1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2014 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
38 #include "elf-linux-psinfo.h"
40 typedef enum split16_format_type
47 /* RELA relocations are used here. */
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
61 /* The name of the dynamic interpreter. This is put in the .interp
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE 4*4
72 #define TLS_GET_ADDR_GLINK_SIZE 12*4
74 /* VxWorks uses its own plt layout, filled in by the static linker. */
76 /* The standard VxWorks PLT entry. */
77 #define VXWORKS_PLT_ENTRY_SIZE 32
78 static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
90 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
100 0x60000000, /* nop */
103 /* The initial VxWorks PLT entry. */
104 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
117 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
130 /* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
133 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 /* The number of relocations in the PLTResolve slot. */
136 #define VXWORKS_PLTRESOLVE_RELOCS 2
137 /* The number of relocations in the PLTResolve slot when when creating
139 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
141 /* Some instructions. */
142 #define ADDIS_11_11 0x3d6b0000
143 #define ADDIS_11_30 0x3d7e0000
144 #define ADDIS_12_12 0x3d8c0000
145 #define ADDI_11_11 0x396b0000
146 #define ADD_0_11_11 0x7c0b5a14
147 #define ADD_3_12_2 0x7c6c1214
148 #define ADD_11_0_11 0x7d605a14
150 #define BA 0x48000002
151 #define BCL_20_31 0x429f0005
152 #define BCTR 0x4e800420
153 #define BEQLR 0x4d820020
154 #define CMPWI_11_0 0x2c0b0000
155 #define LIS_11 0x3d600000
156 #define LIS_12 0x3d800000
157 #define LWZU_0_12 0x840c0000
158 #define LWZ_0_12 0x800c0000
159 #define LWZ_11_3 0x81630000
160 #define LWZ_11_11 0x816b0000
161 #define LWZ_11_30 0x817e0000
162 #define LWZ_12_3 0x81830000
163 #define LWZ_12_12 0x818c0000
164 #define MR_0_3 0x7c601b78
165 #define MR_3_0 0x7c030378
166 #define MFLR_0 0x7c0802a6
167 #define MFLR_12 0x7d8802a6
168 #define MTCTR_0 0x7c0903a6
169 #define MTCTR_11 0x7d6903a6
170 #define MTLR_0 0x7c0803a6
171 #define NOP 0x60000000
172 #define SUB_11_11_12 0x7d6c5850
174 /* Offset of tp and dtp pointers from start of TLS block. */
175 #define TP_OFFSET 0x7000
176 #define DTP_OFFSET 0x8000
178 /* The value of a defined global symbol. */
179 #define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
184 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
186 static reloc_howto_type ppc_elf_howto_raw[] = {
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE, /* type */
190 2, /* size (0 = byte, 1 = short, 2 = long) */
192 FALSE, /* pc_relative */
194 complain_overflow_dont, /* complain_on_overflow */
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_NONE", /* name */
197 FALSE, /* partial_inplace */
200 FALSE), /* pcrel_offset */
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE, /* pc_relative */
209 complain_overflow_dont, /* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR32", /* name */
212 FALSE, /* partial_inplace */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE, /* pc_relative */
225 complain_overflow_signed, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC_ADDR24", /* name */
228 FALSE, /* partial_inplace */
230 0x3fffffc, /* dst_mask */
231 FALSE), /* pcrel_offset */
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16, /* type */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
238 FALSE, /* pc_relative */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC_ADDR16", /* name */
243 FALSE, /* partial_inplace */
245 0xffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO, /* type */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
253 FALSE, /* pc_relative */
255 complain_overflow_dont,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
258 FALSE, /* partial_inplace */
260 0xffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI, /* type */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
268 FALSE, /* pc_relative */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
273 FALSE, /* partial_inplace */
275 0xffff, /* dst_mask */
276 FALSE), /* pcrel_offset */
278 /* The high order 16 bits of an address, plus 1 if the contents of
279 the low 16 bits, treated as a signed number, is negative. */
280 HOWTO (R_PPC_ADDR16_HA, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE, /* pc_relative */
286 complain_overflow_dont, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
289 FALSE, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_signed, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14", /* 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 expected to be taken. The lower two
312 bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_signed, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
322 FALSE, /* partial_inplace */
324 0xfffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE, /* pc_relative */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
339 FALSE, /* partial_inplace */
341 0xfffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
344 /* A relative 26 bit branch; the lower two bits must be zero. */
345 HOWTO (R_PPC_REL24, /* type */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
349 TRUE, /* pc_relative */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC_REL24", /* name */
354 FALSE, /* partial_inplace */
356 0x3fffffc, /* dst_mask */
357 TRUE), /* pcrel_offset */
359 /* A relative 16 bit branch; the lower two bits must be zero. */
360 HOWTO (R_PPC_REL14, /* 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", /* 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 expected to be taken. The lower two bits must be
377 HOWTO (R_PPC_REL14_BRTAKEN, /* 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_BRTAKEN", /* name */
386 FALSE, /* partial_inplace */
388 0xfffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is not expected to be taken. The lower two bits must
394 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE, /* pc_relative */
400 complain_overflow_signed, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
403 FALSE, /* partial_inplace */
405 0xfffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
410 HOWTO (R_PPC_GOT16, /* type */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
414 FALSE, /* pc_relative */
416 complain_overflow_signed, /* complain_on_overflow */
417 bfd_elf_generic_reloc, /* special_function */
418 "R_PPC_GOT16", /* name */
419 FALSE, /* partial_inplace */
421 0xffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
426 HOWTO (R_PPC_GOT16_LO, /* type */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
430 FALSE, /* pc_relative */
432 complain_overflow_dont, /* complain_on_overflow */
433 bfd_elf_generic_reloc, /* special_function */
434 "R_PPC_GOT16_LO", /* name */
435 FALSE, /* partial_inplace */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
442 HOWTO (R_PPC_GOT16_HI, /* type */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
446 FALSE, /* pc_relative */
448 complain_overflow_dont, /* complain_on_overflow */
449 bfd_elf_generic_reloc, /* special_function */
450 "R_PPC_GOT16_HI", /* name */
451 FALSE, /* partial_inplace */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
458 HOWTO (R_PPC_GOT16_HA, /* type */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
462 FALSE, /* pc_relative */
464 complain_overflow_dont, /* complain_on_overflow */
465 ppc_elf_addr16_ha_reloc, /* special_function */
466 "R_PPC_GOT16_HA", /* name */
467 FALSE, /* partial_inplace */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24, /* type */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
478 TRUE, /* pc_relative */
480 complain_overflow_signed, /* complain_on_overflow */
481 bfd_elf_generic_reloc, /* special_function */
482 "R_PPC_PLTREL24", /* name */
483 FALSE, /* partial_inplace */
485 0x3fffffc, /* dst_mask */
486 TRUE), /* pcrel_offset */
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY, /* type */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
497 FALSE, /* pc_relative */
499 complain_overflow_dont, /* complain_on_overflow */
500 bfd_elf_generic_reloc, /* special_function */
501 "R_PPC_COPY", /* name */
502 FALSE, /* partial_inplace */
505 FALSE), /* pcrel_offset */
507 /* Like R_PPC_ADDR32, but used when setting global offset table
509 HOWTO (R_PPC_GLOB_DAT, /* type */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
513 FALSE, /* pc_relative */
515 complain_overflow_dont, /* complain_on_overflow */
516 bfd_elf_generic_reloc, /* special_function */
517 "R_PPC_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
520 0xffffffff, /* dst_mask */
521 FALSE), /* pcrel_offset */
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT, /* type */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE, /* pc_relative */
530 complain_overflow_dont, /* complain_on_overflow */
531 bfd_elf_generic_reloc, /* special_function */
532 "R_PPC_JMP_SLOT", /* name */
533 FALSE, /* partial_inplace */
536 FALSE), /* pcrel_offset */
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
541 HOWTO (R_PPC_RELATIVE, /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 FALSE, /* pc_relative */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_RELATIVE", /* name */
550 FALSE, /* partial_inplace */
552 0xffffffff, /* dst_mask */
553 FALSE), /* pcrel_offset */
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 TRUE, /* pc_relative */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
567 FALSE, /* partial_inplace */
569 0x3fffffc, /* dst_mask */
570 TRUE), /* pcrel_offset */
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE, /* pc_relative */
579 complain_overflow_dont, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC_UADDR32", /* name */
582 FALSE, /* partial_inplace */
584 0xffffffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16, /* type */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
592 FALSE, /* pc_relative */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_UADDR16", /* name */
597 FALSE, /* partial_inplace */
599 0xffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32, /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 TRUE, /* pc_relative */
609 complain_overflow_dont, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_REL32", /* name */
612 FALSE, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 TRUE), /* pcrel_offset */
617 /* 32-bit relocation to the symbol's procedure linkage table.
618 FIXME: not supported. */
619 HOWTO (R_PPC_PLT32, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 FALSE, /* pc_relative */
625 complain_overflow_dont, /* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_PPC_PLT32", /* name */
628 FALSE, /* partial_inplace */
631 FALSE), /* pcrel_offset */
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 FIXME: not supported. */
635 HOWTO (R_PPC_PLTREL32, /* type */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
639 TRUE, /* pc_relative */
641 complain_overflow_dont, /* complain_on_overflow */
642 bfd_elf_generic_reloc, /* special_function */
643 "R_PPC_PLTREL32", /* name */
644 FALSE, /* partial_inplace */
647 TRUE), /* pcrel_offset */
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
651 HOWTO (R_PPC_PLT16_LO, /* type */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE, /* pc_relative */
657 complain_overflow_dont, /* complain_on_overflow */
658 bfd_elf_generic_reloc, /* special_function */
659 "R_PPC_PLT16_LO", /* name */
660 FALSE, /* partial_inplace */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
667 HOWTO (R_PPC_PLT16_HI, /* type */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_dont, /* complain_on_overflow */
674 bfd_elf_generic_reloc, /* special_function */
675 "R_PPC_PLT16_HI", /* name */
676 FALSE, /* partial_inplace */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
683 HOWTO (R_PPC_PLT16_HA, /* type */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE, /* pc_relative */
689 complain_overflow_dont, /* complain_on_overflow */
690 ppc_elf_addr16_ha_reloc, /* special_function */
691 "R_PPC_PLT16_HA", /* name */
692 FALSE, /* partial_inplace */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
699 HOWTO (R_PPC_SDAREL16, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE, /* pc_relative */
705 complain_overflow_signed, /* complain_on_overflow */
706 bfd_elf_generic_reloc, /* special_function */
707 "R_PPC_SDAREL16", /* name */
708 FALSE, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
713 /* 16-bit section relative relocation. */
714 HOWTO (R_PPC_SECTOFF, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE, /* pc_relative */
720 complain_overflow_signed, /* complain_on_overflow */
721 bfd_elf_generic_reloc, /* special_function */
722 "R_PPC_SECTOFF", /* name */
723 FALSE, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
728 /* 16-bit lower half section relative relocation. */
729 HOWTO (R_PPC_SECTOFF_LO, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 FALSE, /* pc_relative */
735 complain_overflow_dont, /* complain_on_overflow */
736 bfd_elf_generic_reloc, /* special_function */
737 "R_PPC_SECTOFF_LO", /* name */
738 FALSE, /* partial_inplace */
740 0xffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
743 /* 16-bit upper half section relative relocation. */
744 HOWTO (R_PPC_SECTOFF_HI, /* type */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE, /* pc_relative */
750 complain_overflow_dont, /* complain_on_overflow */
751 bfd_elf_generic_reloc, /* special_function */
752 "R_PPC_SECTOFF_HI", /* name */
753 FALSE, /* partial_inplace */
755 0xffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
758 /* 16-bit upper half adjusted section relative relocation. */
759 HOWTO (R_PPC_SECTOFF_HA, /* type */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
763 FALSE, /* pc_relative */
765 complain_overflow_dont, /* complain_on_overflow */
766 ppc_elf_addr16_ha_reloc, /* special_function */
767 "R_PPC_SECTOFF_HA", /* name */
768 FALSE, /* partial_inplace */
770 0xffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
773 /* Marker relocs for TLS. */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE, /* pc_relative */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC_TLS", /* name */
783 FALSE, /* partial_inplace */
786 FALSE), /* pcrel_offset */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
792 FALSE, /* pc_relative */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE, /* partial_inplace */
800 FALSE), /* pcrel_offset */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
806 FALSE, /* pc_relative */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE, /* partial_inplace */
814 FALSE), /* pcrel_offset */
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32,
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_DTPMOD32", /* name */
827 FALSE, /* partial_inplace */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32,
837 2, /* size (0 = byte, 1 = short, 2 = long) */
839 FALSE, /* pc_relative */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE, /* partial_inplace */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16,
852 1, /* size (0 = byte, 1 = short, 2 = long) */
854 FALSE, /* pc_relative */
856 complain_overflow_signed, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16", /* name */
859 FALSE, /* partial_inplace */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO,
867 1, /* size (0 = byte, 1 = short, 2 = long) */
869 FALSE, /* pc_relative */
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
874 FALSE, /* partial_inplace */
876 0xffff, /* dst_mask */
877 FALSE), /* pcrel_offset */
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI,
882 1, /* size (0 = byte, 1 = short, 2 = long) */
884 FALSE, /* pc_relative */
886 complain_overflow_dont, /* complain_on_overflow */
887 ppc_elf_unhandled_reloc, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
889 FALSE, /* partial_inplace */
891 0xffff, /* dst_mask */
892 FALSE), /* pcrel_offset */
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA,
897 1, /* size (0 = byte, 1 = short, 2 = long) */
899 FALSE, /* pc_relative */
901 complain_overflow_dont, /* complain_on_overflow */
902 ppc_elf_unhandled_reloc, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
904 FALSE, /* partial_inplace */
906 0xffff, /* dst_mask */
907 FALSE), /* pcrel_offset */
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32,
913 2, /* size (0 = byte, 1 = short, 2 = long) */
915 FALSE, /* pc_relative */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE, /* partial_inplace */
922 0xffffffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16,
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO,
943 1, /* size (0 = byte, 1 = short, 2 = long) */
945 FALSE, /* pc_relative */
947 complain_overflow_dont, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
950 FALSE, /* partial_inplace */
952 0xffff, /* dst_mask */
953 FALSE), /* pcrel_offset */
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI,
958 1, /* size (0 = byte, 1 = short, 2 = long) */
960 FALSE, /* pc_relative */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE, /* partial_inplace */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA,
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16,
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE, /* pc_relative */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
997 FALSE, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO,
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 FALSE, /* pc_relative */
1009 complain_overflow_dont, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
1012 FALSE, /* partial_inplace */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 FALSE, /* pc_relative */
1024 complain_overflow_dont, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE, /* partial_inplace */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 FALSE, /* pc_relative */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE, /* partial_inplace */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1050 HOWTO (R_PPC_GOT_TLSLD16,
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE, /* pc_relative */
1056 complain_overflow_signed, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
1059 FALSE, /* partial_inplace */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO,
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 FALSE, /* pc_relative */
1071 complain_overflow_dont, /* complain_on_overflow */
1072 ppc_elf_unhandled_reloc, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
1074 FALSE, /* partial_inplace */
1076 0xffff, /* dst_mask */
1077 FALSE), /* pcrel_offset */
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 FALSE, /* pc_relative */
1086 complain_overflow_dont, /* complain_on_overflow */
1087 ppc_elf_unhandled_reloc, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
1089 FALSE, /* partial_inplace */
1091 0xffff, /* dst_mask */
1092 FALSE), /* pcrel_offset */
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE, /* pc_relative */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE, /* partial_inplace */
1106 0xffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16,
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE, /* pc_relative */
1117 complain_overflow_signed, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
1120 FALSE, /* partial_inplace */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO,
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE, /* pc_relative */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE, /* partial_inplace */
1137 0xffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 FALSE, /* pc_relative */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE, /* partial_inplace */
1152 0xffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 FALSE, /* pc_relative */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE, /* partial_inplace */
1167 0xffff, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16,
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_signed, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE, /* partial_inplace */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO,
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE, /* pc_relative */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE, /* partial_inplace */
1198 0xffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE, /* partial_inplace */
1213 0xffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE, /* pc_relative */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE, /* partial_inplace */
1228 0xffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32, /* type */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE, /* pc_relative */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 bfd_elf_generic_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE, /* partial_inplace */
1246 0xffffffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16, /* type */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1254 FALSE, /* pc_relative */
1256 complain_overflow_signed, /* complain_on_overflow */
1257 bfd_elf_generic_reloc, /* special_function */
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE, /* partial_inplace */
1261 0xffff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont,/* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE, /* partial_inplace */
1276 0xffff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI, /* 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 bfd_elf_generic_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE, /* partial_inplace */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1297 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_dont, /* complain_on_overflow */
1304 ppc_elf_addr16_ha_reloc, /* special_function */
1305 "R_PPC_EMB_NADDR16_HA", /* 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 .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16, /* 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_SDAI16", /* name */
1323 FALSE, /* partial_inplace */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE, /* pc_relative */
1337 complain_overflow_signed, /* complain_on_overflow */
1338 bfd_elf_generic_reloc, /* special_function */
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE, /* partial_inplace */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1349 1, /* 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_SDA2REL", /* name */
1356 FALSE, /* partial_inplace */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21, /* type */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE, /* pc_relative */
1370 complain_overflow_signed, /* complain_on_overflow */
1371 bfd_elf_generic_reloc, /* special_function */
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE, /* partial_inplace */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA, /* type */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE, /* pc_relative */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE, /* partial_inplace */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8, /* type */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 TRUE, /* pc_relative */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE, /* partial_inplace */
1414 0xff, /* dst_mask */
1415 TRUE), /* pcrel_offset */
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15, /* type */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1422 TRUE, /* pc_relative */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE, /* partial_inplace */
1429 0xfe, /* dst_mask */
1430 TRUE), /* pcrel_offset */
1432 /* A relative 24 bit branch. */
1433 HOWTO (R_PPC_VLE_REL24, /* type */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1437 TRUE, /* pc_relative */
1439 complain_overflow_signed, /* complain_on_overflow */
1440 bfd_elf_generic_reloc, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE, /* partial_inplace */
1444 0x1fffffe, /* dst_mask */
1445 TRUE), /* pcrel_offset */
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A, /* type */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
1452 FALSE, /* pc_relative */
1454 complain_overflow_dont, /* complain_on_overflow */
1455 bfd_elf_generic_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1459 0x1f007ff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D, /* type */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
1467 FALSE, /* pc_relative */
1469 complain_overflow_dont, /* complain_on_overflow */
1470 bfd_elf_generic_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1474 0x1f07ff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A, /* type */
1479 16, /* rightshift */
1480 2, /* size (0 = byte, 1 = short, 2 = long) */
1482 FALSE, /* pc_relative */
1484 complain_overflow_dont, /* complain_on_overflow */
1485 bfd_elf_generic_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1489 0x1f007ff, /* dst_mask */
1490 FALSE), /* pcrel_offset */
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D, /* type */
1494 16, /* rightshift */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1497 FALSE, /* pc_relative */
1499 complain_overflow_dont, /* complain_on_overflow */
1500 bfd_elf_generic_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1504 0x1f07ff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A, /* type */
1509 16, /* rightshift */
1510 2, /* size (0 = byte, 1 = short, 2 = long) */
1512 FALSE, /* pc_relative */
1514 complain_overflow_dont, /* complain_on_overflow */
1515 bfd_elf_generic_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1519 0x1f007ff, /* dst_mask */
1520 FALSE), /* pcrel_offset */
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D, /* type */
1524 16, /* rightshift */
1525 2, /* size (0 = byte, 1 = short, 2 = long) */
1527 FALSE, /* pc_relative */
1529 complain_overflow_dont, /* complain_on_overflow */
1530 bfd_elf_generic_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1534 0x1f07ff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1544 FALSE, /* pc_relative */
1546 complain_overflow_signed, /* complain_on_overflow */
1547 bfd_elf_generic_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 FALSE, /* pc_relative */
1561 complain_overflow_dont, /* complain_on_overflow */
1562 bfd_elf_generic_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1566 0xffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE, /* pc_relative */
1576 complain_overflow_dont, /* complain_on_overflow */
1577 bfd_elf_generic_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1581 0x1f007ff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1589 FALSE, /* pc_relative */
1591 complain_overflow_dont, /* complain_on_overflow */
1592 bfd_elf_generic_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1596 0x1f07ff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1601 16, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1604 FALSE, /* pc_relative */
1606 complain_overflow_dont, /* complain_on_overflow */
1607 bfd_elf_generic_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1611 0x1f007ff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1616 16, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1619 FALSE, /* pc_relative */
1621 complain_overflow_dont, /* complain_on_overflow */
1622 bfd_elf_generic_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1626 0x1f07ff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1631 16, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 FALSE, /* pc_relative */
1636 complain_overflow_dont, /* complain_on_overflow */
1637 bfd_elf_generic_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1641 0x1f007ff, /* dst_mask */
1642 FALSE), /* pcrel_offset */
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1646 16, /* rightshift */
1647 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 FALSE, /* pc_relative */
1651 complain_overflow_dont, /* complain_on_overflow */
1652 bfd_elf_generic_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1656 0x1f07ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1659 HOWTO (R_PPC_IRELATIVE, /* type */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_dont, /* complain_on_overflow */
1666 bfd_elf_generic_reloc, /* special_function */
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffffffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16, /* type */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 TRUE, /* pc_relative */
1680 complain_overflow_signed, /* complain_on_overflow */
1681 bfd_elf_generic_reloc, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 TRUE), /* pcrel_offset */
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO, /* type */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 TRUE, /* pc_relative */
1695 complain_overflow_dont,/* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI, /* type */
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 TRUE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_HI", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1718 /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 TRUE, /* pc_relative */
1726 complain_overflow_dont, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE, /* partial_inplace */
1731 0xffff, /* dst_mask */
1732 TRUE), /* pcrel_offset */
1734 /* GNU extension to record C++ vtable hierarchy. */
1735 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1737 0, /* size (0 = byte, 1 = short, 2 = long) */
1739 FALSE, /* pc_relative */
1741 complain_overflow_dont, /* complain_on_overflow */
1742 NULL, /* special_function */
1743 "R_PPC_GNU_VTINHERIT", /* name */
1744 FALSE, /* partial_inplace */
1747 FALSE), /* pcrel_offset */
1749 /* GNU extension to record C++ vtable member usage. */
1750 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1752 0, /* size (0 = byte, 1 = short, 2 = long) */
1754 FALSE, /* pc_relative */
1756 complain_overflow_dont, /* complain_on_overflow */
1757 NULL, /* special_function */
1758 "R_PPC_GNU_VTENTRY", /* name */
1759 FALSE, /* partial_inplace */
1762 FALSE), /* pcrel_offset */
1764 /* Phony reloc to handle AIX style TOC entries. */
1765 HOWTO (R_PPC_TOC16, /* type */
1767 1, /* size (0 = byte, 1 = short, 2 = long) */
1769 FALSE, /* pc_relative */
1771 complain_overflow_signed, /* complain_on_overflow */
1772 bfd_elf_generic_reloc, /* special_function */
1773 "R_PPC_TOC16", /* name */
1774 FALSE, /* partial_inplace */
1776 0xffff, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1780 /* External 32-bit PPC structure for PRPSINFO. This structure is
1781 ABI-defined, thus we choose to use char arrays here in order to
1782 avoid dealing with different types in different architectures.
1784 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1785 most non-PPC architectures use `short int'.
1787 This structure will ultimately be written in the corefile's note
1788 section, as the PRPSINFO. */
1790 struct elf_external_ppc_linux_prpsinfo32
1792 char pr_state; /* Numeric process state. */
1793 char pr_sname; /* Char for pr_state. */
1794 char pr_zomb; /* Zombie. */
1795 char pr_nice; /* Nice val. */
1796 char pr_flag[4]; /* Flags. */
1803 char pr_fname[16]; /* Filename of executable. */
1804 char pr_psargs[80]; /* Initial part of arg list. */
1807 /* Helper macro to swap (properly handling endianess) things from the
1808 `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1811 Note that FROM should be a pointer, and TO should be the explicit type. */
1813 #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1816 H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1817 H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1818 H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1819 H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1820 H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1821 H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1822 H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1823 H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1824 H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1825 H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1826 H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1827 strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1828 strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1832 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1835 ppc_elf_howto_init (void)
1837 unsigned int i, type;
1840 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1843 type = ppc_elf_howto_raw[i].type;
1844 if (type >= (sizeof (ppc_elf_howto_table)
1845 / sizeof (ppc_elf_howto_table[0])))
1847 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1851 static reloc_howto_type *
1852 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1853 bfd_reloc_code_real_type code)
1855 enum elf_ppc_reloc_type r;
1857 /* Initialize howto table if not already done. */
1858 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1859 ppc_elf_howto_init ();
1866 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1867 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1868 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1869 case BFD_RELOC_PPC64_ADDR16_DS:
1870 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1871 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1872 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1873 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1874 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1875 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1876 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1877 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1878 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1879 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1880 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1881 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1882 case BFD_RELOC_PPC64_GOT16_DS:
1883 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1884 case BFD_RELOC_PPC64_GOT16_LO_DS:
1885 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1886 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1887 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1888 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1889 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1890 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1891 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1892 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1893 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1894 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1895 case BFD_RELOC_PPC64_PLT16_LO_DS:
1896 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1897 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1898 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1899 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1900 case BFD_RELOC_PPC64_SECTOFF_DS:
1901 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1902 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1903 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1904 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1905 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1906 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1907 case BFD_RELOC_PPC64_TOC16_DS:
1908 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1909 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1910 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1911 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1912 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1913 case BFD_RELOC_PPC64_TPREL16_DS:
1914 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1915 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1916 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1917 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1918 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1919 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1920 case BFD_RELOC_PPC64_DTPREL16_DS:
1921 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1922 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1923 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1924 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1925 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1926 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1943 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1948 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1949 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1950 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1951 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1952 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1953 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1954 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1955 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1956 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1957 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1958 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1959 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1960 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1961 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1962 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1963 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1964 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1965 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1966 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1967 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1968 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1969 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1970 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1971 r = R_PPC_VLE_SDAREL_LO16A;
1973 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1974 r = R_PPC_VLE_SDAREL_LO16D;
1976 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1977 r = R_PPC_VLE_SDAREL_HI16A;
1979 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1980 r = R_PPC_VLE_SDAREL_HI16D;
1982 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1983 r = R_PPC_VLE_SDAREL_HA16A;
1985 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1986 r = R_PPC_VLE_SDAREL_HA16D;
1988 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1989 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1990 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1991 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1992 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1993 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1996 return ppc_elf_howto_table[r];
1999 static reloc_howto_type *
2000 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2006 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2008 if (ppc_elf_howto_raw[i].name != NULL
2009 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2010 return &ppc_elf_howto_raw[i];
2015 /* Set the howto pointer for a PowerPC ELF reloc. */
2018 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2020 Elf_Internal_Rela *dst)
2022 /* Initialize howto table if not already done. */
2023 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2024 ppc_elf_howto_init ();
2026 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
2027 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
2029 /* Just because the above assert didn't trigger doesn't mean that
2030 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2031 if (!cache_ptr->howto)
2033 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2034 abfd, ELF32_R_TYPE (dst->r_info));
2035 bfd_set_error (bfd_error_bad_value);
2037 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2041 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2043 static bfd_reloc_status_type
2044 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2045 arelent *reloc_entry,
2047 void *data ATTRIBUTE_UNUSED,
2048 asection *input_section,
2050 char **error_message ATTRIBUTE_UNUSED)
2054 if (output_bfd != NULL)
2056 reloc_entry->address += input_section->output_offset;
2057 return bfd_reloc_ok;
2060 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2061 return bfd_reloc_outofrange;
2063 if (bfd_is_com_section (symbol->section))
2066 relocation = symbol->value;
2068 relocation += symbol->section->output_section->vma;
2069 relocation += symbol->section->output_offset;
2070 relocation += reloc_entry->addend;
2071 if (reloc_entry->howto->pc_relative)
2072 relocation -= reloc_entry->address;
2074 reloc_entry->addend += (relocation & 0x8000) << 1;
2076 return bfd_reloc_continue;
2079 static bfd_reloc_status_type
2080 ppc_elf_unhandled_reloc (bfd *abfd,
2081 arelent *reloc_entry,
2084 asection *input_section,
2086 char **error_message)
2088 /* If this is a relocatable link (output_bfd test tells us), just
2089 call the generic function. Any adjustment will be done at final
2091 if (output_bfd != NULL)
2092 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2093 input_section, output_bfd, error_message);
2095 if (error_message != NULL)
2097 static char buf[60];
2098 sprintf (buf, _("generic linker can't handle %s"),
2099 reloc_entry->howto->name);
2100 *error_message = buf;
2102 return bfd_reloc_dangerous;
2105 /* Sections created by the linker. */
2107 typedef struct elf_linker_section
2109 /* Pointer to the bfd section. */
2113 /* Associated bss section name. */
2114 const char *bss_name;
2115 /* Associated symbol name. */
2116 const char *sym_name;
2117 /* Associated symbol. */
2118 struct elf_link_hash_entry *sym;
2119 } elf_linker_section_t;
2121 /* Linked list of allocated pointer entries. This hangs off of the
2122 symbol lists, and provides allows us to return different pointers,
2123 based on different addend's. */
2125 typedef struct elf_linker_section_pointers
2127 /* next allocated pointer for this symbol */
2128 struct elf_linker_section_pointers *next;
2129 /* offset of pointer from beginning of section */
2133 /* which linker section this is */
2134 elf_linker_section_t *lsect;
2135 } elf_linker_section_pointers_t;
2137 struct ppc_elf_obj_tdata
2139 struct elf_obj_tdata elf;
2141 /* A mapping from local symbols to offsets into the various linker
2142 sections added. This is index by the symbol index. */
2143 elf_linker_section_pointers_t **linker_section_pointers;
2145 /* Flags used to auto-detect plt type. */
2146 unsigned int makes_plt_call : 1;
2147 unsigned int has_rel16 : 1;
2150 #define ppc_elf_tdata(bfd) \
2151 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2153 #define elf_local_ptr_offsets(bfd) \
2154 (ppc_elf_tdata (bfd)->linker_section_pointers)
2156 #define is_ppc_elf(bfd) \
2157 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2158 && elf_object_id (bfd) == PPC32_ELF_DATA)
2160 /* Override the generic function because we store some extras. */
2163 ppc_elf_mkobject (bfd *abfd)
2165 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2169 /* Fix bad default arch selected for a 32 bit input bfd when the
2170 default is 64 bit. */
2173 ppc_elf_object_p (bfd *abfd)
2175 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2177 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2179 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2181 /* Relies on arch after 64 bit default being 32 bit default. */
2182 abfd->arch_info = abfd->arch_info->next;
2183 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2189 /* Function to set whether a module needs the -mrelocatable bit set. */
2192 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2194 BFD_ASSERT (!elf_flags_init (abfd)
2195 || elf_elfheader (abfd)->e_flags == flags);
2197 elf_elfheader (abfd)->e_flags = flags;
2198 elf_flags_init (abfd) = TRUE;
2202 /* Support for core dump NOTE sections. */
2205 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2210 switch (note->descsz)
2215 case 268: /* Linux/PPC. */
2217 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2220 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2229 /* Make a ".reg/999" section. */
2230 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2231 size, note->descpos + offset);
2235 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2237 switch (note->descsz)
2242 case 128: /* Linux/PPC elf_prpsinfo. */
2243 elf_tdata (abfd)->core->pid
2244 = bfd_get_32 (abfd, note->descdata + 16);
2245 elf_tdata (abfd)->core->program
2246 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2247 elf_tdata (abfd)->core->command
2248 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2251 /* Note that for some reason, a spurious space is tacked
2252 onto the end of the args in some (at least one anyway)
2253 implementations, so strip it off if it exists. */
2256 char *command = elf_tdata (abfd)->core->command;
2257 int n = strlen (command);
2259 if (0 < n && command[n - 1] == ' ')
2260 command[n - 1] = '\0';
2267 elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2268 const struct elf_internal_linux_prpsinfo *prpsinfo)
2270 struct elf_external_ppc_linux_prpsinfo32 data;
2272 memset (&data, 0, sizeof (data));
2273 PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2275 return elfcore_write_note (abfd, buf, bufsiz,
2276 "CORE", NT_PRPSINFO, &data, sizeof (data));
2280 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2292 va_start (ap, note_type);
2293 memset (data, 0, sizeof (data));
2294 strncpy (data + 32, va_arg (ap, const char *), 16);
2295 strncpy (data + 48, va_arg (ap, const char *), 80);
2297 return elfcore_write_note (abfd, buf, bufsiz,
2298 "CORE", note_type, data, sizeof (data));
2309 va_start (ap, note_type);
2310 memset (data, 0, 72);
2311 pid = va_arg (ap, long);
2312 bfd_put_32 (abfd, pid, data + 24);
2313 cursig = va_arg (ap, int);
2314 bfd_put_16 (abfd, cursig, data + 12);
2315 greg = va_arg (ap, const void *);
2316 memcpy (data + 72, greg, 192);
2317 memset (data + 264, 0, 4);
2319 return elfcore_write_note (abfd, buf, bufsiz,
2320 "CORE", note_type, data, sizeof (data));
2326 ppc_elf_lookup_section_flags (char *flag_name)
2329 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2335 /* Add the VLE flag if required. */
2338 ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2340 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2341 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2342 shdr->sh_flags |= SHF_PPC_VLE;
2347 /* Return address for Ith PLT stub in section PLT, for relocation REL
2348 or (bfd_vma) -1 if it should not be included. */
2351 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2352 const asection *plt ATTRIBUTE_UNUSED,
2355 return rel->address;
2358 /* Handle a PowerPC specific section when reading an object file. This
2359 is called when bfd_section_from_shdr finds a section with an unknown
2363 ppc_elf_section_from_shdr (bfd *abfd,
2364 Elf_Internal_Shdr *hdr,
2371 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2374 newsect = hdr->bfd_section;
2375 flags = bfd_get_section_flags (abfd, newsect);
2376 if (hdr->sh_flags & SHF_EXCLUDE)
2377 flags |= SEC_EXCLUDE;
2379 if (hdr->sh_type == SHT_ORDERED)
2380 flags |= SEC_SORT_ENTRIES;
2382 bfd_set_section_flags (abfd, newsect, flags);
2386 /* Set up any other section flags and such that may be necessary. */
2389 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2390 Elf_Internal_Shdr *shdr,
2393 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2394 shdr->sh_type = SHT_ORDERED;
2399 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2400 need to bump up the number of section headers. */
2403 ppc_elf_additional_program_headers (bfd *abfd,
2404 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2409 s = bfd_get_section_by_name (abfd, ".sbss2");
2410 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2413 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2414 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2420 /* Modify the segment map for VLE executables. */
2423 ppc_elf_modify_segment_map (bfd *abfd,
2424 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2426 struct elf_segment_map *m, *n;
2429 bfd_boolean sect0_vle, sectj_vle;
2431 /* At this point in the link, output sections have already been sorted by
2432 LMA and assigned to segments. All that is left to do is to ensure
2433 there is no mixing of VLE & non-VLE sections in a text segment.
2434 If we find that case, we split the segment.
2435 We maintain the original output section order. */
2437 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2442 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2443 for (j = 1; j < m->count; ++j)
2445 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2447 if (sectj_vle != sect0_vle)
2453 /* sections 0..j-1 stay in this (current) segment,
2454 the remainder are put in a new segment.
2455 The scan resumes with the new segment. */
2457 /* Fix the new segment. */
2458 amt = sizeof (struct elf_segment_map);
2459 amt += (m->count - j - 1) * sizeof (asection *);
2460 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2464 n->p_type = PT_LOAD;
2465 n->p_flags = PF_X | PF_R;
2467 n->p_flags |= PF_PPC_VLE;
2468 n->count = m->count - j;
2469 for (k = 0; k < n->count; ++k)
2471 n->sections[k] = m->sections[j+k];
2472 m->sections[j+k] = NULL;
2477 /* Fix the current segment */
2484 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2485 .PPC.EMB.sbss0 a normal section, and not a bss section so
2486 that the linker doesn't crater when trying to make more than
2489 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2491 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2492 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2493 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2494 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2495 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2496 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2497 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2498 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2499 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2500 { NULL, 0, 0, 0, 0 }
2503 /* This is what we want for new plt/got. */
2504 static struct bfd_elf_special_section ppc_alt_plt =
2505 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2507 static const struct bfd_elf_special_section *
2508 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2510 const struct bfd_elf_special_section *ssect;
2512 /* See if this is one of the special sections. */
2513 if (sec->name == NULL)
2516 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2520 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2521 ssect = &ppc_alt_plt;
2525 return _bfd_elf_get_sec_type_attr (abfd, sec);
2528 /* Very simple linked list structure for recording apuinfo values. */
2529 typedef struct apuinfo_list
2531 struct apuinfo_list *next;
2532 unsigned long value;
2536 static apuinfo_list *head;
2537 static bfd_boolean apuinfo_set;
2540 apuinfo_list_init (void)
2543 apuinfo_set = FALSE;
2547 apuinfo_list_add (unsigned long value)
2549 apuinfo_list *entry = head;
2551 while (entry != NULL)
2553 if (entry->value == value)
2555 entry = entry->next;
2558 entry = bfd_malloc (sizeof (* entry));
2562 entry->value = value;
2568 apuinfo_list_length (void)
2570 apuinfo_list *entry;
2571 unsigned long count;
2573 for (entry = head, count = 0;
2575 entry = entry->next)
2581 static inline unsigned long
2582 apuinfo_list_element (unsigned long number)
2584 apuinfo_list * entry;
2588 entry = entry->next)
2591 return entry ? entry->value : 0;
2595 apuinfo_list_finish (void)
2597 apuinfo_list *entry;
2599 for (entry = head; entry;)
2601 apuinfo_list *next = entry->next;
2609 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2610 #define APUINFO_LABEL "APUinfo"
2612 /* Scan the input BFDs and create a linked list of
2613 the APUinfo values that will need to be emitted. */
2616 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2620 char *buffer = NULL;
2621 bfd_size_type largest_input_size = 0;
2623 unsigned long length;
2624 const char *error_message = NULL;
2626 if (link_info == NULL)
2629 apuinfo_list_init ();
2631 /* Read in the input sections contents. */
2632 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2634 unsigned long datum;
2636 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2640 error_message = _("corrupt %s section in %B");
2641 length = asec->size;
2646 if (largest_input_size < asec->size)
2650 largest_input_size = asec->size;
2651 buffer = bfd_malloc (largest_input_size);
2656 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2657 || (bfd_bread (buffer, length, ibfd) != length))
2659 error_message = _("unable to read in %s section from %B");
2663 /* Verify the contents of the header. Note - we have to
2664 extract the values this way in order to allow for a
2665 host whose endian-ness is different from the target. */
2666 datum = bfd_get_32 (ibfd, buffer);
2667 if (datum != sizeof APUINFO_LABEL)
2670 datum = bfd_get_32 (ibfd, buffer + 8);
2674 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2677 /* Get the number of bytes used for apuinfo entries. */
2678 datum = bfd_get_32 (ibfd, buffer + 4);
2679 if (datum + 20 != length)
2682 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2683 for (i = 0; i < datum; i += 4)
2684 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2687 error_message = NULL;
2691 /* Compute the size of the output section. */
2692 unsigned num_entries = apuinfo_list_length ();
2694 /* Set the output section size, if it exists. */
2695 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2697 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2700 error_message = _("warning: unable to set size of %s section in %B");
2709 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2712 /* Prevent the output section from accumulating the input sections'
2713 contents. We have already stored this in our linked list structure. */
2716 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2717 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2719 bfd_byte *contents ATTRIBUTE_UNUSED)
2721 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2724 /* Finally we can generate the output section. */
2727 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2732 unsigned num_entries;
2733 bfd_size_type length;
2735 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2742 length = asec->size;
2746 buffer = bfd_malloc (length);
2749 (*_bfd_error_handler)
2750 (_("failed to allocate space for new APUinfo section."));
2754 /* Create the apuinfo header. */
2755 num_entries = apuinfo_list_length ();
2756 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2757 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2758 bfd_put_32 (abfd, 0x2, buffer + 8);
2759 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2762 for (i = 0; i < num_entries; i++)
2764 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2768 if (length != asec->size)
2769 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2771 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2772 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2776 apuinfo_list_finish ();
2780 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2782 bfd_byte buf[GLINK_ENTRY_SIZE];
2784 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2787 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2788 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2789 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2790 && bfd_get_32 (abfd, buf + 12) == BCTR);
2794 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2796 bfd_vma vma = *(bfd_vma *) ptr;
2797 return ((section->flags & SEC_ALLOC) != 0
2798 && section->vma <= vma
2799 && vma < section->vma + section->size);
2803 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2804 long dynsymcount, asymbol **dynsyms,
2807 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2808 asection *plt, *relplt, *dynamic, *glink;
2809 bfd_vma glink_vma = 0;
2810 bfd_vma resolv_vma = 0;
2821 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2824 if (dynsymcount <= 0)
2827 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2831 plt = bfd_get_section_by_name (abfd, ".plt");
2835 /* Call common code to handle old-style executable PLTs. */
2836 if (elf_section_flags (plt) & SHF_EXECINSTR)
2837 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2838 dynsymcount, dynsyms, ret);
2840 /* If this object was prelinked, the prelinker stored the address
2841 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2842 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2843 if (dynamic != NULL)
2845 bfd_byte *dynbuf, *extdyn, *extdynend;
2847 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2849 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2852 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2853 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2856 extdynend = extdyn + dynamic->size;
2857 for (; extdyn < extdynend; extdyn += extdynsize)
2859 Elf_Internal_Dyn dyn;
2860 (*swap_dyn_in) (abfd, extdyn, &dyn);
2862 if (dyn.d_tag == DT_NULL)
2865 if (dyn.d_tag == DT_PPC_GOT)
2867 unsigned int g_o_t = dyn.d_un.d_val;
2868 asection *got = bfd_get_section_by_name (abfd, ".got");
2870 && bfd_get_section_contents (abfd, got, buf,
2871 g_o_t - got->vma + 4, 4))
2872 glink_vma = bfd_get_32 (abfd, buf);
2879 /* Otherwise we read the first plt entry. */
2882 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2883 glink_vma = bfd_get_32 (abfd, buf);
2889 /* The .glink section usually does not survive the final
2890 link; search for the section (usually .text) where the
2891 glink stubs now reside. */
2892 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2896 /* Determine glink PLT resolver by reading the relative branch
2897 from the first glink stub. */
2898 if (bfd_get_section_contents (abfd, glink, buf,
2899 glink_vma - glink->vma, 4))
2901 unsigned int insn = bfd_get_32 (abfd, buf);
2903 /* The first glink stub may either branch to the resolver ... */
2905 if ((insn & ~0x3fffffc) == 0)
2906 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2908 /* ... or fall through a bunch of NOPs. */
2909 else if ((insn ^ B ^ NOP) == 0)
2911 bfd_get_section_contents (abfd, glink, buf,
2912 glink_vma - glink->vma + i, 4);
2914 if (bfd_get_32 (abfd, buf) != NOP)
2916 resolv_vma = glink_vma + i;
2921 count = relplt->size / sizeof (Elf32_External_Rela);
2922 stub_vma = glink_vma - (bfd_vma) count * 16;
2923 /* If the stubs are those for -shared/-pie then we might have
2924 multiple stubs for each plt entry. If that is the case then
2925 there is no way to associate stubs with their plt entries short
2926 of figuring out the GOT pointer value used in the stub. */
2927 if (!is_nonpic_glink_stub (abfd, glink,
2928 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2931 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2932 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2935 size = count * sizeof (asymbol);
2936 p = relplt->relocation;
2937 for (i = 0; i < count; i++, p++)
2939 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2941 size += sizeof ("+0x") - 1 + 8;
2944 size += sizeof (asymbol) + sizeof ("__glink");
2947 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2949 s = *ret = bfd_malloc (size);
2953 names = (char *) (s + count + 1 + (resolv_vma != 0));
2954 p = relplt->relocation;
2955 for (i = 0; i < count; i++, p++)
2959 *s = **p->sym_ptr_ptr;
2960 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2961 we are defining a symbol, ensure one of them is set. */
2962 if ((s->flags & BSF_LOCAL) == 0)
2963 s->flags |= BSF_GLOBAL;
2964 s->flags |= BSF_SYNTHETIC;
2966 s->value = stub_vma - glink->vma;
2969 len = strlen ((*p->sym_ptr_ptr)->name);
2970 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2974 memcpy (names, "+0x", sizeof ("+0x") - 1);
2975 names += sizeof ("+0x") - 1;
2976 bfd_sprintf_vma (abfd, names, p->addend);
2977 names += strlen (names);
2979 memcpy (names, "@plt", sizeof ("@plt"));
2980 names += sizeof ("@plt");
2985 /* Add a symbol at the start of the glink branch table. */
2986 memset (s, 0, sizeof *s);
2988 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2990 s->value = glink_vma - glink->vma;
2992 memcpy (names, "__glink", sizeof ("__glink"));
2993 names += sizeof ("__glink");
2999 /* Add a symbol for the glink PLT resolver. */
3000 memset (s, 0, sizeof *s);
3002 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3004 s->value = resolv_vma - glink->vma;
3006 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3007 names += sizeof ("__glink_PLTresolve");
3015 /* The following functions are specific to the ELF linker, while
3016 functions above are used generally. They appear in this file more
3017 or less in the order in which they are called. eg.
3018 ppc_elf_check_relocs is called early in the link process,
3019 ppc_elf_finish_dynamic_sections is one of the last functions
3022 /* Track PLT entries needed for a given symbol. We might need more
3023 than one glink entry per symbol when generating a pic binary. */
3026 struct plt_entry *next;
3028 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3029 This field stores the offset into .got2 used to initialise the
3030 GOT pointer reg. It will always be at least 32768. (Current
3031 gcc always uses an offset of 32768, but ld -r will pack .got2
3032 sections together resulting in larger offsets). */
3035 /* The .got2 section. */
3038 /* PLT refcount or offset. */
3041 bfd_signed_vma refcount;
3045 /* .glink stub offset. */
3046 bfd_vma glink_offset;
3049 /* Of those relocs that might be copied as dynamic relocs, this function
3050 selects those that must be copied when linking a shared library,
3051 even when the symbol is local. */
3054 must_be_dyn_reloc (struct bfd_link_info *info,
3055 enum elf_ppc_reloc_type r_type)
3064 case R_PPC_REL14_BRTAKEN:
3065 case R_PPC_REL14_BRNTAKEN:
3071 case R_PPC_TPREL16_LO:
3072 case R_PPC_TPREL16_HI:
3073 case R_PPC_TPREL16_HA:
3074 return !info->executable;
3078 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3079 copying dynamic variables from a shared lib into an app's dynbss
3080 section, and instead use a dynamic relocation to point into the
3082 #define ELIMINATE_COPY_RELOCS 1
3084 /* Used to track dynamic relocations for local symbols. */
3085 struct ppc_dyn_relocs
3087 struct ppc_dyn_relocs *next;
3089 /* The input section of the reloc. */
3092 /* Total number of relocs copied for the input section. */
3093 unsigned int count : 31;
3095 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3096 unsigned int ifunc : 1;
3099 /* PPC ELF linker hash entry. */
3101 struct ppc_elf_link_hash_entry
3103 struct elf_link_hash_entry elf;
3105 /* If this symbol is used in the linker created sections, the processor
3106 specific backend uses this field to map the field into the offset
3107 from the beginning of the section. */
3108 elf_linker_section_pointers_t *linker_section_pointer;
3110 /* Track dynamic relocs copied for this symbol. */
3111 struct elf_dyn_relocs *dyn_relocs;
3113 /* Contexts in which symbol is used in the GOT (or TOC).
3114 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3115 corresponding relocs are encountered during check_relocs.
3116 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3117 indicate the corresponding GOT entry type is not needed. */
3118 #define TLS_GD 1 /* GD reloc. */
3119 #define TLS_LD 2 /* LD reloc. */
3120 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3121 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3122 #define TLS_TLS 16 /* Any TLS reloc. */
3123 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3124 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3127 /* Nonzero if we have seen a small data relocation referring to this
3129 unsigned char has_sda_refs;
3132 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3134 /* PPC ELF linker hash table. */
3136 struct ppc_elf_link_hash_table
3138 struct elf_link_hash_table elf;
3140 /* Various options passed from the linker. */
3141 struct ppc_elf_params *params;
3143 /* Short-cuts to get to dynamic linker sections. */
3155 elf_linker_section_t sdata[2];
3157 asection *glink_eh_frame;
3159 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3162 /* The .got.plt section (VxWorks only)*/
3165 /* Shortcut to __tls_get_addr. */
3166 struct elf_link_hash_entry *tls_get_addr;
3168 /* The bfd that forced an old-style PLT. */
3171 /* TLS local dynamic got entry handling. */
3173 bfd_signed_vma refcount;
3177 /* Offset of branch table to PltResolve function in glink. */
3178 bfd_vma glink_pltresolve;
3180 /* Size of reserved GOT entries. */
3181 unsigned int got_header_size;
3182 /* Non-zero if allocating the header left a gap. */
3183 unsigned int got_gap;
3185 /* The type of PLT we have chosen to use. */
3186 enum ppc_elf_plt_type plt_type;
3188 /* True if the target system is VxWorks. */
3189 unsigned int is_vxworks:1;
3191 /* The size of PLT entries. */
3193 /* The distance between adjacent PLT slots. */
3195 /* The size of the first PLT entry. */
3196 int plt_initial_entry_size;
3198 /* Small local sym cache. */
3199 struct sym_cache sym_cache;
3202 /* Rename some of the generic section flags to better document how they
3203 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3205 /* Nonzero if this section has TLS related relocations. */
3206 #define has_tls_reloc sec_flg0
3208 /* Nonzero if this section has a call to __tls_get_addr. */
3209 #define has_tls_get_addr_call sec_flg1
3211 /* Get the PPC ELF linker hash table from a link_info structure. */
3213 #define ppc_elf_hash_table(p) \
3214 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3215 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3217 /* Create an entry in a PPC ELF linker hash table. */
3219 static struct bfd_hash_entry *
3220 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3221 struct bfd_hash_table *table,
3224 /* Allocate the structure if it has not already been allocated by a
3228 entry = bfd_hash_allocate (table,
3229 sizeof (struct ppc_elf_link_hash_entry));
3234 /* Call the allocation method of the superclass. */
3235 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3238 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3239 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3240 ppc_elf_hash_entry (entry)->tls_mask = 0;
3241 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3247 /* Create a PPC ELF linker hash table. */
3249 static struct bfd_link_hash_table *
3250 ppc_elf_link_hash_table_create (bfd *abfd)
3252 struct ppc_elf_link_hash_table *ret;
3253 static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 12 };
3255 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3259 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3260 ppc_elf_link_hash_newfunc,
3261 sizeof (struct ppc_elf_link_hash_entry),
3268 ret->elf.init_plt_refcount.refcount = 0;
3269 ret->elf.init_plt_refcount.glist = NULL;
3270 ret->elf.init_plt_offset.offset = 0;
3271 ret->elf.init_plt_offset.glist = NULL;
3273 ret->params = &default_params;
3275 ret->sdata[0].name = ".sdata";
3276 ret->sdata[0].sym_name = "_SDA_BASE_";
3277 ret->sdata[0].bss_name = ".sbss";
3279 ret->sdata[1].name = ".sdata2";
3280 ret->sdata[1].sym_name = "_SDA2_BASE_";
3281 ret->sdata[1].bss_name = ".sbss2";
3283 ret->plt_entry_size = 12;
3284 ret->plt_slot_size = 8;
3285 ret->plt_initial_entry_size = 72;
3287 return &ret->elf.root;
3290 /* Hook linker params into hash table. */
3293 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3295 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3298 htab->params = params;
3301 /* Create .got and the related sections. */
3304 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3306 struct ppc_elf_link_hash_table *htab;
3310 if (!_bfd_elf_create_got_section (abfd, info))
3313 htab = ppc_elf_hash_table (info);
3314 htab->got = s = bfd_get_linker_section (abfd, ".got");
3318 if (htab->is_vxworks)
3320 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3326 /* The powerpc .got has a blrl instruction in it. Mark it
3328 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3329 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3330 if (!bfd_set_section_flags (abfd, s, flags))
3334 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3341 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3342 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3343 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3346 ppc_elf_create_linker_section (bfd *abfd,
3347 struct bfd_link_info *info,
3349 elf_linker_section_t *lsect)
3353 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3354 | SEC_LINKER_CREATED);
3356 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3361 /* Define the sym on the first section of this name. */
3362 s = bfd_get_section_by_name (abfd, lsect->name);
3364 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3365 if (lsect->sym == NULL)
3367 lsect->sym->root.u.def.value = 0x8000;
3372 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3374 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3378 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3379 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3380 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3383 || !bfd_set_section_alignment (abfd, s,
3384 htab->params->ppc476_workaround ? 6 : 4))
3387 if (!info->no_ld_generated_unwind_info)
3389 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3390 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3391 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3392 htab->glink_eh_frame = s;
3394 || !bfd_set_section_alignment (abfd, s, 2))
3398 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3399 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3402 || !bfd_set_section_alignment (abfd, s, 4))
3405 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3406 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3407 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3410 || ! bfd_set_section_alignment (abfd, s, 2))
3413 if (!ppc_elf_create_linker_section (abfd, info, 0,
3417 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3424 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3425 to output sections (just like _bfd_elf_create_dynamic_sections has
3426 to create .dynbss and .rela.bss). */
3429 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3431 struct ppc_elf_link_hash_table *htab;
3435 htab = ppc_elf_hash_table (info);
3437 if (htab->got == NULL
3438 && !ppc_elf_create_got (abfd, info))
3441 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3444 if (htab->glink == NULL
3445 && !ppc_elf_create_glink (abfd, info))
3448 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3449 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3450 SEC_ALLOC | SEC_LINKER_CREATED);
3457 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3458 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3459 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3460 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3463 || ! bfd_set_section_alignment (abfd, s, 2))
3467 if (htab->is_vxworks
3468 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3471 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3472 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3476 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3477 if (htab->plt_type == PLT_VXWORKS)
3478 /* The VxWorks PLT is a loaded section with contents. */
3479 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3480 return bfd_set_section_flags (abfd, s, flags);
3483 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3486 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3487 struct elf_link_hash_entry *dir,
3488 struct elf_link_hash_entry *ind)
3490 struct ppc_elf_link_hash_entry *edir, *eind;
3492 edir = (struct ppc_elf_link_hash_entry *) dir;
3493 eind = (struct ppc_elf_link_hash_entry *) ind;
3495 edir->tls_mask |= eind->tls_mask;
3496 edir->has_sda_refs |= eind->has_sda_refs;
3498 /* If called to transfer flags for a weakdef during processing
3499 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3500 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3501 if (!(ELIMINATE_COPY_RELOCS
3502 && eind->elf.root.type != bfd_link_hash_indirect
3503 && edir->elf.dynamic_adjusted))
3504 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3506 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3507 edir->elf.ref_regular |= eind->elf.ref_regular;
3508 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3509 edir->elf.needs_plt |= eind->elf.needs_plt;
3510 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3512 if (eind->dyn_relocs != NULL)
3514 if (edir->dyn_relocs != NULL)
3516 struct elf_dyn_relocs **pp;
3517 struct elf_dyn_relocs *p;
3519 /* Add reloc counts against the indirect sym to the direct sym
3520 list. Merge any entries against the same section. */
3521 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3523 struct elf_dyn_relocs *q;
3525 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3526 if (q->sec == p->sec)
3528 q->pc_count += p->pc_count;
3529 q->count += p->count;
3536 *pp = edir->dyn_relocs;
3539 edir->dyn_relocs = eind->dyn_relocs;
3540 eind->dyn_relocs = NULL;
3543 /* If we were called to copy over info for a weak sym, that's all.
3544 You might think dyn_relocs need not be copied over; After all,
3545 both syms will be dynamic or both non-dynamic so we're just
3546 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3547 code in ppc_elf_adjust_dynamic_symbol needs to check for
3548 dyn_relocs in read-only sections, and it does so on what is the
3550 if (eind->elf.root.type != bfd_link_hash_indirect)
3553 /* Copy over the GOT refcount entries that we may have already seen to
3554 the symbol which just became indirect. */
3555 edir->elf.got.refcount += eind->elf.got.refcount;
3556 eind->elf.got.refcount = 0;
3558 /* And plt entries. */
3559 if (eind->elf.plt.plist != NULL)
3561 if (edir->elf.plt.plist != NULL)
3563 struct plt_entry **entp;
3564 struct plt_entry *ent;
3566 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3568 struct plt_entry *dent;
3570 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3571 if (dent->sec == ent->sec && dent->addend == ent->addend)
3573 dent->plt.refcount += ent->plt.refcount;
3580 *entp = edir->elf.plt.plist;
3583 edir->elf.plt.plist = eind->elf.plt.plist;
3584 eind->elf.plt.plist = NULL;
3587 if (eind->elf.dynindx != -1)
3589 if (edir->elf.dynindx != -1)
3590 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3591 edir->elf.dynstr_index);
3592 edir->elf.dynindx = eind->elf.dynindx;
3593 edir->elf.dynstr_index = eind->elf.dynstr_index;
3594 eind->elf.dynindx = -1;
3595 eind->elf.dynstr_index = 0;
3599 /* Hook called by the linker routine which adds symbols from an object
3600 file. We use it to put .comm items in .sbss, and not .bss. */
3603 ppc_elf_add_symbol_hook (bfd *abfd,
3604 struct bfd_link_info *info,
3605 Elf_Internal_Sym *sym,
3606 const char **namep ATTRIBUTE_UNUSED,
3607 flagword *flagsp ATTRIBUTE_UNUSED,
3611 if (sym->st_shndx == SHN_COMMON
3612 && !info->relocatable
3613 && is_ppc_elf (info->output_bfd)
3614 && sym->st_size <= elf_gp_size (abfd))
3616 /* Common symbols less than or equal to -G nn bytes are automatically
3618 struct ppc_elf_link_hash_table *htab;
3620 htab = ppc_elf_hash_table (info);
3621 if (htab->sbss == NULL)
3623 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3625 if (!htab->elf.dynobj)
3626 htab->elf.dynobj = abfd;
3628 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3631 if (htab->sbss == NULL)
3636 *valp = sym->st_size;
3639 if ((abfd->flags & DYNAMIC) == 0
3640 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3641 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
3642 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3647 /* Find a linker generated pointer with a given addend and type. */
3649 static elf_linker_section_pointers_t *
3650 elf_find_pointer_linker_section
3651 (elf_linker_section_pointers_t *linker_pointers,
3653 elf_linker_section_t *lsect)
3655 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3656 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3657 return linker_pointers;
3662 /* Allocate a pointer to live in a linker created section. */
3665 elf_allocate_pointer_linker_section (bfd *abfd,
3666 elf_linker_section_t *lsect,
3667 struct elf_link_hash_entry *h,
3668 const Elf_Internal_Rela *rel)
3670 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3671 elf_linker_section_pointers_t *linker_section_ptr;
3672 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3675 BFD_ASSERT (lsect != NULL);
3677 /* Is this a global symbol? */
3680 struct ppc_elf_link_hash_entry *eh;
3682 /* Has this symbol already been allocated? If so, our work is done. */
3683 eh = (struct ppc_elf_link_hash_entry *) h;
3684 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3689 ptr_linker_section_ptr = &eh->linker_section_pointer;
3693 BFD_ASSERT (is_ppc_elf (abfd));
3695 /* Allocation of a pointer to a local symbol. */
3696 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3698 /* Allocate a table to hold the local symbols if first time. */
3701 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3704 amt *= sizeof (elf_linker_section_pointers_t *);
3705 ptr = bfd_zalloc (abfd, amt);
3710 elf_local_ptr_offsets (abfd) = ptr;
3713 /* Has this symbol already been allocated? If so, our work is done. */
3714 if (elf_find_pointer_linker_section (ptr[r_symndx],
3719 ptr_linker_section_ptr = &ptr[r_symndx];
3722 /* Allocate space for a pointer in the linker section, and allocate
3723 a new pointer record from internal memory. */
3724 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3725 amt = sizeof (elf_linker_section_pointers_t);
3726 linker_section_ptr = bfd_alloc (abfd, amt);
3728 if (!linker_section_ptr)
3731 linker_section_ptr->next = *ptr_linker_section_ptr;
3732 linker_section_ptr->addend = rel->r_addend;
3733 linker_section_ptr->lsect = lsect;
3734 *ptr_linker_section_ptr = linker_section_ptr;
3736 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3738 linker_section_ptr->offset = lsect->section->size;
3739 lsect->section->size += 4;
3743 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3744 lsect->name, (long) linker_section_ptr->offset,
3745 (long) lsect->section->size);
3751 static struct plt_entry **
3752 update_local_sym_info (bfd *abfd,
3753 Elf_Internal_Shdr *symtab_hdr,
3754 unsigned long r_symndx,
3757 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3758 struct plt_entry **local_plt;
3759 char *local_got_tls_masks;
3761 if (local_got_refcounts == NULL)
3763 bfd_size_type size = symtab_hdr->sh_info;
3765 size *= (sizeof (*local_got_refcounts)
3766 + sizeof (*local_plt)
3767 + sizeof (*local_got_tls_masks));
3768 local_got_refcounts = bfd_zalloc (abfd, size);
3769 if (local_got_refcounts == NULL)
3771 elf_local_got_refcounts (abfd) = local_got_refcounts;
3774 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3775 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3776 local_got_tls_masks[r_symndx] |= tls_type;
3777 if (tls_type != PLT_IFUNC)
3778 local_got_refcounts[r_symndx] += 1;
3779 return local_plt + r_symndx;
3783 update_plt_info (bfd *abfd, struct plt_entry **plist,
3784 asection *sec, bfd_vma addend)
3786 struct plt_entry *ent;
3790 for (ent = *plist; ent != NULL; ent = ent->next)
3791 if (ent->sec == sec && ent->addend == addend)
3795 bfd_size_type amt = sizeof (*ent);
3796 ent = bfd_alloc (abfd, amt);
3801 ent->addend = addend;
3802 ent->plt.refcount = 0;
3805 ent->plt.refcount += 1;
3809 static struct plt_entry *
3810 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3812 struct plt_entry *ent;
3816 for (ent = *plist; ent != NULL; ent = ent->next)
3817 if (ent->sec == sec && ent->addend == addend)
3823 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3825 return (r_type == R_PPC_PLTREL24
3826 || r_type == R_PPC_LOCAL24PC
3827 || r_type == R_PPC_REL24
3828 || r_type == R_PPC_REL14
3829 || r_type == R_PPC_REL14_BRTAKEN
3830 || r_type == R_PPC_REL14_BRNTAKEN
3831 || r_type == R_PPC_ADDR24
3832 || r_type == R_PPC_ADDR14
3833 || r_type == R_PPC_ADDR14_BRTAKEN
3834 || r_type == R_PPC_ADDR14_BRNTAKEN);
3838 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3840 (*_bfd_error_handler)
3841 (_("%B: relocation %s cannot be used when making a shared object"),
3843 ppc_elf_howto_table[r_type]->name);
3844 bfd_set_error (bfd_error_bad_value);
3847 /* Look through the relocs for a section during the first phase, and
3848 allocate space in the global offset table or procedure linkage
3852 ppc_elf_check_relocs (bfd *abfd,
3853 struct bfd_link_info *info,
3855 const Elf_Internal_Rela *relocs)
3857 struct ppc_elf_link_hash_table *htab;
3858 Elf_Internal_Shdr *symtab_hdr;
3859 struct elf_link_hash_entry **sym_hashes;
3860 const Elf_Internal_Rela *rel;
3861 const Elf_Internal_Rela *rel_end;
3862 asection *got2, *sreloc;
3863 struct elf_link_hash_entry *tga;
3865 if (info->relocatable)
3868 /* Don't do anything special with non-loaded, non-alloced sections.
3869 In particular, any relocs in such sections should not affect GOT
3870 and PLT reference counting (ie. we don't allow them to create GOT
3871 or PLT entries), there's no possibility or desire to optimize TLS
3872 relocs, and there's not much point in propagating relocs to shared
3873 libs that the dynamic linker won't relocate. */
3874 if ((sec->flags & SEC_ALLOC) == 0)
3878 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3882 BFD_ASSERT (is_ppc_elf (abfd));
3884 /* Initialize howto table if not already done. */
3885 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3886 ppc_elf_howto_init ();
3888 htab = ppc_elf_hash_table (info);
3889 if (htab->glink == NULL)
3891 if (htab->elf.dynobj == NULL)
3892 htab->elf.dynobj = abfd;
3893 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3896 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3897 FALSE, FALSE, TRUE);
3898 symtab_hdr = &elf_symtab_hdr (abfd);
3899 sym_hashes = elf_sym_hashes (abfd);
3900 got2 = bfd_get_section_by_name (abfd, ".got2");
3903 rel_end = relocs + sec->reloc_count;
3904 for (rel = relocs; rel < rel_end; rel++)
3906 unsigned long r_symndx;
3907 enum elf_ppc_reloc_type r_type;
3908 struct elf_link_hash_entry *h;
3911 r_symndx = ELF32_R_SYM (rel->r_info);
3912 if (r_symndx < symtab_hdr->sh_info)
3916 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3917 while (h->root.type == bfd_link_hash_indirect
3918 || h->root.type == bfd_link_hash_warning)
3919 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3921 /* PR15323, ref flags aren't set for references in the same
3923 h->root.non_ir_ref = 1;
3926 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3927 This shows up in particular in an R_PPC_ADDR32 in the eabi
3930 && htab->got == NULL
3931 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3933 if (htab->elf.dynobj == NULL)
3934 htab->elf.dynobj = abfd;
3935 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3937 BFD_ASSERT (h == htab->elf.hgot);
3941 r_type = ELF32_R_TYPE (rel->r_info);
3942 if (h == NULL && !htab->is_vxworks)
3944 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3949 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3951 struct plt_entry **ifunc;
3953 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3954 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3959 /* STT_GNU_IFUNC symbols must have a PLT entry;
3960 In a non-pie executable even when there are
3963 || is_branch_reloc (r_type))
3966 if (r_type == R_PPC_PLTREL24)
3968 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3970 addend = rel->r_addend;
3972 if (!update_plt_info (abfd, ifunc, got2, addend))
3978 if (!htab->is_vxworks
3979 && is_branch_reloc (r_type)
3984 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3985 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3986 /* We have a new-style __tls_get_addr call with a marker
3990 /* Mark this section as having an old-style call. */
3991 sec->has_tls_get_addr_call = 1;
3998 /* These special tls relocs tie a call to __tls_get_addr with
3999 its parameter symbol. */
4002 case R_PPC_GOT_TLSLD16:
4003 case R_PPC_GOT_TLSLD16_LO:
4004 case R_PPC_GOT_TLSLD16_HI:
4005 case R_PPC_GOT_TLSLD16_HA:
4006 tls_type = TLS_TLS | TLS_LD;
4009 case R_PPC_GOT_TLSGD16:
4010 case R_PPC_GOT_TLSGD16_LO:
4011 case R_PPC_GOT_TLSGD16_HI:
4012 case R_PPC_GOT_TLSGD16_HA:
4013 tls_type = TLS_TLS | TLS_GD;
4016 case R_PPC_GOT_TPREL16:
4017 case R_PPC_GOT_TPREL16_LO:
4018 case R_PPC_GOT_TPREL16_HI:
4019 case R_PPC_GOT_TPREL16_HA:
4020 if (!info->executable)
4021 info->flags |= DF_STATIC_TLS;
4022 tls_type = TLS_TLS | TLS_TPREL;
4025 case R_PPC_GOT_DTPREL16:
4026 case R_PPC_GOT_DTPREL16_LO:
4027 case R_PPC_GOT_DTPREL16_HI:
4028 case R_PPC_GOT_DTPREL16_HA:
4029 tls_type = TLS_TLS | TLS_DTPREL;
4031 sec->has_tls_reloc = 1;
4034 /* GOT16 relocations */
4036 case R_PPC_GOT16_LO:
4037 case R_PPC_GOT16_HI:
4038 case R_PPC_GOT16_HA:
4039 /* This symbol requires a global offset table entry. */
4040 if (htab->got == NULL)
4042 if (htab->elf.dynobj == NULL)
4043 htab->elf.dynobj = abfd;
4044 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4049 h->got.refcount += 1;
4050 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4053 /* This is a global offset table entry for a local symbol. */
4054 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4057 /* We may also need a plt entry if the symbol turns out to be
4059 if (h != NULL && !info->shared)
4061 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4066 /* Indirect .sdata relocation. */
4067 case R_PPC_EMB_SDAI16:
4070 bad_shared_reloc (abfd, r_type);
4073 htab->sdata[0].sym->ref_regular = 1;
4074 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4079 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4080 h->non_got_ref = TRUE;
4084 /* Indirect .sdata2 relocation. */
4085 case R_PPC_EMB_SDA2I16:
4088 bad_shared_reloc (abfd, r_type);
4091 htab->sdata[1].sym->ref_regular = 1;
4092 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4097 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4098 h->non_got_ref = TRUE;
4102 case R_PPC_SDAREL16:
4103 htab->sdata[0].sym->ref_regular = 1;
4106 case R_PPC_VLE_SDAREL_LO16A:
4107 case R_PPC_VLE_SDAREL_LO16D:
4108 case R_PPC_VLE_SDAREL_HI16A:
4109 case R_PPC_VLE_SDAREL_HI16D:
4110 case R_PPC_VLE_SDAREL_HA16A:
4111 case R_PPC_VLE_SDAREL_HA16D:
4114 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4115 h->non_got_ref = TRUE;
4119 case R_PPC_VLE_REL8:
4120 case R_PPC_VLE_REL15:
4121 case R_PPC_VLE_REL24:
4122 case R_PPC_VLE_LO16A:
4123 case R_PPC_VLE_LO16D:
4124 case R_PPC_VLE_HI16A:
4125 case R_PPC_VLE_HI16D:
4126 case R_PPC_VLE_HA16A:
4127 case R_PPC_VLE_HA16D:
4130 case R_PPC_EMB_SDA2REL:
4133 bad_shared_reloc (abfd, r_type);
4136 htab->sdata[1].sym->ref_regular = 1;
4139 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4140 h->non_got_ref = TRUE;
4144 case R_PPC_VLE_SDA21_LO:
4145 case R_PPC_VLE_SDA21:
4146 case R_PPC_EMB_SDA21:
4147 case R_PPC_EMB_RELSDA:
4150 bad_shared_reloc (abfd, r_type);
4155 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4156 h->non_got_ref = TRUE;
4160 case R_PPC_EMB_NADDR32:
4161 case R_PPC_EMB_NADDR16:
4162 case R_PPC_EMB_NADDR16_LO:
4163 case R_PPC_EMB_NADDR16_HI:
4164 case R_PPC_EMB_NADDR16_HA:
4167 bad_shared_reloc (abfd, r_type);
4171 h->non_got_ref = TRUE;
4174 case R_PPC_PLTREL24:
4179 case R_PPC_PLTREL32:
4180 case R_PPC_PLT16_LO:
4181 case R_PPC_PLT16_HI:
4182 case R_PPC_PLT16_HA:
4184 fprintf (stderr, "Reloc requires a PLT entry\n");
4186 /* This symbol requires a procedure linkage table entry. We
4187 actually build the entry in finish_dynamic_symbol,
4188 because this might be a case of linking PIC code without
4189 linking in any dynamic objects, in which case we don't
4190 need to generate a procedure linkage table after all. */
4194 /* It does not make sense to have a procedure linkage
4195 table entry for a local symbol. */
4196 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4197 abfd, sec, rel->r_offset,
4198 ppc_elf_howto_table[r_type]->name);
4199 bfd_set_error (bfd_error_bad_value);
4206 if (r_type == R_PPC_PLTREL24)
4208 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4210 addend = rel->r_addend;
4213 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4218 /* The following relocations don't need to propagate the
4219 relocation if linking a shared object since they are
4220 section relative. */
4222 case R_PPC_SECTOFF_LO:
4223 case R_PPC_SECTOFF_HI:
4224 case R_PPC_SECTOFF_HA:
4225 case R_PPC_DTPREL16:
4226 case R_PPC_DTPREL16_LO:
4227 case R_PPC_DTPREL16_HI:
4228 case R_PPC_DTPREL16_HA:
4233 case R_PPC_REL16_LO:
4234 case R_PPC_REL16_HI:
4235 case R_PPC_REL16_HA:
4236 ppc_elf_tdata (abfd)->has_rel16 = 1;
4239 /* These are just markers. */
4241 case R_PPC_EMB_MRKREF:
4245 case R_PPC_RELAX_PLT:
4246 case R_PPC_RELAX_PLTREL24:
4249 /* These should only appear in dynamic objects. */
4251 case R_PPC_GLOB_DAT:
4252 case R_PPC_JMP_SLOT:
4253 case R_PPC_RELATIVE:
4254 case R_PPC_IRELATIVE:
4257 /* These aren't handled yet. We'll report an error later. */
4259 case R_PPC_EMB_RELSEC16:
4260 case R_PPC_EMB_RELST_LO:
4261 case R_PPC_EMB_RELST_HI:
4262 case R_PPC_EMB_RELST_HA:
4263 case R_PPC_EMB_BIT_FLD:
4266 /* This refers only to functions defined in the shared library. */
4267 case R_PPC_LOCAL24PC:
4268 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4270 htab->plt_type = PLT_OLD;
4271 htab->old_bfd = abfd;
4273 if (h != NULL && h->type == STT_GNU_IFUNC)
4277 info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"),
4278 abfd, sec, rel->r_offset,
4279 h->root.root.string);
4280 bfd_set_error (bfd_error_bad_value);
4284 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4289 /* This relocation describes the C++ object vtable hierarchy.
4290 Reconstruct it for later use during GC. */
4291 case R_PPC_GNU_VTINHERIT:
4292 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4296 /* This relocation describes which C++ vtable entries are actually
4297 used. Record for later use during GC. */
4298 case R_PPC_GNU_VTENTRY:
4299 BFD_ASSERT (h != NULL);
4301 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4305 /* We shouldn't really be seeing these. */
4308 case R_PPC_TPREL16_LO:
4309 case R_PPC_TPREL16_HI:
4310 case R_PPC_TPREL16_HA:
4311 if (!info->executable)
4312 info->flags |= DF_STATIC_TLS;
4316 case R_PPC_DTPMOD32:
4317 case R_PPC_DTPREL32:
4323 && (sec->flags & SEC_CODE) != 0
4325 && htab->plt_type == PLT_UNSET)
4327 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4328 the start of a function, which assembles to a REL32
4329 reference to .got2. If we detect one of these, then
4330 force the old PLT layout because the linker cannot
4331 reliably deduce the GOT pointer value needed for
4334 Elf_Internal_Sym *isym;
4336 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4341 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4344 htab->plt_type = PLT_OLD;
4345 htab->old_bfd = abfd;
4348 if (h == NULL || h == htab->elf.hgot)
4354 case R_PPC_ADDR16_LO:
4355 case R_PPC_ADDR16_HI:
4356 case R_PPC_ADDR16_HA:
4359 if (h != NULL && !info->shared)
4361 /* We may need a plt entry if the symbol turns out to be
4362 a function defined in a dynamic object. */
4363 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4366 /* We may need a copy reloc too. */
4368 h->pointer_equality_needed = 1;
4374 case R_PPC_REL14_BRTAKEN:
4375 case R_PPC_REL14_BRNTAKEN:
4378 if (h == htab->elf.hgot)
4380 if (htab->plt_type == PLT_UNSET)
4382 htab->plt_type = PLT_OLD;
4383 htab->old_bfd = abfd;
4391 case R_PPC_ADDR14_BRTAKEN:
4392 case R_PPC_ADDR14_BRNTAKEN:
4393 if (h != NULL && !info->shared)
4395 /* We may need a plt entry if the symbol turns out to be
4396 a function defined in a dynamic object. */
4398 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4404 /* If we are creating a shared library, and this is a reloc
4405 against a global symbol, or a non PC relative reloc
4406 against a local symbol, then we need to copy the reloc
4407 into the shared library. However, if we are linking with
4408 -Bsymbolic, we do not need to copy a reloc against a
4409 global symbol which is defined in an object we are
4410 including in the link (i.e., DEF_REGULAR is set). At
4411 this point we have not seen all the input files, so it is
4412 possible that DEF_REGULAR is not set now but will be set
4413 later (it is never cleared). In case of a weak definition,
4414 DEF_REGULAR may be cleared later by a strong definition in
4415 a shared library. We account for that possibility below by
4416 storing information in the dyn_relocs field of the hash
4417 table entry. A similar situation occurs when creating
4418 shared libraries and symbol visibility changes render the
4421 If on the other hand, we are creating an executable, we
4422 may need to keep relocations for symbols satisfied by a
4423 dynamic library if we manage to avoid copy relocs for the
4426 && (must_be_dyn_reloc (info, r_type)
4428 && (!SYMBOLIC_BIND (info, h)
4429 || h->root.type == bfd_link_hash_defweak
4430 || !h->def_regular))))
4431 || (ELIMINATE_COPY_RELOCS
4434 && (h->root.type == bfd_link_hash_defweak
4435 || !h->def_regular)))
4439 "ppc_elf_check_relocs needs to "
4440 "create relocation for %s\n",
4441 (h && h->root.root.string
4442 ? h->root.root.string : "<unknown>"));
4446 if (htab->elf.dynobj == NULL)
4447 htab->elf.dynobj = abfd;
4449 sreloc = _bfd_elf_make_dynamic_reloc_section
4450 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4456 /* If this is a global symbol, we count the number of
4457 relocations we need for this symbol. */
4460 struct elf_dyn_relocs *p;
4461 struct elf_dyn_relocs **rel_head;
4463 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4465 if (p == NULL || p->sec != sec)
4467 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4470 p->next = *rel_head;
4477 if (!must_be_dyn_reloc (info, r_type))
4482 /* Track dynamic relocs needed for local syms too.
4483 We really need local syms available to do this
4485 struct ppc_dyn_relocs *p;
4486 struct ppc_dyn_relocs **rel_head;
4487 bfd_boolean is_ifunc;
4490 Elf_Internal_Sym *isym;
4492 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4497 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4501 vpp = &elf_section_data (s)->local_dynrel;
4502 rel_head = (struct ppc_dyn_relocs **) vpp;
4503 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4505 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4507 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4509 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4512 p->next = *rel_head;
4515 p->ifunc = is_ifunc;
4530 /* Merge object attributes from IBFD into OBFD. Raise an error if
4531 there are conflicting attributes. */
4533 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4535 obj_attribute *in_attr, *in_attrs;
4536 obj_attribute *out_attr, *out_attrs;
4538 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4540 /* This is the first object. Copy the attributes. */
4541 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4543 /* Use the Tag_null value to indicate the attributes have been
4545 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4550 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4551 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4553 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4554 non-conflicting ones. */
4555 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4556 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4557 if (in_attr->i != out_attr->i)
4560 if (out_attr->i == 0)
4561 out_attr->i = in_attr->i;
4562 else if (in_attr->i == 0)
4564 else if (out_attr->i == 1 && in_attr->i == 2)
4566 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4567 else if (out_attr->i == 1 && in_attr->i == 3)
4569 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4571 else if (out_attr->i == 3 && in_attr->i == 1)
4573 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4575 else if (out_attr->i == 3 && in_attr->i == 2)
4577 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4579 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4581 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4582 else if (in_attr->i > 3)
4584 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4588 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4592 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4593 merge non-conflicting ones. */
4594 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4595 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4596 if (in_attr->i != out_attr->i)
4598 const char *in_abi = NULL, *out_abi = NULL;
4602 case 1: in_abi = "generic"; break;
4603 case 2: in_abi = "AltiVec"; break;
4604 case 3: in_abi = "SPE"; break;
4607 switch (out_attr->i)
4609 case 1: out_abi = "generic"; break;
4610 case 2: out_abi = "AltiVec"; break;
4611 case 3: out_abi = "SPE"; break;
4615 if (out_attr->i == 0)
4616 out_attr->i = in_attr->i;
4617 else if (in_attr->i == 0)
4619 /* For now, allow generic to transition to AltiVec or SPE
4620 without a warning. If GCC marked files with their stack
4621 alignment and used don't-care markings for files which are
4622 not affected by the vector ABI, we could warn about this
4624 else if (out_attr->i == 1)
4625 out_attr->i = in_attr->i;
4626 else if (in_attr->i == 1)
4628 else if (in_abi == NULL)
4630 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4632 else if (out_abi == NULL)
4634 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4638 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4639 ibfd, obfd, in_abi, out_abi);
4642 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4643 and merge non-conflicting ones. */
4644 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4645 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4646 if (in_attr->i != out_attr->i)
4649 if (out_attr->i == 0)
4650 out_attr->i = in_attr->i;
4651 else if (in_attr->i == 0)
4653 else if (out_attr->i == 1 && in_attr->i == 2)
4655 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4656 else if (out_attr->i == 2 && in_attr->i == 1)
4658 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4659 else if (in_attr->i > 2)
4661 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4665 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4669 /* Merge Tag_compatibility attributes and any common GNU ones. */
4670 _bfd_elf_merge_object_attributes (ibfd, obfd);
4675 /* Merge backend specific data from an object file to the output
4676 object file when linking. */
4679 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4685 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4688 /* Check if we have the same endianness. */
4689 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4692 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4695 new_flags = elf_elfheader (ibfd)->e_flags;
4696 old_flags = elf_elfheader (obfd)->e_flags;
4697 if (!elf_flags_init (obfd))
4699 /* First call, no flags set. */
4700 elf_flags_init (obfd) = TRUE;
4701 elf_elfheader (obfd)->e_flags = new_flags;
4704 /* Compatible flags are ok. */
4705 else if (new_flags == old_flags)
4708 /* Incompatible flags. */
4711 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4712 to be linked with either. */
4714 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4715 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4718 (*_bfd_error_handler)
4719 (_("%B: compiled with -mrelocatable and linked with "
4720 "modules compiled normally"), ibfd);
4722 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4723 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4726 (*_bfd_error_handler)
4727 (_("%B: compiled normally and linked with "
4728 "modules compiled with -mrelocatable"), ibfd);
4731 /* The output is -mrelocatable-lib iff both the input files are. */
4732 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4733 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4735 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4736 but each input file is either -mrelocatable or -mrelocatable-lib. */
4737 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4738 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4739 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4740 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4742 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4743 any module uses it. */
4744 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4746 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4747 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4749 /* Warn about any other mismatches. */
4750 if (new_flags != old_flags)
4753 (*_bfd_error_handler)
4754 (_("%B: uses different e_flags (0x%lx) fields "
4755 "than previous modules (0x%lx)"),
4756 ibfd, (long) new_flags, (long) old_flags);
4761 bfd_set_error (bfd_error_bad_value);
4770 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4772 split16_format_type split16_format)
4775 unsigned int insn, top5;
4777 insn = bfd_get_32 (output_bfd, loc);
4778 top5 = value & 0xf800;
4779 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4781 insn |= value & 0x7ff;
4782 bfd_put_32 (output_bfd, insn, loc);
4786 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4787 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4789 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4790 struct bfd_link_info *info)
4792 struct ppc_elf_link_hash_table *htab;
4795 htab = ppc_elf_hash_table (info);
4797 if (htab->plt_type == PLT_UNSET)
4799 struct elf_link_hash_entry *h;
4801 if (htab->params->plt_style == PLT_OLD)
4802 htab->plt_type = PLT_OLD;
4803 else if (info->shared
4804 && htab->elf.dynamic_sections_created
4805 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4806 FALSE, FALSE, TRUE)) != NULL
4807 && (h->type == STT_FUNC
4810 && !(SYMBOL_CALLS_LOCAL (info, h)
4811 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4812 && h->root.type == bfd_link_hash_undefweak)))
4814 /* Profiling of shared libs (and pies) is not supported with
4815 secure plt, because ppc32 does profiling before a
4816 function prologue and a secure plt pic call stubs needs
4817 r30 to be set up. */
4818 htab->plt_type = PLT_OLD;
4823 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4825 /* Look through the reloc flags left by ppc_elf_check_relocs.
4826 Use the old style bss plt if a file makes plt calls
4827 without using the new relocs, and if ld isn't given
4828 --secure-plt and we never see REL16 relocs. */
4829 if (plt_type == PLT_UNSET)
4831 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
4832 if (is_ppc_elf (ibfd))
4834 if (ppc_elf_tdata (ibfd)->has_rel16)
4836 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4839 htab->old_bfd = ibfd;
4843 htab->plt_type = plt_type;
4846 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4848 if (htab->old_bfd != NULL)
4849 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4852 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4855 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4857 if (htab->plt_type == PLT_NEW)
4859 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4860 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4862 /* The new PLT is a loaded section. */
4863 if (htab->plt != NULL
4864 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4867 /* The new GOT is not executable. */
4868 if (htab->got != NULL
4869 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4874 /* Stop an unused .glink section from affecting .text alignment. */
4875 if (htab->glink != NULL
4876 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4879 return htab->plt_type == PLT_NEW;
4882 /* Return the section that should be marked against GC for a given
4886 ppc_elf_gc_mark_hook (asection *sec,
4887 struct bfd_link_info *info,
4888 Elf_Internal_Rela *rel,
4889 struct elf_link_hash_entry *h,
4890 Elf_Internal_Sym *sym)
4893 switch (ELF32_R_TYPE (rel->r_info))
4895 case R_PPC_GNU_VTINHERIT:
4896 case R_PPC_GNU_VTENTRY:
4900 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4903 /* Update the got, plt and dynamic reloc reference counts for the
4904 section being removed. */
4907 ppc_elf_gc_sweep_hook (bfd *abfd,
4908 struct bfd_link_info *info,
4910 const Elf_Internal_Rela *relocs)
4912 struct ppc_elf_link_hash_table *htab;
4913 Elf_Internal_Shdr *symtab_hdr;
4914 struct elf_link_hash_entry **sym_hashes;
4915 bfd_signed_vma *local_got_refcounts;
4916 const Elf_Internal_Rela *rel, *relend;
4919 if (info->relocatable)
4922 if ((sec->flags & SEC_ALLOC) == 0)
4925 elf_section_data (sec)->local_dynrel = NULL;
4927 htab = ppc_elf_hash_table (info);
4928 symtab_hdr = &elf_symtab_hdr (abfd);
4929 sym_hashes = elf_sym_hashes (abfd);
4930 local_got_refcounts = elf_local_got_refcounts (abfd);
4931 got2 = bfd_get_section_by_name (abfd, ".got2");
4933 relend = relocs + sec->reloc_count;
4934 for (rel = relocs; rel < relend; rel++)
4936 unsigned long r_symndx;
4937 enum elf_ppc_reloc_type r_type;
4938 struct elf_link_hash_entry *h = NULL;
4940 r_symndx = ELF32_R_SYM (rel->r_info);
4941 if (r_symndx >= symtab_hdr->sh_info)
4943 struct elf_dyn_relocs **pp, *p;
4944 struct ppc_elf_link_hash_entry *eh;
4946 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4947 while (h->root.type == bfd_link_hash_indirect
4948 || h->root.type == bfd_link_hash_warning)
4949 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4950 eh = (struct ppc_elf_link_hash_entry *) h;
4952 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4955 /* Everything must go for SEC. */
4961 r_type = ELF32_R_TYPE (rel->r_info);
4962 if (!htab->is_vxworks
4964 && local_got_refcounts != NULL
4966 || is_branch_reloc (r_type)))
4968 struct plt_entry **local_plt = (struct plt_entry **)
4969 (local_got_refcounts + symtab_hdr->sh_info);
4970 char *local_got_tls_masks = (char *)
4971 (local_plt + symtab_hdr->sh_info);
4972 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4974 struct plt_entry **ifunc = local_plt + r_symndx;
4976 struct plt_entry *ent;
4978 if (r_type == R_PPC_PLTREL24 && info->shared)
4979 addend = rel->r_addend;
4980 ent = find_plt_ent (ifunc, got2, addend);
4981 if (ent->plt.refcount > 0)
4982 ent->plt.refcount -= 1;
4989 case R_PPC_GOT_TLSLD16:
4990 case R_PPC_GOT_TLSLD16_LO:
4991 case R_PPC_GOT_TLSLD16_HI:
4992 case R_PPC_GOT_TLSLD16_HA:
4993 case R_PPC_GOT_TLSGD16:
4994 case R_PPC_GOT_TLSGD16_LO:
4995 case R_PPC_GOT_TLSGD16_HI:
4996 case R_PPC_GOT_TLSGD16_HA:
4997 case R_PPC_GOT_TPREL16:
4998 case R_PPC_GOT_TPREL16_LO:
4999 case R_PPC_GOT_TPREL16_HI:
5000 case R_PPC_GOT_TPREL16_HA:
5001 case R_PPC_GOT_DTPREL16:
5002 case R_PPC_GOT_DTPREL16_LO:
5003 case R_PPC_GOT_DTPREL16_HI:
5004 case R_PPC_GOT_DTPREL16_HA:
5006 case R_PPC_GOT16_LO:
5007 case R_PPC_GOT16_HI:
5008 case R_PPC_GOT16_HA:
5011 if (h->got.refcount > 0)
5015 struct plt_entry *ent;
5017 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5018 if (ent != NULL && ent->plt.refcount > 0)
5019 ent->plt.refcount -= 1;
5022 else if (local_got_refcounts != NULL)
5024 if (local_got_refcounts[r_symndx] > 0)
5025 local_got_refcounts[r_symndx]--;
5031 case R_PPC_REL14_BRTAKEN:
5032 case R_PPC_REL14_BRNTAKEN:
5034 if (h == NULL || h == htab->elf.hgot)
5041 case R_PPC_ADDR16_LO:
5042 case R_PPC_ADDR16_HI:
5043 case R_PPC_ADDR16_HA:
5045 case R_PPC_ADDR14_BRTAKEN:
5046 case R_PPC_ADDR14_BRNTAKEN:
5053 case R_PPC_PLTREL24:
5054 case R_PPC_PLTREL32:
5055 case R_PPC_PLT16_LO:
5056 case R_PPC_PLT16_HI:
5057 case R_PPC_PLT16_HA:
5061 struct plt_entry *ent;
5063 if (r_type == R_PPC_PLTREL24 && info->shared)
5064 addend = rel->r_addend;
5065 ent = find_plt_ent (&h->plt.plist, got2, addend);
5066 if (ent != NULL && ent->plt.refcount > 0)
5067 ent->plt.refcount -= 1;
5078 /* Set plt output section type, htab->tls_get_addr, and call the
5079 generic ELF tls_setup function. */
5082 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5084 struct ppc_elf_link_hash_table *htab;
5086 htab = ppc_elf_hash_table (info);
5087 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5088 FALSE, FALSE, TRUE);
5089 if (!htab->params->no_tls_get_addr_opt)
5091 struct elf_link_hash_entry *opt, *tga;
5092 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5093 FALSE, FALSE, TRUE);
5095 && (opt->root.type == bfd_link_hash_defined
5096 || opt->root.type == bfd_link_hash_defweak))
5098 /* If glibc supports an optimized __tls_get_addr call stub,
5099 signalled by the presence of __tls_get_addr_opt, and we'll
5100 be calling __tls_get_addr via a plt call stub, then
5101 make __tls_get_addr point to __tls_get_addr_opt. */
5102 tga = htab->tls_get_addr;
5103 if (htab->elf.dynamic_sections_created
5105 && (tga->type == STT_FUNC
5107 && !(SYMBOL_CALLS_LOCAL (info, tga)
5108 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5109 && tga->root.type == bfd_link_hash_undefweak)))
5111 struct plt_entry *ent;
5112 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5113 if (ent->plt.refcount > 0)
5117 tga->root.type = bfd_link_hash_indirect;
5118 tga->root.u.i.link = &opt->root;
5119 ppc_elf_copy_indirect_symbol (info, opt, tga);
5120 if (opt->dynindx != -1)
5122 /* Use __tls_get_addr_opt in dynamic relocations. */
5124 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5126 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5129 htab->tls_get_addr = opt;
5134 htab->params->no_tls_get_addr_opt = TRUE;
5136 if (htab->plt_type == PLT_NEW
5137 && htab->plt != NULL
5138 && htab->plt->output_section != NULL)
5140 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5141 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5144 return _bfd_elf_tls_setup (obfd, info);
5147 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5151 branch_reloc_hash_match (const bfd *ibfd,
5152 const Elf_Internal_Rela *rel,
5153 const struct elf_link_hash_entry *hash)
5155 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5156 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5157 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5159 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5161 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5162 struct elf_link_hash_entry *h;
5164 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5165 while (h->root.type == bfd_link_hash_indirect
5166 || h->root.type == bfd_link_hash_warning)
5167 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5174 /* Run through all the TLS relocs looking for optimization
5178 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5179 struct bfd_link_info *info)
5183 struct ppc_elf_link_hash_table *htab;
5186 if (info->relocatable || !info->executable)
5189 htab = ppc_elf_hash_table (info);
5193 /* Make two passes through the relocs. First time check that tls
5194 relocs involved in setting up a tls_get_addr call are indeed
5195 followed by such a call. If they are not, don't do any tls
5196 optimization. On the second pass twiddle tls_mask flags to
5197 notify relocate_section that optimization can be done, and
5198 adjust got and plt refcounts. */
5199 for (pass = 0; pass < 2; ++pass)
5200 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5202 Elf_Internal_Sym *locsyms = NULL;
5203 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5204 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5206 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5207 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5209 Elf_Internal_Rela *relstart, *rel, *relend;
5210 int expecting_tls_get_addr = 0;
5212 /* Read the relocations. */
5213 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5215 if (relstart == NULL)
5218 relend = relstart + sec->reloc_count;
5219 for (rel = relstart; rel < relend; rel++)
5221 enum elf_ppc_reloc_type r_type;
5222 unsigned long r_symndx;
5223 struct elf_link_hash_entry *h = NULL;
5225 char tls_set, tls_clear;
5226 bfd_boolean is_local;
5227 bfd_signed_vma *got_count;
5229 r_symndx = ELF32_R_SYM (rel->r_info);
5230 if (r_symndx >= symtab_hdr->sh_info)
5232 struct elf_link_hash_entry **sym_hashes;
5234 sym_hashes = elf_sym_hashes (ibfd);
5235 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5236 while (h->root.type == bfd_link_hash_indirect
5237 || h->root.type == bfd_link_hash_warning)
5238 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5246 r_type = ELF32_R_TYPE (rel->r_info);
5247 /* If this section has old-style __tls_get_addr calls
5248 without marker relocs, then check that each
5249 __tls_get_addr call reloc is preceded by a reloc
5250 that conceivably belongs to the __tls_get_addr arg
5251 setup insn. If we don't find matching arg setup
5252 relocs, don't do any tls optimization. */
5254 && sec->has_tls_get_addr_call
5256 && h == htab->tls_get_addr
5257 && !expecting_tls_get_addr
5258 && is_branch_reloc (r_type))
5260 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5261 "TLS optimization disabled\n",
5262 ibfd, sec, rel->r_offset);
5263 if (elf_section_data (sec)->relocs != relstart)
5268 expecting_tls_get_addr = 0;
5271 case R_PPC_GOT_TLSLD16:
5272 case R_PPC_GOT_TLSLD16_LO:
5273 expecting_tls_get_addr = 1;
5276 case R_PPC_GOT_TLSLD16_HI:
5277 case R_PPC_GOT_TLSLD16_HA:
5278 /* These relocs should never be against a symbol
5279 defined in a shared lib. Leave them alone if
5280 that turns out to be the case. */
5289 case R_PPC_GOT_TLSGD16:
5290 case R_PPC_GOT_TLSGD16_LO:
5291 expecting_tls_get_addr = 1;
5294 case R_PPC_GOT_TLSGD16_HI:
5295 case R_PPC_GOT_TLSGD16_HA:
5301 tls_set = TLS_TLS | TLS_TPRELGD;
5305 case R_PPC_GOT_TPREL16:
5306 case R_PPC_GOT_TPREL16_LO:
5307 case R_PPC_GOT_TPREL16_HI:
5308 case R_PPC_GOT_TPREL16_HA:
5313 tls_clear = TLS_TPREL;
5321 expecting_tls_get_addr = 2;
5332 if (!expecting_tls_get_addr
5333 || (expecting_tls_get_addr == 1
5334 && !sec->has_tls_get_addr_call))
5337 if (rel + 1 < relend
5338 && branch_reloc_hash_match (ibfd, rel + 1,
5339 htab->tls_get_addr))
5342 /* Uh oh, we didn't find the expected call. We
5343 could just mark this symbol to exclude it
5344 from tls optimization but it's safer to skip
5345 the entire optimization. */
5346 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5347 "TLS optimization disabled\n"),
5348 ibfd, sec, rel->r_offset);
5349 if (elf_section_data (sec)->relocs != relstart)
5354 if (expecting_tls_get_addr)
5356 struct plt_entry *ent;
5360 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5361 addend = rel[1].r_addend;
5362 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5364 if (ent != NULL && ent->plt.refcount > 0)
5365 ent->plt.refcount -= 1;
5367 if (expecting_tls_get_addr == 2)
5373 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5374 got_count = &h->got.refcount;
5378 bfd_signed_vma *lgot_refs;
5379 struct plt_entry **local_plt;
5382 if (locsyms == NULL)
5384 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5385 if (locsyms == NULL)
5386 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5387 symtab_hdr->sh_info,
5388 0, NULL, NULL, NULL);
5389 if (locsyms == NULL)
5391 if (elf_section_data (sec)->relocs != relstart)
5396 lgot_refs = elf_local_got_refcounts (ibfd);
5397 if (lgot_refs == NULL)
5399 local_plt = (struct plt_entry **)
5400 (lgot_refs + symtab_hdr->sh_info);
5401 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5402 tls_mask = &lgot_masks[r_symndx];
5403 got_count = &lgot_refs[r_symndx];
5408 /* We managed to get rid of a got entry. */
5413 *tls_mask |= tls_set;
5414 *tls_mask &= ~tls_clear;
5417 if (elf_section_data (sec)->relocs != relstart)
5422 && (symtab_hdr->contents != (unsigned char *) locsyms))
5424 if (!info->keep_memory)
5427 symtab_hdr->contents = (unsigned char *) locsyms;
5433 /* Return true if we have dynamic relocs that apply to read-only sections. */
5436 readonly_dynrelocs (struct elf_link_hash_entry *h)
5438 struct elf_dyn_relocs *p;
5440 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5442 asection *s = p->sec->output_section;
5445 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5446 == (SEC_READONLY | SEC_ALLOC)))
5452 /* Adjust a symbol defined by a dynamic object and referenced by a
5453 regular object. The current definition is in some section of the
5454 dynamic object, but we're not including those sections. We have to
5455 change the definition to something the rest of the link can
5459 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5460 struct elf_link_hash_entry *h)
5462 struct ppc_elf_link_hash_table *htab;
5466 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5467 h->root.root.string);
5470 /* Make sure we know what is going on here. */
5471 htab = ppc_elf_hash_table (info);
5472 BFD_ASSERT (htab->elf.dynobj != NULL
5474 || h->type == STT_GNU_IFUNC
5475 || h->u.weakdef != NULL
5478 && !h->def_regular)));
5480 /* Deal with function syms. */
5481 if (h->type == STT_FUNC
5482 || h->type == STT_GNU_IFUNC
5485 /* Clear procedure linkage table information for any symbol that
5486 won't need a .plt entry. */
5487 struct plt_entry *ent;
5488 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5489 if (ent->plt.refcount > 0)
5492 || (h->type != STT_GNU_IFUNC
5493 && (SYMBOL_CALLS_LOCAL (info, h)
5494 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5495 && h->root.type == bfd_link_hash_undefweak))))
5497 /* A PLT entry is not required/allowed when:
5499 1. We are not using ld.so; because then the PLT entry
5500 can't be set up, so we can't use one. In this case,
5501 ppc_elf_adjust_dynamic_symbol won't even be called.
5503 2. GC has rendered the entry unused.
5505 3. We know for certain that a call to this symbol
5506 will go to this object, or will remain undefined. */
5507 h->plt.plist = NULL;
5512 /* After adjust_dynamic_symbol, non_got_ref set in the
5513 non-shared case means that we have allocated space in
5514 .dynbss for the symbol and thus dyn_relocs for this
5515 symbol should be discarded.
5516 If we get here we know we are making a PLT entry for this
5517 symbol, and in an executable we'd normally resolve
5518 relocations against this symbol to the PLT entry. Allow
5519 dynamic relocs if the reference is weak, and the dynamic
5520 relocs will not cause text relocation. */
5521 if (!h->ref_regular_nonweak
5523 && h->type != STT_GNU_IFUNC
5524 && !htab->is_vxworks
5525 && !ppc_elf_hash_entry (h)->has_sda_refs
5526 && !readonly_dynrelocs (h))
5532 h->plt.plist = NULL;
5534 /* If this is a weak symbol, and there is a real definition, the
5535 processor independent code will have arranged for us to see the
5536 real definition first, and we can just use the same value. */
5537 if (h->u.weakdef != NULL)
5539 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5540 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5541 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5542 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5543 if (ELIMINATE_COPY_RELOCS)
5544 h->non_got_ref = h->u.weakdef->non_got_ref;
5548 /* This is a reference to a symbol defined by a dynamic object which
5549 is not a function. */
5551 /* If we are creating a shared library, we must presume that the
5552 only references to the symbol are via the global offset table.
5553 For such cases we need not do anything here; the relocations will
5554 be handled correctly by relocate_section. */
5558 /* If there are no references to this symbol that do not use the
5559 GOT, we don't need to generate a copy reloc. */
5560 if (!h->non_got_ref)
5563 /* If we didn't find any dynamic relocs in read-only sections, then
5564 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5565 We can't do this if there are any small data relocations. This
5566 doesn't work on VxWorks, where we can not have dynamic
5567 relocations (other than copy and jump slot relocations) in an
5569 if (ELIMINATE_COPY_RELOCS
5570 && !ppc_elf_hash_entry (h)->has_sda_refs
5571 && !htab->is_vxworks
5573 && !readonly_dynrelocs (h))
5579 /* We must allocate the symbol in our .dynbss section, which will
5580 become part of the .bss section of the executable. There will be
5581 an entry for this symbol in the .dynsym section. The dynamic
5582 object will contain position independent code, so all references
5583 from the dynamic object to this symbol will go through the global
5584 offset table. The dynamic linker will use the .dynsym entry to
5585 determine the address it must put in the global offset table, so
5586 both the dynamic object and the regular object will refer to the
5587 same memory location for the variable.
5589 Of course, if the symbol is referenced using SDAREL relocs, we
5590 must instead allocate it in .sbss. */
5592 if (ppc_elf_hash_entry (h)->has_sda_refs)
5596 BFD_ASSERT (s != NULL);
5598 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5599 copy the initial value out of the dynamic object and into the
5600 runtime process image. We need to remember the offset into the
5601 .rela.bss section we are going to use. */
5602 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5606 if (ppc_elf_hash_entry (h)->has_sda_refs)
5607 srel = htab->relsbss;
5609 srel = htab->relbss;
5610 BFD_ASSERT (srel != NULL);
5611 srel->size += sizeof (Elf32_External_Rela);
5615 return _bfd_elf_adjust_dynamic_copy (h, s);
5618 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5619 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5620 specifying the addend on the plt relocation. For -fpic code, the sym
5621 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5622 xxxxxxxx.got2.plt_pic32.<callee>. */
5625 add_stub_sym (struct plt_entry *ent,
5626 struct elf_link_hash_entry *h,
5627 struct bfd_link_info *info)
5629 struct elf_link_hash_entry *sh;
5630 size_t len1, len2, len3;
5633 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5636 stub = ".plt_pic32.";
5638 stub = ".plt_call32.";
5640 len1 = strlen (h->root.root.string);
5641 len2 = strlen (stub);
5644 len3 = strlen (ent->sec->name);
5645 name = bfd_malloc (len1 + len2 + len3 + 9);
5648 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5650 memcpy (name + 8, ent->sec->name, len3);
5651 memcpy (name + 8 + len3, stub, len2);
5652 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5653 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5656 if (sh->root.type == bfd_link_hash_new)
5658 sh->root.type = bfd_link_hash_defined;
5659 sh->root.u.def.section = htab->glink;
5660 sh->root.u.def.value = ent->glink_offset;
5661 sh->ref_regular = 1;
5662 sh->def_regular = 1;
5663 sh->ref_regular_nonweak = 1;
5664 sh->forced_local = 1;
5670 /* Allocate NEED contiguous space in .got, and return the offset.
5671 Handles allocation of the got header when crossing 32k. */
5674 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5677 unsigned int max_before_header;
5679 if (htab->plt_type == PLT_VXWORKS)
5681 where = htab->got->size;
5682 htab->got->size += need;
5686 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5687 if (need <= htab->got_gap)
5689 where = max_before_header - htab->got_gap;
5690 htab->got_gap -= need;
5694 if (htab->got->size + need > max_before_header
5695 && htab->got->size <= max_before_header)
5697 htab->got_gap = max_before_header - htab->got->size;
5698 htab->got->size = max_before_header + htab->got_header_size;
5700 where = htab->got->size;
5701 htab->got->size += need;
5707 /* Allocate space in associated reloc sections for dynamic relocs. */
5710 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5712 struct bfd_link_info *info = inf;
5713 struct ppc_elf_link_hash_entry *eh;
5714 struct ppc_elf_link_hash_table *htab;
5715 struct elf_dyn_relocs *p;
5717 if (h->root.type == bfd_link_hash_indirect)
5720 htab = ppc_elf_hash_table (info);
5721 if (htab->elf.dynamic_sections_created
5722 || h->type == STT_GNU_IFUNC)
5724 struct plt_entry *ent;
5725 bfd_boolean doneone = FALSE;
5726 bfd_vma plt_offset = 0, glink_offset = 0;
5729 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5730 if (ent->plt.refcount > 0)
5732 /* Make sure this symbol is output as a dynamic symbol. */
5733 if (h->dynindx == -1
5736 && htab->elf.dynamic_sections_created)
5738 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5742 dyn = htab->elf.dynamic_sections_created;
5744 || h->type == STT_GNU_IFUNC
5745 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5747 asection *s = htab->plt;
5748 if (!dyn || h->dynindx == -1)
5751 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5755 plt_offset = s->size;
5758 ent->plt.offset = plt_offset;
5761 if (!doneone || info->shared)
5763 glink_offset = s->size;
5764 s->size += GLINK_ENTRY_SIZE;
5765 if (h == htab->tls_get_addr
5766 && !htab->params->no_tls_get_addr_opt)
5767 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5774 h->root.u.def.section = s;
5775 h->root.u.def.value = glink_offset;
5777 ent->glink_offset = glink_offset;
5779 if (htab->params->emit_stub_syms
5780 && !add_stub_sym (ent, h, info))
5787 /* If this is the first .plt entry, make room
5788 for the special first entry. */
5790 s->size += htab->plt_initial_entry_size;
5792 /* The PowerPC PLT is actually composed of two
5793 parts, the first part is 2 words (for a load
5794 and a jump), and then there is a remaining
5795 word available at the end. */
5796 plt_offset = (htab->plt_initial_entry_size
5797 + (htab->plt_slot_size
5799 - htab->plt_initial_entry_size)
5800 / htab->plt_entry_size)));
5802 /* If this symbol is not defined in a regular
5803 file, and we are not generating a shared
5804 library, then set the symbol to this location
5805 in the .plt. This is to avoid text
5806 relocations, and is required to make
5807 function pointers compare as equal between
5808 the normal executable and the shared library. */
5813 h->root.u.def.section = s;
5814 h->root.u.def.value = plt_offset;
5817 /* Make room for this entry. */
5818 s->size += htab->plt_entry_size;
5819 /* After the 8192nd entry, room for two entries
5821 if (htab->plt_type == PLT_OLD
5822 && (s->size - htab->plt_initial_entry_size)
5823 / htab->plt_entry_size
5824 > PLT_NUM_SINGLE_ENTRIES)
5825 s->size += htab->plt_entry_size;
5827 ent->plt.offset = plt_offset;
5830 /* We also need to make an entry in the .rela.plt section. */
5833 if (!htab->elf.dynamic_sections_created
5834 || h->dynindx == -1)
5835 htab->reliplt->size += sizeof (Elf32_External_Rela);
5838 htab->relplt->size += sizeof (Elf32_External_Rela);
5840 if (htab->plt_type == PLT_VXWORKS)
5842 /* Allocate space for the unloaded relocations. */
5844 && htab->elf.dynamic_sections_created)
5847 == (bfd_vma) htab->plt_initial_entry_size)
5849 htab->srelplt2->size
5850 += (sizeof (Elf32_External_Rela)
5851 * VXWORKS_PLTRESOLVE_RELOCS);
5854 htab->srelplt2->size
5855 += (sizeof (Elf32_External_Rela)
5856 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5859 /* Every PLT entry has an associated GOT entry in
5861 htab->sgotplt->size += 4;
5868 ent->plt.offset = (bfd_vma) -1;
5871 ent->plt.offset = (bfd_vma) -1;
5875 h->plt.plist = NULL;
5881 h->plt.plist = NULL;
5885 eh = (struct ppc_elf_link_hash_entry *) h;
5886 if (eh->elf.got.refcount > 0)
5891 /* Make sure this symbol is output as a dynamic symbol. */
5892 if (eh->elf.dynindx == -1
5893 && !eh->elf.forced_local
5894 && eh->elf.type != STT_GNU_IFUNC
5895 && htab->elf.dynamic_sections_created)
5897 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5902 if ((eh->tls_mask & TLS_TLS) != 0)
5904 if ((eh->tls_mask & TLS_LD) != 0)
5906 if (!eh->elf.def_dynamic)
5907 /* We'll just use htab->tlsld_got.offset. This should
5908 always be the case. It's a little odd if we have
5909 a local dynamic reloc against a non-local symbol. */
5910 htab->tlsld_got.refcount += 1;
5914 if ((eh->tls_mask & TLS_GD) != 0)
5916 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5918 if ((eh->tls_mask & TLS_DTPREL) != 0)
5924 eh->elf.got.offset = (bfd_vma) -1;
5927 eh->elf.got.offset = allocate_got (htab, need);
5928 dyn = htab->elf.dynamic_sections_created;
5930 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5931 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5932 || eh->elf.root.type != bfd_link_hash_undefweak))
5934 asection *rsec = htab->relgot;
5936 if (eh->elf.type == STT_GNU_IFUNC)
5937 rsec = htab->reliplt;
5938 /* All the entries we allocated need relocs.
5939 Except LD only needs one. */
5940 if ((eh->tls_mask & TLS_LD) != 0
5941 && eh->elf.def_dynamic)
5943 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5948 eh->elf.got.offset = (bfd_vma) -1;
5950 if (eh->dyn_relocs == NULL
5951 || !htab->elf.dynamic_sections_created)
5954 /* In the shared -Bsymbolic case, discard space allocated for
5955 dynamic pc-relative relocs against symbols which turn out to be
5956 defined in regular objects. For the normal shared case, discard
5957 space for relocs that have become local due to symbol visibility
5962 /* Relocs that use pc_count are those that appear on a call insn,
5963 or certain REL relocs (see must_be_dyn_reloc) that can be
5964 generated via assembly. We want calls to protected symbols to
5965 resolve directly to the function rather than going via the plt.
5966 If people want function pointer comparisons to work as expected
5967 then they should avoid writing weird assembly. */
5968 if (SYMBOL_CALLS_LOCAL (info, h))
5970 struct elf_dyn_relocs **pp;
5972 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5974 p->count -= p->pc_count;
5983 if (htab->is_vxworks)
5985 struct elf_dyn_relocs **pp;
5987 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5989 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5996 /* Discard relocs on undefined symbols that must be local. */
5997 if (eh->dyn_relocs != NULL
5998 && h->root.type == bfd_link_hash_undefined
5999 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6000 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6001 eh->dyn_relocs = NULL;
6003 /* Also discard relocs on undefined weak syms with non-default
6005 if (eh->dyn_relocs != NULL
6006 && h->root.type == bfd_link_hash_undefweak)
6008 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6009 eh->dyn_relocs = NULL;
6011 /* Make sure undefined weak symbols are output as a dynamic
6013 else if (h->dynindx == -1
6017 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6022 else if (ELIMINATE_COPY_RELOCS)
6024 /* For the non-shared case, discard space for relocs against
6025 symbols which turn out to need copy relocs or are not
6031 /* Make sure this symbol is output as a dynamic symbol.
6032 Undefined weak syms won't yet be marked as dynamic. */
6033 if (h->dynindx == -1
6034 && !h->forced_local)
6036 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6040 /* If that succeeded, we know we'll be keeping all the
6042 if (h->dynindx != -1)
6046 eh->dyn_relocs = NULL;
6051 /* Finally, allocate space. */
6052 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6054 asection *sreloc = elf_section_data (p->sec)->sreloc;
6055 if (eh->elf.type == STT_GNU_IFUNC)
6056 sreloc = htab->reliplt;
6057 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6063 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6064 read-only sections. */
6067 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6069 if (h->root.type == bfd_link_hash_indirect)
6072 if (readonly_dynrelocs (h))
6074 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6076 /* Not an error, just cut short the traversal. */
6082 static const unsigned char glink_eh_frame_cie[] =
6084 0, 0, 0, 16, /* length. */
6085 0, 0, 0, 0, /* id. */
6086 1, /* CIE version. */
6087 'z', 'R', 0, /* Augmentation string. */
6088 4, /* Code alignment. */
6089 0x7c, /* Data alignment. */
6091 1, /* Augmentation size. */
6092 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6093 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6096 /* Set the sizes of the dynamic sections. */
6099 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6100 struct bfd_link_info *info)
6102 struct ppc_elf_link_hash_table *htab;
6108 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6111 htab = ppc_elf_hash_table (info);
6112 BFD_ASSERT (htab->elf.dynobj != NULL);
6114 if (elf_hash_table (info)->dynamic_sections_created)
6116 /* Set the contents of the .interp section to the interpreter. */
6117 if (info->executable)
6119 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6120 BFD_ASSERT (s != NULL);
6121 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6122 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6126 if (htab->plt_type == PLT_OLD)
6127 htab->got_header_size = 16;
6128 else if (htab->plt_type == PLT_NEW)
6129 htab->got_header_size = 12;
6131 /* Set up .got offsets for local syms, and space for local dynamic
6133 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6135 bfd_signed_vma *local_got;
6136 bfd_signed_vma *end_local_got;
6137 struct plt_entry **local_plt;
6138 struct plt_entry **end_local_plt;
6140 bfd_size_type locsymcount;
6141 Elf_Internal_Shdr *symtab_hdr;
6143 if (!is_ppc_elf (ibfd))
6146 for (s = ibfd->sections; s != NULL; s = s->next)
6148 struct ppc_dyn_relocs *p;
6150 for (p = ((struct ppc_dyn_relocs *)
6151 elf_section_data (s)->local_dynrel);
6155 if (!bfd_is_abs_section (p->sec)
6156 && bfd_is_abs_section (p->sec->output_section))
6158 /* Input section has been discarded, either because
6159 it is a copy of a linkonce section or due to
6160 linker script /DISCARD/, so we'll be discarding
6163 else if (htab->is_vxworks
6164 && strcmp (p->sec->output_section->name,
6167 /* Relocations in vxworks .tls_vars sections are
6168 handled specially by the loader. */
6170 else if (p->count != 0)
6172 asection *sreloc = elf_section_data (p->sec)->sreloc;
6174 sreloc = htab->reliplt;
6175 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6176 if ((p->sec->output_section->flags
6177 & (SEC_READONLY | SEC_ALLOC))
6178 == (SEC_READONLY | SEC_ALLOC))
6179 info->flags |= DF_TEXTREL;
6184 local_got = elf_local_got_refcounts (ibfd);
6188 symtab_hdr = &elf_symtab_hdr (ibfd);
6189 locsymcount = symtab_hdr->sh_info;
6190 end_local_got = local_got + locsymcount;
6191 local_plt = (struct plt_entry **) end_local_got;
6192 end_local_plt = local_plt + locsymcount;
6193 lgot_masks = (char *) end_local_plt;
6195 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6198 unsigned int need = 0;
6199 if ((*lgot_masks & TLS_TLS) != 0)
6201 if ((*lgot_masks & TLS_GD) != 0)
6203 if ((*lgot_masks & TLS_LD) != 0)
6204 htab->tlsld_got.refcount += 1;
6205 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6207 if ((*lgot_masks & TLS_DTPREL) != 0)
6213 *local_got = (bfd_vma) -1;
6216 *local_got = allocate_got (htab, need);
6219 asection *srel = htab->relgot;
6220 if ((*lgot_masks & PLT_IFUNC) != 0)
6221 srel = htab->reliplt;
6222 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6227 *local_got = (bfd_vma) -1;
6229 if (htab->is_vxworks)
6232 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6233 for (; local_plt < end_local_plt; ++local_plt)
6235 struct plt_entry *ent;
6236 bfd_boolean doneone = FALSE;
6237 bfd_vma plt_offset = 0, glink_offset = 0;
6239 for (ent = *local_plt; ent != NULL; ent = ent->next)
6240 if (ent->plt.refcount > 0)
6246 plt_offset = s->size;
6249 ent->plt.offset = plt_offset;
6252 if (!doneone || info->shared)
6254 glink_offset = s->size;
6255 s->size += GLINK_ENTRY_SIZE;
6257 ent->glink_offset = glink_offset;
6261 htab->reliplt->size += sizeof (Elf32_External_Rela);
6266 ent->plt.offset = (bfd_vma) -1;
6270 /* Allocate space for global sym dynamic relocs. */
6271 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6273 if (htab->tlsld_got.refcount > 0)
6275 htab->tlsld_got.offset = allocate_got (htab, 8);
6277 htab->relgot->size += sizeof (Elf32_External_Rela);
6280 htab->tlsld_got.offset = (bfd_vma) -1;
6282 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6284 unsigned int g_o_t = 32768;
6286 /* If we haven't allocated the header, do so now. When we get here,
6287 for old plt/got the got size will be 0 to 32764 (not allocated),
6288 or 32780 to 65536 (header allocated). For new plt/got, the
6289 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6290 if (htab->got->size <= 32768)
6292 g_o_t = htab->got->size;
6293 if (htab->plt_type == PLT_OLD)
6295 htab->got->size += htab->got_header_size;
6298 htab->elf.hgot->root.u.def.value = g_o_t;
6302 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6304 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6305 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6308 if (htab->glink != NULL
6309 && htab->glink->size != 0
6310 && htab->elf.dynamic_sections_created)
6312 htab->glink_pltresolve = htab->glink->size;
6313 /* Space for the branch table. */
6314 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6315 /* Pad out to align the start of PLTresolve. */
6316 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6318 htab->glink->size += GLINK_PLTRESOLVE;
6320 if (htab->params->emit_stub_syms)
6322 struct elf_link_hash_entry *sh;
6323 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6324 TRUE, FALSE, FALSE);
6327 if (sh->root.type == bfd_link_hash_new)
6329 sh->root.type = bfd_link_hash_defined;
6330 sh->root.u.def.section = htab->glink;
6331 sh->root.u.def.value = htab->glink_pltresolve;
6332 sh->ref_regular = 1;
6333 sh->def_regular = 1;
6334 sh->ref_regular_nonweak = 1;
6335 sh->forced_local = 1;
6338 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6339 TRUE, FALSE, FALSE);
6342 if (sh->root.type == bfd_link_hash_new)
6344 sh->root.type = bfd_link_hash_defined;
6345 sh->root.u.def.section = htab->glink;
6346 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6347 sh->ref_regular = 1;
6348 sh->def_regular = 1;
6349 sh->ref_regular_nonweak = 1;
6350 sh->forced_local = 1;
6356 if (htab->glink != NULL
6357 && htab->glink->size != 0
6358 && htab->glink_eh_frame != NULL
6359 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6360 && _bfd_elf_eh_frame_present (info))
6362 s = htab->glink_eh_frame;
6363 s->size = sizeof (glink_eh_frame_cie) + 20;
6367 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6372 /* We've now determined the sizes of the various dynamic sections.
6373 Allocate memory for them. */
6375 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6377 bfd_boolean strip_section = TRUE;
6379 if ((s->flags & SEC_LINKER_CREATED) == 0)
6385 /* We'd like to strip these sections if they aren't needed, but if
6386 we've exported dynamic symbols from them we must leave them.
6387 It's too late to tell BFD to get rid of the symbols. */
6388 if (htab->elf.hplt != NULL)
6389 strip_section = FALSE;
6390 /* Strip this section if we don't need it; see the
6393 else if (s == htab->iplt
6395 || s == htab->glink_eh_frame
6396 || s == htab->sgotplt
6398 || s == htab->dynbss
6399 || s == htab->dynsbss
6400 || s == htab->sdata[0].section
6401 || s == htab->sdata[1].section)
6403 /* Strip these too. */
6405 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6410 /* Remember whether there are any relocation sections. */
6413 /* We use the reloc_count field as a counter if we need
6414 to copy relocs into the output file. */
6420 /* It's not one of our sections, so don't allocate space. */
6424 if (s->size == 0 && strip_section)
6426 /* If we don't need this section, strip it from the
6427 output file. This is mostly to handle .rela.bss and
6428 .rela.plt. We must create both sections in
6429 create_dynamic_sections, because they must be created
6430 before the linker maps input sections to output
6431 sections. The linker does that before
6432 adjust_dynamic_symbol is called, and it is that
6433 function which decides whether anything needs to go
6434 into these sections. */
6435 s->flags |= SEC_EXCLUDE;
6439 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6442 /* Allocate memory for the section contents. */
6443 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6444 if (s->contents == NULL)
6448 if (htab->elf.dynamic_sections_created)
6450 /* Add some entries to the .dynamic section. We fill in the
6451 values later, in ppc_elf_finish_dynamic_sections, but we
6452 must add the entries now so that we get the correct size for
6453 the .dynamic section. The DT_DEBUG entry is filled in by the
6454 dynamic linker and used by the debugger. */
6455 #define add_dynamic_entry(TAG, VAL) \
6456 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6458 if (info->executable)
6460 if (!add_dynamic_entry (DT_DEBUG, 0))
6464 if (htab->plt != NULL && htab->plt->size != 0)
6466 if (!add_dynamic_entry (DT_PLTGOT, 0)
6467 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6468 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6469 || !add_dynamic_entry (DT_JMPREL, 0))
6473 if (htab->plt_type == PLT_NEW
6474 && htab->glink != NULL
6475 && htab->glink->size != 0)
6477 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6479 if (!htab->params->no_tls_get_addr_opt
6480 && htab->tls_get_addr != NULL
6481 && htab->tls_get_addr->plt.plist != NULL
6482 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6488 if (!add_dynamic_entry (DT_RELA, 0)
6489 || !add_dynamic_entry (DT_RELASZ, 0)
6490 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6494 /* If any dynamic relocs apply to a read-only section, then we
6495 need a DT_TEXTREL entry. */
6496 if ((info->flags & DF_TEXTREL) == 0)
6497 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6500 if ((info->flags & DF_TEXTREL) != 0)
6502 if (!add_dynamic_entry (DT_TEXTREL, 0))
6505 if (htab->is_vxworks
6506 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6509 #undef add_dynamic_entry
6511 if (htab->glink_eh_frame != NULL
6512 && htab->glink_eh_frame->contents != NULL)
6514 unsigned char *p = htab->glink_eh_frame->contents;
6517 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6518 /* CIE length (rewrite in case little-endian). */
6519 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6520 p += sizeof (glink_eh_frame_cie);
6522 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6523 bfd_put_32 (htab->elf.dynobj, val, p);
6526 val = p - htab->glink_eh_frame->contents;
6527 bfd_put_32 (htab->elf.dynobj, val, p);
6529 /* Offset to .glink. Set later. */
6532 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6538 && htab->elf.dynamic_sections_created)
6540 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6542 *p++ = DW_CFA_advance_loc + adv;
6545 *p++ = DW_CFA_advance_loc1;
6548 else if (adv < 65536)
6550 *p++ = DW_CFA_advance_loc2;
6551 bfd_put_16 (htab->elf.dynobj, adv, p);
6556 *p++ = DW_CFA_advance_loc4;
6557 bfd_put_32 (htab->elf.dynobj, adv, p);
6560 *p++ = DW_CFA_register;
6563 *p++ = DW_CFA_advance_loc + 4;
6564 *p++ = DW_CFA_restore_extended;
6567 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6568 == htab->glink_eh_frame->size);
6574 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6575 if it looks like nothing is using them. */
6578 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6580 struct elf_link_hash_entry *sda = lsect->sym;
6582 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6586 s = bfd_get_section_by_name (output_bfd, lsect->name);
6587 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6589 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6590 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6592 sda->def_regular = 0;
6593 /* This is somewhat magic. See elf_link_output_extsym. */
6594 sda->ref_dynamic = 1;
6595 sda->forced_local = 0;
6602 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6604 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6608 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6609 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6614 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6617 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6619 if (h->plt.plist != NULL
6621 && (!h->pointer_equality_needed
6622 || !h->ref_regular_nonweak))
6625 return _bfd_elf_hash_symbol (h);
6628 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6630 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6631 used for some functions that are allowed to break the ABI). */
6632 static const int shared_stub_entry[] =
6634 0x7c0802a6, /* mflr 0 */
6635 0x429f0005, /* bcl 20, 31, .Lxxx */
6636 0x7d8802a6, /* mflr 12 */
6637 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6638 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6639 0x7c0803a6, /* mtlr 0 */
6640 0x7d8903a6, /* mtctr 12 */
6641 0x4e800420, /* bctr */
6644 static const int stub_entry[] =
6646 0x3d800000, /* lis 12,xxx@ha */
6647 0x398c0000, /* addi 12,12,xxx@l */
6648 0x7d8903a6, /* mtctr 12 */
6649 0x4e800420, /* bctr */
6652 struct ppc_elf_relax_info
6654 unsigned int workaround_size;
6657 /* This function implements long branch trampolines, and the ppc476
6658 icache bug workaround. Any section needing trampolines or patch
6659 space for the workaround has its size extended so that we can
6660 add trampolines at the end of the section. */
6663 ppc_elf_relax_section (bfd *abfd,
6665 struct bfd_link_info *link_info,
6670 struct one_fixup *next;
6672 /* Final link, can use the symbol offset. For a
6673 relocatable link we use the symbol's index. */
6678 Elf_Internal_Shdr *symtab_hdr;
6679 bfd_byte *contents = NULL;
6680 Elf_Internal_Sym *isymbuf = NULL;
6681 Elf_Internal_Rela *internal_relocs = NULL;
6682 Elf_Internal_Rela *irel, *irelend = NULL;
6683 struct one_fixup *fixups = NULL;
6684 struct ppc_elf_relax_info *relax_info = NULL;
6685 unsigned changes = 0;
6686 bfd_boolean workaround_change;
6687 struct ppc_elf_link_hash_table *htab;
6688 bfd_size_type trampbase, trampoff, newsize;
6690 bfd_boolean maybe_pasted;
6694 /* No need to do anything with non-alloc or non-code sections. */
6695 if ((isec->flags & SEC_ALLOC) == 0
6696 || (isec->flags & SEC_CODE) == 0
6697 || (isec->flags & SEC_LINKER_CREATED) != 0
6701 /* We cannot represent the required PIC relocs in the output, so don't
6702 do anything. The linker doesn't support mixing -shared and -r
6704 if (link_info->relocatable && link_info->shared)
6707 htab = ppc_elf_hash_table (link_info);
6711 isec->size = (isec->size + 3) & -4;
6712 if (isec->rawsize == 0)
6713 isec->rawsize = isec->size;
6714 trampbase = isec->size;
6716 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6717 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6718 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6720 if (htab->params->ppc476_workaround)
6722 if (elf_section_data (isec)->sec_info == NULL)
6724 elf_section_data (isec)->sec_info
6725 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6726 if (elf_section_data (isec)->sec_info == NULL)
6729 relax_info = elf_section_data (isec)->sec_info;
6730 trampbase -= relax_info->workaround_size;
6733 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6734 || strcmp (isec->output_section->name, ".fini") == 0);
6735 /* Space for a branch around any trampolines. */
6736 trampoff = trampbase;
6737 if (maybe_pasted && trampbase == isec->rawsize)
6740 symtab_hdr = &elf_symtab_hdr (abfd);
6742 if (htab->params->branch_trampolines)
6744 /* Get a copy of the native relocations. */
6745 if (isec->reloc_count != 0)
6747 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6748 link_info->keep_memory);
6749 if (internal_relocs == NULL)
6753 got2 = bfd_get_section_by_name (abfd, ".got2");
6755 irelend = internal_relocs + isec->reloc_count;
6756 for (irel = internal_relocs; irel < irelend; irel++)
6758 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6761 struct one_fixup *f;
6762 size_t insn_offset = 0;
6763 bfd_vma max_branch_offset, val;
6766 struct elf_link_hash_entry *h;
6767 struct plt_entry **plist;
6768 unsigned char sym_type;
6773 case R_PPC_LOCAL24PC:
6774 case R_PPC_PLTREL24:
6775 max_branch_offset = 1 << 25;
6779 case R_PPC_REL14_BRTAKEN:
6780 case R_PPC_REL14_BRNTAKEN:
6781 max_branch_offset = 1 << 15;
6788 /* Get the value of the symbol referred to by the reloc. */
6790 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6792 /* A local symbol. */
6793 Elf_Internal_Sym *isym;
6795 /* Read this BFD's local symbols. */
6796 if (isymbuf == NULL)
6798 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6799 if (isymbuf == NULL)
6800 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6801 symtab_hdr->sh_info, 0,
6806 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6807 if (isym->st_shndx == SHN_UNDEF)
6808 tsec = bfd_und_section_ptr;
6809 else if (isym->st_shndx == SHN_ABS)
6810 tsec = bfd_abs_section_ptr;
6811 else if (isym->st_shndx == SHN_COMMON)
6812 tsec = bfd_com_section_ptr;
6814 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6816 toff = isym->st_value;
6817 sym_type = ELF_ST_TYPE (isym->st_info);
6821 /* Global symbol handling. */
6824 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6825 h = elf_sym_hashes (abfd)[indx];
6827 while (h->root.type == bfd_link_hash_indirect
6828 || h->root.type == bfd_link_hash_warning)
6829 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6831 if (h->root.type == bfd_link_hash_defined
6832 || h->root.type == bfd_link_hash_defweak)
6834 tsec = h->root.u.def.section;
6835 toff = h->root.u.def.value;
6837 else if (h->root.type == bfd_link_hash_undefined
6838 || h->root.type == bfd_link_hash_undefweak)
6840 tsec = bfd_und_section_ptr;
6841 toff = link_info->relocatable ? indx : 0;
6846 /* If this branch is to __tls_get_addr then we may later
6847 optimise away the call. We won't be needing a long-
6848 branch stub in that case. */
6849 if (link_info->executable
6850 && !link_info->relocatable
6851 && h == htab->tls_get_addr
6852 && irel != internal_relocs)
6854 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6855 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6856 unsigned int tls_mask = 0;
6858 /* The previous reloc should be one of R_PPC_TLSGD or
6859 R_PPC_TLSLD, or for older object files, a reloc
6860 on the __tls_get_addr arg setup insn. Get tls
6861 mask bits from the symbol on that reloc. */
6862 if (t_symndx < symtab_hdr->sh_info)
6864 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6866 if (local_got_offsets != NULL)
6868 struct plt_entry **local_plt = (struct plt_entry **)
6869 (local_got_offsets + symtab_hdr->sh_info);
6870 char *lgot_masks = (char *)
6871 (local_plt + symtab_hdr->sh_info);
6872 tls_mask = lgot_masks[t_symndx];
6877 struct elf_link_hash_entry *th
6878 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6880 while (th->root.type == bfd_link_hash_indirect
6881 || th->root.type == bfd_link_hash_warning)
6882 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6885 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6888 /* The mask bits tell us if the call will be
6890 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6891 && (t_rtype == R_PPC_TLSGD
6892 || t_rtype == R_PPC_GOT_TLSGD16
6893 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6895 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6896 && (t_rtype == R_PPC_TLSLD
6897 || t_rtype == R_PPC_GOT_TLSLD16
6898 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6905 /* The condition here under which we call find_plt_ent must
6906 match that in relocate_section. If we call find_plt_ent here
6907 but not in relocate_section, or vice versa, then the branch
6908 destination used here may be incorrect. */
6912 /* We know is_branch_reloc (r_type) is true. */
6913 if (h->type == STT_GNU_IFUNC
6914 || r_type == R_PPC_PLTREL24)
6915 plist = &h->plt.plist;
6917 else if (sym_type == STT_GNU_IFUNC
6918 && elf_local_got_offsets (abfd) != NULL)
6920 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6921 struct plt_entry **local_plt = (struct plt_entry **)
6922 (local_got_offsets + symtab_hdr->sh_info);
6923 plist = local_plt + ELF32_R_SYM (irel->r_info);
6928 struct plt_entry *ent;
6930 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6931 addend = irel->r_addend;
6932 ent = find_plt_ent (plist, got2, addend);
6935 if (htab->plt_type == PLT_NEW
6937 || !htab->elf.dynamic_sections_created
6938 || h->dynindx == -1)
6941 toff = ent->glink_offset;
6946 toff = ent->plt.offset;
6951 /* If the branch and target are in the same section, you have
6952 no hope of adding stubs. We'll error out later should the
6957 /* There probably isn't any reason to handle symbols in
6958 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6959 attribute for a code section, and we are only looking at
6960 branches. However, implement it correctly here as a
6961 reference for other target relax_section functions. */
6962 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6964 /* At this stage in linking, no SEC_MERGE symbol has been
6965 adjusted, so all references to such symbols need to be
6966 passed through _bfd_merged_section_offset. (Later, in
6967 relocate_section, all SEC_MERGE symbols *except* for
6968 section symbols have been adjusted.)
6970 gas may reduce relocations against symbols in SEC_MERGE
6971 sections to a relocation against the section symbol when
6972 the original addend was zero. When the reloc is against
6973 a section symbol we should include the addend in the
6974 offset passed to _bfd_merged_section_offset, since the
6975 location of interest is the original symbol. On the
6976 other hand, an access to "sym+addend" where "sym" is not
6977 a section symbol should not include the addend; Such an
6978 access is presumed to be an offset from "sym"; The
6979 location of interest is just "sym". */
6980 if (sym_type == STT_SECTION)
6981 toff += irel->r_addend;
6984 = _bfd_merged_section_offset (abfd, &tsec,
6985 elf_section_data (tsec)->sec_info,
6988 if (sym_type != STT_SECTION)
6989 toff += irel->r_addend;
6991 /* PLTREL24 addends are special. */
6992 else if (r_type != R_PPC_PLTREL24)
6993 toff += irel->r_addend;
6995 /* Attempted -shared link of non-pic code loses. */
6996 if ((!link_info->relocatable
6997 && tsec == bfd_und_section_ptr)
6998 || tsec->output_section == NULL
6999 || (tsec->owner != NULL
7000 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7003 roff = irel->r_offset;
7005 /* If the branch is in range, no need to do anything. */
7006 if (tsec != bfd_und_section_ptr
7007 && (!link_info->relocatable
7008 /* A relocatable link may have sections moved during
7009 final link, so do not presume they remain in range. */
7010 || tsec->output_section == isec->output_section))
7012 bfd_vma symaddr, reladdr;
7014 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7015 reladdr = isec->output_section->vma + isec->output_offset + roff;
7016 if (symaddr - reladdr + max_branch_offset
7017 < 2 * max_branch_offset)
7021 /* Look for an existing fixup to this address. */
7022 for (f = fixups; f ; f = f->next)
7023 if (f->tsec == tsec && f->toff == toff)
7029 unsigned long stub_rtype;
7031 val = trampoff - roff;
7032 if (val >= max_branch_offset)
7033 /* Oh dear, we can't reach a trampoline. Don't try to add
7034 one. We'll report an error later. */
7037 if (link_info->shared)
7039 size = 4 * ARRAY_SIZE (shared_stub_entry);
7044 size = 4 * ARRAY_SIZE (stub_entry);
7047 stub_rtype = R_PPC_RELAX;
7048 if (tsec == htab->plt
7049 || tsec == htab->glink)
7051 stub_rtype = R_PPC_RELAX_PLT;
7052 if (r_type == R_PPC_PLTREL24)
7053 stub_rtype = R_PPC_RELAX_PLTREL24;
7056 /* Hijack the old relocation. Since we need two
7057 relocations for this use a "composite" reloc. */
7058 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7060 irel->r_offset = trampoff + insn_offset;
7061 if (r_type == R_PPC_PLTREL24
7062 && stub_rtype != R_PPC_RELAX_PLTREL24)
7065 /* Record the fixup so we don't do it again this section. */
7066 f = bfd_malloc (sizeof (*f));
7070 f->trampoff = trampoff;
7078 val = f->trampoff - roff;
7079 if (val >= max_branch_offset)
7082 /* Nop out the reloc, since we're finalizing things here. */
7083 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7086 /* Get the section contents. */
7087 if (contents == NULL)
7089 /* Get cached copy if it exists. */
7090 if (elf_section_data (isec)->this_hdr.contents != NULL)
7091 contents = elf_section_data (isec)->this_hdr.contents;
7092 /* Go get them off disk. */
7093 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7097 /* Fix up the existing branch to hit the trampoline. */
7098 hit_addr = contents + roff;
7102 case R_PPC_LOCAL24PC:
7103 case R_PPC_PLTREL24:
7104 t0 = bfd_get_32 (abfd, hit_addr);
7106 t0 |= val & 0x3fffffc;
7107 bfd_put_32 (abfd, t0, hit_addr);
7111 case R_PPC_REL14_BRTAKEN:
7112 case R_PPC_REL14_BRNTAKEN:
7113 t0 = bfd_get_32 (abfd, hit_addr);
7116 bfd_put_32 (abfd, t0, hit_addr);
7121 while (fixups != NULL)
7123 struct one_fixup *f = fixups;
7124 fixups = fixups->next;
7129 workaround_change = FALSE;
7131 if (htab->params->ppc476_workaround
7132 && (!link_info->relocatable
7133 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7135 bfd_vma addr, end_addr;
7136 unsigned int crossings;
7137 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7139 addr = isec->output_section->vma + isec->output_offset;
7140 end_addr = addr + trampoff - 1;
7142 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7145 /* Keep space aligned, to ensure the patch code itself does
7146 not cross a page. Don't decrease size calculated on a
7147 previous pass as otherwise we might never settle on a layout. */
7148 newsize = 15 - (end_addr & 15);
7149 newsize += crossings * 16;
7150 if (relax_info->workaround_size < newsize)
7152 relax_info->workaround_size = newsize;
7153 workaround_change = TRUE;
7155 /* Ensure relocate_section is called. */
7156 isec->flags |= SEC_RELOC;
7158 newsize = trampoff + relax_info->workaround_size;
7161 if (changes || workaround_change)
7162 isec->size = newsize;
7165 && symtab_hdr->contents != (unsigned char *) isymbuf)
7167 if (! link_info->keep_memory)
7171 /* Cache the symbols for elf_link_input_bfd. */
7172 symtab_hdr->contents = (unsigned char *) isymbuf;
7176 if (contents != NULL
7177 && elf_section_data (isec)->this_hdr.contents != contents)
7179 if (!changes && !link_info->keep_memory)
7183 /* Cache the section contents for elf_link_input_bfd. */
7184 elf_section_data (isec)->this_hdr.contents = contents;
7190 /* Append sufficient NOP relocs so we can write out relocation
7191 information for the trampolines. */
7192 Elf_Internal_Shdr *rel_hdr;
7193 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7194 * sizeof (*new_relocs));
7199 memcpy (new_relocs, internal_relocs,
7200 isec->reloc_count * sizeof (*new_relocs));
7201 for (ix = changes; ix--;)
7203 irel = new_relocs + ix + isec->reloc_count;
7205 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7207 if (internal_relocs != elf_section_data (isec)->relocs)
7208 free (internal_relocs);
7209 elf_section_data (isec)->relocs = new_relocs;
7210 isec->reloc_count += changes;
7211 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7212 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7214 else if (internal_relocs != NULL
7215 && elf_section_data (isec)->relocs != internal_relocs)
7216 free (internal_relocs);
7218 *again = changes != 0 || workaround_change;
7222 while (fixups != NULL)
7224 struct one_fixup *f = fixups;
7225 fixups = fixups->next;
7228 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7230 if (contents != NULL
7231 && elf_section_data (isec)->this_hdr.contents != contents)
7233 if (internal_relocs != NULL
7234 && elf_section_data (isec)->relocs != internal_relocs)
7235 free (internal_relocs);
7239 /* What to do when ld finds relocations against symbols defined in
7240 discarded sections. */
7243 ppc_elf_action_discarded (asection *sec)
7245 if (strcmp (".fixup", sec->name) == 0)
7248 if (strcmp (".got2", sec->name) == 0)
7251 return _bfd_elf_default_action_discarded (sec);
7254 /* Fill in the address for a pointer generated in a linker section. */
7257 elf_finish_pointer_linker_section (bfd *input_bfd,
7258 elf_linker_section_t *lsect,
7259 struct elf_link_hash_entry *h,
7261 const Elf_Internal_Rela *rel)
7263 elf_linker_section_pointers_t *linker_section_ptr;
7265 BFD_ASSERT (lsect != NULL);
7269 /* Handle global symbol. */
7270 struct ppc_elf_link_hash_entry *eh;
7272 eh = (struct ppc_elf_link_hash_entry *) h;
7273 BFD_ASSERT (eh->elf.def_regular);
7274 linker_section_ptr = eh->linker_section_pointer;
7278 /* Handle local symbol. */
7279 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7281 BFD_ASSERT (is_ppc_elf (input_bfd));
7282 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7283 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7286 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7289 BFD_ASSERT (linker_section_ptr != NULL);
7291 /* Offset will always be a multiple of four, so use the bottom bit
7292 as a "written" flag. */
7293 if ((linker_section_ptr->offset & 1) == 0)
7295 bfd_put_32 (lsect->section->owner,
7296 relocation + linker_section_ptr->addend,
7297 lsect->section->contents + linker_section_ptr->offset);
7298 linker_section_ptr->offset += 1;
7301 relocation = (lsect->section->output_section->vma
7302 + lsect->section->output_offset
7303 + linker_section_ptr->offset - 1
7304 - SYM_VAL (lsect->sym));
7308 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7309 lsect->name, (long) relocation, (long) relocation);
7315 #define PPC_LO(v) ((v) & 0xffff)
7316 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7317 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7320 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7321 struct bfd_link_info *info)
7323 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7324 bfd *output_bfd = info->output_bfd;
7327 plt = ((ent->plt.offset & ~1)
7328 + plt_sec->output_section->vma
7329 + plt_sec->output_offset);
7335 if (ent->addend >= 32768)
7337 + ent->sec->output_section->vma
7338 + ent->sec->output_offset);
7339 else if (htab->elf.hgot != NULL)
7340 got = SYM_VAL (htab->elf.hgot);
7344 if (plt + 0x8000 < 0x10000)
7346 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7348 bfd_put_32 (output_bfd, MTCTR_11, p);
7350 bfd_put_32 (output_bfd, BCTR, p);
7352 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7357 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7359 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7361 bfd_put_32 (output_bfd, MTCTR_11, p);
7363 bfd_put_32 (output_bfd, BCTR, p);
7369 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7371 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7373 bfd_put_32 (output_bfd, MTCTR_11, p);
7375 bfd_put_32 (output_bfd, BCTR, p);
7380 /* Return true if symbol is defined statically. */
7383 is_static_defined (struct elf_link_hash_entry *h)
7385 return ((h->root.type == bfd_link_hash_defined
7386 || h->root.type == bfd_link_hash_defweak)
7387 && h->root.u.def.section != NULL
7388 && h->root.u.def.section->output_section != NULL);
7391 /* If INSN is an opcode that may be used with an @tls operand, return
7392 the transformed insn for TLS optimisation, otherwise return 0. If
7393 REG is non-zero only match an insn with RB or RA equal to REG. */
7396 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7400 if ((insn & (0x3f << 26)) != 31 << 26)
7403 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7404 rtra = insn & ((1 << 26) - (1 << 16));
7405 else if (((insn >> 16) & 0x1f) == reg)
7406 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7410 if ((insn & (0x3ff << 1)) == 266 << 1)
7413 else if ((insn & (0x1f << 1)) == 23 << 1
7414 && ((insn & (0x1f << 6)) < 14 << 6
7415 || ((insn & (0x1f << 6)) >= 16 << 6
7416 && (insn & (0x1f << 6)) < 24 << 6)))
7417 /* load and store indexed -> dform. */
7418 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7419 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7420 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7421 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7422 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7424 insn = (58 << 26) | 2;
7431 /* If INSN is an opcode that may be used with an @tprel operand, return
7432 the transformed insn for an undefined weak symbol, ie. with the
7433 thread pointer REG operand removed. Otherwise return 0. */
7436 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7438 if ((insn & (0x1f << 16)) == reg << 16
7439 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7440 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7441 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7442 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7443 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7444 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7445 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7446 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7447 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7448 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7449 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7450 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7451 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7452 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7453 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7454 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7456 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7457 && ((insn & 3) == 0 || (insn & 3) == 3))))
7459 insn &= ~(0x1f << 16);
7461 else if ((insn & (0x1f << 21)) == reg << 21
7462 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7463 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7464 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7466 insn &= ~(0x1f << 21);
7467 insn |= (insn & (0x1f << 16)) << 5;
7468 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7469 insn -= 2 >> 26; /* convert to ori,oris */
7477 is_insn_ds_form (unsigned int insn)
7479 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7480 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7481 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7482 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7486 is_insn_dq_form (unsigned int insn)
7488 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7491 /* The RELOCATE_SECTION function is called by the ELF backend linker
7492 to handle the relocations for a section.
7494 The relocs are always passed as Rela structures; if the section
7495 actually uses Rel structures, the r_addend field will always be
7498 This function is responsible for adjust the section contents as
7499 necessary, and (if using Rela relocs and generating a
7500 relocatable output file) adjusting the reloc addend as
7503 This function does not have to worry about setting the reloc
7504 address or the reloc symbol index.
7506 LOCAL_SYMS is a pointer to the swapped in local symbols.
7508 LOCAL_SECTIONS is an array giving the section in the input file
7509 corresponding to the st_shndx field of each local symbol.
7511 The global hash table entry for the global symbols can be found
7512 via elf_sym_hashes (input_bfd).
7514 When generating relocatable output, this function must handle
7515 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7516 going to be the section symbol corresponding to the output
7517 section, which means that the addend must be adjusted
7521 ppc_elf_relocate_section (bfd *output_bfd,
7522 struct bfd_link_info *info,
7524 asection *input_section,
7526 Elf_Internal_Rela *relocs,
7527 Elf_Internal_Sym *local_syms,
7528 asection **local_sections)
7530 Elf_Internal_Shdr *symtab_hdr;
7531 struct elf_link_hash_entry **sym_hashes;
7532 struct ppc_elf_link_hash_table *htab;
7533 Elf_Internal_Rela *rel;
7534 Elf_Internal_Rela *relend;
7535 Elf_Internal_Rela outrel;
7537 bfd_vma *local_got_offsets;
7538 bfd_boolean ret = TRUE;
7539 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7540 bfd_boolean is_vxworks_tls;
7543 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7544 "%ld relocations%s",
7545 input_bfd, input_section,
7546 (long) input_section->reloc_count,
7547 (info->relocatable) ? " (relocatable)" : "");
7550 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7552 /* Initialize howto table if not already done. */
7553 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7554 ppc_elf_howto_init ();
7556 htab = ppc_elf_hash_table (info);
7557 local_got_offsets = elf_local_got_offsets (input_bfd);
7558 symtab_hdr = &elf_symtab_hdr (input_bfd);
7559 sym_hashes = elf_sym_hashes (input_bfd);
7560 /* We have to handle relocations in vxworks .tls_vars sections
7561 specially, because the dynamic loader is 'weird'. */
7562 is_vxworks_tls = (htab->is_vxworks && info->shared
7563 && !strcmp (input_section->output_section->name,
7566 relend = relocs + input_section->reloc_count;
7567 for (; rel < relend; rel++)
7569 enum elf_ppc_reloc_type r_type;
7571 bfd_reloc_status_type r;
7572 Elf_Internal_Sym *sym;
7574 struct elf_link_hash_entry *h;
7575 const char *sym_name;
7576 reloc_howto_type *howto;
7577 unsigned long r_symndx;
7579 bfd_vma branch_bit, from;
7580 bfd_boolean unresolved_reloc;
7582 unsigned int tls_type, tls_mask, tls_gd;
7583 struct plt_entry **ifunc;
7584 struct reloc_howto_struct alt_howto;
7586 r_type = ELF32_R_TYPE (rel->r_info);
7590 unresolved_reloc = FALSE;
7592 r_symndx = ELF32_R_SYM (rel->r_info);
7594 if (r_symndx < symtab_hdr->sh_info)
7596 sym = local_syms + r_symndx;
7597 sec = local_sections[r_symndx];
7598 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7600 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7604 bfd_boolean ignored;
7606 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7607 r_symndx, symtab_hdr, sym_hashes,
7609 unresolved_reloc, warned, ignored);
7611 sym_name = h->root.root.string;
7614 if (sec != NULL && discarded_section (sec))
7616 /* For relocs against symbols from removed linkonce sections,
7617 or sections discarded by a linker script, we just want the
7618 section contents zeroed. Avoid any special processing. */
7620 if (r_type < R_PPC_max)
7621 howto = ppc_elf_howto_table[r_type];
7622 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7623 rel, 1, relend, howto, 0, contents);
7626 if (info->relocatable)
7629 && r_type == R_PPC_PLTREL24
7630 && rel->r_addend != 0)
7632 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7633 addend specifies the GOT pointer offset within .got2. */
7634 rel->r_addend += got2->output_offset;
7636 if (r_type != R_PPC_RELAX_PLT
7637 && r_type != R_PPC_RELAX_PLTREL24
7638 && r_type != R_PPC_RELAX)
7642 /* TLS optimizations. Replace instruction sequences and relocs
7643 based on information we collected in tls_optimize. We edit
7644 RELOCS so that --emit-relocs will output something sensible
7645 for the final instruction stream. */
7649 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7650 else if (local_got_offsets != NULL)
7652 struct plt_entry **local_plt;
7655 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7656 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7657 tls_mask = lgot_masks[r_symndx];
7660 /* Ensure reloc mapping code below stays sane. */
7661 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7662 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7663 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7664 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7665 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7666 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7667 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7668 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7675 case R_PPC_GOT_TPREL16:
7676 case R_PPC_GOT_TPREL16_LO:
7677 if ((tls_mask & TLS_TLS) != 0
7678 && (tls_mask & TLS_TPREL) == 0)
7682 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7684 insn |= 0x3c020000; /* addis 0,2,0 */
7685 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7686 r_type = R_PPC_TPREL16_HA;
7687 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7692 if ((tls_mask & TLS_TLS) != 0
7693 && (tls_mask & TLS_TPREL) == 0)
7697 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7698 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7701 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7702 r_type = R_PPC_TPREL16_LO;
7703 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7705 /* Was PPC_TLS which sits on insn boundary, now
7706 PPC_TPREL16_LO which is at low-order half-word. */
7707 rel->r_offset += d_offset;
7711 case R_PPC_GOT_TLSGD16_HI:
7712 case R_PPC_GOT_TLSGD16_HA:
7713 tls_gd = TLS_TPRELGD;
7714 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7718 case R_PPC_GOT_TLSLD16_HI:
7719 case R_PPC_GOT_TLSLD16_HA:
7720 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7723 if ((tls_mask & tls_gd) != 0)
7724 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7725 + R_PPC_GOT_TPREL16);
7728 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7729 rel->r_offset -= d_offset;
7730 r_type = R_PPC_NONE;
7732 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7736 case R_PPC_GOT_TLSGD16:
7737 case R_PPC_GOT_TLSGD16_LO:
7738 tls_gd = TLS_TPRELGD;
7739 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7743 case R_PPC_GOT_TLSLD16:
7744 case R_PPC_GOT_TLSLD16_LO:
7745 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7747 unsigned int insn1, insn2;
7751 offset = (bfd_vma) -1;
7752 /* If not using the newer R_PPC_TLSGD/LD to mark
7753 __tls_get_addr calls, we must trust that the call
7754 stays with its arg setup insns, ie. that the next
7755 reloc is the __tls_get_addr call associated with
7756 the current reloc. Edit both insns. */
7757 if (input_section->has_tls_get_addr_call
7759 && branch_reloc_hash_match (input_bfd, rel + 1,
7760 htab->tls_get_addr))
7761 offset = rel[1].r_offset;
7762 if ((tls_mask & tls_gd) != 0)
7765 insn1 = bfd_get_32 (output_bfd,
7766 contents + rel->r_offset - d_offset);
7767 insn1 &= (1 << 26) - 1;
7768 insn1 |= 32 << 26; /* lwz */
7769 if (offset != (bfd_vma) -1)
7771 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7772 insn2 = 0x7c631214; /* add 3,3,2 */
7773 bfd_put_32 (output_bfd, insn2, contents + offset);
7775 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7776 + R_PPC_GOT_TPREL16);
7777 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7782 insn1 = 0x3c620000; /* addis 3,2,0 */
7785 /* Was an LD reloc. */
7787 r_symndx < symtab_hdr->sh_info;
7789 if (local_sections[r_symndx] == sec)
7791 if (r_symndx >= symtab_hdr->sh_info)
7792 r_symndx = STN_UNDEF;
7793 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7794 if (r_symndx != STN_UNDEF)
7795 rel->r_addend -= (local_syms[r_symndx].st_value
7796 + sec->output_offset
7797 + sec->output_section->vma);
7799 r_type = R_PPC_TPREL16_HA;
7800 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7801 if (offset != (bfd_vma) -1)
7803 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7804 rel[1].r_offset = offset + d_offset;
7805 rel[1].r_addend = rel->r_addend;
7806 insn2 = 0x38630000; /* addi 3,3,0 */
7807 bfd_put_32 (output_bfd, insn2, contents + offset);
7810 bfd_put_32 (output_bfd, insn1,
7811 contents + rel->r_offset - d_offset);
7814 /* We changed the symbol on an LD reloc. Start over
7815 in order to get h, sym, sec etc. right. */
7823 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7826 bfd_vma offset = rel->r_offset;
7828 if ((tls_mask & TLS_TPRELGD) != 0)
7831 r_type = R_PPC_NONE;
7832 insn2 = 0x7c631214; /* add 3,3,2 */
7837 r_type = R_PPC_TPREL16_LO;
7838 rel->r_offset += d_offset;
7839 insn2 = 0x38630000; /* addi 3,3,0 */
7841 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7842 bfd_put_32 (output_bfd, insn2, contents + offset);
7843 /* Zap the reloc on the _tls_get_addr call too. */
7844 BFD_ASSERT (offset == rel[1].r_offset);
7845 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7850 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7855 r_symndx < symtab_hdr->sh_info;
7857 if (local_sections[r_symndx] == sec)
7859 if (r_symndx >= symtab_hdr->sh_info)
7860 r_symndx = STN_UNDEF;
7861 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7862 if (r_symndx != STN_UNDEF)
7863 rel->r_addend -= (local_syms[r_symndx].st_value
7864 + sec->output_offset
7865 + sec->output_section->vma);
7867 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7868 rel->r_offset += d_offset;
7869 insn2 = 0x38630000; /* addi 3,3,0 */
7870 bfd_put_32 (output_bfd, insn2,
7871 contents + rel->r_offset - d_offset);
7872 /* Zap the reloc on the _tls_get_addr call too. */
7873 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7874 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7881 /* Handle other relocations that tweak non-addend part of insn. */
7888 /* Branch taken prediction relocations. */
7889 case R_PPC_ADDR14_BRTAKEN:
7890 case R_PPC_REL14_BRTAKEN:
7891 branch_bit = BRANCH_PREDICT_BIT;
7894 /* Branch not taken prediction relocations. */
7895 case R_PPC_ADDR14_BRNTAKEN:
7896 case R_PPC_REL14_BRNTAKEN:
7900 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7901 insn &= ~BRANCH_PREDICT_BIT;
7904 from = (rel->r_offset
7905 + input_section->output_offset
7906 + input_section->output_section->vma);
7908 /* Invert 'y' bit if not the default. */
7909 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7910 insn ^= BRANCH_PREDICT_BIT;
7912 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7918 if (!htab->is_vxworks)
7920 struct plt_entry *ent;
7924 if (h->type == STT_GNU_IFUNC)
7925 ifunc = &h->plt.plist;
7927 else if (local_got_offsets != NULL
7928 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7930 struct plt_entry **local_plt;
7932 local_plt = (struct plt_entry **) (local_got_offsets
7933 + symtab_hdr->sh_info);
7934 ifunc = local_plt + r_symndx;
7940 || is_branch_reloc (r_type)))
7943 if (r_type == R_PPC_PLTREL24 && info->shared)
7944 addend = rel->r_addend;
7945 ent = find_plt_ent (ifunc, got2, addend);
7949 if (h == NULL && (ent->plt.offset & 1) == 0)
7951 Elf_Internal_Rela rela;
7954 rela.r_offset = (htab->iplt->output_section->vma
7955 + htab->iplt->output_offset
7957 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7958 rela.r_addend = relocation;
7959 loc = htab->reliplt->contents;
7960 loc += (htab->reliplt->reloc_count++
7961 * sizeof (Elf32_External_Rela));
7962 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7964 ent->plt.offset |= 1;
7966 if (h == NULL && (ent->glink_offset & 1) == 0)
7968 unsigned char *p = ((unsigned char *) htab->glink->contents
7969 + ent->glink_offset);
7970 write_glink_stub (ent, htab->iplt, p, info);
7971 ent->glink_offset |= 1;
7974 unresolved_reloc = FALSE;
7975 if (htab->plt_type == PLT_NEW
7976 || !htab->elf.dynamic_sections_created
7978 || h->dynindx == -1)
7979 relocation = (htab->glink->output_section->vma
7980 + htab->glink->output_offset
7981 + (ent->glink_offset & ~1));
7983 relocation = (htab->plt->output_section->vma
7984 + htab->plt->output_offset
7989 addend = rel->r_addend;
7992 if (r_type < R_PPC_max)
7993 howto = ppc_elf_howto_table[r_type];
7997 info->callbacks->einfo
7998 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
7999 input_bfd, (int) r_type, sym_name);
8001 bfd_set_error (bfd_error_bad_value);
8009 case R_PPC_EMB_MRKREF:
8010 case R_PPC_GNU_VTINHERIT:
8011 case R_PPC_GNU_VTENTRY:
8014 /* GOT16 relocations. Like an ADDR16 using the symbol's
8015 address in the GOT as relocation value instead of the
8016 symbol's value itself. Also, create a GOT entry for the
8017 symbol and put the symbol value there. */
8018 case R_PPC_GOT_TLSGD16:
8019 case R_PPC_GOT_TLSGD16_LO:
8020 case R_PPC_GOT_TLSGD16_HI:
8021 case R_PPC_GOT_TLSGD16_HA:
8022 tls_type = TLS_TLS | TLS_GD;
8025 case R_PPC_GOT_TLSLD16:
8026 case R_PPC_GOT_TLSLD16_LO:
8027 case R_PPC_GOT_TLSLD16_HI:
8028 case R_PPC_GOT_TLSLD16_HA:
8029 tls_type = TLS_TLS | TLS_LD;
8032 case R_PPC_GOT_TPREL16:
8033 case R_PPC_GOT_TPREL16_LO:
8034 case R_PPC_GOT_TPREL16_HI:
8035 case R_PPC_GOT_TPREL16_HA:
8036 tls_type = TLS_TLS | TLS_TPREL;
8039 case R_PPC_GOT_DTPREL16:
8040 case R_PPC_GOT_DTPREL16_LO:
8041 case R_PPC_GOT_DTPREL16_HI:
8042 case R_PPC_GOT_DTPREL16_HA:
8043 tls_type = TLS_TLS | TLS_DTPREL;
8047 case R_PPC_GOT16_LO:
8048 case R_PPC_GOT16_HI:
8049 case R_PPC_GOT16_HA:
8053 /* Relocation is to the entry for this symbol in the global
8059 if (htab->got == NULL)
8063 if (tls_type == (TLS_TLS | TLS_LD)
8065 || !h->def_dynamic))
8066 offp = &htab->tlsld_got.offset;
8070 dyn = htab->elf.dynamic_sections_created;
8071 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8073 && SYMBOL_REFERENCES_LOCAL (info, h)))
8074 /* This is actually a static link, or it is a
8075 -Bsymbolic link and the symbol is defined
8076 locally, or the symbol was forced to be local
8077 because of a version file. */
8081 BFD_ASSERT (h->dynindx != -1);
8083 unresolved_reloc = FALSE;
8085 offp = &h->got.offset;
8089 if (local_got_offsets == NULL)
8091 offp = &local_got_offsets[r_symndx];
8094 /* The offset must always be a multiple of 4. We use the
8095 least significant bit to record whether we have already
8096 processed this entry. */
8102 unsigned int tls_m = (tls_mask
8103 & (TLS_LD | TLS_GD | TLS_DTPREL
8104 | TLS_TPREL | TLS_TPRELGD));
8106 if (offp == &htab->tlsld_got.offset)
8112 /* We might have multiple got entries for this sym.
8113 Initialize them all. */
8118 if ((tls_m & TLS_LD) != 0)
8120 tls_ty = TLS_TLS | TLS_LD;
8123 else if ((tls_m & TLS_GD) != 0)
8125 tls_ty = TLS_TLS | TLS_GD;
8128 else if ((tls_m & TLS_DTPREL) != 0)
8130 tls_ty = TLS_TLS | TLS_DTPREL;
8131 tls_m &= ~TLS_DTPREL;
8133 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8135 tls_ty = TLS_TLS | TLS_TPREL;
8139 /* Generate relocs for the dynamic linker. */
8140 if ((info->shared || indx != 0)
8141 && (offp == &htab->tlsld_got.offset
8143 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8144 || h->root.type != bfd_link_hash_undefweak))
8146 asection *rsec = htab->relgot;
8150 rsec = htab->reliplt;
8151 outrel.r_offset = (htab->got->output_section->vma
8152 + htab->got->output_offset
8154 outrel.r_addend = 0;
8155 if (tls_ty & (TLS_LD | TLS_GD))
8157 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8158 if (tls_ty == (TLS_TLS | TLS_GD))
8160 loc = rsec->contents;
8161 loc += (rsec->reloc_count++
8162 * sizeof (Elf32_External_Rela));
8163 bfd_elf32_swap_reloca_out (output_bfd,
8165 outrel.r_offset += 4;
8167 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8170 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8171 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8172 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8173 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8175 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8176 else if (ifunc != NULL)
8177 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8179 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8180 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8182 outrel.r_addend += relocation;
8183 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8184 outrel.r_addend -= htab->elf.tls_sec->vma;
8186 loc = rsec->contents;
8187 loc += (rsec->reloc_count++
8188 * sizeof (Elf32_External_Rela));
8189 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8192 /* Init the .got section contents if we're not
8193 emitting a reloc. */
8196 bfd_vma value = relocation;
8198 if (tls_ty == (TLS_TLS | TLS_LD))
8200 else if (tls_ty != 0)
8202 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8203 if (tls_ty == (TLS_TLS | TLS_TPREL))
8204 value += DTP_OFFSET - TP_OFFSET;
8206 if (tls_ty == (TLS_TLS | TLS_GD))
8208 bfd_put_32 (output_bfd, value,
8209 htab->got->contents + off + 4);
8213 bfd_put_32 (output_bfd, value,
8214 htab->got->contents + off);
8218 if (tls_ty & (TLS_LD | TLS_GD))
8227 if (off >= (bfd_vma) -2)
8230 if ((tls_type & TLS_TLS) != 0)
8232 if (tls_type != (TLS_TLS | TLS_LD))
8234 if ((tls_mask & TLS_LD) != 0
8236 || !h->def_dynamic))
8238 if (tls_type != (TLS_TLS | TLS_GD))
8240 if ((tls_mask & TLS_GD) != 0)
8242 if (tls_type != (TLS_TLS | TLS_DTPREL))
8244 if ((tls_mask & TLS_DTPREL) != 0)
8251 relocation = (htab->got->output_section->vma
8252 + htab->got->output_offset
8254 - SYM_VAL (htab->elf.hgot));
8256 /* Addends on got relocations don't make much sense.
8257 x+off@got is actually x@got+off, and since the got is
8258 generated by a hash table traversal, the value in the
8259 got at entry m+n bears little relation to the entry m. */
8261 info->callbacks->einfo
8262 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8263 input_bfd, input_section, rel->r_offset,
8269 /* Relocations that need no special processing. */
8270 case R_PPC_LOCAL24PC:
8271 /* It makes no sense to point a local relocation
8272 at a symbol not in this object. */
8273 if (unresolved_reloc)
8275 if (! (*info->callbacks->undefined_symbol) (info,
8276 h->root.root.string,
8286 case R_PPC_DTPREL16:
8287 case R_PPC_DTPREL16_LO:
8288 case R_PPC_DTPREL16_HI:
8289 case R_PPC_DTPREL16_HA:
8290 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8293 /* Relocations that may need to be propagated if this is a shared
8296 case R_PPC_TPREL16_LO:
8297 case R_PPC_TPREL16_HI:
8298 case R_PPC_TPREL16_HA:
8300 && h->root.type == bfd_link_hash_undefweak
8301 && h->dynindx == -1)
8303 /* Make this relocation against an undefined weak symbol
8304 resolve to zero. This is really just a tweak, since
8305 code using weak externs ought to check that they are
8306 defined before using them. */
8307 bfd_byte *p = contents + rel->r_offset - d_offset;
8308 unsigned int insn = bfd_get_32 (output_bfd, p);
8309 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8311 bfd_put_32 (output_bfd, insn, p);
8314 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8315 /* The TPREL16 relocs shouldn't really be used in shared
8316 libs as they will result in DT_TEXTREL being set, but
8317 support them anyway. */
8321 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8324 case R_PPC_DTPREL32:
8325 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8328 case R_PPC_DTPMOD32:
8334 case R_PPC_REL16_LO:
8335 case R_PPC_REL16_HI:
8336 case R_PPC_REL16_HA:
8340 if (h == NULL || h == htab->elf.hgot)
8346 case R_PPC_ADDR16_LO:
8347 case R_PPC_ADDR16_HI:
8348 case R_PPC_ADDR16_HA:
8353 case R_PPC_VLE_REL8:
8354 case R_PPC_VLE_REL15:
8355 case R_PPC_VLE_REL24:
8358 case R_PPC_REL14_BRTAKEN:
8359 case R_PPC_REL14_BRNTAKEN:
8360 /* If these relocations are not to a named symbol, they can be
8361 handled right here, no need to bother the dynamic linker. */
8362 if (SYMBOL_CALLS_LOCAL (info, h)
8363 || h == htab->elf.hgot)
8369 case R_PPC_ADDR14_BRTAKEN:
8370 case R_PPC_ADDR14_BRNTAKEN:
8371 if (h != NULL && !info->shared)
8376 if ((input_section->flags & SEC_ALLOC) == 0
8382 && ((h->root.type == bfd_link_hash_undefined
8383 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8384 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8385 || (h->root.type == bfd_link_hash_undefweak
8386 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8387 && (must_be_dyn_reloc (info, r_type)
8388 || !SYMBOL_CALLS_LOCAL (info, h)))
8389 || (ELIMINATE_COPY_RELOCS
8394 && !h->def_regular))
8400 fprintf (stderr, "ppc_elf_relocate_section needs to "
8401 "create relocation for %s\n",
8402 (h && h->root.root.string
8403 ? h->root.root.string : "<unknown>"));
8406 /* When generating a shared object, these relocations
8407 are copied into the output file to be resolved at run
8409 sreloc = elf_section_data (input_section)->sreloc;
8411 sreloc = htab->reliplt;
8416 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8419 if (outrel.r_offset == (bfd_vma) -1
8420 || outrel.r_offset == (bfd_vma) -2)
8421 skip = (int) outrel.r_offset;
8422 outrel.r_offset += (input_section->output_section->vma
8423 + input_section->output_offset);
8426 memset (&outrel, 0, sizeof outrel);
8428 && (h->root.type == bfd_link_hash_undefined
8429 || h->root.type == bfd_link_hash_undefweak))
8430 || !SYMBOL_REFERENCES_LOCAL (info, h))
8432 BFD_ASSERT (h->dynindx != -1);
8433 unresolved_reloc = FALSE;
8434 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8435 outrel.r_addend = rel->r_addend;
8439 outrel.r_addend = relocation + rel->r_addend;
8441 if (r_type != R_PPC_ADDR32)
8447 /* If we get here when building a static
8448 executable, then the libc startup function
8449 responsible for applying indirect function
8450 relocations is going to complain about
8452 If we get here when building a dynamic
8453 executable, it will be because we have
8454 a text relocation. The dynamic loader
8455 will set the text segment writable and
8456 non-executable to apply text relocations.
8457 So we'll segfault when trying to run the
8458 indirection function to resolve the reloc. */
8459 info->callbacks->einfo
8460 (_("%P: %H: relocation %s for indirect "
8461 "function %s unsupported\n"),
8462 input_bfd, input_section, rel->r_offset,
8467 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8469 else if (sec == NULL || sec->owner == NULL)
8471 bfd_set_error (bfd_error_bad_value);
8478 /* We are turning this relocation into one
8479 against a section symbol. It would be
8480 proper to subtract the symbol's value,
8481 osec->vma, from the emitted reloc addend,
8482 but ld.so expects buggy relocs.
8483 FIXME: Why not always use a zero index? */
8484 osec = sec->output_section;
8485 indx = elf_section_data (osec)->dynindx;
8488 osec = htab->elf.text_index_section;
8489 indx = elf_section_data (osec)->dynindx;
8491 BFD_ASSERT (indx != 0);
8494 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8495 indx, osec->name, osec->flags,
8496 h->root.root.string);
8500 outrel.r_info = ELF32_R_INFO (indx, r_type);
8502 else if (ifunc != NULL)
8503 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8505 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8508 loc = sreloc->contents;
8509 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8510 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8515 /* This reloc will be computed at runtime. We clear the memory
8516 so that it contains predictable value. */
8518 && ((input_section->flags & SEC_ALLOC) != 0
8519 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8521 relocation = howto->pc_relative ? outrel.r_offset : 0;
8528 case R_PPC_RELAX_PLT:
8529 case R_PPC_RELAX_PLTREL24:
8532 struct plt_entry *ent;
8533 bfd_vma got2_addend = 0;
8535 if (r_type == R_PPC_RELAX_PLTREL24)
8538 got2_addend = addend;
8541 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8542 if (htab->plt_type == PLT_NEW)
8543 relocation = (htab->glink->output_section->vma
8544 + htab->glink->output_offset
8545 + ent->glink_offset);
8547 relocation = (htab->plt->output_section->vma
8548 + htab->plt->output_offset
8557 size_t insn_offset = rel->r_offset;
8562 relocation -= (input_section->output_section->vma
8563 + input_section->output_offset
8564 + rel->r_offset - 4);
8565 stub = shared_stub_entry;
8566 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8567 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8568 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8570 size = ARRAY_SIZE (shared_stub_entry) - 3;
8575 size = ARRAY_SIZE (stub_entry);
8578 relocation += addend;
8579 if (info->relocatable)
8582 /* First insn is HA, second is LO. */
8584 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8585 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8589 insn |= relocation & 0xffff;
8590 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8598 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8602 /* Rewrite the reloc and convert one of the trailing nop
8603 relocs to describe this relocation. */
8604 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8605 /* The relocs are at the bottom 2 bytes */
8606 rel[0].r_offset += d_offset;
8607 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8608 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8609 rel[1].r_offset += 4;
8610 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8615 /* Indirect .sdata relocation. */
8616 case R_PPC_EMB_SDAI16:
8617 BFD_ASSERT (htab->sdata[0].section != NULL);
8618 if (!is_static_defined (htab->sdata[0].sym))
8620 unresolved_reloc = TRUE;
8624 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8625 h, relocation, rel);
8629 /* Indirect .sdata2 relocation. */
8630 case R_PPC_EMB_SDA2I16:
8631 BFD_ASSERT (htab->sdata[1].section != NULL);
8632 if (!is_static_defined (htab->sdata[1].sym))
8634 unresolved_reloc = TRUE;
8638 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8639 h, relocation, rel);
8643 /* Handle the TOC16 reloc. We want to use the offset within the .got
8644 section, not the actual VMA. This is appropriate when generating
8645 an embedded ELF object, for which the .got section acts like the
8646 AIX .toc section. */
8647 case R_PPC_TOC16: /* phony GOT16 relocations */
8648 if (sec == NULL || sec->output_section == NULL)
8650 unresolved_reloc = TRUE;
8653 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8655 || strcmp (bfd_get_section_name (sec->owner, sec),
8658 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8661 case R_PPC_PLTREL24:
8662 if (h != NULL && ifunc == NULL)
8664 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8665 info->shared ? addend : 0);
8667 || htab->plt == NULL)
8669 /* We didn't make a PLT entry for this symbol. This
8670 happens when statically linking PIC code, or when
8671 using -Bsymbolic. */
8675 /* Relocation is to the entry for this symbol in the
8676 procedure linkage table. */
8677 unresolved_reloc = FALSE;
8678 if (htab->plt_type == PLT_NEW)
8679 relocation = (htab->glink->output_section->vma
8680 + htab->glink->output_offset
8681 + ent->glink_offset);
8683 relocation = (htab->plt->output_section->vma
8684 + htab->plt->output_offset
8689 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8690 addend specifies the GOT pointer offset within .got2.
8691 Don't apply it to the relocation field. */
8695 /* Relocate against _SDA_BASE_. */
8696 case R_PPC_SDAREL16:
8699 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8702 || sec->output_section == NULL
8703 || !is_static_defined (sda))
8705 unresolved_reloc = TRUE;
8708 addend -= SYM_VAL (sda);
8710 name = bfd_get_section_name (output_bfd, sec->output_section);
8711 if (!(strcmp (name, ".sdata") == 0
8712 || strcmp (name, ".sbss") == 0))
8714 info->callbacks->einfo
8715 (_("%P: %B: the target (%s) of a %s relocation is "
8716 "in the wrong output section (%s)\n"),
8725 /* Relocate against _SDA2_BASE_. */
8726 case R_PPC_EMB_SDA2REL:
8729 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8732 || sec->output_section == NULL
8733 || !is_static_defined (sda))
8735 unresolved_reloc = TRUE;
8738 addend -= SYM_VAL (sda);
8740 name = bfd_get_section_name (output_bfd, sec->output_section);
8741 if (!(strcmp (name, ".sdata2") == 0
8742 || strcmp (name, ".sbss2") == 0))
8744 info->callbacks->einfo
8745 (_("%P: %B: the target (%s) of a %s relocation is "
8746 "in the wrong output section (%s)\n"),
8755 case R_PPC_VLE_LO16A:
8756 relocation = relocation + addend;
8757 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8758 relocation, split16a_type);
8761 case R_PPC_VLE_LO16D:
8762 relocation = relocation + addend;
8763 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8764 relocation, split16d_type);
8767 case R_PPC_VLE_HI16A:
8768 relocation = (relocation + addend) >> 16;
8769 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8770 relocation, split16a_type);
8773 case R_PPC_VLE_HI16D:
8774 relocation = (relocation + addend) >> 16;
8775 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8776 relocation, split16d_type);
8779 case R_PPC_VLE_HA16A:
8780 relocation = (relocation + addend + 0x8000) >> 16;
8781 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8782 relocation, split16a_type);
8785 case R_PPC_VLE_HA16D:
8786 relocation = (relocation + addend + 0x8000) >> 16;
8787 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8788 relocation, split16d_type);
8791 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8792 case R_PPC_EMB_SDA21:
8793 case R_PPC_VLE_SDA21:
8794 case R_PPC_EMB_RELSDA:
8795 case R_PPC_VLE_SDA21_LO:
8800 struct elf_link_hash_entry *sda = NULL;
8802 if (sec == NULL || sec->output_section == NULL)
8804 unresolved_reloc = TRUE;
8808 name = bfd_get_section_name (output_bfd, sec->output_section);
8809 if (strcmp (name, ".sdata") == 0
8810 || strcmp (name, ".sbss") == 0)
8813 sda = htab->sdata[0].sym;
8815 else if (strcmp (name, ".sdata2") == 0
8816 || strcmp (name, ".sbss2") == 0)
8819 sda = htab->sdata[1].sym;
8821 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8822 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8828 info->callbacks->einfo
8829 (_("%P: %B: the target (%s) of a %s relocation is "
8830 "in the wrong output section (%s)\n"),
8836 bfd_set_error (bfd_error_bad_value);
8843 if (!is_static_defined (sda))
8845 unresolved_reloc = TRUE;
8848 addend -= SYM_VAL (sda);
8851 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8853 && (r_type == R_PPC_VLE_SDA21
8854 || r_type == R_PPC_VLE_SDA21_LO))
8856 relocation = relocation + addend;
8859 /* Force e_li insn, keeping RT from original insn. */
8863 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8864 /* Top 4 bits of value to 17..20. */
8865 insn |= (relocation & 0xf0000) >> 5;
8866 /* Next 5 bits of the value to 11..15. */
8867 insn |= (relocation & 0xf800) << 5;
8868 /* And the final 11 bits of the value to bits 21 to 31. */
8869 insn |= relocation & 0x7ff;
8871 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8873 if (r_type == R_PPC_VLE_SDA21
8874 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
8878 else if (r_type == R_PPC_EMB_SDA21
8879 || r_type == R_PPC_VLE_SDA21
8880 || r_type == R_PPC_VLE_SDA21_LO)
8882 /* Fill in register field. */
8883 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8885 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8889 case R_PPC_VLE_SDAREL_LO16A:
8890 case R_PPC_VLE_SDAREL_LO16D:
8891 case R_PPC_VLE_SDAREL_HI16A:
8892 case R_PPC_VLE_SDAREL_HI16D:
8893 case R_PPC_VLE_SDAREL_HA16A:
8894 case R_PPC_VLE_SDAREL_HA16D:
8899 struct elf_link_hash_entry *sda = NULL;
8901 if (sec == NULL || sec->output_section == NULL)
8903 unresolved_reloc = TRUE;
8907 name = bfd_get_section_name (output_bfd, sec->output_section);
8908 if (strcmp (name, ".sdata") == 0
8909 || strcmp (name, ".sbss") == 0)
8912 sda = htab->sdata[0].sym;
8914 else if (strcmp (name, ".sdata2") == 0
8915 || strcmp (name, ".sbss2") == 0)
8918 sda = htab->sdata[1].sym;
8922 (*_bfd_error_handler)
8923 (_("%B: the target (%s) of a %s relocation is "
8924 "in the wrong output section (%s)"),
8930 bfd_set_error (bfd_error_bad_value);
8937 if (!is_static_defined (sda))
8939 unresolved_reloc = TRUE;
8944 value = (sda->root.u.def.section->output_section->vma
8945 + sda->root.u.def.section->output_offset
8948 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8949 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8950 value, split16a_type);
8951 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8952 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8953 value, split16d_type);
8954 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8956 value = value >> 16;
8957 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8958 value, split16a_type);
8960 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8962 value = value >> 16;
8963 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8964 value, split16d_type);
8966 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
8968 value = (value + 0x8000) >> 16;
8969 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8970 value, split16a_type);
8972 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
8974 value = (value + 0x8000) >> 16;
8975 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8976 value, split16d_type);
8981 /* Relocate against the beginning of the section. */
8983 case R_PPC_SECTOFF_LO:
8984 case R_PPC_SECTOFF_HI:
8985 case R_PPC_SECTOFF_HA:
8986 if (sec == NULL || sec->output_section == NULL)
8988 unresolved_reloc = TRUE;
8991 addend -= sec->output_section->vma;
8994 /* Negative relocations. */
8995 case R_PPC_EMB_NADDR32:
8996 case R_PPC_EMB_NADDR16:
8997 case R_PPC_EMB_NADDR16_LO:
8998 case R_PPC_EMB_NADDR16_HI:
8999 case R_PPC_EMB_NADDR16_HA:
9000 addend -= 2 * relocation;
9004 case R_PPC_GLOB_DAT:
9005 case R_PPC_JMP_SLOT:
9006 case R_PPC_RELATIVE:
9007 case R_PPC_IRELATIVE:
9009 case R_PPC_PLTREL32:
9010 case R_PPC_PLT16_LO:
9011 case R_PPC_PLT16_HI:
9012 case R_PPC_PLT16_HA:
9014 case R_PPC_EMB_RELSEC16:
9015 case R_PPC_EMB_RELST_LO:
9016 case R_PPC_EMB_RELST_HI:
9017 case R_PPC_EMB_RELST_HA:
9018 case R_PPC_EMB_BIT_FLD:
9019 info->callbacks->einfo
9020 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9025 bfd_set_error (bfd_error_invalid_operation);
9030 /* Do any further special processing. */
9036 case R_PPC_ADDR16_HA:
9037 case R_PPC_REL16_HA:
9038 case R_PPC_SECTOFF_HA:
9039 case R_PPC_TPREL16_HA:
9040 case R_PPC_DTPREL16_HA:
9041 case R_PPC_EMB_NADDR16_HA:
9042 case R_PPC_EMB_RELST_HA:
9043 /* It's just possible that this symbol is a weak symbol
9044 that's not actually defined anywhere. In that case,
9045 'sec' would be NULL, and we should leave the symbol
9046 alone (it will be set to zero elsewhere in the link). */
9051 case R_PPC_PLT16_HA:
9052 case R_PPC_GOT16_HA:
9053 case R_PPC_GOT_TLSGD16_HA:
9054 case R_PPC_GOT_TLSLD16_HA:
9055 case R_PPC_GOT_TPREL16_HA:
9056 case R_PPC_GOT_DTPREL16_HA:
9057 /* Add 0x10000 if sign bit in 0:15 is set.
9058 Bits 0:15 are not used. */
9063 case R_PPC_ADDR16_LO:
9065 case R_PPC_GOT16_LO:
9066 case R_PPC_SDAREL16:
9068 case R_PPC_SECTOFF_LO:
9069 case R_PPC_DTPREL16:
9070 case R_PPC_DTPREL16_LO:
9072 case R_PPC_TPREL16_LO:
9073 case R_PPC_GOT_TLSGD16:
9074 case R_PPC_GOT_TLSGD16_LO:
9075 case R_PPC_GOT_TLSLD16:
9076 case R_PPC_GOT_TLSLD16_LO:
9077 case R_PPC_GOT_DTPREL16:
9078 case R_PPC_GOT_DTPREL16_LO:
9079 case R_PPC_GOT_TPREL16:
9080 case R_PPC_GOT_TPREL16_LO:
9082 /* The 32-bit ABI lacks proper relocations to deal with
9083 certain 64-bit instructions. Prevent damage to bits
9084 that make up part of the insn opcode. */
9085 unsigned int insn, mask, lobit;
9087 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
9089 if (is_insn_ds_form (insn))
9091 else if (is_insn_dq_form (insn))
9095 lobit = mask & (relocation + addend);
9099 info->callbacks->einfo
9100 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9101 input_bfd, input_section, rel->r_offset,
9102 howto->name, sym_name, mask + 1);
9103 bfd_set_error (bfd_error_bad_value);
9106 addend += insn & mask;
9112 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9113 "offset = %ld, addend = %ld\n",
9118 (long) rel->r_offset,
9122 if (unresolved_reloc
9123 && !((input_section->flags & SEC_DEBUGGING) != 0
9125 && _bfd_elf_section_offset (output_bfd, info, input_section,
9126 rel->r_offset) != (bfd_vma) -1)
9128 info->callbacks->einfo
9129 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9130 input_bfd, input_section, rel->r_offset,
9136 /* 16-bit fields in insns mostly have signed values, but a
9137 few insns have 16-bit unsigned values. Really, we should
9138 have different reloc types. */
9139 if (howto->complain_on_overflow != complain_overflow_dont
9140 && howto->dst_mask == 0xffff
9141 && (input_section->flags & SEC_CODE) != 0)
9143 enum complain_overflow complain = complain_overflow_signed;
9145 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9149 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9150 if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9151 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9152 || (insn & (0x3f << 26)) == 26u << 26 /* xori */
9153 || (insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9154 complain = complain_overflow_unsigned;
9156 if (howto->complain_on_overflow != complain)
9159 alt_howto.complain_on_overflow = complain;
9164 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9165 rel->r_offset, relocation, addend);
9167 if (r != bfd_reloc_ok)
9169 if (r == bfd_reloc_overflow)
9175 && h->root.type == bfd_link_hash_undefweak
9176 && howto->pc_relative)
9178 /* Assume this is a call protected by other code that
9179 detect the symbol is undefined. If this is the case,
9180 we can safely ignore the overflow. If not, the
9181 program is hosed anyway, and a little warning isn't
9187 if (! (*info->callbacks->reloc_overflow) (info,
9188 (h ? &h->root : NULL),
9199 info->callbacks->einfo
9200 (_("%P: %H: %s reloc against `%s': error %d\n"),
9201 input_bfd, input_section, rel->r_offset,
9202 howto->name, sym_name, (int) r);
9209 fprintf (stderr, "\n");
9212 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9213 && input_section->size != input_section->rawsize
9214 && (strcmp (input_section->output_section->name, ".init") == 0
9215 || strcmp (input_section->output_section->name, ".fini") == 0))
9217 /* Branch around the trampolines. */
9218 unsigned int insn = B + input_section->size - input_section->rawsize;
9219 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9222 if (htab->params->ppc476_workaround
9223 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9224 && (!info->relocatable
9225 || (input_section->output_section->alignment_power
9226 >= htab->params->pagesize_p2)))
9228 struct ppc_elf_relax_info *relax_info;
9229 bfd_vma start_addr, end_addr, addr;
9230 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9232 relax_info = elf_section_data (input_section)->sec_info;
9233 if (relax_info->workaround_size != 0)
9239 bfd_put_32 (input_bfd, BA, fill);
9240 p = contents + input_section->size - relax_info->workaround_size;
9241 n = relax_info->workaround_size >> 2;
9244 memcpy (p, fill, 4);
9249 /* The idea is: Replace the last instruction on a page with a
9250 branch to a patch area. Put the insn there followed by a
9251 branch back to the next page. Complicated a little by
9252 needing to handle moved conditional branches, and by not
9253 wanting to touch data-in-text. */
9255 start_addr = (input_section->output_section->vma
9256 + input_section->output_offset);
9257 end_addr = (start_addr + input_section->size
9258 - relax_info->workaround_size);
9259 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9263 bfd_vma offset = addr - start_addr;
9264 Elf_Internal_Rela *lo, *hi;
9265 bfd_boolean is_data;
9266 bfd_vma patch_off, patch_addr;
9269 /* Do we have a data reloc at this offset? If so, leave
9277 rel = lo + (hi - lo) / 2;
9278 if (rel->r_offset < offset)
9280 else if (rel->r_offset > offset + 3)
9284 switch (ELF32_R_TYPE (rel->r_info))
9301 /* Some instructions can be left alone too. Unconditional
9302 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9303 avoid the icache failure.
9305 The problem occurs due to prefetch across a page boundary
9306 where stale instructions can be fetched from the next
9307 page, and the mechanism for flushing these bad
9308 instructions fails under certain circumstances. The
9309 unconditional branches:
9310 1) Branch: b, bl, ba, bla,
9311 2) Branch Conditional: bc, bca, bcl, bcla,
9312 3) Branch Conditional to Link Register: bclr, bclrl,
9313 where (2) and (3) have BO=0x14 making them unconditional,
9314 prevent the bad prefetch because the prefetch itself is
9315 affected by these instructions. This happens even if the
9316 instruction is not executed.
9321 . addi 9,9,new_page@l
9328 The bctr is not predicted taken due to ctr not being
9329 ready, so prefetch continues on past the bctr into the
9330 new page which might have stale instructions. If they
9331 fail to be flushed, then they will be executed after the
9332 bctr executes. Either of the following modifications
9333 prevent the bad prefetch from happening in the first
9336 . lis 9,new_page@ha lis 9,new_page@ha
9337 . addi 9,9,new_page@l addi 9,9,new_page@l
9340 . nop b somewhere_else
9341 . b somewhere_else nop
9342 . new_page: new_page:
9344 insn = bfd_get_32 (input_bfd, contents + offset);
9345 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9346 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9347 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9348 || ((insn & (0x3f << 26)) == (19u << 26)
9349 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9350 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9353 patch_addr = (start_addr + input_section->size
9354 - relax_info->workaround_size);
9355 patch_addr = (patch_addr + 15) & -16;
9356 patch_off = patch_addr - start_addr;
9357 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9360 && rel->r_offset >= offset
9361 && rel->r_offset < offset + 4)
9363 /* If the insn we are patching had a reloc, adjust the
9364 reloc r_offset so that the reloc applies to the moved
9365 location. This matters for -r and --emit-relocs. */
9366 if (rel + 1 != relend)
9368 Elf_Internal_Rela tmp = *rel;
9370 /* Keep the relocs sorted by r_offset. */
9371 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9374 relend[-1].r_offset += patch_off - offset;
9379 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9380 && (insn & 2) == 0 /* relative */)
9382 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9384 delta += offset - patch_off;
9385 if (info->relocatable && rel != NULL)
9387 if (!info->relocatable && rel != NULL)
9389 enum elf_ppc_reloc_type r_type;
9391 r_type = ELF32_R_TYPE (relend[-1].r_info);
9392 if (r_type == R_PPC_REL14_BRTAKEN)
9393 insn |= BRANCH_PREDICT_BIT;
9394 else if (r_type == R_PPC_REL14_BRNTAKEN)
9395 insn &= ~BRANCH_PREDICT_BIT;
9397 BFD_ASSERT (r_type == R_PPC_REL14);
9399 if ((r_type == R_PPC_REL14_BRTAKEN
9400 || r_type == R_PPC_REL14_BRNTAKEN)
9401 && delta + 0x8000 < 0x10000
9402 && (bfd_signed_vma) delta < 0)
9403 insn ^= BRANCH_PREDICT_BIT;
9405 if (delta + 0x8000 < 0x10000)
9407 bfd_put_32 (input_bfd,
9408 (insn & ~0xfffc) | (delta & 0xfffc),
9409 contents + patch_off);
9411 bfd_put_32 (input_bfd,
9412 B | ((offset + 4 - patch_off) & 0x3fffffc),
9413 contents + patch_off);
9420 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9422 relend[-1].r_offset += 8;
9423 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9425 bfd_put_32 (input_bfd,
9426 (insn & ~0xfffc) | 8,
9427 contents + patch_off);
9429 bfd_put_32 (input_bfd,
9430 B | ((offset + 4 - patch_off) & 0x3fffffc),
9431 contents + patch_off);
9433 bfd_put_32 (input_bfd,
9434 B | ((delta - 8) & 0x3fffffc),
9435 contents + patch_off);
9441 bfd_put_32 (input_bfd, insn, contents + patch_off);
9443 bfd_put_32 (input_bfd,
9444 B | ((offset + 4 - patch_off) & 0x3fffffc),
9445 contents + patch_off);
9448 BFD_ASSERT (patch_off <= input_section->size);
9449 relax_info->workaround_size = input_section->size - patch_off;
9456 /* Finish up dynamic symbol handling. We set the contents of various
9457 dynamic sections here. */
9460 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9461 struct bfd_link_info *info,
9462 struct elf_link_hash_entry *h,
9463 Elf_Internal_Sym *sym)
9465 struct ppc_elf_link_hash_table *htab;
9466 struct plt_entry *ent;
9467 bfd_boolean doneone;
9470 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9471 h->root.root.string);
9474 htab = ppc_elf_hash_table (info);
9475 BFD_ASSERT (htab->elf.dynobj != NULL);
9478 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9479 if (ent->plt.offset != (bfd_vma) -1)
9483 Elf_Internal_Rela rela;
9485 bfd_vma reloc_index;
9487 if (htab->plt_type == PLT_NEW
9488 || !htab->elf.dynamic_sections_created
9489 || h->dynindx == -1)
9490 reloc_index = ent->plt.offset / 4;
9493 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9494 / htab->plt_slot_size);
9495 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9496 && htab->plt_type == PLT_OLD)
9497 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9500 /* This symbol has an entry in the procedure linkage table.
9502 if (htab->plt_type == PLT_VXWORKS
9503 && htab->elf.dynamic_sections_created
9504 && h->dynindx != -1)
9507 const bfd_vma *plt_entry;
9509 /* The first three entries in .got.plt are reserved. */
9510 got_offset = (reloc_index + 3) * 4;
9512 /* Use the right PLT. */
9513 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9514 : ppc_elf_vxworks_plt_entry;
9516 /* Fill in the .plt on VxWorks. */
9519 bfd_put_32 (output_bfd,
9520 plt_entry[0] | PPC_HA (got_offset),
9521 htab->plt->contents + ent->plt.offset + 0);
9522 bfd_put_32 (output_bfd,
9523 plt_entry[1] | PPC_LO (got_offset),
9524 htab->plt->contents + ent->plt.offset + 4);
9528 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9530 bfd_put_32 (output_bfd,
9531 plt_entry[0] | PPC_HA (got_loc),
9532 htab->plt->contents + ent->plt.offset + 0);
9533 bfd_put_32 (output_bfd,
9534 plt_entry[1] | PPC_LO (got_loc),
9535 htab->plt->contents + ent->plt.offset + 4);
9538 bfd_put_32 (output_bfd, plt_entry[2],
9539 htab->plt->contents + ent->plt.offset + 8);
9540 bfd_put_32 (output_bfd, plt_entry[3],
9541 htab->plt->contents + ent->plt.offset + 12);
9543 /* This instruction is an immediate load. The value loaded is
9544 the byte offset of the R_PPC_JMP_SLOT relocation from the
9545 start of the .rela.plt section. The value is stored in the
9546 low-order 16 bits of the load instruction. */
9547 /* NOTE: It appears that this is now an index rather than a
9548 prescaled offset. */
9549 bfd_put_32 (output_bfd,
9550 plt_entry[4] | reloc_index,
9551 htab->plt->contents + ent->plt.offset + 16);
9552 /* This instruction is a PC-relative branch whose target is
9553 the start of the PLT section. The address of this branch
9554 instruction is 20 bytes beyond the start of this PLT entry.
9555 The address is encoded in bits 6-29, inclusive. The value
9556 stored is right-shifted by two bits, permitting a 26-bit
9558 bfd_put_32 (output_bfd,
9560 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9561 htab->plt->contents + ent->plt.offset + 20);
9562 bfd_put_32 (output_bfd, plt_entry[6],
9563 htab->plt->contents + ent->plt.offset + 24);
9564 bfd_put_32 (output_bfd, plt_entry[7],
9565 htab->plt->contents + ent->plt.offset + 28);
9567 /* Fill in the GOT entry corresponding to this PLT slot with
9568 the address immediately after the "bctr" instruction
9569 in this PLT entry. */
9570 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9571 + htab->plt->output_offset
9572 + ent->plt.offset + 16),
9573 htab->sgotplt->contents + got_offset);
9577 /* Fill in a couple of entries in .rela.plt.unloaded. */
9578 loc = htab->srelplt2->contents
9579 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9580 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9581 * sizeof (Elf32_External_Rela));
9583 /* Provide the @ha relocation for the first instruction. */
9584 rela.r_offset = (htab->plt->output_section->vma
9585 + htab->plt->output_offset
9586 + ent->plt.offset + 2);
9587 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9589 rela.r_addend = got_offset;
9590 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9591 loc += sizeof (Elf32_External_Rela);
9593 /* Provide the @l relocation for the second instruction. */
9594 rela.r_offset = (htab->plt->output_section->vma
9595 + htab->plt->output_offset
9596 + ent->plt.offset + 6);
9597 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9599 rela.r_addend = got_offset;
9600 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9601 loc += sizeof (Elf32_External_Rela);
9603 /* Provide a relocation for the GOT entry corresponding to this
9604 PLT slot. Point it at the middle of the .plt entry. */
9605 rela.r_offset = (htab->sgotplt->output_section->vma
9606 + htab->sgotplt->output_offset
9608 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9610 rela.r_addend = ent->plt.offset + 16;
9611 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9614 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9615 In particular, the offset for the relocation is not the
9616 address of the PLT entry for this function, as specified
9617 by the ABI. Instead, the offset is set to the address of
9618 the GOT slot for this function. See EABI 4.4.4.1. */
9619 rela.r_offset = (htab->sgotplt->output_section->vma
9620 + htab->sgotplt->output_offset
9626 asection *splt = htab->plt;
9627 if (!htab->elf.dynamic_sections_created
9628 || h->dynindx == -1)
9631 rela.r_offset = (splt->output_section->vma
9632 + splt->output_offset
9634 if (htab->plt_type == PLT_OLD
9635 || !htab->elf.dynamic_sections_created
9636 || h->dynindx == -1)
9638 /* We don't need to fill in the .plt. The ppc dynamic
9639 linker will fill it in. */
9643 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9644 + htab->glink->output_section->vma
9645 + htab->glink->output_offset);
9646 bfd_put_32 (output_bfd, val,
9647 splt->contents + ent->plt.offset);
9651 /* Fill in the entry in the .rela.plt section. */
9653 if (!htab->elf.dynamic_sections_created
9654 || h->dynindx == -1)
9656 BFD_ASSERT (h->type == STT_GNU_IFUNC
9658 && (h->root.type == bfd_link_hash_defined
9659 || h->root.type == bfd_link_hash_defweak));
9660 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9661 rela.r_addend = SYM_VAL (h);
9664 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9666 if (!htab->elf.dynamic_sections_created
9667 || h->dynindx == -1)
9668 loc = (htab->reliplt->contents
9669 + (htab->reliplt->reloc_count++
9670 * sizeof (Elf32_External_Rela)));
9672 loc = (htab->relplt->contents
9673 + reloc_index * sizeof (Elf32_External_Rela));
9674 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9676 if (!h->def_regular)
9678 /* Mark the symbol as undefined, rather than as
9679 defined in the .plt section. Leave the value if
9680 there were any relocations where pointer equality
9681 matters (this is a clue for the dynamic linker, to
9682 make function pointer comparisons work between an
9683 application and shared library), otherwise set it
9685 sym->st_shndx = SHN_UNDEF;
9686 if (!h->pointer_equality_needed)
9688 else if (!h->ref_regular_nonweak)
9690 /* This breaks function pointer comparisons, but
9691 that is better than breaking tests for a NULL
9692 function pointer. */
9696 else if (h->type == STT_GNU_IFUNC
9699 /* Set the value of ifunc symbols in a non-pie
9700 executable to the glink entry. This is to avoid
9701 text relocations. We can't do this for ifunc in
9702 allocate_dynrelocs, as we do for normal dynamic
9703 function symbols with plt entries, because we need
9704 to keep the original value around for the ifunc
9706 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9707 (output_bfd, htab->glink->output_section));
9708 sym->st_value = (ent->glink_offset
9709 + htab->glink->output_offset
9710 + htab->glink->output_section->vma);
9715 if (htab->plt_type == PLT_NEW
9716 || !htab->elf.dynamic_sections_created
9717 || h->dynindx == -1)
9720 asection *splt = htab->plt;
9721 if (!htab->elf.dynamic_sections_created
9722 || h->dynindx == -1)
9725 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9727 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
9729 bfd_put_32 (output_bfd, LWZ_11_3, p);
9731 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9733 bfd_put_32 (output_bfd, MR_0_3, p);
9735 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9737 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9739 bfd_put_32 (output_bfd, BEQLR, p);
9741 bfd_put_32 (output_bfd, MR_3_0, p);
9743 bfd_put_32 (output_bfd, NOP, p);
9747 write_glink_stub (ent, splt, p, info);
9750 /* We only need one non-PIC glink stub. */
9760 Elf_Internal_Rela rela;
9763 /* This symbols needs a copy reloc. Set it up. */
9766 fprintf (stderr, ", copy");
9769 BFD_ASSERT (h->dynindx != -1);
9771 if (ppc_elf_hash_entry (h)->has_sda_refs)
9775 BFD_ASSERT (s != NULL);
9777 rela.r_offset = SYM_VAL (h);
9778 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9780 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9781 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9785 fprintf (stderr, "\n");
9791 static enum elf_reloc_type_class
9792 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9793 const asection *rel_sec,
9794 const Elf_Internal_Rela *rela)
9796 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9798 if (rel_sec == htab->reliplt)
9799 return reloc_class_ifunc;
9801 switch (ELF32_R_TYPE (rela->r_info))
9803 case R_PPC_RELATIVE:
9804 return reloc_class_relative;
9805 case R_PPC_JMP_SLOT:
9806 return reloc_class_plt;
9808 return reloc_class_copy;
9810 return reloc_class_normal;
9814 /* Finish up the dynamic sections. */
9817 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9818 struct bfd_link_info *info)
9822 struct ppc_elf_link_hash_table *htab;
9825 bfd_boolean ret = TRUE;
9828 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9831 htab = ppc_elf_hash_table (info);
9832 dynobj = elf_hash_table (info)->dynobj;
9833 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9834 if (htab->is_vxworks)
9835 splt = bfd_get_linker_section (dynobj, ".plt");
9840 if (htab->elf.hgot != NULL)
9841 got = SYM_VAL (htab->elf.hgot);
9843 if (htab->elf.dynamic_sections_created)
9845 Elf32_External_Dyn *dyncon, *dynconend;
9847 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9849 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9850 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9851 for (; dyncon < dynconend; dyncon++)
9853 Elf_Internal_Dyn dyn;
9856 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9861 if (htab->is_vxworks)
9865 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9869 dyn.d_un.d_val = htab->relplt->size;
9874 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9878 dyn.d_un.d_ptr = got;
9882 if (htab->is_vxworks)
9885 dyn.d_un.d_ptr -= htab->relplt->size;
9891 if (htab->is_vxworks
9892 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9897 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9901 if (htab->got != NULL)
9903 if (htab->elf.hgot->root.u.def.section == htab->got
9904 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9906 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9908 p += htab->elf.hgot->root.u.def.value;
9909 if (htab->plt_type == PLT_OLD)
9911 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9912 so that a function can easily find the address of
9913 _GLOBAL_OFFSET_TABLE_. */
9914 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9915 < htab->elf.hgot->root.u.def.section->size);
9916 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9921 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9922 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9923 < htab->elf.hgot->root.u.def.section->size);
9924 bfd_put_32 (output_bfd, val, p);
9929 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
9930 htab->elf.hgot->root.root.string,
9931 (htab->sgotplt != NULL
9932 ? htab->sgotplt->name : htab->got->name));
9933 bfd_set_error (bfd_error_bad_value);
9937 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9940 /* Fill in the first entry in the VxWorks procedure linkage table. */
9941 if (splt && splt->size > 0)
9943 /* Use the right PLT. */
9944 const bfd_vma *plt_entry = (info->shared
9945 ? ppc_elf_vxworks_pic_plt0_entry
9946 : ppc_elf_vxworks_plt0_entry);
9950 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9952 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9953 splt->contents + 0);
9954 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9955 splt->contents + 4);
9959 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9960 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9962 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9963 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
9964 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
9965 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
9966 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
9967 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
9971 Elf_Internal_Rela rela;
9974 loc = htab->srelplt2->contents;
9976 /* Output the @ha relocation for the first instruction. */
9977 rela.r_offset = (htab->plt->output_section->vma
9978 + htab->plt->output_offset
9980 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
9982 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9983 loc += sizeof (Elf32_External_Rela);
9985 /* Output the @l relocation for the second instruction. */
9986 rela.r_offset = (htab->plt->output_section->vma
9987 + htab->plt->output_offset
9989 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
9991 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9992 loc += sizeof (Elf32_External_Rela);
9994 /* Fix up the remaining relocations. They may have the wrong
9995 symbol index for _G_O_T_ or _P_L_T_ depending on the order
9996 in which symbols were output. */
9997 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
9999 Elf_Internal_Rela rel;
10001 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10002 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10003 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10004 loc += sizeof (Elf32_External_Rela);
10006 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10007 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10008 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10009 loc += sizeof (Elf32_External_Rela);
10011 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10012 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10013 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10014 loc += sizeof (Elf32_External_Rela);
10019 if (htab->glink != NULL
10020 && htab->glink->contents != NULL
10021 && htab->elf.dynamic_sections_created)
10024 unsigned char *endp;
10029 * PIC glink code is the following:
10031 * # ith PLT code stub.
10032 * addis 11,30,(plt+(i-1)*4-got)@ha
10033 * lwz 11,(plt+(i-1)*4-got)@l(11)
10037 * # A table of branches, one for each plt entry.
10038 * # The idea is that the plt call stub loads ctr and r11 with these
10039 * # addresses, so (r11 - res_0) gives the plt index * 4.
10040 * res_0: b PLTresolve
10041 * res_1: b PLTresolve
10043 * # Some number of entries towards the end can be nops
10049 * addis 11,11,(1f-res_0)@ha
10052 * 1: addi 11,11,(1b-res_0)@l
10055 * sub 11,11,12 # r11 = index * 4
10056 * addis 12,12,(got+4-1b)@ha
10057 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10058 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10061 * add 11,0,11 # r11 = index * 12 = reloc offset.
10064 static const unsigned int pic_plt_resolve[] =
10085 * Non-PIC glink code is a little simpler.
10087 * # ith PLT code stub.
10088 * lis 11,(plt+(i-1)*4)@ha
10089 * lwz 11,(plt+(i-1)*4)@l(11)
10093 * The branch table is the same, then comes
10096 * lis 12,(got+4)@ha
10097 * addis 11,11,(-res_0)@ha
10098 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10099 * addi 11,11,(-res_0)@l # r11 = index * 4
10102 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10103 * add 11,0,11 # r11 = index * 12 = reloc offset.
10106 static const unsigned int plt_resolve[] =
10126 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10128 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10131 /* Build the branch table, one for each plt entry (less one),
10132 and perhaps some padding. */
10133 p = htab->glink->contents;
10134 p += htab->glink_pltresolve;
10135 endp = htab->glink->contents;
10136 endp += htab->glink->size - GLINK_PLTRESOLVE;
10137 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10139 bfd_put_32 (output_bfd, B + endp - p, p);
10144 bfd_put_32 (output_bfd, NOP, p);
10148 res0 = (htab->glink_pltresolve
10149 + htab->glink->output_section->vma
10150 + htab->glink->output_offset);
10152 if (htab->params->ppc476_workaround)
10154 /* Ensure that a call stub at the end of a page doesn't
10155 result in prefetch over the end of the page into the
10156 glink branch table. */
10157 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10159 bfd_vma glink_start = (htab->glink->output_section->vma
10160 + htab->glink->output_offset);
10162 for (page_addr = res0 & -pagesize;
10163 page_addr > glink_start;
10164 page_addr -= pagesize)
10166 /* We have a plt call stub that may need fixing. */
10170 loc = htab->glink->contents + page_addr - 4 - glink_start;
10171 insn = bfd_get_32 (output_bfd, loc);
10174 /* By alignment, we know that there must be at least
10175 one other call stub before this one. */
10176 insn = bfd_get_32 (output_bfd, loc - 16);
10178 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10180 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10185 /* Last comes the PLTresolve stub. */
10190 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10192 unsigned int insn = pic_plt_resolve[i];
10194 if (htab->params->ppc476_workaround && insn == NOP)
10196 bfd_put_32 (output_bfd, insn, p);
10199 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10201 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10202 + htab->glink->output_section->vma
10203 + htab->glink->output_offset);
10205 bfd_put_32 (output_bfd,
10206 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10207 bfd_put_32 (output_bfd,
10208 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10209 bfd_put_32 (output_bfd,
10210 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10211 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10213 bfd_put_32 (output_bfd,
10214 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10215 bfd_put_32 (output_bfd,
10216 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10220 bfd_put_32 (output_bfd,
10221 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10222 bfd_put_32 (output_bfd,
10223 LWZ_12_12 + 4, p + 9*4);
10228 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10230 unsigned int insn = plt_resolve[i];
10232 if (htab->params->ppc476_workaround && insn == NOP)
10234 bfd_put_32 (output_bfd, insn, p);
10237 p -= 4 * ARRAY_SIZE (plt_resolve);
10239 bfd_put_32 (output_bfd,
10240 LIS_12 + PPC_HA (got + 4), p + 0*4);
10241 bfd_put_32 (output_bfd,
10242 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10243 bfd_put_32 (output_bfd,
10244 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10245 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10247 bfd_put_32 (output_bfd,
10248 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10249 bfd_put_32 (output_bfd,
10250 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10254 bfd_put_32 (output_bfd,
10255 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10256 bfd_put_32 (output_bfd,
10257 LWZ_12_12 + 4, p + 6*4);
10262 if (htab->glink_eh_frame != NULL
10263 && htab->glink_eh_frame->contents != NULL)
10265 unsigned char *p = htab->glink_eh_frame->contents;
10268 p += sizeof (glink_eh_frame_cie);
10273 /* Offset to .glink. */
10274 val = (htab->glink->output_section->vma
10275 + htab->glink->output_offset);
10276 val -= (htab->glink_eh_frame->output_section->vma
10277 + htab->glink_eh_frame->output_offset);
10278 val -= p - htab->glink_eh_frame->contents;
10279 bfd_put_32 (htab->elf.dynobj, val, p);
10281 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10282 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10283 htab->glink_eh_frame,
10284 htab->glink_eh_frame->contents))
10291 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10292 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10293 #define TARGET_BIG_SYM powerpc_elf32_vec
10294 #define TARGET_BIG_NAME "elf32-powerpc"
10295 #define ELF_ARCH bfd_arch_powerpc
10296 #define ELF_TARGET_ID PPC32_ELF_DATA
10297 #define ELF_MACHINE_CODE EM_PPC
10298 #ifdef __QNXTARGET__
10299 #define ELF_MAXPAGESIZE 0x1000
10301 #define ELF_MAXPAGESIZE 0x10000
10303 #define ELF_MINPAGESIZE 0x1000
10304 #define ELF_COMMONPAGESIZE 0x1000
10305 #define elf_info_to_howto ppc_elf_info_to_howto
10307 #ifdef EM_CYGNUS_POWERPC
10308 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10312 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10315 #define elf_backend_plt_not_loaded 1
10316 #define elf_backend_can_gc_sections 1
10317 #define elf_backend_can_refcount 1
10318 #define elf_backend_rela_normal 1
10319 #define elf_backend_caches_rawsize 1
10321 #define bfd_elf32_mkobject ppc_elf_mkobject
10322 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10323 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10324 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10325 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10326 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10327 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10328 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10330 #define elf_backend_object_p ppc_elf_object_p
10331 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10332 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10333 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10334 #define elf_backend_relocate_section ppc_elf_relocate_section
10335 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10336 #define elf_backend_check_relocs ppc_elf_check_relocs
10337 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10338 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10339 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10340 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10341 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10342 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10343 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10344 #define elf_backend_fake_sections ppc_elf_fake_sections
10345 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10346 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10347 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10348 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10349 #define elf_backend_write_core_note ppc_elf_write_core_note
10350 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10351 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10352 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10353 #define elf_backend_write_section ppc_elf_write_section
10354 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10355 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10356 #define elf_backend_action_discarded ppc_elf_action_discarded
10357 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10358 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10359 #define elf_backend_section_processing ppc_elf_section_processing
10361 #include "elf32-target.h"
10363 /* FreeBSD Target */
10365 #undef TARGET_LITTLE_SYM
10366 #undef TARGET_LITTLE_NAME
10368 #undef TARGET_BIG_SYM
10369 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10370 #undef TARGET_BIG_NAME
10371 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10374 #define ELF_OSABI ELFOSABI_FREEBSD
10377 #define elf32_bed elf32_powerpc_fbsd_bed
10379 #include "elf32-target.h"
10381 /* VxWorks Target */
10383 #undef TARGET_LITTLE_SYM
10384 #undef TARGET_LITTLE_NAME
10386 #undef TARGET_BIG_SYM
10387 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10388 #undef TARGET_BIG_NAME
10389 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10393 /* VxWorks uses the elf default section flags for .plt. */
10394 static const struct bfd_elf_special_section *
10395 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10397 if (sec->name == NULL)
10400 if (strcmp (sec->name, ".plt") == 0)
10401 return _bfd_elf_get_sec_type_attr (abfd, sec);
10403 return ppc_elf_get_sec_type_attr (abfd, sec);
10406 /* Like ppc_elf_link_hash_table_create, but overrides
10407 appropriately for VxWorks. */
10408 static struct bfd_link_hash_table *
10409 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10411 struct bfd_link_hash_table *ret;
10413 ret = ppc_elf_link_hash_table_create (abfd);
10416 struct ppc_elf_link_hash_table *htab
10417 = (struct ppc_elf_link_hash_table *)ret;
10418 htab->is_vxworks = 1;
10419 htab->plt_type = PLT_VXWORKS;
10420 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10421 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10422 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10427 /* Tweak magic VxWorks symbols as they are loaded. */
10429 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10430 struct bfd_link_info *info,
10431 Elf_Internal_Sym *sym,
10432 const char **namep ATTRIBUTE_UNUSED,
10433 flagword *flagsp ATTRIBUTE_UNUSED,
10437 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10441 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10445 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10447 ppc_elf_final_write_processing(abfd, linker);
10448 elf_vxworks_final_write_processing(abfd, linker);
10451 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10453 #undef elf_backend_want_plt_sym
10454 #define elf_backend_want_plt_sym 1
10455 #undef elf_backend_want_got_plt
10456 #define elf_backend_want_got_plt 1
10457 #undef elf_backend_got_symbol_offset
10458 #define elf_backend_got_symbol_offset 0
10459 #undef elf_backend_plt_not_loaded
10460 #define elf_backend_plt_not_loaded 0
10461 #undef elf_backend_plt_readonly
10462 #define elf_backend_plt_readonly 1
10463 #undef elf_backend_got_header_size
10464 #define elf_backend_got_header_size 12
10466 #undef bfd_elf32_get_synthetic_symtab
10468 #undef bfd_elf32_bfd_link_hash_table_create
10469 #define bfd_elf32_bfd_link_hash_table_create \
10470 ppc_elf_vxworks_link_hash_table_create
10471 #undef elf_backend_add_symbol_hook
10472 #define elf_backend_add_symbol_hook \
10473 ppc_elf_vxworks_add_symbol_hook
10474 #undef elf_backend_link_output_symbol_hook
10475 #define elf_backend_link_output_symbol_hook \
10476 elf_vxworks_link_output_symbol_hook
10477 #undef elf_backend_final_write_processing
10478 #define elf_backend_final_write_processing \
10479 ppc_elf_vxworks_final_write_processing
10480 #undef elf_backend_get_sec_type_attr
10481 #define elf_backend_get_sec_type_attr \
10482 ppc_elf_vxworks_get_sec_type_attr
10483 #undef elf_backend_emit_relocs
10484 #define elf_backend_emit_relocs \
10485 elf_vxworks_emit_relocs
10488 #define elf32_bed ppc_elf_vxworks_bed
10489 #undef elf_backend_post_process_headers
10491 #include "elf32-target.h"