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))
3585 /* Indirect .sdata relocation. */
3586 case R_PPC_EMB_SDAI16:
3589 bad_shared_reloc (abfd, r_type);
3592 if (htab->sdata[0].section == NULL
3593 && !ppc_elf_create_linker_section (abfd, info, 0,
3596 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3601 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3602 h->non_got_ref = TRUE;
3606 /* Indirect .sdata2 relocation. */
3607 case R_PPC_EMB_SDA2I16:
3610 bad_shared_reloc (abfd, r_type);
3613 if (htab->sdata[1].section == NULL
3614 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3617 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3622 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3623 h->non_got_ref = TRUE;
3627 case R_PPC_SDAREL16:
3630 bad_shared_reloc (abfd, r_type);
3633 if (htab->sdata[0].sym == NULL
3634 && !create_sdata_sym (htab, &htab->sdata[0]))
3638 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3639 h->non_got_ref = TRUE;
3643 case R_PPC_EMB_SDA2REL:
3646 bad_shared_reloc (abfd, r_type);
3649 if (htab->sdata[1].sym == NULL
3650 && !create_sdata_sym (htab, &htab->sdata[1]))
3654 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3655 h->non_got_ref = TRUE;
3659 case R_PPC_EMB_SDA21:
3660 case R_PPC_EMB_RELSDA:
3663 bad_shared_reloc (abfd, r_type);
3666 if (htab->sdata[0].sym == NULL
3667 && !create_sdata_sym (htab, &htab->sdata[0]))
3669 if (htab->sdata[1].sym == NULL
3670 && !create_sdata_sym (htab, &htab->sdata[1]))
3674 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3675 h->non_got_ref = TRUE;
3679 case R_PPC_EMB_NADDR32:
3680 case R_PPC_EMB_NADDR16:
3681 case R_PPC_EMB_NADDR16_LO:
3682 case R_PPC_EMB_NADDR16_HI:
3683 case R_PPC_EMB_NADDR16_HA:
3686 bad_shared_reloc (abfd, r_type);
3690 h->non_got_ref = TRUE;
3693 case R_PPC_PLTREL24:
3698 case R_PPC_PLTREL32:
3699 case R_PPC_PLT16_LO:
3700 case R_PPC_PLT16_HI:
3701 case R_PPC_PLT16_HA:
3703 fprintf (stderr, "Reloc requires a PLT entry\n");
3705 /* This symbol requires a procedure linkage table entry. We
3706 actually build the entry in finish_dynamic_symbol,
3707 because this might be a case of linking PIC code without
3708 linking in any dynamic objects, in which case we don't
3709 need to generate a procedure linkage table after all. */
3713 /* It does not make sense to have a procedure linkage
3714 table entry for a local symbol. */
3715 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3719 (long) rel->r_offset,
3720 ppc_elf_howto_table[r_type]->name);
3721 bfd_set_error (bfd_error_bad_value);
3728 if (r_type == R_PPC_PLTREL24)
3730 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3732 addend = rel->r_addend;
3735 if (!update_plt_info (abfd, &h->plt.plist,
3736 addend < 32768 ? NULL : got2, addend))
3741 /* The following relocations don't need to propagate the
3742 relocation if linking a shared object since they are
3743 section relative. */
3745 case R_PPC_SECTOFF_LO:
3746 case R_PPC_SECTOFF_HI:
3747 case R_PPC_SECTOFF_HA:
3748 case R_PPC_DTPREL16:
3749 case R_PPC_DTPREL16_LO:
3750 case R_PPC_DTPREL16_HI:
3751 case R_PPC_DTPREL16_HA:
3756 case R_PPC_REL16_LO:
3757 case R_PPC_REL16_HI:
3758 case R_PPC_REL16_HA:
3759 ppc_elf_tdata (abfd)->has_rel16 = 1;
3762 /* These are just markers. */
3764 case R_PPC_EMB_MRKREF:
3768 case R_PPC_RELAX32PC:
3769 case R_PPC_RELAX32_PLT:
3770 case R_PPC_RELAX32PC_PLT:
3773 /* These should only appear in dynamic objects. */
3775 case R_PPC_GLOB_DAT:
3776 case R_PPC_JMP_SLOT:
3777 case R_PPC_RELATIVE:
3778 case R_PPC_IRELATIVE:
3781 /* These aren't handled yet. We'll report an error later. */
3783 case R_PPC_EMB_RELSEC16:
3784 case R_PPC_EMB_RELST_LO:
3785 case R_PPC_EMB_RELST_HI:
3786 case R_PPC_EMB_RELST_HA:
3787 case R_PPC_EMB_BIT_FLD:
3790 /* This refers only to functions defined in the shared library. */
3791 case R_PPC_LOCAL24PC:
3792 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3794 htab->plt_type = PLT_OLD;
3795 htab->old_bfd = abfd;
3799 /* This relocation describes the C++ object vtable hierarchy.
3800 Reconstruct it for later use during GC. */
3801 case R_PPC_GNU_VTINHERIT:
3802 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3806 /* This relocation describes which C++ vtable entries are actually
3807 used. Record for later use during GC. */
3808 case R_PPC_GNU_VTENTRY:
3809 BFD_ASSERT (h != NULL);
3811 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3815 /* We shouldn't really be seeing these. */
3818 case R_PPC_TPREL16_LO:
3819 case R_PPC_TPREL16_HI:
3820 case R_PPC_TPREL16_HA:
3821 if (!info->executable)
3822 info->flags |= DF_STATIC_TLS;
3826 case R_PPC_DTPMOD32:
3827 case R_PPC_DTPREL32:
3833 && (sec->flags & SEC_CODE) != 0
3835 && htab->plt_type == PLT_UNSET)
3837 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3838 the start of a function, which assembles to a REL32
3839 reference to .got2. If we detect one of these, then
3840 force the old PLT layout because the linker cannot
3841 reliably deduce the GOT pointer value needed for
3844 Elf_Internal_Sym *isym;
3846 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3851 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3854 htab->plt_type = PLT_OLD;
3855 htab->old_bfd = abfd;
3858 if (h == NULL || h == htab->elf.hgot)
3864 case R_PPC_ADDR16_LO:
3865 case R_PPC_ADDR16_HI:
3866 case R_PPC_ADDR16_HA:
3869 if (h != NULL && !info->shared)
3871 /* We may need a plt entry if the symbol turns out to be
3872 a function defined in a dynamic object. */
3873 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3876 /* We may need a copy reloc too. */
3878 h->pointer_equality_needed = 1;
3884 case R_PPC_REL14_BRTAKEN:
3885 case R_PPC_REL14_BRNTAKEN:
3888 if (h == htab->elf.hgot)
3890 if (htab->plt_type == PLT_UNSET)
3892 htab->plt_type = PLT_OLD;
3893 htab->old_bfd = abfd;
3901 case R_PPC_ADDR14_BRTAKEN:
3902 case R_PPC_ADDR14_BRNTAKEN:
3903 if (h != NULL && !info->shared)
3905 /* We may need a plt entry if the symbol turns out to be
3906 a function defined in a dynamic object. */
3908 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3914 /* If we are creating a shared library, and this is a reloc
3915 against a global symbol, or a non PC relative reloc
3916 against a local symbol, then we need to copy the reloc
3917 into the shared library. However, if we are linking with
3918 -Bsymbolic, we do not need to copy a reloc against a
3919 global symbol which is defined in an object we are
3920 including in the link (i.e., DEF_REGULAR is set). At
3921 this point we have not seen all the input files, so it is
3922 possible that DEF_REGULAR is not set now but will be set
3923 later (it is never cleared). In case of a weak definition,
3924 DEF_REGULAR may be cleared later by a strong definition in
3925 a shared library. We account for that possibility below by
3926 storing information in the dyn_relocs field of the hash
3927 table entry. A similar situation occurs when creating
3928 shared libraries and symbol visibility changes render the
3931 If on the other hand, we are creating an executable, we
3932 may need to keep relocations for symbols satisfied by a
3933 dynamic library if we manage to avoid copy relocs for the
3936 && (must_be_dyn_reloc (info, r_type)
3938 && (! info->symbolic
3939 || h->root.type == bfd_link_hash_defweak
3940 || !h->def_regular))))
3941 || (ELIMINATE_COPY_RELOCS
3944 && (h->root.type == bfd_link_hash_defweak
3945 || !h->def_regular)))
3947 struct ppc_elf_dyn_relocs *p;
3948 struct ppc_elf_dyn_relocs **head;
3952 "ppc_elf_check_relocs needs to "
3953 "create relocation for %s\n",
3954 (h && h->root.root.string
3955 ? h->root.root.string : "<unknown>"));
3959 if (htab->elf.dynobj == NULL)
3960 htab->elf.dynobj = abfd;
3962 sreloc = _bfd_elf_make_dynamic_reloc_section
3963 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3969 /* If this is a global symbol, we count the number of
3970 relocations we need for this symbol. */
3973 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3977 /* Track dynamic relocs needed for local syms too.
3978 We really need local syms available to do this
3982 Elf_Internal_Sym *isym;
3984 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3989 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3993 vpp = &elf_section_data (s)->local_dynrel;
3994 head = (struct ppc_elf_dyn_relocs **) vpp;
3998 if (p == NULL || p->sec != sec)
4000 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4011 if (!must_be_dyn_reloc (info, r_type))
4023 /* Merge object attributes from IBFD into OBFD. Raise an error if
4024 there are conflicting attributes. */
4026 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4028 obj_attribute *in_attr, *in_attrs;
4029 obj_attribute *out_attr, *out_attrs;
4031 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4033 /* This is the first object. Copy the attributes. */
4034 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4036 /* Use the Tag_null value to indicate the attributes have been
4038 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4043 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4044 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4046 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4047 non-conflicting ones. */
4048 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4049 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4050 if (in_attr->i != out_attr->i)
4053 if (out_attr->i == 0)
4054 out_attr->i = in_attr->i;
4055 else if (in_attr->i == 0)
4057 else if (out_attr->i == 1 && in_attr->i == 2)
4059 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4060 else if (out_attr->i == 1 && in_attr->i == 3)
4062 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4064 else if (out_attr->i == 3 && in_attr->i == 1)
4066 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4068 else if (out_attr->i == 3 && in_attr->i == 2)
4070 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4072 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4074 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4075 else if (in_attr->i > 3)
4077 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4081 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4085 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4086 merge non-conflicting ones. */
4087 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4088 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4089 if (in_attr->i != out_attr->i)
4091 const char *in_abi = NULL, *out_abi = NULL;
4095 case 1: in_abi = "generic"; break;
4096 case 2: in_abi = "AltiVec"; break;
4097 case 3: in_abi = "SPE"; break;
4100 switch (out_attr->i)
4102 case 1: out_abi = "generic"; break;
4103 case 2: out_abi = "AltiVec"; break;
4104 case 3: out_abi = "SPE"; break;
4108 if (out_attr->i == 0)
4109 out_attr->i = in_attr->i;
4110 else if (in_attr->i == 0)
4112 /* For now, allow generic to transition to AltiVec or SPE
4113 without a warning. If GCC marked files with their stack
4114 alignment and used don't-care markings for files which are
4115 not affected by the vector ABI, we could warn about this
4117 else if (out_attr->i == 1)
4118 out_attr->i = in_attr->i;
4119 else if (in_attr->i == 1)
4121 else if (in_abi == NULL)
4123 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4125 else if (out_abi == NULL)
4127 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4131 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4132 ibfd, obfd, in_abi, out_abi);
4135 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4136 and merge non-conflicting ones. */
4137 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4138 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4139 if (in_attr->i != out_attr->i)
4142 if (out_attr->i == 0)
4143 out_attr->i = in_attr->i;
4144 else if (in_attr->i == 0)
4146 else if (out_attr->i == 1 && in_attr->i == 2)
4148 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4149 else if (out_attr->i == 2 && in_attr->i == 1)
4151 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4152 else if (in_attr->i > 2)
4154 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4158 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4162 /* Merge Tag_compatibility attributes and any common GNU ones. */
4163 _bfd_elf_merge_object_attributes (ibfd, obfd);
4168 /* Merge backend specific data from an object file to the output
4169 object file when linking. */
4172 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4178 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4181 /* Check if we have the same endianess. */
4182 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4185 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4188 new_flags = elf_elfheader (ibfd)->e_flags;
4189 old_flags = elf_elfheader (obfd)->e_flags;
4190 if (!elf_flags_init (obfd))
4192 /* First call, no flags set. */
4193 elf_flags_init (obfd) = TRUE;
4194 elf_elfheader (obfd)->e_flags = new_flags;
4197 /* Compatible flags are ok. */
4198 else if (new_flags == old_flags)
4201 /* Incompatible flags. */
4204 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4205 to be linked with either. */
4207 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4208 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4211 (*_bfd_error_handler)
4212 (_("%B: compiled with -mrelocatable and linked with "
4213 "modules compiled normally"), ibfd);
4215 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4216 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4219 (*_bfd_error_handler)
4220 (_("%B: compiled normally and linked with "
4221 "modules compiled with -mrelocatable"), ibfd);
4224 /* The output is -mrelocatable-lib iff both the input files are. */
4225 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4226 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4228 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4229 but each input file is either -mrelocatable or -mrelocatable-lib. */
4230 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4231 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4232 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4233 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4235 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4236 any module uses it. */
4237 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4239 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4240 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4242 /* Warn about any other mismatches. */
4243 if (new_flags != old_flags)
4246 (*_bfd_error_handler)
4247 (_("%B: uses different e_flags (0x%lx) fields "
4248 "than previous modules (0x%lx)"),
4249 ibfd, (long) new_flags, (long) old_flags);
4254 bfd_set_error (bfd_error_bad_value);
4262 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4263 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4265 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4266 struct bfd_link_info *info,
4267 enum ppc_elf_plt_type plt_style,
4270 struct ppc_elf_link_hash_table *htab;
4273 htab = ppc_elf_hash_table (info);
4275 if (htab->plt_type == PLT_UNSET)
4277 if (plt_style == PLT_OLD)
4278 htab->plt_type = PLT_OLD;
4282 enum ppc_elf_plt_type plt_type = plt_style;
4284 /* Look through the reloc flags left by ppc_elf_check_relocs.
4285 Use the old style bss plt if a file makes plt calls
4286 without using the new relocs, and if ld isn't given
4287 --secure-plt and we never see REL16 relocs. */
4288 if (plt_type == PLT_UNSET)
4290 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4291 if (is_ppc_elf (ibfd))
4293 if (ppc_elf_tdata (ibfd)->has_rel16)
4295 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4298 htab->old_bfd = ibfd;
4302 htab->plt_type = plt_type;
4305 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4306 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4308 htab->emit_stub_syms = emit_stub_syms;
4310 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4312 if (htab->plt_type == PLT_NEW)
4314 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4315 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4317 /* The new PLT is a loaded section. */
4318 if (htab->plt != NULL
4319 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4322 /* The new GOT is not executable. */
4323 if (htab->got != NULL
4324 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4329 /* Stop an unused .glink section from affecting .text alignment. */
4330 if (htab->glink != NULL
4331 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4334 return htab->plt_type == PLT_NEW;
4337 /* Return the section that should be marked against GC for a given
4341 ppc_elf_gc_mark_hook (asection *sec,
4342 struct bfd_link_info *info,
4343 Elf_Internal_Rela *rel,
4344 struct elf_link_hash_entry *h,
4345 Elf_Internal_Sym *sym)
4348 switch (ELF32_R_TYPE (rel->r_info))
4350 case R_PPC_GNU_VTINHERIT:
4351 case R_PPC_GNU_VTENTRY:
4355 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4358 /* Update the got, plt and dynamic reloc reference counts for the
4359 section being removed. */
4362 ppc_elf_gc_sweep_hook (bfd *abfd,
4363 struct bfd_link_info *info,
4365 const Elf_Internal_Rela *relocs)
4367 struct ppc_elf_link_hash_table *htab;
4368 Elf_Internal_Shdr *symtab_hdr;
4369 struct elf_link_hash_entry **sym_hashes;
4370 bfd_signed_vma *local_got_refcounts;
4371 const Elf_Internal_Rela *rel, *relend;
4374 if (info->relocatable)
4377 if ((sec->flags & SEC_ALLOC) == 0)
4380 elf_section_data (sec)->local_dynrel = NULL;
4382 htab = ppc_elf_hash_table (info);
4383 symtab_hdr = &elf_symtab_hdr (abfd);
4384 sym_hashes = elf_sym_hashes (abfd);
4385 local_got_refcounts = elf_local_got_refcounts (abfd);
4386 got2 = bfd_get_section_by_name (abfd, ".got2");
4388 relend = relocs + sec->reloc_count;
4389 for (rel = relocs; rel < relend; rel++)
4391 unsigned long r_symndx;
4392 enum elf_ppc_reloc_type r_type;
4393 struct elf_link_hash_entry *h = NULL;
4395 r_symndx = ELF32_R_SYM (rel->r_info);
4396 if (r_symndx >= symtab_hdr->sh_info)
4398 struct ppc_elf_dyn_relocs **pp, *p;
4399 struct ppc_elf_link_hash_entry *eh;
4401 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4402 while (h->root.type == bfd_link_hash_indirect
4403 || h->root.type == bfd_link_hash_warning)
4404 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4405 eh = (struct ppc_elf_link_hash_entry *) h;
4407 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4410 /* Everything must go for SEC. */
4416 r_type = ELF32_R_TYPE (rel->r_info);
4417 if (!htab->is_vxworks
4419 && local_got_refcounts != NULL
4421 || is_branch_reloc (r_type)))
4423 struct plt_entry **local_plt = (struct plt_entry **)
4424 (local_got_refcounts + symtab_hdr->sh_info);
4425 char *local_got_tls_masks = (char *)
4426 (local_plt + symtab_hdr->sh_info);
4427 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4429 struct plt_entry **ifunc = local_plt + r_symndx;
4431 struct plt_entry *ent;
4433 if (r_type == R_PPC_PLTREL24 && info->shared)
4434 addend = rel->r_addend;
4435 ent = find_plt_ent (ifunc, got2, addend);
4436 if (ent->plt.refcount > 0)
4437 ent->plt.refcount -= 1;
4444 case R_PPC_GOT_TLSLD16:
4445 case R_PPC_GOT_TLSLD16_LO:
4446 case R_PPC_GOT_TLSLD16_HI:
4447 case R_PPC_GOT_TLSLD16_HA:
4448 case R_PPC_GOT_TLSGD16:
4449 case R_PPC_GOT_TLSGD16_LO:
4450 case R_PPC_GOT_TLSGD16_HI:
4451 case R_PPC_GOT_TLSGD16_HA:
4452 case R_PPC_GOT_TPREL16:
4453 case R_PPC_GOT_TPREL16_LO:
4454 case R_PPC_GOT_TPREL16_HI:
4455 case R_PPC_GOT_TPREL16_HA:
4456 case R_PPC_GOT_DTPREL16:
4457 case R_PPC_GOT_DTPREL16_LO:
4458 case R_PPC_GOT_DTPREL16_HI:
4459 case R_PPC_GOT_DTPREL16_HA:
4461 case R_PPC_GOT16_LO:
4462 case R_PPC_GOT16_HI:
4463 case R_PPC_GOT16_HA:
4466 if (h->got.refcount > 0)
4469 else if (local_got_refcounts != NULL)
4471 if (local_got_refcounts[r_symndx] > 0)
4472 local_got_refcounts[r_symndx]--;
4478 case R_PPC_REL14_BRTAKEN:
4479 case R_PPC_REL14_BRNTAKEN:
4481 if (h == NULL || h == htab->elf.hgot)
4488 case R_PPC_ADDR16_LO:
4489 case R_PPC_ADDR16_HI:
4490 case R_PPC_ADDR16_HA:
4492 case R_PPC_ADDR14_BRTAKEN:
4493 case R_PPC_ADDR14_BRNTAKEN:
4500 case R_PPC_PLTREL24:
4501 case R_PPC_PLTREL32:
4502 case R_PPC_PLT16_LO:
4503 case R_PPC_PLT16_HI:
4504 case R_PPC_PLT16_HA:
4508 struct plt_entry *ent;
4510 if (r_type == R_PPC_PLTREL24 && info->shared)
4511 addend = rel->r_addend;
4512 ent = find_plt_ent (&h->plt.plist, got2, addend);
4513 if (ent->plt.refcount > 0)
4514 ent->plt.refcount -= 1;
4525 /* Set plt output section type, htab->tls_get_addr, and call the
4526 generic ELF tls_setup function. */
4529 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4531 struct ppc_elf_link_hash_table *htab;
4533 htab = ppc_elf_hash_table (info);
4534 if (htab->plt_type == PLT_NEW
4535 && htab->plt != NULL
4536 && htab->plt->output_section != NULL)
4538 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4539 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4542 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4543 FALSE, FALSE, TRUE);
4544 return _bfd_elf_tls_setup (obfd, info);
4547 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4551 branch_reloc_hash_match (const bfd *ibfd,
4552 const Elf_Internal_Rela *rel,
4553 const struct elf_link_hash_entry *hash)
4555 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4556 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4557 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4559 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4561 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4562 struct elf_link_hash_entry *h;
4564 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4565 while (h->root.type == bfd_link_hash_indirect
4566 || h->root.type == bfd_link_hash_warning)
4567 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4574 /* Run through all the TLS relocs looking for optimization
4578 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4579 struct bfd_link_info *info)
4583 struct ppc_elf_link_hash_table *htab;
4586 if (info->relocatable || !info->executable)
4589 htab = ppc_elf_hash_table (info);
4590 /* Make two passes through the relocs. First time check that tls
4591 relocs involved in setting up a tls_get_addr call are indeed
4592 followed by such a call. If they are not, exclude them from
4593 the optimizations done on the second pass. */
4594 for (pass = 0; pass < 2; ++pass)
4595 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4597 Elf_Internal_Sym *locsyms = NULL;
4598 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4600 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4601 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4603 Elf_Internal_Rela *relstart, *rel, *relend;
4605 /* Read the relocations. */
4606 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4608 if (relstart == NULL)
4611 relend = relstart + sec->reloc_count;
4612 for (rel = relstart; rel < relend; rel++)
4614 enum elf_ppc_reloc_type r_type;
4615 unsigned long r_symndx;
4616 struct elf_link_hash_entry *h = NULL;
4618 char tls_set, tls_clear;
4619 bfd_boolean is_local;
4620 int expecting_tls_get_addr;
4621 bfd_signed_vma *got_count;
4623 r_symndx = ELF32_R_SYM (rel->r_info);
4624 if (r_symndx >= symtab_hdr->sh_info)
4626 struct elf_link_hash_entry **sym_hashes;
4628 sym_hashes = elf_sym_hashes (ibfd);
4629 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4630 while (h->root.type == bfd_link_hash_indirect
4631 || h->root.type == bfd_link_hash_warning)
4632 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4635 expecting_tls_get_addr = 0;
4641 r_type = ELF32_R_TYPE (rel->r_info);
4644 case R_PPC_GOT_TLSLD16:
4645 case R_PPC_GOT_TLSLD16_LO:
4646 expecting_tls_get_addr = 1;
4649 case R_PPC_GOT_TLSLD16_HI:
4650 case R_PPC_GOT_TLSLD16_HA:
4651 /* These relocs should never be against a symbol
4652 defined in a shared lib. Leave them alone if
4653 that turns out to be the case. */
4662 case R_PPC_GOT_TLSGD16:
4663 case R_PPC_GOT_TLSGD16_LO:
4664 expecting_tls_get_addr = 1;
4667 case R_PPC_GOT_TLSGD16_HI:
4668 case R_PPC_GOT_TLSGD16_HA:
4674 tls_set = TLS_TLS | TLS_TPRELGD;
4678 case R_PPC_GOT_TPREL16:
4679 case R_PPC_GOT_TPREL16_LO:
4680 case R_PPC_GOT_TPREL16_HI:
4681 case R_PPC_GOT_TPREL16_HA:
4686 tls_clear = TLS_TPREL;
4698 if (!expecting_tls_get_addr
4699 || !sec->has_tls_get_addr_call)
4702 if (rel + 1 < relend
4703 && branch_reloc_hash_match (ibfd, rel + 1,
4704 htab->tls_get_addr))
4707 /* Uh oh, we didn't find the expected call. We
4708 could just mark this symbol to exclude it
4709 from tls optimization but it's safer to skip
4710 the entire section. */
4711 sec->has_tls_reloc = 0;
4717 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4718 got_count = &h->got.refcount;
4722 Elf_Internal_Sym *sym;
4723 bfd_signed_vma *lgot_refs;
4724 struct plt_entry **local_plt;
4727 if (locsyms == NULL)
4729 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4730 if (locsyms == NULL)
4731 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4732 symtab_hdr->sh_info,
4733 0, NULL, NULL, NULL);
4734 if (locsyms == NULL)
4736 if (elf_section_data (sec)->relocs != relstart)
4741 sym = locsyms + r_symndx;
4742 lgot_refs = elf_local_got_refcounts (ibfd);
4743 if (lgot_refs == NULL)
4745 local_plt = (struct plt_entry **)
4746 (lgot_refs + symtab_hdr->sh_info);
4747 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
4748 tls_mask = &lgot_masks[r_symndx];
4749 got_count = &lgot_refs[r_symndx];
4754 /* We managed to get rid of a got entry. */
4759 if (expecting_tls_get_addr)
4761 struct plt_entry *ent;
4763 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4765 if (ent != NULL && ent->plt.refcount > 0)
4766 ent->plt.refcount -= 1;
4769 *tls_mask |= tls_set;
4770 *tls_mask &= ~tls_clear;
4773 if (elf_section_data (sec)->relocs != relstart)
4778 && (symtab_hdr->contents != (unsigned char *) locsyms))
4780 if (!info->keep_memory)
4783 symtab_hdr->contents = (unsigned char *) locsyms;
4789 /* Return true if we have dynamic relocs that apply to read-only sections. */
4792 readonly_dynrelocs (struct elf_link_hash_entry *h)
4794 struct ppc_elf_dyn_relocs *p;
4796 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4798 asection *s = p->sec->output_section;
4801 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4802 == (SEC_READONLY | SEC_ALLOC)))
4808 /* Adjust a symbol defined by a dynamic object and referenced by a
4809 regular object. The current definition is in some section of the
4810 dynamic object, but we're not including those sections. We have to
4811 change the definition to something the rest of the link can
4815 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4816 struct elf_link_hash_entry *h)
4818 struct ppc_elf_link_hash_table *htab;
4822 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4823 h->root.root.string);
4826 /* Make sure we know what is going on here. */
4827 htab = ppc_elf_hash_table (info);
4828 BFD_ASSERT (htab->elf.dynobj != NULL
4830 || h->u.weakdef != NULL
4833 && !h->def_regular)));
4835 /* Deal with function syms. */
4836 if (h->type == STT_FUNC
4837 || h->type == STT_GNU_IFUNC
4840 /* Clear procedure linkage table information for any symbol that
4841 won't need a .plt entry. */
4842 struct plt_entry *ent;
4843 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4844 if (ent->plt.refcount > 0)
4847 || (h->type != STT_GNU_IFUNC
4848 && (SYMBOL_CALLS_LOCAL (info, h)
4849 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4850 && h->root.type == bfd_link_hash_undefweak))))
4852 /* A PLT entry is not required/allowed when:
4854 1. We are not using ld.so; because then the PLT entry
4855 can't be set up, so we can't use one. In this case,
4856 ppc_elf_adjust_dynamic_symbol won't even be called.
4858 2. GC has rendered the entry unused.
4860 3. We know for certain that a call to this symbol
4861 will go to this object, or will remain undefined. */
4862 h->plt.plist = NULL;
4867 /* After adjust_dynamic_symbol, non_got_ref set in the
4868 non-shared case means that we have allocated space in
4869 .dynbss for the symbol and thus dyn_relocs for this
4870 symbol should be discarded.
4871 If we get here we know we are making a PLT entry for this
4872 symbol, and in an executable we'd normally resolve
4873 relocations against this symbol to the PLT entry. Allow
4874 dynamic relocs if the reference is weak, and the dynamic
4875 relocs will not cause text relocation. */
4876 if (!h->ref_regular_nonweak
4878 && h->type != STT_GNU_IFUNC
4879 && !htab->is_vxworks
4880 && !ppc_elf_hash_entry (h)->has_sda_refs
4881 && !readonly_dynrelocs (h))
4887 h->plt.plist = NULL;
4889 /* If this is a weak symbol, and there is a real definition, the
4890 processor independent code will have arranged for us to see the
4891 real definition first, and we can just use the same value. */
4892 if (h->u.weakdef != NULL)
4894 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4895 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4896 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4897 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4898 if (ELIMINATE_COPY_RELOCS)
4899 h->non_got_ref = h->u.weakdef->non_got_ref;
4903 /* This is a reference to a symbol defined by a dynamic object which
4904 is not a function. */
4906 /* If we are creating a shared library, we must presume that the
4907 only references to the symbol are via the global offset table.
4908 For such cases we need not do anything here; the relocations will
4909 be handled correctly by relocate_section. */
4913 /* If there are no references to this symbol that do not use the
4914 GOT, we don't need to generate a copy reloc. */
4915 if (!h->non_got_ref)
4918 /* If we didn't find any dynamic relocs in read-only sections, then
4919 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4920 We can't do this if there are any small data relocations. This
4921 doesn't work on VxWorks, where we can not have dynamic
4922 relocations (other than copy and jump slot relocations) in an
4924 if (ELIMINATE_COPY_RELOCS
4925 && !ppc_elf_hash_entry (h)->has_sda_refs
4926 && !htab->is_vxworks
4928 && !readonly_dynrelocs (h))
4936 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4937 h->root.root.string);
4941 /* We must allocate the symbol in our .dynbss section, which will
4942 become part of the .bss section of the executable. There will be
4943 an entry for this symbol in the .dynsym section. The dynamic
4944 object will contain position independent code, so all references
4945 from the dynamic object to this symbol will go through the global
4946 offset table. The dynamic linker will use the .dynsym entry to
4947 determine the address it must put in the global offset table, so
4948 both the dynamic object and the regular object will refer to the
4949 same memory location for the variable.
4951 Of course, if the symbol is referenced using SDAREL relocs, we
4952 must instead allocate it in .sbss. */
4954 if (ppc_elf_hash_entry (h)->has_sda_refs)
4958 BFD_ASSERT (s != NULL);
4960 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4961 copy the initial value out of the dynamic object and into the
4962 runtime process image. We need to remember the offset into the
4963 .rela.bss section we are going to use. */
4964 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4968 if (ppc_elf_hash_entry (h)->has_sda_refs)
4969 srel = htab->relsbss;
4971 srel = htab->relbss;
4972 BFD_ASSERT (srel != NULL);
4973 srel->size += sizeof (Elf32_External_Rela);
4977 return _bfd_elf_adjust_dynamic_copy (h, s);
4980 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4981 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4982 specifying the addend on the plt relocation. For -fpic code, the sym
4983 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4984 xxxxxxxx.got2.plt_pic32.<callee>. */
4987 add_stub_sym (struct plt_entry *ent,
4988 struct elf_link_hash_entry *h,
4989 struct bfd_link_info *info)
4991 struct elf_link_hash_entry *sh;
4992 size_t len1, len2, len3;
4995 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4998 stub = ".plt_pic32.";
5000 stub = ".plt_call32.";
5002 len1 = strlen (h->root.root.string);
5003 len2 = strlen (stub);
5006 len3 = strlen (ent->sec->name);
5007 name = bfd_malloc (len1 + len2 + len3 + 9);
5010 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5012 memcpy (name + 8, ent->sec->name, len3);
5013 memcpy (name + 8 + len3, stub, len2);
5014 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5015 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5018 if (sh->root.type == bfd_link_hash_new)
5020 sh->root.type = bfd_link_hash_defined;
5021 sh->root.u.def.section = htab->glink;
5022 sh->root.u.def.value = ent->glink_offset;
5023 sh->ref_regular = 1;
5024 sh->def_regular = 1;
5025 sh->ref_regular_nonweak = 1;
5026 sh->forced_local = 1;
5032 /* Allocate NEED contiguous space in .got, and return the offset.
5033 Handles allocation of the got header when crossing 32k. */
5036 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5039 unsigned int max_before_header;
5041 if (htab->plt_type == PLT_VXWORKS)
5043 where = htab->got->size;
5044 htab->got->size += need;
5048 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5049 if (need <= htab->got_gap)
5051 where = max_before_header - htab->got_gap;
5052 htab->got_gap -= need;
5056 if (htab->got->size + need > max_before_header
5057 && htab->got->size <= max_before_header)
5059 htab->got_gap = max_before_header - htab->got->size;
5060 htab->got->size = max_before_header + htab->got_header_size;
5062 where = htab->got->size;
5063 htab->got->size += need;
5069 /* Allocate space in associated reloc sections for dynamic relocs. */
5072 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5074 struct bfd_link_info *info = inf;
5075 struct ppc_elf_link_hash_entry *eh;
5076 struct ppc_elf_link_hash_table *htab;
5077 struct ppc_elf_dyn_relocs *p;
5079 if (h->root.type == bfd_link_hash_indirect)
5082 if (h->root.type == bfd_link_hash_warning)
5083 /* When warning symbols are created, they **replace** the "real"
5084 entry in the hash table, thus we never get to see the real
5085 symbol in a hash traversal. So look at it now. */
5086 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5088 htab = ppc_elf_hash_table (info);
5089 if (htab->elf.dynamic_sections_created
5090 || h->type == STT_GNU_IFUNC)
5092 struct plt_entry *ent;
5093 bfd_boolean doneone = FALSE;
5094 bfd_vma plt_offset = 0, glink_offset = 0;
5097 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5098 if (ent->plt.refcount > 0)
5100 /* Make sure this symbol is output as a dynamic symbol. */
5101 if (h->dynindx == -1
5104 && htab->elf.dynamic_sections_created)
5106 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5110 dyn = htab->elf.dynamic_sections_created;
5112 || h->type == STT_GNU_IFUNC
5113 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5115 asection *s = htab->plt;
5116 if (!dyn || h->dynindx == -1)
5119 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5123 plt_offset = s->size;
5126 ent->plt.offset = plt_offset;
5129 if (!doneone || info->shared)
5131 glink_offset = s->size;
5132 s->size += GLINK_ENTRY_SIZE;
5139 h->root.u.def.section = s;
5140 h->root.u.def.value = glink_offset;
5142 ent->glink_offset = glink_offset;
5144 if (htab->emit_stub_syms
5145 && !add_stub_sym (ent, h, info))
5152 /* If this is the first .plt entry, make room
5153 for the special first entry. */
5155 s->size += htab->plt_initial_entry_size;
5157 /* The PowerPC PLT is actually composed of two
5158 parts, the first part is 2 words (for a load
5159 and a jump), and then there is a remaining
5160 word available at the end. */
5161 plt_offset = (htab->plt_initial_entry_size
5162 + (htab->plt_slot_size
5164 - htab->plt_initial_entry_size)
5165 / htab->plt_entry_size)));
5167 /* If this symbol is not defined in a regular
5168 file, and we are not generating a shared
5169 library, then set the symbol to this location
5170 in the .plt. This is to avoid text
5171 relocations, and is required to make
5172 function pointers compare as equal between
5173 the normal executable and the shared library. */
5178 h->root.u.def.section = s;
5179 h->root.u.def.value = plt_offset;
5182 /* Make room for this entry. */
5183 s->size += htab->plt_entry_size;
5184 /* After the 8192nd entry, room for two entries
5186 if (htab->plt_type == PLT_OLD
5187 && (s->size - htab->plt_initial_entry_size)
5188 / htab->plt_entry_size
5189 > PLT_NUM_SINGLE_ENTRIES)
5190 s->size += htab->plt_entry_size;
5192 ent->plt.offset = plt_offset;
5195 /* We also need to make an entry in the .rela.plt section. */
5198 if (!htab->elf.dynamic_sections_created
5199 || h->dynindx == -1)
5200 htab->reliplt->size += sizeof (Elf32_External_Rela);
5203 htab->relplt->size += sizeof (Elf32_External_Rela);
5205 if (htab->plt_type == PLT_VXWORKS)
5207 /* Allocate space for the unloaded relocations. */
5209 && htab->elf.dynamic_sections_created)
5212 == (bfd_vma) htab->plt_initial_entry_size)
5214 htab->srelplt2->size
5215 += (sizeof (Elf32_External_Rela)
5216 * VXWORKS_PLTRESOLVE_RELOCS);
5219 htab->srelplt2->size
5220 += (sizeof (Elf32_External_Rela)
5221 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5224 /* Every PLT entry has an associated GOT entry in
5226 htab->sgotplt->size += 4;
5233 ent->plt.offset = (bfd_vma) -1;
5236 ent->plt.offset = (bfd_vma) -1;
5240 h->plt.plist = NULL;
5246 h->plt.plist = NULL;
5250 eh = (struct ppc_elf_link_hash_entry *) h;
5251 if (eh->elf.got.refcount > 0)
5256 /* Make sure this symbol is output as a dynamic symbol. */
5257 if (eh->elf.dynindx == -1
5258 && !eh->elf.forced_local
5259 && eh->elf.type != STT_GNU_IFUNC
5260 && htab->elf.dynamic_sections_created)
5262 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5267 if ((eh->tls_mask & TLS_TLS) != 0)
5269 if ((eh->tls_mask & TLS_LD) != 0)
5271 if (!eh->elf.def_dynamic)
5272 /* We'll just use htab->tlsld_got.offset. This should
5273 always be the case. It's a little odd if we have
5274 a local dynamic reloc against a non-local symbol. */
5275 htab->tlsld_got.refcount += 1;
5279 if ((eh->tls_mask & TLS_GD) != 0)
5281 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5283 if ((eh->tls_mask & TLS_DTPREL) != 0)
5289 eh->elf.got.offset = (bfd_vma) -1;
5292 asection *rsec = NULL;
5293 eh->elf.got.offset = allocate_got (htab, need);
5294 dyn = htab->elf.dynamic_sections_created;
5296 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5297 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5298 || eh->elf.root.type != bfd_link_hash_undefweak))
5299 rsec = htab->relgot;
5300 else if (h->type == STT_GNU_IFUNC)
5301 rsec = htab->reliplt;
5304 /* All the entries we allocated need relocs.
5305 Except LD only needs one. */
5306 if ((eh->tls_mask & TLS_LD) != 0
5307 && eh->elf.def_dynamic)
5309 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5314 eh->elf.got.offset = (bfd_vma) -1;
5316 if (eh->dyn_relocs == NULL
5317 || !htab->elf.dynamic_sections_created)
5320 /* In the shared -Bsymbolic case, discard space allocated for
5321 dynamic pc-relative relocs against symbols which turn out to be
5322 defined in regular objects. For the normal shared case, discard
5323 space for relocs that have become local due to symbol visibility
5328 /* Relocs that use pc_count are those that appear on a call insn,
5329 or certain REL relocs (see must_be_dyn_reloc) that can be
5330 generated via assembly. We want calls to protected symbols to
5331 resolve directly to the function rather than going via the plt.
5332 If people want function pointer comparisons to work as expected
5333 then they should avoid writing weird assembly. */
5334 if (SYMBOL_CALLS_LOCAL (info, h))
5336 struct ppc_elf_dyn_relocs **pp;
5338 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5340 p->count -= p->pc_count;
5349 if (htab->is_vxworks)
5351 struct ppc_elf_dyn_relocs **pp;
5353 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5355 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5362 /* Discard relocs on undefined symbols that must be local. */
5363 if (eh->dyn_relocs != NULL
5364 && h->root.type == bfd_link_hash_undefined
5365 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5366 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5367 eh->dyn_relocs = NULL;
5369 /* Also discard relocs on undefined weak syms with non-default
5371 if (eh->dyn_relocs != NULL
5372 && h->root.type == bfd_link_hash_undefweak)
5374 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5375 eh->dyn_relocs = NULL;
5377 /* Make sure undefined weak symbols are output as a dynamic
5379 else if (h->dynindx == -1
5383 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5388 else if (ELIMINATE_COPY_RELOCS)
5390 /* For the non-shared case, discard space for relocs against
5391 symbols which turn out to need copy relocs or are not
5397 /* Make sure this symbol is output as a dynamic symbol.
5398 Undefined weak syms won't yet be marked as dynamic. */
5399 if (h->dynindx == -1
5400 && !h->forced_local)
5402 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5406 /* If that succeeded, we know we'll be keeping all the
5408 if (h->dynindx != -1)
5412 eh->dyn_relocs = NULL;
5417 /* Finally, allocate space. */
5418 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5420 asection *sreloc = elf_section_data (p->sec)->sreloc;
5421 if (!htab->elf.dynamic_sections_created)
5422 sreloc = htab->reliplt;
5423 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5429 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5430 read-only sections. */
5433 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5435 if (h->root.type == bfd_link_hash_indirect)
5438 if (h->root.type == bfd_link_hash_warning)
5439 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5441 if (readonly_dynrelocs (h))
5443 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5445 /* Not an error, just cut short the traversal. */
5451 /* Set the sizes of the dynamic sections. */
5454 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5455 struct bfd_link_info *info)
5457 struct ppc_elf_link_hash_table *htab;
5463 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5466 htab = ppc_elf_hash_table (info);
5467 BFD_ASSERT (htab->elf.dynobj != NULL);
5469 if (elf_hash_table (info)->dynamic_sections_created)
5471 /* Set the contents of the .interp section to the interpreter. */
5472 if (info->executable)
5474 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5475 BFD_ASSERT (s != NULL);
5476 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5477 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5481 if (htab->plt_type == PLT_OLD)
5482 htab->got_header_size = 16;
5483 else if (htab->plt_type == PLT_NEW)
5484 htab->got_header_size = 12;
5486 /* Set up .got offsets for local syms, and space for local dynamic
5488 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5490 bfd_signed_vma *local_got;
5491 bfd_signed_vma *end_local_got;
5492 struct plt_entry **local_plt;
5493 struct plt_entry **end_local_plt;
5495 bfd_size_type locsymcount;
5496 Elf_Internal_Shdr *symtab_hdr;
5498 if (!is_ppc_elf (ibfd))
5501 for (s = ibfd->sections; s != NULL; s = s->next)
5503 struct ppc_elf_dyn_relocs *p;
5505 for (p = ((struct ppc_elf_dyn_relocs *)
5506 elf_section_data (s)->local_dynrel);
5510 if (!bfd_is_abs_section (p->sec)
5511 && bfd_is_abs_section (p->sec->output_section))
5513 /* Input section has been discarded, either because
5514 it is a copy of a linkonce section or due to
5515 linker script /DISCARD/, so we'll be discarding
5518 else if (htab->is_vxworks
5519 && strcmp (p->sec->output_section->name,
5522 /* Relocations in vxworks .tls_vars sections are
5523 handled specially by the loader. */
5525 else if (p->count != 0)
5527 asection *sreloc = elf_section_data (p->sec)->sreloc;
5528 if (!htab->elf.dynamic_sections_created)
5529 sreloc = htab->reliplt;
5530 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5531 if ((p->sec->output_section->flags
5532 & (SEC_READONLY | SEC_ALLOC))
5533 == (SEC_READONLY | SEC_ALLOC))
5534 info->flags |= DF_TEXTREL;
5539 local_got = elf_local_got_refcounts (ibfd);
5543 symtab_hdr = &elf_symtab_hdr (ibfd);
5544 locsymcount = symtab_hdr->sh_info;
5545 end_local_got = local_got + locsymcount;
5546 local_plt = (struct plt_entry **) end_local_got;
5547 end_local_plt = local_plt + locsymcount;
5548 lgot_masks = (char *) end_local_plt;
5549 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5552 unsigned int need = 0;
5553 if ((*lgot_masks & TLS_TLS) != 0)
5555 if ((*lgot_masks & TLS_GD) != 0)
5557 if ((*lgot_masks & TLS_LD) != 0)
5558 htab->tlsld_got.refcount += 1;
5559 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5561 if ((*lgot_masks & TLS_DTPREL) != 0)
5567 *local_got = (bfd_vma) -1;
5570 *local_got = allocate_got (htab, need);
5572 htab->relgot->size += (need
5573 * (sizeof (Elf32_External_Rela) / 4));
5574 else if ((*lgot_masks & PLT_IFUNC) != 0)
5575 htab->reliplt->size += (need
5576 * (sizeof (Elf32_External_Rela) / 4));
5580 *local_got = (bfd_vma) -1;
5582 if (htab->is_vxworks)
5585 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5586 for (; local_plt < end_local_plt; ++local_plt)
5588 struct plt_entry *ent;
5589 bfd_boolean doneone = FALSE;
5590 bfd_vma plt_offset = 0, glink_offset = 0;
5592 for (ent = *local_plt; ent != NULL; ent = ent->next)
5593 if (ent->plt.refcount > 0)
5595 asection *s = htab->iplt;
5599 plt_offset = s->size;
5602 ent->plt.offset = plt_offset;
5605 if (!doneone || info->shared)
5607 glink_offset = s->size;
5608 s->size += GLINK_ENTRY_SIZE;
5610 ent->glink_offset = glink_offset;
5614 htab->reliplt->size += sizeof (Elf32_External_Rela);
5619 ent->plt.offset = (bfd_vma) -1;
5623 /* Allocate space for global sym dynamic relocs. */
5624 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5626 if (htab->tlsld_got.refcount > 0)
5628 htab->tlsld_got.offset = allocate_got (htab, 8);
5630 htab->relgot->size += sizeof (Elf32_External_Rela);
5633 htab->tlsld_got.offset = (bfd_vma) -1;
5635 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5637 unsigned int g_o_t = 32768;
5639 /* If we haven't allocated the header, do so now. When we get here,
5640 for old plt/got the got size will be 0 to 32764 (not allocated),
5641 or 32780 to 65536 (header allocated). For new plt/got, the
5642 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5643 if (htab->got->size <= 32768)
5645 g_o_t = htab->got->size;
5646 if (htab->plt_type == PLT_OLD)
5648 htab->got->size += htab->got_header_size;
5651 htab->elf.hgot->root.u.def.value = g_o_t;
5654 if (htab->glink != NULL
5655 && htab->glink->size != 0
5656 && htab->elf.dynamic_sections_created)
5658 htab->glink_pltresolve = htab->glink->size;
5659 /* Space for the branch table. */
5660 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5661 /* Pad out to align the start of PLTresolve. */
5662 htab->glink->size += -htab->glink->size & 15;
5663 htab->glink->size += GLINK_PLTRESOLVE;
5665 if (htab->emit_stub_syms)
5667 struct elf_link_hash_entry *sh;
5668 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5669 TRUE, FALSE, FALSE);
5672 if (sh->root.type == bfd_link_hash_new)
5674 sh->root.type = bfd_link_hash_defined;
5675 sh->root.u.def.section = htab->glink;
5676 sh->root.u.def.value = htab->glink_pltresolve;
5677 sh->ref_regular = 1;
5678 sh->def_regular = 1;
5679 sh->ref_regular_nonweak = 1;
5680 sh->forced_local = 1;
5683 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5684 TRUE, FALSE, FALSE);
5687 if (sh->root.type == bfd_link_hash_new)
5689 sh->root.type = bfd_link_hash_defined;
5690 sh->root.u.def.section = htab->glink;
5691 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5692 sh->ref_regular = 1;
5693 sh->def_regular = 1;
5694 sh->ref_regular_nonweak = 1;
5695 sh->forced_local = 1;
5701 /* We've now determined the sizes of the various dynamic sections.
5702 Allocate memory for them. */
5704 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5706 bfd_boolean strip_section = TRUE;
5708 if ((s->flags & SEC_LINKER_CREATED) == 0)
5714 /* We'd like to strip these sections if they aren't needed, but if
5715 we've exported dynamic symbols from them we must leave them.
5716 It's too late to tell BFD to get rid of the symbols. */
5717 if (htab->elf.hplt != NULL)
5718 strip_section = FALSE;
5719 /* Strip this section if we don't need it; see the
5722 else if (s == htab->iplt
5724 || s == htab->sgotplt
5726 || s == htab->dynbss
5727 || s == htab->dynsbss
5728 || s == htab->sdata[0].section
5729 || s == htab->sdata[1].section)
5731 /* Strip these too. */
5733 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5737 /* Remember whether there are any relocation sections. */
5740 /* We use the reloc_count field as a counter if we need
5741 to copy relocs into the output file. */
5747 /* It's not one of our sections, so don't allocate space. */
5751 if (s->size == 0 && strip_section)
5753 /* If we don't need this section, strip it from the
5754 output file. This is mostly to handle .rela.bss and
5755 .rela.plt. We must create both sections in
5756 create_dynamic_sections, because they must be created
5757 before the linker maps input sections to output
5758 sections. The linker does that before
5759 adjust_dynamic_symbol is called, and it is that
5760 function which decides whether anything needs to go
5761 into these sections. */
5762 s->flags |= SEC_EXCLUDE;
5766 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5769 /* Allocate memory for the section contents. */
5770 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5771 if (s->contents == NULL)
5775 if (htab->elf.dynamic_sections_created)
5777 /* Add some entries to the .dynamic section. We fill in the
5778 values later, in ppc_elf_finish_dynamic_sections, but we
5779 must add the entries now so that we get the correct size for
5780 the .dynamic section. The DT_DEBUG entry is filled in by the
5781 dynamic linker and used by the debugger. */
5782 #define add_dynamic_entry(TAG, VAL) \
5783 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5785 if (info->executable)
5787 if (!add_dynamic_entry (DT_DEBUG, 0))
5791 if (htab->plt != NULL && htab->plt->size != 0)
5793 if (!add_dynamic_entry (DT_PLTGOT, 0)
5794 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5795 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5796 || !add_dynamic_entry (DT_JMPREL, 0))
5800 if (htab->glink != NULL && htab->glink->size != 0)
5802 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5808 if (!add_dynamic_entry (DT_RELA, 0)
5809 || !add_dynamic_entry (DT_RELASZ, 0)
5810 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5814 /* If any dynamic relocs apply to a read-only section, then we
5815 need a DT_TEXTREL entry. */
5816 if ((info->flags & DF_TEXTREL) == 0)
5817 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5820 if ((info->flags & DF_TEXTREL) != 0)
5822 if (!add_dynamic_entry (DT_TEXTREL, 0))
5825 if (htab->is_vxworks
5826 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5829 #undef add_dynamic_entry
5834 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5837 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5839 if (h->plt.plist != NULL
5841 && (!h->pointer_equality_needed
5842 || !h->ref_regular_nonweak))
5845 return _bfd_elf_hash_symbol (h);
5848 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5850 static const int shared_stub_entry[] =
5852 0x7c0802a6, /* mflr 0 */
5853 0x429f0005, /* bcl 20, 31, .Lxxx */
5854 0x7d6802a6, /* mflr 11 */
5855 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5856 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5857 0x7c0803a6, /* mtlr 0 */
5858 0x7d6903a6, /* mtctr 11 */
5859 0x4e800420, /* bctr */
5862 static const int stub_entry[] =
5864 0x3d600000, /* lis 11,xxx@ha */
5865 0x396b0000, /* addi 11,11,xxx@l */
5866 0x7d6903a6, /* mtctr 11 */
5867 0x4e800420, /* bctr */
5871 ppc_elf_relax_section (bfd *abfd,
5873 struct bfd_link_info *link_info,
5878 struct one_fixup *next;
5884 Elf_Internal_Shdr *symtab_hdr;
5885 bfd_byte *contents = NULL;
5886 Elf_Internal_Sym *isymbuf = NULL;
5887 Elf_Internal_Rela *internal_relocs = NULL;
5888 Elf_Internal_Rela *irel, *irelend;
5889 struct one_fixup *fixups = NULL;
5890 unsigned changes = 0;
5891 struct ppc_elf_link_hash_table *htab;
5892 bfd_size_type trampoff;
5897 /* Nothing to do if there are no relocations, and no need to do
5898 anything with non-alloc sections. */
5899 if ((isec->flags & SEC_ALLOC) == 0
5900 || (isec->flags & SEC_RELOC) == 0
5901 || isec->reloc_count == 0)
5904 /* We cannot represent the required PIC relocs in the output, so don't
5905 do anything. The linker doesn't support mixing -shared and -r
5907 if (link_info->relocatable && link_info->shared)
5910 trampoff = (isec->size + 3) & (bfd_vma) -4;
5911 /* Space for a branch around any trampolines. */
5914 symtab_hdr = &elf_symtab_hdr (abfd);
5916 /* Get a copy of the native relocations. */
5917 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5918 link_info->keep_memory);
5919 if (internal_relocs == NULL)
5922 htab = ppc_elf_hash_table (link_info);
5923 got2 = bfd_get_section_by_name (abfd, ".got2");
5925 irelend = internal_relocs + isec->reloc_count;
5926 for (irel = internal_relocs; irel < irelend; irel++)
5928 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5929 bfd_vma symaddr, reladdr, toff, roff;
5931 struct one_fixup *f;
5932 size_t insn_offset = 0;
5933 bfd_vma max_branch_offset, val;
5936 struct elf_link_hash_entry *h;
5937 unsigned char sym_type;
5942 case R_PPC_LOCAL24PC:
5943 case R_PPC_PLTREL24:
5944 max_branch_offset = 1 << 25;
5948 case R_PPC_REL14_BRTAKEN:
5949 case R_PPC_REL14_BRNTAKEN:
5950 max_branch_offset = 1 << 15;
5957 /* Get the value of the symbol referred to by the reloc. */
5959 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5961 /* A local symbol. */
5962 Elf_Internal_Sym *isym;
5964 /* Read this BFD's local symbols. */
5965 if (isymbuf == NULL)
5967 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5968 if (isymbuf == NULL)
5969 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5970 symtab_hdr->sh_info, 0,
5975 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5976 if (isym->st_shndx == SHN_UNDEF)
5977 tsec = bfd_und_section_ptr;
5978 else if (isym->st_shndx == SHN_ABS)
5979 tsec = bfd_abs_section_ptr;
5980 else if (isym->st_shndx == SHN_COMMON)
5981 tsec = bfd_com_section_ptr;
5983 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5985 toff = isym->st_value;
5986 sym_type = ELF_ST_TYPE (isym->st_info);
5990 /* Global symbol handling. */
5993 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5994 h = elf_sym_hashes (abfd)[indx];
5996 while (h->root.type == bfd_link_hash_indirect
5997 || h->root.type == bfd_link_hash_warning)
5998 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6004 else if (h->root.type == bfd_link_hash_defined
6005 || h->root.type == bfd_link_hash_defweak)
6007 tsec = h->root.u.def.section;
6008 toff = h->root.u.def.value;
6010 else if (h->root.type == bfd_link_hash_undefined
6011 || h->root.type == bfd_link_hash_undefweak)
6013 tsec = bfd_und_section_ptr;
6022 if (is_branch_reloc (r_type))
6024 struct plt_entry **plist = NULL;
6027 plist = &h->plt.plist;
6028 else if (sym_type == STT_GNU_IFUNC)
6030 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6031 struct plt_entry **local_plt = (struct plt_entry **)
6032 (local_got_offsets + symtab_hdr->sh_info);
6033 plist = local_plt + ELF32_R_SYM (irel->r_info);
6038 struct plt_entry *ent;
6040 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6041 addend = irel->r_addend;
6042 ent = find_plt_ent (plist, got2, addend);
6045 if (htab->plt_type == PLT_NEW
6047 || !htab->elf.dynamic_sections_created
6048 || h->dynindx == -1)
6051 toff = ent->glink_offset;
6056 toff = ent->plt.offset;
6062 /* If the branch and target are in the same section, you have
6063 no hope of adding stubs. We'll error out later should the
6068 /* There probably isn't any reason to handle symbols in
6069 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6070 attribute for a code section, and we are only looking at
6071 branches. However, implement it correctly here as a
6072 reference for other target relax_section functions. */
6073 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6075 /* At this stage in linking, no SEC_MERGE symbol has been
6076 adjusted, so all references to such symbols need to be
6077 passed through _bfd_merged_section_offset. (Later, in
6078 relocate_section, all SEC_MERGE symbols *except* for
6079 section symbols have been adjusted.)
6081 gas may reduce relocations against symbols in SEC_MERGE
6082 sections to a relocation against the section symbol when
6083 the original addend was zero. When the reloc is against
6084 a section symbol we should include the addend in the
6085 offset passed to _bfd_merged_section_offset, since the
6086 location of interest is the original symbol. On the
6087 other hand, an access to "sym+addend" where "sym" is not
6088 a section symbol should not include the addend; Such an
6089 access is presumed to be an offset from "sym"; The
6090 location of interest is just "sym". */
6091 if (sym_type == STT_SECTION)
6092 toff += irel->r_addend;
6094 toff = _bfd_merged_section_offset (abfd, &tsec,
6095 elf_section_data (tsec)->sec_info,
6098 if (sym_type != STT_SECTION)
6099 toff += irel->r_addend;
6101 /* PLTREL24 addends are special. */
6102 else if (r_type != R_PPC_PLTREL24)
6103 toff += irel->r_addend;
6105 /* Attempted -shared link of non-pic code loses. */
6106 if (tsec->output_section == NULL)
6109 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6111 roff = irel->r_offset;
6112 reladdr = isec->output_section->vma + isec->output_offset + roff;
6114 /* If the branch is in range, no need to do anything. */
6115 if (tsec != bfd_und_section_ptr
6116 && (!link_info->relocatable
6117 /* A relocatable link may have sections moved during
6118 final link, so do not presume they remain in range. */
6119 || tsec->output_section == isec->output_section)
6120 && symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6123 /* Look for an existing fixup to this address. */
6124 for (f = fixups; f ; f = f->next)
6125 if (f->tsec == tsec && f->toff == toff)
6131 unsigned long stub_rtype;
6133 val = trampoff - roff;
6134 if (val >= max_branch_offset)
6135 /* Oh dear, we can't reach a trampoline. Don't try to add
6136 one. We'll report an error later. */
6139 if (link_info->shared)
6141 size = 4 * ARRAY_SIZE (shared_stub_entry);
6143 stub_rtype = R_PPC_RELAX32PC;
6147 size = 4 * ARRAY_SIZE (stub_entry);
6149 stub_rtype = R_PPC_RELAX32;
6152 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
6153 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
6155 if (tsec == htab->plt
6156 || tsec == htab->glink)
6157 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
6159 /* Hijack the old relocation. Since we need two
6160 relocations for this use a "composite" reloc. */
6161 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6163 irel->r_offset = trampoff + insn_offset;
6164 if (r_type == R_PPC_PLTREL24)
6167 /* Record the fixup so we don't do it again this section. */
6168 f = bfd_malloc (sizeof (*f));
6172 f->trampoff = trampoff;
6180 val = f->trampoff - roff;
6181 if (val >= max_branch_offset)
6184 /* Nop out the reloc, since we're finalizing things here. */
6185 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6188 /* Get the section contents. */
6189 if (contents == NULL)
6191 /* Get cached copy if it exists. */
6192 if (elf_section_data (isec)->this_hdr.contents != NULL)
6193 contents = elf_section_data (isec)->this_hdr.contents;
6196 /* Go get them off disk. */
6197 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6202 /* Fix up the existing branch to hit the trampoline. */
6203 hit_addr = contents + roff;
6207 case R_PPC_LOCAL24PC:
6208 case R_PPC_PLTREL24:
6209 t0 = bfd_get_32 (abfd, hit_addr);
6211 t0 |= val & 0x3fffffc;
6212 bfd_put_32 (abfd, t0, hit_addr);
6216 case R_PPC_REL14_BRTAKEN:
6217 case R_PPC_REL14_BRNTAKEN:
6218 t0 = bfd_get_32 (abfd, hit_addr);
6221 bfd_put_32 (abfd, t0, hit_addr);
6226 /* Write out the trampolines. */
6236 struct one_fixup *f = fixups;
6237 fixups = fixups->next;
6242 contents = bfd_realloc_or_free (contents, trampoff);
6243 if (contents == NULL)
6246 isec->size = (isec->size + 3) & (bfd_vma) -4;
6247 /* Branch around the trampolines. */
6248 val = B + trampoff - isec->size;
6249 dest = contents + isec->size;
6250 isec->size = trampoff;
6251 bfd_put_32 (abfd, val, dest);
6254 if (link_info->shared)
6256 stub = shared_stub_entry;
6257 size = ARRAY_SIZE (shared_stub_entry);
6262 size = ARRAY_SIZE (stub_entry);
6266 while (dest < contents + trampoff)
6268 bfd_put_32 (abfd, stub[i], dest);
6274 BFD_ASSERT (i == 0);
6278 && symtab_hdr->contents != (unsigned char *) isymbuf)
6280 if (! link_info->keep_memory)
6284 /* Cache the symbols for elf_link_input_bfd. */
6285 symtab_hdr->contents = (unsigned char *) isymbuf;
6289 if (contents != NULL
6290 && elf_section_data (isec)->this_hdr.contents != contents)
6292 if (!changes && !link_info->keep_memory)
6296 /* Cache the section contents for elf_link_input_bfd. */
6297 elf_section_data (isec)->this_hdr.contents = contents;
6303 /* Append sufficient NOP relocs so we can write out relocation
6304 information for the trampolines. */
6305 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6306 * sizeof (*new_relocs));
6311 memcpy (new_relocs, internal_relocs,
6312 isec->reloc_count * sizeof (*new_relocs));
6313 for (ix = changes; ix--;)
6315 irel = new_relocs + ix + isec->reloc_count;
6317 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6319 if (internal_relocs != elf_section_data (isec)->relocs)
6320 free (internal_relocs);
6321 elf_section_data (isec)->relocs = new_relocs;
6322 isec->reloc_count += changes;
6323 elf_section_data (isec)->rel_hdr.sh_size
6324 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
6326 else if (elf_section_data (isec)->relocs != internal_relocs)
6327 free (internal_relocs);
6329 *again = changes != 0;
6330 if (!*again && link_info->relocatable)
6332 /* Convert the internal relax relocs to external form. */
6333 for (irel = internal_relocs; irel < irelend; irel++)
6334 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX32)
6336 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6338 /* Rewrite the reloc and convert one of the trailing nop
6339 relocs to describe this relocation. */
6340 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6341 /* The relocs are at the bottom 2 bytes */
6342 irel[0].r_offset += 2;
6343 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6344 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6345 irel[1].r_offset += 4;
6346 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6354 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6356 if (contents != NULL
6357 && elf_section_data (isec)->this_hdr.contents != contents)
6359 if (internal_relocs != NULL
6360 && elf_section_data (isec)->relocs != internal_relocs)
6361 free (internal_relocs);
6365 /* What to do when ld finds relocations against symbols defined in
6366 discarded sections. */
6369 ppc_elf_action_discarded (asection *sec)
6371 if (strcmp (".fixup", sec->name) == 0)
6374 if (strcmp (".got2", sec->name) == 0)
6377 return _bfd_elf_default_action_discarded (sec);
6380 /* Fill in the address for a pointer generated in a linker section. */
6383 elf_finish_pointer_linker_section (bfd *input_bfd,
6384 elf_linker_section_t *lsect,
6385 struct elf_link_hash_entry *h,
6387 const Elf_Internal_Rela *rel)
6389 elf_linker_section_pointers_t *linker_section_ptr;
6391 BFD_ASSERT (lsect != NULL);
6395 /* Handle global symbol. */
6396 struct ppc_elf_link_hash_entry *eh;
6398 eh = (struct ppc_elf_link_hash_entry *) h;
6399 BFD_ASSERT (eh->elf.def_regular);
6400 linker_section_ptr = eh->linker_section_pointer;
6404 /* Handle local symbol. */
6405 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6407 BFD_ASSERT (is_ppc_elf (input_bfd));
6408 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6409 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6412 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6415 BFD_ASSERT (linker_section_ptr != NULL);
6417 /* Offset will always be a multiple of four, so use the bottom bit
6418 as a "written" flag. */
6419 if ((linker_section_ptr->offset & 1) == 0)
6421 bfd_put_32 (lsect->section->owner,
6422 relocation + linker_section_ptr->addend,
6423 lsect->section->contents + linker_section_ptr->offset);
6424 linker_section_ptr->offset += 1;
6427 relocation = (lsect->section->output_offset
6428 + linker_section_ptr->offset - 1
6433 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6434 lsect->name, (long) relocation, (long) relocation);
6437 /* Subtract out the addend, because it will get added back in by the normal
6439 return relocation - linker_section_ptr->addend;
6442 #define PPC_LO(v) ((v) & 0xffff)
6443 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6444 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6447 write_glink_stub (struct plt_entry *ent, asection *plt_sec,
6448 struct bfd_link_info *info)
6450 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6451 bfd *output_bfd = info->output_bfd;
6455 plt = ((ent->plt.offset & ~1)
6456 + plt_sec->output_section->vma
6457 + plt_sec->output_offset);
6458 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6464 if (ent->addend >= 32768)
6466 + ent->sec->output_section->vma
6467 + ent->sec->output_offset);
6468 else if (htab->elf.hgot != NULL)
6469 got = SYM_VAL (htab->elf.hgot);
6473 if (plt + 0x8000 < 0x10000)
6475 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6477 bfd_put_32 (output_bfd, MTCTR_11, p);
6479 bfd_put_32 (output_bfd, BCTR, p);
6481 bfd_put_32 (output_bfd, NOP, p);
6486 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6488 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6490 bfd_put_32 (output_bfd, MTCTR_11, p);
6492 bfd_put_32 (output_bfd, BCTR, p);
6498 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6500 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6502 bfd_put_32 (output_bfd, MTCTR_11, p);
6504 bfd_put_32 (output_bfd, BCTR, p);
6509 /* The RELOCATE_SECTION function is called by the ELF backend linker
6510 to handle the relocations for a section.
6512 The relocs are always passed as Rela structures; if the section
6513 actually uses Rel structures, the r_addend field will always be
6516 This function is responsible for adjust the section contents as
6517 necessary, and (if using Rela relocs and generating a
6518 relocatable output file) adjusting the reloc addend as
6521 This function does not have to worry about setting the reloc
6522 address or the reloc symbol index.
6524 LOCAL_SYMS is a pointer to the swapped in local symbols.
6526 LOCAL_SECTIONS is an array giving the section in the input file
6527 corresponding to the st_shndx field of each local symbol.
6529 The global hash table entry for the global symbols can be found
6530 via elf_sym_hashes (input_bfd).
6532 When generating relocatable output, this function must handle
6533 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6534 going to be the section symbol corresponding to the output
6535 section, which means that the addend must be adjusted
6539 ppc_elf_relocate_section (bfd *output_bfd,
6540 struct bfd_link_info *info,
6542 asection *input_section,
6544 Elf_Internal_Rela *relocs,
6545 Elf_Internal_Sym *local_syms,
6546 asection **local_sections)
6548 Elf_Internal_Shdr *symtab_hdr;
6549 struct elf_link_hash_entry **sym_hashes;
6550 struct ppc_elf_link_hash_table *htab;
6551 Elf_Internal_Rela *rel;
6552 Elf_Internal_Rela *relend;
6553 Elf_Internal_Rela outrel;
6555 asection *got2, *sreloc = NULL;
6556 bfd_vma *local_got_offsets;
6557 bfd_boolean ret = TRUE;
6558 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6559 bfd_boolean is_vxworks_tls;
6562 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6563 "%ld relocations%s",
6564 input_bfd, input_section,
6565 (long) input_section->reloc_count,
6566 (info->relocatable) ? " (relocatable)" : "");
6569 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6571 /* Initialize howto table if not already done. */
6572 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6573 ppc_elf_howto_init ();
6575 htab = ppc_elf_hash_table (info);
6576 local_got_offsets = elf_local_got_offsets (input_bfd);
6577 symtab_hdr = &elf_symtab_hdr (input_bfd);
6578 sym_hashes = elf_sym_hashes (input_bfd);
6579 /* We have to handle relocations in vxworks .tls_vars sections
6580 specially, because the dynamic loader is 'weird'. */
6581 is_vxworks_tls = (htab->is_vxworks && info->shared
6582 && !strcmp (input_section->output_section->name,
6585 relend = relocs + input_section->reloc_count;
6586 for (; rel < relend; rel++)
6588 enum elf_ppc_reloc_type r_type;
6590 bfd_reloc_status_type r;
6591 Elf_Internal_Sym *sym;
6593 struct elf_link_hash_entry *h;
6594 const char *sym_name;
6595 reloc_howto_type *howto;
6596 unsigned long r_symndx;
6598 bfd_vma branch_bit, insn, from;
6599 bfd_boolean unresolved_reloc;
6601 unsigned int tls_type, tls_mask, tls_gd;
6602 struct plt_entry **ifunc;
6604 r_type = ELF32_R_TYPE (rel->r_info);
6608 unresolved_reloc = FALSE;
6610 r_symndx = ELF32_R_SYM (rel->r_info);
6612 if (r_symndx < symtab_hdr->sh_info)
6614 sym = local_syms + r_symndx;
6615 sec = local_sections[r_symndx];
6616 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6618 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6622 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6623 r_symndx, symtab_hdr, sym_hashes,
6625 unresolved_reloc, warned);
6627 sym_name = h->root.root.string;
6630 if (sec != NULL && elf_discarded_section (sec))
6632 /* For relocs against symbols from removed linkonce sections,
6633 or sections discarded by a linker script, we just want the
6634 section contents zeroed. Avoid any special processing. */
6636 if (r_type < R_PPC_max)
6637 howto = ppc_elf_howto_table[r_type];
6638 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6644 if (info->relocatable)
6647 && r_type == R_PPC_PLTREL24
6648 && rel->r_addend >= 32768)
6650 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6651 addend specifies the GOT pointer offset within .got2. */
6652 rel->r_addend += got2->output_offset;
6657 /* TLS optimizations. Replace instruction sequences and relocs
6658 based on information we collected in tls_optimize. We edit
6659 RELOCS so that --emit-relocs will output something sensible
6660 for the final instruction stream. */
6664 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6665 else if (local_got_offsets != NULL)
6667 struct plt_entry **local_plt;
6670 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6671 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
6672 tls_mask = lgot_masks[r_symndx];
6675 /* Ensure reloc mapping code below stays sane. */
6676 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6677 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6678 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6679 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6680 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6681 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6682 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6683 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6690 case R_PPC_GOT_TPREL16:
6691 case R_PPC_GOT_TPREL16_LO:
6692 if ((tls_mask & TLS_TLS) != 0
6693 && (tls_mask & TLS_TPREL) == 0)
6696 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6698 insn |= 0x3c020000; /* addis 0,2,0 */
6699 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6700 r_type = R_PPC_TPREL16_HA;
6701 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6706 if ((tls_mask & TLS_TLS) != 0
6707 && (tls_mask & TLS_TPREL) == 0)
6710 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6711 if ((insn & ((31 << 26) | (31 << 11)))
6712 == ((31 << 26) | (2 << 11)))
6713 rtra = insn & ((1 << 26) - (1 << 16));
6714 else if ((insn & ((31 << 26) | (31 << 16)))
6715 == ((31 << 26) | (2 << 16)))
6716 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6719 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6722 else if ((insn & (31 << 1)) == 23 << 1
6723 && ((insn & (31 << 6)) < 14 << 6
6724 || ((insn & (31 << 6)) >= 16 << 6
6725 && (insn & (31 << 6)) < 24 << 6)))
6726 /* load and store indexed -> dform. */
6727 insn = (32 | ((insn >> 6) & 31)) << 26;
6728 else if ((insn & (31 << 1)) == 21 << 1
6729 && (insn & (0x1a << 6)) == 0)
6730 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6731 insn = (((58 | ((insn >> 6) & 4)) << 26)
6732 | ((insn >> 6) & 1));
6733 else if ((insn & (31 << 1)) == 21 << 1
6734 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6736 insn = (58 << 26) | 2;
6740 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6741 r_type = R_PPC_TPREL16_LO;
6742 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6744 /* Was PPC_TLS which sits on insn boundary, now
6745 PPC_TPREL16_LO which is at low-order half-word. */
6746 rel->r_offset += d_offset;
6750 case R_PPC_GOT_TLSGD16_HI:
6751 case R_PPC_GOT_TLSGD16_HA:
6752 tls_gd = TLS_TPRELGD;
6753 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6757 case R_PPC_GOT_TLSLD16_HI:
6758 case R_PPC_GOT_TLSLD16_HA:
6759 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6762 if ((tls_mask & tls_gd) != 0)
6763 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6764 + R_PPC_GOT_TPREL16);
6767 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6768 rel->r_offset -= d_offset;
6769 r_type = R_PPC_NONE;
6771 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6775 case R_PPC_GOT_TLSGD16:
6776 case R_PPC_GOT_TLSGD16_LO:
6777 tls_gd = TLS_TPRELGD;
6778 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6782 case R_PPC_GOT_TLSLD16:
6783 case R_PPC_GOT_TLSLD16_LO:
6784 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6786 unsigned int insn1, insn2;
6790 offset = (bfd_vma) -1;
6791 /* If not using the newer R_PPC_TLSGD/LD to mark
6792 __tls_get_addr calls, we must trust that the call
6793 stays with its arg setup insns, ie. that the next
6794 reloc is the __tls_get_addr call associated with
6795 the current reloc. Edit both insns. */
6796 if (input_section->has_tls_get_addr_call
6798 && branch_reloc_hash_match (input_bfd, rel + 1,
6799 htab->tls_get_addr))
6800 offset = rel[1].r_offset;
6801 if ((tls_mask & tls_gd) != 0)
6804 insn1 = bfd_get_32 (output_bfd,
6805 contents + rel->r_offset - d_offset);
6806 insn1 &= (1 << 26) - 1;
6807 insn1 |= 32 << 26; /* lwz */
6808 if (offset != (bfd_vma) -1)
6811 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6813 insn2 = 0x7c631214; /* add 3,3,2 */
6814 bfd_put_32 (output_bfd, insn2, contents + offset);
6816 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6817 + R_PPC_GOT_TPREL16);
6818 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6823 insn1 = 0x3c620000; /* addis 3,2,0 */
6826 /* Was an LD reloc. */
6828 r_symndx < symtab_hdr->sh_info;
6830 if (local_sections[r_symndx] == sec)
6832 if (r_symndx >= symtab_hdr->sh_info)
6834 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6836 rel->r_addend -= (local_syms[r_symndx].st_value
6837 + sec->output_offset
6838 + sec->output_section->vma);
6840 r_type = R_PPC_TPREL16_HA;
6841 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6842 if (offset != (bfd_vma) -1)
6844 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6845 rel[1].r_offset = offset + d_offset;
6846 rel[1].r_addend = rel->r_addend;
6847 insn2 = 0x38630000; /* addi 3,3,0 */
6848 bfd_put_32 (output_bfd, insn2, contents + offset);
6851 bfd_put_32 (output_bfd, insn1,
6852 contents + rel->r_offset - d_offset);
6855 /* We changed the symbol on an LD reloc. Start over
6856 in order to get h, sym, sec etc. right. */
6864 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6867 bfd_vma offset = rel->r_offset;
6869 if ((tls_mask & TLS_TPRELGD) != 0)
6872 r_type = R_PPC_NONE;
6873 insn2 = 0x7c631214; /* add 3,3,2 */
6878 r_type = R_PPC_TPREL16_LO;
6879 rel->r_offset += d_offset;
6880 insn2 = 0x38630000; /* addi 3,3,0 */
6882 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6883 bfd_put_32 (output_bfd, insn2, contents + offset);
6884 /* Zap the reloc on the _tls_get_addr call too. */
6885 BFD_ASSERT (offset == rel[1].r_offset);
6886 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6892 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6897 r_symndx < symtab_hdr->sh_info;
6899 if (local_sections[r_symndx] == sec)
6901 if (r_symndx >= symtab_hdr->sh_info)
6903 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6905 rel->r_addend -= (local_syms[r_symndx].st_value
6906 + sec->output_offset
6907 + sec->output_section->vma);
6909 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6910 rel->r_offset += d_offset;
6911 insn2 = 0x38630000; /* addi 3,3,0 */
6912 bfd_put_32 (output_bfd, insn2,
6913 contents + rel->r_offset - d_offset);
6914 /* Zap the reloc on the _tls_get_addr call too. */
6915 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
6916 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6924 /* Handle other relocations that tweak non-addend part of insn. */
6931 /* Branch taken prediction relocations. */
6932 case R_PPC_ADDR14_BRTAKEN:
6933 case R_PPC_REL14_BRTAKEN:
6934 branch_bit = BRANCH_PREDICT_BIT;
6937 /* Branch not taken prediction relocations. */
6938 case R_PPC_ADDR14_BRNTAKEN:
6939 case R_PPC_REL14_BRNTAKEN:
6940 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6941 insn &= ~BRANCH_PREDICT_BIT;
6944 from = (rel->r_offset
6945 + input_section->output_offset
6946 + input_section->output_section->vma);
6948 /* Invert 'y' bit if not the default. */
6949 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6950 insn ^= BRANCH_PREDICT_BIT;
6952 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6957 if (!htab->is_vxworks)
6959 struct plt_entry *ent;
6963 if (h->type == STT_GNU_IFUNC)
6964 ifunc = &h->plt.plist;
6966 else if (local_got_offsets != NULL
6967 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6969 struct plt_entry **local_plt;
6971 local_plt = (struct plt_entry **) (local_got_offsets
6972 + symtab_hdr->sh_info);
6973 ifunc = local_plt + r_symndx;
6979 || is_branch_reloc (r_type)))
6982 if (r_type == R_PPC_PLTREL24 && info->shared)
6983 addend = rel->r_addend;
6984 ent = find_plt_ent (ifunc, got2, addend);
6988 if (h == NULL && (ent->plt.offset & 1) == 0)
6990 Elf_Internal_Rela rela;
6993 rela.r_offset = (htab->iplt->output_section->vma
6994 + htab->iplt->output_offset
6996 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
6997 rela.r_addend = relocation;
6998 loc = htab->reliplt->contents;
6999 loc += (htab->reliplt->reloc_count++
7000 * sizeof (Elf32_External_Rela));
7001 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7003 ent->plt.offset |= 1;
7005 if (h == NULL && (ent->glink_offset & 1) == 0)
7007 write_glink_stub (ent, htab->iplt, info);
7008 ent->glink_offset |= 1;
7011 unresolved_reloc = FALSE;
7012 if (htab->plt_type == PLT_NEW
7013 || !htab->elf.dynamic_sections_created
7015 relocation = (htab->glink->output_section->vma
7016 + htab->glink->output_offset
7017 + (ent->glink_offset & ~1));
7019 relocation = (htab->plt->output_section->vma
7020 + htab->plt->output_offset
7025 addend = rel->r_addend;
7028 if (r_type < R_PPC_max)
7029 howto = ppc_elf_howto_table[r_type];
7033 (*_bfd_error_handler)
7034 (_("%B: unknown relocation type %d for symbol %s"),
7035 input_bfd, (int) r_type, sym_name);
7037 bfd_set_error (bfd_error_bad_value);
7045 case R_PPC_EMB_MRKREF:
7046 case R_PPC_GNU_VTINHERIT:
7047 case R_PPC_GNU_VTENTRY:
7050 /* GOT16 relocations. Like an ADDR16 using the symbol's
7051 address in the GOT as relocation value instead of the
7052 symbol's value itself. Also, create a GOT entry for the
7053 symbol and put the symbol value there. */
7054 case R_PPC_GOT_TLSGD16:
7055 case R_PPC_GOT_TLSGD16_LO:
7056 case R_PPC_GOT_TLSGD16_HI:
7057 case R_PPC_GOT_TLSGD16_HA:
7058 tls_type = TLS_TLS | TLS_GD;
7061 case R_PPC_GOT_TLSLD16:
7062 case R_PPC_GOT_TLSLD16_LO:
7063 case R_PPC_GOT_TLSLD16_HI:
7064 case R_PPC_GOT_TLSLD16_HA:
7065 tls_type = TLS_TLS | TLS_LD;
7068 case R_PPC_GOT_TPREL16:
7069 case R_PPC_GOT_TPREL16_LO:
7070 case R_PPC_GOT_TPREL16_HI:
7071 case R_PPC_GOT_TPREL16_HA:
7072 tls_type = TLS_TLS | TLS_TPREL;
7075 case R_PPC_GOT_DTPREL16:
7076 case R_PPC_GOT_DTPREL16_LO:
7077 case R_PPC_GOT_DTPREL16_HI:
7078 case R_PPC_GOT_DTPREL16_HA:
7079 tls_type = TLS_TLS | TLS_DTPREL;
7083 case R_PPC_GOT16_LO:
7084 case R_PPC_GOT16_HI:
7085 case R_PPC_GOT16_HA:
7089 /* Relocation is to the entry for this symbol in the global
7095 if (htab->got == NULL)
7099 if (tls_type == (TLS_TLS | TLS_LD)
7101 || !h->def_dynamic))
7102 offp = &htab->tlsld_got.offset;
7106 dyn = htab->elf.dynamic_sections_created;
7107 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7109 && SYMBOL_REFERENCES_LOCAL (info, h)))
7110 /* This is actually a static link, or it is a
7111 -Bsymbolic link and the symbol is defined
7112 locally, or the symbol was forced to be local
7113 because of a version file. */
7118 unresolved_reloc = FALSE;
7120 offp = &h->got.offset;
7124 if (local_got_offsets == NULL)
7126 offp = &local_got_offsets[r_symndx];
7129 /* The offset must always be a multiple of 4. We use the
7130 least significant bit to record whether we have already
7131 processed this entry. */
7138 unsigned int tls_m = (tls_mask
7139 & (TLS_LD | TLS_GD | TLS_DTPREL
7140 | TLS_TPREL | TLS_TPRELGD));
7142 if (offp == &htab->tlsld_got.offset)
7148 /* We might have multiple got entries for this sym.
7149 Initialize them all. */
7154 if ((tls_m & TLS_LD) != 0)
7156 tls_ty = TLS_TLS | TLS_LD;
7159 else if ((tls_m & TLS_GD) != 0)
7161 tls_ty = TLS_TLS | TLS_GD;
7164 else if ((tls_m & TLS_DTPREL) != 0)
7166 tls_ty = TLS_TLS | TLS_DTPREL;
7167 tls_m &= ~TLS_DTPREL;
7169 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7171 tls_ty = TLS_TLS | TLS_TPREL;
7175 /* Generate relocs for the dynamic linker. */
7177 if ((info->shared || indx != 0)
7178 && (offp == &htab->tlsld_got.offset
7180 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7181 || h->root.type != bfd_link_hash_undefweak))
7182 rsec = htab->relgot;
7183 else if (ifunc != NULL)
7184 rsec = htab->reliplt;
7187 outrel.r_offset = (htab->got->output_section->vma
7188 + htab->got->output_offset
7190 outrel.r_addend = 0;
7191 if (tls_ty & (TLS_LD | TLS_GD))
7193 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7194 if (tls_ty == (TLS_TLS | TLS_GD))
7196 loc = rsec->contents;
7197 loc += (rsec->reloc_count++
7198 * sizeof (Elf32_External_Rela));
7199 bfd_elf32_swap_reloca_out (output_bfd,
7201 outrel.r_offset += 4;
7203 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7206 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7207 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7208 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7209 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7211 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7212 else if (ifunc != NULL)
7213 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7215 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7216 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7218 outrel.r_addend += relocation;
7219 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7220 outrel.r_addend -= htab->elf.tls_sec->vma;
7222 loc = rsec->contents;
7223 loc += (rsec->reloc_count++
7224 * sizeof (Elf32_External_Rela));
7225 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7228 /* Init the .got section contents if we're not
7229 emitting a reloc. */
7232 bfd_vma value = relocation;
7234 if (tls_ty == (TLS_TLS | TLS_LD))
7236 else if (tls_ty != 0)
7238 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7239 if (tls_ty == (TLS_TLS | TLS_TPREL))
7240 value += DTP_OFFSET - TP_OFFSET;
7242 if (tls_ty == (TLS_TLS | TLS_GD))
7244 bfd_put_32 (output_bfd, value,
7245 htab->got->contents + off + 4);
7249 bfd_put_32 (output_bfd, value,
7250 htab->got->contents + off);
7254 if (tls_ty & (TLS_LD | TLS_GD))
7263 if (off >= (bfd_vma) -2)
7266 if ((tls_type & TLS_TLS) != 0)
7268 if (tls_type != (TLS_TLS | TLS_LD))
7270 if ((tls_mask & TLS_LD) != 0
7272 || !h->def_dynamic))
7274 if (tls_type != (TLS_TLS | TLS_GD))
7276 if ((tls_mask & TLS_GD) != 0)
7278 if (tls_type != (TLS_TLS | TLS_DTPREL))
7280 if ((tls_mask & TLS_DTPREL) != 0)
7287 relocation = (htab->got->output_section->vma
7288 + htab->got->output_offset
7290 - SYM_VAL (htab->elf.hgot));
7292 /* Addends on got relocations don't make much sense.
7293 x+off@got is actually x@got+off, and since the got is
7294 generated by a hash table traversal, the value in the
7295 got at entry m+n bears little relation to the entry m. */
7297 (*_bfd_error_handler)
7298 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7301 (long) rel->r_offset,
7307 /* Relocations that need no special processing. */
7308 case R_PPC_LOCAL24PC:
7309 /* It makes no sense to point a local relocation
7310 at a symbol not in this object. */
7311 if (unresolved_reloc)
7313 if (! (*info->callbacks->undefined_symbol) (info,
7314 h->root.root.string,
7324 case R_PPC_DTPREL16:
7325 case R_PPC_DTPREL16_LO:
7326 case R_PPC_DTPREL16_HI:
7327 case R_PPC_DTPREL16_HA:
7328 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7331 /* Relocations that may need to be propagated if this is a shared
7334 case R_PPC_TPREL16_LO:
7335 case R_PPC_TPREL16_HI:
7336 case R_PPC_TPREL16_HA:
7337 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7338 /* The TPREL16 relocs shouldn't really be used in shared
7339 libs as they will result in DT_TEXTREL being set, but
7340 support them anyway. */
7344 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7347 case R_PPC_DTPREL32:
7348 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7351 case R_PPC_DTPMOD32:
7357 case R_PPC_REL16_LO:
7358 case R_PPC_REL16_HI:
7359 case R_PPC_REL16_HA:
7363 if (h == NULL || h == htab->elf.hgot)
7369 case R_PPC_ADDR16_LO:
7370 case R_PPC_ADDR16_HI:
7371 case R_PPC_ADDR16_HA:
7378 case R_PPC_REL14_BRTAKEN:
7379 case R_PPC_REL14_BRNTAKEN:
7380 /* If these relocations are not to a named symbol, they can be
7381 handled right here, no need to bother the dynamic linker. */
7382 if (SYMBOL_CALLS_LOCAL (info, h)
7383 || h == htab->elf.hgot)
7389 case R_PPC_ADDR14_BRTAKEN:
7390 case R_PPC_ADDR14_BRNTAKEN:
7391 if (h != NULL && !info->shared)
7396 if ((input_section->flags & SEC_ALLOC) == 0
7402 && ((h->root.type == bfd_link_hash_undefined
7403 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7404 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7405 || (h->root.type == bfd_link_hash_undefweak
7406 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
7407 && (must_be_dyn_reloc (info, r_type)
7408 || !SYMBOL_CALLS_LOCAL (info, h)))
7409 || (ELIMINATE_COPY_RELOCS
7414 && !h->def_regular))
7419 fprintf (stderr, "ppc_elf_relocate_section needs to "
7420 "create relocation for %s\n",
7421 (h && h->root.root.string
7422 ? h->root.root.string : "<unknown>"));
7425 /* When generating a shared object, these relocations
7426 are copied into the output file to be resolved at run
7430 sreloc = elf_section_data (input_section)->sreloc;
7431 if (!htab->elf.dynamic_sections_created)
7432 sreloc = htab->reliplt;
7439 _bfd_elf_section_offset (output_bfd, info, input_section,
7441 if (outrel.r_offset == (bfd_vma) -1
7442 || outrel.r_offset == (bfd_vma) -2)
7443 skip = (int) outrel.r_offset;
7444 outrel.r_offset += (input_section->output_section->vma
7445 + input_section->output_offset);
7448 memset (&outrel, 0, sizeof outrel);
7450 && (h->root.type == bfd_link_hash_undefined
7451 || h->root.type == bfd_link_hash_undefweak))
7452 || !SYMBOL_REFERENCES_LOCAL (info, h))
7454 unresolved_reloc = FALSE;
7455 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7456 outrel.r_addend = rel->r_addend;
7460 outrel.r_addend = relocation + rel->r_addend;
7462 if (r_type != R_PPC_ADDR32)
7468 /* If we get here when building a static
7469 executable, then the libc startup function
7470 responsible for applying indirect function
7471 relocations is going to complain about
7473 If we get here when building a dynamic
7474 executable, it will be because we have
7475 a text relocation. The dynamic loader
7476 will set the text segment writable and
7477 non-executable to apply text relocations.
7478 So we'll segfault when trying to run the
7479 indirection function to resolve the reloc. */
7480 (*_bfd_error_handler)
7481 (_("%B(%A+0x%lx): relocation %s for indirect "
7482 "function %s unsupported"),
7485 (long) rel->r_offset,
7490 else if (r_symndx == 0 || bfd_is_abs_section (sec))
7492 else if (sec == NULL || sec->owner == NULL)
7494 bfd_set_error (bfd_error_bad_value);
7501 /* We are turning this relocation into one
7502 against a section symbol. It would be
7503 proper to subtract the symbol's value,
7504 osec->vma, from the emitted reloc addend,
7505 but ld.so expects buggy relocs.
7506 FIXME: Why not always use a zero index? */
7507 osec = sec->output_section;
7508 indx = elf_section_data (osec)->dynindx;
7511 osec = htab->elf.text_index_section;
7512 indx = elf_section_data (osec)->dynindx;
7514 BFD_ASSERT (indx != 0);
7517 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7518 indx, osec->name, osec->flags,
7519 h->root.root.string);
7523 outrel.r_info = ELF32_R_INFO (indx, r_type);
7525 else if (ifunc != NULL)
7526 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7528 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7531 loc = sreloc->contents;
7532 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7533 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7538 /* This reloc will be computed at runtime. We clear the memory
7539 so that it contains predictable value. */
7541 && ((input_section->flags & SEC_ALLOC) != 0
7542 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7544 relocation = howto->pc_relative ? outrel.r_offset : 0;
7551 case R_PPC_RELAX32PC_PLT:
7552 case R_PPC_RELAX32_PLT:
7555 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7556 info->shared ? addend : 0);
7557 if (htab->plt_type == PLT_NEW)
7558 relocation = (htab->glink->output_section->vma
7559 + htab->glink->output_offset
7560 + ent->glink_offset);
7562 relocation = (htab->plt->output_section->vma
7563 + htab->plt->output_offset
7566 if (r_type == R_PPC_RELAX32_PLT)
7570 case R_PPC_RELAX32PC:
7571 relocation -= (input_section->output_section->vma
7572 + input_section->output_offset
7573 + rel->r_offset - 4);
7582 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7583 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7585 /* We're clearing the bits for R_PPC_ADDR16_HA
7586 and R_PPC_ADDR16_LO here. */
7590 /* t0 is HA, t1 is LO */
7591 relocation += addend;
7592 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7593 t1 |= relocation & 0xffff;
7595 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7596 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7598 /* Rewrite the reloc and convert one of the trailing nop
7599 relocs to describe this relocation. */
7600 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7601 /* The relocs are at the bottom 2 bytes */
7602 rel[0].r_offset += 2;
7603 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7604 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7605 rel[1].r_offset += 4;
7606 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7611 /* Indirect .sdata relocation. */
7612 case R_PPC_EMB_SDAI16:
7613 BFD_ASSERT (htab->sdata[0].section != NULL);
7615 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7616 h, relocation, rel);
7619 /* Indirect .sdata2 relocation. */
7620 case R_PPC_EMB_SDA2I16:
7621 BFD_ASSERT (htab->sdata[1].section != NULL);
7623 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7624 h, relocation, rel);
7627 /* Handle the TOC16 reloc. We want to use the offset within the .got
7628 section, not the actual VMA. This is appropriate when generating
7629 an embedded ELF object, for which the .got section acts like the
7630 AIX .toc section. */
7631 case R_PPC_TOC16: /* phony GOT16 relocations */
7632 if (sec == NULL || sec->output_section == NULL)
7634 unresolved_reloc = TRUE;
7637 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7638 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7640 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7643 case R_PPC_PLTREL24:
7644 if (h == NULL || ifunc != NULL)
7646 /* Relocation is to the entry for this symbol in the
7647 procedure linkage table. */
7649 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7650 info->shared ? addend : 0);
7653 || htab->plt == NULL)
7655 /* We didn't make a PLT entry for this symbol. This
7656 happens when statically linking PIC code, or when
7657 using -Bsymbolic. */
7661 unresolved_reloc = FALSE;
7662 if (htab->plt_type == PLT_NEW)
7663 relocation = (htab->glink->output_section->vma
7664 + htab->glink->output_offset
7665 + ent->glink_offset);
7667 relocation = (htab->plt->output_section->vma
7668 + htab->plt->output_offset
7673 /* Relocate against _SDA_BASE_. */
7674 case R_PPC_SDAREL16:
7678 if (sec == NULL || sec->output_section == NULL)
7680 unresolved_reloc = TRUE;
7684 name = bfd_get_section_name (abfd, sec->output_section);
7685 if (! ((CONST_STRNEQ (name, ".sdata")
7686 && (name[6] == 0 || name[6] == '.'))
7687 || (CONST_STRNEQ (name, ".sbss")
7688 && (name[5] == 0 || name[5] == '.'))))
7690 (*_bfd_error_handler)
7691 (_("%B: the target (%s) of a %s relocation is "
7692 "in the wrong output section (%s)"),
7698 addend -= SYM_VAL (htab->sdata[0].sym);
7702 /* Relocate against _SDA2_BASE_. */
7703 case R_PPC_EMB_SDA2REL:
7707 if (sec == NULL || sec->output_section == NULL)
7709 unresolved_reloc = TRUE;
7713 name = bfd_get_section_name (abfd, sec->output_section);
7714 if (! (CONST_STRNEQ (name, ".sdata2")
7715 || CONST_STRNEQ (name, ".sbss2")))
7717 (*_bfd_error_handler)
7718 (_("%B: the target (%s) of a %s relocation is "
7719 "in the wrong output section (%s)"),
7725 bfd_set_error (bfd_error_bad_value);
7729 addend -= SYM_VAL (htab->sdata[1].sym);
7733 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7734 case R_PPC_EMB_SDA21:
7735 case R_PPC_EMB_RELSDA:
7740 if (sec == NULL || sec->output_section == NULL)
7742 unresolved_reloc = TRUE;
7746 name = bfd_get_section_name (abfd, sec->output_section);
7747 if (((CONST_STRNEQ (name, ".sdata")
7748 && (name[6] == 0 || name[6] == '.'))
7749 || (CONST_STRNEQ (name, ".sbss")
7750 && (name[5] == 0 || name[5] == '.'))))
7753 addend -= SYM_VAL (htab->sdata[0].sym);
7755 else if (CONST_STRNEQ (name, ".sdata2")
7756 || CONST_STRNEQ (name, ".sbss2"))
7759 addend -= SYM_VAL (htab->sdata[1].sym);
7761 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7762 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7768 (*_bfd_error_handler)
7769 (_("%B: the target (%s) of a %s relocation is "
7770 "in the wrong output section (%s)"),
7776 bfd_set_error (bfd_error_bad_value);
7781 if (r_type == R_PPC_EMB_SDA21)
7782 { /* fill in register field */
7783 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7784 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7785 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7790 /* Relocate against the beginning of the section. */
7792 case R_PPC_SECTOFF_LO:
7793 case R_PPC_SECTOFF_HI:
7794 case R_PPC_SECTOFF_HA:
7795 if (sec == NULL || sec->output_section == NULL)
7797 unresolved_reloc = TRUE;
7800 addend -= sec->output_section->vma;
7803 /* Negative relocations. */
7804 case R_PPC_EMB_NADDR32:
7805 case R_PPC_EMB_NADDR16:
7806 case R_PPC_EMB_NADDR16_LO:
7807 case R_PPC_EMB_NADDR16_HI:
7808 case R_PPC_EMB_NADDR16_HA:
7809 addend -= 2 * relocation;
7813 case R_PPC_GLOB_DAT:
7814 case R_PPC_JMP_SLOT:
7815 case R_PPC_RELATIVE:
7816 case R_PPC_IRELATIVE:
7818 case R_PPC_PLTREL32:
7819 case R_PPC_PLT16_LO:
7820 case R_PPC_PLT16_HI:
7821 case R_PPC_PLT16_HA:
7823 case R_PPC_EMB_RELSEC16:
7824 case R_PPC_EMB_RELST_LO:
7825 case R_PPC_EMB_RELST_HI:
7826 case R_PPC_EMB_RELST_HA:
7827 case R_PPC_EMB_BIT_FLD:
7828 (*_bfd_error_handler)
7829 (_("%B: relocation %s is not yet supported for symbol %s."),
7834 bfd_set_error (bfd_error_invalid_operation);
7839 /* Do any further special processing. */
7845 case R_PPC_ADDR16_HA:
7846 case R_PPC_REL16_HA:
7847 case R_PPC_SECTOFF_HA:
7848 case R_PPC_TPREL16_HA:
7849 case R_PPC_DTPREL16_HA:
7850 case R_PPC_EMB_NADDR16_HA:
7851 case R_PPC_EMB_RELST_HA:
7852 /* It's just possible that this symbol is a weak symbol
7853 that's not actually defined anywhere. In that case,
7854 'sec' would be NULL, and we should leave the symbol
7855 alone (it will be set to zero elsewhere in the link). */
7860 case R_PPC_PLT16_HA:
7861 case R_PPC_GOT16_HA:
7862 case R_PPC_GOT_TLSGD16_HA:
7863 case R_PPC_GOT_TLSLD16_HA:
7864 case R_PPC_GOT_TPREL16_HA:
7865 case R_PPC_GOT_DTPREL16_HA:
7866 /* Add 0x10000 if sign bit in 0:15 is set.
7867 Bits 0:15 are not used. */
7873 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7874 "offset = %ld, addend = %ld\n",
7879 (long) rel->r_offset,
7883 if (unresolved_reloc
7884 && !((input_section->flags & SEC_DEBUGGING) != 0
7887 (*_bfd_error_handler)
7888 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7891 (long) rel->r_offset,
7897 r = _bfd_final_link_relocate (howto,
7905 if (r != bfd_reloc_ok)
7907 if (r == bfd_reloc_overflow)
7912 && h->root.type == bfd_link_hash_undefweak
7913 && howto->pc_relative)
7915 /* Assume this is a call protected by other code that
7916 detect the symbol is undefined. If this is the case,
7917 we can safely ignore the overflow. If not, the
7918 program is hosed anyway, and a little warning isn't
7924 if (! (*info->callbacks->reloc_overflow) (info,
7925 (h ? &h->root : NULL),
7936 (*_bfd_error_handler)
7937 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7938 input_bfd, input_section,
7939 (long) rel->r_offset, howto->name, sym_name, (int) r);
7946 fprintf (stderr, "\n");
7952 /* Finish up dynamic symbol handling. We set the contents of various
7953 dynamic sections here. */
7956 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7957 struct bfd_link_info *info,
7958 struct elf_link_hash_entry *h,
7959 Elf_Internal_Sym *sym)
7961 struct ppc_elf_link_hash_table *htab;
7962 struct plt_entry *ent;
7963 bfd_boolean doneone;
7966 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7967 h->root.root.string);
7970 htab = ppc_elf_hash_table (info);
7971 BFD_ASSERT (htab->elf.dynobj != NULL);
7974 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7975 if (ent->plt.offset != (bfd_vma) -1)
7979 Elf_Internal_Rela rela;
7981 bfd_vma reloc_index;
7983 if (htab->plt_type == PLT_NEW
7984 || !htab->elf.dynamic_sections_created
7985 || h->dynindx == -1)
7986 reloc_index = ent->plt.offset / 4;
7989 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7990 / htab->plt_slot_size);
7991 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
7992 && htab->plt_type == PLT_OLD)
7993 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7996 /* This symbol has an entry in the procedure linkage table.
7998 if (htab->plt_type == PLT_VXWORKS
7999 && htab->elf.dynamic_sections_created
8000 && h->dynindx != -1)
8003 const bfd_vma *plt_entry;
8005 /* The first three entries in .got.plt are reserved. */
8006 got_offset = (reloc_index + 3) * 4;
8008 /* Use the right PLT. */
8009 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8010 : ppc_elf_vxworks_plt_entry;
8012 /* Fill in the .plt on VxWorks. */
8015 bfd_put_32 (output_bfd,
8016 plt_entry[0] | PPC_HA (got_offset),
8017 htab->plt->contents + ent->plt.offset + 0);
8018 bfd_put_32 (output_bfd,
8019 plt_entry[1] | PPC_LO (got_offset),
8020 htab->plt->contents + ent->plt.offset + 4);
8024 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8026 bfd_put_32 (output_bfd,
8027 plt_entry[0] | PPC_HA (got_loc),
8028 htab->plt->contents + ent->plt.offset + 0);
8029 bfd_put_32 (output_bfd,
8030 plt_entry[1] | PPC_LO (got_loc),
8031 htab->plt->contents + ent->plt.offset + 4);
8034 bfd_put_32 (output_bfd, plt_entry[2],
8035 htab->plt->contents + ent->plt.offset + 8);
8036 bfd_put_32 (output_bfd, plt_entry[3],
8037 htab->plt->contents + ent->plt.offset + 12);
8039 /* This instruction is an immediate load. The value loaded is
8040 the byte offset of the R_PPC_JMP_SLOT relocation from the
8041 start of the .rela.plt section. The value is stored in the
8042 low-order 16 bits of the load instruction. */
8043 /* NOTE: It appears that this is now an index rather than a
8044 prescaled offset. */
8045 bfd_put_32 (output_bfd,
8046 plt_entry[4] | reloc_index,
8047 htab->plt->contents + ent->plt.offset + 16);
8048 /* This instruction is a PC-relative branch whose target is
8049 the start of the PLT section. The address of this branch
8050 instruction is 20 bytes beyond the start of this PLT entry.
8051 The address is encoded in bits 6-29, inclusive. The value
8052 stored is right-shifted by two bits, permitting a 26-bit
8054 bfd_put_32 (output_bfd,
8056 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8057 htab->plt->contents + ent->plt.offset + 20);
8058 bfd_put_32 (output_bfd, plt_entry[6],
8059 htab->plt->contents + ent->plt.offset + 24);
8060 bfd_put_32 (output_bfd, plt_entry[7],
8061 htab->plt->contents + ent->plt.offset + 28);
8063 /* Fill in the GOT entry corresponding to this PLT slot with
8064 the address immediately after the the "bctr" instruction
8065 in this PLT entry. */
8066 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8067 + htab->plt->output_offset
8068 + ent->plt.offset + 16),
8069 htab->sgotplt->contents + got_offset);
8073 /* Fill in a couple of entries in .rela.plt.unloaded. */
8074 loc = htab->srelplt2->contents
8075 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8076 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8077 * sizeof (Elf32_External_Rela));
8079 /* Provide the @ha relocation for the first instruction. */
8080 rela.r_offset = (htab->plt->output_section->vma
8081 + htab->plt->output_offset
8082 + ent->plt.offset + 2);
8083 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8085 rela.r_addend = got_offset;
8086 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8087 loc += sizeof (Elf32_External_Rela);
8089 /* Provide the @l relocation for the second instruction. */
8090 rela.r_offset = (htab->plt->output_section->vma
8091 + htab->plt->output_offset
8092 + ent->plt.offset + 6);
8093 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8095 rela.r_addend = got_offset;
8096 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8097 loc += sizeof (Elf32_External_Rela);
8099 /* Provide a relocation for the GOT entry corresponding to this
8100 PLT slot. Point it at the middle of the .plt entry. */
8101 rela.r_offset = (htab->sgotplt->output_section->vma
8102 + htab->sgotplt->output_offset
8104 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8106 rela.r_addend = ent->plt.offset + 16;
8107 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8110 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8111 In particular, the offset for the relocation is not the
8112 address of the PLT entry for this function, as specified
8113 by the ABI. Instead, the offset is set to the address of
8114 the GOT slot for this function. See EABI 4.4.4.1. */
8115 rela.r_offset = (htab->sgotplt->output_section->vma
8116 + htab->sgotplt->output_offset
8122 asection *splt = htab->plt;
8123 if (!htab->elf.dynamic_sections_created
8124 || h->dynindx == -1)
8127 rela.r_offset = (splt->output_section->vma
8128 + splt->output_offset
8130 if (htab->plt_type == PLT_OLD
8131 || !htab->elf.dynamic_sections_created
8132 || h->dynindx == -1)
8134 /* We don't need to fill in the .plt. The ppc dynamic
8135 linker will fill it in. */
8139 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8140 + htab->glink->output_section->vma
8141 + htab->glink->output_offset);
8142 bfd_put_32 (output_bfd, val,
8143 splt->contents + ent->plt.offset);
8147 /* Fill in the entry in the .rela.plt section. */
8149 if (!htab->elf.dynamic_sections_created
8150 || h->dynindx == -1)
8152 BFD_ASSERT (h->type == STT_GNU_IFUNC
8154 && (h->root.type == bfd_link_hash_defined
8155 || h->root.type == bfd_link_hash_defweak));
8156 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8157 rela.r_addend = SYM_VAL (h);
8160 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
8162 if (!htab->elf.dynamic_sections_created
8163 || h->dynindx == -1)
8164 loc = (htab->reliplt->contents
8165 + (htab->reliplt->reloc_count++
8166 * sizeof (Elf32_External_Rela)));
8168 loc = (htab->relplt->contents
8169 + reloc_index * sizeof (Elf32_External_Rela));
8170 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8172 if (!h->def_regular)
8174 /* Mark the symbol as undefined, rather than as
8175 defined in the .plt section. Leave the value if
8176 there were any relocations where pointer equality
8177 matters (this is a clue for the dynamic linker, to
8178 make function pointer comparisons work between an
8179 application and shared library), otherwise set it
8181 sym->st_shndx = SHN_UNDEF;
8182 if (!h->pointer_equality_needed)
8184 else if (!h->ref_regular_nonweak)
8186 /* This breaks function pointer comparisons, but
8187 that is better than breaking tests for a NULL
8188 function pointer. */
8192 else if (h->type == STT_GNU_IFUNC
8195 /* Set the value of ifunc symbols in a non-pie
8196 executable to the glink entry. This is to avoid
8197 text relocations. We can't do this for ifunc in
8198 allocate_dynrelocs, as we do for normal dynamic
8199 function symbols with plt entries, because we need
8200 to keep the original value around for the ifunc
8202 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8203 (output_bfd, htab->glink->output_section));
8204 sym->st_value = (ent->glink_offset +
8205 htab->glink->output_offset
8206 + htab->glink->output_section->vma);
8211 if (htab->plt_type == PLT_NEW
8212 || !htab->elf.dynamic_sections_created
8213 || h->dynindx == -1)
8215 asection *splt = htab->plt;
8216 if (!htab->elf.dynamic_sections_created
8217 || h->dynindx == -1)
8220 write_glink_stub (ent, splt, info);
8223 /* We only need one non-PIC glink stub. */
8233 Elf_Internal_Rela rela;
8236 /* This symbols needs a copy reloc. Set it up. */
8239 fprintf (stderr, ", copy");
8242 BFD_ASSERT (h->dynindx != -1);
8244 if (ppc_elf_hash_entry (h)->has_sda_refs)
8248 BFD_ASSERT (s != NULL);
8250 rela.r_offset = SYM_VAL (h);
8251 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8253 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8254 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8258 fprintf (stderr, "\n");
8261 /* Mark some specially defined symbols as absolute. */
8262 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8263 || (!htab->is_vxworks
8264 && (h == htab->elf.hgot
8265 || strcmp (h->root.root.string,
8266 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8267 sym->st_shndx = SHN_ABS;
8272 static enum elf_reloc_type_class
8273 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8275 switch (ELF32_R_TYPE (rela->r_info))
8277 case R_PPC_RELATIVE:
8278 return reloc_class_relative;
8281 case R_PPC_JMP_SLOT:
8282 return reloc_class_plt;
8284 return reloc_class_copy;
8286 return reloc_class_normal;
8290 /* Finish up the dynamic sections. */
8293 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8294 struct bfd_link_info *info)
8298 struct ppc_elf_link_hash_table *htab;
8301 bfd_boolean ret = TRUE;
8304 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8307 htab = ppc_elf_hash_table (info);
8308 dynobj = elf_hash_table (info)->dynobj;
8309 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8310 if (htab->is_vxworks)
8311 splt = bfd_get_section_by_name (dynobj, ".plt");
8316 if (htab->elf.hgot != NULL)
8317 got = SYM_VAL (htab->elf.hgot);
8319 if (htab->elf.dynamic_sections_created)
8321 Elf32_External_Dyn *dyncon, *dynconend;
8323 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
8325 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8326 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8327 for (; dyncon < dynconend; dyncon++)
8329 Elf_Internal_Dyn dyn;
8332 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8337 if (htab->is_vxworks)
8341 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8345 dyn.d_un.d_val = htab->relplt->size;
8350 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8354 dyn.d_un.d_ptr = got;
8358 if (htab->is_vxworks)
8361 dyn.d_un.d_ptr -= htab->relplt->size;
8367 if (htab->is_vxworks
8368 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8373 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8377 if (htab->got != NULL)
8379 if (htab->elf.hgot->root.u.def.section == htab->got
8380 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
8382 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
8384 p += htab->elf.hgot->root.u.def.value;
8385 if (htab->plt_type == PLT_OLD)
8387 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8388 so that a function can easily find the address of
8389 _GLOBAL_OFFSET_TABLE_. */
8390 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8391 < htab->elf.hgot->root.u.def.section->size);
8392 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8397 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8398 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8399 < htab->elf.hgot->root.u.def.section->size);
8400 bfd_put_32 (output_bfd, val, p);
8405 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8406 htab->elf.hgot->root.root.string,
8407 (htab->sgotplt != NULL
8408 ? htab->sgotplt->name : htab->got->name));
8409 bfd_set_error (bfd_error_bad_value);
8413 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8416 /* Fill in the first entry in the VxWorks procedure linkage table. */
8417 if (splt && splt->size > 0)
8419 /* Use the right PLT. */
8420 static const bfd_vma *plt_entry = NULL;
8421 plt_entry = info->shared ?
8422 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
8426 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
8428 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
8429 splt->contents + 0);
8430 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
8431 splt->contents + 4);
8435 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8436 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8438 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8439 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8440 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8441 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8442 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8443 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8447 Elf_Internal_Rela rela;
8450 loc = htab->srelplt2->contents;
8452 /* Output the @ha relocation for the first instruction. */
8453 rela.r_offset = (htab->plt->output_section->vma
8454 + htab->plt->output_offset
8456 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8458 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8459 loc += sizeof (Elf32_External_Rela);
8461 /* Output the @l relocation for the second instruction. */
8462 rela.r_offset = (htab->plt->output_section->vma
8463 + htab->plt->output_offset
8465 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8467 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8468 loc += sizeof (Elf32_External_Rela);
8470 /* Fix up the remaining relocations. They may have the wrong
8471 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8472 in which symbols were output. */
8473 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8475 Elf_Internal_Rela rel;
8477 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8478 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8479 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8480 loc += sizeof (Elf32_External_Rela);
8482 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8483 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8484 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8485 loc += sizeof (Elf32_External_Rela);
8487 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8488 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8489 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8490 loc += sizeof (Elf32_External_Rela);
8495 if (htab->glink != NULL
8496 && htab->glink->contents != NULL
8497 && htab->elf.dynamic_sections_created)
8500 unsigned char *endp;
8505 * PIC glink code is the following:
8507 * # ith PLT code stub.
8508 * addis 11,30,(plt+(i-1)*4-got)@ha
8509 * lwz 11,(plt+(i-1)*4-got)@l(11)
8513 * # A table of branches, one for each plt entry.
8514 * # The idea is that the plt call stub loads ctr and r11 with these
8515 * # addresses, so (r11 - res_0) gives the plt index * 4.
8516 * res_0: b PLTresolve
8517 * res_1: b PLTresolve
8519 * # Some number of entries towards the end can be nops
8525 * addis 11,11,(1f-res_0)@ha
8528 * 1: addi 11,11,(1b-res_0)@l
8531 * sub 11,11,12 # r11 = index * 4
8532 * addis 12,12,(got+4-1b)@ha
8533 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8534 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8537 * add 11,0,11 # r11 = index * 12 = reloc offset.
8540 static const unsigned int pic_plt_resolve[] =
8561 * Non-PIC glink code is a little simpler.
8563 * # ith PLT code stub.
8564 * lis 11,(plt+(i-1)*4)@ha
8565 * lwz 11,(plt+(i-1)*4)@l(11)
8569 * The branch table is the same, then comes
8573 * addis 11,11,(-res_0)@ha
8574 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8575 * addi 11,11,(-res_0)@l # r11 = index * 4
8578 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8579 * add 11,0,11 # r11 = index * 12 = reloc offset.
8582 static const unsigned int plt_resolve[] =
8602 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8604 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8607 /* Build the branch table, one for each plt entry (less one),
8608 and perhaps some padding. */
8609 p = htab->glink->contents;
8610 p += htab->glink_pltresolve;
8611 endp = htab->glink->contents;
8612 endp += htab->glink->size - GLINK_PLTRESOLVE;
8613 while (p < endp - 8 * 4)
8615 bfd_put_32 (output_bfd, B + endp - p, p);
8620 bfd_put_32 (output_bfd, NOP, p);
8624 res0 = (htab->glink_pltresolve
8625 + htab->glink->output_section->vma
8626 + htab->glink->output_offset);
8628 /* Last comes the PLTresolve stub. */
8633 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8635 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8638 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8640 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8641 + htab->glink->output_section->vma
8642 + htab->glink->output_offset);
8644 bfd_put_32 (output_bfd,
8645 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8646 bfd_put_32 (output_bfd,
8647 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8648 bfd_put_32 (output_bfd,
8649 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8650 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8652 bfd_put_32 (output_bfd,
8653 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8654 bfd_put_32 (output_bfd,
8655 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8659 bfd_put_32 (output_bfd,
8660 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8661 bfd_put_32 (output_bfd,
8662 LWZ_12_12 + 4, p + 9*4);
8667 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8669 bfd_put_32 (output_bfd, plt_resolve[i], p);
8672 p -= 4 * ARRAY_SIZE (plt_resolve);
8674 bfd_put_32 (output_bfd,
8675 LIS_12 + PPC_HA (got + 4), p + 0*4);
8676 bfd_put_32 (output_bfd,
8677 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8678 bfd_put_32 (output_bfd,
8679 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8680 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8682 bfd_put_32 (output_bfd,
8683 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8684 bfd_put_32 (output_bfd,
8685 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8689 bfd_put_32 (output_bfd,
8690 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8691 bfd_put_32 (output_bfd,
8692 LWZ_12_12 + 4, p + 6*4);
8700 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8701 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8702 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8703 #define TARGET_BIG_NAME "elf32-powerpc"
8704 #define ELF_ARCH bfd_arch_powerpc
8705 #define ELF_MACHINE_CODE EM_PPC
8706 #ifdef __QNXTARGET__
8707 #define ELF_MAXPAGESIZE 0x1000
8709 #define ELF_MAXPAGESIZE 0x10000
8711 #define ELF_MINPAGESIZE 0x1000
8712 #define ELF_COMMONPAGESIZE 0x1000
8713 #define elf_info_to_howto ppc_elf_info_to_howto
8715 #ifdef EM_CYGNUS_POWERPC
8716 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8720 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8723 #define elf_backend_plt_not_loaded 1
8724 #define elf_backend_can_gc_sections 1
8725 #define elf_backend_can_refcount 1
8726 #define elf_backend_rela_normal 1
8728 #define bfd_elf32_mkobject ppc_elf_mkobject
8729 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8730 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8731 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8732 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8733 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8734 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8735 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8737 #define elf_backend_object_p ppc_elf_object_p
8738 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8739 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8740 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8741 #define elf_backend_relocate_section ppc_elf_relocate_section
8742 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8743 #define elf_backend_check_relocs ppc_elf_check_relocs
8744 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8745 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8746 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8747 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8748 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8749 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8750 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8751 #define elf_backend_fake_sections ppc_elf_fake_sections
8752 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8753 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8754 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8755 #define elf_backend_write_core_note ppc_elf_write_core_note
8756 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8757 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8758 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8759 #define elf_backend_write_section ppc_elf_write_section
8760 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8761 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8762 #define elf_backend_action_discarded ppc_elf_action_discarded
8763 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8764 #define elf_backend_post_process_headers _bfd_elf_set_osabi
8766 #include "elf32-target.h"
8768 /* VxWorks Target */
8770 #undef TARGET_LITTLE_SYM
8771 #undef TARGET_LITTLE_NAME
8773 #undef TARGET_BIG_SYM
8774 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8775 #undef TARGET_BIG_NAME
8776 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8778 /* VxWorks uses the elf default section flags for .plt. */
8779 static const struct bfd_elf_special_section *
8780 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
8782 if (sec->name == NULL)
8785 if (strcmp (sec->name, ".plt") == 0)
8786 return _bfd_elf_get_sec_type_attr (abfd, sec);
8788 return ppc_elf_get_sec_type_attr (abfd, sec);
8791 /* Like ppc_elf_link_hash_table_create, but overrides
8792 appropriately for VxWorks. */
8793 static struct bfd_link_hash_table *
8794 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8796 struct bfd_link_hash_table *ret;
8798 ret = ppc_elf_link_hash_table_create (abfd);
8801 struct ppc_elf_link_hash_table *htab
8802 = (struct ppc_elf_link_hash_table *)ret;
8803 htab->is_vxworks = 1;
8804 htab->plt_type = PLT_VXWORKS;
8805 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8806 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8807 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8812 /* Tweak magic VxWorks symbols as they are loaded. */
8814 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8815 struct bfd_link_info *info,
8816 Elf_Internal_Sym *sym,
8817 const char **namep ATTRIBUTE_UNUSED,
8818 flagword *flagsp ATTRIBUTE_UNUSED,
8822 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8826 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8830 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8832 ppc_elf_final_write_processing(abfd, linker);
8833 elf_vxworks_final_write_processing(abfd, linker);
8836 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8838 #undef elf_backend_want_plt_sym
8839 #define elf_backend_want_plt_sym 1
8840 #undef elf_backend_want_got_plt
8841 #define elf_backend_want_got_plt 1
8842 #undef elf_backend_got_symbol_offset
8843 #define elf_backend_got_symbol_offset 0
8844 #undef elf_backend_plt_not_loaded
8845 #define elf_backend_plt_not_loaded 0
8846 #undef elf_backend_plt_readonly
8847 #define elf_backend_plt_readonly 1
8848 #undef elf_backend_got_header_size
8849 #define elf_backend_got_header_size 12
8851 #undef bfd_elf32_get_synthetic_symtab
8853 #undef bfd_elf32_bfd_link_hash_table_create
8854 #define bfd_elf32_bfd_link_hash_table_create \
8855 ppc_elf_vxworks_link_hash_table_create
8856 #undef elf_backend_add_symbol_hook
8857 #define elf_backend_add_symbol_hook \
8858 ppc_elf_vxworks_add_symbol_hook
8859 #undef elf_backend_link_output_symbol_hook
8860 #define elf_backend_link_output_symbol_hook \
8861 elf_vxworks_link_output_symbol_hook
8862 #undef elf_backend_final_write_processing
8863 #define elf_backend_final_write_processing \
8864 ppc_elf_vxworks_final_write_processing
8865 #undef elf_backend_get_sec_type_attr
8866 #define elf_backend_get_sec_type_attr \
8867 ppc_elf_vxworks_get_sec_type_attr
8868 #undef elf_backend_emit_relocs
8869 #define elf_backend_emit_relocs \
8870 elf_vxworks_emit_relocs
8873 #define elf32_bed ppc_elf_vxworks_bed
8874 #undef elf_backend_post_process_headers
8876 #include "elf32-target.h"
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