1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
24 /* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
36 #include "elf32-ppc.h"
37 #include "elf-vxworks.h"
39 /* RELA relocations are used here. */
41 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc_elf_unhandled_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 /* Branch prediction bit for branch taken relocs. */
47 #define BRANCH_PREDICT_BIT 0x200000
48 /* Mask to set RA in memory instructions. */
49 #define RA_REGISTER_MASK 0x001f0000
50 /* Value to shift register by to insert RA. */
51 #define RA_REGISTER_SHIFT 16
53 /* The name of the dynamic interpreter. This is put in the .interp
55 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
57 /* For old-style PLT. */
58 /* The number of single-slot PLT entries (the rest use two slots). */
59 #define PLT_NUM_SINGLE_ENTRIES 8192
61 /* For new-style .glink and .plt. */
62 #define GLINK_PLTRESOLVE 16*4
63 #define GLINK_ENTRY_SIZE 4*4
65 /* VxWorks uses its own plt layout, filled in by the static linker. */
67 /* The standard VxWorks PLT entry. */
68 #define VXWORKS_PLT_ENTRY_SIZE 32
69 static const bfd_vma ppc_elf_vxworks_plt_entry
70 [VXWORKS_PLT_ENTRY_SIZE / 4] =
72 0x3d800000, /* lis r12,0 */
73 0x818c0000, /* lwz r12,0(r12) */
74 0x7d8903a6, /* mtctr r12 */
75 0x4e800420, /* bctr */
76 0x39600000, /* li r11,0 */
77 0x48000000, /* b 14 <.PLT0resolve+0x4> */
81 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE / 4] =
84 0x3d9e0000, /* addis r12,r30,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
94 /* The initial VxWorks PLT entry. */
95 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
96 static const bfd_vma ppc_elf_vxworks_plt0_entry
97 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
99 0x3d800000, /* lis r12,0 */
100 0x398c0000, /* addi r12,r12,0 */
101 0x800c0008, /* lwz r0,8(r12) */
102 0x7c0903a6, /* mtctr r0 */
103 0x818c0004, /* lwz r12,4(r12) */
104 0x4e800420, /* bctr */
105 0x60000000, /* nop */
106 0x60000000, /* nop */
108 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
111 0x819e0008, /* lwz r12,8(r30) */
112 0x7d8903a6, /* mtctr r12 */
113 0x819e0004, /* lwz r12,4(r30) */
114 0x4e800420, /* bctr */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
121 /* For executables, we have some additional relocations in
122 .rela.plt.unloaded, for the kernel loader. */
124 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
125 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
126 /* The number of relocations in the PLTResolve slot. */
127 #define VXWORKS_PLTRESOLVE_RELOCS 2
128 /* The number of relocations in the PLTResolve slot when when creating
130 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
132 /* Some instructions. */
133 #define ADDIS_11_11 0x3d6b0000
134 #define ADDIS_11_30 0x3d7e0000
135 #define ADDIS_12_12 0x3d8c0000
136 #define ADDI_11_11 0x396b0000
137 #define ADD_0_11_11 0x7c0b5a14
138 #define ADD_11_0_11 0x7d605a14
140 #define BCL_20_31 0x429f0005
141 #define BCTR 0x4e800420
142 #define LIS_11 0x3d600000
143 #define LIS_12 0x3d800000
144 #define LWZU_0_12 0x840c0000
145 #define LWZ_0_12 0x800c0000
146 #define LWZ_11_11 0x816b0000
147 #define LWZ_11_30 0x817e0000
148 #define LWZ_12_12 0x818c0000
149 #define MFLR_0 0x7c0802a6
150 #define MFLR_12 0x7d8802a6
151 #define MTCTR_0 0x7c0903a6
152 #define MTCTR_11 0x7d6903a6
153 #define MTLR_0 0x7c0803a6
154 #define NOP 0x60000000
155 #define SUB_11_11_12 0x7d6c5850
157 /* Offset of tp and dtp pointers from start of TLS block. */
158 #define TP_OFFSET 0x7000
159 #define DTP_OFFSET 0x8000
161 /* The value of a defined global symbol. */
162 #define SYM_VAL(SYM) \
163 ((SYM)->root.u.def.section->output_section->vma \
164 + (SYM)->root.u.def.section->output_offset \
165 + (SYM)->root.u.def.value)
167 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
169 static reloc_howto_type ppc_elf_howto_raw[] = {
170 /* This reloc does nothing. */
171 HOWTO (R_PPC_NONE, /* type */
173 2, /* size (0 = byte, 1 = short, 2 = long) */
175 FALSE, /* pc_relative */
177 complain_overflow_bitfield, /* complain_on_overflow */
178 bfd_elf_generic_reloc, /* special_function */
179 "R_PPC_NONE", /* name */
180 FALSE, /* partial_inplace */
183 FALSE), /* pcrel_offset */
185 /* A standard 32 bit relocation. */
186 HOWTO (R_PPC_ADDR32, /* type */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
190 FALSE, /* pc_relative */
192 complain_overflow_bitfield, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_PPC_ADDR32", /* name */
195 FALSE, /* partial_inplace */
197 0xffffffff, /* dst_mask */
198 FALSE), /* pcrel_offset */
200 /* An absolute 26 bit branch; the lower two bits must be zero.
201 FIXME: we don't check that, we just clear them. */
202 HOWTO (R_PPC_ADDR24, /* type */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
206 FALSE, /* pc_relative */
208 complain_overflow_bitfield, /* complain_on_overflow */
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR24", /* name */
211 FALSE, /* partial_inplace */
213 0x3fffffc, /* dst_mask */
214 FALSE), /* pcrel_offset */
216 /* A standard 16 bit relocation. */
217 HOWTO (R_PPC_ADDR16, /* type */
219 1, /* size (0 = byte, 1 = short, 2 = long) */
221 FALSE, /* pc_relative */
223 complain_overflow_bitfield, /* complain_on_overflow */
224 bfd_elf_generic_reloc, /* special_function */
225 "R_PPC_ADDR16", /* name */
226 FALSE, /* partial_inplace */
228 0xffff, /* dst_mask */
229 FALSE), /* pcrel_offset */
231 /* A 16 bit relocation without overflow. */
232 HOWTO (R_PPC_ADDR16_LO, /* type */
234 1, /* size (0 = byte, 1 = short, 2 = long) */
236 FALSE, /* pc_relative */
238 complain_overflow_dont,/* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_PPC_ADDR16_LO", /* name */
241 FALSE, /* partial_inplace */
243 0xffff, /* dst_mask */
244 FALSE), /* pcrel_offset */
246 /* The high order 16 bits of an address. */
247 HOWTO (R_PPC_ADDR16_HI, /* type */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
251 FALSE, /* pc_relative */
253 complain_overflow_dont, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_PPC_ADDR16_HI", /* name */
256 FALSE, /* partial_inplace */
258 0xffff, /* dst_mask */
259 FALSE), /* pcrel_offset */
261 /* The high order 16 bits of an address, plus 1 if the contents of
262 the low 16 bits, treated as a signed number, is negative. */
263 HOWTO (R_PPC_ADDR16_HA, /* type */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE, /* pc_relative */
269 complain_overflow_dont, /* complain_on_overflow */
270 ppc_elf_addr16_ha_reloc, /* special_function */
271 "R_PPC_ADDR16_HA", /* name */
272 FALSE, /* partial_inplace */
274 0xffff, /* dst_mask */
275 FALSE), /* pcrel_offset */
277 /* An absolute 16 bit branch; the lower two bits must be zero.
278 FIXME: we don't check that, we just clear them. */
279 HOWTO (R_PPC_ADDR14, /* type */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE, /* pc_relative */
285 complain_overflow_bitfield, /* complain_on_overflow */
286 bfd_elf_generic_reloc, /* special_function */
287 "R_PPC_ADDR14", /* name */
288 FALSE, /* partial_inplace */
290 0xfffc, /* dst_mask */
291 FALSE), /* pcrel_offset */
293 /* An absolute 16 bit branch, for which bit 10 should be set to
294 indicate that the branch is expected to be taken. The lower two
295 bits must be zero. */
296 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_bitfield, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14_BRTAKEN",/* name */
305 FALSE, /* partial_inplace */
307 0xfffc, /* dst_mask */
308 FALSE), /* pcrel_offset */
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is not expected to be taken. The lower
312 two bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_bitfield, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRNTAKEN",/* name */
322 FALSE, /* partial_inplace */
324 0xfffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
327 /* A relative 26 bit branch; the lower two bits must be zero. */
328 HOWTO (R_PPC_REL24, /* type */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
332 TRUE, /* pc_relative */
334 complain_overflow_signed, /* complain_on_overflow */
335 bfd_elf_generic_reloc, /* special_function */
336 "R_PPC_REL24", /* name */
337 FALSE, /* partial_inplace */
339 0x3fffffc, /* dst_mask */
340 TRUE), /* pcrel_offset */
342 /* A relative 16 bit branch; the lower two bits must be zero. */
343 HOWTO (R_PPC_REL14, /* type */
345 2, /* size (0 = byte, 1 = short, 2 = long) */
347 TRUE, /* pc_relative */
349 complain_overflow_signed, /* complain_on_overflow */
350 bfd_elf_generic_reloc, /* special_function */
351 "R_PPC_REL14", /* name */
352 FALSE, /* partial_inplace */
354 0xfffc, /* dst_mask */
355 TRUE), /* pcrel_offset */
357 /* A relative 16 bit branch. Bit 10 should be set to indicate that
358 the branch is expected to be taken. The lower two bits must be
360 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 TRUE, /* pc_relative */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14_BRTAKEN", /* name */
369 FALSE, /* partial_inplace */
371 0xfffc, /* dst_mask */
372 TRUE), /* pcrel_offset */
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is not expected to be taken. The lower two bits must
377 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRNTAKEN",/* name */
386 FALSE, /* partial_inplace */
388 0xfffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
391 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
393 HOWTO (R_PPC_GOT16, /* type */
395 1, /* size (0 = byte, 1 = short, 2 = long) */
397 FALSE, /* pc_relative */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_GOT16", /* name */
402 FALSE, /* partial_inplace */
404 0xffff, /* dst_mask */
405 FALSE), /* pcrel_offset */
407 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
409 HOWTO (R_PPC_GOT16_LO, /* type */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE, /* pc_relative */
415 complain_overflow_dont, /* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_PPC_GOT16_LO", /* name */
418 FALSE, /* partial_inplace */
420 0xffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
423 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
425 HOWTO (R_PPC_GOT16_HI, /* type */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
429 FALSE, /* pc_relative */
431 complain_overflow_bitfield, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_PPC_GOT16_HI", /* name */
434 FALSE, /* partial_inplace */
436 0xffff, /* dst_mask */
437 FALSE), /* pcrel_offset */
439 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
441 HOWTO (R_PPC_GOT16_HA, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE, /* pc_relative */
447 complain_overflow_bitfield, /* complain_on_overflow */
448 ppc_elf_addr16_ha_reloc, /* special_function */
449 "R_PPC_GOT16_HA", /* name */
450 FALSE, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE), /* pcrel_offset */
455 /* Like R_PPC_REL24, but referring to the procedure linkage table
456 entry for the symbol. */
457 HOWTO (R_PPC_PLTREL24, /* type */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
461 TRUE, /* pc_relative */
463 complain_overflow_signed, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_PPC_PLTREL24", /* name */
466 FALSE, /* partial_inplace */
468 0x3fffffc, /* dst_mask */
469 TRUE), /* pcrel_offset */
471 /* This is used only by the dynamic linker. The symbol should exist
472 both in the object being run and in some shared library. The
473 dynamic linker copies the data addressed by the symbol from the
474 shared library into the object, because the object being
475 run has to have the data at some particular address. */
476 HOWTO (R_PPC_COPY, /* type */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
480 FALSE, /* pc_relative */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC_COPY", /* name */
485 FALSE, /* partial_inplace */
488 FALSE), /* pcrel_offset */
490 /* Like R_PPC_ADDR32, but used when setting global offset table
492 HOWTO (R_PPC_GLOB_DAT, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE, /* pc_relative */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_PPC_GLOB_DAT", /* name */
501 FALSE, /* partial_inplace */
503 0xffffffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
506 /* Marks a procedure linkage table entry for a symbol. */
507 HOWTO (R_PPC_JMP_SLOT, /* type */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
511 FALSE, /* pc_relative */
513 complain_overflow_bitfield, /* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_PPC_JMP_SLOT", /* name */
516 FALSE, /* partial_inplace */
519 FALSE), /* pcrel_offset */
521 /* Used only by the dynamic linker. When the object is run, this
522 longword is set to the load address of the object, plus the
524 HOWTO (R_PPC_RELATIVE, /* type */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE, /* pc_relative */
530 complain_overflow_bitfield, /* complain_on_overflow */
531 bfd_elf_generic_reloc, /* special_function */
532 "R_PPC_RELATIVE", /* name */
533 FALSE, /* partial_inplace */
535 0xffffffff, /* dst_mask */
536 FALSE), /* pcrel_offset */
538 /* Like R_PPC_REL24, but uses the value of the symbol within the
539 object rather than the final value. Normally used for
540 _GLOBAL_OFFSET_TABLE_. */
541 HOWTO (R_PPC_LOCAL24PC, /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 TRUE, /* pc_relative */
547 complain_overflow_signed, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_LOCAL24PC", /* name */
550 FALSE, /* partial_inplace */
552 0x3fffffc, /* dst_mask */
553 TRUE), /* pcrel_offset */
555 /* Like R_PPC_ADDR32, but may be unaligned. */
556 HOWTO (R_PPC_UADDR32, /* type */
558 2, /* size (0 = byte, 1 = short, 2 = long) */
560 FALSE, /* pc_relative */
562 complain_overflow_bitfield, /* complain_on_overflow */
563 bfd_elf_generic_reloc, /* special_function */
564 "R_PPC_UADDR32", /* name */
565 FALSE, /* partial_inplace */
567 0xffffffff, /* dst_mask */
568 FALSE), /* pcrel_offset */
570 /* Like R_PPC_ADDR16, but may be unaligned. */
571 HOWTO (R_PPC_UADDR16, /* type */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
575 FALSE, /* pc_relative */
577 complain_overflow_bitfield, /* complain_on_overflow */
578 bfd_elf_generic_reloc, /* special_function */
579 "R_PPC_UADDR16", /* name */
580 FALSE, /* partial_inplace */
582 0xffff, /* dst_mask */
583 FALSE), /* pcrel_offset */
585 /* 32-bit PC relative */
586 HOWTO (R_PPC_REL32, /* type */
588 2, /* size (0 = byte, 1 = short, 2 = long) */
590 TRUE, /* pc_relative */
592 complain_overflow_bitfield, /* complain_on_overflow */
593 bfd_elf_generic_reloc, /* special_function */
594 "R_PPC_REL32", /* name */
595 FALSE, /* partial_inplace */
597 0xffffffff, /* dst_mask */
598 TRUE), /* pcrel_offset */
600 /* 32-bit relocation to the symbol's procedure linkage table.
601 FIXME: not supported. */
602 HOWTO (R_PPC_PLT32, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 FALSE, /* pc_relative */
608 complain_overflow_bitfield, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_PLT32", /* name */
611 FALSE, /* partial_inplace */
614 FALSE), /* pcrel_offset */
616 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
617 FIXME: not supported. */
618 HOWTO (R_PPC_PLTREL32, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 TRUE, /* pc_relative */
624 complain_overflow_bitfield, /* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_PPC_PLTREL32", /* name */
627 FALSE, /* partial_inplace */
630 TRUE), /* pcrel_offset */
632 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
634 HOWTO (R_PPC_PLT16_LO, /* type */
636 1, /* size (0 = byte, 1 = short, 2 = long) */
638 FALSE, /* pc_relative */
640 complain_overflow_dont, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_PPC_PLT16_LO", /* name */
643 FALSE, /* partial_inplace */
645 0xffff, /* dst_mask */
646 FALSE), /* pcrel_offset */
648 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
650 HOWTO (R_PPC_PLT16_HI, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE, /* pc_relative */
656 complain_overflow_bitfield, /* complain_on_overflow */
657 bfd_elf_generic_reloc, /* special_function */
658 "R_PPC_PLT16_HI", /* name */
659 FALSE, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE), /* pcrel_offset */
664 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
666 HOWTO (R_PPC_PLT16_HA, /* type */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE, /* pc_relative */
672 complain_overflow_bitfield, /* complain_on_overflow */
673 ppc_elf_addr16_ha_reloc, /* special_function */
674 "R_PPC_PLT16_HA", /* name */
675 FALSE, /* partial_inplace */
677 0xffff, /* dst_mask */
678 FALSE), /* pcrel_offset */
680 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
682 HOWTO (R_PPC_SDAREL16, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE, /* pc_relative */
688 complain_overflow_signed, /* complain_on_overflow */
689 bfd_elf_generic_reloc, /* special_function */
690 "R_PPC_SDAREL16", /* name */
691 FALSE, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
696 /* 16-bit section relative relocation. */
697 HOWTO (R_PPC_SECTOFF, /* type */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
701 FALSE, /* pc_relative */
703 complain_overflow_bitfield, /* complain_on_overflow */
704 bfd_elf_generic_reloc, /* special_function */
705 "R_PPC_SECTOFF", /* name */
706 FALSE, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE), /* pcrel_offset */
711 /* 16-bit lower half section relative relocation. */
712 HOWTO (R_PPC_SECTOFF_LO, /* type */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
716 FALSE, /* pc_relative */
718 complain_overflow_dont, /* complain_on_overflow */
719 bfd_elf_generic_reloc, /* special_function */
720 "R_PPC_SECTOFF_LO", /* name */
721 FALSE, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
726 /* 16-bit upper half section relative relocation. */
727 HOWTO (R_PPC_SECTOFF_HI, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE, /* pc_relative */
733 complain_overflow_bitfield, /* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_PPC_SECTOFF_HI", /* name */
736 FALSE, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE), /* pcrel_offset */
741 /* 16-bit upper half adjusted section relative relocation. */
742 HOWTO (R_PPC_SECTOFF_HA, /* type */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
746 FALSE, /* pc_relative */
748 complain_overflow_bitfield, /* complain_on_overflow */
749 ppc_elf_addr16_ha_reloc, /* special_function */
750 "R_PPC_SECTOFF_HA", /* name */
751 FALSE, /* partial_inplace */
753 0xffff, /* dst_mask */
754 FALSE), /* pcrel_offset */
756 /* Marker reloc for TLS. */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
761 FALSE, /* pc_relative */
763 complain_overflow_dont, /* complain_on_overflow */
764 bfd_elf_generic_reloc, /* special_function */
765 "R_PPC_TLS", /* name */
766 FALSE, /* partial_inplace */
769 FALSE), /* pcrel_offset */
771 /* Computes the load module index of the load module that contains the
772 definition of its TLS sym. */
773 HOWTO (R_PPC_DTPMOD32,
775 2, /* size (0 = byte, 1 = short, 2 = long) */
777 FALSE, /* pc_relative */
779 complain_overflow_dont, /* complain_on_overflow */
780 ppc_elf_unhandled_reloc, /* special_function */
781 "R_PPC_DTPMOD32", /* name */
782 FALSE, /* partial_inplace */
784 0xffffffff, /* dst_mask */
785 FALSE), /* pcrel_offset */
787 /* Computes a dtv-relative displacement, the difference between the value
788 of sym+add and the base address of the thread-local storage block that
789 contains the definition of sym, minus 0x8000. */
790 HOWTO (R_PPC_DTPREL32,
792 2, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE, /* pc_relative */
796 complain_overflow_dont, /* complain_on_overflow */
797 ppc_elf_unhandled_reloc, /* special_function */
798 "R_PPC_DTPREL32", /* name */
799 FALSE, /* partial_inplace */
801 0xffffffff, /* dst_mask */
802 FALSE), /* pcrel_offset */
804 /* A 16 bit dtprel reloc. */
805 HOWTO (R_PPC_DTPREL16,
807 1, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE, /* pc_relative */
811 complain_overflow_signed, /* complain_on_overflow */
812 ppc_elf_unhandled_reloc, /* special_function */
813 "R_PPC_DTPREL16", /* name */
814 FALSE, /* partial_inplace */
816 0xffff, /* dst_mask */
817 FALSE), /* pcrel_offset */
819 /* Like DTPREL16, but no overflow. */
820 HOWTO (R_PPC_DTPREL16_LO,
822 1, /* size (0 = byte, 1 = short, 2 = long) */
824 FALSE, /* pc_relative */
826 complain_overflow_dont, /* complain_on_overflow */
827 ppc_elf_unhandled_reloc, /* special_function */
828 "R_PPC_DTPREL16_LO", /* name */
829 FALSE, /* partial_inplace */
831 0xffff, /* dst_mask */
832 FALSE), /* pcrel_offset */
834 /* Like DTPREL16_LO, but next higher group of 16 bits. */
835 HOWTO (R_PPC_DTPREL16_HI,
837 1, /* size (0 = byte, 1 = short, 2 = long) */
839 FALSE, /* pc_relative */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL16_HI", /* name */
844 FALSE, /* partial_inplace */
846 0xffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
849 /* Like DTPREL16_HI, but adjust for low 16 bits. */
850 HOWTO (R_PPC_DTPREL16_HA,
852 1, /* size (0 = byte, 1 = short, 2 = long) */
854 FALSE, /* pc_relative */
856 complain_overflow_dont, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16_HA", /* name */
859 FALSE, /* partial_inplace */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
864 /* Computes a tp-relative displacement, the difference between the value of
865 sym+add and the value of the thread pointer (r13). */
866 HOWTO (R_PPC_TPREL32,
868 2, /* size (0 = byte, 1 = short, 2 = long) */
870 FALSE, /* pc_relative */
872 complain_overflow_dont, /* complain_on_overflow */
873 ppc_elf_unhandled_reloc, /* special_function */
874 "R_PPC_TPREL32", /* name */
875 FALSE, /* partial_inplace */
877 0xffffffff, /* dst_mask */
878 FALSE), /* pcrel_offset */
880 /* A 16 bit tprel reloc. */
881 HOWTO (R_PPC_TPREL16,
883 1, /* size (0 = byte, 1 = short, 2 = long) */
885 FALSE, /* pc_relative */
887 complain_overflow_signed, /* complain_on_overflow */
888 ppc_elf_unhandled_reloc, /* special_function */
889 "R_PPC_TPREL16", /* name */
890 FALSE, /* partial_inplace */
892 0xffff, /* dst_mask */
893 FALSE), /* pcrel_offset */
895 /* Like TPREL16, but no overflow. */
896 HOWTO (R_PPC_TPREL16_LO,
898 1, /* size (0 = byte, 1 = short, 2 = long) */
900 FALSE, /* pc_relative */
902 complain_overflow_dont, /* complain_on_overflow */
903 ppc_elf_unhandled_reloc, /* special_function */
904 "R_PPC_TPREL16_LO", /* name */
905 FALSE, /* partial_inplace */
907 0xffff, /* dst_mask */
908 FALSE), /* pcrel_offset */
910 /* Like TPREL16_LO, but next higher group of 16 bits. */
911 HOWTO (R_PPC_TPREL16_HI,
913 1, /* size (0 = byte, 1 = short, 2 = long) */
915 FALSE, /* pc_relative */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL16_HI", /* name */
920 FALSE, /* partial_inplace */
922 0xffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
925 /* Like TPREL16_HI, but adjust for low 16 bits. */
926 HOWTO (R_PPC_TPREL16_HA,
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_dont, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16_HA", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
941 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
942 to the first entry. */
943 HOWTO (R_PPC_GOT_TLSGD16,
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_signed, /* complain_on_overflow */
950 ppc_elf_unhandled_reloc, /* special_function */
951 "R_PPC_GOT_TLSGD16", /* name */
952 FALSE, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* Like GOT_TLSGD16, but no overflow. */
958 HOWTO (R_PPC_GOT_TLSGD16_LO,
960 1, /* size (0 = byte, 1 = short, 2 = long) */
962 FALSE, /* pc_relative */
964 complain_overflow_dont, /* complain_on_overflow */
965 ppc_elf_unhandled_reloc, /* special_function */
966 "R_PPC_GOT_TLSGD16_LO", /* name */
967 FALSE, /* partial_inplace */
969 0xffff, /* dst_mask */
970 FALSE), /* pcrel_offset */
972 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
973 HOWTO (R_PPC_GOT_TLSGD16_HI,
975 1, /* size (0 = byte, 1 = short, 2 = long) */
977 FALSE, /* pc_relative */
979 complain_overflow_dont, /* complain_on_overflow */
980 ppc_elf_unhandled_reloc, /* special_function */
981 "R_PPC_GOT_TLSGD16_HI", /* name */
982 FALSE, /* partial_inplace */
984 0xffff, /* dst_mask */
985 FALSE), /* pcrel_offset */
987 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
988 HOWTO (R_PPC_GOT_TLSGD16_HA,
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE, /* pc_relative */
994 complain_overflow_dont, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16_HA", /* name */
997 FALSE, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1002 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1003 with values (sym+add)@dtpmod and zero, and computes the offset to the
1005 HOWTO (R_PPC_GOT_TLSLD16,
1007 1, /* size (0 = byte, 1 = short, 2 = long) */
1009 FALSE, /* pc_relative */
1011 complain_overflow_signed, /* complain_on_overflow */
1012 ppc_elf_unhandled_reloc, /* special_function */
1013 "R_PPC_GOT_TLSLD16", /* name */
1014 FALSE, /* partial_inplace */
1016 0xffff, /* dst_mask */
1017 FALSE), /* pcrel_offset */
1019 /* Like GOT_TLSLD16, but no overflow. */
1020 HOWTO (R_PPC_GOT_TLSLD16_LO,
1022 1, /* size (0 = byte, 1 = short, 2 = long) */
1024 FALSE, /* pc_relative */
1026 complain_overflow_dont, /* complain_on_overflow */
1027 ppc_elf_unhandled_reloc, /* special_function */
1028 "R_PPC_GOT_TLSLD16_LO", /* name */
1029 FALSE, /* partial_inplace */
1031 0xffff, /* dst_mask */
1032 FALSE), /* pcrel_offset */
1034 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1035 HOWTO (R_PPC_GOT_TLSLD16_HI,
1036 16, /* rightshift */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE, /* pc_relative */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc_elf_unhandled_reloc, /* special_function */
1043 "R_PPC_GOT_TLSLD16_HI", /* name */
1044 FALSE, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1049 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1050 HOWTO (R_PPC_GOT_TLSLD16_HA,
1051 16, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE, /* pc_relative */
1056 complain_overflow_dont, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16_HA", /* name */
1059 FALSE, /* partial_inplace */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1064 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1065 the offset to the entry. */
1066 HOWTO (R_PPC_GOT_DTPREL16,
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1070 FALSE, /* pc_relative */
1072 complain_overflow_signed, /* complain_on_overflow */
1073 ppc_elf_unhandled_reloc, /* special_function */
1074 "R_PPC_GOT_DTPREL16", /* name */
1075 FALSE, /* partial_inplace */
1077 0xffff, /* dst_mask */
1078 FALSE), /* pcrel_offset */
1080 /* Like GOT_DTPREL16, but no overflow. */
1081 HOWTO (R_PPC_GOT_DTPREL16_LO,
1083 1, /* size (0 = byte, 1 = short, 2 = long) */
1085 FALSE, /* pc_relative */
1087 complain_overflow_dont, /* complain_on_overflow */
1088 ppc_elf_unhandled_reloc, /* special_function */
1089 "R_PPC_GOT_DTPREL16_LO", /* name */
1090 FALSE, /* partial_inplace */
1092 0xffff, /* dst_mask */
1093 FALSE), /* pcrel_offset */
1095 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1096 HOWTO (R_PPC_GOT_DTPREL16_HI,
1097 16, /* rightshift */
1098 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 FALSE, /* pc_relative */
1102 complain_overflow_dont, /* complain_on_overflow */
1103 ppc_elf_unhandled_reloc, /* special_function */
1104 "R_PPC_GOT_DTPREL16_HI", /* name */
1105 FALSE, /* partial_inplace */
1107 0xffff, /* dst_mask */
1108 FALSE), /* pcrel_offset */
1110 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1111 HOWTO (R_PPC_GOT_DTPREL16_HA,
1112 16, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE, /* pc_relative */
1117 complain_overflow_dont, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16_HA", /* name */
1120 FALSE, /* partial_inplace */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1125 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1126 offset to the entry. */
1127 HOWTO (R_PPC_GOT_TPREL16,
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE, /* pc_relative */
1133 complain_overflow_signed, /* complain_on_overflow */
1134 ppc_elf_unhandled_reloc, /* special_function */
1135 "R_PPC_GOT_TPREL16", /* name */
1136 FALSE, /* partial_inplace */
1138 0xffff, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1141 /* Like GOT_TPREL16, but no overflow. */
1142 HOWTO (R_PPC_GOT_TPREL16_LO,
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE, /* pc_relative */
1148 complain_overflow_dont, /* complain_on_overflow */
1149 ppc_elf_unhandled_reloc, /* special_function */
1150 "R_PPC_GOT_TPREL16_LO", /* name */
1151 FALSE, /* partial_inplace */
1153 0xffff, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1156 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1157 HOWTO (R_PPC_GOT_TPREL16_HI,
1158 16, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE, /* pc_relative */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc_elf_unhandled_reloc, /* special_function */
1165 "R_PPC_GOT_TPREL16_HI", /* name */
1166 FALSE, /* partial_inplace */
1168 0xffff, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1171 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1172 HOWTO (R_PPC_GOT_TPREL16_HA,
1173 16, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16_HA", /* name */
1181 FALSE, /* partial_inplace */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* The remaining relocs are from the Embedded ELF ABI, and are not
1187 in the SVR4 ELF ABI. */
1189 /* 32 bit value resulting from the addend minus the symbol. */
1190 HOWTO (R_PPC_EMB_NADDR32, /* type */
1192 2, /* size (0 = byte, 1 = short, 2 = long) */
1194 FALSE, /* pc_relative */
1196 complain_overflow_bitfield, /* complain_on_overflow */
1197 bfd_elf_generic_reloc, /* special_function */
1198 "R_PPC_EMB_NADDR32", /* name */
1199 FALSE, /* partial_inplace */
1201 0xffffffff, /* dst_mask */
1202 FALSE), /* pcrel_offset */
1204 /* 16 bit value resulting from the addend minus the symbol. */
1205 HOWTO (R_PPC_EMB_NADDR16, /* type */
1207 1, /* size (0 = byte, 1 = short, 2 = long) */
1209 FALSE, /* pc_relative */
1211 complain_overflow_bitfield, /* complain_on_overflow */
1212 bfd_elf_generic_reloc, /* special_function */
1213 "R_PPC_EMB_NADDR16", /* name */
1214 FALSE, /* partial_inplace */
1216 0xffff, /* dst_mask */
1217 FALSE), /* pcrel_offset */
1219 /* 16 bit value resulting from the addend minus the symbol. */
1220 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_dont,/* complain_on_overflow */
1227 bfd_elf_generic_reloc, /* special_function */
1228 "R_PPC_EMB_ADDR16_LO", /* name */
1229 FALSE, /* partial_inplace */
1231 0xffff, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* The high order 16 bits of the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1236 16, /* rightshift */
1237 1, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE, /* pc_relative */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 bfd_elf_generic_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR16_HI", /* name */
1244 FALSE, /* partial_inplace */
1246 0xffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1249 /* The high order 16 bits of the result of the addend minus the address,
1250 plus 1 if the contents of the low 16 bits, treated as a signed number,
1252 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1253 16, /* rightshift */
1254 1, /* size (0 = byte, 1 = short, 2 = long) */
1256 FALSE, /* pc_relative */
1258 complain_overflow_dont, /* complain_on_overflow */
1259 ppc_elf_addr16_ha_reloc, /* special_function */
1260 "R_PPC_EMB_NADDR16_HA", /* name */
1261 FALSE, /* partial_inplace */
1263 0xffff, /* dst_mask */
1264 FALSE), /* pcrel_offset */
1266 /* 16 bit value resulting from allocating a 4 byte word to hold an
1267 address in the .sdata section, and returning the offset from
1268 _SDA_BASE_ for that relocation. */
1269 HOWTO (R_PPC_EMB_SDAI16, /* type */
1271 1, /* size (0 = byte, 1 = short, 2 = long) */
1273 FALSE, /* pc_relative */
1275 complain_overflow_bitfield, /* complain_on_overflow */
1276 bfd_elf_generic_reloc, /* special_function */
1277 "R_PPC_EMB_SDAI16", /* name */
1278 FALSE, /* partial_inplace */
1280 0xffff, /* dst_mask */
1281 FALSE), /* pcrel_offset */
1283 /* 16 bit value resulting from allocating a 4 byte word to hold an
1284 address in the .sdata2 section, and returning the offset from
1285 _SDA2_BASE_ for that relocation. */
1286 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1288 1, /* size (0 = byte, 1 = short, 2 = long) */
1290 FALSE, /* pc_relative */
1292 complain_overflow_bitfield, /* complain_on_overflow */
1293 bfd_elf_generic_reloc, /* special_function */
1294 "R_PPC_EMB_SDA2I16", /* name */
1295 FALSE, /* partial_inplace */
1297 0xffff, /* dst_mask */
1298 FALSE), /* pcrel_offset */
1300 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1301 small data items. */
1302 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 FALSE, /* pc_relative */
1308 complain_overflow_signed, /* complain_on_overflow */
1309 bfd_elf_generic_reloc, /* special_function */
1310 "R_PPC_EMB_SDA2REL", /* name */
1311 FALSE, /* partial_inplace */
1313 0xffff, /* dst_mask */
1314 FALSE), /* pcrel_offset */
1316 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1317 signed offset from the appropriate base, and filling in the register
1318 field with the appropriate register (0, 2, or 13). */
1319 HOWTO (R_PPC_EMB_SDA21, /* type */
1321 2, /* size (0 = byte, 1 = short, 2 = long) */
1323 FALSE, /* pc_relative */
1325 complain_overflow_signed, /* complain_on_overflow */
1326 bfd_elf_generic_reloc, /* special_function */
1327 "R_PPC_EMB_SDA21", /* name */
1328 FALSE, /* partial_inplace */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1333 /* Relocation not handled: R_PPC_EMB_MRKREF */
1334 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1335 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1336 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1337 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1338 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1340 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1341 in the 16 bit signed offset from the appropriate base, and filling in the
1342 register field with the appropriate register (0, 2, or 13). */
1343 HOWTO (R_PPC_EMB_RELSDA, /* type */
1345 1, /* size (0 = byte, 1 = short, 2 = long) */
1347 TRUE, /* pc_relative */
1349 complain_overflow_signed, /* complain_on_overflow */
1350 bfd_elf_generic_reloc, /* special_function */
1351 "R_PPC_EMB_RELSDA", /* name */
1352 FALSE, /* partial_inplace */
1354 0xffff, /* dst_mask */
1355 FALSE), /* pcrel_offset */
1357 /* A 16 bit relative relocation. */
1358 HOWTO (R_PPC_REL16, /* type */
1360 1, /* size (0 = byte, 1 = short, 2 = long) */
1362 TRUE, /* pc_relative */
1364 complain_overflow_bitfield, /* complain_on_overflow */
1365 bfd_elf_generic_reloc, /* special_function */
1366 "R_PPC_REL16", /* name */
1367 FALSE, /* partial_inplace */
1369 0xffff, /* dst_mask */
1370 TRUE), /* pcrel_offset */
1372 /* A 16 bit relative relocation without overflow. */
1373 HOWTO (R_PPC_REL16_LO, /* type */
1375 1, /* size (0 = byte, 1 = short, 2 = long) */
1377 TRUE, /* pc_relative */
1379 complain_overflow_dont,/* complain_on_overflow */
1380 bfd_elf_generic_reloc, /* special_function */
1381 "R_PPC_REL16_LO", /* name */
1382 FALSE, /* partial_inplace */
1384 0xffff, /* dst_mask */
1385 TRUE), /* pcrel_offset */
1387 /* The high order 16 bits of a relative address. */
1388 HOWTO (R_PPC_REL16_HI, /* type */
1389 16, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 TRUE, /* pc_relative */
1394 complain_overflow_dont, /* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 "R_PPC_REL16_HI", /* name */
1397 FALSE, /* partial_inplace */
1399 0xffff, /* dst_mask */
1400 TRUE), /* pcrel_offset */
1402 /* The high order 16 bits of a relative address, plus 1 if the contents of
1403 the low 16 bits, treated as a signed number, is negative. */
1404 HOWTO (R_PPC_REL16_HA, /* type */
1405 16, /* rightshift */
1406 1, /* size (0 = byte, 1 = short, 2 = long) */
1408 TRUE, /* pc_relative */
1410 complain_overflow_dont, /* complain_on_overflow */
1411 ppc_elf_addr16_ha_reloc, /* special_function */
1412 "R_PPC_REL16_HA", /* name */
1413 FALSE, /* partial_inplace */
1415 0xffff, /* dst_mask */
1416 TRUE), /* pcrel_offset */
1418 /* GNU extension to record C++ vtable hierarchy. */
1419 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1421 0, /* size (0 = byte, 1 = short, 2 = long) */
1423 FALSE, /* pc_relative */
1425 complain_overflow_dont, /* complain_on_overflow */
1426 NULL, /* special_function */
1427 "R_PPC_GNU_VTINHERIT", /* name */
1428 FALSE, /* partial_inplace */
1431 FALSE), /* pcrel_offset */
1433 /* GNU extension to record C++ vtable member usage. */
1434 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1436 0, /* size (0 = byte, 1 = short, 2 = long) */
1438 FALSE, /* pc_relative */
1440 complain_overflow_dont, /* complain_on_overflow */
1441 NULL, /* special_function */
1442 "R_PPC_GNU_VTENTRY", /* name */
1443 FALSE, /* partial_inplace */
1446 FALSE), /* pcrel_offset */
1448 /* Phony reloc to handle AIX style TOC entries. */
1449 HOWTO (R_PPC_TOC16, /* type */
1451 1, /* size (0 = byte, 1 = short, 2 = long) */
1453 FALSE, /* pc_relative */
1455 complain_overflow_signed, /* complain_on_overflow */
1456 bfd_elf_generic_reloc, /* special_function */
1457 "R_PPC_TOC16", /* name */
1458 FALSE, /* partial_inplace */
1460 0xffff, /* dst_mask */
1461 FALSE), /* pcrel_offset */
1464 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1467 ppc_elf_howto_init (void)
1469 unsigned int i, type;
1472 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1475 type = ppc_elf_howto_raw[i].type;
1476 if (type >= (sizeof (ppc_elf_howto_table)
1477 / sizeof (ppc_elf_howto_table[0])))
1479 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1483 static reloc_howto_type *
1484 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1485 bfd_reloc_code_real_type code)
1487 enum elf_ppc_reloc_type r;
1489 /* Initialize howto table if not already done. */
1490 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1491 ppc_elf_howto_init ();
1498 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1499 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1500 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1501 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1502 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1503 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1504 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1505 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1506 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1507 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1508 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1509 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1510 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1511 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1512 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1513 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1514 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1515 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1516 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1517 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1518 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1519 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1520 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1521 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1522 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1523 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1524 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1525 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1526 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1527 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1528 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1529 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1530 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1531 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1532 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1533 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1534 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1535 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1536 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1537 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1538 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1539 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1540 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1541 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1542 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1543 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1544 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1545 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1546 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1547 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1548 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1549 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1550 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1551 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1552 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1553 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1554 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1555 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1556 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1557 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1558 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1559 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1560 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1561 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1562 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1563 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1564 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1565 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1566 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1567 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1568 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1569 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1570 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1571 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1572 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1573 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1574 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1575 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1576 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1577 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1578 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1579 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1580 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1581 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1582 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1585 return ppc_elf_howto_table[r];
1588 static reloc_howto_type *
1589 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1595 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1597 if (ppc_elf_howto_raw[i].name != NULL
1598 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1599 return &ppc_elf_howto_raw[i];
1604 /* Set the howto pointer for a PowerPC ELF reloc. */
1607 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1609 Elf_Internal_Rela *dst)
1611 /* Initialize howto table if not already done. */
1612 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1613 ppc_elf_howto_init ();
1615 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1616 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1618 /* Just because the above assert didn't trigger doesn't mean that
1619 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1620 if (!cache_ptr->howto)
1622 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1623 abfd, ELF32_R_TYPE (dst->r_info));
1624 bfd_set_error (bfd_error_bad_value);
1626 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1630 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1632 static bfd_reloc_status_type
1633 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1634 arelent *reloc_entry,
1636 void *data ATTRIBUTE_UNUSED,
1637 asection *input_section,
1639 char **error_message ATTRIBUTE_UNUSED)
1643 if (output_bfd != NULL)
1645 reloc_entry->address += input_section->output_offset;
1646 return bfd_reloc_ok;
1649 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1650 return bfd_reloc_outofrange;
1652 if (bfd_is_com_section (symbol->section))
1655 relocation = symbol->value;
1657 relocation += symbol->section->output_section->vma;
1658 relocation += symbol->section->output_offset;
1659 relocation += reloc_entry->addend;
1660 if (reloc_entry->howto->pc_relative)
1661 relocation -= reloc_entry->address;
1663 reloc_entry->addend += (relocation & 0x8000) << 1;
1665 return bfd_reloc_continue;
1668 static bfd_reloc_status_type
1669 ppc_elf_unhandled_reloc (bfd *abfd,
1670 arelent *reloc_entry,
1673 asection *input_section,
1675 char **error_message)
1677 /* If this is a relocatable link (output_bfd test tells us), just
1678 call the generic function. Any adjustment will be done at final
1680 if (output_bfd != NULL)
1681 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1682 input_section, output_bfd, error_message);
1684 if (error_message != NULL)
1686 static char buf[60];
1687 sprintf (buf, _("generic linker can't handle %s"),
1688 reloc_entry->howto->name);
1689 *error_message = buf;
1691 return bfd_reloc_dangerous;
1694 /* Sections created by the linker. */
1696 typedef struct elf_linker_section
1698 /* Pointer to the bfd section. */
1702 /* Associated bss section name. */
1703 const char *bss_name;
1704 /* Associated symbol name. */
1705 const char *sym_name;
1706 /* Associated symbol. */
1707 struct elf_link_hash_entry *sym;
1708 } elf_linker_section_t;
1710 /* Linked list of allocated pointer entries. This hangs off of the
1711 symbol lists, and provides allows us to return different pointers,
1712 based on different addend's. */
1714 typedef struct elf_linker_section_pointers
1716 /* next allocated pointer for this symbol */
1717 struct elf_linker_section_pointers *next;
1718 /* offset of pointer from beginning of section */
1722 /* which linker section this is */
1723 elf_linker_section_t *lsect;
1724 } elf_linker_section_pointers_t;
1726 struct ppc_elf_obj_tdata
1728 struct elf_obj_tdata elf;
1730 /* A mapping from local symbols to offsets into the various linker
1731 sections added. This is index by the symbol index. */
1732 elf_linker_section_pointers_t **linker_section_pointers;
1734 /* Flags used to auto-detect plt type. */
1735 unsigned int makes_plt_call : 1;
1736 unsigned int has_rel16 : 1;
1739 #define ppc_elf_tdata(bfd) \
1740 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1742 #define elf_local_ptr_offsets(bfd) \
1743 (ppc_elf_tdata (bfd)->linker_section_pointers)
1745 #define is_ppc_elf(bfd) \
1746 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1747 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1749 /* Override the generic function because we store some extras. */
1752 ppc_elf_mkobject (bfd *abfd)
1754 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1758 /* Fix bad default arch selected for a 32 bit input bfd when the
1759 default is 64 bit. */
1762 ppc_elf_object_p (bfd *abfd)
1764 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1766 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1768 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1770 /* Relies on arch after 64 bit default being 32 bit default. */
1771 abfd->arch_info = abfd->arch_info->next;
1772 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1778 /* Function to set whether a module needs the -mrelocatable bit set. */
1781 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1783 BFD_ASSERT (!elf_flags_init (abfd)
1784 || elf_elfheader (abfd)->e_flags == flags);
1786 elf_elfheader (abfd)->e_flags = flags;
1787 elf_flags_init (abfd) = TRUE;
1791 /* Support for core dump NOTE sections. */
1794 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1799 switch (note->descsz)
1804 case 268: /* Linux/PPC. */
1806 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1809 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1818 /* Make a ".reg/999" section. */
1819 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1820 size, note->descpos + offset);
1824 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1826 switch (note->descsz)
1831 case 128: /* Linux/PPC elf_prpsinfo. */
1832 elf_tdata (abfd)->core_program
1833 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1834 elf_tdata (abfd)->core_command
1835 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1838 /* Note that for some reason, a spurious space is tacked
1839 onto the end of the args in some (at least one anyway)
1840 implementations, so strip it off if it exists. */
1843 char *command = elf_tdata (abfd)->core_command;
1844 int n = strlen (command);
1846 if (0 < n && command[n - 1] == ' ')
1847 command[n - 1] = '\0';
1854 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1866 va_start (ap, note_type);
1867 memset (data, 0, 32);
1868 strncpy (data + 32, va_arg (ap, const char *), 16);
1869 strncpy (data + 48, va_arg (ap, const char *), 80);
1871 return elfcore_write_note (abfd, buf, bufsiz,
1872 "CORE", note_type, data, sizeof (data));
1883 va_start (ap, note_type);
1884 memset (data, 0, 72);
1885 pid = va_arg (ap, long);
1886 bfd_put_32 (abfd, pid, data + 24);
1887 cursig = va_arg (ap, int);
1888 bfd_put_16 (abfd, cursig, data + 12);
1889 greg = va_arg (ap, const void *);
1890 memcpy (data + 72, greg, 192);
1891 memset (data + 264, 0, 4);
1893 return elfcore_write_note (abfd, buf, bufsiz,
1894 "CORE", note_type, data, sizeof (data));
1899 /* Return address for Ith PLT stub in section PLT, for relocation REL
1900 or (bfd_vma) -1 if it should not be included. */
1903 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1904 const asection *plt ATTRIBUTE_UNUSED,
1907 return rel->address;
1910 /* Handle a PowerPC specific section when reading an object file. This
1911 is called when bfd_section_from_shdr finds a section with an unknown
1915 ppc_elf_section_from_shdr (bfd *abfd,
1916 Elf_Internal_Shdr *hdr,
1923 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1926 newsect = hdr->bfd_section;
1927 flags = bfd_get_section_flags (abfd, newsect);
1928 if (hdr->sh_flags & SHF_EXCLUDE)
1929 flags |= SEC_EXCLUDE;
1931 if (hdr->sh_type == SHT_ORDERED)
1932 flags |= SEC_SORT_ENTRIES;
1934 bfd_set_section_flags (abfd, newsect, flags);
1938 /* Set up any other section flags and such that may be necessary. */
1941 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1942 Elf_Internal_Shdr *shdr,
1945 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1946 shdr->sh_flags |= SHF_EXCLUDE;
1948 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1949 shdr->sh_type = SHT_ORDERED;
1954 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1955 need to bump up the number of section headers. */
1958 ppc_elf_additional_program_headers (bfd *abfd,
1959 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1964 s = bfd_get_section_by_name (abfd, ".sbss2");
1965 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1968 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1969 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1975 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1976 .PPC.EMB.sbss0 a normal section, and not a bss section so
1977 that the linker doesn't crater when trying to make more than
1980 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1982 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1983 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1984 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1985 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1986 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1987 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1988 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1989 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1990 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1991 { NULL, 0, 0, 0, 0 }
1994 /* This is what we want for new plt/got. */
1995 static struct bfd_elf_special_section ppc_alt_plt =
1996 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
1998 static const struct bfd_elf_special_section *
1999 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2001 const struct bfd_elf_special_section *ssect;
2003 /* See if this is one of the special sections. */
2004 if (sec->name == NULL)
2007 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2011 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2012 ssect = &ppc_alt_plt;
2016 return _bfd_elf_get_sec_type_attr (abfd, sec);
2019 /* Very simple linked list structure for recording apuinfo values. */
2020 typedef struct apuinfo_list
2022 struct apuinfo_list *next;
2023 unsigned long value;
2027 static apuinfo_list *head;
2031 apuinfo_list_init (void)
2037 apuinfo_list_add (unsigned long value)
2039 apuinfo_list *entry = head;
2041 while (entry != NULL)
2043 if (entry->value == value)
2045 entry = entry->next;
2048 entry = bfd_malloc (sizeof (* entry));
2052 entry->value = value;
2058 apuinfo_list_length (void)
2060 apuinfo_list *entry;
2061 unsigned long count;
2063 for (entry = head, count = 0;
2065 entry = entry->next)
2071 static inline unsigned long
2072 apuinfo_list_element (unsigned long number)
2074 apuinfo_list * entry;
2078 entry = entry->next)
2081 return entry ? entry->value : 0;
2085 apuinfo_list_finish (void)
2087 apuinfo_list *entry;
2089 for (entry = head; entry;)
2091 apuinfo_list *next = entry->next;
2099 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2100 #define APUINFO_LABEL "APUinfo"
2102 /* Scan the input BFDs and create a linked list of
2103 the APUinfo values that will need to be emitted. */
2106 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2111 unsigned num_input_sections;
2112 bfd_size_type output_section_size;
2114 unsigned num_entries;
2115 unsigned long offset;
2116 unsigned long length;
2117 const char *error_message = NULL;
2119 if (link_info == NULL)
2122 /* Scan the input bfds, looking for apuinfo sections. */
2123 num_input_sections = 0;
2124 output_section_size = 0;
2126 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2128 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2131 ++ num_input_sections;
2132 output_section_size += asec->size;
2136 /* We need at least one input sections
2137 in order to make merging worthwhile. */
2138 if (num_input_sections < 1)
2141 /* Just make sure that the output section exists as well. */
2142 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2146 /* Allocate a buffer for the contents of the input sections. */
2147 buffer = bfd_malloc (output_section_size);
2152 apuinfo_list_init ();
2154 /* Read in the input sections contents. */
2155 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2157 unsigned long datum;
2160 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2164 length = asec->size;
2167 error_message = _("corrupt or empty %s section in %B");
2171 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2172 || (bfd_bread (buffer + offset, length, ibfd) != length))
2174 error_message = _("unable to read in %s section from %B");
2178 /* Process the contents of the section. */
2179 ptr = buffer + offset;
2180 error_message = _("corrupt %s section in %B");
2182 /* Verify the contents of the header. Note - we have to
2183 extract the values this way in order to allow for a
2184 host whose endian-ness is different from the target. */
2185 datum = bfd_get_32 (ibfd, ptr);
2186 if (datum != sizeof APUINFO_LABEL)
2189 datum = bfd_get_32 (ibfd, ptr + 8);
2193 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2196 /* Get the number of bytes used for apuinfo entries. */
2197 datum = bfd_get_32 (ibfd, ptr + 4);
2198 if (datum + 20 != length)
2201 /* Make sure that we do not run off the end of the section. */
2202 if (offset + length > output_section_size)
2205 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2206 for (i = 0; i < datum; i += 4)
2207 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2209 /* Update the offset. */
2213 error_message = NULL;
2215 /* Compute the size of the output section. */
2216 num_entries = apuinfo_list_length ();
2217 output_section_size = 20 + num_entries * 4;
2219 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2221 if (! bfd_set_section_size (abfd, asec, output_section_size))
2223 error_message = _("warning: unable to set size of %s section in %B");
2229 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2232 /* Prevent the output section from accumulating the input sections'
2233 contents. We have already stored this in our linked list structure. */
2236 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2237 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2239 bfd_byte *contents ATTRIBUTE_UNUSED)
2241 return (apuinfo_list_length ()
2242 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2245 /* Finally we can generate the output section. */
2248 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2253 unsigned num_entries;
2254 bfd_size_type length;
2256 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2260 if (apuinfo_list_length () == 0)
2263 length = asec->size;
2267 buffer = bfd_malloc (length);
2270 (*_bfd_error_handler)
2271 (_("failed to allocate space for new APUinfo section."));
2275 /* Create the apuinfo header. */
2276 num_entries = apuinfo_list_length ();
2277 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2278 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2279 bfd_put_32 (abfd, 0x2, buffer + 8);
2280 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2283 for (i = 0; i < num_entries; i++)
2285 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2289 if (length != asec->size)
2290 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2292 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2293 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2297 apuinfo_list_finish ();
2301 is_pic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2306 if (!bfd_get_section_contents (abfd, glink, buf, off, 16))
2309 insn = bfd_get_32 (abfd, buf);
2310 if ((insn & 0xffff0000) == LWZ_11_30
2311 && bfd_get_32 (abfd, buf + 4) == MTCTR_11
2312 && bfd_get_32 (abfd, buf + 8) == BCTR)
2315 if ((insn & 0xffff0000) == ADDIS_11_30
2316 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2317 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2318 && bfd_get_32 (abfd, buf + 12) == BCTR)
2324 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2326 bfd_vma vma = *(bfd_vma *) ptr;
2327 return ((section->flags & SEC_ALLOC) != 0
2328 && section->vma <= vma
2329 && vma < section->vma + section->size);
2333 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2334 long dynsymcount, asymbol **dynsyms,
2337 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2338 asection *plt, *relplt, *dynamic, *glink;
2339 bfd_vma glink_vma = 0;
2340 bfd_vma resolv_vma = 0;
2351 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2354 if (dynsymcount <= 0)
2357 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2361 plt = bfd_get_section_by_name (abfd, ".plt");
2365 /* Call common code to handle old-style executable PLTs. */
2366 if (elf_section_flags (plt) & SHF_EXECINSTR)
2367 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2368 dynsymcount, dynsyms, ret);
2370 /* If this object was prelinked, the prelinker stored the address
2371 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2372 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2373 if (dynamic != NULL)
2375 bfd_byte *dynbuf, *extdyn, *extdynend;
2377 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2379 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2382 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2383 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2386 extdynend = extdyn + dynamic->size;
2387 for (; extdyn < extdynend; extdyn += extdynsize)
2389 Elf_Internal_Dyn dyn;
2390 (*swap_dyn_in) (abfd, extdyn, &dyn);
2392 if (dyn.d_tag == DT_NULL)
2395 if (dyn.d_tag == DT_PPC_GOT)
2397 unsigned int g_o_t = dyn.d_un.d_val;
2398 asection *got = bfd_get_section_by_name (abfd, ".got");
2400 && bfd_get_section_contents (abfd, got, buf,
2401 g_o_t - got->vma + 4, 4))
2402 glink_vma = bfd_get_32 (abfd, buf);
2409 /* Otherwise we read the first plt entry. */
2412 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2413 glink_vma = bfd_get_32 (abfd, buf);
2419 /* The .glink section usually does not survive the final
2420 link; search for the section (usually .text) where the
2421 glink stubs now reside. */
2422 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2426 /* Determine glink PLT resolver by reading the relative branch
2427 from the first glink stub. */
2428 if (bfd_get_section_contents (abfd, glink, buf,
2429 glink_vma - glink->vma, 4))
2431 unsigned int insn = bfd_get_32 (abfd, buf);
2433 /* The first glink stub may either branch to the resolver ... */
2435 if ((insn & ~0x3fffffc) == 0)
2436 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2438 /* ... or fall through a bunch of NOPs. */
2439 else if ((insn ^ B ^ NOP) == 0)
2441 bfd_get_section_contents (abfd, glink, buf,
2442 glink_vma - glink->vma + i, 4);
2444 if (bfd_get_32 (abfd, buf) != NOP)
2446 resolv_vma = glink_vma + i;
2451 count = relplt->size / sizeof (Elf32_External_Rela);
2452 stub_vma = glink_vma - (bfd_vma) count * 16;
2453 /* If the stubs are those for -shared/-pie then we might have
2454 multiple stubs for each plt entry. If that is the case then
2455 there is no way to associate stubs with their plt entries short
2456 of figuring out the GOT pointer value used in the stub. */
2457 if (!bfd_get_section_contents (abfd, glink, buf,
2458 stub_vma - glink->vma, 4)
2459 || ((bfd_get_32 (abfd, buf) & 0xffff0000) != LIS_11
2460 && is_pic_glink_stub (abfd, glink, stub_vma - glink->vma - 16)))
2463 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2464 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2467 size = count * sizeof (asymbol);
2468 p = relplt->relocation;
2469 for (i = 0; i < count; i++, p++)
2470 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2472 size += sizeof (asymbol) + sizeof ("__glink");
2475 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2477 s = *ret = bfd_malloc (size);
2481 names = (char *) (s + count + 1 + (resolv_vma != 0));
2482 p = relplt->relocation;
2483 for (i = 0; i < count; i++, p++)
2487 *s = **p->sym_ptr_ptr;
2488 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2489 we are defining a symbol, ensure one of them is set. */
2490 if ((s->flags & BSF_LOCAL) == 0)
2491 s->flags |= BSF_GLOBAL;
2492 s->flags |= BSF_SYNTHETIC;
2494 s->value = stub_vma - glink->vma;
2497 len = strlen ((*p->sym_ptr_ptr)->name);
2498 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2500 memcpy (names, "@plt", sizeof ("@plt"));
2501 names += sizeof ("@plt");
2506 /* Add a symbol at the start of the glink branch table. */
2507 memset (s, 0, sizeof *s);
2509 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2511 s->value = glink_vma - glink->vma;
2513 memcpy (names, "__glink", sizeof ("__glink"));
2514 names += sizeof ("__glink");
2520 /* Add a symbol for the glink PLT resolver. */
2521 memset (s, 0, sizeof *s);
2523 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2525 s->value = resolv_vma - glink->vma;
2527 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2528 names += sizeof ("__glink_PLTresolve");
2536 /* The following functions are specific to the ELF linker, while
2537 functions above are used generally. They appear in this file more
2538 or less in the order in which they are called. eg.
2539 ppc_elf_check_relocs is called early in the link process,
2540 ppc_elf_finish_dynamic_sections is one of the last functions
2543 /* The PPC linker needs to keep track of the number of relocs that it
2544 decides to copy as dynamic relocs in check_relocs for each symbol.
2545 This is so that it can later discard them if they are found to be
2546 unnecessary. We store the information in a field extending the
2547 regular ELF linker hash table. */
2549 struct ppc_elf_dyn_relocs
2551 struct ppc_elf_dyn_relocs *next;
2553 /* The input section of the reloc. */
2556 /* Total number of relocs copied for the input section. */
2557 bfd_size_type count;
2559 /* Number of pc-relative relocs copied for the input section. */
2560 bfd_size_type pc_count;
2563 /* Track PLT entries needed for a given symbol. We might need more
2564 than one glink entry per symbol. */
2567 struct plt_entry *next;
2569 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2570 This field stores the offset into .got2 used to initialise the
2571 GOT pointer reg. It will always be at least 32768 (and for
2572 current gcc this is the only offset used). */
2575 /* The .got2 section. */
2578 /* PLT refcount or offset. */
2581 bfd_signed_vma refcount;
2585 /* .glink stub offset. */
2586 bfd_vma glink_offset;
2589 /* Of those relocs that might be copied as dynamic relocs, this function
2590 selects those that must be copied when linking a shared library,
2591 even when the symbol is local. */
2594 must_be_dyn_reloc (struct bfd_link_info *info,
2595 enum elf_ppc_reloc_type r_type)
2604 case R_PPC_REL14_BRTAKEN:
2605 case R_PPC_REL14_BRNTAKEN:
2611 case R_PPC_TPREL16_LO:
2612 case R_PPC_TPREL16_HI:
2613 case R_PPC_TPREL16_HA:
2614 return !info->executable;
2618 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2619 copying dynamic variables from a shared lib into an app's dynbss
2620 section, and instead use a dynamic relocation to point into the
2622 #define ELIMINATE_COPY_RELOCS 1
2624 /* PPC ELF linker hash entry. */
2626 struct ppc_elf_link_hash_entry
2628 struct elf_link_hash_entry elf;
2630 /* If this symbol is used in the linker created sections, the processor
2631 specific backend uses this field to map the field into the offset
2632 from the beginning of the section. */
2633 elf_linker_section_pointers_t *linker_section_pointer;
2635 /* Track dynamic relocs copied for this symbol. */
2636 struct ppc_elf_dyn_relocs *dyn_relocs;
2638 /* Contexts in which symbol is used in the GOT (or TOC).
2639 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2640 corresponding relocs are encountered during check_relocs.
2641 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2642 indicate the corresponding GOT entry type is not needed. */
2643 #define TLS_GD 1 /* GD reloc. */
2644 #define TLS_LD 2 /* LD reloc. */
2645 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2646 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2647 #define TLS_TLS 16 /* Any TLS reloc. */
2648 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2651 /* Nonzero if we have seen a small data relocation referring to this
2653 unsigned char has_sda_refs;
2656 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2658 /* PPC ELF linker hash table. */
2660 struct ppc_elf_link_hash_table
2662 struct elf_link_hash_table elf;
2664 /* Short-cuts to get to dynamic linker sections. */
2674 elf_linker_section_t sdata[2];
2677 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2680 /* The .got.plt section (VxWorks only)*/
2683 /* Shortcut to __tls_get_addr. */
2684 struct elf_link_hash_entry *tls_get_addr;
2686 /* The bfd that forced an old-style PLT. */
2689 /* TLS local dynamic got entry handling. */
2691 bfd_signed_vma refcount;
2695 /* Offset of PltResolve function in glink. */
2696 bfd_vma glink_pltresolve;
2698 /* Size of reserved GOT entries. */
2699 unsigned int got_header_size;
2700 /* Non-zero if allocating the header left a gap. */
2701 unsigned int got_gap;
2703 /* The type of PLT we have chosen to use. */
2704 enum ppc_elf_plt_type plt_type;
2706 /* Set if we should emit symbols for stubs. */
2707 unsigned int emit_stub_syms:1;
2709 /* True if the target system is VxWorks. */
2710 unsigned int is_vxworks:1;
2712 /* The size of PLT entries. */
2714 /* The distance between adjacent PLT slots. */
2716 /* The size of the first PLT entry. */
2717 int plt_initial_entry_size;
2719 /* Small local sym to section mapping cache. */
2720 struct sym_sec_cache sym_sec;
2723 /* Get the PPC ELF linker hash table from a link_info structure. */
2725 #define ppc_elf_hash_table(p) \
2726 ((struct ppc_elf_link_hash_table *) (p)->hash)
2728 /* Create an entry in a PPC ELF linker hash table. */
2730 static struct bfd_hash_entry *
2731 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2732 struct bfd_hash_table *table,
2735 /* Allocate the structure if it has not already been allocated by a
2739 entry = bfd_hash_allocate (table,
2740 sizeof (struct ppc_elf_link_hash_entry));
2745 /* Call the allocation method of the superclass. */
2746 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2749 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2750 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2751 ppc_elf_hash_entry (entry)->tls_mask = 0;
2757 /* Create a PPC ELF linker hash table. */
2759 static struct bfd_link_hash_table *
2760 ppc_elf_link_hash_table_create (bfd *abfd)
2762 struct ppc_elf_link_hash_table *ret;
2764 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2768 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2769 ppc_elf_link_hash_newfunc,
2770 sizeof (struct ppc_elf_link_hash_entry)))
2776 ret->elf.init_plt_refcount.refcount = 0;
2777 ret->elf.init_plt_refcount.glist = NULL;
2778 ret->elf.init_plt_offset.offset = 0;
2779 ret->elf.init_plt_offset.glist = NULL;
2781 ret->sdata[0].name = ".sdata";
2782 ret->sdata[0].sym_name = "_SDA_BASE_";
2783 ret->sdata[0].bss_name = ".sbss";
2785 ret->sdata[1].name = ".sdata2";
2786 ret->sdata[1].sym_name = "_SDA2_BASE_";
2787 ret->sdata[1].bss_name = ".sbss2";
2789 ret->plt_entry_size = 12;
2790 ret->plt_slot_size = 8;
2791 ret->plt_initial_entry_size = 72;
2793 return &ret->elf.root;
2796 /* Create .got and the related sections. */
2799 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2801 struct ppc_elf_link_hash_table *htab;
2805 if (!_bfd_elf_create_got_section (abfd, info))
2808 htab = ppc_elf_hash_table (info);
2809 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2813 if (htab->is_vxworks)
2815 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2821 /* The powerpc .got has a blrl instruction in it. Mark it
2823 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2824 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2825 if (!bfd_set_section_flags (abfd, s, flags))
2829 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2830 | SEC_LINKER_CREATED | SEC_READONLY);
2831 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2833 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2839 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2840 to output sections (just like _bfd_elf_create_dynamic_sections has
2841 to create .dynbss and .rela.bss). */
2844 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2846 struct ppc_elf_link_hash_table *htab;
2850 htab = ppc_elf_hash_table (info);
2852 if (htab->got == NULL
2853 && !ppc_elf_create_got (abfd, info))
2856 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2859 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2860 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2862 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2865 || !bfd_set_section_alignment (abfd, s, 4))
2868 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2869 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2870 SEC_ALLOC | SEC_LINKER_CREATED);
2877 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2878 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2881 || ! bfd_set_section_alignment (abfd, s, 2))
2885 if (htab->is_vxworks
2886 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2889 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2890 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2894 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2895 if (htab->plt_type == PLT_VXWORKS)
2896 /* The VxWorks PLT is a loaded section with contents. */
2897 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2898 return bfd_set_section_flags (abfd, s, flags);
2901 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2904 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2905 struct elf_link_hash_entry *dir,
2906 struct elf_link_hash_entry *ind)
2908 struct ppc_elf_link_hash_entry *edir, *eind;
2910 edir = (struct ppc_elf_link_hash_entry *) dir;
2911 eind = (struct ppc_elf_link_hash_entry *) ind;
2913 if (eind->dyn_relocs != NULL)
2915 if (edir->dyn_relocs != NULL)
2917 struct ppc_elf_dyn_relocs **pp;
2918 struct ppc_elf_dyn_relocs *p;
2920 /* Add reloc counts against the indirect sym to the direct sym
2921 list. Merge any entries against the same section. */
2922 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2924 struct ppc_elf_dyn_relocs *q;
2926 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2927 if (q->sec == p->sec)
2929 q->pc_count += p->pc_count;
2930 q->count += p->count;
2937 *pp = edir->dyn_relocs;
2940 edir->dyn_relocs = eind->dyn_relocs;
2941 eind->dyn_relocs = NULL;
2944 edir->tls_mask |= eind->tls_mask;
2945 edir->has_sda_refs |= eind->has_sda_refs;
2947 /* If called to transfer flags for a weakdef during processing
2948 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2949 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2950 if (!(ELIMINATE_COPY_RELOCS
2951 && eind->elf.root.type != bfd_link_hash_indirect
2952 && edir->elf.dynamic_adjusted))
2953 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2955 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2956 edir->elf.ref_regular |= eind->elf.ref_regular;
2957 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2958 edir->elf.needs_plt |= eind->elf.needs_plt;
2959 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
2961 /* If we were called to copy over info for a weak sym, that's all. */
2962 if (eind->elf.root.type != bfd_link_hash_indirect)
2965 /* Copy over the GOT refcount entries that we may have already seen to
2966 the symbol which just became indirect. */
2967 edir->elf.got.refcount += eind->elf.got.refcount;
2968 eind->elf.got.refcount = 0;
2970 /* And plt entries. */
2971 if (eind->elf.plt.plist != NULL)
2973 if (edir->elf.plt.plist != NULL)
2975 struct plt_entry **entp;
2976 struct plt_entry *ent;
2978 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2980 struct plt_entry *dent;
2982 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2983 if (dent->sec == ent->sec && dent->addend == ent->addend)
2985 dent->plt.refcount += ent->plt.refcount;
2992 *entp = edir->elf.plt.plist;
2995 edir->elf.plt.plist = eind->elf.plt.plist;
2996 eind->elf.plt.plist = NULL;
2999 if (eind->elf.dynindx != -1)
3001 if (edir->elf.dynindx != -1)
3002 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3003 edir->elf.dynstr_index);
3004 edir->elf.dynindx = eind->elf.dynindx;
3005 edir->elf.dynstr_index = eind->elf.dynstr_index;
3006 eind->elf.dynindx = -1;
3007 eind->elf.dynstr_index = 0;
3011 /* Hook called by the linker routine which adds symbols from an object
3012 file. We use it to put .comm items in .sbss, and not .bss. */
3015 ppc_elf_add_symbol_hook (bfd *abfd,
3016 struct bfd_link_info *info,
3017 Elf_Internal_Sym *sym,
3018 const char **namep ATTRIBUTE_UNUSED,
3019 flagword *flagsp ATTRIBUTE_UNUSED,
3023 if (sym->st_shndx == SHN_COMMON
3024 && !info->relocatable
3025 && is_ppc_elf (info->output_bfd)
3026 && sym->st_size <= elf_gp_size (abfd))
3028 /* Common symbols less than or equal to -G nn bytes are automatically
3030 struct ppc_elf_link_hash_table *htab;
3032 htab = ppc_elf_hash_table (info);
3033 if (htab->sbss == NULL)
3035 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3037 if (!htab->elf.dynobj)
3038 htab->elf.dynobj = abfd;
3040 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3043 if (htab->sbss == NULL)
3048 *valp = sym->st_size;
3055 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3056 elf_linker_section_t *lsect)
3058 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3060 if (lsect->sym == NULL)
3062 if (lsect->sym->root.type == bfd_link_hash_new)
3063 lsect->sym->non_elf = 0;
3064 lsect->sym->ref_regular = 1;
3068 /* Create a special linker section. */
3071 ppc_elf_create_linker_section (bfd *abfd,
3072 struct bfd_link_info *info,
3074 elf_linker_section_t *lsect)
3076 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3079 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3080 | SEC_LINKER_CREATED);
3082 /* Record the first bfd that needs the special sections. */
3083 if (!htab->elf.dynobj)
3084 htab->elf.dynobj = abfd;
3086 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3090 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3094 return create_sdata_sym (htab, lsect);
3097 /* Find a linker generated pointer with a given addend and type. */
3099 static elf_linker_section_pointers_t *
3100 elf_find_pointer_linker_section
3101 (elf_linker_section_pointers_t *linker_pointers,
3103 elf_linker_section_t *lsect)
3105 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3106 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3107 return linker_pointers;
3112 /* Allocate a pointer to live in a linker created section. */
3115 elf_create_pointer_linker_section (bfd *abfd,
3116 elf_linker_section_t *lsect,
3117 struct elf_link_hash_entry *h,
3118 const Elf_Internal_Rela *rel)
3120 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3121 elf_linker_section_pointers_t *linker_section_ptr;
3122 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3125 BFD_ASSERT (lsect != NULL);
3127 /* Is this a global symbol? */
3130 struct ppc_elf_link_hash_entry *eh;
3132 /* Has this symbol already been allocated? If so, our work is done. */
3133 eh = (struct ppc_elf_link_hash_entry *) h;
3134 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3139 ptr_linker_section_ptr = &eh->linker_section_pointer;
3143 BFD_ASSERT (is_ppc_elf (abfd));
3145 /* Allocation of a pointer to a local symbol. */
3146 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3148 /* Allocate a table to hold the local symbols if first time. */
3151 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3154 amt *= sizeof (elf_linker_section_pointers_t *);
3155 ptr = bfd_zalloc (abfd, amt);
3160 elf_local_ptr_offsets (abfd) = ptr;
3163 /* Has this symbol already been allocated? If so, our work is done. */
3164 if (elf_find_pointer_linker_section (ptr[r_symndx],
3169 ptr_linker_section_ptr = &ptr[r_symndx];
3172 /* Allocate space for a pointer in the linker section, and allocate
3173 a new pointer record from internal memory. */
3174 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3175 amt = sizeof (elf_linker_section_pointers_t);
3176 linker_section_ptr = bfd_alloc (abfd, amt);
3178 if (!linker_section_ptr)
3181 linker_section_ptr->next = *ptr_linker_section_ptr;
3182 linker_section_ptr->addend = rel->r_addend;
3183 linker_section_ptr->lsect = lsect;
3184 *ptr_linker_section_ptr = linker_section_ptr;
3186 linker_section_ptr->offset = lsect->section->size;
3187 lsect->section->size += 4;
3191 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3192 lsect->name, (long) linker_section_ptr->offset,
3193 (long) lsect->section->size);
3200 update_local_sym_info (bfd *abfd,
3201 Elf_Internal_Shdr *symtab_hdr,
3202 unsigned long r_symndx,
3205 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3206 char *local_got_tls_masks;
3208 if (local_got_refcounts == NULL)
3210 bfd_size_type size = symtab_hdr->sh_info;
3212 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
3213 local_got_refcounts = bfd_zalloc (abfd, size);
3214 if (local_got_refcounts == NULL)
3216 elf_local_got_refcounts (abfd) = local_got_refcounts;
3219 local_got_refcounts[r_symndx] += 1;
3220 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
3221 local_got_tls_masks[r_symndx] |= tls_type;
3226 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
3227 asection *sec, bfd_vma addend)
3229 struct plt_entry *ent;
3233 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3234 if (ent->sec == sec && ent->addend == addend)
3238 bfd_size_type amt = sizeof (*ent);
3239 ent = bfd_alloc (abfd, amt);
3242 ent->next = h->plt.plist;
3244 ent->addend = addend;
3245 ent->plt.refcount = 0;
3248 ent->plt.refcount += 1;
3252 static struct plt_entry *
3253 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
3255 struct plt_entry *ent;
3259 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3260 if (ent->sec == sec && ent->addend == addend)
3266 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3268 (*_bfd_error_handler)
3269 (_("%B: relocation %s cannot be used when making a shared object"),
3271 ppc_elf_howto_table[r_type]->name);
3272 bfd_set_error (bfd_error_bad_value);
3275 /* Look through the relocs for a section during the first phase, and
3276 allocate space in the global offset table or procedure linkage
3280 ppc_elf_check_relocs (bfd *abfd,
3281 struct bfd_link_info *info,
3283 const Elf_Internal_Rela *relocs)
3285 struct ppc_elf_link_hash_table *htab;
3286 Elf_Internal_Shdr *symtab_hdr;
3287 struct elf_link_hash_entry **sym_hashes;
3288 const Elf_Internal_Rela *rel;
3289 const Elf_Internal_Rela *rel_end;
3290 asection *got2, *sreloc;
3292 if (info->relocatable)
3295 /* Don't do anything special with non-loaded, non-alloced sections.
3296 In particular, any relocs in such sections should not affect GOT
3297 and PLT reference counting (ie. we don't allow them to create GOT
3298 or PLT entries), there's no possibility or desire to optimize TLS
3299 relocs, and there's not much point in propagating relocs to shared
3300 libs that the dynamic linker won't relocate. */
3301 if ((sec->flags & SEC_ALLOC) == 0)
3305 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3309 BFD_ASSERT (is_ppc_elf (abfd));
3311 /* Initialize howto table if not already done. */
3312 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3313 ppc_elf_howto_init ();
3315 htab = ppc_elf_hash_table (info);
3316 symtab_hdr = &elf_symtab_hdr (abfd);
3317 sym_hashes = elf_sym_hashes (abfd);
3318 got2 = bfd_get_section_by_name (abfd, ".got2");
3321 rel_end = relocs + sec->reloc_count;
3322 for (rel = relocs; rel < rel_end; rel++)
3324 unsigned long r_symndx;
3325 enum elf_ppc_reloc_type r_type;
3326 struct elf_link_hash_entry *h;
3329 r_symndx = ELF32_R_SYM (rel->r_info);
3330 if (r_symndx < symtab_hdr->sh_info)
3334 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3335 while (h->root.type == bfd_link_hash_indirect
3336 || h->root.type == bfd_link_hash_warning)
3337 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3340 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3341 This shows up in particular in an R_PPC_ADDR32 in the eabi
3344 && htab->got == NULL
3345 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3347 if (htab->elf.dynobj == NULL)
3348 htab->elf.dynobj = abfd;
3349 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3351 BFD_ASSERT (h == htab->elf.hgot);
3354 r_type = ELF32_R_TYPE (rel->r_info);
3357 case R_PPC_GOT_TLSLD16:
3358 case R_PPC_GOT_TLSLD16_LO:
3359 case R_PPC_GOT_TLSLD16_HI:
3360 case R_PPC_GOT_TLSLD16_HA:
3361 tls_type = TLS_TLS | TLS_LD;
3364 case R_PPC_GOT_TLSGD16:
3365 case R_PPC_GOT_TLSGD16_LO:
3366 case R_PPC_GOT_TLSGD16_HI:
3367 case R_PPC_GOT_TLSGD16_HA:
3368 tls_type = TLS_TLS | TLS_GD;
3371 case R_PPC_GOT_TPREL16:
3372 case R_PPC_GOT_TPREL16_LO:
3373 case R_PPC_GOT_TPREL16_HI:
3374 case R_PPC_GOT_TPREL16_HA:
3375 if (!info->executable)
3376 info->flags |= DF_STATIC_TLS;
3377 tls_type = TLS_TLS | TLS_TPREL;
3380 case R_PPC_GOT_DTPREL16:
3381 case R_PPC_GOT_DTPREL16_LO:
3382 case R_PPC_GOT_DTPREL16_HI:
3383 case R_PPC_GOT_DTPREL16_HA:
3384 tls_type = TLS_TLS | TLS_DTPREL;
3386 sec->has_tls_reloc = 1;
3389 /* GOT16 relocations */
3391 case R_PPC_GOT16_LO:
3392 case R_PPC_GOT16_HI:
3393 case R_PPC_GOT16_HA:
3394 /* This symbol requires a global offset table entry. */
3395 if (htab->got == NULL)
3397 if (htab->elf.dynobj == NULL)
3398 htab->elf.dynobj = abfd;
3399 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3404 h->got.refcount += 1;
3405 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3408 /* This is a global offset table entry for a local symbol. */
3409 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3413 /* Indirect .sdata relocation. */
3414 case R_PPC_EMB_SDAI16:
3417 bad_shared_reloc (abfd, r_type);
3420 if (htab->sdata[0].section == NULL
3421 && !ppc_elf_create_linker_section (abfd, info, 0,
3424 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3429 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3430 h->non_got_ref = TRUE;
3434 /* Indirect .sdata2 relocation. */
3435 case R_PPC_EMB_SDA2I16:
3438 bad_shared_reloc (abfd, r_type);
3441 if (htab->sdata[1].section == NULL
3442 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3445 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3450 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3451 h->non_got_ref = TRUE;
3455 case R_PPC_SDAREL16:
3458 bad_shared_reloc (abfd, r_type);
3461 if (htab->sdata[0].sym == NULL
3462 && !create_sdata_sym (htab, &htab->sdata[0]))
3466 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3467 h->non_got_ref = TRUE;
3471 case R_PPC_EMB_SDA2REL:
3474 bad_shared_reloc (abfd, r_type);
3477 if (htab->sdata[1].sym == NULL
3478 && !create_sdata_sym (htab, &htab->sdata[1]))
3482 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3483 h->non_got_ref = TRUE;
3487 case R_PPC_EMB_SDA21:
3488 case R_PPC_EMB_RELSDA:
3491 bad_shared_reloc (abfd, r_type);
3494 if (htab->sdata[0].sym == NULL
3495 && !create_sdata_sym (htab, &htab->sdata[0]))
3497 if (htab->sdata[1].sym == NULL
3498 && !create_sdata_sym (htab, &htab->sdata[1]))
3502 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3503 h->non_got_ref = TRUE;
3507 case R_PPC_EMB_NADDR32:
3508 case R_PPC_EMB_NADDR16:
3509 case R_PPC_EMB_NADDR16_LO:
3510 case R_PPC_EMB_NADDR16_HI:
3511 case R_PPC_EMB_NADDR16_HA:
3514 bad_shared_reloc (abfd, r_type);
3518 h->non_got_ref = TRUE;
3522 case R_PPC_PLTREL24:
3523 case R_PPC_PLTREL32:
3524 case R_PPC_PLT16_LO:
3525 case R_PPC_PLT16_HI:
3526 case R_PPC_PLT16_HA:
3528 fprintf (stderr, "Reloc requires a PLT entry\n");
3530 /* This symbol requires a procedure linkage table entry. We
3531 actually build the entry in finish_dynamic_symbol,
3532 because this might be a case of linking PIC code without
3533 linking in any dynamic objects, in which case we don't
3534 need to generate a procedure linkage table after all. */
3538 /* It does not make sense to have a procedure linkage
3539 table entry for a local symbol. */
3540 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3544 (long) rel->r_offset,
3545 ppc_elf_howto_table[r_type]->name);
3546 bfd_set_error (bfd_error_bad_value);
3553 if (r_type == R_PPC_PLTREL24)
3555 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3556 addend = rel->r_addend;
3559 if (!update_plt_info (abfd, h, got2, addend))
3564 /* The following relocations don't need to propagate the
3565 relocation if linking a shared object since they are
3566 section relative. */
3568 case R_PPC_SECTOFF_LO:
3569 case R_PPC_SECTOFF_HI:
3570 case R_PPC_SECTOFF_HA:
3571 case R_PPC_DTPREL16:
3572 case R_PPC_DTPREL16_LO:
3573 case R_PPC_DTPREL16_HI:
3574 case R_PPC_DTPREL16_HA:
3579 case R_PPC_REL16_LO:
3580 case R_PPC_REL16_HI:
3581 case R_PPC_REL16_HA:
3582 ppc_elf_tdata (abfd)->has_rel16 = 1;
3585 /* These are just markers. */
3587 case R_PPC_EMB_MRKREF:
3592 /* These should only appear in dynamic objects. */
3594 case R_PPC_GLOB_DAT:
3595 case R_PPC_JMP_SLOT:
3596 case R_PPC_RELATIVE:
3599 /* These aren't handled yet. We'll report an error later. */
3601 case R_PPC_EMB_RELSEC16:
3602 case R_PPC_EMB_RELST_LO:
3603 case R_PPC_EMB_RELST_HI:
3604 case R_PPC_EMB_RELST_HA:
3605 case R_PPC_EMB_BIT_FLD:
3608 /* This refers only to functions defined in the shared library. */
3609 case R_PPC_LOCAL24PC:
3610 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3612 htab->plt_type = PLT_OLD;
3613 htab->old_bfd = abfd;
3617 /* This relocation describes the C++ object vtable hierarchy.
3618 Reconstruct it for later use during GC. */
3619 case R_PPC_GNU_VTINHERIT:
3620 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3624 /* This relocation describes which C++ vtable entries are actually
3625 used. Record for later use during GC. */
3626 case R_PPC_GNU_VTENTRY:
3627 BFD_ASSERT (h != NULL);
3629 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3633 /* We shouldn't really be seeing these. */
3636 case R_PPC_TPREL16_LO:
3637 case R_PPC_TPREL16_HI:
3638 case R_PPC_TPREL16_HA:
3639 if (!info->executable)
3640 info->flags |= DF_STATIC_TLS;
3644 case R_PPC_DTPMOD32:
3645 case R_PPC_DTPREL32:
3651 && (sec->flags & SEC_CODE) != 0
3652 && (info->shared || info->pie)
3653 && htab->plt_type == PLT_UNSET)
3655 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3656 the start of a function, which assembles to a REL32
3657 reference to .got2. If we detect one of these, then
3658 force the old PLT layout because the linker cannot
3659 reliably deduce the GOT pointer value needed for
3663 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3667 htab->plt_type = PLT_OLD;
3668 htab->old_bfd = abfd;
3671 if (h == NULL || h == htab->elf.hgot)
3677 case R_PPC_ADDR16_LO:
3678 case R_PPC_ADDR16_HI:
3679 case R_PPC_ADDR16_HA:
3682 if (h != NULL && !info->shared)
3684 /* We may need a plt entry if the symbol turns out to be
3685 a function defined in a dynamic object. */
3686 if (!update_plt_info (abfd, h, NULL, 0))
3689 /* We may need a copy reloc too. */
3691 h->pointer_equality_needed = 1;
3697 case R_PPC_REL14_BRTAKEN:
3698 case R_PPC_REL14_BRNTAKEN:
3701 if (h == htab->elf.hgot)
3703 if (htab->plt_type == PLT_UNSET)
3705 htab->plt_type = PLT_OLD;
3706 htab->old_bfd = abfd;
3714 case R_PPC_ADDR14_BRTAKEN:
3715 case R_PPC_ADDR14_BRNTAKEN:
3716 if (h != NULL && !info->shared)
3718 /* We may need a plt entry if the symbol turns out to be
3719 a function defined in a dynamic object. */
3720 if (!update_plt_info (abfd, h, NULL, 0))
3726 /* If we are creating a shared library, and this is a reloc
3727 against a global symbol, or a non PC relative reloc
3728 against a local symbol, then we need to copy the reloc
3729 into the shared library. However, if we are linking with
3730 -Bsymbolic, we do not need to copy a reloc against a
3731 global symbol which is defined in an object we are
3732 including in the link (i.e., DEF_REGULAR is set). At
3733 this point we have not seen all the input files, so it is
3734 possible that DEF_REGULAR is not set now but will be set
3735 later (it is never cleared). In case of a weak definition,
3736 DEF_REGULAR may be cleared later by a strong definition in
3737 a shared library. We account for that possibility below by
3738 storing information in the dyn_relocs field of the hash
3739 table entry. A similar situation occurs when creating
3740 shared libraries and symbol visibility changes render the
3743 If on the other hand, we are creating an executable, we
3744 may need to keep relocations for symbols satisfied by a
3745 dynamic library if we manage to avoid copy relocs for the
3748 && (must_be_dyn_reloc (info, r_type)
3750 && (! info->symbolic
3751 || h->root.type == bfd_link_hash_defweak
3752 || !h->def_regular))))
3753 || (ELIMINATE_COPY_RELOCS
3756 && (h->root.type == bfd_link_hash_defweak
3757 || !h->def_regular)))
3759 struct ppc_elf_dyn_relocs *p;
3760 struct ppc_elf_dyn_relocs **head;
3764 "ppc_elf_check_relocs needs to "
3765 "create relocation for %s\n",
3766 (h && h->root.root.string
3767 ? h->root.root.string : "<unknown>"));
3771 if (htab->elf.dynobj == NULL)
3772 htab->elf.dynobj = abfd;
3774 sreloc = _bfd_elf_make_dynamic_reloc_section
3775 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3781 /* If this is a global symbol, we count the number of
3782 relocations we need for this symbol. */
3785 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3789 /* Track dynamic relocs needed for local syms too.
3790 We really need local syms available to do this
3796 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3801 vpp = &elf_section_data (s)->local_dynrel;
3802 head = (struct ppc_elf_dyn_relocs **) vpp;
3806 if (p == NULL || p->sec != sec)
3808 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3819 if (!must_be_dyn_reloc (info, r_type))
3831 /* Merge object attributes from IBFD into OBFD. Raise an error if
3832 there are conflicting attributes. */
3834 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
3836 obj_attribute *in_attr, *in_attrs;
3837 obj_attribute *out_attr, *out_attrs;
3839 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3841 /* This is the first object. Copy the attributes. */
3842 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3844 /* Use the Tag_null value to indicate the attributes have been
3846 elf_known_obj_attributes_proc (obfd)[0].i = 1;
3851 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3852 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3854 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3855 non-conflicting ones. */
3856 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3857 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3858 if (in_attr->i != out_attr->i)
3861 if (out_attr->i == 0)
3862 out_attr->i = in_attr->i;
3863 else if (in_attr->i == 0)
3865 else if (out_attr->i == 1 && in_attr->i == 2)
3867 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3868 else if (out_attr->i == 1 && in_attr->i == 3)
3870 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3872 else if (out_attr->i == 3 && in_attr->i == 1)
3874 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3876 else if (out_attr->i == 3 && in_attr->i == 2)
3878 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3880 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
3882 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3883 else if (in_attr->i > 3)
3885 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
3889 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
3893 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3894 merge non-conflicting ones. */
3895 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3896 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3897 if (in_attr->i != out_attr->i)
3899 const char *in_abi = NULL, *out_abi = NULL;
3903 case 1: in_abi = "generic"; break;
3904 case 2: in_abi = "AltiVec"; break;
3905 case 3: in_abi = "SPE"; break;
3908 switch (out_attr->i)
3910 case 1: out_abi = "generic"; break;
3911 case 2: out_abi = "AltiVec"; break;
3912 case 3: out_abi = "SPE"; break;
3916 if (out_attr->i == 0)
3917 out_attr->i = in_attr->i;
3918 else if (in_attr->i == 0)
3920 /* For now, allow generic to transition to AltiVec or SPE
3921 without a warning. If GCC marked files with their stack
3922 alignment and used don't-care markings for files which are
3923 not affected by the vector ABI, we could warn about this
3925 else if (out_attr->i == 1)
3926 out_attr->i = in_attr->i;
3927 else if (in_attr->i == 1)
3929 else if (in_abi == NULL)
3931 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
3933 else if (out_abi == NULL)
3935 (_("Warning: %B uses unknown vector ABI %d"), obfd,
3939 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3940 ibfd, obfd, in_abi, out_abi);
3943 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
3944 and merge non-conflicting ones. */
3945 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
3946 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
3947 if (in_attr->i != out_attr->i)
3950 if (out_attr->i == 0)
3951 out_attr->i = in_attr->i;
3952 else if (in_attr->i == 0)
3954 else if (out_attr->i == 1 && in_attr->i == 2)
3956 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
3957 else if (out_attr->i == 2 && in_attr->i == 1)
3959 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
3960 else if (in_attr->i > 2)
3962 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
3966 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
3970 /* Merge Tag_compatibility attributes and any common GNU ones. */
3971 _bfd_elf_merge_object_attributes (ibfd, obfd);
3976 /* Merge backend specific data from an object file to the output
3977 object file when linking. */
3980 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3986 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
3989 /* Check if we have the same endianess. */
3990 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3993 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
3996 new_flags = elf_elfheader (ibfd)->e_flags;
3997 old_flags = elf_elfheader (obfd)->e_flags;
3998 if (!elf_flags_init (obfd))
4000 /* First call, no flags set. */
4001 elf_flags_init (obfd) = TRUE;
4002 elf_elfheader (obfd)->e_flags = new_flags;
4005 /* Compatible flags are ok. */
4006 else if (new_flags == old_flags)
4009 /* Incompatible flags. */
4012 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4013 to be linked with either. */
4015 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4016 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4019 (*_bfd_error_handler)
4020 (_("%B: compiled with -mrelocatable and linked with "
4021 "modules compiled normally"), ibfd);
4023 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4024 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4027 (*_bfd_error_handler)
4028 (_("%B: compiled normally and linked with "
4029 "modules compiled with -mrelocatable"), ibfd);
4032 /* The output is -mrelocatable-lib iff both the input files are. */
4033 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4034 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4036 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4037 but each input file is either -mrelocatable or -mrelocatable-lib. */
4038 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4039 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4040 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4041 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4043 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4044 any module uses it. */
4045 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4047 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4048 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4050 /* Warn about any other mismatches. */
4051 if (new_flags != old_flags)
4054 (*_bfd_error_handler)
4055 (_("%B: uses different e_flags (0x%lx) fields "
4056 "than previous modules (0x%lx)"),
4057 ibfd, (long) new_flags, (long) old_flags);
4062 bfd_set_error (bfd_error_bad_value);
4070 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4071 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4073 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4074 struct bfd_link_info *info,
4075 enum ppc_elf_plt_type plt_style,
4078 struct ppc_elf_link_hash_table *htab;
4081 htab = ppc_elf_hash_table (info);
4083 if (htab->plt_type == PLT_UNSET)
4085 if (plt_style == PLT_OLD)
4086 htab->plt_type = PLT_OLD;
4090 enum ppc_elf_plt_type plt_type = plt_style;
4092 /* Look through the reloc flags left by ppc_elf_check_relocs.
4093 Use the old style bss plt if a file makes plt calls
4094 without using the new relocs, and if ld isn't given
4095 --secure-plt and we never see REL16 relocs. */
4096 if (plt_type == PLT_UNSET)
4098 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4099 if (is_ppc_elf (ibfd))
4101 if (ppc_elf_tdata (ibfd)->has_rel16)
4103 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4106 htab->old_bfd = ibfd;
4110 htab->plt_type = plt_type;
4113 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4114 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4116 htab->emit_stub_syms = emit_stub_syms;
4118 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4120 if (htab->plt_type == PLT_NEW)
4122 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4123 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4125 /* The new PLT is a loaded section. */
4126 if (htab->plt != NULL
4127 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4130 /* The new GOT is not executable. */
4131 if (htab->got != NULL
4132 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4137 /* Stop an unused .glink section from affecting .text alignment. */
4138 if (htab->glink != NULL
4139 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4142 return htab->plt_type == PLT_NEW;
4145 /* Return the section that should be marked against GC for a given
4149 ppc_elf_gc_mark_hook (asection *sec,
4150 struct bfd_link_info *info,
4151 Elf_Internal_Rela *rel,
4152 struct elf_link_hash_entry *h,
4153 Elf_Internal_Sym *sym)
4156 switch (ELF32_R_TYPE (rel->r_info))
4158 case R_PPC_GNU_VTINHERIT:
4159 case R_PPC_GNU_VTENTRY:
4163 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4166 /* Update the got, plt and dynamic reloc reference counts for the
4167 section being removed. */
4170 ppc_elf_gc_sweep_hook (bfd *abfd,
4171 struct bfd_link_info *info,
4173 const Elf_Internal_Rela *relocs)
4175 struct ppc_elf_link_hash_table *htab;
4176 Elf_Internal_Shdr *symtab_hdr;
4177 struct elf_link_hash_entry **sym_hashes;
4178 bfd_signed_vma *local_got_refcounts;
4179 const Elf_Internal_Rela *rel, *relend;
4182 if (info->relocatable)
4185 if ((sec->flags & SEC_ALLOC) == 0)
4188 elf_section_data (sec)->local_dynrel = NULL;
4190 htab = ppc_elf_hash_table (info);
4191 symtab_hdr = &elf_symtab_hdr (abfd);
4192 sym_hashes = elf_sym_hashes (abfd);
4193 local_got_refcounts = elf_local_got_refcounts (abfd);
4194 got2 = bfd_get_section_by_name (abfd, ".got2");
4196 relend = relocs + sec->reloc_count;
4197 for (rel = relocs; rel < relend; rel++)
4199 unsigned long r_symndx;
4200 enum elf_ppc_reloc_type r_type;
4201 struct elf_link_hash_entry *h = NULL;
4203 r_symndx = ELF32_R_SYM (rel->r_info);
4204 if (r_symndx >= symtab_hdr->sh_info)
4206 struct ppc_elf_dyn_relocs **pp, *p;
4207 struct ppc_elf_link_hash_entry *eh;
4209 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4210 while (h->root.type == bfd_link_hash_indirect
4211 || h->root.type == bfd_link_hash_warning)
4212 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4213 eh = (struct ppc_elf_link_hash_entry *) h;
4215 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4218 /* Everything must go for SEC. */
4224 r_type = ELF32_R_TYPE (rel->r_info);
4227 case R_PPC_GOT_TLSLD16:
4228 case R_PPC_GOT_TLSLD16_LO:
4229 case R_PPC_GOT_TLSLD16_HI:
4230 case R_PPC_GOT_TLSLD16_HA:
4231 case R_PPC_GOT_TLSGD16:
4232 case R_PPC_GOT_TLSGD16_LO:
4233 case R_PPC_GOT_TLSGD16_HI:
4234 case R_PPC_GOT_TLSGD16_HA:
4235 case R_PPC_GOT_TPREL16:
4236 case R_PPC_GOT_TPREL16_LO:
4237 case R_PPC_GOT_TPREL16_HI:
4238 case R_PPC_GOT_TPREL16_HA:
4239 case R_PPC_GOT_DTPREL16:
4240 case R_PPC_GOT_DTPREL16_LO:
4241 case R_PPC_GOT_DTPREL16_HI:
4242 case R_PPC_GOT_DTPREL16_HA:
4244 case R_PPC_GOT16_LO:
4245 case R_PPC_GOT16_HI:
4246 case R_PPC_GOT16_HA:
4249 if (h->got.refcount > 0)
4252 else if (local_got_refcounts != NULL)
4254 if (local_got_refcounts[r_symndx] > 0)
4255 local_got_refcounts[r_symndx]--;
4261 case R_PPC_REL14_BRTAKEN:
4262 case R_PPC_REL14_BRNTAKEN:
4264 if (h == NULL || h == htab->elf.hgot)
4271 case R_PPC_ADDR16_LO:
4272 case R_PPC_ADDR16_HI:
4273 case R_PPC_ADDR16_HA:
4275 case R_PPC_ADDR14_BRTAKEN:
4276 case R_PPC_ADDR14_BRNTAKEN:
4283 case R_PPC_PLTREL24:
4284 case R_PPC_PLTREL32:
4285 case R_PPC_PLT16_LO:
4286 case R_PPC_PLT16_HI:
4287 case R_PPC_PLT16_HA:
4290 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4291 struct plt_entry *ent = find_plt_ent (h, got2, addend);
4292 if (ent->plt.refcount > 0)
4293 ent->plt.refcount -= 1;
4304 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
4307 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4309 struct ppc_elf_link_hash_table *htab;
4311 htab = ppc_elf_hash_table (info);
4312 if (htab->plt_type == PLT_NEW
4313 && htab->plt != NULL
4314 && htab->plt->output_section != NULL)
4316 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4317 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4320 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4321 FALSE, FALSE, TRUE);
4322 return _bfd_elf_tls_setup (obfd, info);
4325 /* Run through all the TLS relocs looking for optimization
4329 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4330 struct bfd_link_info *info)
4334 struct ppc_elf_link_hash_table *htab;
4337 if (info->relocatable || !info->executable)
4340 htab = ppc_elf_hash_table (info);
4341 /* Make two passes through the relocs. First time check that tls
4342 relocs involved in setting up a tls_get_addr call are indeed
4343 followed by such a call. If they are not, exclude them from
4344 the optimizations done on the second pass. */
4345 for (pass = 0; pass < 2; ++pass)
4346 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4348 Elf_Internal_Sym *locsyms = NULL;
4349 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4351 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4352 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4354 Elf_Internal_Rela *relstart, *rel, *relend;
4356 /* Read the relocations. */
4357 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4359 if (relstart == NULL)
4362 relend = relstart + sec->reloc_count;
4363 for (rel = relstart; rel < relend; rel++)
4365 enum elf_ppc_reloc_type r_type;
4366 unsigned long r_symndx;
4367 struct elf_link_hash_entry *h = NULL;
4369 char tls_set, tls_clear;
4370 bfd_boolean is_local;
4371 int expecting_tls_get_addr;
4372 bfd_signed_vma *got_count;
4374 r_symndx = ELF32_R_SYM (rel->r_info);
4375 if (r_symndx >= symtab_hdr->sh_info)
4377 struct elf_link_hash_entry **sym_hashes;
4379 sym_hashes = elf_sym_hashes (ibfd);
4380 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4381 while (h->root.type == bfd_link_hash_indirect
4382 || h->root.type == bfd_link_hash_warning)
4383 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4386 expecting_tls_get_addr = 0;
4392 r_type = ELF32_R_TYPE (rel->r_info);
4395 case R_PPC_GOT_TLSLD16:
4396 case R_PPC_GOT_TLSLD16_LO:
4397 expecting_tls_get_addr = 1;
4400 case R_PPC_GOT_TLSLD16_HI:
4401 case R_PPC_GOT_TLSLD16_HA:
4402 /* These relocs should never be against a symbol
4403 defined in a shared lib. Leave them alone if
4404 that turns out to be the case. */
4413 case R_PPC_GOT_TLSGD16:
4414 case R_PPC_GOT_TLSGD16_LO:
4415 expecting_tls_get_addr = 1;
4418 case R_PPC_GOT_TLSGD16_HI:
4419 case R_PPC_GOT_TLSGD16_HA:
4425 tls_set = TLS_TLS | TLS_TPRELGD;
4429 case R_PPC_GOT_TPREL16:
4430 case R_PPC_GOT_TPREL16_LO:
4431 case R_PPC_GOT_TPREL16_HI:
4432 case R_PPC_GOT_TPREL16_HA:
4437 tls_clear = TLS_TPREL;
4449 if (!expecting_tls_get_addr)
4452 if (rel + 1 < relend)
4454 enum elf_ppc_reloc_type r_type2;
4455 unsigned long r_symndx2;
4456 struct elf_link_hash_entry *h2;
4458 /* The next instruction should be a call to
4459 __tls_get_addr. Peek at the reloc to be sure. */
4460 r_type2 = ELF32_R_TYPE (rel[1].r_info);
4461 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4462 if (r_symndx2 >= symtab_hdr->sh_info
4463 && (r_type2 == R_PPC_REL14
4464 || r_type2 == R_PPC_REL14_BRTAKEN
4465 || r_type2 == R_PPC_REL14_BRNTAKEN
4466 || r_type2 == R_PPC_REL24
4467 || r_type2 == R_PPC_PLTREL24))
4469 struct elf_link_hash_entry **sym_hashes;
4471 sym_hashes = elf_sym_hashes (ibfd);
4472 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4473 while (h2->root.type == bfd_link_hash_indirect
4474 || h2->root.type == bfd_link_hash_warning)
4475 h2 = ((struct elf_link_hash_entry *)
4477 if (h2 == htab->tls_get_addr)
4482 /* Uh oh, we didn't find the expected call. We
4483 could just mark this symbol to exclude it
4484 from tls optimization but it's safer to skip
4485 the entire section. */
4486 sec->has_tls_reloc = 0;
4492 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4493 got_count = &h->got.refcount;
4497 Elf_Internal_Sym *sym;
4498 bfd_signed_vma *lgot_refs;
4501 if (locsyms == NULL)
4503 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4504 if (locsyms == NULL)
4505 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4506 symtab_hdr->sh_info,
4507 0, NULL, NULL, NULL);
4508 if (locsyms == NULL)
4510 if (elf_section_data (sec)->relocs != relstart)
4515 sym = locsyms + r_symndx;
4516 lgot_refs = elf_local_got_refcounts (ibfd);
4517 if (lgot_refs == NULL)
4519 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4520 tls_mask = &lgot_masks[r_symndx];
4521 got_count = &lgot_refs[r_symndx];
4526 /* We managed to get rid of a got entry. */
4531 if (expecting_tls_get_addr)
4533 struct plt_entry *ent;
4535 ent = find_plt_ent (htab->tls_get_addr, NULL, 0);
4536 if (ent != NULL && ent->plt.refcount > 0)
4537 ent->plt.refcount -= 1;
4540 *tls_mask |= tls_set;
4541 *tls_mask &= ~tls_clear;
4544 if (elf_section_data (sec)->relocs != relstart)
4549 && (symtab_hdr->contents != (unsigned char *) locsyms))
4551 if (!info->keep_memory)
4554 symtab_hdr->contents = (unsigned char *) locsyms;
4560 /* Return true if we have dynamic relocs that apply to read-only sections. */
4563 readonly_dynrelocs (struct elf_link_hash_entry *h)
4565 struct ppc_elf_dyn_relocs *p;
4567 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4569 asection *s = p->sec->output_section;
4572 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4573 == (SEC_READONLY | SEC_ALLOC)))
4579 /* Adjust a symbol defined by a dynamic object and referenced by a
4580 regular object. The current definition is in some section of the
4581 dynamic object, but we're not including those sections. We have to
4582 change the definition to something the rest of the link can
4586 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4587 struct elf_link_hash_entry *h)
4589 struct ppc_elf_link_hash_table *htab;
4593 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4594 h->root.root.string);
4597 /* Make sure we know what is going on here. */
4598 htab = ppc_elf_hash_table (info);
4599 BFD_ASSERT (htab->elf.dynobj != NULL
4601 || h->u.weakdef != NULL
4604 && !h->def_regular)));
4606 /* Deal with function syms. */
4607 if (h->type == STT_FUNC
4610 /* Clear procedure linkage table information for any symbol that
4611 won't need a .plt entry. */
4612 struct plt_entry *ent;
4613 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4614 if (ent->plt.refcount > 0)
4617 || SYMBOL_CALLS_LOCAL (info, h)
4618 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4619 && h->root.type == bfd_link_hash_undefweak))
4621 /* A PLT entry is not required/allowed when:
4623 1. We are not using ld.so; because then the PLT entry
4624 can't be set up, so we can't use one. In this case,
4625 ppc_elf_adjust_dynamic_symbol won't even be called.
4627 2. GC has rendered the entry unused.
4629 3. We know for certain that a call to this symbol
4630 will go to this object, or will remain undefined. */
4631 h->plt.plist = NULL;
4636 /* After adjust_dynamic_symbol, non_got_ref set means that
4637 dyn_relocs for this symbol should be discarded.
4638 If we get here we know we are making a PLT entry for this
4639 symbol, and in an executable we'd normally resolve
4640 relocations against this symbol to the PLT entry. Allow
4641 dynamic relocs if the reference is weak, and the dynamic
4642 relocs will not cause text relocation. */
4643 if (!h->ref_regular_nonweak
4645 && !htab->is_vxworks
4646 && !ppc_elf_hash_entry (h)->has_sda_refs
4647 && !readonly_dynrelocs (h))
4653 h->plt.plist = NULL;
4655 /* If this is a weak symbol, and there is a real definition, the
4656 processor independent code will have arranged for us to see the
4657 real definition first, and we can just use the same value. */
4658 if (h->u.weakdef != NULL)
4660 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4661 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4662 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4663 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4664 if (ELIMINATE_COPY_RELOCS)
4665 h->non_got_ref = h->u.weakdef->non_got_ref;
4669 /* This is a reference to a symbol defined by a dynamic object which
4670 is not a function. */
4672 /* If we are creating a shared library, we must presume that the
4673 only references to the symbol are via the global offset table.
4674 For such cases we need not do anything here; the relocations will
4675 be handled correctly by relocate_section. */
4679 /* If there are no references to this symbol that do not use the
4680 GOT, we don't need to generate a copy reloc. */
4681 if (!h->non_got_ref)
4684 /* If we didn't find any dynamic relocs in read-only sections, then
4685 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4686 We can't do this if there are any small data relocations. This
4687 doesn't work on VxWorks, where we can not have dynamic
4688 relocations (other than copy and jump slot relocations) in an
4690 if (ELIMINATE_COPY_RELOCS
4691 && !ppc_elf_hash_entry (h)->has_sda_refs
4692 && !htab->is_vxworks
4694 && !readonly_dynrelocs (h))
4702 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4703 h->root.root.string);
4707 /* We must allocate the symbol in our .dynbss section, which will
4708 become part of the .bss section of the executable. There will be
4709 an entry for this symbol in the .dynsym section. The dynamic
4710 object will contain position independent code, so all references
4711 from the dynamic object to this symbol will go through the global
4712 offset table. The dynamic linker will use the .dynsym entry to
4713 determine the address it must put in the global offset table, so
4714 both the dynamic object and the regular object will refer to the
4715 same memory location for the variable.
4717 Of course, if the symbol is referenced using SDAREL relocs, we
4718 must instead allocate it in .sbss. */
4720 if (ppc_elf_hash_entry (h)->has_sda_refs)
4724 BFD_ASSERT (s != NULL);
4726 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4727 copy the initial value out of the dynamic object and into the
4728 runtime process image. We need to remember the offset into the
4729 .rela.bss section we are going to use. */
4730 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4734 if (ppc_elf_hash_entry (h)->has_sda_refs)
4735 srel = htab->relsbss;
4737 srel = htab->relbss;
4738 BFD_ASSERT (srel != NULL);
4739 srel->size += sizeof (Elf32_External_Rela);
4743 return _bfd_elf_adjust_dynamic_copy (h, s);
4746 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4747 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4748 specifying the addend on the plt relocation. For -fpic code, the sym
4749 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4750 xxxxxxxx.got2.plt_pic32.<callee>. */
4753 add_stub_sym (struct plt_entry *ent,
4754 struct elf_link_hash_entry *h,
4755 struct bfd_link_info *info)
4757 struct elf_link_hash_entry *sh;
4758 size_t len1, len2, len3;
4761 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4763 if (info->shared || info->pie)
4764 stub = ".plt_pic32.";
4766 stub = ".plt_call32.";
4768 len1 = strlen (h->root.root.string);
4769 len2 = strlen (stub);
4772 len3 = strlen (ent->sec->name);
4773 name = bfd_malloc (len1 + len2 + len3 + 9);
4776 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4778 memcpy (name + 8, ent->sec->name, len3);
4779 memcpy (name + 8 + len3, stub, len2);
4780 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4781 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4784 if (sh->root.type == bfd_link_hash_new)
4786 sh->root.type = bfd_link_hash_defined;
4787 sh->root.u.def.section = htab->glink;
4788 sh->root.u.def.value = ent->glink_offset;
4789 sh->ref_regular = 1;
4790 sh->def_regular = 1;
4791 sh->ref_regular_nonweak = 1;
4792 sh->forced_local = 1;
4798 /* Allocate NEED contiguous space in .got, and return the offset.
4799 Handles allocation of the got header when crossing 32k. */
4802 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4805 unsigned int max_before_header;
4807 if (htab->plt_type == PLT_VXWORKS)
4809 where = htab->got->size;
4810 htab->got->size += need;
4814 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4815 if (need <= htab->got_gap)
4817 where = max_before_header - htab->got_gap;
4818 htab->got_gap -= need;
4822 if (htab->got->size + need > max_before_header
4823 && htab->got->size <= max_before_header)
4825 htab->got_gap = max_before_header - htab->got->size;
4826 htab->got->size = max_before_header + htab->got_header_size;
4828 where = htab->got->size;
4829 htab->got->size += need;
4835 /* Allocate space in associated reloc sections for dynamic relocs. */
4838 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4840 struct bfd_link_info *info = inf;
4841 struct ppc_elf_link_hash_entry *eh;
4842 struct ppc_elf_link_hash_table *htab;
4843 struct ppc_elf_dyn_relocs *p;
4845 if (h->root.type == bfd_link_hash_indirect)
4848 if (h->root.type == bfd_link_hash_warning)
4849 /* When warning symbols are created, they **replace** the "real"
4850 entry in the hash table, thus we never get to see the real
4851 symbol in a hash traversal. So look at it now. */
4852 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4854 htab = ppc_elf_hash_table (info);
4855 if (htab->elf.dynamic_sections_created)
4857 struct plt_entry *ent;
4858 bfd_boolean doneone = FALSE;
4859 bfd_vma plt_offset = 0, glink_offset = 0;
4861 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4862 if (ent->plt.refcount > 0)
4864 /* Make sure this symbol is output as a dynamic symbol. */
4865 if (h->dynindx == -1
4866 && !h->forced_local)
4868 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4873 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4875 asection *s = htab->plt;
4877 if (htab->plt_type == PLT_NEW)
4881 plt_offset = s->size;
4884 ent->plt.offset = plt_offset;
4887 if (!doneone || info->shared || info->pie)
4889 glink_offset = s->size;
4890 s->size += GLINK_ENTRY_SIZE;
4897 h->root.u.def.section = s;
4898 h->root.u.def.value = glink_offset;
4900 ent->glink_offset = glink_offset;
4902 if (htab->emit_stub_syms
4903 && !add_stub_sym (ent, h, info))
4910 /* If this is the first .plt entry, make room
4911 for the special first entry. */
4913 s->size += htab->plt_initial_entry_size;
4915 /* The PowerPC PLT is actually composed of two
4916 parts, the first part is 2 words (for a load
4917 and a jump), and then there is a remaining
4918 word available at the end. */
4919 plt_offset = (htab->plt_initial_entry_size
4920 + (htab->plt_slot_size
4922 - htab->plt_initial_entry_size)
4923 / htab->plt_entry_size)));
4925 /* If this symbol is not defined in a regular
4926 file, and we are not generating a shared
4927 library, then set the symbol to this location
4928 in the .plt. This is required to make
4929 function pointers compare as equal between
4930 the normal executable and the shared library. */
4935 h->root.u.def.section = s;
4936 h->root.u.def.value = plt_offset;
4939 /* Make room for this entry. */
4940 s->size += htab->plt_entry_size;
4941 /* After the 8192nd entry, room for two entries
4943 if (htab->plt_type == PLT_OLD
4944 && (s->size - htab->plt_initial_entry_size)
4945 / htab->plt_entry_size
4946 > PLT_NUM_SINGLE_ENTRIES)
4947 s->size += htab->plt_entry_size;
4949 ent->plt.offset = plt_offset;
4952 /* We also need to make an entry in the .rela.plt section. */
4955 htab->relplt->size += sizeof (Elf32_External_Rela);
4957 if (htab->plt_type == PLT_VXWORKS)
4959 /* Allocate space for the unloaded relocations. */
4963 == (bfd_vma) htab->plt_initial_entry_size)
4965 htab->srelplt2->size
4966 += sizeof (Elf32_External_Rela)
4967 * VXWORKS_PLTRESOLVE_RELOCS;
4970 htab->srelplt2->size
4971 += sizeof (Elf32_External_Rela)
4972 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4975 /* Every PLT entry has an associated GOT entry in
4977 htab->sgotplt->size += 4;
4983 ent->plt.offset = (bfd_vma) -1;
4986 ent->plt.offset = (bfd_vma) -1;
4990 h->plt.plist = NULL;
4996 h->plt.plist = NULL;
5000 eh = (struct ppc_elf_link_hash_entry *) h;
5001 if (eh->elf.got.refcount > 0)
5006 /* Make sure this symbol is output as a dynamic symbol. */
5007 if (eh->elf.dynindx == -1
5008 && !eh->elf.forced_local
5009 && htab->elf.dynamic_sections_created)
5011 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5016 if ((eh->tls_mask & TLS_TLS) != 0)
5018 if ((eh->tls_mask & TLS_LD) != 0)
5020 if (!eh->elf.def_dynamic)
5021 /* We'll just use htab->tlsld_got.offset. This should
5022 always be the case. It's a little odd if we have
5023 a local dynamic reloc against a non-local symbol. */
5024 htab->tlsld_got.refcount += 1;
5028 if ((eh->tls_mask & TLS_GD) != 0)
5030 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5032 if ((eh->tls_mask & TLS_DTPREL) != 0)
5038 eh->elf.got.offset = (bfd_vma) -1;
5041 eh->elf.got.offset = allocate_got (htab, need);
5042 dyn = htab->elf.dynamic_sections_created;
5044 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5045 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5046 || eh->elf.root.type != bfd_link_hash_undefweak))
5048 /* All the entries we allocated need relocs.
5049 Except LD only needs one. */
5050 if ((eh->tls_mask & TLS_LD) != 0
5051 && eh->elf.def_dynamic)
5053 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
5058 eh->elf.got.offset = (bfd_vma) -1;
5060 if (eh->dyn_relocs == NULL
5061 || !htab->elf.dynamic_sections_created)
5064 /* In the shared -Bsymbolic case, discard space allocated for
5065 dynamic pc-relative relocs against symbols which turn out to be
5066 defined in regular objects. For the normal shared case, discard
5067 space for relocs that have become local due to symbol visibility
5072 /* Relocs that use pc_count are those that appear on a call insn,
5073 or certain REL relocs (see must_be_dyn_reloc) that can be
5074 generated via assembly. We want calls to protected symbols to
5075 resolve directly to the function rather than going via the plt.
5076 If people want function pointer comparisons to work as expected
5077 then they should avoid writing weird assembly. */
5078 if (SYMBOL_CALLS_LOCAL (info, h))
5080 struct ppc_elf_dyn_relocs **pp;
5082 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5084 p->count -= p->pc_count;
5093 if (htab->is_vxworks)
5095 struct ppc_elf_dyn_relocs **pp;
5097 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5099 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5106 /* Discard relocs on undefined symbols that must be local. */
5107 if (eh->dyn_relocs != NULL
5108 && h->root.type == bfd_link_hash_undefined
5109 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5110 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5111 eh->dyn_relocs = NULL;
5113 /* Also discard relocs on undefined weak syms with non-default
5115 if (eh->dyn_relocs != NULL
5116 && h->root.type == bfd_link_hash_undefweak)
5118 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5119 eh->dyn_relocs = NULL;
5121 /* Make sure undefined weak symbols are output as a dynamic
5123 else if (h->dynindx == -1
5124 && !h->forced_local)
5126 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5131 else if (ELIMINATE_COPY_RELOCS)
5133 /* For the non-shared case, discard space for relocs against
5134 symbols which turn out to need copy relocs or are not
5140 /* Make sure this symbol is output as a dynamic symbol.
5141 Undefined weak syms won't yet be marked as dynamic. */
5142 if (h->dynindx == -1
5143 && !h->forced_local)
5145 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5149 /* If that succeeded, we know we'll be keeping all the
5151 if (h->dynindx != -1)
5155 eh->dyn_relocs = NULL;
5160 /* Finally, allocate space. */
5161 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5163 asection *sreloc = elf_section_data (p->sec)->sreloc;
5164 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5170 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5171 read-only sections. */
5174 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5176 if (h->root.type == bfd_link_hash_indirect)
5179 if (h->root.type == bfd_link_hash_warning)
5180 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5182 if (readonly_dynrelocs (h))
5184 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5186 /* Not an error, just cut short the traversal. */
5192 /* Set the sizes of the dynamic sections. */
5195 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5196 struct bfd_link_info *info)
5198 struct ppc_elf_link_hash_table *htab;
5204 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5207 htab = ppc_elf_hash_table (info);
5208 BFD_ASSERT (htab->elf.dynobj != NULL);
5210 if (elf_hash_table (info)->dynamic_sections_created)
5212 /* Set the contents of the .interp section to the interpreter. */
5213 if (info->executable)
5215 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5216 BFD_ASSERT (s != NULL);
5217 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5218 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5222 if (htab->plt_type == PLT_OLD)
5223 htab->got_header_size = 16;
5224 else if (htab->plt_type == PLT_NEW)
5225 htab->got_header_size = 12;
5227 /* Set up .got offsets for local syms, and space for local dynamic
5229 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5231 bfd_signed_vma *local_got;
5232 bfd_signed_vma *end_local_got;
5234 bfd_size_type locsymcount;
5235 Elf_Internal_Shdr *symtab_hdr;
5237 if (!is_ppc_elf (ibfd))
5240 for (s = ibfd->sections; s != NULL; s = s->next)
5242 struct ppc_elf_dyn_relocs *p;
5244 for (p = ((struct ppc_elf_dyn_relocs *)
5245 elf_section_data (s)->local_dynrel);
5249 if (!bfd_is_abs_section (p->sec)
5250 && bfd_is_abs_section (p->sec->output_section))
5252 /* Input section has been discarded, either because
5253 it is a copy of a linkonce section or due to
5254 linker script /DISCARD/, so we'll be discarding
5257 else if (htab->is_vxworks
5258 && strcmp (p->sec->output_section->name,
5261 /* Relocations in vxworks .tls_vars sections are
5262 handled specially by the loader. */
5264 else if (p->count != 0)
5266 elf_section_data (p->sec)->sreloc->size
5267 += p->count * sizeof (Elf32_External_Rela);
5268 if ((p->sec->output_section->flags
5269 & (SEC_READONLY | SEC_ALLOC))
5270 == (SEC_READONLY | SEC_ALLOC))
5271 info->flags |= DF_TEXTREL;
5276 local_got = elf_local_got_refcounts (ibfd);
5280 symtab_hdr = &elf_symtab_hdr (ibfd);
5281 locsymcount = symtab_hdr->sh_info;
5282 end_local_got = local_got + locsymcount;
5283 lgot_masks = (char *) end_local_got;
5284 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5287 unsigned int need = 0;
5288 if ((*lgot_masks & TLS_TLS) != 0)
5290 if ((*lgot_masks & TLS_GD) != 0)
5292 if ((*lgot_masks & TLS_LD) != 0)
5293 htab->tlsld_got.refcount += 1;
5294 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5296 if ((*lgot_masks & TLS_DTPREL) != 0)
5302 *local_got = (bfd_vma) -1;
5305 *local_got = allocate_got (htab, need);
5307 htab->relgot->size += (need
5308 * (sizeof (Elf32_External_Rela) / 4));
5312 *local_got = (bfd_vma) -1;
5315 /* Allocate space for global sym dynamic relocs. */
5316 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5318 if (htab->tlsld_got.refcount > 0)
5320 htab->tlsld_got.offset = allocate_got (htab, 8);
5322 htab->relgot->size += sizeof (Elf32_External_Rela);
5325 htab->tlsld_got.offset = (bfd_vma) -1;
5327 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5329 unsigned int g_o_t = 32768;
5331 /* If we haven't allocated the header, do so now. When we get here,
5332 for old plt/got the got size will be 0 to 32764 (not allocated),
5333 or 32780 to 65536 (header allocated). For new plt/got, the
5334 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5335 if (htab->got->size <= 32768)
5337 g_o_t = htab->got->size;
5338 if (htab->plt_type == PLT_OLD)
5340 htab->got->size += htab->got_header_size;
5343 htab->elf.hgot->root.u.def.value = g_o_t;
5346 if (htab->glink != NULL && htab->glink->size != 0)
5348 htab->glink_pltresolve = htab->glink->size;
5349 /* Space for the branch table. */
5350 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5351 /* Pad out to align the start of PLTresolve. */
5352 htab->glink->size += -htab->glink->size & 15;
5353 htab->glink->size += GLINK_PLTRESOLVE;
5355 if (htab->emit_stub_syms)
5357 struct elf_link_hash_entry *sh;
5358 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5359 TRUE, FALSE, FALSE);
5362 if (sh->root.type == bfd_link_hash_new)
5364 sh->root.type = bfd_link_hash_defined;
5365 sh->root.u.def.section = htab->glink;
5366 sh->root.u.def.value = htab->glink_pltresolve;
5367 sh->ref_regular = 1;
5368 sh->def_regular = 1;
5369 sh->ref_regular_nonweak = 1;
5370 sh->forced_local = 1;
5373 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5374 TRUE, FALSE, FALSE);
5377 if (sh->root.type == bfd_link_hash_new)
5379 sh->root.type = bfd_link_hash_defined;
5380 sh->root.u.def.section = htab->glink;
5381 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5382 sh->ref_regular = 1;
5383 sh->def_regular = 1;
5384 sh->ref_regular_nonweak = 1;
5385 sh->forced_local = 1;
5391 /* We've now determined the sizes of the various dynamic sections.
5392 Allocate memory for them. */
5394 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5396 bfd_boolean strip_section = TRUE;
5398 if ((s->flags & SEC_LINKER_CREATED) == 0)
5404 || s == htab->sgotplt
5406 || s == htab->dynbss
5407 || s == htab->dynsbss)
5409 /* We'd like to strip these sections if they aren't needed, but if
5410 we've exported dynamic symbols from them we must leave them.
5411 It's too late to tell BFD to get rid of the symbols. */
5412 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
5413 strip_section = FALSE;
5414 /* Strip this section if we don't need it; see the
5417 else if (s == htab->sdata[0].section
5418 || s == htab->sdata[1].section)
5420 /* Strip these too. */
5422 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5426 /* Remember whether there are any relocation sections. */
5429 /* We use the reloc_count field as a counter if we need
5430 to copy relocs into the output file. */
5436 /* It's not one of our sections, so don't allocate space. */
5440 if (s->size == 0 && strip_section)
5442 /* If we don't need this section, strip it from the
5443 output file. This is mostly to handle .rela.bss and
5444 .rela.plt. We must create both sections in
5445 create_dynamic_sections, because they must be created
5446 before the linker maps input sections to output
5447 sections. The linker does that before
5448 adjust_dynamic_symbol is called, and it is that
5449 function which decides whether anything needs to go
5450 into these sections. */
5451 s->flags |= SEC_EXCLUDE;
5455 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5458 /* Allocate memory for the section contents. */
5459 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5460 if (s->contents == NULL)
5464 if (htab->elf.dynamic_sections_created)
5466 /* Add some entries to the .dynamic section. We fill in the
5467 values later, in ppc_elf_finish_dynamic_sections, but we
5468 must add the entries now so that we get the correct size for
5469 the .dynamic section. The DT_DEBUG entry is filled in by the
5470 dynamic linker and used by the debugger. */
5471 #define add_dynamic_entry(TAG, VAL) \
5472 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5474 if (info->executable)
5476 if (!add_dynamic_entry (DT_DEBUG, 0))
5480 if (htab->plt != NULL && htab->plt->size != 0)
5482 if (!add_dynamic_entry (DT_PLTGOT, 0)
5483 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5484 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5485 || !add_dynamic_entry (DT_JMPREL, 0))
5489 if (htab->glink != NULL && htab->glink->size != 0)
5491 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5497 if (!add_dynamic_entry (DT_RELA, 0)
5498 || !add_dynamic_entry (DT_RELASZ, 0)
5499 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5503 /* If any dynamic relocs apply to a read-only section, then we
5504 need a DT_TEXTREL entry. */
5505 if ((info->flags & DF_TEXTREL) == 0)
5506 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5509 if ((info->flags & DF_TEXTREL) != 0)
5511 if (!add_dynamic_entry (DT_TEXTREL, 0))
5514 if (htab->is_vxworks
5515 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5518 #undef add_dynamic_entry
5523 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5526 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5528 if (h->plt.plist != NULL
5530 && (!h->pointer_equality_needed
5531 || !h->ref_regular_nonweak))
5534 return _bfd_elf_hash_symbol (h);
5537 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5539 static const int shared_stub_entry[] =
5541 0x7c0802a6, /* mflr 0 */
5542 0x429f0005, /* bcl 20, 31, .Lxxx */
5543 0x7d6802a6, /* mflr 11 */
5544 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5545 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5546 0x7c0803a6, /* mtlr 0 */
5547 0x7d6903a6, /* mtctr 11 */
5548 0x4e800420, /* bctr */
5551 static const int stub_entry[] =
5553 0x3d600000, /* lis 11,xxx@ha */
5554 0x396b0000, /* addi 11,11,xxx@l */
5555 0x7d6903a6, /* mtctr 11 */
5556 0x4e800420, /* bctr */
5560 ppc_elf_relax_section (bfd *abfd,
5562 struct bfd_link_info *link_info,
5567 struct one_fixup *next;
5573 Elf_Internal_Shdr *symtab_hdr;
5574 bfd_byte *contents = NULL;
5575 Elf_Internal_Sym *isymbuf = NULL;
5576 Elf_Internal_Rela *internal_relocs = NULL;
5577 Elf_Internal_Rela *irel, *irelend;
5578 struct one_fixup *fixups = NULL;
5579 unsigned changes = 0;
5580 struct ppc_elf_link_hash_table *htab;
5581 bfd_size_type trampoff;
5586 /* Nothing to do if there are no relocations, and no need to do
5587 anything with non-alloc sections. */
5588 if ((isec->flags & SEC_ALLOC) == 0
5589 || (isec->flags & SEC_RELOC) == 0
5590 || isec->reloc_count == 0)
5593 trampoff = (isec->size + 3) & (bfd_vma) -4;
5594 /* Space for a branch around any trampolines. */
5597 symtab_hdr = &elf_symtab_hdr (abfd);
5599 /* Get a copy of the native relocations. */
5600 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5601 link_info->keep_memory);
5602 if (internal_relocs == NULL)
5605 htab = ppc_elf_hash_table (link_info);
5606 got2 = bfd_get_section_by_name (abfd, ".got2");
5608 irelend = internal_relocs + isec->reloc_count;
5609 for (irel = internal_relocs; irel < irelend; irel++)
5611 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5612 bfd_vma symaddr, reladdr, toff, roff;
5614 struct one_fixup *f;
5615 size_t insn_offset = 0;
5616 bfd_vma max_branch_offset, val;
5619 unsigned char sym_type;
5624 case R_PPC_LOCAL24PC:
5625 case R_PPC_PLTREL24:
5626 max_branch_offset = 1 << 25;
5630 case R_PPC_REL14_BRTAKEN:
5631 case R_PPC_REL14_BRNTAKEN:
5632 max_branch_offset = 1 << 15;
5639 /* Get the value of the symbol referred to by the reloc. */
5640 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5642 /* A local symbol. */
5643 Elf_Internal_Sym *isym;
5645 /* Read this BFD's local symbols. */
5646 if (isymbuf == NULL)
5648 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5649 if (isymbuf == NULL)
5650 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5651 symtab_hdr->sh_info, 0,
5656 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5657 if (isym->st_shndx == SHN_UNDEF)
5658 continue; /* We can't do anything with undefined symbols. */
5659 else if (isym->st_shndx == SHN_ABS)
5660 tsec = bfd_abs_section_ptr;
5661 else if (isym->st_shndx == SHN_COMMON)
5662 tsec = bfd_com_section_ptr;
5664 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5666 toff = isym->st_value;
5667 sym_type = ELF_ST_TYPE (isym->st_info);
5671 /* Global symbol handling. */
5673 struct elf_link_hash_entry *h;
5675 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5676 h = elf_sym_hashes (abfd)[indx];
5678 while (h->root.type == bfd_link_hash_indirect
5679 || h->root.type == bfd_link_hash_warning)
5680 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5684 if (r_type == R_PPC_PLTREL24
5685 && htab->plt != NULL)
5687 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5691 if (htab->plt_type == PLT_NEW)
5694 toff = ent->glink_offset;
5699 toff = ent->plt.offset;
5705 else if (h->root.type == bfd_link_hash_defined
5706 || h->root.type == bfd_link_hash_defweak)
5708 tsec = h->root.u.def.section;
5709 toff = h->root.u.def.value;
5717 /* If the branch and target are in the same section, you have
5718 no hope of adding stubs. We'll error out later should the
5723 /* There probably isn't any reason to handle symbols in
5724 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5725 attribute for a code section, and we are only looking at
5726 branches. However, implement it correctly here as a
5727 reference for other target relax_section functions. */
5728 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5730 /* At this stage in linking, no SEC_MERGE symbol has been
5731 adjusted, so all references to such symbols need to be
5732 passed through _bfd_merged_section_offset. (Later, in
5733 relocate_section, all SEC_MERGE symbols *except* for
5734 section symbols have been adjusted.)
5736 gas may reduce relocations against symbols in SEC_MERGE
5737 sections to a relocation against the section symbol when
5738 the original addend was zero. When the reloc is against
5739 a section symbol we should include the addend in the
5740 offset passed to _bfd_merged_section_offset, since the
5741 location of interest is the original symbol. On the
5742 other hand, an access to "sym+addend" where "sym" is not
5743 a section symbol should not include the addend; Such an
5744 access is presumed to be an offset from "sym"; The
5745 location of interest is just "sym". */
5746 if (sym_type == STT_SECTION)
5747 toff += irel->r_addend;
5749 toff = _bfd_merged_section_offset (abfd, &tsec,
5750 elf_section_data (tsec)->sec_info,
5753 if (sym_type != STT_SECTION)
5754 toff += irel->r_addend;
5756 /* PLTREL24 addends are special. */
5757 else if (r_type != R_PPC_PLTREL24)
5758 toff += irel->r_addend;
5760 /* Attempted -shared link of non-pic code loses. */
5761 if (tsec->output_section == NULL)
5764 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5766 roff = irel->r_offset;
5767 reladdr = isec->output_section->vma + isec->output_offset + roff;
5769 /* If the branch is in range, no need to do anything. */
5770 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5773 /* Look for an existing fixup to this address. */
5774 for (f = fixups; f ; f = f->next)
5775 if (f->tsec == tsec && f->toff == toff)
5781 unsigned long stub_rtype;
5783 val = trampoff - roff;
5784 if (val >= max_branch_offset)
5785 /* Oh dear, we can't reach a trampoline. Don't try to add
5786 one. We'll report an error later. */
5789 if (link_info->shared)
5791 size = 4 * ARRAY_SIZE (shared_stub_entry);
5793 stub_rtype = R_PPC_RELAX32PC;
5797 size = 4 * ARRAY_SIZE (stub_entry);
5799 stub_rtype = R_PPC_RELAX32;
5802 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5803 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5805 if (tsec == htab->plt
5806 || tsec == htab->glink)
5807 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5809 /* Hijack the old relocation. Since we need two
5810 relocations for this use a "composite" reloc. */
5811 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5813 irel->r_offset = trampoff + insn_offset;
5814 if (r_type == R_PPC_PLTREL24)
5817 /* Record the fixup so we don't do it again this section. */
5818 f = bfd_malloc (sizeof (*f));
5822 f->trampoff = trampoff;
5830 val = f->trampoff - roff;
5831 if (val >= max_branch_offset)
5834 /* Nop out the reloc, since we're finalizing things here. */
5835 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5838 /* Get the section contents. */
5839 if (contents == NULL)
5841 /* Get cached copy if it exists. */
5842 if (elf_section_data (isec)->this_hdr.contents != NULL)
5843 contents = elf_section_data (isec)->this_hdr.contents;
5846 /* Go get them off disk. */
5847 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5852 /* Fix up the existing branch to hit the trampoline. */
5853 hit_addr = contents + roff;
5857 case R_PPC_LOCAL24PC:
5858 case R_PPC_PLTREL24:
5859 t0 = bfd_get_32 (abfd, hit_addr);
5861 t0 |= val & 0x3fffffc;
5862 bfd_put_32 (abfd, t0, hit_addr);
5866 case R_PPC_REL14_BRTAKEN:
5867 case R_PPC_REL14_BRNTAKEN:
5868 t0 = bfd_get_32 (abfd, hit_addr);
5871 bfd_put_32 (abfd, t0, hit_addr);
5876 /* Write out the trampolines. */
5886 struct one_fixup *f = fixups;
5887 fixups = fixups->next;
5892 contents = bfd_realloc_or_free (contents, trampoff);
5893 if (contents == NULL)
5896 isec->size = (isec->size + 3) & (bfd_vma) -4;
5897 /* Branch around the trampolines. */
5898 val = B + trampoff - isec->size;
5899 dest = contents + isec->size;
5900 isec->size = trampoff;
5901 bfd_put_32 (abfd, val, dest);
5904 if (link_info->shared)
5906 stub = shared_stub_entry;
5907 size = ARRAY_SIZE (shared_stub_entry);
5912 size = ARRAY_SIZE (stub_entry);
5916 while (dest < contents + trampoff)
5918 bfd_put_32 (abfd, stub[i], dest);
5924 BFD_ASSERT (i == 0);
5928 && symtab_hdr->contents != (unsigned char *) isymbuf)
5930 if (! link_info->keep_memory)
5934 /* Cache the symbols for elf_link_input_bfd. */
5935 symtab_hdr->contents = (unsigned char *) isymbuf;
5939 if (contents != NULL
5940 && elf_section_data (isec)->this_hdr.contents != contents)
5942 if (!changes && !link_info->keep_memory)
5946 /* Cache the section contents for elf_link_input_bfd. */
5947 elf_section_data (isec)->this_hdr.contents = contents;
5953 /* Append sufficient NOP relocs so we can write out relocation
5954 information for the trampolines. */
5955 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
5956 * sizeof (*new_relocs));
5961 memcpy (new_relocs, internal_relocs,
5962 isec->reloc_count * sizeof (*new_relocs));
5963 for (ix = changes; ix--;)
5965 irel = new_relocs + ix + isec->reloc_count;
5967 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5969 if (internal_relocs != elf_section_data (isec)->relocs)
5970 free (internal_relocs);
5971 elf_section_data (isec)->relocs = new_relocs;
5972 isec->reloc_count += changes;
5973 elf_section_data (isec)->rel_hdr.sh_size
5974 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
5976 else if (elf_section_data (isec)->relocs != internal_relocs)
5977 free (internal_relocs);
5979 *again = changes != 0;
5983 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5985 if (contents != NULL
5986 && elf_section_data (isec)->this_hdr.contents != contents)
5988 if (internal_relocs != NULL
5989 && elf_section_data (isec)->relocs != internal_relocs)
5990 free (internal_relocs);
5994 /* What to do when ld finds relocations against symbols defined in
5995 discarded sections. */
5998 ppc_elf_action_discarded (asection *sec)
6000 if (strcmp (".fixup", sec->name) == 0)
6003 if (strcmp (".got2", sec->name) == 0)
6006 return _bfd_elf_default_action_discarded (sec);
6009 /* Fill in the address for a pointer generated in a linker section. */
6012 elf_finish_pointer_linker_section (bfd *input_bfd,
6013 elf_linker_section_t *lsect,
6014 struct elf_link_hash_entry *h,
6016 const Elf_Internal_Rela *rel)
6018 elf_linker_section_pointers_t *linker_section_ptr;
6020 BFD_ASSERT (lsect != NULL);
6024 /* Handle global symbol. */
6025 struct ppc_elf_link_hash_entry *eh;
6027 eh = (struct ppc_elf_link_hash_entry *) h;
6028 BFD_ASSERT (eh->elf.def_regular);
6029 linker_section_ptr = eh->linker_section_pointer;
6033 /* Handle local symbol. */
6034 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6036 BFD_ASSERT (is_ppc_elf (input_bfd));
6037 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6038 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6041 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6044 BFD_ASSERT (linker_section_ptr != NULL);
6046 /* Offset will always be a multiple of four, so use the bottom bit
6047 as a "written" flag. */
6048 if ((linker_section_ptr->offset & 1) == 0)
6050 bfd_put_32 (lsect->section->owner,
6051 relocation + linker_section_ptr->addend,
6052 lsect->section->contents + linker_section_ptr->offset);
6053 linker_section_ptr->offset += 1;
6056 relocation = (lsect->section->output_offset
6057 + linker_section_ptr->offset - 1
6062 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6063 lsect->name, (long) relocation, (long) relocation);
6066 /* Subtract out the addend, because it will get added back in by the normal
6068 return relocation - linker_section_ptr->addend;
6071 /* The RELOCATE_SECTION function is called by the ELF backend linker
6072 to handle the relocations for a section.
6074 The relocs are always passed as Rela structures; if the section
6075 actually uses Rel structures, the r_addend field will always be
6078 This function is responsible for adjust the section contents as
6079 necessary, and (if using Rela relocs and generating a
6080 relocatable output file) adjusting the reloc addend as
6083 This function does not have to worry about setting the reloc
6084 address or the reloc symbol index.
6086 LOCAL_SYMS is a pointer to the swapped in local symbols.
6088 LOCAL_SECTIONS is an array giving the section in the input file
6089 corresponding to the st_shndx field of each local symbol.
6091 The global hash table entry for the global symbols can be found
6092 via elf_sym_hashes (input_bfd).
6094 When generating relocatable output, this function must handle
6095 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6096 going to be the section symbol corresponding to the output
6097 section, which means that the addend must be adjusted
6101 ppc_elf_relocate_section (bfd *output_bfd,
6102 struct bfd_link_info *info,
6104 asection *input_section,
6106 Elf_Internal_Rela *relocs,
6107 Elf_Internal_Sym *local_syms,
6108 asection **local_sections)
6110 Elf_Internal_Shdr *symtab_hdr;
6111 struct elf_link_hash_entry **sym_hashes;
6112 struct ppc_elf_link_hash_table *htab;
6113 Elf_Internal_Rela *rel;
6114 Elf_Internal_Rela *relend;
6115 Elf_Internal_Rela outrel;
6117 asection *got2, *sreloc = NULL;
6118 bfd_vma *local_got_offsets;
6119 bfd_boolean ret = TRUE;
6120 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6121 bfd_boolean is_vxworks_tls;
6124 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6125 "%ld relocations%s",
6126 input_bfd, input_section,
6127 (long) input_section->reloc_count,
6128 (info->relocatable) ? " (relocatable)" : "");
6131 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6133 /* Initialize howto table if not already done. */
6134 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6135 ppc_elf_howto_init ();
6137 htab = ppc_elf_hash_table (info);
6138 local_got_offsets = elf_local_got_offsets (input_bfd);
6139 symtab_hdr = &elf_symtab_hdr (input_bfd);
6140 sym_hashes = elf_sym_hashes (input_bfd);
6141 /* We have to handle relocations in vxworks .tls_vars sections
6142 specially, because the dynamic loader is 'weird'. */
6143 is_vxworks_tls = (htab->is_vxworks && info->shared
6144 && !strcmp (input_section->output_section->name,
6147 relend = relocs + input_section->reloc_count;
6148 for (; rel < relend; rel++)
6150 enum elf_ppc_reloc_type r_type;
6152 bfd_reloc_status_type r;
6153 Elf_Internal_Sym *sym;
6155 struct elf_link_hash_entry *h;
6156 const char *sym_name;
6157 reloc_howto_type *howto;
6158 unsigned long r_symndx;
6160 bfd_vma branch_bit, insn, from;
6161 bfd_boolean unresolved_reloc;
6163 unsigned int tls_type, tls_mask, tls_gd;
6165 r_type = ELF32_R_TYPE (rel->r_info);
6169 unresolved_reloc = FALSE;
6171 r_symndx = ELF32_R_SYM (rel->r_info);
6173 if (r_symndx < symtab_hdr->sh_info)
6175 sym = local_syms + r_symndx;
6176 sec = local_sections[r_symndx];
6177 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6179 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6183 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6184 r_symndx, symtab_hdr, sym_hashes,
6186 unresolved_reloc, warned);
6188 sym_name = h->root.root.string;
6191 if (sec != NULL && elf_discarded_section (sec))
6193 /* For relocs against symbols from removed linkonce sections,
6194 or sections discarded by a linker script, we just want the
6195 section contents zeroed. Avoid any special processing. */
6197 if (r_type < R_PPC_max)
6198 howto = ppc_elf_howto_table[r_type];
6199 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6205 if (info->relocatable)
6208 && r_type == R_PPC_PLTREL24
6209 && rel->r_addend >= 32768)
6211 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6212 addend specifies the GOT pointer offset within .got2. */
6213 rel->r_addend += got2->output_offset;
6218 /* TLS optimizations. Replace instruction sequences and relocs
6219 based on information we collected in tls_optimize. We edit
6220 RELOCS so that --emit-relocs will output something sensible
6221 for the final instruction stream. */
6224 if (IS_PPC_TLS_RELOC (r_type))
6227 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6228 else if (local_got_offsets != NULL)
6231 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
6232 tls_mask = lgot_masks[r_symndx];
6236 /* Ensure reloc mapping code below stays sane. */
6237 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6238 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6239 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6240 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6241 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6242 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6243 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6244 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6251 case R_PPC_GOT_TPREL16:
6252 case R_PPC_GOT_TPREL16_LO:
6254 && (tls_mask & TLS_TPREL) == 0)
6257 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6259 insn |= 0x3c020000; /* addis 0,2,0 */
6260 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6261 r_type = R_PPC_TPREL16_HA;
6262 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6268 && (tls_mask & TLS_TPREL) == 0)
6271 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6272 if ((insn & ((31 << 26) | (31 << 11)))
6273 == ((31 << 26) | (2 << 11)))
6274 rtra = insn & ((1 << 26) - (1 << 16));
6275 else if ((insn & ((31 << 26) | (31 << 16)))
6276 == ((31 << 26) | (2 << 16)))
6277 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6280 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6283 else if ((insn & (31 << 1)) == 23 << 1
6284 && ((insn & (31 << 6)) < 14 << 6
6285 || ((insn & (31 << 6)) >= 16 << 6
6286 && (insn & (31 << 6)) < 24 << 6)))
6287 /* load and store indexed -> dform. */
6288 insn = (32 | ((insn >> 6) & 31)) << 26;
6289 else if ((insn & (31 << 1)) == 21 << 1
6290 && (insn & (0x1a << 6)) == 0)
6291 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6292 insn = (((58 | ((insn >> 6) & 4)) << 26)
6293 | ((insn >> 6) & 1));
6294 else if ((insn & (31 << 1)) == 21 << 1
6295 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6297 insn = (58 << 26) | 2;
6301 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6302 r_type = R_PPC_TPREL16_LO;
6303 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6305 /* Was PPC_TLS which sits on insn boundary, now
6306 PPC_TPREL16_LO which is at low-order half-word. */
6307 rel->r_offset += d_offset;
6311 case R_PPC_GOT_TLSGD16_HI:
6312 case R_PPC_GOT_TLSGD16_HA:
6313 tls_gd = TLS_TPRELGD;
6314 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6318 case R_PPC_GOT_TLSLD16_HI:
6319 case R_PPC_GOT_TLSLD16_HA:
6320 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6323 if ((tls_mask & tls_gd) != 0)
6324 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6325 + R_PPC_GOT_TPREL16);
6328 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6329 rel->r_offset -= d_offset;
6330 r_type = R_PPC_NONE;
6332 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6336 case R_PPC_GOT_TLSGD16:
6337 case R_PPC_GOT_TLSGD16_LO:
6338 tls_gd = TLS_TPRELGD;
6339 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6343 case R_PPC_GOT_TLSLD16:
6344 case R_PPC_GOT_TLSLD16_LO:
6345 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6347 bfd_vma insn1, insn2;
6351 offset = rel[1].r_offset;
6352 insn1 = bfd_get_32 (output_bfd,
6353 contents + rel->r_offset - d_offset);
6354 if ((tls_mask & tls_gd) != 0)
6357 insn1 &= (1 << 26) - 1;
6358 insn1 |= 32 << 26; /* lwz */
6359 insn2 = 0x7c631214; /* add 3,3,2 */
6361 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info), R_PPC_NONE);
6362 rel[1].r_addend = 0;
6363 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6364 + R_PPC_GOT_TPREL16);
6365 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6370 insn1 = 0x3c620000; /* addis 3,2,0 */
6371 insn2 = 0x38630000; /* addi 3,3,0 */
6374 /* Was an LD reloc. */
6376 r_symndx < symtab_hdr->sh_info;
6378 if (local_sections[r_symndx] == sec)
6380 if (r_symndx >= symtab_hdr->sh_info)
6382 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6384 rel->r_addend -= (local_syms[r_symndx].st_value
6385 + sec->output_offset
6386 + sec->output_section->vma);
6388 r_type = R_PPC_TPREL16_HA;
6389 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6390 rel[1].r_info = ELF32_R_INFO (r_symndx,
6392 rel[1].r_offset += d_offset;
6393 rel[1].r_addend = rel->r_addend;
6395 bfd_put_32 (output_bfd, insn1,
6396 contents + rel->r_offset - d_offset);
6397 bfd_put_32 (output_bfd, insn2, contents + offset);
6400 /* We changed the symbol on an LD reloc. Start over
6401 in order to get h, sym, sec etc. right. */
6409 /* Handle other relocations that tweak non-addend part of insn. */
6416 /* Branch taken prediction relocations. */
6417 case R_PPC_ADDR14_BRTAKEN:
6418 case R_PPC_REL14_BRTAKEN:
6419 branch_bit = BRANCH_PREDICT_BIT;
6422 /* Branch not taken prediction relocations. */
6423 case R_PPC_ADDR14_BRNTAKEN:
6424 case R_PPC_REL14_BRNTAKEN:
6425 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6426 insn &= ~BRANCH_PREDICT_BIT;
6429 from = (rel->r_offset
6430 + input_section->output_offset
6431 + input_section->output_section->vma);
6433 /* Invert 'y' bit if not the default. */
6434 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6435 insn ^= BRANCH_PREDICT_BIT;
6437 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6441 addend = rel->r_addend;
6444 if (r_type < R_PPC_max)
6445 howto = ppc_elf_howto_table[r_type];
6449 (*_bfd_error_handler)
6450 (_("%B: unknown relocation type %d for symbol %s"),
6451 input_bfd, (int) r_type, sym_name);
6453 bfd_set_error (bfd_error_bad_value);
6459 case R_PPC_EMB_MRKREF:
6460 case R_PPC_GNU_VTINHERIT:
6461 case R_PPC_GNU_VTENTRY:
6464 /* GOT16 relocations. Like an ADDR16 using the symbol's
6465 address in the GOT as relocation value instead of the
6466 symbol's value itself. Also, create a GOT entry for the
6467 symbol and put the symbol value there. */
6468 case R_PPC_GOT_TLSGD16:
6469 case R_PPC_GOT_TLSGD16_LO:
6470 case R_PPC_GOT_TLSGD16_HI:
6471 case R_PPC_GOT_TLSGD16_HA:
6472 tls_type = TLS_TLS | TLS_GD;
6475 case R_PPC_GOT_TLSLD16:
6476 case R_PPC_GOT_TLSLD16_LO:
6477 case R_PPC_GOT_TLSLD16_HI:
6478 case R_PPC_GOT_TLSLD16_HA:
6479 tls_type = TLS_TLS | TLS_LD;
6482 case R_PPC_GOT_TPREL16:
6483 case R_PPC_GOT_TPREL16_LO:
6484 case R_PPC_GOT_TPREL16_HI:
6485 case R_PPC_GOT_TPREL16_HA:
6486 tls_type = TLS_TLS | TLS_TPREL;
6489 case R_PPC_GOT_DTPREL16:
6490 case R_PPC_GOT_DTPREL16_LO:
6491 case R_PPC_GOT_DTPREL16_HI:
6492 case R_PPC_GOT_DTPREL16_HA:
6493 tls_type = TLS_TLS | TLS_DTPREL;
6497 case R_PPC_GOT16_LO:
6498 case R_PPC_GOT16_HI:
6499 case R_PPC_GOT16_HA:
6502 /* Relocation is to the entry for this symbol in the global
6508 if (htab->got == NULL)
6512 if (tls_type == (TLS_TLS | TLS_LD)
6514 || !h->def_dynamic))
6515 offp = &htab->tlsld_got.offset;
6519 dyn = htab->elf.dynamic_sections_created;
6520 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6522 && SYMBOL_REFERENCES_LOCAL (info, h)))
6523 /* This is actually a static link, or it is a
6524 -Bsymbolic link and the symbol is defined
6525 locally, or the symbol was forced to be local
6526 because of a version file. */
6531 unresolved_reloc = FALSE;
6533 offp = &h->got.offset;
6537 if (local_got_offsets == NULL)
6539 offp = &local_got_offsets[r_symndx];
6542 /* The offset must always be a multiple of 4. We use the
6543 least significant bit to record whether we have already
6544 processed this entry. */
6550 unsigned int tls_m = (tls_mask
6551 & (TLS_LD | TLS_GD | TLS_DTPREL
6552 | TLS_TPREL | TLS_TPRELGD));
6554 if (offp == &htab->tlsld_got.offset)
6560 /* We might have multiple got entries for this sym.
6561 Initialize them all. */
6566 if ((tls_m & TLS_LD) != 0)
6568 tls_ty = TLS_TLS | TLS_LD;
6571 else if ((tls_m & TLS_GD) != 0)
6573 tls_ty = TLS_TLS | TLS_GD;
6576 else if ((tls_m & TLS_DTPREL) != 0)
6578 tls_ty = TLS_TLS | TLS_DTPREL;
6579 tls_m &= ~TLS_DTPREL;
6581 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6583 tls_ty = TLS_TLS | TLS_TPREL;
6587 /* Generate relocs for the dynamic linker. */
6588 if ((info->shared || indx != 0)
6589 && (offp == &htab->tlsld_got.offset
6591 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6592 || h->root.type != bfd_link_hash_undefweak))
6594 outrel.r_offset = (htab->got->output_section->vma
6595 + htab->got->output_offset
6597 outrel.r_addend = 0;
6598 if (tls_ty & (TLS_LD | TLS_GD))
6600 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
6601 if (tls_ty == (TLS_TLS | TLS_GD))
6603 loc = htab->relgot->contents;
6604 loc += (htab->relgot->reloc_count++
6605 * sizeof (Elf32_External_Rela));
6606 bfd_elf32_swap_reloca_out (output_bfd,
6608 outrel.r_offset += 4;
6610 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6613 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6614 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6615 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6616 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6618 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6620 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
6621 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
6623 outrel.r_addend += relocation;
6624 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
6625 outrel.r_addend -= htab->elf.tls_sec->vma;
6627 loc = htab->relgot->contents;
6628 loc += (htab->relgot->reloc_count++
6629 * sizeof (Elf32_External_Rela));
6630 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6633 /* Init the .got section contents if we're not
6634 emitting a reloc. */
6637 bfd_vma value = relocation;
6639 if (tls_ty == (TLS_TLS | TLS_LD))
6641 else if (tls_ty != 0)
6643 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
6644 if (tls_ty == (TLS_TLS | TLS_TPREL))
6645 value += DTP_OFFSET - TP_OFFSET;
6647 if (tls_ty == (TLS_TLS | TLS_GD))
6649 bfd_put_32 (output_bfd, value,
6650 htab->got->contents + off + 4);
6654 bfd_put_32 (output_bfd, value,
6655 htab->got->contents + off);
6659 if (tls_ty & (TLS_LD | TLS_GD))
6668 if (off >= (bfd_vma) -2)
6671 if ((tls_type & TLS_TLS) != 0)
6673 if (tls_type != (TLS_TLS | TLS_LD))
6675 if ((tls_mask & TLS_LD) != 0
6677 || !h->def_dynamic))
6679 if (tls_type != (TLS_TLS | TLS_GD))
6681 if ((tls_mask & TLS_GD) != 0)
6683 if (tls_type != (TLS_TLS | TLS_DTPREL))
6685 if ((tls_mask & TLS_DTPREL) != 0)
6692 relocation = (htab->got->output_section->vma
6693 + htab->got->output_offset
6695 - SYM_VAL (htab->elf.hgot));
6697 /* Addends on got relocations don't make much sense.
6698 x+off@got is actually x@got+off, and since the got is
6699 generated by a hash table traversal, the value in the
6700 got at entry m+n bears little relation to the entry m. */
6702 (*_bfd_error_handler)
6703 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6706 (long) rel->r_offset,
6712 /* Relocations that need no special processing. */
6713 case R_PPC_LOCAL24PC:
6714 /* It makes no sense to point a local relocation
6715 at a symbol not in this object. */
6716 if (unresolved_reloc)
6718 if (! (*info->callbacks->undefined_symbol) (info,
6719 h->root.root.string,
6729 case R_PPC_DTPREL16:
6730 case R_PPC_DTPREL16_LO:
6731 case R_PPC_DTPREL16_HI:
6732 case R_PPC_DTPREL16_HA:
6733 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6736 /* Relocations that may need to be propagated if this is a shared
6739 case R_PPC_TPREL16_LO:
6740 case R_PPC_TPREL16_HI:
6741 case R_PPC_TPREL16_HA:
6742 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6743 /* The TPREL16 relocs shouldn't really be used in shared
6744 libs as they will result in DT_TEXTREL being set, but
6745 support them anyway. */
6749 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6752 case R_PPC_DTPREL32:
6753 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6756 case R_PPC_DTPMOD32:
6762 case R_PPC_REL16_LO:
6763 case R_PPC_REL16_HI:
6764 case R_PPC_REL16_HA:
6768 if (h == NULL || h == htab->elf.hgot)
6774 case R_PPC_ADDR16_LO:
6775 case R_PPC_ADDR16_HI:
6776 case R_PPC_ADDR16_HA:
6783 case R_PPC_REL14_BRTAKEN:
6784 case R_PPC_REL14_BRNTAKEN:
6785 /* If these relocations are not to a named symbol, they can be
6786 handled right here, no need to bother the dynamic linker. */
6787 if (SYMBOL_CALLS_LOCAL (info, h)
6788 || h == htab->elf.hgot)
6794 case R_PPC_ADDR14_BRTAKEN:
6795 case R_PPC_ADDR14_BRNTAKEN:
6796 if (h != NULL && !info->shared)
6801 if ((input_section->flags & SEC_ALLOC) == 0
6807 && ((h->root.type == bfd_link_hash_undefined
6808 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6809 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6810 || (h->root.type == bfd_link_hash_undefweak
6811 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
6812 && (must_be_dyn_reloc (info, r_type)
6813 || !SYMBOL_CALLS_LOCAL (info, h)))
6814 || (ELIMINATE_COPY_RELOCS
6819 && !h->def_regular))
6824 fprintf (stderr, "ppc_elf_relocate_section needs to "
6825 "create relocation for %s\n",
6826 (h && h->root.root.string
6827 ? h->root.root.string : "<unknown>"));
6830 /* When generating a shared object, these relocations
6831 are copied into the output file to be resolved at run
6835 sreloc = _bfd_elf_get_dynamic_reloc_section
6836 (input_bfd, input_section, /*rela?*/ TRUE);
6843 _bfd_elf_section_offset (output_bfd, info, input_section,
6845 if (outrel.r_offset == (bfd_vma) -1
6846 || outrel.r_offset == (bfd_vma) -2)
6847 skip = (int) outrel.r_offset;
6848 outrel.r_offset += (input_section->output_section->vma
6849 + input_section->output_offset);
6852 memset (&outrel, 0, sizeof outrel);
6854 && (h->root.type == bfd_link_hash_undefined
6855 || h->root.type == bfd_link_hash_undefweak))
6856 || !SYMBOL_REFERENCES_LOCAL (info, h))
6858 unresolved_reloc = FALSE;
6859 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6860 outrel.r_addend = rel->r_addend;
6864 outrel.r_addend = relocation + rel->r_addend;
6866 if (r_type == R_PPC_ADDR32)
6867 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6872 if (r_symndx == 0 || bfd_is_abs_section (sec))
6874 else if (sec == NULL || sec->owner == NULL)
6876 bfd_set_error (bfd_error_bad_value);
6883 /* We are turning this relocation into one
6884 against a section symbol. It would be
6885 proper to subtract the symbol's value,
6886 osec->vma, from the emitted reloc addend,
6887 but ld.so expects buggy relocs. */
6888 osec = sec->output_section;
6889 indx = elf_section_data (osec)->dynindx;
6892 osec = htab->elf.text_index_section;
6893 indx = elf_section_data (osec)->dynindx;
6895 BFD_ASSERT (indx != 0);
6898 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6899 indx, osec->name, osec->flags,
6900 h->root.root.string);
6904 outrel.r_info = ELF32_R_INFO (indx, r_type);
6908 loc = sreloc->contents;
6909 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6910 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6915 /* This reloc will be computed at runtime. We clear the memory
6916 so that it contains predictable value. */
6918 && ((input_section->flags & SEC_ALLOC) != 0
6919 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6921 relocation = howto->pc_relative ? outrel.r_offset : 0;
6928 case R_PPC_RELAX32PC_PLT:
6929 case R_PPC_RELAX32_PLT:
6931 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6933 if (htab->plt_type == PLT_NEW)
6934 relocation = (htab->glink->output_section->vma
6935 + htab->glink->output_offset
6936 + ent->glink_offset);
6938 relocation = (htab->plt->output_section->vma
6939 + htab->plt->output_offset
6942 if (r_type == R_PPC_RELAX32_PLT)
6946 case R_PPC_RELAX32PC:
6947 relocation -= (input_section->output_section->vma
6948 + input_section->output_offset
6949 + rel->r_offset - 4);
6958 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6959 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6961 /* We're clearing the bits for R_PPC_ADDR16_HA
6962 and R_PPC_ADDR16_LO here. */
6966 /* t0 is HA, t1 is LO */
6967 relocation += addend;
6968 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6969 t1 |= relocation & 0xffff;
6971 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6972 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6974 /* Rewrite the reloc and convert one of the trailing nop
6975 relocs to describe this relocation. */
6976 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
6977 /* The relocs are at the bottom 2 bytes */
6978 rel[0].r_offset += 2;
6979 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
6980 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6981 rel[1].r_offset += 4;
6982 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6987 /* Indirect .sdata relocation. */
6988 case R_PPC_EMB_SDAI16:
6989 BFD_ASSERT (htab->sdata[0].section != NULL);
6991 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6992 h, relocation, rel);
6995 /* Indirect .sdata2 relocation. */
6996 case R_PPC_EMB_SDA2I16:
6997 BFD_ASSERT (htab->sdata[1].section != NULL);
6999 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7000 h, relocation, rel);
7003 /* Handle the TOC16 reloc. We want to use the offset within the .got
7004 section, not the actual VMA. This is appropriate when generating
7005 an embedded ELF object, for which the .got section acts like the
7006 AIX .toc section. */
7007 case R_PPC_TOC16: /* phony GOT16 relocations */
7008 if (sec == NULL || sec->output_section == NULL)
7010 unresolved_reloc = TRUE;
7013 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7014 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7016 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7019 case R_PPC_PLTREL24:
7020 /* Relocation is to the entry for this symbol in the
7021 procedure linkage table. */
7023 struct plt_entry *ent = find_plt_ent (h, got2, addend);
7027 || htab->plt == NULL)
7029 /* We didn't make a PLT entry for this symbol. This
7030 happens when statically linking PIC code, or when
7031 using -Bsymbolic. */
7035 unresolved_reloc = FALSE;
7036 if (htab->plt_type == PLT_NEW)
7037 relocation = (htab->glink->output_section->vma
7038 + htab->glink->output_offset
7039 + ent->glink_offset);
7041 relocation = (htab->plt->output_section->vma
7042 + htab->plt->output_offset
7047 /* Relocate against _SDA_BASE_. */
7048 case R_PPC_SDAREL16:
7052 if (sec == NULL || sec->output_section == NULL)
7054 unresolved_reloc = TRUE;
7058 name = bfd_get_section_name (abfd, sec->output_section);
7059 if (! ((CONST_STRNEQ (name, ".sdata")
7060 && (name[6] == 0 || name[6] == '.'))
7061 || (CONST_STRNEQ (name, ".sbss")
7062 && (name[5] == 0 || name[5] == '.'))))
7064 (*_bfd_error_handler)
7065 (_("%B: the target (%s) of a %s relocation is "
7066 "in the wrong output section (%s)"),
7072 addend -= SYM_VAL (htab->sdata[0].sym);
7076 /* Relocate against _SDA2_BASE_. */
7077 case R_PPC_EMB_SDA2REL:
7081 if (sec == NULL || sec->output_section == NULL)
7083 unresolved_reloc = TRUE;
7087 name = bfd_get_section_name (abfd, sec->output_section);
7088 if (! (CONST_STRNEQ (name, ".sdata2")
7089 || CONST_STRNEQ (name, ".sbss2")))
7091 (*_bfd_error_handler)
7092 (_("%B: the target (%s) of a %s relocation is "
7093 "in the wrong output section (%s)"),
7099 bfd_set_error (bfd_error_bad_value);
7103 addend -= SYM_VAL (htab->sdata[1].sym);
7107 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7108 case R_PPC_EMB_SDA21:
7109 case R_PPC_EMB_RELSDA:
7114 if (sec == NULL || sec->output_section == NULL)
7116 unresolved_reloc = TRUE;
7120 name = bfd_get_section_name (abfd, sec->output_section);
7121 if (((CONST_STRNEQ (name, ".sdata")
7122 && (name[6] == 0 || name[6] == '.'))
7123 || (CONST_STRNEQ (name, ".sbss")
7124 && (name[5] == 0 || name[5] == '.'))))
7127 addend -= SYM_VAL (htab->sdata[0].sym);
7129 else if (CONST_STRNEQ (name, ".sdata2")
7130 || CONST_STRNEQ (name, ".sbss2"))
7133 addend -= SYM_VAL (htab->sdata[1].sym);
7135 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7136 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7142 (*_bfd_error_handler)
7143 (_("%B: the target (%s) of a %s relocation is "
7144 "in the wrong output section (%s)"),
7150 bfd_set_error (bfd_error_bad_value);
7155 if (r_type == R_PPC_EMB_SDA21)
7156 { /* fill in register field */
7157 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7158 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7159 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7164 /* Relocate against the beginning of the section. */
7166 case R_PPC_SECTOFF_LO:
7167 case R_PPC_SECTOFF_HI:
7168 case R_PPC_SECTOFF_HA:
7169 if (sec == NULL || sec->output_section == NULL)
7171 unresolved_reloc = TRUE;
7174 addend -= sec->output_section->vma;
7177 /* Negative relocations. */
7178 case R_PPC_EMB_NADDR32:
7179 case R_PPC_EMB_NADDR16:
7180 case R_PPC_EMB_NADDR16_LO:
7181 case R_PPC_EMB_NADDR16_HI:
7182 case R_PPC_EMB_NADDR16_HA:
7183 addend -= 2 * relocation;
7187 case R_PPC_GLOB_DAT:
7188 case R_PPC_JMP_SLOT:
7189 case R_PPC_RELATIVE:
7191 case R_PPC_PLTREL32:
7192 case R_PPC_PLT16_LO:
7193 case R_PPC_PLT16_HI:
7194 case R_PPC_PLT16_HA:
7196 case R_PPC_EMB_RELSEC16:
7197 case R_PPC_EMB_RELST_LO:
7198 case R_PPC_EMB_RELST_HI:
7199 case R_PPC_EMB_RELST_HA:
7200 case R_PPC_EMB_BIT_FLD:
7201 (*_bfd_error_handler)
7202 (_("%B: relocation %s is not yet supported for symbol %s."),
7207 bfd_set_error (bfd_error_invalid_operation);
7212 /* Do any further special processing. */
7218 case R_PPC_ADDR16_HA:
7219 case R_PPC_REL16_HA:
7220 case R_PPC_SECTOFF_HA:
7221 case R_PPC_TPREL16_HA:
7222 case R_PPC_DTPREL16_HA:
7223 case R_PPC_EMB_NADDR16_HA:
7224 case R_PPC_EMB_RELST_HA:
7225 /* It's just possible that this symbol is a weak symbol
7226 that's not actually defined anywhere. In that case,
7227 'sec' would be NULL, and we should leave the symbol
7228 alone (it will be set to zero elsewhere in the link). */
7233 case R_PPC_PLT16_HA:
7234 case R_PPC_GOT16_HA:
7235 case R_PPC_GOT_TLSGD16_HA:
7236 case R_PPC_GOT_TLSLD16_HA:
7237 case R_PPC_GOT_TPREL16_HA:
7238 case R_PPC_GOT_DTPREL16_HA:
7239 /* Add 0x10000 if sign bit in 0:15 is set.
7240 Bits 0:15 are not used. */
7246 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7247 "offset = %ld, addend = %ld\n",
7252 (long) rel->r_offset,
7256 if (unresolved_reloc
7257 && !((input_section->flags & SEC_DEBUGGING) != 0
7260 (*_bfd_error_handler)
7261 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7264 (long) rel->r_offset,
7270 r = _bfd_final_link_relocate (howto,
7278 if (r != bfd_reloc_ok)
7280 if (r == bfd_reloc_overflow)
7285 && h->root.type == bfd_link_hash_undefweak
7286 && howto->pc_relative)
7288 /* Assume this is a call protected by other code that
7289 detect the symbol is undefined. If this is the case,
7290 we can safely ignore the overflow. If not, the
7291 program is hosed anyway, and a little warning isn't
7297 if (! (*info->callbacks->reloc_overflow) (info,
7298 (h ? &h->root : NULL),
7309 (*_bfd_error_handler)
7310 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7311 input_bfd, input_section,
7312 (long) rel->r_offset, howto->name, sym_name, (int) r);
7319 fprintf (stderr, "\n");
7325 #define PPC_LO(v) ((v) & 0xffff)
7326 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7327 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7329 /* Finish up dynamic symbol handling. We set the contents of various
7330 dynamic sections here. */
7333 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7334 struct bfd_link_info *info,
7335 struct elf_link_hash_entry *h,
7336 Elf_Internal_Sym *sym)
7338 struct ppc_elf_link_hash_table *htab;
7339 struct plt_entry *ent;
7340 bfd_boolean doneone;
7343 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7344 h->root.root.string);
7347 htab = ppc_elf_hash_table (info);
7348 BFD_ASSERT (htab->elf.dynobj != NULL);
7351 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7352 if (ent->plt.offset != (bfd_vma) -1)
7356 Elf_Internal_Rela rela;
7358 bfd_vma reloc_index;
7360 if (htab->plt_type == PLT_NEW)
7361 reloc_index = ent->plt.offset / 4;
7364 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7365 / htab->plt_slot_size);
7366 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
7367 && htab->plt_type == PLT_OLD)
7368 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7371 /* This symbol has an entry in the procedure linkage table.
7373 if (htab->plt_type == PLT_VXWORKS)
7376 const bfd_vma *plt_entry;
7378 /* The first three entries in .got.plt are reserved. */
7379 got_offset = (reloc_index + 3) * 4;
7381 /* Use the right PLT. */
7382 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
7383 : ppc_elf_vxworks_plt_entry;
7385 /* Fill in the .plt on VxWorks. */
7388 bfd_put_32 (output_bfd,
7389 plt_entry[0] | PPC_HA (got_offset),
7390 htab->plt->contents + ent->plt.offset + 0);
7391 bfd_put_32 (output_bfd,
7392 plt_entry[1] | PPC_LO (got_offset),
7393 htab->plt->contents + ent->plt.offset + 4);
7397 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
7399 bfd_put_32 (output_bfd,
7400 plt_entry[0] | PPC_HA (got_loc),
7401 htab->plt->contents + ent->plt.offset + 0);
7402 bfd_put_32 (output_bfd,
7403 plt_entry[1] | PPC_LO (got_loc),
7404 htab->plt->contents + ent->plt.offset + 4);
7407 bfd_put_32 (output_bfd, plt_entry[2],
7408 htab->plt->contents + ent->plt.offset + 8);
7409 bfd_put_32 (output_bfd, plt_entry[3],
7410 htab->plt->contents + ent->plt.offset + 12);
7412 /* This instruction is an immediate load. The value loaded is
7413 the byte offset of the R_PPC_JMP_SLOT relocation from the
7414 start of the .rela.plt section. The value is stored in the
7415 low-order 16 bits of the load instruction. */
7416 /* NOTE: It appears that this is now an index rather than a
7417 prescaled offset. */
7418 bfd_put_32 (output_bfd,
7419 plt_entry[4] | reloc_index,
7420 htab->plt->contents + ent->plt.offset + 16);
7421 /* This instruction is a PC-relative branch whose target is
7422 the start of the PLT section. The address of this branch
7423 instruction is 20 bytes beyond the start of this PLT entry.
7424 The address is encoded in bits 6-29, inclusive. The value
7425 stored is right-shifted by two bits, permitting a 26-bit
7427 bfd_put_32 (output_bfd,
7429 | (-(ent->plt.offset + 20) & 0x03fffffc)),
7430 htab->plt->contents + ent->plt.offset + 20);
7431 bfd_put_32 (output_bfd, plt_entry[6],
7432 htab->plt->contents + ent->plt.offset + 24);
7433 bfd_put_32 (output_bfd, plt_entry[7],
7434 htab->plt->contents + ent->plt.offset + 28);
7436 /* Fill in the GOT entry corresponding to this PLT slot with
7437 the address immediately after the the "bctr" instruction
7438 in this PLT entry. */
7439 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
7440 + htab->plt->output_offset
7441 + ent->plt.offset + 16),
7442 htab->sgotplt->contents + got_offset);
7446 /* Fill in a couple of entries in .rela.plt.unloaded. */
7447 loc = htab->srelplt2->contents
7448 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
7449 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
7450 * sizeof (Elf32_External_Rela));
7452 /* Provide the @ha relocation for the first instruction. */
7453 rela.r_offset = (htab->plt->output_section->vma
7454 + htab->plt->output_offset
7455 + ent->plt.offset + 2);
7456 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
7458 rela.r_addend = got_offset;
7459 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7460 loc += sizeof (Elf32_External_Rela);
7462 /* Provide the @l relocation for the second instruction. */
7463 rela.r_offset = (htab->plt->output_section->vma
7464 + htab->plt->output_offset
7465 + ent->plt.offset + 6);
7466 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
7468 rela.r_addend = got_offset;
7469 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7470 loc += sizeof (Elf32_External_Rela);
7472 /* Provide a relocation for the GOT entry corresponding to this
7473 PLT slot. Point it at the middle of the .plt entry. */
7474 rela.r_offset = (htab->sgotplt->output_section->vma
7475 + htab->sgotplt->output_offset
7477 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
7479 rela.r_addend = ent->plt.offset + 16;
7480 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7483 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7484 In particular, the offset for the relocation is not the
7485 address of the PLT entry for this function, as specified
7486 by the ABI. Instead, the offset is set to the address of
7487 the GOT slot for this function. See EABI 4.4.4.1. */
7488 rela.r_offset = (htab->sgotplt->output_section->vma
7489 + htab->sgotplt->output_offset
7495 rela.r_offset = (htab->plt->output_section->vma
7496 + htab->plt->output_offset
7498 if (htab->plt_type == PLT_OLD)
7500 /* We don't need to fill in the .plt. The ppc dynamic
7501 linker will fill it in. */
7505 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
7506 + htab->glink->output_section->vma
7507 + htab->glink->output_offset);
7508 bfd_put_32 (output_bfd, val,
7509 htab->plt->contents + ent->plt.offset);
7513 /* Fill in the entry in the .rela.plt section. */
7514 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
7517 loc = (htab->relplt->contents
7518 + reloc_index * sizeof (Elf32_External_Rela));
7519 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7521 if (!h->def_regular)
7523 /* Mark the symbol as undefined, rather than as
7524 defined in the .plt section. Leave the value if
7525 there were any relocations where pointer equality
7526 matters (this is a clue for the dynamic linker, to
7527 make function pointer comparisons work between an
7528 application and shared library), otherwise set it
7530 sym->st_shndx = SHN_UNDEF;
7531 if (!h->pointer_equality_needed)
7533 else if (!h->ref_regular_nonweak)
7535 /* This breaks function pointer comparisons, but
7536 that is better than breaking tests for a NULL
7537 function pointer. */
7544 if (htab->plt_type == PLT_NEW)
7549 plt = (ent->plt.offset
7550 + htab->plt->output_section->vma
7551 + htab->plt->output_offset);
7552 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
7554 if (info->shared || info->pie)
7558 if (ent->addend >= 32768)
7560 + ent->sec->output_section->vma
7561 + ent->sec->output_offset);
7562 else if (htab->elf.hgot != NULL)
7563 got = SYM_VAL (htab->elf.hgot);
7567 if (plt + 0x8000 < 0x10000)
7569 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7571 bfd_put_32 (output_bfd, MTCTR_11, p);
7573 bfd_put_32 (output_bfd, BCTR, p);
7575 bfd_put_32 (output_bfd, NOP, p);
7580 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7582 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7584 bfd_put_32 (output_bfd, MTCTR_11, p);
7586 bfd_put_32 (output_bfd, BCTR, p);
7592 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7594 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7596 bfd_put_32 (output_bfd, MTCTR_11, p);
7598 bfd_put_32 (output_bfd, BCTR, p);
7601 /* We only need one non-PIC glink stub. */
7612 Elf_Internal_Rela rela;
7615 /* This symbols needs a copy reloc. Set it up. */
7618 fprintf (stderr, ", copy");
7621 BFD_ASSERT (h->dynindx != -1);
7623 if (ppc_elf_hash_entry (h)->has_sda_refs)
7627 BFD_ASSERT (s != NULL);
7629 rela.r_offset = SYM_VAL (h);
7630 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7632 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7633 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7637 fprintf (stderr, "\n");
7640 /* Mark some specially defined symbols as absolute. */
7641 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7642 || (!htab->is_vxworks
7643 && (h == htab->elf.hgot
7644 || strcmp (h->root.root.string,
7645 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7646 sym->st_shndx = SHN_ABS;
7651 static enum elf_reloc_type_class
7652 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
7654 switch (ELF32_R_TYPE (rela->r_info))
7656 case R_PPC_RELATIVE:
7657 return reloc_class_relative;
7660 case R_PPC_JMP_SLOT:
7661 return reloc_class_plt;
7663 return reloc_class_copy;
7665 return reloc_class_normal;
7669 /* Finish up the dynamic sections. */
7672 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7673 struct bfd_link_info *info)
7677 struct ppc_elf_link_hash_table *htab;
7680 bfd_boolean ret = TRUE;
7683 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7686 htab = ppc_elf_hash_table (info);
7687 dynobj = elf_hash_table (info)->dynobj;
7688 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7689 if (htab->is_vxworks)
7690 splt = bfd_get_section_by_name (dynobj, ".plt");
7695 if (htab->elf.hgot != NULL)
7696 got = SYM_VAL (htab->elf.hgot);
7698 if (htab->elf.dynamic_sections_created)
7700 Elf32_External_Dyn *dyncon, *dynconend;
7702 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7704 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7705 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7706 for (; dyncon < dynconend; dyncon++)
7708 Elf_Internal_Dyn dyn;
7711 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7716 if (htab->is_vxworks)
7720 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7724 dyn.d_un.d_val = htab->relplt->size;
7729 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7733 dyn.d_un.d_ptr = got;
7737 if (htab->is_vxworks)
7740 dyn.d_un.d_ptr -= htab->relplt->size;
7746 if (htab->is_vxworks
7747 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7752 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7756 if (htab->got != NULL)
7758 if (htab->elf.hgot->root.u.def.section == htab->got
7759 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
7761 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
7763 p += htab->elf.hgot->root.u.def.value;
7764 if (htab->plt_type == PLT_OLD)
7766 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
7767 so that a function can easily find the address of
7768 _GLOBAL_OFFSET_TABLE_. */
7769 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
7770 < htab->elf.hgot->root.u.def.section->size);
7771 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
7776 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
7777 BFD_ASSERT (htab->elf.hgot->root.u.def.value
7778 < htab->elf.hgot->root.u.def.section->size);
7779 bfd_put_32 (output_bfd, val, p);
7784 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
7785 htab->elf.hgot->root.root.string,
7786 (htab->sgotplt != NULL
7787 ? htab->sgotplt->name : htab->got->name));
7788 bfd_set_error (bfd_error_bad_value);
7792 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7795 /* Fill in the first entry in the VxWorks procedure linkage table. */
7796 if (splt && splt->size > 0)
7798 /* Use the right PLT. */
7799 static const bfd_vma *plt_entry = NULL;
7800 plt_entry = info->shared ?
7801 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7805 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
7807 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
7808 splt->contents + 0);
7809 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
7810 splt->contents + 4);
7814 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7815 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7817 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7818 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7819 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7820 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7821 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7822 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7826 Elf_Internal_Rela rela;
7829 loc = htab->srelplt2->contents;
7831 /* Output the @ha relocation for the first instruction. */
7832 rela.r_offset = (htab->plt->output_section->vma
7833 + htab->plt->output_offset
7835 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7837 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7838 loc += sizeof (Elf32_External_Rela);
7840 /* Output the @l relocation for the second instruction. */
7841 rela.r_offset = (htab->plt->output_section->vma
7842 + htab->plt->output_offset
7844 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7846 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7847 loc += sizeof (Elf32_External_Rela);
7849 /* Fix up the remaining relocations. They may have the wrong
7850 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7851 in which symbols were output. */
7852 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7854 Elf_Internal_Rela rel;
7856 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7857 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7858 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7859 loc += sizeof (Elf32_External_Rela);
7861 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7862 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7863 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7864 loc += sizeof (Elf32_External_Rela);
7866 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7867 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
7868 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7869 loc += sizeof (Elf32_External_Rela);
7874 if (htab->glink != NULL && htab->glink->contents != NULL)
7877 unsigned char *endp;
7882 * PIC glink code is the following:
7884 * # ith PLT code stub.
7885 * addis 11,30,(plt+(i-1)*4-got)@ha
7886 * lwz 11,(plt+(i-1)*4-got)@l(11)
7890 * # A table of branches, one for each plt entry.
7891 * # The idea is that the plt call stub loads ctr and r11 with these
7892 * # addresses, so (r11 - res_0) gives the plt index * 4.
7893 * res_0: b PLTresolve
7894 * res_1: b PLTresolve
7896 * # Some number of entries towards the end can be nops
7902 * addis 11,11,(1f-res_0)@ha
7905 * 1: addi 11,11,(1b-res_0)@l
7908 * sub 11,11,12 # r11 = index * 4
7909 * addis 12,12,(got+4-1b)@ha
7910 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7911 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7914 * add 11,0,11 # r11 = index * 12 = reloc offset.
7917 static const unsigned int pic_plt_resolve[] =
7938 * Non-PIC glink code is a little simpler.
7940 * # ith PLT code stub.
7941 * lis 11,(plt+(i-1)*4)@ha
7942 * lwz 11,(plt+(i-1)*4)@l(11)
7946 * The branch table is the same, then comes
7950 * addis 11,11,(-res_0)@ha
7951 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
7952 * addi 11,11,(-res_0)@l # r11 = index * 4
7955 * lwz 12,(got+8)@l(12) # got[2] contains the map address
7956 * add 11,0,11 # r11 = index * 12 = reloc offset.
7959 static const unsigned int plt_resolve[] =
7979 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7981 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7984 /* Build the branch table, one for each plt entry (less one),
7985 and perhaps some padding. */
7986 p = htab->glink->contents;
7987 p += htab->glink_pltresolve;
7988 endp = htab->glink->contents;
7989 endp += htab->glink->size - GLINK_PLTRESOLVE;
7990 while (p < endp - 8 * 4)
7992 bfd_put_32 (output_bfd, B + endp - p, p);
7997 bfd_put_32 (output_bfd, NOP, p);
8001 res0 = (htab->glink_pltresolve
8002 + htab->glink->output_section->vma
8003 + htab->glink->output_offset);
8005 /* Last comes the PLTresolve stub. */
8006 if (info->shared || info->pie)
8010 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8012 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8015 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8017 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8018 + htab->glink->output_section->vma
8019 + htab->glink->output_offset);
8021 bfd_put_32 (output_bfd,
8022 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8023 bfd_put_32 (output_bfd,
8024 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8025 bfd_put_32 (output_bfd,
8026 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8027 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8029 bfd_put_32 (output_bfd,
8030 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8031 bfd_put_32 (output_bfd,
8032 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8036 bfd_put_32 (output_bfd,
8037 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8038 bfd_put_32 (output_bfd,
8039 LWZ_12_12 + 4, p + 9*4);
8044 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8046 bfd_put_32 (output_bfd, plt_resolve[i], p);
8049 p -= 4 * ARRAY_SIZE (plt_resolve);
8051 bfd_put_32 (output_bfd,
8052 LIS_12 + PPC_HA (got + 4), p + 0*4);
8053 bfd_put_32 (output_bfd,
8054 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8055 bfd_put_32 (output_bfd,
8056 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8057 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8059 bfd_put_32 (output_bfd,
8060 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8061 bfd_put_32 (output_bfd,
8062 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8066 bfd_put_32 (output_bfd,
8067 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8068 bfd_put_32 (output_bfd,
8069 LWZ_12_12 + 4, p + 6*4);
8077 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8078 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8079 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8080 #define TARGET_BIG_NAME "elf32-powerpc"
8081 #define ELF_ARCH bfd_arch_powerpc
8082 #define ELF_MACHINE_CODE EM_PPC
8083 #ifdef __QNXTARGET__
8084 #define ELF_MAXPAGESIZE 0x1000
8086 #define ELF_MAXPAGESIZE 0x10000
8088 #define ELF_MINPAGESIZE 0x1000
8089 #define ELF_COMMONPAGESIZE 0x1000
8090 #define elf_info_to_howto ppc_elf_info_to_howto
8092 #ifdef EM_CYGNUS_POWERPC
8093 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8097 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8100 #define elf_backend_plt_not_loaded 1
8101 #define elf_backend_can_gc_sections 1
8102 #define elf_backend_can_refcount 1
8103 #define elf_backend_rela_normal 1
8105 #define bfd_elf32_mkobject ppc_elf_mkobject
8106 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8107 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8108 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8109 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8110 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8111 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8112 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8114 #define elf_backend_object_p ppc_elf_object_p
8115 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8116 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8117 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8118 #define elf_backend_relocate_section ppc_elf_relocate_section
8119 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8120 #define elf_backend_check_relocs ppc_elf_check_relocs
8121 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8122 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8123 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8124 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8125 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8126 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8127 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8128 #define elf_backend_fake_sections ppc_elf_fake_sections
8129 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8130 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8131 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8132 #define elf_backend_write_core_note ppc_elf_write_core_note
8133 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8134 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8135 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8136 #define elf_backend_write_section ppc_elf_write_section
8137 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8138 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8139 #define elf_backend_action_discarded ppc_elf_action_discarded
8140 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8142 #include "elf32-target.h"
8144 /* VxWorks Target */
8146 #undef TARGET_LITTLE_SYM
8147 #undef TARGET_LITTLE_NAME
8149 #undef TARGET_BIG_SYM
8150 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8151 #undef TARGET_BIG_NAME
8152 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8154 /* VxWorks uses the elf default section flags for .plt. */
8155 static const struct bfd_elf_special_section *
8156 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
8158 if (sec->name == NULL)
8161 if (strcmp (sec->name, ".plt") == 0)
8162 return _bfd_elf_get_sec_type_attr (abfd, sec);
8164 return ppc_elf_get_sec_type_attr (abfd, sec);
8167 /* Like ppc_elf_link_hash_table_create, but overrides
8168 appropriately for VxWorks. */
8169 static struct bfd_link_hash_table *
8170 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8172 struct bfd_link_hash_table *ret;
8174 ret = ppc_elf_link_hash_table_create (abfd);
8177 struct ppc_elf_link_hash_table *htab
8178 = (struct ppc_elf_link_hash_table *)ret;
8179 htab->is_vxworks = 1;
8180 htab->plt_type = PLT_VXWORKS;
8181 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8182 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8183 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8188 /* Tweak magic VxWorks symbols as they are loaded. */
8190 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8191 struct bfd_link_info *info,
8192 Elf_Internal_Sym *sym,
8193 const char **namep ATTRIBUTE_UNUSED,
8194 flagword *flagsp ATTRIBUTE_UNUSED,
8198 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8202 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8206 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8208 ppc_elf_final_write_processing(abfd, linker);
8209 elf_vxworks_final_write_processing(abfd, linker);
8212 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8214 #undef elf_backend_want_plt_sym
8215 #define elf_backend_want_plt_sym 1
8216 #undef elf_backend_want_got_plt
8217 #define elf_backend_want_got_plt 1
8218 #undef elf_backend_got_symbol_offset
8219 #define elf_backend_got_symbol_offset 0
8220 #undef elf_backend_plt_not_loaded
8221 #define elf_backend_plt_not_loaded 0
8222 #undef elf_backend_plt_readonly
8223 #define elf_backend_plt_readonly 1
8224 #undef elf_backend_got_header_size
8225 #define elf_backend_got_header_size 12
8227 #undef bfd_elf32_get_synthetic_symtab
8229 #undef bfd_elf32_bfd_link_hash_table_create
8230 #define bfd_elf32_bfd_link_hash_table_create \
8231 ppc_elf_vxworks_link_hash_table_create
8232 #undef elf_backend_add_symbol_hook
8233 #define elf_backend_add_symbol_hook \
8234 ppc_elf_vxworks_add_symbol_hook
8235 #undef elf_backend_link_output_symbol_hook
8236 #define elf_backend_link_output_symbol_hook \
8237 elf_vxworks_link_output_symbol_hook
8238 #undef elf_backend_final_write_processing
8239 #define elf_backend_final_write_processing \
8240 ppc_elf_vxworks_final_write_processing
8241 #undef elf_backend_get_sec_type_attr
8242 #define elf_backend_get_sec_type_attr \
8243 ppc_elf_vxworks_get_sec_type_attr
8244 #undef elf_backend_emit_relocs
8245 #define elf_backend_emit_relocs \
8246 elf_vxworks_emit_relocs
8249 #define elf32_bed ppc_elf_vxworks_bed
8251 #include "elf32-target.h"
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