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, 2009 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 relocs 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 */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
775 FALSE, /* pc_relative */
777 complain_overflow_dont, /* complain_on_overflow */
778 bfd_elf_generic_reloc, /* special_function */
779 "R_PPC_TLSGD", /* name */
780 FALSE, /* partial_inplace */
783 FALSE), /* pcrel_offset */
787 2, /* size (0 = byte, 1 = short, 2 = long) */
789 FALSE, /* pc_relative */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC_TLSLD", /* name */
794 FALSE, /* partial_inplace */
797 FALSE), /* pcrel_offset */
799 /* Computes the load module index of the load module that contains the
800 definition of its TLS sym. */
801 HOWTO (R_PPC_DTPMOD32,
803 2, /* size (0 = byte, 1 = short, 2 = long) */
805 FALSE, /* pc_relative */
807 complain_overflow_dont, /* complain_on_overflow */
808 ppc_elf_unhandled_reloc, /* special_function */
809 "R_PPC_DTPMOD32", /* name */
810 FALSE, /* partial_inplace */
812 0xffffffff, /* dst_mask */
813 FALSE), /* pcrel_offset */
815 /* Computes a dtv-relative displacement, the difference between the value
816 of sym+add and the base address of the thread-local storage block that
817 contains the definition of sym, minus 0x8000. */
818 HOWTO (R_PPC_DTPREL32,
820 2, /* size (0 = byte, 1 = short, 2 = long) */
822 FALSE, /* pc_relative */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPREL32", /* name */
827 FALSE, /* partial_inplace */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
832 /* A 16 bit dtprel reloc. */
833 HOWTO (R_PPC_DTPREL16,
835 1, /* size (0 = byte, 1 = short, 2 = long) */
837 FALSE, /* pc_relative */
839 complain_overflow_signed, /* complain_on_overflow */
840 ppc_elf_unhandled_reloc, /* special_function */
841 "R_PPC_DTPREL16", /* name */
842 FALSE, /* partial_inplace */
844 0xffff, /* dst_mask */
845 FALSE), /* pcrel_offset */
847 /* Like DTPREL16, but no overflow. */
848 HOWTO (R_PPC_DTPREL16_LO,
850 1, /* size (0 = byte, 1 = short, 2 = long) */
852 FALSE, /* pc_relative */
854 complain_overflow_dont, /* complain_on_overflow */
855 ppc_elf_unhandled_reloc, /* special_function */
856 "R_PPC_DTPREL16_LO", /* name */
857 FALSE, /* partial_inplace */
859 0xffff, /* dst_mask */
860 FALSE), /* pcrel_offset */
862 /* Like DTPREL16_LO, but next higher group of 16 bits. */
863 HOWTO (R_PPC_DTPREL16_HI,
865 1, /* size (0 = byte, 1 = short, 2 = long) */
867 FALSE, /* pc_relative */
869 complain_overflow_dont, /* complain_on_overflow */
870 ppc_elf_unhandled_reloc, /* special_function */
871 "R_PPC_DTPREL16_HI", /* name */
872 FALSE, /* partial_inplace */
874 0xffff, /* dst_mask */
875 FALSE), /* pcrel_offset */
877 /* Like DTPREL16_HI, but adjust for low 16 bits. */
878 HOWTO (R_PPC_DTPREL16_HA,
880 1, /* size (0 = byte, 1 = short, 2 = long) */
882 FALSE, /* pc_relative */
884 complain_overflow_dont, /* complain_on_overflow */
885 ppc_elf_unhandled_reloc, /* special_function */
886 "R_PPC_DTPREL16_HA", /* name */
887 FALSE, /* partial_inplace */
889 0xffff, /* dst_mask */
890 FALSE), /* pcrel_offset */
892 /* Computes a tp-relative displacement, the difference between the value of
893 sym+add and the value of the thread pointer (r13). */
894 HOWTO (R_PPC_TPREL32,
896 2, /* size (0 = byte, 1 = short, 2 = long) */
898 FALSE, /* pc_relative */
900 complain_overflow_dont, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_TPREL32", /* name */
903 FALSE, /* partial_inplace */
905 0xffffffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
908 /* A 16 bit tprel reloc. */
909 HOWTO (R_PPC_TPREL16,
911 1, /* size (0 = byte, 1 = short, 2 = long) */
913 FALSE, /* pc_relative */
915 complain_overflow_signed, /* complain_on_overflow */
916 ppc_elf_unhandled_reloc, /* special_function */
917 "R_PPC_TPREL16", /* name */
918 FALSE, /* partial_inplace */
920 0xffff, /* dst_mask */
921 FALSE), /* pcrel_offset */
923 /* Like TPREL16, but no overflow. */
924 HOWTO (R_PPC_TPREL16_LO,
926 1, /* size (0 = byte, 1 = short, 2 = long) */
928 FALSE, /* pc_relative */
930 complain_overflow_dont, /* complain_on_overflow */
931 ppc_elf_unhandled_reloc, /* special_function */
932 "R_PPC_TPREL16_LO", /* name */
933 FALSE, /* partial_inplace */
935 0xffff, /* dst_mask */
936 FALSE), /* pcrel_offset */
938 /* Like TPREL16_LO, but next higher group of 16 bits. */
939 HOWTO (R_PPC_TPREL16_HI,
941 1, /* size (0 = byte, 1 = short, 2 = long) */
943 FALSE, /* pc_relative */
945 complain_overflow_dont, /* complain_on_overflow */
946 ppc_elf_unhandled_reloc, /* special_function */
947 "R_PPC_TPREL16_HI", /* name */
948 FALSE, /* partial_inplace */
950 0xffff, /* dst_mask */
951 FALSE), /* pcrel_offset */
953 /* Like TPREL16_HI, but adjust for low 16 bits. */
954 HOWTO (R_PPC_TPREL16_HA,
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE, /* pc_relative */
960 complain_overflow_dont, /* complain_on_overflow */
961 ppc_elf_unhandled_reloc, /* special_function */
962 "R_PPC_TPREL16_HA", /* name */
963 FALSE, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
968 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
969 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
970 to the first entry. */
971 HOWTO (R_PPC_GOT_TLSGD16,
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_signed, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_GOT_TLSGD16", /* name */
980 FALSE, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* Like GOT_TLSGD16, but no overflow. */
986 HOWTO (R_PPC_GOT_TLSGD16_LO,
988 1, /* size (0 = byte, 1 = short, 2 = long) */
990 FALSE, /* pc_relative */
992 complain_overflow_dont, /* complain_on_overflow */
993 ppc_elf_unhandled_reloc, /* special_function */
994 "R_PPC_GOT_TLSGD16_LO", /* name */
995 FALSE, /* partial_inplace */
997 0xffff, /* dst_mask */
998 FALSE), /* pcrel_offset */
1000 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1001 HOWTO (R_PPC_GOT_TLSGD16_HI,
1002 16, /* rightshift */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1005 FALSE, /* pc_relative */
1007 complain_overflow_dont, /* complain_on_overflow */
1008 ppc_elf_unhandled_reloc, /* special_function */
1009 "R_PPC_GOT_TLSGD16_HI", /* name */
1010 FALSE, /* partial_inplace */
1012 0xffff, /* dst_mask */
1013 FALSE), /* pcrel_offset */
1015 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1016 HOWTO (R_PPC_GOT_TLSGD16_HA,
1017 16, /* rightshift */
1018 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 FALSE, /* pc_relative */
1022 complain_overflow_dont, /* complain_on_overflow */
1023 ppc_elf_unhandled_reloc, /* special_function */
1024 "R_PPC_GOT_TLSGD16_HA", /* name */
1025 FALSE, /* partial_inplace */
1027 0xffff, /* dst_mask */
1028 FALSE), /* pcrel_offset */
1030 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1031 with values (sym+add)@dtpmod and zero, and computes the offset to the
1033 HOWTO (R_PPC_GOT_TLSLD16,
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 FALSE, /* pc_relative */
1039 complain_overflow_signed, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSLD16", /* name */
1042 FALSE, /* partial_inplace */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1047 /* Like GOT_TLSLD16, but no overflow. */
1048 HOWTO (R_PPC_GOT_TLSLD16_LO,
1050 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 FALSE, /* pc_relative */
1054 complain_overflow_dont, /* complain_on_overflow */
1055 ppc_elf_unhandled_reloc, /* special_function */
1056 "R_PPC_GOT_TLSLD16_LO", /* name */
1057 FALSE, /* partial_inplace */
1059 0xffff, /* dst_mask */
1060 FALSE), /* pcrel_offset */
1062 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1063 HOWTO (R_PPC_GOT_TLSLD16_HI,
1064 16, /* rightshift */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 FALSE, /* pc_relative */
1069 complain_overflow_dont, /* complain_on_overflow */
1070 ppc_elf_unhandled_reloc, /* special_function */
1071 "R_PPC_GOT_TLSLD16_HI", /* name */
1072 FALSE, /* partial_inplace */
1074 0xffff, /* dst_mask */
1075 FALSE), /* pcrel_offset */
1077 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1078 HOWTO (R_PPC_GOT_TLSLD16_HA,
1079 16, /* rightshift */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 FALSE, /* pc_relative */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 ppc_elf_unhandled_reloc, /* special_function */
1086 "R_PPC_GOT_TLSLD16_HA", /* name */
1087 FALSE, /* partial_inplace */
1089 0xffff, /* dst_mask */
1090 FALSE), /* pcrel_offset */
1092 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1093 the offset to the entry. */
1094 HOWTO (R_PPC_GOT_DTPREL16,
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE, /* pc_relative */
1100 complain_overflow_signed, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_DTPREL16", /* name */
1103 FALSE, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1108 /* Like GOT_DTPREL16, but no overflow. */
1109 HOWTO (R_PPC_GOT_DTPREL16_LO,
1111 1, /* size (0 = byte, 1 = short, 2 = long) */
1113 FALSE, /* pc_relative */
1115 complain_overflow_dont, /* complain_on_overflow */
1116 ppc_elf_unhandled_reloc, /* special_function */
1117 "R_PPC_GOT_DTPREL16_LO", /* name */
1118 FALSE, /* partial_inplace */
1120 0xffff, /* dst_mask */
1121 FALSE), /* pcrel_offset */
1123 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1124 HOWTO (R_PPC_GOT_DTPREL16_HI,
1125 16, /* rightshift */
1126 1, /* size (0 = byte, 1 = short, 2 = long) */
1128 FALSE, /* pc_relative */
1130 complain_overflow_dont, /* complain_on_overflow */
1131 ppc_elf_unhandled_reloc, /* special_function */
1132 "R_PPC_GOT_DTPREL16_HI", /* name */
1133 FALSE, /* partial_inplace */
1135 0xffff, /* dst_mask */
1136 FALSE), /* pcrel_offset */
1138 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1139 HOWTO (R_PPC_GOT_DTPREL16_HA,
1140 16, /* rightshift */
1141 1, /* size (0 = byte, 1 = short, 2 = long) */
1143 FALSE, /* pc_relative */
1145 complain_overflow_dont, /* complain_on_overflow */
1146 ppc_elf_unhandled_reloc, /* special_function */
1147 "R_PPC_GOT_DTPREL16_HA", /* name */
1148 FALSE, /* partial_inplace */
1150 0xffff, /* dst_mask */
1151 FALSE), /* pcrel_offset */
1153 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1154 offset to the entry. */
1155 HOWTO (R_PPC_GOT_TPREL16,
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 FALSE, /* pc_relative */
1161 complain_overflow_signed, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_TPREL16", /* name */
1164 FALSE, /* partial_inplace */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1169 /* Like GOT_TPREL16, but no overflow. */
1170 HOWTO (R_PPC_GOT_TPREL16_LO,
1172 1, /* size (0 = byte, 1 = short, 2 = long) */
1174 FALSE, /* pc_relative */
1176 complain_overflow_dont, /* complain_on_overflow */
1177 ppc_elf_unhandled_reloc, /* special_function */
1178 "R_PPC_GOT_TPREL16_LO", /* name */
1179 FALSE, /* partial_inplace */
1181 0xffff, /* dst_mask */
1182 FALSE), /* pcrel_offset */
1184 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1185 HOWTO (R_PPC_GOT_TPREL16_HI,
1186 16, /* rightshift */
1187 1, /* size (0 = byte, 1 = short, 2 = long) */
1189 FALSE, /* pc_relative */
1191 complain_overflow_dont, /* complain_on_overflow */
1192 ppc_elf_unhandled_reloc, /* special_function */
1193 "R_PPC_GOT_TPREL16_HI", /* name */
1194 FALSE, /* partial_inplace */
1196 0xffff, /* dst_mask */
1197 FALSE), /* pcrel_offset */
1199 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1200 HOWTO (R_PPC_GOT_TPREL16_HA,
1201 16, /* rightshift */
1202 1, /* size (0 = byte, 1 = short, 2 = long) */
1204 FALSE, /* pc_relative */
1206 complain_overflow_dont, /* complain_on_overflow */
1207 ppc_elf_unhandled_reloc, /* special_function */
1208 "R_PPC_GOT_TPREL16_HA", /* name */
1209 FALSE, /* partial_inplace */
1211 0xffff, /* dst_mask */
1212 FALSE), /* pcrel_offset */
1214 /* The remaining relocs are from the Embedded ELF ABI, and are not
1215 in the SVR4 ELF ABI. */
1217 /* 32 bit value resulting from the addend minus the symbol. */
1218 HOWTO (R_PPC_EMB_NADDR32, /* type */
1220 2, /* size (0 = byte, 1 = short, 2 = long) */
1222 FALSE, /* pc_relative */
1224 complain_overflow_bitfield, /* complain_on_overflow */
1225 bfd_elf_generic_reloc, /* special_function */
1226 "R_PPC_EMB_NADDR32", /* name */
1227 FALSE, /* partial_inplace */
1229 0xffffffff, /* dst_mask */
1230 FALSE), /* pcrel_offset */
1232 /* 16 bit value resulting from the addend minus the symbol. */
1233 HOWTO (R_PPC_EMB_NADDR16, /* type */
1235 1, /* size (0 = byte, 1 = short, 2 = long) */
1237 FALSE, /* pc_relative */
1239 complain_overflow_bitfield, /* complain_on_overflow */
1240 bfd_elf_generic_reloc, /* special_function */
1241 "R_PPC_EMB_NADDR16", /* name */
1242 FALSE, /* partial_inplace */
1244 0xffff, /* dst_mask */
1245 FALSE), /* pcrel_offset */
1247 /* 16 bit value resulting from the addend minus the symbol. */
1248 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 FALSE, /* pc_relative */
1254 complain_overflow_dont,/* complain_on_overflow */
1255 bfd_elf_generic_reloc, /* special_function */
1256 "R_PPC_EMB_ADDR16_LO", /* name */
1257 FALSE, /* partial_inplace */
1259 0xffff, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1262 /* The high order 16 bits of the addend minus the symbol. */
1263 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1264 16, /* rightshift */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE, /* pc_relative */
1269 complain_overflow_dont, /* complain_on_overflow */
1270 bfd_elf_generic_reloc, /* special_function */
1271 "R_PPC_EMB_NADDR16_HI", /* name */
1272 FALSE, /* partial_inplace */
1274 0xffff, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1277 /* The high order 16 bits of the result of the addend minus the address,
1278 plus 1 if the contents of the low 16 bits, treated as a signed number,
1280 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE, /* pc_relative */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 ppc_elf_addr16_ha_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HA", /* name */
1289 FALSE, /* partial_inplace */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1294 /* 16 bit value resulting from allocating a 4 byte word to hold an
1295 address in the .sdata section, and returning the offset from
1296 _SDA_BASE_ for that relocation. */
1297 HOWTO (R_PPC_EMB_SDAI16, /* type */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_bitfield, /* complain_on_overflow */
1304 bfd_elf_generic_reloc, /* special_function */
1305 "R_PPC_EMB_SDAI16", /* name */
1306 FALSE, /* partial_inplace */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata2 section, and returning the offset from
1313 _SDA2_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1318 FALSE, /* pc_relative */
1320 complain_overflow_bitfield, /* complain_on_overflow */
1321 bfd_elf_generic_reloc, /* special_function */
1322 "R_PPC_EMB_SDA2I16", /* name */
1323 FALSE, /* partial_inplace */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1328 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1329 small data items. */
1330 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 FALSE, /* pc_relative */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 bfd_elf_generic_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2REL", /* name */
1339 FALSE, /* partial_inplace */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1344 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1345 signed offset from the appropriate base, and filling in the register
1346 field with the appropriate register (0, 2, or 13). */
1347 HOWTO (R_PPC_EMB_SDA21, /* type */
1349 2, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE, /* pc_relative */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 bfd_elf_generic_reloc, /* special_function */
1355 "R_PPC_EMB_SDA21", /* name */
1356 FALSE, /* partial_inplace */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1361 /* Relocation not handled: R_PPC_EMB_MRKREF */
1362 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1363 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1364 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1365 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1366 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1368 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1369 in the 16 bit signed offset from the appropriate base, and filling in the
1370 register field with the appropriate register (0, 2, or 13). */
1371 HOWTO (R_PPC_EMB_RELSDA, /* type */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 TRUE, /* pc_relative */
1377 complain_overflow_signed, /* complain_on_overflow */
1378 bfd_elf_generic_reloc, /* special_function */
1379 "R_PPC_EMB_RELSDA", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 HOWTO (R_PPC_IRELATIVE, /* type */
1387 2, /* size (0 = byte, 1 = short, 2 = long) */
1389 FALSE, /* pc_relative */
1391 complain_overflow_bitfield, /* complain_on_overflow */
1392 bfd_elf_generic_reloc, /* special_function */
1393 "R_PPC_IRELATIVE", /* name */
1394 FALSE, /* partial_inplace */
1396 0xffffffff, /* dst_mask */
1397 FALSE), /* pcrel_offset */
1399 /* A 16 bit relative relocation. */
1400 HOWTO (R_PPC_REL16, /* type */
1402 1, /* size (0 = byte, 1 = short, 2 = long) */
1404 TRUE, /* pc_relative */
1406 complain_overflow_bitfield, /* complain_on_overflow */
1407 bfd_elf_generic_reloc, /* special_function */
1408 "R_PPC_REL16", /* name */
1409 FALSE, /* partial_inplace */
1411 0xffff, /* dst_mask */
1412 TRUE), /* pcrel_offset */
1414 /* A 16 bit relative relocation without overflow. */
1415 HOWTO (R_PPC_REL16_LO, /* type */
1417 1, /* size (0 = byte, 1 = short, 2 = long) */
1419 TRUE, /* pc_relative */
1421 complain_overflow_dont,/* complain_on_overflow */
1422 bfd_elf_generic_reloc, /* special_function */
1423 "R_PPC_REL16_LO", /* name */
1424 FALSE, /* partial_inplace */
1426 0xffff, /* dst_mask */
1427 TRUE), /* pcrel_offset */
1429 /* The high order 16 bits of a relative address. */
1430 HOWTO (R_PPC_REL16_HI, /* type */
1431 16, /* rightshift */
1432 1, /* size (0 = byte, 1 = short, 2 = long) */
1434 TRUE, /* pc_relative */
1436 complain_overflow_dont, /* complain_on_overflow */
1437 bfd_elf_generic_reloc, /* special_function */
1438 "R_PPC_REL16_HI", /* name */
1439 FALSE, /* partial_inplace */
1441 0xffff, /* dst_mask */
1442 TRUE), /* pcrel_offset */
1444 /* The high order 16 bits of a relative address, plus 1 if the contents of
1445 the low 16 bits, treated as a signed number, is negative. */
1446 HOWTO (R_PPC_REL16_HA, /* type */
1447 16, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 TRUE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc_elf_addr16_ha_reloc, /* special_function */
1454 "R_PPC_REL16_HA", /* name */
1455 FALSE, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 TRUE), /* pcrel_offset */
1460 /* GNU extension to record C++ vtable hierarchy. */
1461 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1463 0, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_dont, /* complain_on_overflow */
1468 NULL, /* special_function */
1469 "R_PPC_GNU_VTINHERIT", /* name */
1470 FALSE, /* partial_inplace */
1473 FALSE), /* pcrel_offset */
1475 /* GNU extension to record C++ vtable member usage. */
1476 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1478 0, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE, /* pc_relative */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 NULL, /* special_function */
1484 "R_PPC_GNU_VTENTRY", /* name */
1485 FALSE, /* partial_inplace */
1488 FALSE), /* pcrel_offset */
1490 /* Phony reloc to handle AIX style TOC entries. */
1491 HOWTO (R_PPC_TOC16, /* type */
1493 1, /* size (0 = byte, 1 = short, 2 = long) */
1495 FALSE, /* pc_relative */
1497 complain_overflow_signed, /* complain_on_overflow */
1498 bfd_elf_generic_reloc, /* special_function */
1499 "R_PPC_TOC16", /* name */
1500 FALSE, /* partial_inplace */
1502 0xffff, /* dst_mask */
1503 FALSE), /* pcrel_offset */
1506 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1509 ppc_elf_howto_init (void)
1511 unsigned int i, type;
1514 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1517 type = ppc_elf_howto_raw[i].type;
1518 if (type >= (sizeof (ppc_elf_howto_table)
1519 / sizeof (ppc_elf_howto_table[0])))
1521 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1525 static reloc_howto_type *
1526 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1527 bfd_reloc_code_real_type code)
1529 enum elf_ppc_reloc_type r;
1531 /* Initialize howto table if not already done. */
1532 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1533 ppc_elf_howto_init ();
1540 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1541 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1542 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1543 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1544 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1545 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1546 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1547 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1548 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1549 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1550 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1551 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1552 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1553 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1554 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1555 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1556 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1557 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1558 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1559 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1560 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1561 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1562 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1563 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1564 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1565 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1566 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1567 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1568 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1569 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1570 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1571 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1572 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1573 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1574 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1575 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1576 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1577 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1578 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1579 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1580 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1581 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1582 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1583 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1584 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1585 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1586 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1587 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1588 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1589 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1590 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1591 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1592 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1593 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1594 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1595 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1596 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1597 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1598 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1599 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1600 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1601 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1602 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1603 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1604 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1605 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1606 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1607 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1608 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1609 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1610 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1611 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1612 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1613 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1614 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1615 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1616 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1617 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1618 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1619 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1620 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1621 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1622 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1623 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1624 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1625 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1626 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1629 return ppc_elf_howto_table[r];
1632 static reloc_howto_type *
1633 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1639 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1641 if (ppc_elf_howto_raw[i].name != NULL
1642 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1643 return &ppc_elf_howto_raw[i];
1648 /* Set the howto pointer for a PowerPC ELF reloc. */
1651 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1653 Elf_Internal_Rela *dst)
1655 /* Initialize howto table if not already done. */
1656 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1657 ppc_elf_howto_init ();
1659 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1660 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1662 /* Just because the above assert didn't trigger doesn't mean that
1663 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1664 if (!cache_ptr->howto)
1666 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1667 abfd, ELF32_R_TYPE (dst->r_info));
1668 bfd_set_error (bfd_error_bad_value);
1670 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1674 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1676 static bfd_reloc_status_type
1677 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1678 arelent *reloc_entry,
1680 void *data ATTRIBUTE_UNUSED,
1681 asection *input_section,
1683 char **error_message ATTRIBUTE_UNUSED)
1687 if (output_bfd != NULL)
1689 reloc_entry->address += input_section->output_offset;
1690 return bfd_reloc_ok;
1693 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1694 return bfd_reloc_outofrange;
1696 if (bfd_is_com_section (symbol->section))
1699 relocation = symbol->value;
1701 relocation += symbol->section->output_section->vma;
1702 relocation += symbol->section->output_offset;
1703 relocation += reloc_entry->addend;
1704 if (reloc_entry->howto->pc_relative)
1705 relocation -= reloc_entry->address;
1707 reloc_entry->addend += (relocation & 0x8000) << 1;
1709 return bfd_reloc_continue;
1712 static bfd_reloc_status_type
1713 ppc_elf_unhandled_reloc (bfd *abfd,
1714 arelent *reloc_entry,
1717 asection *input_section,
1719 char **error_message)
1721 /* If this is a relocatable link (output_bfd test tells us), just
1722 call the generic function. Any adjustment will be done at final
1724 if (output_bfd != NULL)
1725 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1726 input_section, output_bfd, error_message);
1728 if (error_message != NULL)
1730 static char buf[60];
1731 sprintf (buf, _("generic linker can't handle %s"),
1732 reloc_entry->howto->name);
1733 *error_message = buf;
1735 return bfd_reloc_dangerous;
1738 /* Sections created by the linker. */
1740 typedef struct elf_linker_section
1742 /* Pointer to the bfd section. */
1746 /* Associated bss section name. */
1747 const char *bss_name;
1748 /* Associated symbol name. */
1749 const char *sym_name;
1750 /* Associated symbol. */
1751 struct elf_link_hash_entry *sym;
1752 } elf_linker_section_t;
1754 /* Linked list of allocated pointer entries. This hangs off of the
1755 symbol lists, and provides allows us to return different pointers,
1756 based on different addend's. */
1758 typedef struct elf_linker_section_pointers
1760 /* next allocated pointer for this symbol */
1761 struct elf_linker_section_pointers *next;
1762 /* offset of pointer from beginning of section */
1766 /* which linker section this is */
1767 elf_linker_section_t *lsect;
1768 } elf_linker_section_pointers_t;
1770 struct ppc_elf_obj_tdata
1772 struct elf_obj_tdata elf;
1774 /* A mapping from local symbols to offsets into the various linker
1775 sections added. This is index by the symbol index. */
1776 elf_linker_section_pointers_t **linker_section_pointers;
1778 /* Flags used to auto-detect plt type. */
1779 unsigned int makes_plt_call : 1;
1780 unsigned int has_rel16 : 1;
1783 #define ppc_elf_tdata(bfd) \
1784 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1786 #define elf_local_ptr_offsets(bfd) \
1787 (ppc_elf_tdata (bfd)->linker_section_pointers)
1789 #define is_ppc_elf(bfd) \
1790 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1791 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1793 /* Override the generic function because we store some extras. */
1796 ppc_elf_mkobject (bfd *abfd)
1798 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1802 /* Fix bad default arch selected for a 32 bit input bfd when the
1803 default is 64 bit. */
1806 ppc_elf_object_p (bfd *abfd)
1808 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1810 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1812 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1814 /* Relies on arch after 64 bit default being 32 bit default. */
1815 abfd->arch_info = abfd->arch_info->next;
1816 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1822 /* Function to set whether a module needs the -mrelocatable bit set. */
1825 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1827 BFD_ASSERT (!elf_flags_init (abfd)
1828 || elf_elfheader (abfd)->e_flags == flags);
1830 elf_elfheader (abfd)->e_flags = flags;
1831 elf_flags_init (abfd) = TRUE;
1835 /* Support for core dump NOTE sections. */
1838 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1843 switch (note->descsz)
1848 case 268: /* Linux/PPC. */
1850 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1853 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1862 /* Make a ".reg/999" section. */
1863 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1864 size, note->descpos + offset);
1868 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1870 switch (note->descsz)
1875 case 128: /* Linux/PPC elf_prpsinfo. */
1876 elf_tdata (abfd)->core_program
1877 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1878 elf_tdata (abfd)->core_command
1879 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1882 /* Note that for some reason, a spurious space is tacked
1883 onto the end of the args in some (at least one anyway)
1884 implementations, so strip it off if it exists. */
1887 char *command = elf_tdata (abfd)->core_command;
1888 int n = strlen (command);
1890 if (0 < n && command[n - 1] == ' ')
1891 command[n - 1] = '\0';
1898 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1910 va_start (ap, note_type);
1911 memset (data, 0, 32);
1912 strncpy (data + 32, va_arg (ap, const char *), 16);
1913 strncpy (data + 48, va_arg (ap, const char *), 80);
1915 return elfcore_write_note (abfd, buf, bufsiz,
1916 "CORE", note_type, data, sizeof (data));
1927 va_start (ap, note_type);
1928 memset (data, 0, 72);
1929 pid = va_arg (ap, long);
1930 bfd_put_32 (abfd, pid, data + 24);
1931 cursig = va_arg (ap, int);
1932 bfd_put_16 (abfd, cursig, data + 12);
1933 greg = va_arg (ap, const void *);
1934 memcpy (data + 72, greg, 192);
1935 memset (data + 264, 0, 4);
1937 return elfcore_write_note (abfd, buf, bufsiz,
1938 "CORE", note_type, data, sizeof (data));
1943 /* Return address for Ith PLT stub in section PLT, for relocation REL
1944 or (bfd_vma) -1 if it should not be included. */
1947 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1948 const asection *plt ATTRIBUTE_UNUSED,
1951 return rel->address;
1954 /* Handle a PowerPC specific section when reading an object file. This
1955 is called when bfd_section_from_shdr finds a section with an unknown
1959 ppc_elf_section_from_shdr (bfd *abfd,
1960 Elf_Internal_Shdr *hdr,
1967 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1970 newsect = hdr->bfd_section;
1971 flags = bfd_get_section_flags (abfd, newsect);
1972 if (hdr->sh_flags & SHF_EXCLUDE)
1973 flags |= SEC_EXCLUDE;
1975 if (hdr->sh_type == SHT_ORDERED)
1976 flags |= SEC_SORT_ENTRIES;
1978 bfd_set_section_flags (abfd, newsect, flags);
1982 /* Set up any other section flags and such that may be necessary. */
1985 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1986 Elf_Internal_Shdr *shdr,
1989 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1990 shdr->sh_flags |= SHF_EXCLUDE;
1992 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1993 shdr->sh_type = SHT_ORDERED;
1998 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1999 need to bump up the number of section headers. */
2002 ppc_elf_additional_program_headers (bfd *abfd,
2003 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2008 s = bfd_get_section_by_name (abfd, ".sbss2");
2009 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2012 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2013 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2019 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2020 .PPC.EMB.sbss0 a normal section, and not a bss section so
2021 that the linker doesn't crater when trying to make more than
2024 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2026 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2027 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2028 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2029 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2030 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2031 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2032 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2033 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2034 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2035 { NULL, 0, 0, 0, 0 }
2038 /* This is what we want for new plt/got. */
2039 static struct bfd_elf_special_section ppc_alt_plt =
2040 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2042 static const struct bfd_elf_special_section *
2043 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2045 const struct bfd_elf_special_section *ssect;
2047 /* See if this is one of the special sections. */
2048 if (sec->name == NULL)
2051 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2055 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2056 ssect = &ppc_alt_plt;
2060 return _bfd_elf_get_sec_type_attr (abfd, sec);
2063 /* Very simple linked list structure for recording apuinfo values. */
2064 typedef struct apuinfo_list
2066 struct apuinfo_list *next;
2067 unsigned long value;
2071 static apuinfo_list *head;
2075 apuinfo_list_init (void)
2081 apuinfo_list_add (unsigned long value)
2083 apuinfo_list *entry = head;
2085 while (entry != NULL)
2087 if (entry->value == value)
2089 entry = entry->next;
2092 entry = bfd_malloc (sizeof (* entry));
2096 entry->value = value;
2102 apuinfo_list_length (void)
2104 apuinfo_list *entry;
2105 unsigned long count;
2107 for (entry = head, count = 0;
2109 entry = entry->next)
2115 static inline unsigned long
2116 apuinfo_list_element (unsigned long number)
2118 apuinfo_list * entry;
2122 entry = entry->next)
2125 return entry ? entry->value : 0;
2129 apuinfo_list_finish (void)
2131 apuinfo_list *entry;
2133 for (entry = head; entry;)
2135 apuinfo_list *next = entry->next;
2143 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2144 #define APUINFO_LABEL "APUinfo"
2146 /* Scan the input BFDs and create a linked list of
2147 the APUinfo values that will need to be emitted. */
2150 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2155 unsigned num_input_sections;
2156 bfd_size_type output_section_size;
2158 unsigned num_entries;
2159 unsigned long offset;
2160 unsigned long length;
2161 const char *error_message = NULL;
2163 if (link_info == NULL)
2166 /* Scan the input bfds, looking for apuinfo sections. */
2167 num_input_sections = 0;
2168 output_section_size = 0;
2170 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2172 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2175 ++ num_input_sections;
2176 output_section_size += asec->size;
2180 /* We need at least one input sections
2181 in order to make merging worthwhile. */
2182 if (num_input_sections < 1)
2185 /* Just make sure that the output section exists as well. */
2186 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2190 /* Allocate a buffer for the contents of the input sections. */
2191 buffer = bfd_malloc (output_section_size);
2196 apuinfo_list_init ();
2198 /* Read in the input sections contents. */
2199 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2201 unsigned long datum;
2204 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2208 length = asec->size;
2211 error_message = _("corrupt or empty %s section in %B");
2215 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2216 || (bfd_bread (buffer + offset, length, ibfd) != length))
2218 error_message = _("unable to read in %s section from %B");
2222 /* Process the contents of the section. */
2223 ptr = buffer + offset;
2224 error_message = _("corrupt %s section in %B");
2226 /* Verify the contents of the header. Note - we have to
2227 extract the values this way in order to allow for a
2228 host whose endian-ness is different from the target. */
2229 datum = bfd_get_32 (ibfd, ptr);
2230 if (datum != sizeof APUINFO_LABEL)
2233 datum = bfd_get_32 (ibfd, ptr + 8);
2237 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2240 /* Get the number of bytes used for apuinfo entries. */
2241 datum = bfd_get_32 (ibfd, ptr + 4);
2242 if (datum + 20 != length)
2245 /* Make sure that we do not run off the end of the section. */
2246 if (offset + length > output_section_size)
2249 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2250 for (i = 0; i < datum; i += 4)
2251 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2253 /* Update the offset. */
2257 error_message = NULL;
2259 /* Compute the size of the output section. */
2260 num_entries = apuinfo_list_length ();
2261 output_section_size = 20 + num_entries * 4;
2263 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2265 if (! bfd_set_section_size (abfd, asec, output_section_size))
2267 error_message = _("warning: unable to set size of %s section in %B");
2273 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2276 /* Prevent the output section from accumulating the input sections'
2277 contents. We have already stored this in our linked list structure. */
2280 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2281 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2283 bfd_byte *contents ATTRIBUTE_UNUSED)
2285 return (apuinfo_list_length ()
2286 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2289 /* Finally we can generate the output section. */
2292 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2297 unsigned num_entries;
2298 bfd_size_type length;
2300 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2304 if (apuinfo_list_length () == 0)
2307 length = asec->size;
2311 buffer = bfd_malloc (length);
2314 (*_bfd_error_handler)
2315 (_("failed to allocate space for new APUinfo section."));
2319 /* Create the apuinfo header. */
2320 num_entries = apuinfo_list_length ();
2321 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2322 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2323 bfd_put_32 (abfd, 0x2, buffer + 8);
2324 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2327 for (i = 0; i < num_entries; i++)
2329 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2333 if (length != asec->size)
2334 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2336 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2337 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2341 apuinfo_list_finish ();
2345 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2347 bfd_byte buf[GLINK_ENTRY_SIZE];
2349 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2352 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2353 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2354 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2355 && bfd_get_32 (abfd, buf + 12) == BCTR);
2359 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2361 bfd_vma vma = *(bfd_vma *) ptr;
2362 return ((section->flags & SEC_ALLOC) != 0
2363 && section->vma <= vma
2364 && vma < section->vma + section->size);
2368 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2369 long dynsymcount, asymbol **dynsyms,
2372 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2373 asection *plt, *relplt, *dynamic, *glink;
2374 bfd_vma glink_vma = 0;
2375 bfd_vma resolv_vma = 0;
2386 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2389 if (dynsymcount <= 0)
2392 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2396 plt = bfd_get_section_by_name (abfd, ".plt");
2400 /* Call common code to handle old-style executable PLTs. */
2401 if (elf_section_flags (plt) & SHF_EXECINSTR)
2402 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2403 dynsymcount, dynsyms, ret);
2405 /* If this object was prelinked, the prelinker stored the address
2406 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2407 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2408 if (dynamic != NULL)
2410 bfd_byte *dynbuf, *extdyn, *extdynend;
2412 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2414 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2417 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2418 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2421 extdynend = extdyn + dynamic->size;
2422 for (; extdyn < extdynend; extdyn += extdynsize)
2424 Elf_Internal_Dyn dyn;
2425 (*swap_dyn_in) (abfd, extdyn, &dyn);
2427 if (dyn.d_tag == DT_NULL)
2430 if (dyn.d_tag == DT_PPC_GOT)
2432 unsigned int g_o_t = dyn.d_un.d_val;
2433 asection *got = bfd_get_section_by_name (abfd, ".got");
2435 && bfd_get_section_contents (abfd, got, buf,
2436 g_o_t - got->vma + 4, 4))
2437 glink_vma = bfd_get_32 (abfd, buf);
2444 /* Otherwise we read the first plt entry. */
2447 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2448 glink_vma = bfd_get_32 (abfd, buf);
2454 /* The .glink section usually does not survive the final
2455 link; search for the section (usually .text) where the
2456 glink stubs now reside. */
2457 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2461 /* Determine glink PLT resolver by reading the relative branch
2462 from the first glink stub. */
2463 if (bfd_get_section_contents (abfd, glink, buf,
2464 glink_vma - glink->vma, 4))
2466 unsigned int insn = bfd_get_32 (abfd, buf);
2468 /* The first glink stub may either branch to the resolver ... */
2470 if ((insn & ~0x3fffffc) == 0)
2471 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2473 /* ... or fall through a bunch of NOPs. */
2474 else if ((insn ^ B ^ NOP) == 0)
2476 bfd_get_section_contents (abfd, glink, buf,
2477 glink_vma - glink->vma + i, 4);
2479 if (bfd_get_32 (abfd, buf) != NOP)
2481 resolv_vma = glink_vma + i;
2486 count = relplt->size / sizeof (Elf32_External_Rela);
2487 stub_vma = glink_vma - (bfd_vma) count * 16;
2488 /* If the stubs are those for -shared/-pie then we might have
2489 multiple stubs for each plt entry. If that is the case then
2490 there is no way to associate stubs with their plt entries short
2491 of figuring out the GOT pointer value used in the stub. */
2492 if (!is_nonpic_glink_stub (abfd, glink,
2493 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2496 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2497 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2500 size = count * sizeof (asymbol);
2501 p = relplt->relocation;
2502 for (i = 0; i < count; i++, p++)
2504 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2506 size += sizeof ("+0x") - 1 + 8;
2509 size += sizeof (asymbol) + sizeof ("__glink");
2512 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2514 s = *ret = bfd_malloc (size);
2518 names = (char *) (s + count + 1 + (resolv_vma != 0));
2519 p = relplt->relocation;
2520 for (i = 0; i < count; i++, p++)
2524 *s = **p->sym_ptr_ptr;
2525 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2526 we are defining a symbol, ensure one of them is set. */
2527 if ((s->flags & BSF_LOCAL) == 0)
2528 s->flags |= BSF_GLOBAL;
2529 s->flags |= BSF_SYNTHETIC;
2531 s->value = stub_vma - glink->vma;
2534 len = strlen ((*p->sym_ptr_ptr)->name);
2535 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2539 memcpy (names, "+0x", sizeof ("+0x") - 1);
2540 names += sizeof ("+0x") - 1;
2541 bfd_sprintf_vma (abfd, names, p->addend);
2542 names += strlen (names);
2544 memcpy (names, "@plt", sizeof ("@plt"));
2545 names += sizeof ("@plt");
2550 /* Add a symbol at the start of the glink branch table. */
2551 memset (s, 0, sizeof *s);
2553 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2555 s->value = glink_vma - glink->vma;
2557 memcpy (names, "__glink", sizeof ("__glink"));
2558 names += sizeof ("__glink");
2564 /* Add a symbol for the glink PLT resolver. */
2565 memset (s, 0, sizeof *s);
2567 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2569 s->value = resolv_vma - glink->vma;
2571 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2572 names += sizeof ("__glink_PLTresolve");
2580 /* The following functions are specific to the ELF linker, while
2581 functions above are used generally. They appear in this file more
2582 or less in the order in which they are called. eg.
2583 ppc_elf_check_relocs is called early in the link process,
2584 ppc_elf_finish_dynamic_sections is one of the last functions
2587 /* The PPC linker needs to keep track of the number of relocs that it
2588 decides to copy as dynamic relocs in check_relocs for each symbol.
2589 This is so that it can later discard them if they are found to be
2590 unnecessary. We store the information in a field extending the
2591 regular ELF linker hash table. */
2593 struct ppc_elf_dyn_relocs
2595 struct ppc_elf_dyn_relocs *next;
2597 /* The input section of the reloc. */
2600 /* Total number of relocs copied for the input section. */
2601 bfd_size_type count;
2603 /* Number of pc-relative relocs copied for the input section. */
2604 bfd_size_type pc_count;
2607 /* Track PLT entries needed for a given symbol. We might need more
2608 than one glink entry per symbol when generating a pic binary. */
2611 struct plt_entry *next;
2613 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2614 This field stores the offset into .got2 used to initialise the
2615 GOT pointer reg. It will always be at least 32768. (Current
2616 gcc always uses an offset of 32768, but ld -r will pack .got2
2617 sections together resulting in larger offsets). */
2620 /* The .got2 section. */
2623 /* PLT refcount or offset. */
2626 bfd_signed_vma refcount;
2630 /* .glink stub offset. */
2631 bfd_vma glink_offset;
2634 /* Of those relocs that might be copied as dynamic relocs, this function
2635 selects those that must be copied when linking a shared library,
2636 even when the symbol is local. */
2639 must_be_dyn_reloc (struct bfd_link_info *info,
2640 enum elf_ppc_reloc_type r_type)
2649 case R_PPC_REL14_BRTAKEN:
2650 case R_PPC_REL14_BRNTAKEN:
2656 case R_PPC_TPREL16_LO:
2657 case R_PPC_TPREL16_HI:
2658 case R_PPC_TPREL16_HA:
2659 return !info->executable;
2663 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2664 copying dynamic variables from a shared lib into an app's dynbss
2665 section, and instead use a dynamic relocation to point into the
2667 #define ELIMINATE_COPY_RELOCS 1
2669 /* PPC ELF linker hash entry. */
2671 struct ppc_elf_link_hash_entry
2673 struct elf_link_hash_entry elf;
2675 /* If this symbol is used in the linker created sections, the processor
2676 specific backend uses this field to map the field into the offset
2677 from the beginning of the section. */
2678 elf_linker_section_pointers_t *linker_section_pointer;
2680 /* Track dynamic relocs copied for this symbol. */
2681 struct ppc_elf_dyn_relocs *dyn_relocs;
2683 /* Contexts in which symbol is used in the GOT (or TOC).
2684 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2685 corresponding relocs are encountered during check_relocs.
2686 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2687 indicate the corresponding GOT entry type is not needed. */
2688 #define TLS_GD 1 /* GD reloc. */
2689 #define TLS_LD 2 /* LD reloc. */
2690 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2691 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2692 #define TLS_TLS 16 /* Any TLS reloc. */
2693 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2694 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
2697 /* Nonzero if we have seen a small data relocation referring to this
2699 unsigned char has_sda_refs;
2702 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2704 /* PPC ELF linker hash table. */
2706 struct ppc_elf_link_hash_table
2708 struct elf_link_hash_table elf;
2710 /* Short-cuts to get to dynamic linker sections. */
2722 elf_linker_section_t sdata[2];
2725 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2728 /* The .got.plt section (VxWorks only)*/
2731 /* Shortcut to __tls_get_addr. */
2732 struct elf_link_hash_entry *tls_get_addr;
2734 /* The bfd that forced an old-style PLT. */
2737 /* TLS local dynamic got entry handling. */
2739 bfd_signed_vma refcount;
2743 /* Offset of branch table to PltResolve function in glink. */
2744 bfd_vma glink_pltresolve;
2746 /* Size of reserved GOT entries. */
2747 unsigned int got_header_size;
2748 /* Non-zero if allocating the header left a gap. */
2749 unsigned int got_gap;
2751 /* The type of PLT we have chosen to use. */
2752 enum ppc_elf_plt_type plt_type;
2754 /* Set if we should emit symbols for stubs. */
2755 unsigned int emit_stub_syms:1;
2757 /* True if the target system is VxWorks. */
2758 unsigned int is_vxworks:1;
2760 /* The size of PLT entries. */
2762 /* The distance between adjacent PLT slots. */
2764 /* The size of the first PLT entry. */
2765 int plt_initial_entry_size;
2767 /* Small local sym cache. */
2768 struct sym_cache sym_cache;
2771 /* Get the PPC ELF linker hash table from a link_info structure. */
2773 #define ppc_elf_hash_table(p) \
2774 ((struct ppc_elf_link_hash_table *) (p)->hash)
2776 /* Create an entry in a PPC ELF linker hash table. */
2778 static struct bfd_hash_entry *
2779 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2780 struct bfd_hash_table *table,
2783 /* Allocate the structure if it has not already been allocated by a
2787 entry = bfd_hash_allocate (table,
2788 sizeof (struct ppc_elf_link_hash_entry));
2793 /* Call the allocation method of the superclass. */
2794 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2797 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2798 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2799 ppc_elf_hash_entry (entry)->tls_mask = 0;
2805 /* Create a PPC ELF linker hash table. */
2807 static struct bfd_link_hash_table *
2808 ppc_elf_link_hash_table_create (bfd *abfd)
2810 struct ppc_elf_link_hash_table *ret;
2812 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2816 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2817 ppc_elf_link_hash_newfunc,
2818 sizeof (struct ppc_elf_link_hash_entry)))
2824 ret->elf.init_plt_refcount.refcount = 0;
2825 ret->elf.init_plt_refcount.glist = NULL;
2826 ret->elf.init_plt_offset.offset = 0;
2827 ret->elf.init_plt_offset.glist = NULL;
2829 ret->sdata[0].name = ".sdata";
2830 ret->sdata[0].sym_name = "_SDA_BASE_";
2831 ret->sdata[0].bss_name = ".sbss";
2833 ret->sdata[1].name = ".sdata2";
2834 ret->sdata[1].sym_name = "_SDA2_BASE_";
2835 ret->sdata[1].bss_name = ".sbss2";
2837 ret->plt_entry_size = 12;
2838 ret->plt_slot_size = 8;
2839 ret->plt_initial_entry_size = 72;
2841 return &ret->elf.root;
2844 /* Create .got and the related sections. */
2847 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2849 struct ppc_elf_link_hash_table *htab;
2853 if (!_bfd_elf_create_got_section (abfd, info))
2856 htab = ppc_elf_hash_table (info);
2857 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2861 if (htab->is_vxworks)
2863 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2869 /* The powerpc .got has a blrl instruction in it. Mark it
2871 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2872 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2873 if (!bfd_set_section_flags (abfd, s, flags))
2877 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
2885 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2887 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2891 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2892 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2893 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2896 || !bfd_set_section_alignment (abfd, s, 4))
2899 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2900 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2903 || !bfd_set_section_alignment (abfd, s, 4))
2906 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2907 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2908 s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags);
2911 || ! bfd_set_section_alignment (abfd, s, 2))
2916 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2917 to output sections (just like _bfd_elf_create_dynamic_sections has
2918 to create .dynbss and .rela.bss). */
2921 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2923 struct ppc_elf_link_hash_table *htab;
2927 htab = ppc_elf_hash_table (info);
2929 if (htab->got == NULL
2930 && !ppc_elf_create_got (abfd, info))
2933 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2936 if (htab->glink == NULL
2937 && !ppc_elf_create_glink (abfd, info))
2940 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2941 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2942 SEC_ALLOC | SEC_LINKER_CREATED);
2949 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2950 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2951 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2952 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2955 || ! bfd_set_section_alignment (abfd, s, 2))
2959 if (htab->is_vxworks
2960 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2963 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2964 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2968 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2969 if (htab->plt_type == PLT_VXWORKS)
2970 /* The VxWorks PLT is a loaded section with contents. */
2971 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2972 return bfd_set_section_flags (abfd, s, flags);
2975 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2978 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2979 struct elf_link_hash_entry *dir,
2980 struct elf_link_hash_entry *ind)
2982 struct ppc_elf_link_hash_entry *edir, *eind;
2984 edir = (struct ppc_elf_link_hash_entry *) dir;
2985 eind = (struct ppc_elf_link_hash_entry *) ind;
2987 if (eind->dyn_relocs != NULL)
2989 if (edir->dyn_relocs != NULL)
2991 struct ppc_elf_dyn_relocs **pp;
2992 struct ppc_elf_dyn_relocs *p;
2994 /* Add reloc counts against the indirect sym to the direct sym
2995 list. Merge any entries against the same section. */
2996 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2998 struct ppc_elf_dyn_relocs *q;
3000 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3001 if (q->sec == p->sec)
3003 q->pc_count += p->pc_count;
3004 q->count += p->count;
3011 *pp = edir->dyn_relocs;
3014 edir->dyn_relocs = eind->dyn_relocs;
3015 eind->dyn_relocs = NULL;
3018 edir->tls_mask |= eind->tls_mask;
3019 edir->has_sda_refs |= eind->has_sda_refs;
3021 /* If called to transfer flags for a weakdef during processing
3022 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3023 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3024 if (!(ELIMINATE_COPY_RELOCS
3025 && eind->elf.root.type != bfd_link_hash_indirect
3026 && edir->elf.dynamic_adjusted))
3027 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3029 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3030 edir->elf.ref_regular |= eind->elf.ref_regular;
3031 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3032 edir->elf.needs_plt |= eind->elf.needs_plt;
3033 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3035 /* If we were called to copy over info for a weak sym, that's all. */
3036 if (eind->elf.root.type != bfd_link_hash_indirect)
3039 /* Copy over the GOT refcount entries that we may have already seen to
3040 the symbol which just became indirect. */
3041 edir->elf.got.refcount += eind->elf.got.refcount;
3042 eind->elf.got.refcount = 0;
3044 /* And plt entries. */
3045 if (eind->elf.plt.plist != NULL)
3047 if (edir->elf.plt.plist != NULL)
3049 struct plt_entry **entp;
3050 struct plt_entry *ent;
3052 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3054 struct plt_entry *dent;
3056 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3057 if (dent->sec == ent->sec && dent->addend == ent->addend)
3059 dent->plt.refcount += ent->plt.refcount;
3066 *entp = edir->elf.plt.plist;
3069 edir->elf.plt.plist = eind->elf.plt.plist;
3070 eind->elf.plt.plist = NULL;
3073 if (eind->elf.dynindx != -1)
3075 if (edir->elf.dynindx != -1)
3076 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3077 edir->elf.dynstr_index);
3078 edir->elf.dynindx = eind->elf.dynindx;
3079 edir->elf.dynstr_index = eind->elf.dynstr_index;
3080 eind->elf.dynindx = -1;
3081 eind->elf.dynstr_index = 0;
3085 /* Hook called by the linker routine which adds symbols from an object
3086 file. We use it to put .comm items in .sbss, and not .bss. */
3089 ppc_elf_add_symbol_hook (bfd *abfd,
3090 struct bfd_link_info *info,
3091 Elf_Internal_Sym *sym,
3092 const char **namep ATTRIBUTE_UNUSED,
3093 flagword *flagsp ATTRIBUTE_UNUSED,
3097 if (sym->st_shndx == SHN_COMMON
3098 && !info->relocatable
3099 && is_ppc_elf (info->output_bfd)
3100 && sym->st_size <= elf_gp_size (abfd))
3102 /* Common symbols less than or equal to -G nn bytes are automatically
3104 struct ppc_elf_link_hash_table *htab;
3106 htab = ppc_elf_hash_table (info);
3107 if (htab->sbss == NULL)
3109 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3111 if (!htab->elf.dynobj)
3112 htab->elf.dynobj = abfd;
3114 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3117 if (htab->sbss == NULL)
3122 *valp = sym->st_size;
3125 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3126 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
3132 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3133 elf_linker_section_t *lsect)
3135 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3137 if (lsect->sym == NULL)
3139 if (lsect->sym->root.type == bfd_link_hash_new)
3140 lsect->sym->non_elf = 0;
3141 lsect->sym->ref_regular = 1;
3145 /* Create a special linker section. */
3148 ppc_elf_create_linker_section (bfd *abfd,
3149 struct bfd_link_info *info,
3151 elf_linker_section_t *lsect)
3153 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3156 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3157 | SEC_LINKER_CREATED);
3159 /* Record the first bfd that needs the special sections. */
3160 if (!htab->elf.dynobj)
3161 htab->elf.dynobj = abfd;
3163 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3167 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3171 return create_sdata_sym (htab, lsect);
3174 /* Find a linker generated pointer with a given addend and type. */
3176 static elf_linker_section_pointers_t *
3177 elf_find_pointer_linker_section
3178 (elf_linker_section_pointers_t *linker_pointers,
3180 elf_linker_section_t *lsect)
3182 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3183 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3184 return linker_pointers;
3189 /* Allocate a pointer to live in a linker created section. */
3192 elf_create_pointer_linker_section (bfd *abfd,
3193 elf_linker_section_t *lsect,
3194 struct elf_link_hash_entry *h,
3195 const Elf_Internal_Rela *rel)
3197 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3198 elf_linker_section_pointers_t *linker_section_ptr;
3199 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3202 BFD_ASSERT (lsect != NULL);
3204 /* Is this a global symbol? */
3207 struct ppc_elf_link_hash_entry *eh;
3209 /* Has this symbol already been allocated? If so, our work is done. */
3210 eh = (struct ppc_elf_link_hash_entry *) h;
3211 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3216 ptr_linker_section_ptr = &eh->linker_section_pointer;
3220 BFD_ASSERT (is_ppc_elf (abfd));
3222 /* Allocation of a pointer to a local symbol. */
3223 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3225 /* Allocate a table to hold the local symbols if first time. */
3228 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3231 amt *= sizeof (elf_linker_section_pointers_t *);
3232 ptr = bfd_zalloc (abfd, amt);
3237 elf_local_ptr_offsets (abfd) = ptr;
3240 /* Has this symbol already been allocated? If so, our work is done. */
3241 if (elf_find_pointer_linker_section (ptr[r_symndx],
3246 ptr_linker_section_ptr = &ptr[r_symndx];
3249 /* Allocate space for a pointer in the linker section, and allocate
3250 a new pointer record from internal memory. */
3251 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3252 amt = sizeof (elf_linker_section_pointers_t);
3253 linker_section_ptr = bfd_alloc (abfd, amt);
3255 if (!linker_section_ptr)
3258 linker_section_ptr->next = *ptr_linker_section_ptr;
3259 linker_section_ptr->addend = rel->r_addend;
3260 linker_section_ptr->lsect = lsect;
3261 *ptr_linker_section_ptr = linker_section_ptr;
3263 linker_section_ptr->offset = lsect->section->size;
3264 lsect->section->size += 4;
3268 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3269 lsect->name, (long) linker_section_ptr->offset,
3270 (long) lsect->section->size);
3276 static struct plt_entry **
3277 update_local_sym_info (bfd *abfd,
3278 Elf_Internal_Shdr *symtab_hdr,
3279 unsigned long r_symndx,
3282 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3283 struct plt_entry **local_plt;
3284 char *local_got_tls_masks;
3286 if (local_got_refcounts == NULL)
3288 bfd_size_type size = symtab_hdr->sh_info;
3290 size *= (sizeof (*local_got_refcounts)
3291 + sizeof (*local_plt)
3292 + sizeof (*local_got_tls_masks));
3293 local_got_refcounts = bfd_zalloc (abfd, size);
3294 if (local_got_refcounts == NULL)
3296 elf_local_got_refcounts (abfd) = local_got_refcounts;
3299 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3300 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3301 local_got_tls_masks[r_symndx] |= tls_type;
3302 if (tls_type != PLT_IFUNC)
3303 local_got_refcounts[r_symndx] += 1;
3304 return local_plt + r_symndx;
3308 update_plt_info (bfd *abfd, struct plt_entry **plist,
3309 asection *sec, bfd_vma addend)
3311 struct plt_entry *ent;
3313 for (ent = *plist; ent != NULL; ent = ent->next)
3314 if (ent->sec == sec && ent->addend == addend)
3318 bfd_size_type amt = sizeof (*ent);
3319 ent = bfd_alloc (abfd, amt);
3324 ent->addend = addend;
3325 ent->plt.refcount = 0;
3328 ent->plt.refcount += 1;
3332 static struct plt_entry *
3333 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3335 struct plt_entry *ent;
3339 for (ent = *plist; ent != NULL; ent = ent->next)
3340 if (ent->sec == sec && ent->addend == addend)
3346 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3348 return (r_type == R_PPC_PLTREL24
3349 || r_type == R_PPC_LOCAL24PC
3350 || r_type == R_PPC_REL24
3351 || r_type == R_PPC_REL14
3352 || r_type == R_PPC_REL14_BRTAKEN
3353 || r_type == R_PPC_REL14_BRNTAKEN
3354 || r_type == R_PPC_ADDR24
3355 || r_type == R_PPC_ADDR14
3356 || r_type == R_PPC_ADDR14_BRTAKEN
3357 || r_type == R_PPC_ADDR14_BRNTAKEN);
3361 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3363 (*_bfd_error_handler)
3364 (_("%B: relocation %s cannot be used when making a shared object"),
3366 ppc_elf_howto_table[r_type]->name);
3367 bfd_set_error (bfd_error_bad_value);
3370 /* Look through the relocs for a section during the first phase, and
3371 allocate space in the global offset table or procedure linkage
3375 ppc_elf_check_relocs (bfd *abfd,
3376 struct bfd_link_info *info,
3378 const Elf_Internal_Rela *relocs)
3380 struct ppc_elf_link_hash_table *htab;
3381 Elf_Internal_Shdr *symtab_hdr;
3382 struct elf_link_hash_entry **sym_hashes;
3383 const Elf_Internal_Rela *rel;
3384 const Elf_Internal_Rela *rel_end;
3385 asection *got2, *sreloc;
3386 struct elf_link_hash_entry *tga;
3388 if (info->relocatable)
3391 /* Don't do anything special with non-loaded, non-alloced sections.
3392 In particular, any relocs in such sections should not affect GOT
3393 and PLT reference counting (ie. we don't allow them to create GOT
3394 or PLT entries), there's no possibility or desire to optimize TLS
3395 relocs, and there's not much point in propagating relocs to shared
3396 libs that the dynamic linker won't relocate. */
3397 if ((sec->flags & SEC_ALLOC) == 0)
3401 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3405 BFD_ASSERT (is_ppc_elf (abfd));
3407 /* Initialize howto table if not already done. */
3408 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3409 ppc_elf_howto_init ();
3411 htab = ppc_elf_hash_table (info);
3412 if (htab->glink == NULL)
3414 if (htab->elf.dynobj == NULL)
3415 htab->elf.dynobj = abfd;
3416 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3419 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3420 FALSE, FALSE, TRUE);
3421 symtab_hdr = &elf_symtab_hdr (abfd);
3422 sym_hashes = elf_sym_hashes (abfd);
3423 got2 = bfd_get_section_by_name (abfd, ".got2");
3426 rel_end = relocs + sec->reloc_count;
3427 for (rel = relocs; rel < rel_end; rel++)
3429 unsigned long r_symndx;
3430 enum elf_ppc_reloc_type r_type;
3431 struct elf_link_hash_entry *h;
3433 struct plt_entry **ifunc;
3435 r_symndx = ELF32_R_SYM (rel->r_info);
3436 if (r_symndx < symtab_hdr->sh_info)
3440 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3441 while (h->root.type == bfd_link_hash_indirect
3442 || h->root.type == bfd_link_hash_warning)
3443 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3446 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3447 This shows up in particular in an R_PPC_ADDR32 in the eabi
3450 && htab->got == NULL
3451 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3453 if (htab->elf.dynobj == NULL)
3454 htab->elf.dynobj = abfd;
3455 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3457 BFD_ASSERT (h == htab->elf.hgot);
3462 r_type = ELF32_R_TYPE (rel->r_info);
3463 if (!htab->is_vxworks)
3467 if (h->type == STT_GNU_IFUNC)
3468 ifunc = &h->plt.plist;
3472 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3477 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3479 || is_branch_reloc (r_type)))
3483 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3488 /* STT_GNU_IFUNC symbols must have a PLT entry;
3489 In a non-pie executable even when there are
3492 if (r_type == R_PPC_PLTREL24)
3494 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3496 addend = rel->r_addend;
3498 if (!update_plt_info (abfd, ifunc,
3499 addend < 32768 ? NULL : got2, addend))
3505 if (!htab->is_vxworks
3506 && is_branch_reloc (r_type)
3511 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3512 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3513 /* We have a new-style __tls_get_addr call with a marker
3517 /* Mark this section as having an old-style call. */
3518 sec->has_tls_get_addr_call = 1;
3525 /* These special tls relocs tie a call to __tls_get_addr with
3526 its parameter symbol. */
3529 case R_PPC_GOT_TLSLD16:
3530 case R_PPC_GOT_TLSLD16_LO:
3531 case R_PPC_GOT_TLSLD16_HI:
3532 case R_PPC_GOT_TLSLD16_HA:
3533 tls_type = TLS_TLS | TLS_LD;
3536 case R_PPC_GOT_TLSGD16:
3537 case R_PPC_GOT_TLSGD16_LO:
3538 case R_PPC_GOT_TLSGD16_HI:
3539 case R_PPC_GOT_TLSGD16_HA:
3540 tls_type = TLS_TLS | TLS_GD;
3543 case R_PPC_GOT_TPREL16:
3544 case R_PPC_GOT_TPREL16_LO:
3545 case R_PPC_GOT_TPREL16_HI:
3546 case R_PPC_GOT_TPREL16_HA:
3547 if (!info->executable)
3548 info->flags |= DF_STATIC_TLS;
3549 tls_type = TLS_TLS | TLS_TPREL;
3552 case R_PPC_GOT_DTPREL16:
3553 case R_PPC_GOT_DTPREL16_LO:
3554 case R_PPC_GOT_DTPREL16_HI:
3555 case R_PPC_GOT_DTPREL16_HA:
3556 tls_type = TLS_TLS | TLS_DTPREL;
3558 sec->has_tls_reloc = 1;
3561 /* GOT16 relocations */
3563 case R_PPC_GOT16_LO:
3564 case R_PPC_GOT16_HI:
3565 case R_PPC_GOT16_HA:
3566 /* This symbol requires a global offset table entry. */
3567 if (htab->got == NULL)
3569 if (htab->elf.dynobj == NULL)
3570 htab->elf.dynobj = abfd;
3571 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3576 h->got.refcount += 1;
3577 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3580 /* This is a global offset table entry for a local symbol. */
3581 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3584 /* We may also need a plt entry if the symbol turns out to be
3586 if (h != NULL && !info->shared)
3588 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3593 /* Indirect .sdata relocation. */
3594 case R_PPC_EMB_SDAI16:
3597 bad_shared_reloc (abfd, r_type);
3600 if (htab->sdata[0].section == NULL
3601 && !ppc_elf_create_linker_section (abfd, info, 0,
3604 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3609 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3610 h->non_got_ref = TRUE;
3614 /* Indirect .sdata2 relocation. */
3615 case R_PPC_EMB_SDA2I16:
3618 bad_shared_reloc (abfd, r_type);
3621 if (htab->sdata[1].section == NULL
3622 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3625 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3630 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3631 h->non_got_ref = TRUE;
3635 case R_PPC_SDAREL16:
3638 bad_shared_reloc (abfd, r_type);
3641 if (htab->sdata[0].sym == NULL
3642 && !create_sdata_sym (htab, &htab->sdata[0]))
3646 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3647 h->non_got_ref = TRUE;
3651 case R_PPC_EMB_SDA2REL:
3654 bad_shared_reloc (abfd, r_type);
3657 if (htab->sdata[1].sym == NULL
3658 && !create_sdata_sym (htab, &htab->sdata[1]))
3662 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3663 h->non_got_ref = TRUE;
3667 case R_PPC_EMB_SDA21:
3668 case R_PPC_EMB_RELSDA:
3671 bad_shared_reloc (abfd, r_type);
3674 if (htab->sdata[0].sym == NULL
3675 && !create_sdata_sym (htab, &htab->sdata[0]))
3677 if (htab->sdata[1].sym == NULL
3678 && !create_sdata_sym (htab, &htab->sdata[1]))
3682 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3683 h->non_got_ref = TRUE;
3687 case R_PPC_EMB_NADDR32:
3688 case R_PPC_EMB_NADDR16:
3689 case R_PPC_EMB_NADDR16_LO:
3690 case R_PPC_EMB_NADDR16_HI:
3691 case R_PPC_EMB_NADDR16_HA:
3694 bad_shared_reloc (abfd, r_type);
3698 h->non_got_ref = TRUE;
3701 case R_PPC_PLTREL24:
3706 case R_PPC_PLTREL32:
3707 case R_PPC_PLT16_LO:
3708 case R_PPC_PLT16_HI:
3709 case R_PPC_PLT16_HA:
3711 fprintf (stderr, "Reloc requires a PLT entry\n");
3713 /* This symbol requires a procedure linkage table entry. We
3714 actually build the entry in finish_dynamic_symbol,
3715 because this might be a case of linking PIC code without
3716 linking in any dynamic objects, in which case we don't
3717 need to generate a procedure linkage table after all. */
3721 /* It does not make sense to have a procedure linkage
3722 table entry for a local symbol. */
3723 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3727 (long) rel->r_offset,
3728 ppc_elf_howto_table[r_type]->name);
3729 bfd_set_error (bfd_error_bad_value);
3736 if (r_type == R_PPC_PLTREL24)
3738 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3740 addend = rel->r_addend;
3743 if (!update_plt_info (abfd, &h->plt.plist,
3744 addend < 32768 ? NULL : got2, addend))
3749 /* The following relocations don't need to propagate the
3750 relocation if linking a shared object since they are
3751 section relative. */
3753 case R_PPC_SECTOFF_LO:
3754 case R_PPC_SECTOFF_HI:
3755 case R_PPC_SECTOFF_HA:
3756 case R_PPC_DTPREL16:
3757 case R_PPC_DTPREL16_LO:
3758 case R_PPC_DTPREL16_HI:
3759 case R_PPC_DTPREL16_HA:
3764 case R_PPC_REL16_LO:
3765 case R_PPC_REL16_HI:
3766 case R_PPC_REL16_HA:
3767 ppc_elf_tdata (abfd)->has_rel16 = 1;
3770 /* These are just markers. */
3772 case R_PPC_EMB_MRKREF:
3776 case R_PPC_RELAX32PC:
3777 case R_PPC_RELAX32_PLT:
3778 case R_PPC_RELAX32PC_PLT:
3781 /* These should only appear in dynamic objects. */
3783 case R_PPC_GLOB_DAT:
3784 case R_PPC_JMP_SLOT:
3785 case R_PPC_RELATIVE:
3786 case R_PPC_IRELATIVE:
3789 /* These aren't handled yet. We'll report an error later. */
3791 case R_PPC_EMB_RELSEC16:
3792 case R_PPC_EMB_RELST_LO:
3793 case R_PPC_EMB_RELST_HI:
3794 case R_PPC_EMB_RELST_HA:
3795 case R_PPC_EMB_BIT_FLD:
3798 /* This refers only to functions defined in the shared library. */
3799 case R_PPC_LOCAL24PC:
3800 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3802 htab->plt_type = PLT_OLD;
3803 htab->old_bfd = abfd;
3807 /* This relocation describes the C++ object vtable hierarchy.
3808 Reconstruct it for later use during GC. */
3809 case R_PPC_GNU_VTINHERIT:
3810 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3814 /* This relocation describes which C++ vtable entries are actually
3815 used. Record for later use during GC. */
3816 case R_PPC_GNU_VTENTRY:
3817 BFD_ASSERT (h != NULL);
3819 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3823 /* We shouldn't really be seeing these. */
3826 case R_PPC_TPREL16_LO:
3827 case R_PPC_TPREL16_HI:
3828 case R_PPC_TPREL16_HA:
3829 if (!info->executable)
3830 info->flags |= DF_STATIC_TLS;
3834 case R_PPC_DTPMOD32:
3835 case R_PPC_DTPREL32:
3841 && (sec->flags & SEC_CODE) != 0
3843 && htab->plt_type == PLT_UNSET)
3845 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3846 the start of a function, which assembles to a REL32
3847 reference to .got2. If we detect one of these, then
3848 force the old PLT layout because the linker cannot
3849 reliably deduce the GOT pointer value needed for
3852 Elf_Internal_Sym *isym;
3854 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3859 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3862 htab->plt_type = PLT_OLD;
3863 htab->old_bfd = abfd;
3866 if (h == NULL || h == htab->elf.hgot)
3872 case R_PPC_ADDR16_LO:
3873 case R_PPC_ADDR16_HI:
3874 case R_PPC_ADDR16_HA:
3877 if (h != NULL && !info->shared)
3879 /* We may need a plt entry if the symbol turns out to be
3880 a function defined in a dynamic object. */
3881 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3884 /* We may need a copy reloc too. */
3886 h->pointer_equality_needed = 1;
3892 case R_PPC_REL14_BRTAKEN:
3893 case R_PPC_REL14_BRNTAKEN:
3896 if (h == htab->elf.hgot)
3898 if (htab->plt_type == PLT_UNSET)
3900 htab->plt_type = PLT_OLD;
3901 htab->old_bfd = abfd;
3909 case R_PPC_ADDR14_BRTAKEN:
3910 case R_PPC_ADDR14_BRNTAKEN:
3911 if (h != NULL && !info->shared)
3913 /* We may need a plt entry if the symbol turns out to be
3914 a function defined in a dynamic object. */
3916 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3922 /* If we are creating a shared library, and this is a reloc
3923 against a global symbol, or a non PC relative reloc
3924 against a local symbol, then we need to copy the reloc
3925 into the shared library. However, if we are linking with
3926 -Bsymbolic, we do not need to copy a reloc against a
3927 global symbol which is defined in an object we are
3928 including in the link (i.e., DEF_REGULAR is set). At
3929 this point we have not seen all the input files, so it is
3930 possible that DEF_REGULAR is not set now but will be set
3931 later (it is never cleared). In case of a weak definition,
3932 DEF_REGULAR may be cleared later by a strong definition in
3933 a shared library. We account for that possibility below by
3934 storing information in the dyn_relocs field of the hash
3935 table entry. A similar situation occurs when creating
3936 shared libraries and symbol visibility changes render the
3939 If on the other hand, we are creating an executable, we
3940 may need to keep relocations for symbols satisfied by a
3941 dynamic library if we manage to avoid copy relocs for the
3944 && (must_be_dyn_reloc (info, r_type)
3946 && (! info->symbolic
3947 || h->root.type == bfd_link_hash_defweak
3948 || !h->def_regular))))
3949 || (ELIMINATE_COPY_RELOCS
3952 && (h->root.type == bfd_link_hash_defweak
3953 || !h->def_regular)))
3955 struct ppc_elf_dyn_relocs *p;
3956 struct ppc_elf_dyn_relocs **head;
3960 "ppc_elf_check_relocs needs to "
3961 "create relocation for %s\n",
3962 (h && h->root.root.string
3963 ? h->root.root.string : "<unknown>"));
3967 if (htab->elf.dynobj == NULL)
3968 htab->elf.dynobj = abfd;
3970 sreloc = _bfd_elf_make_dynamic_reloc_section
3971 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3977 /* If this is a global symbol, we count the number of
3978 relocations we need for this symbol. */
3981 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3985 /* Track dynamic relocs needed for local syms too.
3986 We really need local syms available to do this
3990 Elf_Internal_Sym *isym;
3992 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3997 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4001 vpp = &elf_section_data (s)->local_dynrel;
4002 head = (struct ppc_elf_dyn_relocs **) vpp;
4006 if (p == NULL || p->sec != sec)
4008 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4019 if (!must_be_dyn_reloc (info, r_type))
4031 /* Merge object attributes from IBFD into OBFD. Raise an error if
4032 there are conflicting attributes. */
4034 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4036 obj_attribute *in_attr, *in_attrs;
4037 obj_attribute *out_attr, *out_attrs;
4039 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4041 /* This is the first object. Copy the attributes. */
4042 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4044 /* Use the Tag_null value to indicate the attributes have been
4046 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4051 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4052 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4054 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4055 non-conflicting ones. */
4056 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4057 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4058 if (in_attr->i != out_attr->i)
4061 if (out_attr->i == 0)
4062 out_attr->i = in_attr->i;
4063 else if (in_attr->i == 0)
4065 else if (out_attr->i == 1 && in_attr->i == 2)
4067 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4068 else if (out_attr->i == 1 && in_attr->i == 3)
4070 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4072 else if (out_attr->i == 3 && in_attr->i == 1)
4074 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4076 else if (out_attr->i == 3 && in_attr->i == 2)
4078 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4080 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4082 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4083 else if (in_attr->i > 3)
4085 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4089 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4093 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4094 merge non-conflicting ones. */
4095 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4096 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4097 if (in_attr->i != out_attr->i)
4099 const char *in_abi = NULL, *out_abi = NULL;
4103 case 1: in_abi = "generic"; break;
4104 case 2: in_abi = "AltiVec"; break;
4105 case 3: in_abi = "SPE"; break;
4108 switch (out_attr->i)
4110 case 1: out_abi = "generic"; break;
4111 case 2: out_abi = "AltiVec"; break;
4112 case 3: out_abi = "SPE"; break;
4116 if (out_attr->i == 0)
4117 out_attr->i = in_attr->i;
4118 else if (in_attr->i == 0)
4120 /* For now, allow generic to transition to AltiVec or SPE
4121 without a warning. If GCC marked files with their stack
4122 alignment and used don't-care markings for files which are
4123 not affected by the vector ABI, we could warn about this
4125 else if (out_attr->i == 1)
4126 out_attr->i = in_attr->i;
4127 else if (in_attr->i == 1)
4129 else if (in_abi == NULL)
4131 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4133 else if (out_abi == NULL)
4135 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4139 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4140 ibfd, obfd, in_abi, out_abi);
4143 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4144 and merge non-conflicting ones. */
4145 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4146 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4147 if (in_attr->i != out_attr->i)
4150 if (out_attr->i == 0)
4151 out_attr->i = in_attr->i;
4152 else if (in_attr->i == 0)
4154 else if (out_attr->i == 1 && in_attr->i == 2)
4156 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4157 else if (out_attr->i == 2 && in_attr->i == 1)
4159 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4160 else if (in_attr->i > 2)
4162 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4166 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4170 /* Merge Tag_compatibility attributes and any common GNU ones. */
4171 _bfd_elf_merge_object_attributes (ibfd, obfd);
4176 /* Merge backend specific data from an object file to the output
4177 object file when linking. */
4180 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4186 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4189 /* Check if we have the same endianess. */
4190 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4193 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4196 new_flags = elf_elfheader (ibfd)->e_flags;
4197 old_flags = elf_elfheader (obfd)->e_flags;
4198 if (!elf_flags_init (obfd))
4200 /* First call, no flags set. */
4201 elf_flags_init (obfd) = TRUE;
4202 elf_elfheader (obfd)->e_flags = new_flags;
4205 /* Compatible flags are ok. */
4206 else if (new_flags == old_flags)
4209 /* Incompatible flags. */
4212 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4213 to be linked with either. */
4215 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4216 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4219 (*_bfd_error_handler)
4220 (_("%B: compiled with -mrelocatable and linked with "
4221 "modules compiled normally"), ibfd);
4223 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4224 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4227 (*_bfd_error_handler)
4228 (_("%B: compiled normally and linked with "
4229 "modules compiled with -mrelocatable"), ibfd);
4232 /* The output is -mrelocatable-lib iff both the input files are. */
4233 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4234 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4236 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4237 but each input file is either -mrelocatable or -mrelocatable-lib. */
4238 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4239 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4240 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4241 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4243 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4244 any module uses it. */
4245 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4247 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4248 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4250 /* Warn about any other mismatches. */
4251 if (new_flags != old_flags)
4254 (*_bfd_error_handler)
4255 (_("%B: uses different e_flags (0x%lx) fields "
4256 "than previous modules (0x%lx)"),
4257 ibfd, (long) new_flags, (long) old_flags);
4262 bfd_set_error (bfd_error_bad_value);
4270 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4271 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4273 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4274 struct bfd_link_info *info,
4275 enum ppc_elf_plt_type plt_style,
4278 struct ppc_elf_link_hash_table *htab;
4281 htab = ppc_elf_hash_table (info);
4283 if (htab->plt_type == PLT_UNSET)
4285 if (plt_style == PLT_OLD)
4286 htab->plt_type = PLT_OLD;
4290 enum ppc_elf_plt_type plt_type = plt_style;
4292 /* Look through the reloc flags left by ppc_elf_check_relocs.
4293 Use the old style bss plt if a file makes plt calls
4294 without using the new relocs, and if ld isn't given
4295 --secure-plt and we never see REL16 relocs. */
4296 if (plt_type == PLT_UNSET)
4298 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4299 if (is_ppc_elf (ibfd))
4301 if (ppc_elf_tdata (ibfd)->has_rel16)
4303 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4306 htab->old_bfd = ibfd;
4310 htab->plt_type = plt_type;
4313 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4314 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4316 htab->emit_stub_syms = emit_stub_syms;
4318 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4320 if (htab->plt_type == PLT_NEW)
4322 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4323 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4325 /* The new PLT is a loaded section. */
4326 if (htab->plt != NULL
4327 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4330 /* The new GOT is not executable. */
4331 if (htab->got != NULL
4332 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4337 /* Stop an unused .glink section from affecting .text alignment. */
4338 if (htab->glink != NULL
4339 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4342 return htab->plt_type == PLT_NEW;
4345 /* Return the section that should be marked against GC for a given
4349 ppc_elf_gc_mark_hook (asection *sec,
4350 struct bfd_link_info *info,
4351 Elf_Internal_Rela *rel,
4352 struct elf_link_hash_entry *h,
4353 Elf_Internal_Sym *sym)
4356 switch (ELF32_R_TYPE (rel->r_info))
4358 case R_PPC_GNU_VTINHERIT:
4359 case R_PPC_GNU_VTENTRY:
4363 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4366 /* Update the got, plt and dynamic reloc reference counts for the
4367 section being removed. */
4370 ppc_elf_gc_sweep_hook (bfd *abfd,
4371 struct bfd_link_info *info,
4373 const Elf_Internal_Rela *relocs)
4375 struct ppc_elf_link_hash_table *htab;
4376 Elf_Internal_Shdr *symtab_hdr;
4377 struct elf_link_hash_entry **sym_hashes;
4378 bfd_signed_vma *local_got_refcounts;
4379 const Elf_Internal_Rela *rel, *relend;
4382 if (info->relocatable)
4385 if ((sec->flags & SEC_ALLOC) == 0)
4388 elf_section_data (sec)->local_dynrel = NULL;
4390 htab = ppc_elf_hash_table (info);
4391 symtab_hdr = &elf_symtab_hdr (abfd);
4392 sym_hashes = elf_sym_hashes (abfd);
4393 local_got_refcounts = elf_local_got_refcounts (abfd);
4394 got2 = bfd_get_section_by_name (abfd, ".got2");
4396 relend = relocs + sec->reloc_count;
4397 for (rel = relocs; rel < relend; rel++)
4399 unsigned long r_symndx;
4400 enum elf_ppc_reloc_type r_type;
4401 struct elf_link_hash_entry *h = NULL;
4403 r_symndx = ELF32_R_SYM (rel->r_info);
4404 if (r_symndx >= symtab_hdr->sh_info)
4406 struct ppc_elf_dyn_relocs **pp, *p;
4407 struct ppc_elf_link_hash_entry *eh;
4409 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4410 while (h->root.type == bfd_link_hash_indirect
4411 || h->root.type == bfd_link_hash_warning)
4412 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4413 eh = (struct ppc_elf_link_hash_entry *) h;
4415 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4418 /* Everything must go for SEC. */
4424 r_type = ELF32_R_TYPE (rel->r_info);
4425 if (!htab->is_vxworks
4427 && local_got_refcounts != NULL
4429 || is_branch_reloc (r_type)))
4431 struct plt_entry **local_plt = (struct plt_entry **)
4432 (local_got_refcounts + symtab_hdr->sh_info);
4433 char *local_got_tls_masks = (char *)
4434 (local_plt + symtab_hdr->sh_info);
4435 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4437 struct plt_entry **ifunc = local_plt + r_symndx;
4439 struct plt_entry *ent;
4441 if (r_type == R_PPC_PLTREL24 && info->shared)
4442 addend = rel->r_addend;
4443 ent = find_plt_ent (ifunc, got2, addend);
4444 if (ent->plt.refcount > 0)
4445 ent->plt.refcount -= 1;
4452 case R_PPC_GOT_TLSLD16:
4453 case R_PPC_GOT_TLSLD16_LO:
4454 case R_PPC_GOT_TLSLD16_HI:
4455 case R_PPC_GOT_TLSLD16_HA:
4456 case R_PPC_GOT_TLSGD16:
4457 case R_PPC_GOT_TLSGD16_LO:
4458 case R_PPC_GOT_TLSGD16_HI:
4459 case R_PPC_GOT_TLSGD16_HA:
4460 case R_PPC_GOT_TPREL16:
4461 case R_PPC_GOT_TPREL16_LO:
4462 case R_PPC_GOT_TPREL16_HI:
4463 case R_PPC_GOT_TPREL16_HA:
4464 case R_PPC_GOT_DTPREL16:
4465 case R_PPC_GOT_DTPREL16_LO:
4466 case R_PPC_GOT_DTPREL16_HI:
4467 case R_PPC_GOT_DTPREL16_HA:
4469 case R_PPC_GOT16_LO:
4470 case R_PPC_GOT16_HI:
4471 case R_PPC_GOT16_HA:
4474 if (h->got.refcount > 0)
4478 struct plt_entry *ent;
4480 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4481 if (ent->plt.refcount > 0)
4482 ent->plt.refcount -= 1;
4485 else if (local_got_refcounts != NULL)
4487 if (local_got_refcounts[r_symndx] > 0)
4488 local_got_refcounts[r_symndx]--;
4494 case R_PPC_REL14_BRTAKEN:
4495 case R_PPC_REL14_BRNTAKEN:
4497 if (h == NULL || h == htab->elf.hgot)
4504 case R_PPC_ADDR16_LO:
4505 case R_PPC_ADDR16_HI:
4506 case R_PPC_ADDR16_HA:
4508 case R_PPC_ADDR14_BRTAKEN:
4509 case R_PPC_ADDR14_BRNTAKEN:
4516 case R_PPC_PLTREL24:
4517 case R_PPC_PLTREL32:
4518 case R_PPC_PLT16_LO:
4519 case R_PPC_PLT16_HI:
4520 case R_PPC_PLT16_HA:
4524 struct plt_entry *ent;
4526 if (r_type == R_PPC_PLTREL24 && info->shared)
4527 addend = rel->r_addend;
4528 ent = find_plt_ent (&h->plt.plist, got2, addend);
4529 if (ent->plt.refcount > 0)
4530 ent->plt.refcount -= 1;
4541 /* Set plt output section type, htab->tls_get_addr, and call the
4542 generic ELF tls_setup function. */
4545 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4547 struct ppc_elf_link_hash_table *htab;
4549 htab = ppc_elf_hash_table (info);
4550 if (htab->plt_type == PLT_NEW
4551 && htab->plt != NULL
4552 && htab->plt->output_section != NULL)
4554 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4555 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4558 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4559 FALSE, FALSE, TRUE);
4560 return _bfd_elf_tls_setup (obfd, info);
4563 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4567 branch_reloc_hash_match (const bfd *ibfd,
4568 const Elf_Internal_Rela *rel,
4569 const struct elf_link_hash_entry *hash)
4571 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4572 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4573 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4575 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4577 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4578 struct elf_link_hash_entry *h;
4580 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4581 while (h->root.type == bfd_link_hash_indirect
4582 || h->root.type == bfd_link_hash_warning)
4583 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4590 /* Run through all the TLS relocs looking for optimization
4594 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4595 struct bfd_link_info *info)
4599 struct ppc_elf_link_hash_table *htab;
4602 if (info->relocatable || !info->executable)
4605 htab = ppc_elf_hash_table (info);
4606 /* Make two passes through the relocs. First time check that tls
4607 relocs involved in setting up a tls_get_addr call are indeed
4608 followed by such a call. If they are not, exclude them from
4609 the optimizations done on the second pass. */
4610 for (pass = 0; pass < 2; ++pass)
4611 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4613 Elf_Internal_Sym *locsyms = NULL;
4614 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4616 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4617 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4619 Elf_Internal_Rela *relstart, *rel, *relend;
4621 /* Read the relocations. */
4622 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4624 if (relstart == NULL)
4627 relend = relstart + sec->reloc_count;
4628 for (rel = relstart; rel < relend; rel++)
4630 enum elf_ppc_reloc_type r_type;
4631 unsigned long r_symndx;
4632 struct elf_link_hash_entry *h = NULL;
4634 char tls_set, tls_clear;
4635 bfd_boolean is_local;
4636 int expecting_tls_get_addr;
4637 bfd_signed_vma *got_count;
4639 r_symndx = ELF32_R_SYM (rel->r_info);
4640 if (r_symndx >= symtab_hdr->sh_info)
4642 struct elf_link_hash_entry **sym_hashes;
4644 sym_hashes = elf_sym_hashes (ibfd);
4645 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4646 while (h->root.type == bfd_link_hash_indirect
4647 || h->root.type == bfd_link_hash_warning)
4648 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4651 expecting_tls_get_addr = 0;
4657 r_type = ELF32_R_TYPE (rel->r_info);
4660 case R_PPC_GOT_TLSLD16:
4661 case R_PPC_GOT_TLSLD16_LO:
4662 expecting_tls_get_addr = 1;
4665 case R_PPC_GOT_TLSLD16_HI:
4666 case R_PPC_GOT_TLSLD16_HA:
4667 /* These relocs should never be against a symbol
4668 defined in a shared lib. Leave them alone if
4669 that turns out to be the case. */
4678 case R_PPC_GOT_TLSGD16:
4679 case R_PPC_GOT_TLSGD16_LO:
4680 expecting_tls_get_addr = 1;
4683 case R_PPC_GOT_TLSGD16_HI:
4684 case R_PPC_GOT_TLSGD16_HA:
4690 tls_set = TLS_TLS | TLS_TPRELGD;
4694 case R_PPC_GOT_TPREL16:
4695 case R_PPC_GOT_TPREL16_LO:
4696 case R_PPC_GOT_TPREL16_HI:
4697 case R_PPC_GOT_TPREL16_HA:
4702 tls_clear = TLS_TPREL;
4714 if (!expecting_tls_get_addr
4715 || !sec->has_tls_get_addr_call)
4718 if (rel + 1 < relend
4719 && branch_reloc_hash_match (ibfd, rel + 1,
4720 htab->tls_get_addr))
4723 /* Uh oh, we didn't find the expected call. We
4724 could just mark this symbol to exclude it
4725 from tls optimization but it's safer to skip
4726 the entire section. */
4727 sec->has_tls_reloc = 0;
4733 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4734 got_count = &h->got.refcount;
4738 Elf_Internal_Sym *sym;
4739 bfd_signed_vma *lgot_refs;
4740 struct plt_entry **local_plt;
4743 if (locsyms == NULL)
4745 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4746 if (locsyms == NULL)
4747 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4748 symtab_hdr->sh_info,
4749 0, NULL, NULL, NULL);
4750 if (locsyms == NULL)
4752 if (elf_section_data (sec)->relocs != relstart)
4757 sym = locsyms + r_symndx;
4758 lgot_refs = elf_local_got_refcounts (ibfd);
4759 if (lgot_refs == NULL)
4761 local_plt = (struct plt_entry **)
4762 (lgot_refs + symtab_hdr->sh_info);
4763 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
4764 tls_mask = &lgot_masks[r_symndx];
4765 got_count = &lgot_refs[r_symndx];
4770 /* We managed to get rid of a got entry. */
4775 if (expecting_tls_get_addr)
4777 struct plt_entry *ent;
4779 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4781 if (ent != NULL && ent->plt.refcount > 0)
4782 ent->plt.refcount -= 1;
4785 *tls_mask |= tls_set;
4786 *tls_mask &= ~tls_clear;
4789 if (elf_section_data (sec)->relocs != relstart)
4794 && (symtab_hdr->contents != (unsigned char *) locsyms))
4796 if (!info->keep_memory)
4799 symtab_hdr->contents = (unsigned char *) locsyms;
4805 /* Return true if we have dynamic relocs that apply to read-only sections. */
4808 readonly_dynrelocs (struct elf_link_hash_entry *h)
4810 struct ppc_elf_dyn_relocs *p;
4812 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4814 asection *s = p->sec->output_section;
4817 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4818 == (SEC_READONLY | SEC_ALLOC)))
4824 /* Adjust a symbol defined by a dynamic object and referenced by a
4825 regular object. The current definition is in some section of the
4826 dynamic object, but we're not including those sections. We have to
4827 change the definition to something the rest of the link can
4831 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4832 struct elf_link_hash_entry *h)
4834 struct ppc_elf_link_hash_table *htab;
4838 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4839 h->root.root.string);
4842 /* Make sure we know what is going on here. */
4843 htab = ppc_elf_hash_table (info);
4844 BFD_ASSERT (htab->elf.dynobj != NULL
4846 || h->type == STT_GNU_IFUNC
4847 || h->u.weakdef != NULL
4850 && !h->def_regular)));
4852 /* Deal with function syms. */
4853 if (h->type == STT_FUNC
4854 || h->type == STT_GNU_IFUNC
4857 /* Clear procedure linkage table information for any symbol that
4858 won't need a .plt entry. */
4859 struct plt_entry *ent;
4860 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4861 if (ent->plt.refcount > 0)
4864 || (h->type != STT_GNU_IFUNC
4865 && (SYMBOL_CALLS_LOCAL (info, h)
4866 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4867 && h->root.type == bfd_link_hash_undefweak))))
4869 /* A PLT entry is not required/allowed when:
4871 1. We are not using ld.so; because then the PLT entry
4872 can't be set up, so we can't use one. In this case,
4873 ppc_elf_adjust_dynamic_symbol won't even be called.
4875 2. GC has rendered the entry unused.
4877 3. We know for certain that a call to this symbol
4878 will go to this object, or will remain undefined. */
4879 h->plt.plist = NULL;
4884 /* After adjust_dynamic_symbol, non_got_ref set in the
4885 non-shared case means that we have allocated space in
4886 .dynbss for the symbol and thus dyn_relocs for this
4887 symbol should be discarded.
4888 If we get here we know we are making a PLT entry for this
4889 symbol, and in an executable we'd normally resolve
4890 relocations against this symbol to the PLT entry. Allow
4891 dynamic relocs if the reference is weak, and the dynamic
4892 relocs will not cause text relocation. */
4893 if (!h->ref_regular_nonweak
4895 && h->type != STT_GNU_IFUNC
4896 && !htab->is_vxworks
4897 && !ppc_elf_hash_entry (h)->has_sda_refs
4898 && !readonly_dynrelocs (h))
4904 h->plt.plist = NULL;
4906 /* If this is a weak symbol, and there is a real definition, the
4907 processor independent code will have arranged for us to see the
4908 real definition first, and we can just use the same value. */
4909 if (h->u.weakdef != NULL)
4911 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4912 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4913 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4914 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4915 if (ELIMINATE_COPY_RELOCS)
4916 h->non_got_ref = h->u.weakdef->non_got_ref;
4920 /* This is a reference to a symbol defined by a dynamic object which
4921 is not a function. */
4923 /* If we are creating a shared library, we must presume that the
4924 only references to the symbol are via the global offset table.
4925 For such cases we need not do anything here; the relocations will
4926 be handled correctly by relocate_section. */
4930 /* If there are no references to this symbol that do not use the
4931 GOT, we don't need to generate a copy reloc. */
4932 if (!h->non_got_ref)
4935 /* If we didn't find any dynamic relocs in read-only sections, then
4936 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4937 We can't do this if there are any small data relocations. This
4938 doesn't work on VxWorks, where we can not have dynamic
4939 relocations (other than copy and jump slot relocations) in an
4941 if (ELIMINATE_COPY_RELOCS
4942 && !ppc_elf_hash_entry (h)->has_sda_refs
4943 && !htab->is_vxworks
4945 && !readonly_dynrelocs (h))
4953 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4954 h->root.root.string);
4958 /* We must allocate the symbol in our .dynbss section, which will
4959 become part of the .bss section of the executable. There will be
4960 an entry for this symbol in the .dynsym section. The dynamic
4961 object will contain position independent code, so all references
4962 from the dynamic object to this symbol will go through the global
4963 offset table. The dynamic linker will use the .dynsym entry to
4964 determine the address it must put in the global offset table, so
4965 both the dynamic object and the regular object will refer to the
4966 same memory location for the variable.
4968 Of course, if the symbol is referenced using SDAREL relocs, we
4969 must instead allocate it in .sbss. */
4971 if (ppc_elf_hash_entry (h)->has_sda_refs)
4975 BFD_ASSERT (s != NULL);
4977 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4978 copy the initial value out of the dynamic object and into the
4979 runtime process image. We need to remember the offset into the
4980 .rela.bss section we are going to use. */
4981 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4985 if (ppc_elf_hash_entry (h)->has_sda_refs)
4986 srel = htab->relsbss;
4988 srel = htab->relbss;
4989 BFD_ASSERT (srel != NULL);
4990 srel->size += sizeof (Elf32_External_Rela);
4994 return _bfd_elf_adjust_dynamic_copy (h, s);
4997 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4998 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4999 specifying the addend on the plt relocation. For -fpic code, the sym
5000 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5001 xxxxxxxx.got2.plt_pic32.<callee>. */
5004 add_stub_sym (struct plt_entry *ent,
5005 struct elf_link_hash_entry *h,
5006 struct bfd_link_info *info)
5008 struct elf_link_hash_entry *sh;
5009 size_t len1, len2, len3;
5012 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5015 stub = ".plt_pic32.";
5017 stub = ".plt_call32.";
5019 len1 = strlen (h->root.root.string);
5020 len2 = strlen (stub);
5023 len3 = strlen (ent->sec->name);
5024 name = bfd_malloc (len1 + len2 + len3 + 9);
5027 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5029 memcpy (name + 8, ent->sec->name, len3);
5030 memcpy (name + 8 + len3, stub, len2);
5031 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5032 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5035 if (sh->root.type == bfd_link_hash_new)
5037 sh->root.type = bfd_link_hash_defined;
5038 sh->root.u.def.section = htab->glink;
5039 sh->root.u.def.value = ent->glink_offset;
5040 sh->ref_regular = 1;
5041 sh->def_regular = 1;
5042 sh->ref_regular_nonweak = 1;
5043 sh->forced_local = 1;
5049 /* Allocate NEED contiguous space in .got, and return the offset.
5050 Handles allocation of the got header when crossing 32k. */
5053 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5056 unsigned int max_before_header;
5058 if (htab->plt_type == PLT_VXWORKS)
5060 where = htab->got->size;
5061 htab->got->size += need;
5065 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5066 if (need <= htab->got_gap)
5068 where = max_before_header - htab->got_gap;
5069 htab->got_gap -= need;
5073 if (htab->got->size + need > max_before_header
5074 && htab->got->size <= max_before_header)
5076 htab->got_gap = max_before_header - htab->got->size;
5077 htab->got->size = max_before_header + htab->got_header_size;
5079 where = htab->got->size;
5080 htab->got->size += need;
5086 /* Allocate space in associated reloc sections for dynamic relocs. */
5089 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5091 struct bfd_link_info *info = inf;
5092 struct ppc_elf_link_hash_entry *eh;
5093 struct ppc_elf_link_hash_table *htab;
5094 struct ppc_elf_dyn_relocs *p;
5096 if (h->root.type == bfd_link_hash_indirect)
5099 if (h->root.type == bfd_link_hash_warning)
5100 /* When warning symbols are created, they **replace** the "real"
5101 entry in the hash table, thus we never get to see the real
5102 symbol in a hash traversal. So look at it now. */
5103 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5105 htab = ppc_elf_hash_table (info);
5106 if (htab->elf.dynamic_sections_created
5107 || h->type == STT_GNU_IFUNC)
5109 struct plt_entry *ent;
5110 bfd_boolean doneone = FALSE;
5111 bfd_vma plt_offset = 0, glink_offset = 0;
5114 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5115 if (ent->plt.refcount > 0)
5117 /* Make sure this symbol is output as a dynamic symbol. */
5118 if (h->dynindx == -1
5121 && htab->elf.dynamic_sections_created)
5123 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5127 dyn = htab->elf.dynamic_sections_created;
5129 || h->type == STT_GNU_IFUNC
5130 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5132 asection *s = htab->plt;
5133 if (!dyn || h->dynindx == -1)
5136 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5140 plt_offset = s->size;
5143 ent->plt.offset = plt_offset;
5146 if (!doneone || info->shared)
5148 glink_offset = s->size;
5149 s->size += GLINK_ENTRY_SIZE;
5156 h->root.u.def.section = s;
5157 h->root.u.def.value = glink_offset;
5159 ent->glink_offset = glink_offset;
5161 if (htab->emit_stub_syms
5162 && !add_stub_sym (ent, h, info))
5169 /* If this is the first .plt entry, make room
5170 for the special first entry. */
5172 s->size += htab->plt_initial_entry_size;
5174 /* The PowerPC PLT is actually composed of two
5175 parts, the first part is 2 words (for a load
5176 and a jump), and then there is a remaining
5177 word available at the end. */
5178 plt_offset = (htab->plt_initial_entry_size
5179 + (htab->plt_slot_size
5181 - htab->plt_initial_entry_size)
5182 / htab->plt_entry_size)));
5184 /* If this symbol is not defined in a regular
5185 file, and we are not generating a shared
5186 library, then set the symbol to this location
5187 in the .plt. This is to avoid text
5188 relocations, and is required to make
5189 function pointers compare as equal between
5190 the normal executable and the shared library. */
5195 h->root.u.def.section = s;
5196 h->root.u.def.value = plt_offset;
5199 /* Make room for this entry. */
5200 s->size += htab->plt_entry_size;
5201 /* After the 8192nd entry, room for two entries
5203 if (htab->plt_type == PLT_OLD
5204 && (s->size - htab->plt_initial_entry_size)
5205 / htab->plt_entry_size
5206 > PLT_NUM_SINGLE_ENTRIES)
5207 s->size += htab->plt_entry_size;
5209 ent->plt.offset = plt_offset;
5212 /* We also need to make an entry in the .rela.plt section. */
5215 if (!htab->elf.dynamic_sections_created
5216 || h->dynindx == -1)
5217 htab->reliplt->size += sizeof (Elf32_External_Rela);
5220 htab->relplt->size += sizeof (Elf32_External_Rela);
5222 if (htab->plt_type == PLT_VXWORKS)
5224 /* Allocate space for the unloaded relocations. */
5226 && htab->elf.dynamic_sections_created)
5229 == (bfd_vma) htab->plt_initial_entry_size)
5231 htab->srelplt2->size
5232 += (sizeof (Elf32_External_Rela)
5233 * VXWORKS_PLTRESOLVE_RELOCS);
5236 htab->srelplt2->size
5237 += (sizeof (Elf32_External_Rela)
5238 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5241 /* Every PLT entry has an associated GOT entry in
5243 htab->sgotplt->size += 4;
5250 ent->plt.offset = (bfd_vma) -1;
5253 ent->plt.offset = (bfd_vma) -1;
5257 h->plt.plist = NULL;
5263 h->plt.plist = NULL;
5267 eh = (struct ppc_elf_link_hash_entry *) h;
5268 if (eh->elf.got.refcount > 0)
5273 /* Make sure this symbol is output as a dynamic symbol. */
5274 if (eh->elf.dynindx == -1
5275 && !eh->elf.forced_local
5276 && eh->elf.type != STT_GNU_IFUNC
5277 && htab->elf.dynamic_sections_created)
5279 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5284 if ((eh->tls_mask & TLS_TLS) != 0)
5286 if ((eh->tls_mask & TLS_LD) != 0)
5288 if (!eh->elf.def_dynamic)
5289 /* We'll just use htab->tlsld_got.offset. This should
5290 always be the case. It's a little odd if we have
5291 a local dynamic reloc against a non-local symbol. */
5292 htab->tlsld_got.refcount += 1;
5296 if ((eh->tls_mask & TLS_GD) != 0)
5298 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5300 if ((eh->tls_mask & TLS_DTPREL) != 0)
5306 eh->elf.got.offset = (bfd_vma) -1;
5309 eh->elf.got.offset = allocate_got (htab, need);
5310 dyn = htab->elf.dynamic_sections_created;
5312 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5313 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5314 || eh->elf.root.type != bfd_link_hash_undefweak))
5316 asection *rsec = htab->relgot;
5317 /* All the entries we allocated need relocs.
5318 Except LD only needs one. */
5319 if ((eh->tls_mask & TLS_LD) != 0
5320 && eh->elf.def_dynamic)
5322 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5327 eh->elf.got.offset = (bfd_vma) -1;
5329 if (eh->dyn_relocs == NULL
5330 || !htab->elf.dynamic_sections_created)
5333 /* In the shared -Bsymbolic case, discard space allocated for
5334 dynamic pc-relative relocs against symbols which turn out to be
5335 defined in regular objects. For the normal shared case, discard
5336 space for relocs that have become local due to symbol visibility
5341 /* Relocs that use pc_count are those that appear on a call insn,
5342 or certain REL relocs (see must_be_dyn_reloc) that can be
5343 generated via assembly. We want calls to protected symbols to
5344 resolve directly to the function rather than going via the plt.
5345 If people want function pointer comparisons to work as expected
5346 then they should avoid writing weird assembly. */
5347 if (SYMBOL_CALLS_LOCAL (info, h))
5349 struct ppc_elf_dyn_relocs **pp;
5351 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5353 p->count -= p->pc_count;
5362 if (htab->is_vxworks)
5364 struct ppc_elf_dyn_relocs **pp;
5366 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5368 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5375 /* Discard relocs on undefined symbols that must be local. */
5376 if (eh->dyn_relocs != NULL
5377 && h->root.type == bfd_link_hash_undefined
5378 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5379 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5380 eh->dyn_relocs = NULL;
5382 /* Also discard relocs on undefined weak syms with non-default
5384 if (eh->dyn_relocs != NULL
5385 && h->root.type == bfd_link_hash_undefweak)
5387 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5388 eh->dyn_relocs = NULL;
5390 /* Make sure undefined weak symbols are output as a dynamic
5392 else if (h->dynindx == -1
5396 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5401 else if (ELIMINATE_COPY_RELOCS)
5403 /* For the non-shared case, discard space for relocs against
5404 symbols which turn out to need copy relocs or are not
5410 /* Make sure this symbol is output as a dynamic symbol.
5411 Undefined weak syms won't yet be marked as dynamic. */
5412 if (h->dynindx == -1
5413 && !h->forced_local)
5415 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5419 /* If that succeeded, we know we'll be keeping all the
5421 if (h->dynindx != -1)
5425 eh->dyn_relocs = NULL;
5430 /* Finally, allocate space. */
5431 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5433 asection *sreloc = elf_section_data (p->sec)->sreloc;
5434 if (!htab->elf.dynamic_sections_created)
5435 sreloc = htab->reliplt;
5436 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5442 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5443 read-only sections. */
5446 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5448 if (h->root.type == bfd_link_hash_indirect)
5451 if (h->root.type == bfd_link_hash_warning)
5452 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5454 if (readonly_dynrelocs (h))
5456 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5458 /* Not an error, just cut short the traversal. */
5464 /* Set the sizes of the dynamic sections. */
5467 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5468 struct bfd_link_info *info)
5470 struct ppc_elf_link_hash_table *htab;
5476 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5479 htab = ppc_elf_hash_table (info);
5480 BFD_ASSERT (htab->elf.dynobj != NULL);
5482 if (elf_hash_table (info)->dynamic_sections_created)
5484 /* Set the contents of the .interp section to the interpreter. */
5485 if (info->executable)
5487 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5488 BFD_ASSERT (s != NULL);
5489 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5490 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5494 if (htab->plt_type == PLT_OLD)
5495 htab->got_header_size = 16;
5496 else if (htab->plt_type == PLT_NEW)
5497 htab->got_header_size = 12;
5499 /* Set up .got offsets for local syms, and space for local dynamic
5501 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5503 bfd_signed_vma *local_got;
5504 bfd_signed_vma *end_local_got;
5505 struct plt_entry **local_plt;
5506 struct plt_entry **end_local_plt;
5508 bfd_size_type locsymcount;
5509 Elf_Internal_Shdr *symtab_hdr;
5511 if (!is_ppc_elf (ibfd))
5514 for (s = ibfd->sections; s != NULL; s = s->next)
5516 struct ppc_elf_dyn_relocs *p;
5518 for (p = ((struct ppc_elf_dyn_relocs *)
5519 elf_section_data (s)->local_dynrel);
5523 if (!bfd_is_abs_section (p->sec)
5524 && bfd_is_abs_section (p->sec->output_section))
5526 /* Input section has been discarded, either because
5527 it is a copy of a linkonce section or due to
5528 linker script /DISCARD/, so we'll be discarding
5531 else if (htab->is_vxworks
5532 && strcmp (p->sec->output_section->name,
5535 /* Relocations in vxworks .tls_vars sections are
5536 handled specially by the loader. */
5538 else if (p->count != 0)
5540 asection *sreloc = elf_section_data (p->sec)->sreloc;
5541 if (!htab->elf.dynamic_sections_created)
5542 sreloc = htab->reliplt;
5543 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5544 if ((p->sec->output_section->flags
5545 & (SEC_READONLY | SEC_ALLOC))
5546 == (SEC_READONLY | SEC_ALLOC))
5547 info->flags |= DF_TEXTREL;
5552 local_got = elf_local_got_refcounts (ibfd);
5556 symtab_hdr = &elf_symtab_hdr (ibfd);
5557 locsymcount = symtab_hdr->sh_info;
5558 end_local_got = local_got + locsymcount;
5559 local_plt = (struct plt_entry **) end_local_got;
5560 end_local_plt = local_plt + locsymcount;
5561 lgot_masks = (char *) end_local_plt;
5562 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5565 unsigned int need = 0;
5566 if ((*lgot_masks & TLS_TLS) != 0)
5568 if ((*lgot_masks & TLS_GD) != 0)
5570 if ((*lgot_masks & TLS_LD) != 0)
5571 htab->tlsld_got.refcount += 1;
5572 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5574 if ((*lgot_masks & TLS_DTPREL) != 0)
5580 *local_got = (bfd_vma) -1;
5583 *local_got = allocate_got (htab, need);
5585 htab->relgot->size += (need
5586 * (sizeof (Elf32_External_Rela) / 4));
5590 *local_got = (bfd_vma) -1;
5592 if (htab->is_vxworks)
5595 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5596 for (; local_plt < end_local_plt; ++local_plt)
5598 struct plt_entry *ent;
5599 bfd_boolean doneone = FALSE;
5600 bfd_vma plt_offset = 0, glink_offset = 0;
5602 for (ent = *local_plt; ent != NULL; ent = ent->next)
5603 if (ent->plt.refcount > 0)
5605 asection *s = htab->iplt;
5609 plt_offset = s->size;
5612 ent->plt.offset = plt_offset;
5615 if (!doneone || info->shared)
5617 glink_offset = s->size;
5618 s->size += GLINK_ENTRY_SIZE;
5620 ent->glink_offset = glink_offset;
5624 htab->reliplt->size += sizeof (Elf32_External_Rela);
5629 ent->plt.offset = (bfd_vma) -1;
5633 /* Allocate space for global sym dynamic relocs. */
5634 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5636 if (htab->tlsld_got.refcount > 0)
5638 htab->tlsld_got.offset = allocate_got (htab, 8);
5640 htab->relgot->size += sizeof (Elf32_External_Rela);
5643 htab->tlsld_got.offset = (bfd_vma) -1;
5645 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5647 unsigned int g_o_t = 32768;
5649 /* If we haven't allocated the header, do so now. When we get here,
5650 for old plt/got the got size will be 0 to 32764 (not allocated),
5651 or 32780 to 65536 (header allocated). For new plt/got, the
5652 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5653 if (htab->got->size <= 32768)
5655 g_o_t = htab->got->size;
5656 if (htab->plt_type == PLT_OLD)
5658 htab->got->size += htab->got_header_size;
5661 htab->elf.hgot->root.u.def.value = g_o_t;
5664 if (htab->glink != NULL
5665 && htab->glink->size != 0
5666 && htab->elf.dynamic_sections_created)
5668 htab->glink_pltresolve = htab->glink->size;
5669 /* Space for the branch table. */
5670 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5671 /* Pad out to align the start of PLTresolve. */
5672 htab->glink->size += -htab->glink->size & 15;
5673 htab->glink->size += GLINK_PLTRESOLVE;
5675 if (htab->emit_stub_syms)
5677 struct elf_link_hash_entry *sh;
5678 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5679 TRUE, FALSE, FALSE);
5682 if (sh->root.type == bfd_link_hash_new)
5684 sh->root.type = bfd_link_hash_defined;
5685 sh->root.u.def.section = htab->glink;
5686 sh->root.u.def.value = htab->glink_pltresolve;
5687 sh->ref_regular = 1;
5688 sh->def_regular = 1;
5689 sh->ref_regular_nonweak = 1;
5690 sh->forced_local = 1;
5693 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5694 TRUE, FALSE, FALSE);
5697 if (sh->root.type == bfd_link_hash_new)
5699 sh->root.type = bfd_link_hash_defined;
5700 sh->root.u.def.section = htab->glink;
5701 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5702 sh->ref_regular = 1;
5703 sh->def_regular = 1;
5704 sh->ref_regular_nonweak = 1;
5705 sh->forced_local = 1;
5711 /* We've now determined the sizes of the various dynamic sections.
5712 Allocate memory for them. */
5714 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5716 bfd_boolean strip_section = TRUE;
5718 if ((s->flags & SEC_LINKER_CREATED) == 0)
5724 /* We'd like to strip these sections if they aren't needed, but if
5725 we've exported dynamic symbols from them we must leave them.
5726 It's too late to tell BFD to get rid of the symbols. */
5727 if (htab->elf.hplt != NULL)
5728 strip_section = FALSE;
5729 /* Strip this section if we don't need it; see the
5732 else if (s == htab->iplt
5734 || s == htab->sgotplt
5736 || s == htab->dynbss
5737 || s == htab->dynsbss
5738 || s == htab->sdata[0].section
5739 || s == htab->sdata[1].section)
5741 /* Strip these too. */
5743 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5747 /* Remember whether there are any relocation sections. */
5750 /* We use the reloc_count field as a counter if we need
5751 to copy relocs into the output file. */
5757 /* It's not one of our sections, so don't allocate space. */
5761 if (s->size == 0 && strip_section)
5763 /* If we don't need this section, strip it from the
5764 output file. This is mostly to handle .rela.bss and
5765 .rela.plt. We must create both sections in
5766 create_dynamic_sections, because they must be created
5767 before the linker maps input sections to output
5768 sections. The linker does that before
5769 adjust_dynamic_symbol is called, and it is that
5770 function which decides whether anything needs to go
5771 into these sections. */
5772 s->flags |= SEC_EXCLUDE;
5776 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5779 /* Allocate memory for the section contents. */
5780 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5781 if (s->contents == NULL)
5785 if (htab->elf.dynamic_sections_created)
5787 /* Add some entries to the .dynamic section. We fill in the
5788 values later, in ppc_elf_finish_dynamic_sections, but we
5789 must add the entries now so that we get the correct size for
5790 the .dynamic section. The DT_DEBUG entry is filled in by the
5791 dynamic linker and used by the debugger. */
5792 #define add_dynamic_entry(TAG, VAL) \
5793 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5795 if (info->executable)
5797 if (!add_dynamic_entry (DT_DEBUG, 0))
5801 if (htab->plt != NULL && htab->plt->size != 0)
5803 if (!add_dynamic_entry (DT_PLTGOT, 0)
5804 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5805 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5806 || !add_dynamic_entry (DT_JMPREL, 0))
5810 if (htab->glink != NULL && htab->glink->size != 0)
5812 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5818 if (!add_dynamic_entry (DT_RELA, 0)
5819 || !add_dynamic_entry (DT_RELASZ, 0)
5820 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5824 /* If any dynamic relocs apply to a read-only section, then we
5825 need a DT_TEXTREL entry. */
5826 if ((info->flags & DF_TEXTREL) == 0)
5827 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5830 if ((info->flags & DF_TEXTREL) != 0)
5832 if (!add_dynamic_entry (DT_TEXTREL, 0))
5835 if (htab->is_vxworks
5836 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5839 #undef add_dynamic_entry
5844 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5847 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5849 if (h->plt.plist != NULL
5851 && (!h->pointer_equality_needed
5852 || !h->ref_regular_nonweak))
5855 return _bfd_elf_hash_symbol (h);
5858 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5860 /* Relaxation trampolines. r12 is available for clobbering (r11, is
5861 used for some functions that are allowed to break the ABI). */
5862 static const int shared_stub_entry[] =
5864 0x7c0802a6, /* mflr 0 */
5865 0x429f0005, /* bcl 20, 31, .Lxxx */
5866 0x7d8802a6, /* mflr 12 */
5867 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
5868 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
5869 0x7c0803a6, /* mtlr 0 */
5870 0x7d8903a6, /* mtctr 12 */
5871 0x4e800420, /* bctr */
5874 static const int stub_entry[] =
5876 0x3d800000, /* lis 12,xxx@ha */
5877 0x398c0000, /* addi 12,12,xxx@l */
5878 0x7d8903a6, /* mtctr 12 */
5879 0x4e800420, /* bctr */
5883 ppc_elf_relax_section (bfd *abfd,
5885 struct bfd_link_info *link_info,
5890 struct one_fixup *next;
5892 /* Final link, can use the symbol offset. For a
5893 relocatable link we use the symbol's index. */
5898 Elf_Internal_Shdr *symtab_hdr;
5899 bfd_byte *contents = NULL;
5900 Elf_Internal_Sym *isymbuf = NULL;
5901 Elf_Internal_Rela *internal_relocs = NULL;
5902 Elf_Internal_Rela *irel, *irelend;
5903 struct one_fixup *fixups = NULL;
5904 unsigned changes = 0;
5905 struct ppc_elf_link_hash_table *htab;
5906 bfd_size_type trampoff;
5911 /* Nothing to do if there are no relocations, and no need to do
5912 anything with non-alloc or non-code sections. */
5913 if ((isec->flags & SEC_ALLOC) == 0
5914 || (isec->flags & SEC_CODE) == 0
5915 || (isec->flags & SEC_RELOC) == 0
5916 || isec->reloc_count == 0)
5919 /* We cannot represent the required PIC relocs in the output, so don't
5920 do anything. The linker doesn't support mixing -shared and -r
5922 if (link_info->relocatable && link_info->shared)
5925 trampoff = (isec->size + 3) & (bfd_vma) -4;
5926 /* Space for a branch around any trampolines. */
5929 symtab_hdr = &elf_symtab_hdr (abfd);
5931 /* Get a copy of the native relocations. */
5932 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5933 link_info->keep_memory);
5934 if (internal_relocs == NULL)
5937 htab = ppc_elf_hash_table (link_info);
5938 got2 = bfd_get_section_by_name (abfd, ".got2");
5940 irelend = internal_relocs + isec->reloc_count;
5941 for (irel = internal_relocs; irel < irelend; irel++)
5943 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5944 bfd_vma reladdr, toff, roff;
5946 struct one_fixup *f;
5947 size_t insn_offset = 0;
5948 bfd_vma max_branch_offset, val;
5951 struct elf_link_hash_entry *h;
5952 struct plt_entry **plist;
5953 unsigned char sym_type;
5958 case R_PPC_LOCAL24PC:
5959 case R_PPC_PLTREL24:
5960 max_branch_offset = 1 << 25;
5964 case R_PPC_REL14_BRTAKEN:
5965 case R_PPC_REL14_BRNTAKEN:
5966 max_branch_offset = 1 << 15;
5973 /* Get the value of the symbol referred to by the reloc. */
5975 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5977 /* A local symbol. */
5978 Elf_Internal_Sym *isym;
5980 /* Read this BFD's local symbols. */
5981 if (isymbuf == NULL)
5983 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5984 if (isymbuf == NULL)
5985 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5986 symtab_hdr->sh_info, 0,
5991 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5992 if (isym->st_shndx == SHN_UNDEF)
5993 tsec = bfd_und_section_ptr;
5994 else if (isym->st_shndx == SHN_ABS)
5995 tsec = bfd_abs_section_ptr;
5996 else if (isym->st_shndx == SHN_COMMON)
5997 tsec = bfd_com_section_ptr;
5999 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6001 toff = isym->st_value;
6002 sym_type = ELF_ST_TYPE (isym->st_info);
6006 /* Global symbol handling. */
6009 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6010 h = elf_sym_hashes (abfd)[indx];
6012 while (h->root.type == bfd_link_hash_indirect
6013 || h->root.type == bfd_link_hash_warning)
6014 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6016 if (h->root.type == bfd_link_hash_defined
6017 || h->root.type == bfd_link_hash_defweak)
6019 tsec = h->root.u.def.section;
6020 toff = h->root.u.def.value;
6022 else if (h->root.type == bfd_link_hash_undefined
6023 || h->root.type == bfd_link_hash_undefweak)
6025 tsec = bfd_und_section_ptr;
6026 toff = link_info->relocatable ? indx : 0;
6034 /* The condition here under which we call find_plt_ent must
6035 match that in relocate_section. If we call find_plt_ent here
6036 but not in relocate_section, or vice versa, then the branch
6037 destination used here may be incorrect. */
6041 /* We know is_branch_reloc (r_type) is true. */
6042 if (h->type == STT_GNU_IFUNC
6043 || r_type == R_PPC_PLTREL24)
6044 plist = &h->plt.plist;
6046 else if (sym_type == STT_GNU_IFUNC
6047 && elf_local_got_offsets (abfd) != NULL)
6049 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6050 struct plt_entry **local_plt = (struct plt_entry **)
6051 (local_got_offsets + symtab_hdr->sh_info);
6052 plist = local_plt + ELF32_R_SYM (irel->r_info);
6057 struct plt_entry *ent;
6059 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6060 addend = irel->r_addend;
6061 ent = find_plt_ent (plist, got2, addend);
6064 if (htab->plt_type == PLT_NEW
6066 || !htab->elf.dynamic_sections_created
6067 || h->dynindx == -1)
6070 toff = ent->glink_offset;
6075 toff = ent->plt.offset;
6080 /* If the branch and target are in the same section, you have
6081 no hope of adding stubs. We'll error out later should the
6086 /* There probably isn't any reason to handle symbols in
6087 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6088 attribute for a code section, and we are only looking at
6089 branches. However, implement it correctly here as a
6090 reference for other target relax_section functions. */
6091 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6093 /* At this stage in linking, no SEC_MERGE symbol has been
6094 adjusted, so all references to such symbols need to be
6095 passed through _bfd_merged_section_offset. (Later, in
6096 relocate_section, all SEC_MERGE symbols *except* for
6097 section symbols have been adjusted.)
6099 gas may reduce relocations against symbols in SEC_MERGE
6100 sections to a relocation against the section symbol when
6101 the original addend was zero. When the reloc is against
6102 a section symbol we should include the addend in the
6103 offset passed to _bfd_merged_section_offset, since the
6104 location of interest is the original symbol. On the
6105 other hand, an access to "sym+addend" where "sym" is not
6106 a section symbol should not include the addend; Such an
6107 access is presumed to be an offset from "sym"; The
6108 location of interest is just "sym". */
6109 if (sym_type == STT_SECTION)
6110 toff += irel->r_addend;
6112 toff = _bfd_merged_section_offset (abfd, &tsec,
6113 elf_section_data (tsec)->sec_info,
6116 if (sym_type != STT_SECTION)
6117 toff += irel->r_addend;
6119 /* PLTREL24 addends are special. */
6120 else if (r_type != R_PPC_PLTREL24)
6121 toff += irel->r_addend;
6123 /* Attempted -shared link of non-pic code loses. */
6124 if (tsec->output_section == NULL)
6127 roff = irel->r_offset;
6128 reladdr = isec->output_section->vma + isec->output_offset + roff;
6130 /* If the branch is in range, no need to do anything. */
6131 if (tsec != bfd_und_section_ptr
6132 && (!link_info->relocatable
6133 /* A relocatable link may have sections moved during
6134 final link, so do not presume they remain in range. */
6135 || tsec->output_section == isec->output_section))
6137 bfd_vma symaddr, reladdr;
6139 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6140 reladdr = isec->output_section->vma + isec->output_offset + roff;
6141 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6145 /* Look for an existing fixup to this address. */
6146 for (f = fixups; f ; f = f->next)
6147 if (f->tsec == tsec && f->toff == toff)
6153 unsigned long stub_rtype;
6155 val = trampoff - roff;
6156 if (val >= max_branch_offset)
6157 /* Oh dear, we can't reach a trampoline. Don't try to add
6158 one. We'll report an error later. */
6161 if (link_info->shared)
6163 size = 4 * ARRAY_SIZE (shared_stub_entry);
6165 stub_rtype = R_PPC_RELAX32PC;
6169 size = 4 * ARRAY_SIZE (stub_entry);
6171 stub_rtype = R_PPC_RELAX32;
6174 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
6175 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
6177 if (tsec == htab->plt
6178 || tsec == htab->glink)
6179 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
6181 /* Hijack the old relocation. Since we need two
6182 relocations for this use a "composite" reloc. */
6183 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6185 irel->r_offset = trampoff + insn_offset;
6186 if (r_type == R_PPC_PLTREL24)
6189 /* Record the fixup so we don't do it again this section. */
6190 f = bfd_malloc (sizeof (*f));
6194 f->trampoff = trampoff;
6202 val = f->trampoff - roff;
6203 if (val >= max_branch_offset)
6206 /* Nop out the reloc, since we're finalizing things here. */
6207 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6210 /* Get the section contents. */
6211 if (contents == NULL)
6213 /* Get cached copy if it exists. */
6214 if (elf_section_data (isec)->this_hdr.contents != NULL)
6215 contents = elf_section_data (isec)->this_hdr.contents;
6218 /* Go get them off disk. */
6219 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6224 /* Fix up the existing branch to hit the trampoline. */
6225 hit_addr = contents + roff;
6229 case R_PPC_LOCAL24PC:
6230 case R_PPC_PLTREL24:
6231 t0 = bfd_get_32 (abfd, hit_addr);
6233 t0 |= val & 0x3fffffc;
6234 bfd_put_32 (abfd, t0, hit_addr);
6238 case R_PPC_REL14_BRTAKEN:
6239 case R_PPC_REL14_BRNTAKEN:
6240 t0 = bfd_get_32 (abfd, hit_addr);
6243 bfd_put_32 (abfd, t0, hit_addr);
6248 /* Write out the trampolines. */
6258 struct one_fixup *f = fixups;
6259 fixups = fixups->next;
6264 contents = bfd_realloc_or_free (contents, trampoff);
6265 if (contents == NULL)
6268 isec->size = (isec->size + 3) & (bfd_vma) -4;
6269 /* Branch around the trampolines. */
6270 val = B + trampoff - isec->size;
6271 dest = contents + isec->size;
6272 isec->size = trampoff;
6273 bfd_put_32 (abfd, val, dest);
6276 if (link_info->shared)
6278 stub = shared_stub_entry;
6279 size = ARRAY_SIZE (shared_stub_entry);
6284 size = ARRAY_SIZE (stub_entry);
6288 while (dest < contents + trampoff)
6290 bfd_put_32 (abfd, stub[i], dest);
6296 BFD_ASSERT (i == 0);
6300 && symtab_hdr->contents != (unsigned char *) isymbuf)
6302 if (! link_info->keep_memory)
6306 /* Cache the symbols for elf_link_input_bfd. */
6307 symtab_hdr->contents = (unsigned char *) isymbuf;
6311 if (contents != NULL
6312 && elf_section_data (isec)->this_hdr.contents != contents)
6314 if (!changes && !link_info->keep_memory)
6318 /* Cache the section contents for elf_link_input_bfd. */
6319 elf_section_data (isec)->this_hdr.contents = contents;
6325 /* Append sufficient NOP relocs so we can write out relocation
6326 information for the trampolines. */
6327 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6328 * sizeof (*new_relocs));
6333 memcpy (new_relocs, internal_relocs,
6334 isec->reloc_count * sizeof (*new_relocs));
6335 for (ix = changes; ix--;)
6337 irel = new_relocs + ix + isec->reloc_count;
6339 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6341 if (internal_relocs != elf_section_data (isec)->relocs)
6342 free (internal_relocs);
6343 elf_section_data (isec)->relocs = new_relocs;
6344 isec->reloc_count += changes;
6345 elf_section_data (isec)->rel_hdr.sh_size
6346 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
6348 else if (elf_section_data (isec)->relocs != internal_relocs)
6349 free (internal_relocs);
6351 *again = changes != 0;
6352 if (!*again && link_info->relocatable)
6354 /* Convert the internal relax relocs to external form. */
6355 for (irel = internal_relocs; irel < irelend; irel++)
6356 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX32)
6358 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6360 /* Rewrite the reloc and convert one of the trailing nop
6361 relocs to describe this relocation. */
6362 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6363 /* The relocs are at the bottom 2 bytes */
6364 irel[0].r_offset += 2;
6365 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6366 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6367 irel[1].r_offset += 4;
6368 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6376 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6378 if (contents != NULL
6379 && elf_section_data (isec)->this_hdr.contents != contents)
6381 if (internal_relocs != NULL
6382 && elf_section_data (isec)->relocs != internal_relocs)
6383 free (internal_relocs);
6387 /* What to do when ld finds relocations against symbols defined in
6388 discarded sections. */
6391 ppc_elf_action_discarded (asection *sec)
6393 if (strcmp (".fixup", sec->name) == 0)
6396 if (strcmp (".got2", sec->name) == 0)
6399 return _bfd_elf_default_action_discarded (sec);
6402 /* Fill in the address for a pointer generated in a linker section. */
6405 elf_finish_pointer_linker_section (bfd *input_bfd,
6406 elf_linker_section_t *lsect,
6407 struct elf_link_hash_entry *h,
6409 const Elf_Internal_Rela *rel)
6411 elf_linker_section_pointers_t *linker_section_ptr;
6413 BFD_ASSERT (lsect != NULL);
6417 /* Handle global symbol. */
6418 struct ppc_elf_link_hash_entry *eh;
6420 eh = (struct ppc_elf_link_hash_entry *) h;
6421 BFD_ASSERT (eh->elf.def_regular);
6422 linker_section_ptr = eh->linker_section_pointer;
6426 /* Handle local symbol. */
6427 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6429 BFD_ASSERT (is_ppc_elf (input_bfd));
6430 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6431 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6434 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6437 BFD_ASSERT (linker_section_ptr != NULL);
6439 /* Offset will always be a multiple of four, so use the bottom bit
6440 as a "written" flag. */
6441 if ((linker_section_ptr->offset & 1) == 0)
6443 bfd_put_32 (lsect->section->owner,
6444 relocation + linker_section_ptr->addend,
6445 lsect->section->contents + linker_section_ptr->offset);
6446 linker_section_ptr->offset += 1;
6449 relocation = (lsect->section->output_offset
6450 + linker_section_ptr->offset - 1
6455 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6456 lsect->name, (long) relocation, (long) relocation);
6459 /* Subtract out the addend, because it will get added back in by the normal
6461 return relocation - linker_section_ptr->addend;
6464 #define PPC_LO(v) ((v) & 0xffff)
6465 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6466 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6469 write_glink_stub (struct plt_entry *ent, asection *plt_sec,
6470 struct bfd_link_info *info)
6472 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6473 bfd *output_bfd = info->output_bfd;
6477 plt = ((ent->plt.offset & ~1)
6478 + plt_sec->output_section->vma
6479 + plt_sec->output_offset);
6480 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6486 if (ent->addend >= 32768)
6488 + ent->sec->output_section->vma
6489 + ent->sec->output_offset);
6490 else if (htab->elf.hgot != NULL)
6491 got = SYM_VAL (htab->elf.hgot);
6495 if (plt + 0x8000 < 0x10000)
6497 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6499 bfd_put_32 (output_bfd, MTCTR_11, p);
6501 bfd_put_32 (output_bfd, BCTR, p);
6503 bfd_put_32 (output_bfd, NOP, p);
6508 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6510 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6512 bfd_put_32 (output_bfd, MTCTR_11, p);
6514 bfd_put_32 (output_bfd, BCTR, p);
6520 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6522 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6524 bfd_put_32 (output_bfd, MTCTR_11, p);
6526 bfd_put_32 (output_bfd, BCTR, p);
6531 /* The RELOCATE_SECTION function is called by the ELF backend linker
6532 to handle the relocations for a section.
6534 The relocs are always passed as Rela structures; if the section
6535 actually uses Rel structures, the r_addend field will always be
6538 This function is responsible for adjust the section contents as
6539 necessary, and (if using Rela relocs and generating a
6540 relocatable output file) adjusting the reloc addend as
6543 This function does not have to worry about setting the reloc
6544 address or the reloc symbol index.
6546 LOCAL_SYMS is a pointer to the swapped in local symbols.
6548 LOCAL_SECTIONS is an array giving the section in the input file
6549 corresponding to the st_shndx field of each local symbol.
6551 The global hash table entry for the global symbols can be found
6552 via elf_sym_hashes (input_bfd).
6554 When generating relocatable output, this function must handle
6555 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6556 going to be the section symbol corresponding to the output
6557 section, which means that the addend must be adjusted
6561 ppc_elf_relocate_section (bfd *output_bfd,
6562 struct bfd_link_info *info,
6564 asection *input_section,
6566 Elf_Internal_Rela *relocs,
6567 Elf_Internal_Sym *local_syms,
6568 asection **local_sections)
6570 Elf_Internal_Shdr *symtab_hdr;
6571 struct elf_link_hash_entry **sym_hashes;
6572 struct ppc_elf_link_hash_table *htab;
6573 Elf_Internal_Rela *rel;
6574 Elf_Internal_Rela *relend;
6575 Elf_Internal_Rela outrel;
6577 asection *got2, *sreloc = NULL;
6578 bfd_vma *local_got_offsets;
6579 bfd_boolean ret = TRUE;
6580 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6581 bfd_boolean is_vxworks_tls;
6584 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6585 "%ld relocations%s",
6586 input_bfd, input_section,
6587 (long) input_section->reloc_count,
6588 (info->relocatable) ? " (relocatable)" : "");
6591 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6593 /* Initialize howto table if not already done. */
6594 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6595 ppc_elf_howto_init ();
6597 htab = ppc_elf_hash_table (info);
6598 local_got_offsets = elf_local_got_offsets (input_bfd);
6599 symtab_hdr = &elf_symtab_hdr (input_bfd);
6600 sym_hashes = elf_sym_hashes (input_bfd);
6601 /* We have to handle relocations in vxworks .tls_vars sections
6602 specially, because the dynamic loader is 'weird'. */
6603 is_vxworks_tls = (htab->is_vxworks && info->shared
6604 && !strcmp (input_section->output_section->name,
6607 relend = relocs + input_section->reloc_count;
6608 for (; rel < relend; rel++)
6610 enum elf_ppc_reloc_type r_type;
6612 bfd_reloc_status_type r;
6613 Elf_Internal_Sym *sym;
6615 struct elf_link_hash_entry *h;
6616 const char *sym_name;
6617 reloc_howto_type *howto;
6618 unsigned long r_symndx;
6620 bfd_vma branch_bit, insn, from;
6621 bfd_boolean unresolved_reloc;
6623 unsigned int tls_type, tls_mask, tls_gd;
6624 struct plt_entry **ifunc;
6626 r_type = ELF32_R_TYPE (rel->r_info);
6630 unresolved_reloc = FALSE;
6632 r_symndx = ELF32_R_SYM (rel->r_info);
6634 if (r_symndx < symtab_hdr->sh_info)
6636 sym = local_syms + r_symndx;
6637 sec = local_sections[r_symndx];
6638 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6640 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6644 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6645 r_symndx, symtab_hdr, sym_hashes,
6647 unresolved_reloc, warned);
6649 sym_name = h->root.root.string;
6652 if (sec != NULL && elf_discarded_section (sec))
6654 /* For relocs against symbols from removed linkonce sections,
6655 or sections discarded by a linker script, we just want the
6656 section contents zeroed. Avoid any special processing. */
6658 if (r_type < R_PPC_max)
6659 howto = ppc_elf_howto_table[r_type];
6660 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6666 if (info->relocatable)
6669 && r_type == R_PPC_PLTREL24
6670 && rel->r_addend >= 32768)
6672 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6673 addend specifies the GOT pointer offset within .got2. */
6674 rel->r_addend += got2->output_offset;
6679 /* TLS optimizations. Replace instruction sequences and relocs
6680 based on information we collected in tls_optimize. We edit
6681 RELOCS so that --emit-relocs will output something sensible
6682 for the final instruction stream. */
6686 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6687 else if (local_got_offsets != NULL)
6689 struct plt_entry **local_plt;
6692 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6693 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
6694 tls_mask = lgot_masks[r_symndx];
6697 /* Ensure reloc mapping code below stays sane. */
6698 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6699 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6700 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6701 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6702 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6703 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6704 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6705 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6712 case R_PPC_GOT_TPREL16:
6713 case R_PPC_GOT_TPREL16_LO:
6714 if ((tls_mask & TLS_TLS) != 0
6715 && (tls_mask & TLS_TPREL) == 0)
6718 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6720 insn |= 0x3c020000; /* addis 0,2,0 */
6721 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6722 r_type = R_PPC_TPREL16_HA;
6723 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6728 if ((tls_mask & TLS_TLS) != 0
6729 && (tls_mask & TLS_TPREL) == 0)
6732 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6733 if ((insn & ((31 << 26) | (31 << 11)))
6734 == ((31 << 26) | (2 << 11)))
6735 rtra = insn & ((1 << 26) - (1 << 16));
6736 else if ((insn & ((31 << 26) | (31 << 16)))
6737 == ((31 << 26) | (2 << 16)))
6738 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6741 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6744 else if ((insn & (31 << 1)) == 23 << 1
6745 && ((insn & (31 << 6)) < 14 << 6
6746 || ((insn & (31 << 6)) >= 16 << 6
6747 && (insn & (31 << 6)) < 24 << 6)))
6748 /* load and store indexed -> dform. */
6749 insn = (32 | ((insn >> 6) & 31)) << 26;
6750 else if ((insn & (31 << 1)) == 21 << 1
6751 && (insn & (0x1a << 6)) == 0)
6752 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6753 insn = (((58 | ((insn >> 6) & 4)) << 26)
6754 | ((insn >> 6) & 1));
6755 else if ((insn & (31 << 1)) == 21 << 1
6756 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6758 insn = (58 << 26) | 2;
6762 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6763 r_type = R_PPC_TPREL16_LO;
6764 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6766 /* Was PPC_TLS which sits on insn boundary, now
6767 PPC_TPREL16_LO which is at low-order half-word. */
6768 rel->r_offset += d_offset;
6772 case R_PPC_GOT_TLSGD16_HI:
6773 case R_PPC_GOT_TLSGD16_HA:
6774 tls_gd = TLS_TPRELGD;
6775 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6779 case R_PPC_GOT_TLSLD16_HI:
6780 case R_PPC_GOT_TLSLD16_HA:
6781 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6784 if ((tls_mask & tls_gd) != 0)
6785 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6786 + R_PPC_GOT_TPREL16);
6789 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6790 rel->r_offset -= d_offset;
6791 r_type = R_PPC_NONE;
6793 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6797 case R_PPC_GOT_TLSGD16:
6798 case R_PPC_GOT_TLSGD16_LO:
6799 tls_gd = TLS_TPRELGD;
6800 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6804 case R_PPC_GOT_TLSLD16:
6805 case R_PPC_GOT_TLSLD16_LO:
6806 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6808 unsigned int insn1, insn2;
6812 offset = (bfd_vma) -1;
6813 /* If not using the newer R_PPC_TLSGD/LD to mark
6814 __tls_get_addr calls, we must trust that the call
6815 stays with its arg setup insns, ie. that the next
6816 reloc is the __tls_get_addr call associated with
6817 the current reloc. Edit both insns. */
6818 if (input_section->has_tls_get_addr_call
6820 && branch_reloc_hash_match (input_bfd, rel + 1,
6821 htab->tls_get_addr))
6822 offset = rel[1].r_offset;
6823 if ((tls_mask & tls_gd) != 0)
6826 insn1 = bfd_get_32 (output_bfd,
6827 contents + rel->r_offset - d_offset);
6828 insn1 &= (1 << 26) - 1;
6829 insn1 |= 32 << 26; /* lwz */
6830 if (offset != (bfd_vma) -1)
6833 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6835 insn2 = 0x7c631214; /* add 3,3,2 */
6836 bfd_put_32 (output_bfd, insn2, contents + offset);
6838 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6839 + R_PPC_GOT_TPREL16);
6840 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6845 insn1 = 0x3c620000; /* addis 3,2,0 */
6848 /* Was an LD reloc. */
6850 r_symndx < symtab_hdr->sh_info;
6852 if (local_sections[r_symndx] == sec)
6854 if (r_symndx >= symtab_hdr->sh_info)
6856 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6858 rel->r_addend -= (local_syms[r_symndx].st_value
6859 + sec->output_offset
6860 + sec->output_section->vma);
6862 r_type = R_PPC_TPREL16_HA;
6863 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6864 if (offset != (bfd_vma) -1)
6866 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6867 rel[1].r_offset = offset + d_offset;
6868 rel[1].r_addend = rel->r_addend;
6869 insn2 = 0x38630000; /* addi 3,3,0 */
6870 bfd_put_32 (output_bfd, insn2, contents + offset);
6873 bfd_put_32 (output_bfd, insn1,
6874 contents + rel->r_offset - d_offset);
6877 /* We changed the symbol on an LD reloc. Start over
6878 in order to get h, sym, sec etc. right. */
6886 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6889 bfd_vma offset = rel->r_offset;
6891 if ((tls_mask & TLS_TPRELGD) != 0)
6894 r_type = R_PPC_NONE;
6895 insn2 = 0x7c631214; /* add 3,3,2 */
6900 r_type = R_PPC_TPREL16_LO;
6901 rel->r_offset += d_offset;
6902 insn2 = 0x38630000; /* addi 3,3,0 */
6904 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6905 bfd_put_32 (output_bfd, insn2, contents + offset);
6906 /* Zap the reloc on the _tls_get_addr call too. */
6907 BFD_ASSERT (offset == rel[1].r_offset);
6908 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6914 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6919 r_symndx < symtab_hdr->sh_info;
6921 if (local_sections[r_symndx] == sec)
6923 if (r_symndx >= symtab_hdr->sh_info)
6925 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6927 rel->r_addend -= (local_syms[r_symndx].st_value
6928 + sec->output_offset
6929 + sec->output_section->vma);
6931 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6932 rel->r_offset += d_offset;
6933 insn2 = 0x38630000; /* addi 3,3,0 */
6934 bfd_put_32 (output_bfd, insn2,
6935 contents + rel->r_offset - d_offset);
6936 /* Zap the reloc on the _tls_get_addr call too. */
6937 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
6938 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6946 /* Handle other relocations that tweak non-addend part of insn. */
6953 /* Branch taken prediction relocations. */
6954 case R_PPC_ADDR14_BRTAKEN:
6955 case R_PPC_REL14_BRTAKEN:
6956 branch_bit = BRANCH_PREDICT_BIT;
6959 /* Branch not taken prediction relocations. */
6960 case R_PPC_ADDR14_BRNTAKEN:
6961 case R_PPC_REL14_BRNTAKEN:
6962 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6963 insn &= ~BRANCH_PREDICT_BIT;
6966 from = (rel->r_offset
6967 + input_section->output_offset
6968 + input_section->output_section->vma);
6970 /* Invert 'y' bit if not the default. */
6971 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6972 insn ^= BRANCH_PREDICT_BIT;
6974 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6979 if (!htab->is_vxworks)
6981 struct plt_entry *ent;
6985 if (h->type == STT_GNU_IFUNC)
6986 ifunc = &h->plt.plist;
6988 else if (local_got_offsets != NULL
6989 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6991 struct plt_entry **local_plt;
6993 local_plt = (struct plt_entry **) (local_got_offsets
6994 + symtab_hdr->sh_info);
6995 ifunc = local_plt + r_symndx;
7001 || is_branch_reloc (r_type)))
7004 if (r_type == R_PPC_PLTREL24 && info->shared)
7005 addend = rel->r_addend;
7006 ent = find_plt_ent (ifunc, got2, addend);
7010 if (h == NULL && (ent->plt.offset & 1) == 0)
7012 Elf_Internal_Rela rela;
7015 rela.r_offset = (htab->iplt->output_section->vma
7016 + htab->iplt->output_offset
7018 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7019 rela.r_addend = relocation;
7020 loc = htab->reliplt->contents;
7021 loc += (htab->reliplt->reloc_count++
7022 * sizeof (Elf32_External_Rela));
7023 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7025 ent->plt.offset |= 1;
7027 if (h == NULL && (ent->glink_offset & 1) == 0)
7029 write_glink_stub (ent, htab->iplt, info);
7030 ent->glink_offset |= 1;
7033 unresolved_reloc = FALSE;
7034 if (htab->plt_type == PLT_NEW
7035 || !htab->elf.dynamic_sections_created
7037 relocation = (htab->glink->output_section->vma
7038 + htab->glink->output_offset
7039 + (ent->glink_offset & ~1));
7041 relocation = (htab->plt->output_section->vma
7042 + htab->plt->output_offset
7047 addend = rel->r_addend;
7050 if (r_type < R_PPC_max)
7051 howto = ppc_elf_howto_table[r_type];
7055 (*_bfd_error_handler)
7056 (_("%B: unknown relocation type %d for symbol %s"),
7057 input_bfd, (int) r_type, sym_name);
7059 bfd_set_error (bfd_error_bad_value);
7067 case R_PPC_EMB_MRKREF:
7068 case R_PPC_GNU_VTINHERIT:
7069 case R_PPC_GNU_VTENTRY:
7072 /* GOT16 relocations. Like an ADDR16 using the symbol's
7073 address in the GOT as relocation value instead of the
7074 symbol's value itself. Also, create a GOT entry for the
7075 symbol and put the symbol value there. */
7076 case R_PPC_GOT_TLSGD16:
7077 case R_PPC_GOT_TLSGD16_LO:
7078 case R_PPC_GOT_TLSGD16_HI:
7079 case R_PPC_GOT_TLSGD16_HA:
7080 tls_type = TLS_TLS | TLS_GD;
7083 case R_PPC_GOT_TLSLD16:
7084 case R_PPC_GOT_TLSLD16_LO:
7085 case R_PPC_GOT_TLSLD16_HI:
7086 case R_PPC_GOT_TLSLD16_HA:
7087 tls_type = TLS_TLS | TLS_LD;
7090 case R_PPC_GOT_TPREL16:
7091 case R_PPC_GOT_TPREL16_LO:
7092 case R_PPC_GOT_TPREL16_HI:
7093 case R_PPC_GOT_TPREL16_HA:
7094 tls_type = TLS_TLS | TLS_TPREL;
7097 case R_PPC_GOT_DTPREL16:
7098 case R_PPC_GOT_DTPREL16_LO:
7099 case R_PPC_GOT_DTPREL16_HI:
7100 case R_PPC_GOT_DTPREL16_HA:
7101 tls_type = TLS_TLS | TLS_DTPREL;
7105 case R_PPC_GOT16_LO:
7106 case R_PPC_GOT16_HI:
7107 case R_PPC_GOT16_HA:
7111 /* Relocation is to the entry for this symbol in the global
7117 if (htab->got == NULL)
7121 if (tls_type == (TLS_TLS | TLS_LD)
7123 || !h->def_dynamic))
7124 offp = &htab->tlsld_got.offset;
7128 dyn = htab->elf.dynamic_sections_created;
7129 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7131 && SYMBOL_REFERENCES_LOCAL (info, h)))
7132 /* This is actually a static link, or it is a
7133 -Bsymbolic link and the symbol is defined
7134 locally, or the symbol was forced to be local
7135 because of a version file. */
7140 unresolved_reloc = FALSE;
7142 offp = &h->got.offset;
7146 if (local_got_offsets == NULL)
7148 offp = &local_got_offsets[r_symndx];
7151 /* The offset must always be a multiple of 4. We use the
7152 least significant bit to record whether we have already
7153 processed this entry. */
7159 unsigned int tls_m = (tls_mask
7160 & (TLS_LD | TLS_GD | TLS_DTPREL
7161 | TLS_TPREL | TLS_TPRELGD));
7163 if (offp == &htab->tlsld_got.offset)
7169 /* We might have multiple got entries for this sym.
7170 Initialize them all. */
7175 if ((tls_m & TLS_LD) != 0)
7177 tls_ty = TLS_TLS | TLS_LD;
7180 else if ((tls_m & TLS_GD) != 0)
7182 tls_ty = TLS_TLS | TLS_GD;
7185 else if ((tls_m & TLS_DTPREL) != 0)
7187 tls_ty = TLS_TLS | TLS_DTPREL;
7188 tls_m &= ~TLS_DTPREL;
7190 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7192 tls_ty = TLS_TLS | TLS_TPREL;
7196 /* Generate relocs for the dynamic linker. */
7197 if ((info->shared || indx != 0)
7198 && (offp == &htab->tlsld_got.offset
7200 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7201 || h->root.type != bfd_link_hash_undefweak))
7203 asection *rsec = htab->relgot;
7205 outrel.r_offset = (htab->got->output_section->vma
7206 + htab->got->output_offset
7208 outrel.r_addend = 0;
7209 if (tls_ty & (TLS_LD | TLS_GD))
7211 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7212 if (tls_ty == (TLS_TLS | TLS_GD))
7214 loc = rsec->contents;
7215 loc += (rsec->reloc_count++
7216 * sizeof (Elf32_External_Rela));
7217 bfd_elf32_swap_reloca_out (output_bfd,
7219 outrel.r_offset += 4;
7221 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7224 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7225 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7226 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7227 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7229 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7230 else if (ifunc != NULL)
7231 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7233 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7234 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7236 outrel.r_addend += relocation;
7237 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7238 outrel.r_addend -= htab->elf.tls_sec->vma;
7240 loc = rsec->contents;
7241 loc += (rsec->reloc_count++
7242 * sizeof (Elf32_External_Rela));
7243 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7246 /* Init the .got section contents if we're not
7247 emitting a reloc. */
7250 bfd_vma value = relocation;
7252 if (tls_ty == (TLS_TLS | TLS_LD))
7254 else if (tls_ty != 0)
7256 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7257 if (tls_ty == (TLS_TLS | TLS_TPREL))
7258 value += DTP_OFFSET - TP_OFFSET;
7260 if (tls_ty == (TLS_TLS | TLS_GD))
7262 bfd_put_32 (output_bfd, value,
7263 htab->got->contents + off + 4);
7267 bfd_put_32 (output_bfd, value,
7268 htab->got->contents + off);
7272 if (tls_ty & (TLS_LD | TLS_GD))
7281 if (off >= (bfd_vma) -2)
7284 if ((tls_type & TLS_TLS) != 0)
7286 if (tls_type != (TLS_TLS | TLS_LD))
7288 if ((tls_mask & TLS_LD) != 0
7290 || !h->def_dynamic))
7292 if (tls_type != (TLS_TLS | TLS_GD))
7294 if ((tls_mask & TLS_GD) != 0)
7296 if (tls_type != (TLS_TLS | TLS_DTPREL))
7298 if ((tls_mask & TLS_DTPREL) != 0)
7305 relocation = (htab->got->output_section->vma
7306 + htab->got->output_offset
7308 - SYM_VAL (htab->elf.hgot));
7310 /* Addends on got relocations don't make much sense.
7311 x+off@got is actually x@got+off, and since the got is
7312 generated by a hash table traversal, the value in the
7313 got at entry m+n bears little relation to the entry m. */
7315 (*_bfd_error_handler)
7316 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7319 (long) rel->r_offset,
7325 /* Relocations that need no special processing. */
7326 case R_PPC_LOCAL24PC:
7327 /* It makes no sense to point a local relocation
7328 at a symbol not in this object. */
7329 if (unresolved_reloc)
7331 if (! (*info->callbacks->undefined_symbol) (info,
7332 h->root.root.string,
7342 case R_PPC_DTPREL16:
7343 case R_PPC_DTPREL16_LO:
7344 case R_PPC_DTPREL16_HI:
7345 case R_PPC_DTPREL16_HA:
7346 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7349 /* Relocations that may need to be propagated if this is a shared
7352 case R_PPC_TPREL16_LO:
7353 case R_PPC_TPREL16_HI:
7354 case R_PPC_TPREL16_HA:
7355 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7356 /* The TPREL16 relocs shouldn't really be used in shared
7357 libs as they will result in DT_TEXTREL being set, but
7358 support them anyway. */
7362 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7365 case R_PPC_DTPREL32:
7366 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7369 case R_PPC_DTPMOD32:
7375 case R_PPC_REL16_LO:
7376 case R_PPC_REL16_HI:
7377 case R_PPC_REL16_HA:
7381 if (h == NULL || h == htab->elf.hgot)
7387 case R_PPC_ADDR16_LO:
7388 case R_PPC_ADDR16_HI:
7389 case R_PPC_ADDR16_HA:
7396 case R_PPC_REL14_BRTAKEN:
7397 case R_PPC_REL14_BRNTAKEN:
7398 /* If these relocations are not to a named symbol, they can be
7399 handled right here, no need to bother the dynamic linker. */
7400 if (SYMBOL_CALLS_LOCAL (info, h)
7401 || h == htab->elf.hgot)
7407 case R_PPC_ADDR14_BRTAKEN:
7408 case R_PPC_ADDR14_BRNTAKEN:
7409 if (h != NULL && !info->shared)
7414 if ((input_section->flags & SEC_ALLOC) == 0
7420 && ((h->root.type == bfd_link_hash_undefined
7421 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7422 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7423 || (h->root.type == bfd_link_hash_undefweak
7424 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
7425 && (must_be_dyn_reloc (info, r_type)
7426 || !SYMBOL_CALLS_LOCAL (info, h)))
7427 || (ELIMINATE_COPY_RELOCS
7432 && !h->def_regular))
7437 fprintf (stderr, "ppc_elf_relocate_section needs to "
7438 "create relocation for %s\n",
7439 (h && h->root.root.string
7440 ? h->root.root.string : "<unknown>"));
7443 /* When generating a shared object, these relocations
7444 are copied into the output file to be resolved at run
7448 sreloc = elf_section_data (input_section)->sreloc;
7449 if (!htab->elf.dynamic_sections_created)
7450 sreloc = htab->reliplt;
7457 _bfd_elf_section_offset (output_bfd, info, input_section,
7459 if (outrel.r_offset == (bfd_vma) -1
7460 || outrel.r_offset == (bfd_vma) -2)
7461 skip = (int) outrel.r_offset;
7462 outrel.r_offset += (input_section->output_section->vma
7463 + input_section->output_offset);
7466 memset (&outrel, 0, sizeof outrel);
7468 && (h->root.type == bfd_link_hash_undefined
7469 || h->root.type == bfd_link_hash_undefweak))
7470 || !SYMBOL_REFERENCES_LOCAL (info, h))
7472 unresolved_reloc = FALSE;
7473 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7474 outrel.r_addend = rel->r_addend;
7478 outrel.r_addend = relocation + rel->r_addend;
7480 if (r_type != R_PPC_ADDR32)
7486 /* If we get here when building a static
7487 executable, then the libc startup function
7488 responsible for applying indirect function
7489 relocations is going to complain about
7491 If we get here when building a dynamic
7492 executable, it will be because we have
7493 a text relocation. The dynamic loader
7494 will set the text segment writable and
7495 non-executable to apply text relocations.
7496 So we'll segfault when trying to run the
7497 indirection function to resolve the reloc. */
7498 (*_bfd_error_handler)
7499 (_("%B(%A+0x%lx): relocation %s for indirect "
7500 "function %s unsupported"),
7503 (long) rel->r_offset,
7508 else if (r_symndx == 0 || bfd_is_abs_section (sec))
7510 else if (sec == NULL || sec->owner == NULL)
7512 bfd_set_error (bfd_error_bad_value);
7519 /* We are turning this relocation into one
7520 against a section symbol. It would be
7521 proper to subtract the symbol's value,
7522 osec->vma, from the emitted reloc addend,
7523 but ld.so expects buggy relocs.
7524 FIXME: Why not always use a zero index? */
7525 osec = sec->output_section;
7526 indx = elf_section_data (osec)->dynindx;
7529 osec = htab->elf.text_index_section;
7530 indx = elf_section_data (osec)->dynindx;
7532 BFD_ASSERT (indx != 0);
7535 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7536 indx, osec->name, osec->flags,
7537 h->root.root.string);
7541 outrel.r_info = ELF32_R_INFO (indx, r_type);
7543 else if (ifunc != NULL)
7544 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7546 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7549 loc = sreloc->contents;
7550 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7551 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7556 /* This reloc will be computed at runtime. We clear the memory
7557 so that it contains predictable value. */
7559 && ((input_section->flags & SEC_ALLOC) != 0
7560 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7562 relocation = howto->pc_relative ? outrel.r_offset : 0;
7569 case R_PPC_RELAX32PC_PLT:
7570 case R_PPC_RELAX32_PLT:
7573 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7574 info->shared ? addend : 0);
7575 if (htab->plt_type == PLT_NEW)
7576 relocation = (htab->glink->output_section->vma
7577 + htab->glink->output_offset
7578 + ent->glink_offset);
7580 relocation = (htab->plt->output_section->vma
7581 + htab->plt->output_offset
7584 if (r_type == R_PPC_RELAX32_PLT)
7588 case R_PPC_RELAX32PC:
7589 relocation -= (input_section->output_section->vma
7590 + input_section->output_offset
7591 + rel->r_offset - 4);
7600 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7601 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7603 /* We're clearing the bits for R_PPC_ADDR16_HA
7604 and R_PPC_ADDR16_LO here. */
7608 /* t0 is HA, t1 is LO */
7609 relocation += addend;
7610 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7611 t1 |= relocation & 0xffff;
7613 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7614 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7616 /* Rewrite the reloc and convert one of the trailing nop
7617 relocs to describe this relocation. */
7618 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7619 /* The relocs are at the bottom 2 bytes */
7620 rel[0].r_offset += 2;
7621 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7622 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7623 rel[1].r_offset += 4;
7624 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7629 /* Indirect .sdata relocation. */
7630 case R_PPC_EMB_SDAI16:
7631 BFD_ASSERT (htab->sdata[0].section != NULL);
7633 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7634 h, relocation, rel);
7637 /* Indirect .sdata2 relocation. */
7638 case R_PPC_EMB_SDA2I16:
7639 BFD_ASSERT (htab->sdata[1].section != NULL);
7641 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7642 h, relocation, rel);
7645 /* Handle the TOC16 reloc. We want to use the offset within the .got
7646 section, not the actual VMA. This is appropriate when generating
7647 an embedded ELF object, for which the .got section acts like the
7648 AIX .toc section. */
7649 case R_PPC_TOC16: /* phony GOT16 relocations */
7650 if (sec == NULL || sec->output_section == NULL)
7652 unresolved_reloc = TRUE;
7655 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7656 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7658 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7661 case R_PPC_PLTREL24:
7662 if (h == NULL || ifunc != NULL)
7664 /* Relocation is to the entry for this symbol in the
7665 procedure linkage table. */
7667 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7668 info->shared ? addend : 0);
7671 || htab->plt == NULL)
7673 /* We didn't make a PLT entry for this symbol. This
7674 happens when statically linking PIC code, or when
7675 using -Bsymbolic. */
7679 unresolved_reloc = FALSE;
7680 if (htab->plt_type == PLT_NEW)
7681 relocation = (htab->glink->output_section->vma
7682 + htab->glink->output_offset
7683 + ent->glink_offset);
7685 relocation = (htab->plt->output_section->vma
7686 + htab->plt->output_offset
7691 /* Relocate against _SDA_BASE_. */
7692 case R_PPC_SDAREL16:
7696 if (sec == NULL || sec->output_section == NULL)
7698 unresolved_reloc = TRUE;
7702 name = bfd_get_section_name (abfd, sec->output_section);
7703 if (! ((CONST_STRNEQ (name, ".sdata")
7704 && (name[6] == 0 || name[6] == '.'))
7705 || (CONST_STRNEQ (name, ".sbss")
7706 && (name[5] == 0 || name[5] == '.'))))
7708 (*_bfd_error_handler)
7709 (_("%B: the target (%s) of a %s relocation is "
7710 "in the wrong output section (%s)"),
7716 addend -= SYM_VAL (htab->sdata[0].sym);
7720 /* Relocate against _SDA2_BASE_. */
7721 case R_PPC_EMB_SDA2REL:
7725 if (sec == NULL || sec->output_section == NULL)
7727 unresolved_reloc = TRUE;
7731 name = bfd_get_section_name (abfd, sec->output_section);
7732 if (! (CONST_STRNEQ (name, ".sdata2")
7733 || CONST_STRNEQ (name, ".sbss2")))
7735 (*_bfd_error_handler)
7736 (_("%B: the target (%s) of a %s relocation is "
7737 "in the wrong output section (%s)"),
7743 bfd_set_error (bfd_error_bad_value);
7747 addend -= SYM_VAL (htab->sdata[1].sym);
7751 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7752 case R_PPC_EMB_SDA21:
7753 case R_PPC_EMB_RELSDA:
7758 if (sec == NULL || sec->output_section == NULL)
7760 unresolved_reloc = TRUE;
7764 name = bfd_get_section_name (abfd, sec->output_section);
7765 if (((CONST_STRNEQ (name, ".sdata")
7766 && (name[6] == 0 || name[6] == '.'))
7767 || (CONST_STRNEQ (name, ".sbss")
7768 && (name[5] == 0 || name[5] == '.'))))
7771 addend -= SYM_VAL (htab->sdata[0].sym);
7773 else if (CONST_STRNEQ (name, ".sdata2")
7774 || CONST_STRNEQ (name, ".sbss2"))
7777 addend -= SYM_VAL (htab->sdata[1].sym);
7779 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7780 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7786 (*_bfd_error_handler)
7787 (_("%B: the target (%s) of a %s relocation is "
7788 "in the wrong output section (%s)"),
7794 bfd_set_error (bfd_error_bad_value);
7799 if (r_type == R_PPC_EMB_SDA21)
7800 { /* fill in register field */
7801 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7802 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7803 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7808 /* Relocate against the beginning of the section. */
7810 case R_PPC_SECTOFF_LO:
7811 case R_PPC_SECTOFF_HI:
7812 case R_PPC_SECTOFF_HA:
7813 if (sec == NULL || sec->output_section == NULL)
7815 unresolved_reloc = TRUE;
7818 addend -= sec->output_section->vma;
7821 /* Negative relocations. */
7822 case R_PPC_EMB_NADDR32:
7823 case R_PPC_EMB_NADDR16:
7824 case R_PPC_EMB_NADDR16_LO:
7825 case R_PPC_EMB_NADDR16_HI:
7826 case R_PPC_EMB_NADDR16_HA:
7827 addend -= 2 * relocation;
7831 case R_PPC_GLOB_DAT:
7832 case R_PPC_JMP_SLOT:
7833 case R_PPC_RELATIVE:
7834 case R_PPC_IRELATIVE:
7836 case R_PPC_PLTREL32:
7837 case R_PPC_PLT16_LO:
7838 case R_PPC_PLT16_HI:
7839 case R_PPC_PLT16_HA:
7841 case R_PPC_EMB_RELSEC16:
7842 case R_PPC_EMB_RELST_LO:
7843 case R_PPC_EMB_RELST_HI:
7844 case R_PPC_EMB_RELST_HA:
7845 case R_PPC_EMB_BIT_FLD:
7846 (*_bfd_error_handler)
7847 (_("%B: relocation %s is not yet supported for symbol %s."),
7852 bfd_set_error (bfd_error_invalid_operation);
7857 /* Do any further special processing. */
7863 case R_PPC_ADDR16_HA:
7864 case R_PPC_REL16_HA:
7865 case R_PPC_SECTOFF_HA:
7866 case R_PPC_TPREL16_HA:
7867 case R_PPC_DTPREL16_HA:
7868 case R_PPC_EMB_NADDR16_HA:
7869 case R_PPC_EMB_RELST_HA:
7870 /* It's just possible that this symbol is a weak symbol
7871 that's not actually defined anywhere. In that case,
7872 'sec' would be NULL, and we should leave the symbol
7873 alone (it will be set to zero elsewhere in the link). */
7878 case R_PPC_PLT16_HA:
7879 case R_PPC_GOT16_HA:
7880 case R_PPC_GOT_TLSGD16_HA:
7881 case R_PPC_GOT_TLSLD16_HA:
7882 case R_PPC_GOT_TPREL16_HA:
7883 case R_PPC_GOT_DTPREL16_HA:
7884 /* Add 0x10000 if sign bit in 0:15 is set.
7885 Bits 0:15 are not used. */
7891 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7892 "offset = %ld, addend = %ld\n",
7897 (long) rel->r_offset,
7901 if (unresolved_reloc
7902 && !((input_section->flags & SEC_DEBUGGING) != 0
7905 (*_bfd_error_handler)
7906 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7909 (long) rel->r_offset,
7915 r = _bfd_final_link_relocate (howto,
7923 if (r != bfd_reloc_ok)
7925 if (r == bfd_reloc_overflow)
7930 && h->root.type == bfd_link_hash_undefweak
7931 && howto->pc_relative)
7933 /* Assume this is a call protected by other code that
7934 detect the symbol is undefined. If this is the case,
7935 we can safely ignore the overflow. If not, the
7936 program is hosed anyway, and a little warning isn't
7942 if (! (*info->callbacks->reloc_overflow) (info,
7943 (h ? &h->root : NULL),
7954 (*_bfd_error_handler)
7955 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7956 input_bfd, input_section,
7957 (long) rel->r_offset, howto->name, sym_name, (int) r);
7964 fprintf (stderr, "\n");
7970 /* Finish up dynamic symbol handling. We set the contents of various
7971 dynamic sections here. */
7974 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7975 struct bfd_link_info *info,
7976 struct elf_link_hash_entry *h,
7977 Elf_Internal_Sym *sym)
7979 struct ppc_elf_link_hash_table *htab;
7980 struct plt_entry *ent;
7981 bfd_boolean doneone;
7984 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7985 h->root.root.string);
7988 htab = ppc_elf_hash_table (info);
7989 BFD_ASSERT (htab->elf.dynobj != NULL);
7992 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7993 if (ent->plt.offset != (bfd_vma) -1)
7997 Elf_Internal_Rela rela;
7999 bfd_vma reloc_index;
8001 if (htab->plt_type == PLT_NEW
8002 || !htab->elf.dynamic_sections_created
8003 || h->dynindx == -1)
8004 reloc_index = ent->plt.offset / 4;
8007 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8008 / htab->plt_slot_size);
8009 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
8010 && htab->plt_type == PLT_OLD)
8011 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8014 /* This symbol has an entry in the procedure linkage table.
8016 if (htab->plt_type == PLT_VXWORKS
8017 && htab->elf.dynamic_sections_created
8018 && h->dynindx != -1)
8021 const bfd_vma *plt_entry;
8023 /* The first three entries in .got.plt are reserved. */
8024 got_offset = (reloc_index + 3) * 4;
8026 /* Use the right PLT. */
8027 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8028 : ppc_elf_vxworks_plt_entry;
8030 /* Fill in the .plt on VxWorks. */
8033 bfd_put_32 (output_bfd,
8034 plt_entry[0] | PPC_HA (got_offset),
8035 htab->plt->contents + ent->plt.offset + 0);
8036 bfd_put_32 (output_bfd,
8037 plt_entry[1] | PPC_LO (got_offset),
8038 htab->plt->contents + ent->plt.offset + 4);
8042 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8044 bfd_put_32 (output_bfd,
8045 plt_entry[0] | PPC_HA (got_loc),
8046 htab->plt->contents + ent->plt.offset + 0);
8047 bfd_put_32 (output_bfd,
8048 plt_entry[1] | PPC_LO (got_loc),
8049 htab->plt->contents + ent->plt.offset + 4);
8052 bfd_put_32 (output_bfd, plt_entry[2],
8053 htab->plt->contents + ent->plt.offset + 8);
8054 bfd_put_32 (output_bfd, plt_entry[3],
8055 htab->plt->contents + ent->plt.offset + 12);
8057 /* This instruction is an immediate load. The value loaded is
8058 the byte offset of the R_PPC_JMP_SLOT relocation from the
8059 start of the .rela.plt section. The value is stored in the
8060 low-order 16 bits of the load instruction. */
8061 /* NOTE: It appears that this is now an index rather than a
8062 prescaled offset. */
8063 bfd_put_32 (output_bfd,
8064 plt_entry[4] | reloc_index,
8065 htab->plt->contents + ent->plt.offset + 16);
8066 /* This instruction is a PC-relative branch whose target is
8067 the start of the PLT section. The address of this branch
8068 instruction is 20 bytes beyond the start of this PLT entry.
8069 The address is encoded in bits 6-29, inclusive. The value
8070 stored is right-shifted by two bits, permitting a 26-bit
8072 bfd_put_32 (output_bfd,
8074 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8075 htab->plt->contents + ent->plt.offset + 20);
8076 bfd_put_32 (output_bfd, plt_entry[6],
8077 htab->plt->contents + ent->plt.offset + 24);
8078 bfd_put_32 (output_bfd, plt_entry[7],
8079 htab->plt->contents + ent->plt.offset + 28);
8081 /* Fill in the GOT entry corresponding to this PLT slot with
8082 the address immediately after the the "bctr" instruction
8083 in this PLT entry. */
8084 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8085 + htab->plt->output_offset
8086 + ent->plt.offset + 16),
8087 htab->sgotplt->contents + got_offset);
8091 /* Fill in a couple of entries in .rela.plt.unloaded. */
8092 loc = htab->srelplt2->contents
8093 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8094 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8095 * sizeof (Elf32_External_Rela));
8097 /* Provide the @ha relocation for the first instruction. */
8098 rela.r_offset = (htab->plt->output_section->vma
8099 + htab->plt->output_offset
8100 + ent->plt.offset + 2);
8101 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8103 rela.r_addend = got_offset;
8104 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8105 loc += sizeof (Elf32_External_Rela);
8107 /* Provide the @l relocation for the second instruction. */
8108 rela.r_offset = (htab->plt->output_section->vma
8109 + htab->plt->output_offset
8110 + ent->plt.offset + 6);
8111 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8113 rela.r_addend = got_offset;
8114 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8115 loc += sizeof (Elf32_External_Rela);
8117 /* Provide a relocation for the GOT entry corresponding to this
8118 PLT slot. Point it at the middle of the .plt entry. */
8119 rela.r_offset = (htab->sgotplt->output_section->vma
8120 + htab->sgotplt->output_offset
8122 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8124 rela.r_addend = ent->plt.offset + 16;
8125 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8128 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8129 In particular, the offset for the relocation is not the
8130 address of the PLT entry for this function, as specified
8131 by the ABI. Instead, the offset is set to the address of
8132 the GOT slot for this function. See EABI 4.4.4.1. */
8133 rela.r_offset = (htab->sgotplt->output_section->vma
8134 + htab->sgotplt->output_offset
8140 asection *splt = htab->plt;
8141 if (!htab->elf.dynamic_sections_created
8142 || h->dynindx == -1)
8145 rela.r_offset = (splt->output_section->vma
8146 + splt->output_offset
8148 if (htab->plt_type == PLT_OLD
8149 || !htab->elf.dynamic_sections_created
8150 || h->dynindx == -1)
8152 /* We don't need to fill in the .plt. The ppc dynamic
8153 linker will fill it in. */
8157 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8158 + htab->glink->output_section->vma
8159 + htab->glink->output_offset);
8160 bfd_put_32 (output_bfd, val,
8161 splt->contents + ent->plt.offset);
8165 /* Fill in the entry in the .rela.plt section. */
8167 if (!htab->elf.dynamic_sections_created
8168 || h->dynindx == -1)
8170 BFD_ASSERT (h->type == STT_GNU_IFUNC
8172 && (h->root.type == bfd_link_hash_defined
8173 || h->root.type == bfd_link_hash_defweak));
8174 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8175 rela.r_addend = SYM_VAL (h);
8178 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
8180 if (!htab->elf.dynamic_sections_created
8181 || h->dynindx == -1)
8182 loc = (htab->reliplt->contents
8183 + (htab->reliplt->reloc_count++
8184 * sizeof (Elf32_External_Rela)));
8186 loc = (htab->relplt->contents
8187 + reloc_index * sizeof (Elf32_External_Rela));
8188 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8190 if (!h->def_regular)
8192 /* Mark the symbol as undefined, rather than as
8193 defined in the .plt section. Leave the value if
8194 there were any relocations where pointer equality
8195 matters (this is a clue for the dynamic linker, to
8196 make function pointer comparisons work between an
8197 application and shared library), otherwise set it
8199 sym->st_shndx = SHN_UNDEF;
8200 if (!h->pointer_equality_needed)
8202 else if (!h->ref_regular_nonweak)
8204 /* This breaks function pointer comparisons, but
8205 that is better than breaking tests for a NULL
8206 function pointer. */
8210 else if (h->type == STT_GNU_IFUNC
8213 /* Set the value of ifunc symbols in a non-pie
8214 executable to the glink entry. This is to avoid
8215 text relocations. We can't do this for ifunc in
8216 allocate_dynrelocs, as we do for normal dynamic
8217 function symbols with plt entries, because we need
8218 to keep the original value around for the ifunc
8220 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8221 (output_bfd, htab->glink->output_section));
8222 sym->st_value = (ent->glink_offset +
8223 htab->glink->output_offset
8224 + htab->glink->output_section->vma);
8229 if (htab->plt_type == PLT_NEW
8230 || !htab->elf.dynamic_sections_created
8231 || h->dynindx == -1)
8233 asection *splt = htab->plt;
8234 if (!htab->elf.dynamic_sections_created
8235 || h->dynindx == -1)
8238 write_glink_stub (ent, splt, info);
8241 /* We only need one non-PIC glink stub. */
8251 Elf_Internal_Rela rela;
8254 /* This symbols needs a copy reloc. Set it up. */
8257 fprintf (stderr, ", copy");
8260 BFD_ASSERT (h->dynindx != -1);
8262 if (ppc_elf_hash_entry (h)->has_sda_refs)
8266 BFD_ASSERT (s != NULL);
8268 rela.r_offset = SYM_VAL (h);
8269 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8271 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8272 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8276 fprintf (stderr, "\n");
8279 /* Mark some specially defined symbols as absolute. */
8280 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8281 || (!htab->is_vxworks
8282 && (h == htab->elf.hgot
8283 || strcmp (h->root.root.string,
8284 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8285 sym->st_shndx = SHN_ABS;
8290 static enum elf_reloc_type_class
8291 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8293 switch (ELF32_R_TYPE (rela->r_info))
8295 case R_PPC_RELATIVE:
8296 return reloc_class_relative;
8299 case R_PPC_JMP_SLOT:
8300 return reloc_class_plt;
8302 return reloc_class_copy;
8304 return reloc_class_normal;
8308 /* Finish up the dynamic sections. */
8311 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8312 struct bfd_link_info *info)
8316 struct ppc_elf_link_hash_table *htab;
8319 bfd_boolean ret = TRUE;
8322 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8325 htab = ppc_elf_hash_table (info);
8326 dynobj = elf_hash_table (info)->dynobj;
8327 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8328 if (htab->is_vxworks)
8329 splt = bfd_get_section_by_name (dynobj, ".plt");
8334 if (htab->elf.hgot != NULL)
8335 got = SYM_VAL (htab->elf.hgot);
8337 if (htab->elf.dynamic_sections_created)
8339 Elf32_External_Dyn *dyncon, *dynconend;
8341 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
8343 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8344 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8345 for (; dyncon < dynconend; dyncon++)
8347 Elf_Internal_Dyn dyn;
8350 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8355 if (htab->is_vxworks)
8359 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8363 dyn.d_un.d_val = htab->relplt->size;
8368 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8372 dyn.d_un.d_ptr = got;
8376 if (htab->is_vxworks)
8379 dyn.d_un.d_ptr -= htab->relplt->size;
8385 if (htab->is_vxworks
8386 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8391 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8395 if (htab->got != NULL)
8397 if (htab->elf.hgot->root.u.def.section == htab->got
8398 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
8400 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
8402 p += htab->elf.hgot->root.u.def.value;
8403 if (htab->plt_type == PLT_OLD)
8405 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8406 so that a function can easily find the address of
8407 _GLOBAL_OFFSET_TABLE_. */
8408 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8409 < htab->elf.hgot->root.u.def.section->size);
8410 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8415 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8416 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8417 < htab->elf.hgot->root.u.def.section->size);
8418 bfd_put_32 (output_bfd, val, p);
8423 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8424 htab->elf.hgot->root.root.string,
8425 (htab->sgotplt != NULL
8426 ? htab->sgotplt->name : htab->got->name));
8427 bfd_set_error (bfd_error_bad_value);
8431 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8434 /* Fill in the first entry in the VxWorks procedure linkage table. */
8435 if (splt && splt->size > 0)
8437 /* Use the right PLT. */
8438 static const bfd_vma *plt_entry = NULL;
8439 plt_entry = info->shared ?
8440 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
8444 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
8446 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
8447 splt->contents + 0);
8448 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
8449 splt->contents + 4);
8453 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8454 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8456 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8457 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8458 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8459 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8460 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8461 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8465 Elf_Internal_Rela rela;
8468 loc = htab->srelplt2->contents;
8470 /* Output the @ha relocation for the first instruction. */
8471 rela.r_offset = (htab->plt->output_section->vma
8472 + htab->plt->output_offset
8474 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8476 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8477 loc += sizeof (Elf32_External_Rela);
8479 /* Output the @l relocation for the second instruction. */
8480 rela.r_offset = (htab->plt->output_section->vma
8481 + htab->plt->output_offset
8483 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8485 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8486 loc += sizeof (Elf32_External_Rela);
8488 /* Fix up the remaining relocations. They may have the wrong
8489 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8490 in which symbols were output. */
8491 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8493 Elf_Internal_Rela rel;
8495 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8496 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8497 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8498 loc += sizeof (Elf32_External_Rela);
8500 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8501 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8502 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8503 loc += sizeof (Elf32_External_Rela);
8505 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8506 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8507 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8508 loc += sizeof (Elf32_External_Rela);
8513 if (htab->glink != NULL
8514 && htab->glink->contents != NULL
8515 && htab->elf.dynamic_sections_created)
8518 unsigned char *endp;
8523 * PIC glink code is the following:
8525 * # ith PLT code stub.
8526 * addis 11,30,(plt+(i-1)*4-got)@ha
8527 * lwz 11,(plt+(i-1)*4-got)@l(11)
8531 * # A table of branches, one for each plt entry.
8532 * # The idea is that the plt call stub loads ctr and r11 with these
8533 * # addresses, so (r11 - res_0) gives the plt index * 4.
8534 * res_0: b PLTresolve
8535 * res_1: b PLTresolve
8537 * # Some number of entries towards the end can be nops
8543 * addis 11,11,(1f-res_0)@ha
8546 * 1: addi 11,11,(1b-res_0)@l
8549 * sub 11,11,12 # r11 = index * 4
8550 * addis 12,12,(got+4-1b)@ha
8551 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8552 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8555 * add 11,0,11 # r11 = index * 12 = reloc offset.
8558 static const unsigned int pic_plt_resolve[] =
8579 * Non-PIC glink code is a little simpler.
8581 * # ith PLT code stub.
8582 * lis 11,(plt+(i-1)*4)@ha
8583 * lwz 11,(plt+(i-1)*4)@l(11)
8587 * The branch table is the same, then comes
8591 * addis 11,11,(-res_0)@ha
8592 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8593 * addi 11,11,(-res_0)@l # r11 = index * 4
8596 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8597 * add 11,0,11 # r11 = index * 12 = reloc offset.
8600 static const unsigned int plt_resolve[] =
8620 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8622 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8625 /* Build the branch table, one for each plt entry (less one),
8626 and perhaps some padding. */
8627 p = htab->glink->contents;
8628 p += htab->glink_pltresolve;
8629 endp = htab->glink->contents;
8630 endp += htab->glink->size - GLINK_PLTRESOLVE;
8631 while (p < endp - 8 * 4)
8633 bfd_put_32 (output_bfd, B + endp - p, p);
8638 bfd_put_32 (output_bfd, NOP, p);
8642 res0 = (htab->glink_pltresolve
8643 + htab->glink->output_section->vma
8644 + htab->glink->output_offset);
8646 /* Last comes the PLTresolve stub. */
8651 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8653 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8656 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8658 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8659 + htab->glink->output_section->vma
8660 + htab->glink->output_offset);
8662 bfd_put_32 (output_bfd,
8663 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8664 bfd_put_32 (output_bfd,
8665 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8666 bfd_put_32 (output_bfd,
8667 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8668 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8670 bfd_put_32 (output_bfd,
8671 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8672 bfd_put_32 (output_bfd,
8673 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8677 bfd_put_32 (output_bfd,
8678 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8679 bfd_put_32 (output_bfd,
8680 LWZ_12_12 + 4, p + 9*4);
8685 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8687 bfd_put_32 (output_bfd, plt_resolve[i], p);
8690 p -= 4 * ARRAY_SIZE (plt_resolve);
8692 bfd_put_32 (output_bfd,
8693 LIS_12 + PPC_HA (got + 4), p + 0*4);
8694 bfd_put_32 (output_bfd,
8695 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8696 bfd_put_32 (output_bfd,
8697 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8698 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8700 bfd_put_32 (output_bfd,
8701 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8702 bfd_put_32 (output_bfd,
8703 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8707 bfd_put_32 (output_bfd,
8708 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8709 bfd_put_32 (output_bfd,
8710 LWZ_12_12 + 4, p + 6*4);
8718 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8719 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8720 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8721 #define TARGET_BIG_NAME "elf32-powerpc"
8722 #define ELF_ARCH bfd_arch_powerpc
8723 #define ELF_MACHINE_CODE EM_PPC
8724 #ifdef __QNXTARGET__
8725 #define ELF_MAXPAGESIZE 0x1000
8727 #define ELF_MAXPAGESIZE 0x10000
8729 #define ELF_MINPAGESIZE 0x1000
8730 #define ELF_COMMONPAGESIZE 0x1000
8731 #define elf_info_to_howto ppc_elf_info_to_howto
8733 #ifdef EM_CYGNUS_POWERPC
8734 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8738 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8741 #define elf_backend_plt_not_loaded 1
8742 #define elf_backend_can_gc_sections 1
8743 #define elf_backend_can_refcount 1
8744 #define elf_backend_rela_normal 1
8746 #define bfd_elf32_mkobject ppc_elf_mkobject
8747 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8748 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8749 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8750 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8751 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8752 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8753 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8755 #define elf_backend_object_p ppc_elf_object_p
8756 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8757 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8758 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8759 #define elf_backend_relocate_section ppc_elf_relocate_section
8760 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8761 #define elf_backend_check_relocs ppc_elf_check_relocs
8762 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8763 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8764 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8765 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8766 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8767 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8768 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8769 #define elf_backend_fake_sections ppc_elf_fake_sections
8770 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8771 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8772 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8773 #define elf_backend_write_core_note ppc_elf_write_core_note
8774 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8775 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8776 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8777 #define elf_backend_write_section ppc_elf_write_section
8778 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8779 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8780 #define elf_backend_action_discarded ppc_elf_action_discarded
8781 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8782 #define elf_backend_post_process_headers _bfd_elf_set_osabi
8784 #include "elf32-target.h"
8786 /* VxWorks Target */
8788 #undef TARGET_LITTLE_SYM
8789 #undef TARGET_LITTLE_NAME
8791 #undef TARGET_BIG_SYM
8792 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8793 #undef TARGET_BIG_NAME
8794 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8796 /* VxWorks uses the elf default section flags for .plt. */
8797 static const struct bfd_elf_special_section *
8798 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
8800 if (sec->name == NULL)
8803 if (strcmp (sec->name, ".plt") == 0)
8804 return _bfd_elf_get_sec_type_attr (abfd, sec);
8806 return ppc_elf_get_sec_type_attr (abfd, sec);
8809 /* Like ppc_elf_link_hash_table_create, but overrides
8810 appropriately for VxWorks. */
8811 static struct bfd_link_hash_table *
8812 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8814 struct bfd_link_hash_table *ret;
8816 ret = ppc_elf_link_hash_table_create (abfd);
8819 struct ppc_elf_link_hash_table *htab
8820 = (struct ppc_elf_link_hash_table *)ret;
8821 htab->is_vxworks = 1;
8822 htab->plt_type = PLT_VXWORKS;
8823 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8824 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8825 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8830 /* Tweak magic VxWorks symbols as they are loaded. */
8832 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8833 struct bfd_link_info *info,
8834 Elf_Internal_Sym *sym,
8835 const char **namep ATTRIBUTE_UNUSED,
8836 flagword *flagsp ATTRIBUTE_UNUSED,
8840 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8844 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8848 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8850 ppc_elf_final_write_processing(abfd, linker);
8851 elf_vxworks_final_write_processing(abfd, linker);
8854 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8856 #undef elf_backend_want_plt_sym
8857 #define elf_backend_want_plt_sym 1
8858 #undef elf_backend_want_got_plt
8859 #define elf_backend_want_got_plt 1
8860 #undef elf_backend_got_symbol_offset
8861 #define elf_backend_got_symbol_offset 0
8862 #undef elf_backend_plt_not_loaded
8863 #define elf_backend_plt_not_loaded 0
8864 #undef elf_backend_plt_readonly
8865 #define elf_backend_plt_readonly 1
8866 #undef elf_backend_got_header_size
8867 #define elf_backend_got_header_size 12
8869 #undef bfd_elf32_get_synthetic_symtab
8871 #undef bfd_elf32_bfd_link_hash_table_create
8872 #define bfd_elf32_bfd_link_hash_table_create \
8873 ppc_elf_vxworks_link_hash_table_create
8874 #undef elf_backend_add_symbol_hook
8875 #define elf_backend_add_symbol_hook \
8876 ppc_elf_vxworks_add_symbol_hook
8877 #undef elf_backend_link_output_symbol_hook
8878 #define elf_backend_link_output_symbol_hook \
8879 elf_vxworks_link_output_symbol_hook
8880 #undef elf_backend_final_write_processing
8881 #define elf_backend_final_write_processing \
8882 ppc_elf_vxworks_final_write_processing
8883 #undef elf_backend_get_sec_type_attr
8884 #define elf_backend_get_sec_type_attr \
8885 ppc_elf_vxworks_get_sec_type_attr
8886 #undef elf_backend_emit_relocs
8887 #define elf_backend_emit_relocs \
8888 elf_vxworks_emit_relocs
8891 #define elf32_bed ppc_elf_vxworks_bed
8892 #undef elf_backend_post_process_headers
8894 #include "elf32-target.h"
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