1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
24 /* This file is based on a preliminary PowerPC ELF ABI. The
25 information may not match the final PowerPC ELF ABI. It includes
26 suggestions from the in-progress Embedded PowerPC ABI, and that
27 information may also not match. */
36 #include "elf32-ppc.h"
37 #include "elf-vxworks.h"
39 /* RELA relocations are used here. */
41 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc_elf_unhandled_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 /* Branch prediction bit for branch taken relocs. */
47 #define BRANCH_PREDICT_BIT 0x200000
48 /* Mask to set RA in memory instructions. */
49 #define RA_REGISTER_MASK 0x001f0000
50 /* Value to shift register by to insert RA. */
51 #define RA_REGISTER_SHIFT 16
53 /* The name of the dynamic interpreter. This is put in the .interp
55 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
57 /* For old-style PLT. */
58 /* The number of single-slot PLT entries (the rest use two slots). */
59 #define PLT_NUM_SINGLE_ENTRIES 8192
61 /* For new-style .glink and .plt. */
62 #define GLINK_PLTRESOLVE 16*4
63 #define GLINK_ENTRY_SIZE 4*4
65 /* VxWorks uses its own plt layout, filled in by the static linker. */
67 /* The standard VxWorks PLT entry. */
68 #define VXWORKS_PLT_ENTRY_SIZE 32
69 static const bfd_vma ppc_elf_vxworks_plt_entry
70 [VXWORKS_PLT_ENTRY_SIZE / 4] =
72 0x3d800000, /* lis r12,0 */
73 0x818c0000, /* lwz r12,0(r12) */
74 0x7d8903a6, /* mtctr r12 */
75 0x4e800420, /* bctr */
76 0x39600000, /* li r11,0 */
77 0x48000000, /* b 14 <.PLT0resolve+0x4> */
81 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
82 [VXWORKS_PLT_ENTRY_SIZE / 4] =
84 0x3d9e0000, /* addis r12,r30,0 */
85 0x818c0000, /* lwz r12,0(r12) */
86 0x7d8903a6, /* mtctr r12 */
87 0x4e800420, /* bctr */
88 0x39600000, /* li r11,0 */
89 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
94 /* The initial VxWorks PLT entry. */
95 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
96 static const bfd_vma ppc_elf_vxworks_plt0_entry
97 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
99 0x3d800000, /* lis r12,0 */
100 0x398c0000, /* addi r12,r12,0 */
101 0x800c0008, /* lwz r0,8(r12) */
102 0x7c0903a6, /* mtctr r0 */
103 0x818c0004, /* lwz r12,4(r12) */
104 0x4e800420, /* bctr */
105 0x60000000, /* nop */
106 0x60000000, /* nop */
108 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
109 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
111 0x819e0008, /* lwz r12,8(r30) */
112 0x7d8903a6, /* mtctr r12 */
113 0x819e0004, /* lwz r12,4(r30) */
114 0x4e800420, /* bctr */
115 0x60000000, /* nop */
116 0x60000000, /* nop */
117 0x60000000, /* nop */
118 0x60000000, /* nop */
121 /* For executables, we have some additional relocations in
122 .rela.plt.unloaded, for the kernel loader. */
124 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
125 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
126 /* The number of relocations in the PLTResolve slot. */
127 #define VXWORKS_PLTRESOLVE_RELOCS 2
128 /* The number of relocations in the PLTResolve slot when when creating
130 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
132 /* Some instructions. */
133 #define ADDIS_11_11 0x3d6b0000
134 #define ADDIS_11_30 0x3d7e0000
135 #define ADDIS_12_12 0x3d8c0000
136 #define ADDI_11_11 0x396b0000
137 #define ADD_0_11_11 0x7c0b5a14
138 #define ADD_11_0_11 0x7d605a14
140 #define BCL_20_31 0x429f0005
141 #define BCTR 0x4e800420
142 #define LIS_11 0x3d600000
143 #define LIS_12 0x3d800000
144 #define LWZU_0_12 0x840c0000
145 #define LWZ_0_12 0x800c0000
146 #define LWZ_11_11 0x816b0000
147 #define LWZ_11_30 0x817e0000
148 #define LWZ_12_12 0x818c0000
149 #define MFLR_0 0x7c0802a6
150 #define MFLR_12 0x7d8802a6
151 #define MTCTR_0 0x7c0903a6
152 #define MTCTR_11 0x7d6903a6
153 #define MTLR_0 0x7c0803a6
154 #define NOP 0x60000000
155 #define SUB_11_11_12 0x7d6c5850
157 /* Offset of tp and dtp pointers from start of TLS block. */
158 #define TP_OFFSET 0x7000
159 #define DTP_OFFSET 0x8000
161 /* The value of a defined global symbol. */
162 #define SYM_VAL(SYM) \
163 ((SYM)->root.u.def.section->output_section->vma \
164 + (SYM)->root.u.def.section->output_offset \
165 + (SYM)->root.u.def.value)
167 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
169 static reloc_howto_type ppc_elf_howto_raw[] = {
170 /* This reloc does nothing. */
171 HOWTO (R_PPC_NONE, /* type */
173 2, /* size (0 = byte, 1 = short, 2 = long) */
175 FALSE, /* pc_relative */
177 complain_overflow_bitfield, /* complain_on_overflow */
178 bfd_elf_generic_reloc, /* special_function */
179 "R_PPC_NONE", /* name */
180 FALSE, /* partial_inplace */
183 FALSE), /* pcrel_offset */
185 /* A standard 32 bit relocation. */
186 HOWTO (R_PPC_ADDR32, /* type */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
190 FALSE, /* pc_relative */
192 complain_overflow_bitfield, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_PPC_ADDR32", /* name */
195 FALSE, /* partial_inplace */
197 0xffffffff, /* dst_mask */
198 FALSE), /* pcrel_offset */
200 /* An absolute 26 bit branch; the lower two bits must be zero.
201 FIXME: we don't check that, we just clear them. */
202 HOWTO (R_PPC_ADDR24, /* type */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
206 FALSE, /* pc_relative */
208 complain_overflow_bitfield, /* complain_on_overflow */
209 bfd_elf_generic_reloc, /* special_function */
210 "R_PPC_ADDR24", /* name */
211 FALSE, /* partial_inplace */
213 0x3fffffc, /* dst_mask */
214 FALSE), /* pcrel_offset */
216 /* A standard 16 bit relocation. */
217 HOWTO (R_PPC_ADDR16, /* type */
219 1, /* size (0 = byte, 1 = short, 2 = long) */
221 FALSE, /* pc_relative */
223 complain_overflow_bitfield, /* complain_on_overflow */
224 bfd_elf_generic_reloc, /* special_function */
225 "R_PPC_ADDR16", /* name */
226 FALSE, /* partial_inplace */
228 0xffff, /* dst_mask */
229 FALSE), /* pcrel_offset */
231 /* A 16 bit relocation without overflow. */
232 HOWTO (R_PPC_ADDR16_LO, /* type */
234 1, /* size (0 = byte, 1 = short, 2 = long) */
236 FALSE, /* pc_relative */
238 complain_overflow_dont,/* complain_on_overflow */
239 bfd_elf_generic_reloc, /* special_function */
240 "R_PPC_ADDR16_LO", /* name */
241 FALSE, /* partial_inplace */
243 0xffff, /* dst_mask */
244 FALSE), /* pcrel_offset */
246 /* The high order 16 bits of an address. */
247 HOWTO (R_PPC_ADDR16_HI, /* type */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
251 FALSE, /* pc_relative */
253 complain_overflow_dont, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_PPC_ADDR16_HI", /* name */
256 FALSE, /* partial_inplace */
258 0xffff, /* dst_mask */
259 FALSE), /* pcrel_offset */
261 /* The high order 16 bits of an address, plus 1 if the contents of
262 the low 16 bits, treated as a signed number, is negative. */
263 HOWTO (R_PPC_ADDR16_HA, /* type */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE, /* pc_relative */
269 complain_overflow_dont, /* complain_on_overflow */
270 ppc_elf_addr16_ha_reloc, /* special_function */
271 "R_PPC_ADDR16_HA", /* name */
272 FALSE, /* partial_inplace */
274 0xffff, /* dst_mask */
275 FALSE), /* pcrel_offset */
277 /* An absolute 16 bit branch; the lower two bits must be zero.
278 FIXME: we don't check that, we just clear them. */
279 HOWTO (R_PPC_ADDR14, /* type */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE, /* pc_relative */
285 complain_overflow_bitfield, /* complain_on_overflow */
286 bfd_elf_generic_reloc, /* special_function */
287 "R_PPC_ADDR14", /* name */
288 FALSE, /* partial_inplace */
290 0xfffc, /* dst_mask */
291 FALSE), /* pcrel_offset */
293 /* An absolute 16 bit branch, for which bit 10 should be set to
294 indicate that the branch is expected to be taken. The lower two
295 bits must be zero. */
296 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_bitfield, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14_BRTAKEN",/* name */
305 FALSE, /* partial_inplace */
307 0xfffc, /* dst_mask */
308 FALSE), /* pcrel_offset */
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is not expected to be taken. The lower
312 two bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_bitfield, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRNTAKEN",/* name */
322 FALSE, /* partial_inplace */
324 0xfffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
327 /* A relative 26 bit branch; the lower two bits must be zero. */
328 HOWTO (R_PPC_REL24, /* type */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
332 TRUE, /* pc_relative */
334 complain_overflow_signed, /* complain_on_overflow */
335 bfd_elf_generic_reloc, /* special_function */
336 "R_PPC_REL24", /* name */
337 FALSE, /* partial_inplace */
339 0x3fffffc, /* dst_mask */
340 TRUE), /* pcrel_offset */
342 /* A relative 16 bit branch; the lower two bits must be zero. */
343 HOWTO (R_PPC_REL14, /* type */
345 2, /* size (0 = byte, 1 = short, 2 = long) */
347 TRUE, /* pc_relative */
349 complain_overflow_signed, /* complain_on_overflow */
350 bfd_elf_generic_reloc, /* special_function */
351 "R_PPC_REL14", /* name */
352 FALSE, /* partial_inplace */
354 0xfffc, /* dst_mask */
355 TRUE), /* pcrel_offset */
357 /* A relative 16 bit branch. Bit 10 should be set to indicate that
358 the branch is expected to be taken. The lower two bits must be
360 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 TRUE, /* pc_relative */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14_BRTAKEN", /* name */
369 FALSE, /* partial_inplace */
371 0xfffc, /* dst_mask */
372 TRUE), /* pcrel_offset */
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is not expected to be taken. The lower two bits must
377 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRNTAKEN",/* name */
386 FALSE, /* partial_inplace */
388 0xfffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
391 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
393 HOWTO (R_PPC_GOT16, /* type */
395 1, /* size (0 = byte, 1 = short, 2 = long) */
397 FALSE, /* pc_relative */
399 complain_overflow_signed, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC_GOT16", /* name */
402 FALSE, /* partial_inplace */
404 0xffff, /* dst_mask */
405 FALSE), /* pcrel_offset */
407 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
409 HOWTO (R_PPC_GOT16_LO, /* type */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE, /* pc_relative */
415 complain_overflow_dont, /* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_PPC_GOT16_LO", /* name */
418 FALSE, /* partial_inplace */
420 0xffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
423 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
425 HOWTO (R_PPC_GOT16_HI, /* type */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
429 FALSE, /* pc_relative */
431 complain_overflow_bitfield, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_PPC_GOT16_HI", /* name */
434 FALSE, /* partial_inplace */
436 0xffff, /* dst_mask */
437 FALSE), /* pcrel_offset */
439 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
441 HOWTO (R_PPC_GOT16_HA, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE, /* pc_relative */
447 complain_overflow_bitfield, /* complain_on_overflow */
448 ppc_elf_addr16_ha_reloc, /* special_function */
449 "R_PPC_GOT16_HA", /* name */
450 FALSE, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE), /* pcrel_offset */
455 /* Like R_PPC_REL24, but referring to the procedure linkage table
456 entry for the symbol. */
457 HOWTO (R_PPC_PLTREL24, /* type */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
461 TRUE, /* pc_relative */
463 complain_overflow_signed, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_PPC_PLTREL24", /* name */
466 FALSE, /* partial_inplace */
468 0x3fffffc, /* dst_mask */
469 TRUE), /* pcrel_offset */
471 /* This is used only by the dynamic linker. The symbol should exist
472 both in the object being run and in some shared library. The
473 dynamic linker copies the data addressed by the symbol from the
474 shared library into the object, because the object being
475 run has to have the data at some particular address. */
476 HOWTO (R_PPC_COPY, /* type */
478 2, /* size (0 = byte, 1 = short, 2 = long) */
480 FALSE, /* pc_relative */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC_COPY", /* name */
485 FALSE, /* partial_inplace */
488 FALSE), /* pcrel_offset */
490 /* Like R_PPC_ADDR32, but used when setting global offset table
492 HOWTO (R_PPC_GLOB_DAT, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE, /* pc_relative */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_PPC_GLOB_DAT", /* name */
501 FALSE, /* partial_inplace */
503 0xffffffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
506 /* Marks a procedure linkage table entry for a symbol. */
507 HOWTO (R_PPC_JMP_SLOT, /* type */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
511 FALSE, /* pc_relative */
513 complain_overflow_bitfield, /* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_PPC_JMP_SLOT", /* name */
516 FALSE, /* partial_inplace */
519 FALSE), /* pcrel_offset */
521 /* Used only by the dynamic linker. When the object is run, this
522 longword is set to the load address of the object, plus the
524 HOWTO (R_PPC_RELATIVE, /* type */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE, /* pc_relative */
530 complain_overflow_bitfield, /* complain_on_overflow */
531 bfd_elf_generic_reloc, /* special_function */
532 "R_PPC_RELATIVE", /* name */
533 FALSE, /* partial_inplace */
535 0xffffffff, /* dst_mask */
536 FALSE), /* pcrel_offset */
538 /* Like R_PPC_REL24, but uses the value of the symbol within the
539 object rather than the final value. Normally used for
540 _GLOBAL_OFFSET_TABLE_. */
541 HOWTO (R_PPC_LOCAL24PC, /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 TRUE, /* pc_relative */
547 complain_overflow_signed, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_LOCAL24PC", /* name */
550 FALSE, /* partial_inplace */
552 0x3fffffc, /* dst_mask */
553 TRUE), /* pcrel_offset */
555 /* Like R_PPC_ADDR32, but may be unaligned. */
556 HOWTO (R_PPC_UADDR32, /* type */
558 2, /* size (0 = byte, 1 = short, 2 = long) */
560 FALSE, /* pc_relative */
562 complain_overflow_bitfield, /* complain_on_overflow */
563 bfd_elf_generic_reloc, /* special_function */
564 "R_PPC_UADDR32", /* name */
565 FALSE, /* partial_inplace */
567 0xffffffff, /* dst_mask */
568 FALSE), /* pcrel_offset */
570 /* Like R_PPC_ADDR16, but may be unaligned. */
571 HOWTO (R_PPC_UADDR16, /* type */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
575 FALSE, /* pc_relative */
577 complain_overflow_bitfield, /* complain_on_overflow */
578 bfd_elf_generic_reloc, /* special_function */
579 "R_PPC_UADDR16", /* name */
580 FALSE, /* partial_inplace */
582 0xffff, /* dst_mask */
583 FALSE), /* pcrel_offset */
585 /* 32-bit PC relative */
586 HOWTO (R_PPC_REL32, /* type */
588 2, /* size (0 = byte, 1 = short, 2 = long) */
590 TRUE, /* pc_relative */
592 complain_overflow_bitfield, /* complain_on_overflow */
593 bfd_elf_generic_reloc, /* special_function */
594 "R_PPC_REL32", /* name */
595 FALSE, /* partial_inplace */
597 0xffffffff, /* dst_mask */
598 TRUE), /* pcrel_offset */
600 /* 32-bit relocation to the symbol's procedure linkage table.
601 FIXME: not supported. */
602 HOWTO (R_PPC_PLT32, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 FALSE, /* pc_relative */
608 complain_overflow_bitfield, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_PLT32", /* name */
611 FALSE, /* partial_inplace */
614 FALSE), /* pcrel_offset */
616 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
617 FIXME: not supported. */
618 HOWTO (R_PPC_PLTREL32, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 TRUE, /* pc_relative */
624 complain_overflow_bitfield, /* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_PPC_PLTREL32", /* name */
627 FALSE, /* partial_inplace */
630 TRUE), /* pcrel_offset */
632 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
634 HOWTO (R_PPC_PLT16_LO, /* type */
636 1, /* size (0 = byte, 1 = short, 2 = long) */
638 FALSE, /* pc_relative */
640 complain_overflow_dont, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_PPC_PLT16_LO", /* name */
643 FALSE, /* partial_inplace */
645 0xffff, /* dst_mask */
646 FALSE), /* pcrel_offset */
648 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
650 HOWTO (R_PPC_PLT16_HI, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE, /* pc_relative */
656 complain_overflow_bitfield, /* complain_on_overflow */
657 bfd_elf_generic_reloc, /* special_function */
658 "R_PPC_PLT16_HI", /* name */
659 FALSE, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE), /* pcrel_offset */
664 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
666 HOWTO (R_PPC_PLT16_HA, /* type */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE, /* pc_relative */
672 complain_overflow_bitfield, /* complain_on_overflow */
673 ppc_elf_addr16_ha_reloc, /* special_function */
674 "R_PPC_PLT16_HA", /* name */
675 FALSE, /* partial_inplace */
677 0xffff, /* dst_mask */
678 FALSE), /* pcrel_offset */
680 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
682 HOWTO (R_PPC_SDAREL16, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE, /* pc_relative */
688 complain_overflow_signed, /* complain_on_overflow */
689 bfd_elf_generic_reloc, /* special_function */
690 "R_PPC_SDAREL16", /* name */
691 FALSE, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
696 /* 16-bit section relative relocation. */
697 HOWTO (R_PPC_SECTOFF, /* type */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
701 FALSE, /* pc_relative */
703 complain_overflow_bitfield, /* complain_on_overflow */
704 bfd_elf_generic_reloc, /* special_function */
705 "R_PPC_SECTOFF", /* name */
706 FALSE, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE), /* pcrel_offset */
711 /* 16-bit lower half section relative relocation. */
712 HOWTO (R_PPC_SECTOFF_LO, /* type */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
716 FALSE, /* pc_relative */
718 complain_overflow_dont, /* complain_on_overflow */
719 bfd_elf_generic_reloc, /* special_function */
720 "R_PPC_SECTOFF_LO", /* name */
721 FALSE, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
726 /* 16-bit upper half section relative relocation. */
727 HOWTO (R_PPC_SECTOFF_HI, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE, /* pc_relative */
733 complain_overflow_bitfield, /* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_PPC_SECTOFF_HI", /* name */
736 FALSE, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE), /* pcrel_offset */
741 /* 16-bit upper half adjusted section relative relocation. */
742 HOWTO (R_PPC_SECTOFF_HA, /* type */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
746 FALSE, /* pc_relative */
748 complain_overflow_bitfield, /* complain_on_overflow */
749 ppc_elf_addr16_ha_reloc, /* special_function */
750 "R_PPC_SECTOFF_HA", /* name */
751 FALSE, /* partial_inplace */
753 0xffff, /* dst_mask */
754 FALSE), /* pcrel_offset */
756 /* Marker relocs for TLS. */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
761 FALSE, /* pc_relative */
763 complain_overflow_dont, /* complain_on_overflow */
764 bfd_elf_generic_reloc, /* special_function */
765 "R_PPC_TLS", /* name */
766 FALSE, /* partial_inplace */
769 FALSE), /* pcrel_offset */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
775 FALSE, /* pc_relative */
777 complain_overflow_dont, /* complain_on_overflow */
778 bfd_elf_generic_reloc, /* special_function */
779 "R_PPC_TLSGD", /* name */
780 FALSE, /* partial_inplace */
783 FALSE), /* pcrel_offset */
787 2, /* size (0 = byte, 1 = short, 2 = long) */
789 FALSE, /* pc_relative */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC_TLSLD", /* name */
794 FALSE, /* partial_inplace */
797 FALSE), /* pcrel_offset */
799 /* Computes the load module index of the load module that contains the
800 definition of its TLS sym. */
801 HOWTO (R_PPC_DTPMOD32,
803 2, /* size (0 = byte, 1 = short, 2 = long) */
805 FALSE, /* pc_relative */
807 complain_overflow_dont, /* complain_on_overflow */
808 ppc_elf_unhandled_reloc, /* special_function */
809 "R_PPC_DTPMOD32", /* name */
810 FALSE, /* partial_inplace */
812 0xffffffff, /* dst_mask */
813 FALSE), /* pcrel_offset */
815 /* Computes a dtv-relative displacement, the difference between the value
816 of sym+add and the base address of the thread-local storage block that
817 contains the definition of sym, minus 0x8000. */
818 HOWTO (R_PPC_DTPREL32,
820 2, /* size (0 = byte, 1 = short, 2 = long) */
822 FALSE, /* pc_relative */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPREL32", /* name */
827 FALSE, /* partial_inplace */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
832 /* A 16 bit dtprel reloc. */
833 HOWTO (R_PPC_DTPREL16,
835 1, /* size (0 = byte, 1 = short, 2 = long) */
837 FALSE, /* pc_relative */
839 complain_overflow_signed, /* complain_on_overflow */
840 ppc_elf_unhandled_reloc, /* special_function */
841 "R_PPC_DTPREL16", /* name */
842 FALSE, /* partial_inplace */
844 0xffff, /* dst_mask */
845 FALSE), /* pcrel_offset */
847 /* Like DTPREL16, but no overflow. */
848 HOWTO (R_PPC_DTPREL16_LO,
850 1, /* size (0 = byte, 1 = short, 2 = long) */
852 FALSE, /* pc_relative */
854 complain_overflow_dont, /* complain_on_overflow */
855 ppc_elf_unhandled_reloc, /* special_function */
856 "R_PPC_DTPREL16_LO", /* name */
857 FALSE, /* partial_inplace */
859 0xffff, /* dst_mask */
860 FALSE), /* pcrel_offset */
862 /* Like DTPREL16_LO, but next higher group of 16 bits. */
863 HOWTO (R_PPC_DTPREL16_HI,
865 1, /* size (0 = byte, 1 = short, 2 = long) */
867 FALSE, /* pc_relative */
869 complain_overflow_dont, /* complain_on_overflow */
870 ppc_elf_unhandled_reloc, /* special_function */
871 "R_PPC_DTPREL16_HI", /* name */
872 FALSE, /* partial_inplace */
874 0xffff, /* dst_mask */
875 FALSE), /* pcrel_offset */
877 /* Like DTPREL16_HI, but adjust for low 16 bits. */
878 HOWTO (R_PPC_DTPREL16_HA,
880 1, /* size (0 = byte, 1 = short, 2 = long) */
882 FALSE, /* pc_relative */
884 complain_overflow_dont, /* complain_on_overflow */
885 ppc_elf_unhandled_reloc, /* special_function */
886 "R_PPC_DTPREL16_HA", /* name */
887 FALSE, /* partial_inplace */
889 0xffff, /* dst_mask */
890 FALSE), /* pcrel_offset */
892 /* Computes a tp-relative displacement, the difference between the value of
893 sym+add and the value of the thread pointer (r13). */
894 HOWTO (R_PPC_TPREL32,
896 2, /* size (0 = byte, 1 = short, 2 = long) */
898 FALSE, /* pc_relative */
900 complain_overflow_dont, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc, /* special_function */
902 "R_PPC_TPREL32", /* name */
903 FALSE, /* partial_inplace */
905 0xffffffff, /* dst_mask */
906 FALSE), /* pcrel_offset */
908 /* A 16 bit tprel reloc. */
909 HOWTO (R_PPC_TPREL16,
911 1, /* size (0 = byte, 1 = short, 2 = long) */
913 FALSE, /* pc_relative */
915 complain_overflow_signed, /* complain_on_overflow */
916 ppc_elf_unhandled_reloc, /* special_function */
917 "R_PPC_TPREL16", /* name */
918 FALSE, /* partial_inplace */
920 0xffff, /* dst_mask */
921 FALSE), /* pcrel_offset */
923 /* Like TPREL16, but no overflow. */
924 HOWTO (R_PPC_TPREL16_LO,
926 1, /* size (0 = byte, 1 = short, 2 = long) */
928 FALSE, /* pc_relative */
930 complain_overflow_dont, /* complain_on_overflow */
931 ppc_elf_unhandled_reloc, /* special_function */
932 "R_PPC_TPREL16_LO", /* name */
933 FALSE, /* partial_inplace */
935 0xffff, /* dst_mask */
936 FALSE), /* pcrel_offset */
938 /* Like TPREL16_LO, but next higher group of 16 bits. */
939 HOWTO (R_PPC_TPREL16_HI,
941 1, /* size (0 = byte, 1 = short, 2 = long) */
943 FALSE, /* pc_relative */
945 complain_overflow_dont, /* complain_on_overflow */
946 ppc_elf_unhandled_reloc, /* special_function */
947 "R_PPC_TPREL16_HI", /* name */
948 FALSE, /* partial_inplace */
950 0xffff, /* dst_mask */
951 FALSE), /* pcrel_offset */
953 /* Like TPREL16_HI, but adjust for low 16 bits. */
954 HOWTO (R_PPC_TPREL16_HA,
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE, /* pc_relative */
960 complain_overflow_dont, /* complain_on_overflow */
961 ppc_elf_unhandled_reloc, /* special_function */
962 "R_PPC_TPREL16_HA", /* name */
963 FALSE, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
968 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
969 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
970 to the first entry. */
971 HOWTO (R_PPC_GOT_TLSGD16,
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_signed, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_GOT_TLSGD16", /* name */
980 FALSE, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* Like GOT_TLSGD16, but no overflow. */
986 HOWTO (R_PPC_GOT_TLSGD16_LO,
988 1, /* size (0 = byte, 1 = short, 2 = long) */
990 FALSE, /* pc_relative */
992 complain_overflow_dont, /* complain_on_overflow */
993 ppc_elf_unhandled_reloc, /* special_function */
994 "R_PPC_GOT_TLSGD16_LO", /* name */
995 FALSE, /* partial_inplace */
997 0xffff, /* dst_mask */
998 FALSE), /* pcrel_offset */
1000 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1001 HOWTO (R_PPC_GOT_TLSGD16_HI,
1002 16, /* rightshift */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1005 FALSE, /* pc_relative */
1007 complain_overflow_dont, /* complain_on_overflow */
1008 ppc_elf_unhandled_reloc, /* special_function */
1009 "R_PPC_GOT_TLSGD16_HI", /* name */
1010 FALSE, /* partial_inplace */
1012 0xffff, /* dst_mask */
1013 FALSE), /* pcrel_offset */
1015 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1016 HOWTO (R_PPC_GOT_TLSGD16_HA,
1017 16, /* rightshift */
1018 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 FALSE, /* pc_relative */
1022 complain_overflow_dont, /* complain_on_overflow */
1023 ppc_elf_unhandled_reloc, /* special_function */
1024 "R_PPC_GOT_TLSGD16_HA", /* name */
1025 FALSE, /* partial_inplace */
1027 0xffff, /* dst_mask */
1028 FALSE), /* pcrel_offset */
1030 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1031 with values (sym+add)@dtpmod and zero, and computes the offset to the
1033 HOWTO (R_PPC_GOT_TLSLD16,
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 FALSE, /* pc_relative */
1039 complain_overflow_signed, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSLD16", /* name */
1042 FALSE, /* partial_inplace */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1047 /* Like GOT_TLSLD16, but no overflow. */
1048 HOWTO (R_PPC_GOT_TLSLD16_LO,
1050 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 FALSE, /* pc_relative */
1054 complain_overflow_dont, /* complain_on_overflow */
1055 ppc_elf_unhandled_reloc, /* special_function */
1056 "R_PPC_GOT_TLSLD16_LO", /* name */
1057 FALSE, /* partial_inplace */
1059 0xffff, /* dst_mask */
1060 FALSE), /* pcrel_offset */
1062 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1063 HOWTO (R_PPC_GOT_TLSLD16_HI,
1064 16, /* rightshift */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 FALSE, /* pc_relative */
1069 complain_overflow_dont, /* complain_on_overflow */
1070 ppc_elf_unhandled_reloc, /* special_function */
1071 "R_PPC_GOT_TLSLD16_HI", /* name */
1072 FALSE, /* partial_inplace */
1074 0xffff, /* dst_mask */
1075 FALSE), /* pcrel_offset */
1077 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1078 HOWTO (R_PPC_GOT_TLSLD16_HA,
1079 16, /* rightshift */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 FALSE, /* pc_relative */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 ppc_elf_unhandled_reloc, /* special_function */
1086 "R_PPC_GOT_TLSLD16_HA", /* name */
1087 FALSE, /* partial_inplace */
1089 0xffff, /* dst_mask */
1090 FALSE), /* pcrel_offset */
1092 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1093 the offset to the entry. */
1094 HOWTO (R_PPC_GOT_DTPREL16,
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE, /* pc_relative */
1100 complain_overflow_signed, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc, /* special_function */
1102 "R_PPC_GOT_DTPREL16", /* name */
1103 FALSE, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE), /* pcrel_offset */
1108 /* Like GOT_DTPREL16, but no overflow. */
1109 HOWTO (R_PPC_GOT_DTPREL16_LO,
1111 1, /* size (0 = byte, 1 = short, 2 = long) */
1113 FALSE, /* pc_relative */
1115 complain_overflow_dont, /* complain_on_overflow */
1116 ppc_elf_unhandled_reloc, /* special_function */
1117 "R_PPC_GOT_DTPREL16_LO", /* name */
1118 FALSE, /* partial_inplace */
1120 0xffff, /* dst_mask */
1121 FALSE), /* pcrel_offset */
1123 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1124 HOWTO (R_PPC_GOT_DTPREL16_HI,
1125 16, /* rightshift */
1126 1, /* size (0 = byte, 1 = short, 2 = long) */
1128 FALSE, /* pc_relative */
1130 complain_overflow_dont, /* complain_on_overflow */
1131 ppc_elf_unhandled_reloc, /* special_function */
1132 "R_PPC_GOT_DTPREL16_HI", /* name */
1133 FALSE, /* partial_inplace */
1135 0xffff, /* dst_mask */
1136 FALSE), /* pcrel_offset */
1138 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1139 HOWTO (R_PPC_GOT_DTPREL16_HA,
1140 16, /* rightshift */
1141 1, /* size (0 = byte, 1 = short, 2 = long) */
1143 FALSE, /* pc_relative */
1145 complain_overflow_dont, /* complain_on_overflow */
1146 ppc_elf_unhandled_reloc, /* special_function */
1147 "R_PPC_GOT_DTPREL16_HA", /* name */
1148 FALSE, /* partial_inplace */
1150 0xffff, /* dst_mask */
1151 FALSE), /* pcrel_offset */
1153 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1154 offset to the entry. */
1155 HOWTO (R_PPC_GOT_TPREL16,
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 FALSE, /* pc_relative */
1161 complain_overflow_signed, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc, /* special_function */
1163 "R_PPC_GOT_TPREL16", /* name */
1164 FALSE, /* partial_inplace */
1166 0xffff, /* dst_mask */
1167 FALSE), /* pcrel_offset */
1169 /* Like GOT_TPREL16, but no overflow. */
1170 HOWTO (R_PPC_GOT_TPREL16_LO,
1172 1, /* size (0 = byte, 1 = short, 2 = long) */
1174 FALSE, /* pc_relative */
1176 complain_overflow_dont, /* complain_on_overflow */
1177 ppc_elf_unhandled_reloc, /* special_function */
1178 "R_PPC_GOT_TPREL16_LO", /* name */
1179 FALSE, /* partial_inplace */
1181 0xffff, /* dst_mask */
1182 FALSE), /* pcrel_offset */
1184 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1185 HOWTO (R_PPC_GOT_TPREL16_HI,
1186 16, /* rightshift */
1187 1, /* size (0 = byte, 1 = short, 2 = long) */
1189 FALSE, /* pc_relative */
1191 complain_overflow_dont, /* complain_on_overflow */
1192 ppc_elf_unhandled_reloc, /* special_function */
1193 "R_PPC_GOT_TPREL16_HI", /* name */
1194 FALSE, /* partial_inplace */
1196 0xffff, /* dst_mask */
1197 FALSE), /* pcrel_offset */
1199 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1200 HOWTO (R_PPC_GOT_TPREL16_HA,
1201 16, /* rightshift */
1202 1, /* size (0 = byte, 1 = short, 2 = long) */
1204 FALSE, /* pc_relative */
1206 complain_overflow_dont, /* complain_on_overflow */
1207 ppc_elf_unhandled_reloc, /* special_function */
1208 "R_PPC_GOT_TPREL16_HA", /* name */
1209 FALSE, /* partial_inplace */
1211 0xffff, /* dst_mask */
1212 FALSE), /* pcrel_offset */
1214 /* The remaining relocs are from the Embedded ELF ABI, and are not
1215 in the SVR4 ELF ABI. */
1217 /* 32 bit value resulting from the addend minus the symbol. */
1218 HOWTO (R_PPC_EMB_NADDR32, /* type */
1220 2, /* size (0 = byte, 1 = short, 2 = long) */
1222 FALSE, /* pc_relative */
1224 complain_overflow_bitfield, /* complain_on_overflow */
1225 bfd_elf_generic_reloc, /* special_function */
1226 "R_PPC_EMB_NADDR32", /* name */
1227 FALSE, /* partial_inplace */
1229 0xffffffff, /* dst_mask */
1230 FALSE), /* pcrel_offset */
1232 /* 16 bit value resulting from the addend minus the symbol. */
1233 HOWTO (R_PPC_EMB_NADDR16, /* type */
1235 1, /* size (0 = byte, 1 = short, 2 = long) */
1237 FALSE, /* pc_relative */
1239 complain_overflow_bitfield, /* complain_on_overflow */
1240 bfd_elf_generic_reloc, /* special_function */
1241 "R_PPC_EMB_NADDR16", /* name */
1242 FALSE, /* partial_inplace */
1244 0xffff, /* dst_mask */
1245 FALSE), /* pcrel_offset */
1247 /* 16 bit value resulting from the addend minus the symbol. */
1248 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 FALSE, /* pc_relative */
1254 complain_overflow_dont,/* complain_on_overflow */
1255 bfd_elf_generic_reloc, /* special_function */
1256 "R_PPC_EMB_ADDR16_LO", /* name */
1257 FALSE, /* partial_inplace */
1259 0xffff, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1262 /* The high order 16 bits of the addend minus the symbol. */
1263 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1264 16, /* rightshift */
1265 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE, /* pc_relative */
1269 complain_overflow_dont, /* complain_on_overflow */
1270 bfd_elf_generic_reloc, /* special_function */
1271 "R_PPC_EMB_NADDR16_HI", /* name */
1272 FALSE, /* partial_inplace */
1274 0xffff, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1277 /* The high order 16 bits of the result of the addend minus the address,
1278 plus 1 if the contents of the low 16 bits, treated as a signed number,
1280 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE, /* pc_relative */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 ppc_elf_addr16_ha_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HA", /* name */
1289 FALSE, /* partial_inplace */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1294 /* 16 bit value resulting from allocating a 4 byte word to hold an
1295 address in the .sdata section, and returning the offset from
1296 _SDA_BASE_ for that relocation. */
1297 HOWTO (R_PPC_EMB_SDAI16, /* type */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_bitfield, /* complain_on_overflow */
1304 bfd_elf_generic_reloc, /* special_function */
1305 "R_PPC_EMB_SDAI16", /* name */
1306 FALSE, /* partial_inplace */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata2 section, and returning the offset from
1313 _SDA2_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1318 FALSE, /* pc_relative */
1320 complain_overflow_bitfield, /* complain_on_overflow */
1321 bfd_elf_generic_reloc, /* special_function */
1322 "R_PPC_EMB_SDA2I16", /* name */
1323 FALSE, /* partial_inplace */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1328 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1329 small data items. */
1330 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 FALSE, /* pc_relative */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 bfd_elf_generic_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2REL", /* name */
1339 FALSE, /* partial_inplace */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1344 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1345 signed offset from the appropriate base, and filling in the register
1346 field with the appropriate register (0, 2, or 13). */
1347 HOWTO (R_PPC_EMB_SDA21, /* type */
1349 2, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE, /* pc_relative */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 bfd_elf_generic_reloc, /* special_function */
1355 "R_PPC_EMB_SDA21", /* name */
1356 FALSE, /* partial_inplace */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1361 /* Relocation not handled: R_PPC_EMB_MRKREF */
1362 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1363 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1364 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1365 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1366 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1368 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1369 in the 16 bit signed offset from the appropriate base, and filling in the
1370 register field with the appropriate register (0, 2, or 13). */
1371 HOWTO (R_PPC_EMB_RELSDA, /* type */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 TRUE, /* pc_relative */
1377 complain_overflow_signed, /* complain_on_overflow */
1378 bfd_elf_generic_reloc, /* special_function */
1379 "R_PPC_EMB_RELSDA", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 /* A 16 bit relative relocation. */
1386 HOWTO (R_PPC_REL16, /* type */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 TRUE, /* pc_relative */
1392 complain_overflow_bitfield, /* complain_on_overflow */
1393 bfd_elf_generic_reloc, /* special_function */
1394 "R_PPC_REL16", /* name */
1395 FALSE, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 TRUE), /* pcrel_offset */
1400 /* A 16 bit relative relocation without overflow. */
1401 HOWTO (R_PPC_REL16_LO, /* type */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 TRUE, /* pc_relative */
1407 complain_overflow_dont,/* complain_on_overflow */
1408 bfd_elf_generic_reloc, /* special_function */
1409 "R_PPC_REL16_LO", /* name */
1410 FALSE, /* partial_inplace */
1412 0xffff, /* dst_mask */
1413 TRUE), /* pcrel_offset */
1415 /* The high order 16 bits of a relative address. */
1416 HOWTO (R_PPC_REL16_HI, /* type */
1417 16, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 TRUE, /* pc_relative */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 bfd_elf_generic_reloc, /* special_function */
1424 "R_PPC_REL16_HI", /* name */
1425 FALSE, /* partial_inplace */
1427 0xffff, /* dst_mask */
1428 TRUE), /* pcrel_offset */
1430 /* The high order 16 bits of a relative address, plus 1 if the contents of
1431 the low 16 bits, treated as a signed number, is negative. */
1432 HOWTO (R_PPC_REL16_HA, /* type */
1433 16, /* rightshift */
1434 1, /* size (0 = byte, 1 = short, 2 = long) */
1436 TRUE, /* pc_relative */
1438 complain_overflow_dont, /* complain_on_overflow */
1439 ppc_elf_addr16_ha_reloc, /* special_function */
1440 "R_PPC_REL16_HA", /* name */
1441 FALSE, /* partial_inplace */
1443 0xffff, /* dst_mask */
1444 TRUE), /* pcrel_offset */
1446 /* GNU extension to record C++ vtable hierarchy. */
1447 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1449 0, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE, /* pc_relative */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 NULL, /* special_function */
1455 "R_PPC_GNU_VTINHERIT", /* name */
1456 FALSE, /* partial_inplace */
1459 FALSE), /* pcrel_offset */
1461 /* GNU extension to record C++ vtable member usage. */
1462 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1464 0, /* size (0 = byte, 1 = short, 2 = long) */
1466 FALSE, /* pc_relative */
1468 complain_overflow_dont, /* complain_on_overflow */
1469 NULL, /* special_function */
1470 "R_PPC_GNU_VTENTRY", /* name */
1471 FALSE, /* partial_inplace */
1474 FALSE), /* pcrel_offset */
1476 /* Phony reloc to handle AIX style TOC entries. */
1477 HOWTO (R_PPC_TOC16, /* type */
1479 1, /* size (0 = byte, 1 = short, 2 = long) */
1481 FALSE, /* pc_relative */
1483 complain_overflow_signed, /* complain_on_overflow */
1484 bfd_elf_generic_reloc, /* special_function */
1485 "R_PPC_TOC16", /* name */
1486 FALSE, /* partial_inplace */
1488 0xffff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
1492 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1495 ppc_elf_howto_init (void)
1497 unsigned int i, type;
1500 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1503 type = ppc_elf_howto_raw[i].type;
1504 if (type >= (sizeof (ppc_elf_howto_table)
1505 / sizeof (ppc_elf_howto_table[0])))
1507 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1511 static reloc_howto_type *
1512 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1513 bfd_reloc_code_real_type code)
1515 enum elf_ppc_reloc_type r;
1517 /* Initialize howto table if not already done. */
1518 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1519 ppc_elf_howto_init ();
1526 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1527 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1528 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1529 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1530 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1531 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1532 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1533 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1534 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1535 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1536 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1537 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1538 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1539 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1540 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1541 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1542 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1543 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1544 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1545 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1546 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1547 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1548 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1549 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1550 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1551 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1552 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1553 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1554 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1555 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1556 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1557 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1558 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1559 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1560 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1561 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1562 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1563 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1564 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1565 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1566 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1567 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1568 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1569 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1570 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1571 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1572 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1573 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1574 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1575 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1576 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1577 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1578 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1579 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1580 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1581 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1582 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1583 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1584 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1585 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1586 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1587 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1588 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1589 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1590 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1591 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1592 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1593 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1594 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1595 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1596 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1597 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1598 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1599 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1600 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1601 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1602 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1603 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1604 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1605 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1606 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1607 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1608 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1609 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1610 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1611 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1612 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1615 return ppc_elf_howto_table[r];
1618 static reloc_howto_type *
1619 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1625 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1627 if (ppc_elf_howto_raw[i].name != NULL
1628 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1629 return &ppc_elf_howto_raw[i];
1634 /* Set the howto pointer for a PowerPC ELF reloc. */
1637 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1639 Elf_Internal_Rela *dst)
1641 /* Initialize howto table if not already done. */
1642 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1643 ppc_elf_howto_init ();
1645 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1646 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1648 /* Just because the above assert didn't trigger doesn't mean that
1649 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1650 if (!cache_ptr->howto)
1652 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1653 abfd, ELF32_R_TYPE (dst->r_info));
1654 bfd_set_error (bfd_error_bad_value);
1656 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1660 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1662 static bfd_reloc_status_type
1663 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1664 arelent *reloc_entry,
1666 void *data ATTRIBUTE_UNUSED,
1667 asection *input_section,
1669 char **error_message ATTRIBUTE_UNUSED)
1673 if (output_bfd != NULL)
1675 reloc_entry->address += input_section->output_offset;
1676 return bfd_reloc_ok;
1679 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1680 return bfd_reloc_outofrange;
1682 if (bfd_is_com_section (symbol->section))
1685 relocation = symbol->value;
1687 relocation += symbol->section->output_section->vma;
1688 relocation += symbol->section->output_offset;
1689 relocation += reloc_entry->addend;
1690 if (reloc_entry->howto->pc_relative)
1691 relocation -= reloc_entry->address;
1693 reloc_entry->addend += (relocation & 0x8000) << 1;
1695 return bfd_reloc_continue;
1698 static bfd_reloc_status_type
1699 ppc_elf_unhandled_reloc (bfd *abfd,
1700 arelent *reloc_entry,
1703 asection *input_section,
1705 char **error_message)
1707 /* If this is a relocatable link (output_bfd test tells us), just
1708 call the generic function. Any adjustment will be done at final
1710 if (output_bfd != NULL)
1711 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1712 input_section, output_bfd, error_message);
1714 if (error_message != NULL)
1716 static char buf[60];
1717 sprintf (buf, _("generic linker can't handle %s"),
1718 reloc_entry->howto->name);
1719 *error_message = buf;
1721 return bfd_reloc_dangerous;
1724 /* Sections created by the linker. */
1726 typedef struct elf_linker_section
1728 /* Pointer to the bfd section. */
1732 /* Associated bss section name. */
1733 const char *bss_name;
1734 /* Associated symbol name. */
1735 const char *sym_name;
1736 /* Associated symbol. */
1737 struct elf_link_hash_entry *sym;
1738 } elf_linker_section_t;
1740 /* Linked list of allocated pointer entries. This hangs off of the
1741 symbol lists, and provides allows us to return different pointers,
1742 based on different addend's. */
1744 typedef struct elf_linker_section_pointers
1746 /* next allocated pointer for this symbol */
1747 struct elf_linker_section_pointers *next;
1748 /* offset of pointer from beginning of section */
1752 /* which linker section this is */
1753 elf_linker_section_t *lsect;
1754 } elf_linker_section_pointers_t;
1756 struct ppc_elf_obj_tdata
1758 struct elf_obj_tdata elf;
1760 /* A mapping from local symbols to offsets into the various linker
1761 sections added. This is index by the symbol index. */
1762 elf_linker_section_pointers_t **linker_section_pointers;
1764 /* Flags used to auto-detect plt type. */
1765 unsigned int makes_plt_call : 1;
1766 unsigned int has_rel16 : 1;
1769 #define ppc_elf_tdata(bfd) \
1770 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1772 #define elf_local_ptr_offsets(bfd) \
1773 (ppc_elf_tdata (bfd)->linker_section_pointers)
1775 #define is_ppc_elf(bfd) \
1776 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1777 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1779 /* Override the generic function because we store some extras. */
1782 ppc_elf_mkobject (bfd *abfd)
1784 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1788 /* Fix bad default arch selected for a 32 bit input bfd when the
1789 default is 64 bit. */
1792 ppc_elf_object_p (bfd *abfd)
1794 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1796 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1798 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1800 /* Relies on arch after 64 bit default being 32 bit default. */
1801 abfd->arch_info = abfd->arch_info->next;
1802 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1808 /* Function to set whether a module needs the -mrelocatable bit set. */
1811 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1813 BFD_ASSERT (!elf_flags_init (abfd)
1814 || elf_elfheader (abfd)->e_flags == flags);
1816 elf_elfheader (abfd)->e_flags = flags;
1817 elf_flags_init (abfd) = TRUE;
1821 /* Support for core dump NOTE sections. */
1824 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1829 switch (note->descsz)
1834 case 268: /* Linux/PPC. */
1836 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1839 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1848 /* Make a ".reg/999" section. */
1849 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1850 size, note->descpos + offset);
1854 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1856 switch (note->descsz)
1861 case 128: /* Linux/PPC elf_prpsinfo. */
1862 elf_tdata (abfd)->core_program
1863 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1864 elf_tdata (abfd)->core_command
1865 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1868 /* Note that for some reason, a spurious space is tacked
1869 onto the end of the args in some (at least one anyway)
1870 implementations, so strip it off if it exists. */
1873 char *command = elf_tdata (abfd)->core_command;
1874 int n = strlen (command);
1876 if (0 < n && command[n - 1] == ' ')
1877 command[n - 1] = '\0';
1884 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1896 va_start (ap, note_type);
1897 memset (data, 0, 32);
1898 strncpy (data + 32, va_arg (ap, const char *), 16);
1899 strncpy (data + 48, va_arg (ap, const char *), 80);
1901 return elfcore_write_note (abfd, buf, bufsiz,
1902 "CORE", note_type, data, sizeof (data));
1913 va_start (ap, note_type);
1914 memset (data, 0, 72);
1915 pid = va_arg (ap, long);
1916 bfd_put_32 (abfd, pid, data + 24);
1917 cursig = va_arg (ap, int);
1918 bfd_put_16 (abfd, cursig, data + 12);
1919 greg = va_arg (ap, const void *);
1920 memcpy (data + 72, greg, 192);
1921 memset (data + 264, 0, 4);
1923 return elfcore_write_note (abfd, buf, bufsiz,
1924 "CORE", note_type, data, sizeof (data));
1929 /* Return address for Ith PLT stub in section PLT, for relocation REL
1930 or (bfd_vma) -1 if it should not be included. */
1933 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1934 const asection *plt ATTRIBUTE_UNUSED,
1937 return rel->address;
1940 /* Handle a PowerPC specific section when reading an object file. This
1941 is called when bfd_section_from_shdr finds a section with an unknown
1945 ppc_elf_section_from_shdr (bfd *abfd,
1946 Elf_Internal_Shdr *hdr,
1953 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1956 newsect = hdr->bfd_section;
1957 flags = bfd_get_section_flags (abfd, newsect);
1958 if (hdr->sh_flags & SHF_EXCLUDE)
1959 flags |= SEC_EXCLUDE;
1961 if (hdr->sh_type == SHT_ORDERED)
1962 flags |= SEC_SORT_ENTRIES;
1964 bfd_set_section_flags (abfd, newsect, flags);
1968 /* Set up any other section flags and such that may be necessary. */
1971 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1972 Elf_Internal_Shdr *shdr,
1975 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1976 shdr->sh_flags |= SHF_EXCLUDE;
1978 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1979 shdr->sh_type = SHT_ORDERED;
1984 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1985 need to bump up the number of section headers. */
1988 ppc_elf_additional_program_headers (bfd *abfd,
1989 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1994 s = bfd_get_section_by_name (abfd, ".sbss2");
1995 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1998 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1999 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2005 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2006 .PPC.EMB.sbss0 a normal section, and not a bss section so
2007 that the linker doesn't crater when trying to make more than
2010 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2012 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2013 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2014 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2015 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2016 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2017 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2018 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2019 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2020 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2021 { NULL, 0, 0, 0, 0 }
2024 /* This is what we want for new plt/got. */
2025 static struct bfd_elf_special_section ppc_alt_plt =
2026 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2028 static const struct bfd_elf_special_section *
2029 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2031 const struct bfd_elf_special_section *ssect;
2033 /* See if this is one of the special sections. */
2034 if (sec->name == NULL)
2037 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2041 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2042 ssect = &ppc_alt_plt;
2046 return _bfd_elf_get_sec_type_attr (abfd, sec);
2049 /* Very simple linked list structure for recording apuinfo values. */
2050 typedef struct apuinfo_list
2052 struct apuinfo_list *next;
2053 unsigned long value;
2057 static apuinfo_list *head;
2061 apuinfo_list_init (void)
2067 apuinfo_list_add (unsigned long value)
2069 apuinfo_list *entry = head;
2071 while (entry != NULL)
2073 if (entry->value == value)
2075 entry = entry->next;
2078 entry = bfd_malloc (sizeof (* entry));
2082 entry->value = value;
2088 apuinfo_list_length (void)
2090 apuinfo_list *entry;
2091 unsigned long count;
2093 for (entry = head, count = 0;
2095 entry = entry->next)
2101 static inline unsigned long
2102 apuinfo_list_element (unsigned long number)
2104 apuinfo_list * entry;
2108 entry = entry->next)
2111 return entry ? entry->value : 0;
2115 apuinfo_list_finish (void)
2117 apuinfo_list *entry;
2119 for (entry = head; entry;)
2121 apuinfo_list *next = entry->next;
2129 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2130 #define APUINFO_LABEL "APUinfo"
2132 /* Scan the input BFDs and create a linked list of
2133 the APUinfo values that will need to be emitted. */
2136 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2141 unsigned num_input_sections;
2142 bfd_size_type output_section_size;
2144 unsigned num_entries;
2145 unsigned long offset;
2146 unsigned long length;
2147 const char *error_message = NULL;
2149 if (link_info == NULL)
2152 /* Scan the input bfds, looking for apuinfo sections. */
2153 num_input_sections = 0;
2154 output_section_size = 0;
2156 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2158 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2161 ++ num_input_sections;
2162 output_section_size += asec->size;
2166 /* We need at least one input sections
2167 in order to make merging worthwhile. */
2168 if (num_input_sections < 1)
2171 /* Just make sure that the output section exists as well. */
2172 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2176 /* Allocate a buffer for the contents of the input sections. */
2177 buffer = bfd_malloc (output_section_size);
2182 apuinfo_list_init ();
2184 /* Read in the input sections contents. */
2185 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2187 unsigned long datum;
2190 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2194 length = asec->size;
2197 error_message = _("corrupt or empty %s section in %B");
2201 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2202 || (bfd_bread (buffer + offset, length, ibfd) != length))
2204 error_message = _("unable to read in %s section from %B");
2208 /* Process the contents of the section. */
2209 ptr = buffer + offset;
2210 error_message = _("corrupt %s section in %B");
2212 /* Verify the contents of the header. Note - we have to
2213 extract the values this way in order to allow for a
2214 host whose endian-ness is different from the target. */
2215 datum = bfd_get_32 (ibfd, ptr);
2216 if (datum != sizeof APUINFO_LABEL)
2219 datum = bfd_get_32 (ibfd, ptr + 8);
2223 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2226 /* Get the number of bytes used for apuinfo entries. */
2227 datum = bfd_get_32 (ibfd, ptr + 4);
2228 if (datum + 20 != length)
2231 /* Make sure that we do not run off the end of the section. */
2232 if (offset + length > output_section_size)
2235 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2236 for (i = 0; i < datum; i += 4)
2237 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2239 /* Update the offset. */
2243 error_message = NULL;
2245 /* Compute the size of the output section. */
2246 num_entries = apuinfo_list_length ();
2247 output_section_size = 20 + num_entries * 4;
2249 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2251 if (! bfd_set_section_size (abfd, asec, output_section_size))
2253 error_message = _("warning: unable to set size of %s section in %B");
2259 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2262 /* Prevent the output section from accumulating the input sections'
2263 contents. We have already stored this in our linked list structure. */
2266 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2267 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2269 bfd_byte *contents ATTRIBUTE_UNUSED)
2271 return (apuinfo_list_length ()
2272 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2275 /* Finally we can generate the output section. */
2278 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2283 unsigned num_entries;
2284 bfd_size_type length;
2286 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2290 if (apuinfo_list_length () == 0)
2293 length = asec->size;
2297 buffer = bfd_malloc (length);
2300 (*_bfd_error_handler)
2301 (_("failed to allocate space for new APUinfo section."));
2305 /* Create the apuinfo header. */
2306 num_entries = apuinfo_list_length ();
2307 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2308 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2309 bfd_put_32 (abfd, 0x2, buffer + 8);
2310 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2313 for (i = 0; i < num_entries; i++)
2315 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2319 if (length != asec->size)
2320 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2322 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2323 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2327 apuinfo_list_finish ();
2331 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2333 bfd_byte buf[GLINK_ENTRY_SIZE];
2335 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2338 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2339 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2340 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2341 && bfd_get_32 (abfd, buf + 12) == BCTR);
2345 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2347 bfd_vma vma = *(bfd_vma *) ptr;
2348 return ((section->flags & SEC_ALLOC) != 0
2349 && section->vma <= vma
2350 && vma < section->vma + section->size);
2354 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2355 long dynsymcount, asymbol **dynsyms,
2358 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2359 asection *plt, *relplt, *dynamic, *glink;
2360 bfd_vma glink_vma = 0;
2361 bfd_vma resolv_vma = 0;
2372 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2375 if (dynsymcount <= 0)
2378 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2382 plt = bfd_get_section_by_name (abfd, ".plt");
2386 /* Call common code to handle old-style executable PLTs. */
2387 if (elf_section_flags (plt) & SHF_EXECINSTR)
2388 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2389 dynsymcount, dynsyms, ret);
2391 /* If this object was prelinked, the prelinker stored the address
2392 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2393 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2394 if (dynamic != NULL)
2396 bfd_byte *dynbuf, *extdyn, *extdynend;
2398 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2400 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2403 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2404 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2407 extdynend = extdyn + dynamic->size;
2408 for (; extdyn < extdynend; extdyn += extdynsize)
2410 Elf_Internal_Dyn dyn;
2411 (*swap_dyn_in) (abfd, extdyn, &dyn);
2413 if (dyn.d_tag == DT_NULL)
2416 if (dyn.d_tag == DT_PPC_GOT)
2418 unsigned int g_o_t = dyn.d_un.d_val;
2419 asection *got = bfd_get_section_by_name (abfd, ".got");
2421 && bfd_get_section_contents (abfd, got, buf,
2422 g_o_t - got->vma + 4, 4))
2423 glink_vma = bfd_get_32 (abfd, buf);
2430 /* Otherwise we read the first plt entry. */
2433 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2434 glink_vma = bfd_get_32 (abfd, buf);
2440 /* The .glink section usually does not survive the final
2441 link; search for the section (usually .text) where the
2442 glink stubs now reside. */
2443 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2447 /* Determine glink PLT resolver by reading the relative branch
2448 from the first glink stub. */
2449 if (bfd_get_section_contents (abfd, glink, buf,
2450 glink_vma - glink->vma, 4))
2452 unsigned int insn = bfd_get_32 (abfd, buf);
2454 /* The first glink stub may either branch to the resolver ... */
2456 if ((insn & ~0x3fffffc) == 0)
2457 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2459 /* ... or fall through a bunch of NOPs. */
2460 else if ((insn ^ B ^ NOP) == 0)
2462 bfd_get_section_contents (abfd, glink, buf,
2463 glink_vma - glink->vma + i, 4);
2465 if (bfd_get_32 (abfd, buf) != NOP)
2467 resolv_vma = glink_vma + i;
2472 count = relplt->size / sizeof (Elf32_External_Rela);
2473 stub_vma = glink_vma - (bfd_vma) count * 16;
2474 /* If the stubs are those for -shared/-pie then we might have
2475 multiple stubs for each plt entry. If that is the case then
2476 there is no way to associate stubs with their plt entries short
2477 of figuring out the GOT pointer value used in the stub. */
2478 if (!is_nonpic_glink_stub (abfd, glink,
2479 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2482 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2483 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2486 size = count * sizeof (asymbol);
2487 p = relplt->relocation;
2488 for (i = 0; i < count; i++, p++)
2489 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2491 size += sizeof (asymbol) + sizeof ("__glink");
2494 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2496 s = *ret = bfd_malloc (size);
2500 names = (char *) (s + count + 1 + (resolv_vma != 0));
2501 p = relplt->relocation;
2502 for (i = 0; i < count; i++, p++)
2506 *s = **p->sym_ptr_ptr;
2507 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2508 we are defining a symbol, ensure one of them is set. */
2509 if ((s->flags & BSF_LOCAL) == 0)
2510 s->flags |= BSF_GLOBAL;
2511 s->flags |= BSF_SYNTHETIC;
2513 s->value = stub_vma - glink->vma;
2516 len = strlen ((*p->sym_ptr_ptr)->name);
2517 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2519 memcpy (names, "@plt", sizeof ("@plt"));
2520 names += sizeof ("@plt");
2525 /* Add a symbol at the start of the glink branch table. */
2526 memset (s, 0, sizeof *s);
2528 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2530 s->value = glink_vma - glink->vma;
2532 memcpy (names, "__glink", sizeof ("__glink"));
2533 names += sizeof ("__glink");
2539 /* Add a symbol for the glink PLT resolver. */
2540 memset (s, 0, sizeof *s);
2542 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2544 s->value = resolv_vma - glink->vma;
2546 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2547 names += sizeof ("__glink_PLTresolve");
2555 /* The following functions are specific to the ELF linker, while
2556 functions above are used generally. They appear in this file more
2557 or less in the order in which they are called. eg.
2558 ppc_elf_check_relocs is called early in the link process,
2559 ppc_elf_finish_dynamic_sections is one of the last functions
2562 /* The PPC linker needs to keep track of the number of relocs that it
2563 decides to copy as dynamic relocs in check_relocs for each symbol.
2564 This is so that it can later discard them if they are found to be
2565 unnecessary. We store the information in a field extending the
2566 regular ELF linker hash table. */
2568 struct ppc_elf_dyn_relocs
2570 struct ppc_elf_dyn_relocs *next;
2572 /* The input section of the reloc. */
2575 /* Total number of relocs copied for the input section. */
2576 bfd_size_type count;
2578 /* Number of pc-relative relocs copied for the input section. */
2579 bfd_size_type pc_count;
2582 /* Track PLT entries needed for a given symbol. We might need more
2583 than one glink entry per symbol. */
2586 struct plt_entry *next;
2588 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2589 This field stores the offset into .got2 used to initialise the
2590 GOT pointer reg. It will always be at least 32768 (and for
2591 current gcc this is the only offset used). */
2594 /* The .got2 section. */
2597 /* PLT refcount or offset. */
2600 bfd_signed_vma refcount;
2604 /* .glink stub offset. */
2605 bfd_vma glink_offset;
2608 /* Of those relocs that might be copied as dynamic relocs, this function
2609 selects those that must be copied when linking a shared library,
2610 even when the symbol is local. */
2613 must_be_dyn_reloc (struct bfd_link_info *info,
2614 enum elf_ppc_reloc_type r_type)
2623 case R_PPC_REL14_BRTAKEN:
2624 case R_PPC_REL14_BRNTAKEN:
2630 case R_PPC_TPREL16_LO:
2631 case R_PPC_TPREL16_HI:
2632 case R_PPC_TPREL16_HA:
2633 return !info->executable;
2637 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2638 copying dynamic variables from a shared lib into an app's dynbss
2639 section, and instead use a dynamic relocation to point into the
2641 #define ELIMINATE_COPY_RELOCS 1
2643 /* PPC ELF linker hash entry. */
2645 struct ppc_elf_link_hash_entry
2647 struct elf_link_hash_entry elf;
2649 /* If this symbol is used in the linker created sections, the processor
2650 specific backend uses this field to map the field into the offset
2651 from the beginning of the section. */
2652 elf_linker_section_pointers_t *linker_section_pointer;
2654 /* Track dynamic relocs copied for this symbol. */
2655 struct ppc_elf_dyn_relocs *dyn_relocs;
2657 /* Contexts in which symbol is used in the GOT (or TOC).
2658 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2659 corresponding relocs are encountered during check_relocs.
2660 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2661 indicate the corresponding GOT entry type is not needed. */
2662 #define TLS_GD 1 /* GD reloc. */
2663 #define TLS_LD 2 /* LD reloc. */
2664 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2665 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2666 #define TLS_TLS 16 /* Any TLS reloc. */
2667 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2670 /* Nonzero if we have seen a small data relocation referring to this
2672 unsigned char has_sda_refs;
2675 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2677 /* PPC ELF linker hash table. */
2679 struct ppc_elf_link_hash_table
2681 struct elf_link_hash_table elf;
2683 /* Short-cuts to get to dynamic linker sections. */
2693 elf_linker_section_t sdata[2];
2696 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2699 /* The .got.plt section (VxWorks only)*/
2702 /* Shortcut to __tls_get_addr. */
2703 struct elf_link_hash_entry *tls_get_addr;
2705 /* The bfd that forced an old-style PLT. */
2708 /* TLS local dynamic got entry handling. */
2710 bfd_signed_vma refcount;
2714 /* Offset of branch table to PltResolve function in glink. */
2715 bfd_vma glink_pltresolve;
2717 /* Size of reserved GOT entries. */
2718 unsigned int got_header_size;
2719 /* Non-zero if allocating the header left a gap. */
2720 unsigned int got_gap;
2722 /* The type of PLT we have chosen to use. */
2723 enum ppc_elf_plt_type plt_type;
2725 /* Set if we should emit symbols for stubs. */
2726 unsigned int emit_stub_syms:1;
2728 /* True if the target system is VxWorks. */
2729 unsigned int is_vxworks:1;
2731 /* The size of PLT entries. */
2733 /* The distance between adjacent PLT slots. */
2735 /* The size of the first PLT entry. */
2736 int plt_initial_entry_size;
2738 /* Small local sym to section mapping cache. */
2739 struct sym_sec_cache sym_sec;
2742 /* Get the PPC ELF linker hash table from a link_info structure. */
2744 #define ppc_elf_hash_table(p) \
2745 ((struct ppc_elf_link_hash_table *) (p)->hash)
2747 /* Create an entry in a PPC ELF linker hash table. */
2749 static struct bfd_hash_entry *
2750 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2751 struct bfd_hash_table *table,
2754 /* Allocate the structure if it has not already been allocated by a
2758 entry = bfd_hash_allocate (table,
2759 sizeof (struct ppc_elf_link_hash_entry));
2764 /* Call the allocation method of the superclass. */
2765 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2768 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2769 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2770 ppc_elf_hash_entry (entry)->tls_mask = 0;
2776 /* Create a PPC ELF linker hash table. */
2778 static struct bfd_link_hash_table *
2779 ppc_elf_link_hash_table_create (bfd *abfd)
2781 struct ppc_elf_link_hash_table *ret;
2783 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2787 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2788 ppc_elf_link_hash_newfunc,
2789 sizeof (struct ppc_elf_link_hash_entry)))
2795 ret->elf.init_plt_refcount.refcount = 0;
2796 ret->elf.init_plt_refcount.glist = NULL;
2797 ret->elf.init_plt_offset.offset = 0;
2798 ret->elf.init_plt_offset.glist = NULL;
2800 ret->sdata[0].name = ".sdata";
2801 ret->sdata[0].sym_name = "_SDA_BASE_";
2802 ret->sdata[0].bss_name = ".sbss";
2804 ret->sdata[1].name = ".sdata2";
2805 ret->sdata[1].sym_name = "_SDA2_BASE_";
2806 ret->sdata[1].bss_name = ".sbss2";
2808 ret->plt_entry_size = 12;
2809 ret->plt_slot_size = 8;
2810 ret->plt_initial_entry_size = 72;
2812 return &ret->elf.root;
2815 /* Create .got and the related sections. */
2818 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2820 struct ppc_elf_link_hash_table *htab;
2824 if (!_bfd_elf_create_got_section (abfd, info))
2827 htab = ppc_elf_hash_table (info);
2828 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2832 if (htab->is_vxworks)
2834 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2840 /* The powerpc .got has a blrl instruction in it. Mark it
2842 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2843 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2844 if (!bfd_set_section_flags (abfd, s, flags))
2848 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2849 | SEC_LINKER_CREATED | SEC_READONLY);
2850 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2852 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2858 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2859 to output sections (just like _bfd_elf_create_dynamic_sections has
2860 to create .dynbss and .rela.bss). */
2863 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2865 struct ppc_elf_link_hash_table *htab;
2869 htab = ppc_elf_hash_table (info);
2871 if (htab->got == NULL
2872 && !ppc_elf_create_got (abfd, info))
2875 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2878 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2879 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2881 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2884 || !bfd_set_section_alignment (abfd, s, 4))
2887 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2888 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2889 SEC_ALLOC | SEC_LINKER_CREATED);
2896 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2897 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2900 || ! bfd_set_section_alignment (abfd, s, 2))
2904 if (htab->is_vxworks
2905 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2908 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2909 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2913 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2914 if (htab->plt_type == PLT_VXWORKS)
2915 /* The VxWorks PLT is a loaded section with contents. */
2916 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2917 return bfd_set_section_flags (abfd, s, flags);
2920 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2923 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2924 struct elf_link_hash_entry *dir,
2925 struct elf_link_hash_entry *ind)
2927 struct ppc_elf_link_hash_entry *edir, *eind;
2929 edir = (struct ppc_elf_link_hash_entry *) dir;
2930 eind = (struct ppc_elf_link_hash_entry *) ind;
2932 if (eind->dyn_relocs != NULL)
2934 if (edir->dyn_relocs != NULL)
2936 struct ppc_elf_dyn_relocs **pp;
2937 struct ppc_elf_dyn_relocs *p;
2939 /* Add reloc counts against the indirect sym to the direct sym
2940 list. Merge any entries against the same section. */
2941 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2943 struct ppc_elf_dyn_relocs *q;
2945 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2946 if (q->sec == p->sec)
2948 q->pc_count += p->pc_count;
2949 q->count += p->count;
2956 *pp = edir->dyn_relocs;
2959 edir->dyn_relocs = eind->dyn_relocs;
2960 eind->dyn_relocs = NULL;
2963 edir->tls_mask |= eind->tls_mask;
2964 edir->has_sda_refs |= eind->has_sda_refs;
2966 /* If called to transfer flags for a weakdef during processing
2967 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2968 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2969 if (!(ELIMINATE_COPY_RELOCS
2970 && eind->elf.root.type != bfd_link_hash_indirect
2971 && edir->elf.dynamic_adjusted))
2972 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2974 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2975 edir->elf.ref_regular |= eind->elf.ref_regular;
2976 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2977 edir->elf.needs_plt |= eind->elf.needs_plt;
2978 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
2980 /* If we were called to copy over info for a weak sym, that's all. */
2981 if (eind->elf.root.type != bfd_link_hash_indirect)
2984 /* Copy over the GOT refcount entries that we may have already seen to
2985 the symbol which just became indirect. */
2986 edir->elf.got.refcount += eind->elf.got.refcount;
2987 eind->elf.got.refcount = 0;
2989 /* And plt entries. */
2990 if (eind->elf.plt.plist != NULL)
2992 if (edir->elf.plt.plist != NULL)
2994 struct plt_entry **entp;
2995 struct plt_entry *ent;
2997 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2999 struct plt_entry *dent;
3001 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3002 if (dent->sec == ent->sec && dent->addend == ent->addend)
3004 dent->plt.refcount += ent->plt.refcount;
3011 *entp = edir->elf.plt.plist;
3014 edir->elf.plt.plist = eind->elf.plt.plist;
3015 eind->elf.plt.plist = NULL;
3018 if (eind->elf.dynindx != -1)
3020 if (edir->elf.dynindx != -1)
3021 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3022 edir->elf.dynstr_index);
3023 edir->elf.dynindx = eind->elf.dynindx;
3024 edir->elf.dynstr_index = eind->elf.dynstr_index;
3025 eind->elf.dynindx = -1;
3026 eind->elf.dynstr_index = 0;
3030 /* Hook called by the linker routine which adds symbols from an object
3031 file. We use it to put .comm items in .sbss, and not .bss. */
3034 ppc_elf_add_symbol_hook (bfd *abfd,
3035 struct bfd_link_info *info,
3036 Elf_Internal_Sym *sym,
3037 const char **namep ATTRIBUTE_UNUSED,
3038 flagword *flagsp ATTRIBUTE_UNUSED,
3042 if (sym->st_shndx == SHN_COMMON
3043 && !info->relocatable
3044 && is_ppc_elf (info->output_bfd)
3045 && sym->st_size <= elf_gp_size (abfd))
3047 /* Common symbols less than or equal to -G nn bytes are automatically
3049 struct ppc_elf_link_hash_table *htab;
3051 htab = ppc_elf_hash_table (info);
3052 if (htab->sbss == NULL)
3054 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3056 if (!htab->elf.dynobj)
3057 htab->elf.dynobj = abfd;
3059 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3062 if (htab->sbss == NULL)
3067 *valp = sym->st_size;
3074 create_sdata_sym (struct ppc_elf_link_hash_table *htab,
3075 elf_linker_section_t *lsect)
3077 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3079 if (lsect->sym == NULL)
3081 if (lsect->sym->root.type == bfd_link_hash_new)
3082 lsect->sym->non_elf = 0;
3083 lsect->sym->ref_regular = 1;
3087 /* Create a special linker section. */
3090 ppc_elf_create_linker_section (bfd *abfd,
3091 struct bfd_link_info *info,
3093 elf_linker_section_t *lsect)
3095 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3098 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3099 | SEC_LINKER_CREATED);
3101 /* Record the first bfd that needs the special sections. */
3102 if (!htab->elf.dynobj)
3103 htab->elf.dynobj = abfd;
3105 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3109 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3113 return create_sdata_sym (htab, lsect);
3116 /* Find a linker generated pointer with a given addend and type. */
3118 static elf_linker_section_pointers_t *
3119 elf_find_pointer_linker_section
3120 (elf_linker_section_pointers_t *linker_pointers,
3122 elf_linker_section_t *lsect)
3124 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3125 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3126 return linker_pointers;
3131 /* Allocate a pointer to live in a linker created section. */
3134 elf_create_pointer_linker_section (bfd *abfd,
3135 elf_linker_section_t *lsect,
3136 struct elf_link_hash_entry *h,
3137 const Elf_Internal_Rela *rel)
3139 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3140 elf_linker_section_pointers_t *linker_section_ptr;
3141 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3144 BFD_ASSERT (lsect != NULL);
3146 /* Is this a global symbol? */
3149 struct ppc_elf_link_hash_entry *eh;
3151 /* Has this symbol already been allocated? If so, our work is done. */
3152 eh = (struct ppc_elf_link_hash_entry *) h;
3153 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3158 ptr_linker_section_ptr = &eh->linker_section_pointer;
3162 BFD_ASSERT (is_ppc_elf (abfd));
3164 /* Allocation of a pointer to a local symbol. */
3165 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3167 /* Allocate a table to hold the local symbols if first time. */
3170 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3173 amt *= sizeof (elf_linker_section_pointers_t *);
3174 ptr = bfd_zalloc (abfd, amt);
3179 elf_local_ptr_offsets (abfd) = ptr;
3182 /* Has this symbol already been allocated? If so, our work is done. */
3183 if (elf_find_pointer_linker_section (ptr[r_symndx],
3188 ptr_linker_section_ptr = &ptr[r_symndx];
3191 /* Allocate space for a pointer in the linker section, and allocate
3192 a new pointer record from internal memory. */
3193 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3194 amt = sizeof (elf_linker_section_pointers_t);
3195 linker_section_ptr = bfd_alloc (abfd, amt);
3197 if (!linker_section_ptr)
3200 linker_section_ptr->next = *ptr_linker_section_ptr;
3201 linker_section_ptr->addend = rel->r_addend;
3202 linker_section_ptr->lsect = lsect;
3203 *ptr_linker_section_ptr = linker_section_ptr;
3205 linker_section_ptr->offset = lsect->section->size;
3206 lsect->section->size += 4;
3210 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3211 lsect->name, (long) linker_section_ptr->offset,
3212 (long) lsect->section->size);
3219 update_local_sym_info (bfd *abfd,
3220 Elf_Internal_Shdr *symtab_hdr,
3221 unsigned long r_symndx,
3224 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3225 char *local_got_tls_masks;
3227 if (local_got_refcounts == NULL)
3229 bfd_size_type size = symtab_hdr->sh_info;
3231 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
3232 local_got_refcounts = bfd_zalloc (abfd, size);
3233 if (local_got_refcounts == NULL)
3235 elf_local_got_refcounts (abfd) = local_got_refcounts;
3238 local_got_refcounts[r_symndx] += 1;
3239 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
3240 local_got_tls_masks[r_symndx] |= tls_type;
3245 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
3246 asection *sec, bfd_vma addend)
3248 struct plt_entry *ent;
3252 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3253 if (ent->sec == sec && ent->addend == addend)
3257 bfd_size_type amt = sizeof (*ent);
3258 ent = bfd_alloc (abfd, amt);
3261 ent->next = h->plt.plist;
3263 ent->addend = addend;
3264 ent->plt.refcount = 0;
3267 ent->plt.refcount += 1;
3271 static struct plt_entry *
3272 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
3274 struct plt_entry *ent;
3278 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3279 if (ent->sec == sec && ent->addend == addend)
3285 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3287 (*_bfd_error_handler)
3288 (_("%B: relocation %s cannot be used when making a shared object"),
3290 ppc_elf_howto_table[r_type]->name);
3291 bfd_set_error (bfd_error_bad_value);
3294 /* Look through the relocs for a section during the first phase, and
3295 allocate space in the global offset table or procedure linkage
3299 ppc_elf_check_relocs (bfd *abfd,
3300 struct bfd_link_info *info,
3302 const Elf_Internal_Rela *relocs)
3304 struct ppc_elf_link_hash_table *htab;
3305 Elf_Internal_Shdr *symtab_hdr;
3306 struct elf_link_hash_entry **sym_hashes;
3307 const Elf_Internal_Rela *rel;
3308 const Elf_Internal_Rela *rel_end;
3309 asection *got2, *sreloc;
3310 struct elf_link_hash_entry *tga;
3312 if (info->relocatable)
3315 /* Don't do anything special with non-loaded, non-alloced sections.
3316 In particular, any relocs in such sections should not affect GOT
3317 and PLT reference counting (ie. we don't allow them to create GOT
3318 or PLT entries), there's no possibility or desire to optimize TLS
3319 relocs, and there's not much point in propagating relocs to shared
3320 libs that the dynamic linker won't relocate. */
3321 if ((sec->flags & SEC_ALLOC) == 0)
3325 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3329 BFD_ASSERT (is_ppc_elf (abfd));
3331 /* Initialize howto table if not already done. */
3332 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3333 ppc_elf_howto_init ();
3335 htab = ppc_elf_hash_table (info);
3336 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3337 FALSE, FALSE, TRUE);
3338 symtab_hdr = &elf_symtab_hdr (abfd);
3339 sym_hashes = elf_sym_hashes (abfd);
3340 got2 = bfd_get_section_by_name (abfd, ".got2");
3343 rel_end = relocs + sec->reloc_count;
3344 for (rel = relocs; rel < rel_end; rel++)
3346 unsigned long r_symndx;
3347 enum elf_ppc_reloc_type r_type;
3348 struct elf_link_hash_entry *h;
3351 r_symndx = ELF32_R_SYM (rel->r_info);
3352 if (r_symndx < symtab_hdr->sh_info)
3356 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3357 while (h->root.type == bfd_link_hash_indirect
3358 || h->root.type == bfd_link_hash_warning)
3359 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3362 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3363 This shows up in particular in an R_PPC_ADDR32 in the eabi
3366 && htab->got == NULL
3367 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3369 if (htab->elf.dynobj == NULL)
3370 htab->elf.dynobj = abfd;
3371 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3373 BFD_ASSERT (h == htab->elf.hgot);
3377 r_type = ELF32_R_TYPE (rel->r_info);
3378 if (h != NULL && h == tga)
3384 case R_PPC_PLTREL24:
3385 case R_PPC_LOCAL24PC:
3388 case R_PPC_REL14_BRTAKEN:
3389 case R_PPC_REL14_BRNTAKEN:
3392 case R_PPC_ADDR14_BRTAKEN:
3393 case R_PPC_ADDR14_BRNTAKEN:
3395 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3396 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3397 /* We have a new-style __tls_get_addr call with a marker
3401 /* Mark this section as having an old-style call. */
3402 sec->has_tls_get_addr_call = 1;
3410 /* These special tls relocs tie a call to __tls_get_addr with
3411 its parameter symbol. */
3414 case R_PPC_GOT_TLSLD16:
3415 case R_PPC_GOT_TLSLD16_LO:
3416 case R_PPC_GOT_TLSLD16_HI:
3417 case R_PPC_GOT_TLSLD16_HA:
3418 tls_type = TLS_TLS | TLS_LD;
3421 case R_PPC_GOT_TLSGD16:
3422 case R_PPC_GOT_TLSGD16_LO:
3423 case R_PPC_GOT_TLSGD16_HI:
3424 case R_PPC_GOT_TLSGD16_HA:
3425 tls_type = TLS_TLS | TLS_GD;
3428 case R_PPC_GOT_TPREL16:
3429 case R_PPC_GOT_TPREL16_LO:
3430 case R_PPC_GOT_TPREL16_HI:
3431 case R_PPC_GOT_TPREL16_HA:
3432 if (!info->executable)
3433 info->flags |= DF_STATIC_TLS;
3434 tls_type = TLS_TLS | TLS_TPREL;
3437 case R_PPC_GOT_DTPREL16:
3438 case R_PPC_GOT_DTPREL16_LO:
3439 case R_PPC_GOT_DTPREL16_HI:
3440 case R_PPC_GOT_DTPREL16_HA:
3441 tls_type = TLS_TLS | TLS_DTPREL;
3443 sec->has_tls_reloc = 1;
3446 /* GOT16 relocations */
3448 case R_PPC_GOT16_LO:
3449 case R_PPC_GOT16_HI:
3450 case R_PPC_GOT16_HA:
3451 /* This symbol requires a global offset table entry. */
3452 if (htab->got == NULL)
3454 if (htab->elf.dynobj == NULL)
3455 htab->elf.dynobj = abfd;
3456 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3461 h->got.refcount += 1;
3462 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3465 /* This is a global offset table entry for a local symbol. */
3466 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3470 /* Indirect .sdata relocation. */
3471 case R_PPC_EMB_SDAI16:
3474 bad_shared_reloc (abfd, r_type);
3477 if (htab->sdata[0].section == NULL
3478 && !ppc_elf_create_linker_section (abfd, info, 0,
3481 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3486 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3487 h->non_got_ref = TRUE;
3491 /* Indirect .sdata2 relocation. */
3492 case R_PPC_EMB_SDA2I16:
3495 bad_shared_reloc (abfd, r_type);
3498 if (htab->sdata[1].section == NULL
3499 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3502 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3507 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3508 h->non_got_ref = TRUE;
3512 case R_PPC_SDAREL16:
3515 bad_shared_reloc (abfd, r_type);
3518 if (htab->sdata[0].sym == NULL
3519 && !create_sdata_sym (htab, &htab->sdata[0]))
3523 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3524 h->non_got_ref = TRUE;
3528 case R_PPC_EMB_SDA2REL:
3531 bad_shared_reloc (abfd, r_type);
3534 if (htab->sdata[1].sym == NULL
3535 && !create_sdata_sym (htab, &htab->sdata[1]))
3539 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3540 h->non_got_ref = TRUE;
3544 case R_PPC_EMB_SDA21:
3545 case R_PPC_EMB_RELSDA:
3548 bad_shared_reloc (abfd, r_type);
3551 if (htab->sdata[0].sym == NULL
3552 && !create_sdata_sym (htab, &htab->sdata[0]))
3554 if (htab->sdata[1].sym == NULL
3555 && !create_sdata_sym (htab, &htab->sdata[1]))
3559 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3560 h->non_got_ref = TRUE;
3564 case R_PPC_EMB_NADDR32:
3565 case R_PPC_EMB_NADDR16:
3566 case R_PPC_EMB_NADDR16_LO:
3567 case R_PPC_EMB_NADDR16_HI:
3568 case R_PPC_EMB_NADDR16_HA:
3571 bad_shared_reloc (abfd, r_type);
3575 h->non_got_ref = TRUE;
3579 case R_PPC_PLTREL24:
3580 case R_PPC_PLTREL32:
3581 case R_PPC_PLT16_LO:
3582 case R_PPC_PLT16_HI:
3583 case R_PPC_PLT16_HA:
3585 fprintf (stderr, "Reloc requires a PLT entry\n");
3587 /* This symbol requires a procedure linkage table entry. We
3588 actually build the entry in finish_dynamic_symbol,
3589 because this might be a case of linking PIC code without
3590 linking in any dynamic objects, in which case we don't
3591 need to generate a procedure linkage table after all. */
3595 /* It does not make sense to have a procedure linkage
3596 table entry for a local symbol. */
3597 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3601 (long) rel->r_offset,
3602 ppc_elf_howto_table[r_type]->name);
3603 bfd_set_error (bfd_error_bad_value);
3610 if (r_type == R_PPC_PLTREL24)
3612 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3613 addend = rel->r_addend;
3616 if (!update_plt_info (abfd, h, got2, addend))
3621 /* The following relocations don't need to propagate the
3622 relocation if linking a shared object since they are
3623 section relative. */
3625 case R_PPC_SECTOFF_LO:
3626 case R_PPC_SECTOFF_HI:
3627 case R_PPC_SECTOFF_HA:
3628 case R_PPC_DTPREL16:
3629 case R_PPC_DTPREL16_LO:
3630 case R_PPC_DTPREL16_HI:
3631 case R_PPC_DTPREL16_HA:
3636 case R_PPC_REL16_LO:
3637 case R_PPC_REL16_HI:
3638 case R_PPC_REL16_HA:
3639 ppc_elf_tdata (abfd)->has_rel16 = 1;
3642 /* These are just markers. */
3644 case R_PPC_EMB_MRKREF:
3649 /* These should only appear in dynamic objects. */
3651 case R_PPC_GLOB_DAT:
3652 case R_PPC_JMP_SLOT:
3653 case R_PPC_RELATIVE:
3656 /* These aren't handled yet. We'll report an error later. */
3658 case R_PPC_EMB_RELSEC16:
3659 case R_PPC_EMB_RELST_LO:
3660 case R_PPC_EMB_RELST_HI:
3661 case R_PPC_EMB_RELST_HA:
3662 case R_PPC_EMB_BIT_FLD:
3665 /* This refers only to functions defined in the shared library. */
3666 case R_PPC_LOCAL24PC:
3667 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3669 htab->plt_type = PLT_OLD;
3670 htab->old_bfd = abfd;
3674 /* This relocation describes the C++ object vtable hierarchy.
3675 Reconstruct it for later use during GC. */
3676 case R_PPC_GNU_VTINHERIT:
3677 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3681 /* This relocation describes which C++ vtable entries are actually
3682 used. Record for later use during GC. */
3683 case R_PPC_GNU_VTENTRY:
3684 BFD_ASSERT (h != NULL);
3686 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3690 /* We shouldn't really be seeing these. */
3693 case R_PPC_TPREL16_LO:
3694 case R_PPC_TPREL16_HI:
3695 case R_PPC_TPREL16_HA:
3696 if (!info->executable)
3697 info->flags |= DF_STATIC_TLS;
3701 case R_PPC_DTPMOD32:
3702 case R_PPC_DTPREL32:
3708 && (sec->flags & SEC_CODE) != 0
3709 && (info->shared || info->pie)
3710 && htab->plt_type == PLT_UNSET)
3712 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3713 the start of a function, which assembles to a REL32
3714 reference to .got2. If we detect one of these, then
3715 force the old PLT layout because the linker cannot
3716 reliably deduce the GOT pointer value needed for
3720 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3724 htab->plt_type = PLT_OLD;
3725 htab->old_bfd = abfd;
3728 if (h == NULL || h == htab->elf.hgot)
3734 case R_PPC_ADDR16_LO:
3735 case R_PPC_ADDR16_HI:
3736 case R_PPC_ADDR16_HA:
3739 if (h != NULL && !info->shared)
3741 /* We may need a plt entry if the symbol turns out to be
3742 a function defined in a dynamic object. */
3743 if (!update_plt_info (abfd, h, NULL, 0))
3746 /* We may need a copy reloc too. */
3748 h->pointer_equality_needed = 1;
3754 case R_PPC_REL14_BRTAKEN:
3755 case R_PPC_REL14_BRNTAKEN:
3758 if (h == htab->elf.hgot)
3760 if (htab->plt_type == PLT_UNSET)
3762 htab->plt_type = PLT_OLD;
3763 htab->old_bfd = abfd;
3771 case R_PPC_ADDR14_BRTAKEN:
3772 case R_PPC_ADDR14_BRNTAKEN:
3773 if (h != NULL && !info->shared)
3775 /* We may need a plt entry if the symbol turns out to be
3776 a function defined in a dynamic object. */
3777 if (!update_plt_info (abfd, h, NULL, 0))
3783 /* If we are creating a shared library, and this is a reloc
3784 against a global symbol, or a non PC relative reloc
3785 against a local symbol, then we need to copy the reloc
3786 into the shared library. However, if we are linking with
3787 -Bsymbolic, we do not need to copy a reloc against a
3788 global symbol which is defined in an object we are
3789 including in the link (i.e., DEF_REGULAR is set). At
3790 this point we have not seen all the input files, so it is
3791 possible that DEF_REGULAR is not set now but will be set
3792 later (it is never cleared). In case of a weak definition,
3793 DEF_REGULAR may be cleared later by a strong definition in
3794 a shared library. We account for that possibility below by
3795 storing information in the dyn_relocs field of the hash
3796 table entry. A similar situation occurs when creating
3797 shared libraries and symbol visibility changes render the
3800 If on the other hand, we are creating an executable, we
3801 may need to keep relocations for symbols satisfied by a
3802 dynamic library if we manage to avoid copy relocs for the
3805 && (must_be_dyn_reloc (info, r_type)
3807 && (! info->symbolic
3808 || h->root.type == bfd_link_hash_defweak
3809 || !h->def_regular))))
3810 || (ELIMINATE_COPY_RELOCS
3813 && (h->root.type == bfd_link_hash_defweak
3814 || !h->def_regular)))
3816 struct ppc_elf_dyn_relocs *p;
3817 struct ppc_elf_dyn_relocs **head;
3821 "ppc_elf_check_relocs needs to "
3822 "create relocation for %s\n",
3823 (h && h->root.root.string
3824 ? h->root.root.string : "<unknown>"));
3828 if (htab->elf.dynobj == NULL)
3829 htab->elf.dynobj = abfd;
3831 sreloc = _bfd_elf_make_dynamic_reloc_section
3832 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3838 /* If this is a global symbol, we count the number of
3839 relocations we need for this symbol. */
3842 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3846 /* Track dynamic relocs needed for local syms too.
3847 We really need local syms available to do this
3853 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3858 vpp = &elf_section_data (s)->local_dynrel;
3859 head = (struct ppc_elf_dyn_relocs **) vpp;
3863 if (p == NULL || p->sec != sec)
3865 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3876 if (!must_be_dyn_reloc (info, r_type))
3888 /* Merge object attributes from IBFD into OBFD. Raise an error if
3889 there are conflicting attributes. */
3891 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
3893 obj_attribute *in_attr, *in_attrs;
3894 obj_attribute *out_attr, *out_attrs;
3896 if (!elf_known_obj_attributes_proc (obfd)[0].i)
3898 /* This is the first object. Copy the attributes. */
3899 _bfd_elf_copy_obj_attributes (ibfd, obfd);
3901 /* Use the Tag_null value to indicate the attributes have been
3903 elf_known_obj_attributes_proc (obfd)[0].i = 1;
3908 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
3909 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
3911 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
3912 non-conflicting ones. */
3913 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
3914 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
3915 if (in_attr->i != out_attr->i)
3918 if (out_attr->i == 0)
3919 out_attr->i = in_attr->i;
3920 else if (in_attr->i == 0)
3922 else if (out_attr->i == 1 && in_attr->i == 2)
3924 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
3925 else if (out_attr->i == 1 && in_attr->i == 3)
3927 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3929 else if (out_attr->i == 3 && in_attr->i == 1)
3931 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
3933 else if (out_attr->i == 3 && in_attr->i == 2)
3935 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
3937 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
3939 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
3940 else if (in_attr->i > 3)
3942 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
3946 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
3950 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
3951 merge non-conflicting ones. */
3952 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
3953 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
3954 if (in_attr->i != out_attr->i)
3956 const char *in_abi = NULL, *out_abi = NULL;
3960 case 1: in_abi = "generic"; break;
3961 case 2: in_abi = "AltiVec"; break;
3962 case 3: in_abi = "SPE"; break;
3965 switch (out_attr->i)
3967 case 1: out_abi = "generic"; break;
3968 case 2: out_abi = "AltiVec"; break;
3969 case 3: out_abi = "SPE"; break;
3973 if (out_attr->i == 0)
3974 out_attr->i = in_attr->i;
3975 else if (in_attr->i == 0)
3977 /* For now, allow generic to transition to AltiVec or SPE
3978 without a warning. If GCC marked files with their stack
3979 alignment and used don't-care markings for files which are
3980 not affected by the vector ABI, we could warn about this
3982 else if (out_attr->i == 1)
3983 out_attr->i = in_attr->i;
3984 else if (in_attr->i == 1)
3986 else if (in_abi == NULL)
3988 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
3990 else if (out_abi == NULL)
3992 (_("Warning: %B uses unknown vector ABI %d"), obfd,
3996 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
3997 ibfd, obfd, in_abi, out_abi);
4000 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4001 and merge non-conflicting ones. */
4002 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4003 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4004 if (in_attr->i != out_attr->i)
4007 if (out_attr->i == 0)
4008 out_attr->i = in_attr->i;
4009 else if (in_attr->i == 0)
4011 else if (out_attr->i == 1 && in_attr->i == 2)
4013 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4014 else if (out_attr->i == 2 && in_attr->i == 1)
4016 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4017 else if (in_attr->i > 2)
4019 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4023 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4027 /* Merge Tag_compatibility attributes and any common GNU ones. */
4028 _bfd_elf_merge_object_attributes (ibfd, obfd);
4033 /* Merge backend specific data from an object file to the output
4034 object file when linking. */
4037 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4043 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4046 /* Check if we have the same endianess. */
4047 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4050 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4053 new_flags = elf_elfheader (ibfd)->e_flags;
4054 old_flags = elf_elfheader (obfd)->e_flags;
4055 if (!elf_flags_init (obfd))
4057 /* First call, no flags set. */
4058 elf_flags_init (obfd) = TRUE;
4059 elf_elfheader (obfd)->e_flags = new_flags;
4062 /* Compatible flags are ok. */
4063 else if (new_flags == old_flags)
4066 /* Incompatible flags. */
4069 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4070 to be linked with either. */
4072 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4073 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4076 (*_bfd_error_handler)
4077 (_("%B: compiled with -mrelocatable and linked with "
4078 "modules compiled normally"), ibfd);
4080 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4081 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4084 (*_bfd_error_handler)
4085 (_("%B: compiled normally and linked with "
4086 "modules compiled with -mrelocatable"), ibfd);
4089 /* The output is -mrelocatable-lib iff both the input files are. */
4090 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4091 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4093 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4094 but each input file is either -mrelocatable or -mrelocatable-lib. */
4095 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4096 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4097 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4098 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4100 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4101 any module uses it. */
4102 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4104 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4105 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4107 /* Warn about any other mismatches. */
4108 if (new_flags != old_flags)
4111 (*_bfd_error_handler)
4112 (_("%B: uses different e_flags (0x%lx) fields "
4113 "than previous modules (0x%lx)"),
4114 ibfd, (long) new_flags, (long) old_flags);
4119 bfd_set_error (bfd_error_bad_value);
4127 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4128 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4130 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4131 struct bfd_link_info *info,
4132 enum ppc_elf_plt_type plt_style,
4135 struct ppc_elf_link_hash_table *htab;
4138 htab = ppc_elf_hash_table (info);
4140 if (htab->plt_type == PLT_UNSET)
4142 if (plt_style == PLT_OLD)
4143 htab->plt_type = PLT_OLD;
4147 enum ppc_elf_plt_type plt_type = plt_style;
4149 /* Look through the reloc flags left by ppc_elf_check_relocs.
4150 Use the old style bss plt if a file makes plt calls
4151 without using the new relocs, and if ld isn't given
4152 --secure-plt and we never see REL16 relocs. */
4153 if (plt_type == PLT_UNSET)
4155 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4156 if (is_ppc_elf (ibfd))
4158 if (ppc_elf_tdata (ibfd)->has_rel16)
4160 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4163 htab->old_bfd = ibfd;
4167 htab->plt_type = plt_type;
4170 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4171 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4173 htab->emit_stub_syms = emit_stub_syms;
4175 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4177 if (htab->plt_type == PLT_NEW)
4179 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4180 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4182 /* The new PLT is a loaded section. */
4183 if (htab->plt != NULL
4184 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4187 /* The new GOT is not executable. */
4188 if (htab->got != NULL
4189 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4194 /* Stop an unused .glink section from affecting .text alignment. */
4195 if (htab->glink != NULL
4196 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4199 return htab->plt_type == PLT_NEW;
4202 /* Return the section that should be marked against GC for a given
4206 ppc_elf_gc_mark_hook (asection *sec,
4207 struct bfd_link_info *info,
4208 Elf_Internal_Rela *rel,
4209 struct elf_link_hash_entry *h,
4210 Elf_Internal_Sym *sym)
4213 switch (ELF32_R_TYPE (rel->r_info))
4215 case R_PPC_GNU_VTINHERIT:
4216 case R_PPC_GNU_VTENTRY:
4220 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4223 /* Update the got, plt and dynamic reloc reference counts for the
4224 section being removed. */
4227 ppc_elf_gc_sweep_hook (bfd *abfd,
4228 struct bfd_link_info *info,
4230 const Elf_Internal_Rela *relocs)
4232 struct ppc_elf_link_hash_table *htab;
4233 Elf_Internal_Shdr *symtab_hdr;
4234 struct elf_link_hash_entry **sym_hashes;
4235 bfd_signed_vma *local_got_refcounts;
4236 const Elf_Internal_Rela *rel, *relend;
4239 if (info->relocatable)
4242 if ((sec->flags & SEC_ALLOC) == 0)
4245 elf_section_data (sec)->local_dynrel = NULL;
4247 htab = ppc_elf_hash_table (info);
4248 symtab_hdr = &elf_symtab_hdr (abfd);
4249 sym_hashes = elf_sym_hashes (abfd);
4250 local_got_refcounts = elf_local_got_refcounts (abfd);
4251 got2 = bfd_get_section_by_name (abfd, ".got2");
4253 relend = relocs + sec->reloc_count;
4254 for (rel = relocs; rel < relend; rel++)
4256 unsigned long r_symndx;
4257 enum elf_ppc_reloc_type r_type;
4258 struct elf_link_hash_entry *h = NULL;
4260 r_symndx = ELF32_R_SYM (rel->r_info);
4261 if (r_symndx >= symtab_hdr->sh_info)
4263 struct ppc_elf_dyn_relocs **pp, *p;
4264 struct ppc_elf_link_hash_entry *eh;
4266 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4267 while (h->root.type == bfd_link_hash_indirect
4268 || h->root.type == bfd_link_hash_warning)
4269 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4270 eh = (struct ppc_elf_link_hash_entry *) h;
4272 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4275 /* Everything must go for SEC. */
4281 r_type = ELF32_R_TYPE (rel->r_info);
4284 case R_PPC_GOT_TLSLD16:
4285 case R_PPC_GOT_TLSLD16_LO:
4286 case R_PPC_GOT_TLSLD16_HI:
4287 case R_PPC_GOT_TLSLD16_HA:
4288 case R_PPC_GOT_TLSGD16:
4289 case R_PPC_GOT_TLSGD16_LO:
4290 case R_PPC_GOT_TLSGD16_HI:
4291 case R_PPC_GOT_TLSGD16_HA:
4292 case R_PPC_GOT_TPREL16:
4293 case R_PPC_GOT_TPREL16_LO:
4294 case R_PPC_GOT_TPREL16_HI:
4295 case R_PPC_GOT_TPREL16_HA:
4296 case R_PPC_GOT_DTPREL16:
4297 case R_PPC_GOT_DTPREL16_LO:
4298 case R_PPC_GOT_DTPREL16_HI:
4299 case R_PPC_GOT_DTPREL16_HA:
4301 case R_PPC_GOT16_LO:
4302 case R_PPC_GOT16_HI:
4303 case R_PPC_GOT16_HA:
4306 if (h->got.refcount > 0)
4309 else if (local_got_refcounts != NULL)
4311 if (local_got_refcounts[r_symndx] > 0)
4312 local_got_refcounts[r_symndx]--;
4318 case R_PPC_REL14_BRTAKEN:
4319 case R_PPC_REL14_BRNTAKEN:
4321 if (h == NULL || h == htab->elf.hgot)
4328 case R_PPC_ADDR16_LO:
4329 case R_PPC_ADDR16_HI:
4330 case R_PPC_ADDR16_HA:
4332 case R_PPC_ADDR14_BRTAKEN:
4333 case R_PPC_ADDR14_BRNTAKEN:
4340 case R_PPC_PLTREL24:
4341 case R_PPC_PLTREL32:
4342 case R_PPC_PLT16_LO:
4343 case R_PPC_PLT16_HI:
4344 case R_PPC_PLT16_HA:
4347 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
4348 struct plt_entry *ent = find_plt_ent (h, got2, addend);
4349 if (ent->plt.refcount > 0)
4350 ent->plt.refcount -= 1;
4361 /* Set plt output section type, htab->tls_get_addr, and call the
4362 generic ELF tls_setup function. */
4365 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4367 struct ppc_elf_link_hash_table *htab;
4369 htab = ppc_elf_hash_table (info);
4370 if (htab->plt_type == PLT_NEW
4371 && htab->plt != NULL
4372 && htab->plt->output_section != NULL)
4374 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4375 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4378 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4379 FALSE, FALSE, TRUE);
4380 return _bfd_elf_tls_setup (obfd, info);
4383 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4387 branch_reloc_hash_match (const bfd *ibfd,
4388 const Elf_Internal_Rela *rel,
4389 const struct elf_link_hash_entry *hash)
4391 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4392 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4393 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4395 if (r_symndx >= symtab_hdr->sh_info
4396 && (r_type == R_PPC_PLTREL24
4397 || r_type == R_PPC_LOCAL24PC
4398 || r_type == R_PPC_REL14
4399 || r_type == R_PPC_REL14_BRTAKEN
4400 || r_type == R_PPC_REL14_BRNTAKEN
4401 || r_type == R_PPC_REL24
4402 || r_type == R_PPC_ADDR24
4403 || r_type == R_PPC_ADDR14
4404 || r_type == R_PPC_ADDR14_BRTAKEN
4405 || r_type == R_PPC_ADDR14_BRNTAKEN))
4407 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4408 struct elf_link_hash_entry *h;
4410 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4411 while (h->root.type == bfd_link_hash_indirect
4412 || h->root.type == bfd_link_hash_warning)
4413 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4420 /* Run through all the TLS relocs looking for optimization
4424 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4425 struct bfd_link_info *info)
4429 struct ppc_elf_link_hash_table *htab;
4432 if (info->relocatable || !info->executable)
4435 htab = ppc_elf_hash_table (info);
4436 /* Make two passes through the relocs. First time check that tls
4437 relocs involved in setting up a tls_get_addr call are indeed
4438 followed by such a call. If they are not, exclude them from
4439 the optimizations done on the second pass. */
4440 for (pass = 0; pass < 2; ++pass)
4441 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4443 Elf_Internal_Sym *locsyms = NULL;
4444 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4446 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4447 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4449 Elf_Internal_Rela *relstart, *rel, *relend;
4451 /* Read the relocations. */
4452 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4454 if (relstart == NULL)
4457 relend = relstart + sec->reloc_count;
4458 for (rel = relstart; rel < relend; rel++)
4460 enum elf_ppc_reloc_type r_type;
4461 unsigned long r_symndx;
4462 struct elf_link_hash_entry *h = NULL;
4464 char tls_set, tls_clear;
4465 bfd_boolean is_local;
4466 int expecting_tls_get_addr;
4467 bfd_signed_vma *got_count;
4469 r_symndx = ELF32_R_SYM (rel->r_info);
4470 if (r_symndx >= symtab_hdr->sh_info)
4472 struct elf_link_hash_entry **sym_hashes;
4474 sym_hashes = elf_sym_hashes (ibfd);
4475 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4476 while (h->root.type == bfd_link_hash_indirect
4477 || h->root.type == bfd_link_hash_warning)
4478 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4481 expecting_tls_get_addr = 0;
4487 r_type = ELF32_R_TYPE (rel->r_info);
4490 case R_PPC_GOT_TLSLD16:
4491 case R_PPC_GOT_TLSLD16_LO:
4492 expecting_tls_get_addr = 1;
4495 case R_PPC_GOT_TLSLD16_HI:
4496 case R_PPC_GOT_TLSLD16_HA:
4497 /* These relocs should never be against a symbol
4498 defined in a shared lib. Leave them alone if
4499 that turns out to be the case. */
4508 case R_PPC_GOT_TLSGD16:
4509 case R_PPC_GOT_TLSGD16_LO:
4510 expecting_tls_get_addr = 1;
4513 case R_PPC_GOT_TLSGD16_HI:
4514 case R_PPC_GOT_TLSGD16_HA:
4520 tls_set = TLS_TLS | TLS_TPRELGD;
4524 case R_PPC_GOT_TPREL16:
4525 case R_PPC_GOT_TPREL16_LO:
4526 case R_PPC_GOT_TPREL16_HI:
4527 case R_PPC_GOT_TPREL16_HA:
4532 tls_clear = TLS_TPREL;
4544 if (!expecting_tls_get_addr
4545 || !sec->has_tls_get_addr_call)
4548 if (rel + 1 < relend
4549 && branch_reloc_hash_match (ibfd, rel + 1,
4550 htab->tls_get_addr))
4553 /* Uh oh, we didn't find the expected call. We
4554 could just mark this symbol to exclude it
4555 from tls optimization but it's safer to skip
4556 the entire section. */
4557 sec->has_tls_reloc = 0;
4563 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4564 got_count = &h->got.refcount;
4568 Elf_Internal_Sym *sym;
4569 bfd_signed_vma *lgot_refs;
4572 if (locsyms == NULL)
4574 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4575 if (locsyms == NULL)
4576 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4577 symtab_hdr->sh_info,
4578 0, NULL, NULL, NULL);
4579 if (locsyms == NULL)
4581 if (elf_section_data (sec)->relocs != relstart)
4586 sym = locsyms + r_symndx;
4587 lgot_refs = elf_local_got_refcounts (ibfd);
4588 if (lgot_refs == NULL)
4590 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
4591 tls_mask = &lgot_masks[r_symndx];
4592 got_count = &lgot_refs[r_symndx];
4597 /* We managed to get rid of a got entry. */
4602 if (expecting_tls_get_addr)
4604 struct plt_entry *ent;
4606 ent = find_plt_ent (htab->tls_get_addr, NULL, 0);
4607 if (ent != NULL && ent->plt.refcount > 0)
4608 ent->plt.refcount -= 1;
4611 *tls_mask |= tls_set;
4612 *tls_mask &= ~tls_clear;
4615 if (elf_section_data (sec)->relocs != relstart)
4620 && (symtab_hdr->contents != (unsigned char *) locsyms))
4622 if (!info->keep_memory)
4625 symtab_hdr->contents = (unsigned char *) locsyms;
4631 /* Return true if we have dynamic relocs that apply to read-only sections. */
4634 readonly_dynrelocs (struct elf_link_hash_entry *h)
4636 struct ppc_elf_dyn_relocs *p;
4638 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4640 asection *s = p->sec->output_section;
4643 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4644 == (SEC_READONLY | SEC_ALLOC)))
4650 /* Adjust a symbol defined by a dynamic object and referenced by a
4651 regular object. The current definition is in some section of the
4652 dynamic object, but we're not including those sections. We have to
4653 change the definition to something the rest of the link can
4657 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4658 struct elf_link_hash_entry *h)
4660 struct ppc_elf_link_hash_table *htab;
4664 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4665 h->root.root.string);
4668 /* Make sure we know what is going on here. */
4669 htab = ppc_elf_hash_table (info);
4670 BFD_ASSERT (htab->elf.dynobj != NULL
4672 || h->u.weakdef != NULL
4675 && !h->def_regular)));
4677 /* Deal with function syms. */
4678 if (h->type == STT_FUNC
4681 /* Clear procedure linkage table information for any symbol that
4682 won't need a .plt entry. */
4683 struct plt_entry *ent;
4684 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4685 if (ent->plt.refcount > 0)
4688 || SYMBOL_CALLS_LOCAL (info, h)
4689 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4690 && h->root.type == bfd_link_hash_undefweak))
4692 /* A PLT entry is not required/allowed when:
4694 1. We are not using ld.so; because then the PLT entry
4695 can't be set up, so we can't use one. In this case,
4696 ppc_elf_adjust_dynamic_symbol won't even be called.
4698 2. GC has rendered the entry unused.
4700 3. We know for certain that a call to this symbol
4701 will go to this object, or will remain undefined. */
4702 h->plt.plist = NULL;
4707 /* After adjust_dynamic_symbol, non_got_ref set means that
4708 dyn_relocs for this symbol should be discarded.
4709 If we get here we know we are making a PLT entry for this
4710 symbol, and in an executable we'd normally resolve
4711 relocations against this symbol to the PLT entry. Allow
4712 dynamic relocs if the reference is weak, and the dynamic
4713 relocs will not cause text relocation. */
4714 if (!h->ref_regular_nonweak
4716 && !htab->is_vxworks
4717 && !ppc_elf_hash_entry (h)->has_sda_refs
4718 && !readonly_dynrelocs (h))
4724 h->plt.plist = NULL;
4726 /* If this is a weak symbol, and there is a real definition, the
4727 processor independent code will have arranged for us to see the
4728 real definition first, and we can just use the same value. */
4729 if (h->u.weakdef != NULL)
4731 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4732 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4733 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4734 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4735 if (ELIMINATE_COPY_RELOCS)
4736 h->non_got_ref = h->u.weakdef->non_got_ref;
4740 /* This is a reference to a symbol defined by a dynamic object which
4741 is not a function. */
4743 /* If we are creating a shared library, we must presume that the
4744 only references to the symbol are via the global offset table.
4745 For such cases we need not do anything here; the relocations will
4746 be handled correctly by relocate_section. */
4750 /* If there are no references to this symbol that do not use the
4751 GOT, we don't need to generate a copy reloc. */
4752 if (!h->non_got_ref)
4755 /* If we didn't find any dynamic relocs in read-only sections, then
4756 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4757 We can't do this if there are any small data relocations. This
4758 doesn't work on VxWorks, where we can not have dynamic
4759 relocations (other than copy and jump slot relocations) in an
4761 if (ELIMINATE_COPY_RELOCS
4762 && !ppc_elf_hash_entry (h)->has_sda_refs
4763 && !htab->is_vxworks
4765 && !readonly_dynrelocs (h))
4773 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4774 h->root.root.string);
4778 /* We must allocate the symbol in our .dynbss section, which will
4779 become part of the .bss section of the executable. There will be
4780 an entry for this symbol in the .dynsym section. The dynamic
4781 object will contain position independent code, so all references
4782 from the dynamic object to this symbol will go through the global
4783 offset table. The dynamic linker will use the .dynsym entry to
4784 determine the address it must put in the global offset table, so
4785 both the dynamic object and the regular object will refer to the
4786 same memory location for the variable.
4788 Of course, if the symbol is referenced using SDAREL relocs, we
4789 must instead allocate it in .sbss. */
4791 if (ppc_elf_hash_entry (h)->has_sda_refs)
4795 BFD_ASSERT (s != NULL);
4797 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4798 copy the initial value out of the dynamic object and into the
4799 runtime process image. We need to remember the offset into the
4800 .rela.bss section we are going to use. */
4801 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4805 if (ppc_elf_hash_entry (h)->has_sda_refs)
4806 srel = htab->relsbss;
4808 srel = htab->relbss;
4809 BFD_ASSERT (srel != NULL);
4810 srel->size += sizeof (Elf32_External_Rela);
4814 return _bfd_elf_adjust_dynamic_copy (h, s);
4817 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4818 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4819 specifying the addend on the plt relocation. For -fpic code, the sym
4820 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4821 xxxxxxxx.got2.plt_pic32.<callee>. */
4824 add_stub_sym (struct plt_entry *ent,
4825 struct elf_link_hash_entry *h,
4826 struct bfd_link_info *info)
4828 struct elf_link_hash_entry *sh;
4829 size_t len1, len2, len3;
4832 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
4834 if (info->shared || info->pie)
4835 stub = ".plt_pic32.";
4837 stub = ".plt_call32.";
4839 len1 = strlen (h->root.root.string);
4840 len2 = strlen (stub);
4843 len3 = strlen (ent->sec->name);
4844 name = bfd_malloc (len1 + len2 + len3 + 9);
4847 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
4849 memcpy (name + 8, ent->sec->name, len3);
4850 memcpy (name + 8 + len3, stub, len2);
4851 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
4852 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
4855 if (sh->root.type == bfd_link_hash_new)
4857 sh->root.type = bfd_link_hash_defined;
4858 sh->root.u.def.section = htab->glink;
4859 sh->root.u.def.value = ent->glink_offset;
4860 sh->ref_regular = 1;
4861 sh->def_regular = 1;
4862 sh->ref_regular_nonweak = 1;
4863 sh->forced_local = 1;
4869 /* Allocate NEED contiguous space in .got, and return the offset.
4870 Handles allocation of the got header when crossing 32k. */
4873 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4876 unsigned int max_before_header;
4878 if (htab->plt_type == PLT_VXWORKS)
4880 where = htab->got->size;
4881 htab->got->size += need;
4885 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
4886 if (need <= htab->got_gap)
4888 where = max_before_header - htab->got_gap;
4889 htab->got_gap -= need;
4893 if (htab->got->size + need > max_before_header
4894 && htab->got->size <= max_before_header)
4896 htab->got_gap = max_before_header - htab->got->size;
4897 htab->got->size = max_before_header + htab->got_header_size;
4899 where = htab->got->size;
4900 htab->got->size += need;
4906 /* Allocate space in associated reloc sections for dynamic relocs. */
4909 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4911 struct bfd_link_info *info = inf;
4912 struct ppc_elf_link_hash_entry *eh;
4913 struct ppc_elf_link_hash_table *htab;
4914 struct ppc_elf_dyn_relocs *p;
4916 if (h->root.type == bfd_link_hash_indirect)
4919 if (h->root.type == bfd_link_hash_warning)
4920 /* When warning symbols are created, they **replace** the "real"
4921 entry in the hash table, thus we never get to see the real
4922 symbol in a hash traversal. So look at it now. */
4923 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4925 htab = ppc_elf_hash_table (info);
4926 if (htab->elf.dynamic_sections_created)
4928 struct plt_entry *ent;
4929 bfd_boolean doneone = FALSE;
4930 bfd_vma plt_offset = 0, glink_offset = 0;
4932 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4933 if (ent->plt.refcount > 0)
4935 /* Make sure this symbol is output as a dynamic symbol. */
4936 if (h->dynindx == -1
4937 && !h->forced_local)
4939 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4944 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4946 asection *s = htab->plt;
4948 if (htab->plt_type == PLT_NEW)
4952 plt_offset = s->size;
4955 ent->plt.offset = plt_offset;
4958 if (!doneone || info->shared || info->pie)
4960 glink_offset = s->size;
4961 s->size += GLINK_ENTRY_SIZE;
4968 h->root.u.def.section = s;
4969 h->root.u.def.value = glink_offset;
4971 ent->glink_offset = glink_offset;
4973 if (htab->emit_stub_syms
4974 && !add_stub_sym (ent, h, info))
4981 /* If this is the first .plt entry, make room
4982 for the special first entry. */
4984 s->size += htab->plt_initial_entry_size;
4986 /* The PowerPC PLT is actually composed of two
4987 parts, the first part is 2 words (for a load
4988 and a jump), and then there is a remaining
4989 word available at the end. */
4990 plt_offset = (htab->plt_initial_entry_size
4991 + (htab->plt_slot_size
4993 - htab->plt_initial_entry_size)
4994 / htab->plt_entry_size)));
4996 /* If this symbol is not defined in a regular
4997 file, and we are not generating a shared
4998 library, then set the symbol to this location
4999 in the .plt. This is required to make
5000 function pointers compare as equal between
5001 the normal executable and the shared library. */
5006 h->root.u.def.section = s;
5007 h->root.u.def.value = plt_offset;
5010 /* Make room for this entry. */
5011 s->size += htab->plt_entry_size;
5012 /* After the 8192nd entry, room for two entries
5014 if (htab->plt_type == PLT_OLD
5015 && (s->size - htab->plt_initial_entry_size)
5016 / htab->plt_entry_size
5017 > PLT_NUM_SINGLE_ENTRIES)
5018 s->size += htab->plt_entry_size;
5020 ent->plt.offset = plt_offset;
5023 /* We also need to make an entry in the .rela.plt section. */
5026 htab->relplt->size += sizeof (Elf32_External_Rela);
5028 if (htab->plt_type == PLT_VXWORKS)
5030 /* Allocate space for the unloaded relocations. */
5034 == (bfd_vma) htab->plt_initial_entry_size)
5036 htab->srelplt2->size
5037 += sizeof (Elf32_External_Rela)
5038 * VXWORKS_PLTRESOLVE_RELOCS;
5041 htab->srelplt2->size
5042 += sizeof (Elf32_External_Rela)
5043 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS;
5046 /* Every PLT entry has an associated GOT entry in
5048 htab->sgotplt->size += 4;
5054 ent->plt.offset = (bfd_vma) -1;
5057 ent->plt.offset = (bfd_vma) -1;
5061 h->plt.plist = NULL;
5067 h->plt.plist = NULL;
5071 eh = (struct ppc_elf_link_hash_entry *) h;
5072 if (eh->elf.got.refcount > 0)
5077 /* Make sure this symbol is output as a dynamic symbol. */
5078 if (eh->elf.dynindx == -1
5079 && !eh->elf.forced_local
5080 && htab->elf.dynamic_sections_created)
5082 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5087 if ((eh->tls_mask & TLS_TLS) != 0)
5089 if ((eh->tls_mask & TLS_LD) != 0)
5091 if (!eh->elf.def_dynamic)
5092 /* We'll just use htab->tlsld_got.offset. This should
5093 always be the case. It's a little odd if we have
5094 a local dynamic reloc against a non-local symbol. */
5095 htab->tlsld_got.refcount += 1;
5099 if ((eh->tls_mask & TLS_GD) != 0)
5101 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5103 if ((eh->tls_mask & TLS_DTPREL) != 0)
5109 eh->elf.got.offset = (bfd_vma) -1;
5112 eh->elf.got.offset = allocate_got (htab, need);
5113 dyn = htab->elf.dynamic_sections_created;
5115 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5116 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5117 || eh->elf.root.type != bfd_link_hash_undefweak))
5119 /* All the entries we allocated need relocs.
5120 Except LD only needs one. */
5121 if ((eh->tls_mask & TLS_LD) != 0
5122 && eh->elf.def_dynamic)
5124 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
5129 eh->elf.got.offset = (bfd_vma) -1;
5131 if (eh->dyn_relocs == NULL
5132 || !htab->elf.dynamic_sections_created)
5135 /* In the shared -Bsymbolic case, discard space allocated for
5136 dynamic pc-relative relocs against symbols which turn out to be
5137 defined in regular objects. For the normal shared case, discard
5138 space for relocs that have become local due to symbol visibility
5143 /* Relocs that use pc_count are those that appear on a call insn,
5144 or certain REL relocs (see must_be_dyn_reloc) that can be
5145 generated via assembly. We want calls to protected symbols to
5146 resolve directly to the function rather than going via the plt.
5147 If people want function pointer comparisons to work as expected
5148 then they should avoid writing weird assembly. */
5149 if (SYMBOL_CALLS_LOCAL (info, h))
5151 struct ppc_elf_dyn_relocs **pp;
5153 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5155 p->count -= p->pc_count;
5164 if (htab->is_vxworks)
5166 struct ppc_elf_dyn_relocs **pp;
5168 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5170 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5177 /* Discard relocs on undefined symbols that must be local. */
5178 if (eh->dyn_relocs != NULL
5179 && h->root.type == bfd_link_hash_undefined
5180 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5181 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5182 eh->dyn_relocs = NULL;
5184 /* Also discard relocs on undefined weak syms with non-default
5186 if (eh->dyn_relocs != NULL
5187 && h->root.type == bfd_link_hash_undefweak)
5189 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5190 eh->dyn_relocs = NULL;
5192 /* Make sure undefined weak symbols are output as a dynamic
5194 else if (h->dynindx == -1
5195 && !h->forced_local)
5197 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5202 else if (ELIMINATE_COPY_RELOCS)
5204 /* For the non-shared case, discard space for relocs against
5205 symbols which turn out to need copy relocs or are not
5211 /* Make sure this symbol is output as a dynamic symbol.
5212 Undefined weak syms won't yet be marked as dynamic. */
5213 if (h->dynindx == -1
5214 && !h->forced_local)
5216 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5220 /* If that succeeded, we know we'll be keeping all the
5222 if (h->dynindx != -1)
5226 eh->dyn_relocs = NULL;
5231 /* Finally, allocate space. */
5232 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5234 asection *sreloc = elf_section_data (p->sec)->sreloc;
5235 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5241 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5242 read-only sections. */
5245 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5247 if (h->root.type == bfd_link_hash_indirect)
5250 if (h->root.type == bfd_link_hash_warning)
5251 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5253 if (readonly_dynrelocs (h))
5255 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5257 /* Not an error, just cut short the traversal. */
5263 /* Set the sizes of the dynamic sections. */
5266 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5267 struct bfd_link_info *info)
5269 struct ppc_elf_link_hash_table *htab;
5275 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5278 htab = ppc_elf_hash_table (info);
5279 BFD_ASSERT (htab->elf.dynobj != NULL);
5281 if (elf_hash_table (info)->dynamic_sections_created)
5283 /* Set the contents of the .interp section to the interpreter. */
5284 if (info->executable)
5286 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5287 BFD_ASSERT (s != NULL);
5288 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5289 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5293 if (htab->plt_type == PLT_OLD)
5294 htab->got_header_size = 16;
5295 else if (htab->plt_type == PLT_NEW)
5296 htab->got_header_size = 12;
5298 /* Set up .got offsets for local syms, and space for local dynamic
5300 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5302 bfd_signed_vma *local_got;
5303 bfd_signed_vma *end_local_got;
5305 bfd_size_type locsymcount;
5306 Elf_Internal_Shdr *symtab_hdr;
5308 if (!is_ppc_elf (ibfd))
5311 for (s = ibfd->sections; s != NULL; s = s->next)
5313 struct ppc_elf_dyn_relocs *p;
5315 for (p = ((struct ppc_elf_dyn_relocs *)
5316 elf_section_data (s)->local_dynrel);
5320 if (!bfd_is_abs_section (p->sec)
5321 && bfd_is_abs_section (p->sec->output_section))
5323 /* Input section has been discarded, either because
5324 it is a copy of a linkonce section or due to
5325 linker script /DISCARD/, so we'll be discarding
5328 else if (htab->is_vxworks
5329 && strcmp (p->sec->output_section->name,
5332 /* Relocations in vxworks .tls_vars sections are
5333 handled specially by the loader. */
5335 else if (p->count != 0)
5337 elf_section_data (p->sec)->sreloc->size
5338 += p->count * sizeof (Elf32_External_Rela);
5339 if ((p->sec->output_section->flags
5340 & (SEC_READONLY | SEC_ALLOC))
5341 == (SEC_READONLY | SEC_ALLOC))
5342 info->flags |= DF_TEXTREL;
5347 local_got = elf_local_got_refcounts (ibfd);
5351 symtab_hdr = &elf_symtab_hdr (ibfd);
5352 locsymcount = symtab_hdr->sh_info;
5353 end_local_got = local_got + locsymcount;
5354 lgot_masks = (char *) end_local_got;
5355 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5358 unsigned int need = 0;
5359 if ((*lgot_masks & TLS_TLS) != 0)
5361 if ((*lgot_masks & TLS_GD) != 0)
5363 if ((*lgot_masks & TLS_LD) != 0)
5364 htab->tlsld_got.refcount += 1;
5365 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5367 if ((*lgot_masks & TLS_DTPREL) != 0)
5373 *local_got = (bfd_vma) -1;
5376 *local_got = allocate_got (htab, need);
5378 htab->relgot->size += (need
5379 * (sizeof (Elf32_External_Rela) / 4));
5383 *local_got = (bfd_vma) -1;
5386 /* Allocate space for global sym dynamic relocs. */
5387 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5389 if (htab->tlsld_got.refcount > 0)
5391 htab->tlsld_got.offset = allocate_got (htab, 8);
5393 htab->relgot->size += sizeof (Elf32_External_Rela);
5396 htab->tlsld_got.offset = (bfd_vma) -1;
5398 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5400 unsigned int g_o_t = 32768;
5402 /* If we haven't allocated the header, do so now. When we get here,
5403 for old plt/got the got size will be 0 to 32764 (not allocated),
5404 or 32780 to 65536 (header allocated). For new plt/got, the
5405 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5406 if (htab->got->size <= 32768)
5408 g_o_t = htab->got->size;
5409 if (htab->plt_type == PLT_OLD)
5411 htab->got->size += htab->got_header_size;
5414 htab->elf.hgot->root.u.def.value = g_o_t;
5417 if (htab->glink != NULL && htab->glink->size != 0)
5419 htab->glink_pltresolve = htab->glink->size;
5420 /* Space for the branch table. */
5421 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5422 /* Pad out to align the start of PLTresolve. */
5423 htab->glink->size += -htab->glink->size & 15;
5424 htab->glink->size += GLINK_PLTRESOLVE;
5426 if (htab->emit_stub_syms)
5428 struct elf_link_hash_entry *sh;
5429 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5430 TRUE, FALSE, FALSE);
5433 if (sh->root.type == bfd_link_hash_new)
5435 sh->root.type = bfd_link_hash_defined;
5436 sh->root.u.def.section = htab->glink;
5437 sh->root.u.def.value = htab->glink_pltresolve;
5438 sh->ref_regular = 1;
5439 sh->def_regular = 1;
5440 sh->ref_regular_nonweak = 1;
5441 sh->forced_local = 1;
5444 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5445 TRUE, FALSE, FALSE);
5448 if (sh->root.type == bfd_link_hash_new)
5450 sh->root.type = bfd_link_hash_defined;
5451 sh->root.u.def.section = htab->glink;
5452 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5453 sh->ref_regular = 1;
5454 sh->def_regular = 1;
5455 sh->ref_regular_nonweak = 1;
5456 sh->forced_local = 1;
5462 /* We've now determined the sizes of the various dynamic sections.
5463 Allocate memory for them. */
5465 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5467 bfd_boolean strip_section = TRUE;
5469 if ((s->flags & SEC_LINKER_CREATED) == 0)
5475 || s == htab->sgotplt
5477 || s == htab->dynbss
5478 || s == htab->dynsbss)
5480 /* We'd like to strip these sections if they aren't needed, but if
5481 we've exported dynamic symbols from them we must leave them.
5482 It's too late to tell BFD to get rid of the symbols. */
5483 if ((s == htab->plt || s == htab->got) && htab->elf.hplt != NULL)
5484 strip_section = FALSE;
5485 /* Strip this section if we don't need it; see the
5488 else if (s == htab->sdata[0].section
5489 || s == htab->sdata[1].section)
5491 /* Strip these too. */
5493 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5497 /* Remember whether there are any relocation sections. */
5500 /* We use the reloc_count field as a counter if we need
5501 to copy relocs into the output file. */
5507 /* It's not one of our sections, so don't allocate space. */
5511 if (s->size == 0 && strip_section)
5513 /* If we don't need this section, strip it from the
5514 output file. This is mostly to handle .rela.bss and
5515 .rela.plt. We must create both sections in
5516 create_dynamic_sections, because they must be created
5517 before the linker maps input sections to output
5518 sections. The linker does that before
5519 adjust_dynamic_symbol is called, and it is that
5520 function which decides whether anything needs to go
5521 into these sections. */
5522 s->flags |= SEC_EXCLUDE;
5526 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5529 /* Allocate memory for the section contents. */
5530 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5531 if (s->contents == NULL)
5535 if (htab->elf.dynamic_sections_created)
5537 /* Add some entries to the .dynamic section. We fill in the
5538 values later, in ppc_elf_finish_dynamic_sections, but we
5539 must add the entries now so that we get the correct size for
5540 the .dynamic section. The DT_DEBUG entry is filled in by the
5541 dynamic linker and used by the debugger. */
5542 #define add_dynamic_entry(TAG, VAL) \
5543 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5545 if (info->executable)
5547 if (!add_dynamic_entry (DT_DEBUG, 0))
5551 if (htab->plt != NULL && htab->plt->size != 0)
5553 if (!add_dynamic_entry (DT_PLTGOT, 0)
5554 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5555 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5556 || !add_dynamic_entry (DT_JMPREL, 0))
5560 if (htab->glink != NULL && htab->glink->size != 0)
5562 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5568 if (!add_dynamic_entry (DT_RELA, 0)
5569 || !add_dynamic_entry (DT_RELASZ, 0)
5570 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5574 /* If any dynamic relocs apply to a read-only section, then we
5575 need a DT_TEXTREL entry. */
5576 if ((info->flags & DF_TEXTREL) == 0)
5577 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5580 if ((info->flags & DF_TEXTREL) != 0)
5582 if (!add_dynamic_entry (DT_TEXTREL, 0))
5585 if (htab->is_vxworks
5586 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5589 #undef add_dynamic_entry
5594 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5597 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5599 if (h->plt.plist != NULL
5601 && (!h->pointer_equality_needed
5602 || !h->ref_regular_nonweak))
5605 return _bfd_elf_hash_symbol (h);
5608 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5610 static const int shared_stub_entry[] =
5612 0x7c0802a6, /* mflr 0 */
5613 0x429f0005, /* bcl 20, 31, .Lxxx */
5614 0x7d6802a6, /* mflr 11 */
5615 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
5616 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
5617 0x7c0803a6, /* mtlr 0 */
5618 0x7d6903a6, /* mtctr 11 */
5619 0x4e800420, /* bctr */
5622 static const int stub_entry[] =
5624 0x3d600000, /* lis 11,xxx@ha */
5625 0x396b0000, /* addi 11,11,xxx@l */
5626 0x7d6903a6, /* mtctr 11 */
5627 0x4e800420, /* bctr */
5631 ppc_elf_relax_section (bfd *abfd,
5633 struct bfd_link_info *link_info,
5638 struct one_fixup *next;
5644 Elf_Internal_Shdr *symtab_hdr;
5645 bfd_byte *contents = NULL;
5646 Elf_Internal_Sym *isymbuf = NULL;
5647 Elf_Internal_Rela *internal_relocs = NULL;
5648 Elf_Internal_Rela *irel, *irelend;
5649 struct one_fixup *fixups = NULL;
5650 unsigned changes = 0;
5651 struct ppc_elf_link_hash_table *htab;
5652 bfd_size_type trampoff;
5657 /* Nothing to do if there are no relocations, and no need to do
5658 anything with non-alloc sections. */
5659 if ((isec->flags & SEC_ALLOC) == 0
5660 || (isec->flags & SEC_RELOC) == 0
5661 || isec->reloc_count == 0)
5664 trampoff = (isec->size + 3) & (bfd_vma) -4;
5665 /* Space for a branch around any trampolines. */
5668 symtab_hdr = &elf_symtab_hdr (abfd);
5670 /* Get a copy of the native relocations. */
5671 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5672 link_info->keep_memory);
5673 if (internal_relocs == NULL)
5676 htab = ppc_elf_hash_table (link_info);
5677 got2 = bfd_get_section_by_name (abfd, ".got2");
5679 irelend = internal_relocs + isec->reloc_count;
5680 for (irel = internal_relocs; irel < irelend; irel++)
5682 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5683 bfd_vma symaddr, reladdr, toff, roff;
5685 struct one_fixup *f;
5686 size_t insn_offset = 0;
5687 bfd_vma max_branch_offset, val;
5690 unsigned char sym_type;
5695 case R_PPC_LOCAL24PC:
5696 case R_PPC_PLTREL24:
5697 max_branch_offset = 1 << 25;
5701 case R_PPC_REL14_BRTAKEN:
5702 case R_PPC_REL14_BRNTAKEN:
5703 max_branch_offset = 1 << 15;
5710 /* Get the value of the symbol referred to by the reloc. */
5711 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5713 /* A local symbol. */
5714 Elf_Internal_Sym *isym;
5716 /* Read this BFD's local symbols. */
5717 if (isymbuf == NULL)
5719 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5720 if (isymbuf == NULL)
5721 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5722 symtab_hdr->sh_info, 0,
5727 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5728 if (isym->st_shndx == SHN_UNDEF)
5729 continue; /* We can't do anything with undefined symbols. */
5730 else if (isym->st_shndx == SHN_ABS)
5731 tsec = bfd_abs_section_ptr;
5732 else if (isym->st_shndx == SHN_COMMON)
5733 tsec = bfd_com_section_ptr;
5735 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5737 toff = isym->st_value;
5738 sym_type = ELF_ST_TYPE (isym->st_info);
5742 /* Global symbol handling. */
5744 struct elf_link_hash_entry *h;
5746 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5747 h = elf_sym_hashes (abfd)[indx];
5749 while (h->root.type == bfd_link_hash_indirect
5750 || h->root.type == bfd_link_hash_warning)
5751 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5755 if (r_type == R_PPC_PLTREL24
5756 && htab->plt != NULL)
5758 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
5762 if (htab->plt_type == PLT_NEW)
5765 toff = ent->glink_offset;
5770 toff = ent->plt.offset;
5776 else if (h->root.type == bfd_link_hash_defined
5777 || h->root.type == bfd_link_hash_defweak)
5779 tsec = h->root.u.def.section;
5780 toff = h->root.u.def.value;
5788 /* If the branch and target are in the same section, you have
5789 no hope of adding stubs. We'll error out later should the
5794 /* There probably isn't any reason to handle symbols in
5795 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
5796 attribute for a code section, and we are only looking at
5797 branches. However, implement it correctly here as a
5798 reference for other target relax_section functions. */
5799 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
5801 /* At this stage in linking, no SEC_MERGE symbol has been
5802 adjusted, so all references to such symbols need to be
5803 passed through _bfd_merged_section_offset. (Later, in
5804 relocate_section, all SEC_MERGE symbols *except* for
5805 section symbols have been adjusted.)
5807 gas may reduce relocations against symbols in SEC_MERGE
5808 sections to a relocation against the section symbol when
5809 the original addend was zero. When the reloc is against
5810 a section symbol we should include the addend in the
5811 offset passed to _bfd_merged_section_offset, since the
5812 location of interest is the original symbol. On the
5813 other hand, an access to "sym+addend" where "sym" is not
5814 a section symbol should not include the addend; Such an
5815 access is presumed to be an offset from "sym"; The
5816 location of interest is just "sym". */
5817 if (sym_type == STT_SECTION)
5818 toff += irel->r_addend;
5820 toff = _bfd_merged_section_offset (abfd, &tsec,
5821 elf_section_data (tsec)->sec_info,
5824 if (sym_type != STT_SECTION)
5825 toff += irel->r_addend;
5827 /* PLTREL24 addends are special. */
5828 else if (r_type != R_PPC_PLTREL24)
5829 toff += irel->r_addend;
5831 /* Attempted -shared link of non-pic code loses. */
5832 if (tsec->output_section == NULL)
5835 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
5837 roff = irel->r_offset;
5838 reladdr = isec->output_section->vma + isec->output_offset + roff;
5840 /* If the branch is in range, no need to do anything. */
5841 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
5844 /* Look for an existing fixup to this address. */
5845 for (f = fixups; f ; f = f->next)
5846 if (f->tsec == tsec && f->toff == toff)
5852 unsigned long stub_rtype;
5854 val = trampoff - roff;
5855 if (val >= max_branch_offset)
5856 /* Oh dear, we can't reach a trampoline. Don't try to add
5857 one. We'll report an error later. */
5860 if (link_info->shared)
5862 size = 4 * ARRAY_SIZE (shared_stub_entry);
5864 stub_rtype = R_PPC_RELAX32PC;
5868 size = 4 * ARRAY_SIZE (stub_entry);
5870 stub_rtype = R_PPC_RELAX32;
5873 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
5874 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
5876 if (tsec == htab->plt
5877 || tsec == htab->glink)
5878 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
5880 /* Hijack the old relocation. Since we need two
5881 relocations for this use a "composite" reloc. */
5882 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
5884 irel->r_offset = trampoff + insn_offset;
5885 if (r_type == R_PPC_PLTREL24)
5888 /* Record the fixup so we don't do it again this section. */
5889 f = bfd_malloc (sizeof (*f));
5893 f->trampoff = trampoff;
5901 val = f->trampoff - roff;
5902 if (val >= max_branch_offset)
5905 /* Nop out the reloc, since we're finalizing things here. */
5906 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
5909 /* Get the section contents. */
5910 if (contents == NULL)
5912 /* Get cached copy if it exists. */
5913 if (elf_section_data (isec)->this_hdr.contents != NULL)
5914 contents = elf_section_data (isec)->this_hdr.contents;
5917 /* Go get them off disk. */
5918 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
5923 /* Fix up the existing branch to hit the trampoline. */
5924 hit_addr = contents + roff;
5928 case R_PPC_LOCAL24PC:
5929 case R_PPC_PLTREL24:
5930 t0 = bfd_get_32 (abfd, hit_addr);
5932 t0 |= val & 0x3fffffc;
5933 bfd_put_32 (abfd, t0, hit_addr);
5937 case R_PPC_REL14_BRTAKEN:
5938 case R_PPC_REL14_BRNTAKEN:
5939 t0 = bfd_get_32 (abfd, hit_addr);
5942 bfd_put_32 (abfd, t0, hit_addr);
5947 /* Write out the trampolines. */
5957 struct one_fixup *f = fixups;
5958 fixups = fixups->next;
5963 contents = bfd_realloc_or_free (contents, trampoff);
5964 if (contents == NULL)
5967 isec->size = (isec->size + 3) & (bfd_vma) -4;
5968 /* Branch around the trampolines. */
5969 val = B + trampoff - isec->size;
5970 dest = contents + isec->size;
5971 isec->size = trampoff;
5972 bfd_put_32 (abfd, val, dest);
5975 if (link_info->shared)
5977 stub = shared_stub_entry;
5978 size = ARRAY_SIZE (shared_stub_entry);
5983 size = ARRAY_SIZE (stub_entry);
5987 while (dest < contents + trampoff)
5989 bfd_put_32 (abfd, stub[i], dest);
5995 BFD_ASSERT (i == 0);
5999 && symtab_hdr->contents != (unsigned char *) isymbuf)
6001 if (! link_info->keep_memory)
6005 /* Cache the symbols for elf_link_input_bfd. */
6006 symtab_hdr->contents = (unsigned char *) isymbuf;
6010 if (contents != NULL
6011 && elf_section_data (isec)->this_hdr.contents != contents)
6013 if (!changes && !link_info->keep_memory)
6017 /* Cache the section contents for elf_link_input_bfd. */
6018 elf_section_data (isec)->this_hdr.contents = contents;
6024 /* Append sufficient NOP relocs so we can write out relocation
6025 information for the trampolines. */
6026 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6027 * sizeof (*new_relocs));
6032 memcpy (new_relocs, internal_relocs,
6033 isec->reloc_count * sizeof (*new_relocs));
6034 for (ix = changes; ix--;)
6036 irel = new_relocs + ix + isec->reloc_count;
6038 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6040 if (internal_relocs != elf_section_data (isec)->relocs)
6041 free (internal_relocs);
6042 elf_section_data (isec)->relocs = new_relocs;
6043 isec->reloc_count += changes;
6044 elf_section_data (isec)->rel_hdr.sh_size
6045 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
6047 else if (elf_section_data (isec)->relocs != internal_relocs)
6048 free (internal_relocs);
6050 *again = changes != 0;
6054 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6056 if (contents != NULL
6057 && elf_section_data (isec)->this_hdr.contents != contents)
6059 if (internal_relocs != NULL
6060 && elf_section_data (isec)->relocs != internal_relocs)
6061 free (internal_relocs);
6065 /* What to do when ld finds relocations against symbols defined in
6066 discarded sections. */
6069 ppc_elf_action_discarded (asection *sec)
6071 if (strcmp (".fixup", sec->name) == 0)
6074 if (strcmp (".got2", sec->name) == 0)
6077 return _bfd_elf_default_action_discarded (sec);
6080 /* Fill in the address for a pointer generated in a linker section. */
6083 elf_finish_pointer_linker_section (bfd *input_bfd,
6084 elf_linker_section_t *lsect,
6085 struct elf_link_hash_entry *h,
6087 const Elf_Internal_Rela *rel)
6089 elf_linker_section_pointers_t *linker_section_ptr;
6091 BFD_ASSERT (lsect != NULL);
6095 /* Handle global symbol. */
6096 struct ppc_elf_link_hash_entry *eh;
6098 eh = (struct ppc_elf_link_hash_entry *) h;
6099 BFD_ASSERT (eh->elf.def_regular);
6100 linker_section_ptr = eh->linker_section_pointer;
6104 /* Handle local symbol. */
6105 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6107 BFD_ASSERT (is_ppc_elf (input_bfd));
6108 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6109 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6112 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6115 BFD_ASSERT (linker_section_ptr != NULL);
6117 /* Offset will always be a multiple of four, so use the bottom bit
6118 as a "written" flag. */
6119 if ((linker_section_ptr->offset & 1) == 0)
6121 bfd_put_32 (lsect->section->owner,
6122 relocation + linker_section_ptr->addend,
6123 lsect->section->contents + linker_section_ptr->offset);
6124 linker_section_ptr->offset += 1;
6127 relocation = (lsect->section->output_offset
6128 + linker_section_ptr->offset - 1
6133 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6134 lsect->name, (long) relocation, (long) relocation);
6137 /* Subtract out the addend, because it will get added back in by the normal
6139 return relocation - linker_section_ptr->addend;
6142 /* The RELOCATE_SECTION function is called by the ELF backend linker
6143 to handle the relocations for a section.
6145 The relocs are always passed as Rela structures; if the section
6146 actually uses Rel structures, the r_addend field will always be
6149 This function is responsible for adjust the section contents as
6150 necessary, and (if using Rela relocs and generating a
6151 relocatable output file) adjusting the reloc addend as
6154 This function does not have to worry about setting the reloc
6155 address or the reloc symbol index.
6157 LOCAL_SYMS is a pointer to the swapped in local symbols.
6159 LOCAL_SECTIONS is an array giving the section in the input file
6160 corresponding to the st_shndx field of each local symbol.
6162 The global hash table entry for the global symbols can be found
6163 via elf_sym_hashes (input_bfd).
6165 When generating relocatable output, this function must handle
6166 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6167 going to be the section symbol corresponding to the output
6168 section, which means that the addend must be adjusted
6172 ppc_elf_relocate_section (bfd *output_bfd,
6173 struct bfd_link_info *info,
6175 asection *input_section,
6177 Elf_Internal_Rela *relocs,
6178 Elf_Internal_Sym *local_syms,
6179 asection **local_sections)
6181 Elf_Internal_Shdr *symtab_hdr;
6182 struct elf_link_hash_entry **sym_hashes;
6183 struct ppc_elf_link_hash_table *htab;
6184 Elf_Internal_Rela *rel;
6185 Elf_Internal_Rela *relend;
6186 Elf_Internal_Rela outrel;
6188 asection *got2, *sreloc = NULL;
6189 bfd_vma *local_got_offsets;
6190 bfd_boolean ret = TRUE;
6191 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6192 bfd_boolean is_vxworks_tls;
6195 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6196 "%ld relocations%s",
6197 input_bfd, input_section,
6198 (long) input_section->reloc_count,
6199 (info->relocatable) ? " (relocatable)" : "");
6202 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6204 /* Initialize howto table if not already done. */
6205 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6206 ppc_elf_howto_init ();
6208 htab = ppc_elf_hash_table (info);
6209 local_got_offsets = elf_local_got_offsets (input_bfd);
6210 symtab_hdr = &elf_symtab_hdr (input_bfd);
6211 sym_hashes = elf_sym_hashes (input_bfd);
6212 /* We have to handle relocations in vxworks .tls_vars sections
6213 specially, because the dynamic loader is 'weird'. */
6214 is_vxworks_tls = (htab->is_vxworks && info->shared
6215 && !strcmp (input_section->output_section->name,
6218 relend = relocs + input_section->reloc_count;
6219 for (; rel < relend; rel++)
6221 enum elf_ppc_reloc_type r_type;
6223 bfd_reloc_status_type r;
6224 Elf_Internal_Sym *sym;
6226 struct elf_link_hash_entry *h;
6227 const char *sym_name;
6228 reloc_howto_type *howto;
6229 unsigned long r_symndx;
6231 bfd_vma branch_bit, insn, from;
6232 bfd_boolean unresolved_reloc;
6234 unsigned int tls_type, tls_mask, tls_gd;
6236 r_type = ELF32_R_TYPE (rel->r_info);
6240 unresolved_reloc = FALSE;
6242 r_symndx = ELF32_R_SYM (rel->r_info);
6244 if (r_symndx < symtab_hdr->sh_info)
6246 sym = local_syms + r_symndx;
6247 sec = local_sections[r_symndx];
6248 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6250 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6254 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6255 r_symndx, symtab_hdr, sym_hashes,
6257 unresolved_reloc, warned);
6259 sym_name = h->root.root.string;
6262 if (sec != NULL && elf_discarded_section (sec))
6264 /* For relocs against symbols from removed linkonce sections,
6265 or sections discarded by a linker script, we just want the
6266 section contents zeroed. Avoid any special processing. */
6268 if (r_type < R_PPC_max)
6269 howto = ppc_elf_howto_table[r_type];
6270 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6276 if (info->relocatable)
6279 && r_type == R_PPC_PLTREL24
6280 && rel->r_addend >= 32768)
6282 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6283 addend specifies the GOT pointer offset within .got2. */
6284 rel->r_addend += got2->output_offset;
6289 /* TLS optimizations. Replace instruction sequences and relocs
6290 based on information we collected in tls_optimize. We edit
6291 RELOCS so that --emit-relocs will output something sensible
6292 for the final instruction stream. */
6296 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6297 else if (local_got_offsets != NULL)
6300 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
6301 tls_mask = lgot_masks[r_symndx];
6304 /* Ensure reloc mapping code below stays sane. */
6305 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6306 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6307 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6308 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6309 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6310 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6311 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6312 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6319 case R_PPC_GOT_TPREL16:
6320 case R_PPC_GOT_TPREL16_LO:
6322 && (tls_mask & TLS_TPREL) == 0)
6325 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6327 insn |= 0x3c020000; /* addis 0,2,0 */
6328 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6329 r_type = R_PPC_TPREL16_HA;
6330 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6336 && (tls_mask & TLS_TPREL) == 0)
6339 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6340 if ((insn & ((31 << 26) | (31 << 11)))
6341 == ((31 << 26) | (2 << 11)))
6342 rtra = insn & ((1 << 26) - (1 << 16));
6343 else if ((insn & ((31 << 26) | (31 << 16)))
6344 == ((31 << 26) | (2 << 16)))
6345 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6348 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6351 else if ((insn & (31 << 1)) == 23 << 1
6352 && ((insn & (31 << 6)) < 14 << 6
6353 || ((insn & (31 << 6)) >= 16 << 6
6354 && (insn & (31 << 6)) < 24 << 6)))
6355 /* load and store indexed -> dform. */
6356 insn = (32 | ((insn >> 6) & 31)) << 26;
6357 else if ((insn & (31 << 1)) == 21 << 1
6358 && (insn & (0x1a << 6)) == 0)
6359 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6360 insn = (((58 | ((insn >> 6) & 4)) << 26)
6361 | ((insn >> 6) & 1));
6362 else if ((insn & (31 << 1)) == 21 << 1
6363 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6365 insn = (58 << 26) | 2;
6369 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6370 r_type = R_PPC_TPREL16_LO;
6371 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6373 /* Was PPC_TLS which sits on insn boundary, now
6374 PPC_TPREL16_LO which is at low-order half-word. */
6375 rel->r_offset += d_offset;
6379 case R_PPC_GOT_TLSGD16_HI:
6380 case R_PPC_GOT_TLSGD16_HA:
6381 tls_gd = TLS_TPRELGD;
6382 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6386 case R_PPC_GOT_TLSLD16_HI:
6387 case R_PPC_GOT_TLSLD16_HA:
6388 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6391 if ((tls_mask & tls_gd) != 0)
6392 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6393 + R_PPC_GOT_TPREL16);
6396 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6397 rel->r_offset -= d_offset;
6398 r_type = R_PPC_NONE;
6400 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6404 case R_PPC_GOT_TLSGD16:
6405 case R_PPC_GOT_TLSGD16_LO:
6406 tls_gd = TLS_TPRELGD;
6407 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6411 case R_PPC_GOT_TLSLD16:
6412 case R_PPC_GOT_TLSLD16_LO:
6413 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6415 unsigned int insn1, insn2;
6419 offset = (bfd_vma) -1;
6420 /* If not using the newer R_PPC_TLSGD/LD to mark
6421 __tls_get_addr calls, we must trust that the call
6422 stays with its arg setup insns, ie. that the next
6423 reloc is the __tls_get_addr call associated with
6424 the current reloc. Edit both insns. */
6425 if (input_section->has_tls_get_addr_call
6427 && branch_reloc_hash_match (input_bfd, rel + 1,
6428 htab->tls_get_addr))
6429 offset = rel[1].r_offset;
6430 if ((tls_mask & tls_gd) != 0)
6433 insn1 = bfd_get_32 (output_bfd,
6434 contents + rel->r_offset - d_offset);
6435 insn1 &= (1 << 26) - 1;
6436 insn1 |= 32 << 26; /* lwz */
6437 if (offset != (bfd_vma) -1)
6440 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6442 insn2 = 0x7c631214; /* add 3,3,2 */
6443 bfd_put_32 (output_bfd, insn2, contents + offset);
6445 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6446 + R_PPC_GOT_TPREL16);
6447 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6452 insn1 = 0x3c620000; /* addis 3,2,0 */
6455 /* Was an LD reloc. */
6457 r_symndx < symtab_hdr->sh_info;
6459 if (local_sections[r_symndx] == sec)
6461 if (r_symndx >= symtab_hdr->sh_info)
6463 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6465 rel->r_addend -= (local_syms[r_symndx].st_value
6466 + sec->output_offset
6467 + sec->output_section->vma);
6469 r_type = R_PPC_TPREL16_HA;
6470 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6471 if (offset != (bfd_vma) -1)
6473 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6474 rel[1].r_offset = offset + d_offset;
6475 rel[1].r_addend = rel->r_addend;
6476 insn2 = 0x38630000; /* addi 3,3,0 */
6477 bfd_put_32 (output_bfd, insn2, contents + offset);
6480 bfd_put_32 (output_bfd, insn1,
6481 contents + rel->r_offset - d_offset);
6484 /* We changed the symbol on an LD reloc. Start over
6485 in order to get h, sym, sec etc. right. */
6493 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
6496 bfd_vma offset = rel->r_offset;
6498 if ((tls_mask & TLS_TPRELGD) != 0)
6501 r_type = R_PPC_NONE;
6502 insn2 = 0x7c631214; /* add 3,3,2 */
6507 r_type = R_PPC_TPREL16_LO;
6508 rel->r_offset += d_offset;
6509 insn2 = 0x38630000; /* addi 3,3,0 */
6511 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6512 bfd_put_32 (output_bfd, insn2, contents + offset);
6513 /* Zap the reloc on the _tls_get_addr call too. */
6514 BFD_ASSERT (offset == rel[1].r_offset);
6515 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6521 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
6526 r_symndx < symtab_hdr->sh_info;
6528 if (local_sections[r_symndx] == sec)
6530 if (r_symndx >= symtab_hdr->sh_info)
6532 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6534 rel->r_addend -= (local_syms[r_symndx].st_value
6535 + sec->output_offset
6536 + sec->output_section->vma);
6538 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6539 rel->r_offset += d_offset;
6540 insn2 = 0x38630000; /* addi 3,3,0 */
6541 bfd_put_32 (output_bfd, insn2,
6542 contents + rel->r_offset - d_offset);
6543 /* Zap the reloc on the _tls_get_addr call too. */
6544 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
6545 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6553 /* Handle other relocations that tweak non-addend part of insn. */
6560 /* Branch taken prediction relocations. */
6561 case R_PPC_ADDR14_BRTAKEN:
6562 case R_PPC_REL14_BRTAKEN:
6563 branch_bit = BRANCH_PREDICT_BIT;
6566 /* Branch not taken prediction relocations. */
6567 case R_PPC_ADDR14_BRNTAKEN:
6568 case R_PPC_REL14_BRNTAKEN:
6569 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6570 insn &= ~BRANCH_PREDICT_BIT;
6573 from = (rel->r_offset
6574 + input_section->output_offset
6575 + input_section->output_section->vma);
6577 /* Invert 'y' bit if not the default. */
6578 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6579 insn ^= BRANCH_PREDICT_BIT;
6581 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6585 addend = rel->r_addend;
6588 if (r_type < R_PPC_max)
6589 howto = ppc_elf_howto_table[r_type];
6593 (*_bfd_error_handler)
6594 (_("%B: unknown relocation type %d for symbol %s"),
6595 input_bfd, (int) r_type, sym_name);
6597 bfd_set_error (bfd_error_bad_value);
6605 case R_PPC_EMB_MRKREF:
6606 case R_PPC_GNU_VTINHERIT:
6607 case R_PPC_GNU_VTENTRY:
6610 /* GOT16 relocations. Like an ADDR16 using the symbol's
6611 address in the GOT as relocation value instead of the
6612 symbol's value itself. Also, create a GOT entry for the
6613 symbol and put the symbol value there. */
6614 case R_PPC_GOT_TLSGD16:
6615 case R_PPC_GOT_TLSGD16_LO:
6616 case R_PPC_GOT_TLSGD16_HI:
6617 case R_PPC_GOT_TLSGD16_HA:
6618 tls_type = TLS_TLS | TLS_GD;
6621 case R_PPC_GOT_TLSLD16:
6622 case R_PPC_GOT_TLSLD16_LO:
6623 case R_PPC_GOT_TLSLD16_HI:
6624 case R_PPC_GOT_TLSLD16_HA:
6625 tls_type = TLS_TLS | TLS_LD;
6628 case R_PPC_GOT_TPREL16:
6629 case R_PPC_GOT_TPREL16_LO:
6630 case R_PPC_GOT_TPREL16_HI:
6631 case R_PPC_GOT_TPREL16_HA:
6632 tls_type = TLS_TLS | TLS_TPREL;
6635 case R_PPC_GOT_DTPREL16:
6636 case R_PPC_GOT_DTPREL16_LO:
6637 case R_PPC_GOT_DTPREL16_HI:
6638 case R_PPC_GOT_DTPREL16_HA:
6639 tls_type = TLS_TLS | TLS_DTPREL;
6643 case R_PPC_GOT16_LO:
6644 case R_PPC_GOT16_HI:
6645 case R_PPC_GOT16_HA:
6649 /* Relocation is to the entry for this symbol in the global
6655 if (htab->got == NULL)
6659 if (tls_type == (TLS_TLS | TLS_LD)
6661 || !h->def_dynamic))
6662 offp = &htab->tlsld_got.offset;
6666 dyn = htab->elf.dynamic_sections_created;
6667 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6669 && SYMBOL_REFERENCES_LOCAL (info, h)))
6670 /* This is actually a static link, or it is a
6671 -Bsymbolic link and the symbol is defined
6672 locally, or the symbol was forced to be local
6673 because of a version file. */
6678 unresolved_reloc = FALSE;
6680 offp = &h->got.offset;
6684 if (local_got_offsets == NULL)
6686 offp = &local_got_offsets[r_symndx];
6689 /* The offset must always be a multiple of 4. We use the
6690 least significant bit to record whether we have already
6691 processed this entry. */
6697 unsigned int tls_m = (tls_mask
6698 & (TLS_LD | TLS_GD | TLS_DTPREL
6699 | TLS_TPREL | TLS_TPRELGD));
6701 if (offp == &htab->tlsld_got.offset)
6707 /* We might have multiple got entries for this sym.
6708 Initialize them all. */
6713 if ((tls_m & TLS_LD) != 0)
6715 tls_ty = TLS_TLS | TLS_LD;
6718 else if ((tls_m & TLS_GD) != 0)
6720 tls_ty = TLS_TLS | TLS_GD;
6723 else if ((tls_m & TLS_DTPREL) != 0)
6725 tls_ty = TLS_TLS | TLS_DTPREL;
6726 tls_m &= ~TLS_DTPREL;
6728 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
6730 tls_ty = TLS_TLS | TLS_TPREL;
6734 /* Generate relocs for the dynamic linker. */
6735 if ((info->shared || indx != 0)
6736 && (offp == &htab->tlsld_got.offset
6738 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6739 || h->root.type != bfd_link_hash_undefweak))
6741 outrel.r_offset = (htab->got->output_section->vma
6742 + htab->got->output_offset
6744 outrel.r_addend = 0;
6745 if (tls_ty & (TLS_LD | TLS_GD))
6747 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
6748 if (tls_ty == (TLS_TLS | TLS_GD))
6750 loc = htab->relgot->contents;
6751 loc += (htab->relgot->reloc_count++
6752 * sizeof (Elf32_External_Rela));
6753 bfd_elf32_swap_reloca_out (output_bfd,
6755 outrel.r_offset += 4;
6757 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6760 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
6761 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
6762 else if (tls_ty == (TLS_TLS | TLS_TPREL))
6763 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
6765 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
6767 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
6768 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
6770 outrel.r_addend += relocation;
6771 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
6772 outrel.r_addend -= htab->elf.tls_sec->vma;
6774 loc = htab->relgot->contents;
6775 loc += (htab->relgot->reloc_count++
6776 * sizeof (Elf32_External_Rela));
6777 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
6780 /* Init the .got section contents if we're not
6781 emitting a reloc. */
6784 bfd_vma value = relocation;
6786 if (tls_ty == (TLS_TLS | TLS_LD))
6788 else if (tls_ty != 0)
6790 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
6791 if (tls_ty == (TLS_TLS | TLS_TPREL))
6792 value += DTP_OFFSET - TP_OFFSET;
6794 if (tls_ty == (TLS_TLS | TLS_GD))
6796 bfd_put_32 (output_bfd, value,
6797 htab->got->contents + off + 4);
6801 bfd_put_32 (output_bfd, value,
6802 htab->got->contents + off);
6806 if (tls_ty & (TLS_LD | TLS_GD))
6815 if (off >= (bfd_vma) -2)
6818 if ((tls_type & TLS_TLS) != 0)
6820 if (tls_type != (TLS_TLS | TLS_LD))
6822 if ((tls_mask & TLS_LD) != 0
6824 || !h->def_dynamic))
6826 if (tls_type != (TLS_TLS | TLS_GD))
6828 if ((tls_mask & TLS_GD) != 0)
6830 if (tls_type != (TLS_TLS | TLS_DTPREL))
6832 if ((tls_mask & TLS_DTPREL) != 0)
6839 relocation = (htab->got->output_section->vma
6840 + htab->got->output_offset
6842 - SYM_VAL (htab->elf.hgot));
6844 /* Addends on got relocations don't make much sense.
6845 x+off@got is actually x@got+off, and since the got is
6846 generated by a hash table traversal, the value in the
6847 got at entry m+n bears little relation to the entry m. */
6849 (*_bfd_error_handler)
6850 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
6853 (long) rel->r_offset,
6859 /* Relocations that need no special processing. */
6860 case R_PPC_LOCAL24PC:
6861 /* It makes no sense to point a local relocation
6862 at a symbol not in this object. */
6863 if (unresolved_reloc)
6865 if (! (*info->callbacks->undefined_symbol) (info,
6866 h->root.root.string,
6876 case R_PPC_DTPREL16:
6877 case R_PPC_DTPREL16_LO:
6878 case R_PPC_DTPREL16_HI:
6879 case R_PPC_DTPREL16_HA:
6880 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6883 /* Relocations that may need to be propagated if this is a shared
6886 case R_PPC_TPREL16_LO:
6887 case R_PPC_TPREL16_HI:
6888 case R_PPC_TPREL16_HA:
6889 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6890 /* The TPREL16 relocs shouldn't really be used in shared
6891 libs as they will result in DT_TEXTREL being set, but
6892 support them anyway. */
6896 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
6899 case R_PPC_DTPREL32:
6900 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
6903 case R_PPC_DTPMOD32:
6909 case R_PPC_REL16_LO:
6910 case R_PPC_REL16_HI:
6911 case R_PPC_REL16_HA:
6915 if (h == NULL || h == htab->elf.hgot)
6921 case R_PPC_ADDR16_LO:
6922 case R_PPC_ADDR16_HI:
6923 case R_PPC_ADDR16_HA:
6930 case R_PPC_REL14_BRTAKEN:
6931 case R_PPC_REL14_BRNTAKEN:
6932 /* If these relocations are not to a named symbol, they can be
6933 handled right here, no need to bother the dynamic linker. */
6934 if (SYMBOL_CALLS_LOCAL (info, h)
6935 || h == htab->elf.hgot)
6941 case R_PPC_ADDR14_BRTAKEN:
6942 case R_PPC_ADDR14_BRNTAKEN:
6943 if (h != NULL && !info->shared)
6948 if ((input_section->flags & SEC_ALLOC) == 0
6954 && ((h->root.type == bfd_link_hash_undefined
6955 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6956 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6957 || (h->root.type == bfd_link_hash_undefweak
6958 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
6959 && (must_be_dyn_reloc (info, r_type)
6960 || !SYMBOL_CALLS_LOCAL (info, h)))
6961 || (ELIMINATE_COPY_RELOCS
6966 && !h->def_regular))
6971 fprintf (stderr, "ppc_elf_relocate_section needs to "
6972 "create relocation for %s\n",
6973 (h && h->root.root.string
6974 ? h->root.root.string : "<unknown>"));
6977 /* When generating a shared object, these relocations
6978 are copied into the output file to be resolved at run
6982 sreloc = _bfd_elf_get_dynamic_reloc_section
6983 (input_bfd, input_section, /*rela?*/ TRUE);
6990 _bfd_elf_section_offset (output_bfd, info, input_section,
6992 if (outrel.r_offset == (bfd_vma) -1
6993 || outrel.r_offset == (bfd_vma) -2)
6994 skip = (int) outrel.r_offset;
6995 outrel.r_offset += (input_section->output_section->vma
6996 + input_section->output_offset);
6999 memset (&outrel, 0, sizeof outrel);
7001 && (h->root.type == bfd_link_hash_undefined
7002 || h->root.type == bfd_link_hash_undefweak))
7003 || !SYMBOL_REFERENCES_LOCAL (info, h))
7005 unresolved_reloc = FALSE;
7006 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7007 outrel.r_addend = rel->r_addend;
7011 outrel.r_addend = relocation + rel->r_addend;
7013 if (r_type == R_PPC_ADDR32)
7014 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7019 if (r_symndx == 0 || bfd_is_abs_section (sec))
7021 else if (sec == NULL || sec->owner == NULL)
7023 bfd_set_error (bfd_error_bad_value);
7030 /* We are turning this relocation into one
7031 against a section symbol. It would be
7032 proper to subtract the symbol's value,
7033 osec->vma, from the emitted reloc addend,
7034 but ld.so expects buggy relocs. */
7035 osec = sec->output_section;
7036 indx = elf_section_data (osec)->dynindx;
7039 osec = htab->elf.text_index_section;
7040 indx = elf_section_data (osec)->dynindx;
7042 BFD_ASSERT (indx != 0);
7045 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7046 indx, osec->name, osec->flags,
7047 h->root.root.string);
7051 outrel.r_info = ELF32_R_INFO (indx, r_type);
7055 loc = sreloc->contents;
7056 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7057 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7062 /* This reloc will be computed at runtime. We clear the memory
7063 so that it contains predictable value. */
7065 && ((input_section->flags & SEC_ALLOC) != 0
7066 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7068 relocation = howto->pc_relative ? outrel.r_offset : 0;
7075 case R_PPC_RELAX32PC_PLT:
7076 case R_PPC_RELAX32_PLT:
7078 struct plt_entry *ent = find_plt_ent (h, got2, addend);
7080 if (htab->plt_type == PLT_NEW)
7081 relocation = (htab->glink->output_section->vma
7082 + htab->glink->output_offset
7083 + ent->glink_offset);
7085 relocation = (htab->plt->output_section->vma
7086 + htab->plt->output_offset
7089 if (r_type == R_PPC_RELAX32_PLT)
7093 case R_PPC_RELAX32PC:
7094 relocation -= (input_section->output_section->vma
7095 + input_section->output_offset
7096 + rel->r_offset - 4);
7105 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7106 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7108 /* We're clearing the bits for R_PPC_ADDR16_HA
7109 and R_PPC_ADDR16_LO here. */
7113 /* t0 is HA, t1 is LO */
7114 relocation += addend;
7115 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7116 t1 |= relocation & 0xffff;
7118 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7119 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7121 /* Rewrite the reloc and convert one of the trailing nop
7122 relocs to describe this relocation. */
7123 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7124 /* The relocs are at the bottom 2 bytes */
7125 rel[0].r_offset += 2;
7126 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7127 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7128 rel[1].r_offset += 4;
7129 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7134 /* Indirect .sdata relocation. */
7135 case R_PPC_EMB_SDAI16:
7136 BFD_ASSERT (htab->sdata[0].section != NULL);
7138 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7139 h, relocation, rel);
7142 /* Indirect .sdata2 relocation. */
7143 case R_PPC_EMB_SDA2I16:
7144 BFD_ASSERT (htab->sdata[1].section != NULL);
7146 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7147 h, relocation, rel);
7150 /* Handle the TOC16 reloc. We want to use the offset within the .got
7151 section, not the actual VMA. This is appropriate when generating
7152 an embedded ELF object, for which the .got section acts like the
7153 AIX .toc section. */
7154 case R_PPC_TOC16: /* phony GOT16 relocations */
7155 if (sec == NULL || sec->output_section == NULL)
7157 unresolved_reloc = TRUE;
7160 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7161 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7163 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7166 case R_PPC_PLTREL24:
7167 /* Relocation is to the entry for this symbol in the
7168 procedure linkage table. */
7170 struct plt_entry *ent = find_plt_ent (h, got2, addend);
7174 || htab->plt == NULL)
7176 /* We didn't make a PLT entry for this symbol. This
7177 happens when statically linking PIC code, or when
7178 using -Bsymbolic. */
7182 unresolved_reloc = FALSE;
7183 if (htab->plt_type == PLT_NEW)
7184 relocation = (htab->glink->output_section->vma
7185 + htab->glink->output_offset
7186 + ent->glink_offset);
7188 relocation = (htab->plt->output_section->vma
7189 + htab->plt->output_offset
7194 /* Relocate against _SDA_BASE_. */
7195 case R_PPC_SDAREL16:
7199 if (sec == NULL || sec->output_section == NULL)
7201 unresolved_reloc = TRUE;
7205 name = bfd_get_section_name (abfd, sec->output_section);
7206 if (! ((CONST_STRNEQ (name, ".sdata")
7207 && (name[6] == 0 || name[6] == '.'))
7208 || (CONST_STRNEQ (name, ".sbss")
7209 && (name[5] == 0 || name[5] == '.'))))
7211 (*_bfd_error_handler)
7212 (_("%B: the target (%s) of a %s relocation is "
7213 "in the wrong output section (%s)"),
7219 addend -= SYM_VAL (htab->sdata[0].sym);
7223 /* Relocate against _SDA2_BASE_. */
7224 case R_PPC_EMB_SDA2REL:
7228 if (sec == NULL || sec->output_section == NULL)
7230 unresolved_reloc = TRUE;
7234 name = bfd_get_section_name (abfd, sec->output_section);
7235 if (! (CONST_STRNEQ (name, ".sdata2")
7236 || CONST_STRNEQ (name, ".sbss2")))
7238 (*_bfd_error_handler)
7239 (_("%B: the target (%s) of a %s relocation is "
7240 "in the wrong output section (%s)"),
7246 bfd_set_error (bfd_error_bad_value);
7250 addend -= SYM_VAL (htab->sdata[1].sym);
7254 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7255 case R_PPC_EMB_SDA21:
7256 case R_PPC_EMB_RELSDA:
7261 if (sec == NULL || sec->output_section == NULL)
7263 unresolved_reloc = TRUE;
7267 name = bfd_get_section_name (abfd, sec->output_section);
7268 if (((CONST_STRNEQ (name, ".sdata")
7269 && (name[6] == 0 || name[6] == '.'))
7270 || (CONST_STRNEQ (name, ".sbss")
7271 && (name[5] == 0 || name[5] == '.'))))
7274 addend -= SYM_VAL (htab->sdata[0].sym);
7276 else if (CONST_STRNEQ (name, ".sdata2")
7277 || CONST_STRNEQ (name, ".sbss2"))
7280 addend -= SYM_VAL (htab->sdata[1].sym);
7282 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7283 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7289 (*_bfd_error_handler)
7290 (_("%B: the target (%s) of a %s relocation is "
7291 "in the wrong output section (%s)"),
7297 bfd_set_error (bfd_error_bad_value);
7302 if (r_type == R_PPC_EMB_SDA21)
7303 { /* fill in register field */
7304 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7305 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7306 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7311 /* Relocate against the beginning of the section. */
7313 case R_PPC_SECTOFF_LO:
7314 case R_PPC_SECTOFF_HI:
7315 case R_PPC_SECTOFF_HA:
7316 if (sec == NULL || sec->output_section == NULL)
7318 unresolved_reloc = TRUE;
7321 addend -= sec->output_section->vma;
7324 /* Negative relocations. */
7325 case R_PPC_EMB_NADDR32:
7326 case R_PPC_EMB_NADDR16:
7327 case R_PPC_EMB_NADDR16_LO:
7328 case R_PPC_EMB_NADDR16_HI:
7329 case R_PPC_EMB_NADDR16_HA:
7330 addend -= 2 * relocation;
7334 case R_PPC_GLOB_DAT:
7335 case R_PPC_JMP_SLOT:
7336 case R_PPC_RELATIVE:
7338 case R_PPC_PLTREL32:
7339 case R_PPC_PLT16_LO:
7340 case R_PPC_PLT16_HI:
7341 case R_PPC_PLT16_HA:
7343 case R_PPC_EMB_RELSEC16:
7344 case R_PPC_EMB_RELST_LO:
7345 case R_PPC_EMB_RELST_HI:
7346 case R_PPC_EMB_RELST_HA:
7347 case R_PPC_EMB_BIT_FLD:
7348 (*_bfd_error_handler)
7349 (_("%B: relocation %s is not yet supported for symbol %s."),
7354 bfd_set_error (bfd_error_invalid_operation);
7359 /* Do any further special processing. */
7365 case R_PPC_ADDR16_HA:
7366 case R_PPC_REL16_HA:
7367 case R_PPC_SECTOFF_HA:
7368 case R_PPC_TPREL16_HA:
7369 case R_PPC_DTPREL16_HA:
7370 case R_PPC_EMB_NADDR16_HA:
7371 case R_PPC_EMB_RELST_HA:
7372 /* It's just possible that this symbol is a weak symbol
7373 that's not actually defined anywhere. In that case,
7374 'sec' would be NULL, and we should leave the symbol
7375 alone (it will be set to zero elsewhere in the link). */
7380 case R_PPC_PLT16_HA:
7381 case R_PPC_GOT16_HA:
7382 case R_PPC_GOT_TLSGD16_HA:
7383 case R_PPC_GOT_TLSLD16_HA:
7384 case R_PPC_GOT_TPREL16_HA:
7385 case R_PPC_GOT_DTPREL16_HA:
7386 /* Add 0x10000 if sign bit in 0:15 is set.
7387 Bits 0:15 are not used. */
7393 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7394 "offset = %ld, addend = %ld\n",
7399 (long) rel->r_offset,
7403 if (unresolved_reloc
7404 && !((input_section->flags & SEC_DEBUGGING) != 0
7407 (*_bfd_error_handler)
7408 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7411 (long) rel->r_offset,
7417 r = _bfd_final_link_relocate (howto,
7425 if (r != bfd_reloc_ok)
7427 if (r == bfd_reloc_overflow)
7432 && h->root.type == bfd_link_hash_undefweak
7433 && howto->pc_relative)
7435 /* Assume this is a call protected by other code that
7436 detect the symbol is undefined. If this is the case,
7437 we can safely ignore the overflow. If not, the
7438 program is hosed anyway, and a little warning isn't
7444 if (! (*info->callbacks->reloc_overflow) (info,
7445 (h ? &h->root : NULL),
7456 (*_bfd_error_handler)
7457 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
7458 input_bfd, input_section,
7459 (long) rel->r_offset, howto->name, sym_name, (int) r);
7466 fprintf (stderr, "\n");
7472 #define PPC_LO(v) ((v) & 0xffff)
7473 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7474 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7476 /* Finish up dynamic symbol handling. We set the contents of various
7477 dynamic sections here. */
7480 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
7481 struct bfd_link_info *info,
7482 struct elf_link_hash_entry *h,
7483 Elf_Internal_Sym *sym)
7485 struct ppc_elf_link_hash_table *htab;
7486 struct plt_entry *ent;
7487 bfd_boolean doneone;
7490 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
7491 h->root.root.string);
7494 htab = ppc_elf_hash_table (info);
7495 BFD_ASSERT (htab->elf.dynobj != NULL);
7498 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7499 if (ent->plt.offset != (bfd_vma) -1)
7503 Elf_Internal_Rela rela;
7505 bfd_vma reloc_index;
7507 if (htab->plt_type == PLT_NEW)
7508 reloc_index = ent->plt.offset / 4;
7511 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
7512 / htab->plt_slot_size);
7513 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
7514 && htab->plt_type == PLT_OLD)
7515 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
7518 /* This symbol has an entry in the procedure linkage table.
7520 if (htab->plt_type == PLT_VXWORKS)
7523 const bfd_vma *plt_entry;
7525 /* The first three entries in .got.plt are reserved. */
7526 got_offset = (reloc_index + 3) * 4;
7528 /* Use the right PLT. */
7529 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
7530 : ppc_elf_vxworks_plt_entry;
7532 /* Fill in the .plt on VxWorks. */
7535 bfd_put_32 (output_bfd,
7536 plt_entry[0] | PPC_HA (got_offset),
7537 htab->plt->contents + ent->plt.offset + 0);
7538 bfd_put_32 (output_bfd,
7539 plt_entry[1] | PPC_LO (got_offset),
7540 htab->plt->contents + ent->plt.offset + 4);
7544 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
7546 bfd_put_32 (output_bfd,
7547 plt_entry[0] | PPC_HA (got_loc),
7548 htab->plt->contents + ent->plt.offset + 0);
7549 bfd_put_32 (output_bfd,
7550 plt_entry[1] | PPC_LO (got_loc),
7551 htab->plt->contents + ent->plt.offset + 4);
7554 bfd_put_32 (output_bfd, plt_entry[2],
7555 htab->plt->contents + ent->plt.offset + 8);
7556 bfd_put_32 (output_bfd, plt_entry[3],
7557 htab->plt->contents + ent->plt.offset + 12);
7559 /* This instruction is an immediate load. The value loaded is
7560 the byte offset of the R_PPC_JMP_SLOT relocation from the
7561 start of the .rela.plt section. The value is stored in the
7562 low-order 16 bits of the load instruction. */
7563 /* NOTE: It appears that this is now an index rather than a
7564 prescaled offset. */
7565 bfd_put_32 (output_bfd,
7566 plt_entry[4] | reloc_index,
7567 htab->plt->contents + ent->plt.offset + 16);
7568 /* This instruction is a PC-relative branch whose target is
7569 the start of the PLT section. The address of this branch
7570 instruction is 20 bytes beyond the start of this PLT entry.
7571 The address is encoded in bits 6-29, inclusive. The value
7572 stored is right-shifted by two bits, permitting a 26-bit
7574 bfd_put_32 (output_bfd,
7576 | (-(ent->plt.offset + 20) & 0x03fffffc)),
7577 htab->plt->contents + ent->plt.offset + 20);
7578 bfd_put_32 (output_bfd, plt_entry[6],
7579 htab->plt->contents + ent->plt.offset + 24);
7580 bfd_put_32 (output_bfd, plt_entry[7],
7581 htab->plt->contents + ent->plt.offset + 28);
7583 /* Fill in the GOT entry corresponding to this PLT slot with
7584 the address immediately after the the "bctr" instruction
7585 in this PLT entry. */
7586 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
7587 + htab->plt->output_offset
7588 + ent->plt.offset + 16),
7589 htab->sgotplt->contents + got_offset);
7593 /* Fill in a couple of entries in .rela.plt.unloaded. */
7594 loc = htab->srelplt2->contents
7595 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
7596 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
7597 * sizeof (Elf32_External_Rela));
7599 /* Provide the @ha relocation for the first instruction. */
7600 rela.r_offset = (htab->plt->output_section->vma
7601 + htab->plt->output_offset
7602 + ent->plt.offset + 2);
7603 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
7605 rela.r_addend = got_offset;
7606 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7607 loc += sizeof (Elf32_External_Rela);
7609 /* Provide the @l relocation for the second instruction. */
7610 rela.r_offset = (htab->plt->output_section->vma
7611 + htab->plt->output_offset
7612 + ent->plt.offset + 6);
7613 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
7615 rela.r_addend = got_offset;
7616 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7617 loc += sizeof (Elf32_External_Rela);
7619 /* Provide a relocation for the GOT entry corresponding to this
7620 PLT slot. Point it at the middle of the .plt entry. */
7621 rela.r_offset = (htab->sgotplt->output_section->vma
7622 + htab->sgotplt->output_offset
7624 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
7626 rela.r_addend = ent->plt.offset + 16;
7627 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7630 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
7631 In particular, the offset for the relocation is not the
7632 address of the PLT entry for this function, as specified
7633 by the ABI. Instead, the offset is set to the address of
7634 the GOT slot for this function. See EABI 4.4.4.1. */
7635 rela.r_offset = (htab->sgotplt->output_section->vma
7636 + htab->sgotplt->output_offset
7642 rela.r_offset = (htab->plt->output_section->vma
7643 + htab->plt->output_offset
7645 if (htab->plt_type == PLT_OLD)
7647 /* We don't need to fill in the .plt. The ppc dynamic
7648 linker will fill it in. */
7652 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
7653 + htab->glink->output_section->vma
7654 + htab->glink->output_offset);
7655 bfd_put_32 (output_bfd, val,
7656 htab->plt->contents + ent->plt.offset);
7660 /* Fill in the entry in the .rela.plt section. */
7661 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
7664 loc = (htab->relplt->contents
7665 + reloc_index * sizeof (Elf32_External_Rela));
7666 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7668 if (!h->def_regular)
7670 /* Mark the symbol as undefined, rather than as
7671 defined in the .plt section. Leave the value if
7672 there were any relocations where pointer equality
7673 matters (this is a clue for the dynamic linker, to
7674 make function pointer comparisons work between an
7675 application and shared library), otherwise set it
7677 sym->st_shndx = SHN_UNDEF;
7678 if (!h->pointer_equality_needed)
7680 else if (!h->ref_regular_nonweak)
7682 /* This breaks function pointer comparisons, but
7683 that is better than breaking tests for a NULL
7684 function pointer. */
7691 if (htab->plt_type == PLT_NEW)
7696 plt = (ent->plt.offset
7697 + htab->plt->output_section->vma
7698 + htab->plt->output_offset);
7699 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
7701 if (info->shared || info->pie)
7705 if (ent->addend >= 32768)
7707 + ent->sec->output_section->vma
7708 + ent->sec->output_offset);
7709 else if (htab->elf.hgot != NULL)
7710 got = SYM_VAL (htab->elf.hgot);
7714 if (plt + 0x8000 < 0x10000)
7716 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7718 bfd_put_32 (output_bfd, MTCTR_11, p);
7720 bfd_put_32 (output_bfd, BCTR, p);
7722 bfd_put_32 (output_bfd, NOP, p);
7727 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7729 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7731 bfd_put_32 (output_bfd, MTCTR_11, p);
7733 bfd_put_32 (output_bfd, BCTR, p);
7739 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7741 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7743 bfd_put_32 (output_bfd, MTCTR_11, p);
7745 bfd_put_32 (output_bfd, BCTR, p);
7748 /* We only need one non-PIC glink stub. */
7759 Elf_Internal_Rela rela;
7762 /* This symbols needs a copy reloc. Set it up. */
7765 fprintf (stderr, ", copy");
7768 BFD_ASSERT (h->dynindx != -1);
7770 if (ppc_elf_hash_entry (h)->has_sda_refs)
7774 BFD_ASSERT (s != NULL);
7776 rela.r_offset = SYM_VAL (h);
7777 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
7779 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
7780 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7784 fprintf (stderr, "\n");
7787 /* Mark some specially defined symbols as absolute. */
7788 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
7789 || (!htab->is_vxworks
7790 && (h == htab->elf.hgot
7791 || strcmp (h->root.root.string,
7792 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
7793 sym->st_shndx = SHN_ABS;
7798 static enum elf_reloc_type_class
7799 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
7801 switch (ELF32_R_TYPE (rela->r_info))
7803 case R_PPC_RELATIVE:
7804 return reloc_class_relative;
7807 case R_PPC_JMP_SLOT:
7808 return reloc_class_plt;
7810 return reloc_class_copy;
7812 return reloc_class_normal;
7816 /* Finish up the dynamic sections. */
7819 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
7820 struct bfd_link_info *info)
7824 struct ppc_elf_link_hash_table *htab;
7827 bfd_boolean ret = TRUE;
7830 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
7833 htab = ppc_elf_hash_table (info);
7834 dynobj = elf_hash_table (info)->dynobj;
7835 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
7836 if (htab->is_vxworks)
7837 splt = bfd_get_section_by_name (dynobj, ".plt");
7842 if (htab->elf.hgot != NULL)
7843 got = SYM_VAL (htab->elf.hgot);
7845 if (htab->elf.dynamic_sections_created)
7847 Elf32_External_Dyn *dyncon, *dynconend;
7849 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
7851 dyncon = (Elf32_External_Dyn *) sdyn->contents;
7852 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
7853 for (; dyncon < dynconend; dyncon++)
7855 Elf_Internal_Dyn dyn;
7858 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
7863 if (htab->is_vxworks)
7867 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7871 dyn.d_un.d_val = htab->relplt->size;
7876 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
7880 dyn.d_un.d_ptr = got;
7884 if (htab->is_vxworks)
7887 dyn.d_un.d_ptr -= htab->relplt->size;
7893 if (htab->is_vxworks
7894 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
7899 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
7903 if (htab->got != NULL)
7905 if (htab->elf.hgot->root.u.def.section == htab->got
7906 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
7908 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
7910 p += htab->elf.hgot->root.u.def.value;
7911 if (htab->plt_type == PLT_OLD)
7913 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
7914 so that a function can easily find the address of
7915 _GLOBAL_OFFSET_TABLE_. */
7916 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
7917 < htab->elf.hgot->root.u.def.section->size);
7918 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
7923 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
7924 BFD_ASSERT (htab->elf.hgot->root.u.def.value
7925 < htab->elf.hgot->root.u.def.section->size);
7926 bfd_put_32 (output_bfd, val, p);
7931 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
7932 htab->elf.hgot->root.root.string,
7933 (htab->sgotplt != NULL
7934 ? htab->sgotplt->name : htab->got->name));
7935 bfd_set_error (bfd_error_bad_value);
7939 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
7942 /* Fill in the first entry in the VxWorks procedure linkage table. */
7943 if (splt && splt->size > 0)
7945 /* Use the right PLT. */
7946 static const bfd_vma *plt_entry = NULL;
7947 plt_entry = info->shared ?
7948 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
7952 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
7954 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
7955 splt->contents + 0);
7956 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
7957 splt->contents + 4);
7961 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
7962 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
7964 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
7965 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
7966 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
7967 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
7968 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
7969 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
7973 Elf_Internal_Rela rela;
7976 loc = htab->srelplt2->contents;
7978 /* Output the @ha relocation for the first instruction. */
7979 rela.r_offset = (htab->plt->output_section->vma
7980 + htab->plt->output_offset
7982 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
7984 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7985 loc += sizeof (Elf32_External_Rela);
7987 /* Output the @l relocation for the second instruction. */
7988 rela.r_offset = (htab->plt->output_section->vma
7989 + htab->plt->output_offset
7991 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
7993 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7994 loc += sizeof (Elf32_External_Rela);
7996 /* Fix up the remaining relocations. They may have the wrong
7997 symbol index for _G_O_T_ or _P_L_T_ depending on the order
7998 in which symbols were output. */
7999 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8001 Elf_Internal_Rela rel;
8003 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8004 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8005 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8006 loc += sizeof (Elf32_External_Rela);
8008 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8009 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8010 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8011 loc += sizeof (Elf32_External_Rela);
8013 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8014 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8015 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8016 loc += sizeof (Elf32_External_Rela);
8021 if (htab->glink != NULL && htab->glink->contents != NULL)
8024 unsigned char *endp;
8029 * PIC glink code is the following:
8031 * # ith PLT code stub.
8032 * addis 11,30,(plt+(i-1)*4-got)@ha
8033 * lwz 11,(plt+(i-1)*4-got)@l(11)
8037 * # A table of branches, one for each plt entry.
8038 * # The idea is that the plt call stub loads ctr and r11 with these
8039 * # addresses, so (r11 - res_0) gives the plt index * 4.
8040 * res_0: b PLTresolve
8041 * res_1: b PLTresolve
8043 * # Some number of entries towards the end can be nops
8049 * addis 11,11,(1f-res_0)@ha
8052 * 1: addi 11,11,(1b-res_0)@l
8055 * sub 11,11,12 # r11 = index * 4
8056 * addis 12,12,(got+4-1b)@ha
8057 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8058 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8061 * add 11,0,11 # r11 = index * 12 = reloc offset.
8064 static const unsigned int pic_plt_resolve[] =
8085 * Non-PIC glink code is a little simpler.
8087 * # ith PLT code stub.
8088 * lis 11,(plt+(i-1)*4)@ha
8089 * lwz 11,(plt+(i-1)*4)@l(11)
8093 * The branch table is the same, then comes
8097 * addis 11,11,(-res_0)@ha
8098 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8099 * addi 11,11,(-res_0)@l # r11 = index * 4
8102 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8103 * add 11,0,11 # r11 = index * 12 = reloc offset.
8106 static const unsigned int plt_resolve[] =
8126 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8128 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8131 /* Build the branch table, one for each plt entry (less one),
8132 and perhaps some padding. */
8133 p = htab->glink->contents;
8134 p += htab->glink_pltresolve;
8135 endp = htab->glink->contents;
8136 endp += htab->glink->size - GLINK_PLTRESOLVE;
8137 while (p < endp - 8 * 4)
8139 bfd_put_32 (output_bfd, B + endp - p, p);
8144 bfd_put_32 (output_bfd, NOP, p);
8148 res0 = (htab->glink_pltresolve
8149 + htab->glink->output_section->vma
8150 + htab->glink->output_offset);
8152 /* Last comes the PLTresolve stub. */
8153 if (info->shared || info->pie)
8157 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8159 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8162 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8164 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8165 + htab->glink->output_section->vma
8166 + htab->glink->output_offset);
8168 bfd_put_32 (output_bfd,
8169 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8170 bfd_put_32 (output_bfd,
8171 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8172 bfd_put_32 (output_bfd,
8173 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8174 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8176 bfd_put_32 (output_bfd,
8177 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8178 bfd_put_32 (output_bfd,
8179 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8183 bfd_put_32 (output_bfd,
8184 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8185 bfd_put_32 (output_bfd,
8186 LWZ_12_12 + 4, p + 9*4);
8191 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8193 bfd_put_32 (output_bfd, plt_resolve[i], p);
8196 p -= 4 * ARRAY_SIZE (plt_resolve);
8198 bfd_put_32 (output_bfd,
8199 LIS_12 + PPC_HA (got + 4), p + 0*4);
8200 bfd_put_32 (output_bfd,
8201 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8202 bfd_put_32 (output_bfd,
8203 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8204 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8206 bfd_put_32 (output_bfd,
8207 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8208 bfd_put_32 (output_bfd,
8209 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8213 bfd_put_32 (output_bfd,
8214 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8215 bfd_put_32 (output_bfd,
8216 LWZ_12_12 + 4, p + 6*4);
8224 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8225 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8226 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8227 #define TARGET_BIG_NAME "elf32-powerpc"
8228 #define ELF_ARCH bfd_arch_powerpc
8229 #define ELF_MACHINE_CODE EM_PPC
8230 #ifdef __QNXTARGET__
8231 #define ELF_MAXPAGESIZE 0x1000
8233 #define ELF_MAXPAGESIZE 0x10000
8235 #define ELF_MINPAGESIZE 0x1000
8236 #define ELF_COMMONPAGESIZE 0x1000
8237 #define elf_info_to_howto ppc_elf_info_to_howto
8239 #ifdef EM_CYGNUS_POWERPC
8240 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8244 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8247 #define elf_backend_plt_not_loaded 1
8248 #define elf_backend_can_gc_sections 1
8249 #define elf_backend_can_refcount 1
8250 #define elf_backend_rela_normal 1
8252 #define bfd_elf32_mkobject ppc_elf_mkobject
8253 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8254 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8255 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8256 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8257 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8258 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8259 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8261 #define elf_backend_object_p ppc_elf_object_p
8262 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8263 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8264 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8265 #define elf_backend_relocate_section ppc_elf_relocate_section
8266 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8267 #define elf_backend_check_relocs ppc_elf_check_relocs
8268 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8269 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8270 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8271 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8272 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8273 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8274 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8275 #define elf_backend_fake_sections ppc_elf_fake_sections
8276 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8277 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8278 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8279 #define elf_backend_write_core_note ppc_elf_write_core_note
8280 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8281 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8282 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8283 #define elf_backend_write_section ppc_elf_write_section
8284 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8285 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8286 #define elf_backend_action_discarded ppc_elf_action_discarded
8287 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8289 #include "elf32-target.h"
8291 /* VxWorks Target */
8293 #undef TARGET_LITTLE_SYM
8294 #undef TARGET_LITTLE_NAME
8296 #undef TARGET_BIG_SYM
8297 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8298 #undef TARGET_BIG_NAME
8299 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8301 /* VxWorks uses the elf default section flags for .plt. */
8302 static const struct bfd_elf_special_section *
8303 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
8305 if (sec->name == NULL)
8308 if (strcmp (sec->name, ".plt") == 0)
8309 return _bfd_elf_get_sec_type_attr (abfd, sec);
8311 return ppc_elf_get_sec_type_attr (abfd, sec);
8314 /* Like ppc_elf_link_hash_table_create, but overrides
8315 appropriately for VxWorks. */
8316 static struct bfd_link_hash_table *
8317 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8319 struct bfd_link_hash_table *ret;
8321 ret = ppc_elf_link_hash_table_create (abfd);
8324 struct ppc_elf_link_hash_table *htab
8325 = (struct ppc_elf_link_hash_table *)ret;
8326 htab->is_vxworks = 1;
8327 htab->plt_type = PLT_VXWORKS;
8328 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8329 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8330 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8335 /* Tweak magic VxWorks symbols as they are loaded. */
8337 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8338 struct bfd_link_info *info,
8339 Elf_Internal_Sym *sym,
8340 const char **namep ATTRIBUTE_UNUSED,
8341 flagword *flagsp ATTRIBUTE_UNUSED,
8345 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8349 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8353 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8355 ppc_elf_final_write_processing(abfd, linker);
8356 elf_vxworks_final_write_processing(abfd, linker);
8359 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8361 #undef elf_backend_want_plt_sym
8362 #define elf_backend_want_plt_sym 1
8363 #undef elf_backend_want_got_plt
8364 #define elf_backend_want_got_plt 1
8365 #undef elf_backend_got_symbol_offset
8366 #define elf_backend_got_symbol_offset 0
8367 #undef elf_backend_plt_not_loaded
8368 #define elf_backend_plt_not_loaded 0
8369 #undef elf_backend_plt_readonly
8370 #define elf_backend_plt_readonly 1
8371 #undef elf_backend_got_header_size
8372 #define elf_backend_got_header_size 12
8374 #undef bfd_elf32_get_synthetic_symtab
8376 #undef bfd_elf32_bfd_link_hash_table_create
8377 #define bfd_elf32_bfd_link_hash_table_create \
8378 ppc_elf_vxworks_link_hash_table_create
8379 #undef elf_backend_add_symbol_hook
8380 #define elf_backend_add_symbol_hook \
8381 ppc_elf_vxworks_add_symbol_hook
8382 #undef elf_backend_link_output_symbol_hook
8383 #define elf_backend_link_output_symbol_hook \
8384 elf_vxworks_link_output_symbol_hook
8385 #undef elf_backend_final_write_processing
8386 #define elf_backend_final_write_processing \
8387 ppc_elf_vxworks_final_write_processing
8388 #undef elf_backend_get_sec_type_attr
8389 #define elf_backend_get_sec_type_attr \
8390 ppc_elf_vxworks_get_sec_type_attr
8391 #undef elf_backend_emit_relocs
8392 #define elf_backend_emit_relocs \
8393 elf_vxworks_emit_relocs
8396 #define elf32_bed ppc_elf_vxworks_bed
8398 #include "elf32-target.h"
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