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 ((ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3640 || ELF_ST_BIND (sym
->st_info
) == STB_GNU_UNIQUE
)
3641 && (abfd
->flags
& DYNAMIC
) == 0
3642 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
3643 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
3648 /* Find a linker generated pointer with a given addend and type. */
3650 static elf_linker_section_pointers_t
*
3651 elf_find_pointer_linker_section
3652 (elf_linker_section_pointers_t
*linker_pointers
,
3654 elf_linker_section_t
*lsect
)
3656 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3657 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3658 return linker_pointers
;
3663 /* Allocate a pointer to live in a linker created section. */
3666 elf_allocate_pointer_linker_section (bfd
*abfd
,
3667 elf_linker_section_t
*lsect
,
3668 struct elf_link_hash_entry
*h
,
3669 const Elf_Internal_Rela
*rel
)
3671 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3672 elf_linker_section_pointers_t
*linker_section_ptr
;
3673 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3676 BFD_ASSERT (lsect
!= NULL
);
3678 /* Is this a global symbol? */
3681 struct ppc_elf_link_hash_entry
*eh
;
3683 /* Has this symbol already been allocated? If so, our work is done. */
3684 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3685 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3690 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3694 BFD_ASSERT (is_ppc_elf (abfd
));
3696 /* Allocation of a pointer to a local symbol. */
3697 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3699 /* Allocate a table to hold the local symbols if first time. */
3702 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3705 amt
*= sizeof (elf_linker_section_pointers_t
*);
3706 ptr
= bfd_zalloc (abfd
, amt
);
3711 elf_local_ptr_offsets (abfd
) = ptr
;
3714 /* Has this symbol already been allocated? If so, our work is done. */
3715 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3720 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3723 /* Allocate space for a pointer in the linker section, and allocate
3724 a new pointer record from internal memory. */
3725 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3726 amt
= sizeof (elf_linker_section_pointers_t
);
3727 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3729 if (!linker_section_ptr
)
3732 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3733 linker_section_ptr
->addend
= rel
->r_addend
;
3734 linker_section_ptr
->lsect
= lsect
;
3735 *ptr_linker_section_ptr
= linker_section_ptr
;
3737 if (!bfd_set_section_alignment (lsect
->section
->owner
, lsect
->section
, 2))
3739 linker_section_ptr
->offset
= lsect
->section
->size
;
3740 lsect
->section
->size
+= 4;
3744 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3745 lsect
->name
, (long) linker_section_ptr
->offset
,
3746 (long) lsect
->section
->size
);
3752 static struct plt_entry
**
3753 update_local_sym_info (bfd
*abfd
,
3754 Elf_Internal_Shdr
*symtab_hdr
,
3755 unsigned long r_symndx
,
3758 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3759 struct plt_entry
**local_plt
;
3760 char *local_got_tls_masks
;
3762 if (local_got_refcounts
== NULL
)
3764 bfd_size_type size
= symtab_hdr
->sh_info
;
3766 size
*= (sizeof (*local_got_refcounts
)
3767 + sizeof (*local_plt
)
3768 + sizeof (*local_got_tls_masks
));
3769 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3770 if (local_got_refcounts
== NULL
)
3772 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3775 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3776 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3777 local_got_tls_masks
[r_symndx
] |= tls_type
;
3778 if (tls_type
!= PLT_IFUNC
)
3779 local_got_refcounts
[r_symndx
] += 1;
3780 return local_plt
+ r_symndx
;
3784 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3785 asection
*sec
, bfd_vma addend
)
3787 struct plt_entry
*ent
;
3791 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3792 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3796 bfd_size_type amt
= sizeof (*ent
);
3797 ent
= bfd_alloc (abfd
, amt
);
3802 ent
->addend
= addend
;
3803 ent
->plt
.refcount
= 0;
3806 ent
->plt
.refcount
+= 1;
3810 static struct plt_entry
*
3811 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3813 struct plt_entry
*ent
;
3817 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3818 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3824 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3826 return (r_type
== R_PPC_PLTREL24
3827 || r_type
== R_PPC_LOCAL24PC
3828 || r_type
== R_PPC_REL24
3829 || r_type
== R_PPC_REL14
3830 || r_type
== R_PPC_REL14_BRTAKEN
3831 || r_type
== R_PPC_REL14_BRNTAKEN
3832 || r_type
== R_PPC_ADDR24
3833 || r_type
== R_PPC_ADDR14
3834 || r_type
== R_PPC_ADDR14_BRTAKEN
3835 || r_type
== R_PPC_ADDR14_BRNTAKEN
);
3839 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3841 (*_bfd_error_handler
)
3842 (_("%B: relocation %s cannot be used when making a shared object"),
3844 ppc_elf_howto_table
[r_type
]->name
);
3845 bfd_set_error (bfd_error_bad_value
);
3848 /* Look through the relocs for a section during the first phase, and
3849 allocate space in the global offset table or procedure linkage
3853 ppc_elf_check_relocs (bfd
*abfd
,
3854 struct bfd_link_info
*info
,
3856 const Elf_Internal_Rela
*relocs
)
3858 struct ppc_elf_link_hash_table
*htab
;
3859 Elf_Internal_Shdr
*symtab_hdr
;
3860 struct elf_link_hash_entry
**sym_hashes
;
3861 const Elf_Internal_Rela
*rel
;
3862 const Elf_Internal_Rela
*rel_end
;
3863 asection
*got2
, *sreloc
;
3864 struct elf_link_hash_entry
*tga
;
3866 if (info
->relocatable
)
3869 /* Don't do anything special with non-loaded, non-alloced sections.
3870 In particular, any relocs in such sections should not affect GOT
3871 and PLT reference counting (ie. we don't allow them to create GOT
3872 or PLT entries), there's no possibility or desire to optimize TLS
3873 relocs, and there's not much point in propagating relocs to shared
3874 libs that the dynamic linker won't relocate. */
3875 if ((sec
->flags
& SEC_ALLOC
) == 0)
3879 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3883 BFD_ASSERT (is_ppc_elf (abfd
));
3885 /* Initialize howto table if not already done. */
3886 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3887 ppc_elf_howto_init ();
3889 htab
= ppc_elf_hash_table (info
);
3890 if (htab
->glink
== NULL
)
3892 if (htab
->elf
.dynobj
== NULL
)
3893 htab
->elf
.dynobj
= abfd
;
3894 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
3897 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3898 FALSE
, FALSE
, TRUE
);
3899 symtab_hdr
= &elf_symtab_hdr (abfd
);
3900 sym_hashes
= elf_sym_hashes (abfd
);
3901 got2
= bfd_get_section_by_name (abfd
, ".got2");
3904 rel_end
= relocs
+ sec
->reloc_count
;
3905 for (rel
= relocs
; rel
< rel_end
; rel
++)
3907 unsigned long r_symndx
;
3908 enum elf_ppc_reloc_type r_type
;
3909 struct elf_link_hash_entry
*h
;
3912 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3913 if (r_symndx
< symtab_hdr
->sh_info
)
3917 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3918 while (h
->root
.type
== bfd_link_hash_indirect
3919 || h
->root
.type
== bfd_link_hash_warning
)
3920 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3922 /* PR15323, ref flags aren't set for references in the same
3924 h
->root
.non_ir_ref
= 1;
3927 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3928 This shows up in particular in an R_PPC_ADDR32 in the eabi
3931 && htab
->got
== NULL
3932 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3934 if (htab
->elf
.dynobj
== NULL
)
3935 htab
->elf
.dynobj
= abfd
;
3936 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3938 BFD_ASSERT (h
== htab
->elf
.hgot
);
3942 r_type
= ELF32_R_TYPE (rel
->r_info
);
3943 if (h
== NULL
&& !htab
->is_vxworks
)
3945 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
3950 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
3952 struct plt_entry
**ifunc
;
3954 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3955 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
3960 /* STT_GNU_IFUNC symbols must have a PLT entry;
3961 In a non-pie executable even when there are
3964 || is_branch_reloc (r_type
))
3967 if (r_type
== R_PPC_PLTREL24
)
3969 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
3971 addend
= rel
->r_addend
;
3973 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
3979 if (!htab
->is_vxworks
3980 && is_branch_reloc (r_type
)
3985 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
3986 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
3987 /* We have a new-style __tls_get_addr call with a marker
3991 /* Mark this section as having an old-style call. */
3992 sec
->has_tls_get_addr_call
= 1;
3999 /* These special tls relocs tie a call to __tls_get_addr with
4000 its parameter symbol. */
4003 case R_PPC_GOT_TLSLD16
:
4004 case R_PPC_GOT_TLSLD16_LO
:
4005 case R_PPC_GOT_TLSLD16_HI
:
4006 case R_PPC_GOT_TLSLD16_HA
:
4007 tls_type
= TLS_TLS
| TLS_LD
;
4010 case R_PPC_GOT_TLSGD16
:
4011 case R_PPC_GOT_TLSGD16_LO
:
4012 case R_PPC_GOT_TLSGD16_HI
:
4013 case R_PPC_GOT_TLSGD16_HA
:
4014 tls_type
= TLS_TLS
| TLS_GD
;
4017 case R_PPC_GOT_TPREL16
:
4018 case R_PPC_GOT_TPREL16_LO
:
4019 case R_PPC_GOT_TPREL16_HI
:
4020 case R_PPC_GOT_TPREL16_HA
:
4022 info
->flags
|= DF_STATIC_TLS
;
4023 tls_type
= TLS_TLS
| TLS_TPREL
;
4026 case R_PPC_GOT_DTPREL16
:
4027 case R_PPC_GOT_DTPREL16_LO
:
4028 case R_PPC_GOT_DTPREL16_HI
:
4029 case R_PPC_GOT_DTPREL16_HA
:
4030 tls_type
= TLS_TLS
| TLS_DTPREL
;
4032 sec
->has_tls_reloc
= 1;
4035 /* GOT16 relocations */
4037 case R_PPC_GOT16_LO
:
4038 case R_PPC_GOT16_HI
:
4039 case R_PPC_GOT16_HA
:
4040 /* This symbol requires a global offset table entry. */
4041 if (htab
->got
== NULL
)
4043 if (htab
->elf
.dynobj
== NULL
)
4044 htab
->elf
.dynobj
= abfd
;
4045 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4050 h
->got
.refcount
+= 1;
4051 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4054 /* This is a global offset table entry for a local symbol. */
4055 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4058 /* We may also need a plt entry if the symbol turns out to be
4060 if (h
!= NULL
&& !info
->shared
)
4062 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4067 /* Indirect .sdata relocation. */
4068 case R_PPC_EMB_SDAI16
:
4071 bad_shared_reloc (abfd
, r_type
);
4074 htab
->sdata
[0].sym
->ref_regular
= 1;
4075 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[0],
4080 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4081 h
->non_got_ref
= TRUE
;
4085 /* Indirect .sdata2 relocation. */
4086 case R_PPC_EMB_SDA2I16
:
4089 bad_shared_reloc (abfd
, r_type
);
4092 htab
->sdata
[1].sym
->ref_regular
= 1;
4093 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[1],
4098 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4099 h
->non_got_ref
= TRUE
;
4103 case R_PPC_SDAREL16
:
4104 htab
->sdata
[0].sym
->ref_regular
= 1;
4107 case R_PPC_VLE_SDAREL_LO16A
:
4108 case R_PPC_VLE_SDAREL_LO16D
:
4109 case R_PPC_VLE_SDAREL_HI16A
:
4110 case R_PPC_VLE_SDAREL_HI16D
:
4111 case R_PPC_VLE_SDAREL_HA16A
:
4112 case R_PPC_VLE_SDAREL_HA16D
:
4115 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4116 h
->non_got_ref
= TRUE
;
4120 case R_PPC_VLE_REL8
:
4121 case R_PPC_VLE_REL15
:
4122 case R_PPC_VLE_REL24
:
4123 case R_PPC_VLE_LO16A
:
4124 case R_PPC_VLE_LO16D
:
4125 case R_PPC_VLE_HI16A
:
4126 case R_PPC_VLE_HI16D
:
4127 case R_PPC_VLE_HA16A
:
4128 case R_PPC_VLE_HA16D
:
4131 case R_PPC_EMB_SDA2REL
:
4134 bad_shared_reloc (abfd
, r_type
);
4137 htab
->sdata
[1].sym
->ref_regular
= 1;
4140 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4141 h
->non_got_ref
= TRUE
;
4145 case R_PPC_VLE_SDA21_LO
:
4146 case R_PPC_VLE_SDA21
:
4147 case R_PPC_EMB_SDA21
:
4148 case R_PPC_EMB_RELSDA
:
4151 bad_shared_reloc (abfd
, r_type
);
4156 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4157 h
->non_got_ref
= TRUE
;
4161 case R_PPC_EMB_NADDR32
:
4162 case R_PPC_EMB_NADDR16
:
4163 case R_PPC_EMB_NADDR16_LO
:
4164 case R_PPC_EMB_NADDR16_HI
:
4165 case R_PPC_EMB_NADDR16_HA
:
4168 bad_shared_reloc (abfd
, r_type
);
4172 h
->non_got_ref
= TRUE
;
4175 case R_PPC_PLTREL24
:
4180 case R_PPC_PLTREL32
:
4181 case R_PPC_PLT16_LO
:
4182 case R_PPC_PLT16_HI
:
4183 case R_PPC_PLT16_HA
:
4185 fprintf (stderr
, "Reloc requires a PLT entry\n");
4187 /* This symbol requires a procedure linkage table entry. We
4188 actually build the entry in finish_dynamic_symbol,
4189 because this might be a case of linking PIC code without
4190 linking in any dynamic objects, in which case we don't
4191 need to generate a procedure linkage table after all. */
4195 /* It does not make sense to have a procedure linkage
4196 table entry for a local symbol. */
4197 info
->callbacks
->einfo (_("%P: %H: %s reloc against local symbol\n"),
4198 abfd
, sec
, rel
->r_offset
,
4199 ppc_elf_howto_table
[r_type
]->name
);
4200 bfd_set_error (bfd_error_bad_value
);
4207 if (r_type
== R_PPC_PLTREL24
)
4209 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4211 addend
= rel
->r_addend
;
4214 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4219 /* The following relocations don't need to propagate the
4220 relocation if linking a shared object since they are
4221 section relative. */
4223 case R_PPC_SECTOFF_LO
:
4224 case R_PPC_SECTOFF_HI
:
4225 case R_PPC_SECTOFF_HA
:
4226 case R_PPC_DTPREL16
:
4227 case R_PPC_DTPREL16_LO
:
4228 case R_PPC_DTPREL16_HI
:
4229 case R_PPC_DTPREL16_HA
:
4234 case R_PPC_REL16_LO
:
4235 case R_PPC_REL16_HI
:
4236 case R_PPC_REL16_HA
:
4237 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4240 /* These are just markers. */
4242 case R_PPC_EMB_MRKREF
:
4246 case R_PPC_RELAX_PLT
:
4247 case R_PPC_RELAX_PLTREL24
:
4250 /* These should only appear in dynamic objects. */
4252 case R_PPC_GLOB_DAT
:
4253 case R_PPC_JMP_SLOT
:
4254 case R_PPC_RELATIVE
:
4255 case R_PPC_IRELATIVE
:
4258 /* These aren't handled yet. We'll report an error later. */
4260 case R_PPC_EMB_RELSEC16
:
4261 case R_PPC_EMB_RELST_LO
:
4262 case R_PPC_EMB_RELST_HI
:
4263 case R_PPC_EMB_RELST_HA
:
4264 case R_PPC_EMB_BIT_FLD
:
4267 /* This refers only to functions defined in the shared library. */
4268 case R_PPC_LOCAL24PC
:
4269 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4271 htab
->plt_type
= PLT_OLD
;
4272 htab
->old_bfd
= abfd
;
4274 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4278 info
->callbacks
->einfo (_("%P: %H: @local call to ifunc %s\n"),
4279 abfd
, sec
, rel
->r_offset
,
4280 h
->root
.root
.string
);
4281 bfd_set_error (bfd_error_bad_value
);
4285 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4290 /* This relocation describes the C++ object vtable hierarchy.
4291 Reconstruct it for later use during GC. */
4292 case R_PPC_GNU_VTINHERIT
:
4293 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4297 /* This relocation describes which C++ vtable entries are actually
4298 used. Record for later use during GC. */
4299 case R_PPC_GNU_VTENTRY
:
4300 BFD_ASSERT (h
!= NULL
);
4302 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4306 /* We shouldn't really be seeing these. */
4309 case R_PPC_TPREL16_LO
:
4310 case R_PPC_TPREL16_HI
:
4311 case R_PPC_TPREL16_HA
:
4313 info
->flags
|= DF_STATIC_TLS
;
4317 case R_PPC_DTPMOD32
:
4318 case R_PPC_DTPREL32
:
4324 && (sec
->flags
& SEC_CODE
) != 0
4326 && htab
->plt_type
== PLT_UNSET
)
4328 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4329 the start of a function, which assembles to a REL32
4330 reference to .got2. If we detect one of these, then
4331 force the old PLT layout because the linker cannot
4332 reliably deduce the GOT pointer value needed for
4335 Elf_Internal_Sym
*isym
;
4337 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4342 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4345 htab
->plt_type
= PLT_OLD
;
4346 htab
->old_bfd
= abfd
;
4349 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4355 case R_PPC_ADDR16_LO
:
4356 case R_PPC_ADDR16_HI
:
4357 case R_PPC_ADDR16_HA
:
4360 if (h
!= NULL
&& !info
->shared
)
4362 /* We may need a plt entry if the symbol turns out to be
4363 a function defined in a dynamic object. */
4364 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4367 /* We may need a copy reloc too. */
4369 h
->pointer_equality_needed
= 1;
4375 case R_PPC_REL14_BRTAKEN
:
4376 case R_PPC_REL14_BRNTAKEN
:
4379 if (h
== htab
->elf
.hgot
)
4381 if (htab
->plt_type
== PLT_UNSET
)
4383 htab
->plt_type
= PLT_OLD
;
4384 htab
->old_bfd
= abfd
;
4392 case R_PPC_ADDR14_BRTAKEN
:
4393 case R_PPC_ADDR14_BRNTAKEN
:
4394 if (h
!= NULL
&& !info
->shared
)
4396 /* We may need a plt entry if the symbol turns out to be
4397 a function defined in a dynamic object. */
4399 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4405 /* If we are creating a shared library, and this is a reloc
4406 against a global symbol, or a non PC relative reloc
4407 against a local symbol, then we need to copy the reloc
4408 into the shared library. However, if we are linking with
4409 -Bsymbolic, we do not need to copy a reloc against a
4410 global symbol which is defined in an object we are
4411 including in the link (i.e., DEF_REGULAR is set). At
4412 this point we have not seen all the input files, so it is
4413 possible that DEF_REGULAR is not set now but will be set
4414 later (it is never cleared). In case of a weak definition,
4415 DEF_REGULAR may be cleared later by a strong definition in
4416 a shared library. We account for that possibility below by
4417 storing information in the dyn_relocs field of the hash
4418 table entry. A similar situation occurs when creating
4419 shared libraries and symbol visibility changes render the
4422 If on the other hand, we are creating an executable, we
4423 may need to keep relocations for symbols satisfied by a
4424 dynamic library if we manage to avoid copy relocs for the
4427 && (must_be_dyn_reloc (info
, r_type
)
4429 && (!SYMBOLIC_BIND (info
, h
)
4430 || h
->root
.type
== bfd_link_hash_defweak
4431 || !h
->def_regular
))))
4432 || (ELIMINATE_COPY_RELOCS
4435 && (h
->root
.type
== bfd_link_hash_defweak
4436 || !h
->def_regular
)))
4440 "ppc_elf_check_relocs needs to "
4441 "create relocation for %s\n",
4442 (h
&& h
->root
.root
.string
4443 ? h
->root
.root
.string
: "<unknown>"));
4447 if (htab
->elf
.dynobj
== NULL
)
4448 htab
->elf
.dynobj
= abfd
;
4450 sreloc
= _bfd_elf_make_dynamic_reloc_section
4451 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4457 /* If this is a global symbol, we count the number of
4458 relocations we need for this symbol. */
4461 struct elf_dyn_relocs
*p
;
4462 struct elf_dyn_relocs
**rel_head
;
4464 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4466 if (p
== NULL
|| p
->sec
!= sec
)
4468 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4471 p
->next
= *rel_head
;
4478 if (!must_be_dyn_reloc (info
, r_type
))
4483 /* Track dynamic relocs needed for local syms too.
4484 We really need local syms available to do this
4486 struct ppc_dyn_relocs
*p
;
4487 struct ppc_dyn_relocs
**rel_head
;
4488 bfd_boolean is_ifunc
;
4491 Elf_Internal_Sym
*isym
;
4493 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4498 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4502 vpp
= &elf_section_data (s
)->local_dynrel
;
4503 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4504 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4506 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4508 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4510 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4513 p
->next
= *rel_head
;
4516 p
->ifunc
= is_ifunc
;
4531 /* Merge object attributes from IBFD into OBFD. Raise an error if
4532 there are conflicting attributes. */
4534 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
4536 obj_attribute
*in_attr
, *in_attrs
;
4537 obj_attribute
*out_attr
, *out_attrs
;
4539 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
4541 /* This is the first object. Copy the attributes. */
4542 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
4544 /* Use the Tag_null value to indicate the attributes have been
4546 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
4551 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4552 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4554 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4555 non-conflicting ones. */
4556 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4557 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4558 if (in_attr
->i
!= out_attr
->i
)
4561 if (out_attr
->i
== 0)
4562 out_attr
->i
= in_attr
->i
;
4563 else if (in_attr
->i
== 0)
4565 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4567 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
4568 else if (out_attr
->i
== 1 && in_attr
->i
== 3)
4570 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4572 else if (out_attr
->i
== 3 && in_attr
->i
== 1)
4574 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4576 else if (out_attr
->i
== 3 && in_attr
->i
== 2)
4578 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4580 else if (out_attr
->i
== 2 && (in_attr
->i
== 1 || in_attr
->i
== 3))
4582 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
4583 else if (in_attr
->i
> 3)
4585 (_("Warning: %B uses unknown floating point ABI %d"), ibfd
,
4589 (_("Warning: %B uses unknown floating point ABI %d"), obfd
,
4593 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4594 merge non-conflicting ones. */
4595 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4596 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4597 if (in_attr
->i
!= out_attr
->i
)
4599 const char *in_abi
= NULL
, *out_abi
= NULL
;
4603 case 1: in_abi
= "generic"; break;
4604 case 2: in_abi
= "AltiVec"; break;
4605 case 3: in_abi
= "SPE"; break;
4608 switch (out_attr
->i
)
4610 case 1: out_abi
= "generic"; break;
4611 case 2: out_abi
= "AltiVec"; break;
4612 case 3: out_abi
= "SPE"; break;
4616 if (out_attr
->i
== 0)
4617 out_attr
->i
= in_attr
->i
;
4618 else if (in_attr
->i
== 0)
4620 /* For now, allow generic to transition to AltiVec or SPE
4621 without a warning. If GCC marked files with their stack
4622 alignment and used don't-care markings for files which are
4623 not affected by the vector ABI, we could warn about this
4625 else if (out_attr
->i
== 1)
4626 out_attr
->i
= in_attr
->i
;
4627 else if (in_attr
->i
== 1)
4629 else if (in_abi
== NULL
)
4631 (_("Warning: %B uses unknown vector ABI %d"), ibfd
,
4633 else if (out_abi
== NULL
)
4635 (_("Warning: %B uses unknown vector ABI %d"), obfd
,
4639 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4640 ibfd
, obfd
, in_abi
, out_abi
);
4643 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4644 and merge non-conflicting ones. */
4645 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4646 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4647 if (in_attr
->i
!= out_attr
->i
)
4650 if (out_attr
->i
== 0)
4651 out_attr
->i
= in_attr
->i
;
4652 else if (in_attr
->i
== 0)
4654 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4656 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd
, ibfd
);
4657 else if (out_attr
->i
== 2 && in_attr
->i
== 1)
4659 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd
, obfd
);
4660 else if (in_attr
->i
> 2)
4662 (_("Warning: %B uses unknown small structure return convention %d"), ibfd
,
4666 (_("Warning: %B uses unknown small structure return convention %d"), obfd
,
4670 /* Merge Tag_compatibility attributes and any common GNU ones. */
4671 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
4676 /* Merge backend specific data from an object file to the output
4677 object file when linking. */
4680 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4686 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4689 /* Check if we have the same endianness. */
4690 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
4693 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
4696 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4697 old_flags
= elf_elfheader (obfd
)->e_flags
;
4698 if (!elf_flags_init (obfd
))
4700 /* First call, no flags set. */
4701 elf_flags_init (obfd
) = TRUE
;
4702 elf_elfheader (obfd
)->e_flags
= new_flags
;
4705 /* Compatible flags are ok. */
4706 else if (new_flags
== old_flags
)
4709 /* Incompatible flags. */
4712 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4713 to be linked with either. */
4715 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4716 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4719 (*_bfd_error_handler
)
4720 (_("%B: compiled with -mrelocatable and linked with "
4721 "modules compiled normally"), ibfd
);
4723 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4724 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4727 (*_bfd_error_handler
)
4728 (_("%B: compiled normally and linked with "
4729 "modules compiled with -mrelocatable"), ibfd
);
4732 /* The output is -mrelocatable-lib iff both the input files are. */
4733 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4734 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4736 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4737 but each input file is either -mrelocatable or -mrelocatable-lib. */
4738 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4739 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4740 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4741 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4743 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4744 any module uses it. */
4745 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4747 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4748 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4750 /* Warn about any other mismatches. */
4751 if (new_flags
!= old_flags
)
4754 (*_bfd_error_handler
)
4755 (_("%B: uses different e_flags (0x%lx) fields "
4756 "than previous modules (0x%lx)"),
4757 ibfd
, (long) new_flags
, (long) old_flags
);
4762 bfd_set_error (bfd_error_bad_value
);
4771 ppc_elf_vle_split16 (bfd
*output_bfd
, bfd_byte
*loc
,
4773 split16_format_type split16_format
)
4776 unsigned int insn
, top5
;
4778 insn
= bfd_get_32 (output_bfd
, loc
);
4779 top5
= value
& 0xf800;
4780 top5
= top5
<< (split16_format
== split16a_type
? 9 : 5);
4782 insn
|= value
& 0x7ff;
4783 bfd_put_32 (output_bfd
, insn
, loc
);
4787 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4788 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4790 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4791 struct bfd_link_info
*info
)
4793 struct ppc_elf_link_hash_table
*htab
;
4796 htab
= ppc_elf_hash_table (info
);
4798 if (htab
->plt_type
== PLT_UNSET
)
4800 struct elf_link_hash_entry
*h
;
4802 if (htab
->params
->plt_style
== PLT_OLD
)
4803 htab
->plt_type
= PLT_OLD
;
4804 else if (info
->shared
4805 && htab
->elf
.dynamic_sections_created
4806 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
4807 FALSE
, FALSE
, TRUE
)) != NULL
4808 && (h
->type
== STT_FUNC
4811 && !(SYMBOL_CALLS_LOCAL (info
, h
)
4812 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4813 && h
->root
.type
== bfd_link_hash_undefweak
)))
4815 /* Profiling of shared libs (and pies) is not supported with
4816 secure plt, because ppc32 does profiling before a
4817 function prologue and a secure plt pic call stubs needs
4818 r30 to be set up. */
4819 htab
->plt_type
= PLT_OLD
;
4824 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
4826 /* Look through the reloc flags left by ppc_elf_check_relocs.
4827 Use the old style bss plt if a file makes plt calls
4828 without using the new relocs, and if ld isn't given
4829 --secure-plt and we never see REL16 relocs. */
4830 if (plt_type
== PLT_UNSET
)
4832 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
4833 if (is_ppc_elf (ibfd
))
4835 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4837 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
4840 htab
->old_bfd
= ibfd
;
4844 htab
->plt_type
= plt_type
;
4847 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
4849 if (htab
->old_bfd
!= NULL
)
4850 info
->callbacks
->einfo (_("%P: bss-plt forced due to %B\n"),
4853 info
->callbacks
->einfo (_("%P: bss-plt forced by profiling\n"));
4856 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
4858 if (htab
->plt_type
== PLT_NEW
)
4860 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
4861 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4863 /* The new PLT is a loaded section. */
4864 if (htab
->plt
!= NULL
4865 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
4868 /* The new GOT is not executable. */
4869 if (htab
->got
!= NULL
4870 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
4875 /* Stop an unused .glink section from affecting .text alignment. */
4876 if (htab
->glink
!= NULL
4877 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
4880 return htab
->plt_type
== PLT_NEW
;
4883 /* Return the section that should be marked against GC for a given
4887 ppc_elf_gc_mark_hook (asection
*sec
,
4888 struct bfd_link_info
*info
,
4889 Elf_Internal_Rela
*rel
,
4890 struct elf_link_hash_entry
*h
,
4891 Elf_Internal_Sym
*sym
)
4894 switch (ELF32_R_TYPE (rel
->r_info
))
4896 case R_PPC_GNU_VTINHERIT
:
4897 case R_PPC_GNU_VTENTRY
:
4901 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
4904 /* Update the got, plt and dynamic reloc reference counts for the
4905 section being removed. */
4908 ppc_elf_gc_sweep_hook (bfd
*abfd
,
4909 struct bfd_link_info
*info
,
4911 const Elf_Internal_Rela
*relocs
)
4913 struct ppc_elf_link_hash_table
*htab
;
4914 Elf_Internal_Shdr
*symtab_hdr
;
4915 struct elf_link_hash_entry
**sym_hashes
;
4916 bfd_signed_vma
*local_got_refcounts
;
4917 const Elf_Internal_Rela
*rel
, *relend
;
4920 if (info
->relocatable
)
4923 if ((sec
->flags
& SEC_ALLOC
) == 0)
4926 elf_section_data (sec
)->local_dynrel
= NULL
;
4928 htab
= ppc_elf_hash_table (info
);
4929 symtab_hdr
= &elf_symtab_hdr (abfd
);
4930 sym_hashes
= elf_sym_hashes (abfd
);
4931 local_got_refcounts
= elf_local_got_refcounts (abfd
);
4932 got2
= bfd_get_section_by_name (abfd
, ".got2");
4934 relend
= relocs
+ sec
->reloc_count
;
4935 for (rel
= relocs
; rel
< relend
; rel
++)
4937 unsigned long r_symndx
;
4938 enum elf_ppc_reloc_type r_type
;
4939 struct elf_link_hash_entry
*h
= NULL
;
4941 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4942 if (r_symndx
>= symtab_hdr
->sh_info
)
4944 struct elf_dyn_relocs
**pp
, *p
;
4945 struct ppc_elf_link_hash_entry
*eh
;
4947 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4948 while (h
->root
.type
== bfd_link_hash_indirect
4949 || h
->root
.type
== bfd_link_hash_warning
)
4950 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4951 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4953 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4956 /* Everything must go for SEC. */
4962 r_type
= ELF32_R_TYPE (rel
->r_info
);
4963 if (!htab
->is_vxworks
4965 && local_got_refcounts
!= NULL
4967 || is_branch_reloc (r_type
)))
4969 struct plt_entry
**local_plt
= (struct plt_entry
**)
4970 (local_got_refcounts
+ symtab_hdr
->sh_info
);
4971 char *local_got_tls_masks
= (char *)
4972 (local_plt
+ symtab_hdr
->sh_info
);
4973 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
4975 struct plt_entry
**ifunc
= local_plt
+ r_symndx
;
4977 struct plt_entry
*ent
;
4979 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
4980 addend
= rel
->r_addend
;
4981 ent
= find_plt_ent (ifunc
, got2
, addend
);
4982 if (ent
->plt
.refcount
> 0)
4983 ent
->plt
.refcount
-= 1;
4990 case R_PPC_GOT_TLSLD16
:
4991 case R_PPC_GOT_TLSLD16_LO
:
4992 case R_PPC_GOT_TLSLD16_HI
:
4993 case R_PPC_GOT_TLSLD16_HA
:
4994 case R_PPC_GOT_TLSGD16
:
4995 case R_PPC_GOT_TLSGD16_LO
:
4996 case R_PPC_GOT_TLSGD16_HI
:
4997 case R_PPC_GOT_TLSGD16_HA
:
4998 case R_PPC_GOT_TPREL16
:
4999 case R_PPC_GOT_TPREL16_LO
:
5000 case R_PPC_GOT_TPREL16_HI
:
5001 case R_PPC_GOT_TPREL16_HA
:
5002 case R_PPC_GOT_DTPREL16
:
5003 case R_PPC_GOT_DTPREL16_LO
:
5004 case R_PPC_GOT_DTPREL16_HI
:
5005 case R_PPC_GOT_DTPREL16_HA
:
5007 case R_PPC_GOT16_LO
:
5008 case R_PPC_GOT16_HI
:
5009 case R_PPC_GOT16_HA
:
5012 if (h
->got
.refcount
> 0)
5016 struct plt_entry
*ent
;
5018 ent
= find_plt_ent (&h
->plt
.plist
, NULL
, 0);
5019 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5020 ent
->plt
.refcount
-= 1;
5023 else if (local_got_refcounts
!= NULL
)
5025 if (local_got_refcounts
[r_symndx
] > 0)
5026 local_got_refcounts
[r_symndx
]--;
5032 case R_PPC_REL14_BRTAKEN
:
5033 case R_PPC_REL14_BRNTAKEN
:
5035 if (h
== NULL
|| h
== htab
->elf
.hgot
)
5042 case R_PPC_ADDR16_LO
:
5043 case R_PPC_ADDR16_HI
:
5044 case R_PPC_ADDR16_HA
:
5046 case R_PPC_ADDR14_BRTAKEN
:
5047 case R_PPC_ADDR14_BRNTAKEN
:
5054 case R_PPC_PLTREL24
:
5055 case R_PPC_PLTREL32
:
5056 case R_PPC_PLT16_LO
:
5057 case R_PPC_PLT16_HI
:
5058 case R_PPC_PLT16_HA
:
5062 struct plt_entry
*ent
;
5064 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
5065 addend
= rel
->r_addend
;
5066 ent
= find_plt_ent (&h
->plt
.plist
, got2
, addend
);
5067 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5068 ent
->plt
.refcount
-= 1;
5079 /* Set plt output section type, htab->tls_get_addr, and call the
5080 generic ELF tls_setup function. */
5083 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5085 struct ppc_elf_link_hash_table
*htab
;
5087 htab
= ppc_elf_hash_table (info
);
5088 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5089 FALSE
, FALSE
, TRUE
);
5090 if (!htab
->params
->no_tls_get_addr_opt
)
5092 struct elf_link_hash_entry
*opt
, *tga
;
5093 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5094 FALSE
, FALSE
, TRUE
);
5096 && (opt
->root
.type
== bfd_link_hash_defined
5097 || opt
->root
.type
== bfd_link_hash_defweak
))
5099 /* If glibc supports an optimized __tls_get_addr call stub,
5100 signalled by the presence of __tls_get_addr_opt, and we'll
5101 be calling __tls_get_addr via a plt call stub, then
5102 make __tls_get_addr point to __tls_get_addr_opt. */
5103 tga
= htab
->tls_get_addr
;
5104 if (htab
->elf
.dynamic_sections_created
5106 && (tga
->type
== STT_FUNC
5108 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5109 || (ELF_ST_VISIBILITY (tga
->other
) != STV_DEFAULT
5110 && tga
->root
.type
== bfd_link_hash_undefweak
)))
5112 struct plt_entry
*ent
;
5113 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5114 if (ent
->plt
.refcount
> 0)
5118 tga
->root
.type
= bfd_link_hash_indirect
;
5119 tga
->root
.u
.i
.link
= &opt
->root
;
5120 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5121 if (opt
->dynindx
!= -1)
5123 /* Use __tls_get_addr_opt in dynamic relocations. */
5125 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5127 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5130 htab
->tls_get_addr
= opt
;
5135 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5137 if (htab
->plt_type
== PLT_NEW
5138 && htab
->plt
!= NULL
5139 && htab
->plt
->output_section
!= NULL
)
5141 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
5142 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5145 return _bfd_elf_tls_setup (obfd
, info
);
5148 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5152 branch_reloc_hash_match (const bfd
*ibfd
,
5153 const Elf_Internal_Rela
*rel
,
5154 const struct elf_link_hash_entry
*hash
)
5156 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5157 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5158 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5160 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5162 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5163 struct elf_link_hash_entry
*h
;
5165 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5166 while (h
->root
.type
== bfd_link_hash_indirect
5167 || h
->root
.type
== bfd_link_hash_warning
)
5168 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5175 /* Run through all the TLS relocs looking for optimization
5179 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5180 struct bfd_link_info
*info
)
5184 struct ppc_elf_link_hash_table
*htab
;
5187 if (info
->relocatable
|| !info
->executable
)
5190 htab
= ppc_elf_hash_table (info
);
5194 /* Make two passes through the relocs. First time check that tls
5195 relocs involved in setting up a tls_get_addr call are indeed
5196 followed by such a call. If they are not, don't do any tls
5197 optimization. On the second pass twiddle tls_mask flags to
5198 notify relocate_section that optimization can be done, and
5199 adjust got and plt refcounts. */
5200 for (pass
= 0; pass
< 2; ++pass
)
5201 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
5203 Elf_Internal_Sym
*locsyms
= NULL
;
5204 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5205 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5207 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5208 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5210 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5211 int expecting_tls_get_addr
= 0;
5213 /* Read the relocations. */
5214 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5216 if (relstart
== NULL
)
5219 relend
= relstart
+ sec
->reloc_count
;
5220 for (rel
= relstart
; rel
< relend
; rel
++)
5222 enum elf_ppc_reloc_type r_type
;
5223 unsigned long r_symndx
;
5224 struct elf_link_hash_entry
*h
= NULL
;
5226 char tls_set
, tls_clear
;
5227 bfd_boolean is_local
;
5228 bfd_signed_vma
*got_count
;
5230 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5231 if (r_symndx
>= symtab_hdr
->sh_info
)
5233 struct elf_link_hash_entry
**sym_hashes
;
5235 sym_hashes
= elf_sym_hashes (ibfd
);
5236 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5237 while (h
->root
.type
== bfd_link_hash_indirect
5238 || h
->root
.type
== bfd_link_hash_warning
)
5239 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5247 r_type
= ELF32_R_TYPE (rel
->r_info
);
5248 /* If this section has old-style __tls_get_addr calls
5249 without marker relocs, then check that each
5250 __tls_get_addr call reloc is preceded by a reloc
5251 that conceivably belongs to the __tls_get_addr arg
5252 setup insn. If we don't find matching arg setup
5253 relocs, don't do any tls optimization. */
5255 && sec
->has_tls_get_addr_call
5257 && h
== htab
->tls_get_addr
5258 && !expecting_tls_get_addr
5259 && is_branch_reloc (r_type
))
5261 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5262 "TLS optimization disabled\n",
5263 ibfd
, sec
, rel
->r_offset
);
5264 if (elf_section_data (sec
)->relocs
!= relstart
)
5269 expecting_tls_get_addr
= 0;
5272 case R_PPC_GOT_TLSLD16
:
5273 case R_PPC_GOT_TLSLD16_LO
:
5274 expecting_tls_get_addr
= 1;
5277 case R_PPC_GOT_TLSLD16_HI
:
5278 case R_PPC_GOT_TLSLD16_HA
:
5279 /* These relocs should never be against a symbol
5280 defined in a shared lib. Leave them alone if
5281 that turns out to be the case. */
5290 case R_PPC_GOT_TLSGD16
:
5291 case R_PPC_GOT_TLSGD16_LO
:
5292 expecting_tls_get_addr
= 1;
5295 case R_PPC_GOT_TLSGD16_HI
:
5296 case R_PPC_GOT_TLSGD16_HA
:
5302 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5306 case R_PPC_GOT_TPREL16
:
5307 case R_PPC_GOT_TPREL16_LO
:
5308 case R_PPC_GOT_TPREL16_HI
:
5309 case R_PPC_GOT_TPREL16_HA
:
5314 tls_clear
= TLS_TPREL
;
5322 expecting_tls_get_addr
= 2;
5333 if (!expecting_tls_get_addr
5334 || (expecting_tls_get_addr
== 1
5335 && !sec
->has_tls_get_addr_call
))
5338 if (rel
+ 1 < relend
5339 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5340 htab
->tls_get_addr
))
5343 /* Uh oh, we didn't find the expected call. We
5344 could just mark this symbol to exclude it
5345 from tls optimization but it's safer to skip
5346 the entire optimization. */
5347 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5348 "TLS optimization disabled\n"),
5349 ibfd
, sec
, rel
->r_offset
);
5350 if (elf_section_data (sec
)->relocs
!= relstart
)
5355 if (expecting_tls_get_addr
)
5357 struct plt_entry
*ent
;
5361 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5362 addend
= rel
[1].r_addend
;
5363 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5365 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5366 ent
->plt
.refcount
-= 1;
5368 if (expecting_tls_get_addr
== 2)
5374 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5375 got_count
= &h
->got
.refcount
;
5379 bfd_signed_vma
*lgot_refs
;
5380 struct plt_entry
**local_plt
;
5383 if (locsyms
== NULL
)
5385 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5386 if (locsyms
== NULL
)
5387 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5388 symtab_hdr
->sh_info
,
5389 0, NULL
, NULL
, NULL
);
5390 if (locsyms
== NULL
)
5392 if (elf_section_data (sec
)->relocs
!= relstart
)
5397 lgot_refs
= elf_local_got_refcounts (ibfd
);
5398 if (lgot_refs
== NULL
)
5400 local_plt
= (struct plt_entry
**)
5401 (lgot_refs
+ symtab_hdr
->sh_info
);
5402 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
5403 tls_mask
= &lgot_masks
[r_symndx
];
5404 got_count
= &lgot_refs
[r_symndx
];
5409 /* We managed to get rid of a got entry. */
5414 *tls_mask
|= tls_set
;
5415 *tls_mask
&= ~tls_clear
;
5418 if (elf_section_data (sec
)->relocs
!= relstart
)
5423 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
5425 if (!info
->keep_memory
)
5428 symtab_hdr
->contents
= (unsigned char *) locsyms
;
5434 /* Return true if we have dynamic relocs that apply to read-only sections. */
5437 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5439 struct elf_dyn_relocs
*p
;
5441 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5443 asection
*s
= p
->sec
->output_section
;
5446 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
5447 == (SEC_READONLY
| SEC_ALLOC
)))
5453 /* Adjust a symbol defined by a dynamic object and referenced by a
5454 regular object. The current definition is in some section of the
5455 dynamic object, but we're not including those sections. We have to
5456 change the definition to something the rest of the link can
5460 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5461 struct elf_link_hash_entry
*h
)
5463 struct ppc_elf_link_hash_table
*htab
;
5467 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5468 h
->root
.root
.string
);
5471 /* Make sure we know what is going on here. */
5472 htab
= ppc_elf_hash_table (info
);
5473 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5475 || h
->type
== STT_GNU_IFUNC
5476 || h
->u
.weakdef
!= NULL
5479 && !h
->def_regular
)));
5481 /* Deal with function syms. */
5482 if (h
->type
== STT_FUNC
5483 || h
->type
== STT_GNU_IFUNC
5486 /* Clear procedure linkage table information for any symbol that
5487 won't need a .plt entry. */
5488 struct plt_entry
*ent
;
5489 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5490 if (ent
->plt
.refcount
> 0)
5493 || (h
->type
!= STT_GNU_IFUNC
5494 && (SYMBOL_CALLS_LOCAL (info
, h
)
5495 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5496 && h
->root
.type
== bfd_link_hash_undefweak
))))
5498 /* A PLT entry is not required/allowed when:
5500 1. We are not using ld.so; because then the PLT entry
5501 can't be set up, so we can't use one. In this case,
5502 ppc_elf_adjust_dynamic_symbol won't even be called.
5504 2. GC has rendered the entry unused.
5506 3. We know for certain that a call to this symbol
5507 will go to this object, or will remain undefined. */
5508 h
->plt
.plist
= NULL
;
5510 h
->pointer_equality_needed
= 0;
5514 /* Taking a function's address in a read/write section
5515 doesn't require us to define the function symbol in the
5516 executable on a plt call stub. A dynamic reloc can
5518 if (h
->pointer_equality_needed
5519 && h
->type
!= STT_GNU_IFUNC
5520 && !htab
->is_vxworks
5521 && !ppc_elf_hash_entry (h
)->has_sda_refs
5522 && !readonly_dynrelocs (h
))
5524 h
->pointer_equality_needed
= 0;
5528 /* After adjust_dynamic_symbol, non_got_ref set in the
5529 non-shared case means that we have allocated space in
5530 .dynbss for the symbol and thus dyn_relocs for this
5531 symbol should be discarded.
5532 If we get here we know we are making a PLT entry for this
5533 symbol, and in an executable we'd normally resolve
5534 relocations against this symbol to the PLT entry. Allow
5535 dynamic relocs if the reference is weak, and the dynamic
5536 relocs will not cause text relocation. */
5537 else if (!h
->ref_regular_nonweak
5539 && h
->type
!= STT_GNU_IFUNC
5540 && !htab
->is_vxworks
5541 && !ppc_elf_hash_entry (h
)->has_sda_refs
5542 && !readonly_dynrelocs (h
))
5548 h
->plt
.plist
= NULL
;
5550 /* If this is a weak symbol, and there is a real definition, the
5551 processor independent code will have arranged for us to see the
5552 real definition first, and we can just use the same value. */
5553 if (h
->u
.weakdef
!= NULL
)
5555 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5556 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5557 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5558 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5559 if (ELIMINATE_COPY_RELOCS
)
5560 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5564 /* This is a reference to a symbol defined by a dynamic object which
5565 is not a function. */
5567 /* If we are creating a shared library, we must presume that the
5568 only references to the symbol are via the global offset table.
5569 For such cases we need not do anything here; the relocations will
5570 be handled correctly by relocate_section. */
5574 /* If there are no references to this symbol that do not use the
5575 GOT, we don't need to generate a copy reloc. */
5576 if (!h
->non_got_ref
)
5579 /* If we didn't find any dynamic relocs in read-only sections, then
5580 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5581 We can't do this if there are any small data relocations. This
5582 doesn't work on VxWorks, where we can not have dynamic
5583 relocations (other than copy and jump slot relocations) in an
5585 if (ELIMINATE_COPY_RELOCS
5586 && !ppc_elf_hash_entry (h
)->has_sda_refs
5587 && !htab
->is_vxworks
5589 && !readonly_dynrelocs (h
))
5595 /* We must allocate the symbol in our .dynbss section, which will
5596 become part of the .bss section of the executable. There will be
5597 an entry for this symbol in the .dynsym section. The dynamic
5598 object will contain position independent code, so all references
5599 from the dynamic object to this symbol will go through the global
5600 offset table. The dynamic linker will use the .dynsym entry to
5601 determine the address it must put in the global offset table, so
5602 both the dynamic object and the regular object will refer to the
5603 same memory location for the variable.
5605 Of course, if the symbol is referenced using SDAREL relocs, we
5606 must instead allocate it in .sbss. */
5608 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5612 BFD_ASSERT (s
!= NULL
);
5614 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5615 copy the initial value out of the dynamic object and into the
5616 runtime process image. We need to remember the offset into the
5617 .rela.bss section we are going to use. */
5618 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5622 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5623 srel
= htab
->relsbss
;
5625 srel
= htab
->relbss
;
5626 BFD_ASSERT (srel
!= NULL
);
5627 srel
->size
+= sizeof (Elf32_External_Rela
);
5631 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
5634 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5635 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5636 specifying the addend on the plt relocation. For -fpic code, the sym
5637 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5638 xxxxxxxx.got2.plt_pic32.<callee>. */
5641 add_stub_sym (struct plt_entry
*ent
,
5642 struct elf_link_hash_entry
*h
,
5643 struct bfd_link_info
*info
)
5645 struct elf_link_hash_entry
*sh
;
5646 size_t len1
, len2
, len3
;
5649 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5652 stub
= ".plt_pic32.";
5654 stub
= ".plt_call32.";
5656 len1
= strlen (h
->root
.root
.string
);
5657 len2
= strlen (stub
);
5660 len3
= strlen (ent
->sec
->name
);
5661 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5664 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5666 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5667 memcpy (name
+ 8 + len3
, stub
, len2
);
5668 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5669 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5672 if (sh
->root
.type
== bfd_link_hash_new
)
5674 sh
->root
.type
= bfd_link_hash_defined
;
5675 sh
->root
.u
.def
.section
= htab
->glink
;
5676 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5677 sh
->ref_regular
= 1;
5678 sh
->def_regular
= 1;
5679 sh
->ref_regular_nonweak
= 1;
5680 sh
->forced_local
= 1;
5686 /* Allocate NEED contiguous space in .got, and return the offset.
5687 Handles allocation of the got header when crossing 32k. */
5690 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5693 unsigned int max_before_header
;
5695 if (htab
->plt_type
== PLT_VXWORKS
)
5697 where
= htab
->got
->size
;
5698 htab
->got
->size
+= need
;
5702 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5703 if (need
<= htab
->got_gap
)
5705 where
= max_before_header
- htab
->got_gap
;
5706 htab
->got_gap
-= need
;
5710 if (htab
->got
->size
+ need
> max_before_header
5711 && htab
->got
->size
<= max_before_header
)
5713 htab
->got_gap
= max_before_header
- htab
->got
->size
;
5714 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
5716 where
= htab
->got
->size
;
5717 htab
->got
->size
+= need
;
5723 /* Allocate space in associated reloc sections for dynamic relocs. */
5726 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5728 struct bfd_link_info
*info
= inf
;
5729 struct ppc_elf_link_hash_entry
*eh
;
5730 struct ppc_elf_link_hash_table
*htab
;
5731 struct elf_dyn_relocs
*p
;
5733 if (h
->root
.type
== bfd_link_hash_indirect
)
5736 htab
= ppc_elf_hash_table (info
);
5737 if (htab
->elf
.dynamic_sections_created
5738 || h
->type
== STT_GNU_IFUNC
)
5740 struct plt_entry
*ent
;
5741 bfd_boolean doneone
= FALSE
;
5742 bfd_vma plt_offset
= 0, glink_offset
= 0;
5745 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5746 if (ent
->plt
.refcount
> 0)
5748 /* Make sure this symbol is output as a dynamic symbol. */
5749 if (h
->dynindx
== -1
5752 && htab
->elf
.dynamic_sections_created
)
5754 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5758 dyn
= htab
->elf
.dynamic_sections_created
;
5760 || h
->type
== STT_GNU_IFUNC
5761 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
5763 asection
*s
= htab
->plt
;
5764 if (!dyn
|| h
->dynindx
== -1)
5767 if (htab
->plt_type
== PLT_NEW
|| !dyn
|| h
->dynindx
== -1)
5771 plt_offset
= s
->size
;
5774 ent
->plt
.offset
= plt_offset
;
5777 if (!doneone
|| info
->shared
)
5779 glink_offset
= s
->size
;
5780 s
->size
+= GLINK_ENTRY_SIZE
;
5781 if (h
== htab
->tls_get_addr
5782 && !htab
->params
->no_tls_get_addr_opt
)
5783 s
->size
+= TLS_GET_ADDR_GLINK_SIZE
- GLINK_ENTRY_SIZE
;
5790 h
->root
.u
.def
.section
= s
;
5791 h
->root
.u
.def
.value
= glink_offset
;
5793 ent
->glink_offset
= glink_offset
;
5795 if (htab
->params
->emit_stub_syms
5796 && !add_stub_sym (ent
, h
, info
))
5803 /* If this is the first .plt entry, make room
5804 for the special first entry. */
5806 s
->size
+= htab
->plt_initial_entry_size
;
5808 /* The PowerPC PLT is actually composed of two
5809 parts, the first part is 2 words (for a load
5810 and a jump), and then there is a remaining
5811 word available at the end. */
5812 plt_offset
= (htab
->plt_initial_entry_size
5813 + (htab
->plt_slot_size
5815 - htab
->plt_initial_entry_size
)
5816 / htab
->plt_entry_size
)));
5818 /* If this symbol is not defined in a regular
5819 file, and we are not generating a shared
5820 library, then set the symbol to this location
5821 in the .plt. This is to avoid text
5822 relocations, and is required to make
5823 function pointers compare as equal between
5824 the normal executable and the shared library. */
5829 h
->root
.u
.def
.section
= s
;
5830 h
->root
.u
.def
.value
= plt_offset
;
5833 /* Make room for this entry. */
5834 s
->size
+= htab
->plt_entry_size
;
5835 /* After the 8192nd entry, room for two entries
5837 if (htab
->plt_type
== PLT_OLD
5838 && (s
->size
- htab
->plt_initial_entry_size
)
5839 / htab
->plt_entry_size
5840 > PLT_NUM_SINGLE_ENTRIES
)
5841 s
->size
+= htab
->plt_entry_size
;
5843 ent
->plt
.offset
= plt_offset
;
5846 /* We also need to make an entry in the .rela.plt section. */
5849 if (!htab
->elf
.dynamic_sections_created
5850 || h
->dynindx
== -1)
5851 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
5854 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
5856 if (htab
->plt_type
== PLT_VXWORKS
)
5858 /* Allocate space for the unloaded relocations. */
5860 && htab
->elf
.dynamic_sections_created
)
5863 == (bfd_vma
) htab
->plt_initial_entry_size
)
5865 htab
->srelplt2
->size
5866 += (sizeof (Elf32_External_Rela
)
5867 * VXWORKS_PLTRESOLVE_RELOCS
);
5870 htab
->srelplt2
->size
5871 += (sizeof (Elf32_External_Rela
)
5872 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
5875 /* Every PLT entry has an associated GOT entry in
5877 htab
->sgotplt
->size
+= 4;
5884 ent
->plt
.offset
= (bfd_vma
) -1;
5887 ent
->plt
.offset
= (bfd_vma
) -1;
5891 h
->plt
.plist
= NULL
;
5897 h
->plt
.plist
= NULL
;
5901 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5902 if (eh
->elf
.got
.refcount
> 0)
5907 /* Make sure this symbol is output as a dynamic symbol. */
5908 if (eh
->elf
.dynindx
== -1
5909 && !eh
->elf
.forced_local
5910 && eh
->elf
.type
!= STT_GNU_IFUNC
5911 && htab
->elf
.dynamic_sections_created
)
5913 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
5918 if ((eh
->tls_mask
& TLS_TLS
) != 0)
5920 if ((eh
->tls_mask
& TLS_LD
) != 0)
5922 if (!eh
->elf
.def_dynamic
)
5923 /* We'll just use htab->tlsld_got.offset. This should
5924 always be the case. It's a little odd if we have
5925 a local dynamic reloc against a non-local symbol. */
5926 htab
->tlsld_got
.refcount
+= 1;
5930 if ((eh
->tls_mask
& TLS_GD
) != 0)
5932 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5934 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
5940 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5943 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5944 dyn
= htab
->elf
.dynamic_sections_created
;
5946 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
5947 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
5948 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
5950 asection
*rsec
= htab
->relgot
;
5952 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5953 rsec
= htab
->reliplt
;
5954 /* All the entries we allocated need relocs.
5955 Except LD only needs one. */
5956 if ((eh
->tls_mask
& TLS_LD
) != 0
5957 && eh
->elf
.def_dynamic
)
5959 rsec
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
5964 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5966 if (eh
->dyn_relocs
== NULL
5967 || !htab
->elf
.dynamic_sections_created
)
5970 /* In the shared -Bsymbolic case, discard space allocated for
5971 dynamic pc-relative relocs against symbols which turn out to be
5972 defined in regular objects. For the normal shared case, discard
5973 space for relocs that have become local due to symbol visibility
5978 /* Relocs that use pc_count are those that appear on a call insn,
5979 or certain REL relocs (see must_be_dyn_reloc) that can be
5980 generated via assembly. We want calls to protected symbols to
5981 resolve directly to the function rather than going via the plt.
5982 If people want function pointer comparisons to work as expected
5983 then they should avoid writing weird assembly. */
5984 if (SYMBOL_CALLS_LOCAL (info
, h
))
5986 struct elf_dyn_relocs
**pp
;
5988 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5990 p
->count
-= p
->pc_count
;
5999 if (htab
->is_vxworks
)
6001 struct elf_dyn_relocs
**pp
;
6003 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6005 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
6012 /* Discard relocs on undefined symbols that must be local. */
6013 if (eh
->dyn_relocs
!= NULL
6014 && h
->root
.type
== bfd_link_hash_undefined
6015 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
6016 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
6017 eh
->dyn_relocs
= NULL
;
6019 /* Also discard relocs on undefined weak syms with non-default
6021 if (eh
->dyn_relocs
!= NULL
6022 && h
->root
.type
== bfd_link_hash_undefweak
)
6024 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
6025 eh
->dyn_relocs
= NULL
;
6027 /* Make sure undefined weak symbols are output as a dynamic
6029 else if (h
->dynindx
== -1
6033 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6038 else if (ELIMINATE_COPY_RELOCS
)
6040 /* For the non-shared case, discard space for relocs against
6041 symbols which turn out to need copy relocs or are not
6047 /* Make sure this symbol is output as a dynamic symbol.
6048 Undefined weak syms won't yet be marked as dynamic. */
6049 if (h
->dynindx
== -1
6050 && !h
->forced_local
)
6052 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6056 /* If that succeeded, we know we'll be keeping all the
6058 if (h
->dynindx
!= -1)
6062 eh
->dyn_relocs
= NULL
;
6067 /* Finally, allocate space. */
6068 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6070 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6071 if (eh
->elf
.type
== STT_GNU_IFUNC
)
6072 sreloc
= htab
->reliplt
;
6073 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6079 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6080 read-only sections. */
6083 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
6085 if (h
->root
.type
== bfd_link_hash_indirect
)
6088 if (readonly_dynrelocs (h
))
6090 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
6092 /* Not an error, just cut short the traversal. */
6098 static const unsigned char glink_eh_frame_cie
[] =
6100 0, 0, 0, 16, /* length. */
6101 0, 0, 0, 0, /* id. */
6102 1, /* CIE version. */
6103 'z', 'R', 0, /* Augmentation string. */
6104 4, /* Code alignment. */
6105 0x7c, /* Data alignment. */
6107 1, /* Augmentation size. */
6108 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6109 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6112 /* Set the sizes of the dynamic sections. */
6115 ppc_elf_size_dynamic_sections (bfd
*output_bfd
,
6116 struct bfd_link_info
*info
)
6118 struct ppc_elf_link_hash_table
*htab
;
6124 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6127 htab
= ppc_elf_hash_table (info
);
6128 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6130 if (elf_hash_table (info
)->dynamic_sections_created
)
6132 /* Set the contents of the .interp section to the interpreter. */
6133 if (info
->executable
)
6135 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6136 BFD_ASSERT (s
!= NULL
);
6137 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6138 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6142 if (htab
->plt_type
== PLT_OLD
)
6143 htab
->got_header_size
= 16;
6144 else if (htab
->plt_type
== PLT_NEW
)
6145 htab
->got_header_size
= 12;
6147 /* Set up .got offsets for local syms, and space for local dynamic
6149 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
6151 bfd_signed_vma
*local_got
;
6152 bfd_signed_vma
*end_local_got
;
6153 struct plt_entry
**local_plt
;
6154 struct plt_entry
**end_local_plt
;
6156 bfd_size_type locsymcount
;
6157 Elf_Internal_Shdr
*symtab_hdr
;
6159 if (!is_ppc_elf (ibfd
))
6162 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6164 struct ppc_dyn_relocs
*p
;
6166 for (p
= ((struct ppc_dyn_relocs
*)
6167 elf_section_data (s
)->local_dynrel
);
6171 if (!bfd_is_abs_section (p
->sec
)
6172 && bfd_is_abs_section (p
->sec
->output_section
))
6174 /* Input section has been discarded, either because
6175 it is a copy of a linkonce section or due to
6176 linker script /DISCARD/, so we'll be discarding
6179 else if (htab
->is_vxworks
6180 && strcmp (p
->sec
->output_section
->name
,
6183 /* Relocations in vxworks .tls_vars sections are
6184 handled specially by the loader. */
6186 else if (p
->count
!= 0)
6188 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6190 sreloc
= htab
->reliplt
;
6191 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6192 if ((p
->sec
->output_section
->flags
6193 & (SEC_READONLY
| SEC_ALLOC
))
6194 == (SEC_READONLY
| SEC_ALLOC
))
6195 info
->flags
|= DF_TEXTREL
;
6200 local_got
= elf_local_got_refcounts (ibfd
);
6204 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6205 locsymcount
= symtab_hdr
->sh_info
;
6206 end_local_got
= local_got
+ locsymcount
;
6207 local_plt
= (struct plt_entry
**) end_local_got
;
6208 end_local_plt
= local_plt
+ locsymcount
;
6209 lgot_masks
= (char *) end_local_plt
;
6211 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6214 unsigned int need
= 0;
6215 if ((*lgot_masks
& TLS_TLS
) != 0)
6217 if ((*lgot_masks
& TLS_GD
) != 0)
6219 if ((*lgot_masks
& TLS_LD
) != 0)
6220 htab
->tlsld_got
.refcount
+= 1;
6221 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6223 if ((*lgot_masks
& TLS_DTPREL
) != 0)
6229 *local_got
= (bfd_vma
) -1;
6232 *local_got
= allocate_got (htab
, need
);
6235 asection
*srel
= htab
->relgot
;
6236 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6237 srel
= htab
->reliplt
;
6238 srel
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
6243 *local_got
= (bfd_vma
) -1;
6245 if (htab
->is_vxworks
)
6248 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6249 for (; local_plt
< end_local_plt
; ++local_plt
)
6251 struct plt_entry
*ent
;
6252 bfd_boolean doneone
= FALSE
;
6253 bfd_vma plt_offset
= 0, glink_offset
= 0;
6255 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6256 if (ent
->plt
.refcount
> 0)
6262 plt_offset
= s
->size
;
6265 ent
->plt
.offset
= plt_offset
;
6268 if (!doneone
|| info
->shared
)
6270 glink_offset
= s
->size
;
6271 s
->size
+= GLINK_ENTRY_SIZE
;
6273 ent
->glink_offset
= glink_offset
;
6277 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
6282 ent
->plt
.offset
= (bfd_vma
) -1;
6286 /* Allocate space for global sym dynamic relocs. */
6287 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6289 if (htab
->tlsld_got
.refcount
> 0)
6291 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6293 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
6296 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6298 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6300 unsigned int g_o_t
= 32768;
6302 /* If we haven't allocated the header, do so now. When we get here,
6303 for old plt/got the got size will be 0 to 32764 (not allocated),
6304 or 32780 to 65536 (header allocated). For new plt/got, the
6305 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6306 if (htab
->got
->size
<= 32768)
6308 g_o_t
= htab
->got
->size
;
6309 if (htab
->plt_type
== PLT_OLD
)
6311 htab
->got
->size
+= htab
->got_header_size
;
6314 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6318 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6320 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6321 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6323 if (info
->emitrelocations
)
6325 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6327 if (sda
!= NULL
&& sda
->ref_regular
)
6328 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6329 sda
= htab
->sdata
[1].sym
;
6330 if (sda
!= NULL
&& sda
->ref_regular
)
6331 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6334 if (htab
->glink
!= NULL
6335 && htab
->glink
->size
!= 0
6336 && htab
->elf
.dynamic_sections_created
)
6338 htab
->glink_pltresolve
= htab
->glink
->size
;
6339 /* Space for the branch table. */
6340 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
6341 /* Pad out to align the start of PLTresolve. */
6342 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6344 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6346 if (htab
->params
->emit_stub_syms
)
6348 struct elf_link_hash_entry
*sh
;
6349 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6350 TRUE
, FALSE
, FALSE
);
6353 if (sh
->root
.type
== bfd_link_hash_new
)
6355 sh
->root
.type
= bfd_link_hash_defined
;
6356 sh
->root
.u
.def
.section
= htab
->glink
;
6357 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6358 sh
->ref_regular
= 1;
6359 sh
->def_regular
= 1;
6360 sh
->ref_regular_nonweak
= 1;
6361 sh
->forced_local
= 1;
6364 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6365 TRUE
, FALSE
, FALSE
);
6368 if (sh
->root
.type
== bfd_link_hash_new
)
6370 sh
->root
.type
= bfd_link_hash_defined
;
6371 sh
->root
.u
.def
.section
= htab
->glink
;
6372 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6373 sh
->ref_regular
= 1;
6374 sh
->def_regular
= 1;
6375 sh
->ref_regular_nonweak
= 1;
6376 sh
->forced_local
= 1;
6382 if (htab
->glink
!= NULL
6383 && htab
->glink
->size
!= 0
6384 && htab
->glink_eh_frame
!= NULL
6385 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6386 && _bfd_elf_eh_frame_present (info
))
6388 s
= htab
->glink_eh_frame
;
6389 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6393 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6398 /* We've now determined the sizes of the various dynamic sections.
6399 Allocate memory for them. */
6401 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6403 bfd_boolean strip_section
= TRUE
;
6405 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6411 /* We'd like to strip these sections if they aren't needed, but if
6412 we've exported dynamic symbols from them we must leave them.
6413 It's too late to tell BFD to get rid of the symbols. */
6414 if (htab
->elf
.hplt
!= NULL
)
6415 strip_section
= FALSE
;
6416 /* Strip this section if we don't need it; see the
6419 else if (s
== htab
->iplt
6421 || s
== htab
->glink_eh_frame
6422 || s
== htab
->sgotplt
6424 || s
== htab
->dynbss
6425 || s
== htab
->dynsbss
)
6427 /* Strip these too. */
6429 else if (s
== htab
->sdata
[0].section
6430 || s
== htab
->sdata
[1].section
)
6432 strip_section
= (s
->flags
& SEC_KEEP
) == 0;
6434 else if (CONST_STRNEQ (bfd_get_section_name (htab
->elf
.dynobj
, s
),
6439 /* Remember whether there are any relocation sections. */
6442 /* We use the reloc_count field as a counter if we need
6443 to copy relocs into the output file. */
6449 /* It's not one of our sections, so don't allocate space. */
6453 if (s
->size
== 0 && strip_section
)
6455 /* If we don't need this section, strip it from the
6456 output file. This is mostly to handle .rela.bss and
6457 .rela.plt. We must create both sections in
6458 create_dynamic_sections, because they must be created
6459 before the linker maps input sections to output
6460 sections. The linker does that before
6461 adjust_dynamic_symbol is called, and it is that
6462 function which decides whether anything needs to go
6463 into these sections. */
6464 s
->flags
|= SEC_EXCLUDE
;
6468 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
6471 /* Allocate memory for the section contents. */
6472 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
6473 if (s
->contents
== NULL
)
6477 if (htab
->elf
.dynamic_sections_created
)
6479 /* Add some entries to the .dynamic section. We fill in the
6480 values later, in ppc_elf_finish_dynamic_sections, but we
6481 must add the entries now so that we get the correct size for
6482 the .dynamic section. The DT_DEBUG entry is filled in by the
6483 dynamic linker and used by the debugger. */
6484 #define add_dynamic_entry(TAG, VAL) \
6485 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6487 if (info
->executable
)
6489 if (!add_dynamic_entry (DT_DEBUG
, 0))
6493 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
6495 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6496 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6497 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6498 || !add_dynamic_entry (DT_JMPREL
, 0))
6502 if (htab
->plt_type
== PLT_NEW
6503 && htab
->glink
!= NULL
6504 && htab
->glink
->size
!= 0)
6506 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
6508 if (!htab
->params
->no_tls_get_addr_opt
6509 && htab
->tls_get_addr
!= NULL
6510 && htab
->tls_get_addr
->plt
.plist
!= NULL
6511 && !add_dynamic_entry (DT_PPC_OPT
, PPC_OPT_TLS
))
6517 if (!add_dynamic_entry (DT_RELA
, 0)
6518 || !add_dynamic_entry (DT_RELASZ
, 0)
6519 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
6523 /* If any dynamic relocs apply to a read-only section, then we
6524 need a DT_TEXTREL entry. */
6525 if ((info
->flags
& DF_TEXTREL
) == 0)
6526 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
6529 if ((info
->flags
& DF_TEXTREL
) != 0)
6531 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6534 if (htab
->is_vxworks
6535 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
6538 #undef add_dynamic_entry
6540 if (htab
->glink_eh_frame
!= NULL
6541 && htab
->glink_eh_frame
->contents
!= NULL
)
6543 unsigned char *p
= htab
->glink_eh_frame
->contents
;
6546 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
6547 /* CIE length (rewrite in case little-endian). */
6548 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
6549 p
+= sizeof (glink_eh_frame_cie
);
6551 val
= htab
->glink_eh_frame
->size
- 4 - sizeof (glink_eh_frame_cie
);
6552 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6555 val
= p
- htab
->glink_eh_frame
->contents
;
6556 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6558 /* Offset to .glink. Set later. */
6561 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
, p
);
6567 && htab
->elf
.dynamic_sections_created
)
6569 bfd_vma adv
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8) >> 2;
6571 *p
++ = DW_CFA_advance_loc
+ adv
;
6574 *p
++ = DW_CFA_advance_loc1
;
6577 else if (adv
< 65536)
6579 *p
++ = DW_CFA_advance_loc2
;
6580 bfd_put_16 (htab
->elf
.dynobj
, adv
, p
);
6585 *p
++ = DW_CFA_advance_loc4
;
6586 bfd_put_32 (htab
->elf
.dynobj
, adv
, p
);
6589 *p
++ = DW_CFA_register
;
6592 *p
++ = DW_CFA_advance_loc
+ 4;
6593 *p
++ = DW_CFA_restore_extended
;
6596 BFD_ASSERT ((bfd_vma
) ((p
+ 3 - htab
->glink_eh_frame
->contents
) & -4)
6597 == htab
->glink_eh_frame
->size
);
6603 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6604 if it looks like nothing is using them. */
6607 maybe_strip_sdasym (bfd
*output_bfd
, elf_linker_section_t
*lsect
)
6609 struct elf_link_hash_entry
*sda
= lsect
->sym
;
6611 if (sda
!= NULL
&& !sda
->ref_regular
&& sda
->dynindx
== -1)
6615 s
= bfd_get_section_by_name (output_bfd
, lsect
->name
);
6616 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6618 s
= bfd_get_section_by_name (output_bfd
, lsect
->bss_name
);
6619 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6621 sda
->def_regular
= 0;
6622 /* This is somewhat magic. See elf_link_output_extsym. */
6623 sda
->ref_dynamic
= 1;
6624 sda
->forced_local
= 0;
6631 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info
*info
)
6633 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6637 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[0]);
6638 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[1]);
6643 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6646 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6648 if (h
->plt
.plist
!= NULL
6650 && (!h
->pointer_equality_needed
6651 || !h
->ref_regular_nonweak
))
6654 return _bfd_elf_hash_symbol (h
);
6657 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6659 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6660 used for some functions that are allowed to break the ABI). */
6661 static const int shared_stub_entry
[] =
6663 0x7c0802a6, /* mflr 0 */
6664 0x429f0005, /* bcl 20, 31, .Lxxx */
6665 0x7d8802a6, /* mflr 12 */
6666 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6667 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6668 0x7c0803a6, /* mtlr 0 */
6669 0x7d8903a6, /* mtctr 12 */
6670 0x4e800420, /* bctr */
6673 static const int stub_entry
[] =
6675 0x3d800000, /* lis 12,xxx@ha */
6676 0x398c0000, /* addi 12,12,xxx@l */
6677 0x7d8903a6, /* mtctr 12 */
6678 0x4e800420, /* bctr */
6681 struct ppc_elf_relax_info
6683 unsigned int workaround_size
;
6686 /* This function implements long branch trampolines, and the ppc476
6687 icache bug workaround. Any section needing trampolines or patch
6688 space for the workaround has its size extended so that we can
6689 add trampolines at the end of the section. */
6692 ppc_elf_relax_section (bfd
*abfd
,
6694 struct bfd_link_info
*link_info
,
6699 struct one_fixup
*next
;
6701 /* Final link, can use the symbol offset. For a
6702 relocatable link we use the symbol's index. */
6707 Elf_Internal_Shdr
*symtab_hdr
;
6708 bfd_byte
*contents
= NULL
;
6709 Elf_Internal_Sym
*isymbuf
= NULL
;
6710 Elf_Internal_Rela
*internal_relocs
= NULL
;
6711 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6712 struct one_fixup
*fixups
= NULL
;
6713 struct ppc_elf_relax_info
*relax_info
= NULL
;
6714 unsigned changes
= 0;
6715 bfd_boolean workaround_change
;
6716 struct ppc_elf_link_hash_table
*htab
;
6717 bfd_size_type trampbase
, trampoff
, newsize
;
6719 bfd_boolean maybe_pasted
;
6723 /* No need to do anything with non-alloc or non-code sections. */
6724 if ((isec
->flags
& SEC_ALLOC
) == 0
6725 || (isec
->flags
& SEC_CODE
) == 0
6726 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6730 /* We cannot represent the required PIC relocs in the output, so don't
6731 do anything. The linker doesn't support mixing -shared and -r
6733 if (link_info
->relocatable
&& link_info
->shared
)
6736 htab
= ppc_elf_hash_table (link_info
);
6740 isec
->size
= (isec
->size
+ 3) & -4;
6741 if (isec
->rawsize
== 0)
6742 isec
->rawsize
= isec
->size
;
6743 trampbase
= isec
->size
;
6745 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6746 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6747 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6749 if (htab
->params
->ppc476_workaround
)
6751 if (elf_section_data (isec
)->sec_info
== NULL
)
6753 elf_section_data (isec
)->sec_info
6754 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
6755 if (elf_section_data (isec
)->sec_info
== NULL
)
6758 relax_info
= elf_section_data (isec
)->sec_info
;
6759 trampbase
-= relax_info
->workaround_size
;
6762 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6763 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6764 /* Space for a branch around any trampolines. */
6765 trampoff
= trampbase
;
6766 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
6769 symtab_hdr
= &elf_symtab_hdr (abfd
);
6771 if (htab
->params
->branch_trampolines
)
6773 /* Get a copy of the native relocations. */
6774 if (isec
->reloc_count
!= 0)
6776 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6777 link_info
->keep_memory
);
6778 if (internal_relocs
== NULL
)
6782 got2
= bfd_get_section_by_name (abfd
, ".got2");
6784 irelend
= internal_relocs
+ isec
->reloc_count
;
6785 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6787 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6790 struct one_fixup
*f
;
6791 size_t insn_offset
= 0;
6792 bfd_vma max_branch_offset
, val
;
6795 struct elf_link_hash_entry
*h
;
6796 struct plt_entry
**plist
;
6797 unsigned char sym_type
;
6802 case R_PPC_LOCAL24PC
:
6803 case R_PPC_PLTREL24
:
6804 max_branch_offset
= 1 << 25;
6808 case R_PPC_REL14_BRTAKEN
:
6809 case R_PPC_REL14_BRNTAKEN
:
6810 max_branch_offset
= 1 << 15;
6817 /* Get the value of the symbol referred to by the reloc. */
6819 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6821 /* A local symbol. */
6822 Elf_Internal_Sym
*isym
;
6824 /* Read this BFD's local symbols. */
6825 if (isymbuf
== NULL
)
6827 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6828 if (isymbuf
== NULL
)
6829 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
6830 symtab_hdr
->sh_info
, 0,
6835 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6836 if (isym
->st_shndx
== SHN_UNDEF
)
6837 tsec
= bfd_und_section_ptr
;
6838 else if (isym
->st_shndx
== SHN_ABS
)
6839 tsec
= bfd_abs_section_ptr
;
6840 else if (isym
->st_shndx
== SHN_COMMON
)
6841 tsec
= bfd_com_section_ptr
;
6843 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6845 toff
= isym
->st_value
;
6846 sym_type
= ELF_ST_TYPE (isym
->st_info
);
6850 /* Global symbol handling. */
6853 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6854 h
= elf_sym_hashes (abfd
)[indx
];
6856 while (h
->root
.type
== bfd_link_hash_indirect
6857 || h
->root
.type
== bfd_link_hash_warning
)
6858 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6860 if (h
->root
.type
== bfd_link_hash_defined
6861 || h
->root
.type
== bfd_link_hash_defweak
)
6863 tsec
= h
->root
.u
.def
.section
;
6864 toff
= h
->root
.u
.def
.value
;
6866 else if (h
->root
.type
== bfd_link_hash_undefined
6867 || h
->root
.type
== bfd_link_hash_undefweak
)
6869 tsec
= bfd_und_section_ptr
;
6870 toff
= link_info
->relocatable
? indx
: 0;
6875 /* If this branch is to __tls_get_addr then we may later
6876 optimise away the call. We won't be needing a long-
6877 branch stub in that case. */
6878 if (link_info
->executable
6879 && !link_info
->relocatable
6880 && h
== htab
->tls_get_addr
6881 && irel
!= internal_relocs
)
6883 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
6884 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
6885 unsigned int tls_mask
= 0;
6887 /* The previous reloc should be one of R_PPC_TLSGD or
6888 R_PPC_TLSLD, or for older object files, a reloc
6889 on the __tls_get_addr arg setup insn. Get tls
6890 mask bits from the symbol on that reloc. */
6891 if (t_symndx
< symtab_hdr
->sh_info
)
6893 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6895 if (local_got_offsets
!= NULL
)
6897 struct plt_entry
**local_plt
= (struct plt_entry
**)
6898 (local_got_offsets
+ symtab_hdr
->sh_info
);
6899 char *lgot_masks
= (char *)
6900 (local_plt
+ symtab_hdr
->sh_info
);
6901 tls_mask
= lgot_masks
[t_symndx
];
6906 struct elf_link_hash_entry
*th
6907 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
6909 while (th
->root
.type
== bfd_link_hash_indirect
6910 || th
->root
.type
== bfd_link_hash_warning
)
6911 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
6914 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
6917 /* The mask bits tell us if the call will be
6919 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
6920 && (t_rtype
== R_PPC_TLSGD
6921 || t_rtype
== R_PPC_GOT_TLSGD16
6922 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
6924 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
6925 && (t_rtype
== R_PPC_TLSLD
6926 || t_rtype
== R_PPC_GOT_TLSLD16
6927 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
6934 /* The condition here under which we call find_plt_ent must
6935 match that in relocate_section. If we call find_plt_ent here
6936 but not in relocate_section, or vice versa, then the branch
6937 destination used here may be incorrect. */
6941 /* We know is_branch_reloc (r_type) is true. */
6942 if (h
->type
== STT_GNU_IFUNC
6943 || r_type
== R_PPC_PLTREL24
)
6944 plist
= &h
->plt
.plist
;
6946 else if (sym_type
== STT_GNU_IFUNC
6947 && elf_local_got_offsets (abfd
) != NULL
)
6949 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6950 struct plt_entry
**local_plt
= (struct plt_entry
**)
6951 (local_got_offsets
+ symtab_hdr
->sh_info
);
6952 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
6957 struct plt_entry
*ent
;
6959 if (r_type
== R_PPC_PLTREL24
&& link_info
->shared
)
6960 addend
= irel
->r_addend
;
6961 ent
= find_plt_ent (plist
, got2
, addend
);
6964 if (htab
->plt_type
== PLT_NEW
6966 || !htab
->elf
.dynamic_sections_created
6967 || h
->dynindx
== -1)
6970 toff
= ent
->glink_offset
;
6975 toff
= ent
->plt
.offset
;
6980 /* If the branch and target are in the same section, you have
6981 no hope of adding stubs. We'll error out later should the
6986 /* There probably isn't any reason to handle symbols in
6987 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6988 attribute for a code section, and we are only looking at
6989 branches. However, implement it correctly here as a
6990 reference for other target relax_section functions. */
6991 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
6993 /* At this stage in linking, no SEC_MERGE symbol has been
6994 adjusted, so all references to such symbols need to be
6995 passed through _bfd_merged_section_offset. (Later, in
6996 relocate_section, all SEC_MERGE symbols *except* for
6997 section symbols have been adjusted.)
6999 gas may reduce relocations against symbols in SEC_MERGE
7000 sections to a relocation against the section symbol when
7001 the original addend was zero. When the reloc is against
7002 a section symbol we should include the addend in the
7003 offset passed to _bfd_merged_section_offset, since the
7004 location of interest is the original symbol. On the
7005 other hand, an access to "sym+addend" where "sym" is not
7006 a section symbol should not include the addend; Such an
7007 access is presumed to be an offset from "sym"; The
7008 location of interest is just "sym". */
7009 if (sym_type
== STT_SECTION
)
7010 toff
+= irel
->r_addend
;
7013 = _bfd_merged_section_offset (abfd
, &tsec
,
7014 elf_section_data (tsec
)->sec_info
,
7017 if (sym_type
!= STT_SECTION
)
7018 toff
+= irel
->r_addend
;
7020 /* PLTREL24 addends are special. */
7021 else if (r_type
!= R_PPC_PLTREL24
)
7022 toff
+= irel
->r_addend
;
7024 /* Attempted -shared link of non-pic code loses. */
7025 if ((!link_info
->relocatable
7026 && tsec
== bfd_und_section_ptr
)
7027 || tsec
->output_section
== NULL
7028 || (tsec
->owner
!= NULL
7029 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
7032 roff
= irel
->r_offset
;
7034 /* If the branch is in range, no need to do anything. */
7035 if (tsec
!= bfd_und_section_ptr
7036 && (!link_info
->relocatable
7037 /* A relocatable link may have sections moved during
7038 final link, so do not presume they remain in range. */
7039 || tsec
->output_section
== isec
->output_section
))
7041 bfd_vma symaddr
, reladdr
;
7043 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7044 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7045 if (symaddr
- reladdr
+ max_branch_offset
7046 < 2 * max_branch_offset
)
7050 /* Look for an existing fixup to this address. */
7051 for (f
= fixups
; f
; f
= f
->next
)
7052 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7058 unsigned long stub_rtype
;
7060 val
= trampoff
- roff
;
7061 if (val
>= max_branch_offset
)
7062 /* Oh dear, we can't reach a trampoline. Don't try to add
7063 one. We'll report an error later. */
7066 if (link_info
->shared
)
7068 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7073 size
= 4 * ARRAY_SIZE (stub_entry
);
7076 stub_rtype
= R_PPC_RELAX
;
7077 if (tsec
== htab
->plt
7078 || tsec
== htab
->glink
)
7080 stub_rtype
= R_PPC_RELAX_PLT
;
7081 if (r_type
== R_PPC_PLTREL24
)
7082 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7085 /* Hijack the old relocation. Since we need two
7086 relocations for this use a "composite" reloc. */
7087 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7089 irel
->r_offset
= trampoff
+ insn_offset
;
7090 if (r_type
== R_PPC_PLTREL24
7091 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7094 /* Record the fixup so we don't do it again this section. */
7095 f
= bfd_malloc (sizeof (*f
));
7099 f
->trampoff
= trampoff
;
7107 val
= f
->trampoff
- roff
;
7108 if (val
>= max_branch_offset
)
7111 /* Nop out the reloc, since we're finalizing things here. */
7112 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7115 /* Get the section contents. */
7116 if (contents
== NULL
)
7118 /* Get cached copy if it exists. */
7119 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7120 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7121 /* Go get them off disk. */
7122 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7126 /* Fix up the existing branch to hit the trampoline. */
7127 hit_addr
= contents
+ roff
;
7131 case R_PPC_LOCAL24PC
:
7132 case R_PPC_PLTREL24
:
7133 t0
= bfd_get_32 (abfd
, hit_addr
);
7135 t0
|= val
& 0x3fffffc;
7136 bfd_put_32 (abfd
, t0
, hit_addr
);
7140 case R_PPC_REL14_BRTAKEN
:
7141 case R_PPC_REL14_BRNTAKEN
:
7142 t0
= bfd_get_32 (abfd
, hit_addr
);
7145 bfd_put_32 (abfd
, t0
, hit_addr
);
7150 while (fixups
!= NULL
)
7152 struct one_fixup
*f
= fixups
;
7153 fixups
= fixups
->next
;
7158 workaround_change
= FALSE
;
7160 if (htab
->params
->ppc476_workaround
7161 && (!link_info
->relocatable
7162 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7164 bfd_vma addr
, end_addr
;
7165 unsigned int crossings
;
7166 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7168 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7169 end_addr
= addr
+ trampoff
;
7171 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7174 /* Keep space aligned, to ensure the patch code itself does
7175 not cross a page. Don't decrease size calculated on a
7176 previous pass as otherwise we might never settle on a layout. */
7177 newsize
= 15 - ((end_addr
- 1) & 15);
7178 newsize
+= crossings
* 16;
7179 if (relax_info
->workaround_size
< newsize
)
7181 relax_info
->workaround_size
= newsize
;
7182 workaround_change
= TRUE
;
7184 /* Ensure relocate_section is called. */
7185 isec
->flags
|= SEC_RELOC
;
7187 newsize
= trampoff
+ relax_info
->workaround_size
;
7190 if (changes
|| workaround_change
)
7191 isec
->size
= newsize
;
7194 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7196 if (! link_info
->keep_memory
)
7200 /* Cache the symbols for elf_link_input_bfd. */
7201 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7205 if (contents
!= NULL
7206 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7208 if (!changes
&& !link_info
->keep_memory
)
7212 /* Cache the section contents for elf_link_input_bfd. */
7213 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7219 /* Append sufficient NOP relocs so we can write out relocation
7220 information for the trampolines. */
7221 Elf_Internal_Shdr
*rel_hdr
;
7222 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7223 * sizeof (*new_relocs
));
7228 memcpy (new_relocs
, internal_relocs
,
7229 isec
->reloc_count
* sizeof (*new_relocs
));
7230 for (ix
= changes
; ix
--;)
7232 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7234 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7236 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7237 free (internal_relocs
);
7238 elf_section_data (isec
)->relocs
= new_relocs
;
7239 isec
->reloc_count
+= changes
;
7240 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7241 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7243 else if (internal_relocs
!= NULL
7244 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7245 free (internal_relocs
);
7247 *again
= changes
!= 0 || workaround_change
;
7251 while (fixups
!= NULL
)
7253 struct one_fixup
*f
= fixups
;
7254 fixups
= fixups
->next
;
7257 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7259 if (contents
!= NULL
7260 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7262 if (internal_relocs
!= NULL
7263 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7264 free (internal_relocs
);
7268 /* What to do when ld finds relocations against symbols defined in
7269 discarded sections. */
7272 ppc_elf_action_discarded (asection
*sec
)
7274 if (strcmp (".fixup", sec
->name
) == 0)
7277 if (strcmp (".got2", sec
->name
) == 0)
7280 return _bfd_elf_default_action_discarded (sec
);
7283 /* Fill in the address for a pointer generated in a linker section. */
7286 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7287 elf_linker_section_t
*lsect
,
7288 struct elf_link_hash_entry
*h
,
7290 const Elf_Internal_Rela
*rel
)
7292 elf_linker_section_pointers_t
*linker_section_ptr
;
7294 BFD_ASSERT (lsect
!= NULL
);
7298 /* Handle global symbol. */
7299 struct ppc_elf_link_hash_entry
*eh
;
7301 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7302 BFD_ASSERT (eh
->elf
.def_regular
);
7303 linker_section_ptr
= eh
->linker_section_pointer
;
7307 /* Handle local symbol. */
7308 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7310 BFD_ASSERT (is_ppc_elf (input_bfd
));
7311 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7312 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7315 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7318 BFD_ASSERT (linker_section_ptr
!= NULL
);
7320 /* Offset will always be a multiple of four, so use the bottom bit
7321 as a "written" flag. */
7322 if ((linker_section_ptr
->offset
& 1) == 0)
7324 bfd_put_32 (lsect
->section
->owner
,
7325 relocation
+ linker_section_ptr
->addend
,
7326 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7327 linker_section_ptr
->offset
+= 1;
7330 relocation
= (lsect
->section
->output_section
->vma
7331 + lsect
->section
->output_offset
7332 + linker_section_ptr
->offset
- 1
7333 - SYM_VAL (lsect
->sym
));
7337 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7338 lsect
->name
, (long) relocation
, (long) relocation
);
7344 #define PPC_LO(v) ((v) & 0xffff)
7345 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7346 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7349 write_glink_stub (struct plt_entry
*ent
, asection
*plt_sec
, unsigned char *p
,
7350 struct bfd_link_info
*info
)
7352 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7353 bfd
*output_bfd
= info
->output_bfd
;
7356 plt
= ((ent
->plt
.offset
& ~1)
7357 + plt_sec
->output_section
->vma
7358 + plt_sec
->output_offset
);
7364 if (ent
->addend
>= 32768)
7366 + ent
->sec
->output_section
->vma
7367 + ent
->sec
->output_offset
);
7368 else if (htab
->elf
.hgot
!= NULL
)
7369 got
= SYM_VAL (htab
->elf
.hgot
);
7373 if (plt
+ 0x8000 < 0x10000)
7375 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7377 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7379 bfd_put_32 (output_bfd
, BCTR
, p
);
7381 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7386 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7388 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7390 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7392 bfd_put_32 (output_bfd
, BCTR
, p
);
7398 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7400 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7402 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7404 bfd_put_32 (output_bfd
, BCTR
, p
);
7409 /* Return true if symbol is defined statically. */
7412 is_static_defined (struct elf_link_hash_entry
*h
)
7414 return ((h
->root
.type
== bfd_link_hash_defined
7415 || h
->root
.type
== bfd_link_hash_defweak
)
7416 && h
->root
.u
.def
.section
!= NULL
7417 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7420 /* If INSN is an opcode that may be used with an @tls operand, return
7421 the transformed insn for TLS optimisation, otherwise return 0. If
7422 REG is non-zero only match an insn with RB or RA equal to REG. */
7425 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7429 if ((insn
& (0x3f << 26)) != 31 << 26)
7432 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7433 rtra
= insn
& ((1 << 26) - (1 << 16));
7434 else if (((insn
>> 16) & 0x1f) == reg
)
7435 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7439 if ((insn
& (0x3ff << 1)) == 266 << 1)
7442 else if ((insn
& (0x1f << 1)) == 23 << 1
7443 && ((insn
& (0x1f << 6)) < 14 << 6
7444 || ((insn
& (0x1f << 6)) >= 16 << 6
7445 && (insn
& (0x1f << 6)) < 24 << 6)))
7446 /* load and store indexed -> dform. */
7447 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7448 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7449 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7450 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7451 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7453 insn
= (58 << 26) | 2;
7460 /* If INSN is an opcode that may be used with an @tprel operand, return
7461 the transformed insn for an undefined weak symbol, ie. with the
7462 thread pointer REG operand removed. Otherwise return 0. */
7465 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7467 if ((insn
& (0x1f << 16)) == reg
<< 16
7468 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7469 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7470 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7471 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7472 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7473 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7474 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7475 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7476 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7477 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7478 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7479 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7480 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7481 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7482 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7483 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7485 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7486 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7488 insn
&= ~(0x1f << 16);
7490 else if ((insn
& (0x1f << 21)) == reg
<< 21
7491 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7492 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7493 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7495 insn
&= ~(0x1f << 21);
7496 insn
|= (insn
& (0x1f << 16)) << 5;
7497 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7498 insn
-= 2 >> 26; /* convert to ori,oris */
7506 is_insn_ds_form (unsigned int insn
)
7508 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7509 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7510 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7511 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7515 is_insn_dq_form (unsigned int insn
)
7517 return (insn
& (0x3f << 26)) == 56u << 26; /* lq */
7520 /* The RELOCATE_SECTION function is called by the ELF backend linker
7521 to handle the relocations for a section.
7523 The relocs are always passed as Rela structures; if the section
7524 actually uses Rel structures, the r_addend field will always be
7527 This function is responsible for adjust the section contents as
7528 necessary, and (if using Rela relocs and generating a
7529 relocatable output file) adjusting the reloc addend as
7532 This function does not have to worry about setting the reloc
7533 address or the reloc symbol index.
7535 LOCAL_SYMS is a pointer to the swapped in local symbols.
7537 LOCAL_SECTIONS is an array giving the section in the input file
7538 corresponding to the st_shndx field of each local symbol.
7540 The global hash table entry for the global symbols can be found
7541 via elf_sym_hashes (input_bfd).
7543 When generating relocatable output, this function must handle
7544 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7545 going to be the section symbol corresponding to the output
7546 section, which means that the addend must be adjusted
7550 ppc_elf_relocate_section (bfd
*output_bfd
,
7551 struct bfd_link_info
*info
,
7553 asection
*input_section
,
7555 Elf_Internal_Rela
*relocs
,
7556 Elf_Internal_Sym
*local_syms
,
7557 asection
**local_sections
)
7559 Elf_Internal_Shdr
*symtab_hdr
;
7560 struct elf_link_hash_entry
**sym_hashes
;
7561 struct ppc_elf_link_hash_table
*htab
;
7562 Elf_Internal_Rela
*rel
;
7563 Elf_Internal_Rela
*relend
;
7564 Elf_Internal_Rela outrel
;
7566 bfd_vma
*local_got_offsets
;
7567 bfd_boolean ret
= TRUE
;
7568 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
7569 bfd_boolean is_vxworks_tls
;
7572 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7573 "%ld relocations%s",
7574 input_bfd
, input_section
,
7575 (long) input_section
->reloc_count
,
7576 (info
->relocatable
) ? " (relocatable)" : "");
7579 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7581 /* Initialize howto table if not already done. */
7582 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7583 ppc_elf_howto_init ();
7585 htab
= ppc_elf_hash_table (info
);
7586 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7587 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7588 sym_hashes
= elf_sym_hashes (input_bfd
);
7589 /* We have to handle relocations in vxworks .tls_vars sections
7590 specially, because the dynamic loader is 'weird'. */
7591 is_vxworks_tls
= (htab
->is_vxworks
&& info
->shared
7592 && !strcmp (input_section
->output_section
->name
,
7595 relend
= relocs
+ input_section
->reloc_count
;
7596 for (; rel
< relend
; rel
++)
7598 enum elf_ppc_reloc_type r_type
;
7600 bfd_reloc_status_type r
;
7601 Elf_Internal_Sym
*sym
;
7603 struct elf_link_hash_entry
*h
;
7604 const char *sym_name
;
7605 reloc_howto_type
*howto
;
7606 unsigned long r_symndx
;
7608 bfd_vma branch_bit
, from
;
7609 bfd_boolean unresolved_reloc
;
7611 unsigned int tls_type
, tls_mask
, tls_gd
;
7612 struct plt_entry
**ifunc
;
7613 struct reloc_howto_struct alt_howto
;
7615 r_type
= ELF32_R_TYPE (rel
->r_info
);
7619 unresolved_reloc
= FALSE
;
7621 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7623 if (r_symndx
< symtab_hdr
->sh_info
)
7625 sym
= local_syms
+ r_symndx
;
7626 sec
= local_sections
[r_symndx
];
7627 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7629 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7633 bfd_boolean ignored
;
7635 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7636 r_symndx
, symtab_hdr
, sym_hashes
,
7638 unresolved_reloc
, warned
, ignored
);
7640 sym_name
= h
->root
.root
.string
;
7643 if (sec
!= NULL
&& discarded_section (sec
))
7645 /* For relocs against symbols from removed linkonce sections,
7646 or sections discarded by a linker script, we just want the
7647 section contents zeroed. Avoid any special processing. */
7649 if (r_type
< R_PPC_max
)
7650 howto
= ppc_elf_howto_table
[r_type
];
7651 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
7652 rel
, 1, relend
, howto
, 0, contents
);
7655 if (info
->relocatable
)
7658 && r_type
== R_PPC_PLTREL24
7659 && rel
->r_addend
!= 0)
7661 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7662 addend specifies the GOT pointer offset within .got2. */
7663 rel
->r_addend
+= got2
->output_offset
;
7665 if (r_type
!= R_PPC_RELAX_PLT
7666 && r_type
!= R_PPC_RELAX_PLTREL24
7667 && r_type
!= R_PPC_RELAX
)
7671 /* TLS optimizations. Replace instruction sequences and relocs
7672 based on information we collected in tls_optimize. We edit
7673 RELOCS so that --emit-relocs will output something sensible
7674 for the final instruction stream. */
7678 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7679 else if (local_got_offsets
!= NULL
)
7681 struct plt_entry
**local_plt
;
7684 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7685 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7686 tls_mask
= lgot_masks
[r_symndx
];
7689 /* Ensure reloc mapping code below stays sane. */
7690 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7691 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7692 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7693 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7694 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7695 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7696 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7697 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
7704 case R_PPC_GOT_TPREL16
:
7705 case R_PPC_GOT_TPREL16_LO
:
7706 if ((tls_mask
& TLS_TLS
) != 0
7707 && (tls_mask
& TLS_TPREL
) == 0)
7711 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
7713 insn
|= 0x3c020000; /* addis 0,2,0 */
7714 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
7715 r_type
= R_PPC_TPREL16_HA
;
7716 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7721 if ((tls_mask
& TLS_TLS
) != 0
7722 && (tls_mask
& TLS_TPREL
) == 0)
7726 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7727 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
7730 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7731 r_type
= R_PPC_TPREL16_LO
;
7732 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7734 /* Was PPC_TLS which sits on insn boundary, now
7735 PPC_TPREL16_LO which is at low-order half-word. */
7736 rel
->r_offset
+= d_offset
;
7740 case R_PPC_GOT_TLSGD16_HI
:
7741 case R_PPC_GOT_TLSGD16_HA
:
7742 tls_gd
= TLS_TPRELGD
;
7743 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7747 case R_PPC_GOT_TLSLD16_HI
:
7748 case R_PPC_GOT_TLSLD16_HA
:
7749 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7752 if ((tls_mask
& tls_gd
) != 0)
7753 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7754 + R_PPC_GOT_TPREL16
);
7757 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
7758 rel
->r_offset
-= d_offset
;
7759 r_type
= R_PPC_NONE
;
7761 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7765 case R_PPC_GOT_TLSGD16
:
7766 case R_PPC_GOT_TLSGD16_LO
:
7767 tls_gd
= TLS_TPRELGD
;
7768 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7772 case R_PPC_GOT_TLSLD16
:
7773 case R_PPC_GOT_TLSLD16_LO
:
7774 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7776 unsigned int insn1
, insn2
;
7780 offset
= (bfd_vma
) -1;
7781 /* If not using the newer R_PPC_TLSGD/LD to mark
7782 __tls_get_addr calls, we must trust that the call
7783 stays with its arg setup insns, ie. that the next
7784 reloc is the __tls_get_addr call associated with
7785 the current reloc. Edit both insns. */
7786 if (input_section
->has_tls_get_addr_call
7788 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
7789 htab
->tls_get_addr
))
7790 offset
= rel
[1].r_offset
;
7791 if ((tls_mask
& tls_gd
) != 0)
7794 insn1
= bfd_get_32 (output_bfd
,
7795 contents
+ rel
->r_offset
- d_offset
);
7796 insn1
&= (1 << 26) - 1;
7797 insn1
|= 32 << 26; /* lwz */
7798 if (offset
!= (bfd_vma
) -1)
7800 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7801 insn2
= 0x7c631214; /* add 3,3,2 */
7802 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7804 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7805 + R_PPC_GOT_TPREL16
);
7806 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7811 insn1
= 0x3c620000; /* addis 3,2,0 */
7814 /* Was an LD reloc. */
7816 r_symndx
< symtab_hdr
->sh_info
;
7818 if (local_sections
[r_symndx
] == sec
)
7820 if (r_symndx
>= symtab_hdr
->sh_info
)
7821 r_symndx
= STN_UNDEF
;
7822 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7823 if (r_symndx
!= STN_UNDEF
)
7824 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7825 + sec
->output_offset
7826 + sec
->output_section
->vma
);
7828 r_type
= R_PPC_TPREL16_HA
;
7829 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7830 if (offset
!= (bfd_vma
) -1)
7832 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7833 rel
[1].r_offset
= offset
+ d_offset
;
7834 rel
[1].r_addend
= rel
->r_addend
;
7835 insn2
= 0x38630000; /* addi 3,3,0 */
7836 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7839 bfd_put_32 (output_bfd
, insn1
,
7840 contents
+ rel
->r_offset
- d_offset
);
7843 /* We changed the symbol on an LD reloc. Start over
7844 in order to get h, sym, sec etc. right. */
7852 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7855 bfd_vma offset
= rel
->r_offset
;
7857 if ((tls_mask
& TLS_TPRELGD
) != 0)
7860 r_type
= R_PPC_NONE
;
7861 insn2
= 0x7c631214; /* add 3,3,2 */
7866 r_type
= R_PPC_TPREL16_LO
;
7867 rel
->r_offset
+= d_offset
;
7868 insn2
= 0x38630000; /* addi 3,3,0 */
7870 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7871 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7872 /* Zap the reloc on the _tls_get_addr call too. */
7873 BFD_ASSERT (offset
== rel
[1].r_offset
);
7874 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7879 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7884 r_symndx
< symtab_hdr
->sh_info
;
7886 if (local_sections
[r_symndx
] == sec
)
7888 if (r_symndx
>= symtab_hdr
->sh_info
)
7889 r_symndx
= STN_UNDEF
;
7890 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7891 if (r_symndx
!= STN_UNDEF
)
7892 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7893 + sec
->output_offset
7894 + sec
->output_section
->vma
);
7896 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7897 rel
->r_offset
+= d_offset
;
7898 insn2
= 0x38630000; /* addi 3,3,0 */
7899 bfd_put_32 (output_bfd
, insn2
,
7900 contents
+ rel
->r_offset
- d_offset
);
7901 /* Zap the reloc on the _tls_get_addr call too. */
7902 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
7903 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7910 /* Handle other relocations that tweak non-addend part of insn. */
7917 /* Branch taken prediction relocations. */
7918 case R_PPC_ADDR14_BRTAKEN
:
7919 case R_PPC_REL14_BRTAKEN
:
7920 branch_bit
= BRANCH_PREDICT_BIT
;
7923 /* Branch not taken prediction relocations. */
7924 case R_PPC_ADDR14_BRNTAKEN
:
7925 case R_PPC_REL14_BRNTAKEN
:
7929 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7930 insn
&= ~BRANCH_PREDICT_BIT
;
7933 from
= (rel
->r_offset
7934 + input_section
->output_offset
7935 + input_section
->output_section
->vma
);
7937 /* Invert 'y' bit if not the default. */
7938 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
7939 insn
^= BRANCH_PREDICT_BIT
;
7941 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7947 if (!htab
->is_vxworks
)
7949 struct plt_entry
*ent
;
7953 if (h
->type
== STT_GNU_IFUNC
)
7954 ifunc
= &h
->plt
.plist
;
7956 else if (local_got_offsets
!= NULL
7957 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
7959 struct plt_entry
**local_plt
;
7961 local_plt
= (struct plt_entry
**) (local_got_offsets
7962 + symtab_hdr
->sh_info
);
7963 ifunc
= local_plt
+ r_symndx
;
7969 || is_branch_reloc (r_type
)))
7972 if (r_type
== R_PPC_PLTREL24
&& info
->shared
)
7973 addend
= rel
->r_addend
;
7974 ent
= find_plt_ent (ifunc
, got2
, addend
);
7978 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
7980 Elf_Internal_Rela rela
;
7983 rela
.r_offset
= (htab
->iplt
->output_section
->vma
7984 + htab
->iplt
->output_offset
7986 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
7987 rela
.r_addend
= relocation
;
7988 loc
= htab
->reliplt
->contents
;
7989 loc
+= (htab
->reliplt
->reloc_count
++
7990 * sizeof (Elf32_External_Rela
));
7991 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
7993 ent
->plt
.offset
|= 1;
7995 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
7997 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
7998 + ent
->glink_offset
);
7999 write_glink_stub (ent
, htab
->iplt
, p
, info
);
8000 ent
->glink_offset
|= 1;
8003 unresolved_reloc
= FALSE
;
8004 if (htab
->plt_type
== PLT_NEW
8005 || !htab
->elf
.dynamic_sections_created
8007 || h
->dynindx
== -1)
8008 relocation
= (htab
->glink
->output_section
->vma
8009 + htab
->glink
->output_offset
8010 + (ent
->glink_offset
& ~1));
8012 relocation
= (htab
->plt
->output_section
->vma
8013 + htab
->plt
->output_offset
8018 addend
= rel
->r_addend
;
8021 if (r_type
< R_PPC_max
)
8022 howto
= ppc_elf_howto_table
[r_type
];
8026 info
->callbacks
->einfo
8027 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8028 input_bfd
, (int) r_type
, sym_name
);
8030 bfd_set_error (bfd_error_bad_value
);
8038 case R_PPC_EMB_MRKREF
:
8039 case R_PPC_GNU_VTINHERIT
:
8040 case R_PPC_GNU_VTENTRY
:
8043 /* GOT16 relocations. Like an ADDR16 using the symbol's
8044 address in the GOT as relocation value instead of the
8045 symbol's value itself. Also, create a GOT entry for the
8046 symbol and put the symbol value there. */
8047 case R_PPC_GOT_TLSGD16
:
8048 case R_PPC_GOT_TLSGD16_LO
:
8049 case R_PPC_GOT_TLSGD16_HI
:
8050 case R_PPC_GOT_TLSGD16_HA
:
8051 tls_type
= TLS_TLS
| TLS_GD
;
8054 case R_PPC_GOT_TLSLD16
:
8055 case R_PPC_GOT_TLSLD16_LO
:
8056 case R_PPC_GOT_TLSLD16_HI
:
8057 case R_PPC_GOT_TLSLD16_HA
:
8058 tls_type
= TLS_TLS
| TLS_LD
;
8061 case R_PPC_GOT_TPREL16
:
8062 case R_PPC_GOT_TPREL16_LO
:
8063 case R_PPC_GOT_TPREL16_HI
:
8064 case R_PPC_GOT_TPREL16_HA
:
8065 tls_type
= TLS_TLS
| TLS_TPREL
;
8068 case R_PPC_GOT_DTPREL16
:
8069 case R_PPC_GOT_DTPREL16_LO
:
8070 case R_PPC_GOT_DTPREL16_HI
:
8071 case R_PPC_GOT_DTPREL16_HA
:
8072 tls_type
= TLS_TLS
| TLS_DTPREL
;
8076 case R_PPC_GOT16_LO
:
8077 case R_PPC_GOT16_HI
:
8078 case R_PPC_GOT16_HA
:
8082 /* Relocation is to the entry for this symbol in the global
8088 if (htab
->got
== NULL
)
8092 if (tls_type
== (TLS_TLS
| TLS_LD
)
8094 || !h
->def_dynamic
))
8095 offp
= &htab
->tlsld_got
.offset
;
8099 dyn
= htab
->elf
.dynamic_sections_created
;
8100 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
8102 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
8103 /* This is actually a static link, or it is a
8104 -Bsymbolic link and the symbol is defined
8105 locally, or the symbol was forced to be local
8106 because of a version file. */
8110 BFD_ASSERT (h
->dynindx
!= -1);
8112 unresolved_reloc
= FALSE
;
8114 offp
= &h
->got
.offset
;
8118 if (local_got_offsets
== NULL
)
8120 offp
= &local_got_offsets
[r_symndx
];
8123 /* The offset must always be a multiple of 4. We use the
8124 least significant bit to record whether we have already
8125 processed this entry. */
8131 unsigned int tls_m
= (tls_mask
8132 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8133 | TLS_TPREL
| TLS_TPRELGD
));
8135 if (offp
== &htab
->tlsld_got
.offset
)
8141 /* We might have multiple got entries for this sym.
8142 Initialize them all. */
8147 if ((tls_m
& TLS_LD
) != 0)
8149 tls_ty
= TLS_TLS
| TLS_LD
;
8152 else if ((tls_m
& TLS_GD
) != 0)
8154 tls_ty
= TLS_TLS
| TLS_GD
;
8157 else if ((tls_m
& TLS_DTPREL
) != 0)
8159 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8160 tls_m
&= ~TLS_DTPREL
;
8162 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8164 tls_ty
= TLS_TLS
| TLS_TPREL
;
8168 /* Generate relocs for the dynamic linker. */
8169 if ((info
->shared
|| indx
!= 0)
8170 && (offp
== &htab
->tlsld_got
.offset
8172 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8173 || h
->root
.type
!= bfd_link_hash_undefweak
))
8175 asection
*rsec
= htab
->relgot
;
8179 rsec
= htab
->reliplt
;
8180 outrel
.r_offset
= (htab
->got
->output_section
->vma
8181 + htab
->got
->output_offset
8183 outrel
.r_addend
= 0;
8184 if (tls_ty
& (TLS_LD
| TLS_GD
))
8186 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8187 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8189 loc
= rsec
->contents
;
8190 loc
+= (rsec
->reloc_count
++
8191 * sizeof (Elf32_External_Rela
));
8192 bfd_elf32_swap_reloca_out (output_bfd
,
8194 outrel
.r_offset
+= 4;
8196 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8199 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8200 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8201 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8202 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8204 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8205 else if (ifunc
!= NULL
)
8206 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8208 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8209 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8211 outrel
.r_addend
+= relocation
;
8212 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8213 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8215 loc
= rsec
->contents
;
8216 loc
+= (rsec
->reloc_count
++
8217 * sizeof (Elf32_External_Rela
));
8218 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8221 /* Init the .got section contents if we're not
8222 emitting a reloc. */
8225 bfd_vma value
= relocation
;
8227 if (tls_ty
== (TLS_TLS
| TLS_LD
))
8229 else if (tls_ty
!= 0)
8231 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8232 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8233 value
+= DTP_OFFSET
- TP_OFFSET
;
8235 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8237 bfd_put_32 (output_bfd
, value
,
8238 htab
->got
->contents
+ off
+ 4);
8242 bfd_put_32 (output_bfd
, value
,
8243 htab
->got
->contents
+ off
);
8247 if (tls_ty
& (TLS_LD
| TLS_GD
))
8256 if (off
>= (bfd_vma
) -2)
8259 if ((tls_type
& TLS_TLS
) != 0)
8261 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8263 if ((tls_mask
& TLS_LD
) != 0
8265 || !h
->def_dynamic
))
8267 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8269 if ((tls_mask
& TLS_GD
) != 0)
8271 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8273 if ((tls_mask
& TLS_DTPREL
) != 0)
8280 relocation
= (htab
->got
->output_section
->vma
8281 + htab
->got
->output_offset
8283 - SYM_VAL (htab
->elf
.hgot
));
8285 /* Addends on got relocations don't make much sense.
8286 x+off@got is actually x@got+off, and since the got is
8287 generated by a hash table traversal, the value in the
8288 got at entry m+n bears little relation to the entry m. */
8290 info
->callbacks
->einfo
8291 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8292 input_bfd
, input_section
, rel
->r_offset
,
8298 /* Relocations that need no special processing. */
8299 case R_PPC_LOCAL24PC
:
8300 /* It makes no sense to point a local relocation
8301 at a symbol not in this object. */
8302 if (unresolved_reloc
)
8304 if (! (*info
->callbacks
->undefined_symbol
) (info
,
8305 h
->root
.root
.string
,
8315 case R_PPC_DTPREL16
:
8316 case R_PPC_DTPREL16_LO
:
8317 case R_PPC_DTPREL16_HI
:
8318 case R_PPC_DTPREL16_HA
:
8319 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8322 /* Relocations that may need to be propagated if this is a shared
8325 case R_PPC_TPREL16_LO
:
8326 case R_PPC_TPREL16_HI
:
8327 case R_PPC_TPREL16_HA
:
8329 && h
->root
.type
== bfd_link_hash_undefweak
8330 && h
->dynindx
== -1)
8332 /* Make this relocation against an undefined weak symbol
8333 resolve to zero. This is really just a tweak, since
8334 code using weak externs ought to check that they are
8335 defined before using them. */
8336 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8337 unsigned int insn
= bfd_get_32 (output_bfd
, p
);
8338 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8340 bfd_put_32 (output_bfd
, insn
, p
);
8343 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8344 /* The TPREL16 relocs shouldn't really be used in shared
8345 libs as they will result in DT_TEXTREL being set, but
8346 support them anyway. */
8350 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8353 case R_PPC_DTPREL32
:
8354 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8357 case R_PPC_DTPMOD32
:
8363 case R_PPC_REL16_LO
:
8364 case R_PPC_REL16_HI
:
8365 case R_PPC_REL16_HA
:
8369 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8375 case R_PPC_ADDR16_LO
:
8376 case R_PPC_ADDR16_HI
:
8377 case R_PPC_ADDR16_HA
:
8382 case R_PPC_VLE_REL8
:
8383 case R_PPC_VLE_REL15
:
8384 case R_PPC_VLE_REL24
:
8387 case R_PPC_REL14_BRTAKEN
:
8388 case R_PPC_REL14_BRNTAKEN
:
8389 /* If these relocations are not to a named symbol, they can be
8390 handled right here, no need to bother the dynamic linker. */
8391 if (SYMBOL_CALLS_LOCAL (info
, h
)
8392 || h
== htab
->elf
.hgot
)
8398 case R_PPC_ADDR14_BRTAKEN
:
8399 case R_PPC_ADDR14_BRNTAKEN
:
8400 if (h
!= NULL
&& !info
->shared
)
8405 if ((input_section
->flags
& SEC_ALLOC
) == 0
8411 && ((h
->root
.type
== bfd_link_hash_undefined
8412 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
8413 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
8414 || (h
->root
.type
== bfd_link_hash_undefweak
8415 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)))
8416 && (must_be_dyn_reloc (info
, r_type
)
8417 || !SYMBOL_CALLS_LOCAL (info
, h
)))
8418 || (ELIMINATE_COPY_RELOCS
8423 && !h
->def_regular
))
8429 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8430 "create relocation for %s\n",
8431 (h
&& h
->root
.root
.string
8432 ? h
->root
.root
.string
: "<unknown>"));
8435 /* When generating a shared object, these relocations
8436 are copied into the output file to be resolved at run
8438 sreloc
= elf_section_data (input_section
)->sreloc
;
8440 sreloc
= htab
->reliplt
;
8445 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8448 if (outrel
.r_offset
== (bfd_vma
) -1
8449 || outrel
.r_offset
== (bfd_vma
) -2)
8450 skip
= (int) outrel
.r_offset
;
8451 outrel
.r_offset
+= (input_section
->output_section
->vma
8452 + input_section
->output_offset
);
8455 memset (&outrel
, 0, sizeof outrel
);
8457 && (h
->root
.type
== bfd_link_hash_undefined
8458 || h
->root
.type
== bfd_link_hash_undefweak
))
8459 || !SYMBOL_REFERENCES_LOCAL (info
, h
))
8461 BFD_ASSERT (h
->dynindx
!= -1);
8462 unresolved_reloc
= FALSE
;
8463 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
8464 outrel
.r_addend
= rel
->r_addend
;
8468 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8470 if (r_type
!= R_PPC_ADDR32
)
8476 /* If we get here when building a static
8477 executable, then the libc startup function
8478 responsible for applying indirect function
8479 relocations is going to complain about
8481 If we get here when building a dynamic
8482 executable, it will be because we have
8483 a text relocation. The dynamic loader
8484 will set the text segment writable and
8485 non-executable to apply text relocations.
8486 So we'll segfault when trying to run the
8487 indirection function to resolve the reloc. */
8488 info
->callbacks
->einfo
8489 (_("%P: %H: relocation %s for indirect "
8490 "function %s unsupported\n"),
8491 input_bfd
, input_section
, rel
->r_offset
,
8496 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8498 else if (sec
== NULL
|| sec
->owner
== NULL
)
8500 bfd_set_error (bfd_error_bad_value
);
8507 /* We are turning this relocation into one
8508 against a section symbol. It would be
8509 proper to subtract the symbol's value,
8510 osec->vma, from the emitted reloc addend,
8511 but ld.so expects buggy relocs.
8512 FIXME: Why not always use a zero index? */
8513 osec
= sec
->output_section
;
8514 indx
= elf_section_data (osec
)->dynindx
;
8517 osec
= htab
->elf
.text_index_section
;
8518 indx
= elf_section_data (osec
)->dynindx
;
8520 BFD_ASSERT (indx
!= 0);
8523 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8524 indx
, osec
->name
, osec
->flags
,
8525 h
->root
.root
.string
);
8529 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8531 else if (ifunc
!= NULL
)
8532 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8534 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8537 loc
= sreloc
->contents
;
8538 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8539 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8544 /* This reloc will be computed at runtime. We clear the memory
8545 so that it contains predictable value. */
8547 && ((input_section
->flags
& SEC_ALLOC
) != 0
8548 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
8550 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
8557 case R_PPC_RELAX_PLT
:
8558 case R_PPC_RELAX_PLTREL24
:
8561 struct plt_entry
*ent
;
8562 bfd_vma got2_addend
= 0;
8564 if (r_type
== R_PPC_RELAX_PLTREL24
)
8567 got2_addend
= addend
;
8570 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
8571 if (htab
->plt_type
== PLT_NEW
)
8572 relocation
= (htab
->glink
->output_section
->vma
8573 + htab
->glink
->output_offset
8574 + ent
->glink_offset
);
8576 relocation
= (htab
->plt
->output_section
->vma
8577 + htab
->plt
->output_offset
8586 size_t insn_offset
= rel
->r_offset
;
8591 relocation
-= (input_section
->output_section
->vma
8592 + input_section
->output_offset
8593 + rel
->r_offset
- 4);
8594 stub
= shared_stub_entry
;
8595 bfd_put_32 (output_bfd
, stub
[0], contents
+ insn_offset
- 12);
8596 bfd_put_32 (output_bfd
, stub
[1], contents
+ insn_offset
- 8);
8597 bfd_put_32 (output_bfd
, stub
[2], contents
+ insn_offset
- 4);
8599 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
8604 size
= ARRAY_SIZE (stub_entry
);
8607 relocation
+= addend
;
8608 if (info
->relocatable
)
8611 /* First insn is HA, second is LO. */
8613 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
8614 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8618 insn
|= relocation
& 0xffff;
8619 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8627 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8631 /* Rewrite the reloc and convert one of the trailing nop
8632 relocs to describe this relocation. */
8633 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
8634 /* The relocs are at the bottom 2 bytes */
8635 rel
[0].r_offset
+= d_offset
;
8636 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8637 rel
[0].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
8638 rel
[1].r_offset
+= 4;
8639 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
8644 /* Indirect .sdata relocation. */
8645 case R_PPC_EMB_SDAI16
:
8646 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
8647 if (!is_static_defined (htab
->sdata
[0].sym
))
8649 unresolved_reloc
= TRUE
;
8653 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
8654 h
, relocation
, rel
);
8658 /* Indirect .sdata2 relocation. */
8659 case R_PPC_EMB_SDA2I16
:
8660 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
8661 if (!is_static_defined (htab
->sdata
[1].sym
))
8663 unresolved_reloc
= TRUE
;
8667 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
8668 h
, relocation
, rel
);
8672 /* Handle the TOC16 reloc. We want to use the offset within the .got
8673 section, not the actual VMA. This is appropriate when generating
8674 an embedded ELF object, for which the .got section acts like the
8675 AIX .toc section. */
8676 case R_PPC_TOC16
: /* phony GOT16 relocations */
8677 if (sec
== NULL
|| sec
->output_section
== NULL
)
8679 unresolved_reloc
= TRUE
;
8682 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
8684 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
8687 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
8690 case R_PPC_PLTREL24
:
8691 if (h
!= NULL
&& ifunc
== NULL
)
8693 struct plt_entry
*ent
= find_plt_ent (&h
->plt
.plist
, got2
,
8694 info
->shared
? addend
: 0);
8696 || htab
->plt
== NULL
)
8698 /* We didn't make a PLT entry for this symbol. This
8699 happens when statically linking PIC code, or when
8700 using -Bsymbolic. */
8704 /* Relocation is to the entry for this symbol in the
8705 procedure linkage table. */
8706 unresolved_reloc
= FALSE
;
8707 if (htab
->plt_type
== PLT_NEW
)
8708 relocation
= (htab
->glink
->output_section
->vma
8709 + htab
->glink
->output_offset
8710 + ent
->glink_offset
);
8712 relocation
= (htab
->plt
->output_section
->vma
8713 + htab
->plt
->output_offset
8718 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8719 addend specifies the GOT pointer offset within .got2.
8720 Don't apply it to the relocation field. */
8724 /* Relocate against _SDA_BASE_. */
8725 case R_PPC_SDAREL16
:
8728 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
8731 || sec
->output_section
== NULL
8732 || !is_static_defined (sda
))
8734 unresolved_reloc
= TRUE
;
8737 addend
-= SYM_VAL (sda
);
8739 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8740 if (!(strcmp (name
, ".sdata") == 0
8741 || strcmp (name
, ".sbss") == 0))
8743 info
->callbacks
->einfo
8744 (_("%P: %B: the target (%s) of a %s relocation is "
8745 "in the wrong output section (%s)\n"),
8754 /* Relocate against _SDA2_BASE_. */
8755 case R_PPC_EMB_SDA2REL
:
8758 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
8761 || sec
->output_section
== NULL
8762 || !is_static_defined (sda
))
8764 unresolved_reloc
= TRUE
;
8767 addend
-= SYM_VAL (sda
);
8769 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8770 if (!(strcmp (name
, ".sdata2") == 0
8771 || strcmp (name
, ".sbss2") == 0))
8773 info
->callbacks
->einfo
8774 (_("%P: %B: the target (%s) of a %s relocation is "
8775 "in the wrong output section (%s)\n"),
8784 case R_PPC_VLE_LO16A
:
8785 relocation
= relocation
+ addend
;
8786 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8787 relocation
, split16a_type
);
8790 case R_PPC_VLE_LO16D
:
8791 relocation
= relocation
+ addend
;
8792 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8793 relocation
, split16d_type
);
8796 case R_PPC_VLE_HI16A
:
8797 relocation
= (relocation
+ addend
) >> 16;
8798 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8799 relocation
, split16a_type
);
8802 case R_PPC_VLE_HI16D
:
8803 relocation
= (relocation
+ addend
) >> 16;
8804 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8805 relocation
, split16d_type
);
8808 case R_PPC_VLE_HA16A
:
8809 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
8810 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8811 relocation
, split16a_type
);
8814 case R_PPC_VLE_HA16D
:
8815 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
8816 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8817 relocation
, split16d_type
);
8820 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8821 case R_PPC_EMB_SDA21
:
8822 case R_PPC_VLE_SDA21
:
8823 case R_PPC_EMB_RELSDA
:
8824 case R_PPC_VLE_SDA21_LO
:
8829 struct elf_link_hash_entry
*sda
= NULL
;
8831 if (sec
== NULL
|| sec
->output_section
== NULL
)
8833 unresolved_reloc
= TRUE
;
8837 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8838 if (strcmp (name
, ".sdata") == 0
8839 || strcmp (name
, ".sbss") == 0)
8842 sda
= htab
->sdata
[0].sym
;
8844 else if (strcmp (name
, ".sdata2") == 0
8845 || strcmp (name
, ".sbss2") == 0)
8848 sda
= htab
->sdata
[1].sym
;
8850 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
8851 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
8857 info
->callbacks
->einfo
8858 (_("%P: %B: the target (%s) of a %s relocation is "
8859 "in the wrong output section (%s)\n"),
8865 bfd_set_error (bfd_error_bad_value
);
8872 if (!is_static_defined (sda
))
8874 unresolved_reloc
= TRUE
;
8877 addend
-= SYM_VAL (sda
);
8880 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
8882 && (r_type
== R_PPC_VLE_SDA21
8883 || r_type
== R_PPC_VLE_SDA21_LO
))
8885 relocation
= relocation
+ addend
;
8888 /* Force e_li insn, keeping RT from original insn. */
8892 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8893 /* Top 4 bits of value to 17..20. */
8894 insn
|= (relocation
& 0xf0000) >> 5;
8895 /* Next 5 bits of the value to 11..15. */
8896 insn
|= (relocation
& 0xf800) << 5;
8897 /* And the final 11 bits of the value to bits 21 to 31. */
8898 insn
|= relocation
& 0x7ff;
8900 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8902 if (r_type
== R_PPC_VLE_SDA21
8903 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
8907 else if (r_type
== R_PPC_EMB_SDA21
8908 || r_type
== R_PPC_VLE_SDA21
8909 || r_type
== R_PPC_VLE_SDA21_LO
)
8911 /* Fill in register field. */
8912 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
8914 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8918 case R_PPC_VLE_SDAREL_LO16A
:
8919 case R_PPC_VLE_SDAREL_LO16D
:
8920 case R_PPC_VLE_SDAREL_HI16A
:
8921 case R_PPC_VLE_SDAREL_HI16D
:
8922 case R_PPC_VLE_SDAREL_HA16A
:
8923 case R_PPC_VLE_SDAREL_HA16D
:
8928 struct elf_link_hash_entry
*sda
= NULL
;
8930 if (sec
== NULL
|| sec
->output_section
== NULL
)
8932 unresolved_reloc
= TRUE
;
8936 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
8937 if (strcmp (name
, ".sdata") == 0
8938 || strcmp (name
, ".sbss") == 0)
8941 sda
= htab
->sdata
[0].sym
;
8943 else if (strcmp (name
, ".sdata2") == 0
8944 || strcmp (name
, ".sbss2") == 0)
8947 sda
= htab
->sdata
[1].sym
;
8951 (*_bfd_error_handler
)
8952 (_("%B: the target (%s) of a %s relocation is "
8953 "in the wrong output section (%s)"),
8959 bfd_set_error (bfd_error_bad_value
);
8966 if (!is_static_defined (sda
))
8968 unresolved_reloc
= TRUE
;
8973 value
= (sda
->root
.u
.def
.section
->output_section
->vma
8974 + sda
->root
.u
.def
.section
->output_offset
8977 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
8978 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8979 value
, split16a_type
);
8980 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
8981 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8982 value
, split16d_type
);
8983 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
8985 value
= value
>> 16;
8986 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8987 value
, split16a_type
);
8989 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
8991 value
= value
>> 16;
8992 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8993 value
, split16d_type
);
8995 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
8997 value
= (value
+ 0x8000) >> 16;
8998 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
8999 value
, split16a_type
);
9001 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
9003 value
= (value
+ 0x8000) >> 16;
9004 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9005 value
, split16d_type
);
9010 /* Relocate against the beginning of the section. */
9012 case R_PPC_SECTOFF_LO
:
9013 case R_PPC_SECTOFF_HI
:
9014 case R_PPC_SECTOFF_HA
:
9015 if (sec
== NULL
|| sec
->output_section
== NULL
)
9017 unresolved_reloc
= TRUE
;
9020 addend
-= sec
->output_section
->vma
;
9023 /* Negative relocations. */
9024 case R_PPC_EMB_NADDR32
:
9025 case R_PPC_EMB_NADDR16
:
9026 case R_PPC_EMB_NADDR16_LO
:
9027 case R_PPC_EMB_NADDR16_HI
:
9028 case R_PPC_EMB_NADDR16_HA
:
9029 addend
-= 2 * relocation
;
9033 case R_PPC_GLOB_DAT
:
9034 case R_PPC_JMP_SLOT
:
9035 case R_PPC_RELATIVE
:
9036 case R_PPC_IRELATIVE
:
9038 case R_PPC_PLTREL32
:
9039 case R_PPC_PLT16_LO
:
9040 case R_PPC_PLT16_HI
:
9041 case R_PPC_PLT16_HA
:
9043 case R_PPC_EMB_RELSEC16
:
9044 case R_PPC_EMB_RELST_LO
:
9045 case R_PPC_EMB_RELST_HI
:
9046 case R_PPC_EMB_RELST_HA
:
9047 case R_PPC_EMB_BIT_FLD
:
9048 info
->callbacks
->einfo
9049 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9054 bfd_set_error (bfd_error_invalid_operation
);
9059 /* Do any further special processing. */
9065 case R_PPC_ADDR16_HA
:
9066 case R_PPC_REL16_HA
:
9067 case R_PPC_SECTOFF_HA
:
9068 case R_PPC_TPREL16_HA
:
9069 case R_PPC_DTPREL16_HA
:
9070 case R_PPC_EMB_NADDR16_HA
:
9071 case R_PPC_EMB_RELST_HA
:
9072 /* It's just possible that this symbol is a weak symbol
9073 that's not actually defined anywhere. In that case,
9074 'sec' would be NULL, and we should leave the symbol
9075 alone (it will be set to zero elsewhere in the link). */
9080 case R_PPC_PLT16_HA
:
9081 case R_PPC_GOT16_HA
:
9082 case R_PPC_GOT_TLSGD16_HA
:
9083 case R_PPC_GOT_TLSLD16_HA
:
9084 case R_PPC_GOT_TPREL16_HA
:
9085 case R_PPC_GOT_DTPREL16_HA
:
9086 /* Add 0x10000 if sign bit in 0:15 is set.
9087 Bits 0:15 are not used. */
9092 case R_PPC_ADDR16_LO
:
9094 case R_PPC_GOT16_LO
:
9095 case R_PPC_SDAREL16
:
9097 case R_PPC_SECTOFF_LO
:
9098 case R_PPC_DTPREL16
:
9099 case R_PPC_DTPREL16_LO
:
9101 case R_PPC_TPREL16_LO
:
9102 case R_PPC_GOT_TLSGD16
:
9103 case R_PPC_GOT_TLSGD16_LO
:
9104 case R_PPC_GOT_TLSLD16
:
9105 case R_PPC_GOT_TLSLD16_LO
:
9106 case R_PPC_GOT_DTPREL16
:
9107 case R_PPC_GOT_DTPREL16_LO
:
9108 case R_PPC_GOT_TPREL16
:
9109 case R_PPC_GOT_TPREL16_LO
:
9111 /* The 32-bit ABI lacks proper relocations to deal with
9112 certain 64-bit instructions. Prevent damage to bits
9113 that make up part of the insn opcode. */
9114 unsigned int insn
, mask
, lobit
;
9116 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
9118 if (is_insn_ds_form (insn
))
9120 else if (is_insn_dq_form (insn
))
9124 lobit
= mask
& (relocation
+ addend
);
9128 info
->callbacks
->einfo
9129 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9130 input_bfd
, input_section
, rel
->r_offset
,
9131 howto
->name
, sym_name
, mask
+ 1);
9132 bfd_set_error (bfd_error_bad_value
);
9135 addend
+= insn
& mask
;
9141 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9142 "offset = %ld, addend = %ld\n",
9147 (long) rel
->r_offset
,
9151 if (unresolved_reloc
9152 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9154 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9155 rel
->r_offset
) != (bfd_vma
) -1)
9157 info
->callbacks
->einfo
9158 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9159 input_bfd
, input_section
, rel
->r_offset
,
9165 /* 16-bit fields in insns mostly have signed values, but a
9166 few insns have 16-bit unsigned values. Really, we should
9167 have different reloc types. */
9168 if (howto
->complain_on_overflow
!= complain_overflow_dont
9169 && howto
->dst_mask
== 0xffff
9170 && (input_section
->flags
& SEC_CODE
) != 0)
9172 enum complain_overflow complain
= complain_overflow_signed
;
9174 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9178 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9179 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9180 complain
= complain_overflow_bitfield
;
9181 else if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9182 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9183 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
9184 complain
= complain_overflow_unsigned
;
9186 if (howto
->complain_on_overflow
!= complain
)
9189 alt_howto
.complain_on_overflow
= complain
;
9194 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9195 rel
->r_offset
, relocation
, addend
);
9197 if (r
!= bfd_reloc_ok
)
9199 if (r
== bfd_reloc_overflow
)
9205 && h
->root
.type
== bfd_link_hash_undefweak
9206 && howto
->pc_relative
)
9208 /* Assume this is a call protected by other code that
9209 detect the symbol is undefined. If this is the case,
9210 we can safely ignore the overflow. If not, the
9211 program is hosed anyway, and a little warning isn't
9217 if (! (*info
->callbacks
->reloc_overflow
) (info
,
9218 (h
? &h
->root
: NULL
),
9229 info
->callbacks
->einfo
9230 (_("%P: %H: %s reloc against `%s': error %d\n"),
9231 input_bfd
, input_section
, rel
->r_offset
,
9232 howto
->name
, sym_name
, (int) r
);
9239 fprintf (stderr
, "\n");
9242 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9243 && input_section
->size
!= input_section
->rawsize
9244 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9245 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9247 /* Branch around the trampolines. */
9248 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9249 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9252 if (htab
->params
->ppc476_workaround
9253 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9254 && (!info
->relocatable
9255 || (input_section
->output_section
->alignment_power
9256 >= htab
->params
->pagesize_p2
)))
9258 struct ppc_elf_relax_info
*relax_info
;
9259 bfd_vma start_addr
, end_addr
, addr
;
9260 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9262 relax_info
= elf_section_data (input_section
)->sec_info
;
9263 if (relax_info
->workaround_size
!= 0)
9269 bfd_put_32 (input_bfd
, BA
, fill
);
9270 p
= contents
+ input_section
->size
- relax_info
->workaround_size
;
9271 n
= relax_info
->workaround_size
>> 2;
9274 memcpy (p
, fill
, 4);
9279 /* The idea is: Replace the last instruction on a page with a
9280 branch to a patch area. Put the insn there followed by a
9281 branch back to the next page. Complicated a little by
9282 needing to handle moved conditional branches, and by not
9283 wanting to touch data-in-text. */
9285 start_addr
= (input_section
->output_section
->vma
9286 + input_section
->output_offset
);
9287 end_addr
= (start_addr
+ input_section
->size
9288 - relax_info
->workaround_size
);
9289 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9293 bfd_vma offset
= addr
- start_addr
;
9294 Elf_Internal_Rela
*lo
, *hi
;
9295 bfd_boolean is_data
;
9296 bfd_vma patch_off
, patch_addr
;
9299 /* Do we have a data reloc at this offset? If so, leave
9307 rel
= lo
+ (hi
- lo
) / 2;
9308 if (rel
->r_offset
< offset
)
9310 else if (rel
->r_offset
> offset
+ 3)
9314 switch (ELF32_R_TYPE (rel
->r_info
))
9331 /* Some instructions can be left alone too. Unconditional
9332 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9333 avoid the icache failure.
9335 The problem occurs due to prefetch across a page boundary
9336 where stale instructions can be fetched from the next
9337 page, and the mechanism for flushing these bad
9338 instructions fails under certain circumstances. The
9339 unconditional branches:
9340 1) Branch: b, bl, ba, bla,
9341 2) Branch Conditional: bc, bca, bcl, bcla,
9342 3) Branch Conditional to Link Register: bclr, bclrl,
9343 where (2) and (3) have BO=0x14 making them unconditional,
9344 prevent the bad prefetch because the prefetch itself is
9345 affected by these instructions. This happens even if the
9346 instruction is not executed.
9351 . addi 9,9,new_page@l
9358 The bctr is not predicted taken due to ctr not being
9359 ready, so prefetch continues on past the bctr into the
9360 new page which might have stale instructions. If they
9361 fail to be flushed, then they will be executed after the
9362 bctr executes. Either of the following modifications
9363 prevent the bad prefetch from happening in the first
9366 . lis 9,new_page@ha lis 9,new_page@ha
9367 . addi 9,9,new_page@l addi 9,9,new_page@l
9370 . nop b somewhere_else
9371 . b somewhere_else nop
9372 . new_page: new_page:
9374 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9375 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9376 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9377 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9378 || ((insn
& (0x3f << 26)) == (19u << 26)
9379 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9380 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9383 patch_addr
= (start_addr
+ input_section
->size
9384 - relax_info
->workaround_size
);
9385 patch_addr
= (patch_addr
+ 15) & -16;
9386 patch_off
= patch_addr
- start_addr
;
9387 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9390 && rel
->r_offset
>= offset
9391 && rel
->r_offset
< offset
+ 4)
9393 /* If the insn we are patching had a reloc, adjust the
9394 reloc r_offset so that the reloc applies to the moved
9395 location. This matters for -r and --emit-relocs. */
9396 if (rel
+ 1 != relend
)
9398 Elf_Internal_Rela tmp
= *rel
;
9400 /* Keep the relocs sorted by r_offset. */
9401 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9404 relend
[-1].r_offset
+= patch_off
- offset
;
9409 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9410 && (insn
& 2) == 0 /* relative */)
9412 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
9414 delta
+= offset
- patch_off
;
9415 if (info
->relocatable
&& rel
!= NULL
)
9417 if (!info
->relocatable
&& rel
!= NULL
)
9419 enum elf_ppc_reloc_type r_type
;
9421 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
9422 if (r_type
== R_PPC_REL14_BRTAKEN
)
9423 insn
|= BRANCH_PREDICT_BIT
;
9424 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
9425 insn
&= ~BRANCH_PREDICT_BIT
;
9427 BFD_ASSERT (r_type
== R_PPC_REL14
);
9429 if ((r_type
== R_PPC_REL14_BRTAKEN
9430 || r_type
== R_PPC_REL14_BRNTAKEN
)
9431 && delta
+ 0x8000 < 0x10000
9432 && (bfd_signed_vma
) delta
< 0)
9433 insn
^= BRANCH_PREDICT_BIT
;
9435 if (delta
+ 0x8000 < 0x10000)
9437 bfd_put_32 (input_bfd
,
9438 (insn
& ~0xfffc) | (delta
& 0xfffc),
9439 contents
+ patch_off
);
9441 bfd_put_32 (input_bfd
,
9442 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9443 contents
+ patch_off
);
9450 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
9452 relend
[-1].r_offset
+= 8;
9453 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
9455 bfd_put_32 (input_bfd
,
9456 (insn
& ~0xfffc) | 8,
9457 contents
+ patch_off
);
9459 bfd_put_32 (input_bfd
,
9460 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9461 contents
+ patch_off
);
9463 bfd_put_32 (input_bfd
,
9464 B
| ((delta
- 8) & 0x3fffffc),
9465 contents
+ patch_off
);
9471 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
9473 bfd_put_32 (input_bfd
,
9474 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9475 contents
+ patch_off
);
9478 BFD_ASSERT (patch_off
<= input_section
->size
);
9479 relax_info
->workaround_size
= input_section
->size
- patch_off
;
9486 /* Finish up dynamic symbol handling. We set the contents of various
9487 dynamic sections here. */
9490 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9491 struct bfd_link_info
*info
,
9492 struct elf_link_hash_entry
*h
,
9493 Elf_Internal_Sym
*sym
)
9495 struct ppc_elf_link_hash_table
*htab
;
9496 struct plt_entry
*ent
;
9497 bfd_boolean doneone
;
9500 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
9501 h
->root
.root
.string
);
9504 htab
= ppc_elf_hash_table (info
);
9505 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
9508 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9509 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9513 Elf_Internal_Rela rela
;
9515 bfd_vma reloc_index
;
9517 if (htab
->plt_type
== PLT_NEW
9518 || !htab
->elf
.dynamic_sections_created
9519 || h
->dynindx
== -1)
9520 reloc_index
= ent
->plt
.offset
/ 4;
9523 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
9524 / htab
->plt_slot_size
);
9525 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
9526 && htab
->plt_type
== PLT_OLD
)
9527 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
9530 /* This symbol has an entry in the procedure linkage table.
9532 if (htab
->plt_type
== PLT_VXWORKS
9533 && htab
->elf
.dynamic_sections_created
9534 && h
->dynindx
!= -1)
9537 const bfd_vma
*plt_entry
;
9539 /* The first three entries in .got.plt are reserved. */
9540 got_offset
= (reloc_index
+ 3) * 4;
9542 /* Use the right PLT. */
9543 plt_entry
= info
->shared
? ppc_elf_vxworks_pic_plt_entry
9544 : ppc_elf_vxworks_plt_entry
;
9546 /* Fill in the .plt on VxWorks. */
9549 bfd_put_32 (output_bfd
,
9550 plt_entry
[0] | PPC_HA (got_offset
),
9551 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
9552 bfd_put_32 (output_bfd
,
9553 plt_entry
[1] | PPC_LO (got_offset
),
9554 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
9558 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
9560 bfd_put_32 (output_bfd
,
9561 plt_entry
[0] | PPC_HA (got_loc
),
9562 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
9563 bfd_put_32 (output_bfd
,
9564 plt_entry
[1] | PPC_LO (got_loc
),
9565 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
9568 bfd_put_32 (output_bfd
, plt_entry
[2],
9569 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
9570 bfd_put_32 (output_bfd
, plt_entry
[3],
9571 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
9573 /* This instruction is an immediate load. The value loaded is
9574 the byte offset of the R_PPC_JMP_SLOT relocation from the
9575 start of the .rela.plt section. The value is stored in the
9576 low-order 16 bits of the load instruction. */
9577 /* NOTE: It appears that this is now an index rather than a
9578 prescaled offset. */
9579 bfd_put_32 (output_bfd
,
9580 plt_entry
[4] | reloc_index
,
9581 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
9582 /* This instruction is a PC-relative branch whose target is
9583 the start of the PLT section. The address of this branch
9584 instruction is 20 bytes beyond the start of this PLT entry.
9585 The address is encoded in bits 6-29, inclusive. The value
9586 stored is right-shifted by two bits, permitting a 26-bit
9588 bfd_put_32 (output_bfd
,
9590 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
9591 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
9592 bfd_put_32 (output_bfd
, plt_entry
[6],
9593 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
9594 bfd_put_32 (output_bfd
, plt_entry
[7],
9595 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
9597 /* Fill in the GOT entry corresponding to this PLT slot with
9598 the address immediately after the "bctr" instruction
9599 in this PLT entry. */
9600 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
9601 + htab
->plt
->output_offset
9602 + ent
->plt
.offset
+ 16),
9603 htab
->sgotplt
->contents
+ got_offset
);
9607 /* Fill in a couple of entries in .rela.plt.unloaded. */
9608 loc
= htab
->srelplt2
->contents
9609 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
9610 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
9611 * sizeof (Elf32_External_Rela
));
9613 /* Provide the @ha relocation for the first instruction. */
9614 rela
.r_offset
= (htab
->plt
->output_section
->vma
9615 + htab
->plt
->output_offset
9616 + ent
->plt
.offset
+ 2);
9617 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
9619 rela
.r_addend
= got_offset
;
9620 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9621 loc
+= sizeof (Elf32_External_Rela
);
9623 /* Provide the @l relocation for the second instruction. */
9624 rela
.r_offset
= (htab
->plt
->output_section
->vma
9625 + htab
->plt
->output_offset
9626 + ent
->plt
.offset
+ 6);
9627 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
9629 rela
.r_addend
= got_offset
;
9630 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9631 loc
+= sizeof (Elf32_External_Rela
);
9633 /* Provide a relocation for the GOT entry corresponding to this
9634 PLT slot. Point it at the middle of the .plt entry. */
9635 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
9636 + htab
->sgotplt
->output_offset
9638 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
9640 rela
.r_addend
= ent
->plt
.offset
+ 16;
9641 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9644 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9645 In particular, the offset for the relocation is not the
9646 address of the PLT entry for this function, as specified
9647 by the ABI. Instead, the offset is set to the address of
9648 the GOT slot for this function. See EABI 4.4.4.1. */
9649 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
9650 + htab
->sgotplt
->output_offset
9656 asection
*splt
= htab
->plt
;
9657 if (!htab
->elf
.dynamic_sections_created
9658 || h
->dynindx
== -1)
9661 rela
.r_offset
= (splt
->output_section
->vma
9662 + splt
->output_offset
9664 if (htab
->plt_type
== PLT_OLD
9665 || !htab
->elf
.dynamic_sections_created
9666 || h
->dynindx
== -1)
9668 /* We don't need to fill in the .plt. The ppc dynamic
9669 linker will fill it in. */
9673 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
9674 + htab
->glink
->output_section
->vma
9675 + htab
->glink
->output_offset
);
9676 bfd_put_32 (output_bfd
, val
,
9677 splt
->contents
+ ent
->plt
.offset
);
9681 /* Fill in the entry in the .rela.plt section. */
9683 if (!htab
->elf
.dynamic_sections_created
9684 || h
->dynindx
== -1)
9686 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
9688 && (h
->root
.type
== bfd_link_hash_defined
9689 || h
->root
.type
== bfd_link_hash_defweak
));
9690 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
9691 rela
.r_addend
= SYM_VAL (h
);
9694 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
9696 if (!htab
->elf
.dynamic_sections_created
9697 || h
->dynindx
== -1)
9698 loc
= (htab
->reliplt
->contents
9699 + (htab
->reliplt
->reloc_count
++
9700 * sizeof (Elf32_External_Rela
)));
9702 loc
= (htab
->relplt
->contents
9703 + reloc_index
* sizeof (Elf32_External_Rela
));
9704 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9706 if (!h
->def_regular
)
9708 /* Mark the symbol as undefined, rather than as
9709 defined in the .plt section. Leave the value if
9710 there were any relocations where pointer equality
9711 matters (this is a clue for the dynamic linker, to
9712 make function pointer comparisons work between an
9713 application and shared library), otherwise set it
9715 sym
->st_shndx
= SHN_UNDEF
;
9716 if (!h
->pointer_equality_needed
)
9718 else if (!h
->ref_regular_nonweak
)
9720 /* This breaks function pointer comparisons, but
9721 that is better than breaking tests for a NULL
9722 function pointer. */
9726 else if (h
->type
== STT_GNU_IFUNC
9729 /* Set the value of ifunc symbols in a non-pie
9730 executable to the glink entry. This is to avoid
9731 text relocations. We can't do this for ifunc in
9732 allocate_dynrelocs, as we do for normal dynamic
9733 function symbols with plt entries, because we need
9734 to keep the original value around for the ifunc
9736 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
9737 (output_bfd
, htab
->glink
->output_section
));
9738 sym
->st_value
= (ent
->glink_offset
9739 + htab
->glink
->output_offset
9740 + htab
->glink
->output_section
->vma
);
9745 if (htab
->plt_type
== PLT_NEW
9746 || !htab
->elf
.dynamic_sections_created
9747 || h
->dynindx
== -1)
9750 asection
*splt
= htab
->plt
;
9751 if (!htab
->elf
.dynamic_sections_created
9752 || h
->dynindx
== -1)
9755 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
9757 if (h
== htab
->tls_get_addr
&& !htab
->params
->no_tls_get_addr_opt
)
9759 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
9761 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
9763 bfd_put_32 (output_bfd
, MR_0_3
, p
);
9765 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
9767 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
9769 bfd_put_32 (output_bfd
, BEQLR
, p
);
9771 bfd_put_32 (output_bfd
, MR_3_0
, p
);
9773 bfd_put_32 (output_bfd
, NOP
, p
);
9777 write_glink_stub (ent
, splt
, p
, info
);
9780 /* We only need one non-PIC glink stub. */
9790 Elf_Internal_Rela rela
;
9793 /* This symbols needs a copy reloc. Set it up. */
9796 fprintf (stderr
, ", copy");
9799 BFD_ASSERT (h
->dynindx
!= -1);
9801 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
9805 BFD_ASSERT (s
!= NULL
);
9807 rela
.r_offset
= SYM_VAL (h
);
9808 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
9810 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
9811 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
9815 fprintf (stderr
, "\n");
9821 static enum elf_reloc_type_class
9822 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
9823 const asection
*rel_sec
,
9824 const Elf_Internal_Rela
*rela
)
9826 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
9828 if (rel_sec
== htab
->reliplt
)
9829 return reloc_class_ifunc
;
9831 switch (ELF32_R_TYPE (rela
->r_info
))
9833 case R_PPC_RELATIVE
:
9834 return reloc_class_relative
;
9835 case R_PPC_JMP_SLOT
:
9836 return reloc_class_plt
;
9838 return reloc_class_copy
;
9840 return reloc_class_normal
;
9844 /* Finish up the dynamic sections. */
9847 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
9848 struct bfd_link_info
*info
)
9852 struct ppc_elf_link_hash_table
*htab
;
9855 bfd_boolean ret
= TRUE
;
9858 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
9861 htab
= ppc_elf_hash_table (info
);
9862 dynobj
= elf_hash_table (info
)->dynobj
;
9863 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
9864 if (htab
->is_vxworks
)
9865 splt
= bfd_get_linker_section (dynobj
, ".plt");
9870 if (htab
->elf
.hgot
!= NULL
)
9871 got
= SYM_VAL (htab
->elf
.hgot
);
9873 if (htab
->elf
.dynamic_sections_created
)
9875 Elf32_External_Dyn
*dyncon
, *dynconend
;
9877 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
9879 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
9880 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9881 for (; dyncon
< dynconend
; dyncon
++)
9883 Elf_Internal_Dyn dyn
;
9886 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9891 if (htab
->is_vxworks
)
9895 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9899 dyn
.d_un
.d_val
= htab
->relplt
->size
;
9904 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9908 dyn
.d_un
.d_ptr
= got
;
9912 if (htab
->is_vxworks
)
9915 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
9921 if (htab
->is_vxworks
9922 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
9927 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9931 if (htab
->got
!= NULL
)
9933 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->got
9934 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->sgotplt
)
9936 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
9938 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
9939 if (htab
->plt_type
== PLT_OLD
)
9941 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9942 so that a function can easily find the address of
9943 _GLOBAL_OFFSET_TABLE_. */
9944 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
9945 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
9946 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
9951 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
9952 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
9953 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
9954 bfd_put_32 (output_bfd
, val
, p
);
9959 info
->callbacks
->einfo (_("%P: %s not defined in linker created %s\n"),
9960 htab
->elf
.hgot
->root
.root
.string
,
9961 (htab
->sgotplt
!= NULL
9962 ? htab
->sgotplt
->name
: htab
->got
->name
));
9963 bfd_set_error (bfd_error_bad_value
);
9967 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
9970 /* Fill in the first entry in the VxWorks procedure linkage table. */
9971 if (splt
&& splt
->size
> 0)
9973 /* Use the right PLT. */
9974 const bfd_vma
*plt_entry
= (info
->shared
9975 ? ppc_elf_vxworks_pic_plt0_entry
9976 : ppc_elf_vxworks_plt0_entry
);
9980 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
9982 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
9983 splt
->contents
+ 0);
9984 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
9985 splt
->contents
+ 4);
9989 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
9990 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
9992 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
9993 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
9994 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
9995 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
9996 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
9997 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
10001 Elf_Internal_Rela rela
;
10004 loc
= htab
->srelplt2
->contents
;
10006 /* Output the @ha relocation for the first instruction. */
10007 rela
.r_offset
= (htab
->plt
->output_section
->vma
10008 + htab
->plt
->output_offset
10010 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10012 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10013 loc
+= sizeof (Elf32_External_Rela
);
10015 /* Output the @l relocation for the second instruction. */
10016 rela
.r_offset
= (htab
->plt
->output_section
->vma
10017 + htab
->plt
->output_offset
10019 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10021 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10022 loc
+= sizeof (Elf32_External_Rela
);
10024 /* Fix up the remaining relocations. They may have the wrong
10025 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10026 in which symbols were output. */
10027 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
10029 Elf_Internal_Rela rel
;
10031 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10032 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10033 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10034 loc
+= sizeof (Elf32_External_Rela
);
10036 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10037 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10038 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10039 loc
+= sizeof (Elf32_External_Rela
);
10041 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10042 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
10043 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10044 loc
+= sizeof (Elf32_External_Rela
);
10049 if (htab
->glink
!= NULL
10050 && htab
->glink
->contents
!= NULL
10051 && htab
->elf
.dynamic_sections_created
)
10054 unsigned char *endp
;
10059 * PIC glink code is the following:
10061 * # ith PLT code stub.
10062 * addis 11,30,(plt+(i-1)*4-got)@ha
10063 * lwz 11,(plt+(i-1)*4-got)@l(11)
10067 * # A table of branches, one for each plt entry.
10068 * # The idea is that the plt call stub loads ctr and r11 with these
10069 * # addresses, so (r11 - res_0) gives the plt index * 4.
10070 * res_0: b PLTresolve
10071 * res_1: b PLTresolve
10073 * # Some number of entries towards the end can be nops
10079 * addis 11,11,(1f-res_0)@ha
10082 * 1: addi 11,11,(1b-res_0)@l
10085 * sub 11,11,12 # r11 = index * 4
10086 * addis 12,12,(got+4-1b)@ha
10087 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10088 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10091 * add 11,0,11 # r11 = index * 12 = reloc offset.
10094 static const unsigned int pic_plt_resolve
[] =
10115 * Non-PIC glink code is a little simpler.
10117 * # ith PLT code stub.
10118 * lis 11,(plt+(i-1)*4)@ha
10119 * lwz 11,(plt+(i-1)*4)@l(11)
10123 * The branch table is the same, then comes
10126 * lis 12,(got+4)@ha
10127 * addis 11,11,(-res_0)@ha
10128 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10129 * addi 11,11,(-res_0)@l # r11 = index * 4
10132 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10133 * add 11,0,11 # r11 = index * 12 = reloc offset.
10136 static const unsigned int plt_resolve
[] =
10156 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10158 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10161 /* Build the branch table, one for each plt entry (less one),
10162 and perhaps some padding. */
10163 p
= htab
->glink
->contents
;
10164 p
+= htab
->glink_pltresolve
;
10165 endp
= htab
->glink
->contents
;
10166 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10167 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10169 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10174 bfd_put_32 (output_bfd
, NOP
, p
);
10178 res0
= (htab
->glink_pltresolve
10179 + htab
->glink
->output_section
->vma
10180 + htab
->glink
->output_offset
);
10182 if (htab
->params
->ppc476_workaround
)
10184 /* Ensure that a call stub at the end of a page doesn't
10185 result in prefetch over the end of the page into the
10186 glink branch table. */
10187 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10189 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10190 + htab
->glink
->output_offset
);
10192 for (page_addr
= res0
& -pagesize
;
10193 page_addr
> glink_start
;
10194 page_addr
-= pagesize
)
10196 /* We have a plt call stub that may need fixing. */
10200 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10201 insn
= bfd_get_32 (output_bfd
, loc
);
10204 /* By alignment, we know that there must be at least
10205 one other call stub before this one. */
10206 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10208 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10210 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10215 /* Last comes the PLTresolve stub. */
10220 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
10222 unsigned int insn
= pic_plt_resolve
[i
];
10224 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10226 bfd_put_32 (output_bfd
, insn
, p
);
10229 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
10231 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10232 + htab
->glink
->output_section
->vma
10233 + htab
->glink
->output_offset
);
10235 bfd_put_32 (output_bfd
,
10236 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
10237 bfd_put_32 (output_bfd
,
10238 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
10239 bfd_put_32 (output_bfd
,
10240 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
10241 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10243 bfd_put_32 (output_bfd
,
10244 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10245 bfd_put_32 (output_bfd
,
10246 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
10250 bfd_put_32 (output_bfd
,
10251 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10252 bfd_put_32 (output_bfd
,
10253 LWZ_12_12
+ 4, p
+ 9*4);
10258 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
10260 unsigned int insn
= plt_resolve
[i
];
10262 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10264 bfd_put_32 (output_bfd
, insn
, p
);
10267 p
-= 4 * ARRAY_SIZE (plt_resolve
);
10269 bfd_put_32 (output_bfd
,
10270 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
10271 bfd_put_32 (output_bfd
,
10272 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
10273 bfd_put_32 (output_bfd
,
10274 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
10275 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10277 bfd_put_32 (output_bfd
,
10278 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10279 bfd_put_32 (output_bfd
,
10280 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
10284 bfd_put_32 (output_bfd
,
10285 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10286 bfd_put_32 (output_bfd
,
10287 LWZ_12_12
+ 4, p
+ 6*4);
10292 if (htab
->glink_eh_frame
!= NULL
10293 && htab
->glink_eh_frame
->contents
!= NULL
)
10295 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10298 p
+= sizeof (glink_eh_frame_cie
);
10303 /* Offset to .glink. */
10304 val
= (htab
->glink
->output_section
->vma
10305 + htab
->glink
->output_offset
);
10306 val
-= (htab
->glink_eh_frame
->output_section
->vma
10307 + htab
->glink_eh_frame
->output_offset
);
10308 val
-= p
- htab
->glink_eh_frame
->contents
;
10309 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10311 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10312 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10313 htab
->glink_eh_frame
,
10314 htab
->glink_eh_frame
->contents
))
10321 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10322 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10323 #define TARGET_BIG_SYM powerpc_elf32_vec
10324 #define TARGET_BIG_NAME "elf32-powerpc"
10325 #define ELF_ARCH bfd_arch_powerpc
10326 #define ELF_TARGET_ID PPC32_ELF_DATA
10327 #define ELF_MACHINE_CODE EM_PPC
10328 #ifdef __QNXTARGET__
10329 #define ELF_MAXPAGESIZE 0x1000
10330 #define ELF_COMMONPAGESIZE 0x1000
10332 #define ELF_MAXPAGESIZE 0x10000
10333 #define ELF_COMMONPAGESIZE 0x10000
10335 #define ELF_MINPAGESIZE 0x1000
10336 #define elf_info_to_howto ppc_elf_info_to_howto
10338 #ifdef EM_CYGNUS_POWERPC
10339 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10343 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10346 #define elf_backend_plt_not_loaded 1
10347 #define elf_backend_can_gc_sections 1
10348 #define elf_backend_can_refcount 1
10349 #define elf_backend_rela_normal 1
10350 #define elf_backend_caches_rawsize 1
10352 #define bfd_elf32_mkobject ppc_elf_mkobject
10353 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10354 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10355 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10356 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10357 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10358 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10359 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10361 #define elf_backend_object_p ppc_elf_object_p
10362 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10363 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10364 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10365 #define elf_backend_relocate_section ppc_elf_relocate_section
10366 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10367 #define elf_backend_check_relocs ppc_elf_check_relocs
10368 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10369 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10370 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10371 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10372 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10373 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10374 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10375 #define elf_backend_fake_sections ppc_elf_fake_sections
10376 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10377 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10378 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10379 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10380 #define elf_backend_write_core_note ppc_elf_write_core_note
10381 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10382 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10383 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10384 #define elf_backend_write_section ppc_elf_write_section
10385 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10386 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10387 #define elf_backend_action_discarded ppc_elf_action_discarded
10388 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10389 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10390 #define elf_backend_section_processing ppc_elf_section_processing
10392 #include "elf32-target.h"
10394 /* FreeBSD Target */
10396 #undef TARGET_LITTLE_SYM
10397 #undef TARGET_LITTLE_NAME
10399 #undef TARGET_BIG_SYM
10400 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10401 #undef TARGET_BIG_NAME
10402 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10405 #define ELF_OSABI ELFOSABI_FREEBSD
10408 #define elf32_bed elf32_powerpc_fbsd_bed
10410 #include "elf32-target.h"
10412 /* VxWorks Target */
10414 #undef TARGET_LITTLE_SYM
10415 #undef TARGET_LITTLE_NAME
10417 #undef TARGET_BIG_SYM
10418 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10419 #undef TARGET_BIG_NAME
10420 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10424 /* VxWorks uses the elf default section flags for .plt. */
10425 static const struct bfd_elf_special_section
*
10426 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
10428 if (sec
->name
== NULL
)
10431 if (strcmp (sec
->name
, ".plt") == 0)
10432 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
10434 return ppc_elf_get_sec_type_attr (abfd
, sec
);
10437 /* Like ppc_elf_link_hash_table_create, but overrides
10438 appropriately for VxWorks. */
10439 static struct bfd_link_hash_table
*
10440 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
10442 struct bfd_link_hash_table
*ret
;
10444 ret
= ppc_elf_link_hash_table_create (abfd
);
10447 struct ppc_elf_link_hash_table
*htab
10448 = (struct ppc_elf_link_hash_table
*)ret
;
10449 htab
->is_vxworks
= 1;
10450 htab
->plt_type
= PLT_VXWORKS
;
10451 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
10452 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
10453 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
10458 /* Tweak magic VxWorks symbols as they are loaded. */
10460 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
10461 struct bfd_link_info
*info
,
10462 Elf_Internal_Sym
*sym
,
10463 const char **namep ATTRIBUTE_UNUSED
,
10464 flagword
*flagsp ATTRIBUTE_UNUSED
,
10468 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
10472 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
10476 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10478 ppc_elf_final_write_processing(abfd
, linker
);
10479 elf_vxworks_final_write_processing(abfd
, linker
);
10482 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10484 #undef elf_backend_want_plt_sym
10485 #define elf_backend_want_plt_sym 1
10486 #undef elf_backend_want_got_plt
10487 #define elf_backend_want_got_plt 1
10488 #undef elf_backend_got_symbol_offset
10489 #define elf_backend_got_symbol_offset 0
10490 #undef elf_backend_plt_not_loaded
10491 #define elf_backend_plt_not_loaded 0
10492 #undef elf_backend_plt_readonly
10493 #define elf_backend_plt_readonly 1
10494 #undef elf_backend_got_header_size
10495 #define elf_backend_got_header_size 12
10497 #undef bfd_elf32_get_synthetic_symtab
10499 #undef bfd_elf32_bfd_link_hash_table_create
10500 #define bfd_elf32_bfd_link_hash_table_create \
10501 ppc_elf_vxworks_link_hash_table_create
10502 #undef elf_backend_add_symbol_hook
10503 #define elf_backend_add_symbol_hook \
10504 ppc_elf_vxworks_add_symbol_hook
10505 #undef elf_backend_link_output_symbol_hook
10506 #define elf_backend_link_output_symbol_hook \
10507 elf_vxworks_link_output_symbol_hook
10508 #undef elf_backend_final_write_processing
10509 #define elf_backend_final_write_processing \
10510 ppc_elf_vxworks_final_write_processing
10511 #undef elf_backend_get_sec_type_attr
10512 #define elf_backend_get_sec_type_attr \
10513 ppc_elf_vxworks_get_sec_type_attr
10514 #undef elf_backend_emit_relocs
10515 #define elf_backend_emit_relocs \
10516 elf_vxworks_emit_relocs
10519 #define elf32_bed ppc_elf_vxworks_bed
10520 #undef elf_backend_post_process_headers
10522 #include "elf32-target.h"