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_signed, /* 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_signed, /* complain_on_overflow */
1321 bfd_elf_generic_reloc, /* special_function */
1322 "R_PPC_EMB_SDA2I16", /* name */
1323 FALSE, /* partial_inplace */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1328 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1329 small data items. */
1330 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 FALSE, /* pc_relative */
1336 complain_overflow_signed, /* complain_on_overflow */
1337 bfd_elf_generic_reloc, /* special_function */
1338 "R_PPC_EMB_SDA2REL", /* name */
1339 FALSE, /* partial_inplace */
1341 0xffff, /* dst_mask */
1342 FALSE), /* pcrel_offset */
1344 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1345 signed offset from the appropriate base, and filling in the register
1346 field with the appropriate register (0, 2, or 13). */
1347 HOWTO (R_PPC_EMB_SDA21, /* type */
1349 2, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE, /* pc_relative */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 bfd_elf_generic_reloc, /* special_function */
1355 "R_PPC_EMB_SDA21", /* name */
1356 FALSE, /* partial_inplace */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1361 /* Relocation not handled: R_PPC_EMB_MRKREF */
1362 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1363 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1364 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1365 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1366 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1368 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1369 in the 16 bit signed offset from the appropriate base, and filling in the
1370 register field with the appropriate register (0, 2, or 13). */
1371 HOWTO (R_PPC_EMB_RELSDA, /* type */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 TRUE, /* pc_relative */
1377 complain_overflow_signed, /* complain_on_overflow */
1378 bfd_elf_generic_reloc, /* special_function */
1379 "R_PPC_EMB_RELSDA", /* name */
1380 FALSE, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1385 HOWTO (R_PPC_IRELATIVE, /* type */
1387 2, /* size (0 = byte, 1 = short, 2 = long) */
1389 FALSE, /* pc_relative */
1391 complain_overflow_bitfield, /* complain_on_overflow */
1392 bfd_elf_generic_reloc, /* special_function */
1393 "R_PPC_IRELATIVE", /* name */
1394 FALSE, /* partial_inplace */
1396 0xffffffff, /* dst_mask */
1397 FALSE), /* pcrel_offset */
1399 /* A 16 bit relative relocation. */
1400 HOWTO (R_PPC_REL16, /* type */
1402 1, /* size (0 = byte, 1 = short, 2 = long) */
1404 TRUE, /* pc_relative */
1406 complain_overflow_bitfield, /* complain_on_overflow */
1407 bfd_elf_generic_reloc, /* special_function */
1408 "R_PPC_REL16", /* name */
1409 FALSE, /* partial_inplace */
1411 0xffff, /* dst_mask */
1412 TRUE), /* pcrel_offset */
1414 /* A 16 bit relative relocation without overflow. */
1415 HOWTO (R_PPC_REL16_LO, /* type */
1417 1, /* size (0 = byte, 1 = short, 2 = long) */
1419 TRUE, /* pc_relative */
1421 complain_overflow_dont,/* complain_on_overflow */
1422 bfd_elf_generic_reloc, /* special_function */
1423 "R_PPC_REL16_LO", /* name */
1424 FALSE, /* partial_inplace */
1426 0xffff, /* dst_mask */
1427 TRUE), /* pcrel_offset */
1429 /* The high order 16 bits of a relative address. */
1430 HOWTO (R_PPC_REL16_HI, /* type */
1431 16, /* rightshift */
1432 1, /* size (0 = byte, 1 = short, 2 = long) */
1434 TRUE, /* pc_relative */
1436 complain_overflow_dont, /* complain_on_overflow */
1437 bfd_elf_generic_reloc, /* special_function */
1438 "R_PPC_REL16_HI", /* name */
1439 FALSE, /* partial_inplace */
1441 0xffff, /* dst_mask */
1442 TRUE), /* pcrel_offset */
1444 /* The high order 16 bits of a relative address, plus 1 if the contents of
1445 the low 16 bits, treated as a signed number, is negative. */
1446 HOWTO (R_PPC_REL16_HA, /* type */
1447 16, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 TRUE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc_elf_addr16_ha_reloc, /* special_function */
1454 "R_PPC_REL16_HA", /* name */
1455 FALSE, /* partial_inplace */
1457 0xffff, /* dst_mask */
1458 TRUE), /* pcrel_offset */
1460 /* GNU extension to record C++ vtable hierarchy. */
1461 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1463 0, /* size (0 = byte, 1 = short, 2 = long) */
1465 FALSE, /* pc_relative */
1467 complain_overflow_dont, /* complain_on_overflow */
1468 NULL, /* special_function */
1469 "R_PPC_GNU_VTINHERIT", /* name */
1470 FALSE, /* partial_inplace */
1473 FALSE), /* pcrel_offset */
1475 /* GNU extension to record C++ vtable member usage. */
1476 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1478 0, /* size (0 = byte, 1 = short, 2 = long) */
1480 FALSE, /* pc_relative */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 NULL, /* special_function */
1484 "R_PPC_GNU_VTENTRY", /* name */
1485 FALSE, /* partial_inplace */
1488 FALSE), /* pcrel_offset */
1490 /* Phony reloc to handle AIX style TOC entries. */
1491 HOWTO (R_PPC_TOC16, /* type */
1493 1, /* size (0 = byte, 1 = short, 2 = long) */
1495 FALSE, /* pc_relative */
1497 complain_overflow_signed, /* complain_on_overflow */
1498 bfd_elf_generic_reloc, /* special_function */
1499 "R_PPC_TOC16", /* name */
1500 FALSE, /* partial_inplace */
1502 0xffff, /* dst_mask */
1503 FALSE), /* pcrel_offset */
1506 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1509 ppc_elf_howto_init (void)
1511 unsigned int i, type;
1514 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1517 type = ppc_elf_howto_raw[i].type;
1518 if (type >= (sizeof (ppc_elf_howto_table)
1519 / sizeof (ppc_elf_howto_table[0])))
1521 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1525 static reloc_howto_type *
1526 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1527 bfd_reloc_code_real_type code)
1529 enum elf_ppc_reloc_type r;
1531 /* Initialize howto table if not already done. */
1532 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1533 ppc_elf_howto_init ();
1540 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1541 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1542 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1543 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1544 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1545 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1546 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1547 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1548 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1549 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1550 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1551 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1552 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1553 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1554 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1555 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1556 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1557 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1558 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1559 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1560 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1561 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1562 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1563 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1564 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1565 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1566 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1567 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1568 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1569 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1570 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1571 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1572 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1573 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1574 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1575 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1576 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1577 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1578 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1579 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1580 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1581 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1582 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1583 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1584 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1585 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1586 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1587 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1588 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1589 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1590 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1591 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1592 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1593 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1594 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1595 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1596 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1597 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1598 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1599 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1600 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1601 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1602 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1603 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1604 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1605 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1606 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1607 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1608 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1609 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1610 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1611 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1612 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1613 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1614 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1615 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1616 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1617 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1618 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1619 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1620 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1621 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1622 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1623 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1624 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1625 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1626 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1629 return ppc_elf_howto_table[r];
1632 static reloc_howto_type *
1633 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1639 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1641 if (ppc_elf_howto_raw[i].name != NULL
1642 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
1643 return &ppc_elf_howto_raw[i];
1648 /* Set the howto pointer for a PowerPC ELF reloc. */
1651 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1653 Elf_Internal_Rela *dst)
1655 /* Initialize howto table if not already done. */
1656 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1657 ppc_elf_howto_init ();
1659 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1660 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1662 /* Just because the above assert didn't trigger doesn't mean that
1663 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
1664 if (!cache_ptr->howto)
1666 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
1667 abfd, ELF32_R_TYPE (dst->r_info));
1668 bfd_set_error (bfd_error_bad_value);
1670 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
1674 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1676 static bfd_reloc_status_type
1677 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1678 arelent *reloc_entry,
1680 void *data ATTRIBUTE_UNUSED,
1681 asection *input_section,
1683 char **error_message ATTRIBUTE_UNUSED)
1687 if (output_bfd != NULL)
1689 reloc_entry->address += input_section->output_offset;
1690 return bfd_reloc_ok;
1693 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1694 return bfd_reloc_outofrange;
1696 if (bfd_is_com_section (symbol->section))
1699 relocation = symbol->value;
1701 relocation += symbol->section->output_section->vma;
1702 relocation += symbol->section->output_offset;
1703 relocation += reloc_entry->addend;
1704 if (reloc_entry->howto->pc_relative)
1705 relocation -= reloc_entry->address;
1707 reloc_entry->addend += (relocation & 0x8000) << 1;
1709 return bfd_reloc_continue;
1712 static bfd_reloc_status_type
1713 ppc_elf_unhandled_reloc (bfd *abfd,
1714 arelent *reloc_entry,
1717 asection *input_section,
1719 char **error_message)
1721 /* If this is a relocatable link (output_bfd test tells us), just
1722 call the generic function. Any adjustment will be done at final
1724 if (output_bfd != NULL)
1725 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1726 input_section, output_bfd, error_message);
1728 if (error_message != NULL)
1730 static char buf[60];
1731 sprintf (buf, _("generic linker can't handle %s"),
1732 reloc_entry->howto->name);
1733 *error_message = buf;
1735 return bfd_reloc_dangerous;
1738 /* Sections created by the linker. */
1740 typedef struct elf_linker_section
1742 /* Pointer to the bfd section. */
1746 /* Associated bss section name. */
1747 const char *bss_name;
1748 /* Associated symbol name. */
1749 const char *sym_name;
1750 /* Associated symbol. */
1751 struct elf_link_hash_entry *sym;
1752 } elf_linker_section_t;
1754 /* Linked list of allocated pointer entries. This hangs off of the
1755 symbol lists, and provides allows us to return different pointers,
1756 based on different addend's. */
1758 typedef struct elf_linker_section_pointers
1760 /* next allocated pointer for this symbol */
1761 struct elf_linker_section_pointers *next;
1762 /* offset of pointer from beginning of section */
1766 /* which linker section this is */
1767 elf_linker_section_t *lsect;
1768 } elf_linker_section_pointers_t;
1770 struct ppc_elf_obj_tdata
1772 struct elf_obj_tdata elf;
1774 /* A mapping from local symbols to offsets into the various linker
1775 sections added. This is index by the symbol index. */
1776 elf_linker_section_pointers_t **linker_section_pointers;
1778 /* Flags used to auto-detect plt type. */
1779 unsigned int makes_plt_call : 1;
1780 unsigned int has_rel16 : 1;
1783 #define ppc_elf_tdata(bfd) \
1784 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1786 #define elf_local_ptr_offsets(bfd) \
1787 (ppc_elf_tdata (bfd)->linker_section_pointers)
1789 #define is_ppc_elf(bfd) \
1790 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
1791 && elf_object_id (bfd) == PPC32_ELF_TDATA)
1793 /* Override the generic function because we store some extras. */
1796 ppc_elf_mkobject (bfd *abfd)
1798 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
1802 /* Fix bad default arch selected for a 32 bit input bfd when the
1803 default is 64 bit. */
1806 ppc_elf_object_p (bfd *abfd)
1808 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1810 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1812 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1814 /* Relies on arch after 64 bit default being 32 bit default. */
1815 abfd->arch_info = abfd->arch_info->next;
1816 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1822 /* Function to set whether a module needs the -mrelocatable bit set. */
1825 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1827 BFD_ASSERT (!elf_flags_init (abfd)
1828 || elf_elfheader (abfd)->e_flags == flags);
1830 elf_elfheader (abfd)->e_flags = flags;
1831 elf_flags_init (abfd) = TRUE;
1835 /* Support for core dump NOTE sections. */
1838 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1843 switch (note->descsz)
1848 case 268: /* Linux/PPC. */
1850 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1853 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1862 /* Make a ".reg/999" section. */
1863 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1864 size, note->descpos + offset);
1868 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1870 switch (note->descsz)
1875 case 128: /* Linux/PPC elf_prpsinfo. */
1876 elf_tdata (abfd)->core_program
1877 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1878 elf_tdata (abfd)->core_command
1879 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1882 /* Note that for some reason, a spurious space is tacked
1883 onto the end of the args in some (at least one anyway)
1884 implementations, so strip it off if it exists. */
1887 char *command = elf_tdata (abfd)->core_command;
1888 int n = strlen (command);
1890 if (0 < n && command[n - 1] == ' ')
1891 command[n - 1] = '\0';
1898 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
1910 va_start (ap, note_type);
1911 memset (data, 0, 32);
1912 strncpy (data + 32, va_arg (ap, const char *), 16);
1913 strncpy (data + 48, va_arg (ap, const char *), 80);
1915 return elfcore_write_note (abfd, buf, bufsiz,
1916 "CORE", note_type, data, sizeof (data));
1927 va_start (ap, note_type);
1928 memset (data, 0, 72);
1929 pid = va_arg (ap, long);
1930 bfd_put_32 (abfd, pid, data + 24);
1931 cursig = va_arg (ap, int);
1932 bfd_put_16 (abfd, cursig, data + 12);
1933 greg = va_arg (ap, const void *);
1934 memcpy (data + 72, greg, 192);
1935 memset (data + 264, 0, 4);
1937 return elfcore_write_note (abfd, buf, bufsiz,
1938 "CORE", note_type, data, sizeof (data));
1943 /* Return address for Ith PLT stub in section PLT, for relocation REL
1944 or (bfd_vma) -1 if it should not be included. */
1947 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1948 const asection *plt ATTRIBUTE_UNUSED,
1951 return rel->address;
1954 /* Handle a PowerPC specific section when reading an object file. This
1955 is called when bfd_section_from_shdr finds a section with an unknown
1959 ppc_elf_section_from_shdr (bfd *abfd,
1960 Elf_Internal_Shdr *hdr,
1967 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1970 newsect = hdr->bfd_section;
1971 flags = bfd_get_section_flags (abfd, newsect);
1972 if (hdr->sh_flags & SHF_EXCLUDE)
1973 flags |= SEC_EXCLUDE;
1975 if (hdr->sh_type == SHT_ORDERED)
1976 flags |= SEC_SORT_ENTRIES;
1978 bfd_set_section_flags (abfd, newsect, flags);
1982 /* Set up any other section flags and such that may be necessary. */
1985 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1986 Elf_Internal_Shdr *shdr,
1989 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
1990 shdr->sh_flags |= SHF_EXCLUDE;
1992 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1993 shdr->sh_type = SHT_ORDERED;
1998 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1999 need to bump up the number of section headers. */
2002 ppc_elf_additional_program_headers (bfd *abfd,
2003 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2008 s = bfd_get_section_by_name (abfd, ".sbss2");
2009 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2012 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2013 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2019 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2020 .PPC.EMB.sbss0 a normal section, and not a bss section so
2021 that the linker doesn't crater when trying to make more than
2024 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2026 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2027 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2028 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2029 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2030 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2031 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2032 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2033 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2034 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2035 { NULL, 0, 0, 0, 0 }
2038 /* This is what we want for new plt/got. */
2039 static struct bfd_elf_special_section ppc_alt_plt =
2040 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2042 static const struct bfd_elf_special_section *
2043 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2045 const struct bfd_elf_special_section *ssect;
2047 /* See if this is one of the special sections. */
2048 if (sec->name == NULL)
2051 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2055 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2056 ssect = &ppc_alt_plt;
2060 return _bfd_elf_get_sec_type_attr (abfd, sec);
2063 /* Very simple linked list structure for recording apuinfo values. */
2064 typedef struct apuinfo_list
2066 struct apuinfo_list *next;
2067 unsigned long value;
2071 static apuinfo_list *head;
2075 apuinfo_list_init (void)
2081 apuinfo_list_add (unsigned long value)
2083 apuinfo_list *entry = head;
2085 while (entry != NULL)
2087 if (entry->value == value)
2089 entry = entry->next;
2092 entry = bfd_malloc (sizeof (* entry));
2096 entry->value = value;
2102 apuinfo_list_length (void)
2104 apuinfo_list *entry;
2105 unsigned long count;
2107 for (entry = head, count = 0;
2109 entry = entry->next)
2115 static inline unsigned long
2116 apuinfo_list_element (unsigned long number)
2118 apuinfo_list * entry;
2122 entry = entry->next)
2125 return entry ? entry->value : 0;
2129 apuinfo_list_finish (void)
2131 apuinfo_list *entry;
2133 for (entry = head; entry;)
2135 apuinfo_list *next = entry->next;
2143 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2144 #define APUINFO_LABEL "APUinfo"
2146 /* Scan the input BFDs and create a linked list of
2147 the APUinfo values that will need to be emitted. */
2150 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2155 unsigned num_input_sections;
2156 bfd_size_type output_section_size;
2158 unsigned num_entries;
2159 unsigned long offset;
2160 unsigned long length;
2161 const char *error_message = NULL;
2163 if (link_info == NULL)
2166 /* Scan the input bfds, looking for apuinfo sections. */
2167 num_input_sections = 0;
2168 output_section_size = 0;
2170 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2172 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2175 ++ num_input_sections;
2176 output_section_size += asec->size;
2180 /* We need at least one input sections
2181 in order to make merging worthwhile. */
2182 if (num_input_sections < 1)
2185 /* Just make sure that the output section exists as well. */
2186 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2190 /* Allocate a buffer for the contents of the input sections. */
2191 buffer = bfd_malloc (output_section_size);
2196 apuinfo_list_init ();
2198 /* Read in the input sections contents. */
2199 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2201 unsigned long datum;
2204 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2208 length = asec->size;
2211 error_message = _("corrupt or empty %s section in %B");
2215 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2216 || (bfd_bread (buffer + offset, length, ibfd) != length))
2218 error_message = _("unable to read in %s section from %B");
2222 /* Process the contents of the section. */
2223 ptr = buffer + offset;
2224 error_message = _("corrupt %s section in %B");
2226 /* Verify the contents of the header. Note - we have to
2227 extract the values this way in order to allow for a
2228 host whose endian-ness is different from the target. */
2229 datum = bfd_get_32 (ibfd, ptr);
2230 if (datum != sizeof APUINFO_LABEL)
2233 datum = bfd_get_32 (ibfd, ptr + 8);
2237 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2240 /* Get the number of bytes used for apuinfo entries. */
2241 datum = bfd_get_32 (ibfd, ptr + 4);
2242 if (datum + 20 != length)
2245 /* Make sure that we do not run off the end of the section. */
2246 if (offset + length > output_section_size)
2249 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2250 for (i = 0; i < datum; i += 4)
2251 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2253 /* Update the offset. */
2257 error_message = NULL;
2259 /* Compute the size of the output section. */
2260 num_entries = apuinfo_list_length ();
2261 output_section_size = 20 + num_entries * 4;
2263 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2265 if (! bfd_set_section_size (abfd, asec, output_section_size))
2267 error_message = _("warning: unable to set size of %s section in %B");
2273 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2276 /* Prevent the output section from accumulating the input sections'
2277 contents. We have already stored this in our linked list structure. */
2280 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2281 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2283 bfd_byte *contents ATTRIBUTE_UNUSED)
2285 return (apuinfo_list_length ()
2286 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2289 /* Finally we can generate the output section. */
2292 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2297 unsigned num_entries;
2298 bfd_size_type length;
2300 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2304 if (apuinfo_list_length () == 0)
2307 length = asec->size;
2311 buffer = bfd_malloc (length);
2314 (*_bfd_error_handler)
2315 (_("failed to allocate space for new APUinfo section."));
2319 /* Create the apuinfo header. */
2320 num_entries = apuinfo_list_length ();
2321 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2322 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2323 bfd_put_32 (abfd, 0x2, buffer + 8);
2324 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2327 for (i = 0; i < num_entries; i++)
2329 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2333 if (length != asec->size)
2334 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2336 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2337 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2341 apuinfo_list_finish ();
2345 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2347 bfd_byte buf[GLINK_ENTRY_SIZE];
2349 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2352 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2353 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2354 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2355 && bfd_get_32 (abfd, buf + 12) == BCTR);
2359 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2361 bfd_vma vma = *(bfd_vma *) ptr;
2362 return ((section->flags & SEC_ALLOC) != 0
2363 && section->vma <= vma
2364 && vma < section->vma + section->size);
2368 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2369 long dynsymcount, asymbol **dynsyms,
2372 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2373 asection *plt, *relplt, *dynamic, *glink;
2374 bfd_vma glink_vma = 0;
2375 bfd_vma resolv_vma = 0;
2386 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2389 if (dynsymcount <= 0)
2392 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2396 plt = bfd_get_section_by_name (abfd, ".plt");
2400 /* Call common code to handle old-style executable PLTs. */
2401 if (elf_section_flags (plt) & SHF_EXECINSTR)
2402 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2403 dynsymcount, dynsyms, ret);
2405 /* If this object was prelinked, the prelinker stored the address
2406 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2407 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2408 if (dynamic != NULL)
2410 bfd_byte *dynbuf, *extdyn, *extdynend;
2412 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2414 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2417 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2418 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2421 extdynend = extdyn + dynamic->size;
2422 for (; extdyn < extdynend; extdyn += extdynsize)
2424 Elf_Internal_Dyn dyn;
2425 (*swap_dyn_in) (abfd, extdyn, &dyn);
2427 if (dyn.d_tag == DT_NULL)
2430 if (dyn.d_tag == DT_PPC_GOT)
2432 unsigned int g_o_t = dyn.d_un.d_val;
2433 asection *got = bfd_get_section_by_name (abfd, ".got");
2435 && bfd_get_section_contents (abfd, got, buf,
2436 g_o_t - got->vma + 4, 4))
2437 glink_vma = bfd_get_32 (abfd, buf);
2444 /* Otherwise we read the first plt entry. */
2447 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2448 glink_vma = bfd_get_32 (abfd, buf);
2454 /* The .glink section usually does not survive the final
2455 link; search for the section (usually .text) where the
2456 glink stubs now reside. */
2457 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2461 /* Determine glink PLT resolver by reading the relative branch
2462 from the first glink stub. */
2463 if (bfd_get_section_contents (abfd, glink, buf,
2464 glink_vma - glink->vma, 4))
2466 unsigned int insn = bfd_get_32 (abfd, buf);
2468 /* The first glink stub may either branch to the resolver ... */
2470 if ((insn & ~0x3fffffc) == 0)
2471 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2473 /* ... or fall through a bunch of NOPs. */
2474 else if ((insn ^ B ^ NOP) == 0)
2476 bfd_get_section_contents (abfd, glink, buf,
2477 glink_vma - glink->vma + i, 4);
2479 if (bfd_get_32 (abfd, buf) != NOP)
2481 resolv_vma = glink_vma + i;
2486 count = relplt->size / sizeof (Elf32_External_Rela);
2487 stub_vma = glink_vma - (bfd_vma) count * 16;
2488 /* If the stubs are those for -shared/-pie then we might have
2489 multiple stubs for each plt entry. If that is the case then
2490 there is no way to associate stubs with their plt entries short
2491 of figuring out the GOT pointer value used in the stub. */
2492 if (!is_nonpic_glink_stub (abfd, glink,
2493 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2496 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2497 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2500 size = count * sizeof (asymbol);
2501 p = relplt->relocation;
2502 for (i = 0; i < count; i++, p++)
2504 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2506 size += sizeof ("+0x") - 1 + 8;
2509 size += sizeof (asymbol) + sizeof ("__glink");
2512 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2514 s = *ret = bfd_malloc (size);
2518 names = (char *) (s + count + 1 + (resolv_vma != 0));
2519 p = relplt->relocation;
2520 for (i = 0; i < count; i++, p++)
2524 *s = **p->sym_ptr_ptr;
2525 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2526 we are defining a symbol, ensure one of them is set. */
2527 if ((s->flags & BSF_LOCAL) == 0)
2528 s->flags |= BSF_GLOBAL;
2529 s->flags |= BSF_SYNTHETIC;
2531 s->value = stub_vma - glink->vma;
2534 len = strlen ((*p->sym_ptr_ptr)->name);
2535 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2539 memcpy (names, "+0x", sizeof ("+0x") - 1);
2540 names += sizeof ("+0x") - 1;
2541 bfd_sprintf_vma (abfd, names, p->addend);
2542 names += strlen (names);
2544 memcpy (names, "@plt", sizeof ("@plt"));
2545 names += sizeof ("@plt");
2550 /* Add a symbol at the start of the glink branch table. */
2551 memset (s, 0, sizeof *s);
2553 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2555 s->value = glink_vma - glink->vma;
2557 memcpy (names, "__glink", sizeof ("__glink"));
2558 names += sizeof ("__glink");
2564 /* Add a symbol for the glink PLT resolver. */
2565 memset (s, 0, sizeof *s);
2567 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2569 s->value = resolv_vma - glink->vma;
2571 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
2572 names += sizeof ("__glink_PLTresolve");
2580 /* The following functions are specific to the ELF linker, while
2581 functions above are used generally. They appear in this file more
2582 or less in the order in which they are called. eg.
2583 ppc_elf_check_relocs is called early in the link process,
2584 ppc_elf_finish_dynamic_sections is one of the last functions
2587 /* The PPC linker needs to keep track of the number of relocs that it
2588 decides to copy as dynamic relocs in check_relocs for each symbol.
2589 This is so that it can later discard them if they are found to be
2590 unnecessary. We store the information in a field extending the
2591 regular ELF linker hash table. */
2593 struct ppc_elf_dyn_relocs
2595 struct ppc_elf_dyn_relocs *next;
2597 /* The input section of the reloc. */
2600 /* Total number of relocs copied for the input section. */
2601 bfd_size_type count;
2603 /* Number of pc-relative relocs copied for the input section. */
2604 bfd_size_type pc_count;
2607 /* Track PLT entries needed for a given symbol. We might need more
2608 than one glink entry per symbol when generating a pic binary. */
2611 struct plt_entry *next;
2613 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2614 This field stores the offset into .got2 used to initialise the
2615 GOT pointer reg. It will always be at least 32768. (Current
2616 gcc always uses an offset of 32768, but ld -r will pack .got2
2617 sections together resulting in larger offsets). */
2620 /* The .got2 section. */
2623 /* PLT refcount or offset. */
2626 bfd_signed_vma refcount;
2630 /* .glink stub offset. */
2631 bfd_vma glink_offset;
2634 /* Of those relocs that might be copied as dynamic relocs, this function
2635 selects those that must be copied when linking a shared library,
2636 even when the symbol is local. */
2639 must_be_dyn_reloc (struct bfd_link_info *info,
2640 enum elf_ppc_reloc_type r_type)
2649 case R_PPC_REL14_BRTAKEN:
2650 case R_PPC_REL14_BRNTAKEN:
2656 case R_PPC_TPREL16_LO:
2657 case R_PPC_TPREL16_HI:
2658 case R_PPC_TPREL16_HA:
2659 return !info->executable;
2663 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2664 copying dynamic variables from a shared lib into an app's dynbss
2665 section, and instead use a dynamic relocation to point into the
2667 #define ELIMINATE_COPY_RELOCS 1
2669 /* PPC ELF linker hash entry. */
2671 struct ppc_elf_link_hash_entry
2673 struct elf_link_hash_entry elf;
2675 /* If this symbol is used in the linker created sections, the processor
2676 specific backend uses this field to map the field into the offset
2677 from the beginning of the section. */
2678 elf_linker_section_pointers_t *linker_section_pointer;
2680 /* Track dynamic relocs copied for this symbol. */
2681 struct ppc_elf_dyn_relocs *dyn_relocs;
2683 /* Contexts in which symbol is used in the GOT (or TOC).
2684 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2685 corresponding relocs are encountered during check_relocs.
2686 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2687 indicate the corresponding GOT entry type is not needed. */
2688 #define TLS_GD 1 /* GD reloc. */
2689 #define TLS_LD 2 /* LD reloc. */
2690 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2691 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2692 #define TLS_TLS 16 /* Any TLS reloc. */
2693 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2694 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
2697 /* Nonzero if we have seen a small data relocation referring to this
2699 unsigned char has_sda_refs;
2702 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2704 /* PPC ELF linker hash table. */
2706 struct ppc_elf_link_hash_table
2708 struct elf_link_hash_table elf;
2710 /* Short-cuts to get to dynamic linker sections. */
2722 elf_linker_section_t sdata[2];
2725 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
2728 /* The .got.plt section (VxWorks only)*/
2731 /* Shortcut to __tls_get_addr. */
2732 struct elf_link_hash_entry *tls_get_addr;
2734 /* The bfd that forced an old-style PLT. */
2737 /* TLS local dynamic got entry handling. */
2739 bfd_signed_vma refcount;
2743 /* Offset of branch table to PltResolve function in glink. */
2744 bfd_vma glink_pltresolve;
2746 /* Size of reserved GOT entries. */
2747 unsigned int got_header_size;
2748 /* Non-zero if allocating the header left a gap. */
2749 unsigned int got_gap;
2751 /* The type of PLT we have chosen to use. */
2752 enum ppc_elf_plt_type plt_type;
2754 /* Set if we should emit symbols for stubs. */
2755 unsigned int emit_stub_syms:1;
2757 /* True if the target system is VxWorks. */
2758 unsigned int is_vxworks:1;
2760 /* The size of PLT entries. */
2762 /* The distance between adjacent PLT slots. */
2764 /* The size of the first PLT entry. */
2765 int plt_initial_entry_size;
2767 /* Small local sym cache. */
2768 struct sym_cache sym_cache;
2771 /* Get the PPC ELF linker hash table from a link_info structure. */
2773 #define ppc_elf_hash_table(p) \
2774 ((struct ppc_elf_link_hash_table *) (p)->hash)
2776 /* Create an entry in a PPC ELF linker hash table. */
2778 static struct bfd_hash_entry *
2779 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2780 struct bfd_hash_table *table,
2783 /* Allocate the structure if it has not already been allocated by a
2787 entry = bfd_hash_allocate (table,
2788 sizeof (struct ppc_elf_link_hash_entry));
2793 /* Call the allocation method of the superclass. */
2794 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2797 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2798 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2799 ppc_elf_hash_entry (entry)->tls_mask = 0;
2805 /* Create a PPC ELF linker hash table. */
2807 static struct bfd_link_hash_table *
2808 ppc_elf_link_hash_table_create (bfd *abfd)
2810 struct ppc_elf_link_hash_table *ret;
2812 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2816 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
2817 ppc_elf_link_hash_newfunc,
2818 sizeof (struct ppc_elf_link_hash_entry)))
2824 ret->elf.init_plt_refcount.refcount = 0;
2825 ret->elf.init_plt_refcount.glist = NULL;
2826 ret->elf.init_plt_offset.offset = 0;
2827 ret->elf.init_plt_offset.glist = NULL;
2829 ret->sdata[0].name = ".sdata";
2830 ret->sdata[0].sym_name = "_SDA_BASE_";
2831 ret->sdata[0].bss_name = ".sbss";
2833 ret->sdata[1].name = ".sdata2";
2834 ret->sdata[1].sym_name = "_SDA2_BASE_";
2835 ret->sdata[1].bss_name = ".sbss2";
2837 ret->plt_entry_size = 12;
2838 ret->plt_slot_size = 8;
2839 ret->plt_initial_entry_size = 72;
2841 return &ret->elf.root;
2844 /* Create .got and the related sections. */
2847 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2849 struct ppc_elf_link_hash_table *htab;
2853 if (!_bfd_elf_create_got_section (abfd, info))
2856 htab = ppc_elf_hash_table (info);
2857 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2861 if (htab->is_vxworks)
2863 htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
2869 /* The powerpc .got has a blrl instruction in it. Mark it
2871 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
2872 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2873 if (!bfd_set_section_flags (abfd, s, flags))
2877 htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
2885 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
2887 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2891 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
2892 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2893 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
2896 || !bfd_set_section_alignment (abfd, s, 4))
2899 flags = SEC_ALLOC | SEC_LINKER_CREATED;
2900 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
2903 || !bfd_set_section_alignment (abfd, s, 4))
2906 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2907 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2908 s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags);
2911 || ! bfd_set_section_alignment (abfd, s, 2))
2916 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2917 to output sections (just like _bfd_elf_create_dynamic_sections has
2918 to create .dynbss and .rela.bss). */
2921 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2923 struct ppc_elf_link_hash_table *htab;
2927 htab = ppc_elf_hash_table (info);
2929 if (htab->got == NULL
2930 && !ppc_elf_create_got (abfd, info))
2933 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2936 if (htab->glink == NULL
2937 && !ppc_elf_create_glink (abfd, info))
2940 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2941 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2942 SEC_ALLOC | SEC_LINKER_CREATED);
2949 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2950 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2951 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2952 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2955 || ! bfd_set_section_alignment (abfd, s, 2))
2959 if (htab->is_vxworks
2960 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2963 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2964 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2968 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2969 if (htab->plt_type == PLT_VXWORKS)
2970 /* The VxWorks PLT is a loaded section with contents. */
2971 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
2972 return bfd_set_section_flags (abfd, s, flags);
2975 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2978 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
2979 struct elf_link_hash_entry *dir,
2980 struct elf_link_hash_entry *ind)
2982 struct ppc_elf_link_hash_entry *edir, *eind;
2984 edir = (struct ppc_elf_link_hash_entry *) dir;
2985 eind = (struct ppc_elf_link_hash_entry *) ind;
2987 if (eind->dyn_relocs != NULL)
2989 if (edir->dyn_relocs != NULL)
2991 struct ppc_elf_dyn_relocs **pp;
2992 struct ppc_elf_dyn_relocs *p;
2994 /* Add reloc counts against the indirect sym to the direct sym
2995 list. Merge any entries against the same section. */
2996 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2998 struct ppc_elf_dyn_relocs *q;
3000 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3001 if (q->sec == p->sec)
3003 q->pc_count += p->pc_count;
3004 q->count += p->count;
3011 *pp = edir->dyn_relocs;
3014 edir->dyn_relocs = eind->dyn_relocs;
3015 eind->dyn_relocs = NULL;
3018 edir->tls_mask |= eind->tls_mask;
3019 edir->has_sda_refs |= eind->has_sda_refs;
3021 /* If called to transfer flags for a weakdef during processing
3022 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3023 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3024 if (!(ELIMINATE_COPY_RELOCS
3025 && eind->elf.root.type != bfd_link_hash_indirect
3026 && edir->elf.dynamic_adjusted))
3027 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3029 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3030 edir->elf.ref_regular |= eind->elf.ref_regular;
3031 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3032 edir->elf.needs_plt |= eind->elf.needs_plt;
3033 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3035 /* If we were called to copy over info for a weak sym, that's all. */
3036 if (eind->elf.root.type != bfd_link_hash_indirect)
3039 /* Copy over the GOT refcount entries that we may have already seen to
3040 the symbol which just became indirect. */
3041 edir->elf.got.refcount += eind->elf.got.refcount;
3042 eind->elf.got.refcount = 0;
3044 /* And plt entries. */
3045 if (eind->elf.plt.plist != NULL)
3047 if (edir->elf.plt.plist != NULL)
3049 struct plt_entry **entp;
3050 struct plt_entry *ent;
3052 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3054 struct plt_entry *dent;
3056 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3057 if (dent->sec == ent->sec && dent->addend == ent->addend)
3059 dent->plt.refcount += ent->plt.refcount;
3066 *entp = edir->elf.plt.plist;
3069 edir->elf.plt.plist = eind->elf.plt.plist;
3070 eind->elf.plt.plist = NULL;
3073 if (eind->elf.dynindx != -1)
3075 if (edir->elf.dynindx != -1)
3076 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3077 edir->elf.dynstr_index);
3078 edir->elf.dynindx = eind->elf.dynindx;
3079 edir->elf.dynstr_index = eind->elf.dynstr_index;
3080 eind->elf.dynindx = -1;
3081 eind->elf.dynstr_index = 0;
3085 /* Hook called by the linker routine which adds symbols from an object
3086 file. We use it to put .comm items in .sbss, and not .bss. */
3089 ppc_elf_add_symbol_hook (bfd *abfd,
3090 struct bfd_link_info *info,
3091 Elf_Internal_Sym *sym,
3092 const char **namep ATTRIBUTE_UNUSED,
3093 flagword *flagsp ATTRIBUTE_UNUSED,
3097 if (sym->st_shndx == SHN_COMMON
3098 && !info->relocatable
3099 && is_ppc_elf (info->output_bfd)
3100 && sym->st_size <= elf_gp_size (abfd))
3102 /* Common symbols less than or equal to -G nn bytes are automatically
3104 struct ppc_elf_link_hash_table *htab;
3106 htab = ppc_elf_hash_table (info);
3107 if (htab->sbss == NULL)
3109 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3111 if (!htab->elf.dynobj)
3112 htab->elf.dynobj = abfd;
3114 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3117 if (htab->sbss == NULL)
3122 *valp = sym->st_size;
3125 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
3126 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
3132 create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
3134 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3136 lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
3138 if (lsect->sym == NULL)
3140 if (lsect->sym->root.type == bfd_link_hash_new)
3141 lsect->sym->non_elf = 0;
3142 lsect->sym->ref_regular = 1;
3143 _bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
3147 /* Create a special linker section. */
3150 ppc_elf_create_linker_section (bfd *abfd,
3151 struct bfd_link_info *info,
3153 elf_linker_section_t *lsect)
3155 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3158 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3159 | SEC_LINKER_CREATED);
3161 /* Record the first bfd that needs the special sections. */
3162 if (!htab->elf.dynobj)
3163 htab->elf.dynobj = abfd;
3165 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3169 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
3173 return create_sdata_sym (info, lsect);
3176 /* Find a linker generated pointer with a given addend and type. */
3178 static elf_linker_section_pointers_t *
3179 elf_find_pointer_linker_section
3180 (elf_linker_section_pointers_t *linker_pointers,
3182 elf_linker_section_t *lsect)
3184 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3185 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3186 return linker_pointers;
3191 /* Allocate a pointer to live in a linker created section. */
3194 elf_create_pointer_linker_section (bfd *abfd,
3195 elf_linker_section_t *lsect,
3196 struct elf_link_hash_entry *h,
3197 const Elf_Internal_Rela *rel)
3199 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3200 elf_linker_section_pointers_t *linker_section_ptr;
3201 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3204 BFD_ASSERT (lsect != NULL);
3206 /* Is this a global symbol? */
3209 struct ppc_elf_link_hash_entry *eh;
3211 /* Has this symbol already been allocated? If so, our work is done. */
3212 eh = (struct ppc_elf_link_hash_entry *) h;
3213 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3218 ptr_linker_section_ptr = &eh->linker_section_pointer;
3222 BFD_ASSERT (is_ppc_elf (abfd));
3224 /* Allocation of a pointer to a local symbol. */
3225 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3227 /* Allocate a table to hold the local symbols if first time. */
3230 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3233 amt *= sizeof (elf_linker_section_pointers_t *);
3234 ptr = bfd_zalloc (abfd, amt);
3239 elf_local_ptr_offsets (abfd) = ptr;
3242 /* Has this symbol already been allocated? If so, our work is done. */
3243 if (elf_find_pointer_linker_section (ptr[r_symndx],
3248 ptr_linker_section_ptr = &ptr[r_symndx];
3251 /* Allocate space for a pointer in the linker section, and allocate
3252 a new pointer record from internal memory. */
3253 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3254 amt = sizeof (elf_linker_section_pointers_t);
3255 linker_section_ptr = bfd_alloc (abfd, amt);
3257 if (!linker_section_ptr)
3260 linker_section_ptr->next = *ptr_linker_section_ptr;
3261 linker_section_ptr->addend = rel->r_addend;
3262 linker_section_ptr->lsect = lsect;
3263 *ptr_linker_section_ptr = linker_section_ptr;
3265 linker_section_ptr->offset = lsect->section->size;
3266 lsect->section->size += 4;
3270 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3271 lsect->name, (long) linker_section_ptr->offset,
3272 (long) lsect->section->size);
3278 static struct plt_entry **
3279 update_local_sym_info (bfd *abfd,
3280 Elf_Internal_Shdr *symtab_hdr,
3281 unsigned long r_symndx,
3284 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3285 struct plt_entry **local_plt;
3286 char *local_got_tls_masks;
3288 if (local_got_refcounts == NULL)
3290 bfd_size_type size = symtab_hdr->sh_info;
3292 size *= (sizeof (*local_got_refcounts)
3293 + sizeof (*local_plt)
3294 + sizeof (*local_got_tls_masks));
3295 local_got_refcounts = bfd_zalloc (abfd, size);
3296 if (local_got_refcounts == NULL)
3298 elf_local_got_refcounts (abfd) = local_got_refcounts;
3301 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3302 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3303 local_got_tls_masks[r_symndx] |= tls_type;
3304 if (tls_type != PLT_IFUNC)
3305 local_got_refcounts[r_symndx] += 1;
3306 return local_plt + r_symndx;
3310 update_plt_info (bfd *abfd, struct plt_entry **plist,
3311 asection *sec, bfd_vma addend)
3313 struct plt_entry *ent;
3315 for (ent = *plist; ent != NULL; ent = ent->next)
3316 if (ent->sec == sec && ent->addend == addend)
3320 bfd_size_type amt = sizeof (*ent);
3321 ent = bfd_alloc (abfd, amt);
3326 ent->addend = addend;
3327 ent->plt.refcount = 0;
3330 ent->plt.refcount += 1;
3334 static struct plt_entry *
3335 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3337 struct plt_entry *ent;
3341 for (ent = *plist; ent != NULL; ent = ent->next)
3342 if (ent->sec == sec && ent->addend == addend)
3348 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3350 return (r_type == R_PPC_PLTREL24
3351 || r_type == R_PPC_LOCAL24PC
3352 || r_type == R_PPC_REL24
3353 || r_type == R_PPC_REL14
3354 || r_type == R_PPC_REL14_BRTAKEN
3355 || r_type == R_PPC_REL14_BRNTAKEN
3356 || r_type == R_PPC_ADDR24
3357 || r_type == R_PPC_ADDR14
3358 || r_type == R_PPC_ADDR14_BRTAKEN
3359 || r_type == R_PPC_ADDR14_BRNTAKEN);
3363 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3365 (*_bfd_error_handler)
3366 (_("%B: relocation %s cannot be used when making a shared object"),
3368 ppc_elf_howto_table[r_type]->name);
3369 bfd_set_error (bfd_error_bad_value);
3372 /* Look through the relocs for a section during the first phase, and
3373 allocate space in the global offset table or procedure linkage
3377 ppc_elf_check_relocs (bfd *abfd,
3378 struct bfd_link_info *info,
3380 const Elf_Internal_Rela *relocs)
3382 struct ppc_elf_link_hash_table *htab;
3383 Elf_Internal_Shdr *symtab_hdr;
3384 struct elf_link_hash_entry **sym_hashes;
3385 const Elf_Internal_Rela *rel;
3386 const Elf_Internal_Rela *rel_end;
3387 asection *got2, *sreloc;
3388 struct elf_link_hash_entry *tga;
3390 if (info->relocatable)
3393 /* Don't do anything special with non-loaded, non-alloced sections.
3394 In particular, any relocs in such sections should not affect GOT
3395 and PLT reference counting (ie. we don't allow them to create GOT
3396 or PLT entries), there's no possibility or desire to optimize TLS
3397 relocs, and there's not much point in propagating relocs to shared
3398 libs that the dynamic linker won't relocate. */
3399 if ((sec->flags & SEC_ALLOC) == 0)
3403 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3407 BFD_ASSERT (is_ppc_elf (abfd));
3409 /* Initialize howto table if not already done. */
3410 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3411 ppc_elf_howto_init ();
3413 htab = ppc_elf_hash_table (info);
3414 if (htab->glink == NULL)
3416 if (htab->elf.dynobj == NULL)
3417 htab->elf.dynobj = abfd;
3418 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3421 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3422 FALSE, FALSE, TRUE);
3423 symtab_hdr = &elf_symtab_hdr (abfd);
3424 sym_hashes = elf_sym_hashes (abfd);
3425 got2 = bfd_get_section_by_name (abfd, ".got2");
3428 rel_end = relocs + sec->reloc_count;
3429 for (rel = relocs; rel < rel_end; rel++)
3431 unsigned long r_symndx;
3432 enum elf_ppc_reloc_type r_type;
3433 struct elf_link_hash_entry *h;
3435 struct plt_entry **ifunc;
3437 r_symndx = ELF32_R_SYM (rel->r_info);
3438 if (r_symndx < symtab_hdr->sh_info)
3442 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3443 while (h->root.type == bfd_link_hash_indirect
3444 || h->root.type == bfd_link_hash_warning)
3445 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3448 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3449 This shows up in particular in an R_PPC_ADDR32 in the eabi
3452 && htab->got == NULL
3453 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3455 if (htab->elf.dynobj == NULL)
3456 htab->elf.dynobj = abfd;
3457 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3459 BFD_ASSERT (h == htab->elf.hgot);
3464 r_type = ELF32_R_TYPE (rel->r_info);
3465 if (!htab->is_vxworks)
3469 if (h->type == STT_GNU_IFUNC)
3470 ifunc = &h->plt.plist;
3474 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3479 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
3481 || is_branch_reloc (r_type)))
3485 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3490 /* STT_GNU_IFUNC symbols must have a PLT entry;
3491 In a non-pie executable even when there are
3494 if (r_type == R_PPC_PLTREL24)
3496 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3498 addend = rel->r_addend;
3500 if (!update_plt_info (abfd, ifunc,
3501 addend < 32768 ? NULL : got2, addend))
3507 if (!htab->is_vxworks
3508 && is_branch_reloc (r_type)
3513 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3514 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3515 /* We have a new-style __tls_get_addr call with a marker
3519 /* Mark this section as having an old-style call. */
3520 sec->has_tls_get_addr_call = 1;
3527 /* These special tls relocs tie a call to __tls_get_addr with
3528 its parameter symbol. */
3531 case R_PPC_GOT_TLSLD16:
3532 case R_PPC_GOT_TLSLD16_LO:
3533 case R_PPC_GOT_TLSLD16_HI:
3534 case R_PPC_GOT_TLSLD16_HA:
3535 tls_type = TLS_TLS | TLS_LD;
3538 case R_PPC_GOT_TLSGD16:
3539 case R_PPC_GOT_TLSGD16_LO:
3540 case R_PPC_GOT_TLSGD16_HI:
3541 case R_PPC_GOT_TLSGD16_HA:
3542 tls_type = TLS_TLS | TLS_GD;
3545 case R_PPC_GOT_TPREL16:
3546 case R_PPC_GOT_TPREL16_LO:
3547 case R_PPC_GOT_TPREL16_HI:
3548 case R_PPC_GOT_TPREL16_HA:
3549 if (!info->executable)
3550 info->flags |= DF_STATIC_TLS;
3551 tls_type = TLS_TLS | TLS_TPREL;
3554 case R_PPC_GOT_DTPREL16:
3555 case R_PPC_GOT_DTPREL16_LO:
3556 case R_PPC_GOT_DTPREL16_HI:
3557 case R_PPC_GOT_DTPREL16_HA:
3558 tls_type = TLS_TLS | TLS_DTPREL;
3560 sec->has_tls_reloc = 1;
3563 /* GOT16 relocations */
3565 case R_PPC_GOT16_LO:
3566 case R_PPC_GOT16_HI:
3567 case R_PPC_GOT16_HA:
3568 /* This symbol requires a global offset table entry. */
3569 if (htab->got == NULL)
3571 if (htab->elf.dynobj == NULL)
3572 htab->elf.dynobj = abfd;
3573 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3578 h->got.refcount += 1;
3579 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
3582 /* This is a global offset table entry for a local symbol. */
3583 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
3586 /* We may also need a plt entry if the symbol turns out to be
3588 if (h != NULL && !info->shared)
3590 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3595 /* Indirect .sdata relocation. */
3596 case R_PPC_EMB_SDAI16:
3599 bad_shared_reloc (abfd, r_type);
3602 if (htab->sdata[0].section == NULL
3603 && !ppc_elf_create_linker_section (abfd, info, 0,
3606 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
3611 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3612 h->non_got_ref = TRUE;
3616 /* Indirect .sdata2 relocation. */
3617 case R_PPC_EMB_SDA2I16:
3620 bad_shared_reloc (abfd, r_type);
3623 if (htab->sdata[1].section == NULL
3624 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3627 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3632 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3633 h->non_got_ref = TRUE;
3637 case R_PPC_SDAREL16:
3638 if (htab->sdata[0].sym == NULL
3639 && !create_sdata_sym (info, &htab->sdata[0]))
3643 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3644 h->non_got_ref = TRUE;
3648 case R_PPC_EMB_SDA2REL:
3651 bad_shared_reloc (abfd, r_type);
3654 if (htab->sdata[1].sym == NULL
3655 && !create_sdata_sym (info, &htab->sdata[1]))
3659 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3660 h->non_got_ref = TRUE;
3664 case R_PPC_EMB_SDA21:
3665 case R_PPC_EMB_RELSDA:
3668 bad_shared_reloc (abfd, r_type);
3671 if (htab->sdata[0].sym == NULL
3672 && !create_sdata_sym (info, &htab->sdata[0]))
3674 if (htab->sdata[1].sym == NULL
3675 && !create_sdata_sym (info, &htab->sdata[1]))
3679 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
3680 h->non_got_ref = TRUE;
3684 case R_PPC_EMB_NADDR32:
3685 case R_PPC_EMB_NADDR16:
3686 case R_PPC_EMB_NADDR16_LO:
3687 case R_PPC_EMB_NADDR16_HI:
3688 case R_PPC_EMB_NADDR16_HA:
3691 bad_shared_reloc (abfd, r_type);
3695 h->non_got_ref = TRUE;
3698 case R_PPC_PLTREL24:
3703 case R_PPC_PLTREL32:
3704 case R_PPC_PLT16_LO:
3705 case R_PPC_PLT16_HI:
3706 case R_PPC_PLT16_HA:
3708 fprintf (stderr, "Reloc requires a PLT entry\n");
3710 /* This symbol requires a procedure linkage table entry. We
3711 actually build the entry in finish_dynamic_symbol,
3712 because this might be a case of linking PIC code without
3713 linking in any dynamic objects, in which case we don't
3714 need to generate a procedure linkage table after all. */
3718 /* It does not make sense to have a procedure linkage
3719 table entry for a local symbol. */
3720 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3724 (long) rel->r_offset,
3725 ppc_elf_howto_table[r_type]->name);
3726 bfd_set_error (bfd_error_bad_value);
3733 if (r_type == R_PPC_PLTREL24)
3735 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3737 addend = rel->r_addend;
3740 if (!update_plt_info (abfd, &h->plt.plist,
3741 addend < 32768 ? NULL : got2, addend))
3746 /* The following relocations don't need to propagate the
3747 relocation if linking a shared object since they are
3748 section relative. */
3750 case R_PPC_SECTOFF_LO:
3751 case R_PPC_SECTOFF_HI:
3752 case R_PPC_SECTOFF_HA:
3753 case R_PPC_DTPREL16:
3754 case R_PPC_DTPREL16_LO:
3755 case R_PPC_DTPREL16_HI:
3756 case R_PPC_DTPREL16_HA:
3761 case R_PPC_REL16_LO:
3762 case R_PPC_REL16_HI:
3763 case R_PPC_REL16_HA:
3764 ppc_elf_tdata (abfd)->has_rel16 = 1;
3767 /* These are just markers. */
3769 case R_PPC_EMB_MRKREF:
3773 case R_PPC_RELAX32PC:
3774 case R_PPC_RELAX32_PLT:
3775 case R_PPC_RELAX32PC_PLT:
3778 /* These should only appear in dynamic objects. */
3780 case R_PPC_GLOB_DAT:
3781 case R_PPC_JMP_SLOT:
3782 case R_PPC_RELATIVE:
3783 case R_PPC_IRELATIVE:
3786 /* These aren't handled yet. We'll report an error later. */
3788 case R_PPC_EMB_RELSEC16:
3789 case R_PPC_EMB_RELST_LO:
3790 case R_PPC_EMB_RELST_HI:
3791 case R_PPC_EMB_RELST_HA:
3792 case R_PPC_EMB_BIT_FLD:
3795 /* This refers only to functions defined in the shared library. */
3796 case R_PPC_LOCAL24PC:
3797 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
3799 htab->plt_type = PLT_OLD;
3800 htab->old_bfd = abfd;
3804 /* This relocation describes the C++ object vtable hierarchy.
3805 Reconstruct it for later use during GC. */
3806 case R_PPC_GNU_VTINHERIT:
3807 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3811 /* This relocation describes which C++ vtable entries are actually
3812 used. Record for later use during GC. */
3813 case R_PPC_GNU_VTENTRY:
3814 BFD_ASSERT (h != NULL);
3816 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3820 /* We shouldn't really be seeing these. */
3823 case R_PPC_TPREL16_LO:
3824 case R_PPC_TPREL16_HI:
3825 case R_PPC_TPREL16_HA:
3826 if (!info->executable)
3827 info->flags |= DF_STATIC_TLS;
3831 case R_PPC_DTPMOD32:
3832 case R_PPC_DTPREL32:
3838 && (sec->flags & SEC_CODE) != 0
3840 && htab->plt_type == PLT_UNSET)
3842 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
3843 the start of a function, which assembles to a REL32
3844 reference to .got2. If we detect one of these, then
3845 force the old PLT layout because the linker cannot
3846 reliably deduce the GOT pointer value needed for
3849 Elf_Internal_Sym *isym;
3851 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3856 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3859 htab->plt_type = PLT_OLD;
3860 htab->old_bfd = abfd;
3863 if (h == NULL || h == htab->elf.hgot)
3869 case R_PPC_ADDR16_LO:
3870 case R_PPC_ADDR16_HI:
3871 case R_PPC_ADDR16_HA:
3874 if (h != NULL && !info->shared)
3876 /* We may need a plt entry if the symbol turns out to be
3877 a function defined in a dynamic object. */
3878 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3881 /* We may need a copy reloc too. */
3883 h->pointer_equality_needed = 1;
3889 case R_PPC_REL14_BRTAKEN:
3890 case R_PPC_REL14_BRNTAKEN:
3893 if (h == htab->elf.hgot)
3895 if (htab->plt_type == PLT_UNSET)
3897 htab->plt_type = PLT_OLD;
3898 htab->old_bfd = abfd;
3906 case R_PPC_ADDR14_BRTAKEN:
3907 case R_PPC_ADDR14_BRNTAKEN:
3908 if (h != NULL && !info->shared)
3910 /* We may need a plt entry if the symbol turns out to be
3911 a function defined in a dynamic object. */
3913 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
3919 /* If we are creating a shared library, and this is a reloc
3920 against a global symbol, or a non PC relative reloc
3921 against a local symbol, then we need to copy the reloc
3922 into the shared library. However, if we are linking with
3923 -Bsymbolic, we do not need to copy a reloc against a
3924 global symbol which is defined in an object we are
3925 including in the link (i.e., DEF_REGULAR is set). At
3926 this point we have not seen all the input files, so it is
3927 possible that DEF_REGULAR is not set now but will be set
3928 later (it is never cleared). In case of a weak definition,
3929 DEF_REGULAR may be cleared later by a strong definition in
3930 a shared library. We account for that possibility below by
3931 storing information in the dyn_relocs field of the hash
3932 table entry. A similar situation occurs when creating
3933 shared libraries and symbol visibility changes render the
3936 If on the other hand, we are creating an executable, we
3937 may need to keep relocations for symbols satisfied by a
3938 dynamic library if we manage to avoid copy relocs for the
3941 && (must_be_dyn_reloc (info, r_type)
3943 && (! info->symbolic
3944 || h->root.type == bfd_link_hash_defweak
3945 || !h->def_regular))))
3946 || (ELIMINATE_COPY_RELOCS
3949 && (h->root.type == bfd_link_hash_defweak
3950 || !h->def_regular)))
3952 struct ppc_elf_dyn_relocs *p;
3953 struct ppc_elf_dyn_relocs **head;
3957 "ppc_elf_check_relocs needs to "
3958 "create relocation for %s\n",
3959 (h && h->root.root.string
3960 ? h->root.root.string : "<unknown>"));
3964 if (htab->elf.dynobj == NULL)
3965 htab->elf.dynobj = abfd;
3967 sreloc = _bfd_elf_make_dynamic_reloc_section
3968 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
3974 /* If this is a global symbol, we count the number of
3975 relocations we need for this symbol. */
3978 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3982 /* Track dynamic relocs needed for local syms too.
3983 We really need local syms available to do this
3987 Elf_Internal_Sym *isym;
3989 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3994 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
3998 vpp = &elf_section_data (s)->local_dynrel;
3999 head = (struct ppc_elf_dyn_relocs **) vpp;
4003 if (p == NULL || p->sec != sec)
4005 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4016 if (!must_be_dyn_reloc (info, r_type))
4028 /* Merge object attributes from IBFD into OBFD. Raise an error if
4029 there are conflicting attributes. */
4031 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4033 obj_attribute *in_attr, *in_attrs;
4034 obj_attribute *out_attr, *out_attrs;
4036 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4038 /* This is the first object. Copy the attributes. */
4039 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4041 /* Use the Tag_null value to indicate the attributes have been
4043 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4048 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4049 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4051 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4052 non-conflicting ones. */
4053 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4054 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4055 if (in_attr->i != out_attr->i)
4058 if (out_attr->i == 0)
4059 out_attr->i = in_attr->i;
4060 else if (in_attr->i == 0)
4062 else if (out_attr->i == 1 && in_attr->i == 2)
4064 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4065 else if (out_attr->i == 1 && in_attr->i == 3)
4067 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4069 else if (out_attr->i == 3 && in_attr->i == 1)
4071 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4073 else if (out_attr->i == 3 && in_attr->i == 2)
4075 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4077 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4079 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4080 else if (in_attr->i > 3)
4082 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4086 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4090 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4091 merge non-conflicting ones. */
4092 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4093 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4094 if (in_attr->i != out_attr->i)
4096 const char *in_abi = NULL, *out_abi = NULL;
4100 case 1: in_abi = "generic"; break;
4101 case 2: in_abi = "AltiVec"; break;
4102 case 3: in_abi = "SPE"; break;
4105 switch (out_attr->i)
4107 case 1: out_abi = "generic"; break;
4108 case 2: out_abi = "AltiVec"; break;
4109 case 3: out_abi = "SPE"; break;
4113 if (out_attr->i == 0)
4114 out_attr->i = in_attr->i;
4115 else if (in_attr->i == 0)
4117 /* For now, allow generic to transition to AltiVec or SPE
4118 without a warning. If GCC marked files with their stack
4119 alignment and used don't-care markings for files which are
4120 not affected by the vector ABI, we could warn about this
4122 else if (out_attr->i == 1)
4123 out_attr->i = in_attr->i;
4124 else if (in_attr->i == 1)
4126 else if (in_abi == NULL)
4128 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4130 else if (out_abi == NULL)
4132 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4136 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4137 ibfd, obfd, in_abi, out_abi);
4140 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4141 and merge non-conflicting ones. */
4142 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4143 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4144 if (in_attr->i != out_attr->i)
4147 if (out_attr->i == 0)
4148 out_attr->i = in_attr->i;
4149 else if (in_attr->i == 0)
4151 else if (out_attr->i == 1 && in_attr->i == 2)
4153 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4154 else if (out_attr->i == 2 && in_attr->i == 1)
4156 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4157 else if (in_attr->i > 2)
4159 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4163 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4167 /* Merge Tag_compatibility attributes and any common GNU ones. */
4168 _bfd_elf_merge_object_attributes (ibfd, obfd);
4173 /* Merge backend specific data from an object file to the output
4174 object file when linking. */
4177 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4183 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4186 /* Check if we have the same endianess. */
4187 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4190 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4193 new_flags = elf_elfheader (ibfd)->e_flags;
4194 old_flags = elf_elfheader (obfd)->e_flags;
4195 if (!elf_flags_init (obfd))
4197 /* First call, no flags set. */
4198 elf_flags_init (obfd) = TRUE;
4199 elf_elfheader (obfd)->e_flags = new_flags;
4202 /* Compatible flags are ok. */
4203 else if (new_flags == old_flags)
4206 /* Incompatible flags. */
4209 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4210 to be linked with either. */
4212 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4213 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4216 (*_bfd_error_handler)
4217 (_("%B: compiled with -mrelocatable and linked with "
4218 "modules compiled normally"), ibfd);
4220 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4221 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4224 (*_bfd_error_handler)
4225 (_("%B: compiled normally and linked with "
4226 "modules compiled with -mrelocatable"), ibfd);
4229 /* The output is -mrelocatable-lib iff both the input files are. */
4230 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4231 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4233 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4234 but each input file is either -mrelocatable or -mrelocatable-lib. */
4235 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4236 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4237 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4238 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4240 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4241 any module uses it. */
4242 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4244 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4245 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4247 /* Warn about any other mismatches. */
4248 if (new_flags != old_flags)
4251 (*_bfd_error_handler)
4252 (_("%B: uses different e_flags (0x%lx) fields "
4253 "than previous modules (0x%lx)"),
4254 ibfd, (long) new_flags, (long) old_flags);
4259 bfd_set_error (bfd_error_bad_value);
4267 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4268 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4270 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4271 struct bfd_link_info *info,
4272 enum ppc_elf_plt_type plt_style,
4275 struct ppc_elf_link_hash_table *htab;
4278 htab = ppc_elf_hash_table (info);
4280 if (htab->plt_type == PLT_UNSET)
4282 if (plt_style == PLT_OLD)
4283 htab->plt_type = PLT_OLD;
4287 enum ppc_elf_plt_type plt_type = plt_style;
4289 /* Look through the reloc flags left by ppc_elf_check_relocs.
4290 Use the old style bss plt if a file makes plt calls
4291 without using the new relocs, and if ld isn't given
4292 --secure-plt and we never see REL16 relocs. */
4293 if (plt_type == PLT_UNSET)
4295 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4296 if (is_ppc_elf (ibfd))
4298 if (ppc_elf_tdata (ibfd)->has_rel16)
4300 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4303 htab->old_bfd = ibfd;
4307 htab->plt_type = plt_type;
4310 if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
4311 info->callbacks->info (_("Using bss-plt due to %B"), htab->old_bfd);
4313 htab->emit_stub_syms = emit_stub_syms;
4315 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4317 if (htab->plt_type == PLT_NEW)
4319 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4320 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4322 /* The new PLT is a loaded section. */
4323 if (htab->plt != NULL
4324 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4327 /* The new GOT is not executable. */
4328 if (htab->got != NULL
4329 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4334 /* Stop an unused .glink section from affecting .text alignment. */
4335 if (htab->glink != NULL
4336 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4339 return htab->plt_type == PLT_NEW;
4342 /* Return the section that should be marked against GC for a given
4346 ppc_elf_gc_mark_hook (asection *sec,
4347 struct bfd_link_info *info,
4348 Elf_Internal_Rela *rel,
4349 struct elf_link_hash_entry *h,
4350 Elf_Internal_Sym *sym)
4353 switch (ELF32_R_TYPE (rel->r_info))
4355 case R_PPC_GNU_VTINHERIT:
4356 case R_PPC_GNU_VTENTRY:
4360 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4363 /* Update the got, plt and dynamic reloc reference counts for the
4364 section being removed. */
4367 ppc_elf_gc_sweep_hook (bfd *abfd,
4368 struct bfd_link_info *info,
4370 const Elf_Internal_Rela *relocs)
4372 struct ppc_elf_link_hash_table *htab;
4373 Elf_Internal_Shdr *symtab_hdr;
4374 struct elf_link_hash_entry **sym_hashes;
4375 bfd_signed_vma *local_got_refcounts;
4376 const Elf_Internal_Rela *rel, *relend;
4379 if (info->relocatable)
4382 if ((sec->flags & SEC_ALLOC) == 0)
4385 elf_section_data (sec)->local_dynrel = NULL;
4387 htab = ppc_elf_hash_table (info);
4388 symtab_hdr = &elf_symtab_hdr (abfd);
4389 sym_hashes = elf_sym_hashes (abfd);
4390 local_got_refcounts = elf_local_got_refcounts (abfd);
4391 got2 = bfd_get_section_by_name (abfd, ".got2");
4393 relend = relocs + sec->reloc_count;
4394 for (rel = relocs; rel < relend; rel++)
4396 unsigned long r_symndx;
4397 enum elf_ppc_reloc_type r_type;
4398 struct elf_link_hash_entry *h = NULL;
4400 r_symndx = ELF32_R_SYM (rel->r_info);
4401 if (r_symndx >= symtab_hdr->sh_info)
4403 struct ppc_elf_dyn_relocs **pp, *p;
4404 struct ppc_elf_link_hash_entry *eh;
4406 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4407 while (h->root.type == bfd_link_hash_indirect
4408 || h->root.type == bfd_link_hash_warning)
4409 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4410 eh = (struct ppc_elf_link_hash_entry *) h;
4412 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4415 /* Everything must go for SEC. */
4421 r_type = ELF32_R_TYPE (rel->r_info);
4422 if (!htab->is_vxworks
4424 && local_got_refcounts != NULL
4426 || is_branch_reloc (r_type)))
4428 struct plt_entry **local_plt = (struct plt_entry **)
4429 (local_got_refcounts + symtab_hdr->sh_info);
4430 char *local_got_tls_masks = (char *)
4431 (local_plt + symtab_hdr->sh_info);
4432 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4434 struct plt_entry **ifunc = local_plt + r_symndx;
4436 struct plt_entry *ent;
4438 if (r_type == R_PPC_PLTREL24 && info->shared)
4439 addend = rel->r_addend;
4440 ent = find_plt_ent (ifunc, got2, addend);
4441 if (ent->plt.refcount > 0)
4442 ent->plt.refcount -= 1;
4449 case R_PPC_GOT_TLSLD16:
4450 case R_PPC_GOT_TLSLD16_LO:
4451 case R_PPC_GOT_TLSLD16_HI:
4452 case R_PPC_GOT_TLSLD16_HA:
4453 case R_PPC_GOT_TLSGD16:
4454 case R_PPC_GOT_TLSGD16_LO:
4455 case R_PPC_GOT_TLSGD16_HI:
4456 case R_PPC_GOT_TLSGD16_HA:
4457 case R_PPC_GOT_TPREL16:
4458 case R_PPC_GOT_TPREL16_LO:
4459 case R_PPC_GOT_TPREL16_HI:
4460 case R_PPC_GOT_TPREL16_HA:
4461 case R_PPC_GOT_DTPREL16:
4462 case R_PPC_GOT_DTPREL16_LO:
4463 case R_PPC_GOT_DTPREL16_HI:
4464 case R_PPC_GOT_DTPREL16_HA:
4466 case R_PPC_GOT16_LO:
4467 case R_PPC_GOT16_HI:
4468 case R_PPC_GOT16_HA:
4471 if (h->got.refcount > 0)
4475 struct plt_entry *ent;
4477 ent = find_plt_ent (&h->plt.plist, NULL, 0);
4478 if (ent->plt.refcount > 0)
4479 ent->plt.refcount -= 1;
4482 else if (local_got_refcounts != NULL)
4484 if (local_got_refcounts[r_symndx] > 0)
4485 local_got_refcounts[r_symndx]--;
4491 case R_PPC_REL14_BRTAKEN:
4492 case R_PPC_REL14_BRNTAKEN:
4494 if (h == NULL || h == htab->elf.hgot)
4501 case R_PPC_ADDR16_LO:
4502 case R_PPC_ADDR16_HI:
4503 case R_PPC_ADDR16_HA:
4505 case R_PPC_ADDR14_BRTAKEN:
4506 case R_PPC_ADDR14_BRNTAKEN:
4513 case R_PPC_PLTREL24:
4514 case R_PPC_PLTREL32:
4515 case R_PPC_PLT16_LO:
4516 case R_PPC_PLT16_HI:
4517 case R_PPC_PLT16_HA:
4521 struct plt_entry *ent;
4523 if (r_type == R_PPC_PLTREL24 && info->shared)
4524 addend = rel->r_addend;
4525 ent = find_plt_ent (&h->plt.plist, got2, addend);
4526 if (ent->plt.refcount > 0)
4527 ent->plt.refcount -= 1;
4538 /* Set plt output section type, htab->tls_get_addr, and call the
4539 generic ELF tls_setup function. */
4542 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
4544 struct ppc_elf_link_hash_table *htab;
4546 htab = ppc_elf_hash_table (info);
4547 if (htab->plt_type == PLT_NEW
4548 && htab->plt != NULL
4549 && htab->plt->output_section != NULL)
4551 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
4552 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
4555 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4556 FALSE, FALSE, TRUE);
4557 return _bfd_elf_tls_setup (obfd, info);
4560 /* Return TRUE iff REL is a branch reloc with a global symbol matching
4564 branch_reloc_hash_match (const bfd *ibfd,
4565 const Elf_Internal_Rela *rel,
4566 const struct elf_link_hash_entry *hash)
4568 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4569 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
4570 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
4572 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
4574 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4575 struct elf_link_hash_entry *h;
4577 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4578 while (h->root.type == bfd_link_hash_indirect
4579 || h->root.type == bfd_link_hash_warning)
4580 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4587 /* Run through all the TLS relocs looking for optimization
4591 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
4592 struct bfd_link_info *info)
4596 struct ppc_elf_link_hash_table *htab;
4599 if (info->relocatable || !info->executable)
4602 htab = ppc_elf_hash_table (info);
4603 /* Make two passes through the relocs. First time check that tls
4604 relocs involved in setting up a tls_get_addr call are indeed
4605 followed by such a call. If they are not, exclude them from
4606 the optimizations done on the second pass. */
4607 for (pass = 0; pass < 2; ++pass)
4608 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4610 Elf_Internal_Sym *locsyms = NULL;
4611 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
4613 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
4614 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
4616 Elf_Internal_Rela *relstart, *rel, *relend;
4618 /* Read the relocations. */
4619 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4621 if (relstart == NULL)
4624 relend = relstart + sec->reloc_count;
4625 for (rel = relstart; rel < relend; rel++)
4627 enum elf_ppc_reloc_type r_type;
4628 unsigned long r_symndx;
4629 struct elf_link_hash_entry *h = NULL;
4631 char tls_set, tls_clear;
4632 bfd_boolean is_local;
4633 int expecting_tls_get_addr;
4634 bfd_signed_vma *got_count;
4636 r_symndx = ELF32_R_SYM (rel->r_info);
4637 if (r_symndx >= symtab_hdr->sh_info)
4639 struct elf_link_hash_entry **sym_hashes;
4641 sym_hashes = elf_sym_hashes (ibfd);
4642 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4643 while (h->root.type == bfd_link_hash_indirect
4644 || h->root.type == bfd_link_hash_warning)
4645 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4648 expecting_tls_get_addr = 0;
4654 r_type = ELF32_R_TYPE (rel->r_info);
4657 case R_PPC_GOT_TLSLD16:
4658 case R_PPC_GOT_TLSLD16_LO:
4659 expecting_tls_get_addr = 1;
4662 case R_PPC_GOT_TLSLD16_HI:
4663 case R_PPC_GOT_TLSLD16_HA:
4664 /* These relocs should never be against a symbol
4665 defined in a shared lib. Leave them alone if
4666 that turns out to be the case. */
4675 case R_PPC_GOT_TLSGD16:
4676 case R_PPC_GOT_TLSGD16_LO:
4677 expecting_tls_get_addr = 1;
4680 case R_PPC_GOT_TLSGD16_HI:
4681 case R_PPC_GOT_TLSGD16_HA:
4687 tls_set = TLS_TLS | TLS_TPRELGD;
4691 case R_PPC_GOT_TPREL16:
4692 case R_PPC_GOT_TPREL16_LO:
4693 case R_PPC_GOT_TPREL16_HI:
4694 case R_PPC_GOT_TPREL16_HA:
4699 tls_clear = TLS_TPREL;
4711 if (!expecting_tls_get_addr
4712 || !sec->has_tls_get_addr_call)
4715 if (rel + 1 < relend
4716 && branch_reloc_hash_match (ibfd, rel + 1,
4717 htab->tls_get_addr))
4720 /* Uh oh, we didn't find the expected call. We
4721 could just mark this symbol to exclude it
4722 from tls optimization but it's safer to skip
4723 the entire section. */
4724 sec->has_tls_reloc = 0;
4730 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
4731 got_count = &h->got.refcount;
4735 Elf_Internal_Sym *sym;
4736 bfd_signed_vma *lgot_refs;
4737 struct plt_entry **local_plt;
4740 if (locsyms == NULL)
4742 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4743 if (locsyms == NULL)
4744 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4745 symtab_hdr->sh_info,
4746 0, NULL, NULL, NULL);
4747 if (locsyms == NULL)
4749 if (elf_section_data (sec)->relocs != relstart)
4754 sym = locsyms + r_symndx;
4755 lgot_refs = elf_local_got_refcounts (ibfd);
4756 if (lgot_refs == NULL)
4758 local_plt = (struct plt_entry **)
4759 (lgot_refs + symtab_hdr->sh_info);
4760 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
4761 tls_mask = &lgot_masks[r_symndx];
4762 got_count = &lgot_refs[r_symndx];
4767 /* We managed to get rid of a got entry. */
4772 if (expecting_tls_get_addr)
4774 struct plt_entry *ent;
4776 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
4778 if (ent != NULL && ent->plt.refcount > 0)
4779 ent->plt.refcount -= 1;
4782 *tls_mask |= tls_set;
4783 *tls_mask &= ~tls_clear;
4786 if (elf_section_data (sec)->relocs != relstart)
4791 && (symtab_hdr->contents != (unsigned char *) locsyms))
4793 if (!info->keep_memory)
4796 symtab_hdr->contents = (unsigned char *) locsyms;
4802 /* Return true if we have dynamic relocs that apply to read-only sections. */
4805 readonly_dynrelocs (struct elf_link_hash_entry *h)
4807 struct ppc_elf_dyn_relocs *p;
4809 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4811 asection *s = p->sec->output_section;
4814 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4815 == (SEC_READONLY | SEC_ALLOC)))
4821 /* Adjust a symbol defined by a dynamic object and referenced by a
4822 regular object. The current definition is in some section of the
4823 dynamic object, but we're not including those sections. We have to
4824 change the definition to something the rest of the link can
4828 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4829 struct elf_link_hash_entry *h)
4831 struct ppc_elf_link_hash_table *htab;
4835 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
4836 h->root.root.string);
4839 /* Make sure we know what is going on here. */
4840 htab = ppc_elf_hash_table (info);
4841 BFD_ASSERT (htab->elf.dynobj != NULL
4843 || h->type == STT_GNU_IFUNC
4844 || h->u.weakdef != NULL
4847 && !h->def_regular)));
4849 /* Deal with function syms. */
4850 if (h->type == STT_FUNC
4851 || h->type == STT_GNU_IFUNC
4854 /* Clear procedure linkage table information for any symbol that
4855 won't need a .plt entry. */
4856 struct plt_entry *ent;
4857 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4858 if (ent->plt.refcount > 0)
4861 || (h->type != STT_GNU_IFUNC
4862 && (SYMBOL_CALLS_LOCAL (info, h)
4863 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4864 && h->root.type == bfd_link_hash_undefweak))))
4866 /* A PLT entry is not required/allowed when:
4868 1. We are not using ld.so; because then the PLT entry
4869 can't be set up, so we can't use one. In this case,
4870 ppc_elf_adjust_dynamic_symbol won't even be called.
4872 2. GC has rendered the entry unused.
4874 3. We know for certain that a call to this symbol
4875 will go to this object, or will remain undefined. */
4876 h->plt.plist = NULL;
4881 /* After adjust_dynamic_symbol, non_got_ref set in the
4882 non-shared case means that we have allocated space in
4883 .dynbss for the symbol and thus dyn_relocs for this
4884 symbol should be discarded.
4885 If we get here we know we are making a PLT entry for this
4886 symbol, and in an executable we'd normally resolve
4887 relocations against this symbol to the PLT entry. Allow
4888 dynamic relocs if the reference is weak, and the dynamic
4889 relocs will not cause text relocation. */
4890 if (!h->ref_regular_nonweak
4892 && h->type != STT_GNU_IFUNC
4893 && !htab->is_vxworks
4894 && !ppc_elf_hash_entry (h)->has_sda_refs
4895 && !readonly_dynrelocs (h))
4901 h->plt.plist = NULL;
4903 /* If this is a weak symbol, and there is a real definition, the
4904 processor independent code will have arranged for us to see the
4905 real definition first, and we can just use the same value. */
4906 if (h->u.weakdef != NULL)
4908 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4909 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4910 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4911 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4912 if (ELIMINATE_COPY_RELOCS)
4913 h->non_got_ref = h->u.weakdef->non_got_ref;
4917 /* This is a reference to a symbol defined by a dynamic object which
4918 is not a function. */
4920 /* If we are creating a shared library, we must presume that the
4921 only references to the symbol are via the global offset table.
4922 For such cases we need not do anything here; the relocations will
4923 be handled correctly by relocate_section. */
4927 /* If there are no references to this symbol that do not use the
4928 GOT, we don't need to generate a copy reloc. */
4929 if (!h->non_got_ref)
4932 /* If we didn't find any dynamic relocs in read-only sections, then
4933 we'll be keeping the dynamic relocs and avoiding the copy reloc.
4934 We can't do this if there are any small data relocations. This
4935 doesn't work on VxWorks, where we can not have dynamic
4936 relocations (other than copy and jump slot relocations) in an
4938 if (ELIMINATE_COPY_RELOCS
4939 && !ppc_elf_hash_entry (h)->has_sda_refs
4940 && !htab->is_vxworks
4942 && !readonly_dynrelocs (h))
4950 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
4951 h->root.root.string);
4955 /* We must allocate the symbol in our .dynbss section, which will
4956 become part of the .bss section of the executable. There will be
4957 an entry for this symbol in the .dynsym section. The dynamic
4958 object will contain position independent code, so all references
4959 from the dynamic object to this symbol will go through the global
4960 offset table. The dynamic linker will use the .dynsym entry to
4961 determine the address it must put in the global offset table, so
4962 both the dynamic object and the regular object will refer to the
4963 same memory location for the variable.
4965 Of course, if the symbol is referenced using SDAREL relocs, we
4966 must instead allocate it in .sbss. */
4968 if (ppc_elf_hash_entry (h)->has_sda_refs)
4972 BFD_ASSERT (s != NULL);
4974 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
4975 copy the initial value out of the dynamic object and into the
4976 runtime process image. We need to remember the offset into the
4977 .rela.bss section we are going to use. */
4978 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4982 if (ppc_elf_hash_entry (h)->has_sda_refs)
4983 srel = htab->relsbss;
4985 srel = htab->relbss;
4986 BFD_ASSERT (srel != NULL);
4987 srel->size += sizeof (Elf32_External_Rela);
4991 return _bfd_elf_adjust_dynamic_copy (h, s);
4994 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
4995 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
4996 specifying the addend on the plt relocation. For -fpic code, the sym
4997 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
4998 xxxxxxxx.got2.plt_pic32.<callee>. */
5001 add_stub_sym (struct plt_entry *ent,
5002 struct elf_link_hash_entry *h,
5003 struct bfd_link_info *info)
5005 struct elf_link_hash_entry *sh;
5006 size_t len1, len2, len3;
5009 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5012 stub = ".plt_pic32.";
5014 stub = ".plt_call32.";
5016 len1 = strlen (h->root.root.string);
5017 len2 = strlen (stub);
5020 len3 = strlen (ent->sec->name);
5021 name = bfd_malloc (len1 + len2 + len3 + 9);
5024 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5026 memcpy (name + 8, ent->sec->name, len3);
5027 memcpy (name + 8 + len3, stub, len2);
5028 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5029 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5032 if (sh->root.type == bfd_link_hash_new)
5034 sh->root.type = bfd_link_hash_defined;
5035 sh->root.u.def.section = htab->glink;
5036 sh->root.u.def.value = ent->glink_offset;
5037 sh->ref_regular = 1;
5038 sh->def_regular = 1;
5039 sh->ref_regular_nonweak = 1;
5040 sh->forced_local = 1;
5046 /* Allocate NEED contiguous space in .got, and return the offset.
5047 Handles allocation of the got header when crossing 32k. */
5050 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5053 unsigned int max_before_header;
5055 if (htab->plt_type == PLT_VXWORKS)
5057 where = htab->got->size;
5058 htab->got->size += need;
5062 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5063 if (need <= htab->got_gap)
5065 where = max_before_header - htab->got_gap;
5066 htab->got_gap -= need;
5070 if (htab->got->size + need > max_before_header
5071 && htab->got->size <= max_before_header)
5073 htab->got_gap = max_before_header - htab->got->size;
5074 htab->got->size = max_before_header + htab->got_header_size;
5076 where = htab->got->size;
5077 htab->got->size += need;
5083 /* Allocate space in associated reloc sections for dynamic relocs. */
5086 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5088 struct bfd_link_info *info = inf;
5089 struct ppc_elf_link_hash_entry *eh;
5090 struct ppc_elf_link_hash_table *htab;
5091 struct ppc_elf_dyn_relocs *p;
5093 if (h->root.type == bfd_link_hash_indirect)
5096 if (h->root.type == bfd_link_hash_warning)
5097 /* When warning symbols are created, they **replace** the "real"
5098 entry in the hash table, thus we never get to see the real
5099 symbol in a hash traversal. So look at it now. */
5100 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5102 htab = ppc_elf_hash_table (info);
5103 if (htab->elf.dynamic_sections_created
5104 || h->type == STT_GNU_IFUNC)
5106 struct plt_entry *ent;
5107 bfd_boolean doneone = FALSE;
5108 bfd_vma plt_offset = 0, glink_offset = 0;
5111 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5112 if (ent->plt.refcount > 0)
5114 /* Make sure this symbol is output as a dynamic symbol. */
5115 if (h->dynindx == -1
5118 && htab->elf.dynamic_sections_created)
5120 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5124 dyn = htab->elf.dynamic_sections_created;
5126 || h->type == STT_GNU_IFUNC
5127 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5129 asection *s = htab->plt;
5130 if (!dyn || h->dynindx == -1)
5133 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5137 plt_offset = s->size;
5140 ent->plt.offset = plt_offset;
5143 if (!doneone || info->shared)
5145 glink_offset = s->size;
5146 s->size += GLINK_ENTRY_SIZE;
5153 h->root.u.def.section = s;
5154 h->root.u.def.value = glink_offset;
5156 ent->glink_offset = glink_offset;
5158 if (htab->emit_stub_syms
5159 && !add_stub_sym (ent, h, info))
5166 /* If this is the first .plt entry, make room
5167 for the special first entry. */
5169 s->size += htab->plt_initial_entry_size;
5171 /* The PowerPC PLT is actually composed of two
5172 parts, the first part is 2 words (for a load
5173 and a jump), and then there is a remaining
5174 word available at the end. */
5175 plt_offset = (htab->plt_initial_entry_size
5176 + (htab->plt_slot_size
5178 - htab->plt_initial_entry_size)
5179 / htab->plt_entry_size)));
5181 /* If this symbol is not defined in a regular
5182 file, and we are not generating a shared
5183 library, then set the symbol to this location
5184 in the .plt. This is to avoid text
5185 relocations, and is required to make
5186 function pointers compare as equal between
5187 the normal executable and the shared library. */
5192 h->root.u.def.section = s;
5193 h->root.u.def.value = plt_offset;
5196 /* Make room for this entry. */
5197 s->size += htab->plt_entry_size;
5198 /* After the 8192nd entry, room for two entries
5200 if (htab->plt_type == PLT_OLD
5201 && (s->size - htab->plt_initial_entry_size)
5202 / htab->plt_entry_size
5203 > PLT_NUM_SINGLE_ENTRIES)
5204 s->size += htab->plt_entry_size;
5206 ent->plt.offset = plt_offset;
5209 /* We also need to make an entry in the .rela.plt section. */
5212 if (!htab->elf.dynamic_sections_created
5213 || h->dynindx == -1)
5214 htab->reliplt->size += sizeof (Elf32_External_Rela);
5217 htab->relplt->size += sizeof (Elf32_External_Rela);
5219 if (htab->plt_type == PLT_VXWORKS)
5221 /* Allocate space for the unloaded relocations. */
5223 && htab->elf.dynamic_sections_created)
5226 == (bfd_vma) htab->plt_initial_entry_size)
5228 htab->srelplt2->size
5229 += (sizeof (Elf32_External_Rela)
5230 * VXWORKS_PLTRESOLVE_RELOCS);
5233 htab->srelplt2->size
5234 += (sizeof (Elf32_External_Rela)
5235 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5238 /* Every PLT entry has an associated GOT entry in
5240 htab->sgotplt->size += 4;
5247 ent->plt.offset = (bfd_vma) -1;
5250 ent->plt.offset = (bfd_vma) -1;
5254 h->plt.plist = NULL;
5260 h->plt.plist = NULL;
5264 eh = (struct ppc_elf_link_hash_entry *) h;
5265 if (eh->elf.got.refcount > 0)
5270 /* Make sure this symbol is output as a dynamic symbol. */
5271 if (eh->elf.dynindx == -1
5272 && !eh->elf.forced_local
5273 && eh->elf.type != STT_GNU_IFUNC
5274 && htab->elf.dynamic_sections_created)
5276 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5281 if ((eh->tls_mask & TLS_TLS) != 0)
5283 if ((eh->tls_mask & TLS_LD) != 0)
5285 if (!eh->elf.def_dynamic)
5286 /* We'll just use htab->tlsld_got.offset. This should
5287 always be the case. It's a little odd if we have
5288 a local dynamic reloc against a non-local symbol. */
5289 htab->tlsld_got.refcount += 1;
5293 if ((eh->tls_mask & TLS_GD) != 0)
5295 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5297 if ((eh->tls_mask & TLS_DTPREL) != 0)
5303 eh->elf.got.offset = (bfd_vma) -1;
5306 eh->elf.got.offset = allocate_got (htab, need);
5307 dyn = htab->elf.dynamic_sections_created;
5309 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5310 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5311 || eh->elf.root.type != bfd_link_hash_undefweak))
5313 asection *rsec = htab->relgot;
5314 /* All the entries we allocated need relocs.
5315 Except LD only needs one. */
5316 if ((eh->tls_mask & TLS_LD) != 0
5317 && eh->elf.def_dynamic)
5319 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5324 eh->elf.got.offset = (bfd_vma) -1;
5326 if (eh->dyn_relocs == NULL
5327 || !htab->elf.dynamic_sections_created)
5330 /* In the shared -Bsymbolic case, discard space allocated for
5331 dynamic pc-relative relocs against symbols which turn out to be
5332 defined in regular objects. For the normal shared case, discard
5333 space for relocs that have become local due to symbol visibility
5338 /* Relocs that use pc_count are those that appear on a call insn,
5339 or certain REL relocs (see must_be_dyn_reloc) that can be
5340 generated via assembly. We want calls to protected symbols to
5341 resolve directly to the function rather than going via the plt.
5342 If people want function pointer comparisons to work as expected
5343 then they should avoid writing weird assembly. */
5344 if (SYMBOL_CALLS_LOCAL (info, h))
5346 struct ppc_elf_dyn_relocs **pp;
5348 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5350 p->count -= p->pc_count;
5359 if (htab->is_vxworks)
5361 struct ppc_elf_dyn_relocs **pp;
5363 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5365 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5372 /* Discard relocs on undefined symbols that must be local. */
5373 if (eh->dyn_relocs != NULL
5374 && h->root.type == bfd_link_hash_undefined
5375 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
5376 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
5377 eh->dyn_relocs = NULL;
5379 /* Also discard relocs on undefined weak syms with non-default
5381 if (eh->dyn_relocs != NULL
5382 && h->root.type == bfd_link_hash_undefweak)
5384 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5385 eh->dyn_relocs = NULL;
5387 /* Make sure undefined weak symbols are output as a dynamic
5389 else if (h->dynindx == -1
5393 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5398 else if (ELIMINATE_COPY_RELOCS)
5400 /* For the non-shared case, discard space for relocs against
5401 symbols which turn out to need copy relocs or are not
5407 /* Make sure this symbol is output as a dynamic symbol.
5408 Undefined weak syms won't yet be marked as dynamic. */
5409 if (h->dynindx == -1
5410 && !h->forced_local)
5412 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5416 /* If that succeeded, we know we'll be keeping all the
5418 if (h->dynindx != -1)
5422 eh->dyn_relocs = NULL;
5427 /* Finally, allocate space. */
5428 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5430 asection *sreloc = elf_section_data (p->sec)->sreloc;
5431 if (!htab->elf.dynamic_sections_created)
5432 sreloc = htab->reliplt;
5433 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5439 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
5440 read-only sections. */
5443 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
5445 if (h->root.type == bfd_link_hash_indirect)
5448 if (h->root.type == bfd_link_hash_warning)
5449 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5451 if (readonly_dynrelocs (h))
5453 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
5455 /* Not an error, just cut short the traversal. */
5461 /* Set the sizes of the dynamic sections. */
5464 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5465 struct bfd_link_info *info)
5467 struct ppc_elf_link_hash_table *htab;
5473 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
5476 htab = ppc_elf_hash_table (info);
5477 BFD_ASSERT (htab->elf.dynobj != NULL);
5479 if (elf_hash_table (info)->dynamic_sections_created)
5481 /* Set the contents of the .interp section to the interpreter. */
5482 if (info->executable)
5484 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
5485 BFD_ASSERT (s != NULL);
5486 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5487 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5491 if (htab->plt_type == PLT_OLD)
5492 htab->got_header_size = 16;
5493 else if (htab->plt_type == PLT_NEW)
5494 htab->got_header_size = 12;
5496 /* Set up .got offsets for local syms, and space for local dynamic
5498 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5500 bfd_signed_vma *local_got;
5501 bfd_signed_vma *end_local_got;
5502 struct plt_entry **local_plt;
5503 struct plt_entry **end_local_plt;
5505 bfd_size_type locsymcount;
5506 Elf_Internal_Shdr *symtab_hdr;
5508 if (!is_ppc_elf (ibfd))
5511 for (s = ibfd->sections; s != NULL; s = s->next)
5513 struct ppc_elf_dyn_relocs *p;
5515 for (p = ((struct ppc_elf_dyn_relocs *)
5516 elf_section_data (s)->local_dynrel);
5520 if (!bfd_is_abs_section (p->sec)
5521 && bfd_is_abs_section (p->sec->output_section))
5523 /* Input section has been discarded, either because
5524 it is a copy of a linkonce section or due to
5525 linker script /DISCARD/, so we'll be discarding
5528 else if (htab->is_vxworks
5529 && strcmp (p->sec->output_section->name,
5532 /* Relocations in vxworks .tls_vars sections are
5533 handled specially by the loader. */
5535 else if (p->count != 0)
5537 asection *sreloc = elf_section_data (p->sec)->sreloc;
5538 if (!htab->elf.dynamic_sections_created)
5539 sreloc = htab->reliplt;
5540 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5541 if ((p->sec->output_section->flags
5542 & (SEC_READONLY | SEC_ALLOC))
5543 == (SEC_READONLY | SEC_ALLOC))
5544 info->flags |= DF_TEXTREL;
5549 local_got = elf_local_got_refcounts (ibfd);
5553 symtab_hdr = &elf_symtab_hdr (ibfd);
5554 locsymcount = symtab_hdr->sh_info;
5555 end_local_got = local_got + locsymcount;
5556 local_plt = (struct plt_entry **) end_local_got;
5557 end_local_plt = local_plt + locsymcount;
5558 lgot_masks = (char *) end_local_plt;
5559 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
5562 unsigned int need = 0;
5563 if ((*lgot_masks & TLS_TLS) != 0)
5565 if ((*lgot_masks & TLS_GD) != 0)
5567 if ((*lgot_masks & TLS_LD) != 0)
5568 htab->tlsld_got.refcount += 1;
5569 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
5571 if ((*lgot_masks & TLS_DTPREL) != 0)
5577 *local_got = (bfd_vma) -1;
5580 *local_got = allocate_got (htab, need);
5582 htab->relgot->size += (need
5583 * (sizeof (Elf32_External_Rela) / 4));
5587 *local_got = (bfd_vma) -1;
5589 if (htab->is_vxworks)
5592 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
5593 for (; local_plt < end_local_plt; ++local_plt)
5595 struct plt_entry *ent;
5596 bfd_boolean doneone = FALSE;
5597 bfd_vma plt_offset = 0, glink_offset = 0;
5599 for (ent = *local_plt; ent != NULL; ent = ent->next)
5600 if (ent->plt.refcount > 0)
5602 asection *s = htab->iplt;
5606 plt_offset = s->size;
5609 ent->plt.offset = plt_offset;
5612 if (!doneone || info->shared)
5614 glink_offset = s->size;
5615 s->size += GLINK_ENTRY_SIZE;
5617 ent->glink_offset = glink_offset;
5621 htab->reliplt->size += sizeof (Elf32_External_Rela);
5626 ent->plt.offset = (bfd_vma) -1;
5630 /* Allocate space for global sym dynamic relocs. */
5631 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
5633 if (htab->tlsld_got.refcount > 0)
5635 htab->tlsld_got.offset = allocate_got (htab, 8);
5637 htab->relgot->size += sizeof (Elf32_External_Rela);
5640 htab->tlsld_got.offset = (bfd_vma) -1;
5642 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
5644 unsigned int g_o_t = 32768;
5646 /* If we haven't allocated the header, do so now. When we get here,
5647 for old plt/got the got size will be 0 to 32764 (not allocated),
5648 or 32780 to 65536 (header allocated). For new plt/got, the
5649 corresponding ranges are 0 to 32768 and 32780 to 65536. */
5650 if (htab->got->size <= 32768)
5652 g_o_t = htab->got->size;
5653 if (htab->plt_type == PLT_OLD)
5655 htab->got->size += htab->got_header_size;
5658 htab->elf.hgot->root.u.def.value = g_o_t;
5662 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
5664 && !(sda->root.type == bfd_link_hash_defined
5665 || sda->root.type == bfd_link_hash_defweak))
5667 sda->root.type = bfd_link_hash_defined;
5668 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
5669 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
5673 if (htab->glink != NULL
5674 && htab->glink->size != 0
5675 && htab->elf.dynamic_sections_created)
5677 htab->glink_pltresolve = htab->glink->size;
5678 /* Space for the branch table. */
5679 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
5680 /* Pad out to align the start of PLTresolve. */
5681 htab->glink->size += -htab->glink->size & 15;
5682 htab->glink->size += GLINK_PLTRESOLVE;
5684 if (htab->emit_stub_syms)
5686 struct elf_link_hash_entry *sh;
5687 sh = elf_link_hash_lookup (&htab->elf, "__glink",
5688 TRUE, FALSE, FALSE);
5691 if (sh->root.type == bfd_link_hash_new)
5693 sh->root.type = bfd_link_hash_defined;
5694 sh->root.u.def.section = htab->glink;
5695 sh->root.u.def.value = htab->glink_pltresolve;
5696 sh->ref_regular = 1;
5697 sh->def_regular = 1;
5698 sh->ref_regular_nonweak = 1;
5699 sh->forced_local = 1;
5702 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
5703 TRUE, FALSE, FALSE);
5706 if (sh->root.type == bfd_link_hash_new)
5708 sh->root.type = bfd_link_hash_defined;
5709 sh->root.u.def.section = htab->glink;
5710 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
5711 sh->ref_regular = 1;
5712 sh->def_regular = 1;
5713 sh->ref_regular_nonweak = 1;
5714 sh->forced_local = 1;
5720 /* We've now determined the sizes of the various dynamic sections.
5721 Allocate memory for them. */
5723 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
5725 bfd_boolean strip_section = TRUE;
5727 if ((s->flags & SEC_LINKER_CREATED) == 0)
5733 /* We'd like to strip these sections if they aren't needed, but if
5734 we've exported dynamic symbols from them we must leave them.
5735 It's too late to tell BFD to get rid of the symbols. */
5736 if (htab->elf.hplt != NULL)
5737 strip_section = FALSE;
5738 /* Strip this section if we don't need it; see the
5741 else if (s == htab->iplt
5743 || s == htab->sgotplt
5745 || s == htab->dynbss
5746 || s == htab->dynsbss
5747 || s == htab->sdata[0].section
5748 || s == htab->sdata[1].section)
5750 /* Strip these too. */
5752 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5756 /* Remember whether there are any relocation sections. */
5759 /* We use the reloc_count field as a counter if we need
5760 to copy relocs into the output file. */
5766 /* It's not one of our sections, so don't allocate space. */
5770 if (s->size == 0 && strip_section)
5772 /* If we don't need this section, strip it from the
5773 output file. This is mostly to handle .rela.bss and
5774 .rela.plt. We must create both sections in
5775 create_dynamic_sections, because they must be created
5776 before the linker maps input sections to output
5777 sections. The linker does that before
5778 adjust_dynamic_symbol is called, and it is that
5779 function which decides whether anything needs to go
5780 into these sections. */
5781 s->flags |= SEC_EXCLUDE;
5785 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5788 /* Allocate memory for the section contents. */
5789 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
5790 if (s->contents == NULL)
5794 if (htab->elf.dynamic_sections_created)
5796 /* Add some entries to the .dynamic section. We fill in the
5797 values later, in ppc_elf_finish_dynamic_sections, but we
5798 must add the entries now so that we get the correct size for
5799 the .dynamic section. The DT_DEBUG entry is filled in by the
5800 dynamic linker and used by the debugger. */
5801 #define add_dynamic_entry(TAG, VAL) \
5802 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5804 if (info->executable)
5806 if (!add_dynamic_entry (DT_DEBUG, 0))
5810 if (htab->plt != NULL && htab->plt->size != 0)
5812 if (!add_dynamic_entry (DT_PLTGOT, 0)
5813 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5814 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5815 || !add_dynamic_entry (DT_JMPREL, 0))
5819 if (htab->glink != NULL && htab->glink->size != 0)
5821 if (!add_dynamic_entry (DT_PPC_GOT, 0))
5827 if (!add_dynamic_entry (DT_RELA, 0)
5828 || !add_dynamic_entry (DT_RELASZ, 0)
5829 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
5833 /* If any dynamic relocs apply to a read-only section, then we
5834 need a DT_TEXTREL entry. */
5835 if ((info->flags & DF_TEXTREL) == 0)
5836 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
5839 if ((info->flags & DF_TEXTREL) != 0)
5841 if (!add_dynamic_entry (DT_TEXTREL, 0))
5844 if (htab->is_vxworks
5845 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
5848 #undef add_dynamic_entry
5853 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5856 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
5858 if (h->plt.plist != NULL
5860 && (!h->pointer_equality_needed
5861 || !h->ref_regular_nonweak))
5864 return _bfd_elf_hash_symbol (h);
5867 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
5869 /* Relaxation trampolines. r12 is available for clobbering (r11, is
5870 used for some functions that are allowed to break the ABI). */
5871 static const int shared_stub_entry[] =
5873 0x7c0802a6, /* mflr 0 */
5874 0x429f0005, /* bcl 20, 31, .Lxxx */
5875 0x7d8802a6, /* mflr 12 */
5876 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
5877 0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
5878 0x7c0803a6, /* mtlr 0 */
5879 0x7d8903a6, /* mtctr 12 */
5880 0x4e800420, /* bctr */
5883 static const int stub_entry[] =
5885 0x3d800000, /* lis 12,xxx@ha */
5886 0x398c0000, /* addi 12,12,xxx@l */
5887 0x7d8903a6, /* mtctr 12 */
5888 0x4e800420, /* bctr */
5892 ppc_elf_relax_section (bfd *abfd,
5894 struct bfd_link_info *link_info,
5899 struct one_fixup *next;
5901 /* Final link, can use the symbol offset. For a
5902 relocatable link we use the symbol's index. */
5907 Elf_Internal_Shdr *symtab_hdr;
5908 bfd_byte *contents = NULL;
5909 Elf_Internal_Sym *isymbuf = NULL;
5910 Elf_Internal_Rela *internal_relocs = NULL;
5911 Elf_Internal_Rela *irel, *irelend;
5912 struct one_fixup *fixups = NULL;
5913 unsigned changes = 0;
5914 struct ppc_elf_link_hash_table *htab;
5915 bfd_size_type trampoff;
5920 /* Nothing to do if there are no relocations, and no need to do
5921 anything with non-alloc or non-code sections. */
5922 if ((isec->flags & SEC_ALLOC) == 0
5923 || (isec->flags & SEC_CODE) == 0
5924 || (isec->flags & SEC_RELOC) == 0
5925 || isec->reloc_count == 0)
5928 /* We cannot represent the required PIC relocs in the output, so don't
5929 do anything. The linker doesn't support mixing -shared and -r
5931 if (link_info->relocatable && link_info->shared)
5934 trampoff = (isec->size + 3) & (bfd_vma) -4;
5935 /* Space for a branch around any trampolines. */
5938 symtab_hdr = &elf_symtab_hdr (abfd);
5940 /* Get a copy of the native relocations. */
5941 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
5942 link_info->keep_memory);
5943 if (internal_relocs == NULL)
5946 htab = ppc_elf_hash_table (link_info);
5947 got2 = bfd_get_section_by_name (abfd, ".got2");
5949 irelend = internal_relocs + isec->reloc_count;
5950 for (irel = internal_relocs; irel < irelend; irel++)
5952 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
5953 bfd_vma reladdr, toff, roff;
5955 struct one_fixup *f;
5956 size_t insn_offset = 0;
5957 bfd_vma max_branch_offset, val;
5960 struct elf_link_hash_entry *h;
5961 struct plt_entry **plist;
5962 unsigned char sym_type;
5967 case R_PPC_LOCAL24PC:
5968 case R_PPC_PLTREL24:
5969 max_branch_offset = 1 << 25;
5973 case R_PPC_REL14_BRTAKEN:
5974 case R_PPC_REL14_BRNTAKEN:
5975 max_branch_offset = 1 << 15;
5982 /* Get the value of the symbol referred to by the reloc. */
5984 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5986 /* A local symbol. */
5987 Elf_Internal_Sym *isym;
5989 /* Read this BFD's local symbols. */
5990 if (isymbuf == NULL)
5992 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5993 if (isymbuf == NULL)
5994 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5995 symtab_hdr->sh_info, 0,
6000 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6001 if (isym->st_shndx == SHN_UNDEF)
6002 tsec = bfd_und_section_ptr;
6003 else if (isym->st_shndx == SHN_ABS)
6004 tsec = bfd_abs_section_ptr;
6005 else if (isym->st_shndx == SHN_COMMON)
6006 tsec = bfd_com_section_ptr;
6008 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6010 toff = isym->st_value;
6011 sym_type = ELF_ST_TYPE (isym->st_info);
6015 /* Global symbol handling. */
6018 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6019 h = elf_sym_hashes (abfd)[indx];
6021 while (h->root.type == bfd_link_hash_indirect
6022 || h->root.type == bfd_link_hash_warning)
6023 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6025 if (h->root.type == bfd_link_hash_defined
6026 || h->root.type == bfd_link_hash_defweak)
6028 tsec = h->root.u.def.section;
6029 toff = h->root.u.def.value;
6031 else if (h->root.type == bfd_link_hash_undefined
6032 || h->root.type == bfd_link_hash_undefweak)
6034 tsec = bfd_und_section_ptr;
6035 toff = link_info->relocatable ? indx : 0;
6043 /* The condition here under which we call find_plt_ent must
6044 match that in relocate_section. If we call find_plt_ent here
6045 but not in relocate_section, or vice versa, then the branch
6046 destination used here may be incorrect. */
6050 /* We know is_branch_reloc (r_type) is true. */
6051 if (h->type == STT_GNU_IFUNC
6052 || r_type == R_PPC_PLTREL24)
6053 plist = &h->plt.plist;
6055 else if (sym_type == STT_GNU_IFUNC
6056 && elf_local_got_offsets (abfd) != NULL)
6058 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6059 struct plt_entry **local_plt = (struct plt_entry **)
6060 (local_got_offsets + symtab_hdr->sh_info);
6061 plist = local_plt + ELF32_R_SYM (irel->r_info);
6066 struct plt_entry *ent;
6068 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6069 addend = irel->r_addend;
6070 ent = find_plt_ent (plist, got2, addend);
6073 if (htab->plt_type == PLT_NEW
6075 || !htab->elf.dynamic_sections_created
6076 || h->dynindx == -1)
6079 toff = ent->glink_offset;
6084 toff = ent->plt.offset;
6089 /* If the branch and target are in the same section, you have
6090 no hope of adding stubs. We'll error out later should the
6095 /* There probably isn't any reason to handle symbols in
6096 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6097 attribute for a code section, and we are only looking at
6098 branches. However, implement it correctly here as a
6099 reference for other target relax_section functions. */
6100 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
6102 /* At this stage in linking, no SEC_MERGE symbol has been
6103 adjusted, so all references to such symbols need to be
6104 passed through _bfd_merged_section_offset. (Later, in
6105 relocate_section, all SEC_MERGE symbols *except* for
6106 section symbols have been adjusted.)
6108 gas may reduce relocations against symbols in SEC_MERGE
6109 sections to a relocation against the section symbol when
6110 the original addend was zero. When the reloc is against
6111 a section symbol we should include the addend in the
6112 offset passed to _bfd_merged_section_offset, since the
6113 location of interest is the original symbol. On the
6114 other hand, an access to "sym+addend" where "sym" is not
6115 a section symbol should not include the addend; Such an
6116 access is presumed to be an offset from "sym"; The
6117 location of interest is just "sym". */
6118 if (sym_type == STT_SECTION)
6119 toff += irel->r_addend;
6121 toff = _bfd_merged_section_offset (abfd, &tsec,
6122 elf_section_data (tsec)->sec_info,
6125 if (sym_type != STT_SECTION)
6126 toff += irel->r_addend;
6128 /* PLTREL24 addends are special. */
6129 else if (r_type != R_PPC_PLTREL24)
6130 toff += irel->r_addend;
6132 /* Attempted -shared link of non-pic code loses. */
6133 if (tsec->output_section == NULL)
6136 roff = irel->r_offset;
6137 reladdr = isec->output_section->vma + isec->output_offset + roff;
6139 /* If the branch is in range, no need to do anything. */
6140 if (tsec != bfd_und_section_ptr
6141 && (!link_info->relocatable
6142 /* A relocatable link may have sections moved during
6143 final link, so do not presume they remain in range. */
6144 || tsec->output_section == isec->output_section))
6146 bfd_vma symaddr, reladdr;
6148 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
6149 reladdr = isec->output_section->vma + isec->output_offset + roff;
6150 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
6154 /* Look for an existing fixup to this address. */
6155 for (f = fixups; f ; f = f->next)
6156 if (f->tsec == tsec && f->toff == toff)
6162 unsigned long stub_rtype;
6164 val = trampoff - roff;
6165 if (val >= max_branch_offset)
6166 /* Oh dear, we can't reach a trampoline. Don't try to add
6167 one. We'll report an error later. */
6170 if (link_info->shared)
6172 size = 4 * ARRAY_SIZE (shared_stub_entry);
6174 stub_rtype = R_PPC_RELAX32PC;
6178 size = 4 * ARRAY_SIZE (stub_entry);
6180 stub_rtype = R_PPC_RELAX32;
6183 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
6184 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
6186 if (tsec == htab->plt
6187 || tsec == htab->glink)
6188 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
6190 /* Hijack the old relocation. Since we need two
6191 relocations for this use a "composite" reloc. */
6192 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
6194 irel->r_offset = trampoff + insn_offset;
6195 if (r_type == R_PPC_PLTREL24)
6198 /* Record the fixup so we don't do it again this section. */
6199 f = bfd_malloc (sizeof (*f));
6203 f->trampoff = trampoff;
6211 val = f->trampoff - roff;
6212 if (val >= max_branch_offset)
6215 /* Nop out the reloc, since we're finalizing things here. */
6216 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6219 /* Get the section contents. */
6220 if (contents == NULL)
6222 /* Get cached copy if it exists. */
6223 if (elf_section_data (isec)->this_hdr.contents != NULL)
6224 contents = elf_section_data (isec)->this_hdr.contents;
6227 /* Go get them off disk. */
6228 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
6233 /* Fix up the existing branch to hit the trampoline. */
6234 hit_addr = contents + roff;
6238 case R_PPC_LOCAL24PC:
6239 case R_PPC_PLTREL24:
6240 t0 = bfd_get_32 (abfd, hit_addr);
6242 t0 |= val & 0x3fffffc;
6243 bfd_put_32 (abfd, t0, hit_addr);
6247 case R_PPC_REL14_BRTAKEN:
6248 case R_PPC_REL14_BRNTAKEN:
6249 t0 = bfd_get_32 (abfd, hit_addr);
6252 bfd_put_32 (abfd, t0, hit_addr);
6257 /* Write out the trampolines. */
6267 struct one_fixup *f = fixups;
6268 fixups = fixups->next;
6273 contents = bfd_realloc_or_free (contents, trampoff);
6274 if (contents == NULL)
6277 isec->size = (isec->size + 3) & (bfd_vma) -4;
6278 /* Branch around the trampolines. */
6279 val = B + trampoff - isec->size;
6280 dest = contents + isec->size;
6281 isec->size = trampoff;
6282 bfd_put_32 (abfd, val, dest);
6285 if (link_info->shared)
6287 stub = shared_stub_entry;
6288 size = ARRAY_SIZE (shared_stub_entry);
6293 size = ARRAY_SIZE (stub_entry);
6297 while (dest < contents + trampoff)
6299 bfd_put_32 (abfd, stub[i], dest);
6305 BFD_ASSERT (i == 0);
6309 && symtab_hdr->contents != (unsigned char *) isymbuf)
6311 if (! link_info->keep_memory)
6315 /* Cache the symbols for elf_link_input_bfd. */
6316 symtab_hdr->contents = (unsigned char *) isymbuf;
6320 if (contents != NULL
6321 && elf_section_data (isec)->this_hdr.contents != contents)
6323 if (!changes && !link_info->keep_memory)
6327 /* Cache the section contents for elf_link_input_bfd. */
6328 elf_section_data (isec)->this_hdr.contents = contents;
6334 /* Append sufficient NOP relocs so we can write out relocation
6335 information for the trampolines. */
6336 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
6337 * sizeof (*new_relocs));
6342 memcpy (new_relocs, internal_relocs,
6343 isec->reloc_count * sizeof (*new_relocs));
6344 for (ix = changes; ix--;)
6346 irel = new_relocs + ix + isec->reloc_count;
6348 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
6350 if (internal_relocs != elf_section_data (isec)->relocs)
6351 free (internal_relocs);
6352 elf_section_data (isec)->relocs = new_relocs;
6353 isec->reloc_count += changes;
6354 elf_section_data (isec)->rel_hdr.sh_size
6355 += changes * elf_section_data (isec)->rel_hdr.sh_entsize;
6357 else if (elf_section_data (isec)->relocs != internal_relocs)
6358 free (internal_relocs);
6360 *again = changes != 0;
6361 if (!*again && link_info->relocatable)
6363 /* Convert the internal relax relocs to external form. */
6364 for (irel = internal_relocs; irel < irelend; irel++)
6365 if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX32)
6367 unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
6369 /* Rewrite the reloc and convert one of the trailing nop
6370 relocs to describe this relocation. */
6371 BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
6372 /* The relocs are at the bottom 2 bytes */
6373 irel[0].r_offset += 2;
6374 memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
6375 irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
6376 irel[1].r_offset += 4;
6377 irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
6385 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
6387 if (contents != NULL
6388 && elf_section_data (isec)->this_hdr.contents != contents)
6390 if (internal_relocs != NULL
6391 && elf_section_data (isec)->relocs != internal_relocs)
6392 free (internal_relocs);
6396 /* What to do when ld finds relocations against symbols defined in
6397 discarded sections. */
6400 ppc_elf_action_discarded (asection *sec)
6402 if (strcmp (".fixup", sec->name) == 0)
6405 if (strcmp (".got2", sec->name) == 0)
6408 return _bfd_elf_default_action_discarded (sec);
6411 /* Fill in the address for a pointer generated in a linker section. */
6414 elf_finish_pointer_linker_section (bfd *input_bfd,
6415 elf_linker_section_t *lsect,
6416 struct elf_link_hash_entry *h,
6418 const Elf_Internal_Rela *rel)
6420 elf_linker_section_pointers_t *linker_section_ptr;
6422 BFD_ASSERT (lsect != NULL);
6426 /* Handle global symbol. */
6427 struct ppc_elf_link_hash_entry *eh;
6429 eh = (struct ppc_elf_link_hash_entry *) h;
6430 BFD_ASSERT (eh->elf.def_regular);
6431 linker_section_ptr = eh->linker_section_pointer;
6435 /* Handle local symbol. */
6436 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
6438 BFD_ASSERT (is_ppc_elf (input_bfd));
6439 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
6440 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
6443 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
6446 BFD_ASSERT (linker_section_ptr != NULL);
6448 /* Offset will always be a multiple of four, so use the bottom bit
6449 as a "written" flag. */
6450 if ((linker_section_ptr->offset & 1) == 0)
6452 bfd_put_32 (lsect->section->owner,
6453 relocation + linker_section_ptr->addend,
6454 lsect->section->contents + linker_section_ptr->offset);
6455 linker_section_ptr->offset += 1;
6458 relocation = (lsect->section->output_section->vma
6459 + lsect->section->output_offset
6460 + linker_section_ptr->offset - 1
6461 - SYM_VAL (lsect->sym));
6465 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
6466 lsect->name, (long) relocation, (long) relocation);
6472 #define PPC_LO(v) ((v) & 0xffff)
6473 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6474 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6477 write_glink_stub (struct plt_entry *ent, asection *plt_sec,
6478 struct bfd_link_info *info)
6480 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6481 bfd *output_bfd = info->output_bfd;
6485 plt = ((ent->plt.offset & ~1)
6486 + plt_sec->output_section->vma
6487 + plt_sec->output_offset);
6488 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6494 if (ent->addend >= 32768)
6496 + ent->sec->output_section->vma
6497 + ent->sec->output_offset);
6498 else if (htab->elf.hgot != NULL)
6499 got = SYM_VAL (htab->elf.hgot);
6503 if (plt + 0x8000 < 0x10000)
6505 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6507 bfd_put_32 (output_bfd, MTCTR_11, p);
6509 bfd_put_32 (output_bfd, BCTR, p);
6511 bfd_put_32 (output_bfd, NOP, p);
6516 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6518 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6520 bfd_put_32 (output_bfd, MTCTR_11, p);
6522 bfd_put_32 (output_bfd, BCTR, p);
6528 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6530 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6532 bfd_put_32 (output_bfd, MTCTR_11, p);
6534 bfd_put_32 (output_bfd, BCTR, p);
6539 /* Return true if symbol is defined statically. */
6542 is_static_defined (struct elf_link_hash_entry *h)
6544 return ((h->root.type == bfd_link_hash_defined
6545 || h->root.type == bfd_link_hash_defweak)
6546 && h->root.u.def.section != NULL
6547 && h->root.u.def.section->output_section != NULL);
6550 /* The RELOCATE_SECTION function is called by the ELF backend linker
6551 to handle the relocations for a section.
6553 The relocs are always passed as Rela structures; if the section
6554 actually uses Rel structures, the r_addend field will always be
6557 This function is responsible for adjust the section contents as
6558 necessary, and (if using Rela relocs and generating a
6559 relocatable output file) adjusting the reloc addend as
6562 This function does not have to worry about setting the reloc
6563 address or the reloc symbol index.
6565 LOCAL_SYMS is a pointer to the swapped in local symbols.
6567 LOCAL_SECTIONS is an array giving the section in the input file
6568 corresponding to the st_shndx field of each local symbol.
6570 The global hash table entry for the global symbols can be found
6571 via elf_sym_hashes (input_bfd).
6573 When generating relocatable output, this function must handle
6574 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6575 going to be the section symbol corresponding to the output
6576 section, which means that the addend must be adjusted
6580 ppc_elf_relocate_section (bfd *output_bfd,
6581 struct bfd_link_info *info,
6583 asection *input_section,
6585 Elf_Internal_Rela *relocs,
6586 Elf_Internal_Sym *local_syms,
6587 asection **local_sections)
6589 Elf_Internal_Shdr *symtab_hdr;
6590 struct elf_link_hash_entry **sym_hashes;
6591 struct ppc_elf_link_hash_table *htab;
6592 Elf_Internal_Rela *rel;
6593 Elf_Internal_Rela *relend;
6594 Elf_Internal_Rela outrel;
6596 asection *got2, *sreloc = NULL;
6597 bfd_vma *local_got_offsets;
6598 bfd_boolean ret = TRUE;
6599 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
6600 bfd_boolean is_vxworks_tls;
6603 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
6604 "%ld relocations%s",
6605 input_bfd, input_section,
6606 (long) input_section->reloc_count,
6607 (info->relocatable) ? " (relocatable)" : "");
6610 got2 = bfd_get_section_by_name (input_bfd, ".got2");
6612 /* Initialize howto table if not already done. */
6613 if (!ppc_elf_howto_table[R_PPC_ADDR32])
6614 ppc_elf_howto_init ();
6616 htab = ppc_elf_hash_table (info);
6617 local_got_offsets = elf_local_got_offsets (input_bfd);
6618 symtab_hdr = &elf_symtab_hdr (input_bfd);
6619 sym_hashes = elf_sym_hashes (input_bfd);
6620 /* We have to handle relocations in vxworks .tls_vars sections
6621 specially, because the dynamic loader is 'weird'. */
6622 is_vxworks_tls = (htab->is_vxworks && info->shared
6623 && !strcmp (input_section->output_section->name,
6626 relend = relocs + input_section->reloc_count;
6627 for (; rel < relend; rel++)
6629 enum elf_ppc_reloc_type r_type;
6631 bfd_reloc_status_type r;
6632 Elf_Internal_Sym *sym;
6634 struct elf_link_hash_entry *h;
6635 const char *sym_name;
6636 reloc_howto_type *howto;
6637 unsigned long r_symndx;
6639 bfd_vma branch_bit, insn, from;
6640 bfd_boolean unresolved_reloc;
6642 unsigned int tls_type, tls_mask, tls_gd;
6643 struct plt_entry **ifunc;
6645 r_type = ELF32_R_TYPE (rel->r_info);
6649 unresolved_reloc = FALSE;
6651 r_symndx = ELF32_R_SYM (rel->r_info);
6653 if (r_symndx < symtab_hdr->sh_info)
6655 sym = local_syms + r_symndx;
6656 sec = local_sections[r_symndx];
6657 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
6659 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6663 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6664 r_symndx, symtab_hdr, sym_hashes,
6666 unresolved_reloc, warned);
6668 sym_name = h->root.root.string;
6671 if (sec != NULL && elf_discarded_section (sec))
6673 /* For relocs against symbols from removed linkonce sections,
6674 or sections discarded by a linker script, we just want the
6675 section contents zeroed. Avoid any special processing. */
6677 if (r_type < R_PPC_max)
6678 howto = ppc_elf_howto_table[r_type];
6679 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6685 if (info->relocatable)
6688 && r_type == R_PPC_PLTREL24
6689 && rel->r_addend >= 32768)
6691 /* R_PPC_PLTREL24 is rather special. If non-zero, the
6692 addend specifies the GOT pointer offset within .got2. */
6693 rel->r_addend += got2->output_offset;
6698 /* TLS optimizations. Replace instruction sequences and relocs
6699 based on information we collected in tls_optimize. We edit
6700 RELOCS so that --emit-relocs will output something sensible
6701 for the final instruction stream. */
6705 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
6706 else if (local_got_offsets != NULL)
6708 struct plt_entry **local_plt;
6711 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
6712 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
6713 tls_mask = lgot_masks[r_symndx];
6716 /* Ensure reloc mapping code below stays sane. */
6717 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
6718 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
6719 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
6720 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
6721 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
6722 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
6723 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
6724 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
6731 case R_PPC_GOT_TPREL16:
6732 case R_PPC_GOT_TPREL16_LO:
6733 if ((tls_mask & TLS_TLS) != 0
6734 && (tls_mask & TLS_TPREL) == 0)
6737 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
6739 insn |= 0x3c020000; /* addis 0,2,0 */
6740 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
6741 r_type = R_PPC_TPREL16_HA;
6742 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6747 if ((tls_mask & TLS_TLS) != 0
6748 && (tls_mask & TLS_TPREL) == 0)
6751 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6752 if ((insn & ((31 << 26) | (31 << 11)))
6753 == ((31 << 26) | (2 << 11)))
6754 rtra = insn & ((1 << 26) - (1 << 16));
6755 else if ((insn & ((31 << 26) | (31 << 16)))
6756 == ((31 << 26) | (2 << 16)))
6757 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
6760 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
6763 else if ((insn & (31 << 1)) == 23 << 1
6764 && ((insn & (31 << 6)) < 14 << 6
6765 || ((insn & (31 << 6)) >= 16 << 6
6766 && (insn & (31 << 6)) < 24 << 6)))
6767 /* load and store indexed -> dform. */
6768 insn = (32 | ((insn >> 6) & 31)) << 26;
6769 else if ((insn & (31 << 1)) == 21 << 1
6770 && (insn & (0x1a << 6)) == 0)
6771 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
6772 insn = (((58 | ((insn >> 6) & 4)) << 26)
6773 | ((insn >> 6) & 1));
6774 else if ((insn & (31 << 1)) == 21 << 1
6775 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
6777 insn = (58 << 26) | 2;
6781 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6782 r_type = R_PPC_TPREL16_LO;
6783 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6785 /* Was PPC_TLS which sits on insn boundary, now
6786 PPC_TPREL16_LO which is at low-order half-word. */
6787 rel->r_offset += d_offset;
6791 case R_PPC_GOT_TLSGD16_HI:
6792 case R_PPC_GOT_TLSGD16_HA:
6793 tls_gd = TLS_TPRELGD;
6794 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6798 case R_PPC_GOT_TLSLD16_HI:
6799 case R_PPC_GOT_TLSLD16_HA:
6800 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6803 if ((tls_mask & tls_gd) != 0)
6804 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6805 + R_PPC_GOT_TPREL16);
6808 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
6809 rel->r_offset -= d_offset;
6810 r_type = R_PPC_NONE;
6812 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6816 case R_PPC_GOT_TLSGD16:
6817 case R_PPC_GOT_TLSGD16_LO:
6818 tls_gd = TLS_TPRELGD;
6819 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6823 case R_PPC_GOT_TLSLD16:
6824 case R_PPC_GOT_TLSLD16_LO:
6825 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6827 unsigned int insn1, insn2;
6831 offset = (bfd_vma) -1;
6832 /* If not using the newer R_PPC_TLSGD/LD to mark
6833 __tls_get_addr calls, we must trust that the call
6834 stays with its arg setup insns, ie. that the next
6835 reloc is the __tls_get_addr call associated with
6836 the current reloc. Edit both insns. */
6837 if (input_section->has_tls_get_addr_call
6839 && branch_reloc_hash_match (input_bfd, rel + 1,
6840 htab->tls_get_addr))
6841 offset = rel[1].r_offset;
6842 if ((tls_mask & tls_gd) != 0)
6845 insn1 = bfd_get_32 (output_bfd,
6846 contents + rel->r_offset - d_offset);
6847 insn1 &= (1 << 26) - 1;
6848 insn1 |= 32 << 26; /* lwz */
6849 if (offset != (bfd_vma) -1)
6852 = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6854 insn2 = 0x7c631214; /* add 3,3,2 */
6855 bfd_put_32 (output_bfd, insn2, contents + offset);
6857 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
6858 + R_PPC_GOT_TPREL16);
6859 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6864 insn1 = 0x3c620000; /* addis 3,2,0 */
6867 /* Was an LD reloc. */
6869 r_symndx < symtab_hdr->sh_info;
6871 if (local_sections[r_symndx] == sec)
6873 if (r_symndx >= symtab_hdr->sh_info)
6875 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6877 rel->r_addend -= (local_syms[r_symndx].st_value
6878 + sec->output_offset
6879 + sec->output_section->vma);
6881 r_type = R_PPC_TPREL16_HA;
6882 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6883 if (offset != (bfd_vma) -1)
6885 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6886 rel[1].r_offset = offset + d_offset;
6887 rel[1].r_addend = rel->r_addend;
6888 insn2 = 0x38630000; /* addi 3,3,0 */
6889 bfd_put_32 (output_bfd, insn2, contents + offset);
6892 bfd_put_32 (output_bfd, insn1,
6893 contents + rel->r_offset - d_offset);
6896 /* We changed the symbol on an LD reloc. Start over
6897 in order to get h, sym, sec etc. right. */
6905 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
6908 bfd_vma offset = rel->r_offset;
6910 if ((tls_mask & TLS_TPRELGD) != 0)
6913 r_type = R_PPC_NONE;
6914 insn2 = 0x7c631214; /* add 3,3,2 */
6919 r_type = R_PPC_TPREL16_LO;
6920 rel->r_offset += d_offset;
6921 insn2 = 0x38630000; /* addi 3,3,0 */
6923 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
6924 bfd_put_32 (output_bfd, insn2, contents + offset);
6925 /* Zap the reloc on the _tls_get_addr call too. */
6926 BFD_ASSERT (offset == rel[1].r_offset);
6927 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6933 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
6938 r_symndx < symtab_hdr->sh_info;
6940 if (local_sections[r_symndx] == sec)
6942 if (r_symndx >= symtab_hdr->sh_info)
6944 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
6946 rel->r_addend -= (local_syms[r_symndx].st_value
6947 + sec->output_offset
6948 + sec->output_section->vma);
6950 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
6951 rel->r_offset += d_offset;
6952 insn2 = 0x38630000; /* addi 3,3,0 */
6953 bfd_put_32 (output_bfd, insn2,
6954 contents + rel->r_offset - d_offset);
6955 /* Zap the reloc on the _tls_get_addr call too. */
6956 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
6957 rel[1].r_info = ELF32_R_INFO (ELF32_R_SYM (rel[1].r_info),
6965 /* Handle other relocations that tweak non-addend part of insn. */
6972 /* Branch taken prediction relocations. */
6973 case R_PPC_ADDR14_BRTAKEN:
6974 case R_PPC_REL14_BRTAKEN:
6975 branch_bit = BRANCH_PREDICT_BIT;
6978 /* Branch not taken prediction relocations. */
6979 case R_PPC_ADDR14_BRNTAKEN:
6980 case R_PPC_REL14_BRNTAKEN:
6981 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6982 insn &= ~BRANCH_PREDICT_BIT;
6985 from = (rel->r_offset
6986 + input_section->output_offset
6987 + input_section->output_section->vma);
6989 /* Invert 'y' bit if not the default. */
6990 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
6991 insn ^= BRANCH_PREDICT_BIT;
6993 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6998 if (!htab->is_vxworks)
7000 struct plt_entry *ent;
7004 if (h->type == STT_GNU_IFUNC)
7005 ifunc = &h->plt.plist;
7007 else if (local_got_offsets != NULL
7008 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7010 struct plt_entry **local_plt;
7012 local_plt = (struct plt_entry **) (local_got_offsets
7013 + symtab_hdr->sh_info);
7014 ifunc = local_plt + r_symndx;
7020 || is_branch_reloc (r_type)))
7023 if (r_type == R_PPC_PLTREL24 && info->shared)
7024 addend = rel->r_addend;
7025 ent = find_plt_ent (ifunc, got2, addend);
7029 if (h == NULL && (ent->plt.offset & 1) == 0)
7031 Elf_Internal_Rela rela;
7034 rela.r_offset = (htab->iplt->output_section->vma
7035 + htab->iplt->output_offset
7037 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7038 rela.r_addend = relocation;
7039 loc = htab->reliplt->contents;
7040 loc += (htab->reliplt->reloc_count++
7041 * sizeof (Elf32_External_Rela));
7042 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7044 ent->plt.offset |= 1;
7046 if (h == NULL && (ent->glink_offset & 1) == 0)
7048 write_glink_stub (ent, htab->iplt, info);
7049 ent->glink_offset |= 1;
7052 unresolved_reloc = FALSE;
7053 if (htab->plt_type == PLT_NEW
7054 || !htab->elf.dynamic_sections_created
7056 relocation = (htab->glink->output_section->vma
7057 + htab->glink->output_offset
7058 + (ent->glink_offset & ~1));
7060 relocation = (htab->plt->output_section->vma
7061 + htab->plt->output_offset
7066 addend = rel->r_addend;
7069 if (r_type < R_PPC_max)
7070 howto = ppc_elf_howto_table[r_type];
7074 (*_bfd_error_handler)
7075 (_("%B: unknown relocation type %d for symbol %s"),
7076 input_bfd, (int) r_type, sym_name);
7078 bfd_set_error (bfd_error_bad_value);
7086 case R_PPC_EMB_MRKREF:
7087 case R_PPC_GNU_VTINHERIT:
7088 case R_PPC_GNU_VTENTRY:
7091 /* GOT16 relocations. Like an ADDR16 using the symbol's
7092 address in the GOT as relocation value instead of the
7093 symbol's value itself. Also, create a GOT entry for the
7094 symbol and put the symbol value there. */
7095 case R_PPC_GOT_TLSGD16:
7096 case R_PPC_GOT_TLSGD16_LO:
7097 case R_PPC_GOT_TLSGD16_HI:
7098 case R_PPC_GOT_TLSGD16_HA:
7099 tls_type = TLS_TLS | TLS_GD;
7102 case R_PPC_GOT_TLSLD16:
7103 case R_PPC_GOT_TLSLD16_LO:
7104 case R_PPC_GOT_TLSLD16_HI:
7105 case R_PPC_GOT_TLSLD16_HA:
7106 tls_type = TLS_TLS | TLS_LD;
7109 case R_PPC_GOT_TPREL16:
7110 case R_PPC_GOT_TPREL16_LO:
7111 case R_PPC_GOT_TPREL16_HI:
7112 case R_PPC_GOT_TPREL16_HA:
7113 tls_type = TLS_TLS | TLS_TPREL;
7116 case R_PPC_GOT_DTPREL16:
7117 case R_PPC_GOT_DTPREL16_LO:
7118 case R_PPC_GOT_DTPREL16_HI:
7119 case R_PPC_GOT_DTPREL16_HA:
7120 tls_type = TLS_TLS | TLS_DTPREL;
7124 case R_PPC_GOT16_LO:
7125 case R_PPC_GOT16_HI:
7126 case R_PPC_GOT16_HA:
7130 /* Relocation is to the entry for this symbol in the global
7136 if (htab->got == NULL)
7140 if (tls_type == (TLS_TLS | TLS_LD)
7142 || !h->def_dynamic))
7143 offp = &htab->tlsld_got.offset;
7147 dyn = htab->elf.dynamic_sections_created;
7148 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7150 && SYMBOL_REFERENCES_LOCAL (info, h)))
7151 /* This is actually a static link, or it is a
7152 -Bsymbolic link and the symbol is defined
7153 locally, or the symbol was forced to be local
7154 because of a version file. */
7159 unresolved_reloc = FALSE;
7161 offp = &h->got.offset;
7165 if (local_got_offsets == NULL)
7167 offp = &local_got_offsets[r_symndx];
7170 /* The offset must always be a multiple of 4. We use the
7171 least significant bit to record whether we have already
7172 processed this entry. */
7178 unsigned int tls_m = (tls_mask
7179 & (TLS_LD | TLS_GD | TLS_DTPREL
7180 | TLS_TPREL | TLS_TPRELGD));
7182 if (offp == &htab->tlsld_got.offset)
7188 /* We might have multiple got entries for this sym.
7189 Initialize them all. */
7194 if ((tls_m & TLS_LD) != 0)
7196 tls_ty = TLS_TLS | TLS_LD;
7199 else if ((tls_m & TLS_GD) != 0)
7201 tls_ty = TLS_TLS | TLS_GD;
7204 else if ((tls_m & TLS_DTPREL) != 0)
7206 tls_ty = TLS_TLS | TLS_DTPREL;
7207 tls_m &= ~TLS_DTPREL;
7209 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
7211 tls_ty = TLS_TLS | TLS_TPREL;
7215 /* Generate relocs for the dynamic linker. */
7216 if ((info->shared || indx != 0)
7217 && (offp == &htab->tlsld_got.offset
7219 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7220 || h->root.type != bfd_link_hash_undefweak))
7222 asection *rsec = htab->relgot;
7224 outrel.r_offset = (htab->got->output_section->vma
7225 + htab->got->output_offset
7227 outrel.r_addend = 0;
7228 if (tls_ty & (TLS_LD | TLS_GD))
7230 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
7231 if (tls_ty == (TLS_TLS | TLS_GD))
7233 loc = rsec->contents;
7234 loc += (rsec->reloc_count++
7235 * sizeof (Elf32_External_Rela));
7236 bfd_elf32_swap_reloca_out (output_bfd,
7238 outrel.r_offset += 4;
7240 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7243 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
7244 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
7245 else if (tls_ty == (TLS_TLS | TLS_TPREL))
7246 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
7248 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
7249 else if (ifunc != NULL)
7250 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7252 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7253 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
7255 outrel.r_addend += relocation;
7256 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7257 outrel.r_addend -= htab->elf.tls_sec->vma;
7259 loc = rsec->contents;
7260 loc += (rsec->reloc_count++
7261 * sizeof (Elf32_External_Rela));
7262 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7265 /* Init the .got section contents if we're not
7266 emitting a reloc. */
7269 bfd_vma value = relocation;
7271 if (tls_ty == (TLS_TLS | TLS_LD))
7273 else if (tls_ty != 0)
7275 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7276 if (tls_ty == (TLS_TLS | TLS_TPREL))
7277 value += DTP_OFFSET - TP_OFFSET;
7279 if (tls_ty == (TLS_TLS | TLS_GD))
7281 bfd_put_32 (output_bfd, value,
7282 htab->got->contents + off + 4);
7286 bfd_put_32 (output_bfd, value,
7287 htab->got->contents + off);
7291 if (tls_ty & (TLS_LD | TLS_GD))
7300 if (off >= (bfd_vma) -2)
7303 if ((tls_type & TLS_TLS) != 0)
7305 if (tls_type != (TLS_TLS | TLS_LD))
7307 if ((tls_mask & TLS_LD) != 0
7309 || !h->def_dynamic))
7311 if (tls_type != (TLS_TLS | TLS_GD))
7313 if ((tls_mask & TLS_GD) != 0)
7315 if (tls_type != (TLS_TLS | TLS_DTPREL))
7317 if ((tls_mask & TLS_DTPREL) != 0)
7324 relocation = (htab->got->output_section->vma
7325 + htab->got->output_offset
7327 - SYM_VAL (htab->elf.hgot));
7329 /* Addends on got relocations don't make much sense.
7330 x+off@got is actually x@got+off, and since the got is
7331 generated by a hash table traversal, the value in the
7332 got at entry m+n bears little relation to the entry m. */
7334 (*_bfd_error_handler)
7335 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
7338 (long) rel->r_offset,
7344 /* Relocations that need no special processing. */
7345 case R_PPC_LOCAL24PC:
7346 /* It makes no sense to point a local relocation
7347 at a symbol not in this object. */
7348 if (unresolved_reloc)
7350 if (! (*info->callbacks->undefined_symbol) (info,
7351 h->root.root.string,
7361 case R_PPC_DTPREL16:
7362 case R_PPC_DTPREL16_LO:
7363 case R_PPC_DTPREL16_HI:
7364 case R_PPC_DTPREL16_HA:
7365 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7368 /* Relocations that may need to be propagated if this is a shared
7371 case R_PPC_TPREL16_LO:
7372 case R_PPC_TPREL16_HI:
7373 case R_PPC_TPREL16_HA:
7374 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7375 /* The TPREL16 relocs shouldn't really be used in shared
7376 libs as they will result in DT_TEXTREL being set, but
7377 support them anyway. */
7381 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7384 case R_PPC_DTPREL32:
7385 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7388 case R_PPC_DTPMOD32:
7394 case R_PPC_REL16_LO:
7395 case R_PPC_REL16_HI:
7396 case R_PPC_REL16_HA:
7400 if (h == NULL || h == htab->elf.hgot)
7406 case R_PPC_ADDR16_LO:
7407 case R_PPC_ADDR16_HI:
7408 case R_PPC_ADDR16_HA:
7415 case R_PPC_REL14_BRTAKEN:
7416 case R_PPC_REL14_BRNTAKEN:
7417 /* If these relocations are not to a named symbol, they can be
7418 handled right here, no need to bother the dynamic linker. */
7419 if (SYMBOL_CALLS_LOCAL (info, h)
7420 || h == htab->elf.hgot)
7426 case R_PPC_ADDR14_BRTAKEN:
7427 case R_PPC_ADDR14_BRNTAKEN:
7428 if (h != NULL && !info->shared)
7433 if ((input_section->flags & SEC_ALLOC) == 0
7439 && ((h->root.type == bfd_link_hash_undefined
7440 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
7441 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
7442 || (h->root.type == bfd_link_hash_undefweak
7443 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
7444 && (must_be_dyn_reloc (info, r_type)
7445 || !SYMBOL_CALLS_LOCAL (info, h)))
7446 || (ELIMINATE_COPY_RELOCS
7451 && !h->def_regular))
7456 fprintf (stderr, "ppc_elf_relocate_section needs to "
7457 "create relocation for %s\n",
7458 (h && h->root.root.string
7459 ? h->root.root.string : "<unknown>"));
7462 /* When generating a shared object, these relocations
7463 are copied into the output file to be resolved at run
7467 sreloc = elf_section_data (input_section)->sreloc;
7468 if (!htab->elf.dynamic_sections_created)
7469 sreloc = htab->reliplt;
7476 _bfd_elf_section_offset (output_bfd, info, input_section,
7478 if (outrel.r_offset == (bfd_vma) -1
7479 || outrel.r_offset == (bfd_vma) -2)
7480 skip = (int) outrel.r_offset;
7481 outrel.r_offset += (input_section->output_section->vma
7482 + input_section->output_offset);
7485 memset (&outrel, 0, sizeof outrel);
7487 && (h->root.type == bfd_link_hash_undefined
7488 || h->root.type == bfd_link_hash_undefweak))
7489 || !SYMBOL_REFERENCES_LOCAL (info, h))
7491 unresolved_reloc = FALSE;
7492 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
7493 outrel.r_addend = rel->r_addend;
7497 outrel.r_addend = relocation + rel->r_addend;
7499 if (r_type != R_PPC_ADDR32)
7505 /* If we get here when building a static
7506 executable, then the libc startup function
7507 responsible for applying indirect function
7508 relocations is going to complain about
7510 If we get here when building a dynamic
7511 executable, it will be because we have
7512 a text relocation. The dynamic loader
7513 will set the text segment writable and
7514 non-executable to apply text relocations.
7515 So we'll segfault when trying to run the
7516 indirection function to resolve the reloc. */
7517 (*_bfd_error_handler)
7518 (_("%B(%A+0x%lx): relocation %s for indirect "
7519 "function %s unsupported"),
7522 (long) rel->r_offset,
7527 else if (r_symndx == 0 || bfd_is_abs_section (sec))
7529 else if (sec == NULL || sec->owner == NULL)
7531 bfd_set_error (bfd_error_bad_value);
7538 /* We are turning this relocation into one
7539 against a section symbol. It would be
7540 proper to subtract the symbol's value,
7541 osec->vma, from the emitted reloc addend,
7542 but ld.so expects buggy relocs.
7543 FIXME: Why not always use a zero index? */
7544 osec = sec->output_section;
7545 indx = elf_section_data (osec)->dynindx;
7548 osec = htab->elf.text_index_section;
7549 indx = elf_section_data (osec)->dynindx;
7551 BFD_ASSERT (indx != 0);
7554 printf ("indx=%ld section=%s flags=%08x name=%s\n",
7555 indx, osec->name, osec->flags,
7556 h->root.root.string);
7560 outrel.r_info = ELF32_R_INFO (indx, r_type);
7562 else if (ifunc != NULL)
7563 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7565 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
7568 loc = sreloc->contents;
7569 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
7570 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7575 /* This reloc will be computed at runtime. We clear the memory
7576 so that it contains predictable value. */
7578 && ((input_section->flags & SEC_ALLOC) != 0
7579 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
7581 relocation = howto->pc_relative ? outrel.r_offset : 0;
7588 case R_PPC_RELAX32PC_PLT:
7589 case R_PPC_RELAX32_PLT:
7592 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7593 info->shared ? addend : 0);
7594 if (htab->plt_type == PLT_NEW)
7595 relocation = (htab->glink->output_section->vma
7596 + htab->glink->output_offset
7597 + ent->glink_offset);
7599 relocation = (htab->plt->output_section->vma
7600 + htab->plt->output_offset
7603 if (r_type == R_PPC_RELAX32_PLT)
7607 case R_PPC_RELAX32PC:
7608 relocation -= (input_section->output_section->vma
7609 + input_section->output_offset
7610 + rel->r_offset - 4);
7619 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
7620 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
7622 /* We're clearing the bits for R_PPC_ADDR16_HA
7623 and R_PPC_ADDR16_LO here. */
7627 /* t0 is HA, t1 is LO */
7628 relocation += addend;
7629 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
7630 t1 |= relocation & 0xffff;
7632 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
7633 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
7635 /* Rewrite the reloc and convert one of the trailing nop
7636 relocs to describe this relocation. */
7637 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
7638 /* The relocs are at the bottom 2 bytes */
7639 rel[0].r_offset += 2;
7640 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
7641 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
7642 rel[1].r_offset += 4;
7643 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
7648 /* Indirect .sdata relocation. */
7649 case R_PPC_EMB_SDAI16:
7650 BFD_ASSERT (htab->sdata[0].section != NULL);
7651 if (!is_static_defined (htab->sdata[0].sym))
7653 unresolved_reloc = TRUE;
7657 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
7658 h, relocation, rel);
7662 /* Indirect .sdata2 relocation. */
7663 case R_PPC_EMB_SDA2I16:
7664 BFD_ASSERT (htab->sdata[1].section != NULL);
7665 if (!is_static_defined (htab->sdata[1].sym))
7667 unresolved_reloc = TRUE;
7671 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
7672 h, relocation, rel);
7676 /* Handle the TOC16 reloc. We want to use the offset within the .got
7677 section, not the actual VMA. This is appropriate when generating
7678 an embedded ELF object, for which the .got section acts like the
7679 AIX .toc section. */
7680 case R_PPC_TOC16: /* phony GOT16 relocations */
7681 if (sec == NULL || sec->output_section == NULL)
7683 unresolved_reloc = TRUE;
7686 BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
7687 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
7689 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
7692 case R_PPC_PLTREL24:
7693 if (h == NULL || ifunc != NULL)
7695 /* Relocation is to the entry for this symbol in the
7696 procedure linkage table. */
7698 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
7699 info->shared ? addend : 0);
7702 || htab->plt == NULL)
7704 /* We didn't make a PLT entry for this symbol. This
7705 happens when statically linking PIC code, or when
7706 using -Bsymbolic. */
7710 unresolved_reloc = FALSE;
7711 if (htab->plt_type == PLT_NEW)
7712 relocation = (htab->glink->output_section->vma
7713 + htab->glink->output_offset
7714 + ent->glink_offset);
7716 relocation = (htab->plt->output_section->vma
7717 + htab->plt->output_offset
7722 /* Relocate against _SDA_BASE_. */
7723 case R_PPC_SDAREL16:
7726 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
7729 || sec->output_section == NULL
7730 || !is_static_defined (sda))
7732 unresolved_reloc = TRUE;
7735 addend -= SYM_VAL (sda);
7737 name = bfd_get_section_name (abfd, sec->output_section);
7738 if (! ((CONST_STRNEQ (name, ".sdata")
7739 && (name[6] == 0 || name[6] == '.'))
7740 || (CONST_STRNEQ (name, ".sbss")
7741 && (name[5] == 0 || name[5] == '.'))))
7743 (*_bfd_error_handler)
7744 (_("%B: the target (%s) of a %s relocation is "
7745 "in the wrong output section (%s)"),
7754 /* Relocate against _SDA2_BASE_. */
7755 case R_PPC_EMB_SDA2REL:
7758 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
7761 || sec->output_section == NULL
7762 || !is_static_defined (sda))
7764 unresolved_reloc = TRUE;
7767 addend -= SYM_VAL (sda);
7769 name = bfd_get_section_name (abfd, sec->output_section);
7770 if (! (CONST_STRNEQ (name, ".sdata2")
7771 || CONST_STRNEQ (name, ".sbss2")))
7773 (*_bfd_error_handler)
7774 (_("%B: the target (%s) of a %s relocation is "
7775 "in the wrong output section (%s)"),
7784 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7785 case R_PPC_EMB_SDA21:
7786 case R_PPC_EMB_RELSDA:
7790 struct elf_link_hash_entry *sda = NULL;
7792 if (sec == NULL || sec->output_section == NULL)
7794 unresolved_reloc = TRUE;
7798 name = bfd_get_section_name (abfd, sec->output_section);
7799 if (((CONST_STRNEQ (name, ".sdata")
7800 && (name[6] == 0 || name[6] == '.'))
7801 || (CONST_STRNEQ (name, ".sbss")
7802 && (name[5] == 0 || name[5] == '.'))))
7805 sda = htab->sdata[0].sym;
7807 else if (CONST_STRNEQ (name, ".sdata2")
7808 || CONST_STRNEQ (name, ".sbss2"))
7811 sda = htab->sdata[1].sym;
7813 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
7814 || strcmp (name, ".PPC.EMB.sbss0") == 0)
7820 (*_bfd_error_handler)
7821 (_("%B: the target (%s) of a %s relocation is "
7822 "in the wrong output section (%s)"),
7828 bfd_set_error (bfd_error_bad_value);
7835 if (!is_static_defined (sda))
7837 unresolved_reloc = TRUE;
7840 addend -= SYM_VAL (sda);
7843 if (r_type == R_PPC_EMB_SDA21)
7844 { /* fill in register field */
7845 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7846 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7847 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7852 /* Relocate against the beginning of the section. */
7854 case R_PPC_SECTOFF_LO:
7855 case R_PPC_SECTOFF_HI:
7856 case R_PPC_SECTOFF_HA:
7857 if (sec == NULL || sec->output_section == NULL)
7859 unresolved_reloc = TRUE;
7862 addend -= sec->output_section->vma;
7865 /* Negative relocations. */
7866 case R_PPC_EMB_NADDR32:
7867 case R_PPC_EMB_NADDR16:
7868 case R_PPC_EMB_NADDR16_LO:
7869 case R_PPC_EMB_NADDR16_HI:
7870 case R_PPC_EMB_NADDR16_HA:
7871 addend -= 2 * relocation;
7875 case R_PPC_GLOB_DAT:
7876 case R_PPC_JMP_SLOT:
7877 case R_PPC_RELATIVE:
7878 case R_PPC_IRELATIVE:
7880 case R_PPC_PLTREL32:
7881 case R_PPC_PLT16_LO:
7882 case R_PPC_PLT16_HI:
7883 case R_PPC_PLT16_HA:
7885 case R_PPC_EMB_RELSEC16:
7886 case R_PPC_EMB_RELST_LO:
7887 case R_PPC_EMB_RELST_HI:
7888 case R_PPC_EMB_RELST_HA:
7889 case R_PPC_EMB_BIT_FLD:
7890 (*_bfd_error_handler)
7891 (_("%B: relocation %s is not yet supported for symbol %s."),
7896 bfd_set_error (bfd_error_invalid_operation);
7901 /* Do any further special processing. */
7907 case R_PPC_ADDR16_HA:
7908 case R_PPC_REL16_HA:
7909 case R_PPC_SECTOFF_HA:
7910 case R_PPC_TPREL16_HA:
7911 case R_PPC_DTPREL16_HA:
7912 case R_PPC_EMB_NADDR16_HA:
7913 case R_PPC_EMB_RELST_HA:
7914 /* It's just possible that this symbol is a weak symbol
7915 that's not actually defined anywhere. In that case,
7916 'sec' would be NULL, and we should leave the symbol
7917 alone (it will be set to zero elsewhere in the link). */
7922 case R_PPC_PLT16_HA:
7923 case R_PPC_GOT16_HA:
7924 case R_PPC_GOT_TLSGD16_HA:
7925 case R_PPC_GOT_TLSLD16_HA:
7926 case R_PPC_GOT_TPREL16_HA:
7927 case R_PPC_GOT_DTPREL16_HA:
7928 /* Add 0x10000 if sign bit in 0:15 is set.
7929 Bits 0:15 are not used. */
7935 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
7936 "offset = %ld, addend = %ld\n",
7941 (long) rel->r_offset,
7945 if (unresolved_reloc
7946 && !((input_section->flags & SEC_DEBUGGING) != 0
7949 (*_bfd_error_handler)
7950 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7953 (long) rel->r_offset,
7959 r = _bfd_final_link_relocate (howto,
7967 if (r != bfd_reloc_ok)
7969 if (r == bfd_reloc_overflow)
7974 && h->root.type == bfd_link_hash_undefweak
7975 && howto->pc_relative)
7977 /* Assume this is a call protected by other code that
7978 detect the symbol is undefined. If this is the case,
7979 we can safely ignore the overflow. If not, the
7980 program is hosed anyway, and a little warning isn't
7986 if (! (*info->callbacks->reloc_overflow) (info,
7987 (h ? &h->root : NULL),
7998 (*_bfd_error_handler)
7999 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
8000 input_bfd, input_section,
8001 (long) rel->r_offset, howto->name, sym_name, (int) r);
8008 fprintf (stderr, "\n");
8014 /* Finish up dynamic symbol handling. We set the contents of various
8015 dynamic sections here. */
8018 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
8019 struct bfd_link_info *info,
8020 struct elf_link_hash_entry *h,
8021 Elf_Internal_Sym *sym)
8023 struct ppc_elf_link_hash_table *htab;
8024 struct plt_entry *ent;
8025 bfd_boolean doneone;
8028 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
8029 h->root.root.string);
8032 htab = ppc_elf_hash_table (info);
8033 BFD_ASSERT (htab->elf.dynobj != NULL);
8036 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8037 if (ent->plt.offset != (bfd_vma) -1)
8041 Elf_Internal_Rela rela;
8043 bfd_vma reloc_index;
8045 if (htab->plt_type == PLT_NEW
8046 || !htab->elf.dynamic_sections_created
8047 || h->dynindx == -1)
8048 reloc_index = ent->plt.offset / 4;
8051 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
8052 / htab->plt_slot_size);
8053 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
8054 && htab->plt_type == PLT_OLD)
8055 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
8058 /* This symbol has an entry in the procedure linkage table.
8060 if (htab->plt_type == PLT_VXWORKS
8061 && htab->elf.dynamic_sections_created
8062 && h->dynindx != -1)
8065 const bfd_vma *plt_entry;
8067 /* The first three entries in .got.plt are reserved. */
8068 got_offset = (reloc_index + 3) * 4;
8070 /* Use the right PLT. */
8071 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
8072 : ppc_elf_vxworks_plt_entry;
8074 /* Fill in the .plt on VxWorks. */
8077 bfd_put_32 (output_bfd,
8078 plt_entry[0] | PPC_HA (got_offset),
8079 htab->plt->contents + ent->plt.offset + 0);
8080 bfd_put_32 (output_bfd,
8081 plt_entry[1] | PPC_LO (got_offset),
8082 htab->plt->contents + ent->plt.offset + 4);
8086 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
8088 bfd_put_32 (output_bfd,
8089 plt_entry[0] | PPC_HA (got_loc),
8090 htab->plt->contents + ent->plt.offset + 0);
8091 bfd_put_32 (output_bfd,
8092 plt_entry[1] | PPC_LO (got_loc),
8093 htab->plt->contents + ent->plt.offset + 4);
8096 bfd_put_32 (output_bfd, plt_entry[2],
8097 htab->plt->contents + ent->plt.offset + 8);
8098 bfd_put_32 (output_bfd, plt_entry[3],
8099 htab->plt->contents + ent->plt.offset + 12);
8101 /* This instruction is an immediate load. The value loaded is
8102 the byte offset of the R_PPC_JMP_SLOT relocation from the
8103 start of the .rela.plt section. The value is stored in the
8104 low-order 16 bits of the load instruction. */
8105 /* NOTE: It appears that this is now an index rather than a
8106 prescaled offset. */
8107 bfd_put_32 (output_bfd,
8108 plt_entry[4] | reloc_index,
8109 htab->plt->contents + ent->plt.offset + 16);
8110 /* This instruction is a PC-relative branch whose target is
8111 the start of the PLT section. The address of this branch
8112 instruction is 20 bytes beyond the start of this PLT entry.
8113 The address is encoded in bits 6-29, inclusive. The value
8114 stored is right-shifted by two bits, permitting a 26-bit
8116 bfd_put_32 (output_bfd,
8118 | (-(ent->plt.offset + 20) & 0x03fffffc)),
8119 htab->plt->contents + ent->plt.offset + 20);
8120 bfd_put_32 (output_bfd, plt_entry[6],
8121 htab->plt->contents + ent->plt.offset + 24);
8122 bfd_put_32 (output_bfd, plt_entry[7],
8123 htab->plt->contents + ent->plt.offset + 28);
8125 /* Fill in the GOT entry corresponding to this PLT slot with
8126 the address immediately after the the "bctr" instruction
8127 in this PLT entry. */
8128 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
8129 + htab->plt->output_offset
8130 + ent->plt.offset + 16),
8131 htab->sgotplt->contents + got_offset);
8135 /* Fill in a couple of entries in .rela.plt.unloaded. */
8136 loc = htab->srelplt2->contents
8137 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
8138 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
8139 * sizeof (Elf32_External_Rela));
8141 /* Provide the @ha relocation for the first instruction. */
8142 rela.r_offset = (htab->plt->output_section->vma
8143 + htab->plt->output_offset
8144 + ent->plt.offset + 2);
8145 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8147 rela.r_addend = got_offset;
8148 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8149 loc += sizeof (Elf32_External_Rela);
8151 /* Provide the @l relocation for the second instruction. */
8152 rela.r_offset = (htab->plt->output_section->vma
8153 + htab->plt->output_offset
8154 + ent->plt.offset + 6);
8155 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
8157 rela.r_addend = got_offset;
8158 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8159 loc += sizeof (Elf32_External_Rela);
8161 /* Provide a relocation for the GOT entry corresponding to this
8162 PLT slot. Point it at the middle of the .plt entry. */
8163 rela.r_offset = (htab->sgotplt->output_section->vma
8164 + htab->sgotplt->output_offset
8166 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
8168 rela.r_addend = ent->plt.offset + 16;
8169 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8172 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
8173 In particular, the offset for the relocation is not the
8174 address of the PLT entry for this function, as specified
8175 by the ABI. Instead, the offset is set to the address of
8176 the GOT slot for this function. See EABI 4.4.4.1. */
8177 rela.r_offset = (htab->sgotplt->output_section->vma
8178 + htab->sgotplt->output_offset
8184 asection *splt = htab->plt;
8185 if (!htab->elf.dynamic_sections_created
8186 || h->dynindx == -1)
8189 rela.r_offset = (splt->output_section->vma
8190 + splt->output_offset
8192 if (htab->plt_type == PLT_OLD
8193 || !htab->elf.dynamic_sections_created
8194 || h->dynindx == -1)
8196 /* We don't need to fill in the .plt. The ppc dynamic
8197 linker will fill it in. */
8201 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
8202 + htab->glink->output_section->vma
8203 + htab->glink->output_offset);
8204 bfd_put_32 (output_bfd, val,
8205 splt->contents + ent->plt.offset);
8209 /* Fill in the entry in the .rela.plt section. */
8211 if (!htab->elf.dynamic_sections_created
8212 || h->dynindx == -1)
8214 BFD_ASSERT (h->type == STT_GNU_IFUNC
8216 && (h->root.type == bfd_link_hash_defined
8217 || h->root.type == bfd_link_hash_defweak));
8218 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8219 rela.r_addend = SYM_VAL (h);
8222 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
8224 if (!htab->elf.dynamic_sections_created
8225 || h->dynindx == -1)
8226 loc = (htab->reliplt->contents
8227 + (htab->reliplt->reloc_count++
8228 * sizeof (Elf32_External_Rela)));
8230 loc = (htab->relplt->contents
8231 + reloc_index * sizeof (Elf32_External_Rela));
8232 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8234 if (!h->def_regular)
8236 /* Mark the symbol as undefined, rather than as
8237 defined in the .plt section. Leave the value if
8238 there were any relocations where pointer equality
8239 matters (this is a clue for the dynamic linker, to
8240 make function pointer comparisons work between an
8241 application and shared library), otherwise set it
8243 sym->st_shndx = SHN_UNDEF;
8244 if (!h->pointer_equality_needed)
8246 else if (!h->ref_regular_nonweak)
8248 /* This breaks function pointer comparisons, but
8249 that is better than breaking tests for a NULL
8250 function pointer. */
8254 else if (h->type == STT_GNU_IFUNC
8257 /* Set the value of ifunc symbols in a non-pie
8258 executable to the glink entry. This is to avoid
8259 text relocations. We can't do this for ifunc in
8260 allocate_dynrelocs, as we do for normal dynamic
8261 function symbols with plt entries, because we need
8262 to keep the original value around for the ifunc
8264 sym->st_shndx = (_bfd_elf_section_from_bfd_section
8265 (output_bfd, htab->glink->output_section));
8266 sym->st_value = (ent->glink_offset +
8267 htab->glink->output_offset
8268 + htab->glink->output_section->vma);
8273 if (htab->plt_type == PLT_NEW
8274 || !htab->elf.dynamic_sections_created
8275 || h->dynindx == -1)
8277 asection *splt = htab->plt;
8278 if (!htab->elf.dynamic_sections_created
8279 || h->dynindx == -1)
8282 write_glink_stub (ent, splt, info);
8285 /* We only need one non-PIC glink stub. */
8295 Elf_Internal_Rela rela;
8298 /* This symbols needs a copy reloc. Set it up. */
8301 fprintf (stderr, ", copy");
8304 BFD_ASSERT (h->dynindx != -1);
8306 if (ppc_elf_hash_entry (h)->has_sda_refs)
8310 BFD_ASSERT (s != NULL);
8312 rela.r_offset = SYM_VAL (h);
8313 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
8315 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
8316 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8320 fprintf (stderr, "\n");
8323 /* Mark some specially defined symbols as absolute. */
8324 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8325 || (!htab->is_vxworks
8326 && (h == htab->elf.hgot
8327 || strcmp (h->root.root.string,
8328 "_PROCEDURE_LINKAGE_TABLE_") == 0)))
8329 sym->st_shndx = SHN_ABS;
8334 static enum elf_reloc_type_class
8335 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8337 switch (ELF32_R_TYPE (rela->r_info))
8339 case R_PPC_RELATIVE:
8340 return reloc_class_relative;
8343 case R_PPC_JMP_SLOT:
8344 return reloc_class_plt;
8346 return reloc_class_copy;
8348 return reloc_class_normal;
8352 /* Finish up the dynamic sections. */
8355 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
8356 struct bfd_link_info *info)
8360 struct ppc_elf_link_hash_table *htab;
8363 bfd_boolean ret = TRUE;
8366 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
8369 htab = ppc_elf_hash_table (info);
8370 dynobj = elf_hash_table (info)->dynobj;
8371 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8372 if (htab->is_vxworks)
8373 splt = bfd_get_section_by_name (dynobj, ".plt");
8378 if (htab->elf.hgot != NULL)
8379 got = SYM_VAL (htab->elf.hgot);
8381 if (htab->elf.dynamic_sections_created)
8383 Elf32_External_Dyn *dyncon, *dynconend;
8385 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
8387 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8388 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8389 for (; dyncon < dynconend; dyncon++)
8391 Elf_Internal_Dyn dyn;
8394 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8399 if (htab->is_vxworks)
8403 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8407 dyn.d_un.d_val = htab->relplt->size;
8412 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8416 dyn.d_un.d_ptr = got;
8420 if (htab->is_vxworks)
8423 dyn.d_un.d_ptr -= htab->relplt->size;
8429 if (htab->is_vxworks
8430 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
8435 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8439 if (htab->got != NULL)
8441 if (htab->elf.hgot->root.u.def.section == htab->got
8442 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
8444 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
8446 p += htab->elf.hgot->root.u.def.value;
8447 if (htab->plt_type == PLT_OLD)
8449 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
8450 so that a function can easily find the address of
8451 _GLOBAL_OFFSET_TABLE_. */
8452 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
8453 < htab->elf.hgot->root.u.def.section->size);
8454 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
8459 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
8460 BFD_ASSERT (htab->elf.hgot->root.u.def.value
8461 < htab->elf.hgot->root.u.def.section->size);
8462 bfd_put_32 (output_bfd, val, p);
8467 (*_bfd_error_handler) (_("%s not defined in linker created %s"),
8468 htab->elf.hgot->root.root.string,
8469 (htab->sgotplt != NULL
8470 ? htab->sgotplt->name : htab->got->name));
8471 bfd_set_error (bfd_error_bad_value);
8475 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
8478 /* Fill in the first entry in the VxWorks procedure linkage table. */
8479 if (splt && splt->size > 0)
8481 /* Use the right PLT. */
8482 static const bfd_vma *plt_entry = NULL;
8483 plt_entry = info->shared ?
8484 ppc_elf_vxworks_pic_plt0_entry : ppc_elf_vxworks_plt0_entry;
8488 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
8490 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
8491 splt->contents + 0);
8492 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
8493 splt->contents + 4);
8497 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
8498 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
8500 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
8501 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
8502 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
8503 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
8504 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
8505 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
8509 Elf_Internal_Rela rela;
8512 loc = htab->srelplt2->contents;
8514 /* Output the @ha relocation for the first instruction. */
8515 rela.r_offset = (htab->plt->output_section->vma
8516 + htab->plt->output_offset
8518 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8520 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8521 loc += sizeof (Elf32_External_Rela);
8523 /* Output the @l relocation for the second instruction. */
8524 rela.r_offset = (htab->plt->output_section->vma
8525 + htab->plt->output_offset
8527 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8529 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8530 loc += sizeof (Elf32_External_Rela);
8532 /* Fix up the remaining relocations. They may have the wrong
8533 symbol index for _G_O_T_ or _P_L_T_ depending on the order
8534 in which symbols were output. */
8535 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
8537 Elf_Internal_Rela rel;
8539 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8540 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
8541 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8542 loc += sizeof (Elf32_External_Rela);
8544 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8545 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
8546 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8547 loc += sizeof (Elf32_External_Rela);
8549 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
8550 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
8551 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
8552 loc += sizeof (Elf32_External_Rela);
8557 if (htab->glink != NULL
8558 && htab->glink->contents != NULL
8559 && htab->elf.dynamic_sections_created)
8562 unsigned char *endp;
8567 * PIC glink code is the following:
8569 * # ith PLT code stub.
8570 * addis 11,30,(plt+(i-1)*4-got)@ha
8571 * lwz 11,(plt+(i-1)*4-got)@l(11)
8575 * # A table of branches, one for each plt entry.
8576 * # The idea is that the plt call stub loads ctr and r11 with these
8577 * # addresses, so (r11 - res_0) gives the plt index * 4.
8578 * res_0: b PLTresolve
8579 * res_1: b PLTresolve
8581 * # Some number of entries towards the end can be nops
8587 * addis 11,11,(1f-res_0)@ha
8590 * 1: addi 11,11,(1b-res_0)@l
8593 * sub 11,11,12 # r11 = index * 4
8594 * addis 12,12,(got+4-1b)@ha
8595 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
8596 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
8599 * add 11,0,11 # r11 = index * 12 = reloc offset.
8602 static const unsigned int pic_plt_resolve[] =
8623 * Non-PIC glink code is a little simpler.
8625 * # ith PLT code stub.
8626 * lis 11,(plt+(i-1)*4)@ha
8627 * lwz 11,(plt+(i-1)*4)@l(11)
8631 * The branch table is the same, then comes
8635 * addis 11,11,(-res_0)@ha
8636 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
8637 * addi 11,11,(-res_0)@l # r11 = index * 4
8640 * lwz 12,(got+8)@l(12) # got[2] contains the map address
8641 * add 11,0,11 # r11 = index * 12 = reloc offset.
8644 static const unsigned int plt_resolve[] =
8664 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
8666 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
8669 /* Build the branch table, one for each plt entry (less one),
8670 and perhaps some padding. */
8671 p = htab->glink->contents;
8672 p += htab->glink_pltresolve;
8673 endp = htab->glink->contents;
8674 endp += htab->glink->size - GLINK_PLTRESOLVE;
8675 while (p < endp - 8 * 4)
8677 bfd_put_32 (output_bfd, B + endp - p, p);
8682 bfd_put_32 (output_bfd, NOP, p);
8686 res0 = (htab->glink_pltresolve
8687 + htab->glink->output_section->vma
8688 + htab->glink->output_offset);
8690 /* Last comes the PLTresolve stub. */
8695 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
8697 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
8700 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
8702 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
8703 + htab->glink->output_section->vma
8704 + htab->glink->output_offset);
8706 bfd_put_32 (output_bfd,
8707 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
8708 bfd_put_32 (output_bfd,
8709 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
8710 bfd_put_32 (output_bfd,
8711 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
8712 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
8714 bfd_put_32 (output_bfd,
8715 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8716 bfd_put_32 (output_bfd,
8717 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
8721 bfd_put_32 (output_bfd,
8722 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
8723 bfd_put_32 (output_bfd,
8724 LWZ_12_12 + 4, p + 9*4);
8729 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
8731 bfd_put_32 (output_bfd, plt_resolve[i], p);
8734 p -= 4 * ARRAY_SIZE (plt_resolve);
8736 bfd_put_32 (output_bfd,
8737 LIS_12 + PPC_HA (got + 4), p + 0*4);
8738 bfd_put_32 (output_bfd,
8739 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
8740 bfd_put_32 (output_bfd,
8741 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
8742 if (PPC_HA (got + 4) == PPC_HA (got + 8))
8744 bfd_put_32 (output_bfd,
8745 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
8746 bfd_put_32 (output_bfd,
8747 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
8751 bfd_put_32 (output_bfd,
8752 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
8753 bfd_put_32 (output_bfd,
8754 LWZ_12_12 + 4, p + 6*4);
8762 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
8763 #define TARGET_LITTLE_NAME "elf32-powerpcle"
8764 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
8765 #define TARGET_BIG_NAME "elf32-powerpc"
8766 #define ELF_ARCH bfd_arch_powerpc
8767 #define ELF_MACHINE_CODE EM_PPC
8768 #ifdef __QNXTARGET__
8769 #define ELF_MAXPAGESIZE 0x1000
8771 #define ELF_MAXPAGESIZE 0x10000
8773 #define ELF_MINPAGESIZE 0x1000
8774 #define ELF_COMMONPAGESIZE 0x1000
8775 #define elf_info_to_howto ppc_elf_info_to_howto
8777 #ifdef EM_CYGNUS_POWERPC
8778 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8782 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8785 #define elf_backend_plt_not_loaded 1
8786 #define elf_backend_can_gc_sections 1
8787 #define elf_backend_can_refcount 1
8788 #define elf_backend_rela_normal 1
8790 #define bfd_elf32_mkobject ppc_elf_mkobject
8791 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
8792 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
8793 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
8794 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
8795 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
8796 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
8797 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
8799 #define elf_backend_object_p ppc_elf_object_p
8800 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
8801 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
8802 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
8803 #define elf_backend_relocate_section ppc_elf_relocate_section
8804 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
8805 #define elf_backend_check_relocs ppc_elf_check_relocs
8806 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
8807 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
8808 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
8809 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
8810 #define elf_backend_hash_symbol ppc_elf_hash_symbol
8811 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
8812 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
8813 #define elf_backend_fake_sections ppc_elf_fake_sections
8814 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
8815 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
8816 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
8817 #define elf_backend_write_core_note ppc_elf_write_core_note
8818 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
8819 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
8820 #define elf_backend_final_write_processing ppc_elf_final_write_processing
8821 #define elf_backend_write_section ppc_elf_write_section
8822 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
8823 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
8824 #define elf_backend_action_discarded ppc_elf_action_discarded
8825 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
8826 #define elf_backend_post_process_headers _bfd_elf_set_osabi
8828 #include "elf32-target.h"
8830 /* VxWorks Target */
8832 #undef TARGET_LITTLE_SYM
8833 #undef TARGET_LITTLE_NAME
8835 #undef TARGET_BIG_SYM
8836 #define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
8837 #undef TARGET_BIG_NAME
8838 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
8840 /* VxWorks uses the elf default section flags for .plt. */
8841 static const struct bfd_elf_special_section *
8842 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
8844 if (sec->name == NULL)
8847 if (strcmp (sec->name, ".plt") == 0)
8848 return _bfd_elf_get_sec_type_attr (abfd, sec);
8850 return ppc_elf_get_sec_type_attr (abfd, sec);
8853 /* Like ppc_elf_link_hash_table_create, but overrides
8854 appropriately for VxWorks. */
8855 static struct bfd_link_hash_table *
8856 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
8858 struct bfd_link_hash_table *ret;
8860 ret = ppc_elf_link_hash_table_create (abfd);
8863 struct ppc_elf_link_hash_table *htab
8864 = (struct ppc_elf_link_hash_table *)ret;
8865 htab->is_vxworks = 1;
8866 htab->plt_type = PLT_VXWORKS;
8867 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
8868 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
8869 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
8874 /* Tweak magic VxWorks symbols as they are loaded. */
8876 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
8877 struct bfd_link_info *info,
8878 Elf_Internal_Sym *sym,
8879 const char **namep ATTRIBUTE_UNUSED,
8880 flagword *flagsp ATTRIBUTE_UNUSED,
8884 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
8888 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
8892 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
8894 ppc_elf_final_write_processing(abfd, linker);
8895 elf_vxworks_final_write_processing(abfd, linker);
8898 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
8900 #undef elf_backend_want_plt_sym
8901 #define elf_backend_want_plt_sym 1
8902 #undef elf_backend_want_got_plt
8903 #define elf_backend_want_got_plt 1
8904 #undef elf_backend_got_symbol_offset
8905 #define elf_backend_got_symbol_offset 0
8906 #undef elf_backend_plt_not_loaded
8907 #define elf_backend_plt_not_loaded 0
8908 #undef elf_backend_plt_readonly
8909 #define elf_backend_plt_readonly 1
8910 #undef elf_backend_got_header_size
8911 #define elf_backend_got_header_size 12
8913 #undef bfd_elf32_get_synthetic_symtab
8915 #undef bfd_elf32_bfd_link_hash_table_create
8916 #define bfd_elf32_bfd_link_hash_table_create \
8917 ppc_elf_vxworks_link_hash_table_create
8918 #undef elf_backend_add_symbol_hook
8919 #define elf_backend_add_symbol_hook \
8920 ppc_elf_vxworks_add_symbol_hook
8921 #undef elf_backend_link_output_symbol_hook
8922 #define elf_backend_link_output_symbol_hook \
8923 elf_vxworks_link_output_symbol_hook
8924 #undef elf_backend_final_write_processing
8925 #define elf_backend_final_write_processing \
8926 ppc_elf_vxworks_final_write_processing
8927 #undef elf_backend_get_sec_type_attr
8928 #define elf_backend_get_sec_type_attr \
8929 ppc_elf_vxworks_get_sec_type_attr
8930 #undef elf_backend_emit_relocs
8931 #define elf_backend_emit_relocs \
8932 elf_vxworks_emit_relocs
8935 #define elf32_bed ppc_elf_vxworks_bed
8936 #undef elf_backend_post_process_headers
8938 #include "elf32-target.h"
projects / platform / upstream / binutils.git / blob