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 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 /* Override the generic function because we store some extras. */
1742 ppc_elf_mkobject (bfd
*abfd
)
1744 if (abfd
->tdata
.any
== NULL
)
1746 bfd_size_type amt
= sizeof (struct ppc_elf_obj_tdata
);
1747 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
1748 if (abfd
->tdata
.any
== NULL
)
1751 return bfd_elf_mkobject (abfd
);
1754 /* Fix bad default arch selected for a 32 bit input bfd when the
1755 default is 64 bit. */
1758 ppc_elf_object_p (bfd
*abfd
)
1760 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 64)
1762 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
1764 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
1766 /* Relies on arch after 64 bit default being 32 bit default. */
1767 abfd
->arch_info
= abfd
->arch_info
->next
;
1768 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
1774 /* Function to set whether a module needs the -mrelocatable bit set. */
1777 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
1779 BFD_ASSERT (!elf_flags_init (abfd
)
1780 || elf_elfheader (abfd
)->e_flags
== flags
);
1782 elf_elfheader (abfd
)->e_flags
= flags
;
1783 elf_flags_init (abfd
) = TRUE
;
1787 /* Support for core dump NOTE sections. */
1790 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1795 switch (note
->descsz
)
1800 case 268: /* Linux/PPC. */
1802 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1805 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1814 /* Make a ".reg/999" section. */
1815 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1816 size
, note
->descpos
+ offset
);
1820 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1822 switch (note
->descsz
)
1827 case 128: /* Linux/PPC elf_prpsinfo. */
1828 elf_tdata (abfd
)->core_program
1829 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
1830 elf_tdata (abfd
)->core_command
1831 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
1834 /* Note that for some reason, a spurious space is tacked
1835 onto the end of the args in some (at least one anyway)
1836 implementations, so strip it off if it exists. */
1839 char *command
= elf_tdata (abfd
)->core_command
;
1840 int n
= strlen (command
);
1842 if (0 < n
&& command
[n
- 1] == ' ')
1843 command
[n
- 1] = '\0';
1850 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
1862 va_start (ap
, note_type
);
1863 memset (data
, 0, 32);
1864 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
1865 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
1867 return elfcore_write_note (abfd
, buf
, bufsiz
,
1868 "CORE", note_type
, data
, sizeof (data
));
1879 va_start (ap
, note_type
);
1880 memset (data
, 0, 72);
1881 pid
= va_arg (ap
, long);
1882 bfd_put_32 (abfd
, pid
, data
+ 24);
1883 cursig
= va_arg (ap
, int);
1884 bfd_put_16 (abfd
, cursig
, data
+ 12);
1885 greg
= va_arg (ap
, const void *);
1886 memcpy (data
+ 72, greg
, 192);
1887 memset (data
+ 264, 0, 4);
1889 return elfcore_write_note (abfd
, buf
, bufsiz
,
1890 "CORE", note_type
, data
, sizeof (data
));
1895 /* Return address for Ith PLT stub in section PLT, for relocation REL
1896 or (bfd_vma) -1 if it should not be included. */
1899 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
1900 const asection
*plt ATTRIBUTE_UNUSED
,
1903 return rel
->address
;
1906 /* Handle a PowerPC specific section when reading an object file. This
1907 is called when bfd_section_from_shdr finds a section with an unknown
1911 ppc_elf_section_from_shdr (bfd
*abfd
,
1912 Elf_Internal_Shdr
*hdr
,
1919 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
1922 newsect
= hdr
->bfd_section
;
1923 flags
= bfd_get_section_flags (abfd
, newsect
);
1924 if (hdr
->sh_flags
& SHF_EXCLUDE
)
1925 flags
|= SEC_EXCLUDE
;
1927 if (hdr
->sh_type
== SHT_ORDERED
)
1928 flags
|= SEC_SORT_ENTRIES
;
1930 bfd_set_section_flags (abfd
, newsect
, flags
);
1934 /* Set up any other section flags and such that may be necessary. */
1937 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
1938 Elf_Internal_Shdr
*shdr
,
1941 if ((asect
->flags
& (SEC_GROUP
| SEC_EXCLUDE
)) == SEC_EXCLUDE
)
1942 shdr
->sh_flags
|= SHF_EXCLUDE
;
1944 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
1945 shdr
->sh_type
= SHT_ORDERED
;
1950 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1951 need to bump up the number of section headers. */
1954 ppc_elf_additional_program_headers (bfd
*abfd
,
1955 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
1960 s
= bfd_get_section_by_name (abfd
, ".sbss2");
1961 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
1964 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
1965 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
1971 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1972 .PPC.EMB.sbss0 a normal section, and not a bss section so
1973 that the linker doesn't crater when trying to make more than
1976 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
1978 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
1979 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
1980 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
1981 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
1982 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
1983 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
1984 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE
, 0 },
1985 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
1986 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
1987 { NULL
, 0, 0, 0, 0 }
1990 /* This is what we want for new plt/got. */
1991 static struct bfd_elf_special_section ppc_alt_plt
=
1992 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
1994 static const struct bfd_elf_special_section
*
1995 ppc_elf_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
1997 const struct bfd_elf_special_section
*ssect
;
1999 /* See if this is one of the special sections. */
2000 if (sec
->name
== NULL
)
2003 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2007 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2008 ssect
= &ppc_alt_plt
;
2012 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2015 /* Very simple linked list structure for recording apuinfo values. */
2016 typedef struct apuinfo_list
2018 struct apuinfo_list
*next
;
2019 unsigned long value
;
2023 static apuinfo_list
*head
;
2027 apuinfo_list_init (void)
2033 apuinfo_list_add (unsigned long value
)
2035 apuinfo_list
*entry
= head
;
2037 while (entry
!= NULL
)
2039 if (entry
->value
== value
)
2041 entry
= entry
->next
;
2044 entry
= bfd_malloc (sizeof (* entry
));
2048 entry
->value
= value
;
2054 apuinfo_list_length (void)
2056 apuinfo_list
*entry
;
2057 unsigned long count
;
2059 for (entry
= head
, count
= 0;
2061 entry
= entry
->next
)
2067 static inline unsigned long
2068 apuinfo_list_element (unsigned long number
)
2070 apuinfo_list
* entry
;
2074 entry
= entry
->next
)
2077 return entry
? entry
->value
: 0;
2081 apuinfo_list_finish (void)
2083 apuinfo_list
*entry
;
2085 for (entry
= head
; entry
;)
2087 apuinfo_list
*next
= entry
->next
;
2095 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2096 #define APUINFO_LABEL "APUinfo"
2098 /* Scan the input BFDs and create a linked list of
2099 the APUinfo values that will need to be emitted. */
2102 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2107 unsigned num_input_sections
;
2108 bfd_size_type output_section_size
;
2110 unsigned num_entries
;
2111 unsigned long offset
;
2112 unsigned long length
;
2113 const char *error_message
= NULL
;
2115 if (link_info
== NULL
)
2118 /* Scan the input bfds, looking for apuinfo sections. */
2119 num_input_sections
= 0;
2120 output_section_size
= 0;
2122 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2124 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2127 ++ num_input_sections
;
2128 output_section_size
+= asec
->size
;
2132 /* We need at least one input sections
2133 in order to make merging worthwhile. */
2134 if (num_input_sections
< 1)
2137 /* Just make sure that the output section exists as well. */
2138 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2142 /* Allocate a buffer for the contents of the input sections. */
2143 buffer
= bfd_malloc (output_section_size
);
2148 apuinfo_list_init ();
2150 /* Read in the input sections contents. */
2151 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
2153 unsigned long datum
;
2156 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2160 length
= asec
->size
;
2163 error_message
= _("corrupt or empty %s section in %B");
2167 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2168 || (bfd_bread (buffer
+ offset
, length
, ibfd
) != length
))
2170 error_message
= _("unable to read in %s section from %B");
2174 /* Process the contents of the section. */
2175 ptr
= buffer
+ offset
;
2176 error_message
= _("corrupt %s section in %B");
2178 /* Verify the contents of the header. Note - we have to
2179 extract the values this way in order to allow for a
2180 host whose endian-ness is different from the target. */
2181 datum
= bfd_get_32 (ibfd
, ptr
);
2182 if (datum
!= sizeof APUINFO_LABEL
)
2185 datum
= bfd_get_32 (ibfd
, ptr
+ 8);
2189 if (strcmp (ptr
+ 12, APUINFO_LABEL
) != 0)
2192 /* Get the number of bytes used for apuinfo entries. */
2193 datum
= bfd_get_32 (ibfd
, ptr
+ 4);
2194 if (datum
+ 20 != length
)
2197 /* Make sure that we do not run off the end of the section. */
2198 if (offset
+ length
> output_section_size
)
2201 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2202 for (i
= 0; i
< datum
; i
+= 4)
2203 apuinfo_list_add (bfd_get_32 (ibfd
, ptr
+ 20 + i
));
2205 /* Update the offset. */
2209 error_message
= NULL
;
2211 /* Compute the size of the output section. */
2212 num_entries
= apuinfo_list_length ();
2213 output_section_size
= 20 + num_entries
* 4;
2215 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2217 if (! bfd_set_section_size (abfd
, asec
, output_section_size
))
2219 error_message
= _("warning: unable to set size of %s section in %B");
2225 (*_bfd_error_handler
) (error_message
, ibfd
, APUINFO_SECTION_NAME
);
2228 /* Prevent the output section from accumulating the input sections'
2229 contents. We have already stored this in our linked list structure. */
2232 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2233 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2235 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2237 return (apuinfo_list_length ()
2238 && strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0);
2241 /* Finally we can generate the output section. */
2244 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2249 unsigned num_entries
;
2250 bfd_size_type length
;
2252 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2256 if (apuinfo_list_length () == 0)
2259 length
= asec
->size
;
2263 buffer
= bfd_malloc (length
);
2266 (*_bfd_error_handler
)
2267 (_("failed to allocate space for new APUinfo section."));
2271 /* Create the apuinfo header. */
2272 num_entries
= apuinfo_list_length ();
2273 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2274 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2275 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2276 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2279 for (i
= 0; i
< num_entries
; i
++)
2281 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2285 if (length
!= asec
->size
)
2286 (*_bfd_error_handler
) (_("failed to compute new APUinfo section."));
2288 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2289 (*_bfd_error_handler
) (_("failed to install new APUinfo section."));
2293 apuinfo_list_finish ();
2296 /* The following functions are specific to the ELF linker, while
2297 functions above are used generally. They appear in this file more
2298 or less in the order in which they are called. eg.
2299 ppc_elf_check_relocs is called early in the link process,
2300 ppc_elf_finish_dynamic_sections is one of the last functions
2303 /* The PPC linker needs to keep track of the number of relocs that it
2304 decides to copy as dynamic relocs in check_relocs for each symbol.
2305 This is so that it can later discard them if they are found to be
2306 unnecessary. We store the information in a field extending the
2307 regular ELF linker hash table. */
2309 struct ppc_elf_dyn_relocs
2311 struct ppc_elf_dyn_relocs
*next
;
2313 /* The input section of the reloc. */
2316 /* Total number of relocs copied for the input section. */
2317 bfd_size_type count
;
2319 /* Number of pc-relative relocs copied for the input section. */
2320 bfd_size_type pc_count
;
2323 /* Track PLT entries needed for a given symbol. We might need more
2324 than one glink entry per symbol. */
2327 struct plt_entry
*next
;
2329 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2330 This field stores the offset into .got2 used to initialise the
2331 GOT pointer reg. It will always be at least 32768 (and for
2332 current gcc this is the only offset used). */
2335 /* The .got2 section. */
2338 /* PLT refcount or offset. */
2341 bfd_signed_vma refcount
;
2345 /* .glink stub offset. */
2346 bfd_vma glink_offset
;
2349 /* Of those relocs that might be copied as dynamic relocs, this macro
2350 selects those that must be copied when linking a shared library,
2351 even when the symbol is local. */
2353 #define MUST_BE_DYN_RELOC(RTYPE) \
2354 ((RTYPE) != R_PPC_REL24 \
2355 && (RTYPE) != R_PPC_REL14 \
2356 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2357 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2358 && (RTYPE) != R_PPC_REL32)
2360 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2361 copying dynamic variables from a shared lib into an app's dynbss
2362 section, and instead use a dynamic relocation to point into the
2364 #define ELIMINATE_COPY_RELOCS 1
2366 /* PPC ELF linker hash entry. */
2368 struct ppc_elf_link_hash_entry
2370 struct elf_link_hash_entry elf
;
2372 /* If this symbol is used in the linker created sections, the processor
2373 specific backend uses this field to map the field into the offset
2374 from the beginning of the section. */
2375 elf_linker_section_pointers_t
*linker_section_pointer
;
2377 /* Track dynamic relocs copied for this symbol. */
2378 struct ppc_elf_dyn_relocs
*dyn_relocs
;
2380 /* Contexts in which symbol is used in the GOT (or TOC).
2381 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2382 corresponding relocs are encountered during check_relocs.
2383 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2384 indicate the corresponding GOT entry type is not needed. */
2385 #define TLS_GD 1 /* GD reloc. */
2386 #define TLS_LD 2 /* LD reloc. */
2387 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2388 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2389 #define TLS_TLS 16 /* Any TLS reloc. */
2390 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2393 /* Nonzero if we have seen a small data relocation referring to this
2395 unsigned char has_sda_refs
;
2398 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2400 /* PPC ELF linker hash table. */
2402 struct ppc_elf_link_hash_table
2404 struct elf_link_hash_table elf
;
2406 /* Short-cuts to get to dynamic linker sections. */
2416 elf_linker_section_t sdata
[2];
2419 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2422 /* The .got.plt section (VxWorks only)*/
2425 /* Shortcut to .__tls_get_addr. */
2426 struct elf_link_hash_entry
*tls_get_addr
;
2428 /* The bfd that forced an old-style PLT. */
2431 /* TLS local dynamic got entry handling. */
2433 bfd_signed_vma refcount
;
2437 /* Offset of PltResolve function in glink. */
2438 bfd_vma glink_pltresolve
;
2440 /* Size of reserved GOT entries. */
2441 unsigned int got_header_size
;
2442 /* Non-zero if allocating the header left a gap. */
2443 unsigned int got_gap
;
2445 /* The type of PLT we have chosen to use. */
2446 enum ppc_elf_plt_type plt_type
;
2448 /* Set if we should emit symbols for stubs. */
2449 unsigned int emit_stub_syms
:1;
2451 /* True if the target system is VxWorks. */
2452 unsigned int is_vxworks
:1;
2454 /* The size of PLT entries. */
2456 /* The distance between adjacent PLT slots. */
2458 /* The size of the first PLT entry. */
2459 int plt_initial_entry_size
;
2461 /* Small local sym to section mapping cache. */
2462 struct sym_sec_cache sym_sec
;
2465 /* Get the PPC ELF linker hash table from a link_info structure. */
2467 #define ppc_elf_hash_table(p) \
2468 ((struct ppc_elf_link_hash_table *) (p)->hash)
2470 /* Create an entry in a PPC ELF linker hash table. */
2472 static struct bfd_hash_entry
*
2473 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2474 struct bfd_hash_table
*table
,
2477 /* Allocate the structure if it has not already been allocated by a
2481 entry
= bfd_hash_allocate (table
,
2482 sizeof (struct ppc_elf_link_hash_entry
));
2487 /* Call the allocation method of the superclass. */
2488 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
2491 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
2492 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
2493 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
2499 /* Create a PPC ELF linker hash table. */
2501 static struct bfd_link_hash_table
*
2502 ppc_elf_link_hash_table_create (bfd
*abfd
)
2504 struct ppc_elf_link_hash_table
*ret
;
2506 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
2510 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
2511 ppc_elf_link_hash_newfunc
,
2512 sizeof (struct ppc_elf_link_hash_entry
)))
2518 ret
->elf
.init_plt_refcount
.refcount
= 0;
2519 ret
->elf
.init_plt_refcount
.glist
= NULL
;
2520 ret
->elf
.init_plt_offset
.offset
= 0;
2521 ret
->elf
.init_plt_offset
.glist
= NULL
;
2523 ret
->sdata
[0].name
= ".sdata";
2524 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
2525 ret
->sdata
[0].bss_name
= ".sbss";
2527 ret
->sdata
[1].name
= ".sdata2";
2528 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
2529 ret
->sdata
[1].bss_name
= ".sbss2";
2531 ret
->plt_entry_size
= 12;
2532 ret
->plt_slot_size
= 8;
2533 ret
->plt_initial_entry_size
= 72;
2535 return &ret
->elf
.root
;
2538 /* Create .got and the related sections. */
2541 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
2543 struct ppc_elf_link_hash_table
*htab
;
2547 if (!_bfd_elf_create_got_section (abfd
, info
))
2550 htab
= ppc_elf_hash_table (info
);
2551 htab
->got
= s
= bfd_get_section_by_name (abfd
, ".got");
2555 if (htab
->is_vxworks
)
2557 htab
->sgotplt
= bfd_get_section_by_name (abfd
, ".got.plt");
2563 /* The powerpc .got has a blrl instruction in it. Mark it
2565 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
2566 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2567 if (!bfd_set_section_flags (abfd
, s
, flags
))
2571 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2572 | SEC_LINKER_CREATED
| SEC_READONLY
);
2573 htab
->relgot
= bfd_make_section_with_flags (abfd
, ".rela.got", flags
);
2575 || ! bfd_set_section_alignment (abfd
, htab
->relgot
, 2))
2581 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2582 to output sections (just like _bfd_elf_create_dynamic_sections has
2583 to create .dynbss and .rela.bss). */
2586 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2588 struct ppc_elf_link_hash_table
*htab
;
2592 htab
= ppc_elf_hash_table (info
);
2594 if (htab
->got
== NULL
2595 && !ppc_elf_create_got (abfd
, info
))
2598 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
2601 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
2602 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
2604 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
| SEC_CODE
);
2607 || !bfd_set_section_alignment (abfd
, s
, 4))
2610 htab
->dynbss
= bfd_get_section_by_name (abfd
, ".dynbss");
2611 s
= bfd_make_section_with_flags (abfd
, ".dynsbss",
2612 SEC_ALLOC
| SEC_LINKER_CREATED
);
2619 htab
->relbss
= bfd_get_section_by_name (abfd
, ".rela.bss");
2620 s
= bfd_make_section_with_flags (abfd
, ".rela.sbss", flags
);
2623 || ! bfd_set_section_alignment (abfd
, s
, 2))
2627 if (htab
->is_vxworks
2628 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
2631 htab
->relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2632 htab
->plt
= s
= bfd_get_section_by_name (abfd
, ".plt");
2636 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
2637 if (htab
->plt_type
== PLT_VXWORKS
)
2638 /* The VxWorks PLT is a loaded section with contents. */
2639 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
2640 return bfd_set_section_flags (abfd
, s
, flags
);
2643 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2646 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2647 struct elf_link_hash_entry
*dir
,
2648 struct elf_link_hash_entry
*ind
)
2650 struct ppc_elf_link_hash_entry
*edir
, *eind
;
2652 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
2653 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
2655 if (eind
->dyn_relocs
!= NULL
)
2657 if (edir
->dyn_relocs
!= NULL
)
2659 struct ppc_elf_dyn_relocs
**pp
;
2660 struct ppc_elf_dyn_relocs
*p
;
2662 /* Add reloc counts against the indirect sym to the direct sym
2663 list. Merge any entries against the same section. */
2664 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
2666 struct ppc_elf_dyn_relocs
*q
;
2668 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2669 if (q
->sec
== p
->sec
)
2671 q
->pc_count
+= p
->pc_count
;
2672 q
->count
+= p
->count
;
2679 *pp
= edir
->dyn_relocs
;
2682 edir
->dyn_relocs
= eind
->dyn_relocs
;
2683 eind
->dyn_relocs
= NULL
;
2686 edir
->tls_mask
|= eind
->tls_mask
;
2687 edir
->has_sda_refs
|= eind
->has_sda_refs
;
2689 /* If called to transfer flags for a weakdef during processing
2690 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2691 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2692 if (!(ELIMINATE_COPY_RELOCS
2693 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
2694 && edir
->elf
.dynamic_adjusted
))
2695 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
2697 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
2698 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
2699 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
2700 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
2702 /* If we were called to copy over info for a weak sym, that's all. */
2703 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
2706 /* Copy over the GOT refcount entries that we may have already seen to
2707 the symbol which just became indirect. */
2708 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
2709 eind
->elf
.got
.refcount
= 0;
2711 /* And plt entries. */
2712 if (eind
->elf
.plt
.plist
!= NULL
)
2714 if (edir
->elf
.plt
.plist
!= NULL
)
2716 struct plt_entry
**entp
;
2717 struct plt_entry
*ent
;
2719 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
2721 struct plt_entry
*dent
;
2723 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
2724 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
2726 dent
->plt
.refcount
+= ent
->plt
.refcount
;
2733 *entp
= edir
->elf
.plt
.plist
;
2736 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
2737 eind
->elf
.plt
.plist
= NULL
;
2740 if (eind
->elf
.dynindx
!= -1)
2742 if (edir
->elf
.dynindx
!= -1)
2743 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
2744 edir
->elf
.dynstr_index
);
2745 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
2746 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
2747 eind
->elf
.dynindx
= -1;
2748 eind
->elf
.dynstr_index
= 0;
2752 /* Return 1 if target is one of ours. */
2755 is_ppc_elf_target (const struct bfd_target
*targ
)
2757 extern const bfd_target bfd_elf32_powerpc_vec
;
2758 extern const bfd_target bfd_elf32_powerpc_vxworks_vec
;
2759 extern const bfd_target bfd_elf32_powerpcle_vec
;
2761 return (targ
== &bfd_elf32_powerpc_vec
2762 || targ
== &bfd_elf32_powerpc_vxworks_vec
2763 || targ
== &bfd_elf32_powerpcle_vec
);
2766 /* Hook called by the linker routine which adds symbols from an object
2767 file. We use it to put .comm items in .sbss, and not .bss. */
2770 ppc_elf_add_symbol_hook (bfd
*abfd
,
2771 struct bfd_link_info
*info
,
2772 Elf_Internal_Sym
*sym
,
2773 const char **namep ATTRIBUTE_UNUSED
,
2774 flagword
*flagsp ATTRIBUTE_UNUSED
,
2778 if (sym
->st_shndx
== SHN_COMMON
2779 && !info
->relocatable
2780 && sym
->st_size
<= elf_gp_size (abfd
)
2781 && is_ppc_elf_target (info
->hash
->creator
))
2783 /* Common symbols less than or equal to -G nn bytes are automatically
2785 struct ppc_elf_link_hash_table
*htab
;
2787 htab
= ppc_elf_hash_table (info
);
2788 if (htab
->sbss
== NULL
)
2790 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
2792 if (!htab
->elf
.dynobj
)
2793 htab
->elf
.dynobj
= abfd
;
2795 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
2798 if (htab
->sbss
== NULL
)
2803 *valp
= sym
->st_size
;
2810 create_sdata_sym (struct ppc_elf_link_hash_table
*htab
,
2811 elf_linker_section_t
*lsect
)
2813 lsect
->sym
= elf_link_hash_lookup (&htab
->elf
, lsect
->sym_name
,
2815 if (lsect
->sym
== NULL
)
2817 if (lsect
->sym
->root
.type
== bfd_link_hash_new
)
2818 lsect
->sym
->non_elf
= 0;
2819 lsect
->sym
->ref_regular
= 1;
2823 /* Create a special linker section. */
2826 ppc_elf_create_linker_section (bfd
*abfd
,
2827 struct bfd_link_info
*info
,
2829 elf_linker_section_t
*lsect
)
2831 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
2834 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2835 | SEC_LINKER_CREATED
);
2837 /* Record the first bfd that needs the special sections. */
2838 if (!htab
->elf
.dynobj
)
2839 htab
->elf
.dynobj
= abfd
;
2841 s
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
2845 || !bfd_set_section_alignment (htab
->elf
.dynobj
, s
, 2))
2849 return create_sdata_sym (htab
, lsect
);
2852 /* Find a linker generated pointer with a given addend and type. */
2854 static elf_linker_section_pointers_t
*
2855 elf_find_pointer_linker_section
2856 (elf_linker_section_pointers_t
*linker_pointers
,
2858 elf_linker_section_t
*lsect
)
2860 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
2861 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
2862 return linker_pointers
;
2867 /* Allocate a pointer to live in a linker created section. */
2870 elf_create_pointer_linker_section (bfd
*abfd
,
2871 elf_linker_section_t
*lsect
,
2872 struct elf_link_hash_entry
*h
,
2873 const Elf_Internal_Rela
*rel
)
2875 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
2876 elf_linker_section_pointers_t
*linker_section_ptr
;
2877 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
2880 BFD_ASSERT (lsect
!= NULL
);
2882 /* Is this a global symbol? */
2885 struct ppc_elf_link_hash_entry
*eh
;
2887 /* Has this symbol already been allocated? If so, our work is done. */
2888 eh
= (struct ppc_elf_link_hash_entry
*) h
;
2889 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
2894 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
2898 /* Allocation of a pointer to a local symbol. */
2899 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
2901 /* Allocate a table to hold the local symbols if first time. */
2904 unsigned int num_symbols
= elf_tdata (abfd
)->symtab_hdr
.sh_info
;
2907 amt
*= sizeof (elf_linker_section_pointers_t
*);
2908 ptr
= bfd_zalloc (abfd
, amt
);
2913 elf_local_ptr_offsets (abfd
) = ptr
;
2916 /* Has this symbol already been allocated? If so, our work is done. */
2917 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
2922 ptr_linker_section_ptr
= &ptr
[r_symndx
];
2925 /* Allocate space for a pointer in the linker section, and allocate
2926 a new pointer record from internal memory. */
2927 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
2928 amt
= sizeof (elf_linker_section_pointers_t
);
2929 linker_section_ptr
= bfd_alloc (abfd
, amt
);
2931 if (!linker_section_ptr
)
2934 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
2935 linker_section_ptr
->addend
= rel
->r_addend
;
2936 linker_section_ptr
->lsect
= lsect
;
2937 *ptr_linker_section_ptr
= linker_section_ptr
;
2939 linker_section_ptr
->offset
= lsect
->section
->size
;
2940 lsect
->section
->size
+= 4;
2944 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2945 lsect
->name
, (long) linker_section_ptr
->offset
,
2946 (long) lsect
->section
->size
);
2953 update_local_sym_info (bfd
*abfd
,
2954 Elf_Internal_Shdr
*symtab_hdr
,
2955 unsigned long r_symndx
,
2958 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
2959 char *local_got_tls_masks
;
2961 if (local_got_refcounts
== NULL
)
2963 bfd_size_type size
= symtab_hdr
->sh_info
;
2965 size
*= sizeof (*local_got_refcounts
) + sizeof (*local_got_tls_masks
);
2966 local_got_refcounts
= bfd_zalloc (abfd
, size
);
2967 if (local_got_refcounts
== NULL
)
2969 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2972 local_got_refcounts
[r_symndx
] += 1;
2973 local_got_tls_masks
= (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
2974 local_got_tls_masks
[r_symndx
] |= tls_type
;
2979 update_plt_info (bfd
*abfd
, struct elf_link_hash_entry
*h
,
2980 asection
*sec
, bfd_vma addend
)
2982 struct plt_entry
*ent
;
2986 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
2987 if (ent
->sec
== sec
&& ent
->addend
== addend
)
2991 bfd_size_type amt
= sizeof (*ent
);
2992 ent
= bfd_alloc (abfd
, amt
);
2995 ent
->next
= h
->plt
.plist
;
2997 ent
->addend
= addend
;
2998 ent
->plt
.refcount
= 0;
3001 ent
->plt
.refcount
+= 1;
3005 static struct plt_entry
*
3006 find_plt_ent (struct elf_link_hash_entry
*h
, asection
*sec
, bfd_vma addend
)
3008 struct plt_entry
*ent
;
3012 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
3013 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3019 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3021 (*_bfd_error_handler
)
3022 (_("%B: relocation %s cannot be used when making a shared object"),
3024 ppc_elf_howto_table
[r_type
]->name
);
3025 bfd_set_error (bfd_error_bad_value
);
3028 /* Look through the relocs for a section during the first phase, and
3029 allocate space in the global offset table or procedure linkage
3033 ppc_elf_check_relocs (bfd
*abfd
,
3034 struct bfd_link_info
*info
,
3036 const Elf_Internal_Rela
*relocs
)
3038 struct ppc_elf_link_hash_table
*htab
;
3039 Elf_Internal_Shdr
*symtab_hdr
;
3040 struct elf_link_hash_entry
**sym_hashes
;
3041 const Elf_Internal_Rela
*rel
;
3042 const Elf_Internal_Rela
*rel_end
;
3043 asection
*got2
, *sreloc
;
3045 if (info
->relocatable
)
3048 /* Don't do anything special with non-loaded, non-alloced sections.
3049 In particular, any relocs in such sections should not affect GOT
3050 and PLT reference counting (ie. we don't allow them to create GOT
3051 or PLT entries), there's no possibility or desire to optimize TLS
3052 relocs, and there's not much point in propagating relocs to shared
3053 libs that the dynamic linker won't relocate. */
3054 if ((sec
->flags
& SEC_ALLOC
) == 0)
3058 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3062 /* Initialize howto table if not already done. */
3063 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3064 ppc_elf_howto_init ();
3066 htab
= ppc_elf_hash_table (info
);
3067 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3068 sym_hashes
= elf_sym_hashes (abfd
);
3069 got2
= bfd_get_section_by_name (abfd
, ".got2");
3072 rel_end
= relocs
+ sec
->reloc_count
;
3073 for (rel
= relocs
; rel
< rel_end
; rel
++)
3075 unsigned long r_symndx
;
3076 enum elf_ppc_reloc_type r_type
;
3077 struct elf_link_hash_entry
*h
;
3080 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3081 if (r_symndx
< symtab_hdr
->sh_info
)
3085 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3086 while (h
->root
.type
== bfd_link_hash_indirect
3087 || h
->root
.type
== bfd_link_hash_warning
)
3088 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3091 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3092 This shows up in particular in an R_PPC_ADDR32 in the eabi
3095 && htab
->got
== NULL
3096 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3098 if (htab
->elf
.dynobj
== NULL
)
3099 htab
->elf
.dynobj
= abfd
;
3100 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3102 BFD_ASSERT (h
== htab
->elf
.hgot
);
3105 r_type
= ELF32_R_TYPE (rel
->r_info
);
3108 case R_PPC_GOT_TLSLD16
:
3109 case R_PPC_GOT_TLSLD16_LO
:
3110 case R_PPC_GOT_TLSLD16_HI
:
3111 case R_PPC_GOT_TLSLD16_HA
:
3112 htab
->tlsld_got
.refcount
+= 1;
3113 tls_type
= TLS_TLS
| TLS_LD
;
3116 case R_PPC_GOT_TLSGD16
:
3117 case R_PPC_GOT_TLSGD16_LO
:
3118 case R_PPC_GOT_TLSGD16_HI
:
3119 case R_PPC_GOT_TLSGD16_HA
:
3120 tls_type
= TLS_TLS
| TLS_GD
;
3123 case R_PPC_GOT_TPREL16
:
3124 case R_PPC_GOT_TPREL16_LO
:
3125 case R_PPC_GOT_TPREL16_HI
:
3126 case R_PPC_GOT_TPREL16_HA
:
3128 info
->flags
|= DF_STATIC_TLS
;
3129 tls_type
= TLS_TLS
| TLS_TPREL
;
3132 case R_PPC_GOT_DTPREL16
:
3133 case R_PPC_GOT_DTPREL16_LO
:
3134 case R_PPC_GOT_DTPREL16_HI
:
3135 case R_PPC_GOT_DTPREL16_HA
:
3136 tls_type
= TLS_TLS
| TLS_DTPREL
;
3138 sec
->has_tls_reloc
= 1;
3141 /* GOT16 relocations */
3143 case R_PPC_GOT16_LO
:
3144 case R_PPC_GOT16_HI
:
3145 case R_PPC_GOT16_HA
:
3146 /* This symbol requires a global offset table entry. */
3147 if (htab
->got
== NULL
)
3149 if (htab
->elf
.dynobj
== NULL
)
3150 htab
->elf
.dynobj
= abfd
;
3151 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3156 h
->got
.refcount
+= 1;
3157 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
3160 /* This is a global offset table entry for a local symbol. */
3161 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
3165 /* Indirect .sdata relocation. */
3166 case R_PPC_EMB_SDAI16
:
3169 bad_shared_reloc (abfd
, r_type
);
3172 if (htab
->sdata
[0].section
== NULL
3173 && !ppc_elf_create_linker_section (abfd
, info
, 0,
3176 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[0],
3181 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3182 h
->non_got_ref
= TRUE
;
3186 /* Indirect .sdata2 relocation. */
3187 case R_PPC_EMB_SDA2I16
:
3190 bad_shared_reloc (abfd
, r_type
);
3193 if (htab
->sdata
[1].section
== NULL
3194 && !ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3197 if (!elf_create_pointer_linker_section (abfd
, &htab
->sdata
[1],
3202 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3203 h
->non_got_ref
= TRUE
;
3207 case R_PPC_SDAREL16
:
3210 bad_shared_reloc (abfd
, r_type
);
3213 if (htab
->sdata
[0].sym
== NULL
3214 && !create_sdata_sym (htab
, &htab
->sdata
[0]))
3218 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3219 h
->non_got_ref
= TRUE
;
3223 case R_PPC_EMB_SDA2REL
:
3226 bad_shared_reloc (abfd
, r_type
);
3229 if (htab
->sdata
[1].sym
== NULL
3230 && !create_sdata_sym (htab
, &htab
->sdata
[1]))
3234 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3235 h
->non_got_ref
= TRUE
;
3239 case R_PPC_EMB_SDA21
:
3240 case R_PPC_EMB_RELSDA
:
3243 bad_shared_reloc (abfd
, r_type
);
3246 if (htab
->sdata
[0].sym
== NULL
3247 && !create_sdata_sym (htab
, &htab
->sdata
[0]))
3249 if (htab
->sdata
[1].sym
== NULL
3250 && !create_sdata_sym (htab
, &htab
->sdata
[1]))
3254 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
3255 h
->non_got_ref
= TRUE
;
3259 case R_PPC_EMB_NADDR32
:
3260 case R_PPC_EMB_NADDR16
:
3261 case R_PPC_EMB_NADDR16_LO
:
3262 case R_PPC_EMB_NADDR16_HI
:
3263 case R_PPC_EMB_NADDR16_HA
:
3266 bad_shared_reloc (abfd
, r_type
);
3270 h
->non_got_ref
= TRUE
;
3274 case R_PPC_PLTREL24
:
3275 case R_PPC_PLTREL32
:
3276 case R_PPC_PLT16_LO
:
3277 case R_PPC_PLT16_HI
:
3278 case R_PPC_PLT16_HA
:
3280 fprintf (stderr
, "Reloc requires a PLT entry\n");
3282 /* This symbol requires a procedure linkage table entry. We
3283 actually build the entry in finish_dynamic_symbol,
3284 because this might be a case of linking PIC code without
3285 linking in any dynamic objects, in which case we don't
3286 need to generate a procedure linkage table after all. */
3290 /* It does not make sense to have a procedure linkage
3291 table entry for a local symbol. */
3292 (*_bfd_error_handler
) (_("%B(%A+0x%lx): %s reloc against "
3296 (long) rel
->r_offset
,
3297 ppc_elf_howto_table
[r_type
]->name
);
3298 bfd_set_error (bfd_error_bad_value
);
3305 if (r_type
== R_PPC_PLTREL24
)
3307 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
3308 addend
= rel
->r_addend
;
3311 if (!update_plt_info (abfd
, h
, got2
, addend
))
3316 /* The following relocations don't need to propagate the
3317 relocation if linking a shared object since they are
3318 section relative. */
3320 case R_PPC_SECTOFF_LO
:
3321 case R_PPC_SECTOFF_HI
:
3322 case R_PPC_SECTOFF_HA
:
3323 case R_PPC_DTPREL16
:
3324 case R_PPC_DTPREL16_LO
:
3325 case R_PPC_DTPREL16_HI
:
3326 case R_PPC_DTPREL16_HA
:
3331 case R_PPC_REL16_LO
:
3332 case R_PPC_REL16_HI
:
3333 case R_PPC_REL16_HA
:
3334 ppc_elf_tdata (abfd
)->has_rel16
= 1;
3337 /* These are just markers. */
3339 case R_PPC_EMB_MRKREF
:
3344 /* These should only appear in dynamic objects. */
3346 case R_PPC_GLOB_DAT
:
3347 case R_PPC_JMP_SLOT
:
3348 case R_PPC_RELATIVE
:
3351 /* These aren't handled yet. We'll report an error later. */
3353 case R_PPC_EMB_RELSEC16
:
3354 case R_PPC_EMB_RELST_LO
:
3355 case R_PPC_EMB_RELST_HI
:
3356 case R_PPC_EMB_RELST_HA
:
3357 case R_PPC_EMB_BIT_FLD
:
3360 /* This refers only to functions defined in the shared library. */
3361 case R_PPC_LOCAL24PC
:
3362 if (h
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
3364 htab
->plt_type
= PLT_OLD
;
3365 htab
->old_bfd
= abfd
;
3369 /* This relocation describes the C++ object vtable hierarchy.
3370 Reconstruct it for later use during GC. */
3371 case R_PPC_GNU_VTINHERIT
:
3372 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3376 /* This relocation describes which C++ vtable entries are actually
3377 used. Record for later use during GC. */
3378 case R_PPC_GNU_VTENTRY
:
3379 BFD_ASSERT (h
!= NULL
);
3381 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3385 /* We shouldn't really be seeing these. */
3388 info
->flags
|= DF_STATIC_TLS
;
3392 case R_PPC_DTPMOD32
:
3393 case R_PPC_DTPREL32
:
3397 case R_PPC_TPREL16_LO
:
3398 case R_PPC_TPREL16_HI
:
3399 case R_PPC_TPREL16_HA
:
3401 info
->flags
|= DF_STATIC_TLS
;
3407 && (sec
->flags
& SEC_CODE
) != 0
3408 && (info
->shared
|| info
->pie
)
3409 && htab
->plt_type
== PLT_UNSET
)
3411 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3412 the start of a function, which assembles to a REL32
3413 reference to .got2. If we detect one of these, then
3414 force the old PLT layout because the linker cannot
3415 reliably deduce the GOT pointer value needed for
3419 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
3423 htab
->plt_type
= PLT_OLD
;
3424 htab
->old_bfd
= abfd
;
3427 if (h
== NULL
|| h
== htab
->elf
.hgot
)
3433 case R_PPC_REL14_BRTAKEN
:
3434 case R_PPC_REL14_BRNTAKEN
:
3437 if (h
== htab
->elf
.hgot
)
3439 if (htab
->plt_type
== PLT_UNSET
)
3441 htab
->plt_type
= PLT_OLD
;
3442 htab
->old_bfd
= abfd
;
3451 case R_PPC_ADDR16_LO
:
3452 case R_PPC_ADDR16_HI
:
3453 case R_PPC_ADDR16_HA
:
3455 case R_PPC_ADDR14_BRTAKEN
:
3456 case R_PPC_ADDR14_BRNTAKEN
:
3460 if (h
!= NULL
&& !info
->shared
)
3462 /* We may need a plt entry if the symbol turns out to be
3463 a function defined in a dynamic object. */
3464 if (!update_plt_info (abfd
, h
, NULL
, 0))
3467 /* We may need a copy reloc too. */
3472 /* If we are creating a shared library, and this is a reloc
3473 against a global symbol, or a non PC relative reloc
3474 against a local symbol, then we need to copy the reloc
3475 into the shared library. However, if we are linking with
3476 -Bsymbolic, we do not need to copy a reloc against a
3477 global symbol which is defined in an object we are
3478 including in the link (i.e., DEF_REGULAR is set). At
3479 this point we have not seen all the input files, so it is
3480 possible that DEF_REGULAR is not set now but will be set
3481 later (it is never cleared). In case of a weak definition,
3482 DEF_REGULAR may be cleared later by a strong definition in
3483 a shared library. We account for that possibility below by
3484 storing information in the dyn_relocs field of the hash
3485 table entry. A similar situation occurs when creating
3486 shared libraries and symbol visibility changes render the
3489 If on the other hand, we are creating an executable, we
3490 may need to keep relocations for symbols satisfied by a
3491 dynamic library if we manage to avoid copy relocs for the
3494 && (MUST_BE_DYN_RELOC (r_type
)
3496 && (! info
->symbolic
3497 || h
->root
.type
== bfd_link_hash_defweak
3498 || !h
->def_regular
))))
3499 || (ELIMINATE_COPY_RELOCS
3502 && (h
->root
.type
== bfd_link_hash_defweak
3503 || !h
->def_regular
)))
3505 struct ppc_elf_dyn_relocs
*p
;
3506 struct ppc_elf_dyn_relocs
**head
;
3510 "ppc_elf_check_relocs needs to "
3511 "create relocation for %s\n",
3512 (h
&& h
->root
.root
.string
3513 ? h
->root
.root
.string
: "<unknown>"));
3519 name
= (bfd_elf_string_from_elf_section
3521 elf_elfheader (abfd
)->e_shstrndx
,
3522 elf_section_data (sec
)->rel_hdr
.sh_name
));
3526 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
3527 && strcmp (bfd_get_section_name (abfd
, sec
),
3530 if (htab
->elf
.dynobj
== NULL
)
3531 htab
->elf
.dynobj
= abfd
;
3532 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
3537 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
3538 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
3539 | SEC_ALLOC
| SEC_LOAD
);
3540 sreloc
= bfd_make_section_with_flags (htab
->elf
.dynobj
,
3544 || ! bfd_set_section_alignment (htab
->elf
.dynobj
,
3548 elf_section_data (sec
)->sreloc
= sreloc
;
3551 /* If this is a global symbol, we count the number of
3552 relocations we need for this symbol. */
3555 head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
3559 /* Track dynamic relocs needed for local syms too.
3560 We really need local syms available to do this
3566 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
3571 vpp
= &elf_section_data (s
)->local_dynrel
;
3572 head
= (struct ppc_elf_dyn_relocs
**) vpp
;
3576 if (p
== NULL
|| p
->sec
!= sec
)
3578 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
3589 if (!MUST_BE_DYN_RELOC (r_type
))
3601 /* Merge object attributes from IBFD into OBFD. Raise an error if
3602 there are conflicting attributes. */
3604 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
3606 obj_attribute
*in_attr
, *in_attrs
;
3607 obj_attribute
*out_attr
, *out_attrs
;
3609 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
3611 /* This is the first object. Copy the attributes. */
3612 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
3614 /* Use the Tag_null value to indicate the attributes have been
3616 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
3621 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
3622 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
3624 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3625 non-conflicting ones. */
3626 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
3627 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
3628 if (in_attr
->i
!= out_attr
->i
)
3631 if (out_attr
->i
== 0)
3632 out_attr
->i
= in_attr
->i
;
3633 else if (in_attr
->i
== 0)
3635 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
3637 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
3638 else if (out_attr
->i
== 2 && in_attr
->i
== 1)
3640 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
3641 else if (in_attr
->i
> 2)
3643 (_("Warning: %B uses unknown floating point ABI %d"), ibfd
,
3647 (_("Warning: %B uses unknown floating point ABI %d"), obfd
,
3651 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3652 merge non-conflicting ones. */
3653 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
3654 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
3655 if (in_attr
->i
!= out_attr
->i
)
3657 const char *in_abi
= NULL
, *out_abi
= NULL
;
3661 case 1: in_abi
= "generic"; break;
3662 case 2: in_abi
= "AltiVec"; break;
3663 case 3: in_abi
= "SPE"; break;
3666 switch (out_attr
->i
)
3668 case 1: out_abi
= "generic"; break;
3669 case 2: out_abi
= "AltiVec"; break;
3670 case 3: out_abi
= "SPE"; break;
3674 if (out_attr
->i
== 0)
3675 out_attr
->i
= in_attr
->i
;
3676 else if (in_attr
->i
== 0)
3678 /* For now, allow generic to transition to AltiVec or SPE
3679 without a warning. If GCC marked files with their stack
3680 alignment and used don't-care markings for files which are
3681 not affected by the vector ABI, we could warn about this
3683 else if (out_attr
->i
== 1)
3684 out_attr
->i
= in_attr
->i
;
3685 else if (in_attr
->i
== 1)
3687 else if (in_abi
== NULL
)
3689 (_("Warning: %B uses unknown vector ABI %d"), ibfd
,
3691 else if (out_abi
== NULL
)
3693 (_("Warning: %B uses unknown vector ABI %d"), obfd
,
3697 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3698 ibfd
, obfd
, in_abi
, out_abi
);
3701 /* Merge Tag_compatibility attributes and any common GNU ones. */
3702 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
3707 /* Merge backend specific data from an object file to the output
3708 object file when linking. */
3711 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3717 if (!is_ppc_elf_target (ibfd
->xvec
)
3718 || !is_ppc_elf_target (obfd
->xvec
))
3721 /* Check if we have the same endianess. */
3722 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
3725 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
3728 new_flags
= elf_elfheader (ibfd
)->e_flags
;
3729 old_flags
= elf_elfheader (obfd
)->e_flags
;
3730 if (!elf_flags_init (obfd
))
3732 /* First call, no flags set. */
3733 elf_flags_init (obfd
) = TRUE
;
3734 elf_elfheader (obfd
)->e_flags
= new_flags
;
3737 /* Compatible flags are ok. */
3738 else if (new_flags
== old_flags
)
3741 /* Incompatible flags. */
3744 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3745 to be linked with either. */
3747 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
3748 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
3751 (*_bfd_error_handler
)
3752 (_("%B: compiled with -mrelocatable and linked with "
3753 "modules compiled normally"), ibfd
);
3755 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
3756 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
3759 (*_bfd_error_handler
)
3760 (_("%B: compiled normally and linked with "
3761 "modules compiled with -mrelocatable"), ibfd
);
3764 /* The output is -mrelocatable-lib iff both the input files are. */
3765 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
3766 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
3768 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3769 but each input file is either -mrelocatable or -mrelocatable-lib. */
3770 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
3771 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
3772 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
3773 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
3775 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3776 any module uses it. */
3777 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
3779 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
3780 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
3782 /* Warn about any other mismatches. */
3783 if (new_flags
!= old_flags
)
3786 (*_bfd_error_handler
)
3787 (_("%B: uses different e_flags (0x%lx) fields "
3788 "than previous modules (0x%lx)"),
3789 ibfd
, (long) new_flags
, (long) old_flags
);
3794 bfd_set_error (bfd_error_bad_value
);
3802 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3803 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3805 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3806 struct bfd_link_info
*info
,
3807 enum ppc_elf_plt_type plt_style
,
3810 struct ppc_elf_link_hash_table
*htab
;
3813 htab
= ppc_elf_hash_table (info
);
3815 if (htab
->plt_type
== PLT_UNSET
)
3817 if (plt_style
== PLT_OLD
)
3818 htab
->plt_type
= PLT_OLD
;
3822 enum ppc_elf_plt_type plt_type
= plt_style
;
3824 /* Look through the reloc flags left by ppc_elf_check_relocs.
3825 Use the old style bss plt if a file makes plt calls
3826 without using the new relocs, and if ld isn't given
3827 --secure-plt and we never see REL16 relocs. */
3828 if (plt_type
== PLT_UNSET
)
3830 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
3831 if (is_ppc_elf_target (ibfd
->xvec
))
3833 if (ppc_elf_tdata (ibfd
)->has_rel16
)
3835 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
3838 htab
->old_bfd
= ibfd
;
3842 htab
->plt_type
= plt_type
;
3845 if (htab
->plt_type
== PLT_OLD
&& plt_style
== PLT_NEW
)
3846 info
->callbacks
->info (_("Using bss-plt due to %B"), htab
->old_bfd
);
3848 htab
->emit_stub_syms
= emit_stub_syms
;
3850 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
3852 if (htab
->plt_type
== PLT_NEW
)
3854 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
3855 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3857 /* The new PLT is a loaded section. */
3858 if (htab
->plt
!= NULL
3859 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
3862 /* The new GOT is not executable. */
3863 if (htab
->got
!= NULL
3864 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
3869 /* Stop an unused .glink section from affecting .text alignment. */
3870 if (htab
->glink
!= NULL
3871 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
3874 return htab
->plt_type
== PLT_NEW
;
3877 /* Return the section that should be marked against GC for a given
3881 ppc_elf_gc_mark_hook (asection
*sec
,
3882 struct bfd_link_info
*info
,
3883 Elf_Internal_Rela
*rel
,
3884 struct elf_link_hash_entry
*h
,
3885 Elf_Internal_Sym
*sym
)
3888 switch (ELF32_R_TYPE (rel
->r_info
))
3890 case R_PPC_GNU_VTINHERIT
:
3891 case R_PPC_GNU_VTENTRY
:
3895 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
3898 /* Update the got, plt and dynamic reloc reference counts for the
3899 section being removed. */
3902 ppc_elf_gc_sweep_hook (bfd
*abfd
,
3903 struct bfd_link_info
*info
,
3905 const Elf_Internal_Rela
*relocs
)
3907 struct ppc_elf_link_hash_table
*htab
;
3908 Elf_Internal_Shdr
*symtab_hdr
;
3909 struct elf_link_hash_entry
**sym_hashes
;
3910 bfd_signed_vma
*local_got_refcounts
;
3911 const Elf_Internal_Rela
*rel
, *relend
;
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_tdata (abfd
)->symtab_hdr
;
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 htab
->tlsld_got
.refcount
-= 1;
3963 case R_PPC_GOT_TLSGD16
:
3964 case R_PPC_GOT_TLSGD16_LO
:
3965 case R_PPC_GOT_TLSGD16_HI
:
3966 case R_PPC_GOT_TLSGD16_HA
:
3967 case R_PPC_GOT_TPREL16
:
3968 case R_PPC_GOT_TPREL16_LO
:
3969 case R_PPC_GOT_TPREL16_HI
:
3970 case R_PPC_GOT_TPREL16_HA
:
3971 case R_PPC_GOT_DTPREL16
:
3972 case R_PPC_GOT_DTPREL16_LO
:
3973 case R_PPC_GOT_DTPREL16_HI
:
3974 case R_PPC_GOT_DTPREL16_HA
:
3976 case R_PPC_GOT16_LO
:
3977 case R_PPC_GOT16_HI
:
3978 case R_PPC_GOT16_HA
:
3981 if (h
->got
.refcount
> 0)
3984 else if (local_got_refcounts
!= NULL
)
3986 if (local_got_refcounts
[r_symndx
] > 0)
3987 local_got_refcounts
[r_symndx
]--;
3993 case R_PPC_REL14_BRTAKEN
:
3994 case R_PPC_REL14_BRNTAKEN
:
3996 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4003 case R_PPC_ADDR16_LO
:
4004 case R_PPC_ADDR16_HI
:
4005 case R_PPC_ADDR16_HA
:
4007 case R_PPC_ADDR14_BRTAKEN
:
4008 case R_PPC_ADDR14_BRNTAKEN
:
4015 case R_PPC_PLTREL24
:
4016 case R_PPC_PLTREL32
:
4017 case R_PPC_PLT16_LO
:
4018 case R_PPC_PLT16_HI
:
4019 case R_PPC_PLT16_HA
:
4022 bfd_vma addend
= r_type
== R_PPC_PLTREL24
? rel
->r_addend
: 0;
4023 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
4024 if (ent
->plt
.refcount
> 0)
4025 ent
->plt
.refcount
-= 1;
4036 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
4039 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
4041 struct ppc_elf_link_hash_table
*htab
;
4043 htab
= ppc_elf_hash_table (info
);
4044 if (htab
->plt_type
== PLT_NEW
4045 && htab
->plt
!= NULL
4046 && htab
->plt
->output_section
!= NULL
)
4048 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
4049 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
4052 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4053 FALSE
, FALSE
, TRUE
);
4054 return _bfd_elf_tls_setup (obfd
, info
);
4057 /* Run through all the TLS relocs looking for optimization
4061 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
4062 struct bfd_link_info
*info
)
4066 struct ppc_elf_link_hash_table
*htab
;
4068 if (info
->relocatable
|| info
->shared
)
4071 htab
= ppc_elf_hash_table (info
);
4072 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4074 Elf_Internal_Sym
*locsyms
= NULL
;
4075 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
4077 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4078 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
4080 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
4081 int expecting_tls_get_addr
;
4083 /* Read the relocations. */
4084 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
4086 if (relstart
== NULL
)
4089 expecting_tls_get_addr
= 0;
4090 relend
= relstart
+ sec
->reloc_count
;
4091 for (rel
= relstart
; rel
< relend
; rel
++)
4093 enum elf_ppc_reloc_type r_type
;
4094 unsigned long r_symndx
;
4095 struct elf_link_hash_entry
*h
= NULL
;
4097 char tls_set
, tls_clear
;
4098 bfd_boolean is_local
;
4100 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4101 if (r_symndx
>= symtab_hdr
->sh_info
)
4103 struct elf_link_hash_entry
**sym_hashes
;
4105 sym_hashes
= elf_sym_hashes (ibfd
);
4106 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4107 while (h
->root
.type
== bfd_link_hash_indirect
4108 || h
->root
.type
== bfd_link_hash_warning
)
4109 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4117 r_type
= ELF32_R_TYPE (rel
->r_info
);
4120 case R_PPC_GOT_TLSLD16
:
4121 case R_PPC_GOT_TLSLD16_LO
:
4122 case R_PPC_GOT_TLSLD16_HI
:
4123 case R_PPC_GOT_TLSLD16_HA
:
4124 /* These relocs should never be against a symbol
4125 defined in a shared lib. Leave them alone if
4126 that turns out to be the case. */
4127 expecting_tls_get_addr
= 0;
4128 htab
->tlsld_got
.refcount
-= 1;
4135 expecting_tls_get_addr
= 1;
4138 case R_PPC_GOT_TLSGD16
:
4139 case R_PPC_GOT_TLSGD16_LO
:
4140 case R_PPC_GOT_TLSGD16_HI
:
4141 case R_PPC_GOT_TLSGD16_HA
:
4147 tls_set
= TLS_TLS
| TLS_TPRELGD
;
4149 expecting_tls_get_addr
= 1;
4152 case R_PPC_GOT_TPREL16
:
4153 case R_PPC_GOT_TPREL16_LO
:
4154 case R_PPC_GOT_TPREL16_HI
:
4155 case R_PPC_GOT_TPREL16_HA
:
4156 expecting_tls_get_addr
= 0;
4161 tls_clear
= TLS_TPREL
;
4168 case R_PPC_REL14_BRTAKEN
:
4169 case R_PPC_REL14_BRNTAKEN
:
4171 if (expecting_tls_get_addr
4173 && h
== htab
->tls_get_addr
)
4175 struct plt_entry
*ent
= find_plt_ent (h
, NULL
, 0);
4176 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
4177 ent
->plt
.refcount
-= 1;
4179 expecting_tls_get_addr
= 0;
4183 expecting_tls_get_addr
= 0;
4191 /* We managed to get rid of a got entry. */
4192 if (h
->got
.refcount
> 0)
4193 h
->got
.refcount
-= 1;
4195 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
4199 Elf_Internal_Sym
*sym
;
4200 bfd_signed_vma
*lgot_refs
;
4203 if (locsyms
== NULL
)
4205 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4206 if (locsyms
== NULL
)
4207 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
4208 symtab_hdr
->sh_info
,
4209 0, NULL
, NULL
, NULL
);
4210 if (locsyms
== NULL
)
4212 if (elf_section_data (sec
)->relocs
!= relstart
)
4217 sym
= locsyms
+ r_symndx
;
4218 lgot_refs
= elf_local_got_refcounts (ibfd
);
4219 if (lgot_refs
== NULL
)
4223 /* We managed to get rid of a got entry. */
4224 if (lgot_refs
[r_symndx
] > 0)
4225 lgot_refs
[r_symndx
] -= 1;
4227 lgot_masks
= (char *) (lgot_refs
+ symtab_hdr
->sh_info
);
4228 tls_mask
= &lgot_masks
[r_symndx
];
4231 *tls_mask
|= tls_set
;
4232 *tls_mask
&= ~tls_clear
;
4235 if (elf_section_data (sec
)->relocs
!= relstart
)
4240 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
4242 if (!info
->keep_memory
)
4245 symtab_hdr
->contents
= (unsigned char *) locsyms
;
4251 /* Adjust a symbol defined by a dynamic object and referenced by a
4252 regular object. The current definition is in some section of the
4253 dynamic object, but we're not including those sections. We have to
4254 change the definition to something the rest of the link can
4258 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4259 struct elf_link_hash_entry
*h
)
4261 struct ppc_elf_link_hash_table
*htab
;
4265 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4266 h
->root
.root
.string
);
4269 /* Make sure we know what is going on here. */
4270 htab
= ppc_elf_hash_table (info
);
4271 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
4273 || h
->u
.weakdef
!= NULL
4276 && !h
->def_regular
)));
4278 /* Deal with function syms. */
4279 if (h
->type
== STT_FUNC
4282 /* Clear procedure linkage table information for any symbol that
4283 won't need a .plt entry. */
4284 struct plt_entry
*ent
;
4285 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4286 if (ent
->plt
.refcount
> 0)
4289 || SYMBOL_CALLS_LOCAL (info
, h
)
4290 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4291 && h
->root
.type
== bfd_link_hash_undefweak
))
4293 /* A PLT entry is not required/allowed when:
4295 1. We are not using ld.so; because then the PLT entry
4296 can't be set up, so we can't use one. In this case,
4297 ppc_elf_adjust_dynamic_symbol won't even be called.
4299 2. GC has rendered the entry unused.
4301 3. We know for certain that a call to this symbol
4302 will go to this object, or will remain undefined. */
4303 h
->plt
.plist
= NULL
;
4309 h
->plt
.plist
= NULL
;
4311 /* If this is a weak symbol, and there is a real definition, the
4312 processor independent code will have arranged for us to see the
4313 real definition first, and we can just use the same value. */
4314 if (h
->u
.weakdef
!= NULL
)
4316 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4317 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4318 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4319 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4320 if (ELIMINATE_COPY_RELOCS
)
4321 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
4325 /* This is a reference to a symbol defined by a dynamic object which
4326 is not a function. */
4328 /* If we are creating a shared library, we must presume that the
4329 only references to the symbol are via the global offset table.
4330 For such cases we need not do anything here; the relocations will
4331 be handled correctly by relocate_section. */
4335 /* If there are no references to this symbol that do not use the
4336 GOT, we don't need to generate a copy reloc. */
4337 if (!h
->non_got_ref
)
4340 /* If we didn't find any dynamic relocs in read-only sections, then
4341 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4342 We can't do this if there are any small data relocations. This
4343 doesn't work on VxWorks, where we can not have dynamic
4344 relocations (other than copy and jump slot relocations) in an
4346 if (ELIMINATE_COPY_RELOCS
4347 && !ppc_elf_hash_entry (h
)->has_sda_refs
4348 && !htab
->is_vxworks
)
4350 struct ppc_elf_dyn_relocs
*p
;
4351 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4353 s
= p
->sec
->output_section
;
4354 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
4367 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
4368 h
->root
.root
.string
);
4372 /* We must allocate the symbol in our .dynbss section, which will
4373 become part of the .bss section of the executable. There will be
4374 an entry for this symbol in the .dynsym section. The dynamic
4375 object will contain position independent code, so all references
4376 from the dynamic object to this symbol will go through the global
4377 offset table. The dynamic linker will use the .dynsym entry to
4378 determine the address it must put in the global offset table, so
4379 both the dynamic object and the regular object will refer to the
4380 same memory location for the variable.
4382 Of course, if the symbol is referenced using SDAREL relocs, we
4383 must instead allocate it in .sbss. */
4385 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4389 BFD_ASSERT (s
!= NULL
);
4391 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4392 copy the initial value out of the dynamic object and into the
4393 runtime process image. We need to remember the offset into the
4394 .rela.bss section we are going to use. */
4395 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4399 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4400 srel
= htab
->relsbss
;
4402 srel
= htab
->relbss
;
4403 BFD_ASSERT (srel
!= NULL
);
4404 srel
->size
+= sizeof (Elf32_External_Rela
);
4408 return _bfd_elf_adjust_dynamic_copy (h
, s
);
4411 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4412 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4413 specifying the addend on the plt relocation. For -fpic code, the sym
4414 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4415 xxxxxxxx.got2.plt_pic32.<callee>. */
4418 add_stub_sym (struct plt_entry
*ent
,
4419 struct elf_link_hash_entry
*h
,
4420 struct bfd_link_info
*info
)
4422 struct elf_link_hash_entry
*sh
;
4423 size_t len1
, len2
, len3
;
4426 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
4428 if (info
->shared
|| info
->pie
)
4429 stub
= ".plt_pic32.";
4431 stub
= ".plt_call32.";
4433 len1
= strlen (h
->root
.root
.string
);
4434 len2
= strlen (stub
);
4437 len3
= strlen (ent
->sec
->name
);
4438 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
4441 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
4443 memcpy (name
+ 8, ent
->sec
->name
, len3
);
4444 memcpy (name
+ 8 + len3
, stub
, len2
);
4445 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
4446 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
4449 if (sh
->root
.type
== bfd_link_hash_new
)
4451 sh
->root
.type
= bfd_link_hash_defined
;
4452 sh
->root
.u
.def
.section
= htab
->glink
;
4453 sh
->root
.u
.def
.value
= ent
->glink_offset
;
4454 sh
->ref_regular
= 1;
4455 sh
->def_regular
= 1;
4456 sh
->ref_regular_nonweak
= 1;
4457 sh
->forced_local
= 1;
4463 /* Allocate NEED contiguous space in .got, and return the offset.
4464 Handles allocation of the got header when crossing 32k. */
4467 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
4470 unsigned int max_before_header
;
4472 if (htab
->plt_type
== PLT_VXWORKS
)
4474 where
= htab
->got
->size
;
4475 htab
->got
->size
+= need
;
4479 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
4480 if (need
<= htab
->got_gap
)
4482 where
= max_before_header
- htab
->got_gap
;
4483 htab
->got_gap
-= need
;
4487 if (htab
->got
->size
+ need
> max_before_header
4488 && htab
->got
->size
<= max_before_header
)
4490 htab
->got_gap
= max_before_header
- htab
->got
->size
;
4491 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
4493 where
= htab
->got
->size
;
4494 htab
->got
->size
+= need
;
4500 /* Allocate space in associated reloc sections for dynamic relocs. */
4503 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
4505 struct bfd_link_info
*info
= inf
;
4506 struct ppc_elf_link_hash_entry
*eh
;
4507 struct ppc_elf_link_hash_table
*htab
;
4508 struct ppc_elf_dyn_relocs
*p
;
4510 if (h
->root
.type
== bfd_link_hash_indirect
)
4513 if (h
->root
.type
== bfd_link_hash_warning
)
4514 /* When warning symbols are created, they **replace** the "real"
4515 entry in the hash table, thus we never get to see the real
4516 symbol in a hash traversal. So look at it now. */
4517 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4519 htab
= ppc_elf_hash_table (info
);
4520 if (htab
->elf
.dynamic_sections_created
)
4522 struct plt_entry
*ent
;
4523 bfd_boolean doneone
= FALSE
;
4524 bfd_vma plt_offset
= 0, glink_offset
= 0;
4526 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4527 if (ent
->plt
.refcount
> 0)
4529 /* Make sure this symbol is output as a dynamic symbol. */
4530 if (h
->dynindx
== -1
4531 && !h
->forced_local
)
4533 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4538 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
4540 asection
*s
= htab
->plt
;
4542 if (htab
->plt_type
== PLT_NEW
)
4546 plt_offset
= s
->size
;
4549 ent
->plt
.offset
= plt_offset
;
4552 if (!doneone
|| info
->shared
|| info
->pie
)
4554 glink_offset
= s
->size
;
4555 s
->size
+= GLINK_ENTRY_SIZE
;
4561 h
->root
.u
.def
.section
= s
;
4562 h
->root
.u
.def
.value
= glink_offset
;
4564 ent
->glink_offset
= glink_offset
;
4566 if (htab
->emit_stub_syms
4567 && !add_stub_sym (ent
, h
, info
))
4574 /* If this is the first .plt entry, make room
4575 for the special first entry. */
4577 s
->size
+= htab
->plt_initial_entry_size
;
4579 /* The PowerPC PLT is actually composed of two
4580 parts, the first part is 2 words (for a load
4581 and a jump), and then there is a remaining
4582 word available at the end. */
4583 plt_offset
= (htab
->plt_initial_entry_size
4584 + (htab
->plt_slot_size
4586 - htab
->plt_initial_entry_size
)
4587 / htab
->plt_entry_size
)));
4589 /* If this symbol is not defined in a regular
4590 file, and we are not generating a shared
4591 library, then set the symbol to this location
4592 in the .plt. This is required to make
4593 function pointers compare as equal between
4594 the normal executable and the shared library. */
4598 h
->root
.u
.def
.section
= s
;
4599 h
->root
.u
.def
.value
= plt_offset
;
4602 /* Make room for this entry. */
4603 s
->size
+= htab
->plt_entry_size
;
4604 /* After the 8192nd entry, room for two entries
4606 if (htab
->plt_type
== PLT_OLD
4607 && (s
->size
- htab
->plt_initial_entry_size
)
4608 / htab
->plt_entry_size
4609 > PLT_NUM_SINGLE_ENTRIES
)
4610 s
->size
+= htab
->plt_entry_size
;
4612 ent
->plt
.offset
= plt_offset
;
4615 /* We also need to make an entry in the .rela.plt section. */
4618 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
4620 if (htab
->plt_type
== PLT_VXWORKS
)
4622 /* Allocate space for the unloaded relocations. */
4626 == (bfd_vma
) htab
->plt_initial_entry_size
)
4628 htab
->srelplt2
->size
4629 += sizeof (Elf32_External_Rela
)
4630 * VXWORKS_PLTRESOLVE_RELOCS
;
4633 htab
->srelplt2
->size
4634 += sizeof (Elf32_External_Rela
)
4635 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
;
4638 /* Every PLT entry has an associated GOT entry in
4640 htab
->sgotplt
->size
+= 4;
4646 ent
->plt
.offset
= (bfd_vma
) -1;
4649 ent
->plt
.offset
= (bfd_vma
) -1;
4653 h
->plt
.plist
= NULL
;
4659 h
->plt
.plist
= NULL
;
4663 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4664 if (eh
->elf
.got
.refcount
> 0)
4666 /* Make sure this symbol is output as a dynamic symbol. */
4667 if (eh
->elf
.dynindx
== -1
4668 && !eh
->elf
.forced_local
)
4670 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
4674 if (eh
->tls_mask
== (TLS_TLS
| TLS_LD
)
4675 && !eh
->elf
.def_dynamic
)
4676 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4677 eh
->elf
.got
.offset
= (bfd_vma
) -1;
4681 unsigned int need
= 0;
4682 if ((eh
->tls_mask
& TLS_TLS
) != 0)
4684 if ((eh
->tls_mask
& TLS_LD
) != 0)
4686 if ((eh
->tls_mask
& TLS_GD
) != 0)
4688 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
4690 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
4695 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
4696 dyn
= htab
->elf
.dynamic_sections_created
;
4698 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
4699 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
4700 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
4702 /* All the entries we allocated need relocs.
4703 Except LD only needs one. */
4704 if ((eh
->tls_mask
& TLS_LD
) != 0)
4706 htab
->relgot
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
4711 eh
->elf
.got
.offset
= (bfd_vma
) -1;
4713 if (eh
->dyn_relocs
== NULL
)
4716 /* In the shared -Bsymbolic case, discard space allocated for
4717 dynamic pc-relative relocs against symbols which turn out to be
4718 defined in regular objects. For the normal shared case, discard
4719 space for relocs that have become local due to symbol visibility
4724 /* Relocs that use pc_count are those that appear on a call insn,
4725 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4726 generated via assembly. We want calls to protected symbols to
4727 resolve directly to the function rather than going via the plt.
4728 If people want function pointer comparisons to work as expected
4729 then they should avoid writing weird assembly. */
4730 if (SYMBOL_CALLS_LOCAL (info
, h
))
4732 struct ppc_elf_dyn_relocs
**pp
;
4734 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
4736 p
->count
-= p
->pc_count
;
4745 /* Also discard relocs on undefined weak syms with non-default
4747 if (eh
->dyn_relocs
!= NULL
4748 && h
->root
.type
== bfd_link_hash_undefweak
)
4750 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
4751 eh
->dyn_relocs
= NULL
;
4753 /* Make sure undefined weak symbols are output as a dynamic
4755 else if (h
->dynindx
== -1
4756 && !h
->forced_local
)
4758 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4763 else if (ELIMINATE_COPY_RELOCS
)
4765 /* For the non-shared case, discard space for relocs against
4766 symbols which turn out to need copy relocs or are not
4773 /* Make sure this symbol is output as a dynamic symbol.
4774 Undefined weak syms won't yet be marked as dynamic. */
4775 if (h
->dynindx
== -1
4776 && !h
->forced_local
)
4778 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4782 /* If that succeeded, we know we'll be keeping all the
4784 if (h
->dynindx
!= -1)
4788 eh
->dyn_relocs
= NULL
;
4793 /* Finally, allocate space. */
4794 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4796 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
4797 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
4803 /* Find any dynamic relocs that apply to read-only sections. */
4806 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *info
)
4808 struct ppc_elf_dyn_relocs
*p
;
4810 if (h
->root
.type
== bfd_link_hash_indirect
)
4813 if (h
->root
.type
== bfd_link_hash_warning
)
4814 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4816 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4818 asection
*s
= p
->sec
->output_section
;
4821 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
4822 == (SEC_READONLY
| SEC_ALLOC
)))
4824 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
4826 /* Not an error, just cut short the traversal. */
4833 /* Set the sizes of the dynamic sections. */
4836 ppc_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4837 struct bfd_link_info
*info
)
4839 struct ppc_elf_link_hash_table
*htab
;
4845 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
4848 htab
= ppc_elf_hash_table (info
);
4849 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
4851 if (elf_hash_table (info
)->dynamic_sections_created
)
4853 /* Set the contents of the .interp section to the interpreter. */
4854 if (info
->executable
)
4856 s
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".interp");
4857 BFD_ASSERT (s
!= NULL
);
4858 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
4859 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
4863 if (htab
->plt_type
== PLT_OLD
)
4864 htab
->got_header_size
= 16;
4865 else if (htab
->plt_type
== PLT_NEW
)
4866 htab
->got_header_size
= 12;
4868 /* Set up .got offsets for local syms, and space for local dynamic
4870 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4872 bfd_signed_vma
*local_got
;
4873 bfd_signed_vma
*end_local_got
;
4875 bfd_size_type locsymcount
;
4876 Elf_Internal_Shdr
*symtab_hdr
;
4878 if (!is_ppc_elf_target (ibfd
->xvec
))
4881 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
4883 struct ppc_elf_dyn_relocs
*p
;
4885 for (p
= ((struct ppc_elf_dyn_relocs
*)
4886 elf_section_data (s
)->local_dynrel
);
4890 if (!bfd_is_abs_section (p
->sec
)
4891 && bfd_is_abs_section (p
->sec
->output_section
))
4893 /* Input section has been discarded, either because
4894 it is a copy of a linkonce section or due to
4895 linker script /DISCARD/, so we'll be discarding
4898 else if (p
->count
!= 0)
4900 elf_section_data (p
->sec
)->sreloc
->size
4901 += p
->count
* sizeof (Elf32_External_Rela
);
4902 if ((p
->sec
->output_section
->flags
4903 & (SEC_READONLY
| SEC_ALLOC
))
4904 == (SEC_READONLY
| SEC_ALLOC
))
4905 info
->flags
|= DF_TEXTREL
;
4910 local_got
= elf_local_got_refcounts (ibfd
);
4914 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
4915 locsymcount
= symtab_hdr
->sh_info
;
4916 end_local_got
= local_got
+ locsymcount
;
4917 lgot_masks
= (char *) end_local_got
;
4918 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
4921 if (*lgot_masks
== (TLS_TLS
| TLS_LD
))
4923 /* If just an LD reloc, we'll just use
4924 htab->tlsld_got.offset. */
4925 htab
->tlsld_got
.refcount
+= 1;
4926 *local_got
= (bfd_vma
) -1;
4930 unsigned int need
= 0;
4931 if ((*lgot_masks
& TLS_TLS
) != 0)
4933 if ((*lgot_masks
& TLS_GD
) != 0)
4935 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
4937 if ((*lgot_masks
& TLS_DTPREL
) != 0)
4942 *local_got
= allocate_got (htab
, need
);
4944 htab
->relgot
->size
+= (need
4945 * (sizeof (Elf32_External_Rela
) / 4));
4949 *local_got
= (bfd_vma
) -1;
4952 if (htab
->tlsld_got
.refcount
> 0)
4954 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
4956 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
4959 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
4961 /* Allocate space for global sym dynamic relocs. */
4962 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
4964 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
4966 unsigned int g_o_t
= 32768;
4968 /* If we haven't allocated the header, do so now. When we get here,
4969 for old plt/got the got size will be 0 to 32764 (not allocated),
4970 or 32780 to 65536 (header allocated). For new plt/got, the
4971 corresponding ranges are 0 to 32768 and 32780 to 65536. */
4972 if (htab
->got
->size
<= 32768)
4974 g_o_t
= htab
->got
->size
;
4975 if (htab
->plt_type
== PLT_OLD
)
4977 htab
->got
->size
+= htab
->got_header_size
;
4980 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
4983 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
4985 htab
->glink_pltresolve
= htab
->glink
->size
;
4986 /* Space for the branch table. */
4987 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
4988 /* Pad out to align the start of PLTresolve. */
4989 htab
->glink
->size
+= -htab
->glink
->size
& 15;
4990 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
4992 if (htab
->emit_stub_syms
)
4994 struct elf_link_hash_entry
*sh
;
4995 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
4996 TRUE
, FALSE
, FALSE
);
4999 if (sh
->root
.type
== bfd_link_hash_new
)
5001 sh
->root
.type
= bfd_link_hash_defined
;
5002 sh
->root
.u
.def
.section
= htab
->glink
;
5003 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
5004 sh
->ref_regular
= 1;
5005 sh
->def_regular
= 1;
5006 sh
->ref_regular_nonweak
= 1;
5007 sh
->forced_local
= 1;
5010 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
5011 TRUE
, FALSE
, FALSE
);
5014 if (sh
->root
.type
== bfd_link_hash_new
)
5016 sh
->root
.type
= bfd_link_hash_defined
;
5017 sh
->root
.u
.def
.section
= htab
->glink
;
5018 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
5019 sh
->ref_regular
= 1;
5020 sh
->def_regular
= 1;
5021 sh
->ref_regular_nonweak
= 1;
5022 sh
->forced_local
= 1;
5028 /* We've now determined the sizes of the various dynamic sections.
5029 Allocate memory for them. */
5031 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5033 bfd_boolean strip_section
= TRUE
;
5035 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5041 || s
== htab
->sgotplt
5043 || s
== htab
->dynbss
5044 || s
== htab
->dynsbss
)
5046 /* We'd like to strip these sections if they aren't needed, but if
5047 we've exported dynamic symbols from them we must leave them.
5048 It's too late to tell BFD to get rid of the symbols. */
5049 if ((s
== htab
->plt
|| s
== htab
->got
) && htab
->elf
.hplt
!= NULL
)
5050 strip_section
= FALSE
;
5051 /* Strip this section if we don't need it; see the
5054 else if (s
== htab
->sdata
[0].section
5055 || s
== htab
->sdata
[1].section
)
5057 /* Strip these too. */
5059 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
5063 /* Remember whether there are any relocation sections. */
5066 /* We use the reloc_count field as a counter if we need
5067 to copy relocs into the output file. */
5073 /* It's not one of our sections, so don't allocate space. */
5077 if (s
->size
== 0 && strip_section
)
5079 /* If we don't need this section, strip it from the
5080 output file. This is mostly to handle .rela.bss and
5081 .rela.plt. We must create both sections in
5082 create_dynamic_sections, because they must be created
5083 before the linker maps input sections to output
5084 sections. The linker does that before
5085 adjust_dynamic_symbol is called, and it is that
5086 function which decides whether anything needs to go
5087 into these sections. */
5088 s
->flags
|= SEC_EXCLUDE
;
5092 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
5095 /* Allocate memory for the section contents. */
5096 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
5097 if (s
->contents
== NULL
)
5101 if (htab
->elf
.dynamic_sections_created
)
5103 /* Add some entries to the .dynamic section. We fill in the
5104 values later, in ppc_elf_finish_dynamic_sections, but we
5105 must add the entries now so that we get the correct size for
5106 the .dynamic section. The DT_DEBUG entry is filled in by the
5107 dynamic linker and used by the debugger. */
5108 #define add_dynamic_entry(TAG, VAL) \
5109 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5111 if (info
->executable
)
5113 if (!add_dynamic_entry (DT_DEBUG
, 0))
5117 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
5119 if (!add_dynamic_entry (DT_PLTGOT
, 0)
5120 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
5121 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
5122 || !add_dynamic_entry (DT_JMPREL
, 0))
5126 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
5128 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
5134 if (!add_dynamic_entry (DT_RELA
, 0)
5135 || !add_dynamic_entry (DT_RELASZ
, 0)
5136 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
5140 /* If any dynamic relocs apply to a read-only section, then we
5141 need a DT_TEXTREL entry. */
5142 if ((info
->flags
& DF_TEXTREL
) == 0)
5143 elf_link_hash_traverse (elf_hash_table (info
), readonly_dynrelocs
,
5146 if ((info
->flags
& DF_TEXTREL
) != 0)
5148 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5152 #undef add_dynamic_entry
5157 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5159 static const int shared_stub_entry
[] =
5161 0x7c0802a6, /* mflr 0 */
5162 0x429f0005, /* bcl 20, 31, .Lxxx */
5163 0x7d6802a6, /* mflr 11 */
5164 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5165 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5166 0x7c0803a6, /* mtlr 0 */
5167 0x7d6903a6, /* mtctr 11 */
5168 0x4e800420, /* bctr */
5171 static const int stub_entry
[] =
5173 0x3d600000, /* lis 11,xxx@ha */
5174 0x396b0000, /* addi 11,11,xxx@l */
5175 0x7d6903a6, /* mtctr 11 */
5176 0x4e800420, /* bctr */
5180 ppc_elf_relax_section (bfd
*abfd
,
5182 struct bfd_link_info
*link_info
,
5187 struct one_fixup
*next
;
5193 Elf_Internal_Shdr
*symtab_hdr
;
5194 bfd_byte
*contents
= NULL
;
5195 Elf_Internal_Sym
*isymbuf
= NULL
;
5196 Elf_Internal_Rela
*internal_relocs
= NULL
;
5197 Elf_Internal_Rela
*irel
, *irelend
;
5198 struct one_fixup
*fixups
= NULL
;
5199 bfd_boolean changed
;
5200 struct ppc_elf_link_hash_table
*htab
;
5201 bfd_size_type trampoff
;
5206 /* Nothing to do if there are no relocations, and no need to do
5207 anything with non-alloc sections. */
5208 if ((isec
->flags
& SEC_ALLOC
) == 0
5209 || (isec
->flags
& SEC_RELOC
) == 0
5210 || isec
->reloc_count
== 0)
5213 trampoff
= (isec
->size
+ 3) & (bfd_vma
) -4;
5214 /* Space for a branch around any trampolines. */
5217 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5219 /* Get a copy of the native relocations. */
5220 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
5221 link_info
->keep_memory
);
5222 if (internal_relocs
== NULL
)
5225 htab
= ppc_elf_hash_table (link_info
);
5226 got2
= bfd_get_section_by_name (abfd
, ".got2");
5228 irelend
= internal_relocs
+ isec
->reloc_count
;
5229 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
5231 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
5232 bfd_vma symaddr
, reladdr
, toff
, roff
;
5234 struct one_fixup
*f
;
5235 size_t insn_offset
= 0;
5236 bfd_vma max_branch_offset
, val
;
5239 unsigned char sym_type
;
5244 case R_PPC_LOCAL24PC
:
5245 case R_PPC_PLTREL24
:
5246 max_branch_offset
= 1 << 25;
5250 case R_PPC_REL14_BRTAKEN
:
5251 case R_PPC_REL14_BRNTAKEN
:
5252 max_branch_offset
= 1 << 15;
5259 /* Get the value of the symbol referred to by the reloc. */
5260 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
5262 /* A local symbol. */
5263 Elf_Internal_Sym
*isym
;
5265 /* Read this BFD's local symbols. */
5266 if (isymbuf
== NULL
)
5268 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5269 if (isymbuf
== NULL
)
5270 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
5271 symtab_hdr
->sh_info
, 0,
5276 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
5277 if (isym
->st_shndx
== SHN_UNDEF
)
5278 continue; /* We can't do anything with undefined symbols. */
5279 else if (isym
->st_shndx
== SHN_ABS
)
5280 tsec
= bfd_abs_section_ptr
;
5281 else if (isym
->st_shndx
== SHN_COMMON
)
5282 tsec
= bfd_com_section_ptr
;
5284 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5286 toff
= isym
->st_value
;
5287 sym_type
= ELF_ST_TYPE (isym
->st_info
);
5291 /* Global symbol handling. */
5293 struct elf_link_hash_entry
*h
;
5295 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
5296 h
= elf_sym_hashes (abfd
)[indx
];
5298 while (h
->root
.type
== bfd_link_hash_indirect
5299 || h
->root
.type
== bfd_link_hash_warning
)
5300 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5304 if (r_type
== R_PPC_PLTREL24
5305 && htab
->plt
!= NULL
)
5307 struct plt_entry
*ent
= find_plt_ent (h
, got2
, irel
->r_addend
);
5311 if (htab
->plt_type
== PLT_NEW
)
5314 toff
= ent
->glink_offset
;
5319 toff
= ent
->plt
.offset
;
5325 else if (h
->root
.type
== bfd_link_hash_defined
5326 || h
->root
.type
== bfd_link_hash_defweak
)
5328 tsec
= h
->root
.u
.def
.section
;
5329 toff
= h
->root
.u
.def
.value
;
5337 /* If the branch and target are in the same section, you have
5338 no hope of adding stubs. We'll error out later should the
5343 /* There probably isn't any reason to handle symbols in
5344 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5345 attribute for a code section, and we are only looking at
5346 branches. However, implement it correctly here as a
5347 reference for other target relax_section functions. */
5348 if (0 && tsec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
5350 /* At this stage in linking, no SEC_MERGE symbol has been
5351 adjusted, so all references to such symbols need to be
5352 passed through _bfd_merged_section_offset. (Later, in
5353 relocate_section, all SEC_MERGE symbols *except* for
5354 section symbols have been adjusted.)
5356 gas may reduce relocations against symbols in SEC_MERGE
5357 sections to a relocation against the section symbol when
5358 the original addend was zero. When the reloc is against
5359 a section symbol we should include the addend in the
5360 offset passed to _bfd_merged_section_offset, since the
5361 location of interest is the original symbol. On the
5362 other hand, an access to "sym+addend" where "sym" is not
5363 a section symbol should not include the addend; Such an
5364 access is presumed to be an offset from "sym"; The
5365 location of interest is just "sym". */
5366 if (sym_type
== STT_SECTION
)
5367 toff
+= irel
->r_addend
;
5369 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
5370 elf_section_data (tsec
)->sec_info
,
5373 if (sym_type
!= STT_SECTION
)
5374 toff
+= irel
->r_addend
;
5376 /* PLTREL24 addends are special. */
5377 else if (r_type
!= R_PPC_PLTREL24
)
5378 toff
+= irel
->r_addend
;
5380 /* Attempted -shared link of non-pic code loses. */
5381 if (tsec
->output_section
== NULL
)
5384 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
5386 roff
= irel
->r_offset
;
5387 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
5389 /* If the branch is in range, no need to do anything. */
5390 if (symaddr
- reladdr
+ max_branch_offset
< 2 * max_branch_offset
)
5393 /* Look for an existing fixup to this address. */
5394 for (f
= fixups
; f
; f
= f
->next
)
5395 if (f
->tsec
== tsec
&& f
->toff
== toff
)
5401 unsigned long stub_rtype
;
5403 val
= trampoff
- roff
;
5404 if (val
>= max_branch_offset
)
5405 /* Oh dear, we can't reach a trampoline. Don't try to add
5406 one. We'll report an error later. */
5409 if (link_info
->shared
)
5411 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
5413 stub_rtype
= R_PPC_RELAX32PC
;
5417 size
= 4 * ARRAY_SIZE (stub_entry
);
5419 stub_rtype
= R_PPC_RELAX32
;
5422 if (R_PPC_RELAX32_PLT
- R_PPC_RELAX32
5423 != R_PPC_RELAX32PC_PLT
- R_PPC_RELAX32PC
)
5425 if (tsec
== htab
->plt
5426 || tsec
== htab
->glink
)
5427 stub_rtype
+= R_PPC_RELAX32_PLT
- R_PPC_RELAX32
;
5429 /* Hijack the old relocation. Since we need two
5430 relocations for this use a "composite" reloc. */
5431 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
5433 irel
->r_offset
= trampoff
+ insn_offset
;
5435 /* Record the fixup so we don't do it again this section. */
5436 f
= bfd_malloc (sizeof (*f
));
5440 f
->trampoff
= trampoff
;
5447 val
= f
->trampoff
- roff
;
5448 if (val
>= max_branch_offset
)
5451 /* Nop out the reloc, since we're finalizing things here. */
5452 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
5455 /* Get the section contents. */
5456 if (contents
== NULL
)
5458 /* Get cached copy if it exists. */
5459 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
5460 contents
= elf_section_data (isec
)->this_hdr
.contents
;
5463 /* Go get them off disk. */
5464 if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
5469 /* Fix up the existing branch to hit the trampoline. */
5470 hit_addr
= contents
+ roff
;
5474 case R_PPC_LOCAL24PC
:
5475 case R_PPC_PLTREL24
:
5476 t0
= bfd_get_32 (abfd
, hit_addr
);
5478 t0
|= val
& 0x3fffffc;
5479 bfd_put_32 (abfd
, t0
, hit_addr
);
5483 case R_PPC_REL14_BRTAKEN
:
5484 case R_PPC_REL14_BRNTAKEN
:
5485 t0
= bfd_get_32 (abfd
, hit_addr
);
5488 bfd_put_32 (abfd
, t0
, hit_addr
);
5493 /* Write out the trampolines. */
5494 changed
= fixups
!= NULL
;
5504 struct one_fixup
*f
= fixups
;
5505 fixups
= fixups
->next
;
5510 contents
= bfd_realloc (contents
, trampoff
);
5511 if (contents
== NULL
)
5514 isec
->size
= (isec
->size
+ 3) & (bfd_vma
) -4;
5515 /* Branch around the trampolines. */
5516 val
= trampoff
- isec
->size
+ 0x48000000;
5517 dest
= contents
+ isec
->size
;
5518 isec
->size
= trampoff
;
5519 bfd_put_32 (abfd
, val
, dest
);
5522 if (link_info
->shared
)
5524 stub
= shared_stub_entry
;
5525 size
= ARRAY_SIZE (shared_stub_entry
);
5530 size
= ARRAY_SIZE (stub_entry
);
5534 while (dest
< contents
+ trampoff
)
5536 bfd_put_32 (abfd
, stub
[i
], dest
);
5542 BFD_ASSERT (i
== 0);
5546 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5548 if (! link_info
->keep_memory
)
5552 /* Cache the symbols for elf_link_input_bfd. */
5553 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
5557 if (contents
!= NULL
5558 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
5560 if (!changed
&& !link_info
->keep_memory
)
5564 /* Cache the section contents for elf_link_input_bfd. */
5565 elf_section_data (isec
)->this_hdr
.contents
= contents
;
5569 if (elf_section_data (isec
)->relocs
!= internal_relocs
)
5572 free (internal_relocs
);
5574 elf_section_data (isec
)->relocs
= internal_relocs
;
5581 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
5583 if (contents
!= NULL
5584 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
5586 if (internal_relocs
!= NULL
5587 && elf_section_data (isec
)->relocs
!= internal_relocs
)
5588 free (internal_relocs
);
5592 /* What to do when ld finds relocations against symbols defined in
5593 discarded sections. */
5596 ppc_elf_action_discarded (asection
*sec
)
5598 if (strcmp (".fixup", sec
->name
) == 0)
5601 if (strcmp (".got2", sec
->name
) == 0)
5604 return _bfd_elf_default_action_discarded (sec
);
5607 /* Fill in the address for a pointer generated in a linker section. */
5610 elf_finish_pointer_linker_section (bfd
*input_bfd
,
5611 elf_linker_section_t
*lsect
,
5612 struct elf_link_hash_entry
*h
,
5614 const Elf_Internal_Rela
*rel
)
5616 elf_linker_section_pointers_t
*linker_section_ptr
;
5618 BFD_ASSERT (lsect
!= NULL
);
5622 /* Handle global symbol. */
5623 struct ppc_elf_link_hash_entry
*eh
;
5625 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5626 BFD_ASSERT (eh
->elf
.def_regular
);
5627 linker_section_ptr
= eh
->linker_section_pointer
;
5631 /* Handle local symbol. */
5632 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
5634 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
5635 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
5638 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
5641 BFD_ASSERT (linker_section_ptr
!= NULL
);
5643 /* Offset will always be a multiple of four, so use the bottom bit
5644 as a "written" flag. */
5645 if ((linker_section_ptr
->offset
& 1) == 0)
5647 bfd_put_32 (lsect
->section
->owner
,
5648 relocation
+ linker_section_ptr
->addend
,
5649 lsect
->section
->contents
+ linker_section_ptr
->offset
);
5650 linker_section_ptr
->offset
+= 1;
5653 relocation
= (lsect
->section
->output_offset
5654 + linker_section_ptr
->offset
- 1
5659 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5660 lsect
->name
, (long) relocation
, (long) relocation
);
5663 /* Subtract out the addend, because it will get added back in by the normal
5665 return relocation
- linker_section_ptr
->addend
;
5668 /* The RELOCATE_SECTION function is called by the ELF backend linker
5669 to handle the relocations for a section.
5671 The relocs are always passed as Rela structures; if the section
5672 actually uses Rel structures, the r_addend field will always be
5675 This function is responsible for adjust the section contents as
5676 necessary, and (if using Rela relocs and generating a
5677 relocatable output file) adjusting the reloc addend as
5680 This function does not have to worry about setting the reloc
5681 address or the reloc symbol index.
5683 LOCAL_SYMS is a pointer to the swapped in local symbols.
5685 LOCAL_SECTIONS is an array giving the section in the input file
5686 corresponding to the st_shndx field of each local symbol.
5688 The global hash table entry for the global symbols can be found
5689 via elf_sym_hashes (input_bfd).
5691 When generating relocatable output, this function must handle
5692 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5693 going to be the section symbol corresponding to the output
5694 section, which means that the addend must be adjusted
5698 ppc_elf_relocate_section (bfd
*output_bfd
,
5699 struct bfd_link_info
*info
,
5701 asection
*input_section
,
5703 Elf_Internal_Rela
*relocs
,
5704 Elf_Internal_Sym
*local_syms
,
5705 asection
**local_sections
)
5707 Elf_Internal_Shdr
*symtab_hdr
;
5708 struct elf_link_hash_entry
**sym_hashes
;
5709 struct ppc_elf_link_hash_table
*htab
;
5710 Elf_Internal_Rela
*rel
;
5711 Elf_Internal_Rela
*relend
;
5712 Elf_Internal_Rela outrel
;
5714 asection
*got2
, *sreloc
= NULL
;
5715 bfd_vma
*local_got_offsets
;
5716 bfd_boolean ret
= TRUE
;
5717 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
5720 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5721 "%ld relocations%s",
5722 input_bfd
, input_section
,
5723 (long) input_section
->reloc_count
,
5724 (info
->relocatable
) ? " (relocatable)" : "");
5727 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
5729 /* Initialize howto table if not already done. */
5730 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
5731 ppc_elf_howto_init ();
5733 htab
= ppc_elf_hash_table (info
);
5734 local_got_offsets
= elf_local_got_offsets (input_bfd
);
5735 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
5736 sym_hashes
= elf_sym_hashes (input_bfd
);
5738 relend
= relocs
+ input_section
->reloc_count
;
5739 for (; rel
< relend
; rel
++)
5741 enum elf_ppc_reloc_type r_type
;
5743 bfd_reloc_status_type r
;
5744 Elf_Internal_Sym
*sym
;
5746 struct elf_link_hash_entry
*h
;
5747 const char *sym_name
;
5748 reloc_howto_type
*howto
;
5749 unsigned long r_symndx
;
5751 bfd_vma branch_bit
, insn
, from
;
5752 bfd_boolean unresolved_reloc
;
5754 unsigned int tls_type
, tls_mask
, tls_gd
;
5756 r_type
= ELF32_R_TYPE (rel
->r_info
);
5760 unresolved_reloc
= FALSE
;
5762 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5764 if (r_symndx
< symtab_hdr
->sh_info
)
5766 sym
= local_syms
+ r_symndx
;
5767 sec
= local_sections
[r_symndx
];
5768 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
5770 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
5774 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
5775 r_symndx
, symtab_hdr
, sym_hashes
,
5777 unresolved_reloc
, warned
);
5779 sym_name
= h
->root
.root
.string
;
5782 if (sec
!= NULL
&& elf_discarded_section (sec
))
5784 /* For relocs against symbols from removed linkonce sections,
5785 or sections discarded by a linker script, we just want the
5786 section contents zeroed. Avoid any special processing. */
5788 if (r_type
< R_PPC_max
)
5789 howto
= ppc_elf_howto_table
[r_type
];
5790 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
5796 if (info
->relocatable
)
5799 && r_type
== R_PPC_PLTREL24
5800 && rel
->r_addend
>= 32768)
5802 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5803 addend specifies the GOT pointer offset within .got2. */
5804 rel
->r_addend
+= got2
->output_offset
;
5809 /* TLS optimizations. Replace instruction sequences and relocs
5810 based on information we collected in tls_optimize. We edit
5811 RELOCS so that --emit-relocs will output something sensible
5812 for the final instruction stream. */
5815 if (IS_PPC_TLS_RELOC (r_type
))
5818 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
5819 else if (local_got_offsets
!= NULL
)
5822 lgot_masks
= (char *) (local_got_offsets
+ symtab_hdr
->sh_info
);
5823 tls_mask
= lgot_masks
[r_symndx
];
5827 /* Ensure reloc mapping code below stays sane. */
5828 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
5829 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
5830 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
5831 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
5832 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
5833 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
5834 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
5835 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
5842 case R_PPC_GOT_TPREL16
:
5843 case R_PPC_GOT_TPREL16_LO
:
5845 && (tls_mask
& TLS_TPREL
) == 0)
5848 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
5850 insn
|= 0x3c020000; /* addis 0,2,0 */
5851 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
5852 r_type
= R_PPC_TPREL16_HA
;
5853 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5859 && (tls_mask
& TLS_TPREL
) == 0)
5862 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
5863 if ((insn
& ((31 << 26) | (31 << 11)))
5864 == ((31 << 26) | (2 << 11)))
5865 rtra
= insn
& ((1 << 26) - (1 << 16));
5866 else if ((insn
& ((31 << 26) | (31 << 16)))
5867 == ((31 << 26) | (2 << 16)))
5868 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
5871 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
5874 else if ((insn
& (31 << 1)) == 23 << 1
5875 && ((insn
& (31 << 6)) < 14 << 6
5876 || ((insn
& (31 << 6)) >= 16 << 6
5877 && (insn
& (31 << 6)) < 24 << 6)))
5878 /* load and store indexed -> dform. */
5879 insn
= (32 | ((insn
>> 6) & 31)) << 26;
5880 else if ((insn
& (31 << 1)) == 21 << 1
5881 && (insn
& (0x1a << 6)) == 0)
5882 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5883 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
5884 | ((insn
>> 6) & 1));
5885 else if ((insn
& (31 << 1)) == 21 << 1
5886 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
5888 insn
= (58 << 26) | 2;
5892 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
5893 r_type
= R_PPC_TPREL16_LO
;
5894 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5896 /* Was PPC_TLS which sits on insn boundary, now
5897 PPC_TPREL16_LO which is at low-order half-word. */
5898 rel
->r_offset
+= d_offset
;
5902 case R_PPC_GOT_TLSGD16_HI
:
5903 case R_PPC_GOT_TLSGD16_HA
:
5904 tls_gd
= TLS_TPRELGD
;
5905 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
5909 case R_PPC_GOT_TLSLD16_HI
:
5910 case R_PPC_GOT_TLSLD16_HA
:
5911 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
5914 if ((tls_mask
& tls_gd
) != 0)
5915 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
5916 + R_PPC_GOT_TPREL16
);
5919 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
5920 rel
->r_offset
-= d_offset
;
5921 r_type
= R_PPC_NONE
;
5923 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5927 case R_PPC_GOT_TLSGD16
:
5928 case R_PPC_GOT_TLSGD16_LO
:
5929 tls_gd
= TLS_TPRELGD
;
5930 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
5931 goto tls_get_addr_check
;
5934 case R_PPC_GOT_TLSLD16
:
5935 case R_PPC_GOT_TLSLD16_LO
:
5936 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
5939 if (rel
+ 1 < relend
)
5941 enum elf_ppc_reloc_type r_type2
;
5942 unsigned long r_symndx2
;
5943 struct elf_link_hash_entry
*h2
;
5944 bfd_vma insn1
, insn2
;
5947 /* The next instruction should be a call to
5948 __tls_get_addr. Peek at the reloc to be sure. */
5949 r_type2
= ELF32_R_TYPE (rel
[1].r_info
);
5950 r_symndx2
= ELF32_R_SYM (rel
[1].r_info
);
5951 if (r_symndx2
< symtab_hdr
->sh_info
5952 || (r_type2
!= R_PPC_REL14
5953 && r_type2
!= R_PPC_REL14_BRTAKEN
5954 && r_type2
!= R_PPC_REL14_BRNTAKEN
5955 && r_type2
!= R_PPC_REL24
5956 && r_type2
!= R_PPC_PLTREL24
))
5959 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
5960 while (h2
->root
.type
== bfd_link_hash_indirect
5961 || h2
->root
.type
== bfd_link_hash_warning
)
5962 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
5963 if (h2
== NULL
|| h2
!= htab
->tls_get_addr
)
5966 /* OK, it checks out. Replace the call. */
5967 offset
= rel
[1].r_offset
;
5968 insn1
= bfd_get_32 (output_bfd
,
5969 contents
+ rel
->r_offset
- d_offset
);
5970 if ((tls_mask
& tls_gd
) != 0)
5973 insn1
&= (1 << 26) - 1;
5974 insn1
|= 32 << 26; /* lwz */
5975 insn2
= 0x7c631214; /* add 3,3,2 */
5976 rel
[1].r_info
= ELF32_R_INFO (r_symndx2
, R_PPC_NONE
);
5977 rel
[1].r_addend
= 0;
5978 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
5979 + R_PPC_GOT_TPREL16
);
5980 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5985 insn1
= 0x3c620000; /* addis 3,2,0 */
5986 insn2
= 0x38630000; /* addi 3,3,0 */
5989 /* Was an LD reloc. */
5991 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
5993 r_type
= R_PPC_TPREL16_HA
;
5994 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5995 rel
[1].r_info
= ELF32_R_INFO (r_symndx
,
5997 rel
[1].r_offset
+= d_offset
;
5998 rel
[1].r_addend
= rel
->r_addend
;
6000 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- d_offset
);
6001 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
6004 /* We changed the symbol on an LD reloc. Start over
6005 in order to get h, sym, sec etc. right. */
6014 /* Handle other relocations that tweak non-addend part of insn. */
6021 /* Branch taken prediction relocations. */
6022 case R_PPC_ADDR14_BRTAKEN
:
6023 case R_PPC_REL14_BRTAKEN
:
6024 branch_bit
= BRANCH_PREDICT_BIT
;
6027 /* Branch not taken prediction relocations. */
6028 case R_PPC_ADDR14_BRNTAKEN
:
6029 case R_PPC_REL14_BRNTAKEN
:
6030 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6031 insn
&= ~BRANCH_PREDICT_BIT
;
6034 from
= (rel
->r_offset
6035 + input_section
->output_offset
6036 + input_section
->output_section
->vma
);
6038 /* Invert 'y' bit if not the default. */
6039 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
6040 insn
^= BRANCH_PREDICT_BIT
;
6042 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6046 addend
= rel
->r_addend
;
6049 if (r_type
< R_PPC_max
)
6050 howto
= ppc_elf_howto_table
[r_type
];
6054 (*_bfd_error_handler
)
6055 (_("%B: unknown relocation type %d for symbol %s"),
6056 input_bfd
, (int) r_type
, sym_name
);
6058 bfd_set_error (bfd_error_bad_value
);
6064 case R_PPC_EMB_MRKREF
:
6065 case R_PPC_GNU_VTINHERIT
:
6066 case R_PPC_GNU_VTENTRY
:
6069 /* GOT16 relocations. Like an ADDR16 using the symbol's
6070 address in the GOT as relocation value instead of the
6071 symbol's value itself. Also, create a GOT entry for the
6072 symbol and put the symbol value there. */
6073 case R_PPC_GOT_TLSGD16
:
6074 case R_PPC_GOT_TLSGD16_LO
:
6075 case R_PPC_GOT_TLSGD16_HI
:
6076 case R_PPC_GOT_TLSGD16_HA
:
6077 tls_type
= TLS_TLS
| TLS_GD
;
6080 case R_PPC_GOT_TLSLD16
:
6081 case R_PPC_GOT_TLSLD16_LO
:
6082 case R_PPC_GOT_TLSLD16_HI
:
6083 case R_PPC_GOT_TLSLD16_HA
:
6084 tls_type
= TLS_TLS
| TLS_LD
;
6087 case R_PPC_GOT_TPREL16
:
6088 case R_PPC_GOT_TPREL16_LO
:
6089 case R_PPC_GOT_TPREL16_HI
:
6090 case R_PPC_GOT_TPREL16_HA
:
6091 tls_type
= TLS_TLS
| TLS_TPREL
;
6094 case R_PPC_GOT_DTPREL16
:
6095 case R_PPC_GOT_DTPREL16_LO
:
6096 case R_PPC_GOT_DTPREL16_HI
:
6097 case R_PPC_GOT_DTPREL16_HA
:
6098 tls_type
= TLS_TLS
| TLS_DTPREL
;
6102 case R_PPC_GOT16_LO
:
6103 case R_PPC_GOT16_HI
:
6104 case R_PPC_GOT16_HA
:
6107 /* Relocation is to the entry for this symbol in the global
6113 if (htab
->got
== NULL
)
6117 if (tls_type
== (TLS_TLS
| TLS_LD
)
6119 || !h
->def_dynamic
))
6120 offp
= &htab
->tlsld_got
.offset
;
6124 dyn
= htab
->elf
.dynamic_sections_created
;
6125 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
6127 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
6128 /* This is actually a static link, or it is a
6129 -Bsymbolic link and the symbol is defined
6130 locally, or the symbol was forced to be local
6131 because of a version file. */
6136 unresolved_reloc
= FALSE
;
6138 offp
= &h
->got
.offset
;
6142 if (local_got_offsets
== NULL
)
6144 offp
= &local_got_offsets
[r_symndx
];
6147 /* The offset must always be a multiple of 4. We use the
6148 least significant bit to record whether we have already
6149 processed this entry. */
6155 unsigned int tls_m
= (tls_mask
6156 & (TLS_LD
| TLS_GD
| TLS_DTPREL
6157 | TLS_TPREL
| TLS_TPRELGD
));
6159 if (offp
== &htab
->tlsld_got
.offset
)
6165 /* We might have multiple got entries for this sym.
6166 Initialize them all. */
6171 if ((tls_m
& TLS_LD
) != 0)
6173 tls_ty
= TLS_TLS
| TLS_LD
;
6176 else if ((tls_m
& TLS_GD
) != 0)
6178 tls_ty
= TLS_TLS
| TLS_GD
;
6181 else if ((tls_m
& TLS_DTPREL
) != 0)
6183 tls_ty
= TLS_TLS
| TLS_DTPREL
;
6184 tls_m
&= ~TLS_DTPREL
;
6186 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6188 tls_ty
= TLS_TLS
| TLS_TPREL
;
6192 /* Generate relocs for the dynamic linker. */
6193 if ((info
->shared
|| indx
!= 0)
6195 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6196 || h
->root
.type
!= bfd_link_hash_undefweak
))
6198 outrel
.r_offset
= (htab
->got
->output_section
->vma
6199 + htab
->got
->output_offset
6201 outrel
.r_addend
= 0;
6202 if (tls_ty
& (TLS_LD
| TLS_GD
))
6204 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
6205 if (tls_ty
== (TLS_TLS
| TLS_GD
))
6207 loc
= htab
->relgot
->contents
;
6208 loc
+= (htab
->relgot
->reloc_count
++
6209 * sizeof (Elf32_External_Rela
));
6210 bfd_elf32_swap_reloca_out (output_bfd
,
6212 outrel
.r_offset
+= 4;
6214 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
6217 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
6218 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
6219 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
6220 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
6222 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_RELATIVE
);
6224 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
6227 outrel
.r_addend
+= relocation
;
6228 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
6229 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
6231 loc
= htab
->relgot
->contents
;
6232 loc
+= (htab
->relgot
->reloc_count
++
6233 * sizeof (Elf32_External_Rela
));
6234 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
6237 /* Init the .got section contents if we're not
6238 emitting a reloc. */
6241 bfd_vma value
= relocation
;
6243 if (tls_ty
== (TLS_TLS
| TLS_LD
))
6245 else if (tls_ty
!= 0)
6247 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6248 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
6249 value
+= DTP_OFFSET
- TP_OFFSET
;
6251 if (tls_ty
== (TLS_TLS
| TLS_GD
))
6253 bfd_put_32 (output_bfd
, value
,
6254 htab
->got
->contents
+ off
+ 4);
6258 bfd_put_32 (output_bfd
, value
,
6259 htab
->got
->contents
+ off
);
6263 if (tls_ty
& (TLS_LD
| TLS_GD
))
6272 if (off
>= (bfd_vma
) -2)
6275 if ((tls_type
& TLS_TLS
) != 0)
6277 if (tls_type
!= (TLS_TLS
| TLS_LD
))
6279 if ((tls_mask
& TLS_LD
) != 0
6281 || !h
->def_dynamic
))
6283 if (tls_type
!= (TLS_TLS
| TLS_GD
))
6285 if ((tls_mask
& TLS_GD
) != 0)
6287 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
6289 if ((tls_mask
& TLS_DTPREL
) != 0)
6296 relocation
= htab
->got
->output_offset
+ off
;
6297 relocation
-= htab
->elf
.hgot
->root
.u
.def
.value
;
6299 /* Addends on got relocations don't make much sense.
6300 x+off@got is actually x@got+off, and since the got is
6301 generated by a hash table traversal, the value in the
6302 got at entry m+n bears little relation to the entry m. */
6304 (*_bfd_error_handler
)
6305 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6308 (long) rel
->r_offset
,
6314 /* Relocations that need no special processing. */
6315 case R_PPC_LOCAL24PC
:
6316 /* It makes no sense to point a local relocation
6317 at a symbol not in this object. */
6318 if (unresolved_reloc
)
6320 if (! (*info
->callbacks
->undefined_symbol
) (info
,
6321 h
->root
.root
.string
,
6331 case R_PPC_DTPREL16
:
6332 case R_PPC_DTPREL16_LO
:
6333 case R_PPC_DTPREL16_HI
:
6334 case R_PPC_DTPREL16_HA
:
6335 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6338 /* Relocations that may need to be propagated if this is a shared
6341 case R_PPC_TPREL16_LO
:
6342 case R_PPC_TPREL16_HI
:
6343 case R_PPC_TPREL16_HA
:
6344 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
6345 /* The TPREL16 relocs shouldn't really be used in shared
6346 libs as they will result in DT_TEXTREL being set, but
6347 support them anyway. */
6351 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
6354 case R_PPC_DTPREL32
:
6355 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6358 case R_PPC_DTPMOD32
:
6364 case R_PPC_REL16_LO
:
6365 case R_PPC_REL16_HI
:
6366 case R_PPC_REL16_HA
:
6372 case R_PPC_REL14_BRTAKEN
:
6373 case R_PPC_REL14_BRNTAKEN
:
6374 /* If these relocations are not to a named symbol, they can be
6375 handled right here, no need to bother the dynamic linker. */
6376 if (SYMBOL_REFERENCES_LOCAL (info
, h
)
6377 || h
== htab
->elf
.hgot
)
6381 /* Relocations that always need to be propagated if this is a shared
6386 case R_PPC_ADDR16_LO
:
6387 case R_PPC_ADDR16_HI
:
6388 case R_PPC_ADDR16_HA
:
6390 case R_PPC_ADDR14_BRTAKEN
:
6391 case R_PPC_ADDR14_BRNTAKEN
:
6395 if ((input_section
->flags
& SEC_ALLOC
) == 0)
6401 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6402 || h
->root
.type
!= bfd_link_hash_undefweak
)
6403 && (MUST_BE_DYN_RELOC (r_type
)
6404 || !SYMBOL_CALLS_LOCAL (info
, h
)))
6405 || (ELIMINATE_COPY_RELOCS
6411 && !h
->def_regular
))
6416 fprintf (stderr
, "ppc_elf_relocate_section needs to "
6417 "create relocation for %s\n",
6418 (h
&& h
->root
.root
.string
6419 ? h
->root
.root
.string
: "<unknown>"));
6422 /* When generating a shared object, these relocations
6423 are copied into the output file to be resolved at run
6429 name
= (bfd_elf_string_from_elf_section
6431 elf_elfheader (input_bfd
)->e_shstrndx
,
6432 elf_section_data (input_section
)->rel_hdr
.sh_name
));
6436 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
6437 && strcmp (bfd_get_section_name (input_bfd
,
6441 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
6442 BFD_ASSERT (sreloc
!= NULL
);
6448 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
6450 if (outrel
.r_offset
== (bfd_vma
) -1
6451 || outrel
.r_offset
== (bfd_vma
) -2)
6452 skip
= (int) outrel
.r_offset
;
6453 outrel
.r_offset
+= (input_section
->output_section
->vma
6454 + input_section
->output_offset
);
6457 memset (&outrel
, 0, sizeof outrel
);
6458 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
6460 unresolved_reloc
= FALSE
;
6461 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
6462 outrel
.r_addend
= rel
->r_addend
;
6466 outrel
.r_addend
= relocation
+ rel
->r_addend
;
6468 if (r_type
== R_PPC_ADDR32
)
6469 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
6474 if (bfd_is_abs_section (sec
))
6476 else if (sec
== NULL
|| sec
->owner
== NULL
)
6478 bfd_set_error (bfd_error_bad_value
);
6485 /* We are turning this relocation into one
6486 against a section symbol. It would be
6487 proper to subtract the symbol's value,
6488 osec->vma, from the emitted reloc addend,
6489 but ld.so expects buggy relocs. */
6490 osec
= sec
->output_section
;
6491 indx
= elf_section_data (osec
)->dynindx
;
6494 osec
= htab
->elf
.text_index_section
;
6495 indx
= elf_section_data (osec
)->dynindx
;
6497 BFD_ASSERT (indx
!= 0);
6500 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6501 indx
, osec
->name
, osec
->flags
,
6502 h
->root
.root
.string
);
6506 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
6510 loc
= sreloc
->contents
;
6511 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6512 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
6517 /* This reloc will be computed at runtime. We clear the memory
6518 so that it contains predictable value. */
6520 && ((input_section
->flags
& SEC_ALLOC
) != 0
6521 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
6523 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
6530 case R_PPC_RELAX32PC_PLT
:
6531 case R_PPC_RELAX32_PLT
:
6533 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
6535 if (htab
->plt_type
== PLT_NEW
)
6536 relocation
= (htab
->glink
->output_section
->vma
6537 + htab
->glink
->output_offset
6538 + ent
->glink_offset
);
6540 relocation
= (htab
->plt
->output_section
->vma
6541 + htab
->plt
->output_offset
6545 if (r_type
== R_PPC_RELAX32_PLT
)
6549 case R_PPC_RELAX32PC
:
6550 relocation
-= (input_section
->output_section
->vma
6551 + input_section
->output_offset
6552 + rel
->r_offset
- 4);
6561 t0
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6562 t1
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
+ 4);
6564 /* We're clearing the bits for R_PPC_ADDR16_HA
6565 and R_PPC_ADDR16_LO here. */
6569 /* t0 is HA, t1 is LO */
6570 relocation
+= addend
;
6571 t0
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
6572 t1
|= relocation
& 0xffff;
6574 bfd_put_32 (output_bfd
, t0
, contents
+ rel
->r_offset
);
6575 bfd_put_32 (output_bfd
, t1
, contents
+ rel
->r_offset
+ 4);
6579 /* Indirect .sdata relocation. */
6580 case R_PPC_EMB_SDAI16
:
6581 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
6583 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
6584 h
, relocation
, rel
);
6587 /* Indirect .sdata2 relocation. */
6588 case R_PPC_EMB_SDA2I16
:
6589 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
6591 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
6592 h
, relocation
, rel
);
6595 /* Handle the TOC16 reloc. We want to use the offset within the .got
6596 section, not the actual VMA. This is appropriate when generating
6597 an embedded ELF object, for which the .got section acts like the
6598 AIX .toc section. */
6599 case R_PPC_TOC16
: /* phony GOT16 relocations */
6600 BFD_ASSERT (sec
!= NULL
);
6601 BFD_ASSERT (bfd_is_und_section (sec
)
6602 || strcmp (bfd_get_section_name (abfd
, sec
), ".got") == 0
6603 || strcmp (bfd_get_section_name (abfd
, sec
), ".cgot") == 0);
6605 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
6608 case R_PPC_PLTREL24
:
6609 /* Relocation is to the entry for this symbol in the
6610 procedure linkage table. */
6612 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
6616 || htab
->plt
== NULL
)
6618 /* We didn't make a PLT entry for this symbol. This
6619 happens when statically linking PIC code, or when
6620 using -Bsymbolic. */
6624 unresolved_reloc
= FALSE
;
6625 if (htab
->plt_type
== PLT_NEW
)
6626 relocation
= (htab
->glink
->output_section
->vma
6627 + htab
->glink
->output_offset
6628 + ent
->glink_offset
);
6630 relocation
= (htab
->plt
->output_section
->vma
6631 + htab
->plt
->output_offset
6636 /* Relocate against _SDA_BASE_. */
6637 case R_PPC_SDAREL16
:
6640 struct elf_link_hash_entry
*sh
;
6642 BFD_ASSERT (sec
!= NULL
);
6643 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6644 if (! ((CONST_STRNEQ (name
, ".sdata")
6645 && (name
[6] == 0 || name
[6] == '.'))
6646 || (CONST_STRNEQ (name
, ".sbss")
6647 && (name
[5] == 0 || name
[5] == '.'))))
6649 (*_bfd_error_handler
)
6650 (_("%B: the target (%s) of a %s relocation is "
6651 "in the wrong output section (%s)"),
6657 sh
= htab
->sdata
[0].sym
;
6658 addend
-= (sh
->root
.u
.def
.value
6659 + sh
->root
.u
.def
.section
->output_offset
6660 + sh
->root
.u
.def
.section
->output_section
->vma
);
6664 /* Relocate against _SDA2_BASE_. */
6665 case R_PPC_EMB_SDA2REL
:
6668 struct elf_link_hash_entry
*sh
;
6670 BFD_ASSERT (sec
!= NULL
);
6671 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6672 if (! (CONST_STRNEQ (name
, ".sdata2")
6673 || CONST_STRNEQ (name
, ".sbss2")))
6675 (*_bfd_error_handler
)
6676 (_("%B: the target (%s) of a %s relocation is "
6677 "in the wrong output section (%s)"),
6683 bfd_set_error (bfd_error_bad_value
);
6687 sh
= htab
->sdata
[1].sym
;
6688 addend
-= (sh
->root
.u
.def
.value
6689 + sh
->root
.u
.def
.section
->output_offset
6690 + sh
->root
.u
.def
.section
->output_section
->vma
);
6694 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6695 case R_PPC_EMB_SDA21
:
6696 case R_PPC_EMB_RELSDA
:
6700 struct elf_link_hash_entry
*sh
;
6702 BFD_ASSERT (sec
!= NULL
);
6703 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6704 if (((CONST_STRNEQ (name
, ".sdata")
6705 && (name
[6] == 0 || name
[6] == '.'))
6706 || (CONST_STRNEQ (name
, ".sbss")
6707 && (name
[5] == 0 || name
[5] == '.'))))
6710 sh
= htab
->sdata
[0].sym
;
6711 addend
-= (sh
->root
.u
.def
.value
6712 + sh
->root
.u
.def
.section
->output_offset
6713 + sh
->root
.u
.def
.section
->output_section
->vma
);
6716 else if (CONST_STRNEQ (name
, ".sdata2")
6717 || CONST_STRNEQ (name
, ".sbss2"))
6720 sh
= htab
->sdata
[1].sym
;
6721 addend
-= (sh
->root
.u
.def
.value
6722 + sh
->root
.u
.def
.section
->output_offset
6723 + sh
->root
.u
.def
.section
->output_section
->vma
);
6726 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
6727 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
6734 (*_bfd_error_handler
)
6735 (_("%B: the target (%s) of a %s relocation is "
6736 "in the wrong output section (%s)"),
6742 bfd_set_error (bfd_error_bad_value
);
6747 if (r_type
== R_PPC_EMB_SDA21
)
6748 { /* fill in register field */
6749 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6750 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
6751 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6756 /* Relocate against the beginning of the section. */
6758 case R_PPC_SECTOFF_LO
:
6759 case R_PPC_SECTOFF_HI
:
6760 case R_PPC_SECTOFF_HA
:
6761 BFD_ASSERT (sec
!= NULL
);
6762 addend
-= sec
->output_section
->vma
;
6765 /* Negative relocations. */
6766 case R_PPC_EMB_NADDR32
:
6767 case R_PPC_EMB_NADDR16
:
6768 case R_PPC_EMB_NADDR16_LO
:
6769 case R_PPC_EMB_NADDR16_HI
:
6770 case R_PPC_EMB_NADDR16_HA
:
6771 addend
-= 2 * relocation
;
6775 case R_PPC_GLOB_DAT
:
6776 case R_PPC_JMP_SLOT
:
6777 case R_PPC_RELATIVE
:
6779 case R_PPC_PLTREL32
:
6780 case R_PPC_PLT16_LO
:
6781 case R_PPC_PLT16_HI
:
6782 case R_PPC_PLT16_HA
:
6784 case R_PPC_EMB_RELSEC16
:
6785 case R_PPC_EMB_RELST_LO
:
6786 case R_PPC_EMB_RELST_HI
:
6787 case R_PPC_EMB_RELST_HA
:
6788 case R_PPC_EMB_BIT_FLD
:
6789 (*_bfd_error_handler
)
6790 (_("%B: relocation %s is not yet supported for symbol %s."),
6795 bfd_set_error (bfd_error_invalid_operation
);
6800 /* Do any further special processing. */
6806 case R_PPC_ADDR16_HA
:
6807 case R_PPC_REL16_HA
:
6808 case R_PPC_SECTOFF_HA
:
6809 case R_PPC_TPREL16_HA
:
6810 case R_PPC_DTPREL16_HA
:
6811 case R_PPC_EMB_NADDR16_HA
:
6812 case R_PPC_EMB_RELST_HA
:
6813 /* It's just possible that this symbol is a weak symbol
6814 that's not actually defined anywhere. In that case,
6815 'sec' would be NULL, and we should leave the symbol
6816 alone (it will be set to zero elsewhere in the link). */
6821 case R_PPC_PLT16_HA
:
6822 case R_PPC_GOT16_HA
:
6823 case R_PPC_GOT_TLSGD16_HA
:
6824 case R_PPC_GOT_TLSLD16_HA
:
6825 case R_PPC_GOT_TPREL16_HA
:
6826 case R_PPC_GOT_DTPREL16_HA
:
6827 /* Add 0x10000 if sign bit in 0:15 is set.
6828 Bits 0:15 are not used. */
6834 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6835 "offset = %ld, addend = %ld\n",
6840 (long) rel
->r_offset
,
6844 if (unresolved_reloc
6845 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
6848 (*_bfd_error_handler
)
6849 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6852 (long) rel
->r_offset
,
6858 r
= _bfd_final_link_relocate (howto
,
6866 if (r
!= bfd_reloc_ok
)
6868 if (r
== bfd_reloc_overflow
)
6873 && h
->root
.type
== bfd_link_hash_undefweak
6874 && howto
->pc_relative
)
6876 /* Assume this is a call protected by other code that
6877 detect the symbol is undefined. If this is the case,
6878 we can safely ignore the overflow. If not, the
6879 program is hosed anyway, and a little warning isn't
6885 if (! (*info
->callbacks
->reloc_overflow
) (info
,
6886 (h
? &h
->root
: NULL
),
6897 (*_bfd_error_handler
)
6898 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6899 input_bfd
, input_section
,
6900 (long) rel
->r_offset
, howto
->name
, sym_name
, (int) r
);
6907 fprintf (stderr
, "\n");
6913 #define PPC_LO(v) ((v) & 0xffff)
6914 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6915 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6917 /* Finish up dynamic symbol handling. We set the contents of various
6918 dynamic sections here. */
6921 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
6922 struct bfd_link_info
*info
,
6923 struct elf_link_hash_entry
*h
,
6924 Elf_Internal_Sym
*sym
)
6926 struct ppc_elf_link_hash_table
*htab
;
6927 struct plt_entry
*ent
;
6928 bfd_boolean doneone
;
6931 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
6932 h
->root
.root
.string
);
6935 htab
= ppc_elf_hash_table (info
);
6936 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6939 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6940 if (ent
->plt
.offset
!= (bfd_vma
) -1)
6944 Elf_Internal_Rela rela
;
6946 bfd_vma reloc_index
;
6948 if (htab
->plt_type
== PLT_NEW
)
6949 reloc_index
= ent
->plt
.offset
/ 4;
6952 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
6953 / htab
->plt_slot_size
);
6954 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
6955 && htab
->plt_type
== PLT_OLD
)
6956 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
6959 /* This symbol has an entry in the procedure linkage table.
6961 if (htab
->plt_type
== PLT_VXWORKS
)
6964 const bfd_vma
*plt_entry
;
6966 /* The first three entries in .got.plt are reserved. */
6967 got_offset
= (reloc_index
+ 3) * 4;
6969 /* Use the right PLT. */
6970 plt_entry
= info
->shared
? ppc_elf_vxworks_pic_plt_entry
6971 : ppc_elf_vxworks_plt_entry
;
6973 /* Fill in the .plt on VxWorks. */
6976 bfd_vma got_offset_hi
= (got_offset
>> 16)
6977 + ((got_offset
& 0x8000) >> 15);
6979 bfd_put_32 (output_bfd
,
6980 plt_entry
[0] | (got_offset_hi
& 0xffff),
6981 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
6982 bfd_put_32 (output_bfd
,
6983 plt_entry
[1] | (got_offset
& 0xffff),
6984 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
6990 + htab
->elf
.hgot
->root
.u
.def
.value
6991 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
6992 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
);
6993 bfd_vma got_loc_hi
= (got_loc
>> 16)
6994 + ((got_loc
& 0x8000) >> 15);
6996 bfd_put_32 (output_bfd
,
6997 plt_entry
[0] | (got_loc_hi
& 0xffff),
6998 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
6999 bfd_put_32 (output_bfd
,
7000 plt_entry
[1] | (got_loc
& 0xffff),
7001 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
7004 bfd_put_32 (output_bfd
, plt_entry
[2],
7005 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
7006 bfd_put_32 (output_bfd
, plt_entry
[3],
7007 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
7009 /* This instruction is an immediate load. The value loaded is
7010 the byte offset of the R_PPC_JMP_SLOT relocation from the
7011 start of the .rela.plt section. The value is stored in the
7012 low-order 16 bits of the load instruction. */
7013 /* NOTE: It appears that this is now an index rather than a
7014 prescaled offset. */
7015 bfd_put_32 (output_bfd
,
7016 plt_entry
[4] | reloc_index
,
7017 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
7018 /* This instruction is a PC-relative branch whose target is
7019 the start of the PLT section. The address of this branch
7020 instruction is 20 bytes beyond the start of this PLT entry.
7021 The address is encoded in bits 6-29, inclusive. The value
7022 stored is right-shifted by two bits, permitting a 26-bit
7024 bfd_put_32 (output_bfd
,
7026 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
7027 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
7028 bfd_put_32 (output_bfd
, plt_entry
[6],
7029 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
7030 bfd_put_32 (output_bfd
, plt_entry
[7],
7031 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
7033 /* Fill in the GOT entry corresponding to this PLT slot with
7034 the address immediately after the the "bctr" instruction
7035 in this PLT entry. */
7036 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
7037 + htab
->plt
->output_offset
7038 + ent
->plt
.offset
+ 16),
7039 htab
->sgotplt
->contents
+ got_offset
);
7043 /* Fill in a couple of entries in .rela.plt.unloaded. */
7044 loc
= htab
->srelplt2
->contents
7045 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
7046 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
7047 * sizeof (Elf32_External_Rela
));
7049 /* Provide the @ha relocation for the first instruction. */
7050 rela
.r_offset
= (htab
->plt
->output_section
->vma
7051 + htab
->plt
->output_offset
7052 + ent
->plt
.offset
+ 2);
7053 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
7055 rela
.r_addend
= got_offset
;
7056 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7057 loc
+= sizeof (Elf32_External_Rela
);
7059 /* Provide the @l relocation for the second instruction. */
7060 rela
.r_offset
= (htab
->plt
->output_section
->vma
7061 + htab
->plt
->output_offset
7062 + ent
->plt
.offset
+ 6);
7063 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
7065 rela
.r_addend
= got_offset
;
7066 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7067 loc
+= sizeof (Elf32_External_Rela
);
7069 /* Provide a relocation for the GOT entry corresponding to this
7070 PLT slot. Point it at the middle of the .plt entry. */
7071 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
7072 + htab
->sgotplt
->output_offset
7074 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
7076 rela
.r_addend
= ent
->plt
.offset
+ 16;
7077 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7080 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7081 In particular, the offset for the relocation is not the
7082 address of the PLT entry for this function, as specified
7083 by the ABI. Instead, the offset is set to the address of
7084 the GOT slot for this function. See EABI 4.4.4.1. */
7085 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
7086 + htab
->sgotplt
->output_offset
7092 rela
.r_offset
= (htab
->plt
->output_section
->vma
7093 + htab
->plt
->output_offset
7095 if (htab
->plt_type
== PLT_OLD
)
7097 /* We don't need to fill in the .plt. The ppc dynamic
7098 linker will fill it in. */
7102 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
7103 + htab
->glink
->output_section
->vma
7104 + htab
->glink
->output_offset
);
7105 bfd_put_32 (output_bfd
, val
,
7106 htab
->plt
->contents
+ ent
->plt
.offset
);
7110 /* Fill in the entry in the .rela.plt section. */
7111 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
7114 loc
= (htab
->relplt
->contents
7115 + reloc_index
* sizeof (Elf32_External_Rela
));
7116 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7118 if (!h
->def_regular
)
7120 /* Mark the symbol as undefined, rather than as defined in
7121 the .plt section. Leave the value alone. */
7122 sym
->st_shndx
= SHN_UNDEF
;
7123 /* If the symbol is weak, we do need to clear the value.
7124 Otherwise, the PLT entry would provide a definition for
7125 the symbol even if the symbol wasn't defined anywhere,
7126 and so the symbol would never be NULL. */
7127 if (!h
->ref_regular_nonweak
)
7133 if (htab
->plt_type
== PLT_NEW
)
7138 plt
= (ent
->plt
.offset
7139 + htab
->plt
->output_section
->vma
7140 + htab
->plt
->output_offset
);
7141 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
7143 if (info
->shared
|| info
->pie
)
7147 if (ent
->addend
>= 32768)
7149 + ent
->sec
->output_section
->vma
7150 + ent
->sec
->output_offset
);
7151 else if (htab
->elf
.hgot
!= NULL
)
7152 got
= (htab
->elf
.hgot
->root
.u
.def
.value
7153 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7154 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
);
7158 if (plt
+ 0x8000 < 0x10000)
7160 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7162 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7164 bfd_put_32 (output_bfd
, BCTR
, p
);
7166 bfd_put_32 (output_bfd
, NOP
, p
);
7171 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7173 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7175 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7177 bfd_put_32 (output_bfd
, BCTR
, p
);
7183 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7185 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7187 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7189 bfd_put_32 (output_bfd
, BCTR
, p
);
7192 /* We only need one non-PIC glink stub. */
7203 Elf_Internal_Rela rela
;
7206 /* This symbols needs a copy reloc. Set it up. */
7209 fprintf (stderr
, ", copy");
7212 BFD_ASSERT (h
->dynindx
!= -1);
7214 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
7218 BFD_ASSERT (s
!= NULL
);
7220 rela
.r_offset
= (h
->root
.u
.def
.value
7221 + h
->root
.u
.def
.section
->output_section
->vma
7222 + h
->root
.u
.def
.section
->output_offset
);
7223 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
7225 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
7226 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7230 fprintf (stderr
, "\n");
7233 /* Mark some specially defined symbols as absolute. */
7234 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
7235 || (!htab
->is_vxworks
7236 && (h
== htab
->elf
.hgot
7237 || strcmp (h
->root
.root
.string
,
7238 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7239 sym
->st_shndx
= SHN_ABS
;
7244 static enum elf_reloc_type_class
7245 ppc_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
7247 switch (ELF32_R_TYPE (rela
->r_info
))
7249 case R_PPC_RELATIVE
:
7250 return reloc_class_relative
;
7253 case R_PPC_JMP_SLOT
:
7254 return reloc_class_plt
;
7256 return reloc_class_copy
;
7258 return reloc_class_normal
;
7262 /* Finish up the dynamic sections. */
7265 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
7266 struct bfd_link_info
*info
)
7270 struct ppc_elf_link_hash_table
*htab
;
7275 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
7278 htab
= ppc_elf_hash_table (info
);
7279 dynobj
= elf_hash_table (info
)->dynobj
;
7280 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
7281 if (htab
->is_vxworks
)
7282 splt
= bfd_get_section_by_name (dynobj
, ".plt");
7287 if (htab
->elf
.hgot
!= NULL
)
7288 got
= (htab
->elf
.hgot
->root
.u
.def
.value
7289 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7290 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
);
7292 if (htab
->elf
.dynamic_sections_created
)
7294 Elf32_External_Dyn
*dyncon
, *dynconend
;
7296 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
7298 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
7299 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
7300 for (; dyncon
< dynconend
; dyncon
++)
7302 Elf_Internal_Dyn dyn
;
7305 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
7310 if (htab
->is_vxworks
)
7314 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
7318 dyn
.d_un
.d_val
= htab
->relplt
->size
;
7323 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
7327 dyn
.d_un
.d_ptr
= got
;
7331 if (htab
->is_vxworks
)
7334 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
7343 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
7347 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7348 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7349 if (htab
->got
!= NULL
)
7351 unsigned char *p
= htab
->got
->contents
;
7354 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
7355 if (htab
->plt_type
== PLT_OLD
)
7356 bfd_put_32 (output_bfd
, 0x4e800021 /* blrl */, p
- 4);
7360 val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
7361 bfd_put_32 (output_bfd
, val
, p
);
7363 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
7366 /* Fill in the first entry in the VxWorks procedure linkage table. */
7367 if (splt
&& splt
->size
> 0)
7369 /* Use the right PLT. */
7370 static const bfd_vma
*plt_entry
= NULL
;
7371 plt_entry
= info
->shared
?
7372 ppc_elf_vxworks_pic_plt0_entry
: ppc_elf_vxworks_plt0_entry
;
7377 (htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7378 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
7379 + htab
->elf
.hgot
->root
.u
.def
.value
);
7380 bfd_vma got_hi
= (got_value
>> 16) + ((got_value
& 0x8000) >> 15);
7382 bfd_put_32 (output_bfd
, plt_entry
[0] | (got_hi
& 0xffff),
7383 splt
->contents
+ 0);
7384 bfd_put_32 (output_bfd
, plt_entry
[1] | (got_value
& 0xffff),
7385 splt
->contents
+ 4);
7389 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
7390 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
7392 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
7393 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
7394 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
7395 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
7396 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
7397 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
7401 Elf_Internal_Rela rela
;
7404 loc
= htab
->srelplt2
->contents
;
7406 /* Output the @ha relocation for the first instruction. */
7407 rela
.r_offset
= (htab
->plt
->output_section
->vma
7408 + htab
->plt
->output_offset
7410 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
7412 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7413 loc
+= sizeof (Elf32_External_Rela
);
7415 /* Output the @l relocation for the second instruction. */
7416 rela
.r_offset
= (htab
->plt
->output_section
->vma
7417 + htab
->plt
->output_offset
7419 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
7421 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7422 loc
+= sizeof (Elf32_External_Rela
);
7424 /* Fix up the remaining relocations. They may have the wrong
7425 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7426 in which symbols were output. */
7427 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
7429 Elf_Internal_Rela rel
;
7431 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7432 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
7433 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7434 loc
+= sizeof (Elf32_External_Rela
);
7436 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7437 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
7438 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7439 loc
+= sizeof (Elf32_External_Rela
);
7441 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7442 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
7443 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7444 loc
+= sizeof (Elf32_External_Rela
);
7449 if (htab
->glink
!= NULL
&& htab
->glink
->contents
!= NULL
)
7452 unsigned char *endp
;
7457 * PIC glink code is the following:
7459 * # ith PLT code stub.
7460 * addis 11,30,(plt+(i-1)*4-got)@ha
7461 * lwz 11,(plt+(i-1)*4-got)@l(11)
7465 * # A table of branches, one for each plt entry.
7466 * # The idea is that the plt call stub loads ctr (and r11) with these
7467 * # addresses, so (r11 - res_0) gives the plt index * 4.
7468 * res_0: b PLTresolve
7469 * res_1: b PLTresolve
7471 * # Some number of entries towards the end can be nops
7477 * addis 11,11,(1f-res_0)@ha
7480 * 1: addi 11,11,(1b-res_0)@l
7483 * sub 11,11,12 # r11 = index * 4
7484 * addis 12,12,(got+4-1b)@ha
7485 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7486 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7489 * add 11,0,11 # r11 = index * 12 = reloc offset.
7492 static const unsigned int pic_plt_resolve
[] =
7512 static const unsigned int plt_resolve
[] =
7532 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
7534 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
7537 /* Build the branch table, one for each plt entry (less one),
7538 and perhaps some padding. */
7539 p
= htab
->glink
->contents
;
7540 p
+= htab
->glink_pltresolve
;
7541 endp
= htab
->glink
->contents
;
7542 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
7543 while (p
< endp
- 8 * 4)
7545 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
7550 bfd_put_32 (output_bfd
, NOP
, p
);
7554 res0
= (htab
->glink_pltresolve
7555 + htab
->glink
->output_section
->vma
7556 + htab
->glink
->output_offset
);
7558 /* Last comes the PLTresolve stub. */
7559 if (info
->shared
|| info
->pie
)
7563 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
7565 bfd_put_32 (output_bfd
, pic_plt_resolve
[i
], p
);
7568 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
7570 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
7571 + htab
->glink
->output_section
->vma
7572 + htab
->glink
->output_offset
);
7574 bfd_put_32 (output_bfd
,
7575 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
7576 bfd_put_32 (output_bfd
,
7577 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
7578 bfd_put_32 (output_bfd
,
7579 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
7580 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
7582 bfd_put_32 (output_bfd
,
7583 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
7584 bfd_put_32 (output_bfd
,
7585 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
7589 bfd_put_32 (output_bfd
,
7590 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
7591 bfd_put_32 (output_bfd
,
7592 LWZ_12_12
+ 4, p
+ 9*4);
7597 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
7599 bfd_put_32 (output_bfd
, plt_resolve
[i
], p
);
7602 p
-= 4 * ARRAY_SIZE (plt_resolve
);
7604 bfd_put_32 (output_bfd
,
7605 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
7606 bfd_put_32 (output_bfd
,
7607 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
7608 bfd_put_32 (output_bfd
,
7609 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
7610 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
7612 bfd_put_32 (output_bfd
,
7613 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
7614 bfd_put_32 (output_bfd
,
7615 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
7619 bfd_put_32 (output_bfd
,
7620 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
7621 bfd_put_32 (output_bfd
,
7622 LWZ_12_12
+ 4, p
+ 6*4);
7630 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7631 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7632 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7633 #define TARGET_BIG_NAME "elf32-powerpc"
7634 #define ELF_ARCH bfd_arch_powerpc
7635 #define ELF_MACHINE_CODE EM_PPC
7636 #ifdef __QNXTARGET__
7637 #define ELF_MAXPAGESIZE 0x1000
7639 #define ELF_MAXPAGESIZE 0x10000
7641 #define ELF_MINPAGESIZE 0x1000
7642 #define ELF_COMMONPAGESIZE 0x1000
7643 #define elf_info_to_howto ppc_elf_info_to_howto
7645 #ifdef EM_CYGNUS_POWERPC
7646 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7650 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7653 #define elf_backend_plt_not_loaded 1
7654 #define elf_backend_can_gc_sections 1
7655 #define elf_backend_can_refcount 1
7656 #define elf_backend_rela_normal 1
7658 #define bfd_elf32_mkobject ppc_elf_mkobject
7659 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7660 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7661 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7662 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
7663 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7664 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7666 #define elf_backend_object_p ppc_elf_object_p
7667 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7668 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7669 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7670 #define elf_backend_relocate_section ppc_elf_relocate_section
7671 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7672 #define elf_backend_check_relocs ppc_elf_check_relocs
7673 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7674 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7675 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7676 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7677 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7678 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7679 #define elf_backend_fake_sections ppc_elf_fake_sections
7680 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7681 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7682 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7683 #define elf_backend_write_core_note ppc_elf_write_core_note
7684 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7685 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7686 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7687 #define elf_backend_write_section ppc_elf_write_section
7688 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7689 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7690 #define elf_backend_action_discarded ppc_elf_action_discarded
7691 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
7693 #include "elf32-target.h"
7695 /* VxWorks Target */
7697 #undef TARGET_LITTLE_SYM
7698 #undef TARGET_LITTLE_NAME
7700 #undef TARGET_BIG_SYM
7701 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7702 #undef TARGET_BIG_NAME
7703 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7705 /* VxWorks uses the elf default section flags for .plt. */
7706 static const struct bfd_elf_special_section
*
7707 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
7709 if (sec
->name
== NULL
)
7712 if (strcmp (sec
->name
, ".plt") == 0)
7713 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
7715 return ppc_elf_get_sec_type_attr (abfd
, sec
);
7718 /* Like ppc_elf_link_hash_table_create, but overrides
7719 appropriately for VxWorks. */
7720 static struct bfd_link_hash_table
*
7721 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
7723 struct bfd_link_hash_table
*ret
;
7725 ret
= ppc_elf_link_hash_table_create (abfd
);
7728 struct ppc_elf_link_hash_table
*htab
7729 = (struct ppc_elf_link_hash_table
*)ret
;
7730 htab
->is_vxworks
= 1;
7731 htab
->plt_type
= PLT_VXWORKS
;
7732 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
7733 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
7734 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
7739 /* Tweak magic VxWorks symbols as they are loaded. */
7741 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
7742 struct bfd_link_info
*info
,
7743 Elf_Internal_Sym
*sym
,
7744 const char **namep ATTRIBUTE_UNUSED
,
7745 flagword
*flagsp ATTRIBUTE_UNUSED
,
7749 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
7753 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
7757 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
7759 ppc_elf_final_write_processing(abfd
, linker
);
7760 elf_vxworks_final_write_processing(abfd
, linker
);
7763 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7765 #undef elf_backend_want_plt_sym
7766 #define elf_backend_want_plt_sym 1
7767 #undef elf_backend_want_got_plt
7768 #define elf_backend_want_got_plt 1
7769 #undef elf_backend_got_symbol_offset
7770 #define elf_backend_got_symbol_offset 0
7771 #undef elf_backend_plt_not_loaded
7772 #define elf_backend_plt_not_loaded 0
7773 #undef elf_backend_plt_readonly
7774 #define elf_backend_plt_readonly 1
7775 #undef elf_backend_got_header_size
7776 #define elf_backend_got_header_size 12
7778 #undef bfd_elf32_bfd_link_hash_table_create
7779 #define bfd_elf32_bfd_link_hash_table_create \
7780 ppc_elf_vxworks_link_hash_table_create
7781 #undef elf_backend_add_symbol_hook
7782 #define elf_backend_add_symbol_hook \
7783 ppc_elf_vxworks_add_symbol_hook
7784 #undef elf_backend_link_output_symbol_hook
7785 #define elf_backend_link_output_symbol_hook \
7786 elf_vxworks_link_output_symbol_hook
7787 #undef elf_backend_final_write_processing
7788 #define elf_backend_final_write_processing \
7789 ppc_elf_vxworks_final_write_processing
7790 #undef elf_backend_get_sec_type_attr
7791 #define elf_backend_get_sec_type_attr \
7792 ppc_elf_vxworks_get_sec_type_attr
7793 #undef elf_backend_emit_relocs
7794 #define elf_backend_emit_relocs \
7795 elf_vxworks_emit_relocs
7798 #define elf32_bed ppc_elf_vxworks_bed
7800 #include "elf32-target.h"