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 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3383 /* We shouldn't really be seeing these. */
3386 info
->flags
|= DF_STATIC_TLS
;
3390 case R_PPC_DTPMOD32
:
3391 case R_PPC_DTPREL32
:
3395 case R_PPC_TPREL16_LO
:
3396 case R_PPC_TPREL16_HI
:
3397 case R_PPC_TPREL16_HA
:
3399 info
->flags
|= DF_STATIC_TLS
;
3405 && (sec
->flags
& SEC_CODE
) != 0
3406 && (info
->shared
|| info
->pie
)
3407 && htab
->plt_type
== PLT_UNSET
)
3409 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3410 the start of a function, which assembles to a REL32
3411 reference to .got2. If we detect one of these, then
3412 force the old PLT layout because the linker cannot
3413 reliably deduce the GOT pointer value needed for
3417 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
3421 htab
->plt_type
= PLT_OLD
;
3422 htab
->old_bfd
= abfd
;
3425 if (h
== NULL
|| h
== htab
->elf
.hgot
)
3431 case R_PPC_REL14_BRTAKEN
:
3432 case R_PPC_REL14_BRNTAKEN
:
3435 if (h
== htab
->elf
.hgot
)
3437 if (htab
->plt_type
== PLT_UNSET
)
3439 htab
->plt_type
= PLT_OLD
;
3440 htab
->old_bfd
= abfd
;
3449 case R_PPC_ADDR16_LO
:
3450 case R_PPC_ADDR16_HI
:
3451 case R_PPC_ADDR16_HA
:
3453 case R_PPC_ADDR14_BRTAKEN
:
3454 case R_PPC_ADDR14_BRNTAKEN
:
3458 if (h
!= NULL
&& !info
->shared
)
3460 /* We may need a plt entry if the symbol turns out to be
3461 a function defined in a dynamic object. */
3462 if (!update_plt_info (abfd
, h
, NULL
, 0))
3465 /* We may need a copy reloc too. */
3470 /* If we are creating a shared library, and this is a reloc
3471 against a global symbol, or a non PC relative reloc
3472 against a local symbol, then we need to copy the reloc
3473 into the shared library. However, if we are linking with
3474 -Bsymbolic, we do not need to copy a reloc against a
3475 global symbol which is defined in an object we are
3476 including in the link (i.e., DEF_REGULAR is set). At
3477 this point we have not seen all the input files, so it is
3478 possible that DEF_REGULAR is not set now but will be set
3479 later (it is never cleared). In case of a weak definition,
3480 DEF_REGULAR may be cleared later by a strong definition in
3481 a shared library. We account for that possibility below by
3482 storing information in the dyn_relocs field of the hash
3483 table entry. A similar situation occurs when creating
3484 shared libraries and symbol visibility changes render the
3487 If on the other hand, we are creating an executable, we
3488 may need to keep relocations for symbols satisfied by a
3489 dynamic library if we manage to avoid copy relocs for the
3492 && (MUST_BE_DYN_RELOC (r_type
)
3494 && (! info
->symbolic
3495 || h
->root
.type
== bfd_link_hash_defweak
3496 || !h
->def_regular
))))
3497 || (ELIMINATE_COPY_RELOCS
3500 && (h
->root
.type
== bfd_link_hash_defweak
3501 || !h
->def_regular
)))
3503 struct ppc_elf_dyn_relocs
*p
;
3504 struct ppc_elf_dyn_relocs
**head
;
3508 "ppc_elf_check_relocs needs to "
3509 "create relocation for %s\n",
3510 (h
&& h
->root
.root
.string
3511 ? h
->root
.root
.string
: "<unknown>"));
3517 name
= (bfd_elf_string_from_elf_section
3519 elf_elfheader (abfd
)->e_shstrndx
,
3520 elf_section_data (sec
)->rel_hdr
.sh_name
));
3524 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
3525 && strcmp (bfd_get_section_name (abfd
, sec
),
3528 if (htab
->elf
.dynobj
== NULL
)
3529 htab
->elf
.dynobj
= abfd
;
3530 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
3535 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
3536 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
3537 | SEC_ALLOC
| SEC_LOAD
);
3538 sreloc
= bfd_make_section_with_flags (htab
->elf
.dynobj
,
3542 || ! bfd_set_section_alignment (htab
->elf
.dynobj
,
3546 elf_section_data (sec
)->sreloc
= sreloc
;
3549 /* If this is a global symbol, we count the number of
3550 relocations we need for this symbol. */
3553 head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
3557 /* Track dynamic relocs needed for local syms too.
3558 We really need local syms available to do this
3564 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
3569 vpp
= &elf_section_data (s
)->local_dynrel
;
3570 head
= (struct ppc_elf_dyn_relocs
**) vpp
;
3574 if (p
== NULL
|| p
->sec
!= sec
)
3576 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
3587 if (!MUST_BE_DYN_RELOC (r_type
))
3599 /* Merge object attributes from IBFD into OBFD. Raise an error if
3600 there are conflicting attributes. */
3602 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
3604 obj_attribute
*in_attr
;
3605 obj_attribute
*out_attr
;
3607 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
3609 /* This is the first object. Copy the attributes. */
3610 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
3612 /* Use the Tag_null value to indicate the attributes have been
3614 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
3619 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3620 non-conflicting ones. */
3621 in_attr
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
3622 out_attr
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
3623 if (in_attr
[Tag_GNU_Power_ABI_FP
].i
!= out_attr
[Tag_GNU_Power_ABI_FP
].i
)
3625 out_attr
[Tag_GNU_Power_ABI_FP
].type
= 1;
3626 if (out_attr
[Tag_GNU_Power_ABI_FP
].i
== 0)
3627 out_attr
[Tag_GNU_Power_ABI_FP
].i
= in_attr
[Tag_GNU_Power_ABI_FP
].i
;
3628 else if (in_attr
[Tag_GNU_Power_ABI_FP
].i
== 0)
3630 else if (out_attr
[Tag_GNU_Power_ABI_FP
].i
== 1
3631 && in_attr
[Tag_GNU_Power_ABI_FP
].i
== 2)
3633 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
3634 else if (out_attr
[Tag_GNU_Power_ABI_FP
].i
== 2
3635 && in_attr
[Tag_GNU_Power_ABI_FP
].i
== 1)
3637 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
3638 else if (in_attr
[Tag_GNU_Power_ABI_FP
].i
> 2)
3640 (_("Warning: %B uses unknown floating point ABI %d"), ibfd
,
3641 in_attr
[Tag_GNU_Power_ABI_FP
].i
);
3644 (_("Warning: %B uses unknown floating point ABI %d"), obfd
,
3645 out_attr
[Tag_GNU_Power_ABI_FP
].i
);
3648 /* Merge Tag_compatibility attributes and any common GNU ones. */
3649 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
3654 /* Merge backend specific data from an object file to the output
3655 object file when linking. */
3658 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
3664 if (!is_ppc_elf_target (ibfd
->xvec
)
3665 || !is_ppc_elf_target (obfd
->xvec
))
3668 /* Check if we have the same endianess. */
3669 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
3672 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
3675 new_flags
= elf_elfheader (ibfd
)->e_flags
;
3676 old_flags
= elf_elfheader (obfd
)->e_flags
;
3677 if (!elf_flags_init (obfd
))
3679 /* First call, no flags set. */
3680 elf_flags_init (obfd
) = TRUE
;
3681 elf_elfheader (obfd
)->e_flags
= new_flags
;
3684 /* Compatible flags are ok. */
3685 else if (new_flags
== old_flags
)
3688 /* Incompatible flags. */
3691 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3692 to be linked with either. */
3694 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
3695 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
3698 (*_bfd_error_handler
)
3699 (_("%B: compiled with -mrelocatable and linked with "
3700 "modules compiled normally"), ibfd
);
3702 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
3703 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
3706 (*_bfd_error_handler
)
3707 (_("%B: compiled normally and linked with "
3708 "modules compiled with -mrelocatable"), ibfd
);
3711 /* The output is -mrelocatable-lib iff both the input files are. */
3712 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
3713 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
3715 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3716 but each input file is either -mrelocatable or -mrelocatable-lib. */
3717 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
3718 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
3719 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
3720 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
3722 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3723 any module uses it. */
3724 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
3726 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
3727 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
3729 /* Warn about any other mismatches. */
3730 if (new_flags
!= old_flags
)
3733 (*_bfd_error_handler
)
3734 (_("%B: uses different e_flags (0x%lx) fields "
3735 "than previous modules (0x%lx)"),
3736 ibfd
, (long) new_flags
, (long) old_flags
);
3741 bfd_set_error (bfd_error_bad_value
);
3749 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3750 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3752 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3753 struct bfd_link_info
*info
,
3754 enum ppc_elf_plt_type plt_style
,
3757 struct ppc_elf_link_hash_table
*htab
;
3760 htab
= ppc_elf_hash_table (info
);
3762 if (htab
->plt_type
== PLT_UNSET
)
3764 if (plt_style
== PLT_OLD
)
3765 htab
->plt_type
= PLT_OLD
;
3769 enum ppc_elf_plt_type plt_type
= plt_style
;
3771 /* Look through the reloc flags left by ppc_elf_check_relocs.
3772 Use the old style bss plt if a file makes plt calls
3773 without using the new relocs, and if ld isn't given
3774 --secure-plt and we never see REL16 relocs. */
3775 if (plt_type
== PLT_UNSET
)
3777 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
3778 if (is_ppc_elf_target (ibfd
->xvec
))
3780 if (ppc_elf_tdata (ibfd
)->has_rel16
)
3782 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
3785 htab
->old_bfd
= ibfd
;
3789 htab
->plt_type
= plt_type
;
3792 if (htab
->plt_type
== PLT_OLD
&& plt_style
== PLT_NEW
)
3793 info
->callbacks
->info (_("Using bss-plt due to %B"), htab
->old_bfd
);
3795 htab
->emit_stub_syms
= emit_stub_syms
;
3797 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
3799 if (htab
->plt_type
== PLT_NEW
)
3801 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
3802 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3804 /* The new PLT is a loaded section. */
3805 if (htab
->plt
!= NULL
3806 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
3809 /* The new GOT is not executable. */
3810 if (htab
->got
!= NULL
3811 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
3816 /* Stop an unused .glink section from affecting .text alignment. */
3817 if (htab
->glink
!= NULL
3818 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
3821 return htab
->plt_type
== PLT_NEW
;
3824 /* Return the section that should be marked against GC for a given
3828 ppc_elf_gc_mark_hook (asection
*sec
,
3829 struct bfd_link_info
*info
,
3830 Elf_Internal_Rela
*rel
,
3831 struct elf_link_hash_entry
*h
,
3832 Elf_Internal_Sym
*sym
)
3835 switch (ELF32_R_TYPE (rel
->r_info
))
3837 case R_PPC_GNU_VTINHERIT
:
3838 case R_PPC_GNU_VTENTRY
:
3842 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
3845 /* Update the got, plt and dynamic reloc reference counts for the
3846 section being removed. */
3849 ppc_elf_gc_sweep_hook (bfd
*abfd
,
3850 struct bfd_link_info
*info
,
3852 const Elf_Internal_Rela
*relocs
)
3854 struct ppc_elf_link_hash_table
*htab
;
3855 Elf_Internal_Shdr
*symtab_hdr
;
3856 struct elf_link_hash_entry
**sym_hashes
;
3857 bfd_signed_vma
*local_got_refcounts
;
3858 const Elf_Internal_Rela
*rel
, *relend
;
3861 if ((sec
->flags
& SEC_ALLOC
) == 0)
3864 elf_section_data (sec
)->local_dynrel
= NULL
;
3866 htab
= ppc_elf_hash_table (info
);
3867 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3868 sym_hashes
= elf_sym_hashes (abfd
);
3869 local_got_refcounts
= elf_local_got_refcounts (abfd
);
3870 got2
= bfd_get_section_by_name (abfd
, ".got2");
3872 relend
= relocs
+ sec
->reloc_count
;
3873 for (rel
= relocs
; rel
< relend
; rel
++)
3875 unsigned long r_symndx
;
3876 enum elf_ppc_reloc_type r_type
;
3877 struct elf_link_hash_entry
*h
= NULL
;
3879 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3880 if (r_symndx
>= symtab_hdr
->sh_info
)
3882 struct ppc_elf_dyn_relocs
**pp
, *p
;
3883 struct ppc_elf_link_hash_entry
*eh
;
3885 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3886 while (h
->root
.type
== bfd_link_hash_indirect
3887 || h
->root
.type
== bfd_link_hash_warning
)
3888 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3889 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3891 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
3894 /* Everything must go for SEC. */
3900 r_type
= ELF32_R_TYPE (rel
->r_info
);
3903 case R_PPC_GOT_TLSLD16
:
3904 case R_PPC_GOT_TLSLD16_LO
:
3905 case R_PPC_GOT_TLSLD16_HI
:
3906 case R_PPC_GOT_TLSLD16_HA
:
3907 htab
->tlsld_got
.refcount
-= 1;
3910 case R_PPC_GOT_TLSGD16
:
3911 case R_PPC_GOT_TLSGD16_LO
:
3912 case R_PPC_GOT_TLSGD16_HI
:
3913 case R_PPC_GOT_TLSGD16_HA
:
3914 case R_PPC_GOT_TPREL16
:
3915 case R_PPC_GOT_TPREL16_LO
:
3916 case R_PPC_GOT_TPREL16_HI
:
3917 case R_PPC_GOT_TPREL16_HA
:
3918 case R_PPC_GOT_DTPREL16
:
3919 case R_PPC_GOT_DTPREL16_LO
:
3920 case R_PPC_GOT_DTPREL16_HI
:
3921 case R_PPC_GOT_DTPREL16_HA
:
3923 case R_PPC_GOT16_LO
:
3924 case R_PPC_GOT16_HI
:
3925 case R_PPC_GOT16_HA
:
3928 if (h
->got
.refcount
> 0)
3931 else if (local_got_refcounts
!= NULL
)
3933 if (local_got_refcounts
[r_symndx
] > 0)
3934 local_got_refcounts
[r_symndx
]--;
3940 case R_PPC_REL14_BRTAKEN
:
3941 case R_PPC_REL14_BRNTAKEN
:
3943 if (h
== NULL
|| h
== htab
->elf
.hgot
)
3950 case R_PPC_ADDR16_LO
:
3951 case R_PPC_ADDR16_HI
:
3952 case R_PPC_ADDR16_HA
:
3954 case R_PPC_ADDR14_BRTAKEN
:
3955 case R_PPC_ADDR14_BRNTAKEN
:
3962 case R_PPC_PLTREL24
:
3963 case R_PPC_PLTREL32
:
3964 case R_PPC_PLT16_LO
:
3965 case R_PPC_PLT16_HI
:
3966 case R_PPC_PLT16_HA
:
3969 bfd_vma addend
= r_type
== R_PPC_PLTREL24
? rel
->r_addend
: 0;
3970 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
3971 if (ent
->plt
.refcount
> 0)
3972 ent
->plt
.refcount
-= 1;
3983 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3986 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
3988 struct ppc_elf_link_hash_table
*htab
;
3990 htab
= ppc_elf_hash_table (info
);
3991 if (htab
->plt_type
== PLT_NEW
3992 && htab
->plt
!= NULL
3993 && htab
->plt
->output_section
!= NULL
)
3995 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
3996 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
3999 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4000 FALSE
, FALSE
, TRUE
);
4001 return _bfd_elf_tls_setup (obfd
, info
);
4004 /* Run through all the TLS relocs looking for optimization
4008 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
4009 struct bfd_link_info
*info
)
4013 struct ppc_elf_link_hash_table
*htab
;
4015 if (info
->relocatable
|| info
->shared
)
4018 htab
= ppc_elf_hash_table (info
);
4019 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4021 Elf_Internal_Sym
*locsyms
= NULL
;
4022 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
4024 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4025 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
4027 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
4028 int expecting_tls_get_addr
;
4030 /* Read the relocations. */
4031 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
4033 if (relstart
== NULL
)
4036 expecting_tls_get_addr
= 0;
4037 relend
= relstart
+ sec
->reloc_count
;
4038 for (rel
= relstart
; rel
< relend
; rel
++)
4040 enum elf_ppc_reloc_type r_type
;
4041 unsigned long r_symndx
;
4042 struct elf_link_hash_entry
*h
= NULL
;
4044 char tls_set
, tls_clear
;
4045 bfd_boolean is_local
;
4047 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4048 if (r_symndx
>= symtab_hdr
->sh_info
)
4050 struct elf_link_hash_entry
**sym_hashes
;
4052 sym_hashes
= elf_sym_hashes (ibfd
);
4053 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4054 while (h
->root
.type
== bfd_link_hash_indirect
4055 || h
->root
.type
== bfd_link_hash_warning
)
4056 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4064 r_type
= ELF32_R_TYPE (rel
->r_info
);
4067 case R_PPC_GOT_TLSLD16
:
4068 case R_PPC_GOT_TLSLD16_LO
:
4069 case R_PPC_GOT_TLSLD16_HI
:
4070 case R_PPC_GOT_TLSLD16_HA
:
4071 /* These relocs should never be against a symbol
4072 defined in a shared lib. Leave them alone if
4073 that turns out to be the case. */
4074 expecting_tls_get_addr
= 0;
4075 htab
->tlsld_got
.refcount
-= 1;
4082 expecting_tls_get_addr
= 1;
4085 case R_PPC_GOT_TLSGD16
:
4086 case R_PPC_GOT_TLSGD16_LO
:
4087 case R_PPC_GOT_TLSGD16_HI
:
4088 case R_PPC_GOT_TLSGD16_HA
:
4094 tls_set
= TLS_TLS
| TLS_TPRELGD
;
4096 expecting_tls_get_addr
= 1;
4099 case R_PPC_GOT_TPREL16
:
4100 case R_PPC_GOT_TPREL16_LO
:
4101 case R_PPC_GOT_TPREL16_HI
:
4102 case R_PPC_GOT_TPREL16_HA
:
4103 expecting_tls_get_addr
= 0;
4108 tls_clear
= TLS_TPREL
;
4115 case R_PPC_REL14_BRTAKEN
:
4116 case R_PPC_REL14_BRNTAKEN
:
4118 if (expecting_tls_get_addr
4120 && h
== htab
->tls_get_addr
)
4122 struct plt_entry
*ent
= find_plt_ent (h
, NULL
, 0);
4123 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
4124 ent
->plt
.refcount
-= 1;
4126 expecting_tls_get_addr
= 0;
4130 expecting_tls_get_addr
= 0;
4138 /* We managed to get rid of a got entry. */
4139 if (h
->got
.refcount
> 0)
4140 h
->got
.refcount
-= 1;
4142 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
4146 Elf_Internal_Sym
*sym
;
4147 bfd_signed_vma
*lgot_refs
;
4150 if (locsyms
== NULL
)
4152 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4153 if (locsyms
== NULL
)
4154 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
4155 symtab_hdr
->sh_info
,
4156 0, NULL
, NULL
, NULL
);
4157 if (locsyms
== NULL
)
4159 if (elf_section_data (sec
)->relocs
!= relstart
)
4164 sym
= locsyms
+ r_symndx
;
4165 lgot_refs
= elf_local_got_refcounts (ibfd
);
4166 if (lgot_refs
== NULL
)
4170 /* We managed to get rid of a got entry. */
4171 if (lgot_refs
[r_symndx
] > 0)
4172 lgot_refs
[r_symndx
] -= 1;
4174 lgot_masks
= (char *) (lgot_refs
+ symtab_hdr
->sh_info
);
4175 tls_mask
= &lgot_masks
[r_symndx
];
4178 *tls_mask
|= tls_set
;
4179 *tls_mask
&= ~tls_clear
;
4182 if (elf_section_data (sec
)->relocs
!= relstart
)
4187 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
4189 if (!info
->keep_memory
)
4192 symtab_hdr
->contents
= (unsigned char *) locsyms
;
4198 /* Adjust a symbol defined by a dynamic object and referenced by a
4199 regular object. The current definition is in some section of the
4200 dynamic object, but we're not including those sections. We have to
4201 change the definition to something the rest of the link can
4205 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4206 struct elf_link_hash_entry
*h
)
4208 struct ppc_elf_link_hash_table
*htab
;
4212 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4213 h
->root
.root
.string
);
4216 /* Make sure we know what is going on here. */
4217 htab
= ppc_elf_hash_table (info
);
4218 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
4220 || h
->u
.weakdef
!= NULL
4223 && !h
->def_regular
)));
4225 /* Deal with function syms. */
4226 if (h
->type
== STT_FUNC
4229 /* Clear procedure linkage table information for any symbol that
4230 won't need a .plt entry. */
4231 struct plt_entry
*ent
;
4232 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4233 if (ent
->plt
.refcount
> 0)
4236 || SYMBOL_CALLS_LOCAL (info
, h
)
4237 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4238 && h
->root
.type
== bfd_link_hash_undefweak
))
4240 /* A PLT entry is not required/allowed when:
4242 1. We are not using ld.so; because then the PLT entry
4243 can't be set up, so we can't use one. In this case,
4244 ppc_elf_adjust_dynamic_symbol won't even be called.
4246 2. GC has rendered the entry unused.
4248 3. We know for certain that a call to this symbol
4249 will go to this object, or will remain undefined. */
4250 h
->plt
.plist
= NULL
;
4256 h
->plt
.plist
= NULL
;
4258 /* If this is a weak symbol, and there is a real definition, the
4259 processor independent code will have arranged for us to see the
4260 real definition first, and we can just use the same value. */
4261 if (h
->u
.weakdef
!= NULL
)
4263 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4264 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4265 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4266 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4267 if (ELIMINATE_COPY_RELOCS
)
4268 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
4272 /* This is a reference to a symbol defined by a dynamic object which
4273 is not a function. */
4275 /* If we are creating a shared library, we must presume that the
4276 only references to the symbol are via the global offset table.
4277 For such cases we need not do anything here; the relocations will
4278 be handled correctly by relocate_section. */
4282 /* If there are no references to this symbol that do not use the
4283 GOT, we don't need to generate a copy reloc. */
4284 if (!h
->non_got_ref
)
4287 /* If we didn't find any dynamic relocs in read-only sections, then we'll
4288 be keeping the dynamic relocs and avoiding the copy reloc. We can't
4289 do this if there are any small data relocations. */
4290 if (ELIMINATE_COPY_RELOCS
4291 && !ppc_elf_hash_entry (h
)->has_sda_refs
)
4293 struct ppc_elf_dyn_relocs
*p
;
4294 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4296 s
= p
->sec
->output_section
;
4297 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
4310 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
4311 h
->root
.root
.string
);
4315 /* We must allocate the symbol in our .dynbss section, which will
4316 become part of the .bss section of the executable. There will be
4317 an entry for this symbol in the .dynsym section. The dynamic
4318 object will contain position independent code, so all references
4319 from the dynamic object to this symbol will go through the global
4320 offset table. The dynamic linker will use the .dynsym entry to
4321 determine the address it must put in the global offset table, so
4322 both the dynamic object and the regular object will refer to the
4323 same memory location for the variable.
4325 Of course, if the symbol is referenced using SDAREL relocs, we
4326 must instead allocate it in .sbss. */
4328 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4332 BFD_ASSERT (s
!= NULL
);
4334 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4335 copy the initial value out of the dynamic object and into the
4336 runtime process image. We need to remember the offset into the
4337 .rela.bss section we are going to use. */
4338 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4342 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
4343 srel
= htab
->relsbss
;
4345 srel
= htab
->relbss
;
4346 BFD_ASSERT (srel
!= NULL
);
4347 srel
->size
+= sizeof (Elf32_External_Rela
);
4351 return _bfd_elf_adjust_dynamic_copy (h
, s
);
4354 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4355 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4356 specifying the addend on the plt relocation. For -fpic code, the sym
4357 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4358 xxxxxxxx.got2.plt_pic32.<callee>. */
4361 add_stub_sym (struct plt_entry
*ent
,
4362 struct elf_link_hash_entry
*h
,
4363 struct bfd_link_info
*info
)
4365 struct elf_link_hash_entry
*sh
;
4366 size_t len1
, len2
, len3
;
4369 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
4371 if (info
->shared
|| info
->pie
)
4372 stub
= ".plt_pic32.";
4374 stub
= ".plt_call32.";
4376 len1
= strlen (h
->root
.root
.string
);
4377 len2
= strlen (stub
);
4380 len3
= strlen (ent
->sec
->name
);
4381 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
4384 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
4386 memcpy (name
+ 8, ent
->sec
->name
, len3
);
4387 memcpy (name
+ 8 + len3
, stub
, len2
);
4388 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
4389 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
4392 if (sh
->root
.type
== bfd_link_hash_new
)
4394 sh
->root
.type
= bfd_link_hash_defined
;
4395 sh
->root
.u
.def
.section
= htab
->glink
;
4396 sh
->root
.u
.def
.value
= ent
->glink_offset
;
4397 sh
->ref_regular
= 1;
4398 sh
->def_regular
= 1;
4399 sh
->ref_regular_nonweak
= 1;
4400 sh
->forced_local
= 1;
4406 /* Allocate NEED contiguous space in .got, and return the offset.
4407 Handles allocation of the got header when crossing 32k. */
4410 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
4413 unsigned int max_before_header
;
4415 if (htab
->plt_type
== PLT_VXWORKS
)
4417 where
= htab
->got
->size
;
4418 htab
->got
->size
+= need
;
4422 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
4423 if (need
<= htab
->got_gap
)
4425 where
= max_before_header
- htab
->got_gap
;
4426 htab
->got_gap
-= need
;
4430 if (htab
->got
->size
+ need
> max_before_header
4431 && htab
->got
->size
<= max_before_header
)
4433 htab
->got_gap
= max_before_header
- htab
->got
->size
;
4434 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
4436 where
= htab
->got
->size
;
4437 htab
->got
->size
+= need
;
4443 /* Allocate space in associated reloc sections for dynamic relocs. */
4446 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
4448 struct bfd_link_info
*info
= inf
;
4449 struct ppc_elf_link_hash_entry
*eh
;
4450 struct ppc_elf_link_hash_table
*htab
;
4451 struct ppc_elf_dyn_relocs
*p
;
4453 if (h
->root
.type
== bfd_link_hash_indirect
)
4456 if (h
->root
.type
== bfd_link_hash_warning
)
4457 /* When warning symbols are created, they **replace** the "real"
4458 entry in the hash table, thus we never get to see the real
4459 symbol in a hash traversal. So look at it now. */
4460 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4462 htab
= ppc_elf_hash_table (info
);
4463 if (htab
->elf
.dynamic_sections_created
)
4465 struct plt_entry
*ent
;
4466 bfd_boolean doneone
= FALSE
;
4467 bfd_vma plt_offset
= 0, glink_offset
= 0;
4469 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4470 if (ent
->plt
.refcount
> 0)
4472 /* Make sure this symbol is output as a dynamic symbol. */
4473 if (h
->dynindx
== -1
4474 && !h
->forced_local
)
4476 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4481 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
4483 asection
*s
= htab
->plt
;
4485 if (htab
->plt_type
== PLT_NEW
)
4489 plt_offset
= s
->size
;
4492 ent
->plt
.offset
= plt_offset
;
4495 if (!doneone
|| info
->shared
|| info
->pie
)
4497 glink_offset
= s
->size
;
4498 s
->size
+= GLINK_ENTRY_SIZE
;
4504 h
->root
.u
.def
.section
= s
;
4505 h
->root
.u
.def
.value
= glink_offset
;
4507 ent
->glink_offset
= glink_offset
;
4509 if (htab
->emit_stub_syms
4510 && !add_stub_sym (ent
, h
, info
))
4517 /* If this is the first .plt entry, make room
4518 for the special first entry. */
4520 s
->size
+= htab
->plt_initial_entry_size
;
4522 /* The PowerPC PLT is actually composed of two
4523 parts, the first part is 2 words (for a load
4524 and a jump), and then there is a remaining
4525 word available at the end. */
4526 plt_offset
= (htab
->plt_initial_entry_size
4527 + (htab
->plt_slot_size
4529 - htab
->plt_initial_entry_size
)
4530 / htab
->plt_entry_size
)));
4532 /* If this symbol is not defined in a regular
4533 file, and we are not generating a shared
4534 library, then set the symbol to this location
4535 in the .plt. This is required to make
4536 function pointers compare as equal between
4537 the normal executable and the shared library. */
4541 h
->root
.u
.def
.section
= s
;
4542 h
->root
.u
.def
.value
= plt_offset
;
4545 /* Make room for this entry. */
4546 s
->size
+= htab
->plt_entry_size
;
4547 /* After the 8192nd entry, room for two entries
4549 if (htab
->plt_type
== PLT_OLD
4550 && (s
->size
- htab
->plt_initial_entry_size
)
4551 / htab
->plt_entry_size
4552 > PLT_NUM_SINGLE_ENTRIES
)
4553 s
->size
+= htab
->plt_entry_size
;
4555 ent
->plt
.offset
= plt_offset
;
4558 /* We also need to make an entry in the .rela.plt section. */
4561 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
4563 if (htab
->plt_type
== PLT_VXWORKS
)
4565 /* Allocate space for the unloaded relocations. */
4569 == (bfd_vma
) htab
->plt_initial_entry_size
)
4571 htab
->srelplt2
->size
4572 += sizeof (Elf32_External_Rela
)
4573 * VXWORKS_PLTRESOLVE_RELOCS
;
4576 htab
->srelplt2
->size
4577 += sizeof (Elf32_External_Rela
)
4578 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
;
4581 /* Every PLT entry has an associated GOT entry in
4583 htab
->sgotplt
->size
+= 4;
4589 ent
->plt
.offset
= (bfd_vma
) -1;
4592 ent
->plt
.offset
= (bfd_vma
) -1;
4596 h
->plt
.plist
= NULL
;
4602 h
->plt
.plist
= NULL
;
4606 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4607 if (eh
->elf
.got
.refcount
> 0)
4609 /* Make sure this symbol is output as a dynamic symbol. */
4610 if (eh
->elf
.dynindx
== -1
4611 && !eh
->elf
.forced_local
)
4613 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
4617 if (eh
->tls_mask
== (TLS_TLS
| TLS_LD
)
4618 && !eh
->elf
.def_dynamic
)
4619 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4620 eh
->elf
.got
.offset
= (bfd_vma
) -1;
4624 unsigned int need
= 0;
4625 if ((eh
->tls_mask
& TLS_TLS
) != 0)
4627 if ((eh
->tls_mask
& TLS_LD
) != 0)
4629 if ((eh
->tls_mask
& TLS_GD
) != 0)
4631 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
4633 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
4638 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
4639 dyn
= htab
->elf
.dynamic_sections_created
;
4641 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
4642 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
4643 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
4645 /* All the entries we allocated need relocs.
4646 Except LD only needs one. */
4647 if ((eh
->tls_mask
& TLS_LD
) != 0)
4649 htab
->relgot
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
4654 eh
->elf
.got
.offset
= (bfd_vma
) -1;
4656 if (eh
->dyn_relocs
== NULL
)
4659 /* In the shared -Bsymbolic case, discard space allocated for
4660 dynamic pc-relative relocs against symbols which turn out to be
4661 defined in regular objects. For the normal shared case, discard
4662 space for relocs that have become local due to symbol visibility
4667 /* Relocs that use pc_count are those that appear on a call insn,
4668 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4669 generated via assembly. We want calls to protected symbols to
4670 resolve directly to the function rather than going via the plt.
4671 If people want function pointer comparisons to work as expected
4672 then they should avoid writing weird assembly. */
4673 if (SYMBOL_CALLS_LOCAL (info
, h
))
4675 struct ppc_elf_dyn_relocs
**pp
;
4677 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
4679 p
->count
-= p
->pc_count
;
4688 /* Also discard relocs on undefined weak syms with non-default
4690 if (eh
->dyn_relocs
!= NULL
4691 && h
->root
.type
== bfd_link_hash_undefweak
)
4693 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
4694 eh
->dyn_relocs
= NULL
;
4696 /* Make sure undefined weak symbols are output as a dynamic
4698 else if (h
->dynindx
== -1
4699 && !h
->forced_local
)
4701 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4706 else if (ELIMINATE_COPY_RELOCS
)
4708 /* For the non-shared case, discard space for relocs against
4709 symbols which turn out to need copy relocs or are not
4716 /* Make sure this symbol is output as a dynamic symbol.
4717 Undefined weak syms won't yet be marked as dynamic. */
4718 if (h
->dynindx
== -1
4719 && !h
->forced_local
)
4721 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
4725 /* If that succeeded, we know we'll be keeping all the
4727 if (h
->dynindx
!= -1)
4731 eh
->dyn_relocs
= NULL
;
4736 /* Finally, allocate space. */
4737 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4739 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
4740 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
4746 /* Find any dynamic relocs that apply to read-only sections. */
4749 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *info
)
4751 struct ppc_elf_dyn_relocs
*p
;
4753 if (h
->root
.type
== bfd_link_hash_indirect
)
4756 if (h
->root
.type
== bfd_link_hash_warning
)
4757 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4759 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4761 asection
*s
= p
->sec
->output_section
;
4764 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
4765 == (SEC_READONLY
| SEC_ALLOC
)))
4767 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
4769 /* Not an error, just cut short the traversal. */
4776 /* Set the sizes of the dynamic sections. */
4779 ppc_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4780 struct bfd_link_info
*info
)
4782 struct ppc_elf_link_hash_table
*htab
;
4788 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
4791 htab
= ppc_elf_hash_table (info
);
4792 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
4794 if (elf_hash_table (info
)->dynamic_sections_created
)
4796 /* Set the contents of the .interp section to the interpreter. */
4797 if (info
->executable
)
4799 s
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".interp");
4800 BFD_ASSERT (s
!= NULL
);
4801 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
4802 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
4806 if (htab
->plt_type
== PLT_OLD
)
4807 htab
->got_header_size
= 16;
4808 else if (htab
->plt_type
== PLT_NEW
)
4809 htab
->got_header_size
= 12;
4811 /* Set up .got offsets for local syms, and space for local dynamic
4813 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4815 bfd_signed_vma
*local_got
;
4816 bfd_signed_vma
*end_local_got
;
4818 bfd_size_type locsymcount
;
4819 Elf_Internal_Shdr
*symtab_hdr
;
4821 if (!is_ppc_elf_target (ibfd
->xvec
))
4824 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
4826 struct ppc_elf_dyn_relocs
*p
;
4828 for (p
= ((struct ppc_elf_dyn_relocs
*)
4829 elf_section_data (s
)->local_dynrel
);
4833 if (!bfd_is_abs_section (p
->sec
)
4834 && bfd_is_abs_section (p
->sec
->output_section
))
4836 /* Input section has been discarded, either because
4837 it is a copy of a linkonce section or due to
4838 linker script /DISCARD/, so we'll be discarding
4841 else if (p
->count
!= 0)
4843 elf_section_data (p
->sec
)->sreloc
->size
4844 += p
->count
* sizeof (Elf32_External_Rela
);
4845 if ((p
->sec
->output_section
->flags
4846 & (SEC_READONLY
| SEC_ALLOC
))
4847 == (SEC_READONLY
| SEC_ALLOC
))
4848 info
->flags
|= DF_TEXTREL
;
4853 local_got
= elf_local_got_refcounts (ibfd
);
4857 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
4858 locsymcount
= symtab_hdr
->sh_info
;
4859 end_local_got
= local_got
+ locsymcount
;
4860 lgot_masks
= (char *) end_local_got
;
4861 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
4864 if (*lgot_masks
== (TLS_TLS
| TLS_LD
))
4866 /* If just an LD reloc, we'll just use
4867 htab->tlsld_got.offset. */
4868 htab
->tlsld_got
.refcount
+= 1;
4869 *local_got
= (bfd_vma
) -1;
4873 unsigned int need
= 0;
4874 if ((*lgot_masks
& TLS_TLS
) != 0)
4876 if ((*lgot_masks
& TLS_GD
) != 0)
4878 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
4880 if ((*lgot_masks
& TLS_DTPREL
) != 0)
4885 *local_got
= allocate_got (htab
, need
);
4887 htab
->relgot
->size
+= (need
4888 * (sizeof (Elf32_External_Rela
) / 4));
4892 *local_got
= (bfd_vma
) -1;
4895 if (htab
->tlsld_got
.refcount
> 0)
4897 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
4899 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
4902 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
4904 /* Allocate space for global sym dynamic relocs. */
4905 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
4907 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
4909 unsigned int g_o_t
= 32768;
4911 /* If we haven't allocated the header, do so now. When we get here,
4912 for old plt/got the got size will be 0 to 32764 (not allocated),
4913 or 32780 to 65536 (header allocated). For new plt/got, the
4914 corresponding ranges are 0 to 32768 and 32780 to 65536. */
4915 if (htab
->got
->size
<= 32768)
4917 g_o_t
= htab
->got
->size
;
4918 if (htab
->plt_type
== PLT_OLD
)
4920 htab
->got
->size
+= htab
->got_header_size
;
4923 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
4926 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
4928 htab
->glink_pltresolve
= htab
->glink
->size
;
4929 /* Space for the branch table. */
4930 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
4931 /* Pad out to align the start of PLTresolve. */
4932 htab
->glink
->size
+= -htab
->glink
->size
& 15;
4933 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
4935 if (htab
->emit_stub_syms
)
4937 struct elf_link_hash_entry
*sh
;
4938 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
4939 TRUE
, FALSE
, FALSE
);
4942 if (sh
->root
.type
== bfd_link_hash_new
)
4944 sh
->root
.type
= bfd_link_hash_defined
;
4945 sh
->root
.u
.def
.section
= htab
->glink
;
4946 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
4947 sh
->ref_regular
= 1;
4948 sh
->def_regular
= 1;
4949 sh
->ref_regular_nonweak
= 1;
4950 sh
->forced_local
= 1;
4953 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
4954 TRUE
, FALSE
, FALSE
);
4957 if (sh
->root
.type
== bfd_link_hash_new
)
4959 sh
->root
.type
= bfd_link_hash_defined
;
4960 sh
->root
.u
.def
.section
= htab
->glink
;
4961 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
4962 sh
->ref_regular
= 1;
4963 sh
->def_regular
= 1;
4964 sh
->ref_regular_nonweak
= 1;
4965 sh
->forced_local
= 1;
4971 /* We've now determined the sizes of the various dynamic sections.
4972 Allocate memory for them. */
4974 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
4976 bfd_boolean strip_section
= TRUE
;
4978 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
4984 || s
== htab
->sgotplt
4986 || s
== htab
->dynbss
4987 || s
== htab
->dynsbss
)
4989 /* We'd like to strip these sections if they aren't needed, but if
4990 we've exported dynamic symbols from them we must leave them.
4991 It's too late to tell BFD to get rid of the symbols. */
4992 if ((s
== htab
->plt
|| s
== htab
->got
) && htab
->elf
.hplt
!= NULL
)
4993 strip_section
= FALSE
;
4994 /* Strip this section if we don't need it; see the
4997 else if (s
== htab
->sdata
[0].section
4998 || s
== htab
->sdata
[1].section
)
5000 /* Strip these too. */
5002 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
5006 /* Remember whether there are any relocation sections. */
5009 /* We use the reloc_count field as a counter if we need
5010 to copy relocs into the output file. */
5016 /* It's not one of our sections, so don't allocate space. */
5020 if (s
->size
== 0 && strip_section
)
5022 /* If we don't need this section, strip it from the
5023 output file. This is mostly to handle .rela.bss and
5024 .rela.plt. We must create both sections in
5025 create_dynamic_sections, because they must be created
5026 before the linker maps input sections to output
5027 sections. The linker does that before
5028 adjust_dynamic_symbol is called, and it is that
5029 function which decides whether anything needs to go
5030 into these sections. */
5031 s
->flags
|= SEC_EXCLUDE
;
5035 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
5038 /* Allocate memory for the section contents. */
5039 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
5040 if (s
->contents
== NULL
)
5044 if (htab
->elf
.dynamic_sections_created
)
5046 /* Add some entries to the .dynamic section. We fill in the
5047 values later, in ppc_elf_finish_dynamic_sections, but we
5048 must add the entries now so that we get the correct size for
5049 the .dynamic section. The DT_DEBUG entry is filled in by the
5050 dynamic linker and used by the debugger. */
5051 #define add_dynamic_entry(TAG, VAL) \
5052 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5054 if (info
->executable
)
5056 if (!add_dynamic_entry (DT_DEBUG
, 0))
5060 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
5062 if (!add_dynamic_entry (DT_PLTGOT
, 0)
5063 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
5064 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
5065 || !add_dynamic_entry (DT_JMPREL
, 0))
5069 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
5071 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
5077 if (!add_dynamic_entry (DT_RELA
, 0)
5078 || !add_dynamic_entry (DT_RELASZ
, 0)
5079 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
5083 /* If any dynamic relocs apply to a read-only section, then we
5084 need a DT_TEXTREL entry. */
5085 if ((info
->flags
& DF_TEXTREL
) == 0)
5086 elf_link_hash_traverse (elf_hash_table (info
), readonly_dynrelocs
,
5089 if ((info
->flags
& DF_TEXTREL
) != 0)
5091 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5095 #undef add_dynamic_entry
5100 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5102 static const int shared_stub_entry
[] =
5104 0x7c0802a6, /* mflr 0 */
5105 0x429f0005, /* bcl 20, 31, .Lxxx */
5106 0x7d6802a6, /* mflr 11 */
5107 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5108 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5109 0x7c0803a6, /* mtlr 0 */
5110 0x7d6903a6, /* mtctr 11 */
5111 0x4e800420, /* bctr */
5114 static const int stub_entry
[] =
5116 0x3d600000, /* lis 11,xxx@ha */
5117 0x396b0000, /* addi 11,11,xxx@l */
5118 0x7d6903a6, /* mtctr 11 */
5119 0x4e800420, /* bctr */
5123 ppc_elf_relax_section (bfd
*abfd
,
5125 struct bfd_link_info
*link_info
,
5130 struct one_fixup
*next
;
5136 Elf_Internal_Shdr
*symtab_hdr
;
5137 bfd_byte
*contents
= NULL
;
5138 Elf_Internal_Sym
*isymbuf
= NULL
;
5139 Elf_Internal_Rela
*internal_relocs
= NULL
;
5140 Elf_Internal_Rela
*irel
, *irelend
;
5141 struct one_fixup
*fixups
= NULL
;
5142 bfd_boolean changed
;
5143 struct ppc_elf_link_hash_table
*htab
;
5144 bfd_size_type trampoff
;
5149 /* Nothing to do if there are no relocations, and no need to do
5150 anything with non-alloc sections. */
5151 if ((isec
->flags
& SEC_ALLOC
) == 0
5152 || (isec
->flags
& SEC_RELOC
) == 0
5153 || isec
->reloc_count
== 0)
5156 trampoff
= (isec
->size
+ 3) & (bfd_vma
) -4;
5157 /* Space for a branch around any trampolines. */
5160 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5162 /* Get a copy of the native relocations. */
5163 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
5164 link_info
->keep_memory
);
5165 if (internal_relocs
== NULL
)
5168 htab
= ppc_elf_hash_table (link_info
);
5169 got2
= bfd_get_section_by_name (abfd
, ".got2");
5171 irelend
= internal_relocs
+ isec
->reloc_count
;
5172 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
5174 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
5175 bfd_vma symaddr
, reladdr
, toff
, roff
;
5177 struct one_fixup
*f
;
5178 size_t insn_offset
= 0;
5179 bfd_vma max_branch_offset
, val
;
5182 unsigned char sym_type
;
5187 case R_PPC_LOCAL24PC
:
5188 case R_PPC_PLTREL24
:
5189 max_branch_offset
= 1 << 25;
5193 case R_PPC_REL14_BRTAKEN
:
5194 case R_PPC_REL14_BRNTAKEN
:
5195 max_branch_offset
= 1 << 15;
5202 /* Get the value of the symbol referred to by the reloc. */
5203 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
5205 /* A local symbol. */
5206 Elf_Internal_Sym
*isym
;
5208 /* Read this BFD's local symbols. */
5209 if (isymbuf
== NULL
)
5211 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5212 if (isymbuf
== NULL
)
5213 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
5214 symtab_hdr
->sh_info
, 0,
5219 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
5220 if (isym
->st_shndx
== SHN_UNDEF
)
5221 continue; /* We can't do anything with undefined symbols. */
5222 else if (isym
->st_shndx
== SHN_ABS
)
5223 tsec
= bfd_abs_section_ptr
;
5224 else if (isym
->st_shndx
== SHN_COMMON
)
5225 tsec
= bfd_com_section_ptr
;
5227 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5229 toff
= isym
->st_value
;
5230 sym_type
= ELF_ST_TYPE (isym
->st_info
);
5234 /* Global symbol handling. */
5236 struct elf_link_hash_entry
*h
;
5238 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
5239 h
= elf_sym_hashes (abfd
)[indx
];
5241 while (h
->root
.type
== bfd_link_hash_indirect
5242 || h
->root
.type
== bfd_link_hash_warning
)
5243 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5247 if (r_type
== R_PPC_PLTREL24
5248 && htab
->plt
!= NULL
)
5250 struct plt_entry
*ent
= find_plt_ent (h
, got2
, irel
->r_addend
);
5254 if (htab
->plt_type
== PLT_NEW
)
5257 toff
= ent
->glink_offset
;
5262 toff
= ent
->plt
.offset
;
5268 else if (h
->root
.type
== bfd_link_hash_defined
5269 || h
->root
.type
== bfd_link_hash_defweak
)
5271 tsec
= h
->root
.u
.def
.section
;
5272 toff
= h
->root
.u
.def
.value
;
5280 /* If the branch and target are in the same section, you have
5281 no hope of adding stubs. We'll error out later should the
5286 /* There probably isn't any reason to handle symbols in
5287 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5288 attribute for a code section, and we are only looking at
5289 branches. However, implement it correctly here as a
5290 reference for other target relax_section functions. */
5291 if (0 && tsec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
5293 /* At this stage in linking, no SEC_MERGE symbol has been
5294 adjusted, so all references to such symbols need to be
5295 passed through _bfd_merged_section_offset. (Later, in
5296 relocate_section, all SEC_MERGE symbols *except* for
5297 section symbols have been adjusted.)
5299 gas may reduce relocations against symbols in SEC_MERGE
5300 sections to a relocation against the section symbol when
5301 the original addend was zero. When the reloc is against
5302 a section symbol we should include the addend in the
5303 offset passed to _bfd_merged_section_offset, since the
5304 location of interest is the original symbol. On the
5305 other hand, an access to "sym+addend" where "sym" is not
5306 a section symbol should not include the addend; Such an
5307 access is presumed to be an offset from "sym"; The
5308 location of interest is just "sym". */
5309 if (sym_type
== STT_SECTION
)
5310 toff
+= irel
->r_addend
;
5312 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
5313 elf_section_data (tsec
)->sec_info
,
5316 if (sym_type
!= STT_SECTION
)
5317 toff
+= irel
->r_addend
;
5319 /* PLTREL24 addends are special. */
5320 else if (r_type
!= R_PPC_PLTREL24
)
5321 toff
+= irel
->r_addend
;
5323 /* Attempted -shared link of non-pic code loses. */
5324 if (tsec
->output_section
== NULL
)
5327 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
5329 roff
= irel
->r_offset
;
5330 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
5332 /* If the branch is in range, no need to do anything. */
5333 if (symaddr
- reladdr
+ max_branch_offset
< 2 * max_branch_offset
)
5336 /* Look for an existing fixup to this address. */
5337 for (f
= fixups
; f
; f
= f
->next
)
5338 if (f
->tsec
== tsec
&& f
->toff
== toff
)
5344 unsigned long stub_rtype
;
5346 val
= trampoff
- roff
;
5347 if (val
>= max_branch_offset
)
5348 /* Oh dear, we can't reach a trampoline. Don't try to add
5349 one. We'll report an error later. */
5352 if (link_info
->shared
)
5354 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
5356 stub_rtype
= R_PPC_RELAX32PC
;
5360 size
= 4 * ARRAY_SIZE (stub_entry
);
5362 stub_rtype
= R_PPC_RELAX32
;
5365 if (R_PPC_RELAX32_PLT
- R_PPC_RELAX32
5366 != R_PPC_RELAX32PC_PLT
- R_PPC_RELAX32PC
)
5368 if (tsec
== htab
->plt
5369 || tsec
== htab
->glink
)
5370 stub_rtype
+= R_PPC_RELAX32_PLT
- R_PPC_RELAX32
;
5372 /* Hijack the old relocation. Since we need two
5373 relocations for this use a "composite" reloc. */
5374 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
5376 irel
->r_offset
= trampoff
+ insn_offset
;
5378 /* Record the fixup so we don't do it again this section. */
5379 f
= bfd_malloc (sizeof (*f
));
5383 f
->trampoff
= trampoff
;
5390 val
= f
->trampoff
- roff
;
5391 if (val
>= max_branch_offset
)
5394 /* Nop out the reloc, since we're finalizing things here. */
5395 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
5398 /* Get the section contents. */
5399 if (contents
== NULL
)
5401 /* Get cached copy if it exists. */
5402 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
5403 contents
= elf_section_data (isec
)->this_hdr
.contents
;
5406 /* Go get them off disk. */
5407 if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
5412 /* Fix up the existing branch to hit the trampoline. */
5413 hit_addr
= contents
+ roff
;
5417 case R_PPC_LOCAL24PC
:
5418 case R_PPC_PLTREL24
:
5419 t0
= bfd_get_32 (abfd
, hit_addr
);
5421 t0
|= val
& 0x3fffffc;
5422 bfd_put_32 (abfd
, t0
, hit_addr
);
5426 case R_PPC_REL14_BRTAKEN
:
5427 case R_PPC_REL14_BRNTAKEN
:
5428 t0
= bfd_get_32 (abfd
, hit_addr
);
5431 bfd_put_32 (abfd
, t0
, hit_addr
);
5436 /* Write out the trampolines. */
5437 changed
= fixups
!= NULL
;
5447 struct one_fixup
*f
= fixups
;
5448 fixups
= fixups
->next
;
5453 contents
= bfd_realloc (contents
, trampoff
);
5454 if (contents
== NULL
)
5457 isec
->size
= (isec
->size
+ 3) & (bfd_vma
) -4;
5458 /* Branch around the trampolines. */
5459 val
= trampoff
- isec
->size
+ 0x48000000;
5460 dest
= contents
+ isec
->size
;
5461 isec
->size
= trampoff
;
5462 bfd_put_32 (abfd
, val
, dest
);
5465 if (link_info
->shared
)
5467 stub
= shared_stub_entry
;
5468 size
= ARRAY_SIZE (shared_stub_entry
);
5473 size
= ARRAY_SIZE (stub_entry
);
5477 while (dest
< contents
+ trampoff
)
5479 bfd_put_32 (abfd
, stub
[i
], dest
);
5485 BFD_ASSERT (i
== 0);
5489 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5491 if (! link_info
->keep_memory
)
5495 /* Cache the symbols for elf_link_input_bfd. */
5496 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
5500 if (contents
!= NULL
5501 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
5503 if (!changed
&& !link_info
->keep_memory
)
5507 /* Cache the section contents for elf_link_input_bfd. */
5508 elf_section_data (isec
)->this_hdr
.contents
= contents
;
5512 if (elf_section_data (isec
)->relocs
!= internal_relocs
)
5515 free (internal_relocs
);
5517 elf_section_data (isec
)->relocs
= internal_relocs
;
5524 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
5526 if (contents
!= NULL
5527 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
5529 if (internal_relocs
!= NULL
5530 && elf_section_data (isec
)->relocs
!= internal_relocs
)
5531 free (internal_relocs
);
5535 /* What to do when ld finds relocations against symbols defined in
5536 discarded sections. */
5539 ppc_elf_action_discarded (asection
*sec
)
5541 if (strcmp (".fixup", sec
->name
) == 0)
5544 if (strcmp (".got2", sec
->name
) == 0)
5547 return _bfd_elf_default_action_discarded (sec
);
5550 /* Fill in the address for a pointer generated in a linker section. */
5553 elf_finish_pointer_linker_section (bfd
*input_bfd
,
5554 elf_linker_section_t
*lsect
,
5555 struct elf_link_hash_entry
*h
,
5557 const Elf_Internal_Rela
*rel
)
5559 elf_linker_section_pointers_t
*linker_section_ptr
;
5561 BFD_ASSERT (lsect
!= NULL
);
5565 /* Handle global symbol. */
5566 struct ppc_elf_link_hash_entry
*eh
;
5568 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5569 BFD_ASSERT (eh
->elf
.def_regular
);
5570 linker_section_ptr
= eh
->linker_section_pointer
;
5574 /* Handle local symbol. */
5575 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
5577 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
5578 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
5581 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
5584 BFD_ASSERT (linker_section_ptr
!= NULL
);
5586 /* Offset will always be a multiple of four, so use the bottom bit
5587 as a "written" flag. */
5588 if ((linker_section_ptr
->offset
& 1) == 0)
5590 bfd_put_32 (lsect
->section
->owner
,
5591 relocation
+ linker_section_ptr
->addend
,
5592 lsect
->section
->contents
+ linker_section_ptr
->offset
);
5593 linker_section_ptr
->offset
+= 1;
5596 relocation
= (lsect
->section
->output_offset
5597 + linker_section_ptr
->offset
- 1
5602 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5603 lsect
->name
, (long) relocation
, (long) relocation
);
5606 /* Subtract out the addend, because it will get added back in by the normal
5608 return relocation
- linker_section_ptr
->addend
;
5611 /* The RELOCATE_SECTION function is called by the ELF backend linker
5612 to handle the relocations for a section.
5614 The relocs are always passed as Rela structures; if the section
5615 actually uses Rel structures, the r_addend field will always be
5618 This function is responsible for adjust the section contents as
5619 necessary, and (if using Rela relocs and generating a
5620 relocatable output file) adjusting the reloc addend as
5623 This function does not have to worry about setting the reloc
5624 address or the reloc symbol index.
5626 LOCAL_SYMS is a pointer to the swapped in local symbols.
5628 LOCAL_SECTIONS is an array giving the section in the input file
5629 corresponding to the st_shndx field of each local symbol.
5631 The global hash table entry for the global symbols can be found
5632 via elf_sym_hashes (input_bfd).
5634 When generating relocatable output, this function must handle
5635 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5636 going to be the section symbol corresponding to the output
5637 section, which means that the addend must be adjusted
5641 ppc_elf_relocate_section (bfd
*output_bfd
,
5642 struct bfd_link_info
*info
,
5644 asection
*input_section
,
5646 Elf_Internal_Rela
*relocs
,
5647 Elf_Internal_Sym
*local_syms
,
5648 asection
**local_sections
)
5650 Elf_Internal_Shdr
*symtab_hdr
;
5651 struct elf_link_hash_entry
**sym_hashes
;
5652 struct ppc_elf_link_hash_table
*htab
;
5653 Elf_Internal_Rela
*rel
;
5654 Elf_Internal_Rela
*relend
;
5655 Elf_Internal_Rela outrel
;
5657 asection
*got2
, *sreloc
= NULL
;
5658 bfd_vma
*local_got_offsets
;
5659 bfd_boolean ret
= TRUE
;
5660 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
5663 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5664 "%ld relocations%s",
5665 input_bfd
, input_section
,
5666 (long) input_section
->reloc_count
,
5667 (info
->relocatable
) ? " (relocatable)" : "");
5670 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
5672 /* Initialize howto table if not already done. */
5673 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
5674 ppc_elf_howto_init ();
5676 htab
= ppc_elf_hash_table (info
);
5677 local_got_offsets
= elf_local_got_offsets (input_bfd
);
5678 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
5679 sym_hashes
= elf_sym_hashes (input_bfd
);
5681 relend
= relocs
+ input_section
->reloc_count
;
5682 for (; rel
< relend
; rel
++)
5684 enum elf_ppc_reloc_type r_type
;
5686 bfd_reloc_status_type r
;
5687 Elf_Internal_Sym
*sym
;
5689 struct elf_link_hash_entry
*h
;
5690 const char *sym_name
;
5691 reloc_howto_type
*howto
;
5692 unsigned long r_symndx
;
5694 bfd_vma branch_bit
, insn
, from
;
5695 bfd_boolean unresolved_reloc
;
5697 unsigned int tls_type
, tls_mask
, tls_gd
;
5699 r_type
= ELF32_R_TYPE (rel
->r_info
);
5703 unresolved_reloc
= FALSE
;
5705 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5707 if (r_symndx
< symtab_hdr
->sh_info
)
5709 sym
= local_syms
+ r_symndx
;
5710 sec
= local_sections
[r_symndx
];
5711 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
5713 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
5717 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
5718 r_symndx
, symtab_hdr
, sym_hashes
,
5720 unresolved_reloc
, warned
);
5722 sym_name
= h
->root
.root
.string
;
5725 if (sec
!= NULL
&& elf_discarded_section (sec
))
5727 /* For relocs against symbols from removed linkonce sections,
5728 or sections discarded by a linker script, we just want the
5729 section contents zeroed. Avoid any special processing. */
5731 if (r_type
< R_PPC_max
)
5732 howto
= ppc_elf_howto_table
[r_type
];
5733 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
5739 if (info
->relocatable
)
5742 && r_type
== R_PPC_PLTREL24
5743 && rel
->r_addend
>= 32768)
5745 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5746 addend specifies the GOT pointer offset within .got2. */
5747 rel
->r_addend
+= got2
->output_offset
;
5752 /* TLS optimizations. Replace instruction sequences and relocs
5753 based on information we collected in tls_optimize. We edit
5754 RELOCS so that --emit-relocs will output something sensible
5755 for the final instruction stream. */
5758 if (IS_PPC_TLS_RELOC (r_type
))
5761 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
5762 else if (local_got_offsets
!= NULL
)
5765 lgot_masks
= (char *) (local_got_offsets
+ symtab_hdr
->sh_info
);
5766 tls_mask
= lgot_masks
[r_symndx
];
5770 /* Ensure reloc mapping code below stays sane. */
5771 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
5772 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
5773 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
5774 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
5775 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
5776 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
5777 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
5778 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
5785 case R_PPC_GOT_TPREL16
:
5786 case R_PPC_GOT_TPREL16_LO
:
5788 && (tls_mask
& TLS_TPREL
) == 0)
5791 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
5793 insn
|= 0x3c020000; /* addis 0,2,0 */
5794 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
5795 r_type
= R_PPC_TPREL16_HA
;
5796 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5802 && (tls_mask
& TLS_TPREL
) == 0)
5805 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
5806 if ((insn
& ((31 << 26) | (31 << 11)))
5807 == ((31 << 26) | (2 << 11)))
5808 rtra
= insn
& ((1 << 26) - (1 << 16));
5809 else if ((insn
& ((31 << 26) | (31 << 16)))
5810 == ((31 << 26) | (2 << 16)))
5811 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
5814 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
5817 else if ((insn
& (31 << 1)) == 23 << 1
5818 && ((insn
& (31 << 6)) < 14 << 6
5819 || ((insn
& (31 << 6)) >= 16 << 6
5820 && (insn
& (31 << 6)) < 24 << 6)))
5821 /* load and store indexed -> dform. */
5822 insn
= (32 | ((insn
>> 6) & 31)) << 26;
5823 else if ((insn
& (31 << 1)) == 21 << 1
5824 && (insn
& (0x1a << 6)) == 0)
5825 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5826 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
5827 | ((insn
>> 6) & 1));
5828 else if ((insn
& (31 << 1)) == 21 << 1
5829 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
5831 insn
= (58 << 26) | 2;
5835 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
5836 r_type
= R_PPC_TPREL16_LO
;
5837 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5839 /* Was PPC_TLS which sits on insn boundary, now
5840 PPC_TPREL16_LO which is at low-order half-word. */
5841 rel
->r_offset
+= d_offset
;
5845 case R_PPC_GOT_TLSGD16_HI
:
5846 case R_PPC_GOT_TLSGD16_HA
:
5847 tls_gd
= TLS_TPRELGD
;
5848 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
5852 case R_PPC_GOT_TLSLD16_HI
:
5853 case R_PPC_GOT_TLSLD16_HA
:
5854 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
5857 if ((tls_mask
& tls_gd
) != 0)
5858 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
5859 + R_PPC_GOT_TPREL16
);
5862 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
5863 rel
->r_offset
-= d_offset
;
5864 r_type
= R_PPC_NONE
;
5866 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5870 case R_PPC_GOT_TLSGD16
:
5871 case R_PPC_GOT_TLSGD16_LO
:
5872 tls_gd
= TLS_TPRELGD
;
5873 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
5874 goto tls_get_addr_check
;
5877 case R_PPC_GOT_TLSLD16
:
5878 case R_PPC_GOT_TLSLD16_LO
:
5879 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
5882 if (rel
+ 1 < relend
)
5884 enum elf_ppc_reloc_type r_type2
;
5885 unsigned long r_symndx2
;
5886 struct elf_link_hash_entry
*h2
;
5887 bfd_vma insn1
, insn2
;
5890 /* The next instruction should be a call to
5891 __tls_get_addr. Peek at the reloc to be sure. */
5892 r_type2
= ELF32_R_TYPE (rel
[1].r_info
);
5893 r_symndx2
= ELF32_R_SYM (rel
[1].r_info
);
5894 if (r_symndx2
< symtab_hdr
->sh_info
5895 || (r_type2
!= R_PPC_REL14
5896 && r_type2
!= R_PPC_REL14_BRTAKEN
5897 && r_type2
!= R_PPC_REL14_BRNTAKEN
5898 && r_type2
!= R_PPC_REL24
5899 && r_type2
!= R_PPC_PLTREL24
))
5902 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
5903 while (h2
->root
.type
== bfd_link_hash_indirect
5904 || h2
->root
.type
== bfd_link_hash_warning
)
5905 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
5906 if (h2
== NULL
|| h2
!= htab
->tls_get_addr
)
5909 /* OK, it checks out. Replace the call. */
5910 offset
= rel
[1].r_offset
;
5911 insn1
= bfd_get_32 (output_bfd
,
5912 contents
+ rel
->r_offset
- d_offset
);
5913 if ((tls_mask
& tls_gd
) != 0)
5916 insn1
&= (1 << 26) - 1;
5917 insn1
|= 32 << 26; /* lwz */
5918 insn2
= 0x7c631214; /* add 3,3,2 */
5919 rel
[1].r_info
= ELF32_R_INFO (r_symndx2
, R_PPC_NONE
);
5920 rel
[1].r_addend
= 0;
5921 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
5922 + R_PPC_GOT_TPREL16
);
5923 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5928 insn1
= 0x3c620000; /* addis 3,2,0 */
5929 insn2
= 0x38630000; /* addi 3,3,0 */
5932 /* Was an LD reloc. */
5934 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
5936 r_type
= R_PPC_TPREL16_HA
;
5937 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
5938 rel
[1].r_info
= ELF32_R_INFO (r_symndx
,
5940 rel
[1].r_offset
+= d_offset
;
5941 rel
[1].r_addend
= rel
->r_addend
;
5943 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- d_offset
);
5944 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
5947 /* We changed the symbol on an LD reloc. Start over
5948 in order to get h, sym, sec etc. right. */
5957 /* Handle other relocations that tweak non-addend part of insn. */
5964 /* Branch taken prediction relocations. */
5965 case R_PPC_ADDR14_BRTAKEN
:
5966 case R_PPC_REL14_BRTAKEN
:
5967 branch_bit
= BRANCH_PREDICT_BIT
;
5970 /* Branch not taken prediction relocations. */
5971 case R_PPC_ADDR14_BRNTAKEN
:
5972 case R_PPC_REL14_BRNTAKEN
:
5973 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
5974 insn
&= ~BRANCH_PREDICT_BIT
;
5977 from
= (rel
->r_offset
5978 + input_section
->output_offset
5979 + input_section
->output_section
->vma
);
5981 /* Invert 'y' bit if not the default. */
5982 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
5983 insn
^= BRANCH_PREDICT_BIT
;
5985 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
5989 addend
= rel
->r_addend
;
5992 if (r_type
< R_PPC_max
)
5993 howto
= ppc_elf_howto_table
[r_type
];
5997 (*_bfd_error_handler
)
5998 (_("%B: unknown relocation type %d for symbol %s"),
5999 input_bfd
, (int) r_type
, sym_name
);
6001 bfd_set_error (bfd_error_bad_value
);
6007 case R_PPC_EMB_MRKREF
:
6008 case R_PPC_GNU_VTINHERIT
:
6009 case R_PPC_GNU_VTENTRY
:
6012 /* GOT16 relocations. Like an ADDR16 using the symbol's
6013 address in the GOT as relocation value instead of the
6014 symbol's value itself. Also, create a GOT entry for the
6015 symbol and put the symbol value there. */
6016 case R_PPC_GOT_TLSGD16
:
6017 case R_PPC_GOT_TLSGD16_LO
:
6018 case R_PPC_GOT_TLSGD16_HI
:
6019 case R_PPC_GOT_TLSGD16_HA
:
6020 tls_type
= TLS_TLS
| TLS_GD
;
6023 case R_PPC_GOT_TLSLD16
:
6024 case R_PPC_GOT_TLSLD16_LO
:
6025 case R_PPC_GOT_TLSLD16_HI
:
6026 case R_PPC_GOT_TLSLD16_HA
:
6027 tls_type
= TLS_TLS
| TLS_LD
;
6030 case R_PPC_GOT_TPREL16
:
6031 case R_PPC_GOT_TPREL16_LO
:
6032 case R_PPC_GOT_TPREL16_HI
:
6033 case R_PPC_GOT_TPREL16_HA
:
6034 tls_type
= TLS_TLS
| TLS_TPREL
;
6037 case R_PPC_GOT_DTPREL16
:
6038 case R_PPC_GOT_DTPREL16_LO
:
6039 case R_PPC_GOT_DTPREL16_HI
:
6040 case R_PPC_GOT_DTPREL16_HA
:
6041 tls_type
= TLS_TLS
| TLS_DTPREL
;
6045 case R_PPC_GOT16_LO
:
6046 case R_PPC_GOT16_HI
:
6047 case R_PPC_GOT16_HA
:
6050 /* Relocation is to the entry for this symbol in the global
6056 if (htab
->got
== NULL
)
6060 if (tls_type
== (TLS_TLS
| TLS_LD
)
6062 || !h
->def_dynamic
))
6063 offp
= &htab
->tlsld_got
.offset
;
6067 dyn
= htab
->elf
.dynamic_sections_created
;
6068 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
6070 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
6071 /* This is actually a static link, or it is a
6072 -Bsymbolic link and the symbol is defined
6073 locally, or the symbol was forced to be local
6074 because of a version file. */
6079 unresolved_reloc
= FALSE
;
6081 offp
= &h
->got
.offset
;
6085 if (local_got_offsets
== NULL
)
6087 offp
= &local_got_offsets
[r_symndx
];
6090 /* The offset must always be a multiple of 4. We use the
6091 least significant bit to record whether we have already
6092 processed this entry. */
6098 unsigned int tls_m
= (tls_mask
6099 & (TLS_LD
| TLS_GD
| TLS_DTPREL
6100 | TLS_TPREL
| TLS_TPRELGD
));
6102 if (offp
== &htab
->tlsld_got
.offset
)
6108 /* We might have multiple got entries for this sym.
6109 Initialize them all. */
6114 if ((tls_m
& TLS_LD
) != 0)
6116 tls_ty
= TLS_TLS
| TLS_LD
;
6119 else if ((tls_m
& TLS_GD
) != 0)
6121 tls_ty
= TLS_TLS
| TLS_GD
;
6124 else if ((tls_m
& TLS_DTPREL
) != 0)
6126 tls_ty
= TLS_TLS
| TLS_DTPREL
;
6127 tls_m
&= ~TLS_DTPREL
;
6129 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6131 tls_ty
= TLS_TLS
| TLS_TPREL
;
6135 /* Generate relocs for the dynamic linker. */
6136 if ((info
->shared
|| indx
!= 0)
6138 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6139 || h
->root
.type
!= bfd_link_hash_undefweak
))
6141 outrel
.r_offset
= (htab
->got
->output_section
->vma
6142 + htab
->got
->output_offset
6144 outrel
.r_addend
= 0;
6145 if (tls_ty
& (TLS_LD
| TLS_GD
))
6147 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
6148 if (tls_ty
== (TLS_TLS
| TLS_GD
))
6150 loc
= htab
->relgot
->contents
;
6151 loc
+= (htab
->relgot
->reloc_count
++
6152 * sizeof (Elf32_External_Rela
));
6153 bfd_elf32_swap_reloca_out (output_bfd
,
6155 outrel
.r_offset
+= 4;
6157 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
6160 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
6161 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
6162 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
6163 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
6165 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_RELATIVE
);
6167 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
6170 outrel
.r_addend
+= relocation
;
6171 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
6172 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
6174 loc
= htab
->relgot
->contents
;
6175 loc
+= (htab
->relgot
->reloc_count
++
6176 * sizeof (Elf32_External_Rela
));
6177 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
6180 /* Init the .got section contents if we're not
6181 emitting a reloc. */
6184 bfd_vma value
= relocation
;
6186 if (tls_ty
== (TLS_TLS
| TLS_LD
))
6188 else if (tls_ty
!= 0)
6190 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6191 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
6192 value
+= DTP_OFFSET
- TP_OFFSET
;
6194 if (tls_ty
== (TLS_TLS
| TLS_GD
))
6196 bfd_put_32 (output_bfd
, value
,
6197 htab
->got
->contents
+ off
+ 4);
6201 bfd_put_32 (output_bfd
, value
,
6202 htab
->got
->contents
+ off
);
6206 if (tls_ty
& (TLS_LD
| TLS_GD
))
6215 if (off
>= (bfd_vma
) -2)
6218 if ((tls_type
& TLS_TLS
) != 0)
6220 if (tls_type
!= (TLS_TLS
| TLS_LD
))
6222 if ((tls_mask
& TLS_LD
) != 0
6224 || !h
->def_dynamic
))
6226 if (tls_type
!= (TLS_TLS
| TLS_GD
))
6228 if ((tls_mask
& TLS_GD
) != 0)
6230 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
6232 if ((tls_mask
& TLS_DTPREL
) != 0)
6239 relocation
= htab
->got
->output_offset
+ off
;
6240 relocation
-= htab
->elf
.hgot
->root
.u
.def
.value
;
6242 /* Addends on got relocations don't make much sense.
6243 x+off@got is actually x@got+off, and since the got is
6244 generated by a hash table traversal, the value in the
6245 got at entry m+n bears little relation to the entry m. */
6247 (*_bfd_error_handler
)
6248 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6251 (long) rel
->r_offset
,
6257 /* Relocations that need no special processing. */
6258 case R_PPC_LOCAL24PC
:
6259 /* It makes no sense to point a local relocation
6260 at a symbol not in this object. */
6261 if (unresolved_reloc
)
6263 if (! (*info
->callbacks
->undefined_symbol
) (info
,
6264 h
->root
.root
.string
,
6274 case R_PPC_DTPREL16
:
6275 case R_PPC_DTPREL16_LO
:
6276 case R_PPC_DTPREL16_HI
:
6277 case R_PPC_DTPREL16_HA
:
6278 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6281 /* Relocations that may need to be propagated if this is a shared
6284 case R_PPC_TPREL16_LO
:
6285 case R_PPC_TPREL16_HI
:
6286 case R_PPC_TPREL16_HA
:
6287 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
6288 /* The TPREL16 relocs shouldn't really be used in shared
6289 libs as they will result in DT_TEXTREL being set, but
6290 support them anyway. */
6294 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
6297 case R_PPC_DTPREL32
:
6298 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
6301 case R_PPC_DTPMOD32
:
6307 case R_PPC_REL16_LO
:
6308 case R_PPC_REL16_HI
:
6309 case R_PPC_REL16_HA
:
6315 case R_PPC_REL14_BRTAKEN
:
6316 case R_PPC_REL14_BRNTAKEN
:
6317 /* If these relocations are not to a named symbol, they can be
6318 handled right here, no need to bother the dynamic linker. */
6319 if (SYMBOL_REFERENCES_LOCAL (info
, h
)
6320 || h
== htab
->elf
.hgot
)
6324 /* Relocations that always need to be propagated if this is a shared
6329 case R_PPC_ADDR16_LO
:
6330 case R_PPC_ADDR16_HI
:
6331 case R_PPC_ADDR16_HA
:
6333 case R_PPC_ADDR14_BRTAKEN
:
6334 case R_PPC_ADDR14_BRNTAKEN
:
6338 if ((input_section
->flags
& SEC_ALLOC
) == 0)
6344 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6345 || h
->root
.type
!= bfd_link_hash_undefweak
)
6346 && (MUST_BE_DYN_RELOC (r_type
)
6347 || !SYMBOL_CALLS_LOCAL (info
, h
)))
6348 || (ELIMINATE_COPY_RELOCS
6354 && !h
->def_regular
))
6359 fprintf (stderr
, "ppc_elf_relocate_section needs to "
6360 "create relocation for %s\n",
6361 (h
&& h
->root
.root
.string
6362 ? h
->root
.root
.string
: "<unknown>"));
6365 /* When generating a shared object, these relocations
6366 are copied into the output file to be resolved at run
6372 name
= (bfd_elf_string_from_elf_section
6374 elf_elfheader (input_bfd
)->e_shstrndx
,
6375 elf_section_data (input_section
)->rel_hdr
.sh_name
));
6379 BFD_ASSERT (CONST_STRNEQ (name
, ".rela")
6380 && strcmp (bfd_get_section_name (input_bfd
,
6384 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
6385 BFD_ASSERT (sreloc
!= NULL
);
6391 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
6393 if (outrel
.r_offset
== (bfd_vma
) -1
6394 || outrel
.r_offset
== (bfd_vma
) -2)
6395 skip
= (int) outrel
.r_offset
;
6396 outrel
.r_offset
+= (input_section
->output_section
->vma
6397 + input_section
->output_offset
);
6400 memset (&outrel
, 0, sizeof outrel
);
6401 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
6403 unresolved_reloc
= FALSE
;
6404 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
6405 outrel
.r_addend
= rel
->r_addend
;
6409 outrel
.r_addend
= relocation
+ rel
->r_addend
;
6411 if (r_type
== R_PPC_ADDR32
)
6412 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
6417 if (bfd_is_abs_section (sec
))
6419 else if (sec
== NULL
|| sec
->owner
== NULL
)
6421 bfd_set_error (bfd_error_bad_value
);
6428 /* We are turning this relocation into one
6429 against a section symbol. It would be
6430 proper to subtract the symbol's value,
6431 osec->vma, from the emitted reloc addend,
6432 but ld.so expects buggy relocs. */
6433 osec
= sec
->output_section
;
6434 indx
= elf_section_data (osec
)->dynindx
;
6437 osec
= htab
->elf
.text_index_section
;
6438 indx
= elf_section_data (osec
)->dynindx
;
6440 BFD_ASSERT (indx
!= 0);
6443 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6444 indx
, osec
->name
, osec
->flags
,
6445 h
->root
.root
.string
);
6449 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
6453 loc
= sreloc
->contents
;
6454 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
6455 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
6460 /* This reloc will be computed at runtime. We clear the memory
6461 so that it contains predictable value. */
6463 && ((input_section
->flags
& SEC_ALLOC
) != 0
6464 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
6466 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
6473 case R_PPC_RELAX32PC_PLT
:
6474 case R_PPC_RELAX32_PLT
:
6476 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
6478 if (htab
->plt_type
== PLT_NEW
)
6479 relocation
= (htab
->glink
->output_section
->vma
6480 + htab
->glink
->output_offset
6481 + ent
->glink_offset
);
6483 relocation
= (htab
->plt
->output_section
->vma
6484 + htab
->plt
->output_offset
6488 if (r_type
== R_PPC_RELAX32_PLT
)
6492 case R_PPC_RELAX32PC
:
6493 relocation
-= (input_section
->output_section
->vma
6494 + input_section
->output_offset
6495 + rel
->r_offset
- 4);
6504 t0
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6505 t1
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
+ 4);
6507 /* We're clearing the bits for R_PPC_ADDR16_HA
6508 and R_PPC_ADDR16_LO here. */
6512 /* t0 is HA, t1 is LO */
6513 relocation
+= addend
;
6514 t0
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
6515 t1
|= relocation
& 0xffff;
6517 bfd_put_32 (output_bfd
, t0
, contents
+ rel
->r_offset
);
6518 bfd_put_32 (output_bfd
, t1
, contents
+ rel
->r_offset
+ 4);
6522 /* Indirect .sdata relocation. */
6523 case R_PPC_EMB_SDAI16
:
6524 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
6526 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
6527 h
, relocation
, rel
);
6530 /* Indirect .sdata2 relocation. */
6531 case R_PPC_EMB_SDA2I16
:
6532 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
6534 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
6535 h
, relocation
, rel
);
6538 /* Handle the TOC16 reloc. We want to use the offset within the .got
6539 section, not the actual VMA. This is appropriate when generating
6540 an embedded ELF object, for which the .got section acts like the
6541 AIX .toc section. */
6542 case R_PPC_TOC16
: /* phony GOT16 relocations */
6543 BFD_ASSERT (sec
!= NULL
);
6544 BFD_ASSERT (bfd_is_und_section (sec
)
6545 || strcmp (bfd_get_section_name (abfd
, sec
), ".got") == 0
6546 || strcmp (bfd_get_section_name (abfd
, sec
), ".cgot") == 0);
6548 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
6551 case R_PPC_PLTREL24
:
6552 /* Relocation is to the entry for this symbol in the
6553 procedure linkage table. */
6555 struct plt_entry
*ent
= find_plt_ent (h
, got2
, addend
);
6559 || htab
->plt
== NULL
)
6561 /* We didn't make a PLT entry for this symbol. This
6562 happens when statically linking PIC code, or when
6563 using -Bsymbolic. */
6567 unresolved_reloc
= FALSE
;
6568 if (htab
->plt_type
== PLT_NEW
)
6569 relocation
= (htab
->glink
->output_section
->vma
6570 + htab
->glink
->output_offset
6571 + ent
->glink_offset
);
6573 relocation
= (htab
->plt
->output_section
->vma
6574 + htab
->plt
->output_offset
6579 /* Relocate against _SDA_BASE_. */
6580 case R_PPC_SDAREL16
:
6583 struct elf_link_hash_entry
*sh
;
6585 BFD_ASSERT (sec
!= NULL
);
6586 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6587 if (! ((CONST_STRNEQ (name
, ".sdata")
6588 && (name
[6] == 0 || name
[6] == '.'))
6589 || (CONST_STRNEQ (name
, ".sbss")
6590 && (name
[5] == 0 || name
[5] == '.'))))
6592 (*_bfd_error_handler
)
6593 (_("%B: the target (%s) of a %s relocation is "
6594 "in the wrong output section (%s)"),
6600 sh
= htab
->sdata
[0].sym
;
6601 addend
-= (sh
->root
.u
.def
.value
6602 + sh
->root
.u
.def
.section
->output_offset
6603 + sh
->root
.u
.def
.section
->output_section
->vma
);
6607 /* Relocate against _SDA2_BASE_. */
6608 case R_PPC_EMB_SDA2REL
:
6611 struct elf_link_hash_entry
*sh
;
6613 BFD_ASSERT (sec
!= NULL
);
6614 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6615 if (! (CONST_STRNEQ (name
, ".sdata2")
6616 || CONST_STRNEQ (name
, ".sbss2")))
6618 (*_bfd_error_handler
)
6619 (_("%B: the target (%s) of a %s relocation is "
6620 "in the wrong output section (%s)"),
6626 bfd_set_error (bfd_error_bad_value
);
6630 sh
= htab
->sdata
[1].sym
;
6631 addend
-= (sh
->root
.u
.def
.value
6632 + sh
->root
.u
.def
.section
->output_offset
6633 + sh
->root
.u
.def
.section
->output_section
->vma
);
6637 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6638 case R_PPC_EMB_SDA21
:
6639 case R_PPC_EMB_RELSDA
:
6643 struct elf_link_hash_entry
*sh
;
6645 BFD_ASSERT (sec
!= NULL
);
6646 name
= bfd_get_section_name (abfd
, sec
->output_section
);
6647 if (((CONST_STRNEQ (name
, ".sdata")
6648 && (name
[6] == 0 || name
[6] == '.'))
6649 || (CONST_STRNEQ (name
, ".sbss")
6650 && (name
[5] == 0 || name
[5] == '.'))))
6653 sh
= htab
->sdata
[0].sym
;
6654 addend
-= (sh
->root
.u
.def
.value
6655 + sh
->root
.u
.def
.section
->output_offset
6656 + sh
->root
.u
.def
.section
->output_section
->vma
);
6659 else if (CONST_STRNEQ (name
, ".sdata2")
6660 || CONST_STRNEQ (name
, ".sbss2"))
6663 sh
= htab
->sdata
[1].sym
;
6664 addend
-= (sh
->root
.u
.def
.value
6665 + sh
->root
.u
.def
.section
->output_offset
6666 + sh
->root
.u
.def
.section
->output_section
->vma
);
6669 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
6670 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
6677 (*_bfd_error_handler
)
6678 (_("%B: the target (%s) of a %s relocation is "
6679 "in the wrong output section (%s)"),
6685 bfd_set_error (bfd_error_bad_value
);
6690 if (r_type
== R_PPC_EMB_SDA21
)
6691 { /* fill in register field */
6692 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
6693 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
6694 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
6699 /* Relocate against the beginning of the section. */
6701 case R_PPC_SECTOFF_LO
:
6702 case R_PPC_SECTOFF_HI
:
6703 case R_PPC_SECTOFF_HA
:
6704 BFD_ASSERT (sec
!= NULL
);
6705 addend
-= sec
->output_section
->vma
;
6708 /* Negative relocations. */
6709 case R_PPC_EMB_NADDR32
:
6710 case R_PPC_EMB_NADDR16
:
6711 case R_PPC_EMB_NADDR16_LO
:
6712 case R_PPC_EMB_NADDR16_HI
:
6713 case R_PPC_EMB_NADDR16_HA
:
6714 addend
-= 2 * relocation
;
6718 case R_PPC_GLOB_DAT
:
6719 case R_PPC_JMP_SLOT
:
6720 case R_PPC_RELATIVE
:
6722 case R_PPC_PLTREL32
:
6723 case R_PPC_PLT16_LO
:
6724 case R_PPC_PLT16_HI
:
6725 case R_PPC_PLT16_HA
:
6727 case R_PPC_EMB_RELSEC16
:
6728 case R_PPC_EMB_RELST_LO
:
6729 case R_PPC_EMB_RELST_HI
:
6730 case R_PPC_EMB_RELST_HA
:
6731 case R_PPC_EMB_BIT_FLD
:
6732 (*_bfd_error_handler
)
6733 (_("%B: relocation %s is not yet supported for symbol %s."),
6738 bfd_set_error (bfd_error_invalid_operation
);
6743 /* Do any further special processing. */
6749 case R_PPC_ADDR16_HA
:
6750 case R_PPC_REL16_HA
:
6751 case R_PPC_SECTOFF_HA
:
6752 case R_PPC_TPREL16_HA
:
6753 case R_PPC_DTPREL16_HA
:
6754 case R_PPC_EMB_NADDR16_HA
:
6755 case R_PPC_EMB_RELST_HA
:
6756 /* It's just possible that this symbol is a weak symbol
6757 that's not actually defined anywhere. In that case,
6758 'sec' would be NULL, and we should leave the symbol
6759 alone (it will be set to zero elsewhere in the link). */
6764 case R_PPC_PLT16_HA
:
6765 case R_PPC_GOT16_HA
:
6766 case R_PPC_GOT_TLSGD16_HA
:
6767 case R_PPC_GOT_TLSLD16_HA
:
6768 case R_PPC_GOT_TPREL16_HA
:
6769 case R_PPC_GOT_DTPREL16_HA
:
6770 /* Add 0x10000 if sign bit in 0:15 is set.
6771 Bits 0:15 are not used. */
6777 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6778 "offset = %ld, addend = %ld\n",
6783 (long) rel
->r_offset
,
6787 if (unresolved_reloc
6788 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
6791 (*_bfd_error_handler
)
6792 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6795 (long) rel
->r_offset
,
6801 r
= _bfd_final_link_relocate (howto
,
6809 if (r
!= bfd_reloc_ok
)
6811 if (r
== bfd_reloc_overflow
)
6816 && h
->root
.type
== bfd_link_hash_undefweak
6817 && howto
->pc_relative
)
6819 /* Assume this is a call protected by other code that
6820 detect the symbol is undefined. If this is the case,
6821 we can safely ignore the overflow. If not, the
6822 program is hosed anyway, and a little warning isn't
6828 if (! (*info
->callbacks
->reloc_overflow
) (info
,
6829 (h
? &h
->root
: NULL
),
6840 (*_bfd_error_handler
)
6841 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6842 input_bfd
, input_section
,
6843 (long) rel
->r_offset
, howto
->name
, sym_name
, (int) r
);
6850 fprintf (stderr
, "\n");
6856 #define PPC_LO(v) ((v) & 0xffff)
6857 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6858 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6860 /* Finish up dynamic symbol handling. We set the contents of various
6861 dynamic sections here. */
6864 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
6865 struct bfd_link_info
*info
,
6866 struct elf_link_hash_entry
*h
,
6867 Elf_Internal_Sym
*sym
)
6869 struct ppc_elf_link_hash_table
*htab
;
6870 struct plt_entry
*ent
;
6871 bfd_boolean doneone
;
6874 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
6875 h
->root
.root
.string
);
6878 htab
= ppc_elf_hash_table (info
);
6879 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6882 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6883 if (ent
->plt
.offset
!= (bfd_vma
) -1)
6887 Elf_Internal_Rela rela
;
6889 bfd_vma reloc_index
;
6891 if (htab
->plt_type
== PLT_NEW
)
6892 reloc_index
= ent
->plt
.offset
/ 4;
6895 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
6896 / htab
->plt_slot_size
);
6897 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
6898 && htab
->plt_type
== PLT_OLD
)
6899 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
6902 /* This symbol has an entry in the procedure linkage table.
6904 if (htab
->plt_type
== PLT_VXWORKS
)
6907 const bfd_vma
*plt_entry
;
6909 /* The first three entries in .got.plt are reserved. */
6910 got_offset
= (reloc_index
+ 3) * 4;
6912 /* Use the right PLT. */
6913 plt_entry
= info
->shared
? ppc_elf_vxworks_pic_plt_entry
6914 : ppc_elf_vxworks_plt_entry
;
6916 /* Fill in the .plt on VxWorks. */
6919 bfd_vma got_offset_hi
= (got_offset
>> 16)
6920 + ((got_offset
& 0x8000) >> 15);
6922 bfd_put_32 (output_bfd
,
6923 plt_entry
[0] | (got_offset_hi
& 0xffff),
6924 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
6925 bfd_put_32 (output_bfd
,
6926 plt_entry
[1] | (got_offset
& 0xffff),
6927 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
6933 + htab
->elf
.hgot
->root
.u
.def
.value
6934 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
6935 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
);
6936 bfd_vma got_loc_hi
= (got_loc
>> 16)
6937 + ((got_loc
& 0x8000) >> 15);
6939 bfd_put_32 (output_bfd
,
6940 plt_entry
[0] | (got_loc_hi
& 0xffff),
6941 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
6942 bfd_put_32 (output_bfd
,
6943 plt_entry
[1] | (got_loc
& 0xffff),
6944 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
6947 bfd_put_32 (output_bfd
, plt_entry
[2],
6948 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
6949 bfd_put_32 (output_bfd
, plt_entry
[3],
6950 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
6952 /* This instruction is an immediate load. The value loaded is
6953 the byte offset of the R_PPC_JMP_SLOT relocation from the
6954 start of the .rela.plt section. The value is stored in the
6955 low-order 16 bits of the load instruction. */
6956 /* NOTE: It appears that this is now an index rather than a
6957 prescaled offset. */
6958 bfd_put_32 (output_bfd
,
6959 plt_entry
[4] | reloc_index
,
6960 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
6961 /* This instruction is a PC-relative branch whose target is
6962 the start of the PLT section. The address of this branch
6963 instruction is 20 bytes beyond the start of this PLT entry.
6964 The address is encoded in bits 6-29, inclusive. The value
6965 stored is right-shifted by two bits, permitting a 26-bit
6967 bfd_put_32 (output_bfd
,
6969 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
6970 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
6971 bfd_put_32 (output_bfd
, plt_entry
[6],
6972 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
6973 bfd_put_32 (output_bfd
, plt_entry
[7],
6974 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
6976 /* Fill in the GOT entry corresponding to this PLT slot with
6977 the address immediately after the the "bctr" instruction
6978 in this PLT entry. */
6979 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
6980 + htab
->plt
->output_offset
6981 + ent
->plt
.offset
+ 16),
6982 htab
->sgotplt
->contents
+ got_offset
);
6986 /* Fill in a couple of entries in .rela.plt.unloaded. */
6987 loc
= htab
->srelplt2
->contents
6988 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
6989 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
6990 * sizeof (Elf32_External_Rela
));
6992 /* Provide the @ha relocation for the first instruction. */
6993 rela
.r_offset
= (htab
->plt
->output_section
->vma
6994 + htab
->plt
->output_offset
6995 + ent
->plt
.offset
+ 2);
6996 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
6998 rela
.r_addend
= got_offset
;
6999 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7000 loc
+= sizeof (Elf32_External_Rela
);
7002 /* Provide the @l relocation for the second instruction. */
7003 rela
.r_offset
= (htab
->plt
->output_section
->vma
7004 + htab
->plt
->output_offset
7005 + ent
->plt
.offset
+ 6);
7006 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
7008 rela
.r_addend
= got_offset
;
7009 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7010 loc
+= sizeof (Elf32_External_Rela
);
7012 /* Provide a relocation for the GOT entry corresponding to this
7013 PLT slot. Point it at the middle of the .plt entry. */
7014 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
7015 + htab
->sgotplt
->output_offset
7017 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
7019 rela
.r_addend
= ent
->plt
.offset
+ 16;
7020 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7023 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7024 In particular, the offset for the relocation is not the
7025 address of the PLT entry for this function, as specified
7026 by the ABI. Instead, the offset is set to the address of
7027 the GOT slot for this function. See EABI 4.4.4.1. */
7028 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
7029 + htab
->sgotplt
->output_offset
7035 rela
.r_offset
= (htab
->plt
->output_section
->vma
7036 + htab
->plt
->output_offset
7038 if (htab
->plt_type
== PLT_OLD
)
7040 /* We don't need to fill in the .plt. The ppc dynamic
7041 linker will fill it in. */
7045 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
7046 + htab
->glink
->output_section
->vma
7047 + htab
->glink
->output_offset
);
7048 bfd_put_32 (output_bfd
, val
,
7049 htab
->plt
->contents
+ ent
->plt
.offset
);
7053 /* Fill in the entry in the .rela.plt section. */
7054 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
7057 loc
= (htab
->relplt
->contents
7058 + reloc_index
* sizeof (Elf32_External_Rela
));
7059 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7061 if (!h
->def_regular
)
7063 /* Mark the symbol as undefined, rather than as defined in
7064 the .plt section. Leave the value alone. */
7065 sym
->st_shndx
= SHN_UNDEF
;
7066 /* If the symbol is weak, we do need to clear the value.
7067 Otherwise, the PLT entry would provide a definition for
7068 the symbol even if the symbol wasn't defined anywhere,
7069 and so the symbol would never be NULL. */
7070 if (!h
->ref_regular_nonweak
)
7076 if (htab
->plt_type
== PLT_NEW
)
7081 plt
= (ent
->plt
.offset
7082 + htab
->plt
->output_section
->vma
7083 + htab
->plt
->output_offset
);
7084 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
7086 if (info
->shared
|| info
->pie
)
7090 if (ent
->addend
>= 32768)
7092 + ent
->sec
->output_section
->vma
7093 + ent
->sec
->output_offset
);
7094 else if (htab
->elf
.hgot
!= NULL
)
7095 got
= (htab
->elf
.hgot
->root
.u
.def
.value
7096 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7097 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
);
7101 if (plt
+ 0x8000 < 0x10000)
7103 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7105 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7107 bfd_put_32 (output_bfd
, BCTR
, p
);
7109 bfd_put_32 (output_bfd
, NOP
, p
);
7114 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7116 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7118 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7120 bfd_put_32 (output_bfd
, BCTR
, p
);
7126 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7128 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7130 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7132 bfd_put_32 (output_bfd
, BCTR
, p
);
7135 /* We only need one non-PIC glink stub. */
7146 Elf_Internal_Rela rela
;
7149 /* This symbols needs a copy reloc. Set it up. */
7152 fprintf (stderr
, ", copy");
7155 BFD_ASSERT (h
->dynindx
!= -1);
7157 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
7161 BFD_ASSERT (s
!= NULL
);
7163 rela
.r_offset
= (h
->root
.u
.def
.value
7164 + h
->root
.u
.def
.section
->output_section
->vma
7165 + h
->root
.u
.def
.section
->output_offset
);
7166 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
7168 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
7169 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7173 fprintf (stderr
, "\n");
7176 /* Mark some specially defined symbols as absolute. */
7177 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
7178 || (!htab
->is_vxworks
7179 && (h
== htab
->elf
.hgot
7180 || strcmp (h
->root
.root
.string
,
7181 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7182 sym
->st_shndx
= SHN_ABS
;
7187 static enum elf_reloc_type_class
7188 ppc_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
7190 switch (ELF32_R_TYPE (rela
->r_info
))
7192 case R_PPC_RELATIVE
:
7193 return reloc_class_relative
;
7196 case R_PPC_JMP_SLOT
:
7197 return reloc_class_plt
;
7199 return reloc_class_copy
;
7201 return reloc_class_normal
;
7205 /* Finish up the dynamic sections. */
7208 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
7209 struct bfd_link_info
*info
)
7213 struct ppc_elf_link_hash_table
*htab
;
7218 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
7221 htab
= ppc_elf_hash_table (info
);
7222 dynobj
= elf_hash_table (info
)->dynobj
;
7223 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
7224 if (htab
->is_vxworks
)
7225 splt
= bfd_get_section_by_name (dynobj
, ".plt");
7230 if (htab
->elf
.hgot
!= NULL
)
7231 got
= (htab
->elf
.hgot
->root
.u
.def
.value
7232 + htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7233 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
);
7235 if (htab
->elf
.dynamic_sections_created
)
7237 Elf32_External_Dyn
*dyncon
, *dynconend
;
7239 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
7241 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
7242 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
7243 for (; dyncon
< dynconend
; dyncon
++)
7245 Elf_Internal_Dyn dyn
;
7248 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
7253 if (htab
->is_vxworks
)
7257 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
7261 dyn
.d_un
.d_val
= htab
->relplt
->size
;
7266 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
7270 dyn
.d_un
.d_ptr
= got
;
7274 if (htab
->is_vxworks
)
7277 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
7286 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
7290 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
7291 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
7292 if (htab
->got
!= NULL
)
7294 unsigned char *p
= htab
->got
->contents
;
7297 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
7298 if (htab
->plt_type
== PLT_OLD
)
7299 bfd_put_32 (output_bfd
, 0x4e800021 /* blrl */, p
- 4);
7303 val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
7304 bfd_put_32 (output_bfd
, val
, p
);
7306 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
7309 /* Fill in the first entry in the VxWorks procedure linkage table. */
7310 if (splt
&& splt
->size
> 0)
7312 /* Use the right PLT. */
7313 static const bfd_vma
*plt_entry
= NULL
;
7314 plt_entry
= info
->shared
?
7315 ppc_elf_vxworks_pic_plt0_entry
: ppc_elf_vxworks_plt0_entry
;
7320 (htab
->elf
.hgot
->root
.u
.def
.section
->output_section
->vma
7321 + htab
->elf
.hgot
->root
.u
.def
.section
->output_offset
7322 + htab
->elf
.hgot
->root
.u
.def
.value
);
7323 bfd_vma got_hi
= (got_value
>> 16) + ((got_value
& 0x8000) >> 15);
7325 bfd_put_32 (output_bfd
, plt_entry
[0] | (got_hi
& 0xffff),
7326 splt
->contents
+ 0);
7327 bfd_put_32 (output_bfd
, plt_entry
[1] | (got_value
& 0xffff),
7328 splt
->contents
+ 4);
7332 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
7333 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
7335 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
7336 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
7337 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
7338 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
7339 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
7340 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
7344 Elf_Internal_Rela rela
;
7347 loc
= htab
->srelplt2
->contents
;
7349 /* Output the @ha relocation for the first instruction. */
7350 rela
.r_offset
= (htab
->plt
->output_section
->vma
7351 + htab
->plt
->output_offset
7353 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
7355 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7356 loc
+= sizeof (Elf32_External_Rela
);
7358 /* Output the @l relocation for the second instruction. */
7359 rela
.r_offset
= (htab
->plt
->output_section
->vma
7360 + htab
->plt
->output_offset
7362 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
7364 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7365 loc
+= sizeof (Elf32_External_Rela
);
7367 /* Fix up the remaining relocations. They may have the wrong
7368 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7369 in which symbols were output. */
7370 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
7372 Elf_Internal_Rela rel
;
7374 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7375 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
7376 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7377 loc
+= sizeof (Elf32_External_Rela
);
7379 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7380 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
7381 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7382 loc
+= sizeof (Elf32_External_Rela
);
7384 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
7385 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
7386 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
7387 loc
+= sizeof (Elf32_External_Rela
);
7392 if (htab
->glink
!= NULL
&& htab
->glink
->contents
!= NULL
)
7395 unsigned char *endp
;
7400 * PIC glink code is the following:
7402 * # ith PLT code stub.
7403 * addis 11,30,(plt+(i-1)*4-got)@ha
7404 * lwz 11,(plt+(i-1)*4-got)@l(11)
7408 * # A table of branches, one for each plt entry.
7409 * # The idea is that the plt call stub loads ctr (and r11) with these
7410 * # addresses, so (r11 - res_0) gives the plt index * 4.
7411 * res_0: b PLTresolve
7412 * res_1: b PLTresolve
7414 * # Some number of entries towards the end can be nops
7420 * addis 11,11,(1f-res_0)@ha
7423 * 1: addi 11,11,(1b-res_0)@l
7426 * sub 11,11,12 # r11 = index * 4
7427 * addis 12,12,(got+4-1b)@ha
7428 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7429 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7432 * add 11,0,11 # r11 = index * 12 = reloc offset.
7435 static const unsigned int pic_plt_resolve
[] =
7455 static const unsigned int plt_resolve
[] =
7475 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
7477 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
7480 /* Build the branch table, one for each plt entry (less one),
7481 and perhaps some padding. */
7482 p
= htab
->glink
->contents
;
7483 p
+= htab
->glink_pltresolve
;
7484 endp
= htab
->glink
->contents
;
7485 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
7486 while (p
< endp
- 8 * 4)
7488 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
7493 bfd_put_32 (output_bfd
, NOP
, p
);
7497 res0
= (htab
->glink_pltresolve
7498 + htab
->glink
->output_section
->vma
7499 + htab
->glink
->output_offset
);
7501 /* Last comes the PLTresolve stub. */
7502 if (info
->shared
|| info
->pie
)
7506 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
7508 bfd_put_32 (output_bfd
, pic_plt_resolve
[i
], p
);
7511 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
7513 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
7514 + htab
->glink
->output_section
->vma
7515 + htab
->glink
->output_offset
);
7517 bfd_put_32 (output_bfd
,
7518 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
7519 bfd_put_32 (output_bfd
,
7520 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
7521 bfd_put_32 (output_bfd
,
7522 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
7523 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
7525 bfd_put_32 (output_bfd
,
7526 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
7527 bfd_put_32 (output_bfd
,
7528 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
7532 bfd_put_32 (output_bfd
,
7533 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
7534 bfd_put_32 (output_bfd
,
7535 LWZ_12_12
+ 4, p
+ 9*4);
7540 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
7542 bfd_put_32 (output_bfd
, plt_resolve
[i
], p
);
7545 p
-= 4 * ARRAY_SIZE (plt_resolve
);
7547 bfd_put_32 (output_bfd
,
7548 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
7549 bfd_put_32 (output_bfd
,
7550 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
7551 bfd_put_32 (output_bfd
,
7552 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
7553 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
7555 bfd_put_32 (output_bfd
,
7556 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
7557 bfd_put_32 (output_bfd
,
7558 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
7562 bfd_put_32 (output_bfd
,
7563 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
7564 bfd_put_32 (output_bfd
,
7565 LWZ_12_12
+ 4, p
+ 6*4);
7573 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
7574 #define TARGET_LITTLE_NAME "elf32-powerpcle"
7575 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
7576 #define TARGET_BIG_NAME "elf32-powerpc"
7577 #define ELF_ARCH bfd_arch_powerpc
7578 #define ELF_MACHINE_CODE EM_PPC
7579 #ifdef __QNXTARGET__
7580 #define ELF_MAXPAGESIZE 0x1000
7582 #define ELF_MAXPAGESIZE 0x10000
7584 #define ELF_MINPAGESIZE 0x1000
7585 #define ELF_COMMONPAGESIZE 0x1000
7586 #define elf_info_to_howto ppc_elf_info_to_howto
7588 #ifdef EM_CYGNUS_POWERPC
7589 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
7593 #define ELF_MACHINE_ALT2 EM_PPC_OLD
7596 #define elf_backend_plt_not_loaded 1
7597 #define elf_backend_can_gc_sections 1
7598 #define elf_backend_can_refcount 1
7599 #define elf_backend_rela_normal 1
7601 #define bfd_elf32_mkobject ppc_elf_mkobject
7602 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
7603 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
7604 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
7605 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
7606 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
7607 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
7609 #define elf_backend_object_p ppc_elf_object_p
7610 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
7611 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
7612 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
7613 #define elf_backend_relocate_section ppc_elf_relocate_section
7614 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
7615 #define elf_backend_check_relocs ppc_elf_check_relocs
7616 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
7617 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
7618 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
7619 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
7620 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
7621 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
7622 #define elf_backend_fake_sections ppc_elf_fake_sections
7623 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
7624 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
7625 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
7626 #define elf_backend_write_core_note ppc_elf_write_core_note
7627 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
7628 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
7629 #define elf_backend_final_write_processing ppc_elf_final_write_processing
7630 #define elf_backend_write_section ppc_elf_write_section
7631 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
7632 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
7633 #define elf_backend_action_discarded ppc_elf_action_discarded
7634 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
7636 #include "elf32-target.h"
7638 /* VxWorks Target */
7640 #undef TARGET_LITTLE_SYM
7641 #undef TARGET_LITTLE_NAME
7643 #undef TARGET_BIG_SYM
7644 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
7645 #undef TARGET_BIG_NAME
7646 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
7648 /* VxWorks uses the elf default section flags for .plt. */
7649 static const struct bfd_elf_special_section
*
7650 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
7652 if (sec
->name
== NULL
)
7655 if (strcmp (sec
->name
, ".plt") == 0)
7656 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
7658 return ppc_elf_get_sec_type_attr (abfd
, sec
);
7661 /* Like ppc_elf_link_hash_table_create, but overrides
7662 appropriately for VxWorks. */
7663 static struct bfd_link_hash_table
*
7664 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
7666 struct bfd_link_hash_table
*ret
;
7668 ret
= ppc_elf_link_hash_table_create (abfd
);
7671 struct ppc_elf_link_hash_table
*htab
7672 = (struct ppc_elf_link_hash_table
*)ret
;
7673 htab
->is_vxworks
= 1;
7674 htab
->plt_type
= PLT_VXWORKS
;
7675 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
7676 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
7677 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
7682 /* Tweak magic VxWorks symbols as they are loaded. */
7684 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
7685 struct bfd_link_info
*info
,
7686 Elf_Internal_Sym
*sym
,
7687 const char **namep ATTRIBUTE_UNUSED
,
7688 flagword
*flagsp ATTRIBUTE_UNUSED
,
7692 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
7696 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
7700 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
7702 ppc_elf_final_write_processing(abfd
, linker
);
7703 elf_vxworks_final_write_processing(abfd
, linker
);
7706 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
7708 #undef elf_backend_want_plt_sym
7709 #define elf_backend_want_plt_sym 1
7710 #undef elf_backend_want_got_plt
7711 #define elf_backend_want_got_plt 1
7712 #undef elf_backend_got_symbol_offset
7713 #define elf_backend_got_symbol_offset 0
7714 #undef elf_backend_plt_not_loaded
7715 #define elf_backend_plt_not_loaded 0
7716 #undef elf_backend_plt_readonly
7717 #define elf_backend_plt_readonly 1
7718 #undef elf_backend_got_header_size
7719 #define elf_backend_got_header_size 12
7721 #undef bfd_elf32_bfd_link_hash_table_create
7722 #define bfd_elf32_bfd_link_hash_table_create \
7723 ppc_elf_vxworks_link_hash_table_create
7724 #undef elf_backend_add_symbol_hook
7725 #define elf_backend_add_symbol_hook \
7726 ppc_elf_vxworks_add_symbol_hook
7727 #undef elf_backend_link_output_symbol_hook
7728 #define elf_backend_link_output_symbol_hook \
7729 elf_vxworks_link_output_symbol_hook
7730 #undef elf_backend_final_write_processing
7731 #define elf_backend_final_write_processing \
7732 ppc_elf_vxworks_final_write_processing
7733 #undef elf_backend_get_sec_type_attr
7734 #define elf_backend_get_sec_type_attr \
7735 ppc_elf_vxworks_get_sec_type_attr
7736 #undef elf_backend_emit_relocs
7737 #define elf_backend_emit_relocs \
7738 elf_vxworks_emit_relocs
7741 #define elf32_bed ppc_elf_vxworks_bed
7743 #include "elf32-target.h"