1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2018 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 "opcode/ppc.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(htab, h) \
74 && h == htab->tls_get_addr \
75 && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \
76 + (1u << htab->params->plt_stub_align) - 1) \
77 & -(1u << htab->params->plt_stub_align))
79 /* VxWorks uses its own plt layout, filled in by the static linker. */
81 /* The standard VxWorks PLT entry. */
82 #define VXWORKS_PLT_ENTRY_SIZE 32
83 static const bfd_vma ppc_elf_vxworks_plt_entry
84 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
86 0x3d800000, /* lis r12,0 */
87 0x818c0000, /* lwz r12,0(r12) */
88 0x7d8903a6, /* mtctr r12 */
89 0x4e800420, /* bctr */
90 0x39600000, /* li r11,0 */
91 0x48000000, /* b 14 <.PLT0resolve+0x4> */
95 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
96 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
98 0x3d9e0000, /* addis r12,r30,0 */
99 0x818c0000, /* lwz r12,0(r12) */
100 0x7d8903a6, /* mtctr r12 */
101 0x4e800420, /* bctr */
102 0x39600000, /* li r11,0 */
103 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
104 0x60000000, /* nop */
105 0x60000000, /* nop */
108 /* The initial VxWorks PLT entry. */
109 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
110 static const bfd_vma ppc_elf_vxworks_plt0_entry
111 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
113 0x3d800000, /* lis r12,0 */
114 0x398c0000, /* addi r12,r12,0 */
115 0x800c0008, /* lwz r0,8(r12) */
116 0x7c0903a6, /* mtctr r0 */
117 0x818c0004, /* lwz r12,4(r12) */
118 0x4e800420, /* bctr */
119 0x60000000, /* nop */
120 0x60000000, /* nop */
122 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
123 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
125 0x819e0008, /* lwz r12,8(r30) */
126 0x7d8903a6, /* mtctr r12 */
127 0x819e0004, /* lwz r12,4(r30) */
128 0x4e800420, /* bctr */
129 0x60000000, /* nop */
130 0x60000000, /* nop */
131 0x60000000, /* nop */
132 0x60000000, /* nop */
135 /* For executables, we have some additional relocations in
136 .rela.plt.unloaded, for the kernel loader. */
138 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
139 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
140 /* The number of relocations in the PLTResolve slot. */
141 #define VXWORKS_PLTRESOLVE_RELOCS 2
142 /* The number of relocations in the PLTResolve slot when creating
144 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
146 /* Some instructions. */
147 #define ADDIS_11_11 0x3d6b0000
148 #define ADDIS_11_30 0x3d7e0000
149 #define ADDIS_12_12 0x3d8c0000
150 #define ADDI_11_11 0x396b0000
151 #define ADD_0_11_11 0x7c0b5a14
152 #define ADD_3_12_2 0x7c6c1214
153 #define ADD_11_0_11 0x7d605a14
155 #define BA 0x48000002
156 #define BCL_20_31 0x429f0005
157 #define BCTR 0x4e800420
158 #define BEQLR 0x4d820020
159 #define CMPWI_11_0 0x2c0b0000
160 #define LIS_11 0x3d600000
161 #define LIS_12 0x3d800000
162 #define LWZU_0_12 0x840c0000
163 #define LWZ_0_12 0x800c0000
164 #define LWZ_11_3 0x81630000
165 #define LWZ_11_11 0x816b0000
166 #define LWZ_11_30 0x817e0000
167 #define LWZ_12_3 0x81830000
168 #define LWZ_12_12 0x818c0000
169 #define MR_0_3 0x7c601b78
170 #define MR_3_0 0x7c030378
171 #define MFLR_0 0x7c0802a6
172 #define MFLR_12 0x7d8802a6
173 #define MTCTR_0 0x7c0903a6
174 #define MTCTR_11 0x7d6903a6
175 #define MTLR_0 0x7c0803a6
176 #define NOP 0x60000000
177 #define SUB_11_11_12 0x7d6c5850
179 /* Offset of tp and dtp pointers from start of TLS block. */
180 #define TP_OFFSET 0x7000
181 #define DTP_OFFSET 0x8000
183 /* The value of a defined global symbol. */
184 #define SYM_VAL(SYM) \
185 ((SYM)->root.u.def.section->output_section->vma \
186 + (SYM)->root.u.def.section->output_offset \
187 + (SYM)->root.u.def.value)
189 static reloc_howto_type
*ppc_elf_howto_table
[R_PPC_max
];
191 static reloc_howto_type ppc_elf_howto_raw
[] = {
192 /* This reloc does nothing. */
193 HOWTO (R_PPC_NONE
, /* type */
195 3, /* size (0 = byte, 1 = short, 2 = long) */
197 FALSE
, /* pc_relative */
199 complain_overflow_dont
, /* complain_on_overflow */
200 bfd_elf_generic_reloc
, /* special_function */
201 "R_PPC_NONE", /* name */
202 FALSE
, /* partial_inplace */
205 FALSE
), /* pcrel_offset */
207 /* A standard 32 bit relocation. */
208 HOWTO (R_PPC_ADDR32
, /* type */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
212 FALSE
, /* pc_relative */
214 complain_overflow_dont
, /* complain_on_overflow */
215 bfd_elf_generic_reloc
, /* special_function */
216 "R_PPC_ADDR32", /* name */
217 FALSE
, /* partial_inplace */
219 0xffffffff, /* dst_mask */
220 FALSE
), /* pcrel_offset */
222 /* An absolute 26 bit branch; the lower two bits must be zero.
223 FIXME: we don't check that, we just clear them. */
224 HOWTO (R_PPC_ADDR24
, /* type */
226 2, /* size (0 = byte, 1 = short, 2 = long) */
228 FALSE
, /* pc_relative */
230 complain_overflow_signed
, /* complain_on_overflow */
231 bfd_elf_generic_reloc
, /* special_function */
232 "R_PPC_ADDR24", /* name */
233 FALSE
, /* partial_inplace */
235 0x3fffffc, /* dst_mask */
236 FALSE
), /* pcrel_offset */
238 /* A standard 16 bit relocation. */
239 HOWTO (R_PPC_ADDR16
, /* type */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
243 FALSE
, /* pc_relative */
245 complain_overflow_bitfield
, /* complain_on_overflow */
246 bfd_elf_generic_reloc
, /* special_function */
247 "R_PPC_ADDR16", /* name */
248 FALSE
, /* partial_inplace */
250 0xffff, /* dst_mask */
251 FALSE
), /* pcrel_offset */
253 /* A 16 bit relocation without overflow. */
254 HOWTO (R_PPC_ADDR16_LO
, /* type */
256 1, /* size (0 = byte, 1 = short, 2 = long) */
258 FALSE
, /* pc_relative */
260 complain_overflow_dont
,/* complain_on_overflow */
261 bfd_elf_generic_reloc
, /* special_function */
262 "R_PPC_ADDR16_LO", /* name */
263 FALSE
, /* partial_inplace */
265 0xffff, /* dst_mask */
266 FALSE
), /* pcrel_offset */
268 /* The high order 16 bits of an address. */
269 HOWTO (R_PPC_ADDR16_HI
, /* type */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
273 FALSE
, /* pc_relative */
275 complain_overflow_dont
, /* complain_on_overflow */
276 bfd_elf_generic_reloc
, /* special_function */
277 "R_PPC_ADDR16_HI", /* name */
278 FALSE
, /* partial_inplace */
280 0xffff, /* dst_mask */
281 FALSE
), /* pcrel_offset */
283 /* The high order 16 bits of an address, plus 1 if the contents of
284 the low 16 bits, treated as a signed number, is negative. */
285 HOWTO (R_PPC_ADDR16_HA
, /* type */
287 1, /* size (0 = byte, 1 = short, 2 = long) */
289 FALSE
, /* pc_relative */
291 complain_overflow_dont
, /* complain_on_overflow */
292 ppc_elf_addr16_ha_reloc
, /* special_function */
293 "R_PPC_ADDR16_HA", /* name */
294 FALSE
, /* partial_inplace */
296 0xffff, /* dst_mask */
297 FALSE
), /* pcrel_offset */
299 /* An absolute 16 bit branch; the lower two bits must be zero.
300 FIXME: we don't check that, we just clear them. */
301 HOWTO (R_PPC_ADDR14
, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE
, /* pc_relative */
307 complain_overflow_signed
, /* complain_on_overflow */
308 bfd_elf_generic_reloc
, /* special_function */
309 "R_PPC_ADDR14", /* name */
310 FALSE
, /* partial_inplace */
312 0xfffc, /* dst_mask */
313 FALSE
), /* pcrel_offset */
315 /* An absolute 16 bit branch, for which bit 10 should be set to
316 indicate that the branch is expected to be taken. The lower two
317 bits must be zero. */
318 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
322 FALSE
, /* pc_relative */
324 complain_overflow_signed
, /* complain_on_overflow */
325 bfd_elf_generic_reloc
, /* special_function */
326 "R_PPC_ADDR14_BRTAKEN",/* name */
327 FALSE
, /* partial_inplace */
329 0xfffc, /* dst_mask */
330 FALSE
), /* pcrel_offset */
332 /* An absolute 16 bit branch, for which bit 10 should be set to
333 indicate that the branch is not expected to be taken. The lower
334 two bits must be zero. */
335 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE
, /* pc_relative */
341 complain_overflow_signed
, /* complain_on_overflow */
342 bfd_elf_generic_reloc
, /* special_function */
343 "R_PPC_ADDR14_BRNTAKEN",/* name */
344 FALSE
, /* partial_inplace */
346 0xfffc, /* dst_mask */
347 FALSE
), /* pcrel_offset */
349 /* A relative 26 bit branch; the lower two bits must be zero. */
350 HOWTO (R_PPC_REL24
, /* type */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
354 TRUE
, /* pc_relative */
356 complain_overflow_signed
, /* complain_on_overflow */
357 bfd_elf_generic_reloc
, /* special_function */
358 "R_PPC_REL24", /* name */
359 FALSE
, /* partial_inplace */
361 0x3fffffc, /* dst_mask */
362 TRUE
), /* pcrel_offset */
364 /* A relative 16 bit branch; the lower two bits must be zero. */
365 HOWTO (R_PPC_REL14
, /* type */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
369 TRUE
, /* pc_relative */
371 complain_overflow_signed
, /* complain_on_overflow */
372 bfd_elf_generic_reloc
, /* special_function */
373 "R_PPC_REL14", /* name */
374 FALSE
, /* partial_inplace */
376 0xfffc, /* dst_mask */
377 TRUE
), /* pcrel_offset */
379 /* A relative 16 bit branch. Bit 10 should be set to indicate that
380 the branch is expected to be taken. The lower two bits must be
382 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
386 TRUE
, /* pc_relative */
388 complain_overflow_signed
, /* complain_on_overflow */
389 bfd_elf_generic_reloc
, /* special_function */
390 "R_PPC_REL14_BRTAKEN", /* name */
391 FALSE
, /* partial_inplace */
393 0xfffc, /* dst_mask */
394 TRUE
), /* pcrel_offset */
396 /* A relative 16 bit branch. Bit 10 should be set to indicate that
397 the branch is not expected to be taken. The lower two bits must
399 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
403 TRUE
, /* pc_relative */
405 complain_overflow_signed
, /* complain_on_overflow */
406 bfd_elf_generic_reloc
, /* special_function */
407 "R_PPC_REL14_BRNTAKEN",/* name */
408 FALSE
, /* partial_inplace */
410 0xfffc, /* dst_mask */
411 TRUE
), /* pcrel_offset */
413 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
415 HOWTO (R_PPC_GOT16
, /* type */
417 1, /* size (0 = byte, 1 = short, 2 = long) */
419 FALSE
, /* pc_relative */
421 complain_overflow_signed
, /* complain_on_overflow */
422 ppc_elf_unhandled_reloc
, /* special_function */
423 "R_PPC_GOT16", /* name */
424 FALSE
, /* partial_inplace */
426 0xffff, /* dst_mask */
427 FALSE
), /* pcrel_offset */
429 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
431 HOWTO (R_PPC_GOT16_LO
, /* type */
433 1, /* size (0 = byte, 1 = short, 2 = long) */
435 FALSE
, /* pc_relative */
437 complain_overflow_dont
, /* complain_on_overflow */
438 ppc_elf_unhandled_reloc
, /* special_function */
439 "R_PPC_GOT16_LO", /* name */
440 FALSE
, /* partial_inplace */
442 0xffff, /* dst_mask */
443 FALSE
), /* pcrel_offset */
445 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
447 HOWTO (R_PPC_GOT16_HI
, /* type */
449 1, /* size (0 = byte, 1 = short, 2 = long) */
451 FALSE
, /* pc_relative */
453 complain_overflow_dont
, /* complain_on_overflow */
454 ppc_elf_unhandled_reloc
, /* special_function */
455 "R_PPC_GOT16_HI", /* name */
456 FALSE
, /* partial_inplace */
458 0xffff, /* dst_mask */
459 FALSE
), /* pcrel_offset */
461 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
463 HOWTO (R_PPC_GOT16_HA
, /* type */
465 1, /* size (0 = byte, 1 = short, 2 = long) */
467 FALSE
, /* pc_relative */
469 complain_overflow_dont
, /* complain_on_overflow */
470 ppc_elf_unhandled_reloc
, /* special_function */
471 "R_PPC_GOT16_HA", /* name */
472 FALSE
, /* partial_inplace */
474 0xffff, /* dst_mask */
475 FALSE
), /* pcrel_offset */
477 /* Like R_PPC_REL24, but referring to the procedure linkage table
478 entry for the symbol. */
479 HOWTO (R_PPC_PLTREL24
, /* type */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
483 TRUE
, /* pc_relative */
485 complain_overflow_signed
, /* complain_on_overflow */
486 ppc_elf_unhandled_reloc
, /* special_function */
487 "R_PPC_PLTREL24", /* name */
488 FALSE
, /* partial_inplace */
490 0x3fffffc, /* dst_mask */
491 TRUE
), /* pcrel_offset */
493 /* This is used only by the dynamic linker. The symbol should exist
494 both in the object being run and in some shared library. The
495 dynamic linker copies the data addressed by the symbol from the
496 shared library into the object, because the object being
497 run has to have the data at some particular address. */
498 HOWTO (R_PPC_COPY
, /* type */
500 2, /* size (0 = byte, 1 = short, 2 = long) */
502 FALSE
, /* pc_relative */
504 complain_overflow_dont
, /* complain_on_overflow */
505 ppc_elf_unhandled_reloc
, /* special_function */
506 "R_PPC_COPY", /* name */
507 FALSE
, /* partial_inplace */
510 FALSE
), /* pcrel_offset */
512 /* Like R_PPC_ADDR32, but used when setting global offset table
514 HOWTO (R_PPC_GLOB_DAT
, /* type */
516 2, /* size (0 = byte, 1 = short, 2 = long) */
518 FALSE
, /* pc_relative */
520 complain_overflow_dont
, /* complain_on_overflow */
521 ppc_elf_unhandled_reloc
, /* special_function */
522 "R_PPC_GLOB_DAT", /* name */
523 FALSE
, /* partial_inplace */
525 0xffffffff, /* dst_mask */
526 FALSE
), /* pcrel_offset */
528 /* Marks a procedure linkage table entry for a symbol. */
529 HOWTO (R_PPC_JMP_SLOT
, /* type */
531 2, /* size (0 = byte, 1 = short, 2 = long) */
533 FALSE
, /* pc_relative */
535 complain_overflow_dont
, /* complain_on_overflow */
536 ppc_elf_unhandled_reloc
, /* special_function */
537 "R_PPC_JMP_SLOT", /* name */
538 FALSE
, /* partial_inplace */
541 FALSE
), /* pcrel_offset */
543 /* Used only by the dynamic linker. When the object is run, this
544 longword is set to the load address of the object, plus the
546 HOWTO (R_PPC_RELATIVE
, /* type */
548 2, /* size (0 = byte, 1 = short, 2 = long) */
550 FALSE
, /* pc_relative */
552 complain_overflow_dont
, /* complain_on_overflow */
553 bfd_elf_generic_reloc
, /* special_function */
554 "R_PPC_RELATIVE", /* name */
555 FALSE
, /* partial_inplace */
557 0xffffffff, /* dst_mask */
558 FALSE
), /* pcrel_offset */
560 /* Like R_PPC_REL24, but uses the value of the symbol within the
561 object rather than the final value. Normally used for
562 _GLOBAL_OFFSET_TABLE_. */
563 HOWTO (R_PPC_LOCAL24PC
, /* type */
565 2, /* size (0 = byte, 1 = short, 2 = long) */
567 TRUE
, /* pc_relative */
569 complain_overflow_signed
, /* complain_on_overflow */
570 bfd_elf_generic_reloc
, /* special_function */
571 "R_PPC_LOCAL24PC", /* name */
572 FALSE
, /* partial_inplace */
574 0x3fffffc, /* dst_mask */
575 TRUE
), /* pcrel_offset */
577 /* Like R_PPC_ADDR32, but may be unaligned. */
578 HOWTO (R_PPC_UADDR32
, /* type */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
582 FALSE
, /* pc_relative */
584 complain_overflow_dont
, /* complain_on_overflow */
585 bfd_elf_generic_reloc
, /* special_function */
586 "R_PPC_UADDR32", /* name */
587 FALSE
, /* partial_inplace */
589 0xffffffff, /* dst_mask */
590 FALSE
), /* pcrel_offset */
592 /* Like R_PPC_ADDR16, but may be unaligned. */
593 HOWTO (R_PPC_UADDR16
, /* type */
595 1, /* size (0 = byte, 1 = short, 2 = long) */
597 FALSE
, /* pc_relative */
599 complain_overflow_bitfield
, /* complain_on_overflow */
600 bfd_elf_generic_reloc
, /* special_function */
601 "R_PPC_UADDR16", /* name */
602 FALSE
, /* partial_inplace */
604 0xffff, /* dst_mask */
605 FALSE
), /* pcrel_offset */
607 /* 32-bit PC relative */
608 HOWTO (R_PPC_REL32
, /* type */
610 2, /* size (0 = byte, 1 = short, 2 = long) */
612 TRUE
, /* pc_relative */
614 complain_overflow_dont
, /* complain_on_overflow */
615 bfd_elf_generic_reloc
, /* special_function */
616 "R_PPC_REL32", /* name */
617 FALSE
, /* partial_inplace */
619 0xffffffff, /* dst_mask */
620 TRUE
), /* pcrel_offset */
622 /* 32-bit relocation to the symbol's procedure linkage table.
623 FIXME: not supported. */
624 HOWTO (R_PPC_PLT32
, /* type */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
628 FALSE
, /* pc_relative */
630 complain_overflow_dont
, /* complain_on_overflow */
631 ppc_elf_unhandled_reloc
, /* special_function */
632 "R_PPC_PLT32", /* name */
633 FALSE
, /* partial_inplace */
636 FALSE
), /* pcrel_offset */
638 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
639 FIXME: not supported. */
640 HOWTO (R_PPC_PLTREL32
, /* type */
642 2, /* size (0 = byte, 1 = short, 2 = long) */
644 TRUE
, /* pc_relative */
646 complain_overflow_dont
, /* complain_on_overflow */
647 ppc_elf_unhandled_reloc
, /* special_function */
648 "R_PPC_PLTREL32", /* name */
649 FALSE
, /* partial_inplace */
652 TRUE
), /* pcrel_offset */
654 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
656 HOWTO (R_PPC_PLT16_LO
, /* type */
658 1, /* size (0 = byte, 1 = short, 2 = long) */
660 FALSE
, /* pc_relative */
662 complain_overflow_dont
, /* complain_on_overflow */
663 ppc_elf_unhandled_reloc
, /* special_function */
664 "R_PPC_PLT16_LO", /* name */
665 FALSE
, /* partial_inplace */
667 0xffff, /* dst_mask */
668 FALSE
), /* pcrel_offset */
670 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
672 HOWTO (R_PPC_PLT16_HI
, /* type */
674 1, /* size (0 = byte, 1 = short, 2 = long) */
676 FALSE
, /* pc_relative */
678 complain_overflow_dont
, /* complain_on_overflow */
679 ppc_elf_unhandled_reloc
, /* special_function */
680 "R_PPC_PLT16_HI", /* name */
681 FALSE
, /* partial_inplace */
683 0xffff, /* dst_mask */
684 FALSE
), /* pcrel_offset */
686 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
688 HOWTO (R_PPC_PLT16_HA
, /* type */
690 1, /* size (0 = byte, 1 = short, 2 = long) */
692 FALSE
, /* pc_relative */
694 complain_overflow_dont
, /* complain_on_overflow */
695 ppc_elf_unhandled_reloc
, /* special_function */
696 "R_PPC_PLT16_HA", /* name */
697 FALSE
, /* partial_inplace */
699 0xffff, /* dst_mask */
700 FALSE
), /* pcrel_offset */
702 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
704 HOWTO (R_PPC_SDAREL16
, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 FALSE
, /* pc_relative */
710 complain_overflow_signed
, /* complain_on_overflow */
711 ppc_elf_unhandled_reloc
, /* special_function */
712 "R_PPC_SDAREL16", /* name */
713 FALSE
, /* partial_inplace */
715 0xffff, /* dst_mask */
716 FALSE
), /* pcrel_offset */
718 /* 16-bit section relative relocation. */
719 HOWTO (R_PPC_SECTOFF
, /* type */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
723 FALSE
, /* pc_relative */
725 complain_overflow_signed
, /* complain_on_overflow */
726 ppc_elf_unhandled_reloc
, /* special_function */
727 "R_PPC_SECTOFF", /* name */
728 FALSE
, /* partial_inplace */
730 0xffff, /* dst_mask */
731 FALSE
), /* pcrel_offset */
733 /* 16-bit lower half section relative relocation. */
734 HOWTO (R_PPC_SECTOFF_LO
, /* type */
736 1, /* size (0 = byte, 1 = short, 2 = long) */
738 FALSE
, /* pc_relative */
740 complain_overflow_dont
, /* complain_on_overflow */
741 ppc_elf_unhandled_reloc
, /* special_function */
742 "R_PPC_SECTOFF_LO", /* name */
743 FALSE
, /* partial_inplace */
745 0xffff, /* dst_mask */
746 FALSE
), /* pcrel_offset */
748 /* 16-bit upper half section relative relocation. */
749 HOWTO (R_PPC_SECTOFF_HI
, /* type */
751 1, /* size (0 = byte, 1 = short, 2 = long) */
753 FALSE
, /* pc_relative */
755 complain_overflow_dont
, /* complain_on_overflow */
756 ppc_elf_unhandled_reloc
, /* special_function */
757 "R_PPC_SECTOFF_HI", /* name */
758 FALSE
, /* partial_inplace */
760 0xffff, /* dst_mask */
761 FALSE
), /* pcrel_offset */
763 /* 16-bit upper half adjusted section relative relocation. */
764 HOWTO (R_PPC_SECTOFF_HA
, /* type */
766 1, /* size (0 = byte, 1 = short, 2 = long) */
768 FALSE
, /* pc_relative */
770 complain_overflow_dont
, /* complain_on_overflow */
771 ppc_elf_unhandled_reloc
, /* special_function */
772 "R_PPC_SECTOFF_HA", /* name */
773 FALSE
, /* partial_inplace */
775 0xffff, /* dst_mask */
776 FALSE
), /* pcrel_offset */
778 /* Marker relocs for TLS. */
781 2, /* size (0 = byte, 1 = short, 2 = long) */
783 FALSE
, /* pc_relative */
785 complain_overflow_dont
, /* complain_on_overflow */
786 bfd_elf_generic_reloc
, /* special_function */
787 "R_PPC_TLS", /* name */
788 FALSE
, /* partial_inplace */
791 FALSE
), /* pcrel_offset */
795 2, /* size (0 = byte, 1 = short, 2 = long) */
797 FALSE
, /* pc_relative */
799 complain_overflow_dont
, /* complain_on_overflow */
800 bfd_elf_generic_reloc
, /* special_function */
801 "R_PPC_TLSGD", /* name */
802 FALSE
, /* partial_inplace */
805 FALSE
), /* pcrel_offset */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE
, /* pc_relative */
813 complain_overflow_dont
, /* complain_on_overflow */
814 bfd_elf_generic_reloc
, /* special_function */
815 "R_PPC_TLSLD", /* name */
816 FALSE
, /* partial_inplace */
819 FALSE
), /* pcrel_offset */
821 /* Computes the load module index of the load module that contains the
822 definition of its TLS sym. */
823 HOWTO (R_PPC_DTPMOD32
,
825 2, /* size (0 = byte, 1 = short, 2 = long) */
827 FALSE
, /* pc_relative */
829 complain_overflow_dont
, /* complain_on_overflow */
830 ppc_elf_unhandled_reloc
, /* special_function */
831 "R_PPC_DTPMOD32", /* name */
832 FALSE
, /* partial_inplace */
834 0xffffffff, /* dst_mask */
835 FALSE
), /* pcrel_offset */
837 /* Computes a dtv-relative displacement, the difference between the value
838 of sym+add and the base address of the thread-local storage block that
839 contains the definition of sym, minus 0x8000. */
840 HOWTO (R_PPC_DTPREL32
,
842 2, /* size (0 = byte, 1 = short, 2 = long) */
844 FALSE
, /* pc_relative */
846 complain_overflow_dont
, /* complain_on_overflow */
847 ppc_elf_unhandled_reloc
, /* special_function */
848 "R_PPC_DTPREL32", /* name */
849 FALSE
, /* partial_inplace */
851 0xffffffff, /* dst_mask */
852 FALSE
), /* pcrel_offset */
854 /* A 16 bit dtprel reloc. */
855 HOWTO (R_PPC_DTPREL16
,
857 1, /* size (0 = byte, 1 = short, 2 = long) */
859 FALSE
, /* pc_relative */
861 complain_overflow_signed
, /* complain_on_overflow */
862 ppc_elf_unhandled_reloc
, /* special_function */
863 "R_PPC_DTPREL16", /* name */
864 FALSE
, /* partial_inplace */
866 0xffff, /* dst_mask */
867 FALSE
), /* pcrel_offset */
869 /* Like DTPREL16, but no overflow. */
870 HOWTO (R_PPC_DTPREL16_LO
,
872 1, /* size (0 = byte, 1 = short, 2 = long) */
874 FALSE
, /* pc_relative */
876 complain_overflow_dont
, /* complain_on_overflow */
877 ppc_elf_unhandled_reloc
, /* special_function */
878 "R_PPC_DTPREL16_LO", /* name */
879 FALSE
, /* partial_inplace */
881 0xffff, /* dst_mask */
882 FALSE
), /* pcrel_offset */
884 /* Like DTPREL16_LO, but next higher group of 16 bits. */
885 HOWTO (R_PPC_DTPREL16_HI
,
887 1, /* size (0 = byte, 1 = short, 2 = long) */
889 FALSE
, /* pc_relative */
891 complain_overflow_dont
, /* complain_on_overflow */
892 ppc_elf_unhandled_reloc
, /* special_function */
893 "R_PPC_DTPREL16_HI", /* name */
894 FALSE
, /* partial_inplace */
896 0xffff, /* dst_mask */
897 FALSE
), /* pcrel_offset */
899 /* Like DTPREL16_HI, but adjust for low 16 bits. */
900 HOWTO (R_PPC_DTPREL16_HA
,
902 1, /* size (0 = byte, 1 = short, 2 = long) */
904 FALSE
, /* pc_relative */
906 complain_overflow_dont
, /* complain_on_overflow */
907 ppc_elf_unhandled_reloc
, /* special_function */
908 "R_PPC_DTPREL16_HA", /* name */
909 FALSE
, /* partial_inplace */
911 0xffff, /* dst_mask */
912 FALSE
), /* pcrel_offset */
914 /* Computes a tp-relative displacement, the difference between the value of
915 sym+add and the value of the thread pointer (r13). */
916 HOWTO (R_PPC_TPREL32
,
918 2, /* size (0 = byte, 1 = short, 2 = long) */
920 FALSE
, /* pc_relative */
922 complain_overflow_dont
, /* complain_on_overflow */
923 ppc_elf_unhandled_reloc
, /* special_function */
924 "R_PPC_TPREL32", /* name */
925 FALSE
, /* partial_inplace */
927 0xffffffff, /* dst_mask */
928 FALSE
), /* pcrel_offset */
930 /* A 16 bit tprel reloc. */
931 HOWTO (R_PPC_TPREL16
,
933 1, /* size (0 = byte, 1 = short, 2 = long) */
935 FALSE
, /* pc_relative */
937 complain_overflow_signed
, /* complain_on_overflow */
938 ppc_elf_unhandled_reloc
, /* special_function */
939 "R_PPC_TPREL16", /* name */
940 FALSE
, /* partial_inplace */
942 0xffff, /* dst_mask */
943 FALSE
), /* pcrel_offset */
945 /* Like TPREL16, but no overflow. */
946 HOWTO (R_PPC_TPREL16_LO
,
948 1, /* size (0 = byte, 1 = short, 2 = long) */
950 FALSE
, /* pc_relative */
952 complain_overflow_dont
, /* complain_on_overflow */
953 ppc_elf_unhandled_reloc
, /* special_function */
954 "R_PPC_TPREL16_LO", /* name */
955 FALSE
, /* partial_inplace */
957 0xffff, /* dst_mask */
958 FALSE
), /* pcrel_offset */
960 /* Like TPREL16_LO, but next higher group of 16 bits. */
961 HOWTO (R_PPC_TPREL16_HI
,
963 1, /* size (0 = byte, 1 = short, 2 = long) */
965 FALSE
, /* pc_relative */
967 complain_overflow_dont
, /* complain_on_overflow */
968 ppc_elf_unhandled_reloc
, /* special_function */
969 "R_PPC_TPREL16_HI", /* name */
970 FALSE
, /* partial_inplace */
972 0xffff, /* dst_mask */
973 FALSE
), /* pcrel_offset */
975 /* Like TPREL16_HI, but adjust for low 16 bits. */
976 HOWTO (R_PPC_TPREL16_HA
,
978 1, /* size (0 = byte, 1 = short, 2 = long) */
980 FALSE
, /* pc_relative */
982 complain_overflow_dont
, /* complain_on_overflow */
983 ppc_elf_unhandled_reloc
, /* special_function */
984 "R_PPC_TPREL16_HA", /* name */
985 FALSE
, /* partial_inplace */
987 0xffff, /* dst_mask */
988 FALSE
), /* pcrel_offset */
990 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
991 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
992 to the first entry. */
993 HOWTO (R_PPC_GOT_TLSGD16
,
995 1, /* size (0 = byte, 1 = short, 2 = long) */
997 FALSE
, /* pc_relative */
999 complain_overflow_signed
, /* complain_on_overflow */
1000 ppc_elf_unhandled_reloc
, /* special_function */
1001 "R_PPC_GOT_TLSGD16", /* name */
1002 FALSE
, /* partial_inplace */
1004 0xffff, /* dst_mask */
1005 FALSE
), /* pcrel_offset */
1007 /* Like GOT_TLSGD16, but no overflow. */
1008 HOWTO (R_PPC_GOT_TLSGD16_LO
,
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 FALSE
, /* pc_relative */
1014 complain_overflow_dont
, /* complain_on_overflow */
1015 ppc_elf_unhandled_reloc
, /* special_function */
1016 "R_PPC_GOT_TLSGD16_LO", /* name */
1017 FALSE
, /* partial_inplace */
1019 0xffff, /* dst_mask */
1020 FALSE
), /* pcrel_offset */
1022 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1023 HOWTO (R_PPC_GOT_TLSGD16_HI
,
1024 16, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1027 FALSE
, /* pc_relative */
1029 complain_overflow_dont
, /* complain_on_overflow */
1030 ppc_elf_unhandled_reloc
, /* special_function */
1031 "R_PPC_GOT_TLSGD16_HI", /* name */
1032 FALSE
, /* partial_inplace */
1034 0xffff, /* dst_mask */
1035 FALSE
), /* pcrel_offset */
1037 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1038 HOWTO (R_PPC_GOT_TLSGD16_HA
,
1039 16, /* rightshift */
1040 1, /* size (0 = byte, 1 = short, 2 = long) */
1042 FALSE
, /* pc_relative */
1044 complain_overflow_dont
, /* complain_on_overflow */
1045 ppc_elf_unhandled_reloc
, /* special_function */
1046 "R_PPC_GOT_TLSGD16_HA", /* name */
1047 FALSE
, /* partial_inplace */
1049 0xffff, /* dst_mask */
1050 FALSE
), /* pcrel_offset */
1052 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1053 with values (sym+add)@dtpmod and zero, and computes the offset to the
1055 HOWTO (R_PPC_GOT_TLSLD16
,
1057 1, /* size (0 = byte, 1 = short, 2 = long) */
1059 FALSE
, /* pc_relative */
1061 complain_overflow_signed
, /* complain_on_overflow */
1062 ppc_elf_unhandled_reloc
, /* special_function */
1063 "R_PPC_GOT_TLSLD16", /* name */
1064 FALSE
, /* partial_inplace */
1066 0xffff, /* dst_mask */
1067 FALSE
), /* pcrel_offset */
1069 /* Like GOT_TLSLD16, but no overflow. */
1070 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1072 1, /* size (0 = byte, 1 = short, 2 = long) */
1074 FALSE
, /* pc_relative */
1076 complain_overflow_dont
, /* complain_on_overflow */
1077 ppc_elf_unhandled_reloc
, /* special_function */
1078 "R_PPC_GOT_TLSLD16_LO", /* name */
1079 FALSE
, /* partial_inplace */
1081 0xffff, /* dst_mask */
1082 FALSE
), /* pcrel_offset */
1084 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1085 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1086 16, /* rightshift */
1087 1, /* size (0 = byte, 1 = short, 2 = long) */
1089 FALSE
, /* pc_relative */
1091 complain_overflow_dont
, /* complain_on_overflow */
1092 ppc_elf_unhandled_reloc
, /* special_function */
1093 "R_PPC_GOT_TLSLD16_HI", /* name */
1094 FALSE
, /* partial_inplace */
1096 0xffff, /* dst_mask */
1097 FALSE
), /* pcrel_offset */
1099 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1100 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1101 16, /* rightshift */
1102 1, /* size (0 = byte, 1 = short, 2 = long) */
1104 FALSE
, /* pc_relative */
1106 complain_overflow_dont
, /* complain_on_overflow */
1107 ppc_elf_unhandled_reloc
, /* special_function */
1108 "R_PPC_GOT_TLSLD16_HA", /* name */
1109 FALSE
, /* partial_inplace */
1111 0xffff, /* dst_mask */
1112 FALSE
), /* pcrel_offset */
1114 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1115 the offset to the entry. */
1116 HOWTO (R_PPC_GOT_DTPREL16
,
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1120 FALSE
, /* pc_relative */
1122 complain_overflow_signed
, /* complain_on_overflow */
1123 ppc_elf_unhandled_reloc
, /* special_function */
1124 "R_PPC_GOT_DTPREL16", /* name */
1125 FALSE
, /* partial_inplace */
1127 0xffff, /* dst_mask */
1128 FALSE
), /* pcrel_offset */
1130 /* Like GOT_DTPREL16, but no overflow. */
1131 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1135 FALSE
, /* pc_relative */
1137 complain_overflow_dont
, /* complain_on_overflow */
1138 ppc_elf_unhandled_reloc
, /* special_function */
1139 "R_PPC_GOT_DTPREL16_LO", /* name */
1140 FALSE
, /* partial_inplace */
1142 0xffff, /* dst_mask */
1143 FALSE
), /* pcrel_offset */
1145 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1146 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1147 16, /* rightshift */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1150 FALSE
, /* pc_relative */
1152 complain_overflow_dont
, /* complain_on_overflow */
1153 ppc_elf_unhandled_reloc
, /* special_function */
1154 "R_PPC_GOT_DTPREL16_HI", /* name */
1155 FALSE
, /* partial_inplace */
1157 0xffff, /* dst_mask */
1158 FALSE
), /* pcrel_offset */
1160 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1161 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1162 16, /* rightshift */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1165 FALSE
, /* pc_relative */
1167 complain_overflow_dont
, /* complain_on_overflow */
1168 ppc_elf_unhandled_reloc
, /* special_function */
1169 "R_PPC_GOT_DTPREL16_HA", /* name */
1170 FALSE
, /* partial_inplace */
1172 0xffff, /* dst_mask */
1173 FALSE
), /* pcrel_offset */
1175 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1176 offset to the entry. */
1177 HOWTO (R_PPC_GOT_TPREL16
,
1179 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 FALSE
, /* pc_relative */
1183 complain_overflow_signed
, /* complain_on_overflow */
1184 ppc_elf_unhandled_reloc
, /* special_function */
1185 "R_PPC_GOT_TPREL16", /* name */
1186 FALSE
, /* partial_inplace */
1188 0xffff, /* dst_mask */
1189 FALSE
), /* pcrel_offset */
1191 /* Like GOT_TPREL16, but no overflow. */
1192 HOWTO (R_PPC_GOT_TPREL16_LO
,
1194 1, /* size (0 = byte, 1 = short, 2 = long) */
1196 FALSE
, /* pc_relative */
1198 complain_overflow_dont
, /* complain_on_overflow */
1199 ppc_elf_unhandled_reloc
, /* special_function */
1200 "R_PPC_GOT_TPREL16_LO", /* name */
1201 FALSE
, /* partial_inplace */
1203 0xffff, /* dst_mask */
1204 FALSE
), /* pcrel_offset */
1206 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1207 HOWTO (R_PPC_GOT_TPREL16_HI
,
1208 16, /* rightshift */
1209 1, /* size (0 = byte, 1 = short, 2 = long) */
1211 FALSE
, /* pc_relative */
1213 complain_overflow_dont
, /* complain_on_overflow */
1214 ppc_elf_unhandled_reloc
, /* special_function */
1215 "R_PPC_GOT_TPREL16_HI", /* name */
1216 FALSE
, /* partial_inplace */
1218 0xffff, /* dst_mask */
1219 FALSE
), /* pcrel_offset */
1221 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1222 HOWTO (R_PPC_GOT_TPREL16_HA
,
1223 16, /* rightshift */
1224 1, /* size (0 = byte, 1 = short, 2 = long) */
1226 FALSE
, /* pc_relative */
1228 complain_overflow_dont
, /* complain_on_overflow */
1229 ppc_elf_unhandled_reloc
, /* special_function */
1230 "R_PPC_GOT_TPREL16_HA", /* name */
1231 FALSE
, /* partial_inplace */
1233 0xffff, /* dst_mask */
1234 FALSE
), /* pcrel_offset */
1236 /* The remaining relocs are from the Embedded ELF ABI, and are not
1237 in the SVR4 ELF ABI. */
1239 /* 32 bit value resulting from the addend minus the symbol. */
1240 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 FALSE
, /* pc_relative */
1246 complain_overflow_dont
, /* complain_on_overflow */
1247 ppc_elf_unhandled_reloc
, /* special_function */
1248 "R_PPC_EMB_NADDR32", /* name */
1249 FALSE
, /* partial_inplace */
1251 0xffffffff, /* dst_mask */
1252 FALSE
), /* pcrel_offset */
1254 /* 16 bit value resulting from the addend minus the symbol. */
1255 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1257 1, /* size (0 = byte, 1 = short, 2 = long) */
1259 FALSE
, /* pc_relative */
1261 complain_overflow_signed
, /* complain_on_overflow */
1262 ppc_elf_unhandled_reloc
, /* special_function */
1263 "R_PPC_EMB_NADDR16", /* name */
1264 FALSE
, /* partial_inplace */
1266 0xffff, /* dst_mask */
1267 FALSE
), /* pcrel_offset */
1269 /* 16 bit value resulting from the addend minus the symbol. */
1270 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1272 1, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE
, /* pc_relative */
1276 complain_overflow_dont
,/* complain_on_overflow */
1277 ppc_elf_unhandled_reloc
, /* special_function */
1278 "R_PPC_EMB_ADDR16_LO", /* name */
1279 FALSE
, /* partial_inplace */
1281 0xffff, /* dst_mask */
1282 FALSE
), /* pcrel_offset */
1284 /* The high order 16 bits of the addend minus the symbol. */
1285 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1286 16, /* rightshift */
1287 1, /* size (0 = byte, 1 = short, 2 = long) */
1289 FALSE
, /* pc_relative */
1291 complain_overflow_dont
, /* complain_on_overflow */
1292 ppc_elf_unhandled_reloc
, /* special_function */
1293 "R_PPC_EMB_NADDR16_HI", /* name */
1294 FALSE
, /* partial_inplace */
1296 0xffff, /* dst_mask */
1297 FALSE
), /* pcrel_offset */
1299 /* The high order 16 bits of the result of the addend minus the address,
1300 plus 1 if the contents of the low 16 bits, treated as a signed number,
1302 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1303 16, /* rightshift */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 FALSE
, /* pc_relative */
1308 complain_overflow_dont
, /* complain_on_overflow */
1309 ppc_elf_unhandled_reloc
, /* special_function */
1310 "R_PPC_EMB_NADDR16_HA", /* name */
1311 FALSE
, /* partial_inplace */
1313 0xffff, /* dst_mask */
1314 FALSE
), /* pcrel_offset */
1316 /* 16 bit value resulting from allocating a 4 byte word to hold an
1317 address in the .sdata section, and returning the offset from
1318 _SDA_BASE_ for that relocation. */
1319 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1323 FALSE
, /* pc_relative */
1325 complain_overflow_signed
, /* complain_on_overflow */
1326 ppc_elf_unhandled_reloc
, /* special_function */
1327 "R_PPC_EMB_SDAI16", /* name */
1328 FALSE
, /* partial_inplace */
1330 0xffff, /* dst_mask */
1331 FALSE
), /* pcrel_offset */
1333 /* 16 bit value resulting from allocating a 4 byte word to hold an
1334 address in the .sdata2 section, and returning the offset from
1335 _SDA2_BASE_ for that relocation. */
1336 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1338 1, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE
, /* pc_relative */
1342 complain_overflow_signed
, /* complain_on_overflow */
1343 ppc_elf_unhandled_reloc
, /* special_function */
1344 "R_PPC_EMB_SDA2I16", /* name */
1345 FALSE
, /* partial_inplace */
1347 0xffff, /* dst_mask */
1348 FALSE
), /* pcrel_offset */
1350 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1351 small data items. */
1352 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE
, /* pc_relative */
1358 complain_overflow_signed
, /* complain_on_overflow */
1359 ppc_elf_unhandled_reloc
, /* special_function */
1360 "R_PPC_EMB_SDA2REL", /* name */
1361 FALSE
, /* partial_inplace */
1363 0xffff, /* dst_mask */
1364 FALSE
), /* pcrel_offset */
1366 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1367 signed offset from the appropriate base, and filling in the register
1368 field with the appropriate register (0, 2, or 13). */
1369 HOWTO (R_PPC_EMB_SDA21
, /* type */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_signed
, /* complain_on_overflow */
1376 ppc_elf_unhandled_reloc
, /* special_function */
1377 "R_PPC_EMB_SDA21", /* name */
1378 FALSE
, /* partial_inplace */
1380 0xffff, /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 /* Relocation not handled: R_PPC_EMB_MRKREF */
1384 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1385 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1386 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1387 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1388 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1390 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1391 in the 16 bit signed offset from the appropriate base, and filling in the
1392 register field with the appropriate register (0, 2, or 13). */
1393 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE
, /* pc_relative */
1399 complain_overflow_signed
, /* complain_on_overflow */
1400 ppc_elf_unhandled_reloc
, /* special_function */
1401 "R_PPC_EMB_RELSDA", /* name */
1402 FALSE
, /* partial_inplace */
1404 0xffff, /* dst_mask */
1405 FALSE
), /* pcrel_offset */
1407 /* A relative 8 bit branch. */
1408 HOWTO (R_PPC_VLE_REL8
, /* type */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 TRUE
, /* pc_relative */
1414 complain_overflow_signed
, /* complain_on_overflow */
1415 bfd_elf_generic_reloc
, /* special_function */
1416 "R_PPC_VLE_REL8", /* name */
1417 FALSE
, /* partial_inplace */
1419 0xff, /* dst_mask */
1420 TRUE
), /* pcrel_offset */
1422 /* A relative 15 bit branch. */
1423 HOWTO (R_PPC_VLE_REL15
, /* type */
1425 2, /* size (0 = byte, 1 = short, 2 = long) */
1427 TRUE
, /* pc_relative */
1429 complain_overflow_signed
, /* complain_on_overflow */
1430 bfd_elf_generic_reloc
, /* special_function */
1431 "R_PPC_VLE_REL15", /* name */
1432 FALSE
, /* partial_inplace */
1434 0xfffe, /* dst_mask */
1435 TRUE
), /* pcrel_offset */
1437 /* A relative 24 bit branch. */
1438 HOWTO (R_PPC_VLE_REL24
, /* type */
1440 2, /* size (0 = byte, 1 = short, 2 = long) */
1442 TRUE
, /* pc_relative */
1444 complain_overflow_signed
, /* complain_on_overflow */
1445 bfd_elf_generic_reloc
, /* special_function */
1446 "R_PPC_VLE_REL24", /* name */
1447 FALSE
, /* partial_inplace */
1449 0x1fffffe, /* dst_mask */
1450 TRUE
), /* pcrel_offset */
1452 /* The 16 LSBS in split16a format. */
1453 HOWTO (R_PPC_VLE_LO16A
, /* type */
1455 2, /* size (0 = byte, 1 = short, 2 = long) */
1457 FALSE
, /* pc_relative */
1459 complain_overflow_dont
, /* complain_on_overflow */
1460 ppc_elf_unhandled_reloc
, /* special_function */
1461 "R_PPC_VLE_LO16A", /* name */
1462 FALSE
, /* partial_inplace */
1464 0x1f07ff, /* dst_mask */
1465 FALSE
), /* pcrel_offset */
1467 /* The 16 LSBS in split16d format. */
1468 HOWTO (R_PPC_VLE_LO16D
, /* type */
1470 2, /* size (0 = byte, 1 = short, 2 = long) */
1472 FALSE
, /* pc_relative */
1474 complain_overflow_dont
, /* complain_on_overflow */
1475 ppc_elf_unhandled_reloc
, /* special_function */
1476 "R_PPC_VLE_LO16D", /* name */
1477 FALSE
, /* partial_inplace */
1479 0x3e007ff, /* dst_mask */
1480 FALSE
), /* pcrel_offset */
1482 /* Bits 16-31 split16a format. */
1483 HOWTO (R_PPC_VLE_HI16A
, /* type */
1484 16, /* rightshift */
1485 2, /* size (0 = byte, 1 = short, 2 = long) */
1487 FALSE
, /* pc_relative */
1489 complain_overflow_dont
, /* complain_on_overflow */
1490 ppc_elf_unhandled_reloc
, /* special_function */
1491 "R_PPC_VLE_HI16A", /* name */
1492 FALSE
, /* partial_inplace */
1494 0x1f07ff, /* dst_mask */
1495 FALSE
), /* pcrel_offset */
1497 /* Bits 16-31 split16d format. */
1498 HOWTO (R_PPC_VLE_HI16D
, /* type */
1499 16, /* rightshift */
1500 2, /* size (0 = byte, 1 = short, 2 = long) */
1502 FALSE
, /* pc_relative */
1504 complain_overflow_dont
, /* complain_on_overflow */
1505 ppc_elf_unhandled_reloc
, /* special_function */
1506 "R_PPC_VLE_HI16D", /* name */
1507 FALSE
, /* partial_inplace */
1509 0x3e007ff, /* dst_mask */
1510 FALSE
), /* pcrel_offset */
1512 /* Bits 16-31 (High Adjusted) in split16a format. */
1513 HOWTO (R_PPC_VLE_HA16A
, /* type */
1514 16, /* rightshift */
1515 2, /* size (0 = byte, 1 = short, 2 = long) */
1517 FALSE
, /* pc_relative */
1519 complain_overflow_dont
, /* complain_on_overflow */
1520 ppc_elf_unhandled_reloc
, /* special_function */
1521 "R_PPC_VLE_HA16A", /* name */
1522 FALSE
, /* partial_inplace */
1524 0x1f07ff, /* dst_mask */
1525 FALSE
), /* pcrel_offset */
1527 /* Bits 16-31 (High Adjusted) in split16d format. */
1528 HOWTO (R_PPC_VLE_HA16D
, /* type */
1529 16, /* rightshift */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1532 FALSE
, /* pc_relative */
1534 complain_overflow_dont
, /* complain_on_overflow */
1535 ppc_elf_unhandled_reloc
, /* special_function */
1536 "R_PPC_VLE_HA16D", /* name */
1537 FALSE
, /* partial_inplace */
1539 0x3e007ff, /* dst_mask */
1540 FALSE
), /* pcrel_offset */
1542 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1543 instructions. If the register base is 0 then the linker changes
1544 the e_add16i to an e_li instruction. */
1545 HOWTO (R_PPC_VLE_SDA21
, /* type */
1547 2, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE
, /* pc_relative */
1551 complain_overflow_signed
, /* complain_on_overflow */
1552 ppc_elf_unhandled_reloc
, /* special_function */
1553 "R_PPC_VLE_SDA21", /* name */
1554 FALSE
, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE
), /* pcrel_offset */
1559 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1560 HOWTO (R_PPC_VLE_SDA21_LO
, /* type */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE
, /* pc_relative */
1566 complain_overflow_dont
, /* complain_on_overflow */
1567 ppc_elf_unhandled_reloc
, /* special_function */
1568 "R_PPC_VLE_SDA21_LO", /* name */
1569 FALSE
, /* partial_inplace */
1571 0xffff, /* dst_mask */
1572 FALSE
), /* pcrel_offset */
1574 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1575 HOWTO (R_PPC_VLE_SDAREL_LO16A
,/* type */
1577 2, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE
, /* pc_relative */
1581 complain_overflow_dont
, /* complain_on_overflow */
1582 ppc_elf_unhandled_reloc
, /* special_function */
1583 "R_PPC_VLE_SDAREL_LO16A", /* name */
1584 FALSE
, /* partial_inplace */
1586 0x1f07ff, /* dst_mask */
1587 FALSE
), /* pcrel_offset */
1589 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1590 HOWTO (R_PPC_VLE_SDAREL_LO16D
, /* type */
1592 2, /* size (0 = byte, 1 = short, 2 = long) */
1594 FALSE
, /* pc_relative */
1596 complain_overflow_dont
, /* complain_on_overflow */
1597 ppc_elf_unhandled_reloc
, /* special_function */
1598 "R_PPC_VLE_SDAREL_LO16D", /* name */
1599 FALSE
, /* partial_inplace */
1601 0x3e007ff, /* dst_mask */
1602 FALSE
), /* pcrel_offset */
1604 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1605 HOWTO (R_PPC_VLE_SDAREL_HI16A
, /* type */
1606 16, /* rightshift */
1607 2, /* size (0 = byte, 1 = short, 2 = long) */
1609 FALSE
, /* pc_relative */
1611 complain_overflow_dont
, /* complain_on_overflow */
1612 ppc_elf_unhandled_reloc
, /* special_function */
1613 "R_PPC_VLE_SDAREL_HI16A", /* name */
1614 FALSE
, /* partial_inplace */
1616 0x1f07ff, /* dst_mask */
1617 FALSE
), /* pcrel_offset */
1619 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1620 HOWTO (R_PPC_VLE_SDAREL_HI16D
, /* type */
1621 16, /* rightshift */
1622 2, /* size (0 = byte, 1 = short, 2 = long) */
1624 FALSE
, /* pc_relative */
1626 complain_overflow_dont
, /* complain_on_overflow */
1627 ppc_elf_unhandled_reloc
, /* special_function */
1628 "R_PPC_VLE_SDAREL_HI16D", /* name */
1629 FALSE
, /* partial_inplace */
1631 0x3e007ff, /* dst_mask */
1632 FALSE
), /* pcrel_offset */
1634 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1635 HOWTO (R_PPC_VLE_SDAREL_HA16A
, /* type */
1636 16, /* rightshift */
1637 2, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE
, /* pc_relative */
1641 complain_overflow_dont
, /* complain_on_overflow */
1642 ppc_elf_unhandled_reloc
, /* special_function */
1643 "R_PPC_VLE_SDAREL_HA16A", /* name */
1644 FALSE
, /* partial_inplace */
1646 0x1f07ff, /* dst_mask */
1647 FALSE
), /* pcrel_offset */
1649 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1650 HOWTO (R_PPC_VLE_SDAREL_HA16D
, /* type */
1651 16, /* rightshift */
1652 2, /* size (0 = byte, 1 = short, 2 = long) */
1654 FALSE
, /* pc_relative */
1656 complain_overflow_dont
, /* complain_on_overflow */
1657 ppc_elf_unhandled_reloc
, /* special_function */
1658 "R_PPC_VLE_SDAREL_HA16D", /* name */
1659 FALSE
, /* partial_inplace */
1661 0x3e007ff, /* dst_mask */
1662 FALSE
), /* pcrel_offset */
1664 /* e_li split20 format. */
1665 HOWTO (R_PPC_VLE_ADDR20
, /* type */
1666 16, /* rightshift */
1667 2, /* size (0 = byte, 1 = short, 2 = long) */
1669 FALSE
, /* pc_relative */
1671 complain_overflow_dont
, /* complain_on_overflow */
1672 bfd_elf_generic_reloc
, /* special_function */
1673 "R_PPC_VLE_ADDR20", /* name */
1674 FALSE
, /* partial_inplace */
1676 0x1f07ff, /* dst_mask */
1677 FALSE
), /* pcrel_offset */
1679 HOWTO (R_PPC_IRELATIVE
, /* type */
1681 2, /* size (0 = byte, 1 = short, 2 = long) */
1683 FALSE
, /* pc_relative */
1685 complain_overflow_dont
, /* complain_on_overflow */
1686 ppc_elf_unhandled_reloc
, /* special_function */
1687 "R_PPC_IRELATIVE", /* name */
1688 FALSE
, /* partial_inplace */
1690 0xffffffff, /* dst_mask */
1691 FALSE
), /* pcrel_offset */
1693 /* A 16 bit relative relocation. */
1694 HOWTO (R_PPC_REL16
, /* type */
1696 1, /* size (0 = byte, 1 = short, 2 = long) */
1698 TRUE
, /* pc_relative */
1700 complain_overflow_signed
, /* complain_on_overflow */
1701 bfd_elf_generic_reloc
, /* special_function */
1702 "R_PPC_REL16", /* name */
1703 FALSE
, /* partial_inplace */
1705 0xffff, /* dst_mask */
1706 TRUE
), /* pcrel_offset */
1708 /* A 16 bit relative relocation without overflow. */
1709 HOWTO (R_PPC_REL16_LO
, /* type */
1711 1, /* size (0 = byte, 1 = short, 2 = long) */
1713 TRUE
, /* pc_relative */
1715 complain_overflow_dont
,/* complain_on_overflow */
1716 bfd_elf_generic_reloc
, /* special_function */
1717 "R_PPC_REL16_LO", /* name */
1718 FALSE
, /* partial_inplace */
1720 0xffff, /* dst_mask */
1721 TRUE
), /* pcrel_offset */
1723 /* The high order 16 bits of a relative address. */
1724 HOWTO (R_PPC_REL16_HI
, /* type */
1725 16, /* rightshift */
1726 1, /* size (0 = byte, 1 = short, 2 = long) */
1728 TRUE
, /* pc_relative */
1730 complain_overflow_dont
, /* complain_on_overflow */
1731 bfd_elf_generic_reloc
, /* special_function */
1732 "R_PPC_REL16_HI", /* name */
1733 FALSE
, /* partial_inplace */
1735 0xffff, /* dst_mask */
1736 TRUE
), /* pcrel_offset */
1738 /* The high order 16 bits of a relative address, plus 1 if the contents of
1739 the low 16 bits, treated as a signed number, is negative. */
1740 HOWTO (R_PPC_REL16_HA
, /* type */
1741 16, /* rightshift */
1742 1, /* size (0 = byte, 1 = short, 2 = long) */
1744 TRUE
, /* pc_relative */
1746 complain_overflow_dont
, /* complain_on_overflow */
1747 ppc_elf_addr16_ha_reloc
, /* special_function */
1748 "R_PPC_REL16_HA", /* name */
1749 FALSE
, /* partial_inplace */
1751 0xffff, /* dst_mask */
1752 TRUE
), /* pcrel_offset */
1754 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1755 HOWTO (R_PPC_REL16DX_HA
, /* type */
1756 16, /* rightshift */
1757 2, /* size (0 = byte, 1 = short, 2 = long) */
1759 TRUE
, /* pc_relative */
1761 complain_overflow_signed
, /* complain_on_overflow */
1762 ppc_elf_addr16_ha_reloc
, /* special_function */
1763 "R_PPC_REL16DX_HA", /* name */
1764 FALSE
, /* partial_inplace */
1766 0x1fffc1, /* dst_mask */
1767 TRUE
), /* pcrel_offset */
1769 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1770 HOWTO (R_PPC_16DX_HA
, /* type */
1771 16, /* rightshift */
1772 2, /* size (0 = byte, 1 = short, 2 = long) */
1774 FALSE
, /* pc_relative */
1776 complain_overflow_signed
, /* complain_on_overflow */
1777 ppc_elf_addr16_ha_reloc
, /* special_function */
1778 "R_PPC_16DX_HA", /* name */
1779 FALSE
, /* partial_inplace */
1781 0x1fffc1, /* dst_mask */
1782 FALSE
), /* pcrel_offset */
1784 /* GNU extension to record C++ vtable hierarchy. */
1785 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1787 0, /* size (0 = byte, 1 = short, 2 = long) */
1789 FALSE
, /* pc_relative */
1791 complain_overflow_dont
, /* complain_on_overflow */
1792 NULL
, /* special_function */
1793 "R_PPC_GNU_VTINHERIT", /* name */
1794 FALSE
, /* partial_inplace */
1797 FALSE
), /* pcrel_offset */
1799 /* GNU extension to record C++ vtable member usage. */
1800 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1802 0, /* size (0 = byte, 1 = short, 2 = long) */
1804 FALSE
, /* pc_relative */
1806 complain_overflow_dont
, /* complain_on_overflow */
1807 NULL
, /* special_function */
1808 "R_PPC_GNU_VTENTRY", /* name */
1809 FALSE
, /* partial_inplace */
1812 FALSE
), /* pcrel_offset */
1814 /* Phony reloc to handle AIX style TOC entries. */
1815 HOWTO (R_PPC_TOC16
, /* type */
1817 1, /* size (0 = byte, 1 = short, 2 = long) */
1819 FALSE
, /* pc_relative */
1821 complain_overflow_signed
, /* complain_on_overflow */
1822 ppc_elf_unhandled_reloc
, /* special_function */
1823 "R_PPC_TOC16", /* name */
1824 FALSE
, /* partial_inplace */
1826 0xffff, /* dst_mask */
1827 FALSE
), /* pcrel_offset */
1830 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1833 ppc_elf_howto_init (void)
1835 unsigned int i
, type
;
1838 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1841 type
= ppc_elf_howto_raw
[i
].type
;
1842 if (type
>= (sizeof (ppc_elf_howto_table
)
1843 / sizeof (ppc_elf_howto_table
[0])))
1845 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1849 static reloc_howto_type
*
1850 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1851 bfd_reloc_code_real_type code
)
1853 enum elf_ppc_reloc_type r
;
1855 /* Initialize howto table if not already done. */
1856 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1857 ppc_elf_howto_init ();
1864 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
1865 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
1866 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
1867 case BFD_RELOC_PPC64_ADDR16_DS
:
1868 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
1869 case BFD_RELOC_PPC64_ADDR16_LO_DS
:
1870 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
1871 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
1872 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
1873 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
1874 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
1875 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
1876 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
1877 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
1878 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
1879 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
1880 case BFD_RELOC_PPC64_GOT16_DS
:
1881 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
1882 case BFD_RELOC_PPC64_GOT16_LO_DS
:
1883 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
1884 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
1885 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
1886 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
1887 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
1888 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
1889 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
1890 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
1891 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
1892 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
1893 case BFD_RELOC_PPC64_PLT16_LO_DS
:
1894 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
1895 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
1896 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
1897 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
1898 case BFD_RELOC_PPC64_SECTOFF_DS
:
1899 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
1900 case BFD_RELOC_PPC64_SECTOFF_LO_DS
:
1901 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
1902 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
1903 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
1904 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
1905 case BFD_RELOC_PPC64_TOC16_DS
:
1906 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
1907 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
1908 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC_TLSGD
; break;
1909 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC_TLSLD
; break;
1910 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
1911 case BFD_RELOC_PPC64_TPREL16_DS
:
1912 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
1913 case BFD_RELOC_PPC64_TPREL16_LO_DS
:
1914 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
1915 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
1916 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
1917 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
1918 case BFD_RELOC_PPC64_DTPREL16_DS
:
1919 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
1920 case BFD_RELOC_PPC64_DTPREL16_LO_DS
:
1921 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
1922 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
1923 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
1924 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
1925 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
1926 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
1929 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
1930 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
1933 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
1934 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
1937 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
1938 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
1941 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
1942 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
1943 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
1946 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
1947 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
1948 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
1949 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
1950 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
1951 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
1952 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
1953 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
1954 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
1955 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
1956 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
1957 case BFD_RELOC_PPC_VLE_REL8
: r
= R_PPC_VLE_REL8
; break;
1958 case BFD_RELOC_PPC_VLE_REL15
: r
= R_PPC_VLE_REL15
; break;
1959 case BFD_RELOC_PPC_VLE_REL24
: r
= R_PPC_VLE_REL24
; break;
1960 case BFD_RELOC_PPC_VLE_LO16A
: r
= R_PPC_VLE_LO16A
; break;
1961 case BFD_RELOC_PPC_VLE_LO16D
: r
= R_PPC_VLE_LO16D
; break;
1962 case BFD_RELOC_PPC_VLE_HI16A
: r
= R_PPC_VLE_HI16A
; break;
1963 case BFD_RELOC_PPC_VLE_HI16D
: r
= R_PPC_VLE_HI16D
; break;
1964 case BFD_RELOC_PPC_VLE_HA16A
: r
= R_PPC_VLE_HA16A
; break;
1965 case BFD_RELOC_PPC_VLE_HA16D
: r
= R_PPC_VLE_HA16D
; break;
1966 case BFD_RELOC_PPC_VLE_SDA21
: r
= R_PPC_VLE_SDA21
; break;
1967 case BFD_RELOC_PPC_VLE_SDA21_LO
: r
= R_PPC_VLE_SDA21_LO
; break;
1968 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
1969 r
= R_PPC_VLE_SDAREL_LO16A
;
1971 case BFD_RELOC_PPC_VLE_SDAREL_LO16D
:
1972 r
= R_PPC_VLE_SDAREL_LO16D
;
1974 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
1975 r
= R_PPC_VLE_SDAREL_HI16A
;
1977 case BFD_RELOC_PPC_VLE_SDAREL_HI16D
:
1978 r
= R_PPC_VLE_SDAREL_HI16D
;
1980 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
1981 r
= R_PPC_VLE_SDAREL_HA16A
;
1983 case BFD_RELOC_PPC_VLE_SDAREL_HA16D
:
1984 r
= R_PPC_VLE_SDAREL_HA16D
;
1986 case BFD_RELOC_16_PCREL
: r
= R_PPC_REL16
; break;
1987 case BFD_RELOC_LO16_PCREL
: r
= R_PPC_REL16_LO
; break;
1988 case BFD_RELOC_HI16_PCREL
: r
= R_PPC_REL16_HI
; break;
1989 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC_REL16_HA
; break;
1990 case BFD_RELOC_PPC_16DX_HA
: r
= R_PPC_16DX_HA
; break;
1991 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC_REL16DX_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
,
2020 Elf_Internal_Rela
*dst
)
2022 unsigned int r_type
;
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
2026 ppc_elf_howto_init ();
2028 r_type
= ELF32_R_TYPE (dst
->r_info
);
2029 if (r_type
>= R_PPC_max
)
2031 /* xgettext:c-format */
2032 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2034 bfd_set_error (bfd_error_bad_value
);
2038 cache_ptr
->howto
= ppc_elf_howto_table
[r_type
];
2040 /* Just because the above assert didn't trigger doesn't mean that
2041 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2042 if (cache_ptr
->howto
== NULL
)
2044 /* xgettext:c-format */
2045 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2047 bfd_set_error (bfd_error_bad_value
);
2055 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2057 static bfd_reloc_status_type
2058 ppc_elf_addr16_ha_reloc (bfd
*abfd
,
2059 arelent
*reloc_entry
,
2062 asection
*input_section
,
2064 char **error_message ATTRIBUTE_UNUSED
)
2066 enum elf_ppc_reloc_type r_type
;
2068 bfd_size_type octets
;
2071 if (output_bfd
!= NULL
)
2073 reloc_entry
->address
+= input_section
->output_offset
;
2074 return bfd_reloc_ok
;
2077 reloc_entry
->addend
+= 0x8000;
2078 r_type
= reloc_entry
->howto
->type
;
2079 if (r_type
!= R_PPC_REL16DX_HA
)
2080 return bfd_reloc_continue
;
2083 if (!bfd_is_com_section (symbol
->section
))
2084 value
= symbol
->value
;
2085 value
+= (reloc_entry
->addend
2086 + symbol
->section
->output_offset
2087 + symbol
->section
->output_section
->vma
);
2088 value
-= (reloc_entry
->address
2089 + input_section
->output_offset
2090 + input_section
->output_section
->vma
);
2093 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2094 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2096 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2097 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2098 return bfd_reloc_ok
;
2101 static bfd_reloc_status_type
2102 ppc_elf_unhandled_reloc (bfd
*abfd
,
2103 arelent
*reloc_entry
,
2106 asection
*input_section
,
2108 char **error_message
)
2110 /* If this is a relocatable link (output_bfd test tells us), just
2111 call the generic function. Any adjustment will be done at final
2113 if (output_bfd
!= NULL
)
2114 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2115 input_section
, output_bfd
, error_message
);
2117 if (error_message
!= NULL
)
2119 static char buf
[60];
2120 sprintf (buf
, _("generic linker can't handle %s"),
2121 reloc_entry
->howto
->name
);
2122 *error_message
= buf
;
2124 return bfd_reloc_dangerous
;
2127 /* Sections created by the linker. */
2129 typedef struct elf_linker_section
2131 /* Pointer to the bfd section. */
2135 /* Associated bss section name. */
2136 const char *bss_name
;
2137 /* Associated symbol name. */
2138 const char *sym_name
;
2139 /* Associated symbol. */
2140 struct elf_link_hash_entry
*sym
;
2141 } elf_linker_section_t
;
2143 /* Linked list of allocated pointer entries. This hangs off of the
2144 symbol lists, and provides allows us to return different pointers,
2145 based on different addend's. */
2147 typedef struct elf_linker_section_pointers
2149 /* next allocated pointer for this symbol */
2150 struct elf_linker_section_pointers
*next
;
2151 /* offset of pointer from beginning of section */
2155 /* which linker section this is */
2156 elf_linker_section_t
*lsect
;
2157 } elf_linker_section_pointers_t
;
2159 struct ppc_elf_obj_tdata
2161 struct elf_obj_tdata elf
;
2163 /* A mapping from local symbols to offsets into the various linker
2164 sections added. This is index by the symbol index. */
2165 elf_linker_section_pointers_t
**linker_section_pointers
;
2167 /* Flags used to auto-detect plt type. */
2168 unsigned int makes_plt_call
: 1;
2169 unsigned int has_rel16
: 1;
2172 #define ppc_elf_tdata(bfd) \
2173 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2175 #define elf_local_ptr_offsets(bfd) \
2176 (ppc_elf_tdata (bfd)->linker_section_pointers)
2178 #define is_ppc_elf(bfd) \
2179 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2180 && elf_object_id (bfd) == PPC32_ELF_DATA)
2182 /* Override the generic function because we store some extras. */
2185 ppc_elf_mkobject (bfd
*abfd
)
2187 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
2191 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2194 _bfd_elf_ppc_set_arch (bfd
*abfd
)
2196 unsigned long mach
= 0;
2198 unsigned char *contents
;
2200 if (abfd
->arch_info
->bits_per_word
== 32
2201 && bfd_big_endian (abfd
))
2204 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2205 if ((elf_section_data (s
)->this_hdr
.sh_flags
& SHF_PPC_VLE
) != 0)
2208 mach
= bfd_mach_ppc_vle
;
2213 s
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2214 if (s
!= NULL
&& bfd_malloc_and_get_section (abfd
, s
, &contents
))
2216 unsigned int apuinfo_size
= bfd_get_32 (abfd
, contents
+ 4);
2219 for (i
= 20; i
< apuinfo_size
+ 20 && i
+ 4 <= s
->size
; i
+= 4)
2221 unsigned int val
= bfd_get_32 (abfd
, contents
+ i
);
2224 case PPC_APUINFO_PMR
:
2225 case PPC_APUINFO_RFMCI
:
2227 mach
= bfd_mach_ppc_titan
;
2230 case PPC_APUINFO_ISEL
:
2231 case PPC_APUINFO_CACHELCK
:
2232 if (mach
== bfd_mach_ppc_titan
)
2233 mach
= bfd_mach_ppc_e500mc
;
2236 case PPC_APUINFO_SPE
:
2237 case PPC_APUINFO_EFS
:
2238 case PPC_APUINFO_BRLOCK
:
2239 if (mach
!= bfd_mach_ppc_vle
)
2240 mach
= bfd_mach_ppc_e500
;
2243 case PPC_APUINFO_VLE
:
2244 mach
= bfd_mach_ppc_vle
;
2255 if (mach
!= 0 && mach
!= -1ul)
2257 const bfd_arch_info_type
*arch
;
2259 for (arch
= abfd
->arch_info
->next
; arch
; arch
= arch
->next
)
2260 if (arch
->mach
== mach
)
2262 abfd
->arch_info
= arch
;
2269 /* Fix bad default arch selected for a 32 bit input bfd when the
2270 default is 64 bit. Also select arch based on apuinfo. */
2273 ppc_elf_object_p (bfd
*abfd
)
2275 if (!abfd
->arch_info
->the_default
)
2278 if (abfd
->arch_info
->bits_per_word
== 64)
2280 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2282 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
2284 /* Relies on arch after 64 bit default being 32 bit default. */
2285 abfd
->arch_info
= abfd
->arch_info
->next
;
2286 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
2289 return _bfd_elf_ppc_set_arch (abfd
);
2292 /* Function to set whether a module needs the -mrelocatable bit set. */
2295 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2297 BFD_ASSERT (!elf_flags_init (abfd
)
2298 || elf_elfheader (abfd
)->e_flags
== flags
);
2300 elf_elfheader (abfd
)->e_flags
= flags
;
2301 elf_flags_init (abfd
) = TRUE
;
2305 /* Support for core dump NOTE sections. */
2308 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2313 switch (note
->descsz
)
2318 case 268: /* Linux/PPC. */
2320 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2323 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
2332 /* Make a ".reg/999" section. */
2333 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2334 size
, note
->descpos
+ offset
);
2338 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2340 switch (note
->descsz
)
2345 case 128: /* Linux/PPC elf_prpsinfo. */
2346 elf_tdata (abfd
)->core
->pid
2347 = bfd_get_32 (abfd
, note
->descdata
+ 16);
2348 elf_tdata (abfd
)->core
->program
2349 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
2350 elf_tdata (abfd
)->core
->command
2351 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
2354 /* Note that for some reason, a spurious space is tacked
2355 onto the end of the args in some (at least one anyway)
2356 implementations, so strip it off if it exists. */
2359 char *command
= elf_tdata (abfd
)->core
->command
;
2360 int n
= strlen (command
);
2362 if (0 < n
&& command
[n
- 1] == ' ')
2363 command
[n
- 1] = '\0';
2370 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
2382 va_start (ap
, note_type
);
2383 memset (data
, 0, sizeof (data
));
2384 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
2385 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
2387 return elfcore_write_note (abfd
, buf
, bufsiz
,
2388 "CORE", note_type
, data
, sizeof (data
));
2399 va_start (ap
, note_type
);
2400 memset (data
, 0, 72);
2401 pid
= va_arg (ap
, long);
2402 bfd_put_32 (abfd
, pid
, data
+ 24);
2403 cursig
= va_arg (ap
, int);
2404 bfd_put_16 (abfd
, cursig
, data
+ 12);
2405 greg
= va_arg (ap
, const void *);
2406 memcpy (data
+ 72, greg
, 192);
2407 memset (data
+ 264, 0, 4);
2409 return elfcore_write_note (abfd
, buf
, bufsiz
,
2410 "CORE", note_type
, data
, sizeof (data
));
2416 ppc_elf_lookup_section_flags (char *flag_name
)
2419 if (!strcmp (flag_name
, "SHF_PPC_VLE"))
2425 /* Return address for Ith PLT stub in section PLT, for relocation REL
2426 or (bfd_vma) -1 if it should not be included. */
2429 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
2430 const asection
*plt ATTRIBUTE_UNUSED
,
2433 return rel
->address
;
2436 /* Handle a PowerPC specific section when reading an object file. This
2437 is called when bfd_section_from_shdr finds a section with an unknown
2441 ppc_elf_section_from_shdr (bfd
*abfd
,
2442 Elf_Internal_Shdr
*hdr
,
2449 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
2452 newsect
= hdr
->bfd_section
;
2453 flags
= bfd_get_section_flags (abfd
, newsect
);
2454 if (hdr
->sh_flags
& SHF_EXCLUDE
)
2455 flags
|= SEC_EXCLUDE
;
2457 if (hdr
->sh_type
== SHT_ORDERED
)
2458 flags
|= SEC_SORT_ENTRIES
;
2460 bfd_set_section_flags (abfd
, newsect
, flags
);
2464 /* Set up any other section flags and such that may be necessary. */
2467 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
2468 Elf_Internal_Shdr
*shdr
,
2471 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
2472 shdr
->sh_type
= SHT_ORDERED
;
2477 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2478 need to bump up the number of section headers. */
2481 ppc_elf_additional_program_headers (bfd
*abfd
,
2482 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2487 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2488 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2491 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2492 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2498 /* Modify the segment map for VLE executables. */
2501 ppc_elf_modify_segment_map (bfd
*abfd
,
2502 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2504 struct elf_segment_map
*m
;
2506 /* At this point in the link, output sections have already been sorted by
2507 LMA and assigned to segments. All that is left to do is to ensure
2508 there is no mixing of VLE & non-VLE sections in a text segment.
2509 If we find that case, we split the segment.
2510 We maintain the original output section order. */
2512 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
2514 struct elf_segment_map
*n
;
2517 unsigned int p_flags
;
2519 if (m
->p_type
!= PT_LOAD
|| m
->count
== 0)
2522 for (p_flags
= PF_R
, j
= 0; j
!= m
->count
; ++j
)
2524 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2526 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2529 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2530 p_flags
|= PF_PPC_VLE
;
2535 while (++j
!= m
->count
)
2537 unsigned int p_flags1
= PF_R
;
2539 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2541 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2544 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2545 p_flags1
|= PF_PPC_VLE
;
2546 if (((p_flags1
^ p_flags
) & PF_PPC_VLE
) != 0)
2549 p_flags
|= p_flags1
;
2551 /* If we're splitting a segment which originally contained rw
2552 sections then those sections might now only be in one of the
2553 two parts. So always set p_flags if splitting, even if we
2554 are being called for objcopy with p_flags_valid set. */
2555 if (j
!= m
->count
|| !m
->p_flags_valid
)
2557 m
->p_flags_valid
= 1;
2558 m
->p_flags
= p_flags
;
2563 /* Sections 0..j-1 stay in this (current) segment,
2564 the remainder are put in a new segment.
2565 The scan resumes with the new segment. */
2567 amt
= sizeof (struct elf_segment_map
);
2568 amt
+= (m
->count
- j
- 1) * sizeof (asection
*);
2569 n
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2573 n
->p_type
= PT_LOAD
;
2574 n
->count
= m
->count
- j
;
2575 for (k
= 0; k
< n
->count
; ++k
)
2576 n
->sections
[k
] = m
->sections
[j
+ k
];
2578 m
->p_size_valid
= 0;
2586 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2587 .PPC.EMB.sbss0 a normal section, and not a bss section so
2588 that the linker doesn't crater when trying to make more than
2591 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
2593 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
2594 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2595 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2596 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2597 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2598 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
2599 { STRING_COMMA_LEN (APUINFO_SECTION_NAME
), 0, SHT_NOTE
, 0 },
2600 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2601 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2602 { NULL
, 0, 0, 0, 0 }
2605 /* This is what we want for new plt/got. */
2606 static struct bfd_elf_special_section ppc_alt_plt
=
2607 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
2609 static const struct bfd_elf_special_section
*
2610 ppc_elf_get_sec_type_attr (bfd
*abfd
, asection
*sec
)
2612 const struct bfd_elf_special_section
*ssect
;
2614 /* See if this is one of the special sections. */
2615 if (sec
->name
== NULL
)
2618 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2622 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2623 ssect
= &ppc_alt_plt
;
2627 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2630 /* Very simple linked list structure for recording apuinfo values. */
2631 typedef struct apuinfo_list
2633 struct apuinfo_list
*next
;
2634 unsigned long value
;
2638 static apuinfo_list
*head
;
2639 static bfd_boolean apuinfo_set
;
2642 apuinfo_list_init (void)
2645 apuinfo_set
= FALSE
;
2649 apuinfo_list_add (unsigned long value
)
2651 apuinfo_list
*entry
= head
;
2653 while (entry
!= NULL
)
2655 if (entry
->value
== value
)
2657 entry
= entry
->next
;
2660 entry
= bfd_malloc (sizeof (* entry
));
2664 entry
->value
= value
;
2670 apuinfo_list_length (void)
2672 apuinfo_list
*entry
;
2673 unsigned long count
;
2675 for (entry
= head
, count
= 0;
2677 entry
= entry
->next
)
2683 static inline unsigned long
2684 apuinfo_list_element (unsigned long number
)
2686 apuinfo_list
* entry
;
2690 entry
= entry
->next
)
2693 return entry
? entry
->value
: 0;
2697 apuinfo_list_finish (void)
2699 apuinfo_list
*entry
;
2701 for (entry
= head
; entry
;)
2703 apuinfo_list
*next
= entry
->next
;
2711 /* Scan the input BFDs and create a linked list of
2712 the APUinfo values that will need to be emitted. */
2715 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2719 char *buffer
= NULL
;
2720 bfd_size_type largest_input_size
= 0;
2722 unsigned long length
;
2723 const char *error_message
= NULL
;
2725 if (link_info
== NULL
)
2728 apuinfo_list_init ();
2730 /* Read in the input sections contents. */
2731 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
2733 unsigned long datum
;
2735 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2739 /* xgettext:c-format */
2740 error_message
= _("corrupt %s section in %pB");
2741 length
= asec
->size
;
2746 if (largest_input_size
< asec
->size
)
2750 largest_input_size
= asec
->size
;
2751 buffer
= bfd_malloc (largest_input_size
);
2756 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2757 || (bfd_bread (buffer
, length
, ibfd
) != length
))
2759 /* xgettext:c-format */
2760 error_message
= _("unable to read in %s section from %pB");
2764 /* Verify the contents of the header. Note - we have to
2765 extract the values this way in order to allow for a
2766 host whose endian-ness is different from the target. */
2767 datum
= bfd_get_32 (ibfd
, buffer
);
2768 if (datum
!= sizeof APUINFO_LABEL
)
2771 datum
= bfd_get_32 (ibfd
, buffer
+ 8);
2775 if (strcmp (buffer
+ 12, APUINFO_LABEL
) != 0)
2778 /* Get the number of bytes used for apuinfo entries. */
2779 datum
= bfd_get_32 (ibfd
, buffer
+ 4);
2780 if (datum
+ 20 != length
)
2783 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2784 for (i
= 0; i
< datum
; i
+= 4)
2785 apuinfo_list_add (bfd_get_32 (ibfd
, buffer
+ 20 + i
));
2788 error_message
= NULL
;
2792 /* Compute the size of the output section. */
2793 unsigned num_entries
= apuinfo_list_length ();
2795 /* Set the output section size, if it exists. */
2796 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2798 if (asec
&& ! bfd_set_section_size (abfd
, asec
, 20 + num_entries
* 4))
2801 /* xgettext:c-format */
2802 error_message
= _("warning: unable to set size of %s section in %pB");
2811 _bfd_error_handler (error_message
, APUINFO_SECTION_NAME
, ibfd
);
2814 /* Prevent the output section from accumulating the input sections'
2815 contents. We have already stored this in our linked list structure. */
2818 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2819 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2821 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2823 return apuinfo_set
&& strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0;
2826 /* Finally we can generate the output section. */
2829 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2834 unsigned num_entries
;
2835 bfd_size_type length
;
2837 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2844 length
= asec
->size
;
2848 buffer
= bfd_malloc (length
);
2852 (_("failed to allocate space for new APUinfo section"));
2856 /* Create the apuinfo header. */
2857 num_entries
= apuinfo_list_length ();
2858 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2859 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2860 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2861 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2864 for (i
= 0; i
< num_entries
; i
++)
2866 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2870 if (length
!= asec
->size
)
2871 _bfd_error_handler (_("failed to compute new APUinfo section"));
2873 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2874 _bfd_error_handler (_("failed to install new APUinfo section"));
2878 apuinfo_list_finish ();
2882 is_nonpic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2884 bfd_byte buf
[4 * 4];
2886 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, sizeof buf
))
2889 return ((bfd_get_32 (abfd
, buf
+ 0) & 0xffff0000) == LIS_11
2890 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2891 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
2892 && bfd_get_32 (abfd
, buf
+ 12) == BCTR
);
2896 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2898 bfd_vma vma
= *(bfd_vma
*) ptr
;
2899 return ((section
->flags
& SEC_ALLOC
) != 0
2900 && section
->vma
<= vma
2901 && vma
< section
->vma
+ section
->size
);
2905 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2906 long dynsymcount
, asymbol
**dynsyms
,
2909 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2910 asection
*plt
, *relplt
, *dynamic
, *glink
;
2911 bfd_vma glink_vma
= 0;
2912 bfd_vma resolv_vma
= 0;
2916 long count
, i
, stub_delta
;
2923 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2926 if (dynsymcount
<= 0)
2929 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2933 plt
= bfd_get_section_by_name (abfd
, ".plt");
2937 /* Call common code to handle old-style executable PLTs. */
2938 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2939 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2940 dynsymcount
, dynsyms
, ret
);
2942 /* If this object was prelinked, the prelinker stored the address
2943 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2944 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2945 if (dynamic
!= NULL
)
2947 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2949 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2951 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2954 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2955 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2958 extdynend
= extdyn
+ dynamic
->size
;
2959 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2961 Elf_Internal_Dyn dyn
;
2962 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2964 if (dyn
.d_tag
== DT_NULL
)
2967 if (dyn
.d_tag
== DT_PPC_GOT
)
2969 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2970 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2972 && bfd_get_section_contents (abfd
, got
, buf
,
2973 g_o_t
- got
->vma
+ 4, 4))
2974 glink_vma
= bfd_get_32 (abfd
, buf
);
2981 /* Otherwise we read the first plt entry. */
2984 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
2985 glink_vma
= bfd_get_32 (abfd
, buf
);
2991 /* The .glink section usually does not survive the final
2992 link; search for the section (usually .text) where the
2993 glink stubs now reside. */
2994 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
2998 /* Determine glink PLT resolver by reading the relative branch
2999 from the first glink stub. */
3000 if (bfd_get_section_contents (abfd
, glink
, buf
,
3001 glink_vma
- glink
->vma
, 4))
3003 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3005 /* The first glink stub may either branch to the resolver ... */
3007 if ((insn
& ~0x3fffffc) == 0)
3008 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
3010 /* ... or fall through a bunch of NOPs. */
3011 else if ((insn
^ B
^ NOP
) == 0)
3013 bfd_get_section_contents (abfd
, glink
, buf
,
3014 glink_vma
- glink
->vma
+ i
, 4);
3016 if (bfd_get_32 (abfd
, buf
) != NOP
)
3018 resolv_vma
= glink_vma
+ i
;
3023 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
3024 /* If the stubs are those for -shared/-pie then we might have
3025 multiple stubs for each plt entry. If that is the case then
3026 there is no way to associate stubs with their plt entries short
3027 of figuring out the GOT pointer value used in the stub.
3028 The offsets tested here need to cover all possible values of
3029 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3030 stub_off
= glink_vma
- glink
->vma
;
3031 for (stub_delta
= 16; stub_delta
<= 32; stub_delta
+= 8)
3032 if (is_nonpic_glink_stub (abfd
, glink
, stub_off
- stub_delta
))
3034 if (stub_delta
> 32)
3037 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3038 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
3041 size
= count
* sizeof (asymbol
);
3042 p
= relplt
->relocation
;
3043 for (i
= 0; i
< count
; i
++, p
++)
3045 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3047 size
+= sizeof ("+0x") - 1 + 8;
3050 size
+= sizeof (asymbol
) + sizeof ("__glink");
3053 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3055 s
= *ret
= bfd_malloc (size
);
3059 stub_off
= glink_vma
- glink
->vma
;
3060 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
3061 p
= relplt
->relocation
+ count
- 1;
3062 for (i
= 0; i
< count
; i
++)
3066 stub_off
-= stub_delta
;
3067 if (strcmp ((*p
->sym_ptr_ptr
)->name
, "__tls_get_addr_opt") == 0)
3069 *s
= **p
->sym_ptr_ptr
;
3070 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3071 we are defining a symbol, ensure one of them is set. */
3072 if ((s
->flags
& BSF_LOCAL
) == 0)
3073 s
->flags
|= BSF_GLOBAL
;
3074 s
->flags
|= BSF_SYNTHETIC
;
3076 s
->value
= stub_off
;
3079 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3080 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3084 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3085 names
+= sizeof ("+0x") - 1;
3086 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3087 names
+= strlen (names
);
3089 memcpy (names
, "@plt", sizeof ("@plt"));
3090 names
+= sizeof ("@plt");
3095 /* Add a symbol at the start of the glink branch table. */
3096 memset (s
, 0, sizeof *s
);
3098 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3100 s
->value
= glink_vma
- glink
->vma
;
3102 memcpy (names
, "__glink", sizeof ("__glink"));
3103 names
+= sizeof ("__glink");
3109 /* Add a symbol for the glink PLT resolver. */
3110 memset (s
, 0, sizeof *s
);
3112 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3114 s
->value
= resolv_vma
- glink
->vma
;
3116 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3117 names
+= sizeof ("__glink_PLTresolve");
3125 /* The following functions are specific to the ELF linker, while
3126 functions above are used generally. They appear in this file more
3127 or less in the order in which they are called. eg.
3128 ppc_elf_check_relocs is called early in the link process,
3129 ppc_elf_finish_dynamic_sections is one of the last functions
3132 /* Track PLT entries needed for a given symbol. We might need more
3133 than one glink entry per symbol when generating a pic binary. */
3136 struct plt_entry
*next
;
3138 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3139 This field stores the offset into .got2 used to initialise the
3140 GOT pointer reg. It will always be at least 32768. (Current
3141 gcc always uses an offset of 32768, but ld -r will pack .got2
3142 sections together resulting in larger offsets). */
3145 /* The .got2 section. */
3148 /* PLT refcount or offset. */
3151 bfd_signed_vma refcount
;
3155 /* .glink stub offset. */
3156 bfd_vma glink_offset
;
3159 /* Of those relocs that might be copied as dynamic relocs, this
3160 function selects those that must be copied when linking a shared
3161 library or PIE, even when the symbol is local. */
3164 must_be_dyn_reloc (struct bfd_link_info
*info
,
3165 enum elf_ppc_reloc_type r_type
)
3170 /* Only relative relocs can be resolved when the object load
3171 address isn't fixed. DTPREL32 is excluded because the
3172 dynamic linker needs to differentiate global dynamic from
3173 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3178 case R_PPC_REL14_BRTAKEN
:
3179 case R_PPC_REL14_BRNTAKEN
:
3185 case R_PPC_TPREL16_LO
:
3186 case R_PPC_TPREL16_HI
:
3187 case R_PPC_TPREL16_HA
:
3188 /* These relocations are relative but in a shared library the
3189 linker doesn't know the thread pointer base. */
3190 return bfd_link_dll (info
);
3194 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3195 copying dynamic variables from a shared lib into an app's dynbss
3196 section, and instead use a dynamic relocation to point into the
3198 #define ELIMINATE_COPY_RELOCS 1
3200 /* Used to track dynamic relocations for local symbols. */
3201 struct ppc_dyn_relocs
3203 struct ppc_dyn_relocs
*next
;
3205 /* The input section of the reloc. */
3208 /* Total number of relocs copied for the input section. */
3209 unsigned int count
: 31;
3211 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3212 unsigned int ifunc
: 1;
3215 /* PPC ELF linker hash entry. */
3217 struct ppc_elf_link_hash_entry
3219 struct elf_link_hash_entry elf
;
3221 /* If this symbol is used in the linker created sections, the processor
3222 specific backend uses this field to map the field into the offset
3223 from the beginning of the section. */
3224 elf_linker_section_pointers_t
*linker_section_pointer
;
3226 /* Track dynamic relocs copied for this symbol. */
3227 struct elf_dyn_relocs
*dyn_relocs
;
3229 /* Contexts in which symbol is used in the GOT (or TOC).
3230 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3231 corresponding relocs are encountered during check_relocs.
3232 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3233 indicate the corresponding GOT entry type is not needed. */
3234 #define TLS_GD 1 /* GD reloc. */
3235 #define TLS_LD 2 /* LD reloc. */
3236 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3237 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3238 #define TLS_TLS 16 /* Any TLS reloc. */
3239 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3240 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3243 /* Nonzero if we have seen a small data relocation referring to this
3245 unsigned char has_sda_refs
: 1;
3247 /* Flag use of given relocations. */
3248 unsigned char has_addr16_ha
: 1;
3249 unsigned char has_addr16_lo
: 1;
3252 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3254 /* PPC ELF linker hash table. */
3256 struct ppc_elf_link_hash_table
3258 struct elf_link_hash_table elf
;
3260 /* Various options passed from the linker. */
3261 struct ppc_elf_params
*params
;
3263 /* Short-cuts to get to dynamic linker sections. */
3267 elf_linker_section_t sdata
[2];
3269 asection
*glink_eh_frame
;
3271 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3274 /* Shortcut to __tls_get_addr. */
3275 struct elf_link_hash_entry
*tls_get_addr
;
3277 /* The bfd that forced an old-style PLT. */
3280 /* TLS local dynamic got entry handling. */
3282 bfd_signed_vma refcount
;
3286 /* Offset of branch table to PltResolve function in glink. */
3287 bfd_vma glink_pltresolve
;
3289 /* Size of reserved GOT entries. */
3290 unsigned int got_header_size
;
3291 /* Non-zero if allocating the header left a gap. */
3292 unsigned int got_gap
;
3294 /* The type of PLT we have chosen to use. */
3295 enum ppc_elf_plt_type plt_type
;
3297 /* True if the target system is VxWorks. */
3298 unsigned int is_vxworks
:1;
3300 /* Whether there exist local gnu indirect function resolvers,
3301 referenced by dynamic relocations. */
3302 unsigned int local_ifunc_resolver
:1;
3303 unsigned int maybe_local_ifunc_resolver
:1;
3305 /* Set if tls optimization is enabled. */
3306 unsigned int do_tls_opt
:1;
3308 /* The size of PLT entries. */
3310 /* The distance between adjacent PLT slots. */
3312 /* The size of the first PLT entry. */
3313 int plt_initial_entry_size
;
3315 /* Small local sym cache. */
3316 struct sym_cache sym_cache
;
3319 /* Rename some of the generic section flags to better document how they
3320 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3322 /* Nonzero if this section has TLS related relocations. */
3323 #define has_tls_reloc sec_flg0
3325 /* Nonzero if this section has a call to __tls_get_addr. */
3326 #define has_tls_get_addr_call sec_flg1
3328 /* Get the PPC ELF linker hash table from a link_info structure. */
3330 #define ppc_elf_hash_table(p) \
3331 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3332 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3334 /* Create an entry in a PPC ELF linker hash table. */
3336 static struct bfd_hash_entry
*
3337 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3338 struct bfd_hash_table
*table
,
3341 /* Allocate the structure if it has not already been allocated by a
3345 entry
= bfd_hash_allocate (table
,
3346 sizeof (struct ppc_elf_link_hash_entry
));
3351 /* Call the allocation method of the superclass. */
3352 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3355 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
3356 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
3357 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
3358 ppc_elf_hash_entry (entry
)->has_sda_refs
= 0;
3364 /* Create a PPC ELF linker hash table. */
3366 static struct bfd_link_hash_table
*
3367 ppc_elf_link_hash_table_create (bfd
*abfd
)
3369 struct ppc_elf_link_hash_table
*ret
;
3370 static struct ppc_elf_params default_params
3371 = { PLT_OLD
, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
3373 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
3377 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
3378 ppc_elf_link_hash_newfunc
,
3379 sizeof (struct ppc_elf_link_hash_entry
),
3386 ret
->elf
.init_plt_refcount
.refcount
= 0;
3387 ret
->elf
.init_plt_refcount
.glist
= NULL
;
3388 ret
->elf
.init_plt_offset
.offset
= 0;
3389 ret
->elf
.init_plt_offset
.glist
= NULL
;
3391 ret
->params
= &default_params
;
3393 ret
->sdata
[0].name
= ".sdata";
3394 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
3395 ret
->sdata
[0].bss_name
= ".sbss";
3397 ret
->sdata
[1].name
= ".sdata2";
3398 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
3399 ret
->sdata
[1].bss_name
= ".sbss2";
3401 ret
->plt_entry_size
= 12;
3402 ret
->plt_slot_size
= 8;
3403 ret
->plt_initial_entry_size
= 72;
3405 return &ret
->elf
.root
;
3408 /* Hook linker params into hash table. */
3411 ppc_elf_link_params (struct bfd_link_info
*info
, struct ppc_elf_params
*params
)
3413 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3416 htab
->params
= params
;
3417 params
->pagesize_p2
= bfd_log2 (params
->pagesize
);
3420 /* Create .got and the related sections. */
3423 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
3425 struct ppc_elf_link_hash_table
*htab
;
3427 if (!_bfd_elf_create_got_section (abfd
, info
))
3430 htab
= ppc_elf_hash_table (info
);
3431 if (!htab
->is_vxworks
)
3433 /* The powerpc .got has a blrl instruction in it. Mark it
3435 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
3436 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3437 if (!bfd_set_section_flags (abfd
, htab
->elf
.sgot
, flags
))
3444 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3445 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3446 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3449 ppc_elf_create_linker_section (bfd
*abfd
,
3450 struct bfd_link_info
*info
,
3452 elf_linker_section_t
*lsect
)
3456 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3457 | SEC_LINKER_CREATED
);
3459 s
= bfd_make_section_anyway_with_flags (abfd
, lsect
->name
, flags
);
3464 /* Define the sym on the first section of this name. */
3465 s
= bfd_get_section_by_name (abfd
, lsect
->name
);
3467 lsect
->sym
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, lsect
->sym_name
);
3468 if (lsect
->sym
== NULL
)
3470 lsect
->sym
->root
.u
.def
.value
= 0x8000;
3475 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
3477 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3482 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
3483 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3484 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
3486 p2align
= htab
->params
->ppc476_workaround
? 6 : 4;
3487 if (p2align
< htab
->params
->plt_stub_align
)
3488 p2align
= htab
->params
->plt_stub_align
;
3490 || !bfd_set_section_alignment (abfd
, s
, p2align
))
3493 if (!info
->no_ld_generated_unwind_info
)
3495 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3497 s
= bfd_make_section_anyway_with_flags (abfd
, ".eh_frame", flags
);
3498 htab
->glink_eh_frame
= s
;
3500 || !bfd_set_section_alignment (abfd
, s
, 2))
3504 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
3505 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
3508 || !bfd_set_section_alignment (abfd
, s
, 4))
3511 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3512 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3513 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.iplt", flags
);
3514 htab
->elf
.irelplt
= s
;
3516 || ! bfd_set_section_alignment (abfd
, s
, 2))
3519 if (!ppc_elf_create_linker_section (abfd
, info
, 0,
3523 if (!ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3530 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3531 to output sections (just like _bfd_elf_create_dynamic_sections has
3532 to create .dynbss and .rela.bss). */
3535 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3537 struct ppc_elf_link_hash_table
*htab
;
3541 htab
= ppc_elf_hash_table (info
);
3543 if (htab
->elf
.sgot
== NULL
3544 && !ppc_elf_create_got (abfd
, info
))
3547 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
3550 if (htab
->glink
== NULL
3551 && !ppc_elf_create_glink (abfd
, info
))
3554 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynsbss",
3555 SEC_ALLOC
| SEC_LINKER_CREATED
);
3560 if (! bfd_link_pic (info
))
3562 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3563 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3564 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.sbss", flags
);
3567 || ! bfd_set_section_alignment (abfd
, s
, 2))
3571 if (htab
->is_vxworks
3572 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
3576 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
3577 if (htab
->plt_type
== PLT_VXWORKS
)
3578 /* The VxWorks PLT is a loaded section with contents. */
3579 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3580 return bfd_set_section_flags (abfd
, s
, flags
);
3583 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3586 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3587 struct elf_link_hash_entry
*dir
,
3588 struct elf_link_hash_entry
*ind
)
3590 struct ppc_elf_link_hash_entry
*edir
, *eind
;
3592 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
3593 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
3595 edir
->tls_mask
|= eind
->tls_mask
;
3596 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3598 if (edir
->elf
.versioned
!= versioned_hidden
)
3599 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3600 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3601 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3602 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3603 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3604 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3606 /* If we were called to copy over info for a weak sym, that's all. */
3607 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3610 if (eind
->dyn_relocs
!= NULL
)
3612 if (edir
->dyn_relocs
!= NULL
)
3614 struct elf_dyn_relocs
**pp
;
3615 struct elf_dyn_relocs
*p
;
3617 /* Add reloc counts against the indirect sym to the direct sym
3618 list. Merge any entries against the same section. */
3619 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3621 struct elf_dyn_relocs
*q
;
3623 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3624 if (q
->sec
== p
->sec
)
3626 q
->pc_count
+= p
->pc_count
;
3627 q
->count
+= p
->count
;
3634 *pp
= edir
->dyn_relocs
;
3637 edir
->dyn_relocs
= eind
->dyn_relocs
;
3638 eind
->dyn_relocs
= NULL
;
3641 /* Copy over the GOT refcount entries that we may have already seen to
3642 the symbol which just became indirect. */
3643 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3644 eind
->elf
.got
.refcount
= 0;
3646 /* And plt entries. */
3647 if (eind
->elf
.plt
.plist
!= NULL
)
3649 if (edir
->elf
.plt
.plist
!= NULL
)
3651 struct plt_entry
**entp
;
3652 struct plt_entry
*ent
;
3654 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3656 struct plt_entry
*dent
;
3658 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3659 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3661 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3668 *entp
= edir
->elf
.plt
.plist
;
3671 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3672 eind
->elf
.plt
.plist
= NULL
;
3675 if (eind
->elf
.dynindx
!= -1)
3677 if (edir
->elf
.dynindx
!= -1)
3678 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3679 edir
->elf
.dynstr_index
);
3680 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3681 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3682 eind
->elf
.dynindx
= -1;
3683 eind
->elf
.dynstr_index
= 0;
3687 /* Hook called by the linker routine which adds symbols from an object
3688 file. We use it to put .comm items in .sbss, and not .bss. */
3691 ppc_elf_add_symbol_hook (bfd
*abfd
,
3692 struct bfd_link_info
*info
,
3693 Elf_Internal_Sym
*sym
,
3694 const char **namep ATTRIBUTE_UNUSED
,
3695 flagword
*flagsp ATTRIBUTE_UNUSED
,
3699 if (sym
->st_shndx
== SHN_COMMON
3700 && !bfd_link_relocatable (info
)
3701 && is_ppc_elf (info
->output_bfd
)
3702 && sym
->st_size
<= elf_gp_size (abfd
))
3704 /* Common symbols less than or equal to -G nn bytes are automatically
3706 struct ppc_elf_link_hash_table
*htab
;
3708 htab
= ppc_elf_hash_table (info
);
3709 if (htab
->sbss
== NULL
)
3711 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3713 if (!htab
->elf
.dynobj
)
3714 htab
->elf
.dynobj
= abfd
;
3716 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3719 if (htab
->sbss
== NULL
)
3724 *valp
= sym
->st_size
;
3727 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3728 && (abfd
->flags
& DYNAMIC
) == 0
3729 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
3730 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
3735 /* Find a linker generated pointer with a given addend and type. */
3737 static elf_linker_section_pointers_t
*
3738 elf_find_pointer_linker_section
3739 (elf_linker_section_pointers_t
*linker_pointers
,
3741 elf_linker_section_t
*lsect
)
3743 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3744 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3745 return linker_pointers
;
3750 /* Allocate a pointer to live in a linker created section. */
3753 elf_allocate_pointer_linker_section (bfd
*abfd
,
3754 elf_linker_section_t
*lsect
,
3755 struct elf_link_hash_entry
*h
,
3756 const Elf_Internal_Rela
*rel
)
3758 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3759 elf_linker_section_pointers_t
*linker_section_ptr
;
3760 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3763 BFD_ASSERT (lsect
!= NULL
);
3765 /* Is this a global symbol? */
3768 struct ppc_elf_link_hash_entry
*eh
;
3770 /* Has this symbol already been allocated? If so, our work is done. */
3771 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3772 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3777 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3781 BFD_ASSERT (is_ppc_elf (abfd
));
3783 /* Allocation of a pointer to a local symbol. */
3784 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3786 /* Allocate a table to hold the local symbols if first time. */
3789 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3792 amt
*= sizeof (elf_linker_section_pointers_t
*);
3793 ptr
= bfd_zalloc (abfd
, amt
);
3798 elf_local_ptr_offsets (abfd
) = ptr
;
3801 /* Has this symbol already been allocated? If so, our work is done. */
3802 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3807 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3810 /* Allocate space for a pointer in the linker section, and allocate
3811 a new pointer record from internal memory. */
3812 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3813 amt
= sizeof (elf_linker_section_pointers_t
);
3814 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3816 if (!linker_section_ptr
)
3819 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3820 linker_section_ptr
->addend
= rel
->r_addend
;
3821 linker_section_ptr
->lsect
= lsect
;
3822 *ptr_linker_section_ptr
= linker_section_ptr
;
3824 if (!bfd_set_section_alignment (lsect
->section
->owner
, lsect
->section
, 2))
3826 linker_section_ptr
->offset
= lsect
->section
->size
;
3827 lsect
->section
->size
+= 4;
3831 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3832 lsect
->name
, (long) linker_section_ptr
->offset
,
3833 (long) lsect
->section
->size
);
3839 static struct plt_entry
**
3840 update_local_sym_info (bfd
*abfd
,
3841 Elf_Internal_Shdr
*symtab_hdr
,
3842 unsigned long r_symndx
,
3845 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3846 struct plt_entry
**local_plt
;
3847 char *local_got_tls_masks
;
3849 if (local_got_refcounts
== NULL
)
3851 bfd_size_type size
= symtab_hdr
->sh_info
;
3853 size
*= (sizeof (*local_got_refcounts
)
3854 + sizeof (*local_plt
)
3855 + sizeof (*local_got_tls_masks
));
3856 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3857 if (local_got_refcounts
== NULL
)
3859 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3862 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3863 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3864 local_got_tls_masks
[r_symndx
] |= tls_type
;
3865 if (tls_type
!= PLT_IFUNC
)
3866 local_got_refcounts
[r_symndx
] += 1;
3867 return local_plt
+ r_symndx
;
3871 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3872 asection
*sec
, bfd_vma addend
)
3874 struct plt_entry
*ent
;
3878 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3879 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3883 bfd_size_type amt
= sizeof (*ent
);
3884 ent
= bfd_alloc (abfd
, amt
);
3889 ent
->addend
= addend
;
3890 ent
->plt
.refcount
= 0;
3893 ent
->plt
.refcount
+= 1;
3897 static struct plt_entry
*
3898 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3900 struct plt_entry
*ent
;
3904 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3905 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3911 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3913 return (r_type
== R_PPC_PLTREL24
3914 || r_type
== R_PPC_LOCAL24PC
3915 || r_type
== R_PPC_REL24
3916 || r_type
== R_PPC_REL14
3917 || r_type
== R_PPC_REL14_BRTAKEN
3918 || r_type
== R_PPC_REL14_BRNTAKEN
3919 || r_type
== R_PPC_ADDR24
3920 || r_type
== R_PPC_ADDR14
3921 || r_type
== R_PPC_ADDR14_BRTAKEN
3922 || r_type
== R_PPC_ADDR14_BRNTAKEN
3923 || r_type
== R_PPC_VLE_REL24
);
3927 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3930 /* xgettext:c-format */
3931 (_("%pB: relocation %s cannot be used when making a shared object"),
3933 ppc_elf_howto_table
[r_type
]->name
);
3934 bfd_set_error (bfd_error_bad_value
);
3937 /* Look through the relocs for a section during the first phase, and
3938 allocate space in the global offset table or procedure linkage
3942 ppc_elf_check_relocs (bfd
*abfd
,
3943 struct bfd_link_info
*info
,
3945 const Elf_Internal_Rela
*relocs
)
3947 struct ppc_elf_link_hash_table
*htab
;
3948 Elf_Internal_Shdr
*symtab_hdr
;
3949 struct elf_link_hash_entry
**sym_hashes
;
3950 const Elf_Internal_Rela
*rel
;
3951 const Elf_Internal_Rela
*rel_end
;
3952 asection
*got2
, *sreloc
;
3953 struct elf_link_hash_entry
*tga
;
3955 if (bfd_link_relocatable (info
))
3958 /* Don't do anything special with non-loaded, non-alloced sections.
3959 In particular, any relocs in such sections should not affect GOT
3960 and PLT reference counting (ie. we don't allow them to create GOT
3961 or PLT entries), there's no possibility or desire to optimize TLS
3962 relocs, and there's not much point in propagating relocs to shared
3963 libs that the dynamic linker won't relocate. */
3964 if ((sec
->flags
& SEC_ALLOC
) == 0)
3968 _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
3972 BFD_ASSERT (is_ppc_elf (abfd
));
3974 /* Initialize howto table if not already done. */
3975 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3976 ppc_elf_howto_init ();
3978 htab
= ppc_elf_hash_table (info
);
3979 if (htab
->glink
== NULL
)
3981 if (htab
->elf
.dynobj
== NULL
)
3982 htab
->elf
.dynobj
= abfd
;
3983 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
3986 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3987 FALSE
, FALSE
, TRUE
);
3988 symtab_hdr
= &elf_symtab_hdr (abfd
);
3989 sym_hashes
= elf_sym_hashes (abfd
);
3990 got2
= bfd_get_section_by_name (abfd
, ".got2");
3993 rel_end
= relocs
+ sec
->reloc_count
;
3994 for (rel
= relocs
; rel
< rel_end
; rel
++)
3996 unsigned long r_symndx
;
3997 enum elf_ppc_reloc_type r_type
;
3998 struct elf_link_hash_entry
*h
;
4000 struct plt_entry
**ifunc
;
4002 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4003 if (r_symndx
< symtab_hdr
->sh_info
)
4007 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4008 while (h
->root
.type
== bfd_link_hash_indirect
4009 || h
->root
.type
== bfd_link_hash_warning
)
4010 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4013 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4014 This shows up in particular in an R_PPC_ADDR32 in the eabi
4017 && htab
->elf
.sgot
== NULL
4018 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
4020 if (htab
->elf
.dynobj
== NULL
)
4021 htab
->elf
.dynobj
= abfd
;
4022 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4024 BFD_ASSERT (h
== htab
->elf
.hgot
);
4028 r_type
= ELF32_R_TYPE (rel
->r_info
);
4030 if (h
== NULL
&& !htab
->is_vxworks
)
4032 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4037 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4039 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4040 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4045 /* STT_GNU_IFUNC symbols must have a PLT entry;
4046 In a non-pie executable even when there are
4048 if (!bfd_link_pic (info
)
4049 || is_branch_reloc (r_type
))
4052 if (r_type
== R_PPC_PLTREL24
)
4054 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4055 if (bfd_link_pic (info
))
4056 addend
= rel
->r_addend
;
4058 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
4064 if (!htab
->is_vxworks
4065 && is_branch_reloc (r_type
)
4070 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
4071 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
4072 /* We have a new-style __tls_get_addr call with a marker
4076 /* Mark this section as having an old-style call. */
4077 sec
->has_tls_get_addr_call
= 1;
4084 /* These special tls relocs tie a call to __tls_get_addr with
4085 its parameter symbol. */
4088 case R_PPC_GOT_TLSLD16
:
4089 case R_PPC_GOT_TLSLD16_LO
:
4090 case R_PPC_GOT_TLSLD16_HI
:
4091 case R_PPC_GOT_TLSLD16_HA
:
4092 tls_type
= TLS_TLS
| TLS_LD
;
4095 case R_PPC_GOT_TLSGD16
:
4096 case R_PPC_GOT_TLSGD16_LO
:
4097 case R_PPC_GOT_TLSGD16_HI
:
4098 case R_PPC_GOT_TLSGD16_HA
:
4099 tls_type
= TLS_TLS
| TLS_GD
;
4102 case R_PPC_GOT_TPREL16
:
4103 case R_PPC_GOT_TPREL16_LO
:
4104 case R_PPC_GOT_TPREL16_HI
:
4105 case R_PPC_GOT_TPREL16_HA
:
4106 if (bfd_link_dll (info
))
4107 info
->flags
|= DF_STATIC_TLS
;
4108 tls_type
= TLS_TLS
| TLS_TPREL
;
4111 case R_PPC_GOT_DTPREL16
:
4112 case R_PPC_GOT_DTPREL16_LO
:
4113 case R_PPC_GOT_DTPREL16_HI
:
4114 case R_PPC_GOT_DTPREL16_HA
:
4115 tls_type
= TLS_TLS
| TLS_DTPREL
;
4117 sec
->has_tls_reloc
= 1;
4120 /* GOT16 relocations */
4122 case R_PPC_GOT16_LO
:
4123 case R_PPC_GOT16_HI
:
4124 case R_PPC_GOT16_HA
:
4125 /* This symbol requires a global offset table entry. */
4126 if (htab
->elf
.sgot
== NULL
)
4128 if (htab
->elf
.dynobj
== NULL
)
4129 htab
->elf
.dynobj
= abfd
;
4130 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4135 h
->got
.refcount
+= 1;
4136 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4139 /* This is a global offset table entry for a local symbol. */
4140 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4143 /* We may also need a plt entry if the symbol turns out to be
4145 if (h
!= NULL
&& !bfd_link_pic (info
))
4147 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4152 /* Indirect .sdata relocation. */
4153 case R_PPC_EMB_SDAI16
:
4154 if (bfd_link_pic (info
))
4156 bad_shared_reloc (abfd
, r_type
);
4159 htab
->sdata
[0].sym
->ref_regular
= 1;
4160 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[0],
4165 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4166 h
->non_got_ref
= TRUE
;
4170 /* Indirect .sdata2 relocation. */
4171 case R_PPC_EMB_SDA2I16
:
4172 if (bfd_link_pic (info
))
4174 bad_shared_reloc (abfd
, r_type
);
4177 htab
->sdata
[1].sym
->ref_regular
= 1;
4178 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[1],
4183 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4184 h
->non_got_ref
= TRUE
;
4188 case R_PPC_SDAREL16
:
4189 htab
->sdata
[0].sym
->ref_regular
= 1;
4192 case R_PPC_VLE_SDAREL_LO16A
:
4193 case R_PPC_VLE_SDAREL_LO16D
:
4194 case R_PPC_VLE_SDAREL_HI16A
:
4195 case R_PPC_VLE_SDAREL_HI16D
:
4196 case R_PPC_VLE_SDAREL_HA16A
:
4197 case R_PPC_VLE_SDAREL_HA16D
:
4200 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4201 h
->non_got_ref
= TRUE
;
4205 case R_PPC_VLE_REL8
:
4206 case R_PPC_VLE_REL15
:
4207 case R_PPC_VLE_REL24
:
4208 case R_PPC_VLE_LO16A
:
4209 case R_PPC_VLE_LO16D
:
4210 case R_PPC_VLE_HI16A
:
4211 case R_PPC_VLE_HI16D
:
4212 case R_PPC_VLE_HA16A
:
4213 case R_PPC_VLE_HA16D
:
4214 case R_PPC_VLE_ADDR20
:
4217 case R_PPC_EMB_SDA2REL
:
4218 if (bfd_link_pic (info
))
4220 bad_shared_reloc (abfd
, r_type
);
4223 htab
->sdata
[1].sym
->ref_regular
= 1;
4226 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4227 h
->non_got_ref
= TRUE
;
4231 case R_PPC_VLE_SDA21_LO
:
4232 case R_PPC_VLE_SDA21
:
4233 case R_PPC_EMB_SDA21
:
4234 case R_PPC_EMB_RELSDA
:
4235 if (bfd_link_pic (info
))
4237 bad_shared_reloc (abfd
, r_type
);
4242 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4243 h
->non_got_ref
= TRUE
;
4247 case R_PPC_EMB_NADDR32
:
4248 case R_PPC_EMB_NADDR16
:
4249 case R_PPC_EMB_NADDR16_LO
:
4250 case R_PPC_EMB_NADDR16_HI
:
4251 case R_PPC_EMB_NADDR16_HA
:
4252 if (bfd_link_pic (info
))
4254 bad_shared_reloc (abfd
, r_type
);
4258 h
->non_got_ref
= TRUE
;
4261 case R_PPC_PLTREL24
:
4266 case R_PPC_PLTREL32
:
4267 case R_PPC_PLT16_LO
:
4268 case R_PPC_PLT16_HI
:
4269 case R_PPC_PLT16_HA
:
4271 fprintf (stderr
, "Reloc requires a PLT entry\n");
4273 /* This symbol requires a procedure linkage table entry. */
4278 /* It does not make sense to have a procedure linkage
4279 table entry for a non-ifunc local symbol. */
4280 info
->callbacks
->einfo
4281 /* xgettext:c-format */
4282 (_("%H: %s reloc against local symbol\n"),
4283 abfd
, sec
, rel
->r_offset
,
4284 ppc_elf_howto_table
[r_type
]->name
);
4285 bfd_set_error (bfd_error_bad_value
);
4293 if (r_type
== R_PPC_PLTREL24
)
4295 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4296 if (bfd_link_pic (info
))
4297 addend
= rel
->r_addend
;
4300 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4305 /* The following relocations don't need to propagate the
4306 relocation if linking a shared object since they are
4307 section relative. */
4309 case R_PPC_SECTOFF_LO
:
4310 case R_PPC_SECTOFF_HI
:
4311 case R_PPC_SECTOFF_HA
:
4312 case R_PPC_DTPREL16
:
4313 case R_PPC_DTPREL16_LO
:
4314 case R_PPC_DTPREL16_HI
:
4315 case R_PPC_DTPREL16_HA
:
4320 case R_PPC_REL16_LO
:
4321 case R_PPC_REL16_HI
:
4322 case R_PPC_REL16_HA
:
4323 case R_PPC_REL16DX_HA
:
4324 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4327 /* These are just markers. */
4329 case R_PPC_EMB_MRKREF
:
4333 case R_PPC_RELAX_PLT
:
4334 case R_PPC_RELAX_PLTREL24
:
4338 /* These should only appear in dynamic objects. */
4340 case R_PPC_GLOB_DAT
:
4341 case R_PPC_JMP_SLOT
:
4342 case R_PPC_RELATIVE
:
4343 case R_PPC_IRELATIVE
:
4346 /* These aren't handled yet. We'll report an error later. */
4348 case R_PPC_EMB_RELSEC16
:
4349 case R_PPC_EMB_RELST_LO
:
4350 case R_PPC_EMB_RELST_HI
:
4351 case R_PPC_EMB_RELST_HA
:
4352 case R_PPC_EMB_BIT_FLD
:
4355 /* This refers only to functions defined in the shared library. */
4356 case R_PPC_LOCAL24PC
:
4357 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4359 htab
->plt_type
= PLT_OLD
;
4360 htab
->old_bfd
= abfd
;
4362 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4365 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4370 /* This relocation describes the C++ object vtable hierarchy.
4371 Reconstruct it for later use during GC. */
4372 case R_PPC_GNU_VTINHERIT
:
4373 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4377 /* This relocation describes which C++ vtable entries are actually
4378 used. Record for later use during GC. */
4379 case R_PPC_GNU_VTENTRY
:
4380 BFD_ASSERT (h
!= NULL
);
4382 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4386 /* We shouldn't really be seeing TPREL32. */
4389 case R_PPC_TPREL16_LO
:
4390 case R_PPC_TPREL16_HI
:
4391 case R_PPC_TPREL16_HA
:
4392 if (bfd_link_dll (info
))
4393 info
->flags
|= DF_STATIC_TLS
;
4397 case R_PPC_DTPMOD32
:
4398 case R_PPC_DTPREL32
:
4404 && (sec
->flags
& SEC_CODE
) != 0
4405 && bfd_link_pic (info
)
4406 && htab
->plt_type
== PLT_UNSET
)
4408 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4409 the start of a function, which assembles to a REL32
4410 reference to .got2. If we detect one of these, then
4411 force the old PLT layout because the linker cannot
4412 reliably deduce the GOT pointer value needed for
4415 Elf_Internal_Sym
*isym
;
4417 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4422 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4425 htab
->plt_type
= PLT_OLD
;
4426 htab
->old_bfd
= abfd
;
4429 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4435 case R_PPC_ADDR16_LO
:
4436 case R_PPC_ADDR16_HI
:
4437 case R_PPC_ADDR16_HA
:
4440 if (h
!= NULL
&& !bfd_link_pic (info
))
4442 /* We may need a plt entry if the symbol turns out to be
4443 a function defined in a dynamic object. */
4444 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4447 /* We may need a copy reloc too. */
4449 h
->pointer_equality_needed
= 1;
4450 if (r_type
== R_PPC_ADDR16_HA
)
4451 ppc_elf_hash_entry (h
)->has_addr16_ha
= 1;
4452 if (r_type
== R_PPC_ADDR16_LO
)
4453 ppc_elf_hash_entry (h
)->has_addr16_lo
= 1;
4459 case R_PPC_REL14_BRTAKEN
:
4460 case R_PPC_REL14_BRNTAKEN
:
4463 if (h
== htab
->elf
.hgot
)
4465 if (htab
->plt_type
== PLT_UNSET
)
4467 htab
->plt_type
= PLT_OLD
;
4468 htab
->old_bfd
= abfd
;
4476 case R_PPC_ADDR14_BRTAKEN
:
4477 case R_PPC_ADDR14_BRNTAKEN
:
4478 if (h
!= NULL
&& !bfd_link_pic (info
))
4480 /* We may need a plt entry if the symbol turns out to be
4481 a function defined in a dynamic object. */
4483 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4489 /* If we are creating a shared library, and this is a reloc
4490 against a global symbol, or a non PC relative reloc
4491 against a local symbol, then we need to copy the reloc
4492 into the shared library. However, if we are linking with
4493 -Bsymbolic, we do not need to copy a reloc against a
4494 global symbol which is defined in an object we are
4495 including in the link (i.e., DEF_REGULAR is set). At
4496 this point we have not seen all the input files, so it is
4497 possible that DEF_REGULAR is not set now but will be set
4498 later (it is never cleared). In case of a weak definition,
4499 DEF_REGULAR may be cleared later by a strong definition in
4500 a shared library. We account for that possibility below by
4501 storing information in the dyn_relocs field of the hash
4502 table entry. A similar situation occurs when creating
4503 shared libraries and symbol visibility changes render the
4506 If on the other hand, we are creating an executable, we
4507 may need to keep relocations for symbols satisfied by a
4508 dynamic library if we manage to avoid copy relocs for the
4510 if ((bfd_link_pic (info
)
4511 && (must_be_dyn_reloc (info
, r_type
)
4513 && (!SYMBOLIC_BIND (info
, h
)
4514 || h
->root
.type
== bfd_link_hash_defweak
4515 || !h
->def_regular
))))
4516 || (ELIMINATE_COPY_RELOCS
4517 && !bfd_link_pic (info
)
4519 && (h
->root
.type
== bfd_link_hash_defweak
4520 || !h
->def_regular
)))
4524 "ppc_elf_check_relocs needs to "
4525 "create relocation for %s\n",
4526 (h
&& h
->root
.root
.string
4527 ? h
->root
.root
.string
: "<unknown>"));
4531 if (htab
->elf
.dynobj
== NULL
)
4532 htab
->elf
.dynobj
= abfd
;
4534 sreloc
= _bfd_elf_make_dynamic_reloc_section
4535 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4541 /* If this is a global symbol, we count the number of
4542 relocations we need for this symbol. */
4545 struct elf_dyn_relocs
*p
;
4546 struct elf_dyn_relocs
**rel_head
;
4548 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4550 if (p
== NULL
|| p
->sec
!= sec
)
4552 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4555 p
->next
= *rel_head
;
4562 if (!must_be_dyn_reloc (info
, r_type
))
4567 /* Track dynamic relocs needed for local syms too.
4568 We really need local syms available to do this
4570 struct ppc_dyn_relocs
*p
;
4571 struct ppc_dyn_relocs
**rel_head
;
4572 bfd_boolean is_ifunc
;
4575 Elf_Internal_Sym
*isym
;
4577 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4582 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4586 vpp
= &elf_section_data (s
)->local_dynrel
;
4587 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4588 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4590 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4592 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4594 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4597 p
->next
= *rel_head
;
4600 p
->ifunc
= is_ifunc
;
4614 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4615 and OBFD, and merge non-conflicting ones. */
4617 _bfd_elf_ppc_merge_fp_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4619 bfd
*obfd
= info
->output_bfd
;
4620 obj_attribute
*in_attr
, *in_attrs
;
4621 obj_attribute
*out_attr
, *out_attrs
;
4623 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4624 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4626 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4627 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4629 if (in_attr
->i
!= out_attr
->i
)
4631 int in_fp
= in_attr
->i
& 3;
4632 int out_fp
= out_attr
->i
& 3;
4636 else if (out_fp
== 0)
4639 out_attr
->i
^= in_fp
;
4641 else if (out_fp
!= 2 && in_fp
== 2)
4643 /* xgettext:c-format */
4644 (_("warning: %pB uses hard float, %pB uses soft float"), obfd
, ibfd
);
4645 else if (out_fp
== 2 && in_fp
!= 2)
4647 /* xgettext:c-format */
4648 (_("warning: %pB uses hard float, %pB uses soft float"), ibfd
, obfd
);
4649 else if (out_fp
== 1 && in_fp
== 3)
4651 /* xgettext:c-format */
4652 (_("warning: %pB uses double-precision hard float, "
4653 "%pB uses single-precision hard float"), obfd
, ibfd
);
4654 else if (out_fp
== 3 && in_fp
== 1)
4656 /* xgettext:c-format */
4657 (_("warning: %pB uses double-precision hard float, "
4658 "%pB uses single-precision hard float"), ibfd
, obfd
);
4660 in_fp
= in_attr
->i
& 0xc;
4661 out_fp
= out_attr
->i
& 0xc;
4664 else if (out_fp
== 0)
4667 out_attr
->i
^= in_fp
;
4669 else if (out_fp
!= 2 * 4 && in_fp
== 2 * 4)
4671 /* xgettext:c-format */
4672 (_("warning: %pB uses 64-bit long double, "
4673 "%pB uses 128-bit long double"), ibfd
, obfd
);
4674 else if (in_fp
!= 2 * 4 && out_fp
== 2 * 4)
4676 /* xgettext:c-format */
4677 (_("warning: %pB uses 64-bit long double, "
4678 "%pB uses 128-bit long double"), obfd
, ibfd
);
4679 else if (out_fp
== 1 * 4 && in_fp
== 3 * 4)
4681 /* xgettext:c-format */
4682 (_("warning: %pB uses IBM long double, "
4683 "%pB uses IEEE long double"), ibfd
, obfd
);
4684 else if (out_fp
== 3 * 4 && in_fp
== 1 * 4)
4686 /* xgettext:c-format */
4687 (_("warning: %pB uses IBM long double, "
4688 "%pB uses IEEE long double"), obfd
, ibfd
);
4692 /* Merge object attributes from IBFD into OBFD. Warn if
4693 there are conflicting attributes. */
4695 ppc_elf_merge_obj_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4698 obj_attribute
*in_attr
, *in_attrs
;
4699 obj_attribute
*out_attr
, *out_attrs
;
4701 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
4703 obfd
= info
->output_bfd
;
4704 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4705 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4707 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4708 merge non-conflicting ones. */
4709 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4710 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4711 if (in_attr
->i
!= out_attr
->i
)
4713 int in_vec
= in_attr
->i
& 3;
4714 int out_vec
= out_attr
->i
& 3;
4718 else if (out_vec
== 0)
4721 out_attr
->i
= in_vec
;
4723 /* For now, allow generic to transition to AltiVec or SPE
4724 without a warning. If GCC marked files with their stack
4725 alignment and used don't-care markings for files which are
4726 not affected by the vector ABI, we could warn about this
4728 else if (in_vec
== 1)
4730 else if (out_vec
== 1)
4733 out_attr
->i
= in_vec
;
4735 else if (out_vec
< in_vec
)
4737 /* xgettext:c-format */
4738 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4740 else if (out_vec
> in_vec
)
4742 /* xgettext:c-format */
4743 (_("warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4747 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4748 and merge non-conflicting ones. */
4749 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4750 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4751 if (in_attr
->i
!= out_attr
->i
)
4753 int in_struct
= in_attr
->i
& 3;
4754 int out_struct
= out_attr
->i
& 3;
4756 if (in_struct
== 0 || in_struct
== 3)
4758 else if (out_struct
== 0)
4761 out_attr
->i
= in_struct
;
4763 else if (out_struct
< in_struct
)
4765 /* xgettext:c-format */
4766 (_("warning: %pB uses r3/r4 for small structure returns, "
4767 "%pB uses memory"), obfd
, ibfd
);
4768 else if (out_struct
> in_struct
)
4770 /* xgettext:c-format */
4771 (_("warning: %pB uses r3/r4 for small structure returns, "
4772 "%pB uses memory"), ibfd
, obfd
);
4775 /* Merge Tag_compatibility attributes and any common GNU ones. */
4776 _bfd_elf_merge_object_attributes (ibfd
, info
);
4781 /* Merge backend specific data from an object file to the output
4782 object file when linking. */
4785 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4787 bfd
*obfd
= info
->output_bfd
;
4792 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4795 /* Check if we have the same endianness. */
4796 if (! _bfd_generic_verify_endian_match (ibfd
, info
))
4799 if (!ppc_elf_merge_obj_attributes (ibfd
, info
))
4802 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4803 old_flags
= elf_elfheader (obfd
)->e_flags
;
4804 if (!elf_flags_init (obfd
))
4806 /* First call, no flags set. */
4807 elf_flags_init (obfd
) = TRUE
;
4808 elf_elfheader (obfd
)->e_flags
= new_flags
;
4811 /* Compatible flags are ok. */
4812 else if (new_flags
== old_flags
)
4815 /* Incompatible flags. */
4818 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4819 to be linked with either. */
4821 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4822 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4826 (_("%pB: compiled with -mrelocatable and linked with "
4827 "modules compiled normally"), ibfd
);
4829 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4830 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4834 (_("%pB: compiled normally and linked with "
4835 "modules compiled with -mrelocatable"), ibfd
);
4838 /* The output is -mrelocatable-lib iff both the input files are. */
4839 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4840 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4842 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4843 but each input file is either -mrelocatable or -mrelocatable-lib. */
4844 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4845 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4846 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4847 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4849 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4850 any module uses it. */
4851 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4853 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4854 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4856 /* Warn about any other mismatches. */
4857 if (new_flags
!= old_flags
)
4861 /* xgettext:c-format */
4862 (_("%pB: uses different e_flags (%#x) fields "
4863 "than previous modules (%#x)"),
4864 ibfd
, new_flags
, old_flags
);
4869 bfd_set_error (bfd_error_bad_value
);
4878 ppc_elf_vle_split16 (bfd
*input_bfd
,
4879 asection
*input_section
,
4880 unsigned long offset
,
4883 split16_format_type split16_format
,
4886 unsigned int insn
, opcode
, top5
;
4888 insn
= bfd_get_32 (input_bfd
, loc
);
4889 opcode
= insn
& 0xfc00f800;
4890 if (opcode
== E_OR2I_INSN
4891 || opcode
== E_AND2I_DOT_INSN
4892 || opcode
== E_OR2IS_INSN
4893 || opcode
== E_LIS_INSN
4894 || opcode
== E_AND2IS_DOT_INSN
)
4896 if (split16_format
!= split16a_type
)
4899 split16_format
= split16a_type
;
4902 /* xgettext:c-format */
4903 (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
4904 input_bfd
, input_section
, offset
, opcode
);
4907 else if (opcode
== E_ADD2I_DOT_INSN
4908 || opcode
== E_ADD2IS_INSN
4909 || opcode
== E_CMP16I_INSN
4910 || opcode
== E_MULL2I_INSN
4911 || opcode
== E_CMPL16I_INSN
4912 || opcode
== E_CMPH16I_INSN
4913 || opcode
== E_CMPHL16I_INSN
)
4915 if (split16_format
!= split16d_type
)
4918 split16_format
= split16d_type
;
4921 /* xgettext:c-format */
4922 (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
4923 input_bfd
, input_section
, offset
, opcode
);
4926 top5
= value
& 0xf800;
4927 top5
= top5
<< (split16_format
== split16a_type
? 5 : 10);
4928 insn
&= (split16_format
== split16a_type
? ~0x1f07ff : ~0x3e007ff);
4930 insn
|= value
& 0x7ff;
4931 bfd_put_32 (input_bfd
, insn
, loc
);
4935 ppc_elf_vle_split20 (bfd
*output_bfd
, bfd_byte
*loc
, bfd_vma value
)
4939 insn
= bfd_get_32 (output_bfd
, loc
);
4940 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4941 /* Top 4 bits of value to 17..20. */
4942 insn
|= (value
& 0xf0000) >> 5;
4943 /* Next 5 bits of the value to 11..15. */
4944 insn
|= (value
& 0xf800) << 5;
4945 /* And the final 11 bits of the value to bits 21 to 31. */
4946 insn
|= value
& 0x7ff;
4947 bfd_put_32 (output_bfd
, insn
, loc
);
4951 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4952 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4954 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4955 struct bfd_link_info
*info
)
4957 struct ppc_elf_link_hash_table
*htab
;
4960 htab
= ppc_elf_hash_table (info
);
4962 if (htab
->plt_type
== PLT_UNSET
)
4964 struct elf_link_hash_entry
*h
;
4966 if (htab
->params
->plt_style
== PLT_OLD
)
4967 htab
->plt_type
= PLT_OLD
;
4968 else if (bfd_link_pic (info
)
4969 && htab
->elf
.dynamic_sections_created
4970 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
4971 FALSE
, FALSE
, TRUE
)) != NULL
4972 && (h
->type
== STT_FUNC
4975 && !(SYMBOL_CALLS_LOCAL (info
, h
)
4976 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
4978 /* Profiling of shared libs (and pies) is not supported with
4979 secure plt, because ppc32 does profiling before a
4980 function prologue and a secure plt pic call stubs needs
4981 r30 to be set up. */
4982 htab
->plt_type
= PLT_OLD
;
4987 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
4989 /* Look through the reloc flags left by ppc_elf_check_relocs.
4990 Use the old style bss plt if a file makes plt calls
4991 without using the new relocs, and if ld isn't given
4992 --secure-plt and we never see REL16 relocs. */
4993 if (plt_type
== PLT_UNSET
)
4995 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
4996 if (is_ppc_elf (ibfd
))
4998 if (ppc_elf_tdata (ibfd
)->has_rel16
)
5000 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
5003 htab
->old_bfd
= ibfd
;
5007 htab
->plt_type
= plt_type
;
5010 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
5012 if (htab
->old_bfd
!= NULL
)
5013 _bfd_error_handler (_("bss-plt forced due to %pB"), htab
->old_bfd
);
5015 _bfd_error_handler (_("bss-plt forced by profiling"));
5018 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
5020 if (htab
->plt_type
== PLT_NEW
)
5022 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
5023 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
5025 /* The new PLT is a loaded section. */
5026 if (htab
->elf
.splt
!= NULL
5027 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->elf
.splt
, flags
))
5030 /* The new GOT is not executable. */
5031 if (htab
->elf
.sgot
!= NULL
5032 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->elf
.sgot
, flags
))
5037 /* Stop an unused .glink section from affecting .text alignment. */
5038 if (htab
->glink
!= NULL
5039 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
5042 return htab
->plt_type
== PLT_NEW
;
5045 /* Return the section that should be marked against GC for a given
5049 ppc_elf_gc_mark_hook (asection
*sec
,
5050 struct bfd_link_info
*info
,
5051 Elf_Internal_Rela
*rel
,
5052 struct elf_link_hash_entry
*h
,
5053 Elf_Internal_Sym
*sym
)
5056 switch (ELF32_R_TYPE (rel
->r_info
))
5058 case R_PPC_GNU_VTINHERIT
:
5059 case R_PPC_GNU_VTENTRY
:
5063 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5066 /* Set plt output section type, htab->tls_get_addr, and call the
5067 generic ELF tls_setup function. */
5070 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5072 struct ppc_elf_link_hash_table
*htab
;
5074 htab
= ppc_elf_hash_table (info
);
5075 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5076 FALSE
, FALSE
, TRUE
);
5077 if (htab
->plt_type
!= PLT_NEW
)
5078 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5080 if (!htab
->params
->no_tls_get_addr_opt
)
5082 struct elf_link_hash_entry
*opt
, *tga
;
5083 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5084 FALSE
, FALSE
, TRUE
);
5086 && (opt
->root
.type
== bfd_link_hash_defined
5087 || opt
->root
.type
== bfd_link_hash_defweak
))
5089 /* If glibc supports an optimized __tls_get_addr call stub,
5090 signalled by the presence of __tls_get_addr_opt, and we'll
5091 be calling __tls_get_addr via a plt call stub, then
5092 make __tls_get_addr point to __tls_get_addr_opt. */
5093 tga
= htab
->tls_get_addr
;
5094 if (htab
->elf
.dynamic_sections_created
5096 && (tga
->type
== STT_FUNC
5098 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5099 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga
)))
5101 struct plt_entry
*ent
;
5102 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5103 if (ent
->plt
.refcount
> 0)
5107 tga
->root
.type
= bfd_link_hash_indirect
;
5108 tga
->root
.u
.i
.link
= &opt
->root
;
5109 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5111 if (opt
->dynindx
!= -1)
5113 /* Use __tls_get_addr_opt in dynamic relocations. */
5115 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5117 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5120 htab
->tls_get_addr
= opt
;
5125 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5127 if (htab
->plt_type
== PLT_NEW
5128 && htab
->elf
.splt
!= NULL
5129 && htab
->elf
.splt
->output_section
!= NULL
)
5131 elf_section_type (htab
->elf
.splt
->output_section
) = SHT_PROGBITS
;
5132 elf_section_flags (htab
->elf
.splt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5135 return _bfd_elf_tls_setup (obfd
, info
);
5138 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5142 branch_reloc_hash_match (const bfd
*ibfd
,
5143 const Elf_Internal_Rela
*rel
,
5144 const struct elf_link_hash_entry
*hash
)
5146 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5147 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5148 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5150 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5152 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5153 struct elf_link_hash_entry
*h
;
5155 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5156 while (h
->root
.type
== bfd_link_hash_indirect
5157 || h
->root
.type
== bfd_link_hash_warning
)
5158 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5165 /* Run through all the TLS relocs looking for optimization
5169 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5170 struct bfd_link_info
*info
)
5174 struct ppc_elf_link_hash_table
*htab
;
5177 if (!bfd_link_executable (info
))
5180 htab
= ppc_elf_hash_table (info
);
5184 /* Make two passes through the relocs. First time check that tls
5185 relocs involved in setting up a tls_get_addr call are indeed
5186 followed by such a call. If they are not, don't do any tls
5187 optimization. On the second pass twiddle tls_mask flags to
5188 notify relocate_section that optimization can be done, and
5189 adjust got and plt refcounts. */
5190 for (pass
= 0; pass
< 2; ++pass
)
5191 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
5193 Elf_Internal_Sym
*locsyms
= NULL
;
5194 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5195 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5197 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5198 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5200 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5201 int expecting_tls_get_addr
= 0;
5203 /* Read the relocations. */
5204 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5206 if (relstart
== NULL
)
5209 relend
= relstart
+ sec
->reloc_count
;
5210 for (rel
= relstart
; rel
< relend
; rel
++)
5212 enum elf_ppc_reloc_type r_type
;
5213 unsigned long r_symndx
;
5214 struct elf_link_hash_entry
*h
= NULL
;
5216 char tls_set
, tls_clear
;
5217 bfd_boolean is_local
;
5218 bfd_signed_vma
*got_count
;
5220 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5221 if (r_symndx
>= symtab_hdr
->sh_info
)
5223 struct elf_link_hash_entry
**sym_hashes
;
5225 sym_hashes
= elf_sym_hashes (ibfd
);
5226 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5227 while (h
->root
.type
== bfd_link_hash_indirect
5228 || h
->root
.type
== bfd_link_hash_warning
)
5229 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5237 r_type
= ELF32_R_TYPE (rel
->r_info
);
5238 /* If this section has old-style __tls_get_addr calls
5239 without marker relocs, then check that each
5240 __tls_get_addr call reloc is preceded by a reloc
5241 that conceivably belongs to the __tls_get_addr arg
5242 setup insn. If we don't find matching arg setup
5243 relocs, don't do any tls optimization. */
5245 && sec
->has_tls_get_addr_call
5247 && h
== htab
->tls_get_addr
5248 && !expecting_tls_get_addr
5249 && is_branch_reloc (r_type
))
5251 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5252 "TLS optimization disabled\n",
5253 ibfd
, sec
, rel
->r_offset
);
5254 if (elf_section_data (sec
)->relocs
!= relstart
)
5259 expecting_tls_get_addr
= 0;
5262 case R_PPC_GOT_TLSLD16
:
5263 case R_PPC_GOT_TLSLD16_LO
:
5264 expecting_tls_get_addr
= 1;
5267 case R_PPC_GOT_TLSLD16_HI
:
5268 case R_PPC_GOT_TLSLD16_HA
:
5269 /* These relocs should never be against a symbol
5270 defined in a shared lib. Leave them alone if
5271 that turns out to be the case. */
5280 case R_PPC_GOT_TLSGD16
:
5281 case R_PPC_GOT_TLSGD16_LO
:
5282 expecting_tls_get_addr
= 1;
5285 case R_PPC_GOT_TLSGD16_HI
:
5286 case R_PPC_GOT_TLSGD16_HA
:
5292 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5296 case R_PPC_GOT_TPREL16
:
5297 case R_PPC_GOT_TPREL16_LO
:
5298 case R_PPC_GOT_TPREL16_HI
:
5299 case R_PPC_GOT_TPREL16_HA
:
5304 tls_clear
= TLS_TPREL
;
5312 expecting_tls_get_addr
= 2;
5323 if (!expecting_tls_get_addr
5324 || (expecting_tls_get_addr
== 1
5325 && !sec
->has_tls_get_addr_call
))
5328 if (rel
+ 1 < relend
5329 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5330 htab
->tls_get_addr
))
5333 /* Uh oh, we didn't find the expected call. We
5334 could just mark this symbol to exclude it
5335 from tls optimization but it's safer to skip
5336 the entire optimization. */
5337 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5338 "TLS optimization disabled\n"),
5339 ibfd
, sec
, rel
->r_offset
);
5340 if (elf_section_data (sec
)->relocs
!= relstart
)
5345 if (expecting_tls_get_addr
)
5347 struct plt_entry
*ent
;
5350 if (bfd_link_pic (info
)
5351 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5352 addend
= rel
[1].r_addend
;
5353 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5355 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5356 ent
->plt
.refcount
-= 1;
5358 if (expecting_tls_get_addr
== 2)
5364 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5365 got_count
= &h
->got
.refcount
;
5369 bfd_signed_vma
*lgot_refs
;
5370 struct plt_entry
**local_plt
;
5373 if (locsyms
== NULL
)
5375 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5376 if (locsyms
== NULL
)
5377 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5378 symtab_hdr
->sh_info
,
5379 0, NULL
, NULL
, NULL
);
5380 if (locsyms
== NULL
)
5382 if (elf_section_data (sec
)->relocs
!= relstart
)
5387 lgot_refs
= elf_local_got_refcounts (ibfd
);
5388 if (lgot_refs
== NULL
)
5390 local_plt
= (struct plt_entry
**)
5391 (lgot_refs
+ symtab_hdr
->sh_info
);
5392 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
5393 tls_mask
= &lgot_masks
[r_symndx
];
5394 got_count
= &lgot_refs
[r_symndx
];
5399 /* We managed to get rid of a got entry. */
5404 *tls_mask
|= tls_set
;
5405 *tls_mask
&= ~tls_clear
;
5408 if (elf_section_data (sec
)->relocs
!= relstart
)
5413 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
5415 if (!info
->keep_memory
)
5418 symtab_hdr
->contents
= (unsigned char *) locsyms
;
5421 htab
->do_tls_opt
= 1;
5425 /* Find dynamic relocs for H that apply to read-only sections. */
5428 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5430 struct elf_dyn_relocs
*p
;
5432 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5434 asection
*s
= p
->sec
->output_section
;
5436 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5442 /* Return true if we have dynamic relocs against H or any of its weak
5443 aliases, that apply to read-only sections. Cannot be used after
5444 size_dynamic_sections. */
5447 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5449 struct ppc_elf_link_hash_entry
*eh
= ppc_elf_hash_entry (h
);
5452 if (readonly_dynrelocs (&eh
->elf
))
5454 eh
= ppc_elf_hash_entry (eh
->elf
.u
.alias
);
5455 } while (eh
!= NULL
&& &eh
->elf
!= h
);
5460 /* Return whether H has pc-relative dynamic relocs. */
5463 pc_dynrelocs (struct elf_link_hash_entry
*h
)
5465 struct elf_dyn_relocs
*p
;
5467 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5468 if (p
->pc_count
!= 0)
5473 /* Adjust a symbol defined by a dynamic object and referenced by a
5474 regular object. The current definition is in some section of the
5475 dynamic object, but we're not including those sections. We have to
5476 change the definition to something the rest of the link can
5480 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5481 struct elf_link_hash_entry
*h
)
5483 struct ppc_elf_link_hash_table
*htab
;
5487 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5488 h
->root
.root
.string
);
5491 /* Make sure we know what is going on here. */
5492 htab
= ppc_elf_hash_table (info
);
5493 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5495 || h
->type
== STT_GNU_IFUNC
5499 && !h
->def_regular
)));
5501 /* Deal with function syms. */
5502 if (h
->type
== STT_FUNC
5503 || h
->type
== STT_GNU_IFUNC
5506 bfd_boolean local
= (SYMBOL_CALLS_LOCAL (info
, h
)
5507 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
5508 /* Discard dyn_relocs when non-pic if we've decided that a
5509 function symbol is local. */
5510 if (!bfd_link_pic (info
) && local
)
5511 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5513 /* Clear procedure linkage table information for any symbol that
5514 won't need a .plt entry. */
5515 struct plt_entry
*ent
;
5516 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5517 if (ent
->plt
.refcount
> 0)
5520 || (h
->type
!= STT_GNU_IFUNC
&& local
))
5522 /* A PLT entry is not required/allowed when:
5524 1. We are not using ld.so; because then the PLT entry
5525 can't be set up, so we can't use one. In this case,
5526 ppc_elf_adjust_dynamic_symbol won't even be called.
5528 2. GC has rendered the entry unused.
5530 3. We know for certain that a call to this symbol
5531 will go to this object, or will remain undefined. */
5532 h
->plt
.plist
= NULL
;
5534 h
->pointer_equality_needed
= 0;
5538 /* Taking a function's address in a read/write section
5539 doesn't require us to define the function symbol in the
5540 executable on a plt call stub. A dynamic reloc can
5541 be used instead, giving better runtime performance.
5542 (Calls via that function pointer don't need to bounce
5543 through the plt call stub.) Similarly, use a dynamic
5544 reloc for a weak reference when possible, allowing the
5545 resolution of the symbol to be set at load time rather
5547 if ((h
->pointer_equality_needed
5549 && !h
->ref_regular_nonweak
5550 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
5551 && !htab
->is_vxworks
5552 && !ppc_elf_hash_entry (h
)->has_sda_refs
5553 && !readonly_dynrelocs (h
))
5555 h
->pointer_equality_needed
= 0;
5556 /* If we haven't seen a branch reloc then we don't need
5559 h
->plt
.plist
= NULL
;
5561 else if (!bfd_link_pic (info
))
5562 /* We are going to be defining the function symbol on the
5563 plt stub, so no dyn_relocs needed when non-pic. */
5564 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5566 h
->protected_def
= 0;
5567 /* Function symbols can't have copy relocs. */
5571 h
->plt
.plist
= NULL
;
5573 /* If this is a weak symbol, and there is a real definition, the
5574 processor independent code will have arranged for us to see the
5575 real definition first, and we can just use the same value. */
5576 if (h
->is_weakalias
)
5578 struct elf_link_hash_entry
*def
= weakdef (h
);
5579 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
5580 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
5581 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
5582 if (def
->root
.u
.def
.section
== htab
->elf
.sdynbss
5583 || def
->root
.u
.def
.section
== htab
->elf
.sdynrelro
5584 || def
->root
.u
.def
.section
== htab
->dynsbss
)
5585 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5589 /* This is a reference to a symbol defined by a dynamic object which
5590 is not a function. */
5592 /* If we are creating a shared library, we must presume that the
5593 only references to the symbol are via the global offset table.
5594 For such cases we need not do anything here; the relocations will
5595 be handled correctly by relocate_section. */
5596 if (bfd_link_pic (info
))
5598 h
->protected_def
= 0;
5602 /* If there are no references to this symbol that do not use the
5603 GOT, we don't need to generate a copy reloc. */
5604 if (!h
->non_got_ref
)
5606 h
->protected_def
= 0;
5610 /* Protected variables do not work with .dynbss. The copy in
5611 .dynbss won't be used by the shared library with the protected
5612 definition for the variable. Editing to PIC, or text relocations
5613 are preferable to an incorrect program. */
5614 if (h
->protected_def
)
5616 if (ELIMINATE_COPY_RELOCS
5617 && ppc_elf_hash_entry (h
)->has_addr16_ha
5618 && ppc_elf_hash_entry (h
)->has_addr16_lo
5619 && htab
->params
->pic_fixup
== 0
5620 && info
->disable_target_specific_optimizations
<= 1)
5621 htab
->params
->pic_fixup
= 1;
5625 /* If -z nocopyreloc was given, we won't generate them either. */
5626 if (info
->nocopyreloc
)
5629 /* If we don't find any dynamic relocs in read-only sections, then
5630 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5631 We can't do this if there are any small data relocations. This
5632 doesn't work on VxWorks, where we can not have dynamic
5633 relocations (other than copy and jump slot relocations) in an
5635 if (ELIMINATE_COPY_RELOCS
5636 && !ppc_elf_hash_entry (h
)->has_sda_refs
5637 && !htab
->is_vxworks
5639 && !alias_readonly_dynrelocs (h
))
5642 /* We must allocate the symbol in our .dynbss section, which will
5643 become part of the .bss section of the executable. There will be
5644 an entry for this symbol in the .dynsym section. The dynamic
5645 object will contain position independent code, so all references
5646 from the dynamic object to this symbol will go through the global
5647 offset table. The dynamic linker will use the .dynsym entry to
5648 determine the address it must put in the global offset table, so
5649 both the dynamic object and the regular object will refer to the
5650 same memory location for the variable.
5652 Of course, if the symbol is referenced using SDAREL relocs, we
5653 must instead allocate it in .sbss. */
5654 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5656 else if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
5657 s
= htab
->elf
.sdynrelro
;
5659 s
= htab
->elf
.sdynbss
;
5660 BFD_ASSERT (s
!= NULL
);
5662 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5666 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5667 linker to copy the initial value out of the dynamic object
5668 and into the runtime process image. */
5669 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5670 srel
= htab
->relsbss
;
5671 else if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
5672 srel
= htab
->elf
.sreldynrelro
;
5674 srel
= htab
->elf
.srelbss
;
5675 BFD_ASSERT (srel
!= NULL
);
5676 srel
->size
+= sizeof (Elf32_External_Rela
);
5680 /* We no longer want dyn_relocs. */
5681 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5682 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
5685 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5686 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5687 specifying the addend on the plt relocation. For -fpic code, the sym
5688 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5689 xxxxxxxx.got2.plt_pic32.<callee>. */
5692 add_stub_sym (struct plt_entry
*ent
,
5693 struct elf_link_hash_entry
*h
,
5694 struct bfd_link_info
*info
)
5696 struct elf_link_hash_entry
*sh
;
5697 size_t len1
, len2
, len3
;
5700 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5702 if (bfd_link_pic (info
))
5703 stub
= ".plt_pic32.";
5705 stub
= ".plt_call32.";
5707 len1
= strlen (h
->root
.root
.string
);
5708 len2
= strlen (stub
);
5711 len3
= strlen (ent
->sec
->name
);
5712 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5715 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5717 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5718 memcpy (name
+ 8 + len3
, stub
, len2
);
5719 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5720 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5723 if (sh
->root
.type
== bfd_link_hash_new
)
5725 sh
->root
.type
= bfd_link_hash_defined
;
5726 sh
->root
.u
.def
.section
= htab
->glink
;
5727 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5728 sh
->ref_regular
= 1;
5729 sh
->def_regular
= 1;
5730 sh
->ref_regular_nonweak
= 1;
5731 sh
->forced_local
= 1;
5733 sh
->root
.linker_def
= 1;
5738 /* Allocate NEED contiguous space in .got, and return the offset.
5739 Handles allocation of the got header when crossing 32k. */
5742 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5745 unsigned int max_before_header
;
5747 if (htab
->plt_type
== PLT_VXWORKS
)
5749 where
= htab
->elf
.sgot
->size
;
5750 htab
->elf
.sgot
->size
+= need
;
5754 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5755 if (need
<= htab
->got_gap
)
5757 where
= max_before_header
- htab
->got_gap
;
5758 htab
->got_gap
-= need
;
5762 if (htab
->elf
.sgot
->size
+ need
> max_before_header
5763 && htab
->elf
.sgot
->size
<= max_before_header
)
5765 htab
->got_gap
= max_before_header
- htab
->elf
.sgot
->size
;
5766 htab
->elf
.sgot
->size
= max_before_header
+ htab
->got_header_size
;
5768 where
= htab
->elf
.sgot
->size
;
5769 htab
->elf
.sgot
->size
+= need
;
5775 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5776 TLS_LD is excluded because those go in a special GOT slot. */
5778 static inline unsigned int
5779 got_entries_needed (int tls_mask
)
5782 if ((tls_mask
& TLS_TLS
) == 0)
5787 if ((tls_mask
& TLS_GD
) != 0)
5789 if ((tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5791 if ((tls_mask
& TLS_DTPREL
) != 0)
5797 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5798 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5801 static inline unsigned int
5802 got_relocs_needed (int tls_mask
, unsigned int need
, bfd_boolean known
)
5804 /* All the entries we allocated need relocs.
5805 Except IE in executable with a local symbol. We could also omit
5806 the DTPREL reloc on the second word of a GD entry under the same
5807 condition as that for IE, but ld.so needs to differentiate
5808 LD and GD entries. */
5809 if ((tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0 && known
)
5811 return need
* sizeof (Elf32_External_Rela
) / 4;
5814 /* If H is undefined, make it dynamic if that makes sense. */
5817 ensure_undef_dynamic (struct bfd_link_info
*info
,
5818 struct elf_link_hash_entry
*h
)
5820 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5822 if (htab
->dynamic_sections_created
5823 && ((info
->dynamic_undefined_weak
!= 0
5824 && h
->root
.type
== bfd_link_hash_undefweak
)
5825 || h
->root
.type
== bfd_link_hash_undefined
)
5828 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
5829 return bfd_elf_link_record_dynamic_symbol (info
, h
);
5833 /* Allocate space in associated reloc sections for dynamic relocs. */
5836 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5838 struct bfd_link_info
*info
= inf
;
5839 struct ppc_elf_link_hash_entry
*eh
;
5840 struct ppc_elf_link_hash_table
*htab
;
5841 struct elf_dyn_relocs
*p
;
5844 if (h
->root
.type
== bfd_link_hash_indirect
)
5847 htab
= ppc_elf_hash_table (info
);
5848 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5849 if (eh
->elf
.got
.refcount
> 0
5850 || (ELIMINATE_COPY_RELOCS
5851 && !eh
->elf
.def_regular
5852 && eh
->elf
.protected_def
5853 && eh
->has_addr16_ha
5854 && eh
->has_addr16_lo
5855 && htab
->params
->pic_fixup
> 0))
5859 /* Make sure this symbol is output as a dynamic symbol. */
5860 if (!ensure_undef_dynamic (info
, &eh
->elf
))
5864 if ((eh
->tls_mask
& TLS_LD
) != 0)
5866 if (!eh
->elf
.def_dynamic
)
5867 /* We'll just use htab->tlsld_got.offset. This should
5868 always be the case. It's a little odd if we have
5869 a local dynamic reloc against a non-local symbol. */
5870 htab
->tlsld_got
.refcount
+= 1;
5874 need
+= got_entries_needed (eh
->tls_mask
);
5876 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5879 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5880 if ((bfd_link_pic (info
)
5881 || (htab
->elf
.dynamic_sections_created
5882 && eh
->elf
.dynindx
!= -1
5883 && !SYMBOL_REFERENCES_LOCAL (info
, &eh
->elf
)))
5884 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &eh
->elf
))
5887 bfd_boolean tprel_known
= (bfd_link_executable (info
)
5888 && SYMBOL_REFERENCES_LOCAL (info
,
5891 need
= got_relocs_needed (eh
->tls_mask
, need
, tprel_known
);
5892 if ((eh
->tls_mask
& TLS_LD
) != 0 && eh
->elf
.def_dynamic
)
5893 need
-= sizeof (Elf32_External_Rela
);
5894 rsec
= htab
->elf
.srelgot
;
5895 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5896 rsec
= htab
->elf
.irelplt
;
5902 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5904 /* If no dynamic sections we can't have dynamic relocs, except for
5905 IFUNCs which are handled even in static executables. */
5906 if (!htab
->elf
.dynamic_sections_created
5907 && h
->type
!= STT_GNU_IFUNC
)
5908 eh
->dyn_relocs
= NULL
;
5910 /* Discard relocs on undefined symbols that must be local. */
5911 else if (h
->root
.type
== bfd_link_hash_undefined
5912 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
5913 eh
->dyn_relocs
= NULL
;
5915 /* Also discard relocs on undefined weak syms with non-default
5916 visibility, or when dynamic_undefined_weak says so. */
5917 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
5918 eh
->dyn_relocs
= NULL
;
5920 if (eh
->dyn_relocs
== NULL
)
5923 /* In the shared -Bsymbolic case, discard space allocated for
5924 dynamic pc-relative relocs against symbols which turn out to be
5925 defined in regular objects. For the normal shared case, discard
5926 space for relocs that have become local due to symbol visibility
5928 else if (bfd_link_pic (info
))
5930 /* Relocs that use pc_count are those that appear on a call insn,
5931 or certain REL relocs (see must_be_dyn_reloc) that can be
5932 generated via assembly. We want calls to protected symbols to
5933 resolve directly to the function rather than going via the plt.
5934 If people want function pointer comparisons to work as expected
5935 then they should avoid writing weird assembly. */
5936 if (SYMBOL_CALLS_LOCAL (info
, h
))
5938 struct elf_dyn_relocs
**pp
;
5940 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5942 p
->count
-= p
->pc_count
;
5951 if (htab
->is_vxworks
)
5953 struct elf_dyn_relocs
**pp
;
5955 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5957 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
5964 if (eh
->dyn_relocs
!= NULL
)
5966 /* Make sure this symbol is output as a dynamic symbol. */
5967 if (!ensure_undef_dynamic (info
, h
))
5971 else if (ELIMINATE_COPY_RELOCS
)
5973 /* For the non-pic case, discard space for relocs against
5974 symbols which turn out to need copy relocs or are not
5976 if (h
->dynamic_adjusted
5978 && !ELF_COMMON_DEF_P (h
)
5979 && !(h
->protected_def
5980 && eh
->has_addr16_ha
5981 && eh
->has_addr16_lo
5982 && htab
->params
->pic_fixup
> 0))
5984 /* Make sure this symbol is output as a dynamic symbol. */
5985 if (!ensure_undef_dynamic (info
, h
))
5988 if (h
->dynindx
== -1)
5989 eh
->dyn_relocs
= NULL
;
5992 eh
->dyn_relocs
= NULL
;
5995 /* Allocate space. */
5996 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5998 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5999 if (eh
->elf
.type
== STT_GNU_IFUNC
)
6000 sreloc
= htab
->elf
.irelplt
;
6001 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6004 /* Handle PLT relocs. Done last, after dynindx has settled. */
6005 dyn
= htab
->elf
.dynamic_sections_created
&& h
->dynindx
!= -1;
6006 if (dyn
|| h
->type
== STT_GNU_IFUNC
)
6008 struct plt_entry
*ent
;
6009 bfd_boolean doneone
= FALSE
;
6010 bfd_vma plt_offset
= 0, glink_offset
= 0;
6012 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6013 if (ent
->plt
.refcount
> 0)
6015 asection
*s
= htab
->elf
.splt
;
6020 if (htab
->plt_type
== PLT_NEW
|| !dyn
)
6024 plt_offset
= s
->size
;
6027 ent
->plt
.offset
= plt_offset
;
6030 if (!doneone
|| bfd_link_pic (info
))
6032 glink_offset
= s
->size
;
6033 s
->size
+= GLINK_ENTRY_SIZE (htab
, h
);
6036 && !bfd_link_pic (info
)
6040 h
->root
.u
.def
.section
= s
;
6041 h
->root
.u
.def
.value
= glink_offset
;
6043 ent
->glink_offset
= glink_offset
;
6045 if (htab
->params
->emit_stub_syms
6046 && !add_stub_sym (ent
, h
, info
))
6053 /* If this is the first .plt entry, make room
6054 for the special first entry. */
6056 s
->size
+= htab
->plt_initial_entry_size
;
6058 /* The PowerPC PLT is actually composed of two
6059 parts, the first part is 2 words (for a load
6060 and a jump), and then there is a remaining
6061 word available at the end. */
6062 plt_offset
= (htab
->plt_initial_entry_size
6063 + (htab
->plt_slot_size
6065 - htab
->plt_initial_entry_size
)
6066 / htab
->plt_entry_size
)));
6068 /* If this symbol is not defined in a regular
6069 file, and we are not generating a shared
6070 library, then set the symbol to this location
6071 in the .plt. This is to avoid text
6072 relocations, and is required to make
6073 function pointers compare as equal between
6074 the normal executable and the shared library. */
6075 if (! bfd_link_pic (info
)
6079 h
->root
.u
.def
.section
= s
;
6080 h
->root
.u
.def
.value
= plt_offset
;
6083 /* Make room for this entry. */
6084 s
->size
+= htab
->plt_entry_size
;
6085 /* After the 8192nd entry, room for two entries
6087 if (htab
->plt_type
== PLT_OLD
6088 && (s
->size
- htab
->plt_initial_entry_size
)
6089 / htab
->plt_entry_size
6090 > PLT_NUM_SINGLE_ENTRIES
)
6091 s
->size
+= htab
->plt_entry_size
;
6093 ent
->plt
.offset
= plt_offset
;
6096 /* We also need to make an entry in the .rela.plt section. */
6100 htab
->elf
.irelplt
->size
+= sizeof (Elf32_External_Rela
);
6103 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
6105 if (htab
->plt_type
== PLT_VXWORKS
)
6107 /* Allocate space for the unloaded relocations. */
6108 if (!bfd_link_pic (info
)
6109 && htab
->elf
.dynamic_sections_created
)
6112 == (bfd_vma
) htab
->plt_initial_entry_size
)
6114 htab
->srelplt2
->size
6115 += (sizeof (Elf32_External_Rela
)
6116 * VXWORKS_PLTRESOLVE_RELOCS
);
6119 htab
->srelplt2
->size
6120 += (sizeof (Elf32_External_Rela
)
6121 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
6124 /* Every PLT entry has an associated GOT entry in
6126 htab
->elf
.sgotplt
->size
+= 4;
6133 ent
->plt
.offset
= (bfd_vma
) -1;
6137 h
->plt
.plist
= NULL
;
6143 h
->plt
.plist
= NULL
;
6150 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6151 read-only sections. */
6154 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
6158 if (h
->root
.type
== bfd_link_hash_indirect
)
6161 sec
= readonly_dynrelocs (h
);
6164 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
6166 info
->flags
|= DF_TEXTREL
;
6167 info
->callbacks
->minfo
6168 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
6169 sec
->owner
, h
->root
.root
.string
, sec
);
6171 /* Not an error, just cut short the traversal. */
6177 static const unsigned char glink_eh_frame_cie
[] =
6179 0, 0, 0, 16, /* length. */
6180 0, 0, 0, 0, /* id. */
6181 1, /* CIE version. */
6182 'z', 'R', 0, /* Augmentation string. */
6183 4, /* Code alignment. */
6184 0x7c, /* Data alignment. */
6186 1, /* Augmentation size. */
6187 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6188 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6191 /* Set the sizes of the dynamic sections. */
6194 ppc_elf_size_dynamic_sections (bfd
*output_bfd
,
6195 struct bfd_link_info
*info
)
6197 struct ppc_elf_link_hash_table
*htab
;
6203 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6206 htab
= ppc_elf_hash_table (info
);
6207 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6209 if (elf_hash_table (info
)->dynamic_sections_created
)
6211 /* Set the contents of the .interp section to the interpreter. */
6212 if (bfd_link_executable (info
) && !info
->nointerp
)
6214 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6215 BFD_ASSERT (s
!= NULL
);
6216 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6217 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6221 if (htab
->plt_type
== PLT_OLD
)
6222 htab
->got_header_size
= 16;
6223 else if (htab
->plt_type
== PLT_NEW
)
6224 htab
->got_header_size
= 12;
6226 /* Set up .got offsets for local syms, and space for local dynamic
6228 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
6230 bfd_signed_vma
*local_got
;
6231 bfd_signed_vma
*end_local_got
;
6232 struct plt_entry
**local_plt
;
6233 struct plt_entry
**end_local_plt
;
6235 bfd_size_type locsymcount
;
6236 Elf_Internal_Shdr
*symtab_hdr
;
6238 if (!is_ppc_elf (ibfd
))
6241 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6243 struct ppc_dyn_relocs
*p
;
6245 for (p
= ((struct ppc_dyn_relocs
*)
6246 elf_section_data (s
)->local_dynrel
);
6250 if (!bfd_is_abs_section (p
->sec
)
6251 && bfd_is_abs_section (p
->sec
->output_section
))
6253 /* Input section has been discarded, either because
6254 it is a copy of a linkonce section or due to
6255 linker script /DISCARD/, so we'll be discarding
6258 else if (htab
->is_vxworks
6259 && strcmp (p
->sec
->output_section
->name
,
6262 /* Relocations in vxworks .tls_vars sections are
6263 handled specially by the loader. */
6265 else if (p
->count
!= 0)
6267 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6269 sreloc
= htab
->elf
.irelplt
;
6270 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6271 if ((p
->sec
->output_section
->flags
6272 & (SEC_READONLY
| SEC_ALLOC
))
6273 == (SEC_READONLY
| SEC_ALLOC
))
6275 info
->flags
|= DF_TEXTREL
;
6276 info
->callbacks
->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
6277 p
->sec
->owner
, p
->sec
);
6283 local_got
= elf_local_got_refcounts (ibfd
);
6287 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6288 locsymcount
= symtab_hdr
->sh_info
;
6289 end_local_got
= local_got
+ locsymcount
;
6290 local_plt
= (struct plt_entry
**) end_local_got
;
6291 end_local_plt
= local_plt
+ locsymcount
;
6292 lgot_masks
= (char *) end_local_plt
;
6294 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6298 if ((*lgot_masks
& TLS_LD
) != 0)
6299 htab
->tlsld_got
.refcount
+= 1;
6300 need
= got_entries_needed (*lgot_masks
);
6302 *local_got
= (bfd_vma
) -1;
6305 *local_got
= allocate_got (htab
, need
);
6306 if (bfd_link_pic (info
))
6309 bfd_boolean tprel_known
= bfd_link_executable (info
);
6311 need
= got_relocs_needed (*lgot_masks
, need
, tprel_known
);
6312 srel
= htab
->elf
.srelgot
;
6313 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6314 srel
= htab
->elf
.irelplt
;
6320 *local_got
= (bfd_vma
) -1;
6322 if (htab
->is_vxworks
)
6325 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6326 for (; local_plt
< end_local_plt
; ++local_plt
)
6328 struct plt_entry
*ent
;
6329 bfd_boolean doneone
= FALSE
;
6330 bfd_vma plt_offset
= 0, glink_offset
= 0;
6332 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6333 if (ent
->plt
.refcount
> 0)
6339 plt_offset
= s
->size
;
6342 ent
->plt
.offset
= plt_offset
;
6345 if (!doneone
|| bfd_link_pic (info
))
6347 glink_offset
= s
->size
;
6348 s
->size
+= GLINK_ENTRY_SIZE (htab
, NULL
);
6350 ent
->glink_offset
= glink_offset
;
6354 htab
->elf
.irelplt
->size
+= sizeof (Elf32_External_Rela
);
6359 ent
->plt
.offset
= (bfd_vma
) -1;
6363 /* Allocate space for global sym dynamic relocs. */
6364 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6366 if (htab
->tlsld_got
.refcount
> 0)
6368 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6369 if (bfd_link_pic (info
))
6370 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
6373 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6375 if (htab
->elf
.sgot
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6377 unsigned int g_o_t
= 32768;
6379 /* If we haven't allocated the header, do so now. When we get here,
6380 for old plt/got the got size will be 0 to 32764 (not allocated),
6381 or 32780 to 65536 (header allocated). For new plt/got, the
6382 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6383 if (htab
->elf
.sgot
->size
<= 32768)
6385 g_o_t
= htab
->elf
.sgot
->size
;
6386 if (htab
->plt_type
== PLT_OLD
)
6388 htab
->elf
.sgot
->size
+= htab
->got_header_size
;
6391 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6393 if (bfd_link_pic (info
))
6395 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6397 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6398 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6400 if (info
->emitrelocations
)
6402 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6404 if (sda
!= NULL
&& sda
->ref_regular
)
6405 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6406 sda
= htab
->sdata
[1].sym
;
6407 if (sda
!= NULL
&& sda
->ref_regular
)
6408 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6411 if (htab
->glink
!= NULL
6412 && htab
->glink
->size
!= 0
6413 && htab
->elf
.dynamic_sections_created
)
6415 htab
->glink_pltresolve
= htab
->glink
->size
;
6416 /* Space for the branch table. */
6418 += htab
->elf
.srelplt
->size
/ (sizeof (Elf32_External_Rela
) / 4) - 4;
6419 /* Pad out to align the start of PLTresolve. */
6420 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6422 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6424 if (htab
->params
->emit_stub_syms
)
6426 struct elf_link_hash_entry
*sh
;
6427 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6428 TRUE
, FALSE
, FALSE
);
6431 if (sh
->root
.type
== bfd_link_hash_new
)
6433 sh
->root
.type
= bfd_link_hash_defined
;
6434 sh
->root
.u
.def
.section
= htab
->glink
;
6435 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6436 sh
->ref_regular
= 1;
6437 sh
->def_regular
= 1;
6438 sh
->ref_regular_nonweak
= 1;
6439 sh
->forced_local
= 1;
6441 sh
->root
.linker_def
= 1;
6443 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6444 TRUE
, FALSE
, FALSE
);
6447 if (sh
->root
.type
== bfd_link_hash_new
)
6449 sh
->root
.type
= bfd_link_hash_defined
;
6450 sh
->root
.u
.def
.section
= htab
->glink
;
6451 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6452 sh
->ref_regular
= 1;
6453 sh
->def_regular
= 1;
6454 sh
->ref_regular_nonweak
= 1;
6455 sh
->forced_local
= 1;
6457 sh
->root
.linker_def
= 1;
6462 if (htab
->glink
!= NULL
6463 && htab
->glink
->size
!= 0
6464 && htab
->glink_eh_frame
!= NULL
6465 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6466 && _bfd_elf_eh_frame_present (info
))
6468 s
= htab
->glink_eh_frame
;
6469 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6470 if (bfd_link_pic (info
))
6473 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6478 /* We've now determined the sizes of the various dynamic sections.
6479 Allocate memory for them. */
6481 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6483 bfd_boolean strip_section
= TRUE
;
6485 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6488 if (s
== htab
->elf
.splt
6489 || s
== htab
->elf
.sgot
)
6491 /* We'd like to strip these sections if they aren't needed, but if
6492 we've exported dynamic symbols from them we must leave them.
6493 It's too late to tell BFD to get rid of the symbols. */
6494 if (htab
->elf
.hplt
!= NULL
)
6495 strip_section
= FALSE
;
6496 /* Strip this section if we don't need it; see the
6499 else if (s
== htab
->elf
.iplt
6501 || s
== htab
->glink_eh_frame
6502 || s
== htab
->elf
.sgotplt
6504 || s
== htab
->elf
.sdynbss
6505 || s
== htab
->elf
.sdynrelro
6506 || s
== htab
->dynsbss
)
6508 /* Strip these too. */
6510 else if (s
== htab
->sdata
[0].section
6511 || s
== htab
->sdata
[1].section
)
6513 strip_section
= (s
->flags
& SEC_KEEP
) == 0;
6515 else if (CONST_STRNEQ (bfd_get_section_name (htab
->elf
.dynobj
, s
),
6520 /* Remember whether there are any relocation sections. */
6523 /* We use the reloc_count field as a counter if we need
6524 to copy relocs into the output file. */
6530 /* It's not one of our sections, so don't allocate space. */
6534 if (s
->size
== 0 && strip_section
)
6536 /* If we don't need this section, strip it from the
6537 output file. This is mostly to handle .rela.bss and
6538 .rela.plt. We must create both sections in
6539 create_dynamic_sections, because they must be created
6540 before the linker maps input sections to output
6541 sections. The linker does that before
6542 adjust_dynamic_symbol is called, and it is that
6543 function which decides whether anything needs to go
6544 into these sections. */
6545 s
->flags
|= SEC_EXCLUDE
;
6549 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
6552 /* Allocate memory for the section contents. */
6553 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
6554 if (s
->contents
== NULL
)
6558 if (htab
->elf
.dynamic_sections_created
)
6560 /* Add some entries to the .dynamic section. We fill in the
6561 values later, in ppc_elf_finish_dynamic_sections, but we
6562 must add the entries now so that we get the correct size for
6563 the .dynamic section. The DT_DEBUG entry is filled in by the
6564 dynamic linker and used by the debugger. */
6565 #define add_dynamic_entry(TAG, VAL) \
6566 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6568 if (bfd_link_executable (info
))
6570 if (!add_dynamic_entry (DT_DEBUG
, 0))
6574 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
6576 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6577 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6578 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6579 || !add_dynamic_entry (DT_JMPREL
, 0))
6583 if (htab
->plt_type
== PLT_NEW
6584 && htab
->glink
!= NULL
6585 && htab
->glink
->size
!= 0)
6587 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
6589 if (!htab
->params
->no_tls_get_addr_opt
6590 && htab
->tls_get_addr
!= NULL
6591 && htab
->tls_get_addr
->plt
.plist
!= NULL
6592 && !add_dynamic_entry (DT_PPC_OPT
, PPC_OPT_TLS
))
6598 if (!add_dynamic_entry (DT_RELA
, 0)
6599 || !add_dynamic_entry (DT_RELASZ
, 0)
6600 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
6604 /* If any dynamic relocs apply to a read-only section, then we
6605 need a DT_TEXTREL entry. */
6606 if ((info
->flags
& DF_TEXTREL
) == 0)
6607 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
6610 if ((info
->flags
& DF_TEXTREL
) != 0)
6612 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6615 if (htab
->is_vxworks
6616 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
6619 #undef add_dynamic_entry
6621 if (htab
->glink_eh_frame
!= NULL
6622 && htab
->glink_eh_frame
->contents
!= NULL
)
6624 unsigned char *p
= htab
->glink_eh_frame
->contents
;
6627 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
6628 /* CIE length (rewrite in case little-endian). */
6629 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
6630 p
+= sizeof (glink_eh_frame_cie
);
6632 val
= htab
->glink_eh_frame
->size
- 4 - sizeof (glink_eh_frame_cie
);
6633 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6636 val
= p
- htab
->glink_eh_frame
->contents
;
6637 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6639 /* Offset to .glink. Set later. */
6642 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
, p
);
6647 if (bfd_link_pic (info
)
6648 && htab
->elf
.dynamic_sections_created
)
6650 bfd_vma adv
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8) >> 2;
6652 *p
++ = DW_CFA_advance_loc
+ adv
;
6655 *p
++ = DW_CFA_advance_loc1
;
6658 else if (adv
< 65536)
6660 *p
++ = DW_CFA_advance_loc2
;
6661 bfd_put_16 (htab
->elf
.dynobj
, adv
, p
);
6666 *p
++ = DW_CFA_advance_loc4
;
6667 bfd_put_32 (htab
->elf
.dynobj
, adv
, p
);
6670 *p
++ = DW_CFA_register
;
6673 *p
++ = DW_CFA_advance_loc
+ 4;
6674 *p
++ = DW_CFA_restore_extended
;
6677 BFD_ASSERT ((bfd_vma
) ((p
+ 3 - htab
->glink_eh_frame
->contents
) & -4)
6678 == htab
->glink_eh_frame
->size
);
6684 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6685 if it looks like nothing is using them. */
6688 maybe_strip_sdasym (bfd
*output_bfd
, elf_linker_section_t
*lsect
)
6690 struct elf_link_hash_entry
*sda
= lsect
->sym
;
6692 if (sda
!= NULL
&& !sda
->ref_regular
&& sda
->dynindx
== -1)
6696 s
= bfd_get_section_by_name (output_bfd
, lsect
->name
);
6697 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6699 s
= bfd_get_section_by_name (output_bfd
, lsect
->bss_name
);
6700 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6702 sda
->def_regular
= 0;
6703 /* This is somewhat magic. See elf_link_output_extsym. */
6704 sda
->ref_dynamic
= 1;
6705 sda
->forced_local
= 0;
6712 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info
*info
)
6714 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6718 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[0]);
6719 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[1]);
6724 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6727 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6729 if (h
->plt
.plist
!= NULL
6731 && (!h
->pointer_equality_needed
6732 || !h
->ref_regular_nonweak
))
6735 return _bfd_elf_hash_symbol (h
);
6738 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6740 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6741 used for some functions that are allowed to break the ABI). */
6742 static const int shared_stub_entry
[] =
6744 0x7c0802a6, /* mflr 0 */
6745 0x429f0005, /* bcl 20, 31, .Lxxx */
6746 0x7d8802a6, /* mflr 12 */
6747 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6748 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6749 0x7c0803a6, /* mtlr 0 */
6750 0x7d8903a6, /* mtctr 12 */
6751 0x4e800420, /* bctr */
6754 static const int stub_entry
[] =
6756 0x3d800000, /* lis 12,xxx@ha */
6757 0x398c0000, /* addi 12,12,xxx@l */
6758 0x7d8903a6, /* mtctr 12 */
6759 0x4e800420, /* bctr */
6762 struct ppc_elf_relax_info
6764 unsigned int workaround_size
;
6765 unsigned int picfixup_size
;
6768 /* This function implements long branch trampolines, and the ppc476
6769 icache bug workaround. Any section needing trampolines or patch
6770 space for the workaround has its size extended so that we can
6771 add trampolines at the end of the section. */
6774 ppc_elf_relax_section (bfd
*abfd
,
6776 struct bfd_link_info
*link_info
,
6779 struct one_branch_fixup
6781 struct one_branch_fixup
*next
;
6783 /* Final link, can use the symbol offset. For a
6784 relocatable link we use the symbol's index. */
6789 Elf_Internal_Shdr
*symtab_hdr
;
6790 bfd_byte
*contents
= NULL
;
6791 Elf_Internal_Sym
*isymbuf
= NULL
;
6792 Elf_Internal_Rela
*internal_relocs
= NULL
;
6793 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6794 struct one_branch_fixup
*branch_fixups
= NULL
;
6795 struct ppc_elf_relax_info
*relax_info
= NULL
;
6796 unsigned changes
= 0;
6797 bfd_boolean workaround_change
;
6798 struct ppc_elf_link_hash_table
*htab
;
6799 bfd_size_type trampbase
, trampoff
, newsize
, picfixup_size
;
6801 bfd_boolean maybe_pasted
;
6805 /* No need to do anything with non-alloc or non-code sections. */
6806 if ((isec
->flags
& SEC_ALLOC
) == 0
6807 || (isec
->flags
& SEC_CODE
) == 0
6808 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6812 /* We cannot represent the required PIC relocs in the output, so don't
6813 do anything. The linker doesn't support mixing -shared and -r
6815 if (bfd_link_relocatable (link_info
) && bfd_link_pic (link_info
))
6818 htab
= ppc_elf_hash_table (link_info
);
6822 isec
->size
= (isec
->size
+ 3) & -4;
6823 if (isec
->rawsize
== 0)
6824 isec
->rawsize
= isec
->size
;
6825 trampbase
= isec
->size
;
6827 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6828 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6829 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6831 if (htab
->params
->ppc476_workaround
6832 || htab
->params
->pic_fixup
> 0)
6834 if (elf_section_data (isec
)->sec_info
== NULL
)
6836 elf_section_data (isec
)->sec_info
6837 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
6838 if (elf_section_data (isec
)->sec_info
== NULL
)
6841 relax_info
= elf_section_data (isec
)->sec_info
;
6842 trampbase
-= relax_info
->workaround_size
;
6845 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6846 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6847 /* Space for a branch around any trampolines. */
6848 trampoff
= trampbase
;
6849 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
6852 symtab_hdr
= &elf_symtab_hdr (abfd
);
6854 if (htab
->params
->branch_trampolines
6855 || htab
->params
->pic_fixup
> 0)
6857 /* Get a copy of the native relocations. */
6858 if (isec
->reloc_count
!= 0)
6860 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6861 link_info
->keep_memory
);
6862 if (internal_relocs
== NULL
)
6866 got2
= bfd_get_section_by_name (abfd
, ".got2");
6868 irelend
= internal_relocs
+ isec
->reloc_count
;
6869 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6871 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6874 struct one_branch_fixup
*f
;
6875 size_t insn_offset
= 0;
6876 bfd_vma max_branch_offset
= 0, val
;
6879 struct elf_link_hash_entry
*h
;
6880 struct plt_entry
**plist
;
6881 unsigned char sym_type
;
6886 case R_PPC_LOCAL24PC
:
6887 case R_PPC_PLTREL24
:
6888 max_branch_offset
= 1 << 25;
6892 case R_PPC_REL14_BRTAKEN
:
6893 case R_PPC_REL14_BRNTAKEN
:
6894 max_branch_offset
= 1 << 15;
6897 case R_PPC_ADDR16_HA
:
6898 if (htab
->params
->pic_fixup
> 0)
6906 /* Get the value of the symbol referred to by the reloc. */
6908 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6910 /* A local symbol. */
6911 Elf_Internal_Sym
*isym
;
6913 /* Read this BFD's local symbols. */
6914 if (isymbuf
== NULL
)
6916 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6917 if (isymbuf
== NULL
)
6918 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
6919 symtab_hdr
->sh_info
, 0,
6924 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6925 if (isym
->st_shndx
== SHN_UNDEF
)
6926 tsec
= bfd_und_section_ptr
;
6927 else if (isym
->st_shndx
== SHN_ABS
)
6928 tsec
= bfd_abs_section_ptr
;
6929 else if (isym
->st_shndx
== SHN_COMMON
)
6930 tsec
= bfd_com_section_ptr
;
6932 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6934 toff
= isym
->st_value
;
6935 sym_type
= ELF_ST_TYPE (isym
->st_info
);
6939 /* Global symbol handling. */
6942 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6943 h
= elf_sym_hashes (abfd
)[indx
];
6945 while (h
->root
.type
== bfd_link_hash_indirect
6946 || h
->root
.type
== bfd_link_hash_warning
)
6947 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6949 if (h
->root
.type
== bfd_link_hash_defined
6950 || h
->root
.type
== bfd_link_hash_defweak
)
6952 tsec
= h
->root
.u
.def
.section
;
6953 toff
= h
->root
.u
.def
.value
;
6955 else if (h
->root
.type
== bfd_link_hash_undefined
6956 || h
->root
.type
== bfd_link_hash_undefweak
)
6958 tsec
= bfd_und_section_ptr
;
6959 toff
= bfd_link_relocatable (link_info
) ? indx
: 0;
6964 /* If this branch is to __tls_get_addr then we may later
6965 optimise away the call. We won't be needing a long-
6966 branch stub in that case. */
6967 if (bfd_link_executable (link_info
)
6968 && h
== htab
->tls_get_addr
6969 && irel
!= internal_relocs
)
6971 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
6972 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
6973 unsigned int tls_mask
= 0;
6975 /* The previous reloc should be one of R_PPC_TLSGD or
6976 R_PPC_TLSLD, or for older object files, a reloc
6977 on the __tls_get_addr arg setup insn. Get tls
6978 mask bits from the symbol on that reloc. */
6979 if (t_symndx
< symtab_hdr
->sh_info
)
6981 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6983 if (local_got_offsets
!= NULL
)
6985 struct plt_entry
**local_plt
= (struct plt_entry
**)
6986 (local_got_offsets
+ symtab_hdr
->sh_info
);
6987 char *lgot_masks
= (char *)
6988 (local_plt
+ symtab_hdr
->sh_info
);
6989 tls_mask
= lgot_masks
[t_symndx
];
6994 struct elf_link_hash_entry
*th
6995 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
6997 while (th
->root
.type
== bfd_link_hash_indirect
6998 || th
->root
.type
== bfd_link_hash_warning
)
6999 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
7002 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
7005 /* The mask bits tell us if the call will be
7007 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
7008 && (t_rtype
== R_PPC_TLSGD
7009 || t_rtype
== R_PPC_GOT_TLSGD16
7010 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
7012 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
7013 && (t_rtype
== R_PPC_TLSLD
7014 || t_rtype
== R_PPC_GOT_TLSLD16
7015 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
7022 if (r_type
== R_PPC_ADDR16_HA
)
7027 && ppc_elf_hash_entry (h
)->has_addr16_ha
7028 && ppc_elf_hash_entry (h
)->has_addr16_lo
)
7029 picfixup_size
+= 12;
7033 /* The condition here under which we call find_plt_ent must
7034 match that in relocate_section. If we call find_plt_ent here
7035 but not in relocate_section, or vice versa, then the branch
7036 destination used here may be incorrect. */
7040 /* We know is_branch_reloc (r_type) is true. */
7041 if (h
->type
== STT_GNU_IFUNC
7042 || r_type
== R_PPC_PLTREL24
)
7043 plist
= &h
->plt
.plist
;
7045 else if (sym_type
== STT_GNU_IFUNC
7046 && elf_local_got_offsets (abfd
) != NULL
)
7048 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7049 struct plt_entry
**local_plt
= (struct plt_entry
**)
7050 (local_got_offsets
+ symtab_hdr
->sh_info
);
7051 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
7056 struct plt_entry
*ent
;
7058 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (link_info
))
7059 addend
= irel
->r_addend
;
7060 ent
= find_plt_ent (plist
, got2
, addend
);
7063 if (htab
->plt_type
== PLT_NEW
7065 || !htab
->elf
.dynamic_sections_created
7066 || h
->dynindx
== -1)
7069 toff
= ent
->glink_offset
;
7073 tsec
= htab
->elf
.splt
;
7074 toff
= ent
->plt
.offset
;
7079 /* If the branch and target are in the same section, you have
7080 no hope of adding stubs. We'll error out later should the
7085 /* There probably isn't any reason to handle symbols in
7086 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7087 attribute for a code section, and we are only looking at
7088 branches. However, implement it correctly here as a
7089 reference for other target relax_section functions. */
7090 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
7092 /* At this stage in linking, no SEC_MERGE symbol has been
7093 adjusted, so all references to such symbols need to be
7094 passed through _bfd_merged_section_offset. (Later, in
7095 relocate_section, all SEC_MERGE symbols *except* for
7096 section symbols have been adjusted.)
7098 gas may reduce relocations against symbols in SEC_MERGE
7099 sections to a relocation against the section symbol when
7100 the original addend was zero. When the reloc is against
7101 a section symbol we should include the addend in the
7102 offset passed to _bfd_merged_section_offset, since the
7103 location of interest is the original symbol. On the
7104 other hand, an access to "sym+addend" where "sym" is not
7105 a section symbol should not include the addend; Such an
7106 access is presumed to be an offset from "sym"; The
7107 location of interest is just "sym". */
7108 if (sym_type
== STT_SECTION
)
7109 toff
+= irel
->r_addend
;
7112 = _bfd_merged_section_offset (abfd
, &tsec
,
7113 elf_section_data (tsec
)->sec_info
,
7116 if (sym_type
!= STT_SECTION
)
7117 toff
+= irel
->r_addend
;
7119 /* PLTREL24 addends are special. */
7120 else if (r_type
!= R_PPC_PLTREL24
)
7121 toff
+= irel
->r_addend
;
7123 /* Attempted -shared link of non-pic code loses. */
7124 if ((!bfd_link_relocatable (link_info
)
7125 && tsec
== bfd_und_section_ptr
)
7126 || tsec
->output_section
== NULL
7127 || (tsec
->owner
!= NULL
7128 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
7131 roff
= irel
->r_offset
;
7133 /* If the branch is in range, no need to do anything. */
7134 if (tsec
!= bfd_und_section_ptr
7135 && (!bfd_link_relocatable (link_info
)
7136 /* A relocatable link may have sections moved during
7137 final link, so do not presume they remain in range. */
7138 || tsec
->output_section
== isec
->output_section
))
7140 bfd_vma symaddr
, reladdr
;
7142 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7143 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7144 if (symaddr
- reladdr
+ max_branch_offset
7145 < 2 * max_branch_offset
)
7149 /* Look for an existing fixup to this address. */
7150 for (f
= branch_fixups
; f
; f
= f
->next
)
7151 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7157 unsigned long stub_rtype
;
7159 val
= trampoff
- roff
;
7160 if (val
>= max_branch_offset
)
7161 /* Oh dear, we can't reach a trampoline. Don't try to add
7162 one. We'll report an error later. */
7165 if (bfd_link_pic (link_info
))
7167 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7172 size
= 4 * ARRAY_SIZE (stub_entry
);
7175 stub_rtype
= R_PPC_RELAX
;
7176 if (tsec
== htab
->elf
.splt
7177 || tsec
== htab
->glink
)
7179 stub_rtype
= R_PPC_RELAX_PLT
;
7180 if (r_type
== R_PPC_PLTREL24
)
7181 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7184 /* Hijack the old relocation. Since we need two
7185 relocations for this use a "composite" reloc. */
7186 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7188 irel
->r_offset
= trampoff
+ insn_offset
;
7189 if (r_type
== R_PPC_PLTREL24
7190 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7193 /* Record the fixup so we don't do it again this section. */
7194 f
= bfd_malloc (sizeof (*f
));
7195 f
->next
= branch_fixups
;
7198 f
->trampoff
= trampoff
;
7206 val
= f
->trampoff
- roff
;
7207 if (val
>= max_branch_offset
)
7210 /* Nop out the reloc, since we're finalizing things here. */
7211 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7214 /* Get the section contents. */
7215 if (contents
== NULL
)
7217 /* Get cached copy if it exists. */
7218 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7219 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7220 /* Go get them off disk. */
7221 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7225 /* Fix up the existing branch to hit the trampoline. */
7226 hit_addr
= contents
+ roff
;
7230 case R_PPC_LOCAL24PC
:
7231 case R_PPC_PLTREL24
:
7232 t0
= bfd_get_32 (abfd
, hit_addr
);
7234 t0
|= val
& 0x3fffffc;
7235 bfd_put_32 (abfd
, t0
, hit_addr
);
7239 case R_PPC_REL14_BRTAKEN
:
7240 case R_PPC_REL14_BRNTAKEN
:
7241 t0
= bfd_get_32 (abfd
, hit_addr
);
7244 bfd_put_32 (abfd
, t0
, hit_addr
);
7249 while (branch_fixups
!= NULL
)
7251 struct one_branch_fixup
*f
= branch_fixups
;
7252 branch_fixups
= branch_fixups
->next
;
7257 workaround_change
= FALSE
;
7259 if (htab
->params
->ppc476_workaround
7260 && (!bfd_link_relocatable (link_info
)
7261 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7263 bfd_vma addr
, end_addr
;
7264 unsigned int crossings
;
7265 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7267 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7268 end_addr
= addr
+ trampoff
;
7270 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7273 /* Keep space aligned, to ensure the patch code itself does
7274 not cross a page. Don't decrease size calculated on a
7275 previous pass as otherwise we might never settle on a layout. */
7276 newsize
= 15 - ((end_addr
- 1) & 15);
7277 newsize
+= crossings
* 16;
7278 if (relax_info
->workaround_size
< newsize
)
7280 relax_info
->workaround_size
= newsize
;
7281 workaround_change
= TRUE
;
7283 /* Ensure relocate_section is called. */
7284 isec
->flags
|= SEC_RELOC
;
7286 newsize
= trampoff
+ relax_info
->workaround_size
;
7289 if (htab
->params
->pic_fixup
> 0)
7291 picfixup_size
-= relax_info
->picfixup_size
;
7292 if (picfixup_size
!= 0)
7293 relax_info
->picfixup_size
+= picfixup_size
;
7294 newsize
+= relax_info
->picfixup_size
;
7297 if (changes
!= 0 || picfixup_size
!= 0 || workaround_change
)
7298 isec
->size
= newsize
;
7301 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7303 if (! link_info
->keep_memory
)
7307 /* Cache the symbols for elf_link_input_bfd. */
7308 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7312 if (contents
!= NULL
7313 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7315 if (!changes
&& !link_info
->keep_memory
)
7319 /* Cache the section contents for elf_link_input_bfd. */
7320 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7324 changes
+= picfixup_size
;
7327 /* Append sufficient NOP relocs so we can write out relocation
7328 information for the trampolines. */
7329 Elf_Internal_Shdr
*rel_hdr
;
7330 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7331 * sizeof (*new_relocs
));
7336 memcpy (new_relocs
, internal_relocs
,
7337 isec
->reloc_count
* sizeof (*new_relocs
));
7338 for (ix
= changes
; ix
--;)
7340 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7342 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7344 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7345 free (internal_relocs
);
7346 elf_section_data (isec
)->relocs
= new_relocs
;
7347 isec
->reloc_count
+= changes
;
7348 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7349 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7351 else if (internal_relocs
!= NULL
7352 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7353 free (internal_relocs
);
7355 *again
= changes
!= 0 || workaround_change
;
7359 while (branch_fixups
!= NULL
)
7361 struct one_branch_fixup
*f
= branch_fixups
;
7362 branch_fixups
= branch_fixups
->next
;
7365 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7367 if (contents
!= NULL
7368 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7370 if (internal_relocs
!= NULL
7371 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7372 free (internal_relocs
);
7376 /* What to do when ld finds relocations against symbols defined in
7377 discarded sections. */
7380 ppc_elf_action_discarded (asection
*sec
)
7382 if (strcmp (".fixup", sec
->name
) == 0)
7385 if (strcmp (".got2", sec
->name
) == 0)
7388 return _bfd_elf_default_action_discarded (sec
);
7391 /* Fill in the address for a pointer generated in a linker section. */
7394 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7395 elf_linker_section_t
*lsect
,
7396 struct elf_link_hash_entry
*h
,
7398 const Elf_Internal_Rela
*rel
)
7400 elf_linker_section_pointers_t
*linker_section_ptr
;
7402 BFD_ASSERT (lsect
!= NULL
);
7406 /* Handle global symbol. */
7407 struct ppc_elf_link_hash_entry
*eh
;
7409 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7410 BFD_ASSERT (eh
->elf
.def_regular
);
7411 linker_section_ptr
= eh
->linker_section_pointer
;
7415 /* Handle local symbol. */
7416 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7418 BFD_ASSERT (is_ppc_elf (input_bfd
));
7419 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7420 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7423 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7426 BFD_ASSERT (linker_section_ptr
!= NULL
);
7428 /* Offset will always be a multiple of four, so use the bottom bit
7429 as a "written" flag. */
7430 if ((linker_section_ptr
->offset
& 1) == 0)
7432 bfd_put_32 (lsect
->section
->owner
,
7433 relocation
+ linker_section_ptr
->addend
,
7434 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7435 linker_section_ptr
->offset
+= 1;
7438 relocation
= (lsect
->section
->output_section
->vma
7439 + lsect
->section
->output_offset
7440 + linker_section_ptr
->offset
- 1
7441 - SYM_VAL (lsect
->sym
));
7445 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7446 lsect
->name
, (long) relocation
, (long) relocation
);
7452 #define PPC_LO(v) ((v) & 0xffff)
7453 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7454 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7457 write_glink_stub (struct elf_link_hash_entry
*h
, struct plt_entry
*ent
,
7458 asection
*plt_sec
, unsigned char *p
,
7459 struct bfd_link_info
*info
)
7461 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7462 bfd
*output_bfd
= info
->output_bfd
;
7464 unsigned char *end
= p
+ GLINK_ENTRY_SIZE (htab
, h
);
7467 && h
== htab
->tls_get_addr
7468 && !htab
->params
->no_tls_get_addr_opt
)
7470 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
7472 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
7474 bfd_put_32 (output_bfd
, MR_0_3
, p
);
7476 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
7478 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
7480 bfd_put_32 (output_bfd
, BEQLR
, p
);
7482 bfd_put_32 (output_bfd
, MR_3_0
, p
);
7484 bfd_put_32 (output_bfd
, NOP
, p
);
7488 plt
= ((ent
->plt
.offset
& ~1)
7489 + plt_sec
->output_section
->vma
7490 + plt_sec
->output_offset
);
7492 if (bfd_link_pic (info
))
7496 if (ent
->addend
>= 32768)
7498 + ent
->sec
->output_section
->vma
7499 + ent
->sec
->output_offset
);
7500 else if (htab
->elf
.hgot
!= NULL
)
7501 got
= SYM_VAL (htab
->elf
.hgot
);
7505 if (plt
+ 0x8000 < 0x10000)
7506 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7509 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7511 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7516 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7518 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7521 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7523 bfd_put_32 (output_bfd
, BCTR
, p
);
7527 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7532 /* Return true if symbol is defined statically. */
7535 is_static_defined (struct elf_link_hash_entry
*h
)
7537 return ((h
->root
.type
== bfd_link_hash_defined
7538 || h
->root
.type
== bfd_link_hash_defweak
)
7539 && h
->root
.u
.def
.section
!= NULL
7540 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7543 /* If INSN is an opcode that may be used with an @tls operand, return
7544 the transformed insn for TLS optimisation, otherwise return 0. If
7545 REG is non-zero only match an insn with RB or RA equal to REG. */
7548 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7552 if ((insn
& (0x3f << 26)) != 31 << 26)
7555 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7556 rtra
= insn
& ((1 << 26) - (1 << 16));
7557 else if (((insn
>> 16) & 0x1f) == reg
)
7558 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7562 if ((insn
& (0x3ff << 1)) == 266 << 1)
7565 else if ((insn
& (0x1f << 1)) == 23 << 1
7566 && ((insn
& (0x1f << 6)) < 14 << 6
7567 || ((insn
& (0x1f << 6)) >= 16 << 6
7568 && (insn
& (0x1f << 6)) < 24 << 6)))
7569 /* load and store indexed -> dform. */
7570 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7571 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7572 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7573 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7574 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7576 insn
= (58 << 26) | 2;
7583 /* If INSN is an opcode that may be used with an @tprel operand, return
7584 the transformed insn for an undefined weak symbol, ie. with the
7585 thread pointer REG operand removed. Otherwise return 0. */
7588 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7590 if ((insn
& (0x1f << 16)) == reg
<< 16
7591 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7592 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7593 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7594 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7595 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7596 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7597 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7598 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7599 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7600 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7601 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7602 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7603 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7604 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7605 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7606 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7608 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7609 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7611 insn
&= ~(0x1f << 16);
7613 else if ((insn
& (0x1f << 21)) == reg
<< 21
7614 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7615 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7616 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7618 insn
&= ~(0x1f << 21);
7619 insn
|= (insn
& (0x1f << 16)) << 5;
7620 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7621 insn
-= 2 >> 26; /* convert to ori,oris */
7629 is_insn_ds_form (unsigned int insn
)
7631 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7632 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7633 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7634 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7638 is_insn_dq_form (unsigned int insn
)
7640 return ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
7641 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7642 && (insn
& 3) == 1));
7645 /* The RELOCATE_SECTION function is called by the ELF backend linker
7646 to handle the relocations for a section.
7648 The relocs are always passed as Rela structures; if the section
7649 actually uses Rel structures, the r_addend field will always be
7652 This function is responsible for adjust the section contents as
7653 necessary, and (if using Rela relocs and generating a
7654 relocatable output file) adjusting the reloc addend as
7657 This function does not have to worry about setting the reloc
7658 address or the reloc symbol index.
7660 LOCAL_SYMS is a pointer to the swapped in local symbols.
7662 LOCAL_SECTIONS is an array giving the section in the input file
7663 corresponding to the st_shndx field of each local symbol.
7665 The global hash table entry for the global symbols can be found
7666 via elf_sym_hashes (input_bfd).
7668 When generating relocatable output, this function must handle
7669 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7670 going to be the section symbol corresponding to the output
7671 section, which means that the addend must be adjusted
7675 ppc_elf_relocate_section (bfd
*output_bfd
,
7676 struct bfd_link_info
*info
,
7678 asection
*input_section
,
7680 Elf_Internal_Rela
*relocs
,
7681 Elf_Internal_Sym
*local_syms
,
7682 asection
**local_sections
)
7684 Elf_Internal_Shdr
*symtab_hdr
;
7685 struct elf_link_hash_entry
**sym_hashes
;
7686 struct ppc_elf_link_hash_table
*htab
;
7687 Elf_Internal_Rela
*rel
;
7688 Elf_Internal_Rela
*wrel
;
7689 Elf_Internal_Rela
*relend
;
7690 Elf_Internal_Rela outrel
;
7692 bfd_vma
*local_got_offsets
;
7693 bfd_boolean ret
= TRUE
;
7694 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
7695 bfd_boolean is_vxworks_tls
;
7696 unsigned int picfixup_size
= 0;
7697 struct ppc_elf_relax_info
*relax_info
= NULL
;
7700 _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
7701 "%ld relocations%s",
7702 input_bfd
, input_section
,
7703 (long) input_section
->reloc_count
,
7704 (bfd_link_relocatable (info
)) ? " (relocatable)" : "");
7707 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7709 /* Initialize howto table if not already done. */
7710 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7711 ppc_elf_howto_init ();
7713 htab
= ppc_elf_hash_table (info
);
7714 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7715 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7716 sym_hashes
= elf_sym_hashes (input_bfd
);
7717 /* We have to handle relocations in vxworks .tls_vars sections
7718 specially, because the dynamic loader is 'weird'. */
7719 is_vxworks_tls
= (htab
->is_vxworks
&& bfd_link_pic (info
)
7720 && !strcmp (input_section
->output_section
->name
,
7722 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
)
7723 relax_info
= elf_section_data (input_section
)->sec_info
;
7724 rel
= wrel
= relocs
;
7725 relend
= relocs
+ input_section
->reloc_count
;
7726 for (; rel
< relend
; wrel
++, rel
++)
7728 enum elf_ppc_reloc_type r_type
;
7730 bfd_reloc_status_type r
;
7731 Elf_Internal_Sym
*sym
;
7733 struct elf_link_hash_entry
*h
;
7734 const char *sym_name
;
7735 reloc_howto_type
*howto
;
7736 unsigned long r_symndx
;
7738 bfd_vma branch_bit
, from
;
7739 bfd_boolean unresolved_reloc
;
7741 unsigned int tls_type
, tls_mask
, tls_gd
;
7742 struct plt_entry
**ifunc
;
7743 struct reloc_howto_struct alt_howto
;
7746 r_type
= ELF32_R_TYPE (rel
->r_info
);
7750 unresolved_reloc
= FALSE
;
7752 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7754 if (r_symndx
< symtab_hdr
->sh_info
)
7756 sym
= local_syms
+ r_symndx
;
7757 sec
= local_sections
[r_symndx
];
7758 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7760 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7764 bfd_boolean ignored
;
7766 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7767 r_symndx
, symtab_hdr
, sym_hashes
,
7769 unresolved_reloc
, warned
, ignored
);
7771 sym_name
= h
->root
.root
.string
;
7774 if (sec
!= NULL
&& discarded_section (sec
))
7776 /* For relocs against symbols from removed linkonce sections,
7777 or sections discarded by a linker script, we just want the
7778 section contents zeroed. Avoid any special processing. */
7780 if (r_type
< R_PPC_max
)
7781 howto
= ppc_elf_howto_table
[r_type
];
7783 _bfd_clear_contents (howto
, input_bfd
, input_section
,
7784 contents
+ rel
->r_offset
);
7785 wrel
->r_offset
= rel
->r_offset
;
7789 /* For ld -r, remove relocations in debug sections against
7790 symbols defined in discarded sections. Not done for
7791 non-debug to preserve relocs in .eh_frame which the
7792 eh_frame editing code expects to be present. */
7793 if (bfd_link_relocatable (info
)
7794 && (input_section
->flags
& SEC_DEBUGGING
))
7800 if (bfd_link_relocatable (info
))
7803 && r_type
== R_PPC_PLTREL24
7804 && rel
->r_addend
!= 0)
7806 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7807 addend specifies the GOT pointer offset within .got2. */
7808 rel
->r_addend
+= got2
->output_offset
;
7810 if (r_type
!= R_PPC_RELAX_PLT
7811 && r_type
!= R_PPC_RELAX_PLTREL24
7812 && r_type
!= R_PPC_RELAX
)
7816 /* TLS optimizations. Replace instruction sequences and relocs
7817 based on information we collected in tls_optimize. We edit
7818 RELOCS so that --emit-relocs will output something sensible
7819 for the final instruction stream. */
7823 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7824 else if (local_got_offsets
!= NULL
)
7826 struct plt_entry
**local_plt
;
7829 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7830 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7831 tls_mask
= lgot_masks
[r_symndx
];
7834 /* Ensure reloc mapping code below stays sane. */
7835 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7836 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7837 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7838 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7839 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7840 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7841 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7842 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
7849 case R_PPC_GOT_TPREL16
:
7850 case R_PPC_GOT_TPREL16_LO
:
7851 if ((tls_mask
& TLS_TLS
) != 0
7852 && (tls_mask
& TLS_TPREL
) == 0)
7856 insn
= bfd_get_32 (input_bfd
,
7857 contents
+ rel
->r_offset
- d_offset
);
7859 insn
|= 0x3c020000; /* addis 0,2,0 */
7860 bfd_put_32 (input_bfd
, insn
,
7861 contents
+ rel
->r_offset
- d_offset
);
7862 r_type
= R_PPC_TPREL16_HA
;
7863 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7868 if ((tls_mask
& TLS_TLS
) != 0
7869 && (tls_mask
& TLS_TPREL
) == 0)
7873 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7874 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
7877 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
7878 r_type
= R_PPC_TPREL16_LO
;
7879 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7881 /* Was PPC_TLS which sits on insn boundary, now
7882 PPC_TPREL16_LO which is at low-order half-word. */
7883 rel
->r_offset
+= d_offset
;
7887 case R_PPC_GOT_TLSGD16_HI
:
7888 case R_PPC_GOT_TLSGD16_HA
:
7889 tls_gd
= TLS_TPRELGD
;
7890 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7894 case R_PPC_GOT_TLSLD16_HI
:
7895 case R_PPC_GOT_TLSLD16_HA
:
7896 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7899 if ((tls_mask
& tls_gd
) != 0)
7900 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7901 + R_PPC_GOT_TPREL16
);
7904 rel
->r_offset
-= d_offset
;
7905 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
7906 r_type
= R_PPC_NONE
;
7908 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7912 case R_PPC_GOT_TLSGD16
:
7913 case R_PPC_GOT_TLSGD16_LO
:
7914 tls_gd
= TLS_TPRELGD
;
7915 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7919 case R_PPC_GOT_TLSLD16
:
7920 case R_PPC_GOT_TLSLD16_LO
:
7921 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7923 unsigned int insn1
, insn2
;
7927 offset
= (bfd_vma
) -1;
7928 /* If not using the newer R_PPC_TLSGD/LD to mark
7929 __tls_get_addr calls, we must trust that the call
7930 stays with its arg setup insns, ie. that the next
7931 reloc is the __tls_get_addr call associated with
7932 the current reloc. Edit both insns. */
7933 if (input_section
->has_tls_get_addr_call
7935 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
7936 htab
->tls_get_addr
))
7937 offset
= rel
[1].r_offset
;
7938 /* We read the low GOT_TLS insn because we need to keep
7939 the destination reg. It may be something other than
7940 the usual r3, and moved to r3 before the call by
7941 intervening code. */
7942 insn1
= bfd_get_32 (input_bfd
,
7943 contents
+ rel
->r_offset
- d_offset
);
7944 if ((tls_mask
& tls_gd
) != 0)
7947 insn1
&= (0x1f << 21) | (0x1f << 16);
7948 insn1
|= 32 << 26; /* lwz */
7949 if (offset
!= (bfd_vma
) -1)
7951 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7952 insn2
= 0x7c631214; /* add 3,3,2 */
7953 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
7955 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7956 + R_PPC_GOT_TPREL16
);
7957 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7962 insn1
&= 0x1f << 21;
7963 insn1
|= 0x3c020000; /* addis r,2,0 */
7966 /* Was an LD reloc. */
7968 r_symndx
< symtab_hdr
->sh_info
;
7970 if (local_sections
[r_symndx
] == sec
)
7972 if (r_symndx
>= symtab_hdr
->sh_info
)
7973 r_symndx
= STN_UNDEF
;
7974 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7975 if (r_symndx
!= STN_UNDEF
)
7976 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7977 + sec
->output_offset
7978 + sec
->output_section
->vma
);
7980 r_type
= R_PPC_TPREL16_HA
;
7981 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7982 if (offset
!= (bfd_vma
) -1)
7984 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7985 rel
[1].r_offset
= offset
+ d_offset
;
7986 rel
[1].r_addend
= rel
->r_addend
;
7987 insn2
= 0x38630000; /* addi 3,3,0 */
7988 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
7991 bfd_put_32 (input_bfd
, insn1
,
7992 contents
+ rel
->r_offset
- d_offset
);
7995 /* We changed the symbol on an LD reloc. Start over
7996 in order to get h, sym, sec etc. right. */
8003 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
8006 bfd_vma offset
= rel
->r_offset
;
8008 if ((tls_mask
& TLS_TPRELGD
) != 0)
8011 r_type
= R_PPC_NONE
;
8012 insn2
= 0x7c631214; /* add 3,3,2 */
8017 r_type
= R_PPC_TPREL16_LO
;
8018 rel
->r_offset
+= d_offset
;
8019 insn2
= 0x38630000; /* addi 3,3,0 */
8021 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8022 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
8023 /* Zap the reloc on the _tls_get_addr call too. */
8024 BFD_ASSERT (offset
== rel
[1].r_offset
);
8025 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8030 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
8035 r_symndx
< symtab_hdr
->sh_info
;
8037 if (local_sections
[r_symndx
] == sec
)
8039 if (r_symndx
>= symtab_hdr
->sh_info
)
8040 r_symndx
= STN_UNDEF
;
8041 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8042 if (r_symndx
!= STN_UNDEF
)
8043 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8044 + sec
->output_offset
8045 + sec
->output_section
->vma
);
8047 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8048 rel
->r_offset
+= d_offset
;
8049 insn2
= 0x38630000; /* addi 3,3,0 */
8050 bfd_put_32 (input_bfd
, insn2
,
8051 contents
+ rel
->r_offset
- d_offset
);
8052 /* Zap the reloc on the _tls_get_addr call too. */
8053 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
8054 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8060 /* Handle other relocations that tweak non-addend part of insn. */
8067 /* Branch taken prediction relocations. */
8068 case R_PPC_ADDR14_BRTAKEN
:
8069 case R_PPC_REL14_BRTAKEN
:
8070 branch_bit
= BRANCH_PREDICT_BIT
;
8073 /* Branch not taken prediction relocations. */
8074 case R_PPC_ADDR14_BRNTAKEN
:
8075 case R_PPC_REL14_BRNTAKEN
:
8079 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
8080 insn
&= ~BRANCH_PREDICT_BIT
;
8083 from
= (rel
->r_offset
8084 + input_section
->output_offset
8085 + input_section
->output_section
->vma
);
8087 /* Invert 'y' bit if not the default. */
8088 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
8089 insn
^= BRANCH_PREDICT_BIT
;
8091 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
8096 if (ELIMINATE_COPY_RELOCS
8100 && ppc_elf_hash_entry (h
)->has_addr16_ha
8101 && ppc_elf_hash_entry (h
)->has_addr16_lo
8102 && htab
->params
->pic_fixup
> 0)
8104 /* Convert lis;addi or lis;load/store accessing a protected
8105 variable defined in a shared library to PIC. */
8108 if (r_type
== R_PPC_ADDR16_HA
)
8110 insn
= bfd_get_32 (input_bfd
,
8111 contents
+ rel
->r_offset
- d_offset
);
8112 if ((insn
& (0x3f << 26)) == (15u << 26)
8113 && (insn
& (0x1f << 16)) == 0 /* lis */)
8119 p
= (contents
+ input_section
->size
8120 - relax_info
->workaround_size
8121 - relax_info
->picfixup_size
8123 off
= (p
- contents
) - (rel
->r_offset
- d_offset
);
8124 if (off
> 0x1fffffc || (off
& 3) != 0)
8125 info
->callbacks
->einfo
8126 (_("%H: fixup branch overflow\n"),
8127 input_bfd
, input_section
, rel
->r_offset
);
8129 bfd_put_32 (input_bfd
, B
| off
,
8130 contents
+ rel
->r_offset
- d_offset
);
8131 got_addr
= (htab
->elf
.sgot
->output_section
->vma
8132 + htab
->elf
.sgot
->output_offset
8133 + (h
->got
.offset
& ~1));
8134 wrel
->r_offset
= (p
- contents
) + d_offset
;
8135 wrel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_HA
);
8136 wrel
->r_addend
= got_addr
;
8138 insn
|= ((unsigned int) (got_addr
+ 0x8000) >> 16) & 0xffff;
8139 bfd_put_32 (input_bfd
, insn
, p
);
8141 /* Convert lis to lwz, loading address from GOT. */
8143 insn
^= (32u ^ 15u) << 26;
8144 insn
|= (insn
& (0x1f << 21)) >> 5;
8145 insn
|= got_addr
& 0xffff;
8146 bfd_put_32 (input_bfd
, insn
, p
+ 4);
8148 bfd_put_32 (input_bfd
, B
| ((-4 - off
) & 0x3ffffff), p
+ 8);
8149 picfixup_size
+= 12;
8151 /* Use one of the spare relocs, so --emit-relocs
8152 output is reasonable. */
8153 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8155 rel
->r_offset
= wrel
[-1].r_offset
+ 4;
8156 rel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_LO
);
8157 rel
->r_addend
= wrel
[-1].r_addend
;
8159 /* Continue on as if we had a got reloc, to output
8161 r_type
= R_PPC_GOT16_LO
;
8165 /* xgettext:c-format */
8166 (_("%pB(%pA+%#" PRIx64
"): error: "
8167 "%s with unexpected instruction %#x"),
8168 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
8169 "R_PPC_ADDR16_HA", insn
);
8171 else if (r_type
== R_PPC_ADDR16_LO
)
8173 insn
= bfd_get_32 (input_bfd
,
8174 contents
+ rel
->r_offset
- d_offset
);
8175 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8176 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8177 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8178 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8179 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8180 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8181 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8182 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8183 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8184 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8185 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8186 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8187 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8188 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8189 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8191 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8192 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
8194 /* Arrange to apply the reloc addend, if any. */
8196 unresolved_reloc
= FALSE
;
8197 rel
->r_info
= ELF32_R_INFO (0, r_type
);
8201 /* xgettext:c-format */
8202 (_("%pB(%pA+%#" PRIx64
"): error: "
8203 "%s with unexpected instruction %#x"),
8204 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
8205 "R_PPC_ADDR16_LO", insn
);
8210 if (!htab
->is_vxworks
)
8212 struct plt_entry
*ent
;
8216 if (h
->type
== STT_GNU_IFUNC
)
8217 ifunc
= &h
->plt
.plist
;
8219 else if (local_got_offsets
!= NULL
8220 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8222 struct plt_entry
**local_plt
;
8224 local_plt
= (struct plt_entry
**) (local_got_offsets
8225 + symtab_hdr
->sh_info
);
8226 ifunc
= local_plt
+ r_symndx
;
8231 && (!bfd_link_pic (info
)
8232 || is_branch_reloc (r_type
)))
8235 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
8236 addend
= rel
->r_addend
;
8237 ent
= find_plt_ent (ifunc
, got2
, addend
);
8241 if (bfd_link_pic (info
)
8243 && htab
->plt_type
!= PLT_NEW
8244 && (!htab
->elf
.dynamic_sections_created
8246 || h
->dynindx
== -1))
8248 /* Uh oh, we are going to create a pic glink stub
8249 for an ifunc (here for h == NULL and later in
8250 finish_dynamic_symbol for h != NULL), and
8251 apparently are using code compiled with
8252 -mbss-plt. The difficulty is that -mbss-plt code
8253 gives no indication via a magic PLTREL24 addend
8254 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8255 is pointing into a .got2 section (and how far
8257 info
->callbacks
->einfo
8258 /* xgettext:c-format */
8259 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8260 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
8262 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
8264 Elf_Internal_Rela rela
;
8267 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
8268 + htab
->elf
.iplt
->output_offset
8270 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8271 rela
.r_addend
= relocation
;
8272 loc
= htab
->elf
.irelplt
->contents
;
8273 loc
+= (htab
->elf
.irelplt
->reloc_count
++
8274 * sizeof (Elf32_External_Rela
));
8275 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8276 htab
->local_ifunc_resolver
= 1;
8278 ent
->plt
.offset
|= 1;
8280 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
8282 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
8283 + ent
->glink_offset
);
8285 write_glink_stub (NULL
, ent
, htab
->elf
.iplt
, p
, info
);
8286 ent
->glink_offset
|= 1;
8289 unresolved_reloc
= FALSE
;
8290 if (htab
->plt_type
== PLT_NEW
8291 || !htab
->elf
.dynamic_sections_created
8293 || h
->dynindx
== -1)
8294 relocation
= (htab
->glink
->output_section
->vma
8295 + htab
->glink
->output_offset
8296 + (ent
->glink_offset
& ~1));
8298 relocation
= (htab
->elf
.splt
->output_section
->vma
8299 + htab
->elf
.splt
->output_offset
8304 addend
= rel
->r_addend
;
8306 if (r_type
< R_PPC_max
)
8307 howto
= ppc_elf_howto_table
[r_type
];
8314 case R_PPC_TPREL16_HA
:
8315 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
8317 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
8318 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8319 if ((insn
& ((0x3f << 26) | 0x1f << 16))
8320 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8321 /* xgettext:c-format */
8322 info
->callbacks
->minfo
8323 (_("%H: warning: %s unexpected insn %#x.\n"),
8324 input_bfd
, input_section
, rel
->r_offset
, howto
->name
, insn
);
8326 bfd_put_32 (input_bfd
, NOP
, p
);
8330 case R_PPC_TPREL16_LO
:
8331 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
8333 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
8334 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8335 insn
&= ~(0x1f << 16);
8337 bfd_put_32 (input_bfd
, insn
, p
);
8346 /* xgettext:c-format */
8347 _bfd_error_handler (_("%pB: %s unsupported"),
8348 input_bfd
, howto
->name
);
8350 bfd_set_error (bfd_error_bad_value
);
8358 case R_PPC_EMB_MRKREF
:
8359 case R_PPC_GNU_VTINHERIT
:
8360 case R_PPC_GNU_VTENTRY
:
8363 /* GOT16 relocations. Like an ADDR16 using the symbol's
8364 address in the GOT as relocation value instead of the
8365 symbol's value itself. Also, create a GOT entry for the
8366 symbol and put the symbol value there. */
8367 case R_PPC_GOT_TLSGD16
:
8368 case R_PPC_GOT_TLSGD16_LO
:
8369 case R_PPC_GOT_TLSGD16_HI
:
8370 case R_PPC_GOT_TLSGD16_HA
:
8371 tls_type
= TLS_TLS
| TLS_GD
;
8374 case R_PPC_GOT_TLSLD16
:
8375 case R_PPC_GOT_TLSLD16_LO
:
8376 case R_PPC_GOT_TLSLD16_HI
:
8377 case R_PPC_GOT_TLSLD16_HA
:
8378 tls_type
= TLS_TLS
| TLS_LD
;
8381 case R_PPC_GOT_TPREL16
:
8382 case R_PPC_GOT_TPREL16_LO
:
8383 case R_PPC_GOT_TPREL16_HI
:
8384 case R_PPC_GOT_TPREL16_HA
:
8385 tls_type
= TLS_TLS
| TLS_TPREL
;
8388 case R_PPC_GOT_DTPREL16
:
8389 case R_PPC_GOT_DTPREL16_LO
:
8390 case R_PPC_GOT_DTPREL16_HI
:
8391 case R_PPC_GOT_DTPREL16_HA
:
8392 tls_type
= TLS_TLS
| TLS_DTPREL
;
8396 case R_PPC_GOT16_LO
:
8397 case R_PPC_GOT16_HI
:
8398 case R_PPC_GOT16_HA
:
8402 /* Relocation is to the entry for this symbol in the global
8408 if (htab
->elf
.sgot
== NULL
)
8412 if (tls_type
== (TLS_TLS
| TLS_LD
)
8414 || !h
->def_dynamic
))
8415 offp
= &htab
->tlsld_got
.offset
;
8418 if (!htab
->elf
.dynamic_sections_created
8420 || SYMBOL_REFERENCES_LOCAL (info
, h
)
8421 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8422 /* This is actually a static link, or it is a
8423 -Bsymbolic link and the symbol is defined
8424 locally, or the symbol was forced to be local
8425 because of a version file. */
8430 unresolved_reloc
= FALSE
;
8432 offp
= &h
->got
.offset
;
8436 if (local_got_offsets
== NULL
)
8438 offp
= &local_got_offsets
[r_symndx
];
8441 /* The offset must always be a multiple of 4. We use the
8442 least significant bit to record whether we have already
8443 processed this entry. */
8449 unsigned int tls_m
= (tls_mask
8450 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8451 | TLS_TPREL
| TLS_TPRELGD
));
8453 if (offp
== &htab
->tlsld_got
.offset
)
8459 /* We might have multiple got entries for this sym.
8460 Initialize them all. */
8465 if ((tls_m
& TLS_LD
) != 0)
8467 tls_ty
= TLS_TLS
| TLS_LD
;
8470 else if ((tls_m
& TLS_GD
) != 0)
8472 tls_ty
= TLS_TLS
| TLS_GD
;
8475 else if ((tls_m
& TLS_DTPREL
) != 0)
8477 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8478 tls_m
&= ~TLS_DTPREL
;
8480 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8482 tls_ty
= TLS_TLS
| TLS_TPREL
;
8486 /* Generate relocs for the dynamic linker. */
8488 || (bfd_link_pic (info
)
8490 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)
8491 || offp
== &htab
->tlsld_got
.offset
)
8492 && !(tls_ty
== (TLS_TLS
| TLS_TPREL
)
8493 && bfd_link_executable (info
)
8494 && SYMBOL_REFERENCES_LOCAL (info
, h
))))
8496 asection
*rsec
= htab
->elf
.srelgot
;
8501 rsec
= htab
->elf
.irelplt
;
8503 htab
->local_ifunc_resolver
= 1;
8504 else if (is_static_defined (h
))
8505 htab
->maybe_local_ifunc_resolver
= 1;
8507 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
8508 + htab
->elf
.sgot
->output_offset
8510 outrel
.r_addend
= 0;
8511 if (tls_ty
& (TLS_LD
| TLS_GD
))
8513 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8514 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8516 loc
= rsec
->contents
;
8517 loc
+= (rsec
->reloc_count
++
8518 * sizeof (Elf32_External_Rela
));
8519 bfd_elf32_swap_reloca_out (output_bfd
,
8521 outrel
.r_offset
+= 4;
8523 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8526 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8527 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8528 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8529 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8531 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8532 else if (ifunc
!= NULL
)
8533 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8535 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8536 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8538 outrel
.r_addend
+= relocation
;
8539 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8541 if (htab
->elf
.tls_sec
== NULL
)
8542 outrel
.r_addend
= 0;
8544 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8547 loc
= rsec
->contents
;
8548 loc
+= (rsec
->reloc_count
++
8549 * sizeof (Elf32_External_Rela
));
8550 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8553 /* Init the .got section contents if we're not
8554 emitting a reloc. */
8557 bfd_vma value
= relocation
;
8561 if (htab
->elf
.tls_sec
== NULL
)
8565 if (tls_ty
& TLS_LD
)
8568 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8569 if (tls_ty
& TLS_TPREL
)
8570 value
+= DTP_OFFSET
- TP_OFFSET
;
8573 if (tls_ty
& (TLS_LD
| TLS_GD
))
8575 bfd_put_32 (input_bfd
, value
,
8576 htab
->elf
.sgot
->contents
+ off
+ 4);
8580 bfd_put_32 (input_bfd
, value
,
8581 htab
->elf
.sgot
->contents
+ off
);
8585 if (tls_ty
& (TLS_LD
| TLS_GD
))
8594 if (off
>= (bfd_vma
) -2)
8597 if ((tls_type
& TLS_TLS
) != 0)
8599 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8601 if ((tls_mask
& TLS_LD
) != 0
8603 || !h
->def_dynamic
))
8605 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8607 if ((tls_mask
& TLS_GD
) != 0)
8609 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8611 if ((tls_mask
& TLS_DTPREL
) != 0)
8618 /* If here for a picfixup, we're done. */
8619 if (r_type
!= ELF32_R_TYPE (rel
->r_info
))
8622 relocation
= (htab
->elf
.sgot
->output_section
->vma
8623 + htab
->elf
.sgot
->output_offset
8625 - SYM_VAL (htab
->elf
.hgot
));
8627 /* Addends on got relocations don't make much sense.
8628 x+off@got is actually x@got+off, and since the got is
8629 generated by a hash table traversal, the value in the
8630 got at entry m+n bears little relation to the entry m. */
8632 info
->callbacks
->einfo
8633 /* xgettext:c-format */
8634 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8635 input_bfd
, input_section
, rel
->r_offset
,
8641 /* Relocations that need no special processing. */
8642 case R_PPC_LOCAL24PC
:
8643 /* It makes no sense to point a local relocation
8644 at a symbol not in this object. */
8645 if (unresolved_reloc
)
8647 (*info
->callbacks
->undefined_symbol
) (info
,
8648 h
->root
.root
.string
,
8655 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
&& bfd_link_pic (info
))
8657 /* @local on an ifunc does not really make sense since
8658 the ifunc resolver can take you anywhere. More
8659 seriously, calls to ifuncs must go through a plt call
8660 stub, and for pic the plt call stubs uses r30 to
8661 access the PLT. The problem is that a call that is
8662 local won't have the +32k reloc addend trick marking
8663 -fPIC code, so the linker won't know whether r30 is
8664 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8665 /* xgettext:c-format */
8666 info
->callbacks
->einfo (_("%X%H: @local call to ifunc %s\n"),
8667 input_bfd
, input_section
, rel
->r_offset
,
8668 h
->root
.root
.string
);
8672 case R_PPC_DTPREL16
:
8673 case R_PPC_DTPREL16_LO
:
8674 case R_PPC_DTPREL16_HI
:
8675 case R_PPC_DTPREL16_HA
:
8676 if (htab
->elf
.tls_sec
!= NULL
)
8677 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8680 /* Relocations that may need to be propagated if this is a shared
8683 case R_PPC_TPREL16_LO
:
8684 case R_PPC_TPREL16_HI
:
8685 case R_PPC_TPREL16_HA
:
8687 && h
->root
.type
== bfd_link_hash_undefweak
8688 && h
->dynindx
== -1)
8690 /* Make this relocation against an undefined weak symbol
8691 resolve to zero. This is really just a tweak, since
8692 code using weak externs ought to check that they are
8693 defined before using them. */
8694 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8695 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8696 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8698 bfd_put_32 (input_bfd
, insn
, p
);
8701 if (htab
->elf
.tls_sec
!= NULL
)
8702 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8703 /* The TPREL16 relocs shouldn't really be used in shared
8704 libs or with non-local symbols as that will result in
8705 DT_TEXTREL being set, but support them anyway. */
8709 if (htab
->elf
.tls_sec
!= NULL
)
8710 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8713 case R_PPC_DTPREL32
:
8714 if (htab
->elf
.tls_sec
!= NULL
)
8715 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8718 case R_PPC_DTPMOD32
:
8724 case R_PPC_REL16_LO
:
8725 case R_PPC_REL16_HI
:
8726 case R_PPC_REL16_HA
:
8727 case R_PPC_REL16DX_HA
:
8731 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8737 case R_PPC_ADDR16_LO
:
8738 case R_PPC_ADDR16_HI
:
8739 case R_PPC_ADDR16_HA
:
8744 case R_PPC_VLE_REL8
:
8745 case R_PPC_VLE_REL15
:
8746 case R_PPC_VLE_REL24
:
8749 case R_PPC_REL14_BRTAKEN
:
8750 case R_PPC_REL14_BRNTAKEN
:
8751 /* If these relocations are not to a named symbol, they can be
8752 handled right here, no need to bother the dynamic linker. */
8753 if (SYMBOL_CALLS_LOCAL (info
, h
)
8754 || h
== htab
->elf
.hgot
)
8760 case R_PPC_ADDR14_BRTAKEN
:
8761 case R_PPC_ADDR14_BRNTAKEN
:
8762 if (h
!= NULL
&& !bfd_link_pic (info
))
8767 if ((input_section
->flags
& SEC_ALLOC
) == 0
8771 if (bfd_link_pic (info
)
8773 || ppc_elf_hash_entry (h
)->dyn_relocs
!= NULL
)
8774 && ((h
!= NULL
&& pc_dynrelocs (h
))
8775 || must_be_dyn_reloc (info
, r_type
)))
8777 && ppc_elf_hash_entry (h
)->dyn_relocs
!= NULL
))
8785 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8786 "create relocation for %s\n",
8787 (h
&& h
->root
.root
.string
8788 ? h
->root
.root
.string
: "<unknown>"));
8791 /* When generating a shared object, these relocations
8792 are copied into the output file to be resolved at run
8795 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8798 if (outrel
.r_offset
== (bfd_vma
) -1
8799 || outrel
.r_offset
== (bfd_vma
) -2)
8800 skip
= (int) outrel
.r_offset
;
8801 outrel
.r_offset
+= (input_section
->output_section
->vma
8802 + input_section
->output_offset
);
8805 memset (&outrel
, 0, sizeof outrel
);
8806 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8809 BFD_ASSERT (indx
!= -1);
8810 unresolved_reloc
= FALSE
;
8811 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8812 outrel
.r_addend
= rel
->r_addend
;
8816 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8818 if (r_type
!= R_PPC_ADDR32
)
8822 /* If we get here when building a static
8823 executable, then the libc startup function
8824 responsible for applying indirect function
8825 relocations is going to complain about
8827 If we get here when building a dynamic
8828 executable, it will be because we have
8829 a text relocation. The dynamic loader
8830 will set the text segment writable and
8831 non-executable to apply text relocations.
8832 So we'll segfault when trying to run the
8833 indirection function to resolve the reloc. */
8834 info
->callbacks
->einfo
8835 /* xgettext:c-format */
8836 (_("%H: relocation %s for indirect "
8837 "function %s unsupported\n"),
8838 input_bfd
, input_section
, rel
->r_offset
,
8843 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8845 else if (sec
== NULL
|| sec
->owner
== NULL
)
8847 bfd_set_error (bfd_error_bad_value
);
8854 /* We are turning this relocation into one
8855 against a section symbol. It would be
8856 proper to subtract the symbol's value,
8857 osec->vma, from the emitted reloc addend,
8858 but ld.so expects buggy relocs.
8859 FIXME: Why not always use a zero index? */
8860 osec
= sec
->output_section
;
8861 indx
= elf_section_data (osec
)->dynindx
;
8864 osec
= htab
->elf
.text_index_section
;
8865 indx
= elf_section_data (osec
)->dynindx
;
8867 BFD_ASSERT (indx
!= 0);
8870 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8871 indx
, osec
->name
, osec
->flags
,
8872 h
->root
.root
.string
);
8876 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8878 else if (ifunc
!= NULL
)
8879 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8881 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8884 sreloc
= elf_section_data (input_section
)->sreloc
;
8887 sreloc
= htab
->elf
.irelplt
;
8889 htab
->local_ifunc_resolver
= 1;
8890 else if (is_static_defined (h
))
8891 htab
->maybe_local_ifunc_resolver
= 1;
8896 loc
= sreloc
->contents
;
8897 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8898 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8903 /* This reloc will be computed at runtime. Clear the memory
8904 so that it contains a predictable value for prelink. */
8907 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
8914 case R_PPC_RELAX_PLT
:
8915 case R_PPC_RELAX_PLTREL24
:
8918 struct plt_entry
*ent
;
8919 bfd_vma got2_addend
= 0;
8921 if (r_type
== R_PPC_RELAX_PLTREL24
)
8923 if (bfd_link_pic (info
))
8924 got2_addend
= addend
;
8927 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
8928 if (htab
->plt_type
== PLT_NEW
)
8929 relocation
= (htab
->glink
->output_section
->vma
8930 + htab
->glink
->output_offset
8931 + ent
->glink_offset
);
8933 relocation
= (htab
->elf
.splt
->output_section
->vma
8934 + htab
->elf
.splt
->output_offset
8943 size_t insn_offset
= rel
->r_offset
;
8946 if (bfd_link_pic (info
))
8948 relocation
-= (input_section
->output_section
->vma
8949 + input_section
->output_offset
8950 + rel
->r_offset
- 4);
8951 stub
= shared_stub_entry
;
8952 bfd_put_32 (input_bfd
, stub
[0], contents
+ insn_offset
- 12);
8953 bfd_put_32 (input_bfd
, stub
[1], contents
+ insn_offset
- 8);
8954 bfd_put_32 (input_bfd
, stub
[2], contents
+ insn_offset
- 4);
8956 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
8961 size
= ARRAY_SIZE (stub_entry
);
8964 relocation
+= addend
;
8965 if (bfd_link_relocatable (info
))
8968 /* First insn is HA, second is LO. */
8970 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
8971 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8975 insn
|= relocation
& 0xffff;
8976 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8984 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8988 /* Rewrite the reloc and convert one of the trailing nop
8989 relocs to describe this relocation. */
8990 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
8991 /* The relocs are at the bottom 2 bytes */
8992 wrel
->r_offset
= rel
->r_offset
+ d_offset
;
8993 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
8994 wrel
->r_addend
= rel
->r_addend
;
8995 memmove (wrel
+ 1, wrel
, (relend
- wrel
- 1) * sizeof (*wrel
));
8997 wrel
->r_offset
+= 4;
8998 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
9002 /* Indirect .sdata relocation. */
9003 case R_PPC_EMB_SDAI16
:
9004 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
9005 if (!is_static_defined (htab
->sdata
[0].sym
))
9007 unresolved_reloc
= TRUE
;
9011 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
9012 h
, relocation
, rel
);
9016 /* Indirect .sdata2 relocation. */
9017 case R_PPC_EMB_SDA2I16
:
9018 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
9019 if (!is_static_defined (htab
->sdata
[1].sym
))
9021 unresolved_reloc
= TRUE
;
9025 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
9026 h
, relocation
, rel
);
9030 /* Handle the TOC16 reloc. We want to use the offset within the .got
9031 section, not the actual VMA. This is appropriate when generating
9032 an embedded ELF object, for which the .got section acts like the
9033 AIX .toc section. */
9034 case R_PPC_TOC16
: /* phony GOT16 relocations */
9035 if (sec
== NULL
|| sec
->output_section
== NULL
)
9037 unresolved_reloc
= TRUE
;
9040 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
9042 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
9045 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
9048 case R_PPC_PLTREL24
:
9049 if (h
!= NULL
&& ifunc
== NULL
)
9051 struct plt_entry
*ent
;
9053 ent
= find_plt_ent (&h
->plt
.plist
, got2
,
9054 bfd_link_pic (info
) ? addend
: 0);
9056 || htab
->elf
.splt
== NULL
)
9058 /* We didn't make a PLT entry for this symbol. This
9059 happens when statically linking PIC code, or when
9060 using -Bsymbolic. */
9064 /* Relocation is to the entry for this symbol in the
9065 procedure linkage table. */
9066 unresolved_reloc
= FALSE
;
9067 if (htab
->plt_type
== PLT_NEW
)
9068 relocation
= (htab
->glink
->output_section
->vma
9069 + htab
->glink
->output_offset
9070 + ent
->glink_offset
);
9072 relocation
= (htab
->elf
.splt
->output_section
->vma
9073 + htab
->elf
.splt
->output_offset
9078 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9079 addend specifies the GOT pointer offset within .got2.
9080 Don't apply it to the relocation field. */
9084 /* Relocate against _SDA_BASE_. */
9085 case R_PPC_SDAREL16
:
9088 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
9091 || sec
->output_section
== NULL
9092 || !is_static_defined (sda
))
9094 unresolved_reloc
= TRUE
;
9097 addend
-= SYM_VAL (sda
);
9099 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9100 if (!(strcmp (name
, ".sdata") == 0
9101 || strcmp (name
, ".sbss") == 0))
9104 /* xgettext:c-format */
9105 (_("%pB: the target (%s) of a %s relocation is "
9106 "in the wrong output section (%s)"),
9115 /* Relocate against _SDA2_BASE_. */
9116 case R_PPC_EMB_SDA2REL
:
9119 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
9122 || sec
->output_section
== NULL
9123 || !is_static_defined (sda
))
9125 unresolved_reloc
= TRUE
;
9128 addend
-= SYM_VAL (sda
);
9130 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9131 if (!(strcmp (name
, ".sdata2") == 0
9132 || strcmp (name
, ".sbss2") == 0))
9135 /* xgettext:c-format */
9136 (_("%pB: the target (%s) of a %s relocation is "
9137 "in the wrong output section (%s)"),
9146 case R_PPC_VLE_LO16A
:
9147 relocation
= relocation
+ addend
;
9148 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9149 contents
+ rel
->r_offset
, relocation
,
9150 split16a_type
, htab
->params
->vle_reloc_fixup
);
9153 case R_PPC_VLE_LO16D
:
9154 relocation
= relocation
+ addend
;
9155 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9156 contents
+ rel
->r_offset
, relocation
,
9157 split16d_type
, htab
->params
->vle_reloc_fixup
);
9160 case R_PPC_VLE_HI16A
:
9161 relocation
= (relocation
+ addend
) >> 16;
9162 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9163 contents
+ rel
->r_offset
, relocation
,
9164 split16a_type
, htab
->params
->vle_reloc_fixup
);
9167 case R_PPC_VLE_HI16D
:
9168 relocation
= (relocation
+ addend
) >> 16;
9169 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9170 contents
+ rel
->r_offset
, relocation
,
9171 split16d_type
, htab
->params
->vle_reloc_fixup
);
9174 case R_PPC_VLE_HA16A
:
9175 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9176 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9177 contents
+ rel
->r_offset
, relocation
,
9178 split16a_type
, htab
->params
->vle_reloc_fixup
);
9181 case R_PPC_VLE_HA16D
:
9182 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9183 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9184 contents
+ rel
->r_offset
, relocation
,
9185 split16d_type
, htab
->params
->vle_reloc_fixup
);
9188 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9189 case R_PPC_EMB_SDA21
:
9190 case R_PPC_VLE_SDA21
:
9191 case R_PPC_EMB_RELSDA
:
9192 case R_PPC_VLE_SDA21_LO
:
9197 struct elf_link_hash_entry
*sda
= NULL
;
9199 if (sec
== NULL
|| sec
->output_section
== NULL
)
9201 unresolved_reloc
= TRUE
;
9205 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9206 if (strcmp (name
, ".sdata") == 0
9207 || strcmp (name
, ".sbss") == 0)
9210 sda
= htab
->sdata
[0].sym
;
9212 else if (strcmp (name
, ".sdata2") == 0
9213 || strcmp (name
, ".sbss2") == 0)
9216 sda
= htab
->sdata
[1].sym
;
9218 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
9219 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
9226 /* xgettext:c-format */
9227 (_("%pB: the target (%s) of a %s relocation is "
9228 "in the wrong output section (%s)"),
9234 bfd_set_error (bfd_error_bad_value
);
9241 if (!is_static_defined (sda
))
9243 unresolved_reloc
= TRUE
;
9246 addend
-= SYM_VAL (sda
);
9249 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9251 && (r_type
== R_PPC_VLE_SDA21
9252 || r_type
== R_PPC_VLE_SDA21_LO
))
9254 relocation
= relocation
+ addend
;
9257 /* Force e_li insn, keeping RT from original insn. */
9261 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9262 /* Top 4 bits of value to 17..20. */
9263 insn
|= (relocation
& 0xf0000) >> 5;
9264 /* Next 5 bits of the value to 11..15. */
9265 insn
|= (relocation
& 0xf800) << 5;
9266 /* And the final 11 bits of the value to bits 21 to 31. */
9267 insn
|= relocation
& 0x7ff;
9269 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9271 if (r_type
== R_PPC_VLE_SDA21
9272 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
9276 else if (r_type
== R_PPC_EMB_SDA21
9277 || r_type
== R_PPC_VLE_SDA21
9278 || r_type
== R_PPC_VLE_SDA21_LO
)
9280 /* Fill in register field. */
9281 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
9283 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9287 case R_PPC_VLE_SDAREL_LO16A
:
9288 case R_PPC_VLE_SDAREL_LO16D
:
9289 case R_PPC_VLE_SDAREL_HI16A
:
9290 case R_PPC_VLE_SDAREL_HI16D
:
9291 case R_PPC_VLE_SDAREL_HA16A
:
9292 case R_PPC_VLE_SDAREL_HA16D
:
9296 struct elf_link_hash_entry
*sda
= NULL
;
9298 if (sec
== NULL
|| sec
->output_section
== NULL
)
9300 unresolved_reloc
= TRUE
;
9304 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9305 if (strcmp (name
, ".sdata") == 0
9306 || strcmp (name
, ".sbss") == 0)
9307 sda
= htab
->sdata
[0].sym
;
9308 else if (strcmp (name
, ".sdata2") == 0
9309 || strcmp (name
, ".sbss2") == 0)
9310 sda
= htab
->sdata
[1].sym
;
9314 /* xgettext:c-format */
9315 (_("%pB: the target (%s) of a %s relocation is "
9316 "in the wrong output section (%s)"),
9322 bfd_set_error (bfd_error_bad_value
);
9327 if (sda
== NULL
|| !is_static_defined (sda
))
9329 unresolved_reloc
= TRUE
;
9332 value
= relocation
+ addend
- SYM_VAL (sda
);
9334 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
9335 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9336 contents
+ rel
->r_offset
, value
,
9338 htab
->params
->vle_reloc_fixup
);
9339 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
9340 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9341 contents
+ rel
->r_offset
, value
,
9343 htab
->params
->vle_reloc_fixup
);
9344 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
9346 value
= value
>> 16;
9347 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9348 contents
+ rel
->r_offset
, value
,
9350 htab
->params
->vle_reloc_fixup
);
9352 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
9354 value
= value
>> 16;
9355 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9356 contents
+ rel
->r_offset
, value
,
9358 htab
->params
->vle_reloc_fixup
);
9360 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
9362 value
= (value
+ 0x8000) >> 16;
9363 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9364 contents
+ rel
->r_offset
, value
,
9366 htab
->params
->vle_reloc_fixup
);
9368 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
9370 value
= (value
+ 0x8000) >> 16;
9371 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9372 contents
+ rel
->r_offset
, value
,
9374 htab
->params
->vle_reloc_fixup
);
9379 case R_PPC_VLE_ADDR20
:
9380 ppc_elf_vle_split20 (output_bfd
, contents
+ rel
->r_offset
, relocation
);
9383 /* Relocate against the beginning of the section. */
9385 case R_PPC_SECTOFF_LO
:
9386 case R_PPC_SECTOFF_HI
:
9387 case R_PPC_SECTOFF_HA
:
9388 if (sec
== NULL
|| sec
->output_section
== NULL
)
9390 unresolved_reloc
= TRUE
;
9393 addend
-= sec
->output_section
->vma
;
9396 /* Negative relocations. */
9397 case R_PPC_EMB_NADDR32
:
9398 case R_PPC_EMB_NADDR16
:
9399 case R_PPC_EMB_NADDR16_LO
:
9400 case R_PPC_EMB_NADDR16_HI
:
9401 case R_PPC_EMB_NADDR16_HA
:
9402 addend
-= 2 * relocation
;
9406 case R_PPC_GLOB_DAT
:
9407 case R_PPC_JMP_SLOT
:
9408 case R_PPC_RELATIVE
:
9409 case R_PPC_IRELATIVE
:
9411 case R_PPC_PLTREL32
:
9412 case R_PPC_PLT16_LO
:
9413 case R_PPC_PLT16_HI
:
9414 case R_PPC_PLT16_HA
:
9416 case R_PPC_EMB_RELSEC16
:
9417 case R_PPC_EMB_RELST_LO
:
9418 case R_PPC_EMB_RELST_HI
:
9419 case R_PPC_EMB_RELST_HA
:
9420 case R_PPC_EMB_BIT_FLD
:
9421 /* xgettext:c-format */
9422 _bfd_error_handler (_("%pB: %s unsupported"),
9423 input_bfd
, howto
->name
);
9425 bfd_set_error (bfd_error_invalid_operation
);
9430 /* Do any further special processing. */
9436 case R_PPC_ADDR16_HA
:
9437 case R_PPC_REL16_HA
:
9438 case R_PPC_REL16DX_HA
:
9439 case R_PPC_SECTOFF_HA
:
9440 case R_PPC_TPREL16_HA
:
9441 case R_PPC_DTPREL16_HA
:
9442 case R_PPC_EMB_NADDR16_HA
:
9443 case R_PPC_EMB_RELST_HA
:
9444 /* It's just possible that this symbol is a weak symbol
9445 that's not actually defined anywhere. In that case,
9446 'sec' would be NULL, and we should leave the symbol
9447 alone (it will be set to zero elsewhere in the link). */
9452 case R_PPC_PLT16_HA
:
9453 case R_PPC_GOT16_HA
:
9454 case R_PPC_GOT_TLSGD16_HA
:
9455 case R_PPC_GOT_TLSLD16_HA
:
9456 case R_PPC_GOT_TPREL16_HA
:
9457 case R_PPC_GOT_DTPREL16_HA
:
9458 /* Add 0x10000 if sign bit in 0:15 is set.
9459 Bits 0:15 are not used. */
9464 case R_PPC_ADDR16_LO
:
9466 case R_PPC_GOT16_LO
:
9467 case R_PPC_SDAREL16
:
9469 case R_PPC_SECTOFF_LO
:
9470 case R_PPC_DTPREL16
:
9471 case R_PPC_DTPREL16_LO
:
9473 case R_PPC_TPREL16_LO
:
9474 case R_PPC_GOT_TLSGD16
:
9475 case R_PPC_GOT_TLSGD16_LO
:
9476 case R_PPC_GOT_TLSLD16
:
9477 case R_PPC_GOT_TLSLD16_LO
:
9478 case R_PPC_GOT_DTPREL16
:
9479 case R_PPC_GOT_DTPREL16_LO
:
9480 case R_PPC_GOT_TPREL16
:
9481 case R_PPC_GOT_TPREL16_LO
:
9483 /* The 32-bit ABI lacks proper relocations to deal with
9484 certain 64-bit instructions. Prevent damage to bits
9485 that make up part of the insn opcode. */
9486 unsigned int insn
, mask
, lobit
;
9488 insn
= bfd_get_32 (input_bfd
,
9489 contents
+ rel
->r_offset
- d_offset
);
9491 if (is_insn_ds_form (insn
))
9493 else if (is_insn_dq_form (insn
))
9497 relocation
+= addend
;
9498 addend
= insn
& mask
;
9499 lobit
= mask
& relocation
;
9502 relocation
^= lobit
;
9503 info
->callbacks
->einfo
9504 /* xgettext:c-format */
9505 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9506 input_bfd
, input_section
, rel
->r_offset
,
9507 howto
->name
, sym_name
, mask
+ 1);
9508 bfd_set_error (bfd_error_bad_value
);
9516 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9517 "offset = %ld, addend = %ld\n",
9522 (long) rel
->r_offset
,
9526 if (unresolved_reloc
9527 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9529 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9530 rel
->r_offset
) != (bfd_vma
) -1)
9532 info
->callbacks
->einfo
9533 /* xgettext:c-format */
9534 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9535 input_bfd
, input_section
, rel
->r_offset
,
9541 /* 16-bit fields in insns mostly have signed values, but a
9542 few insns have 16-bit unsigned values. Really, we should
9543 have different reloc types. */
9544 if (howto
->complain_on_overflow
!= complain_overflow_dont
9545 && howto
->dst_mask
== 0xffff
9546 && (input_section
->flags
& SEC_CODE
) != 0)
9548 enum complain_overflow complain
= complain_overflow_signed
;
9550 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9554 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9555 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9556 complain
= complain_overflow_bitfield
;
9557 else if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9558 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9559 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
9560 complain
= complain_overflow_unsigned
;
9562 if (howto
->complain_on_overflow
!= complain
)
9565 alt_howto
.complain_on_overflow
= complain
;
9570 if (r_type
== R_PPC_REL16DX_HA
)
9572 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9573 if (rel
->r_offset
+ 4 > input_section
->size
)
9574 r
= bfd_reloc_outofrange
;
9579 relocation
+= addend
;
9580 relocation
-= (rel
->r_offset
9581 + input_section
->output_offset
9582 + input_section
->output_section
->vma
);
9584 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9586 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
9587 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9592 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9593 rel
->r_offset
, relocation
, addend
);
9595 if (r
!= bfd_reloc_ok
)
9597 if (r
== bfd_reloc_overflow
)
9600 /* On code like "if (foo) foo();" don't report overflow
9601 on a branch to zero when foo is undefined. */
9604 && (h
->root
.type
== bfd_link_hash_undefweak
9605 || h
->root
.type
== bfd_link_hash_undefined
)
9606 && is_branch_reloc (r_type
)))
9607 info
->callbacks
->reloc_overflow
9608 (info
, (h
? &h
->root
: NULL
), sym_name
, howto
->name
,
9609 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
);
9613 info
->callbacks
->einfo
9614 /* xgettext:c-format */
9615 (_("%H: %s reloc against `%s': error %d\n"),
9616 input_bfd
, input_section
, rel
->r_offset
,
9617 howto
->name
, sym_name
, (int) r
);
9628 Elf_Internal_Shdr
*rel_hdr
;
9629 size_t deleted
= rel
- wrel
;
9631 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
9632 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9633 if (rel_hdr
->sh_size
== 0)
9635 /* It is too late to remove an empty reloc section. Leave
9637 ??? What is wrong with an empty section??? */
9638 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
9643 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
9644 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9645 input_section
->reloc_count
-= deleted
;
9649 fprintf (stderr
, "\n");
9652 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9653 && input_section
->size
!= input_section
->rawsize
9654 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9655 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9657 /* Branch around the trampolines. */
9658 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9659 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9662 if (htab
->params
->ppc476_workaround
9663 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9664 && (!bfd_link_relocatable (info
)
9665 || (input_section
->output_section
->alignment_power
9666 >= htab
->params
->pagesize_p2
)))
9668 bfd_vma start_addr
, end_addr
, addr
;
9669 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9671 if (relax_info
->workaround_size
!= 0)
9677 bfd_put_32 (input_bfd
, BA
, fill
);
9678 p
= contents
+ input_section
->size
- relax_info
->workaround_size
;
9679 n
= relax_info
->workaround_size
>> 2;
9682 memcpy (p
, fill
, 4);
9687 /* The idea is: Replace the last instruction on a page with a
9688 branch to a patch area. Put the insn there followed by a
9689 branch back to the next page. Complicated a little by
9690 needing to handle moved conditional branches, and by not
9691 wanting to touch data-in-text. */
9693 start_addr
= (input_section
->output_section
->vma
9694 + input_section
->output_offset
);
9695 end_addr
= (start_addr
+ input_section
->size
9696 - relax_info
->workaround_size
);
9697 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9701 bfd_vma offset
= addr
- start_addr
;
9702 Elf_Internal_Rela
*lo
, *hi
;
9703 bfd_boolean is_data
;
9704 bfd_vma patch_off
, patch_addr
;
9707 /* Do we have a data reloc at this offset? If so, leave
9715 rel
= lo
+ (hi
- lo
) / 2;
9716 if (rel
->r_offset
< offset
)
9718 else if (rel
->r_offset
> offset
+ 3)
9722 switch (ELF32_R_TYPE (rel
->r_info
))
9739 /* Some instructions can be left alone too. Unconditional
9740 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9741 avoid the icache failure.
9743 The problem occurs due to prefetch across a page boundary
9744 where stale instructions can be fetched from the next
9745 page, and the mechanism for flushing these bad
9746 instructions fails under certain circumstances. The
9747 unconditional branches:
9748 1) Branch: b, bl, ba, bla,
9749 2) Branch Conditional: bc, bca, bcl, bcla,
9750 3) Branch Conditional to Link Register: bclr, bclrl,
9751 where (2) and (3) have BO=0x14 making them unconditional,
9752 prevent the bad prefetch because the prefetch itself is
9753 affected by these instructions. This happens even if the
9754 instruction is not executed.
9759 . addi 9,9,new_page@l
9766 The bctr is not predicted taken due to ctr not being
9767 ready, so prefetch continues on past the bctr into the
9768 new page which might have stale instructions. If they
9769 fail to be flushed, then they will be executed after the
9770 bctr executes. Either of the following modifications
9771 prevent the bad prefetch from happening in the first
9774 . lis 9,new_page@ha lis 9,new_page@ha
9775 . addi 9,9,new_page@l addi 9,9,new_page@l
9778 . nop b somewhere_else
9779 . b somewhere_else nop
9780 . new_page: new_page:
9782 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9783 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9784 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9785 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9786 || ((insn
& (0x3f << 26)) == (19u << 26)
9787 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9788 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9791 patch_addr
= (start_addr
+ input_section
->size
9792 - relax_info
->workaround_size
);
9793 patch_addr
= (patch_addr
+ 15) & -16;
9794 patch_off
= patch_addr
- start_addr
;
9795 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9798 && rel
->r_offset
>= offset
9799 && rel
->r_offset
< offset
+ 4)
9803 /* If the insn we are patching had a reloc, adjust the
9804 reloc r_offset so that the reloc applies to the moved
9805 location. This matters for -r and --emit-relocs. */
9806 if (rel
+ 1 != relend
)
9808 Elf_Internal_Rela tmp
= *rel
;
9810 /* Keep the relocs sorted by r_offset. */
9811 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9814 relend
[-1].r_offset
+= patch_off
- offset
;
9816 /* Adjust REL16 addends too. */
9817 switch (ELF32_R_TYPE (relend
[-1].r_info
))
9820 case R_PPC_REL16_LO
:
9821 case R_PPC_REL16_HI
:
9822 case R_PPC_REL16_HA
:
9823 relend
[-1].r_addend
+= patch_off
- offset
;
9829 /* If we are building a PIE or shared library with
9830 non-PIC objects, perhaps we had a dynamic reloc too?
9831 If so, the dynamic reloc must move with the insn. */
9832 sreloc
= elf_section_data (input_section
)->sreloc
;
9835 Elf32_External_Rela
*slo
, *shi
, *srelend
;
9838 slo
= (Elf32_External_Rela
*) sreloc
->contents
;
9839 shi
= srelend
= slo
+ sreloc
->reloc_count
;
9840 soffset
= (offset
+ input_section
->output_section
->vma
9841 + input_section
->output_offset
);
9844 Elf32_External_Rela
*srel
= slo
+ (shi
- slo
) / 2;
9845 bfd_elf32_swap_reloca_in (output_bfd
, (bfd_byte
*) srel
,
9847 if (outrel
.r_offset
< soffset
)
9849 else if (outrel
.r_offset
> soffset
+ 3)
9853 if (srel
+ 1 != srelend
)
9855 memmove (srel
, srel
+ 1,
9856 (srelend
- (srel
+ 1)) * sizeof (*srel
));
9859 outrel
.r_offset
+= patch_off
- offset
;
9860 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
9870 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9871 && (insn
& 2) == 0 /* relative */)
9873 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
9875 delta
+= offset
- patch_off
;
9876 if (bfd_link_relocatable (info
) && rel
!= NULL
)
9878 if (!bfd_link_relocatable (info
) && rel
!= NULL
)
9880 enum elf_ppc_reloc_type r_type
;
9882 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
9883 if (r_type
== R_PPC_REL14_BRTAKEN
)
9884 insn
|= BRANCH_PREDICT_BIT
;
9885 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
9886 insn
&= ~BRANCH_PREDICT_BIT
;
9888 BFD_ASSERT (r_type
== R_PPC_REL14
);
9890 if ((r_type
== R_PPC_REL14_BRTAKEN
9891 || r_type
== R_PPC_REL14_BRNTAKEN
)
9892 && delta
+ 0x8000 < 0x10000
9893 && (bfd_signed_vma
) delta
< 0)
9894 insn
^= BRANCH_PREDICT_BIT
;
9896 if (delta
+ 0x8000 < 0x10000)
9898 bfd_put_32 (input_bfd
,
9899 (insn
& ~0xfffc) | (delta
& 0xfffc),
9900 contents
+ patch_off
);
9902 bfd_put_32 (input_bfd
,
9903 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9904 contents
+ patch_off
);
9911 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
9913 relend
[-1].r_offset
+= 8;
9914 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
9916 bfd_put_32 (input_bfd
,
9917 (insn
& ~0xfffc) | 8,
9918 contents
+ patch_off
);
9920 bfd_put_32 (input_bfd
,
9921 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9922 contents
+ patch_off
);
9924 bfd_put_32 (input_bfd
,
9925 B
| ((delta
- 8) & 0x3fffffc),
9926 contents
+ patch_off
);
9932 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
9934 bfd_put_32 (input_bfd
,
9935 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9936 contents
+ patch_off
);
9939 BFD_ASSERT (patch_off
<= input_section
->size
);
9940 relax_info
->workaround_size
= input_section
->size
- patch_off
;
9947 /* Finish up dynamic symbol handling. We set the contents of various
9948 dynamic sections here. */
9951 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9952 struct bfd_link_info
*info
,
9953 struct elf_link_hash_entry
*h
,
9954 Elf_Internal_Sym
*sym
)
9956 struct ppc_elf_link_hash_table
*htab
;
9957 struct plt_entry
*ent
;
9958 bfd_boolean doneone
;
9961 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
9962 h
->root
.root
.string
);
9965 htab
= ppc_elf_hash_table (info
);
9966 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
9969 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9970 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9974 Elf_Internal_Rela rela
;
9976 bfd_vma reloc_index
;
9978 if (htab
->plt_type
== PLT_NEW
9979 || !htab
->elf
.dynamic_sections_created
9980 || h
->dynindx
== -1)
9981 reloc_index
= ent
->plt
.offset
/ 4;
9984 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
9985 / htab
->plt_slot_size
);
9986 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
9987 && htab
->plt_type
== PLT_OLD
)
9988 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
9991 /* This symbol has an entry in the procedure linkage table.
9993 if (htab
->plt_type
== PLT_VXWORKS
9994 && htab
->elf
.dynamic_sections_created
9995 && h
->dynindx
!= -1)
9998 const bfd_vma
*plt_entry
;
10000 /* The first three entries in .got.plt are reserved. */
10001 got_offset
= (reloc_index
+ 3) * 4;
10003 /* Use the right PLT. */
10004 plt_entry
= bfd_link_pic (info
) ? ppc_elf_vxworks_pic_plt_entry
10005 : ppc_elf_vxworks_plt_entry
;
10007 /* Fill in the .plt on VxWorks. */
10008 if (bfd_link_pic (info
))
10010 bfd_put_32 (output_bfd
,
10011 plt_entry
[0] | PPC_HA (got_offset
),
10012 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 0);
10013 bfd_put_32 (output_bfd
,
10014 plt_entry
[1] | PPC_LO (got_offset
),
10015 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 4);
10019 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
10021 bfd_put_32 (output_bfd
,
10022 plt_entry
[0] | PPC_HA (got_loc
),
10023 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 0);
10024 bfd_put_32 (output_bfd
,
10025 plt_entry
[1] | PPC_LO (got_loc
),
10026 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 4);
10029 bfd_put_32 (output_bfd
, plt_entry
[2],
10030 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 8);
10031 bfd_put_32 (output_bfd
, plt_entry
[3],
10032 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 12);
10034 /* This instruction is an immediate load. The value loaded is
10035 the byte offset of the R_PPC_JMP_SLOT relocation from the
10036 start of the .rela.plt section. The value is stored in the
10037 low-order 16 bits of the load instruction. */
10038 /* NOTE: It appears that this is now an index rather than a
10039 prescaled offset. */
10040 bfd_put_32 (output_bfd
,
10041 plt_entry
[4] | reloc_index
,
10042 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 16);
10043 /* This instruction is a PC-relative branch whose target is
10044 the start of the PLT section. The address of this branch
10045 instruction is 20 bytes beyond the start of this PLT entry.
10046 The address is encoded in bits 6-29, inclusive. The value
10047 stored is right-shifted by two bits, permitting a 26-bit
10049 bfd_put_32 (output_bfd
,
10051 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
10052 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 20);
10053 bfd_put_32 (output_bfd
, plt_entry
[6],
10054 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 24);
10055 bfd_put_32 (output_bfd
, plt_entry
[7],
10056 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 28);
10058 /* Fill in the GOT entry corresponding to this PLT slot with
10059 the address immediately after the "bctr" instruction
10060 in this PLT entry. */
10061 bfd_put_32 (output_bfd
, (htab
->elf
.splt
->output_section
->vma
10062 + htab
->elf
.splt
->output_offset
10063 + ent
->plt
.offset
+ 16),
10064 htab
->elf
.sgotplt
->contents
+ got_offset
);
10066 if (!bfd_link_pic (info
))
10068 /* Fill in a couple of entries in .rela.plt.unloaded. */
10069 loc
= htab
->srelplt2
->contents
10070 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
10071 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
10072 * sizeof (Elf32_External_Rela
));
10074 /* Provide the @ha relocation for the first instruction. */
10075 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10076 + htab
->elf
.splt
->output_offset
10077 + ent
->plt
.offset
+ 2);
10078 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10080 rela
.r_addend
= got_offset
;
10081 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10082 loc
+= sizeof (Elf32_External_Rela
);
10084 /* Provide the @l relocation for the second instruction. */
10085 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10086 + htab
->elf
.splt
->output_offset
10087 + ent
->plt
.offset
+ 6);
10088 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10090 rela
.r_addend
= got_offset
;
10091 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10092 loc
+= sizeof (Elf32_External_Rela
);
10094 /* Provide a relocation for the GOT entry corresponding to this
10095 PLT slot. Point it at the middle of the .plt entry. */
10096 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
10097 + htab
->elf
.sgotplt
->output_offset
10099 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
10101 rela
.r_addend
= ent
->plt
.offset
+ 16;
10102 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10105 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10106 In particular, the offset for the relocation is not the
10107 address of the PLT entry for this function, as specified
10108 by the ABI. Instead, the offset is set to the address of
10109 the GOT slot for this function. See EABI 4.4.4.1. */
10110 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
10111 + htab
->elf
.sgotplt
->output_offset
10117 asection
*splt
= htab
->elf
.splt
;
10118 if (!htab
->elf
.dynamic_sections_created
10119 || h
->dynindx
== -1)
10120 splt
= htab
->elf
.iplt
;
10122 rela
.r_offset
= (splt
->output_section
->vma
10123 + splt
->output_offset
10124 + ent
->plt
.offset
);
10125 if (htab
->plt_type
== PLT_OLD
10126 || !htab
->elf
.dynamic_sections_created
10127 || h
->dynindx
== -1)
10129 /* We don't need to fill in the .plt. The ppc dynamic
10130 linker will fill it in. */
10134 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
10135 + htab
->glink
->output_section
->vma
10136 + htab
->glink
->output_offset
);
10137 bfd_put_32 (output_bfd
, val
,
10138 splt
->contents
+ ent
->plt
.offset
);
10142 /* Fill in the entry in the .rela.plt section. */
10144 if (!htab
->elf
.dynamic_sections_created
10145 || h
->dynindx
== -1)
10147 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
10149 && (h
->root
.type
== bfd_link_hash_defined
10150 || h
->root
.type
== bfd_link_hash_defweak
));
10151 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
10152 rela
.r_addend
= SYM_VAL (h
);
10155 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
10157 if (!htab
->elf
.dynamic_sections_created
10158 || h
->dynindx
== -1)
10160 loc
= (htab
->elf
.irelplt
->contents
10161 + (htab
->elf
.irelplt
->reloc_count
++
10162 * sizeof (Elf32_External_Rela
)));
10163 htab
->local_ifunc_resolver
= 1;
10167 loc
= (htab
->elf
.srelplt
->contents
10168 + reloc_index
* sizeof (Elf32_External_Rela
));
10169 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
10170 htab
->maybe_local_ifunc_resolver
= 1;
10172 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10174 if (!h
->def_regular
)
10176 /* Mark the symbol as undefined, rather than as
10177 defined in the .plt section. Leave the value if
10178 there were any relocations where pointer equality
10179 matters (this is a clue for the dynamic linker, to
10180 make function pointer comparisons work between an
10181 application and shared library), otherwise set it
10183 sym
->st_shndx
= SHN_UNDEF
;
10184 if (!h
->pointer_equality_needed
)
10186 else if (!h
->ref_regular_nonweak
)
10188 /* This breaks function pointer comparisons, but
10189 that is better than breaking tests for a NULL
10190 function pointer. */
10194 else if (h
->type
== STT_GNU_IFUNC
10195 && !bfd_link_pic (info
))
10197 /* Set the value of ifunc symbols in a non-pie
10198 executable to the glink entry. This is to avoid
10199 text relocations. We can't do this for ifunc in
10200 allocate_dynrelocs, as we do for normal dynamic
10201 function symbols with plt entries, because we need
10202 to keep the original value around for the ifunc
10204 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
10205 (output_bfd
, htab
->glink
->output_section
));
10206 sym
->st_value
= (ent
->glink_offset
10207 + htab
->glink
->output_offset
10208 + htab
->glink
->output_section
->vma
);
10213 if (htab
->plt_type
== PLT_NEW
10214 || !htab
->elf
.dynamic_sections_created
10215 || h
->dynindx
== -1)
10218 asection
*splt
= htab
->elf
.splt
;
10220 if (!htab
->elf
.dynamic_sections_created
10221 || h
->dynindx
== -1)
10222 splt
= htab
->elf
.iplt
;
10224 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
10225 write_glink_stub (h
, ent
, splt
, p
, info
);
10227 if (!bfd_link_pic (info
))
10228 /* We only need one non-PIC glink stub. */
10238 Elf_Internal_Rela rela
;
10241 /* This symbols needs a copy reloc. Set it up. */
10244 fprintf (stderr
, ", copy");
10247 BFD_ASSERT (h
->dynindx
!= -1);
10249 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
10251 else if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
10252 s
= htab
->elf
.sreldynrelro
;
10254 s
= htab
->elf
.srelbss
;
10255 BFD_ASSERT (s
!= NULL
);
10257 rela
.r_offset
= SYM_VAL (h
);
10258 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
10260 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
10261 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10265 fprintf (stderr
, "\n");
10271 static enum elf_reloc_type_class
10272 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
10273 const asection
*rel_sec
,
10274 const Elf_Internal_Rela
*rela
)
10276 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
10278 if (rel_sec
== htab
->elf
.irelplt
)
10279 return reloc_class_ifunc
;
10281 switch (ELF32_R_TYPE (rela
->r_info
))
10283 case R_PPC_RELATIVE
:
10284 return reloc_class_relative
;
10285 case R_PPC_JMP_SLOT
:
10286 return reloc_class_plt
;
10288 return reloc_class_copy
;
10290 return reloc_class_normal
;
10294 /* Finish up the dynamic sections. */
10297 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
10298 struct bfd_link_info
*info
)
10301 struct ppc_elf_link_hash_table
*htab
;
10304 bfd_boolean ret
= TRUE
;
10307 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
10310 htab
= ppc_elf_hash_table (info
);
10311 dynobj
= htab
->elf
.dynobj
;
10312 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
10315 if (htab
->elf
.hgot
!= NULL
)
10316 got
= SYM_VAL (htab
->elf
.hgot
);
10318 if (htab
->elf
.dynamic_sections_created
)
10320 Elf32_External_Dyn
*dyncon
, *dynconend
;
10322 BFD_ASSERT (htab
->elf
.splt
!= NULL
&& sdyn
!= NULL
);
10324 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
10325 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10326 for (; dyncon
< dynconend
; dyncon
++)
10328 Elf_Internal_Dyn dyn
;
10331 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10336 if (htab
->is_vxworks
)
10337 s
= htab
->elf
.sgotplt
;
10339 s
= htab
->elf
.splt
;
10340 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10344 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
10348 s
= htab
->elf
.srelplt
;
10349 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10353 dyn
.d_un
.d_ptr
= got
;
10357 if (htab
->local_ifunc_resolver
)
10358 info
->callbacks
->einfo
10359 (_("%X%P: text relocations and GNU indirect "
10360 "functions will result in a segfault at runtime\n"));
10361 else if (htab
->maybe_local_ifunc_resolver
)
10362 info
->callbacks
->einfo
10363 (_("%P: warning: text relocations and GNU indirect "
10364 "functions may result in a segfault at runtime\n"));
10368 if (htab
->is_vxworks
10369 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
10374 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10378 if (htab
->elf
.sgot
!= NULL
10379 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
10381 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->elf
.sgot
10382 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->elf
.sgotplt
)
10384 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
10386 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
10387 if (htab
->plt_type
== PLT_OLD
)
10389 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10390 so that a function can easily find the address of
10391 _GLOBAL_OFFSET_TABLE_. */
10392 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
10393 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10394 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
10399 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
10400 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
10401 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10402 bfd_put_32 (output_bfd
, val
, p
);
10407 /* xgettext:c-format */
10408 _bfd_error_handler (_("%s not defined in linker created %pA"),
10409 htab
->elf
.hgot
->root
.root
.string
,
10410 (htab
->elf
.sgotplt
!= NULL
10411 ? htab
->elf
.sgotplt
: htab
->elf
.sgot
));
10412 bfd_set_error (bfd_error_bad_value
);
10416 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
10419 /* Fill in the first entry in the VxWorks procedure linkage table. */
10420 if (htab
->is_vxworks
10421 && htab
->elf
.splt
!= NULL
10422 && htab
->elf
.splt
->size
!= 0
10423 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
10425 asection
*splt
= htab
->elf
.splt
;
10426 /* Use the right PLT. */
10427 const bfd_vma
*plt_entry
= (bfd_link_pic (info
)
10428 ? ppc_elf_vxworks_pic_plt0_entry
10429 : ppc_elf_vxworks_plt0_entry
);
10431 if (!bfd_link_pic (info
))
10433 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
10435 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
10436 splt
->contents
+ 0);
10437 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
10438 splt
->contents
+ 4);
10442 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
10443 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
10445 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
10446 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
10447 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
10448 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
10449 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
10450 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
10452 if (! bfd_link_pic (info
))
10454 Elf_Internal_Rela rela
;
10457 loc
= htab
->srelplt2
->contents
;
10459 /* Output the @ha relocation for the first instruction. */
10460 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10461 + htab
->elf
.splt
->output_offset
10463 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10465 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10466 loc
+= sizeof (Elf32_External_Rela
);
10468 /* Output the @l relocation for the second instruction. */
10469 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10470 + htab
->elf
.splt
->output_offset
10472 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10474 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10475 loc
+= sizeof (Elf32_External_Rela
);
10477 /* Fix up the remaining relocations. They may have the wrong
10478 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10479 in which symbols were output. */
10480 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
10482 Elf_Internal_Rela rel
;
10484 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10485 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10486 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10487 loc
+= sizeof (Elf32_External_Rela
);
10489 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10490 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10491 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10492 loc
+= sizeof (Elf32_External_Rela
);
10494 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10495 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
10496 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10497 loc
+= sizeof (Elf32_External_Rela
);
10502 if (htab
->glink
!= NULL
10503 && htab
->glink
->contents
!= NULL
10504 && htab
->elf
.dynamic_sections_created
)
10507 unsigned char *endp
;
10511 * PIC glink code is the following:
10513 * # ith PLT code stub.
10514 * addis 11,30,(plt+(i-1)*4-got)@ha
10515 * lwz 11,(plt+(i-1)*4-got)@l(11)
10519 * # A table of branches, one for each plt entry.
10520 * # The idea is that the plt call stub loads ctr and r11 with these
10521 * # addresses, so (r11 - res_0) gives the plt index * 4.
10522 * res_0: b PLTresolve
10523 * res_1: b PLTresolve
10525 * # Some number of entries towards the end can be nops
10531 * addis 11,11,(1f-res_0)@ha
10534 * 1: addi 11,11,(1b-res_0)@l
10537 * sub 11,11,12 # r11 = index * 4
10538 * addis 12,12,(got+4-1b)@ha
10539 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10540 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10543 * add 11,0,11 # r11 = index * 12 = reloc offset.
10546 * Non-PIC glink code is a little simpler.
10548 * # ith PLT code stub.
10549 * lis 11,(plt+(i-1)*4)@ha
10550 * lwz 11,(plt+(i-1)*4)@l(11)
10554 * The branch table is the same, then comes
10557 * lis 12,(got+4)@ha
10558 * addis 11,11,(-res_0)@ha
10559 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10560 * addi 11,11,(-res_0)@l # r11 = index * 4
10563 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10564 * add 11,0,11 # r11 = index * 12 = reloc offset.
10568 /* Build the branch table, one for each plt entry (less one),
10569 and perhaps some padding. */
10570 p
= htab
->glink
->contents
;
10571 p
+= htab
->glink_pltresolve
;
10572 endp
= htab
->glink
->contents
;
10573 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10574 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10576 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10581 bfd_put_32 (output_bfd
, NOP
, p
);
10585 res0
= (htab
->glink_pltresolve
10586 + htab
->glink
->output_section
->vma
10587 + htab
->glink
->output_offset
);
10589 if (htab
->params
->ppc476_workaround
)
10591 /* Ensure that a call stub at the end of a page doesn't
10592 result in prefetch over the end of the page into the
10593 glink branch table. */
10594 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10596 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10597 + htab
->glink
->output_offset
);
10599 for (page_addr
= res0
& -pagesize
;
10600 page_addr
> glink_start
;
10601 page_addr
-= pagesize
)
10603 /* We have a plt call stub that may need fixing. */
10607 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10608 insn
= bfd_get_32 (output_bfd
, loc
);
10611 /* By alignment, we know that there must be at least
10612 one other call stub before this one. */
10613 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10615 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10617 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10622 /* Last comes the PLTresolve stub. */
10623 endp
= p
+ GLINK_PLTRESOLVE
;
10624 if (bfd_link_pic (info
))
10628 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10629 + htab
->glink
->output_section
->vma
10630 + htab
->glink
->output_offset
);
10632 bfd_put_32 (output_bfd
, ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
);
10634 bfd_put_32 (output_bfd
, MFLR_0
, p
);
10636 bfd_put_32 (output_bfd
, BCL_20_31
, p
);
10638 bfd_put_32 (output_bfd
, ADDI_11_11
+ PPC_LO (bcl
- res0
), p
);
10640 bfd_put_32 (output_bfd
, MFLR_12
, p
);
10642 bfd_put_32 (output_bfd
, MTLR_0
, p
);
10644 bfd_put_32 (output_bfd
, SUB_11_11_12
, p
);
10646 bfd_put_32 (output_bfd
, ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
);
10648 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10650 bfd_put_32 (output_bfd
, LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
);
10652 bfd_put_32 (output_bfd
, LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
);
10657 bfd_put_32 (output_bfd
, LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
);
10659 bfd_put_32 (output_bfd
, LWZ_12_12
+ 4, p
);
10662 bfd_put_32 (output_bfd
, MTCTR_0
, p
);
10664 bfd_put_32 (output_bfd
, ADD_0_11_11
, p
);
10668 bfd_put_32 (output_bfd
, LIS_12
+ PPC_HA (got
+ 4), p
);
10670 bfd_put_32 (output_bfd
, ADDIS_11_11
+ PPC_HA (-res0
), p
);
10672 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10673 bfd_put_32 (output_bfd
, LWZ_0_12
+ PPC_LO (got
+ 4), p
);
10675 bfd_put_32 (output_bfd
, LWZU_0_12
+ PPC_LO (got
+ 4), p
);
10677 bfd_put_32 (output_bfd
, ADDI_11_11
+ PPC_LO (-res0
), p
);
10679 bfd_put_32 (output_bfd
, MTCTR_0
, p
);
10681 bfd_put_32 (output_bfd
, ADD_0_11_11
, p
);
10683 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10684 bfd_put_32 (output_bfd
, LWZ_12_12
+ PPC_LO (got
+ 8), p
);
10686 bfd_put_32 (output_bfd
, LWZ_12_12
+ 4, p
);
10689 bfd_put_32 (output_bfd
, ADD_11_0_11
, p
);
10691 bfd_put_32 (output_bfd
, BCTR
, p
);
10695 bfd_put_32 (output_bfd
,
10696 htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
10699 BFD_ASSERT (p
== endp
);
10702 if (htab
->glink_eh_frame
!= NULL
10703 && htab
->glink_eh_frame
->contents
!= NULL
)
10705 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10708 p
+= sizeof (glink_eh_frame_cie
);
10713 /* Offset to .glink. */
10714 val
= (htab
->glink
->output_section
->vma
10715 + htab
->glink
->output_offset
);
10716 val
-= (htab
->glink_eh_frame
->output_section
->vma
10717 + htab
->glink_eh_frame
->output_offset
);
10718 val
-= p
- htab
->glink_eh_frame
->contents
;
10719 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10721 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10722 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10723 htab
->glink_eh_frame
,
10724 htab
->glink_eh_frame
->contents
))
10731 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10732 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10733 #define TARGET_BIG_SYM powerpc_elf32_vec
10734 #define TARGET_BIG_NAME "elf32-powerpc"
10735 #define ELF_ARCH bfd_arch_powerpc
10736 #define ELF_TARGET_ID PPC32_ELF_DATA
10737 #define ELF_MACHINE_CODE EM_PPC
10738 #ifdef __QNXTARGET__
10739 #define ELF_MAXPAGESIZE 0x1000
10740 #define ELF_COMMONPAGESIZE 0x1000
10742 #define ELF_MAXPAGESIZE 0x10000
10743 #define ELF_COMMONPAGESIZE 0x10000
10745 #define ELF_MINPAGESIZE 0x1000
10746 #define elf_info_to_howto ppc_elf_info_to_howto
10748 #ifdef EM_CYGNUS_POWERPC
10749 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10753 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10756 #define elf_backend_plt_not_loaded 1
10757 #define elf_backend_want_dynrelro 1
10758 #define elf_backend_can_gc_sections 1
10759 #define elf_backend_can_refcount 1
10760 #define elf_backend_rela_normal 1
10761 #define elf_backend_caches_rawsize 1
10763 #define bfd_elf32_mkobject ppc_elf_mkobject
10764 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10765 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10766 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10767 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10768 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10769 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10770 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10772 #define elf_backend_object_p ppc_elf_object_p
10773 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10774 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10775 #define elf_backend_relocate_section ppc_elf_relocate_section
10776 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10777 #define elf_backend_check_relocs ppc_elf_check_relocs
10778 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10779 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10780 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10781 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10782 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10783 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10784 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10785 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10786 #define elf_backend_fake_sections ppc_elf_fake_sections
10787 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10788 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10789 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10790 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10791 #define elf_backend_write_core_note ppc_elf_write_core_note
10792 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10793 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10794 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10795 #define elf_backend_write_section ppc_elf_write_section
10796 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10797 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10798 #define elf_backend_action_discarded ppc_elf_action_discarded
10799 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10800 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10802 #include "elf32-target.h"
10804 /* FreeBSD Target */
10806 #undef TARGET_LITTLE_SYM
10807 #undef TARGET_LITTLE_NAME
10809 #undef TARGET_BIG_SYM
10810 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10811 #undef TARGET_BIG_NAME
10812 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10815 #define ELF_OSABI ELFOSABI_FREEBSD
10818 #define elf32_bed elf32_powerpc_fbsd_bed
10820 #include "elf32-target.h"
10822 /* VxWorks Target */
10824 #undef TARGET_LITTLE_SYM
10825 #undef TARGET_LITTLE_NAME
10827 #undef TARGET_BIG_SYM
10828 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10829 #undef TARGET_BIG_NAME
10830 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10834 /* VxWorks uses the elf default section flags for .plt. */
10835 static const struct bfd_elf_special_section
*
10836 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd
, asection
*sec
)
10838 if (sec
->name
== NULL
)
10841 if (strcmp (sec
->name
, ".plt") == 0)
10842 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
10844 return ppc_elf_get_sec_type_attr (abfd
, sec
);
10847 /* Like ppc_elf_link_hash_table_create, but overrides
10848 appropriately for VxWorks. */
10849 static struct bfd_link_hash_table
*
10850 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
10852 struct bfd_link_hash_table
*ret
;
10854 ret
= ppc_elf_link_hash_table_create (abfd
);
10857 struct ppc_elf_link_hash_table
*htab
10858 = (struct ppc_elf_link_hash_table
*)ret
;
10859 htab
->is_vxworks
= 1;
10860 htab
->plt_type
= PLT_VXWORKS
;
10861 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
10862 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
10863 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
10868 /* Tweak magic VxWorks symbols as they are loaded. */
10870 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
10871 struct bfd_link_info
*info
,
10872 Elf_Internal_Sym
*sym
,
10873 const char **namep
,
10878 if (!elf_vxworks_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
,
10882 return ppc_elf_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
, valp
);
10886 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10888 ppc_elf_final_write_processing (abfd
, linker
);
10889 elf_vxworks_final_write_processing (abfd
, linker
);
10892 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10894 #undef elf_backend_want_plt_sym
10895 #define elf_backend_want_plt_sym 1
10896 #undef elf_backend_want_got_plt
10897 #define elf_backend_want_got_plt 1
10898 #undef elf_backend_got_symbol_offset
10899 #define elf_backend_got_symbol_offset 0
10900 #undef elf_backend_plt_not_loaded
10901 #define elf_backend_plt_not_loaded 0
10902 #undef elf_backend_plt_readonly
10903 #define elf_backend_plt_readonly 1
10904 #undef elf_backend_got_header_size
10905 #define elf_backend_got_header_size 12
10906 #undef elf_backend_dtrel_excludes_plt
10907 #define elf_backend_dtrel_excludes_plt 1
10909 #undef bfd_elf32_get_synthetic_symtab
10911 #undef bfd_elf32_bfd_link_hash_table_create
10912 #define bfd_elf32_bfd_link_hash_table_create \
10913 ppc_elf_vxworks_link_hash_table_create
10914 #undef elf_backend_add_symbol_hook
10915 #define elf_backend_add_symbol_hook \
10916 ppc_elf_vxworks_add_symbol_hook
10917 #undef elf_backend_link_output_symbol_hook
10918 #define elf_backend_link_output_symbol_hook \
10919 elf_vxworks_link_output_symbol_hook
10920 #undef elf_backend_final_write_processing
10921 #define elf_backend_final_write_processing \
10922 ppc_elf_vxworks_final_write_processing
10923 #undef elf_backend_get_sec_type_attr
10924 #define elf_backend_get_sec_type_attr \
10925 ppc_elf_vxworks_get_sec_type_attr
10926 #undef elf_backend_emit_relocs
10927 #define elf_backend_emit_relocs \
10928 elf_vxworks_emit_relocs
10931 #define elf32_bed ppc_elf_vxworks_bed
10932 #undef elf_backend_post_process_headers
10934 #include "elf32-target.h"