker_section_ptr
->offset
& 1) == 0)
5706 bfd_put_32 (lsect
->section
->owner
,
5707 relocation
+ linker_section_ptr
->addend
,
5708 lsect
->section
->contents
+ linker_section_ptr
->offset
);
5709 linker_section_ptr
->offset
+= 1;
5712 relocation
= (lsect
->section
->output_offset
5713 + linker_section_ptr
->offset
- 1
5718 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5719 lsect
->name
, (long) relocation
, (long) relocation
);
5722 /* Subtract out the addend, because it will get added back in by the normal
5724 return relocation
- linker_section_ptr
->addend
;
5727 /* The RELOCATE_SECTION function is called by the ELF backend linker
5728 to handle the relocations for a section.
5730 The relocs are always passed as Rela structures; if the section
5731 actually uses Rel structures, the r_addend field will always be
5734 This function is responsible for adjust the section contents as
5735 necessary, and (if using Rela relocs and generating a
5736 relocatable output file) adjusting the reloc addend as
5739 This function does not have to worry about setting the reloc
5740 address or the reloc symbol index.
5742 LOCAL_SYMS is a pointer to the swapped in local symbols.
5744 LOCAL_SECTIONS is an array giving the section in the input file
5745 corresponding to the st_shndx field of each local symbol.
5747 The global hash table entry for the global symbols can be found
5748 via elf_sym_hashes (input_bfd).
5750 When generating relocatable output, this function must handle
5751 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5752 going to be the section symbol corresponding to the output
5753 section, which means that the addend must be adjusted
5757 ppc_elf_relocate_section (bfd
*output_bfd
,
5758 struct bfd_link_info
*info
,
5760 asection
*input_section
,
5762 Elf_Internal_Rela
*relocs
,
5763 Elf_Internal_Sym
*local_syms
,
5764 asection
**local_sections
)
5766 Elf_Internal_Shdr
*symtab_hdr
;
5767 struct elf_link_hash_entry
**sym_hashes
;
5768 struct ppc_elf_link_hash_table
*htab
;
5769 Elf_Internal_Rela
*rel
;
5770 Elf_Internal_Rela
*relend
;
5771 Elf_Internal_Rela outrel
;
5773 asection
*got2
, *sreloc
= NULL
;
5774 bfd_vma
*local_got_offsets
;
5775 bfd_boolean ret
= TRUE
;
5776 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
5779 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5780 "%ld relocations%s",
5781 input_bfd
, input_section
,
5782 (long) input_section
->reloc_count
,
5783 (info
->relocatable
) ? " (relocatable)" : "");
5786 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
5788 /* Initialize howto table if not already done. */
5789 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
5790 ppc_elf_howto_init ();
5792 htab
= ppc_elf_hash_table (info
);
5793 local_got_offsets
= elf_local_got_offsets (input_bfd
);
5794 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
5795 sym_hashes
= elf_sym_hashes (input_bfd
);
5797 relend
= relocs
+ input_section
->reloc_count
;
5798 for (; rel
< relend
; rel
++)
5800 enum elf_ppc_reloc_type r_type
;
5802 bfd_reloc_status_type r
;
5803 Elf_Internal_Sym
*sym
;
5805 struct elf_link_hash_entry
*h
;
5806 const char *sym_name
;
5807 reloc_howto_type
*howto
;
5808 unsigned long r_symndx
;
5810 bfd_vma branch_bit
, insn
, from
;
5811 bfd_boolean unresolved_reloc
;
5813 unsigned int tls_type
, tls_mask
, tls_gd
;
5815 r_type
= ELF32_R_TYPE (rel
->r_info
);
5819 unresolved_reloc
= FALSE
;
5821 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5823 if (r_symndx
< symtab_hdr
->sh_info
)
5825 sym
= local_syms
+ r_symndx
;
5826 sec
= local_sections
[r_symndx
];
5827 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
5829 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
5833 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
5834 r_symndx
, symtab_hdr
, sym_hashes
,
5836 unresolved_reloc
, warned
);
5838 sym_name
= h
->root
.root
.string
;
5841 if (sec
!= NULL
&& elf_discarded_section (sec
))
5843 /* For relocs against symbols from removed linkonce sections,
5844 or sections discarded by a linker script, we just want the
5845 section contents zeroed. Avoid any special processing. */
5847 if (r_type
< R_PPC_max
)
5848 howto
= ppc_elf_howto_table
[r_type
];
5849 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
5855 if (info
->relocatable
)
5858 && r_type
== R_PPC_PLTREL24
5859 && rel
->r_addend
>= 32768)
5861 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5862 addend specifies the GOT pointer offset within .got2. */
5863 rel
->r_addend
+= got2
->output_offset
;
5868 /* TLS optimizations. Replace instruction sequences and relocs
5869 based on information we collected in tls_optimize. We edit
5870 RELOCS so that --emit-relocs will output something sensible
5871 for the final instruction stream. */
5874 if (IS_PPC_TLS_RELOC (r_type
))
5877 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
5878 else if (local_got_offsets
!= NULL
)
5881 lgot_masks
= (char *) (local_got_offsets
+ symtab_hdr
->sh_info
);
5882 tls_mask
= lgot_masks
[r_symndx
];
5886 /* Ensure reloc mapping code below stays sane. */
5887 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
5888 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
5889 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
5890 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
5891 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
5892 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
5893 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
5894 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
5901 case R_PPC_GOT_TPREL16
:
5902 case R_PPC_GOT_TPREL16_LO
:
5904 && (tls_mask
& TLS_TPREL
) == 0)
5907 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
5909 insn
|= 0x3c020000; /* addis 0,2,0 */
5910 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
5911 r_type
= R_PPC_TPREL16_HA
;
5912 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5918 && (tls_mask
& TLS_TPREL
) == 0)
5921 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
5922 if ((insn
& ((31 << 26) | (31 << 11)))
5923 == ((31 << 26) | (2 << 11)))
5924 rtra
= insn
& ((1 << 26) - (1 << 16));
5925 else if ((insn
& ((31 << 26) | (31 << 16)))
5926 == ((31 << 26) | (2 << 16)))
5927 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
5930 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
5933 else if ((insn
& (31 << 1)) == 23 << 1
5934 && ((insn
& (31 << 6)) < 14 << 6
5935 || ((insn
& (31 << 6)) >= 16 << 6
5936 && (insn
& (31 << 6)) < 24 << 6)))
5937 /* load and store indexed -> dform. */
5938 insn
= (32 | ((insn
>> 6) & 31)) << 26;
5939 else if ((insn
& (31 << 1)) == 21 << 1
5940 && (insn
& (0x1a << 6)) == 0)
5941 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5942 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
5943 | ((insn
>> 6) & 1));
5944 else if ((insn
& (31 << 1)) == 21 << 1
5945 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
5947 insn
= (58 << 26) | 2;
5951 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
5952 r_type
= R_PPC_TPREL16_LO
;
5953 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5955 /* Was PPC_TLS which sits on insn boundary, now
5956 PPC_TPREL16_LO which is at low-order half-word. */
5957 rel
->r_offset
+= d_offset
;
5961 case R_PPC_GOT_TLSGD16_HI
:
5962 case R_PPC_GOT_TLSGD16_HA
:
5963 tls_gd
= TLS_TPRELGD
;
5964 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
5968 case R_PPC_GOT_TLSLD16_HI
:
5969 case R_PPC_GOT_TLSLD16_HA
:
5970 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
5973 if ((tls_mask
& tls_gd
) != 0)
5974 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
5975 + R_PPC_GOT_TPREL16
);
5978 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
5979 rel
->r_offset
-= d_offset
;
5980 r_type
= R_PPC_NONE
;
5982 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5986 case R_PPC_GOT_TLSGD16
:
5987 case R_PPC_GOT_TLSGD16_LO
:
5988 tls_gd
= TLS_TPRELGD
;
5989 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
5993 case R_PPC_GOT_TLSLD16
:
5994 case R_PPC_GOT_TLSLD16_LO
:
5995 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
5997 bfd_vma insn1
, insn2
;
6001 offset
= rel
[1].r_offset
;
6002 insn1
= bfd_get_32 (output_bfd
,
6003 contents
+ rel
->r_offset
- d_offset
);
6004 if ((tls_mask
& tls_gd
) != 0)
6007 insn1
&= (1 << 26) - 1;
6008 insn1
|= 32 << 26; /* lwz */
6009 insn2
= 0x7c631214; /* add 3,3,2 */
6011 = ELF32_R_INFO (ELF32_R_SYM (rel
[1].r_info
), R_PPC_NONE
);
6012 rel
[1].r_addend
= 0;
6013 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
6014 + R_PPC_GOT_TPREL16
);
6015 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6020 insn1
= 0x3c620000; /* addis 3,2,0 */
6021 insn2
= 0x38630000; /* addi 3,3,0 */
6024 /* Was an LD reloc. */
6026 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6028 r_type
= R_PPC_TPREL16_HA
;
6029 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
6030 rel
[1].r_info
= ELF32_R_INFO (r_symndx
,
6032 rel
[1].r_offset
+= d_offset
;
6033 rel
[1].r_addend
= rel
->r_addend
;
6035 bfd_put_32 (output_bfd
, insn1
,
6036 contents
+ rel
->r_offset
- d_offset
);
6037 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
6040 /* We changed the symbol on an LD reloc. Start over
6041 in order to get h, sym, sec etc. right. */
6049 /* Handle other relocations that tweak non-addend part of insn. */
6056 /* Branch taken prediction relocations. */
6057 case R_PPC_ADDR14_BRTAKEN
:
6058 case R_PPC_REL14_BRTAKEN
:
6059 branch_bit
= BRANCH_PREDICT_BIT
;
6062 /* Branch not taken prediction relocations. */
6063 case R_PPC_ADDR14_BRNTAKEN
:
6064 case R_PPC_REL14_BRNTAKEN
:
6065 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6066 insn
&= ~BRANCH_PREDICT_BIT
;
6069 from
= (rel
->r_offset
6070 + input_section
->output_offset
6071 + input_section
->output_section
->vma
);
6073 /* Invert 'y' bit if not the default. */
6074 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
6075 insn
^= BRANCH_PREDICT_BIT
;
6077 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6081 addend
= rel
->r_addend
;
6084 if (r_type
< R_PPC_max
)
6085 howto
= ppc_elf_howto_table
[r_type
];
6089 (*_bfd_error_handler
)
6090 (_("%B: unknown relocation type %d for symbol %s"),
6091 input_bfd
, (int) r_type
, sym_name
);
6093 bfd_set_error (bfd_error_bad_value
);
6099 case R_PPC_EMB_MRKREF
:
6100 case R_PPC_GNU_VTINHERIT
:
6101 case R_PPC_GNU_VTENTRY
:
6104 /* GOT16 relocations. Like an ADDR16 using the symbol's
6105 address in the GOT as relocation value instead of the
6106 symbol's value itself. Also, create a GOT entry for the
6107 symbol and put the symbol value there. */
6108 case R_PPC_GOT_TLSGD16
:
6109 case R_PPC_GOT_TLSGD16_LO
:
6110 case R_PPC_GOT_TLSGD16_HI
:
6111 case R_PPC_GOT_TLSGD16_HA
:
6112 tls_type
= TLS_TLS
| TLS_GD
;
6115 case R_PPC_GOT_TLSLD16
:
6116 case R_PPC_GOT_TLSLD16_LO
:
6117 case R_PPC_GOT_TLSLD16_HI
:
6118 case R_PPC_GOT_TLSLD16_HA
:
6119 tls_type
= TLS_TLS
| TLS_LD
;
6122 case R_PPC_GOT_TPREL16
:
6123 case R_PPC_GOT_TPREL16_LO
:
6124 case R_PPC_GOT_TPREL16_HI
:
6125 case R_PPC_GOT_TPREL16_HA
:
6126 tls_type
= TLS_TLS
| TLS_TPREL
;
6129 case R_PPC_GOT_DTPREL16
:
6130 case R_PPC_GOT_DTPREL16_LO
:
6131 case R_PPC_GOT_DTPREL16_HI
:
6132 case R_PPC_GOT_DTPREL16_HA
:
6133 tls_type
= TLS_TLS
| TLS_DTPREL
;
6137 case R_PPC_GOT16_LO
:
6138 case R_PPC_GOT16_HI
:
6139 case R_PPC_GOT16_HA
:
6142 /* Relocation is to the entry for this symbol in the global
6148 if (htab
->got
== NULL
)
6152 if (tls_type
== (TLS_TLS
| TLS_LD
)
6154 || !h
->def_dynamic
))
6155 offp
= &htab
->tlsld_got
.offset
;
6159 dyn
= htab
->elf
.dynamic_sections_created
;
6160 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
6162 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
6163 /* This is actually a static link, or it is a
6164 -Bsymbolic link and the symbol is defined
6165 locally, or the symbol was forced to be local
6166 because of a version file. */
6171 unresolved_reloc
= FALSE
;
6173 offp
= &h
->got
.offset
;
6177 if (local_got_offsets
== NULL
)
6179 offp
= &local_got_offsets
[r_symndx
];
6182 /* The offset must always be a multiple of 4. We use the
6183 least significant bit to record whether we have already
6184 processed this entry. */
6190 unsigned int tls_m
= (tls_mask
6191 & (TLS_LD
| TLS_GD
| TLS_DTPREL
6192 | TLS_TPREL
| TLS_TPRELGD
));
6194 if (offp
== &htab
->tlsld_got
.offset
)
6200 /* We might have multiple got entries for this sym.
6201 Initialize them all. */
6206 if ((tls_m
& TLS_LD
) != 0)
6208 tls_ty
= TLS_TLS
| TLS_LD
;
6211 else if ((tls_m
& TLS_GD
) != 0)
6213 tls_ty
= TLS_TLS
| TLS_GD
;
6216 else if ((tls_m
& TLS_DTPREL
) != 0)
6218 tls_ty
= TLS_TLS
| TLS_DTPREL
;
6219 tls_m
&= ~TLS_DTPREL
;
6221 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6223 tls_ty
= TLS_TLS
| TLS_TPREL
;
6227 /* Generate relocs for the dynamic linker. */
6228 if ((info
->shared
|| indx
!= 0)
6230 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6231 || h
->root
.type
!= bfd_link_hash_undefweak
))
6233 outrel
.r_offset
= (htab
->got
->output_section
->vma
6234 + htab
->got
->output_offset
6236 outrel
.r_addend
= 0;
6237 if (tls_ty
& (TLS_LD
| TLS_GD
))
6239 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
6240 if (tls_ty
== (TLS_TLS
| TLS_GD
))
6242 loc
= htab
->relgot
->contents
;
6243 loc
+= (htab
->relgot
->reloc_count
++
6244 * sizeof (Elf32_External_Rela
));
6245 bfd_elf32_swap_reloca_out (output_bfd
,
6247 outrel
.r_offset
+= 4;
6249 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
6252 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
6253 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
6254 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
6255 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
6257 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_RELATIVE
);
6259 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
6262 outrel
.r_addend
+= relocation
;
6263 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
6264 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
6266 loc
= htab
->relgot
->contents
;
6267 loc
+= (htab
->relgot
->reloc_count
++
6268 * sizeof (Elf32_External_Rela
));
6269 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
6272 /* Init the .got section contents if we're not
6273 emitting a reloc. */
6276 bfd_vma value
= relocation
;
6278 if (tls_ty
== (TLS_TLS
| TLS_LD
))
6280 else if (tls_ty
!= 0)
6282 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6283 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
6284 value
+= DTP_OFFSET
- TP_OFFSET
;
6286 if (tls_ty
== (TLS_TLS
| TLS_GD
))
6288 bfd_put_32 (output_bfd
, value
,
6289 htab
->got
->contents
+ off
+ 4);
6293 bfd_put_32 (output_bfd
, value
,
6294 htab
->got
->contents
+ off
);
6298 if (tls_ty
& (TLS_LD
| TLS_GD
))
6307 if (off
>= (bfd_vma
) -2)
6310 if ((tls_type
& TLS_TLS
) != 0)
6312 if (tls_type
!= (TLS_TLS
| TLS_LD
))
6314 if ((tls_mask
& TLS_LD
) != 0
6316 || !h
->def_dynamic
))
6318 if (tls_type
!= (TLS_TLS
| TLS_GD
))
6320 if ((tls_mask
& TLS_GD
) != 0)
6322 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
6324 if ((tls_mask
& TLS_DTPREL
) != 0)
6331 relocation
= htab
->got
->output_offset
+ off
;
6332 relocation
-= htab
->elf
.hgot
->root
.u
.def
.value
;
6334 /* Addends on got relocations don't make much sense.
6335 x+off@got is actually x@got+off, and since the got is
6336 generated by a hash table traversal, the value in the
6337 got at entry m+n bears little relation to the entry m. */
6339 (*_bfd_error_handler
)
6340 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6343 (long) rel
->r_offset
,
6349 /* Relocations that need no special processing. */
6350 case R_PPC_LOCAL24PC
:
6351 /* It makes no sense to point a local relocation
6352 at a symbol not in this object. */
6353 if (unresolved_reloc
)
6355 if (! (*info
->callbacks
->undefined_symbol
) (info
,
6356 h
->root
.root
.string
,
6366 case R_PPC_DTPREL16
:
6367 case R_PPC_DTPREL16_LO
:
6368 case R_PPC_DTPREL16_HI
:
6369 case R_PPC_DTPREL16_HA
:
6370 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6373 /* Relocations that may need to be propagated if this is a shared
6376 case R_PPC_TPREL16_LO
:
6377 case R_PPC_TPREL16_HI
:
6378 case R_PPC_TPREL16_HA
:
6379 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
6380 /* The TPREL16 relocs shouldn't really be used in shared
6381 libs as they will result in DT_TEXTREL being set, but
6382 support them anyway. */
6386 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
6389 case R_PPC_DTPREL32
:
6390 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6393 case R_PPC_DTPMOD32
:
6399 case R_PPC_REL16_LO
:
6400 case R_PPC_REL16_HI
:
6401 case R_PPC_REL16_HA
:
6407 case R_PPC_REL14_BRTAKEN
:
6408 case R_PPC_REL14_BRNTAKEN
:
6409 /* If these relocations are not to a named symbol, they can be
6410 handled right here, no need to bother the dynamic linker. */
6411 if (SYMBOL_REFERENCES_LOCAL (info
, h
)
6412 || h
== htab
->elf
.hgot
)
6416 /* Relocations that always need to be propagated if this is a shared
6421 case R_PPC_ADDR16_LO
:
6422 case R_PPC_ADDR16_HI
:
6423 case R_PPC_ADDR16_HA
:
6425 case R_PPC_ADDR14_BRTAKEN
:
6426 case R_PPC_ADDR14_BRNTAKEN
:
6430 if ((input_section
->flags
& SEC_ALLOC
) == 0)
6436 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6437 || h
->root
.type
!= bfd_link_hash_undefweak
)
6438 && (MUST_BE_DYN_RELOC (r_type
)
6439 || !SYMBOL_CALLS_LOCAL (info
, h
)))
6440 || (ELIMINATE_COPY_RELOCS
6446 && !h
->def_regular
))
6451 fprintf (stderr
, "ppc_elf_relocate_section needs to "
6452 "create relocation for %s\n",
6453 (h
&& h
->root
.root
.string
6454 ? h
->root
.root
.string
: "<unknown>"));
6457 /* When generating a shared object, these relocations
6458 are copied into the output file to be resolved at run
6464 name
= (bfd_elf_string_from_elf_section
6466 elf_elfheader (input_bfd
)->e_shstrndx
,
6467 elf_section_data (input_section
)->rel_hdr
.sh_name
));
6471 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
6472 && strcmp (bfd_get_section_name (input_bfd
,
6476 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
6477 BFD_ASSERT (sreloc
!= NULL
);
6483 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
6485 if (outrel
.r_offset
== (bfd_vma
) -1
6486 || outrel
.r_offset
== (bfd_vma
) -2)
6487 skip
= (int) outrel
.r_offset
;
6488 outrel
.r_offset
+= (input_section
->output_section
->vma
6489 + input_section
->output_offset
);
6492 memset (&outrel
, 0, sizeof outrel
);
6493 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
6495 unresolved_reloc
= FALSE
;
6496 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
6497 outrel
.r_addend
= rel
->r_addend
;
6501 outrel
.r_addend
= relocation
+ rel
->r_addend
;
6503 if (r_type
== R_PPC_ADDR32
)
6504 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
6509 if (bfd_is_abs_section (sec
))
6511 else if (sec
== NULL
|| sec
->owner
== NULL
)
6513 bfd_set_error (bfd_error_bad_value
);
6520 /* We are turning this relocation into one
6521 against a section symbol. It would be
6522 proper to subtract the symbol's value,
6523 osec->vma, from the emitted reloc addend,
6524 but ld.so expects buggy relocs. */
6525 osec
= sec
->output_section
;
6526 indx
= elf_section_data (osec
)->dynindx
;
6529 osec
= htab
->elf
.text_index_section
;
6530 indx
= elf_section_data (osec
)->dynindx
;
6532 BFD_ASSERT (indx
!= 0);
6535 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6536 indx
, osec
->name
, osec
->flags
,
6537 h
->root
.root
.string
);
6541 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
6545 loc
= sreloc
->contents
;
6546 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6547 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
6552 /* This reloc will be computed at runtime. We clear the memory
6553 so that it contains predictable value. */
6555 && ((input_section
->flags
& SEC_ALLOC
) != 0
6556 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
6558 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
6565 case R_PPC_RELAX32PC_PLT
:
6566 case R_PPC_RELAX32_PLT
:
6568 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
6570 if (htab
->plt_type
== PLT_NEW
)
6571 relocation
= (htab
->glink
->output_section
->vma
6572 + htab
->glink
->output_offset
6573 + ent
->glink_offset
);
6575 relocation
= (htab
->plt
->output_section
->vma
6576 + htab
->plt
->output_offset
6580 if (r_type
== R_PPC_RELAX32_PLT
)
6584 case R_PPC_RELAX32PC
:
6585 relocation
-= (input_section
->output_section
->vma
6586 + input_section
->output_offset
6587 + rel
->r_offset
- 4);
6596 t0
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6597 t1
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
+ 4);
6599 /* We're clearing the bits for R_PPC_ADDR16_HA
6600 and R_PPC_ADDR16_LO here. */
6604 /* t0 is HA, t1 is LO */
6605 relocation
+= addend
;
6606 t0
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
6607 t1
|= relocation
& 0xffff;
6609 bfd_put_32 (output_bfd
, t0
, contents
+ rel
->r_offset
);
6610 bfd_put_32 (output_bfd
, t1
, contents
+ rel
->r_offset
+ 4);
6614 /* Indirect .sdata relocation. */
6615 case R_PPC_EMB_SDAI16
:
6616 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
6618 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
6619 h
, relocation
, rel
);
6622 /* Indirect .sdata2 relocation. */
6623 case R_PPC_EMB_SDA2I16
:
6624 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
6626 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
6627 h
, relocation
, rel
);
6630 /* Handle the TOC16 reloc. We want to use the offset within the .got
6631 section, not the actual VMA. This is appropriate when generating
6632 an embedded ELF object, for which the .got section acts like the
6633 AIX .toc section. */
6634 case R_PPC_TOC16
: /* phony GOT16 relocations */
6635 BFD_ASSERT (sec
!= NULL
);
6636 BFD_ASSERT (bfd_is_und_section (sec
)
6637 || strcmp (bfd_get_section_name (abfd
, sec
), ".got") == 0
6638 || strcmp (bfd_get_section_name (abfd
, sec
), ".cgot") == 0);
6640 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
6643 case R_PPC_PLTREL24
:
6644 /* Relocation is to the entry for this symbol in the
6645 procedure linkage table. */
6647 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
6651 || htab
->plt
== NULL
)
6653 /* We didn't make a PLT entry for this symbol. This
6654 happens when statically linking PIC code, or when
6655 using -Bsymbolic. */
6659 unresolved_reloc
= FALSE
;
6660 if (htab
->plt_type
== PLT_NEW
)
6661 relocation
= (htab
->glink
->output_section
->vma
6662 + htab
->glink
->output_offset
6663 + ent
->glink_offset
);
6665 relocation
= (htab
->plt
->output_section
->vma
6666 + htab
->plt
->output_offset
6671 /* Relocate against _SDA_BASE_. */
6672 case R_PPC_SDAREL16
:
6675 struct elf_link_hash_entry
*sh
;
6677 BFD_ASSERT (sec
!= NULL
);
6678 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6679 if (! ((CONST_STRNEQ (name
, ".sdata")
6680 && (name
[6] == 0 || name
[6] == '.'))
6681 || (CONST_STRNEQ (name
, ".sbss")
6682 && (name
[5] == 0 || name
[5] == '.'))))
6684 (*_bfd_error_handler
)
6685 (_("%B: the target (%s) of a %s relocation is "
6686 "in the wrong output section (%s)"),
6692 sh
= htab
->sdata
[0].sym
;
6693 addend
-= (sh
->root
.u
.def
.value
6694 + sh
->root
.u
.def
.section
->output_offset
6695 + sh
->root
.u
.def
.section
->output_section
->vma
);
6699 /* Relocate against _SDA2_BASE_. */
6700 case R_PPC_EMB_SDA2REL
:
6703 struct elf_link_hash_entry
*sh
;
6705 BFD_ASSERT (sec
!= NULL
);
6706 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6707 if (! (CONST_STRNEQ (name
, ".sdata2")
6708 || CONST_STRNEQ (name
, ".sbss2")))
6710 (*_bfd_error_handler
)
6711 (_("%B: the target (%s) of a %s relocation is "
6712 "in the wrong output section (%s)"),
6718 bfd_set_error (bfd_error_bad_value
);
6722 sh
= htab
->sdata
[1].sym
;
6723 addend
-= (sh
->root
.u
.def
.value
6724 + sh
->root
.u
.def
.section
->output_offset
6725 + sh
->root
.u
.def
.section
->output_section
->vma
);
6729 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6730 case R_PPC_EMB_SDA21
:
6731 case R_PPC_EMB_RELSDA
:
6735 struct elf_link_hash_entry
*sh
;
6737 BFD_ASSERT (sec
!= NULL
);
6738 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6739 if (((CONST_STRNEQ (name
, ".sdata")
6740 && (name
[6] == 0 || name
[6] == '.'))
6741 || (CONST_STRNEQ (name
, ".sbss")
6742 && (name
[5] == 0 || name
[5] == '.'))))
6745 sh
= htab
->sdata
[0].sym
;
6746 addend
-= (sh
->root
.u
.def
.value
6747 + sh
->root
.u
.def
.section
->output_offset
6748 + sh
->root
.u
.def
.section
->output_section
->vma
);
6751 else if (CONST_STRNEQ (name
, ".sdata2")
6752 || CONST_STRNEQ (name
, ".sbss2"))
6755 sh
= htab
->sdata
[1].sym
;
6756 addend
-= (sh
->root
.u
.def
.value
6757 + sh
->root
.u
.def
.section
->output_offset
6758 + sh
->root
.u
.def
.section
->output_section
->vma
);
6761 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
6762 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
6769 (*_bfd_error_handler
)
6770 (_("%B: the target (%s) of a %s relocation is "
6771 "in the wrong output section (%s)"),
6777 bfd_set_error (bfd_error_bad_value
);
6782 if (r_type
== R_PPC_EMB_SDA21
)
6783 { /* fill in register field */
6784 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6785 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
6786 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6791 /* Relocate against the beginning of the section. */
6793 case R_PPC_SECTOFF_LO
:
6794 case R_PPC_SECTOFF_HI
:
6795 case R_PPC_SECTOFF_HA
:
6796 BFD_ASSERT (sec
!= NULL
);
6797 addend
-= sec
->output_section
->vma
;
6800 /* Negative relocations. */
6801 case R_PPC_EMB_NADDR32
:
6802 case R_PPC_EMB_NADDR16
:
6803 case R_PPC_EMB_NADDR16_LO
:
6804 case R_PPC_EMB_NADDR16_HI
:
6805 case R_PPC_EMB_NADDR16_HA
:
6806 addend
-= 2 * relocation
;
6810 case R_PPC_GLOB_DAT
:
6811 case R_PPC_JMP_SLOT
:
6812 case R_PPC_RELATIVE
:
6814 case R_PPC_PLTREL32
:
6815 case R_PPC_PLT16_LO
:
6816 case R_PPC_PLT16_HI
:
6817 case R_PPC_PLT16_HA
:
6819 case R_PPC_EMB_RELSEC16
:
6820 case R_PPC_EMB_RELST_LO
:
6821 case R_PPC_EMB_RELST_HI
:
6822 case R_PPC_EMB_RELST_HA
:
6823 case R_PPC_EMB_BIT_FLD
:
6824 (*_bfd_error_handler
)
6825 (_("%B: relocation %s is not yet supported for symbol %s."),
6830 bfd_set_error (bfd_error_invalid_operation
);
6835 /* Do any further special processing. */
6841 case R_PPC_ADDR16_HA
:
6842 case R_PPC_REL16_HA
:
6843 case R_PPC_SECTOFF_HA
:
6844 case R_PPC_TPREL16_HA
:
6845 case R_PPC_DTPREL16_HA
:
6846 case R_PPC_EMB_NADDR16_HA
:
6847 case R_PPC_EMB_RELST_HA
:
6848 /* It's just possible that this symbol is a weak symbol
6849 that's not actually defined anywhere. In that case,
6850 'sec' would be NULL, and we should leave the symbol
6851 alone (it will be set to zero elsewhere in the link). */
6856 case R_PPC_PLT16_HA
:
6857 case R_PPC_GOT16_HA
:
6858 case R_PPC_GOT_TLSGD16_HA
:
6859 case R_PPC_GOT_TLSLD16_HA
:
6860 case R_PPC_GOT_TPREL16_HA
:
6861 case R_PPC_GOT_DTPREL16_HA
:
6862 /* Add 0x10000 if sign bit in 0:15 is set.
6863 Bits 0:15 are not used. */
6869 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6870 "offset = %ld, addend = %ld\n",
6875 (long) rel
->r_offset
,
6879 if (unresolved_reloc
6880 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
6883 (*_bfd_error_handler
)
6884 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6887 (long) rel
->r_offset
,
6893 r
= _bfd_final_link_relocate (howto
,
6901 if (r
!= bfd_reloc_ok
)
6903 if (r
== bfd_reloc_overflow
)
6908 && h
->root
.type
== bfd_link_hash_undefweak
6909 && howto
->pc_relative
)
6911 /* Assume this is a call protected by other code that
6912 detect the symbol is undefined. If this is the case,
6913 we can safely ignore the overflow. If not, the
6914 program is hosed anyway, and a little warning isn't
6920 if (! (*info
->callbacks
->reloc_overflow
) (info
,
6921 (h
? &h
->root
: NULL
),
6932 (*_bfd_error_handler
)
6933 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6934 input_bfd
, input_section
,
6935 (long) rel
->r_offset
, howto
->name
, sym_name
, (int) r
);
6942 fprintf (stderr
, "\n");
6948 #define PPC_LO(v) ((v) & 0xffff)
6949 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6950 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6952 /* Finish up dynamic symbol handling. We set the contents of various
6953 dynamic sections here. */
6956 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
6957 struct bfd_link_info
*info
,
6958 struct elf_link_hash_entry
*h
,
6959 Elf_Internal_Sym
*sym
)
6961 struct ppc_elf_link_hash_table
*htab
;
6962 struct plt_entry
*ent
;
6963 bfd_boolean doneone
;
6966 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
6967 h
->root
.root
.string
);
6970 htab
= ppc_elf_hash_table (info
);
6971 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6974 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6975 if (ent
->plt
.offset
!= (bfd_vma
) -1)
6979 Elf_Internal_Rela rela
;
6981 bfd_vma reloc_index
;
6983 if (htab
->plt_type
== PLT_NEW
)
6984 reloc_index
= ent
->plt
.offset
/ 4;
6987 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
6988 / htab
->plt_slot_size
);
6989 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
6990 && htab
->plt_type
== PLT_OLD
)
6991 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
6994 /* This symbol has an entry in the procedure linkage table.
6996 if (htab
->plt_type
== PLT_VXWORKS
)
6999 const bfd_vma
*plt_entry
;
7001 /* The first three entries in .got.plt are reserved. */
7002 got_offset
= (reloc_index
+ 3) * 4;
7004 /* Use the right PLT. */
7005 plt_entry
= info
->shared
? ppc_elf_vxworks_pic_plt_entry
7006 : ppc_elf_vxworks_plt_entry
;
7008 /* Fill in the .plt on VxWorks. */
7011 bfd_vma got_offset_hi
= (got_offset
>> 16)
7012 + ((got_offset
& 0x8000) >> 15);
7014 bfd_put_32 (output_bfd
,
7015 plt_entry
[0] | (got_offset_hi
& 0xffff),
7016 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
7017 bfd_put_32 (output_bfd
,
7018 plt_entry
[1] | (got_offset
& 0xffff),
7019 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
7025 + htab
->elf
.hgot
->root
.u
.def
.value
7026 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
7027 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
);
7028 bfd_vma got_loc_hi
= (got_loc
>> 16)
7029 + ((got_loc
& 0x8000) >> 15);
7031 bfd_put_32 (output_bfd
,
7032 plt_entry
[0] | (got_loc_hi
& 0xffff),
7033 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
7034 bfd_put_32 (output_bfd
,
7035 plt_entry
[1] | (got_loc
& 0xffff),
7036 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
7039 bfd_put_32 (output_bfd
, plt_entry
[2],
7040 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
7041 bfd_put_32 (output_bfd
, plt_entry
[3],
7042 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
7044 /* This instruction is an immediate load. The value loaded is
7045 the byte offset of the R_PPC_JMP_SLOT relocation from the
7046 start of the .rela.plt section. The value is stored in the
7047 low-order 16 bits of the load instruction. */
7048 /* NOTE: It appears that this is now an index rather than a
7049 prescaled offset. */
7050 bfd_put_32 (output_bfd
,
7051 plt_entry
[4] | reloc_index
,
7052 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
7053 /* This instruction is a PC-relative branch whose target is
7054 the start of the PLT section. The address of this branch
7055 instruction is 20 bytes beyond the start of this PLT entry.
7056 The address is encoded in bits 6-29, inclusive. The value
7057 stored is right-shifted by two bits, permitting a 26-bit
7059 bfd_put_32 (output_bfd
,
7061 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
7062 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
7063 bfd_put_32 (output_bfd
, plt_entry
[6],
7064 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
7065 bfd_put_32 (output_bfd
, plt_entry
[7],
7066 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
7068 /* Fill in the GOT entry corresponding to this PLT slot with
7069 the address immediately after the the "bctr" instruction
7070 in this PLT entry. */
7071 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
7072 + htab
->plt
->output_offset
7073 + ent
->plt
.offset
+ 16),
7074 htab
->sgotplt
->contents
+ got_offset
);
7078 /* Fill in a couple of entries in .rela.plt.unloaded. */
7079 loc
= htab
->srelplt2
->contents
7080 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
7081 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
7082 * sizeof (Elf32_External_Rela
));
7084 /* Provide the @ha relocation for the first instruction. */
7085 rela
.r_offset
= (htab
->plt
->output_section
->vma
7086 + htab
->plt
->output_offset
7087 + ent
->plt
.offset
+ 2);
7088 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
7090 rela
.r_addend
= got_offset
;
7091 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7092 loc
+= sizeof (Elf32_External_Rela
);
7094 /* Provide the @l relocation for the second instruction. */
7095 rela
.r_offset
= (htab
->plt
->output_section
->vma
7096 + htab
->plt
->output_offset
7097 + ent
->plt
.offset
+ 6);
7098 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
7100 rela
.r_addend
= got_offset
;
7101 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7102 loc
+= sizeof (Elf32_External_Rela
);
7104 /* Provide a relocation for the GOT entry corresponding to this
7105 PLT slot. Point it at the middle of the .plt entry. */
7106 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
7107 + htab
->sgotplt
->output_offset
7109 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
7111 rela
.r_addend
= ent
->plt
.offset
+ 16;
7112 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7115 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7116 In particular, the offset for the relocation is not the
7117 address of the PLT entry for this function, as specified
7118 by the ABI. Instead, the offset is set to the address of
7119 the GOT slot for this function. See EABI 4.4.4.1. */
7120 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
7121 + htab
->sgotplt
->output_offset
7127 rela
.r_offset
= (htab
->plt
->output_section
->vma
7128 + htab
->plt
->output_offset
7130 if (htab
->plt_type
== PLT_OLD
)
7132 /* We don't need to fill in the .plt. The ppc dynamic
7133 linker will fill it in. */
7137 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
7138 + htab
->glink
->output_section
->vma
7139 + htab
->glink
->output_offset
);
7140 bfd_put_32 (output_bfd
, val
,
7141 htab
->plt
->contents
+ ent
->plt
.offset
);
7145 /* Fill in the entry in the .rela.plt section. */
7146 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
7149 loc
= (htab
->relplt
->contents
7150 + reloc_index
* sizeof (Elf32_External_Rela
));
7151 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7153 if (!h
->def_regular
)
7155 /* Mark the symbol as undefined, rather than as
7156 defined in the .plt section. Leave the value if
7157 there were any relocations where pointer equality
7158 matters (this is a clue for the dynamic linker, to
7159 make function pointer comparisons work between an
7160 application and shared library), otherwise set it
7162 sym
->st_shndx
= SHN_UNDEF
;
7163 if (!h
->pointer_equality_needed
)
7165 else if (!h
->ref_regular_nonweak
)
7167 /* Choose your poison. We must have either text
7168 dynamic relocations, broken function pointer
7169 comparisons, or broken tests for a NULL
7170 function pointer. */
7171 (*_bfd_error_handler
)
7172 (_("weak reference to %s in non-pic code"
7173 " will break function pointer comparisons"),
7174 h
->root
.root
.string
);
7181 if (htab
->plt_type
== PLT_NEW
)
7186 plt
= (ent
->plt
.offset
7187 + htab
->plt
->output_section
->vma
7188 + htab
->plt
->output_offset
);
7189 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
7191 if (info
->shared
|| info
->pie
)
7195 if (ent
->addend
>= 32768)
7197 + ent
->sec
->output_section
->vma
7198 + ent
->sec
->output_offset
);
7199 else if (htab
->elf
.hgot
!= NULL
)
7200 got
= (htab
->elf
.hgot
->root
.u
.def
.value
7201 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7202 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
);
7206 if (plt
+ 0x8000 < 0x10000)
7208 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7210 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7212 bfd_put_32 (output_bfd
, BCTR
, p
);
7214 bfd_put_32 (output_bfd
, NOP
, p
);
7219 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7221 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7223 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7225 bfd_put_32 (output_bfd
, BCTR
, p
);
7231 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7233 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7235 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7237 bfd_put_32 (output_bfd
, BCTR
, p
);
7240 /* We only need one non-PIC glink stub. */
7251 Elf_Internal_Rela rela
;
7254 /* This symbols needs a copy reloc. Set it up. */
7257 fprintf (stderr
, ", copy");
7260 BFD_ASSERT (h
->dynindx
!= -1);
7262 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
7266 BFD_ASSERT (s
!= NULL
);
7268 rela
.r_offset
= (h
->root
.u
.def
.value
7269 + h
->root
.u
.def
.section
->output_section
->vma
7270 + h
->root
.u
.def
.section
->output_offset
);
7271 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
7273 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
7274 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7278 fprintf (stderr
, "\n");
7281 /* Mark some specially defined symbols as absolute. */
7282 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
7283 || (!htab
->is_vxworks
7284 && (h
== htab
->elf
.hgot
7285 || strcmp (h
->root
.root
.string
,
7286 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7287 sym
->st_shndx
= SHN_ABS
;
7292 static enum elf_reloc_type_class
7293 ppc_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
7295 switch (ELF32_R_TYPE (rela
->r_info
))
7297 case R_PPC_RELATIVE
:
7298 return reloc_class_relative
;
7301 case R_PPC_JMP_SLOT
:
7302 return reloc_class_plt
;
7304 return reloc_class_copy
;
7306 return reloc_class_normal
;
7310 /* Finish up the dynamic sections. */
7313 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
7314 struct bfd_link_info
*info
)
7318 struct ppc_elf_link_hash_table
*htab
;
7323 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
7326 htab
= ppc_elf_hash_table (info
);
7327 dynobj
= elf_hash_table (info
)->dynobj
;
7328 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
7329 if (htab
->is_vxworks
)
7330 splt
= bfd_get_section_by_name (dynobj
, ".plt");
7335 if (htab
->elf
.hgot
!= NULL
)
7336 got
= (htab
->elf
.hgot
->root
.u
.def
.value
7337 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7338 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
);
7340 if (htab
->elf
.dynamic_sections_created
)
7342 Elf32_External_Dyn
*dyncon
, *dynconend
;
7344 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
7346 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
7347 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
7348 for (; dyncon
< dynconend
; dyncon
++)
7350 Elf_Internal_Dyn dyn
;
7353 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
7358 if (htab
->is_vxworks
)
7362 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
7366 dyn
.d_un
.d_val
= htab
->relplt
->size
;
7371 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
7375 dyn
.d_un
.d_ptr
= got
;
7379 if (htab
->is_vxworks
)
7382 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
7388 if (htab
->is_vxworks
7389 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
7394 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
7398 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7399 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7400 if (htab
->got
!= NULL
)
7402 unsigned char *p
= htab
->got
->contents
;
7405 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
7406 if (htab
->plt_type
== PLT_OLD
)
7407 bfd_put_32 (output_bfd
, 0x4e800021 /* blrl */, p
- 4);
7411 val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
7412 bfd_put_32 (output_bfd
, val
, p
);
7414 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
7417 /* Fill in the first entry in the VxWorks procedure linkage table. */
7418 if (splt
&& splt
->size
> 0)
7420 /* Use the right PLT. */
7421 static const bfd_vma
*plt_entry
= NULL
;
7422 plt_entry
= info
->shared
?
7423 ppc_elf_vxworks_pic_plt0_entry
: ppc_elf_vxworks_plt0_entry
;
7428 (htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7429 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
7430 + htab
->elf
.hgot
->root
.u
.def
.value
);
7431 bfd_vma got_hi
= (got_value
>> 16) + ((got_value
& 0x8000) >> 15);
7433 bfd_put_32 (output_bfd
, plt_entry
[0] | (got_hi
& 0xffff),
7434 splt
->contents
+ 0);
7435 bfd_put_32 (output_bfd
, plt_entry
[1] | (got_value
& 0xffff),
7436 splt
->contents
+ 4);
7440 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
7441 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
7443 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
7444 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
7445 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
7446 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
7447 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
7448 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
7452 Elf_Internal_Rela rela
;
7455 loc
= htab
->srelplt2
->contents
;
7457 /* Output the @ha relocation for the first instruction. */
7458 rela
.r_offset
= (htab
->plt
->output_section
->vma
7459 + htab
->plt
->output_offset
7461 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
7463 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7464 loc
+= sizeof (Elf32_External_Rela
);
7466 /* Output the @l relocation for the second instruction. */
7467 rela
.r_offset
= (htab
->plt
->output_section
->vma
7468 + htab
->plt
->output_offset
7470 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
7472 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7473 loc
+= sizeof (Elf32_External_Rela
);
7475 /* Fix up the remaining relocations. They may have the wrong
7476 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7477 in which symbols were output. */
7478 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
7480 Elf_Internal_Rela rel
;
7482 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7483 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
7484 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7485 loc
+= sizeof (Elf32_External_Rela
);
7487 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7488 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
7489 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7490 loc
+= sizeof (Elf32_External_Rela
);
7492 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7493 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
7494 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7495 loc
+= sizeof (Elf32_External_Rela
);
7500 if (htab
->glink
!= NULL
&& htab
->glink
->contents
!= NULL
)
7503 unsigned char *endp
;
7508 * PIC glink code is the following:
7510 * # ith PLT code stub.
7511 * addis 11,30,(plt+(i-1)*4-got)@ha
7512 * lwz 11,(plt+(i-1)*4-got)@l(11)
7516 * # A table of branches, one for each plt entry.
7517 * # The idea is that the plt call stub loads ctr (and r11) with these
7518 * # addresses, so (r11 - res_0) gives the plt index * 4.
7519 * res_0: b PLTresolve
7520 * res_1: b PLTresolve
7522 * # Some number of entries towards the end can be nops
7528 * addis 11,11,(1f-res_0)@ha
7531 * 1: addi 11,11,(1b-res_0)@l
7534 * sub 11,11,12 # r11 = index * 4
7535 * addis 12,12,(got+4-1b)@ha
7536 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7537 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7540 * add 11,0,11 # r11 = index * 12 = reloc offset.
7543 static const unsigned int pic_plt_resolve
[] =
7563 static const unsigned int plt_resolve
[] =
7583 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
7585 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
7588 /* Build the branch table, one for each plt entry (less one),
7589 and perhaps some padding. */
7590 p
= htab
->glink
->contents
;
7591 p
+= htab
->glink_pltresolve
;
7592 endp
= htab
->glink
->contents
;
7593 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
7594 while (p
< endp
- 8 * 4)
7596 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
7601 bfd_put_32 (output_bfd
, NOP
, p
);
7605 res0
= (htab
->glink_pltresolve
7606 + htab
->glink
->output_section
->vma
7607 + htab
->glink
->output_offset
);
7609 /* Last comes the PLTresolve stub. */
7610 if (info
->shared
|| info
->pie
)
7614 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
7616 bfd_put_32 (output_bfd
, pic_plt_resolve
[i
], p
);
7619 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
7621 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
7622 + htab
->glink
->output_section
->vma
7623 + htab
->glink
->output_offset
);
7625 bfd_put_32 (output_bfd
,
7626 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
7627 bfd_put_32 (output_bfd
,
7628 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
7629 bfd_put_32 (output_bfd
,
7630 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
7631 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
7633 bfd_put_32 (output_bfd
,
7634 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
7635 bfd_put_32 (output_bfd
,
7636 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
7640 bfd_put_32 (output_bfd
,
7641 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
7642 bfd_put_32 (output_bfd
,
7643 LWZ_12_12
+ 4, p
+ 9*4);
7648 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
7650 bfd_put_32 (output_bfd
, plt_resolve
[i
], p
);
7653 p
-= 4 * ARRAY_SIZE (plt_resolve
);
7655 bfd_put_32 (output_bfd
,
7656 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
7657 bfd_put_32 (output_bfd
,
7658 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
7659 bfd_put_32 (output_bfd
,
7660 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
7661 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
7663 bfd_put_32 (output_bfd
,
7664 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
7665 bfd_put_32 (output_bfd
,
7666 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
7670 bfd_put_32 (output_bfd
,
7671 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
7672 bfd_put_32 (output_bfd
,
7673 LWZ_12_12
+ 4, p
+ 6*4);
7681 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7682 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7683 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7684 #define TARGET_BIG_NAME "elf32-powerpc"
7685 #define ELF_ARCH bfd_arch_powerpc
7686 #define ELF_MACHINE_CODE EM_PPC
7687 #ifdef __QNXTARGET__
7688 #define ELF_MAXPAGESIZE 0x1000
7690 #define ELF_MAXPAGESIZE 0x10000
7692 #define ELF_MINPAGESIZE 0x1000
7693 #define ELF_COMMONPAGESIZE 0x1000
7694 #define elf_info_to_howto ppc_elf_info_to_howto
7696 #ifdef EM_CYGNUS_POWERPC
7697 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7701 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7704 #define elf_backend_plt_not_loaded 1
7705 #define elf_backend_can_gc_sections 1
7706 #define elf_backend_can_refcount 1
7707 #define elf_backend_rela_normal 1
7709 #define bfd_elf32_mkobject ppc_elf_mkobject
7710 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7711 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7712 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7713 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
7714 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7715 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7717 #define elf_backend_object_p ppc_elf_object_p
7718 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7719 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7720 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7721 #define elf_backend_relocate_section ppc_elf_relocate_section
7722 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7723 #define elf_backend_check_relocs ppc_elf_check_relocs
7724 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7725 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7726 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7727 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7728 #define elf_backend_hash_symbol ppc_elf_hash_symbol
7729 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7730 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7731 #define elf_backend_fake_sections ppc_elf_fake_sections
7732 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7733 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7734 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7735 #define elf_backend_write_core_note ppc_elf_write_core_note
7736 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7737 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7738 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7739 #define elf_backend_write_section ppc_elf_write_section
7740 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7741 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7742 #define elf_backend_action_discarded ppc_elf_action_discarded
7743 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
7745 #include "elf32-target.h"
7747 /* VxWorks Target */
7749 #undef TARGET_LITTLE_SYM
7750 #undef TARGET_LITTLE_NAME
7752 #undef TARGET_BIG_SYM
7753 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7754 #undef TARGET_BIG_NAME
7755 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7757 /* VxWorks uses the elf default section flags for .plt. */
7758 static const struct bfd_elf_special_section
*
7759 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
7761 if (sec
->name
== NULL
)
7764 if (strcmp (sec
->name
, ".plt") == 0)
7765 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
7767 return ppc_elf_get_sec_type_attr (abfd
, sec
);
7770 /* Like ppc_elf_link_hash_table_create, but overrides
7771 appropriately for VxWorks. */
7772 static struct bfd_link_hash_table
*
7773 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
7775 struct bfd_link_hash_table
*ret
;
7777 ret
= ppc_elf_link_hash_table_create (abfd
);
7780 struct ppc_elf_link_hash_table
*htab
7781 = (struct ppc_elf_link_hash_table
*)ret
;
7782 htab
->is_vxworks
= 1;
7783 htab
->plt_type
= PLT_VXWORKS
;
7784 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
7785 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
7786 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
7791 /* Tweak magic VxWorks symbols as they are loaded. */
7793 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
7794 struct bfd_link_info
*info
,
7795 Elf_Internal_Sym
*sym
,
7796 const char **namep ATTRIBUTE_UNUSED
,
7797 flagword
*flagsp ATTRIBUTE_UNUSED
,
7801 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
7805 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
7809 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
7811 ppc_elf_final_write_processing(abfd
, linker
);
7812 elf_vxworks_final_write_processing(abfd
, linker
);
7815 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7817 #undef elf_backend_want_plt_sym
7818 #define elf_backend_want_plt_sym 1
7819 #undef elf_backend_want_got_plt
7820 #define elf_backend_want_got_plt 1
7821 #undef elf_backend_got_symbol_offset
7822 #define elf_backend_got_symbol_offset 0
7823 #undef elf_backend_plt_not_loaded
7824 #define elf_backend_plt_not_loaded 0
7825 #undef elf_backend_plt_readonly
7826 #define elf_backend_plt_readonly 1
7827 #undef elf_backend_got_header_size
7828 #define elf_backend_got_header_size 12
7830 #undef bfd_elf32_bfd_link_hash_table_create
7831 #define bfd_elf32_bfd_link_hash_table_create \
7832 ppc_elf_vxworks_link_hash_table_create
7833 #undef elf_backend_add_symbol_hook
7834 #define elf_backend_add_symbol_hook \
7835 ppc_elf_vxworks_add_symbol_hook
7836 #undef elf_backend_link_output_symbol_hook
7837 #define elf_backend_link_output_symbol_hook \
7838 elf_vxworks_link_output_symbol_hook
7839 #undef elf_backend_final_write_processing
7840 #define elf_backend_final_write_processing \
7841 ppc_elf_vxworks_final_write_processing
7842 #undef elf_backend_get_sec_type_attr
7843 #define elf_backend_get_sec_type_attr \
7844 ppc_elf_vxworks_get_sec_type_attr
7845 #undef elf_backend_emit_relocs
7846 #define elf_backend_emit_relocs \
7847 elf_vxworks_emit_relocs
7850 #define elf32_bed ppc_elf_vxworks_bed
7852 #include "elf32-target.h"