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 reloc for TLS. */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
761 FALSE, /* pc_relative */
763 complain_overflow_dont, /* complain_on_overflow */
764 bfd_elf_generic_reloc, /* special_function */
765 "R_PPC_TLS", /* name */
766 FALSE, /* partial_inplace */
769 FALSE), /* pcrel_offset */
771 /* Computes the load module index of the load module that contains the
772 definition of its TLS sym. */
773 HOWTO (R_PPC_DTPMOD32,
775 2, /* size (0 = byte, 1 = short, 2 = long) */
777 FALSE, /* pc_relative */
779 complain_overflow_dont, /* complain_on_overflow */
780 ppc_elf_unhandled_reloc, /* special_function */
781 "R_PPC_DTPMOD32", /* name */
782 FALSE, /* partial_inplace */
784 0xffffffff, /* dst_mask */
785 FALSE), /* pcrel_offset */
787 /* Computes a dtv-relative displacement, the difference between the value
788 of sym+add and the base address of the thread-local storage block that
789 contains the definition of sym, minus 0x8000. */
790 HOWTO (R_PPC_DTPREL32,
792 2, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE, /* pc_relative */
796 complain_overflow_dont, /* complain_on_overflow */
797 ppc_elf_unhandled_reloc, /* special_function */
798 "R_PPC_DTPREL32", /* name */
799 FALSE, /* partial_inplace */
801 0xffffffff, /* dst_mask */
802 FALSE), /* pcrel_offset */
804 /* A 16 bit dtprel reloc. */
805 HOWTO (R_PPC_DTPREL16,
807 1, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE, /* pc_relative */
811 complain_overflow_signed, /* complain_on_overflow */
812 ppc_elf_unhandled_reloc, /* special_function */
813 "R_PPC_DTPREL16", /* name */
814 FALSE, /* partial_inplace */
816 0xffff, /* dst_mask */
817 FALSE), /* pcrel_offset */
819 /* Like DTPREL16, but no overflow. */
820 HOWTO (R_PPC_DTPREL16_LO,
822 1, /* size (0 = byte, 1 = short, 2 = long) */
824 FALSE, /* pc_relative */
826 complain_overflow_dont, /* complain_on_overflow */
827 ppc_elf_unhandled_reloc, /* special_function */
828 "R_PPC_DTPREL16_LO", /* name */
829 FALSE, /* partial_inplace */
831 0xffff, /* dst_mask */
832 FALSE), /* pcrel_offset */
834 /* Like DTPREL16_LO, but next higher group of 16 bits. */
835 HOWTO (R_PPC_DTPREL16_HI,
837 1, /* size (0 = byte, 1 = short, 2 = long) */
839 FALSE, /* pc_relative */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL16_HI", /* name */
844 FALSE, /* partial_inplace */
846 0xffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
849 /* Like DTPREL16_HI, but adjust for low 16 bits. */
850 HOWTO (R_PPC_DTPREL16_HA,
852 1, /* size (0 = byte, 1 = short, 2 = long) */
854 FALSE, /* pc_relative */
856 complain_overflow_dont, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16_HA", /* name */
859 FALSE, /* partial_inplace */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
864 /* Computes a tp-relative displacement, the difference between the value of
865 sym+add and the value of the thread pointer (r13). */
866 HOWTO (R_PPC_TPREL32,
868 2, /* size (0 = byte, 1 = short, 2 = long) */
870 FALSE, /* pc_relative */
872 complain_overflow_dont, /* complain_on_overflow */
873 ppc_elf_unhandled_reloc, /* special_function */
874 "R_PPC_TPREL32", /* name */
875 FALSE, /* partial_inplace */
877 0xffffffff, /* dst_mask */
878 FALSE), /* pcrel_offset */
880 /* A 16 bit tprel reloc. */
881 HOWTO (R_PPC_TPREL16,
883 1, /* size (0 = byte, 1 = short, 2 = long) */
885 FALSE, /* pc_relative */
887 complain_overflow_signed, /* complain_on_overflow */
888 ppc_elf_unhandled_reloc, /* special_function */
889 "R_PPC_TPREL16", /* name */
890 FALSE, /* partial_inplace */
892 0xffff, /* dst_mask */
893 FALSE), /* pcrel_offset */
895 /* Like TPREL16, but no overflow. */
896 HOWTO (R_PPC_TPREL16_LO,
898 1, /* size (0 = byte, 1 = short, 2 = long) */
900 FALSE, /* pc_relative */
902 complain_overflow_dont, /* complain_on_overflow */
903 ppc_elf_unhandled_reloc, /* special_function */
904 "R_PPC_TPREL16_LO", /* name */
905 FALSE, /* partial_inplace */
907 0xffff, /* dst_mask */
908 FALSE), /* pcrel_offset */
910 /* Like TPREL16_LO, but next higher group of 16 bits. */
911 HOWTO (R_PPC_TPREL16_HI,
913 1, /* size (0 = byte, 1 = short, 2 = long) */
915 FALSE, /* pc_relative */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL16_HI", /* name */
920 FALSE, /* partial_inplace */
922 0xffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
925 /* Like TPREL16_HI, but adjust for low 16 bits. */
926 HOWTO (R_PPC_TPREL16_HA,
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_dont, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16_HA", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
941 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
942 to the first entry. */
943 HOWTO (R_PPC_GOT_TLSGD16,
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_signed, /* complain_on_overflow */
950 ppc_elf_unhandled_reloc, /* special_function */
951 "R_PPC_GOT_TLSGD16", /* name */
952 FALSE, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* Like GOT_TLSGD16, but no overflow. */
958 HOWTO (R_PPC_GOT_TLSGD16_LO,
960 1, /* size (0 = byte, 1 = short, 2 = long) */
962 FALSE, /* pc_relative */
964 complain_overflow_dont, /* complain_on_overflow */
965 ppc_elf_unhandled_reloc, /* special_function */
966 "R_PPC_GOT_TLSGD16_LO", /* name */
967 FALSE, /* partial_inplace */
969 0xffff, /* dst_mask */
970 FALSE), /* pcrel_offset */
972 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
973 HOWTO (R_PPC_GOT_TLSGD16_HI,
975 1, /* size (0 = byte, 1 = short, 2 = long) */
977 FALSE, /* pc_relative */
979 complain_overflow_dont, /* complain_on_overflow */
980 ppc_elf_unhandled_reloc, /* special_function */
981 "R_PPC_GOT_TLSGD16_HI", /* name */
982 FALSE, /* partial_inplace */
984 0xffff, /* dst_mask */
985 FALSE), /* pcrel_offset */
987 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
988 HOWTO (R_PPC_GOT_TLSGD16_HA,
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE, /* pc_relative */
994 complain_overflow_dont, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16_HA", /* name */
997 FALSE, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1002 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1003 with values (sym+add)@dtpmod and zero, and computes the offset to the
1005 HOWTO (R_PPC_GOT_TLSLD16,
1007 1, /* size (0 = byte, 1 = short, 2 = long) */
1009 FALSE, /* pc_relative */
1011 complain_overflow_signed, /* complain_on_overflow */
1012 ppc_elf_unhandled_reloc, /* special_function */
1013 "R_PPC_GOT_TLSLD16", /* name */
1014 FALSE, /* partial_inplace */
1016 0xffff, /* dst_mask */
1017 FALSE), /* pcrel_offset */
1019 /* Like GOT_TLSLD16, but no overflow. */
1020 HOWTO (R_PPC_GOT_TLSLD16_LO,
1022 1, /* size (0 = byte, 1 = short, 2 = long) */
1024 FALSE, /* pc_relative */
1026 complain_overflow_dont, /* complain_on_overflow */
1027 ppc_elf_unhandled_reloc, /* special_function */
1028 "R_PPC_GOT_TLSLD16_LO", /* name */
1029 FALSE, /* partial_inplace */
1031 0xffff, /* dst_mask */
1032 FALSE), /* pcrel_offset */
1034 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1035 HOWTO (R_PPC_GOT_TLSLD16_HI,
1036 16, /* rightshift */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1039 FALSE, /* pc_relative */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc_elf_unhandled_reloc, /* special_function */
1043 "R_PPC_GOT_TLSLD16_HI", /* name */
1044 FALSE, /* partial_inplace */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1049 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1050 HOWTO (R_PPC_GOT_TLSLD16_HA,
1051 16, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE, /* pc_relative */
1056 complain_overflow_dont, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16_HA", /* name */
1059 FALSE, /* partial_inplace */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1064 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1065 the offset to the entry. */
1066 HOWTO (R_PPC_GOT_DTPREL16,
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1070 FALSE, /* pc_relative */
1072 complain_overflow_signed, /* complain_on_overflow */
1073 ppc_elf_unhandled_reloc, /* special_function */
1074 "R_PPC_GOT_DTPREL16", /* name */
1075 FALSE, /* partial_inplace */
1077 0xffff, /* dst_mask */
1078 FALSE), /* pcrel_offset */
1080 /* Like GOT_DTPREL16, but no overflow. */
1081 HOWTO (R_PPC_GOT_DTPREL16_LO,
1083 1, /* size (0 = byte, 1 = short, 2 = long) */
1085 FALSE, /* pc_relative */
1087 complain_overflow_dont, /* complain_on_overflow */
1088 ppc_elf_unhandled_reloc, /* special_function */
1089 "R_PPC_GOT_DTPREL16_LO", /* name */
1090 FALSE, /* partial_inplace */
1092 0xffff, /* dst_mask */
1093 FALSE), /* pcrel_offset */
1095 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1096 HOWTO (R_PPC_GOT_DTPREL16_HI,
1097 16, /* rightshift */
1098 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 FALSE, /* pc_relative */
1102 complain_overflow_dont, /* complain_on_overflow */
1103 ppc_elf_unhandled_reloc, /* special_function */
1104 "R_PPC_GOT_DTPREL16_HI", /* name */
1105 FALSE, /* partial_inplace */
1107 0xffff, /* dst_mask */
1108 FALSE), /* pcrel_offset */
1110 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1111 HOWTO (R_PPC_GOT_DTPREL16_HA,
1112 16, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE, /* pc_relative */
1117 complain_overflow_dont, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16_HA", /* name */
1120 FALSE, /* partial_inplace */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1125 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1126 offset to the entry. */
1127 HOWTO (R_PPC_GOT_TPREL16,
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1131 FALSE, /* pc_relative */
1133 complain_overflow_signed, /* complain_on_overflow */
1134 ppc_elf_unhandled_reloc, /* special_function */
1135 "R_PPC_GOT_TPREL16", /* name */
1136 FALSE, /* partial_inplace */
1138 0xffff, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1141 /* Like GOT_TPREL16, but no overflow. */
1142 HOWTO (R_PPC_GOT_TPREL16_LO,
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1146 FALSE, /* pc_relative */
1148 complain_overflow_dont, /* complain_on_overflow */
1149 ppc_elf_unhandled_reloc, /* special_function */
1150 "R_PPC_GOT_TPREL16_LO", /* name */
1151 FALSE, /* partial_inplace */
1153 0xffff, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1156 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1157 HOWTO (R_PPC_GOT_TPREL16_HI,
1158 16, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE, /* pc_relative */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc_elf_unhandled_reloc, /* special_function */
1165 "R_PPC_GOT_TPREL16_HI", /* name */
1166 FALSE, /* partial_inplace */
1168 0xffff, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1171 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1172 HOWTO (R_PPC_GOT_TPREL16_HA,
1173 16, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16_HA", /* name */
1181 FALSE, /* partial_inplace */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* The remaining relocs are from the Embedded ELF ABI, and are not
1187 in the SVR4 ELF ABI. */
1189 /* 32 bit value resulting from the addend minus the symbol. */
1190 HOWTO (R_PPC_EMB_NADDR32, /* type */
1192 2, /* size (0 = byte, 1 = short, 2 = long) */
1194 FALSE, /* pc_relative */
1196 complain_overflow_bitfield, /* complain_on_overflow */
1197 bfd_elf_generic_reloc, /* special_function */
1198 "R_PPC_EMB_NADDR32", /* name */
1199 FALSE, /* partial_inplace */
1201 0xffffffff, /* dst_mask */
1202 FALSE), /* pcrel_offset */
1204 /* 16 bit value resulting from the addend minus the symbol. */
1205 HOWTO (R_PPC_EMB_NADDR16, /* type */
1207 1, /* size (0 = byte, 1 = short, 2 = long) */
1209 FALSE, /* pc_relative */
1211 complain_overflow_bitfield, /* complain_on_overflow */
1212 bfd_elf_generic_reloc, /* special_function */
1213 "R_PPC_EMB_NADDR16", /* name */
1214 FALSE, /* partial_inplace */
1216 0xffff, /* dst_mask */
1217 FALSE), /* pcrel_offset */
1219 /* 16 bit value resulting from the addend minus the symbol. */
1220 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1224 FALSE, /* pc_relative */
1226 complain_overflow_dont,/* complain_on_overflow */
1227 bfd_elf_generic_reloc, /* special_function */
1228 "R_PPC_EMB_ADDR16_LO", /* name */
1229 FALSE, /* partial_inplace */
1231 0xffff, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1234 /* The high order 16 bits of the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1236 16, /* rightshift */
1237 1, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE, /* pc_relative */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 bfd_elf_generic_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR16_HI", /* name */
1244 FALSE, /* partial_inplace */
1246 0xffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1249 /* The high order 16 bits of the result of the addend minus the address,
1250 plus 1 if the contents of the low 16 bits, treated as a signed number,
1252 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1253 16, /* rightshift */
1254 1, /* size (0 = byte, 1 = short, 2 = long) */
1256 FALSE, /* pc_relative */
1258 complain_overflow_dont, /* complain_on_overflow */
1259 ppc_elf_addr16_ha_reloc, /* special_function */
1260 "R_PPC_EMB_NADDR16_HA", /* name */
1261 FALSE, /* partial_inplace */
1263 0xffff, /* dst_mask */
1264 FALSE), /* pcrel_offset */
1266 /* 16 bit value resulting from allocating a 4 byte word to hold an
1267 address in the .sdata section, and returning the offset from
1268 _SDA_BASE_ for that relocation. */
1269 HOWTO (R_PPC_EMB_SDAI16, /* type */
1271 1, /* size (0 = byte, 1 = short, 2 = long) */
1273 FALSE, /* pc_relative */
1275 complain_overflow_bitfield, /* complain_on_overflow */
1276 bfd_elf_generic_reloc, /* special_function */
1277 "R_PPC_EMB_SDAI16", /* name */
1278 FALSE, /* partial_inplace */
1280 0xffff, /* dst_mask */
1281 FALSE), /* pcrel_offset */
1283 /* 16 bit value resulting from allocating a 4 byte word to hold an
1284 address in the .sdata2 section, and returning the offset from
1285 _SDA2_BASE_ for that relocation. */
1286 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1288 1, /* size (0 = byte, 1 = short, 2 = long) */
1290 FALSE, /* pc_relative */
1292 complain_overflow_bitfield, /* complain_on_overflow */
1293 bfd_elf_generic_reloc, /* special_function */
1294 "R_PPC_EMB_SDA2I16", /* name */
1295 FALSE, /* partial_inplace */
1297 0xffff, /* dst_mask */
1298 FALSE), /* pcrel_offset */
1300 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1301 small data items. */
1302 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 FALSE, /* pc_relative */
1308 complain_overflow_signed, /* complain_on_overflow */
1309 bfd_elf_generic_reloc, /* special_function */
1310 "R_PPC_EMB_SDA2REL", /* name */
1311 FALSE, /* partial_inplace */
1313 0xffff, /* dst_mask */
1314 FALSE), /* pcrel_offset */
1316 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1317 signed offset from the appropriate base, and filling in the register
1318 field with the appropriate register (0, 2, or 13). */
1319 HOWTO (R_PPC_EMB_SDA21, /* type */
1321 2, /* size (0 = byte, 1 = short, 2 = long) */
1323 FALSE, /* pc_relative */
1325 complain_overflow_signed, /* complain_on_overflow */
1326 bfd_elf_generic_reloc, /* special_function */
1327 "R_PPC_EMB_SDA21", /* name */
1328 FALSE, /* partial_inplace */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1333 /* Relocation not handled: R_PPC_EMB_MRKREF */
1334 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1335 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1336 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1337 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1338 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1340 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1341 in the 16 bit signed offset from the appropriate base, and filling in the
1342 register field with the appropriate register (0, 2, or 13). */
1343 HOWTO (R_PPC_EMB_RELSDA, /* type */
1345 1, /* size (0 = byte, 1 = short, 2 = long) */
1347 TRUE, /* pc_relative */
1349 complain_overflow_signed, /* complain_on_overflow */
1350 bfd_elf_generic_reloc, /* special_function */
1351 "R_PPC_EMB_RELSDA", /* name */
1352 FALSE, /* partial_inplace */
1354 0xffff, /* dst_mask */
1355 FALSE), /* pcrel_offset */
1357 /* A 16 bit relative relocation. */
1358 HOWTO (R_PPC_REL16, /* type */
1360 1, /* size (0 = byte, 1 = short, 2 = long) */
1362 TRUE, /* pc_relative */
1364 complain_overflow_bitfield, /* complain_on_overflow */
1365 bfd_elf_generic_reloc, /* special_function */
1366 "R_PPC_REL16", /* name */
1367 FALSE, /* partial_inplace */
1369 0xffff, /* dst_mask */
1370 TRUE), /* pcrel_offset */
1372 /* A 16 bit relative relocation without overflow. */
1373 HOWTO (R_PPC_REL16_LO, /* type */
1375 1, /* size (0 = byte, 1 = short, 2 = long) */
1377 TRUE, /* pc_relative */
1379 complain_overflow_dont,/* complain_on_overflow */
1380 bfd_elf_generic_reloc, /* special_function */
1381 "R_PPC_REL16_LO", /* name */
1382 FALSE, /* partial_inplace */
1384 0xffff, /* dst_mask */
1385 TRUE), /* pcrel_offset */
1387 /* The high order 16 bits of a relative address. */
1388 HOWTO (R_PPC_REL16_HI, /* type */
1389 16, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 TRUE, /* pc_relative */
1394 complain_overflow_dont, /* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 "R_PPC_REL16_HI", /* name */
1397 FALSE, /* partial_inplace */
1399 0xffff, /* dst_mask */
1400 TRUE), /* pcrel_offset */
1402 /* The high order 16 bits of a relative address, plus 1 if the contents of
1403 the low 16 bits, treated as a signed number, is negative. */
1404 HOWTO (R_PPC_REL16_HA, /* type */
1405 16, /* rightshift */
1406 1, /* size (0 = byte, 1 = short, 2 = long) */
1408 TRUE, /* pc_relative */
1410 complain_overflow_dont, /* complain_on_overflow */
1411 ppc_elf_addr16_ha_reloc, /* special_function */
1412 "R_PPC_REL16_HA", /* name */
1413 FALSE, /* partial_inplace */
1415 0xffff, /* dst_mask */
1416 TRUE), /* pcrel_offset */
1418 /* GNU extension to record C++ vtable hierarchy. */
1419 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1421 0, /* size (0 = byte, 1 = short, 2 = long) */
1423 FALSE, /* pc_relative */
1425 complain_overflow_dont, /* complain_on_overflow */
1426 NULL, /* special_function */
1427 "R_PPC_GNU_VTINHERIT", /* name */
1428 FALSE, /* partial_inplace */
1431 FALSE), /* pcrel_offset */
1433 /* GNU extension to record C++ vtable member usage. */
1434 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1436 0, /* size (0 = byte, 1 = short, 2 = long) */
1438 FALSE, /* pc_relative */
1440 complain_overflow_dont, /* complain_on_overflow */
1441 NULL, /* special_function */
1442 "R_PPC_GNU_VTENTRY", /* name */
1443 FALSE, /* partial_inplace */
1446 FALSE), /* pcrel_offset */
1448 /* Phony reloc to handle AIX style TOC entries. */
1449 HOWTO (R_PPC_TOC16, /* type */
1451 1, /* size (0 = byte, 1 = short, 2 = long) */
1453 FALSE, /* pc_relative */
1455 complain_overflow_signed, /* complain_on_overflow */
1456 bfd_elf_generic_reloc, /* special_function */
1457 "R_PPC_TOC16", /* name */
1458 FALSE, /* partial_inplace */
1460 0xffff, /* dst_mask */
1461 FALSE), /* pcrel_offset */
1464 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1467 ppc_elf_howto_init (void)
1469 unsigned int i, type;
1472 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1475 type = ppc_elf_howto_raw[i].type;
1476 if (type >= (sizeof (ppc_elf_howto_table)
1477 / sizeof (ppc_elf_howto_table[0])))
1479 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1483 static reloc_howto_type *
1484 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1485 bfd_reloc_code_real_type code)
1487 enum elf_ppc_reloc_type r;
1489 /* Initialize howto table if not already done. */
1490 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1491 ppc_elf_howto_init ();
1498 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1499 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1500 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1501 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1502 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1503 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1504 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1505 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1506 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1507 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1508 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1509 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1510 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1511 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1512 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1513 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1514 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1515 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1516 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1517 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1518 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1519 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1520 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1521 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1522 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1523 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1524 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1525 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1526 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1527 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1528 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1529 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1530 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1531 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1532 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1533 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1534 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1535 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1536 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1537 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1538 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1539 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1540 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1541 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1542 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1543 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1544 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1545 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1546 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1547 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1548 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1549 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1550 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1551 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1552 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1553 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1554 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1555 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1556 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1557 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1558 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1559 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1560 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1561 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1562 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1563 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1564 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1565 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1566 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1567 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1568 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1569 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1570 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1571 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1572 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1573 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1574 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1575 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1576 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1577 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1578 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1579 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1580 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1581 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1582 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1585 return ppc_elf_howto_table[r];
1588 static reloc_howto_type *
1589 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1595 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1597 if (ppc_elf_howto_raw[i].name != NULL
1598 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1599 return &ppc_elf_howto_raw[i];
1604 /* Set the howto pointer for a PowerPC ELF reloc. */
1607 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1609 Elf_Internal_Rela *dst)
1611 /* Initialize howto table if not already done. */
1612 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1613 ppc_elf_howto_init ();
1615 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1616 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1618 /* Just because the above assert didn't trigger doesn't mean that
1619 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1620 if (!cache_ptr->howto)
1622 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1623 abfd, ELF32_R_TYPE (dst->r_info));
1624 bfd_set_error (bfd_error_bad_value);
1626 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1630 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1632 static bfd_reloc_status_type
1633 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1634 arelent *reloc_entry,
1636 void *data ATTRIBUTE_UNUSED,
1637 asection *input_section,
1639 char **error_message ATTRIBUTE_UNUSED)
1643 if (output_bfd != NULL)
1645 reloc_entry->address += input_section->output_offset;
1646 return bfd_reloc_ok;
1649 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1650 return bfd_reloc_outofrange;
1652 if (bfd_is_com_section (symbol->section))
1655 relocation = symbol->value;
1657 relocation += symbol->section->output_section->vma;
1658 relocation += symbol->section->output_offset;
1659 relocation += reloc_entry->addend;
1660 if (reloc_entry->howto->pc_relative)
1661 relocation -= reloc_entry->address;
1663 reloc_entry->addend += (relocation & 0x8000) << 1;
1665 return bfd_reloc_continue;
1668 static bfd_reloc_status_type
1669 ppc_elf_unhandled_reloc (bfd *abfd,
1670 arelent *reloc_entry,
1673 asection *input_section,
1675 char **error_message)
1677 /* If this is a relocatable link (output_bfd test tells us), just
1678 call the generic function. Any adjustment will be done at final
1680 if (output_bfd != NULL)
1681 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1682 input_section, output_bfd, error_message);
1684 if (error_message != NULL)
1686 static char buf[60];
1687 sprintf (buf, _("generic linker can't handle %s"),
1688 reloc_entry->howto->name);
1689 *error_message = buf;
1691 return bfd_reloc_dangerous;
1694 /* Sections created by the linker. */
1696 typedef struct elf_linker_section
1698 /* Pointer to the bfd section. */
1702 /* Associated bss section name. */
1703 const char *bss_name;
1704 /* Associated symbol name. */
1705 const char *sym_name;
1706 /* Associated symbol. */
1707 struct elf_link_hash_entry *sym;
1708 } elf_linker_section_t;
1710 /* Linked list of allocated pointer entries. This hangs off of the
1711 symbol lists, and provides allows us to return different pointers,
1712 based on different addend's. */
1714 typedef struct elf_linker_section_pointers
1716 /* next allocated pointer for this symbol */
1717 struct elf_linker_section_pointers *next;
1718 /* offset of pointer from beginning of section */
1722 /* which linker section this is */
1723 elf_linker_section_t *lsect;
1724 } elf_linker_section_pointers_t;
1726 struct ppc_elf_obj_tdata
1728 struct elf_obj_tdata elf;
1730 /* A mapping from local symbols to offsets into the various linker
1731 sections added. This is index by the symbol index. */
1732 elf_linker_section_pointers_t **linker_section_pointers;
1734 /* Flags used to auto-detect plt type. */
1735 unsigned int makes_plt_call : 1;
1736 unsigned int has_rel16 : 1;
1739 #define ppc_elf_tdata(bfd) \
1740 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1742 #define elf_local_ptr_offsets(bfd) \
1743 (ppc_elf_tdata (bfd)->linker_section_pointers)
1745 #define is_ppc_elf(bfd) \
1746 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1747 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1749 /* Override the generic function because we store some extras. */
1752 ppc_elf_mkobject (bfd *abfd)
1754 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1758 /* Fix bad default arch selected for a 32 bit input bfd when the
1759 default is 64 bit. */
1762 ppc_elf_object_p (bfd *abfd)
1764 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1766 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1768 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1770 /* Relies on arch after 64 bit default being 32 bit default. */
1771 abfd->arch_info = abfd->arch_info->next;
1772 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1778 /* Function to set whether a module needs the -mrelocatable bit set. */
1781 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1783 BFD_ASSERT (!elf_flags_init (abfd)
1784 || elf_elfheader (abfd)->e_flags == flags);
1786 elf_elfheader (abfd)->e_flags = flags;
1787 elf_flags_init (abfd) = TRUE;
1791 /* Support for core dump NOTE sections. */
1794 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1799 switch (note->descsz)
1804 case 268: /* Linux/PPC. */
1806 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1809 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1818 /* Make a ".reg/999" section. */
1819 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1820 size, note->descpos + offset);
1824 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1826 switch (note->descsz)
1831 case 128: /* Linux/PPC elf_prpsinfo. */
1832 elf_tdata (abfd)->core_program
1833 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1834 elf_tdata (abfd)->core_command
1835 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1838 /* Note that for some reason, a spurious space is tacked
1839 onto the end of the args in some (at least one anyway)
1840 implementations, so strip it off if it exists. */
1843 char *command = elf_tdata (abfd)->core_command;
1844 int n = strlen (command);
1846 if (0 < n && command[n - 1] == ' ')
1847 command[n - 1] = '\0';
1854 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1866 va_start (ap, note_type);
1867 memset (data, 0, 32);
1868 strncpy (data + 32, va_arg (ap, const char *), 16);
1869 strncpy (data + 48, va_arg (ap, const char *), 80);
1871 return elfcore_write_note (abfd, buf, bufsiz,
1872 "CORE", note_type, data, sizeof (data));
1883 va_start (ap, note_type);
1884 memset (data, 0, 72);
1885 pid = va_arg (ap, long);
1886 bfd_put_32 (abfd, pid, data + 24);
1887 cursig = va_arg (ap, int);
1888 bfd_put_16 (abfd, cursig, data + 12);
1889 greg = va_arg (ap, const void *);
1890 memcpy (data + 72, greg, 192);
1891 memset (data + 264, 0, 4);
1893 return elfcore_write_note (abfd, buf, bufsiz,
1894 "CORE", note_type, data, sizeof (data));
1899 /* Return address for Ith PLT stub in section PLT, for relocation REL
1900 or (bfd_vma) -1 if it should not be included. */
1903 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1904 const asection *plt ATTRIBUTE_UNUSED,
1907 return rel->address;
1910 /* Handle a PowerPC specific section when reading an object file. This
1911 is called when bfd_section_from_shdr finds a section with an unknown
1915 ppc_elf_section_from_shdr (bfd *abfd,
1916 Elf_Internal_Shdr *hdr,
1923 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1926 newsect = hdr->bfd_section;
1927 flags = bfd_get_section_flags (abfd, newsect);
1928 if (hdr->sh_flags & SHF_EXCLUDE)
1929 flags |= SEC_EXCLUDE;
1931 if (hdr->sh_type == SHT_ORDERED)
1932 flags |= SEC_SORT_ENTRIES;
1934 bfd_set_section_flags (abfd, newsect, flags);
1938 /* Set up any other section flags and such that may be necessary. */
1941 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1942 Elf_Internal_Shdr *shdr,
1945 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1946 shdr->sh_flags |= SHF_EXCLUDE;
1948 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1949 shdr->sh_type = SHT_ORDERED;
1954 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1955 need to bump up the number of section headers. */
1958 ppc_elf_additional_program_headers (bfd *abfd,
1959 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1964 s = bfd_get_section_by_name (abfd, ".sbss2");
1965 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1968 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1969 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1975 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1976 .PPC.EMB.sbss0 a normal section, and not a bss section so
1977 that the linker doesn't crater when trying to make more than
1980 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
1982 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1983 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1984 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
1985 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1986 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
1987 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
1988 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
1989 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
1990 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
1991 { NULL, 0, 0, 0, 0 }
1994 /* This is what we want for new plt/got. */
1995 static struct bfd_elf_special_section ppc_alt_plt =
1996 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
1998 static const struct bfd_elf_special_section *
1999 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2001 const struct bfd_elf_special_section *ssect;
2003 /* See if this is one of the special sections. */
2004 if (sec->name == NULL)
2007 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2011 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2012 ssect = &ppc_alt_plt;
2016 return _bfd_elf_get_sec_type_attr (abfd, sec);
2019 /* Very simple linked list structure for recording apuinfo values. */
2020 typedef struct apuinfo_list
2022 struct apuinfo_list *next;
2023 unsigned long value;
2027 static apuinfo_list *head;
2031 apuinfo_list_init (void)
2037 apuinfo_list_add (unsigned long value)
2039 apuinfo_list *entry = head;
2041 while (entry != NULL)
2043 if (entry->value == value)
2045 entry = entry->next;
2048 entry = bfd_malloc (sizeof (* entry));
2052 entry->value = value;
2058 apuinfo_list_length (void)
2060 apuinfo_list *entry;
2061 unsigned long count;
2063 for (entry = head, count = 0;
2065 entry = entry->next)
2071 static inline unsigned long
2072 apuinfo_list_element (unsigned long number)
2074 apuinfo_list * entry;
2078 entry = entry->next)
2081 return entry ? entry->value : 0;
2085 apuinfo_list_finish (void)
2087 apuinfo_list *entry;
2089 for (entry = head; entry;)
2091 apuinfo_list *next = entry->next;
2099 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2100 #define APUINFO_LABEL "APUinfo"
2102 /* Scan the input BFDs and create a linked list of
2103 the APUinfo values that will need to be emitted. */
2106 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2111 unsigned num_input_sections;
2112 bfd_size_type output_section_size;
2114 unsigned num_entries;
2115 unsigned long offset;
2116 unsigned long length;
2117 const char *error_message = NULL;
2119 if (link_info == NULL)
2122 /* Scan the input bfds, looking for apuinfo sections. */
2123 num_input_sections = 0;
2124 output_section_size = 0;
2126 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2128 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2131 ++ num_input_sections;
2132 output_section_size += asec->size;
2136 /* We need at least one input sections
2137 in order to make merging worthwhile. */
2138 if (num_input_sections < 1)
2141 /* Just make sure that the output section exists as well. */
2142 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2146 /* Allocate a buffer for the contents of the input sections. */
2147 buffer = bfd_malloc (output_section_size);
2152 apuinfo_list_init ();
2154 /* Read in the input sections contents. */
2155 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2157 unsigned long datum;
2160 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2164 length = asec->size;
2167 error_message = _("corrupt or empty %s section in %B");
2171 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2172 || (bfd_bread (buffer + offset, length, ibfd) != length))
2174 error_message = _("unable to read in %s section from %B");
2178 /* Process the contents of the section. */
2179 ptr = buffer + offset;
2180 error_message = _("corrupt %s section in %B");
2182 /* Verify the contents of the header. Note - we have to
2183 extract the values this way in order to allow for a
2184 host whose endian-ness is different from the target. */
2185 datum = bfd_get_32 (ibfd, ptr);
2186 if (datum != sizeof APUINFO_LABEL)
2189 datum = bfd_get_32 (ibfd, ptr + 8);
2193 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2196 /* Get the number of bytes used for apuinfo entries. */
2197 datum = bfd_get_32 (ibfd, ptr + 4);
2198 if (datum + 20 != length)
2201 /* Make sure that we do not run off the end of the section. */
2202 if (offset + length > output_section_size)
2205 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2206 for (i = 0; i < datum; i += 4)
2207 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2209 /* Update the offset. */
2213 error_message = NULL;
2215 /* Compute the size of the output section. */
2216 num_entries = apuinfo_list_length ();
2217 output_section_size = 20 + num_entries * 4;
2219 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2221 if (! bfd_set_section_size (abfd, asec, output_section_size))
2223 error_message = _("warning: unable to set size of %s section in %B");
2229 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2232 /* Prevent the output section from accumulating the input sections'
2233 contents. We have already stored this in our linked list structure. */
2236 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2237 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2239 bfd_byte *contents ATTRIBUTE_UNUSED)
2241 return (apuinfo_list_length ()
2242 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2245 /* Finally we can generate the output section. */
2248 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2253 unsigned num_entries;
2254 bfd_size_type length;
2256 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2260 if (apuinfo_list_length () == 0)
2263 length = asec->size;
2267 buffer = bfd_malloc (length);
2270 (*_bfd_error_handler)
2271 (_("failed to allocate space for new APUinfo section."));
2275 /* Create the apuinfo header. */
2276 num_entries = apuinfo_list_length ();
2277 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2278 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2279 bfd_put_32 (abfd, 0x2, buffer + 8);
2280 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2283 for (i = 0; i < num_entries; i++)
2285 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2289 if (length != asec->size)
2290 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2292 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2293 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2297 apuinfo_list_finish ();
2301 is_pic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2306 if (!bfd_get_section_contents (abfd, glink, buf, off, 16))
2309 insn = bfd_get_32 (abfd, buf);
2310 if ((insn & 0xffff0000) == LWZ_11_30
2311 && bfd_get_32 (abfd, buf + 4) == MTCTR_11
2312 && bfd_get_32 (abfd, buf + 8) == BCTR)
2315 if ((insn & 0xffff0000) == ADDIS_11_30
2316 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2317 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2318 && bfd_get_32 (abfd, buf + 12) == BCTR)
2324 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2326 bfd_vma vma = *(bfd_vma *) ptr;
2327 return ((section->flags & SEC_ALLOC) != 0
2328 && section->vma <= vma
2329 && vma < section->vma + section->size);
2333 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2334 long dynsymcount, asymbol **dynsyms,
2337 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2338 asection *plt, *relplt, *dynamic, *glink;
2339 bfd_vma glink_vma = 0;
2340 bfd_vma resolv_vma = 0;
2351 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2354 if (dynsymcount <= 0)
2357 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2361 plt = bfd_get_section_by_name (abfd, ".plt");
2365 /* Call common code to handle old-style executable PLTs. */
2366 if (elf_section_flags (plt) & SHF_EXECINSTR)
2367 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2368 dynsymcount, dynsyms, ret);
2370 /* If this object was prelinked, the prelinker stored the address
2371 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2372 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2373 if (dynamic != NULL)
2375 bfd_byte *dynbuf, *extdyn, *extdynend;
2377 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2379 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2382 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2383 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2386 extdynend = extdyn + dynamic->size;
2387 for (; extdyn < extdynend; extdyn += extdynsize)
2389 Elf_Internal_Dyn dyn;
2390 (*swap_dyn_in) (abfd, extdyn, &dyn);
2392 if (dyn.d_tag == DT_NULL)
2395 if (dyn.d_tag == DT_PPC_GOT)
2397 unsigned int g_o_t = dyn.d_un.d_val;
2398 asection *got = bfd_get_section_by_name (abfd, ".got");
2400 && bfd_get_section_contents (abfd, got, buf,
2401 g_o_t - got->vma + 4, 4))
2402 glink_vma = bfd_get_32 (abfd, buf);
2409 /* Otherwise we read the first plt entry. */
2412 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2413 glink_vma = bfd_get_32 (abfd, buf);
2419 /* The .glink section usually does not survive the final
2420 link; search for the section (usually .text) where the
2421 glink stubs now reside. */
2422 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2426 /* Determine glink PLT resolver by reading the relative branch
2427 from the first glink stub. */
2428 if (bfd_get_section_contents (abfd, glink, buf,
2429 glink_vma - glink->vma, 4))
2431 unsigned int insn = bfd_get_32 (abfd, buf);
2433 /* The first glink stub may either branch to the resolver ... */
2435 if ((insn & ~0x3fffffc) == 0)
2436 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2438 /* ... or fall through a bunch of NOPs. */
2439 else if ((insn ^ B ^ NOP) == 0)
2441 bfd_get_section_contents (abfd, glink, buf,
2442 glink_vma - glink->vma + i, 4);
2444 if (bfd_get_32 (abfd, buf) != NOP)
2446 resolv_vma = glink_vma + i;
2451 count = relplt->size / sizeof (Elf32_External_Rela);
2452 stub_vma = glink_vma - (bfd_vma) count * 16;
2453 /* If the stubs are those for -shared/-pie then we might have
2454 multiple stubs for each plt entry. If that is the case then
2455 there is no way to associate stubs with their plt entries short
2456 of figuring out the GOT pointer value used in the stub. */
2457 if (!bfd_get_section_contents (abfd, glink, buf,
2458 stub_vma - glink->vma, 4)
2459 || ((bfd_get_32 (abfd, buf) & 0xffff0000) != LIS_11
2460 && is_pic_glink_stub (abfd, glink, stub_vma - glink->vma - 16)))
2463 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2464 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2467 size = count * sizeof (asymbol);
2468 p = relplt->relocation;
2469 for (i = 0; i < count; i++, p++)
2470 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2472 size += sizeof (asymbol) + sizeof ("__glink");
2475 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2477 s = *ret = bfd_malloc (size);
2481 names = (char *) (s + count + 1 + (resolv_vma != 0));
2482 p = relplt->relocation;
2483 for (i = 0; i < count; i++, p++)
2487 *s = **p->sym_ptr_ptr;
2488 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2489 we are defining a symbol, ensure one of them is set. */
2490 if ((s->flags & BSF_LOCAL) == 0)
2491 s->flags |= BSF_GLOBAL;
2492 s->flags |= BSF_SYNTHETIC;
2494 s->value = stub_vma - glink->vma;
2497 len = strlen ((*p->sym_ptr_ptr)->name);
2498 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2500 memcpy (names, "@plt", sizeof ("@plt"));
2501 names += sizeof ("@plt");
2506 /* Add a symbol at the start of the glink branch table. */
2507 memset (s, 0, sizeof *s);
2509 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2511 s->value = glink_vma - glink->vma;
2513 memcpy (names, "__glink", sizeof ("__glink"));
2514 names += sizeof ("__glink");
2520 /* Add a symbol for the glink PLT resolver. */
2521 memset (s, 0, sizeof *s);
2523 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2525 s->value = resolv_vma - glink->vma;
2527 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2528 names += sizeof ("__glink_PLTresolve");
2536 /* The following functions are specific to the ELF linker, while
2537 functions above are used generally. They appear in this file more
2538 or less in the order in which they are called. eg.
2539 ppc_elf_check_relocs is called early in the link process,
2540 ppc_elf_finish_dynamic_sections is one of the last functions
2543 /* The PPC linker needs to keep track of the number of relocs that it
2544 decides to copy as dynamic relocs in check_relocs for each symbol.
2545 This is so that it can later discard them if they are found to be
2546 unnecessary. We store the information in a field extending the
2547 regular ELF linker hash table. */
2549 struct ppc_elf_dyn_relocs
2551 struct ppc_elf_dyn_relocs *next;
2553 /* The input section of the reloc. */
2556 /* Total number of relocs copied for the input section. */
2557 bfd_size_type count;
2559 /* Number of pc-relative relocs copied for the input section. */
2560 bfd_size_type pc_count;
2563 /* Track PLT entries needed for a given symbol. We might need more
2564 than one glink entry per symbol. */
2567 struct plt_entry *next;
2569 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2570 This field stores the offset into .got2 used to initialise the
2571 GOT pointer reg. It will always be at least 32768 (and for
2572 current gcc this is the only offset used). */
2575 /* The .got2 section. */
2578 /* PLT refcount or offset. */
2581 bfd_signed_vma refcount;
2585 /* .glink stub offset. */
2586 bfd_vma glink_offset;
2589 /* Of those relocs that might be copied as dynamic relocs, this function
2590 selects those that must be copied when linking a shared library,
2591 even when the symbol is local. */
2594 must_be_dyn_reloc (struct bfd_link_info *info,
2595 enum elf_ppc_reloc_type r_type)
2604 case R_PPC_REL14_BRTAKEN:
2605 case R_PPC_REL14_BRNTAKEN:
2611 case R_PPC_TPREL16_LO:
2612 case R_PPC_TPREL16_HI:
2613 case R_PPC_TPREL16_HA:
2614 return !info->executable;
2618 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2619 copying dynamic variables from a shared lib into an app's dynbss
2620 section, and instead use a dynamic relocation to point into the
2622 #define ELIMINATE_COPY_RELOCS 1
2624 /* PPC ELF linker hash entry. */
2626 struct ppc_elf_link_hash_entry
2628 struct elf_link_hash_entry elf;
2630 /* If this symbol is used in the linker created sections, the processor
2631 specific backend uses this field to map the field into the offset
2632 from the beginning of the section. */
2633 elf_linker_section_pointers_t *linker_section_pointer;
2635 /* Track dynamic relocs copied for this symbol. */
2636 struct ppc_elf_dyn_relocs *dyn_relocs;
2638 /* Contexts in which symbol is used in the GOT (or TOC).
2639 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2640 corresponding relocs are encountered during check_relocs.
2641 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2642 indicate the corresponding GOT entry type is not needed. */
2643 #define TLS_GD 1 /* GD reloc. */
2644 #define TLS_LD 2 /* LD reloc. */
2645 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2646 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2647 #define TLS_TLS 16 /* Any TLS reloc. */
2648 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2651 /* Nonzero if we have seen a small data relocation referring to this
2653 unsigned char has_sda_refs;
2656 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2658 /* PPC ELF linker hash table. */
2660 struct ppc_elf_link_hash_table
2662 struct elf_link_hash_table elf;
2664 /* Short-cuts to get to dynamic linker sections. */
2674 elf_linker_section_t sdata[2];
2677 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2680 /* The .got.plt section (VxWorks only)*/
2683 /* Shortcut to __tls_get_addr. */
2684 struct elf_link_hash_entry *tls_get_addr;
2686 /* The bfd that forced an old-style PLT. */
2689 /* TLS local dynamic got entry handling. */
2691 bfd_signed_vma refcount;
2695 /* Offset of PltResolve function in glink. */
2696 bfd_vma glink_pltresolve;
2698 /* Size of reserved GOT entries. */
2699 unsigned int got_header_size;
2700 /* Non-zero if allocating the header left a gap. */
2701 unsigned int got_gap;
2703 /* The type of PLT we have chosen to use. */
2704 enum ppc_elf_plt_type plt_type;
2706 /* Set if we should emit symbols for stubs. */
2707 unsigned int emit_stub_syms:1;
2709 /* True if the target system is VxWorks. */
2710 unsigned int is_vxworks:1;
2712 /* The size of PLT entries. */
2714 /* The distance between adjacent PLT slots. */
2716 /* The size of the first PLT entry. */
2717 int plt_initial_entry_size;
2719 /* Small local sym to section mapping cache. */
2720 struct sym_sec_cache sym_sec;
2723 /* Get the PPC ELF linker hash table from a link_info structure. */
2725 #define ppc_elf_hash_table(p) \
2726 ((struct ppc_elf_link_hash_table *) (p)->hash)
2728 /* Create an entry in a PPC ELF linker hash table. */
2730 static struct bfd_hash_entry *
2731 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2732 struct bfd_hash_table *table,
2735 /* Allocate the structure if it has not already been allocated by a
2739 entry = bfd_hash_allocate (table,
2740 sizeof (struct ppc_elf_link_hash_entry));
2745 /* Call the allocation method of the superclass. */
2746 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2749 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2750 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2751 ppc_elf_hash_entry (entry)->tls_mask = 0;
2757 /* Create a PPC ELF linker hash table. */
2759 static struct bfd_link_hash_table *
2760 ppc_elf_link_hash_table_create (bfd *abfd)
2762 struct ppc_elf_link_hash_table *ret;
2764 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2768 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2769 ppc_elf_link_hash_newfunc,
2770 sizeof (struct ppc_elf_link_hash_entry)))
2776 ret->elf.init_plt_refcount.refcount = 0;
2777 ret->elf.init_plt_refcount.glist = NULL;
2778 ret->elf.init_plt_offset.offset = 0;
2779 ret->elf.init_plt_offset.glist = NULL;
2781 ret->sdata[0].name = ".sdata";
2782 ret->sdata[0].sym_name = "_SDA_BASE_";
2783 ret->sdata[0].bss_name = ".sbss";
2785 ret->sdata[1].name = ".sdata2";
2786 ret->sdata[1].sym_name = "_SDA2_BASE_";
2787 ret->sdata[1].bss_name = ".sbss2";
2789 ret->plt_entry_size = 12;
2790 ret->plt_slot_size = 8;
2791 ret->plt_initial_entry_size = 72;
2793 return &ret->elf.root;
2796 /* Create .got and the related sections. */
2799 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2801 struct ppc_elf_link_hash_table *htab;
2805 if (!_bfd_elf_create_got_section (abfd, info))
2808 htab = ppc_elf_hash_table (info);
2809 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2813 if (htab->is_vxworks)
2815 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2821 /* The powerpc .got has a blrl instruction in it. Mark it
2823 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2824 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2825 if (!bfd_set_section_flags (abfd, s, flags))
2829 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2830 | SEC_LINKER_CREATED | SEC_READONLY);
2831 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2833 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2839 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2840 to output sections (just like _bfd_elf_create_dynamic_sections has
2841 to create .dynbss and .rela.bss). */
2844 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2846 struct ppc_elf_link_hash_table *htab;
2850 htab = ppc_elf_hash_table (info);
2852 if (htab->got == NULL
2853 && !ppc_elf_create_got (abfd, info))
2856 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2859 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2860 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2862 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2865 || !bfd_set_section_alignment (abfd, s, 4))
2868 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2869 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2870 SEC_ALLOC | SEC_LINKER_CREATED);
2877 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2878 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2881 || ! bfd_set_section_alignment (abfd, s, 2))
2885 if (htab->is_vxworks
2886 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2889 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2890 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2894 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2895 if (htab->plt_type == PLT_VXWORKS)
2896 /* The VxWorks PLT is a loaded section with contents. */
2897 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2898 return bfd_set_section_flags (abfd, s, flags);
2901 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2904 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2905 struct elf_link_hash_entry *dir,
2906 struct elf_link_hash_entry *ind)
2908 struct ppc_elf_link_hash_entry *edir, *eind;
2910 edir = (struct ppc_elf_link_hash_entry *) dir;
2911 eind = (struct ppc_elf_link_hash_entry *) ind;
2913 if (eind->dyn_relocs != NULL)
2915 if (edir->dyn_relocs != NULL)
2917 struct ppc_elf_dyn_relocs **pp;
2918 struct ppc_elf_dyn_relocs *p;
2920 /* Add reloc counts against the indirect sym to the direct sym
2921 list. Merge any entries against the same section. */
2922 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2924 struct ppc_elf_dyn_relocs *q;
2926 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2927 if (q->sec == p->sec)
2929 q->pc_count += p->pc_count;
2930 q->count += p->count;
2937 *pp = edir->dyn_relocs;
2940 edir->dyn_relocs = eind->dyn_relocs;
2941 eind->dyn_relocs = NULL;
2944 edir->tls_mask |= eind->tls_mask;
2945 edir->has_sda_refs |= eind->has_sda_refs;
2947 /* If called to transfer flags for a weakdef during processing
2948 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2949 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2950 if (!(ELIMINATE_COPY_RELOCS
2951 && eind->elf.root.type != bfd_link_hash_indirect
2952 && edir->elf.dynamic_adjusted))
2953 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2955 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2956 edir->elf.ref_regular |= eind->elf.ref_regular;
2957 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2958 edir->elf.needs_plt |= eind->elf.needs_plt;
2959 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
2961 /* If we were called to copy over info for a weak sym, that's all. */
2962 if (eind->elf.root.type != bfd_link_hash_indirect)
2965 /* Copy over the GOT refcount entries that we may have already seen to
2966 the symbol which just became indirect. */
2967 edir->elf.got.refcount += eind->elf.got.refcount;
2968 eind->elf.got.refcount = 0;
2970 /* And plt entries. */
2971 if (eind->elf.plt.plist != NULL)
2973 if (edir->elf.plt.plist != NULL)
2975 struct plt_entry **entp;
2976 struct plt_entry *ent;
2978 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2980 struct plt_entry *dent;
2982 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2983 if (dent->sec == ent->sec && dent->addend == ent->addend)
2985 dent->plt.refcount += ent->plt.refcount;
2992 *entp = edir->elf.plt.plist;
2995 edir->elf.plt.plist = eind->elf.plt.plist;
2996 eind->elf.plt.plist = NULL;
2999 if (eind->elf.dynindx != -1)
3001 if (edir->elf.dynindx != -1)
3002 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3003 edir->elf.dynstr_index);
3004 edir->elf.dynindx = eind->elf.dynindx;
3005 edir->elf.dynstr_index = eind->elf.dynstr_index;
3006 eind->elf.dynindx = -1;
3007 eind->elf.dynstr_index = 0;
3011 /* Hook called by the linker routine which adds symbols from an object
3012 file. We use it to put .comm items in .sbss, and not .bss. */
3015 ppc_elf_add_symbol_hook (bfd *abfd,
3016 struct bfd_link_info *info,
3017 Elf_Internal_Sym *sym,
3018 const char **namep ATTRIBUTE_UNUSED,
3019 flagword *flagsp ATTRIBUTE_UNUSED,
3023 if (sym->st_shndx == SHN_COMMON
3024 && !info->relocatable
3025 && is_ppc_elf (info->output_bfd)
3026 && sym->st_size <= elf_gp_size (abfd))
3028 /* Common symbols less than or equal to -G nn bytes are automatically
3030 struct ppc_elf_link_hash_table *htab;
3032 htab = ppc_elf_hash_table (info);
3033 if (htab->sbss == NULL)
3035 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3037 if (!htab->elf.dynobj)
3038 htab->elf.dynobj = abfd;
3040 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3043 if (htab->sbss == NULL)
3048 *valp = sym->st_size;
3055 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3056 elf_linker_section_t *lsect)
3058 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3060 if (lsect->sym == NULL)
3062 if (lsect->sym->root.type == bfd_link_hash_new)
3063 lsect->sym->non_elf = 0;
3064 lsect->sym->ref_regular = 1;
3068 /* Create a special linker section. */
3071 ppc_elf_create_linker_section (bfd *abfd,
3072 struct bfd_link_info *info,
3074 elf_linker_section_t *lsect)
3076 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3079 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3080 | SEC_LINKER_CREATED);
3082 /* Record the first bfd that needs the special sections. */
3083 if (!htab->elf.dynobj)
3084 htab->elf.dynobj = abfd;
3086 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3090 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3094 return create_sdata_sym (htab, lsect);
3097 /* Find a linker generated pointer with a given addend and type. */
3099 static elf_linker_section_pointers_t *
3100 elf_find_pointer_linker_section
3101 (elf_linker_section_pointers_t *linker_pointers,
3103 elf_linker_section_t *lsect)
3105 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3106 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3107 return linker_pointers;
3112 /* Allocate a pointer to live in a linker created section. */
3115 elf_create_pointer_linker_section (bfd *abfd,
3116 elf_linker_section_t *lsect,
3117 struct elf_link_hash_entry *h,
3118 const Elf_Internal_Rela *rel)
3120 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3121 elf_linker_section_pointers_t *linker_section_ptr;
3122 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3125 BFD_ASSERT (lsect != NULL);
3127 /* Is this a global symbol? */
3130 struct ppc_elf_link_hash_entry *eh;
3132 /* Has this symbol already been allocated? If so, our work is done. */
3133 eh = (struct ppc_elf_link_hash_entry *) h;
3134 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3139 ptr_linker_section_ptr = &eh->linker_section_pointer;
3143 BFD_ASSERT (is_ppc_elf (abfd));
3145 /* Allocation of a pointer to a local symbol. */
3146 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3148 /* Allocate a table to hold the local symbols if first time. */
3151 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3154 amt *= sizeof (elf_linker_section_pointers_t *);
3155 ptr = bfd_zalloc (abfd, amt);
3160 elf_local_ptr_offsets (abfd) = ptr;
3163 /* Has this symbol already been allocated? If so, our work is done. */
3164 if (elf_find_pointer_linker_section (ptr[r_symndx],
3169 ptr_linker_section_ptr = &ptr[r_symndx];
3172 /* Allocate space for a pointer in the linker section, and allocate
3173 a new pointer record from internal memory. */
3174 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3175 amt = sizeof (elf_linker_section_pointers_t);
3176 linker_section_ptr = bfd_alloc (abfd, amt);
3178 if (!linker_section_ptr)
3181 linker_section_ptr->next = *ptr_linker_section_ptr;
3182 linker_section_ptr->addend = rel->r_addend;
3183 linker_section_ptr->lsect = lsect;
3184 *ptr_linker_section_ptr = linker_section_ptr;
3186 linker_section_ptr->offset = lsect->section->size;
3187 lsect->section->size += 4;
3191 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3192 lsect->name, (long) linker_section_ptr->offset,
3193 (long) lsect->section->size);
3200 update_local_sym_info (bfd *abfd,
3201 Elf_Internal_Shdr *symtab_hdr,
3202 unsigned long r_symndx,
3205 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3206 char *local_got_tls_masks;
3208 if (local_got_refcounts == NULL)
3210 bfd_size_type size = symtab_hdr->sh_info;
3212 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
3213 local_got_refcounts = bfd_zalloc (abfd, size);
3214 if (local_got_refcounts == NULL)
3216 elf_local_got_refcounts (abfd) = local_got_refcounts;
3219 local_got_refcounts[r_symndx] += 1;
3220 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
3221 local_got_tls_masks[r_symndx] |= tls_type;
3226 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
3227 asection *sec, bfd_vma addend)
3229 struct plt_entry *ent;
3233 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3234 if (ent->sec == sec && ent->addend == addend)
3238 bfd_size_type amt = sizeof (*ent);
3239 ent = bfd_alloc (abfd, amt);
3242 ent->next = h->plt.plist;
3244 ent->addend = addend;
3245 ent->plt.refcount = 0;
3248 ent->plt.refcount += 1;
3252 static struct plt_entry *
3253 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
3255 struct plt_entry *ent;
3259 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3260 if (ent->sec == sec && ent->addend == addend)
3266 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3268 (*_bfd_error_handler)
3269 (_("%B: relocation %s cannot be used when making a shared object"),
3271 ppc_elf_howto_table[r_type]->name);
3272 bfd_set_error (bfd_error_bad_value);
3275 /* Look through the relocs for a section during the first phase, and
3276 allocate space in the global offset table or procedure linkage
3280 ppc_elf_check_relocs (bfd *abfd,
3281 struct bfd_link_info *info,
3283 const Elf_Internal_Rela *relocs)
3285 struct ppc_elf_link_hash_table *htab;
3286 Elf_Internal_Shdr *symtab_hdr;
3287 struct elf_link_hash_entry **sym_hashes;
3288 const Elf_Internal_Rela *rel;
3289 const Elf_Internal_Rela *rel_end;
3290 asection *got2, *sreloc;
3292 if (info->relocatable)
3295 /* Don't do anything special with non-loaded, non-alloced sections.
3296 In particular, any relocs in such sections should not affect GOT
3297 and PLT reference counting (ie. we don't allow them to create GOT
3298 or PLT entries), there's no possibility or desire to optimize TLS
3299 relocs, and there's not much point in propagating relocs to shared
3300 libs that the dynamic linker won't relocate. */
3301 if ((sec->flags & SEC_ALLOC) == 0)
3305 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3309 BFD_ASSERT (is_ppc_elf (abfd));
3311 /* Initialize howto table if not already done. */
3312 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3313 ppc_elf_howto_init ();
3315 htab = ppc_elf_hash_table (info);
3316 symtab_hdr = &elf_symtab_hdr (abfd);
3317 sym_hashes = elf_sym_hashes (abfd);
3318 got2 = bfd_get_section_by_name (abfd, ".got2");
3321 rel_end = relocs + sec->reloc_count;
3322 for (rel = relocs; rel < rel_end; rel++)
3324 unsigned long r_symndx;
3325 enum elf_ppc_reloc_type r_type;
3326 struct elf_link_hash_entry *h;
3329 r_symndx = ELF32_R_SYM (rel->r_info);
3330 if (r_symndx < symtab_hdr->sh_info)
3334 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3335 while (h->root.type == bfd_link_hash_indirect
3336 || h->root.type == bfd_link_hash_warning)
3337 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3340 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3341 This shows up in particular in an R_PPC_ADDR32 in the eabi
3344 && htab->got == NULL
3345 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3347 if (htab->elf.dynobj == NULL)
3348 htab->elf.dynobj = abfd;
3349 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3351 BFD_ASSERT (h == htab->elf.hgot);
3354 r_type = ELF32_R_TYPE (rel->r_info);
3357 case R_PPC_GOT_TLSLD16:
3358 case R_PPC_GOT_TLSLD16_LO:
3359 case R_PPC_GOT_TLSLD16_HI:
3360 case R_PPC_GOT_TLSLD16_HA:
3361 tls_type = TLS_TLS | TLS_LD;
3364 case R_PPC_GOT_TLSGD16:
3365 case R_PPC_GOT_TLSGD16_LO:
3366 case R_PPC_GOT_TLSGD16_HI:
3367 case R_PPC_GOT_TLSGD16_HA:
3368 tls_type = TLS_TLS | TLS_GD;
3371 case R_PPC_GOT_TPREL16:
3372 case R_PPC_GOT_TPREL16_LO:
3373 case R_PPC_GOT_TPREL16_HI:
3374 case R_PPC_GOT_TPREL16_HA:
3375 if (!info->executable)
3376 info->flags |= DF_STATIC_TLS;
3377 tls_type = TLS_TLS | TLS_TPREL;
3380 case R_PPC_GOT_DTPREL16:
3381 case R_PPC_GOT_DTPREL16_LO:
3382 case R_PPC_GOT_DTPREL16_HI:
3383 case R_PPC_GOT_DTPREL16_HA:
3384 tls_type = TLS_TLS | TLS_DTPREL;
3386 sec->has_tls_reloc = 1;
3389 /* GOT16 relocations */
3391 case R_PPC_GOT16_LO:
3392 case R_PPC_GOT16_HI:
3393 case R_PPC_GOT16_HA:
3394 /* This symbol requires a global offset table entry. */
3395 if (htab->got == NULL)
3397 if (htab->elf.dynobj == NULL)
3398 htab->elf.dynobj = abfd;
3399 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3404 h->got.refcount += 1;
3405 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3408 /* This is a global offset table entry for a local symbol. */
3409 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3413 /* Indirect .sdata relocation. */
3414 case R_PPC_EMB_SDAI16:
3417 bad_shared_reloc (abfd, r_type);
3420 if (htab->sdata[0].section == NULL
3421 && !ppc_elf_create_linker_section (abfd, info, 0,
3424 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3429 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3430 h->non_got_ref = TRUE;
3434 /* Indirect .sdata2 relocation. */
3435 case R_PPC_EMB_SDA2I16:
3438 bad_shared_reloc (abfd, r_type);
3441 if (htab->sdata[1].section == NULL
3442 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3445 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3450 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3451 h->non_got_ref = TRUE;
3455 case R_PPC_SDAREL16:
3458 bad_shared_reloc (abfd, r_type);
3461 if (htab->sdata[0].sym == NULL
3462 && !create_sdata_sym (htab, &htab->sdata[0]))
3466 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3467 h->non_got_ref = TRUE;
3471 case R_PPC_EMB_SDA2REL:
3474 bad_shared_reloc (abfd, r_type);
3477 if (htab->sdata[1].sym == NULL
3478 && !create_sdata_sym (htab, &htab->sdata[1]))
3482 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3483 h->non_got_ref = TRUE;
3487 case R_PPC_EMB_SDA21:
3488 case R_PPC_EMB_RELSDA:
3491 bad_shared_reloc (abfd, r_type);
3494 if (htab->sdata[0].sym == NULL
3495 && !create_sdata_sym (htab, &htab->sdata[0]))
3497 if (htab->sdata[1].sym == NULL
3498 && !create_sdata_sym (htab, &htab->sdata[1]))
3502 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3503 h->non_got_ref = TRUE;
3507 case R_PPC_EMB_NADDR32:
3508 case R_PPC_EMB_NADDR16:
3509 case R_PPC_EMB_NADDR16_LO:
3510 case R_PPC_EMB_NADDR16_HI:
3511 case R_PPC_EMB_NADDR16_HA:
3514 bad_shared_reloc (abfd, r_type);
3518 h->non_got_ref = TRUE;
3522 case R_PPC_PLTREL24:
3523 case R_PPC_PLTREL32:
3524 case R_PPC_PLT16_LO:
3525 case R_PPC_PLT16_HI:
3526 case R_PPC_PLT16_HA:
3528 fprintf (stderr, "Reloc requires a PLT entry\n");
3530 /* This symbol requires a procedure linkage table entry. We
3531 actually build the entry in finish_dynamic_symbol,
3532 because this might be a case of linking PIC code without
3533 linking in any dynamic objects, in which case we don't
3534 need to generate a procedure linkage table after all. */
3538 /* It does not make sense to have a procedure linkage
3539 table entry for a local symbol. */
3540 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3544 (long) rel->r_offset,
3545 ppc_elf_howto_table[r_type]->name);
3546 bfd_set_error (bfd_error_bad_value);
3553 if (r_type == R_PPC_PLTREL24)
3555 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3556 addend = rel->r_addend;
3559 if (!update_plt_info (abfd, h, got2, addend))
3564 /* The following relocations don't need to propagate the
3565 relocation if linking a shared object since they are
3566 section relative. */
3568 case R_PPC_SECTOFF_LO:
3569 case R_PPC_SECTOFF_HI:
3570 case R_PPC_SECTOFF_HA:
3571 case R_PPC_DTPREL16:
3572 case R_PPC_DTPREL16_LO:
3573 case R_PPC_DTPREL16_HI:
3574 case R_PPC_DTPREL16_HA:
3579 case R_PPC_REL16_LO:
3580 case R_PPC_REL16_HI:
3581 case R_PPC_REL16_HA:
3582 ppc_elf_tdata (abfd)->has_rel16 = 1;
3585 /* These are just markers. */
3587 case R_PPC_EMB_MRKREF:
3592 /* These should only appear in dynamic objects. */
3594 case R_PPC_GLOB_DAT:
3595 case R_PPC_JMP_SLOT:
3596 case R_PPC_RELATIVE:
3599 /* These aren't handled yet. We'll report an error later. */
3601 case R_PPC_EMB_RELSEC16:
3602 case R_PPC_EMB_RELST_LO:
3603 case R_PPC_EMB_RELST_HI:
3604 case R_PPC_EMB_RELST_HA:
3605 case R_PPC_EMB_BIT_FLD:
3608 /* This refers only to functions defined in the shared library. */
3609 case R_PPC_LOCAL24PC:
3610 if (h && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3612 htab->plt_type = PLT_OLD;
3613 htab->old_bfd = abfd;
3617 /* This relocation describes the C++ object vtable hierarchy.
3618 Reconstruct it for later use during GC. */
3619 case R_PPC_GNU_VTINHERIT:
3620 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3624 /* This relocation describes which C++ vtable entries are actually
3625 used. Record for later use during GC. */
3626 case R_PPC_GNU_VTENTRY:
3627 BFD_ASSERT (h != NULL);
3629 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3633 /* We shouldn't really be seeing these. */
3636 case R_PPC_TPREL16_LO:
3637 case R_PPC_TPREL16_HI:
3638 case R_PPC_TPREL16_HA:
3639 if (!info->executable)
3640 info->flags |= DF_STATIC_TLS;
3644 case R_PPC_DTPMOD32:
3645 case R_PPC_DTPREL32:
3651 && (sec->flags & SEC_CODE) != 0
3652 && (info->shared || info->pie)
3653 && htab->plt_type == PLT_UNSET)
3655 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3656 the start of a function, which assembles to a REL32
3657 reference to .got2. If we detect one of these, then
3658 force the old PLT layout because the linker cannot
3659 reliably deduce the GOT pointer value needed for
3663 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3667 htab->plt_type = PLT_OLD;
3668 htab->old_bfd = abfd;
3671 if (h == NULL || h == htab->elf.hgot)
3677 case R_PPC_ADDR16_LO:
3678 case R_PPC_ADDR16_HI:
3679 case R_PPC_ADDR16_HA:
3682 if (h != NULL && !info->shared)
3684 /* We may need a plt entry if the symbol turns out to be
3685 a function defined in a dynamic object. */
3686 if (!update_plt_info (abfd, h, NULL, 0))
3689 /* We may need a copy reloc too. */
3691 h->pointer_equality_needed = 1;
3697 case R_PPC_REL14_BRTAKEN:
3698 case R_PPC_REL14_BRNTAKEN:
3701 if (h == htab->elf.hgot)
3703 if (htab->plt_type == PLT_UNSET)
3705 htab->plt_type = PLT_OLD;
3706 htab->old_bfd = abfd;
3714 case R_PPC_ADDR14_BRTAKEN:
3715 case R_PPC_ADDR14_BRNTAKEN:
3716 if (h != NULL && !info->shared)
3718 /* We may need a plt entry if the symbol turns out to be
3719 a function defined in a dynamic object. */
3720 if (!update_plt_info (abfd, h, NULL, 0))
3726 /* If we are creating a shared library, and this is a reloc
3727 against a global symbol, or a non PC relative reloc
3728 against a local symbol, then we need to copy the reloc
3729 into the shared library. However, if we are linking with
3730 -Bsymbolic, we do not need to copy a reloc against a
3731 global symbol which is defined in an object we are
3732 including in the link (i.e., DEF_REGULAR is set). At
3733 this point we have not seen all the input files, so it is
3734 possible that DEF_REGULAR is not set now but will be set
3735 later (it is never cleared). In case of a weak definition,
3736 DEF_REGULAR may be cleared later by a strong definition in
3737 a shared library. We account for that possibility below by
3738 storing information in the dyn_relocs field of the hash
3739 table entry. A similar situation occurs when creating
3740 shared libraries and symbol visibility changes render the
3743 If on the other hand, we are creating an executable, we
3744 may need to keep relocations for symbols satisfied by a
3745 dynamic library if we manage to avoid copy relocs for the
3748 && (must_be_dyn_reloc (info, r_type)
3750 && (! info->symbolic
3751 || h->root.type == bfd_link_hash_defweak
3752 || !h->def_regular))))
3753 || (ELIMINATE_COPY_RELOCS
3756 && (h->root.type == bfd_link_hash_defweak
3757 || !h->def_regular)))
3759 struct ppc_elf_dyn_relocs *p;
3760 struct ppc_elf_dyn_relocs **head;
3764 "ppc_elf_check_relocs needs to "
3765 "create relocation for %s\n",
3766 (h && h->root.root.string
3767 ? h->root.root.string : "<unknown>"));
3771 if (htab->elf.dynobj == NULL)
3772 htab->elf.dynobj = abfd;
3774 sreloc = _bfd_elf_make_dynamic_reloc_section
3775 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3781 /* If this is a global symbol, we count the number of
3782 relocations we need for this symbol. */
3785 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3789 /* Track dynamic relocs needed for local syms too.
3790 We really need local syms available to do this
3796 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3801 vpp = &elf_section_data (s)->local_dynrel;
3802 head = (struct ppc_elf_dyn_relocs **) vpp;
3806 if (p == NULL || p->sec != sec)
3808 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3819 if (!must_be_dyn_reloc (info, r_type))
3831 /* Merge object attributes from IBFD into OBFD. Raise an error if
3832 there are conflicting attributes. */
3834 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
3836 obj_attribute *in_attr, *in_attrs;
3837 obj_attribute *out_attr, *out_attrs;
3839 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3841 /* This is the first object. Copy the attributes. */
3842 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3844 /* Use the Tag_null value to indicate the attributes have been
3846 elf_known_obj_attributes_proc (obfd)[0].i = 1;
3851 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3852 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3854 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3855 non-conflicting ones. */
3856 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3857 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3858 if (in_attr->i != out_attr->i)
3861 if (out_attr->i == 0)
3862 out_attr->i = in_attr->i;
3863 else if (in_attr->i == 0)
3865 else if (out_attr->i == 1 && in_attr->i == 2)
3867 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3868 else if (out_attr->i == 1 && in_attr->i == 3)
3870 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3872 else if (out_attr->i == 3 && in_attr->i == 1)
3874 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3876 else if (out_attr->i == 3 && in_attr->i == 2)
3878 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3880 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
3882 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3883 else if (in_attr->i > 3)
3885 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
3889 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
3893 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3894 merge non-conflicting ones. */
3895 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3896 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3897 if (in_attr->i != out_attr->i)
3899 const char *in_abi = NULL, *out_abi = NULL;
3903 case 1: in_abi = "generic"; break;
3904 case 2: in_abi = "AltiVec"; break;
3905 case 3: in_abi = "SPE"; break;
3908 switch (out_attr->i)
3910 case 1: out_abi = "generic"; break;
3911 case 2: out_abi = "AltiVec"; break;
3912 case 3: out_abi = "SPE"; break;
3916 if (out_attr->i == 0)
3917 out_attr->i = in_attr->i;
3918 else if (in_attr->i == 0)
3920 /* For now, allow generic to transition to AltiVec or SPE
3921 without a warning. If GCC marked files with their stack
3922 alignment and used don't-care markings for files which are
3923 not affected by the vector ABI, we could warn about this
3925 else if (out_attr->i == 1)
3926 out_attr->i = in_attr->i;
3927 else if (in_attr->i == 1)
3929 else if (in_abi == NULL)
3931 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
3933 else if (out_abi == NULL)
3935 (_("Warning: %B uses unknown vector ABI %d"), obfd,
3939 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3940 ibfd, obfd, in_abi, out_abi);
3943 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
3944 and merge non-conflicting ones. */
3945 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
3946 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
3947 if (in_attr->i != out_attr->i)
3950 if (out_attr->i == 0)
3951 out_attr->i = in_attr->i;
3952 else if (in_attr->i == 0)
3954 else if (out_attr->i == 1 && in_attr->i == 2)
3956 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
3957 else if (out_attr->i == 2 && in_attr->i == 1)
3959 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
3960 else if (in_attr->i > 2)
3962 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
3966 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
3970 /* Merge Tag_compatibility attributes and any common GNU ones. */
3971 _bfd_elf_merge_object_attributes (ibfd, obfd);
3976 /* Merge backend specific data from an object file to the output
3977 object file when linking. */
3980 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3986 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
3989 /* Check if we have the same endianess. */
3990 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3993 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
3996 new_flags = elf_elfheader (ibfd)->e_flags;
3997 old_flags = elf_elfheader (obfd)->e_flags;
3998 if (!elf_flags_init (obfd))
4000 /* First call, no flags set. */
4001 elf_flags_init (obfd) = TRUE;
4002 elf_elfheader (obfd)->e_flags = new_flags;
4005 /* Compatible flags are ok. */
4006 else if (new_flags == old_flags)
4009 /* Incompatible flags. */
4012 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4013 to be linked with either. */
4015 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4016 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4019 (*_bfd_error_handler)
4020 (_("%B: compiled with -mrelocatable and linked with "
4021 "modules compiled normally"), ibfd);
4023 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4024 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4027 (*_bfd_error_handler)
4028 (_("%B: compiled normally and linked with "
4029 "modules compiled with -mrelocatable"), ibfd);
4032 /* The output is -mrelocatable-lib iff both the input files are. */
4033 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4034 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4036 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4037 but each input file is either -mrelocatable or -mrelocatable-lib. */
4038 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4039 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4040 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4041 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4043 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4044 any module uses it. */
4045 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4047 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4048 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4050 /* Warn about any other mismatches. */
4051 if (new_flags != old_flags)
4054 (*_bfd_error_handler)
4055 (_("%B: uses different e_flags (0x%lx) fields "
4056 "than previous modules (0x%lx)"),
4057 ibfd, (long) new_flags, (long) old_flags);
4062 bfd_set_error (bfd_error_bad_value);
4070 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4071 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4073 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4074 struct bfd_link_info *info,
4075 enum ppc_elf_plt_type plt_style,
4078 struct ppc_elf_link_hash_table *htab;
4081 htab = ppc_elf_hash_table (info);
4083 if (htab->plt_type == PLT_UNSET)
4085 if (plt_style == PLT_OLD)
4086 htab->plt_type = PLT_OLD;
4090 enum ppc_elf_plt_type plt_type = plt_style;
4092 /* Look through the reloc flags left by ppc_elf_check_relocs.
4093 Use the old style bss plt if a file makes plt calls
4094 without using the new relocs, and if ld isn't given
4095 --secure-plt and we never see REL16 relocs. */
4096 if (plt_type == PLT_UNSET)
4098 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4099 if (is_ppc_elf (ibfd))
4101 if (ppc_elf_tdata (ibfd)->has_rel16)
4103 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4106 htab->old_bfd = ibfd;
4110 htab->plt_type = plt_type;
4113 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4114 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4116 htab->emit_stub_syms = emit_stub_syms;
4118 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4120 if (htab->plt_type == PLT_NEW)
4122 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4123 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4125 /* The new PLT is a loaded section. */
4126 if (htab->plt != NULL
4127 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4130 /* The new GOT is not executable. */
4131 if (htab->got != NULL
4132 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4137 /* Stop an unused .glink section from affecting .text alignment. */
4138 if (htab->glink != NULL
4139 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4142 return htab->plt_type == PLT_NEW;
4145 /* Return the section that should be marked against GC for a given
4149 ppc_elf_gc_mark_hook (asection *sec,
4150 struct bfd_link_info *info,
4151 Elf_Internal_Rela *rel,
4152 struct elf_link_hash_entry *h,
4153 Elf_Internal_Sym *sym)
4156 switch (ELF32_R_TYPE (rel->r_info))
4158 case R_PPC_GNU_VTINHERIT:
4159 case R_PPC_GNU_VTENTRY:
4163 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4166 /* Update the got, plt and dynamic reloc reference counts for the
4167 section being removed. */
4170 ppc_elf_gc_sweep_hook (bfd *abfd,
4171 struct bfd_link_info *info,
4173 const Elf_Internal_Rela *relocs)
4175 struct ppc_elf_link_hash_table *htab;
4176 Elf_Internal_Shdr *symtab_hdr;
4177 struct elf_link_hash_entry **sym_hashes;
4178 bfd_signed_vma *local_got_refcounts;
4179 const Elf_Internal_Rela *rel, *relend;
4182 if (info->relocatable)
4185 if ((sec->flags & SEC_ALLOC) == 0)
4188 elf_section_data (sec)->local_dynrel = NULL;
4190 htab = ppc_elf_hash_table (info);
4191 symtab_hdr = &elf_symtab_hdr (abfd);
4192 sym_hashes = elf_sym_hashes (abfd);
4193 local_got_refcounts = elf_local_got_refcounts (abfd);
4194 got2 = bfd_get_section_by_name (abfd, ".got2");
4196 relend = relocs + sec->reloc_count;
4197 for (rel = relocs; rel < relend; rel++)
4199 unsigned long r_symndx;
4200 enum elf_ppc_reloc_type r_type;
4201 struct elf_link_hash_entry *h = NULL;
4203 r_symndx = ELF32_R_SYM (rel->r_info);
4204 if (r_symndx >= symtab_hdr->sh_info)
4206 struct ppc_elf_dyn_relocs **pp, *p;
4207 struct ppc_elf_link_hash_entry *eh;
4209 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4210 while (h->root.type == bfd_link_hash_indirect
4211 || h->root.type == bfd_link_hash_warning)
4212 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4213 eh = (struct ppc_elf_link_hash_entry *) h;
4215 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4218 /* Everything must go for SEC. */
4224 r_type = ELF32_R_TYPE (rel->r_info);
4227 case R_PPC_GOT_TLSLD16:
4228 case R_PPC_GOT_TLSLD16_LO:
4229 case R_PPC_GOT_TLSLD16_HI:
4230 case R_PPC_GOT_TLSLD16_HA:
4231 case R_PPC_GOT_TLSGD16:
4232 case R_PPC_GOT_TLSGD16_LO:
4233 case R_PPC_GOT_TLSGD16_HI:
4234 case R_PPC_GOT_TLSGD16_HA:
4235 case R_PPC_GOT_TPREL16:
4236 case R_PPC_GOT_TPREL16_LO:
4237 case R_PPC_GOT_TPREL16_HI:
4238 case R_PPC_GOT_TPREL16_HA:
4239 case R_PPC_GOT_DTPREL16:
4240 case R_PPC_GOT_DTPREL16_LO:
4241 case R_PPC_GOT_DTPREL16_HI:
4242 case R_PPC_GOT_DTPREL16_HA:
4244 case R_PPC_GOT16_LO:
4245 case R_PPC_GOT16_HI:
4246 case R_PPC_GOT16_HA:
4249 if (h->got.refcount > 0)
4252 else if (local_got_refcounts != NULL)
4254 if (local_got_refcounts[r_symndx] > 0)
4255 local_got_refcounts[r_symndx]--;
4261 case R_PPC_REL14_BRTAKEN:
4262 case R_PPC_REL14_BRNTAKEN:
4264 if (h == NULL || h == htab->elf.hgot)
4271 case R_PPC_ADDR16_LO:
4272 case R_PPC_ADDR16_HI:
4273 case R_PPC_ADDR16_HA:
4275 case R_PPC_ADDR14_BRTAKEN:
4276 case R_PPC_ADDR14_BRNTAKEN:
4283 case R_PPC_PLTREL24:
4284 case R_PPC_PLTREL32:
4285 case R_PPC_PLT16_LO:
4286 case R_PPC_PLT16_HI:
4287 case R_PPC_PLT16_HA:
4290 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4291 struct plt_entry *ent = find_plt_ent (h, got2, addend);
4292 if (ent->plt.refcount > 0)
4293 ent->plt.refcount -= 1;
4304 /* Set plt output section type, htab->tls_get_addr, and call the
4305 generic ELF tls_setup function. */
4308 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4310 struct ppc_elf_link_hash_table *htab;
4312 htab = ppc_elf_hash_table (info);
4313 if (htab->plt_type == PLT_NEW
4314 && htab->plt != NULL
4315 && htab->plt->output_section != NULL)
4317 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4318 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4321 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4322 FALSE, FALSE, TRUE);
4323 return _bfd_elf_tls_setup (obfd, info);
4326 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4330 branch_reloc_hash_match (const bfd *ibfd,
4331 const Elf_Internal_Rela *rel,
4332 const struct elf_link_hash_entry *hash)
4334 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4335 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4336 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4338 if (r_symndx >= symtab_hdr->sh_info
4339 && (r_type == R_PPC_PLTREL24
4340 || r_type == R_PPC_LOCAL24PC
4341 || r_type == R_PPC_REL14
4342 || r_type == R_PPC_REL14_BRTAKEN
4343 || r_type == R_PPC_REL14_BRNTAKEN
4344 || r_type == R_PPC_REL24
4345 || r_type == R_PPC_ADDR24
4346 || r_type == R_PPC_ADDR14
4347 || r_type == R_PPC_ADDR14_BRTAKEN
4348 || r_type == R_PPC_ADDR14_BRNTAKEN))
4350 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4351 struct elf_link_hash_entry *h;
4353 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4354 while (h->root.type == bfd_link_hash_indirect
4355 || h->root.type == bfd_link_hash_warning)
4356 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4363 /* Run through all the TLS relocs looking for optimization
4367 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4368 struct bfd_link_info *info)
4372 struct ppc_elf_link_hash_table *htab;
4375 if (info->relocatable || !info->executable)
4378 htab = ppc_elf_hash_table (info);
4379 /* Make two passes through the relocs. First time check that tls
4380 relocs involved in setting up a tls_get_addr call are indeed
4381 followed by such a call. If they are not, exclude them from
4382 the optimizations done on the second pass. */
4383 for (pass = 0; pass < 2; ++pass)
4384 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4386 Elf_Internal_Sym *locsyms = NULL;
4387 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4389 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4390 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4392 Elf_Internal_Rela *relstart, *rel, *relend;
4394 /* Read the relocations. */
4395 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4397 if (relstart == NULL)
4400 relend = relstart + sec->reloc_count;
4401 for (rel = relstart; rel < relend; rel++)
4403 enum elf_ppc_reloc_type r_type;
4404 unsigned long r_symndx;
4405 struct elf_link_hash_entry *h = NULL;
4407 char tls_set, tls_clear;
4408 bfd_boolean is_local;
4409 int expecting_tls_get_addr;
4410 bfd_signed_vma *got_count;
4412 r_symndx = ELF32_R_SYM (rel->r_info);
4413 if (r_symndx >= symtab_hdr->sh_info)
4415 struct elf_link_hash_entry **sym_hashes;
4417 sym_hashes = elf_sym_hashes (ibfd);
4418 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4419 while (h->root.type == bfd_link_hash_indirect
4420 || h->root.type == bfd_link_hash_warning)
4421 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4424 expecting_tls_get_addr = 0;
4430 r_type = ELF32_R_TYPE (rel->r_info);
4433 case R_PPC_GOT_TLSLD16:
4434 case R_PPC_GOT_TLSLD16_LO:
4435 expecting_tls_get_addr = 1;
4438 case R_PPC_GOT_TLSLD16_HI:
4439 case R_PPC_GOT_TLSLD16_HA:
4440 /* These relocs should never be against a symbol
4441 defined in a shared lib. Leave them alone if
4442 that turns out to be the case. */
4451 case R_PPC_GOT_TLSGD16:
4452 case R_PPC_GOT_TLSGD16_LO:
4453 expecting_tls_get_addr = 1;
4456 case R_PPC_GOT_TLSGD16_HI:
4457 case R_PPC_GOT_TLSGD16_HA:
4463 tls_set = TLS_TLS | TLS_TPRELGD;
4467 case R_PPC_GOT_TPREL16:
4468 case R_PPC_GOT_TPREL16_LO:
4469 case R_PPC_GOT_TPREL16_HI:
4470 case R_PPC_GOT_TPREL16_HA:
4475 tls_clear = TLS_TPREL;
4487 if (!expecting_tls_get_addr)
4490 if (rel + 1 < relend
4491 && branch_reloc_hash_match (ibfd, rel + 1,
4492 htab->tls_get_addr))
4495 /* Uh oh, we didn't find the expected call. We
4496 could just mark this symbol to exclude it
4497 from tls optimization but it's safer to skip
4498 the entire section. */
4499 sec->has_tls_reloc = 0;
4505 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4506 got_count = &h->got.refcount;
4510 Elf_Internal_Sym *sym;
4511 bfd_signed_vma *lgot_refs;
4514 if (locsyms == NULL)
4516 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4517 if (locsyms == NULL)
4518 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4519 symtab_hdr->sh_info,
4520 0, NULL, NULL, NULL);
4521 if (locsyms == NULL)
4523 if (elf_section_data (sec)->relocs != relstart)
4528 sym = locsyms + r_symndx;
4529 lgot_refs = elf_local_got_refcounts (ibfd);
4530 if (lgot_refs == NULL)
4532 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4533 tls_mask = &lgot_masks[r_symndx];
4534 got_count = &lgot_refs[r_symndx];
4539 /* We managed to get rid of a got entry. */
4544 if (expecting_tls_get_addr)
4546 struct plt_entry *ent;
4548 ent = find_plt_ent (htab->tls_get_addr, NULL, 0);
4549 if (ent != NULL && ent->plt.refcount > 0)
4550 ent->plt.refcount -= 1;
4553 *tls_mask |= tls_set;
4554 *tls_mask &= ~tls_clear;
4557 if (elf_section_data (sec)->relocs != relstart)
4562 && (symtab_hdr->contents != (unsigned char *) locsyms))
4564 if (!info->keep_memory)
4567 symtab_hdr->contents = (unsigned char *) locsyms;
4573 /* Return true if we have dynamic relocs that apply to read-only sections. */
4576 readonly_dynrelocs (struct elf_link_hash_entry *h)
4578 struct ppc_elf_dyn_relocs *p;
4580 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4582 asection *s = p->sec->output_section;
4585 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4586 == (SEC_READONLY | SEC_ALLOC)))
4592 /* Adjust a symbol defined by a dynamic object and referenced by a
4593 regular object. The current definition is in some section of the
4594 dynamic object, but we're not including those sections. We have to
4595 change the definition to something the rest of the link can
4599 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4600 struct elf_link_hash_entry *h)
4602 struct ppc_elf_link_hash_table *htab;
4606 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4607 h->root.root.string);
4610 /* Make sure we know what is going on here. */
4611 htab = ppc_elf_hash_table (info);
4612 BFD_ASSERT (htab->elf.dynobj != NULL
4614 || h->u.weakdef != NULL
4617 && !h->def_regular)));
4619 /* Deal with function syms. */
4620 if (h->type == STT_FUNC
4623 /* Clear procedure linkage table information for any symbol that
4624 won't need a .plt entry. */
4625 struct plt_entry *ent;
4626 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4627 if (ent->plt.refcount > 0)
4630 || SYMBOL_CALLS_LOCAL (info, h)
4631 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4632 && h->root.type == bfd_link_hash_undefweak))
4634 /* A PLT entry is not required/allowed when:
4636 1. We are not using ld.so; because then the PLT entry
4637 can't be set up, so we can't use one. In this case,
4638 ppc_elf_adjust_dynamic_symbol won't even be called.
4640 2. GC has rendered the entry unused.
4642 3. We know for certain that a call to this symbol
4643 will go to this object, or will remain undefined. */
4644 h->plt.plist = NULL;
4649 /* After adjust_dynamic_symbol, non_got_ref set means that
4650 dyn_relocs for this symbol should be discarded.
4651 If we get here we know we are making a PLT entry for this
4652 symbol, and in an executable we'd normally resolve
4653 relocations against this symbol to the PLT entry. Allow
4654 dynamic relocs if the reference is weak, and the dynamic
4655 relocs will not cause text relocation. */
4656 if (!h->ref_regular_nonweak
4658 && !htab->is_vxworks
4659 && !ppc_elf_hash_entry (h)->has_sda_refs
4660 && !readonly_dynrelocs (h))
4666 h->plt.plist = NULL;
4668 /* If this is a weak symbol, and there is a real definition, the
4669 processor independent code will have arranged for us to see the
4670 real definition first, and we can just use the same value. */
4671 if (h->u.weakdef != NULL)
4673 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4674 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4675 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4676 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4677 if (ELIMINATE_COPY_RELOCS)
4678 h->non_got_ref = h->u.weakdef->non_got_ref;
4682 /* This is a reference to a symbol defined by a dynamic object which
4683 is not a function. */
4685 /* If we are creating a shared library, we must presume that the
4686 only references to the symbol are via the global offset table.
4687 For such cases we need not do anything here; the relocations will
4688 be handled correctly by relocate_section. */
4692 /* If there are no references to this symbol that do not use the
4693 GOT, we don't need to generate a copy reloc. */
4694 if (!h->non_got_ref)
4697 /* If we didn't find any dynamic relocs in read-only sections, then
4698 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4699 We can't do this if there are any small data relocations. This
4700 doesn't work on VxWorks, where we can not have dynamic
4701 relocations (other than copy and jump slot relocations) in an
4703 if (ELIMINATE_COPY_RELOCS
4704 && !ppc_elf_hash_entry (h)->has_sda_refs
4705 && !htab->is_vxworks
4707 && !readonly_dynrelocs (h))
4715 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4716 h->root.root.string);
4720 /* We must allocate the symbol in our .dynbss section, which will
4721 become part of the .bss section of the executable. There will be
4722 an entry for this symbol in the .dynsym section. The dynamic
4723 object will contain position independent code, so all references
4724 from the dynamic object to this symbol will go through the global
4725 offset table. The dynamic linker will use the .dynsym entry to
4726 determine the address it must put in the global offset table, so
4727 both the dynamic object and the regular object will refer to the
4728 same memory location for the variable.
4730 Of course, if the symbol is referenced using SDAREL relocs, we
4731 must instead allocate it in .sbss. */
4733 if (ppc_elf_hash_entry (h)->has_sda_refs)
4737 BFD_ASSERT (s != NULL);
4739 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4740 copy the initial value out of the dynamic object and into the
4741 runtime process image. We need to remember the offset into the
4742 .rela.bss section we are going to use. */
4743 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4747 if (ppc_elf_hash_entry (h)->has_sda_refs)
4748 srel = htab->relsbss;
4750 srel = htab->relbss;
4751 BFD_ASSERT (srel != NULL);
4752 srel->size += sizeof (Elf32_External_Rela);
4756 return _bfd_elf_adjust_dynamic_copy (h, s);
4759 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4760 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4761 specifying the addend on the plt relocation. For -fpic code, the sym
4762 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4763 xxxxxxxx.got2.plt_pic32.<callee>. */
4766 add_stub_sym (struct plt_entry *ent,
4767 struct elf_link_hash_entry *h,
4768 struct bfd_link_info *info)
4770 struct elf_link_hash_entry *sh;
4771 size_t len1, len2, len3;
4774 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4776 if (info->shared || info->pie)
4777 stub = ".plt_pic32.";
4779 stub = ".plt_call32.";
4781 len1 = strlen (h->root.root.string);
4782 len2 = strlen (stub);
4785 len3 = strlen (ent->sec->name);
4786 name = bfd_malloc (len1 + len2 + len3 + 9);
4789 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4791 memcpy (name + 8, ent->sec->name, len3);
4792 memcpy (name + 8 + len3, stub, len2);
4793 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4794 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4797 if (sh->root.type == bfd_link_hash_new)
4799 sh->root.type = bfd_link_hash_defined;
4800 sh->root.u.def.section = htab->glink;
4801 sh->root.u.def.value = ent->glink_offset;
4802 sh->ref_regular = 1;
4803 sh->def_regular = 1;
4804 sh->ref_regular_nonweak = 1;
4805 sh->forced_local = 1;
4811 /* Allocate NEED contiguous space in .got, and return the offset.
4812 Handles allocation of the got header when crossing 32k. */
4815 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4818 unsigned int max_before_header;
4820 if (htab->plt_type == PLT_VXWORKS)
4822 where = htab->got->size;
4823 htab->got->size += need;
4827 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4828 if (need <= htab->got_gap)
4830 where = max_before_header - htab->got_gap;
4831 htab->got_gap -= need;
4835 if (htab->got->size + need > max_before_header
4836 && htab->got->size <= max_before_header)
4838 htab->got_gap = max_before_header - htab->got->size;
4839 htab->got->size = max_before_header + htab->got_header_size;
4841 where = htab->got->size;
4842 htab->got->size += need;
4848 /* Allocate space in associated reloc sections for dynamic relocs. */
4851 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4853 struct bfd_link_info *info = inf;
4854 struct ppc_elf_link_hash_entry *eh;
4855 struct ppc_elf_link_hash_table *htab;
4856 struct ppc_elf_dyn_relocs *p;
4858 if (h->root.type == bfd_link_hash_indirect)
4861 if (h->root.type == bfd_link_hash_warning)
4862 /* When warning symbols are created, they **replace** the "real"
4863 entry in the hash table, thus we never get to see the real
4864 symbol in a hash traversal. So look at it now. */
4865 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4867 htab = ppc_elf_hash_table (info);
4868 if (htab->elf.dynamic_sections_created)
4870 struct plt_entry *ent;
4871 bfd_boolean doneone = FALSE;
4872 bfd_vma plt_offset = 0, glink_offset = 0;
4874 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4875 if (ent->plt.refcount > 0)
4877 /* Make sure this symbol is output as a dynamic symbol. */
4878 if (h->dynindx == -1
4879 && !h->forced_local)
4881 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4886 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4888 asection *s = htab->plt;
4890 if (htab->plt_type == PLT_NEW)
4894 plt_offset = s->size;
4897 ent->plt.offset = plt_offset;
4900 if (!doneone || info->shared || info->pie)
4902 glink_offset = s->size;
4903 s->size += GLINK_ENTRY_SIZE;
4910 h->root.u.def.section = s;
4911 h->root.u.def.value = glink_offset;
4913 ent->glink_offset = glink_offset;
4915 if (htab->emit_stub_syms
4916 && !add_stub_sym (ent, h, info))
4923 /* If this is the first .plt entry, make room
4924 for the special first entry. */
4926 s->size += htab->plt_initial_entry_size;
4928 /* The PowerPC PLT is actually composed of two
4929 parts, the first part is 2 words (for a load
4930 and a jump), and then there is a remaining
4931 word available at the end. */
4932 plt_offset = (htab->plt_initial_entry_size
4933 + (htab->plt_slot_size
4935 - htab->plt_initial_entry_size)
4936 / htab->plt_entry_size)));
4938 /* If this symbol is not defined in a regular
4939 file, and we are not generating a shared
4940 library, then set the symbol to this location
4941 in the .plt. This is required to make
4942 function pointers compare as equal between
4943 the normal executable and the shared library. */
4948 h->root.u.def.section = s;
4949 h->root.u.def.value = plt_offset;
4952 /* Make room for this entry. */
4953 s->size += htab->plt_entry_size;
4954 /* After the 8192nd entry, room for two entries
4956 if (htab->plt_type == PLT_OLD
4957 && (s->size - htab->plt_initial_entry_size)
4958 / htab->plt_entry_size
4959 > PLT_NUM_SINGLE_ENTRIES)
4960 s->size += htab->plt_entry_size;
4962 ent->plt.offset = plt_offset;
4965 /* We also need to make an entry in the .rela.plt section. */
4968 htab->relplt->size += sizeof (Elf32_External_Rela);
4970 if (htab->plt_type == PLT_VXWORKS)
4972 /* Allocate space for the unloaded relocations. */
4976 == (bfd_vma) htab->plt_initial_entry_size)
4978 htab->srelplt2->size
4979 += sizeof (Elf32_External_Rela)
4980 * VXWORKS_PLTRESOLVE_RELOCS;
4983 htab->srelplt2->size
4984 += sizeof (Elf32_External_Rela)
4985 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
4988 /* Every PLT entry has an associated GOT entry in
4990 htab->sgotplt->size += 4;
4996 ent->plt.offset = (bfd_vma) -1;
4999 ent->plt.offset = (bfd_vma) -1;
5003 h->plt.plist = NULL;
5009 h->plt.plist = NULL;
5013 eh = (struct ppc_elf_link_hash_entry *) h;
5014 if (eh->elf.got.refcount > 0)
5019 /* Make sure this symbol is output as a dynamic symbol. */
5020 if (eh->elf.dynindx == -1
5021 && !eh->elf.forced_local
5022 && htab->elf.dynamic_sections_created)
5024 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5029 if ((eh->tls_mask & TLS_TLS) != 0)
5031 if ((eh->tls_mask & TLS_LD) != 0)
5033 if (!eh->elf.def_dynamic)
5034 /* We'll just use htab->tlsld_got.offset. This should
5035 always be the case. It's a little odd if we have
5036 a local dynamic reloc against a non-local symbol. */
5037 htab->tlsld_got.refcount += 1;
5041 if ((eh->tls_mask & TLS_GD) != 0)
5043 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5045 if ((eh->tls_mask & TLS_DTPREL) != 0)
5051 eh->elf.got.offset = (bfd_vma) -1;
5054 eh->elf.got.offset = allocate_got (htab, need);
5055 dyn = htab->elf.dynamic_sections_created;
5057 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5058 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5059 || eh->elf.root.type != bfd_link_hash_undefweak))
5061 /* All the entries we allocated need relocs.
5062 Except LD only needs one. */
5063 if ((eh->tls_mask & TLS_LD) != 0
5064 && eh->elf.def_dynamic)
5066 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
5071 eh->elf.got.offset = (bfd_vma) -1;
5073 if (eh->dyn_relocs == NULL
5074 || !htab->elf.dynamic_sections_created)
5077 /* In the shared -Bsymbolic case, discard space allocated for
5078 dynamic pc-relative relocs against symbols which turn out to be
5079 defined in regular objects. For the normal shared case, discard
5080 space for relocs that have become local due to symbol visibility
5085 /* Relocs that use pc_count are those that appear on a call insn,
5086 or certain REL relocs (see must_be_dyn_reloc) that can be
5087 generated via assembly. We want calls to protected symbols to
5088 resolve directly to the function rather than going via the plt.
5089 If people want function pointer comparisons to work as expected
5090 then they should avoid writing weird assembly. */
5091 if (SYMBOL_CALLS_LOCAL (info, h))
5093 struct ppc_elf_dyn_relocs **pp;
5095 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5097 p->count -= p->pc_count;
5106 if (htab->is_vxworks)
5108 struct ppc_elf_dyn_relocs **pp;
5110 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5112 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5119 /* Discard relocs on undefined symbols that must be local. */
5120 if (eh->dyn_relocs != NULL
5121 && h->root.type == bfd_link_hash_undefined
5122 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5123 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5124 eh->dyn_relocs = NULL;
5126 /* Also discard relocs on undefined weak syms with non-default
5128 if (eh->dyn_relocs != NULL
5129 && h->root.type == bfd_link_hash_undefweak)
5131 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5132 eh->dyn_relocs = NULL;
5134 /* Make sure undefined weak symbols are output as a dynamic
5136 else if (h->dynindx == -1
5137 && !h->forced_local)
5139 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5144 else if (ELIMINATE_COPY_RELOCS)
5146 /* For the non-shared case, discard space for relocs against
5147 symbols which turn out to need copy relocs or are not
5153 /* Make sure this symbol is output as a dynamic symbol.
5154 Undefined weak syms won't yet be marked as dynamic. */
5155 if (h->dynindx == -1
5156 && !h->forced_local)
5158 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5162 /* If that succeeded, we know we'll be keeping all the
5164 if (h->dynindx != -1)
5168 eh->dyn_relocs = NULL;
5173 /* Finally, allocate space. */
5174 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5176 asection *sreloc = elf_section_data (p->sec)->sreloc;
5177 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5183 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5184 read-only sections. */
5187 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5189 if (h->root.type == bfd_link_hash_indirect)
5192 if (h->root.type == bfd_link_hash_warning)
5193 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5195 if (readonly_dynrelocs (h))
5197 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5199 /* Not an error, just cut short the traversal. */
5205 /* Set the sizes of the dynamic sections. */
5208 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5209 struct bfd_link_info *info)
5211 struct ppc_elf_link_hash_table *htab;
5217 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5220 htab = ppc_elf_hash_table (info);
5221 BFD_ASSERT (htab->elf.dynobj != NULL);
5223 if (elf_hash_table (info)->dynamic_sections_created)
5225 /* Set the contents of the .interp section to the interpreter. */
5226 if (info->executable)
5228 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5229 BFD_ASSERT (s != NULL);
5230 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5231 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5235 if (htab->plt_type == PLT_OLD)
5236 htab->got_header_size = 16;
5237 else if (htab->plt_type == PLT_NEW)
5238 htab->got_header_size = 12;
5240 /* Set up .got offsets for local syms, and space for local dynamic
5242 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5244 bfd_signed_vma *local_got;
5245 bfd_signed_vma *end_local_got;
5247 bfd_size_type locsymcount;
5248 Elf_Internal_Shdr *symtab_hdr;
5250 if (!is_ppc_elf (ibfd))
5253 for (s = ibfd->sections; s != NULL; s = s->next)
5255 struct ppc_elf_dyn_relocs *p;
5257 for (p = ((struct ppc_elf_dyn_relocs *)
5258 elf_section_data (s)->local_dynrel);
5262 if (!bfd_is_abs_section (p->sec)
5263 && bfd_is_abs_section (p->sec->output_section))
5265 /* Input section has been discarded, either because
5266 it is a copy of a linkonce section or due to
5267 linker script /DISCARD/, so we'll be discarding
5270 else if (htab->is_vxworks
5271 && strcmp (p->sec->output_section->name,
5274 /* Relocations in vxworks .tls_vars sections are
5275 handled specially by the loader. */
5277 else if (p->count != 0)
5279 elf_section_data (p->sec)->sreloc->size
5280 += p->count * sizeof (Elf32_External_Rela);
5281 if ((p->sec->output_section->flags
5282 & (SEC_READONLY | SEC_ALLOC))
5283 == (SEC_READONLY | SEC_ALLOC))
5284 info->flags |= DF_TEXTREL;
5289 local_got = elf_local_got_refcounts (ibfd);
5293 symtab_hdr = &elf_symtab_hdr (ibfd);
5294 locsymcount = symtab_hdr->sh_info;
5295 end_local_got = local_got + locsymcount;
5296 lgot_masks = (char *) end_local_got;
5297 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5300 unsigned int need = 0;
5301 if ((*lgot_masks & TLS_TLS) != 0)
5303 if ((*lgot_masks & TLS_GD) != 0)
5305 if ((*lgot_masks & TLS_LD) != 0)
5306 htab->tlsld_got.refcount += 1;
5307 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5309 if ((*lgot_masks & TLS_DTPREL) != 0)
5315 *local_got = (bfd_vma) -1;
5318 *local_got = allocate_got (htab, need);
5320 htab->relgot->size += (need
5321 * (sizeof (Elf32_External_Rela) / 4));
5325 *local_got = (bfd_vma) -1;
5328 /* Allocate space for global sym dynamic relocs. */
5329 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5331 if (htab->tlsld_got.refcount > 0)
5333 htab->tlsld_got.offset = allocate_got (htab, 8);
5335 htab->relgot->size += sizeof (Elf32_External_Rela);
5338 htab->tlsld_got.offset = (bfd_vma) -1;
5340 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5342 unsigned int g_o_t = 32768;
5344 /* If we haven't allocated the header, do so now. When we get here,
5345 for old plt/got the got size will be 0 to 32764 (not allocated),
5346 or 32780 to 65536 (header allocated). For new plt/got, the
5347 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5348 if (htab->got->size <= 32768)
5350 g_o_t = htab->got->size;
5351 if (htab->plt_type == PLT_OLD)
5353 htab->got->size += htab->got_header_size;
5356 htab->elf.hgot->root.u.def.value = g_o_t;
5359 if (htab->glink != NULL && htab->glink->size != 0)
5361 htab->glink_pltresolve = htab->glink->size;
5362 /* Space for the branch table. */
5363 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5364 /* Pad out to align the start of PLTresolve. */
5365 htab->glink->size += -htab->glink->size & 15;
5366 htab->glink->size += GLINK_PLTRESOLVE;
5368 if (htab->emit_stub_syms)
5370 struct elf_link_hash_entry *sh;
5371 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5372 TRUE, FALSE, FALSE);
5375 if (sh->root.type == bfd_link_hash_new)
5377 sh->root.type = bfd_link_hash_defined;
5378 sh->root.u.def.section = htab->glink;
5379 sh->root.u.def.value = htab->glink_pltresolve;
5380 sh->ref_regular = 1;
5381 sh->def_regular = 1;
5382 sh->ref_regular_nonweak = 1;
5383 sh->forced_local = 1;
5386 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5387 TRUE, FALSE, FALSE);
5390 if (sh->root.type == bfd_link_hash_new)
5392 sh->root.type = bfd_link_hash_defined;
5393 sh->root.u.def.section = htab->glink;
5394 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5395 sh->ref_regular = 1;
5396 sh->def_regular = 1;
5397 sh->ref_regular_nonweak = 1;
5398 sh->forced_local = 1;
5404 /* We've now determined the sizes of the various dynamic sections.
5405 Allocate memory for them. */
5407 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5409 bfd_boolean strip_section = TRUE;
5411 if ((s->flags & SEC_LINKER_CREATED) == 0)
5417 || s == htab->sgotplt
5419 || s == htab->dynbss
5420 || s == htab->dynsbss)
5422 /* We'd like to strip these sections if they aren't needed, but if
5423 we've exported dynamic symbols from them we must leave them.
5424 It's too late to tell BFD to get rid of the symbols. */
5425 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
5426 strip_section = FALSE;
5427 /* Strip this section if we don't need it; see the
5430 else if (s == htab->sdata[0].section
5431 || s == htab->sdata[1].section)
5433 /* Strip these too. */
5435 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5439 /* Remember whether there are any relocation sections. */
5442 /* We use the reloc_count field as a counter if we need
5443 to copy relocs into the output file. */
5449 /* It's not one of our sections, so don't allocate space. */
5453 if (s->size == 0 && strip_section)
5455 /* If we don't need this section, strip it from the
5456 output file. This is mostly to handle .rela.bss and
5457 .rela.plt. We must create both sections in
5458 create_dynamic_sections, because they must be created
5459 before the linker maps input sections to output
5460 sections. The linker does that before
5461 adjust_dynamic_symbol is called, and it is that
5462 function which decides whether anything needs to go
5463 into these sections. */
5464 s->flags |= SEC_EXCLUDE;
5468 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5471 /* Allocate memory for the section contents. */
5472 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5473 if (s->contents == NULL)
5477 if (htab->elf.dynamic_sections_created)
5479 /* Add some entries to the .dynamic section. We fill in the
5480 values later, in ppc_elf_finish_dynamic_sections, but we
5481 must add the entries now so that we get the correct size for
5482 the .dynamic section. The DT_DEBUG entry is filled in by the
5483 dynamic linker and used by the debugger. */
5484 #define add_dynamic_entry(TAG, VAL) \
5485 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5487 if (info->executable)
5489 if (!add_dynamic_entry (DT_DEBUG, 0))
5493 if (htab->plt != NULL && htab->plt->size != 0)
5495 if (!add_dynamic_entry (DT_PLTGOT, 0)
5496 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5497 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5498 || !add_dynamic_entry (DT_JMPREL, 0))
5502 if (htab->glink != NULL && htab->glink->size != 0)
5504 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5510 if (!add_dynamic_entry (DT_RELA, 0)
5511 || !add_dynamic_entry (DT_RELASZ, 0)
5512 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5516 /* If any dynamic relocs apply to a read-only section, then we
5517 need a DT_TEXTREL entry. */
5518 if ((info->flags & DF_TEXTREL) == 0)
5519 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5522 if ((info->flags & DF_TEXTREL) != 0)
5524 if (!add_dynamic_entry (DT_TEXTREL, 0))
5527 if (htab->is_vxworks
5528 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5531 #undef add_dynamic_entry
5536 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5539 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5541 if (h->plt.plist != NULL
5543 && (!h->pointer_equality_needed
5544 || !h->ref_regular_nonweak))
5547 return _bfd_elf_hash_symbol (h);
5550 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5552 static const int shared_stub_entry[] =
5554 0x7c0802a6, /* mflr 0 */
5555 0x429f0005, /* bcl 20, 31, .Lxxx */
5556 0x7d6802a6, /* mflr 11 */
5557 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5558 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5559 0x7c0803a6, /* mtlr 0 */
5560 0x7d6903a6, /* mtctr 11 */
5561 0x4e800420, /* bctr */
5564 static const int stub_entry[] =
5566 0x3d600000, /* lis 11,xxx@ha */
5567 0x396b0000, /* addi 11,11,xxx@l */
5568 0x7d6903a6, /* mtctr 11 */
5569 0x4e800420, /* bctr */
5573 ppc_elf_relax_section (bfd *abfd,
5575 struct bfd_link_info *link_info,
5580 struct one_fixup *next;
5586 Elf_Internal_Shdr *symtab_hdr;
5587 bfd_byte *contents = NULL;
5588 Elf_Internal_Sym *isymbuf = NULL;
5589 Elf_Internal_Rela *internal_relocs = NULL;
5590 Elf_Internal_Rela *irel, *irelend;
5591 struct one_fixup *fixups = NULL;
5592 unsigned changes = 0;
5593 struct ppc_elf_link_hash_table *htab;
5594 bfd_size_type trampoff;
5599 /* Nothing to do if there are no relocations, and no need to do
5600 anything with non-alloc sections. */
5601 if ((isec->flags & SEC_ALLOC) == 0
5602 || (isec->flags & SEC_RELOC) == 0
5603 || isec->reloc_count == 0)
5606 trampoff = (isec->size + 3) & (bfd_vma) -4;
5607 /* Space for a branch around any trampolines. */
5610 symtab_hdr = &elf_symtab_hdr (abfd);
5612 /* Get a copy of the native relocations. */
5613 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5614 link_info->keep_memory);
5615 if (internal_relocs == NULL)
5618 htab = ppc_elf_hash_table (link_info);
5619 got2 = bfd_get_section_by_name (abfd, ".got2");
5621 irelend = internal_relocs + isec->reloc_count;
5622 for (irel = internal_relocs; irel < irelend; irel++)
5624 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5625 bfd_vma symaddr, reladdr, toff, roff;
5627 struct one_fixup *f;
5628 size_t insn_offset = 0;
5629 bfd_vma max_branch_offset, val;
5632 unsigned char sym_type;
5637 case R_PPC_LOCAL24PC:
5638 case R_PPC_PLTREL24:
5639 max_branch_offset = 1 << 25;
5643 case R_PPC_REL14_BRTAKEN:
5644 case R_PPC_REL14_BRNTAKEN:
5645 max_branch_offset = 1 << 15;
5652 /* Get the value of the symbol referred to by the reloc. */
5653 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5655 /* A local symbol. */
5656 Elf_Internal_Sym *isym;
5658 /* Read this BFD's local symbols. */
5659 if (isymbuf == NULL)
5661 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5662 if (isymbuf == NULL)
5663 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5664 symtab_hdr->sh_info, 0,
5669 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5670 if (isym->st_shndx == SHN_UNDEF)
5671 continue; /* We can't do anything with undefined symbols. */
5672 else if (isym->st_shndx == SHN_ABS)
5673 tsec = bfd_abs_section_ptr;
5674 else if (isym->st_shndx == SHN_COMMON)
5675 tsec = bfd_com_section_ptr;
5677 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5679 toff = isym->st_value;
5680 sym_type = ELF_ST_TYPE (isym->st_info);
5684 /* Global symbol handling. */
5686 struct elf_link_hash_entry *h;
5688 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5689 h = elf_sym_hashes (abfd)[indx];
5691 while (h->root.type == bfd_link_hash_indirect
5692 || h->root.type == bfd_link_hash_warning)
5693 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5697 if (r_type == R_PPC_PLTREL24
5698 && htab->plt != NULL)
5700 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5704 if (htab->plt_type == PLT_NEW)
5707 toff = ent->glink_offset;
5712 toff = ent->plt.offset;
5718 else if (h->root.type == bfd_link_hash_defined
5719 || h->root.type == bfd_link_hash_defweak)
5721 tsec = h->root.u.def.section;
5722 toff = h->root.u.def.value;
5730 /* If the branch and target are in the same section, you have
5731 no hope of adding stubs. We'll error out later should the
5736 /* There probably isn't any reason to handle symbols in
5737 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5738 attribute for a code section, and we are only looking at
5739 branches. However, implement it correctly here as a
5740 reference for other target relax_section functions. */
5741 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5743 /* At this stage in linking, no SEC_MERGE symbol has been
5744 adjusted, so all references to such symbols need to be
5745 passed through _bfd_merged_section_offset. (Later, in
5746 relocate_section, all SEC_MERGE symbols *except* for
5747 section symbols have been adjusted.)
5749 gas may reduce relocations against symbols in SEC_MERGE
5750 sections to a relocation against the section symbol when
5751 the original addend was zero. When the reloc is against
5752 a section symbol we should include the addend in the
5753 offset passed to _bfd_merged_section_offset, since the
5754 location of interest is the original symbol. On the
5755 other hand, an access to "sym+addend" where "sym" is not
5756 a section symbol should not include the addend; Such an
5757 access is presumed to be an offset from "sym"; The
5758 location of interest is just "sym". */
5759 if (sym_type == STT_SECTION)
5760 toff += irel->r_addend;
5762 toff = _bfd_merged_section_offset (abfd, &tsec,
5763 elf_section_data (tsec)->sec_info,
5766 if (sym_type != STT_SECTION)
5767 toff += irel->r_addend;
5769 /* PLTREL24 addends are special. */
5770 else if (r_type != R_PPC_PLTREL24)
5771 toff += irel->r_addend;
5773 /* Attempted -shared link of non-pic code loses. */
5774 if (tsec->output_section == NULL)
5777 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5779 roff = irel->r_offset;
5780 reladdr = isec->output_section->vma + isec->output_offset + roff;
5782 /* If the branch is in range, no need to do anything. */
5783 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5786 /* Look for an existing fixup to this address. */
5787 for (f = fixups; f ; f = f->next)
5788 if (f->tsec == tsec && f->toff == toff)
5794 unsigned long stub_rtype;
5796 val = trampoff - roff;
5797 if (val >= max_branch_offset)
5798 /* Oh dear, we can't reach a trampoline. Don't try to add
5799 one. We'll report an error later. */
5802 if (link_info->shared)
5804 size = 4 * ARRAY_SIZE (shared_stub_entry);
5806 stub_rtype = R_PPC_RELAX32PC;
5810 size = 4 * ARRAY_SIZE (stub_entry);
5812 stub_rtype = R_PPC_RELAX32;
5815 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5816 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5818 if (tsec == htab->plt
5819 || tsec == htab->glink)
5820 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5822 /* Hijack the old relocation. Since we need two
5823 relocations for this use a "composite" reloc. */
5824 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5826 irel->r_offset = trampoff + insn_offset;
5827 if (r_type == R_PPC_PLTREL24)
5830 /* Record the fixup so we don't do it again this section. */
5831 f = bfd_malloc (sizeof (*f));
5835 f->trampoff = trampoff;
5843 val = f->trampoff - roff;
5844 if (val >= max_branch_offset)
5847 /* Nop out the reloc, since we're finalizing things here. */
5848 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5851 /* Get the section contents. */
5852 if (contents == NULL)
5854 /* Get cached copy if it exists. */
5855 if (elf_section_data (isec)->this_hdr.contents != NULL)
5856 contents = elf_section_data (isec)->this_hdr.contents;
5859 /* Go get them off disk. */
5860 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5865 /* Fix up the existing branch to hit the trampoline. */
5866 hit_addr = contents + roff;
5870 case R_PPC_LOCAL24PC:
5871 case R_PPC_PLTREL24:
5872 t0 = bfd_get_32 (abfd, hit_addr);
5874 t0 |= val & 0x3fffffc;
5875 bfd_put_32 (abfd, t0, hit_addr);
5879 case R_PPC_REL14_BRTAKEN:
5880 case R_PPC_REL14_BRNTAKEN:
5881 t0 = bfd_get_32 (abfd, hit_addr);
5884 bfd_put_32 (abfd, t0, hit_addr);
5889 /* Write out the trampolines. */
5899 struct one_fixup *f = fixups;
5900 fixups = fixups->next;
5905 contents = bfd_realloc_or_free (contents, trampoff);
5906 if (contents == NULL)
5909 isec->size = (isec->size + 3) & (bfd_vma) -4;
5910 /* Branch around the trampolines. */
5911 val = B + trampoff - isec->size;
5912 dest = contents + isec->size;
5913 isec->size = trampoff;
5914 bfd_put_32 (abfd, val, dest);
5917 if (link_info->shared)
5919 stub = shared_stub_entry;
5920 size = ARRAY_SIZE (shared_stub_entry);
5925 size = ARRAY_SIZE (stub_entry);
5929 while (dest < contents + trampoff)
5931 bfd_put_32 (abfd, stub[i], dest);
5937 BFD_ASSERT (i == 0);
5941 && symtab_hdr->contents != (unsigned char *) isymbuf)
5943 if (! link_info->keep_memory)
5947 /* Cache the symbols for elf_link_input_bfd. */
5948 symtab_hdr->contents = (unsigned char *) isymbuf;
5952 if (contents != NULL
5953 && elf_section_data (isec)->this_hdr.contents != contents)
5955 if (!changes && !link_info->keep_memory)
5959 /* Cache the section contents for elf_link_input_bfd. */
5960 elf_section_data (isec)->this_hdr.contents = contents;
5966 /* Append sufficient NOP relocs so we can write out relocation
5967 information for the trampolines. */
5968 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
5969 * sizeof (*new_relocs));
5974 memcpy (new_relocs, internal_relocs,
5975 isec->reloc_count * sizeof (*new_relocs));
5976 for (ix = changes; ix--;)
5978 irel = new_relocs + ix + isec->reloc_count;
5980 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5982 if (internal_relocs != elf_section_data (isec)->relocs)
5983 free (internal_relocs);
5984 elf_section_data (isec)->relocs = new_relocs;
5985 isec->reloc_count += changes;
5986 elf_section_data (isec)->rel_hdr.sh_size
5987 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
5989 else if (elf_section_data (isec)->relocs != internal_relocs)
5990 free (internal_relocs);
5992 *again = changes != 0;
5996 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5998 if (contents != NULL
5999 && elf_section_data (isec)->this_hdr.contents != contents)
6001 if (internal_relocs != NULL
6002 && elf_section_data (isec)->relocs != internal_relocs)
6003 free (internal_relocs);
6007 /* What to do when ld finds relocations against symbols defined in
6008 discarded sections. */
6011 ppc_elf_action_discarded (asection *sec)
6013 if (strcmp (".fixup", sec->name) == 0)
6016 if (strcmp (".got2", sec->name) == 0)
6019 return _bfd_elf_default_action_discarded (sec);
6022 /* Fill in the address for a pointer generated in a linker section. */
6025 elf_finish_pointer_linker_section (bfd *input_bfd,
6026 elf_linker_section_t *lsect,
6027 struct elf_link_hash_entry *h,
6029 const Elf_Internal_Rela *rel)
6031 elf_linker_section_pointers_t *linker_section_ptr;
6033 BFD_ASSERT (lsect != NULL);
6037 /* Handle global symbol. */
6038 struct ppc_elf_link_hash_entry *eh;
6040 eh = (struct ppc_elf_link_hash_entry *) h;
6041 BFD_ASSERT (eh->elf.def_regular);
6042 linker_section_ptr = eh->linker_section_pointer;
6046 /* Handle local symbol. */
6047 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6049 BFD_ASSERT (is_ppc_elf (input_bfd));
6050 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6051 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6054 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6057 BFD_ASSERT (linker_section_ptr != NULL);
6059 /* Offset will always be a multiple of four, so use the bottom bit
6060 as a "written" flag. */
6061 if ((linker_section_ptr->offset & 1) == 0)
6063 bfd_put_32 (lsect->section->owner,
6064 relocation + linker_section_ptr->addend,
6065 lsect->section->contents + linker_section_ptr->offset);
6066 linker_section_ptr->offset += 1;
6069 relocation = (lsect->section->output_offset
6070 + linker_section_ptr->offset - 1
6075 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6076 lsect->name, (long) relocation, (long) relocation);
6079 /* Subtract out the addend, because it will get added back in by the normal
6081 return relocation - linker_section_ptr->addend;
6084 /* The RELOCATE_SECTION function is called by the ELF backend linker
6085 to handle the relocations for a section.
6087 The relocs are always passed as Rela structures; if the section
6088 actually uses Rel structures, the r_addend field will always be
6091 This function is responsible for adjust the section contents as
6092 necessary, and (if using Rela relocs and generating a
6093 relocatable output file) adjusting the reloc addend as
6096 This function does not have to worry about setting the reloc
6097 address or the reloc symbol index.
6099 LOCAL_SYMS is a pointer to the swapped in local symbols.
6101 LOCAL_SECTIONS is an array giving the section in the input file
6102 corresponding to the st_shndx field of each local symbol.
6104 The global hash table entry for the global symbols can be found
6105 via elf_sym_hashes (input_bfd).
6107 When generating relocatable output, this function must handle
6108 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6109 going to be the section symbol corresponding to the output
6110 section, which means that the addend must be adjusted
6114 ppc_elf_relocate_section (bfd *output_bfd,
6115 struct bfd_link_info *info,
6117 asection *input_section,
6119 Elf_Internal_Rela *relocs,
6120 Elf_Internal_Sym *local_syms,
6121 asection **local_sections)
6123 Elf_Internal_Shdr *symtab_hdr;
6124 struct elf_link_hash_entry **sym_hashes;
6125 struct ppc_elf_link_hash_table *htab;
6126 Elf_Internal_Rela *rel;
6127 Elf_Internal_Rela *relend;
6128 Elf_Internal_Rela outrel;
6130 asection *got2, *sreloc = NULL;
6131 bfd_vma *local_got_offsets;
6132 bfd_boolean ret = TRUE;
6133 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6134 bfd_boolean is_vxworks_tls;
6137 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6138 "%ld relocations%s",
6139 input_bfd, input_section,
6140 (long) input_section->reloc_count,
6141 (info->relocatable) ? " (relocatable)" : "");
6144 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6146 /* Initialize howto table if not already done. */
6147 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6148 ppc_elf_howto_init ();
6150 htab = ppc_elf_hash_table (info);
6151 local_got_offsets = elf_local_got_offsets (input_bfd);
6152 symtab_hdr = &elf_symtab_hdr (input_bfd);
6153 sym_hashes = elf_sym_hashes (input_bfd);
6154 /* We have to handle relocations in vxworks .tls_vars sections
6155 specially, because the dynamic loader is 'weird'. */
6156 is_vxworks_tls = (htab->is_vxworks && info->shared
6157 && !strcmp (input_section->output_section->name,
6160 relend = relocs + input_section->reloc_count;
6161 for (; rel < relend; rel++)
6163 enum elf_ppc_reloc_type r_type;
6165 bfd_reloc_status_type r;
6166 Elf_Internal_Sym *sym;
6168 struct elf_link_hash_entry *h;
6169 const char *sym_name;
6170 reloc_howto_type *howto;
6171 unsigned long r_symndx;
6173 bfd_vma branch_bit, insn, from;
6174 bfd_boolean unresolved_reloc;
6176 unsigned int tls_type, tls_mask, tls_gd;
6178 r_type = ELF32_R_TYPE (rel->r_info);
6182 unresolved_reloc = FALSE;
6184 r_symndx = ELF32_R_SYM (rel->r_info);
6186 if (r_symndx < symtab_hdr->sh_info)
6188 sym = local_syms + r_symndx;
6189 sec = local_sections[r_symndx];
6190 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6192 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6196 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6197 r_symndx, symtab_hdr, sym_hashes,
6199 unresolved_reloc, warned);
6201 sym_name = h->root.root.string;
6204 if (sec != NULL && elf_discarded_section (sec))
6206 /* For relocs against symbols from removed linkonce sections,
6207 or sections discarded by a linker script, we just want the
6208 section contents zeroed. Avoid any special processing. */
6210 if (r_type < R_PPC_max)
6211 howto = ppc_elf_howto_table[r_type];
6212 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6218 if (info->relocatable)
6221 && r_type == R_PPC_PLTREL24
6222 && rel->r_addend >= 32768)
6224 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6225 addend specifies the GOT pointer offset within .got2. */
6226 rel->r_addend += got2->output_offset;
6231 /* TLS optimizations. Replace instruction sequences and relocs
6232 based on information we collected in tls_optimize. We edit
6233 RELOCS so that --emit-relocs will output something sensible
6234 for the final instruction stream. */
6237 if (IS_PPC_TLS_RELOC (r_type))
6240 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6241 else if (local_got_offsets != NULL)
6244 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
6245 tls_mask = lgot_masks[r_symndx];
6249 /* Ensure reloc mapping code below stays sane. */
6250 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6251 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6252 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6253 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6254 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6255 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6256 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6257 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6264 case R_PPC_GOT_TPREL16:
6265 case R_PPC_GOT_TPREL16_LO:
6267 && (tls_mask & TLS_TPREL) == 0)
6270 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6272 insn |= 0x3c020000; /* addis 0,2,0 */
6273 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6274 r_type = R_PPC_TPREL16_HA;
6275 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6281 && (tls_mask & TLS_TPREL) == 0)
6284 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6285 if ((insn & ((31 << 26) | (31 << 11)))
6286 == ((31 << 26) | (2 << 11)))
6287 rtra = insn & ((1 << 26) - (1 << 16));
6288 else if ((insn & ((31 << 26) | (31 << 16)))
6289 == ((31 << 26) | (2 << 16)))
6290 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6293 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6296 else if ((insn & (31 << 1)) == 23 << 1
6297 && ((insn & (31 << 6)) < 14 << 6
6298 || ((insn & (31 << 6)) >= 16 << 6
6299 && (insn & (31 << 6)) < 24 << 6)))
6300 /* load and store indexed -> dform. */
6301 insn = (32 | ((insn >> 6) & 31)) << 26;
6302 else if ((insn & (31 << 1)) == 21 << 1
6303 && (insn & (0x1a << 6)) == 0)
6304 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6305 insn = (((58 | ((insn >> 6) & 4)) << 26)
6306 | ((insn >> 6) & 1));
6307 else if ((insn & (31 << 1)) == 21 << 1
6308 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6310 insn = (58 << 26) | 2;
6314 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6315 r_type = R_PPC_TPREL16_LO;
6316 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6318 /* Was PPC_TLS which sits on insn boundary, now
6319 PPC_TPREL16_LO which is at low-order half-word. */
6320 rel->r_offset += d_offset;
6324 case R_PPC_GOT_TLSGD16_HI:
6325 case R_PPC_GOT_TLSGD16_HA:
6326 tls_gd = TLS_TPRELGD;
6327 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6331 case R_PPC_GOT_TLSLD16_HI:
6332 case R_PPC_GOT_TLSLD16_HA:
6333 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6336 if ((tls_mask & tls_gd) != 0)
6337 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6338 + R_PPC_GOT_TPREL16);
6341 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6342 rel->r_offset -= d_offset;
6343 r_type = R_PPC_NONE;
6345 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6349 case R_PPC_GOT_TLSGD16:
6350 case R_PPC_GOT_TLSGD16_LO:
6351 tls_gd = TLS_TPRELGD;
6352 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6356 case R_PPC_GOT_TLSLD16:
6357 case R_PPC_GOT_TLSLD16_LO:
6358 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6360 unsigned int insn1, insn2;
6364 offset = rel[1].r_offset;
6365 if ((tls_mask & tls_gd) != 0)
6368 insn1 = bfd_get_32 (output_bfd,
6369 contents + rel->r_offset - d_offset);
6370 insn1 &= (1 << 26) - 1;
6371 insn1 |= 32 << 26; /* lwz */
6372 insn2 = 0x7c631214; /* add 3,3,2 */
6374 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info), R_PPC_NONE);
6375 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6376 + R_PPC_GOT_TPREL16);
6377 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6382 insn1 = 0x3c620000; /* addis 3,2,0 */
6383 insn2 = 0x38630000; /* addi 3,3,0 */
6386 /* Was an LD reloc. */
6388 r_symndx < symtab_hdr->sh_info;
6390 if (local_sections[r_symndx] == sec)
6392 if (r_symndx >= symtab_hdr->sh_info)
6394 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6396 rel->r_addend -= (local_syms[r_symndx].st_value
6397 + sec->output_offset
6398 + sec->output_section->vma);
6400 r_type = R_PPC_TPREL16_HA;
6401 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6402 rel[1].r_info = ELF32_R_INFO (r_symndx,
6404 rel[1].r_offset += d_offset;
6405 rel[1].r_addend = rel->r_addend;
6407 bfd_put_32 (output_bfd, insn1,
6408 contents + rel->r_offset - d_offset);
6409 bfd_put_32 (output_bfd, insn2, contents + offset);
6412 /* We changed the symbol on an LD reloc. Start over
6413 in order to get h, sym, sec etc. right. */
6421 /* Handle other relocations that tweak non-addend part of insn. */
6428 /* Branch taken prediction relocations. */
6429 case R_PPC_ADDR14_BRTAKEN:
6430 case R_PPC_REL14_BRTAKEN:
6431 branch_bit = BRANCH_PREDICT_BIT;
6434 /* Branch not taken prediction relocations. */
6435 case R_PPC_ADDR14_BRNTAKEN:
6436 case R_PPC_REL14_BRNTAKEN:
6437 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6438 insn &= ~BRANCH_PREDICT_BIT;
6441 from = (rel->r_offset
6442 + input_section->output_offset
6443 + input_section->output_section->vma);
6445 /* Invert 'y' bit if not the default. */
6446 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6447 insn ^= BRANCH_PREDICT_BIT;
6449 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6453 addend = rel->r_addend;
6456 if (r_type < R_PPC_max)
6457 howto = ppc_elf_howto_table[r_type];
6461 (*_bfd_error_handler)
6462 (_("%B: unknown relocation type %d for symbol %s"),
6463 input_bfd, (int) r_type, sym_name);
6465 bfd_set_error (bfd_error_bad_value);
6471 case R_PPC_EMB_MRKREF:
6472 case R_PPC_GNU_VTINHERIT:
6473 case R_PPC_GNU_VTENTRY:
6476 /* GOT16 relocations. Like an ADDR16 using the symbol's
6477 address in the GOT as relocation value instead of the
6478 symbol's value itself. Also, create a GOT entry for the
6479 symbol and put the symbol value there. */
6480 case R_PPC_GOT_TLSGD16:
6481 case R_PPC_GOT_TLSGD16_LO:
6482 case R_PPC_GOT_TLSGD16_HI:
6483 case R_PPC_GOT_TLSGD16_HA:
6484 tls_type = TLS_TLS | TLS_GD;
6487 case R_PPC_GOT_TLSLD16:
6488 case R_PPC_GOT_TLSLD16_LO:
6489 case R_PPC_GOT_TLSLD16_HI:
6490 case R_PPC_GOT_TLSLD16_HA:
6491 tls_type = TLS_TLS | TLS_LD;
6494 case R_PPC_GOT_TPREL16:
6495 case R_PPC_GOT_TPREL16_LO:
6496 case R_PPC_GOT_TPREL16_HI:
6497 case R_PPC_GOT_TPREL16_HA:
6498 tls_type = TLS_TLS | TLS_TPREL;
6501 case R_PPC_GOT_DTPREL16:
6502 case R_PPC_GOT_DTPREL16_LO:
6503 case R_PPC_GOT_DTPREL16_HI:
6504 case R_PPC_GOT_DTPREL16_HA:
6505 tls_type = TLS_TLS | TLS_DTPREL;
6509 case R_PPC_GOT16_LO:
6510 case R_PPC_GOT16_HI:
6511 case R_PPC_GOT16_HA:
6514 /* Relocation is to the entry for this symbol in the global
6520 if (htab->got == NULL)
6524 if (tls_type == (TLS_TLS | TLS_LD)
6526 || !h->def_dynamic))
6527 offp = &htab->tlsld_got.offset;
6531 dyn = htab->elf.dynamic_sections_created;
6532 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6534 && SYMBOL_REFERENCES_LOCAL (info, h)))
6535 /* This is actually a static link, or it is a
6536 -Bsymbolic link and the symbol is defined
6537 locally, or the symbol was forced to be local
6538 because of a version file. */
6543 unresolved_reloc = FALSE;
6545 offp = &h->got.offset;
6549 if (local_got_offsets == NULL)
6551 offp = &local_got_offsets[r_symndx];
6554 /* The offset must always be a multiple of 4. We use the
6555 least significant bit to record whether we have already
6556 processed this entry. */
6562 unsigned int tls_m = (tls_mask
6563 & (TLS_LD | TLS_GD | TLS_DTPREL
6564 | TLS_TPREL | TLS_TPRELGD));
6566 if (offp == &htab->tlsld_got.offset)
6572 /* We might have multiple got entries for this sym.
6573 Initialize them all. */
6578 if ((tls_m & TLS_LD) != 0)
6580 tls_ty = TLS_TLS | TLS_LD;
6583 else if ((tls_m & TLS_GD) != 0)
6585 tls_ty = TLS_TLS | TLS_GD;
6588 else if ((tls_m & TLS_DTPREL) != 0)
6590 tls_ty = TLS_TLS | TLS_DTPREL;
6591 tls_m &= ~TLS_DTPREL;
6593 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6595 tls_ty = TLS_TLS | TLS_TPREL;
6599 /* Generate relocs for the dynamic linker. */
6600 if ((info->shared || indx != 0)
6601 && (offp == &htab->tlsld_got.offset
6603 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6604 || h->root.type != bfd_link_hash_undefweak))
6606 outrel.r_offset = (htab->got->output_section->vma
6607 + htab->got->output_offset
6609 outrel.r_addend = 0;
6610 if (tls_ty & (TLS_LD | TLS_GD))
6612 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
6613 if (tls_ty == (TLS_TLS | TLS_GD))
6615 loc = htab->relgot->contents;
6616 loc += (htab->relgot->reloc_count++
6617 * sizeof (Elf32_External_Rela));
6618 bfd_elf32_swap_reloca_out (output_bfd,
6620 outrel.r_offset += 4;
6622 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6625 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6626 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6627 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6628 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6630 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6632 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
6633 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
6635 outrel.r_addend += relocation;
6636 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
6637 outrel.r_addend -= htab->elf.tls_sec->vma;
6639 loc = htab->relgot->contents;
6640 loc += (htab->relgot->reloc_count++
6641 * sizeof (Elf32_External_Rela));
6642 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6645 /* Init the .got section contents if we're not
6646 emitting a reloc. */
6649 bfd_vma value = relocation;
6651 if (tls_ty == (TLS_TLS | TLS_LD))
6653 else if (tls_ty != 0)
6655 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
6656 if (tls_ty == (TLS_TLS | TLS_TPREL))
6657 value += DTP_OFFSET - TP_OFFSET;
6659 if (tls_ty == (TLS_TLS | TLS_GD))
6661 bfd_put_32 (output_bfd, value,
6662 htab->got->contents + off + 4);
6666 bfd_put_32 (output_bfd, value,
6667 htab->got->contents + off);
6671 if (tls_ty & (TLS_LD | TLS_GD))
6680 if (off >= (bfd_vma) -2)
6683 if ((tls_type & TLS_TLS) != 0)
6685 if (tls_type != (TLS_TLS | TLS_LD))
6687 if ((tls_mask & TLS_LD) != 0
6689 || !h->def_dynamic))
6691 if (tls_type != (TLS_TLS | TLS_GD))
6693 if ((tls_mask & TLS_GD) != 0)
6695 if (tls_type != (TLS_TLS | TLS_DTPREL))
6697 if ((tls_mask & TLS_DTPREL) != 0)
6704 relocation = (htab->got->output_section->vma
6705 + htab->got->output_offset
6707 - SYM_VAL (htab->elf.hgot));
6709 /* Addends on got relocations don't make much sense.
6710 x+off@got is actually x@got+off, and since the got is
6711 generated by a hash table traversal, the value in the
6712 got at entry m+n bears little relation to the entry m. */
6714 (*_bfd_error_handler)
6715 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6718 (long) rel->r_offset,
6724 /* Relocations that need no special processing. */
6725 case R_PPC_LOCAL24PC:
6726 /* It makes no sense to point a local relocation
6727 at a symbol not in this object. */
6728 if (unresolved_reloc)
6730 if (! (*info->callbacks->undefined_symbol) (info,
6731 h->root.root.string,
6741 case R_PPC_DTPREL16:
6742 case R_PPC_DTPREL16_LO:
6743 case R_PPC_DTPREL16_HI:
6744 case R_PPC_DTPREL16_HA:
6745 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6748 /* Relocations that may need to be propagated if this is a shared
6751 case R_PPC_TPREL16_LO:
6752 case R_PPC_TPREL16_HI:
6753 case R_PPC_TPREL16_HA:
6754 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6755 /* The TPREL16 relocs shouldn't really be used in shared
6756 libs as they will result in DT_TEXTREL being set, but
6757 support them anyway. */
6761 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6764 case R_PPC_DTPREL32:
6765 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6768 case R_PPC_DTPMOD32:
6774 case R_PPC_REL16_LO:
6775 case R_PPC_REL16_HI:
6776 case R_PPC_REL16_HA:
6780 if (h == NULL || h == htab->elf.hgot)
6786 case R_PPC_ADDR16_LO:
6787 case R_PPC_ADDR16_HI:
6788 case R_PPC_ADDR16_HA:
6795 case R_PPC_REL14_BRTAKEN:
6796 case R_PPC_REL14_BRNTAKEN:
6797 /* If these relocations are not to a named symbol, they can be
6798 handled right here, no need to bother the dynamic linker. */
6799 if (SYMBOL_CALLS_LOCAL (info, h)
6800 || h == htab->elf.hgot)
6806 case R_PPC_ADDR14_BRTAKEN:
6807 case R_PPC_ADDR14_BRNTAKEN:
6808 if (h != NULL && !info->shared)
6813 if ((input_section->flags & SEC_ALLOC) == 0
6819 && ((h->root.type == bfd_link_hash_undefined
6820 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6821 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6822 || (h->root.type == bfd_link_hash_undefweak
6823 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
6824 && (must_be_dyn_reloc (info, r_type)
6825 || !SYMBOL_CALLS_LOCAL (info, h)))
6826 || (ELIMINATE_COPY_RELOCS
6831 && !h->def_regular))
6836 fprintf (stderr, "ppc_elf_relocate_section needs to "
6837 "create relocation for %s\n",
6838 (h && h->root.root.string
6839 ? h->root.root.string : "<unknown>"));
6842 /* When generating a shared object, these relocations
6843 are copied into the output file to be resolved at run
6847 sreloc = _bfd_elf_get_dynamic_reloc_section
6848 (input_bfd, input_section, /*rela?*/ TRUE);
6855 _bfd_elf_section_offset (output_bfd, info, input_section,
6857 if (outrel.r_offset == (bfd_vma) -1
6858 || outrel.r_offset == (bfd_vma) -2)
6859 skip = (int) outrel.r_offset;
6860 outrel.r_offset += (input_section->output_section->vma
6861 + input_section->output_offset);
6864 memset (&outrel, 0, sizeof outrel);
6866 && (h->root.type == bfd_link_hash_undefined
6867 || h->root.type == bfd_link_hash_undefweak))
6868 || !SYMBOL_REFERENCES_LOCAL (info, h))
6870 unresolved_reloc = FALSE;
6871 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6872 outrel.r_addend = rel->r_addend;
6876 outrel.r_addend = relocation + rel->r_addend;
6878 if (r_type == R_PPC_ADDR32)
6879 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
6884 if (r_symndx == 0 || bfd_is_abs_section (sec))
6886 else if (sec == NULL || sec->owner == NULL)
6888 bfd_set_error (bfd_error_bad_value);
6895 /* We are turning this relocation into one
6896 against a section symbol. It would be
6897 proper to subtract the symbol's value,
6898 osec->vma, from the emitted reloc addend,
6899 but ld.so expects buggy relocs. */
6900 osec = sec->output_section;
6901 indx = elf_section_data (osec)->dynindx;
6904 osec = htab->elf.text_index_section;
6905 indx = elf_section_data (osec)->dynindx;
6907 BFD_ASSERT (indx != 0);
6910 printf ("indx=%ld section=%s flags=%08x name=%s\n",
6911 indx, osec->name, osec->flags,
6912 h->root.root.string);
6916 outrel.r_info = ELF32_R_INFO (indx, r_type);
6920 loc = sreloc->contents;
6921 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
6922 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6927 /* This reloc will be computed at runtime. We clear the memory
6928 so that it contains predictable value. */
6930 && ((input_section->flags & SEC_ALLOC) != 0
6931 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
6933 relocation = howto->pc_relative ? outrel.r_offset : 0;
6940 case R_PPC_RELAX32PC_PLT:
6941 case R_PPC_RELAX32_PLT:
6943 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6945 if (htab->plt_type == PLT_NEW)
6946 relocation = (htab->glink->output_section->vma
6947 + htab->glink->output_offset
6948 + ent->glink_offset);
6950 relocation = (htab->plt->output_section->vma
6951 + htab->plt->output_offset
6954 if (r_type == R_PPC_RELAX32_PLT)
6958 case R_PPC_RELAX32PC:
6959 relocation -= (input_section->output_section->vma
6960 + input_section->output_offset
6961 + rel->r_offset - 4);
6970 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6971 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6973 /* We're clearing the bits for R_PPC_ADDR16_HA
6974 and R_PPC_ADDR16_LO here. */
6978 /* t0 is HA, t1 is LO */
6979 relocation += addend;
6980 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6981 t1 |= relocation & 0xffff;
6983 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6984 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6986 /* Rewrite the reloc and convert one of the trailing nop
6987 relocs to describe this relocation. */
6988 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
6989 /* The relocs are at the bottom 2 bytes */
6990 rel[0].r_offset += 2;
6991 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
6992 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6993 rel[1].r_offset += 4;
6994 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6999 /* Indirect .sdata relocation. */
7000 case R_PPC_EMB_SDAI16:
7001 BFD_ASSERT (htab->sdata[0].section != NULL);
7003 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7004 h, relocation, rel);
7007 /* Indirect .sdata2 relocation. */
7008 case R_PPC_EMB_SDA2I16:
7009 BFD_ASSERT (htab->sdata[1].section != NULL);
7011 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7012 h, relocation, rel);
7015 /* Handle the TOC16 reloc. We want to use the offset within the .got
7016 section, not the actual VMA. This is appropriate when generating
7017 an embedded ELF object, for which the .got section acts like the
7018 AIX .toc section. */
7019 case R_PPC_TOC16: /* phony GOT16 relocations */
7020 if (sec == NULL || sec->output_section == NULL)
7022 unresolved_reloc = TRUE;
7025 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7026 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7028 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7031 case R_PPC_PLTREL24:
7032 /* Relocation is to the entry for this symbol in the
7033 procedure linkage table. */
7035 struct plt_entry *ent = find_plt_ent (h, got2, addend);
7039 || htab->plt == NULL)
7041 /* We didn't make a PLT entry for this symbol. This
7042 happens when statically linking PIC code, or when
7043 using -Bsymbolic. */
7047 unresolved_reloc = FALSE;
7048 if (htab->plt_type == PLT_NEW)
7049 relocation = (htab->glink->output_section->vma
7050 + htab->glink->output_offset
7051 + ent->glink_offset);
7053 relocation = (htab->plt->output_section->vma
7054 + htab->plt->output_offset
7059 /* Relocate against _SDA_BASE_. */
7060 case R_PPC_SDAREL16:
7064 if (sec == NULL || sec->output_section == NULL)
7066 unresolved_reloc = TRUE;
7070 name = bfd_get_section_name (abfd, sec->output_section);
7071 if (! ((CONST_STRNEQ (name, ".sdata")
7072 && (name[6] == 0 || name[6] == '.'))
7073 || (CONST_STRNEQ (name, ".sbss")
7074 && (name[5] == 0 || name[5] == '.'))))
7076 (*_bfd_error_handler)
7077 (_("%B: the target (%s) of a %s relocation is "
7078 "in the wrong output section (%s)"),
7084 addend -= SYM_VAL (htab->sdata[0].sym);
7088 /* Relocate against _SDA2_BASE_. */
7089 case R_PPC_EMB_SDA2REL:
7093 if (sec == NULL || sec->output_section == NULL)
7095 unresolved_reloc = TRUE;
7099 name = bfd_get_section_name (abfd, sec->output_section);
7100 if (! (CONST_STRNEQ (name, ".sdata2")
7101 || CONST_STRNEQ (name, ".sbss2")))
7103 (*_bfd_error_handler)
7104 (_("%B: the target (%s) of a %s relocation is "
7105 "in the wrong output section (%s)"),
7111 bfd_set_error (bfd_error_bad_value);
7115 addend -= SYM_VAL (htab->sdata[1].sym);
7119 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7120 case R_PPC_EMB_SDA21:
7121 case R_PPC_EMB_RELSDA:
7126 if (sec == NULL || sec->output_section == NULL)
7128 unresolved_reloc = TRUE;
7132 name = bfd_get_section_name (abfd, sec->output_section);
7133 if (((CONST_STRNEQ (name, ".sdata")
7134 && (name[6] == 0 || name[6] == '.'))
7135 || (CONST_STRNEQ (name, ".sbss")
7136 && (name[5] == 0 || name[5] == '.'))))
7139 addend -= SYM_VAL (htab->sdata[0].sym);
7141 else if (CONST_STRNEQ (name, ".sdata2")
7142 || CONST_STRNEQ (name, ".sbss2"))
7145 addend -= SYM_VAL (htab->sdata[1].sym);
7147 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7148 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7154 (*_bfd_error_handler)
7155 (_("%B: the target (%s) of a %s relocation is "
7156 "in the wrong output section (%s)"),
7162 bfd_set_error (bfd_error_bad_value);
7167 if (r_type == R_PPC_EMB_SDA21)
7168 { /* fill in register field */
7169 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7170 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7171 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7176 /* Relocate against the beginning of the section. */
7178 case R_PPC_SECTOFF_LO:
7179 case R_PPC_SECTOFF_HI:
7180 case R_PPC_SECTOFF_HA:
7181 if (sec == NULL || sec->output_section == NULL)
7183 unresolved_reloc = TRUE;
7186 addend -= sec->output_section->vma;
7189 /* Negative relocations. */
7190 case R_PPC_EMB_NADDR32:
7191 case R_PPC_EMB_NADDR16:
7192 case R_PPC_EMB_NADDR16_LO:
7193 case R_PPC_EMB_NADDR16_HI:
7194 case R_PPC_EMB_NADDR16_HA:
7195 addend -= 2 * relocation;
7199 case R_PPC_GLOB_DAT:
7200 case R_PPC_JMP_SLOT:
7201 case R_PPC_RELATIVE:
7203 case R_PPC_PLTREL32:
7204 case R_PPC_PLT16_LO:
7205 case R_PPC_PLT16_HI:
7206 case R_PPC_PLT16_HA:
7208 case R_PPC_EMB_RELSEC16:
7209 case R_PPC_EMB_RELST_LO:
7210 case R_PPC_EMB_RELST_HI:
7211 case R_PPC_EMB_RELST_HA:
7212 case R_PPC_EMB_BIT_FLD:
7213 (*_bfd_error_handler)
7214 (_("%B: relocation %s is not yet supported for symbol %s."),
7219 bfd_set_error (bfd_error_invalid_operation);
7224 /* Do any further special processing. */
7230 case R_PPC_ADDR16_HA:
7231 case R_PPC_REL16_HA:
7232 case R_PPC_SECTOFF_HA:
7233 case R_PPC_TPREL16_HA:
7234 case R_PPC_DTPREL16_HA:
7235 case R_PPC_EMB_NADDR16_HA:
7236 case R_PPC_EMB_RELST_HA:
7237 /* It's just possible that this symbol is a weak symbol
7238 that's not actually defined anywhere. In that case,
7239 'sec' would be NULL, and we should leave the symbol
7240 alone (it will be set to zero elsewhere in the link). */
7245 case R_PPC_PLT16_HA:
7246 case R_PPC_GOT16_HA:
7247 case R_PPC_GOT_TLSGD16_HA:
7248 case R_PPC_GOT_TLSLD16_HA:
7249 case R_PPC_GOT_TPREL16_HA:
7250 case R_PPC_GOT_DTPREL16_HA:
7251 /* Add 0x10000 if sign bit in 0:15 is set.
7252 Bits 0:15 are not used. */
7258 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7259 "offset = %ld, addend = %ld\n",
7264 (long) rel->r_offset,
7268 if (unresolved_reloc
7269 && !((input_section->flags & SEC_DEBUGGING) != 0
7272 (*_bfd_error_handler)
7273 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7276 (long) rel->r_offset,
7282 r = _bfd_final_link_relocate (howto,
7290 if (r != bfd_reloc_ok)
7292 if (r == bfd_reloc_overflow)
7297 && h->root.type == bfd_link_hash_undefweak
7298 && howto->pc_relative)
7300 /* Assume this is a call protected by other code that
7301 detect the symbol is undefined. If this is the case,
7302 we can safely ignore the overflow. If not, the
7303 program is hosed anyway, and a little warning isn't
7309 if (! (*info->callbacks->reloc_overflow) (info,
7310 (h ? &h->root : NULL),
7321 (*_bfd_error_handler)
7322 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7323 input_bfd, input_section,
7324 (long) rel->r_offset, howto->name, sym_name, (int) r);
7331 fprintf (stderr, "\n");
7337 #define PPC_LO(v) ((v) & 0xffff)
7338 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7339 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7341 /* Finish up dynamic symbol handling. We set the contents of various
7342 dynamic sections here. */
7345 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7346 struct bfd_link_info *info,
7347 struct elf_link_hash_entry *h,
7348 Elf_Internal_Sym *sym)
7350 struct ppc_elf_link_hash_table *htab;
7351 struct plt_entry *ent;
7352 bfd_boolean doneone;
7355 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7356 h->root.root.string);
7359 htab = ppc_elf_hash_table (info);
7360 BFD_ASSERT (htab->elf.dynobj != NULL);
7363 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7364 if (ent->plt.offset != (bfd_vma) -1)
7368 Elf_Internal_Rela rela;
7370 bfd_vma reloc_index;
7372 if (htab->plt_type == PLT_NEW)
7373 reloc_index = ent->plt.offset / 4;
7376 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7377 / htab->plt_slot_size);
7378 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
7379 && htab->plt_type == PLT_OLD)
7380 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7383 /* This symbol has an entry in the procedure linkage table.
7385 if (htab->plt_type == PLT_VXWORKS)
7388 const bfd_vma *plt_entry;
7390 /* The first three entries in .got.plt are reserved. */
7391 got_offset = (reloc_index + 3) * 4;
7393 /* Use the right PLT. */
7394 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
7395 : ppc_elf_vxworks_plt_entry;
7397 /* Fill in the .plt on VxWorks. */
7400 bfd_put_32 (output_bfd,
7401 plt_entry[0] | PPC_HA (got_offset),
7402 htab->plt->contents + ent->plt.offset + 0);
7403 bfd_put_32 (output_bfd,
7404 plt_entry[1] | PPC_LO (got_offset),
7405 htab->plt->contents + ent->plt.offset + 4);
7409 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
7411 bfd_put_32 (output_bfd,
7412 plt_entry[0] | PPC_HA (got_loc),
7413 htab->plt->contents + ent->plt.offset + 0);
7414 bfd_put_32 (output_bfd,
7415 plt_entry[1] | PPC_LO (got_loc),
7416 htab->plt->contents + ent->plt.offset + 4);
7419 bfd_put_32 (output_bfd, plt_entry[2],
7420 htab->plt->contents + ent->plt.offset + 8);
7421 bfd_put_32 (output_bfd, plt_entry[3],
7422 htab->plt->contents + ent->plt.offset + 12);
7424 /* This instruction is an immediate load. The value loaded is
7425 the byte offset of the R_PPC_JMP_SLOT relocation from the
7426 start of the .rela.plt section. The value is stored in the
7427 low-order 16 bits of the load instruction. */
7428 /* NOTE: It appears that this is now an index rather than a
7429 prescaled offset. */
7430 bfd_put_32 (output_bfd,
7431 plt_entry[4] | reloc_index,
7432 htab->plt->contents + ent->plt.offset + 16);
7433 /* This instruction is a PC-relative branch whose target is
7434 the start of the PLT section. The address of this branch
7435 instruction is 20 bytes beyond the start of this PLT entry.
7436 The address is encoded in bits 6-29, inclusive. The value
7437 stored is right-shifted by two bits, permitting a 26-bit
7439 bfd_put_32 (output_bfd,
7441 | (-(ent->plt.offset + 20) & 0x03fffffc)),
7442 htab->plt->contents + ent->plt.offset + 20);
7443 bfd_put_32 (output_bfd, plt_entry[6],
7444 htab->plt->contents + ent->plt.offset + 24);
7445 bfd_put_32 (output_bfd, plt_entry[7],
7446 htab->plt->contents + ent->plt.offset + 28);
7448 /* Fill in the GOT entry corresponding to this PLT slot with
7449 the address immediately after the the "bctr" instruction
7450 in this PLT entry. */
7451 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
7452 + htab->plt->output_offset
7453 + ent->plt.offset + 16),
7454 htab->sgotplt->contents + got_offset);
7458 /* Fill in a couple of entries in .rela.plt.unloaded. */
7459 loc = htab->srelplt2->contents
7460 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
7461 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
7462 * sizeof (Elf32_External_Rela));
7464 /* Provide the @ha relocation for the first instruction. */
7465 rela.r_offset = (htab->plt->output_section->vma
7466 + htab->plt->output_offset
7467 + ent->plt.offset + 2);
7468 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
7470 rela.r_addend = got_offset;
7471 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7472 loc += sizeof (Elf32_External_Rela);
7474 /* Provide the @l relocation for the second instruction. */
7475 rela.r_offset = (htab->plt->output_section->vma
7476 + htab->plt->output_offset
7477 + ent->plt.offset + 6);
7478 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
7480 rela.r_addend = got_offset;
7481 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7482 loc += sizeof (Elf32_External_Rela);
7484 /* Provide a relocation for the GOT entry corresponding to this
7485 PLT slot. Point it at the middle of the .plt entry. */
7486 rela.r_offset = (htab->sgotplt->output_section->vma
7487 + htab->sgotplt->output_offset
7489 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
7491 rela.r_addend = ent->plt.offset + 16;
7492 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7495 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7496 In particular, the offset for the relocation is not the
7497 address of the PLT entry for this function, as specified
7498 by the ABI. Instead, the offset is set to the address of
7499 the GOT slot for this function. See EABI 4.4.4.1. */
7500 rela.r_offset = (htab->sgotplt->output_section->vma
7501 + htab->sgotplt->output_offset
7507 rela.r_offset = (htab->plt->output_section->vma
7508 + htab->plt->output_offset
7510 if (htab->plt_type == PLT_OLD)
7512 /* We don't need to fill in the .plt. The ppc dynamic
7513 linker will fill it in. */
7517 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
7518 + htab->glink->output_section->vma
7519 + htab->glink->output_offset);
7520 bfd_put_32 (output_bfd, val,
7521 htab->plt->contents + ent->plt.offset);
7525 /* Fill in the entry in the .rela.plt section. */
7526 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
7529 loc = (htab->relplt->contents
7530 + reloc_index * sizeof (Elf32_External_Rela));
7531 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7533 if (!h->def_regular)
7535 /* Mark the symbol as undefined, rather than as
7536 defined in the .plt section. Leave the value if
7537 there were any relocations where pointer equality
7538 matters (this is a clue for the dynamic linker, to
7539 make function pointer comparisons work between an
7540 application and shared library), otherwise set it
7542 sym->st_shndx = SHN_UNDEF;
7543 if (!h->pointer_equality_needed)
7545 else if (!h->ref_regular_nonweak)
7547 /* This breaks function pointer comparisons, but
7548 that is better than breaking tests for a NULL
7549 function pointer. */
7556 if (htab->plt_type == PLT_NEW)
7561 plt = (ent->plt.offset
7562 + htab->plt->output_section->vma
7563 + htab->plt->output_offset);
7564 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
7566 if (info->shared || info->pie)
7570 if (ent->addend >= 32768)
7572 + ent->sec->output_section->vma
7573 + ent->sec->output_offset);
7574 else if (htab->elf.hgot != NULL)
7575 got = SYM_VAL (htab->elf.hgot);
7579 if (plt + 0x8000 < 0x10000)
7581 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7583 bfd_put_32 (output_bfd, MTCTR_11, p);
7585 bfd_put_32 (output_bfd, BCTR, p);
7587 bfd_put_32 (output_bfd, NOP, p);
7592 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7594 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7596 bfd_put_32 (output_bfd, MTCTR_11, p);
7598 bfd_put_32 (output_bfd, BCTR, p);
7604 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7606 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7608 bfd_put_32 (output_bfd, MTCTR_11, p);
7610 bfd_put_32 (output_bfd, BCTR, p);
7613 /* We only need one non-PIC glink stub. */
7624 Elf_Internal_Rela rela;
7627 /* This symbols needs a copy reloc. Set it up. */
7630 fprintf (stderr, ", copy");
7633 BFD_ASSERT (h->dynindx != -1);
7635 if (ppc_elf_hash_entry (h)->has_sda_refs)
7639 BFD_ASSERT (s != NULL);
7641 rela.r_offset = SYM_VAL (h);
7642 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7644 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7645 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7649 fprintf (stderr, "\n");
7652 /* Mark some specially defined symbols as absolute. */
7653 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7654 || (!htab->is_vxworks
7655 && (h == htab->elf.hgot
7656 || strcmp (h->root.root.string,
7657 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7658 sym->st_shndx = SHN_ABS;
7663 static enum elf_reloc_type_class
7664 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
7666 switch (ELF32_R_TYPE (rela->r_info))
7668 case R_PPC_RELATIVE:
7669 return reloc_class_relative;
7672 case R_PPC_JMP_SLOT:
7673 return reloc_class_plt;
7675 return reloc_class_copy;
7677 return reloc_class_normal;
7681 /* Finish up the dynamic sections. */
7684 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7685 struct bfd_link_info *info)
7689 struct ppc_elf_link_hash_table *htab;
7692 bfd_boolean ret = TRUE;
7695 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7698 htab = ppc_elf_hash_table (info);
7699 dynobj = elf_hash_table (info)->dynobj;
7700 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7701 if (htab->is_vxworks)
7702 splt = bfd_get_section_by_name (dynobj, ".plt");
7707 if (htab->elf.hgot != NULL)
7708 got = SYM_VAL (htab->elf.hgot);
7710 if (htab->elf.dynamic_sections_created)
7712 Elf32_External_Dyn *dyncon, *dynconend;
7714 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7716 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7717 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7718 for (; dyncon < dynconend; dyncon++)
7720 Elf_Internal_Dyn dyn;
7723 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7728 if (htab->is_vxworks)
7732 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7736 dyn.d_un.d_val = htab->relplt->size;
7741 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7745 dyn.d_un.d_ptr = got;
7749 if (htab->is_vxworks)
7752 dyn.d_un.d_ptr -= htab->relplt->size;
7758 if (htab->is_vxworks
7759 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7764 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7768 if (htab->got != NULL)
7770 if (htab->elf.hgot->root.u.def.section == htab->got
7771 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
7773 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
7775 p += htab->elf.hgot->root.u.def.value;
7776 if (htab->plt_type == PLT_OLD)
7778 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
7779 so that a function can easily find the address of
7780 _GLOBAL_OFFSET_TABLE_. */
7781 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
7782 < htab->elf.hgot->root.u.def.section->size);
7783 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
7788 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
7789 BFD_ASSERT (htab->elf.hgot->root.u.def.value
7790 < htab->elf.hgot->root.u.def.section->size);
7791 bfd_put_32 (output_bfd, val, p);
7796 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
7797 htab->elf.hgot->root.root.string,
7798 (htab->sgotplt != NULL
7799 ? htab->sgotplt->name : htab->got->name));
7800 bfd_set_error (bfd_error_bad_value);
7804 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7807 /* Fill in the first entry in the VxWorks procedure linkage table. */
7808 if (splt && splt->size > 0)
7810 /* Use the right PLT. */
7811 static const bfd_vma *plt_entry = NULL;
7812 plt_entry = info->shared ?
7813 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7817 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
7819 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
7820 splt->contents + 0);
7821 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
7822 splt->contents + 4);
7826 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7827 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7829 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7830 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7831 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7832 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7833 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7834 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7838 Elf_Internal_Rela rela;
7841 loc = htab->srelplt2->contents;
7843 /* Output the @ha relocation for the first instruction. */
7844 rela.r_offset = (htab->plt->output_section->vma
7845 + htab->plt->output_offset
7847 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7849 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7850 loc += sizeof (Elf32_External_Rela);
7852 /* Output the @l relocation for the second instruction. */
7853 rela.r_offset = (htab->plt->output_section->vma
7854 + htab->plt->output_offset
7856 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7858 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7859 loc += sizeof (Elf32_External_Rela);
7861 /* Fix up the remaining relocations. They may have the wrong
7862 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7863 in which symbols were output. */
7864 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
7866 Elf_Internal_Rela rel;
7868 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7869 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7870 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7871 loc += sizeof (Elf32_External_Rela);
7873 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7874 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7875 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7876 loc += sizeof (Elf32_External_Rela);
7878 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
7879 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
7880 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
7881 loc += sizeof (Elf32_External_Rela);
7886 if (htab->glink != NULL && htab->glink->contents != NULL)
7889 unsigned char *endp;
7894 * PIC glink code is the following:
7896 * # ith PLT code stub.
7897 * addis 11,30,(plt+(i-1)*4-got)@ha
7898 * lwz 11,(plt+(i-1)*4-got)@l(11)
7902 * # A table of branches, one for each plt entry.
7903 * # The idea is that the plt call stub loads ctr and r11 with these
7904 * # addresses, so (r11 - res_0) gives the plt index * 4.
7905 * res_0: b PLTresolve
7906 * res_1: b PLTresolve
7908 * # Some number of entries towards the end can be nops
7914 * addis 11,11,(1f-res_0)@ha
7917 * 1: addi 11,11,(1b-res_0)@l
7920 * sub 11,11,12 # r11 = index * 4
7921 * addis 12,12,(got+4-1b)@ha
7922 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
7923 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
7926 * add 11,0,11 # r11 = index * 12 = reloc offset.
7929 static const unsigned int pic_plt_resolve[] =
7950 * Non-PIC glink code is a little simpler.
7952 * # ith PLT code stub.
7953 * lis 11,(plt+(i-1)*4)@ha
7954 * lwz 11,(plt+(i-1)*4)@l(11)
7958 * The branch table is the same, then comes
7962 * addis 11,11,(-res_0)@ha
7963 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
7964 * addi 11,11,(-res_0)@l # r11 = index * 4
7967 * lwz 12,(got+8)@l(12) # got[2] contains the map address
7968 * add 11,0,11 # r11 = index * 12 = reloc offset.
7971 static const unsigned int plt_resolve[] =
7991 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
7993 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
7996 /* Build the branch table, one for each plt entry (less one),
7997 and perhaps some padding. */
7998 p = htab->glink->contents;
7999 p += htab->glink_pltresolve;
8000 endp = htab->glink->contents;
8001 endp += htab->glink->size - GLINK_PLTRESOLVE;
8002 while (p < endp - 8 * 4)
8004 bfd_put_32 (output_bfd, B + endp - p, p);
8009 bfd_put_32 (output_bfd, NOP, p);
8013 res0 = (htab->glink_pltresolve
8014 + htab->glink->output_section->vma
8015 + htab->glink->output_offset);
8017 /* Last comes the PLTresolve stub. */
8018 if (info->shared || info->pie)
8022 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8024 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8027 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8029 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8030 + htab->glink->output_section->vma
8031 + htab->glink->output_offset);
8033 bfd_put_32 (output_bfd,
8034 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8035 bfd_put_32 (output_bfd,
8036 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8037 bfd_put_32 (output_bfd,
8038 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8039 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8041 bfd_put_32 (output_bfd,
8042 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8043 bfd_put_32 (output_bfd,
8044 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8048 bfd_put_32 (output_bfd,
8049 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8050 bfd_put_32 (output_bfd,
8051 LWZ_12_12 + 4, p + 9*4);
8056 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8058 bfd_put_32 (output_bfd, plt_resolve[i], p);
8061 p -= 4 * ARRAY_SIZE (plt_resolve);
8063 bfd_put_32 (output_bfd,
8064 LIS_12 + PPC_HA (got + 4), p + 0*4);
8065 bfd_put_32 (output_bfd,
8066 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8067 bfd_put_32 (output_bfd,
8068 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8069 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8071 bfd_put_32 (output_bfd,
8072 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8073 bfd_put_32 (output_bfd,
8074 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8078 bfd_put_32 (output_bfd,
8079 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8080 bfd_put_32 (output_bfd,
8081 LWZ_12_12 + 4, p + 6*4);
8089 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8090 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8091 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8092 #define TARGET_BIG_NAME "elf32-powerpc"
8093 #define ELF_ARCH bfd_arch_powerpc
8094 #define ELF_MACHINE_CODE EM_PPC
8095 #ifdef __QNXTARGET__
8096 #define ELF_MAXPAGESIZE 0x1000
8098 #define ELF_MAXPAGESIZE 0x10000
8100 #define ELF_MINPAGESIZE 0x1000
8101 #define ELF_COMMONPAGESIZE 0x1000
8102 #define elf_info_to_howto ppc_elf_info_to_howto
8104 #ifdef EM_CYGNUS_POWERPC
8105 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8109 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8112 #define elf_backend_plt_not_loaded 1
8113 #define elf_backend_can_gc_sections 1
8114 #define elf_backend_can_refcount 1
8115 #define elf_backend_rela_normal 1
8117 #define bfd_elf32_mkobject ppc_elf_mkobject
8118 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8119 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8120 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8121 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8122 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8123 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8124 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8126 #define elf_backend_object_p ppc_elf_object_p
8127 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8128 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8129 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8130 #define elf_backend_relocate_section ppc_elf_relocate_section
8131 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8132 #define elf_backend_check_relocs ppc_elf_check_relocs
8133 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8134 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8135 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8136 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8137 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8138 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8139 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8140 #define elf_backend_fake_sections ppc_elf_fake_sections
8141 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8142 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8143 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8144 #define elf_backend_write_core_note ppc_elf_write_core_note
8145 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8146 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8147 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8148 #define elf_backend_write_section ppc_elf_write_section
8149 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8150 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8151 #define elf_backend_action_discarded ppc_elf_action_discarded
8152 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8154 #include "elf32-target.h"
8156 /* VxWorks Target */
8158 #undef TARGET_LITTLE_SYM
8159 #undef TARGET_LITTLE_NAME
8161 #undef TARGET_BIG_SYM
8162 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8163 #undef TARGET_BIG_NAME
8164 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8166 /* VxWorks uses the elf default section flags for .plt. */
8167 static const struct bfd_elf_special_section *
8168 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
8170 if (sec->name == NULL)
8173 if (strcmp (sec->name, ".plt") == 0)
8174 return _bfd_elf_get_sec_type_attr (abfd, sec);
8176 return ppc_elf_get_sec_type_attr (abfd, sec);
8179 /* Like ppc_elf_link_hash_table_create, but overrides
8180 appropriately for VxWorks. */
8181 static struct bfd_link_hash_table *
8182 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8184 struct bfd_link_hash_table *ret;
8186 ret = ppc_elf_link_hash_table_create (abfd);
8189 struct ppc_elf_link_hash_table *htab
8190 = (struct ppc_elf_link_hash_table *)ret;
8191 htab->is_vxworks = 1;
8192 htab->plt_type = PLT_VXWORKS;
8193 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8194 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8195 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8200 /* Tweak magic VxWorks symbols as they are loaded. */
8202 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8203 struct bfd_link_info *info,
8204 Elf_Internal_Sym *sym,
8205 const char **namep ATTRIBUTE_UNUSED,
8206 flagword *flagsp ATTRIBUTE_UNUSED,
8210 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8214 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8218 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8220 ppc_elf_final_write_processing(abfd, linker);
8221 elf_vxworks_final_write_processing(abfd, linker);
8224 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8226 #undef elf_backend_want_plt_sym
8227 #define elf_backend_want_plt_sym 1
8228 #undef elf_backend_want_got_plt
8229 #define elf_backend_want_got_plt 1
8230 #undef elf_backend_got_symbol_offset
8231 #define elf_backend_got_symbol_offset 0
8232 #undef elf_backend_plt_not_loaded
8233 #define elf_backend_plt_not_loaded 0
8234 #undef elf_backend_plt_readonly
8235 #define elf_backend_plt_readonly 1
8236 #undef elf_backend_got_header_size
8237 #define elf_backend_got_header_size 12
8239 #undef bfd_elf32_get_synthetic_symtab
8241 #undef bfd_elf32_bfd_link_hash_table_create
8242 #define bfd_elf32_bfd_link_hash_table_create \
8243 ppc_elf_vxworks_link_hash_table_create
8244 #undef elf_backend_add_symbol_hook
8245 #define elf_backend_add_symbol_hook \
8246 ppc_elf_vxworks_add_symbol_hook
8247 #undef elf_backend_link_output_symbol_hook
8248 #define elf_backend_link_output_symbol_hook \
8249 elf_vxworks_link_output_symbol_hook
8250 #undef elf_backend_final_write_processing
8251 #define elf_backend_final_write_processing \
8252 ppc_elf_vxworks_final_write_processing
8253 #undef elf_backend_get_sec_type_attr
8254 #define elf_backend_get_sec_type_attr \
8255 ppc_elf_vxworks_get_sec_type_attr
8256 #undef elf_backend_emit_relocs
8257 #define elf_backend_emit_relocs \
8258 elf_vxworks_emit_relocs
8261 #define elf32_bed ppc_elf_vxworks_bed
8263 #include "elf32-target.h"
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