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: unrecognised PPC reloc number: %d"),
2034 bfd_set_error (bfd_error_bad_value
);
2035 r_type
= R_PPC_NONE
;
2037 cache_ptr
->howto
= ppc_elf_howto_table
[r_type
];
2039 /* Just because the above assert didn't trigger doesn't mean that
2040 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2041 if (!cache_ptr
->howto
)
2043 /* xgettext:c-format */
2044 _bfd_error_handler (_("%pB: invalid relocation type %d"),
2046 bfd_set_error (bfd_error_bad_value
);
2048 cache_ptr
->howto
= ppc_elf_howto_table
[R_PPC_NONE
];
2052 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2054 static bfd_reloc_status_type
2055 ppc_elf_addr16_ha_reloc (bfd
*abfd
,
2056 arelent
*reloc_entry
,
2059 asection
*input_section
,
2061 char **error_message ATTRIBUTE_UNUSED
)
2063 enum elf_ppc_reloc_type r_type
;
2065 bfd_size_type octets
;
2068 if (output_bfd
!= NULL
)
2070 reloc_entry
->address
+= input_section
->output_offset
;
2071 return bfd_reloc_ok
;
2074 reloc_entry
->addend
+= 0x8000;
2075 r_type
= reloc_entry
->howto
->type
;
2076 if (r_type
!= R_PPC_REL16DX_HA
)
2077 return bfd_reloc_continue
;
2080 if (!bfd_is_com_section (symbol
->section
))
2081 value
= symbol
->value
;
2082 value
+= (reloc_entry
->addend
2083 + symbol
->section
->output_offset
2084 + symbol
->section
->output_section
->vma
);
2085 value
-= (reloc_entry
->address
2086 + input_section
->output_offset
2087 + input_section
->output_section
->vma
);
2090 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2091 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2093 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2094 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2095 return bfd_reloc_ok
;
2098 static bfd_reloc_status_type
2099 ppc_elf_unhandled_reloc (bfd
*abfd
,
2100 arelent
*reloc_entry
,
2103 asection
*input_section
,
2105 char **error_message
)
2107 /* If this is a relocatable link (output_bfd test tells us), just
2108 call the generic function. Any adjustment will be done at final
2110 if (output_bfd
!= NULL
)
2111 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2112 input_section
, output_bfd
, error_message
);
2114 if (error_message
!= NULL
)
2116 static char buf
[60];
2117 sprintf (buf
, _("generic linker can't handle %s"),
2118 reloc_entry
->howto
->name
);
2119 *error_message
= buf
;
2121 return bfd_reloc_dangerous
;
2124 /* Sections created by the linker. */
2126 typedef struct elf_linker_section
2128 /* Pointer to the bfd section. */
2132 /* Associated bss section name. */
2133 const char *bss_name
;
2134 /* Associated symbol name. */
2135 const char *sym_name
;
2136 /* Associated symbol. */
2137 struct elf_link_hash_entry
*sym
;
2138 } elf_linker_section_t
;
2140 /* Linked list of allocated pointer entries. This hangs off of the
2141 symbol lists, and provides allows us to return different pointers,
2142 based on different addend's. */
2144 typedef struct elf_linker_section_pointers
2146 /* next allocated pointer for this symbol */
2147 struct elf_linker_section_pointers
*next
;
2148 /* offset of pointer from beginning of section */
2152 /* which linker section this is */
2153 elf_linker_section_t
*lsect
;
2154 } elf_linker_section_pointers_t
;
2156 struct ppc_elf_obj_tdata
2158 struct elf_obj_tdata elf
;
2160 /* A mapping from local symbols to offsets into the various linker
2161 sections added. This is index by the symbol index. */
2162 elf_linker_section_pointers_t
**linker_section_pointers
;
2164 /* Flags used to auto-detect plt type. */
2165 unsigned int makes_plt_call
: 1;
2166 unsigned int has_rel16
: 1;
2169 #define ppc_elf_tdata(bfd) \
2170 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2172 #define elf_local_ptr_offsets(bfd) \
2173 (ppc_elf_tdata (bfd)->linker_section_pointers)
2175 #define is_ppc_elf(bfd) \
2176 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2177 && elf_object_id (bfd) == PPC32_ELF_DATA)
2179 /* Override the generic function because we store some extras. */
2182 ppc_elf_mkobject (bfd
*abfd
)
2184 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
2188 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2191 _bfd_elf_ppc_set_arch (bfd
*abfd
)
2193 unsigned long mach
= 0;
2195 unsigned char *contents
;
2197 if (abfd
->arch_info
->bits_per_word
== 32
2198 && bfd_big_endian (abfd
))
2201 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2202 if ((elf_section_data (s
)->this_hdr
.sh_flags
& SHF_PPC_VLE
) != 0)
2205 mach
= bfd_mach_ppc_vle
;
2210 s
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2211 if (s
!= NULL
&& bfd_malloc_and_get_section (abfd
, s
, &contents
))
2213 unsigned int apuinfo_size
= bfd_get_32 (abfd
, contents
+ 4);
2216 for (i
= 20; i
< apuinfo_size
+ 20 && i
+ 4 <= s
->size
; i
+= 4)
2218 unsigned int val
= bfd_get_32 (abfd
, contents
+ i
);
2221 case PPC_APUINFO_PMR
:
2222 case PPC_APUINFO_RFMCI
:
2224 mach
= bfd_mach_ppc_titan
;
2227 case PPC_APUINFO_ISEL
:
2228 case PPC_APUINFO_CACHELCK
:
2229 if (mach
== bfd_mach_ppc_titan
)
2230 mach
= bfd_mach_ppc_e500mc
;
2233 case PPC_APUINFO_SPE
:
2234 case PPC_APUINFO_EFS
:
2235 case PPC_APUINFO_BRLOCK
:
2236 if (mach
!= bfd_mach_ppc_vle
)
2237 mach
= bfd_mach_ppc_e500
;
2240 case PPC_APUINFO_VLE
:
2241 mach
= bfd_mach_ppc_vle
;
2252 if (mach
!= 0 && mach
!= -1ul)
2254 const bfd_arch_info_type
*arch
;
2256 for (arch
= abfd
->arch_info
->next
; arch
; arch
= arch
->next
)
2257 if (arch
->mach
== mach
)
2259 abfd
->arch_info
= arch
;
2266 /* Fix bad default arch selected for a 32 bit input bfd when the
2267 default is 64 bit. Also select arch based on apuinfo. */
2270 ppc_elf_object_p (bfd
*abfd
)
2272 if (!abfd
->arch_info
->the_default
)
2275 if (abfd
->arch_info
->bits_per_word
== 64)
2277 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2279 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
2281 /* Relies on arch after 64 bit default being 32 bit default. */
2282 abfd
->arch_info
= abfd
->arch_info
->next
;
2283 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
2286 return _bfd_elf_ppc_set_arch (abfd
);
2289 /* Function to set whether a module needs the -mrelocatable bit set. */
2292 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2294 BFD_ASSERT (!elf_flags_init (abfd
)
2295 || elf_elfheader (abfd
)->e_flags
== flags
);
2297 elf_elfheader (abfd
)->e_flags
= flags
;
2298 elf_flags_init (abfd
) = TRUE
;
2302 /* Support for core dump NOTE sections. */
2305 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2310 switch (note
->descsz
)
2315 case 268: /* Linux/PPC. */
2317 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2320 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
2329 /* Make a ".reg/999" section. */
2330 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2331 size
, note
->descpos
+ offset
);
2335 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2337 switch (note
->descsz
)
2342 case 128: /* Linux/PPC elf_prpsinfo. */
2343 elf_tdata (abfd
)->core
->pid
2344 = bfd_get_32 (abfd
, note
->descdata
+ 16);
2345 elf_tdata (abfd
)->core
->program
2346 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
2347 elf_tdata (abfd
)->core
->command
2348 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
2351 /* Note that for some reason, a spurious space is tacked
2352 onto the end of the args in some (at least one anyway)
2353 implementations, so strip it off if it exists. */
2356 char *command
= elf_tdata (abfd
)->core
->command
;
2357 int n
= strlen (command
);
2359 if (0 < n
&& command
[n
- 1] == ' ')
2360 command
[n
- 1] = '\0';
2367 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
2379 va_start (ap
, note_type
);
2380 memset (data
, 0, sizeof (data
));
2381 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
2382 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
2384 return elfcore_write_note (abfd
, buf
, bufsiz
,
2385 "CORE", note_type
, data
, sizeof (data
));
2396 va_start (ap
, note_type
);
2397 memset (data
, 0, 72);
2398 pid
= va_arg (ap
, long);
2399 bfd_put_32 (abfd
, pid
, data
+ 24);
2400 cursig
= va_arg (ap
, int);
2401 bfd_put_16 (abfd
, cursig
, data
+ 12);
2402 greg
= va_arg (ap
, const void *);
2403 memcpy (data
+ 72, greg
, 192);
2404 memset (data
+ 264, 0, 4);
2406 return elfcore_write_note (abfd
, buf
, bufsiz
,
2407 "CORE", note_type
, data
, sizeof (data
));
2413 ppc_elf_lookup_section_flags (char *flag_name
)
2416 if (!strcmp (flag_name
, "SHF_PPC_VLE"))
2422 /* Return address for Ith PLT stub in section PLT, for relocation REL
2423 or (bfd_vma) -1 if it should not be included. */
2426 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
2427 const asection
*plt ATTRIBUTE_UNUSED
,
2430 return rel
->address
;
2433 /* Handle a PowerPC specific section when reading an object file. This
2434 is called when bfd_section_from_shdr finds a section with an unknown
2438 ppc_elf_section_from_shdr (bfd
*abfd
,
2439 Elf_Internal_Shdr
*hdr
,
2446 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
2449 newsect
= hdr
->bfd_section
;
2450 flags
= bfd_get_section_flags (abfd
, newsect
);
2451 if (hdr
->sh_flags
& SHF_EXCLUDE
)
2452 flags
|= SEC_EXCLUDE
;
2454 if (hdr
->sh_type
== SHT_ORDERED
)
2455 flags
|= SEC_SORT_ENTRIES
;
2457 bfd_set_section_flags (abfd
, newsect
, flags
);
2461 /* Set up any other section flags and such that may be necessary. */
2464 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
2465 Elf_Internal_Shdr
*shdr
,
2468 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
2469 shdr
->sh_type
= SHT_ORDERED
;
2474 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2475 need to bump up the number of section headers. */
2478 ppc_elf_additional_program_headers (bfd
*abfd
,
2479 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2484 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2485 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2488 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2489 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2495 /* Modify the segment map for VLE executables. */
2498 ppc_elf_modify_segment_map (bfd
*abfd
,
2499 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2501 struct elf_segment_map
*m
;
2503 /* At this point in the link, output sections have already been sorted by
2504 LMA and assigned to segments. All that is left to do is to ensure
2505 there is no mixing of VLE & non-VLE sections in a text segment.
2506 If we find that case, we split the segment.
2507 We maintain the original output section order. */
2509 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
2511 struct elf_segment_map
*n
;
2514 unsigned int p_flags
;
2516 if (m
->p_type
!= PT_LOAD
|| m
->count
== 0)
2519 for (p_flags
= PF_R
, j
= 0; j
!= m
->count
; ++j
)
2521 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2523 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2526 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2527 p_flags
|= PF_PPC_VLE
;
2532 while (++j
!= m
->count
)
2534 unsigned int p_flags1
= PF_R
;
2536 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2538 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2541 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2542 p_flags1
|= PF_PPC_VLE
;
2543 if (((p_flags1
^ p_flags
) & PF_PPC_VLE
) != 0)
2546 p_flags
|= p_flags1
;
2548 /* If we're splitting a segment which originally contained rw
2549 sections then those sections might now only be in one of the
2550 two parts. So always set p_flags if splitting, even if we
2551 are being called for objcopy with p_flags_valid set. */
2552 if (j
!= m
->count
|| !m
->p_flags_valid
)
2554 m
->p_flags_valid
= 1;
2555 m
->p_flags
= p_flags
;
2560 /* Sections 0..j-1 stay in this (current) segment,
2561 the remainder are put in a new segment.
2562 The scan resumes with the new segment. */
2564 amt
= sizeof (struct elf_segment_map
);
2565 amt
+= (m
->count
- j
- 1) * sizeof (asection
*);
2566 n
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2570 n
->p_type
= PT_LOAD
;
2571 n
->count
= m
->count
- j
;
2572 for (k
= 0; k
< n
->count
; ++k
)
2573 n
->sections
[k
] = m
->sections
[j
+ k
];
2575 m
->p_size_valid
= 0;
2583 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2584 .PPC.EMB.sbss0 a normal section, and not a bss section so
2585 that the linker doesn't crater when trying to make more than
2588 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
2590 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
2591 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2592 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2593 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2594 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2595 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
2596 { STRING_COMMA_LEN (APUINFO_SECTION_NAME
), 0, SHT_NOTE
, 0 },
2597 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2598 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2599 { NULL
, 0, 0, 0, 0 }
2602 /* This is what we want for new plt/got. */
2603 static struct bfd_elf_special_section ppc_alt_plt
=
2604 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
2606 static const struct bfd_elf_special_section
*
2607 ppc_elf_get_sec_type_attr (bfd
*abfd
, asection
*sec
)
2609 const struct bfd_elf_special_section
*ssect
;
2611 /* See if this is one of the special sections. */
2612 if (sec
->name
== NULL
)
2615 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2619 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2620 ssect
= &ppc_alt_plt
;
2624 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2627 /* Very simple linked list structure for recording apuinfo values. */
2628 typedef struct apuinfo_list
2630 struct apuinfo_list
*next
;
2631 unsigned long value
;
2635 static apuinfo_list
*head
;
2636 static bfd_boolean apuinfo_set
;
2639 apuinfo_list_init (void)
2642 apuinfo_set
= FALSE
;
2646 apuinfo_list_add (unsigned long value
)
2648 apuinfo_list
*entry
= head
;
2650 while (entry
!= NULL
)
2652 if (entry
->value
== value
)
2654 entry
= entry
->next
;
2657 entry
= bfd_malloc (sizeof (* entry
));
2661 entry
->value
= value
;
2667 apuinfo_list_length (void)
2669 apuinfo_list
*entry
;
2670 unsigned long count
;
2672 for (entry
= head
, count
= 0;
2674 entry
= entry
->next
)
2680 static inline unsigned long
2681 apuinfo_list_element (unsigned long number
)
2683 apuinfo_list
* entry
;
2687 entry
= entry
->next
)
2690 return entry
? entry
->value
: 0;
2694 apuinfo_list_finish (void)
2696 apuinfo_list
*entry
;
2698 for (entry
= head
; entry
;)
2700 apuinfo_list
*next
= entry
->next
;
2708 /* Scan the input BFDs and create a linked list of
2709 the APUinfo values that will need to be emitted. */
2712 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2716 char *buffer
= NULL
;
2717 bfd_size_type largest_input_size
= 0;
2719 unsigned long length
;
2720 const char *error_message
= NULL
;
2722 if (link_info
== NULL
)
2725 apuinfo_list_init ();
2727 /* Read in the input sections contents. */
2728 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
2730 unsigned long datum
;
2732 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2736 /* xgettext:c-format */
2737 error_message
= _("corrupt %s section in %pB");
2738 length
= asec
->size
;
2743 if (largest_input_size
< asec
->size
)
2747 largest_input_size
= asec
->size
;
2748 buffer
= bfd_malloc (largest_input_size
);
2753 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2754 || (bfd_bread (buffer
, length
, ibfd
) != length
))
2756 /* xgettext:c-format */
2757 error_message
= _("unable to read in %s section from %pB");
2761 /* Verify the contents of the header. Note - we have to
2762 extract the values this way in order to allow for a
2763 host whose endian-ness is different from the target. */
2764 datum
= bfd_get_32 (ibfd
, buffer
);
2765 if (datum
!= sizeof APUINFO_LABEL
)
2768 datum
= bfd_get_32 (ibfd
, buffer
+ 8);
2772 if (strcmp (buffer
+ 12, APUINFO_LABEL
) != 0)
2775 /* Get the number of bytes used for apuinfo entries. */
2776 datum
= bfd_get_32 (ibfd
, buffer
+ 4);
2777 if (datum
+ 20 != length
)
2780 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2781 for (i
= 0; i
< datum
; i
+= 4)
2782 apuinfo_list_add (bfd_get_32 (ibfd
, buffer
+ 20 + i
));
2785 error_message
= NULL
;
2789 /* Compute the size of the output section. */
2790 unsigned num_entries
= apuinfo_list_length ();
2792 /* Set the output section size, if it exists. */
2793 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2795 if (asec
&& ! bfd_set_section_size (abfd
, asec
, 20 + num_entries
* 4))
2798 /* xgettext:c-format */
2799 error_message
= _("warning: unable to set size of %s section in %pB");
2808 _bfd_error_handler (error_message
, APUINFO_SECTION_NAME
, ibfd
);
2811 /* Prevent the output section from accumulating the input sections'
2812 contents. We have already stored this in our linked list structure. */
2815 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2816 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2818 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2820 return apuinfo_set
&& strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0;
2823 /* Finally we can generate the output section. */
2826 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2831 unsigned num_entries
;
2832 bfd_size_type length
;
2834 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2841 length
= asec
->size
;
2845 buffer
= bfd_malloc (length
);
2849 (_("failed to allocate space for new APUinfo section."));
2853 /* Create the apuinfo header. */
2854 num_entries
= apuinfo_list_length ();
2855 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2856 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2857 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2858 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2861 for (i
= 0; i
< num_entries
; i
++)
2863 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2867 if (length
!= asec
->size
)
2868 _bfd_error_handler (_("failed to compute new APUinfo section."));
2870 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2871 _bfd_error_handler (_("failed to install new APUinfo section."));
2875 apuinfo_list_finish ();
2879 is_nonpic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2881 bfd_byte buf
[4 * 4];
2883 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, sizeof buf
))
2886 return ((bfd_get_32 (abfd
, buf
+ 0) & 0xffff0000) == LIS_11
2887 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2888 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
2889 && bfd_get_32 (abfd
, buf
+ 12) == BCTR
);
2893 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2895 bfd_vma vma
= *(bfd_vma
*) ptr
;
2896 return ((section
->flags
& SEC_ALLOC
) != 0
2897 && section
->vma
<= vma
2898 && vma
< section
->vma
+ section
->size
);
2902 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2903 long dynsymcount
, asymbol
**dynsyms
,
2906 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2907 asection
*plt
, *relplt
, *dynamic
, *glink
;
2908 bfd_vma glink_vma
= 0;
2909 bfd_vma resolv_vma
= 0;
2913 long count
, i
, stub_delta
;
2920 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2923 if (dynsymcount
<= 0)
2926 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2930 plt
= bfd_get_section_by_name (abfd
, ".plt");
2934 /* Call common code to handle old-style executable PLTs. */
2935 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2936 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2937 dynsymcount
, dynsyms
, ret
);
2939 /* If this object was prelinked, the prelinker stored the address
2940 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2941 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2942 if (dynamic
!= NULL
)
2944 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2946 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2948 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2951 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2952 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2955 extdynend
= extdyn
+ dynamic
->size
;
2956 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2958 Elf_Internal_Dyn dyn
;
2959 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2961 if (dyn
.d_tag
== DT_NULL
)
2964 if (dyn
.d_tag
== DT_PPC_GOT
)
2966 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2967 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2969 && bfd_get_section_contents (abfd
, got
, buf
,
2970 g_o_t
- got
->vma
+ 4, 4))
2971 glink_vma
= bfd_get_32 (abfd
, buf
);
2978 /* Otherwise we read the first plt entry. */
2981 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
2982 glink_vma
= bfd_get_32 (abfd
, buf
);
2988 /* The .glink section usually does not survive the final
2989 link; search for the section (usually .text) where the
2990 glink stubs now reside. */
2991 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
2995 /* Determine glink PLT resolver by reading the relative branch
2996 from the first glink stub. */
2997 if (bfd_get_section_contents (abfd
, glink
, buf
,
2998 glink_vma
- glink
->vma
, 4))
3000 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3002 /* The first glink stub may either branch to the resolver ... */
3004 if ((insn
& ~0x3fffffc) == 0)
3005 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
3007 /* ... or fall through a bunch of NOPs. */
3008 else if ((insn
^ B
^ NOP
) == 0)
3010 bfd_get_section_contents (abfd
, glink
, buf
,
3011 glink_vma
- glink
->vma
+ i
, 4);
3013 if (bfd_get_32 (abfd
, buf
) != NOP
)
3015 resolv_vma
= glink_vma
+ i
;
3020 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
3021 /* If the stubs are those for -shared/-pie then we might have
3022 multiple stubs for each plt entry. If that is the case then
3023 there is no way to associate stubs with their plt entries short
3024 of figuring out the GOT pointer value used in the stub.
3025 The offsets tested here need to cover all possible values of
3026 GLINK_ENTRY_SIZE for other than __tls_get_addr_opt. */
3027 stub_off
= glink_vma
- glink
->vma
;
3028 for (stub_delta
= 16; stub_delta
<= 32; stub_delta
+= 8)
3029 if (is_nonpic_glink_stub (abfd
, glink
, stub_off
- stub_delta
))
3031 if (stub_delta
> 32)
3034 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3035 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
3038 size
= count
* sizeof (asymbol
);
3039 p
= relplt
->relocation
;
3040 for (i
= 0; i
< count
; i
++, p
++)
3042 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3044 size
+= sizeof ("+0x") - 1 + 8;
3047 size
+= sizeof (asymbol
) + sizeof ("__glink");
3050 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3052 s
= *ret
= bfd_malloc (size
);
3056 stub_off
= glink_vma
- glink
->vma
;
3057 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
3058 p
= relplt
->relocation
+ count
- 1;
3059 for (i
= 0; i
< count
; i
++)
3063 stub_off
-= stub_delta
;
3064 if (strcmp ((*p
->sym_ptr_ptr
)->name
, "__tls_get_addr_opt") == 0)
3066 *s
= **p
->sym_ptr_ptr
;
3067 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3068 we are defining a symbol, ensure one of them is set. */
3069 if ((s
->flags
& BSF_LOCAL
) == 0)
3070 s
->flags
|= BSF_GLOBAL
;
3071 s
->flags
|= BSF_SYNTHETIC
;
3073 s
->value
= stub_off
;
3076 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3077 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3081 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3082 names
+= sizeof ("+0x") - 1;
3083 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3084 names
+= strlen (names
);
3086 memcpy (names
, "@plt", sizeof ("@plt"));
3087 names
+= sizeof ("@plt");
3092 /* Add a symbol at the start of the glink branch table. */
3093 memset (s
, 0, sizeof *s
);
3095 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3097 s
->value
= glink_vma
- glink
->vma
;
3099 memcpy (names
, "__glink", sizeof ("__glink"));
3100 names
+= sizeof ("__glink");
3106 /* Add a symbol for the glink PLT resolver. */
3107 memset (s
, 0, sizeof *s
);
3109 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3111 s
->value
= resolv_vma
- glink
->vma
;
3113 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3114 names
+= sizeof ("__glink_PLTresolve");
3122 /* The following functions are specific to the ELF linker, while
3123 functions above are used generally. They appear in this file more
3124 or less in the order in which they are called. eg.
3125 ppc_elf_check_relocs is called early in the link process,
3126 ppc_elf_finish_dynamic_sections is one of the last functions
3129 /* Track PLT entries needed for a given symbol. We might need more
3130 than one glink entry per symbol when generating a pic binary. */
3133 struct plt_entry
*next
;
3135 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3136 This field stores the offset into .got2 used to initialise the
3137 GOT pointer reg. It will always be at least 32768. (Current
3138 gcc always uses an offset of 32768, but ld -r will pack .got2
3139 sections together resulting in larger offsets). */
3142 /* The .got2 section. */
3145 /* PLT refcount or offset. */
3148 bfd_signed_vma refcount
;
3152 /* .glink stub offset. */
3153 bfd_vma glink_offset
;
3156 /* Of those relocs that might be copied as dynamic relocs, this
3157 function selects those that must be copied when linking a shared
3158 library or PIE, even when the symbol is local. */
3161 must_be_dyn_reloc (struct bfd_link_info
*info
,
3162 enum elf_ppc_reloc_type r_type
)
3167 /* Only relative relocs can be resolved when the object load
3168 address isn't fixed. DTPREL32 is excluded because the
3169 dynamic linker needs to differentiate global dynamic from
3170 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3175 case R_PPC_REL14_BRTAKEN
:
3176 case R_PPC_REL14_BRNTAKEN
:
3182 case R_PPC_TPREL16_LO
:
3183 case R_PPC_TPREL16_HI
:
3184 case R_PPC_TPREL16_HA
:
3185 /* These relocations are relative but in a shared library the
3186 linker doesn't know the thread pointer base. */
3187 return bfd_link_dll (info
);
3191 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3192 copying dynamic variables from a shared lib into an app's dynbss
3193 section, and instead use a dynamic relocation to point into the
3195 #define ELIMINATE_COPY_RELOCS 1
3197 /* Used to track dynamic relocations for local symbols. */
3198 struct ppc_dyn_relocs
3200 struct ppc_dyn_relocs
*next
;
3202 /* The input section of the reloc. */
3205 /* Total number of relocs copied for the input section. */
3206 unsigned int count
: 31;
3208 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3209 unsigned int ifunc
: 1;
3212 /* PPC ELF linker hash entry. */
3214 struct ppc_elf_link_hash_entry
3216 struct elf_link_hash_entry elf
;
3218 /* If this symbol is used in the linker created sections, the processor
3219 specific backend uses this field to map the field into the offset
3220 from the beginning of the section. */
3221 elf_linker_section_pointers_t
*linker_section_pointer
;
3223 /* Track dynamic relocs copied for this symbol. */
3224 struct elf_dyn_relocs
*dyn_relocs
;
3226 /* Contexts in which symbol is used in the GOT (or TOC).
3227 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3228 corresponding relocs are encountered during check_relocs.
3229 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3230 indicate the corresponding GOT entry type is not needed. */
3231 #define TLS_GD 1 /* GD reloc. */
3232 #define TLS_LD 2 /* LD reloc. */
3233 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3234 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3235 #define TLS_TLS 16 /* Any TLS reloc. */
3236 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3237 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3240 /* Nonzero if we have seen a small data relocation referring to this
3242 unsigned char has_sda_refs
: 1;
3244 /* Flag use of given relocations. */
3245 unsigned char has_addr16_ha
: 1;
3246 unsigned char has_addr16_lo
: 1;
3249 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3251 /* PPC ELF linker hash table. */
3253 struct ppc_elf_link_hash_table
3255 struct elf_link_hash_table elf
;
3257 /* Various options passed from the linker. */
3258 struct ppc_elf_params
*params
;
3260 /* Short-cuts to get to dynamic linker sections. */
3264 elf_linker_section_t sdata
[2];
3266 asection
*glink_eh_frame
;
3268 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3271 /* Shortcut to __tls_get_addr. */
3272 struct elf_link_hash_entry
*tls_get_addr
;
3274 /* The bfd that forced an old-style PLT. */
3277 /* TLS local dynamic got entry handling. */
3279 bfd_signed_vma refcount
;
3283 /* Offset of branch table to PltResolve function in glink. */
3284 bfd_vma glink_pltresolve
;
3286 /* Size of reserved GOT entries. */
3287 unsigned int got_header_size
;
3288 /* Non-zero if allocating the header left a gap. */
3289 unsigned int got_gap
;
3291 /* The type of PLT we have chosen to use. */
3292 enum ppc_elf_plt_type plt_type
;
3294 /* True if the target system is VxWorks. */
3295 unsigned int is_vxworks
:1;
3297 /* Whether there exist local gnu indirect function resolvers,
3298 referenced by dynamic relocations. */
3299 unsigned int local_ifunc_resolver
:1;
3300 unsigned int maybe_local_ifunc_resolver
:1;
3302 /* Set if tls optimization is enabled. */
3303 unsigned int do_tls_opt
:1;
3305 /* The size of PLT entries. */
3307 /* The distance between adjacent PLT slots. */
3309 /* The size of the first PLT entry. */
3310 int plt_initial_entry_size
;
3312 /* Small local sym cache. */
3313 struct sym_cache sym_cache
;
3316 /* Rename some of the generic section flags to better document how they
3317 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3319 /* Nonzero if this section has TLS related relocations. */
3320 #define has_tls_reloc sec_flg0
3322 /* Nonzero if this section has a call to __tls_get_addr. */
3323 #define has_tls_get_addr_call sec_flg1
3325 /* Get the PPC ELF linker hash table from a link_info structure. */
3327 #define ppc_elf_hash_table(p) \
3328 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3329 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3331 /* Create an entry in a PPC ELF linker hash table. */
3333 static struct bfd_hash_entry
*
3334 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3335 struct bfd_hash_table
*table
,
3338 /* Allocate the structure if it has not already been allocated by a
3342 entry
= bfd_hash_allocate (table
,
3343 sizeof (struct ppc_elf_link_hash_entry
));
3348 /* Call the allocation method of the superclass. */
3349 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3352 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
3353 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
3354 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
3355 ppc_elf_hash_entry (entry
)->has_sda_refs
= 0;
3361 /* Create a PPC ELF linker hash table. */
3363 static struct bfd_link_hash_table
*
3364 ppc_elf_link_hash_table_create (bfd
*abfd
)
3366 struct ppc_elf_link_hash_table
*ret
;
3367 static struct ppc_elf_params default_params
3368 = { PLT_OLD
, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
3370 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
3374 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
3375 ppc_elf_link_hash_newfunc
,
3376 sizeof (struct ppc_elf_link_hash_entry
),
3383 ret
->elf
.init_plt_refcount
.refcount
= 0;
3384 ret
->elf
.init_plt_refcount
.glist
= NULL
;
3385 ret
->elf
.init_plt_offset
.offset
= 0;
3386 ret
->elf
.init_plt_offset
.glist
= NULL
;
3388 ret
->params
= &default_params
;
3390 ret
->sdata
[0].name
= ".sdata";
3391 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
3392 ret
->sdata
[0].bss_name
= ".sbss";
3394 ret
->sdata
[1].name
= ".sdata2";
3395 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
3396 ret
->sdata
[1].bss_name
= ".sbss2";
3398 ret
->plt_entry_size
= 12;
3399 ret
->plt_slot_size
= 8;
3400 ret
->plt_initial_entry_size
= 72;
3402 return &ret
->elf
.root
;
3405 /* Hook linker params into hash table. */
3408 ppc_elf_link_params (struct bfd_link_info
*info
, struct ppc_elf_params
*params
)
3410 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3413 htab
->params
= params
;
3414 params
->pagesize_p2
= bfd_log2 (params
->pagesize
);
3417 /* Create .got and the related sections. */
3420 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
3422 struct ppc_elf_link_hash_table
*htab
;
3424 if (!_bfd_elf_create_got_section (abfd
, info
))
3427 htab
= ppc_elf_hash_table (info
);
3428 if (!htab
->is_vxworks
)
3430 /* The powerpc .got has a blrl instruction in it. Mark it
3432 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
3433 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3434 if (!bfd_set_section_flags (abfd
, htab
->elf
.sgot
, flags
))
3441 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3442 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3443 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3446 ppc_elf_create_linker_section (bfd
*abfd
,
3447 struct bfd_link_info
*info
,
3449 elf_linker_section_t
*lsect
)
3453 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3454 | SEC_LINKER_CREATED
);
3456 s
= bfd_make_section_anyway_with_flags (abfd
, lsect
->name
, flags
);
3461 /* Define the sym on the first section of this name. */
3462 s
= bfd_get_section_by_name (abfd
, lsect
->name
);
3464 lsect
->sym
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, lsect
->sym_name
);
3465 if (lsect
->sym
== NULL
)
3467 lsect
->sym
->root
.u
.def
.value
= 0x8000;
3472 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
3474 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3479 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
3480 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3481 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
3483 p2align
= htab
->params
->ppc476_workaround
? 6 : 4;
3484 if (p2align
< htab
->params
->plt_stub_align
)
3485 p2align
= htab
->params
->plt_stub_align
;
3487 || !bfd_set_section_alignment (abfd
, s
, p2align
))
3490 if (!info
->no_ld_generated_unwind_info
)
3492 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3493 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3494 s
= bfd_make_section_anyway_with_flags (abfd
, ".eh_frame", flags
);
3495 htab
->glink_eh_frame
= s
;
3497 || !bfd_set_section_alignment (abfd
, s
, 2))
3501 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
3502 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
3505 || !bfd_set_section_alignment (abfd
, s
, 4))
3508 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3509 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3510 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.iplt", flags
);
3511 htab
->elf
.irelplt
= s
;
3513 || ! bfd_set_section_alignment (abfd
, s
, 2))
3516 if (!ppc_elf_create_linker_section (abfd
, info
, 0,
3520 if (!ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3527 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3528 to output sections (just like _bfd_elf_create_dynamic_sections has
3529 to create .dynbss and .rela.bss). */
3532 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3534 struct ppc_elf_link_hash_table
*htab
;
3538 htab
= ppc_elf_hash_table (info
);
3540 if (htab
->elf
.sgot
== NULL
3541 && !ppc_elf_create_got (abfd
, info
))
3544 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
3547 if (htab
->glink
== NULL
3548 && !ppc_elf_create_glink (abfd
, info
))
3551 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynsbss",
3552 SEC_ALLOC
| SEC_LINKER_CREATED
);
3557 if (! bfd_link_pic (info
))
3559 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3560 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3561 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.sbss", flags
);
3564 || ! bfd_set_section_alignment (abfd
, s
, 2))
3568 if (htab
->is_vxworks
3569 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
3573 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
3574 if (htab
->plt_type
== PLT_VXWORKS
)
3575 /* The VxWorks PLT is a loaded section with contents. */
3576 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3577 return bfd_set_section_flags (abfd
, s
, flags
);
3580 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3583 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3584 struct elf_link_hash_entry
*dir
,
3585 struct elf_link_hash_entry
*ind
)
3587 struct ppc_elf_link_hash_entry
*edir
, *eind
;
3589 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
3590 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
3592 edir
->tls_mask
|= eind
->tls_mask
;
3593 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3595 if (edir
->elf
.versioned
!= versioned_hidden
)
3596 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3597 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3598 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3599 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3600 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3601 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3603 /* If we were called to copy over info for a weak sym, that's all. */
3604 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3607 if (eind
->dyn_relocs
!= NULL
)
3609 if (edir
->dyn_relocs
!= NULL
)
3611 struct elf_dyn_relocs
**pp
;
3612 struct elf_dyn_relocs
*p
;
3614 /* Add reloc counts against the indirect sym to the direct sym
3615 list. Merge any entries against the same section. */
3616 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3618 struct elf_dyn_relocs
*q
;
3620 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3621 if (q
->sec
== p
->sec
)
3623 q
->pc_count
+= p
->pc_count
;
3624 q
->count
+= p
->count
;
3631 *pp
= edir
->dyn_relocs
;
3634 edir
->dyn_relocs
= eind
->dyn_relocs
;
3635 eind
->dyn_relocs
= NULL
;
3638 /* Copy over the GOT refcount entries that we may have already seen to
3639 the symbol which just became indirect. */
3640 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3641 eind
->elf
.got
.refcount
= 0;
3643 /* And plt entries. */
3644 if (eind
->elf
.plt
.plist
!= NULL
)
3646 if (edir
->elf
.plt
.plist
!= NULL
)
3648 struct plt_entry
**entp
;
3649 struct plt_entry
*ent
;
3651 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3653 struct plt_entry
*dent
;
3655 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3656 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3658 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3665 *entp
= edir
->elf
.plt
.plist
;
3668 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3669 eind
->elf
.plt
.plist
= NULL
;
3672 if (eind
->elf
.dynindx
!= -1)
3674 if (edir
->elf
.dynindx
!= -1)
3675 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3676 edir
->elf
.dynstr_index
);
3677 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3678 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3679 eind
->elf
.dynindx
= -1;
3680 eind
->elf
.dynstr_index
= 0;
3684 /* Hook called by the linker routine which adds symbols from an object
3685 file. We use it to put .comm items in .sbss, and not .bss. */
3688 ppc_elf_add_symbol_hook (bfd
*abfd
,
3689 struct bfd_link_info
*info
,
3690 Elf_Internal_Sym
*sym
,
3691 const char **namep ATTRIBUTE_UNUSED
,
3692 flagword
*flagsp ATTRIBUTE_UNUSED
,
3696 if (sym
->st_shndx
== SHN_COMMON
3697 && !bfd_link_relocatable (info
)
3698 && is_ppc_elf (info
->output_bfd
)
3699 && sym
->st_size
<= elf_gp_size (abfd
))
3701 /* Common symbols less than or equal to -G nn bytes are automatically
3703 struct ppc_elf_link_hash_table
*htab
;
3705 htab
= ppc_elf_hash_table (info
);
3706 if (htab
->sbss
== NULL
)
3708 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3710 if (!htab
->elf
.dynobj
)
3711 htab
->elf
.dynobj
= abfd
;
3713 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3716 if (htab
->sbss
== NULL
)
3721 *valp
= sym
->st_size
;
3724 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3725 && (abfd
->flags
& DYNAMIC
) == 0
3726 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
3727 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
3732 /* Find a linker generated pointer with a given addend and type. */
3734 static elf_linker_section_pointers_t
*
3735 elf_find_pointer_linker_section
3736 (elf_linker_section_pointers_t
*linker_pointers
,
3738 elf_linker_section_t
*lsect
)
3740 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3741 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3742 return linker_pointers
;
3747 /* Allocate a pointer to live in a linker created section. */
3750 elf_allocate_pointer_linker_section (bfd
*abfd
,
3751 elf_linker_section_t
*lsect
,
3752 struct elf_link_hash_entry
*h
,
3753 const Elf_Internal_Rela
*rel
)
3755 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3756 elf_linker_section_pointers_t
*linker_section_ptr
;
3757 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3760 BFD_ASSERT (lsect
!= NULL
);
3762 /* Is this a global symbol? */
3765 struct ppc_elf_link_hash_entry
*eh
;
3767 /* Has this symbol already been allocated? If so, our work is done. */
3768 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3769 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3774 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3778 BFD_ASSERT (is_ppc_elf (abfd
));
3780 /* Allocation of a pointer to a local symbol. */
3781 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3783 /* Allocate a table to hold the local symbols if first time. */
3786 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3789 amt
*= sizeof (elf_linker_section_pointers_t
*);
3790 ptr
= bfd_zalloc (abfd
, amt
);
3795 elf_local_ptr_offsets (abfd
) = ptr
;
3798 /* Has this symbol already been allocated? If so, our work is done. */
3799 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3804 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3807 /* Allocate space for a pointer in the linker section, and allocate
3808 a new pointer record from internal memory. */
3809 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3810 amt
= sizeof (elf_linker_section_pointers_t
);
3811 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3813 if (!linker_section_ptr
)
3816 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3817 linker_section_ptr
->addend
= rel
->r_addend
;
3818 linker_section_ptr
->lsect
= lsect
;
3819 *ptr_linker_section_ptr
= linker_section_ptr
;
3821 if (!bfd_set_section_alignment (lsect
->section
->owner
, lsect
->section
, 2))
3823 linker_section_ptr
->offset
= lsect
->section
->size
;
3824 lsect
->section
->size
+= 4;
3828 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3829 lsect
->name
, (long) linker_section_ptr
->offset
,
3830 (long) lsect
->section
->size
);
3836 static struct plt_entry
**
3837 update_local_sym_info (bfd
*abfd
,
3838 Elf_Internal_Shdr
*symtab_hdr
,
3839 unsigned long r_symndx
,
3842 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3843 struct plt_entry
**local_plt
;
3844 char *local_got_tls_masks
;
3846 if (local_got_refcounts
== NULL
)
3848 bfd_size_type size
= symtab_hdr
->sh_info
;
3850 size
*= (sizeof (*local_got_refcounts
)
3851 + sizeof (*local_plt
)
3852 + sizeof (*local_got_tls_masks
));
3853 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3854 if (local_got_refcounts
== NULL
)
3856 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3859 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3860 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3861 local_got_tls_masks
[r_symndx
] |= tls_type
;
3862 if (tls_type
!= PLT_IFUNC
)
3863 local_got_refcounts
[r_symndx
] += 1;
3864 return local_plt
+ r_symndx
;
3868 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3869 asection
*sec
, bfd_vma addend
)
3871 struct plt_entry
*ent
;
3875 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3876 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3880 bfd_size_type amt
= sizeof (*ent
);
3881 ent
= bfd_alloc (abfd
, amt
);
3886 ent
->addend
= addend
;
3887 ent
->plt
.refcount
= 0;
3890 ent
->plt
.refcount
+= 1;
3894 static struct plt_entry
*
3895 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3897 struct plt_entry
*ent
;
3901 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3902 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3908 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3910 return (r_type
== R_PPC_PLTREL24
3911 || r_type
== R_PPC_LOCAL24PC
3912 || r_type
== R_PPC_REL24
3913 || r_type
== R_PPC_REL14
3914 || r_type
== R_PPC_REL14_BRTAKEN
3915 || r_type
== R_PPC_REL14_BRNTAKEN
3916 || r_type
== R_PPC_ADDR24
3917 || r_type
== R_PPC_ADDR14
3918 || r_type
== R_PPC_ADDR14_BRTAKEN
3919 || r_type
== R_PPC_ADDR14_BRNTAKEN
3920 || r_type
== R_PPC_VLE_REL24
);
3924 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3927 /* xgettext:c-format */
3928 (_("%pB: relocation %s cannot be used when making a shared object"),
3930 ppc_elf_howto_table
[r_type
]->name
);
3931 bfd_set_error (bfd_error_bad_value
);
3934 /* Look through the relocs for a section during the first phase, and
3935 allocate space in the global offset table or procedure linkage
3939 ppc_elf_check_relocs (bfd
*abfd
,
3940 struct bfd_link_info
*info
,
3942 const Elf_Internal_Rela
*relocs
)
3944 struct ppc_elf_link_hash_table
*htab
;
3945 Elf_Internal_Shdr
*symtab_hdr
;
3946 struct elf_link_hash_entry
**sym_hashes
;
3947 const Elf_Internal_Rela
*rel
;
3948 const Elf_Internal_Rela
*rel_end
;
3949 asection
*got2
, *sreloc
;
3950 struct elf_link_hash_entry
*tga
;
3952 if (bfd_link_relocatable (info
))
3955 /* Don't do anything special with non-loaded, non-alloced sections.
3956 In particular, any relocs in such sections should not affect GOT
3957 and PLT reference counting (ie. we don't allow them to create GOT
3958 or PLT entries), there's no possibility or desire to optimize TLS
3959 relocs, and there's not much point in propagating relocs to shared
3960 libs that the dynamic linker won't relocate. */
3961 if ((sec
->flags
& SEC_ALLOC
) == 0)
3965 _bfd_error_handler ("ppc_elf_check_relocs called for section %pA in %pB",
3969 BFD_ASSERT (is_ppc_elf (abfd
));
3971 /* Initialize howto table if not already done. */
3972 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3973 ppc_elf_howto_init ();
3975 htab
= ppc_elf_hash_table (info
);
3976 if (htab
->glink
== NULL
)
3978 if (htab
->elf
.dynobj
== NULL
)
3979 htab
->elf
.dynobj
= abfd
;
3980 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
3983 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
3984 FALSE
, FALSE
, TRUE
);
3985 symtab_hdr
= &elf_symtab_hdr (abfd
);
3986 sym_hashes
= elf_sym_hashes (abfd
);
3987 got2
= bfd_get_section_by_name (abfd
, ".got2");
3990 rel_end
= relocs
+ sec
->reloc_count
;
3991 for (rel
= relocs
; rel
< rel_end
; rel
++)
3993 unsigned long r_symndx
;
3994 enum elf_ppc_reloc_type r_type
;
3995 struct elf_link_hash_entry
*h
;
3997 struct plt_entry
**ifunc
;
3999 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4000 if (r_symndx
< symtab_hdr
->sh_info
)
4004 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4005 while (h
->root
.type
== bfd_link_hash_indirect
4006 || h
->root
.type
== bfd_link_hash_warning
)
4007 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4010 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4011 This shows up in particular in an R_PPC_ADDR32 in the eabi
4014 && htab
->elf
.sgot
== NULL
4015 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
4017 if (htab
->elf
.dynobj
== NULL
)
4018 htab
->elf
.dynobj
= abfd
;
4019 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4021 BFD_ASSERT (h
== htab
->elf
.hgot
);
4025 r_type
= ELF32_R_TYPE (rel
->r_info
);
4027 if (h
== NULL
&& !htab
->is_vxworks
)
4029 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4034 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4036 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4037 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4042 /* STT_GNU_IFUNC symbols must have a PLT entry;
4043 In a non-pie executable even when there are
4045 if (!bfd_link_pic (info
)
4046 || is_branch_reloc (r_type
))
4049 if (r_type
== R_PPC_PLTREL24
)
4051 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4052 if (bfd_link_pic (info
))
4053 addend
= rel
->r_addend
;
4055 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
4061 if (!htab
->is_vxworks
4062 && is_branch_reloc (r_type
)
4067 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
4068 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
4069 /* We have a new-style __tls_get_addr call with a marker
4073 /* Mark this section as having an old-style call. */
4074 sec
->has_tls_get_addr_call
= 1;
4081 /* These special tls relocs tie a call to __tls_get_addr with
4082 its parameter symbol. */
4085 case R_PPC_GOT_TLSLD16
:
4086 case R_PPC_GOT_TLSLD16_LO
:
4087 case R_PPC_GOT_TLSLD16_HI
:
4088 case R_PPC_GOT_TLSLD16_HA
:
4089 tls_type
= TLS_TLS
| TLS_LD
;
4092 case R_PPC_GOT_TLSGD16
:
4093 case R_PPC_GOT_TLSGD16_LO
:
4094 case R_PPC_GOT_TLSGD16_HI
:
4095 case R_PPC_GOT_TLSGD16_HA
:
4096 tls_type
= TLS_TLS
| TLS_GD
;
4099 case R_PPC_GOT_TPREL16
:
4100 case R_PPC_GOT_TPREL16_LO
:
4101 case R_PPC_GOT_TPREL16_HI
:
4102 case R_PPC_GOT_TPREL16_HA
:
4103 if (bfd_link_dll (info
))
4104 info
->flags
|= DF_STATIC_TLS
;
4105 tls_type
= TLS_TLS
| TLS_TPREL
;
4108 case R_PPC_GOT_DTPREL16
:
4109 case R_PPC_GOT_DTPREL16_LO
:
4110 case R_PPC_GOT_DTPREL16_HI
:
4111 case R_PPC_GOT_DTPREL16_HA
:
4112 tls_type
= TLS_TLS
| TLS_DTPREL
;
4114 sec
->has_tls_reloc
= 1;
4117 /* GOT16 relocations */
4119 case R_PPC_GOT16_LO
:
4120 case R_PPC_GOT16_HI
:
4121 case R_PPC_GOT16_HA
:
4122 /* This symbol requires a global offset table entry. */
4123 if (htab
->elf
.sgot
== NULL
)
4125 if (htab
->elf
.dynobj
== NULL
)
4126 htab
->elf
.dynobj
= abfd
;
4127 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4132 h
->got
.refcount
+= 1;
4133 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4136 /* This is a global offset table entry for a local symbol. */
4137 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4140 /* We may also need a plt entry if the symbol turns out to be
4142 if (h
!= NULL
&& !bfd_link_pic (info
))
4144 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4149 /* Indirect .sdata relocation. */
4150 case R_PPC_EMB_SDAI16
:
4151 if (bfd_link_pic (info
))
4153 bad_shared_reloc (abfd
, r_type
);
4156 htab
->sdata
[0].sym
->ref_regular
= 1;
4157 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[0],
4162 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4163 h
->non_got_ref
= TRUE
;
4167 /* Indirect .sdata2 relocation. */
4168 case R_PPC_EMB_SDA2I16
:
4169 if (bfd_link_pic (info
))
4171 bad_shared_reloc (abfd
, r_type
);
4174 htab
->sdata
[1].sym
->ref_regular
= 1;
4175 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[1],
4180 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4181 h
->non_got_ref
= TRUE
;
4185 case R_PPC_SDAREL16
:
4186 htab
->sdata
[0].sym
->ref_regular
= 1;
4189 case R_PPC_VLE_SDAREL_LO16A
:
4190 case R_PPC_VLE_SDAREL_LO16D
:
4191 case R_PPC_VLE_SDAREL_HI16A
:
4192 case R_PPC_VLE_SDAREL_HI16D
:
4193 case R_PPC_VLE_SDAREL_HA16A
:
4194 case R_PPC_VLE_SDAREL_HA16D
:
4197 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4198 h
->non_got_ref
= TRUE
;
4202 case R_PPC_VLE_REL8
:
4203 case R_PPC_VLE_REL15
:
4204 case R_PPC_VLE_REL24
:
4205 case R_PPC_VLE_LO16A
:
4206 case R_PPC_VLE_LO16D
:
4207 case R_PPC_VLE_HI16A
:
4208 case R_PPC_VLE_HI16D
:
4209 case R_PPC_VLE_HA16A
:
4210 case R_PPC_VLE_HA16D
:
4211 case R_PPC_VLE_ADDR20
:
4214 case R_PPC_EMB_SDA2REL
:
4215 if (bfd_link_pic (info
))
4217 bad_shared_reloc (abfd
, r_type
);
4220 htab
->sdata
[1].sym
->ref_regular
= 1;
4223 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4224 h
->non_got_ref
= TRUE
;
4228 case R_PPC_VLE_SDA21_LO
:
4229 case R_PPC_VLE_SDA21
:
4230 case R_PPC_EMB_SDA21
:
4231 case R_PPC_EMB_RELSDA
:
4232 if (bfd_link_pic (info
))
4234 bad_shared_reloc (abfd
, r_type
);
4239 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4240 h
->non_got_ref
= TRUE
;
4244 case R_PPC_EMB_NADDR32
:
4245 case R_PPC_EMB_NADDR16
:
4246 case R_PPC_EMB_NADDR16_LO
:
4247 case R_PPC_EMB_NADDR16_HI
:
4248 case R_PPC_EMB_NADDR16_HA
:
4249 if (bfd_link_pic (info
))
4251 bad_shared_reloc (abfd
, r_type
);
4255 h
->non_got_ref
= TRUE
;
4258 case R_PPC_PLTREL24
:
4263 case R_PPC_PLTREL32
:
4264 case R_PPC_PLT16_LO
:
4265 case R_PPC_PLT16_HI
:
4266 case R_PPC_PLT16_HA
:
4268 fprintf (stderr
, "Reloc requires a PLT entry\n");
4270 /* This symbol requires a procedure linkage table entry. */
4275 /* It does not make sense to have a procedure linkage
4276 table entry for a non-ifunc local symbol. */
4277 info
->callbacks
->einfo
4278 /* xgettext:c-format */
4279 (_("%H: %s reloc against local symbol\n"),
4280 abfd
, sec
, rel
->r_offset
,
4281 ppc_elf_howto_table
[r_type
]->name
);
4282 bfd_set_error (bfd_error_bad_value
);
4290 if (r_type
== R_PPC_PLTREL24
)
4292 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4293 if (bfd_link_pic (info
))
4294 addend
= rel
->r_addend
;
4297 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4302 /* The following relocations don't need to propagate the
4303 relocation if linking a shared object since they are
4304 section relative. */
4306 case R_PPC_SECTOFF_LO
:
4307 case R_PPC_SECTOFF_HI
:
4308 case R_PPC_SECTOFF_HA
:
4309 case R_PPC_DTPREL16
:
4310 case R_PPC_DTPREL16_LO
:
4311 case R_PPC_DTPREL16_HI
:
4312 case R_PPC_DTPREL16_HA
:
4317 case R_PPC_REL16_LO
:
4318 case R_PPC_REL16_HI
:
4319 case R_PPC_REL16_HA
:
4320 case R_PPC_REL16DX_HA
:
4321 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4324 /* These are just markers. */
4326 case R_PPC_EMB_MRKREF
:
4330 case R_PPC_RELAX_PLT
:
4331 case R_PPC_RELAX_PLTREL24
:
4335 /* These should only appear in dynamic objects. */
4337 case R_PPC_GLOB_DAT
:
4338 case R_PPC_JMP_SLOT
:
4339 case R_PPC_RELATIVE
:
4340 case R_PPC_IRELATIVE
:
4343 /* These aren't handled yet. We'll report an error later. */
4345 case R_PPC_EMB_RELSEC16
:
4346 case R_PPC_EMB_RELST_LO
:
4347 case R_PPC_EMB_RELST_HI
:
4348 case R_PPC_EMB_RELST_HA
:
4349 case R_PPC_EMB_BIT_FLD
:
4352 /* This refers only to functions defined in the shared library. */
4353 case R_PPC_LOCAL24PC
:
4354 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4356 htab
->plt_type
= PLT_OLD
;
4357 htab
->old_bfd
= abfd
;
4359 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4362 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4367 /* This relocation describes the C++ object vtable hierarchy.
4368 Reconstruct it for later use during GC. */
4369 case R_PPC_GNU_VTINHERIT
:
4370 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4374 /* This relocation describes which C++ vtable entries are actually
4375 used. Record for later use during GC. */
4376 case R_PPC_GNU_VTENTRY
:
4377 BFD_ASSERT (h
!= NULL
);
4379 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4383 /* We shouldn't really be seeing TPREL32. */
4386 case R_PPC_TPREL16_LO
:
4387 case R_PPC_TPREL16_HI
:
4388 case R_PPC_TPREL16_HA
:
4389 if (bfd_link_dll (info
))
4390 info
->flags
|= DF_STATIC_TLS
;
4394 case R_PPC_DTPMOD32
:
4395 case R_PPC_DTPREL32
:
4401 && (sec
->flags
& SEC_CODE
) != 0
4402 && bfd_link_pic (info
)
4403 && htab
->plt_type
== PLT_UNSET
)
4405 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4406 the start of a function, which assembles to a REL32
4407 reference to .got2. If we detect one of these, then
4408 force the old PLT layout because the linker cannot
4409 reliably deduce the GOT pointer value needed for
4412 Elf_Internal_Sym
*isym
;
4414 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4419 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4422 htab
->plt_type
= PLT_OLD
;
4423 htab
->old_bfd
= abfd
;
4426 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4432 case R_PPC_ADDR16_LO
:
4433 case R_PPC_ADDR16_HI
:
4434 case R_PPC_ADDR16_HA
:
4437 if (h
!= NULL
&& !bfd_link_pic (info
))
4439 /* We may need a plt entry if the symbol turns out to be
4440 a function defined in a dynamic object. */
4441 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4444 /* We may need a copy reloc too. */
4446 h
->pointer_equality_needed
= 1;
4447 if (r_type
== R_PPC_ADDR16_HA
)
4448 ppc_elf_hash_entry (h
)->has_addr16_ha
= 1;
4449 if (r_type
== R_PPC_ADDR16_LO
)
4450 ppc_elf_hash_entry (h
)->has_addr16_lo
= 1;
4456 case R_PPC_REL14_BRTAKEN
:
4457 case R_PPC_REL14_BRNTAKEN
:
4460 if (h
== htab
->elf
.hgot
)
4462 if (htab
->plt_type
== PLT_UNSET
)
4464 htab
->plt_type
= PLT_OLD
;
4465 htab
->old_bfd
= abfd
;
4473 case R_PPC_ADDR14_BRTAKEN
:
4474 case R_PPC_ADDR14_BRNTAKEN
:
4475 if (h
!= NULL
&& !bfd_link_pic (info
))
4477 /* We may need a plt entry if the symbol turns out to be
4478 a function defined in a dynamic object. */
4480 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4486 /* If we are creating a shared library, and this is a reloc
4487 against a global symbol, or a non PC relative reloc
4488 against a local symbol, then we need to copy the reloc
4489 into the shared library. However, if we are linking with
4490 -Bsymbolic, we do not need to copy a reloc against a
4491 global symbol which is defined in an object we are
4492 including in the link (i.e., DEF_REGULAR is set). At
4493 this point we have not seen all the input files, so it is
4494 possible that DEF_REGULAR is not set now but will be set
4495 later (it is never cleared). In case of a weak definition,
4496 DEF_REGULAR may be cleared later by a strong definition in
4497 a shared library. We account for that possibility below by
4498 storing information in the dyn_relocs field of the hash
4499 table entry. A similar situation occurs when creating
4500 shared libraries and symbol visibility changes render the
4503 If on the other hand, we are creating an executable, we
4504 may need to keep relocations for symbols satisfied by a
4505 dynamic library if we manage to avoid copy relocs for the
4507 if ((bfd_link_pic (info
)
4508 && (must_be_dyn_reloc (info
, r_type
)
4510 && (!SYMBOLIC_BIND (info
, h
)
4511 || h
->root
.type
== bfd_link_hash_defweak
4512 || !h
->def_regular
))))
4513 || (ELIMINATE_COPY_RELOCS
4514 && !bfd_link_pic (info
)
4516 && (h
->root
.type
== bfd_link_hash_defweak
4517 || !h
->def_regular
)))
4521 "ppc_elf_check_relocs needs to "
4522 "create relocation for %s\n",
4523 (h
&& h
->root
.root
.string
4524 ? h
->root
.root
.string
: "<unknown>"));
4528 if (htab
->elf
.dynobj
== NULL
)
4529 htab
->elf
.dynobj
= abfd
;
4531 sreloc
= _bfd_elf_make_dynamic_reloc_section
4532 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4538 /* If this is a global symbol, we count the number of
4539 relocations we need for this symbol. */
4542 struct elf_dyn_relocs
*p
;
4543 struct elf_dyn_relocs
**rel_head
;
4545 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4547 if (p
== NULL
|| p
->sec
!= sec
)
4549 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4552 p
->next
= *rel_head
;
4559 if (!must_be_dyn_reloc (info
, r_type
))
4564 /* Track dynamic relocs needed for local syms too.
4565 We really need local syms available to do this
4567 struct ppc_dyn_relocs
*p
;
4568 struct ppc_dyn_relocs
**rel_head
;
4569 bfd_boolean is_ifunc
;
4572 Elf_Internal_Sym
*isym
;
4574 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4579 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4583 vpp
= &elf_section_data (s
)->local_dynrel
;
4584 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4585 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4587 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4589 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4591 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4594 p
->next
= *rel_head
;
4597 p
->ifunc
= is_ifunc
;
4611 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4612 and OBFD, and merge non-conflicting ones. */
4614 _bfd_elf_ppc_merge_fp_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4616 bfd
*obfd
= info
->output_bfd
;
4617 obj_attribute
*in_attr
, *in_attrs
;
4618 obj_attribute
*out_attr
, *out_attrs
;
4620 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4621 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4623 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4624 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4626 if (in_attr
->i
!= out_attr
->i
)
4628 int in_fp
= in_attr
->i
& 3;
4629 int out_fp
= out_attr
->i
& 3;
4633 else if (out_fp
== 0)
4636 out_attr
->i
^= in_fp
;
4638 else if (out_fp
!= 2 && in_fp
== 2)
4640 /* xgettext:c-format */
4641 (_("Warning: %pB uses hard float, %pB uses soft float"), obfd
, ibfd
);
4642 else if (out_fp
== 2 && in_fp
!= 2)
4644 /* xgettext:c-format */
4645 (_("Warning: %pB uses hard float, %pB uses soft float"), ibfd
, obfd
);
4646 else if (out_fp
== 1 && in_fp
== 3)
4648 /* xgettext:c-format */
4649 (_("Warning: %pB uses double-precision hard float, "
4650 "%pB uses single-precision hard float"), obfd
, ibfd
);
4651 else if (out_fp
== 3 && in_fp
== 1)
4653 /* xgettext:c-format */
4654 (_("Warning: %pB uses double-precision hard float, "
4655 "%pB uses single-precision hard float"), ibfd
, obfd
);
4657 in_fp
= in_attr
->i
& 0xc;
4658 out_fp
= out_attr
->i
& 0xc;
4661 else if (out_fp
== 0)
4664 out_attr
->i
^= in_fp
;
4666 else if (out_fp
!= 2 * 4 && in_fp
== 2 * 4)
4668 /* xgettext:c-format */
4669 (_("Warning: %pB uses 64-bit long double, "
4670 "%pB uses 128-bit long double"), ibfd
, obfd
);
4671 else if (in_fp
!= 2 * 4 && out_fp
== 2 * 4)
4673 /* xgettext:c-format */
4674 (_("Warning: %pB uses 64-bit long double, "
4675 "%pB uses 128-bit long double"), obfd
, ibfd
);
4676 else if (out_fp
== 1 * 4 && in_fp
== 3 * 4)
4678 /* xgettext:c-format */
4679 (_("Warning: %pB uses IBM long double, "
4680 "%pB uses IEEE long double"), ibfd
, obfd
);
4681 else if (out_fp
== 3 * 4 && in_fp
== 1 * 4)
4683 /* xgettext:c-format */
4684 (_("Warning: %pB uses IBM long double, "
4685 "%pB uses IEEE long double"), obfd
, ibfd
);
4689 /* Merge object attributes from IBFD into OBFD. Warn if
4690 there are conflicting attributes. */
4692 ppc_elf_merge_obj_attributes (bfd
*ibfd
, struct bfd_link_info
*info
)
4695 obj_attribute
*in_attr
, *in_attrs
;
4696 obj_attribute
*out_attr
, *out_attrs
;
4698 _bfd_elf_ppc_merge_fp_attributes (ibfd
, info
);
4700 obfd
= info
->output_bfd
;
4701 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4702 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4704 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4705 merge non-conflicting ones. */
4706 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4707 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4708 if (in_attr
->i
!= out_attr
->i
)
4710 int in_vec
= in_attr
->i
& 3;
4711 int out_vec
= out_attr
->i
& 3;
4715 else if (out_vec
== 0)
4718 out_attr
->i
= in_vec
;
4720 /* For now, allow generic to transition to AltiVec or SPE
4721 without a warning. If GCC marked files with their stack
4722 alignment and used don't-care markings for files which are
4723 not affected by the vector ABI, we could warn about this
4725 else if (in_vec
== 1)
4727 else if (out_vec
== 1)
4730 out_attr
->i
= in_vec
;
4732 else if (out_vec
< in_vec
)
4734 /* xgettext:c-format */
4735 (_("Warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4737 else if (out_vec
> in_vec
)
4739 /* xgettext:c-format */
4740 (_("Warning: %pB uses AltiVec vector ABI, %pB uses SPE vector ABI"),
4744 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4745 and merge non-conflicting ones. */
4746 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4747 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4748 if (in_attr
->i
!= out_attr
->i
)
4750 int in_struct
= in_attr
->i
& 3;
4751 int out_struct
= out_attr
->i
& 3;
4753 if (in_struct
== 0 || in_struct
== 3)
4755 else if (out_struct
== 0)
4758 out_attr
->i
= in_struct
;
4760 else if (out_struct
< in_struct
)
4762 /* xgettext:c-format */
4763 (_("Warning: %pB uses r3/r4 for small structure returns, "
4764 "%pB uses memory"), obfd
, ibfd
);
4765 else if (out_struct
> in_struct
)
4767 /* xgettext:c-format */
4768 (_("Warning: %pB uses r3/r4 for small structure returns, "
4769 "%pB uses memory"), ibfd
, obfd
);
4772 /* Merge Tag_compatibility attributes and any common GNU ones. */
4773 _bfd_elf_merge_object_attributes (ibfd
, info
);
4778 /* Merge backend specific data from an object file to the output
4779 object file when linking. */
4782 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4784 bfd
*obfd
= info
->output_bfd
;
4789 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4792 /* Check if we have the same endianness. */
4793 if (! _bfd_generic_verify_endian_match (ibfd
, info
))
4796 if (!ppc_elf_merge_obj_attributes (ibfd
, info
))
4799 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4800 old_flags
= elf_elfheader (obfd
)->e_flags
;
4801 if (!elf_flags_init (obfd
))
4803 /* First call, no flags set. */
4804 elf_flags_init (obfd
) = TRUE
;
4805 elf_elfheader (obfd
)->e_flags
= new_flags
;
4808 /* Compatible flags are ok. */
4809 else if (new_flags
== old_flags
)
4812 /* Incompatible flags. */
4815 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4816 to be linked with either. */
4818 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4819 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4823 (_("%pB: compiled with -mrelocatable and linked with "
4824 "modules compiled normally"), ibfd
);
4826 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4827 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4831 (_("%pB: compiled normally and linked with "
4832 "modules compiled with -mrelocatable"), ibfd
);
4835 /* The output is -mrelocatable-lib iff both the input files are. */
4836 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4837 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4839 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4840 but each input file is either -mrelocatable or -mrelocatable-lib. */
4841 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4842 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4843 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4844 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4846 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4847 any module uses it. */
4848 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4850 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4851 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4853 /* Warn about any other mismatches. */
4854 if (new_flags
!= old_flags
)
4858 /* xgettext:c-format */
4859 (_("%pB: uses different e_flags (%#x) fields "
4860 "than previous modules (%#x)"),
4861 ibfd
, new_flags
, old_flags
);
4866 bfd_set_error (bfd_error_bad_value
);
4875 ppc_elf_vle_split16 (bfd
*input_bfd
,
4876 asection
*input_section
,
4877 unsigned long offset
,
4880 split16_format_type split16_format
,
4883 unsigned int insn
, opcode
, top5
;
4885 insn
= bfd_get_32 (input_bfd
, loc
);
4886 opcode
= insn
& 0xfc00f800;
4887 if (opcode
== E_OR2I_INSN
4888 || opcode
== E_AND2I_DOT_INSN
4889 || opcode
== E_OR2IS_INSN
4890 || opcode
== E_LIS_INSN
4891 || opcode
== E_AND2IS_DOT_INSN
)
4893 if (split16_format
!= split16a_type
)
4896 split16_format
= split16a_type
;
4899 /* xgettext:c-format */
4900 (_("%pB(%pA+0x%lx): expected 16A style relocation on 0x%08x insn"),
4901 input_bfd
, input_section
, offset
, opcode
);
4904 else if (opcode
== E_ADD2I_DOT_INSN
4905 || opcode
== E_ADD2IS_INSN
4906 || opcode
== E_CMP16I_INSN
4907 || opcode
== E_MULL2I_INSN
4908 || opcode
== E_CMPL16I_INSN
4909 || opcode
== E_CMPH16I_INSN
4910 || opcode
== E_CMPHL16I_INSN
)
4912 if (split16_format
!= split16d_type
)
4915 split16_format
= split16d_type
;
4918 /* xgettext:c-format */
4919 (_("%pB(%pA+0x%lx): expected 16D style relocation on 0x%08x insn"),
4920 input_bfd
, input_section
, offset
, opcode
);
4923 top5
= value
& 0xf800;
4924 top5
= top5
<< (split16_format
== split16a_type
? 5 : 10);
4925 insn
&= (split16_format
== split16a_type
? ~0x1f07ff : ~0x3e007ff);
4927 insn
|= value
& 0x7ff;
4928 bfd_put_32 (input_bfd
, insn
, loc
);
4932 ppc_elf_vle_split20 (bfd
*output_bfd
, bfd_byte
*loc
, bfd_vma value
)
4936 insn
= bfd_get_32 (output_bfd
, loc
);
4937 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4938 /* Top 4 bits of value to 17..20. */
4939 insn
|= (value
& 0xf0000) >> 5;
4940 /* Next 5 bits of the value to 11..15. */
4941 insn
|= (value
& 0xf800) << 5;
4942 /* And the final 11 bits of the value to bits 21 to 31. */
4943 insn
|= value
& 0x7ff;
4944 bfd_put_32 (output_bfd
, insn
, loc
);
4948 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4949 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4951 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4952 struct bfd_link_info
*info
)
4954 struct ppc_elf_link_hash_table
*htab
;
4957 htab
= ppc_elf_hash_table (info
);
4959 if (htab
->plt_type
== PLT_UNSET
)
4961 struct elf_link_hash_entry
*h
;
4963 if (htab
->params
->plt_style
== PLT_OLD
)
4964 htab
->plt_type
= PLT_OLD
;
4965 else if (bfd_link_pic (info
)
4966 && htab
->elf
.dynamic_sections_created
4967 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
4968 FALSE
, FALSE
, TRUE
)) != NULL
4969 && (h
->type
== STT_FUNC
4972 && !(SYMBOL_CALLS_LOCAL (info
, h
)
4973 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
4975 /* Profiling of shared libs (and pies) is not supported with
4976 secure plt, because ppc32 does profiling before a
4977 function prologue and a secure plt pic call stubs needs
4978 r30 to be set up. */
4979 htab
->plt_type
= PLT_OLD
;
4984 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
4986 /* Look through the reloc flags left by ppc_elf_check_relocs.
4987 Use the old style bss plt if a file makes plt calls
4988 without using the new relocs, and if ld isn't given
4989 --secure-plt and we never see REL16 relocs. */
4990 if (plt_type
== PLT_UNSET
)
4992 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
4993 if (is_ppc_elf (ibfd
))
4995 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4997 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
5000 htab
->old_bfd
= ibfd
;
5004 htab
->plt_type
= plt_type
;
5007 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
5009 if (htab
->old_bfd
!= NULL
)
5010 info
->callbacks
->einfo (_("%P: bss-plt forced due to %pB\n"),
5013 info
->callbacks
->einfo (_("%P: bss-plt forced by profiling\n"));
5016 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
5018 if (htab
->plt_type
== PLT_NEW
)
5020 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
5021 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
5023 /* The new PLT is a loaded section. */
5024 if (htab
->elf
.splt
!= NULL
5025 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->elf
.splt
, flags
))
5028 /* The new GOT is not executable. */
5029 if (htab
->elf
.sgot
!= NULL
5030 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->elf
.sgot
, flags
))
5035 /* Stop an unused .glink section from affecting .text alignment. */
5036 if (htab
->glink
!= NULL
5037 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
5040 return htab
->plt_type
== PLT_NEW
;
5043 /* Return the section that should be marked against GC for a given
5047 ppc_elf_gc_mark_hook (asection
*sec
,
5048 struct bfd_link_info
*info
,
5049 Elf_Internal_Rela
*rel
,
5050 struct elf_link_hash_entry
*h
,
5051 Elf_Internal_Sym
*sym
)
5054 switch (ELF32_R_TYPE (rel
->r_info
))
5056 case R_PPC_GNU_VTINHERIT
:
5057 case R_PPC_GNU_VTENTRY
:
5061 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5064 /* Set plt output section type, htab->tls_get_addr, and call the
5065 generic ELF tls_setup function. */
5068 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5070 struct ppc_elf_link_hash_table
*htab
;
5072 htab
= ppc_elf_hash_table (info
);
5073 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5074 FALSE
, FALSE
, TRUE
);
5075 if (htab
->plt_type
!= PLT_NEW
)
5076 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5078 if (!htab
->params
->no_tls_get_addr_opt
)
5080 struct elf_link_hash_entry
*opt
, *tga
;
5081 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5082 FALSE
, FALSE
, TRUE
);
5084 && (opt
->root
.type
== bfd_link_hash_defined
5085 || opt
->root
.type
== bfd_link_hash_defweak
))
5087 /* If glibc supports an optimized __tls_get_addr call stub,
5088 signalled by the presence of __tls_get_addr_opt, and we'll
5089 be calling __tls_get_addr via a plt call stub, then
5090 make __tls_get_addr point to __tls_get_addr_opt. */
5091 tga
= htab
->tls_get_addr
;
5092 if (htab
->elf
.dynamic_sections_created
5094 && (tga
->type
== STT_FUNC
5096 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5097 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, tga
)))
5099 struct plt_entry
*ent
;
5100 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5101 if (ent
->plt
.refcount
> 0)
5105 tga
->root
.type
= bfd_link_hash_indirect
;
5106 tga
->root
.u
.i
.link
= &opt
->root
;
5107 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5109 if (opt
->dynindx
!= -1)
5111 /* Use __tls_get_addr_opt in dynamic relocations. */
5113 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5115 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5118 htab
->tls_get_addr
= opt
;
5123 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5125 if (htab
->plt_type
== PLT_NEW
5126 && htab
->elf
.splt
!= NULL
5127 && htab
->elf
.splt
->output_section
!= NULL
)
5129 elf_section_type (htab
->elf
.splt
->output_section
) = SHT_PROGBITS
;
5130 elf_section_flags (htab
->elf
.splt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5133 return _bfd_elf_tls_setup (obfd
, info
);
5136 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5140 branch_reloc_hash_match (const bfd
*ibfd
,
5141 const Elf_Internal_Rela
*rel
,
5142 const struct elf_link_hash_entry
*hash
)
5144 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5145 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5146 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5148 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5150 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5151 struct elf_link_hash_entry
*h
;
5153 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5154 while (h
->root
.type
== bfd_link_hash_indirect
5155 || h
->root
.type
== bfd_link_hash_warning
)
5156 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5163 /* Run through all the TLS relocs looking for optimization
5167 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5168 struct bfd_link_info
*info
)
5172 struct ppc_elf_link_hash_table
*htab
;
5175 if (!bfd_link_executable (info
))
5178 htab
= ppc_elf_hash_table (info
);
5182 /* Make two passes through the relocs. First time check that tls
5183 relocs involved in setting up a tls_get_addr call are indeed
5184 followed by such a call. If they are not, don't do any tls
5185 optimization. On the second pass twiddle tls_mask flags to
5186 notify relocate_section that optimization can be done, and
5187 adjust got and plt refcounts. */
5188 for (pass
= 0; pass
< 2; ++pass
)
5189 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
5191 Elf_Internal_Sym
*locsyms
= NULL
;
5192 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5193 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5195 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5196 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5198 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5199 int expecting_tls_get_addr
= 0;
5201 /* Read the relocations. */
5202 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5204 if (relstart
== NULL
)
5207 relend
= relstart
+ sec
->reloc_count
;
5208 for (rel
= relstart
; rel
< relend
; rel
++)
5210 enum elf_ppc_reloc_type r_type
;
5211 unsigned long r_symndx
;
5212 struct elf_link_hash_entry
*h
= NULL
;
5214 char tls_set
, tls_clear
;
5215 bfd_boolean is_local
;
5216 bfd_signed_vma
*got_count
;
5218 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5219 if (r_symndx
>= symtab_hdr
->sh_info
)
5221 struct elf_link_hash_entry
**sym_hashes
;
5223 sym_hashes
= elf_sym_hashes (ibfd
);
5224 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5225 while (h
->root
.type
== bfd_link_hash_indirect
5226 || h
->root
.type
== bfd_link_hash_warning
)
5227 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5235 r_type
= ELF32_R_TYPE (rel
->r_info
);
5236 /* If this section has old-style __tls_get_addr calls
5237 without marker relocs, then check that each
5238 __tls_get_addr call reloc is preceded by a reloc
5239 that conceivably belongs to the __tls_get_addr arg
5240 setup insn. If we don't find matching arg setup
5241 relocs, don't do any tls optimization. */
5243 && sec
->has_tls_get_addr_call
5245 && h
== htab
->tls_get_addr
5246 && !expecting_tls_get_addr
5247 && is_branch_reloc (r_type
))
5249 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5250 "TLS optimization disabled\n",
5251 ibfd
, sec
, rel
->r_offset
);
5252 if (elf_section_data (sec
)->relocs
!= relstart
)
5257 expecting_tls_get_addr
= 0;
5260 case R_PPC_GOT_TLSLD16
:
5261 case R_PPC_GOT_TLSLD16_LO
:
5262 expecting_tls_get_addr
= 1;
5265 case R_PPC_GOT_TLSLD16_HI
:
5266 case R_PPC_GOT_TLSLD16_HA
:
5267 /* These relocs should never be against a symbol
5268 defined in a shared lib. Leave them alone if
5269 that turns out to be the case. */
5278 case R_PPC_GOT_TLSGD16
:
5279 case R_PPC_GOT_TLSGD16_LO
:
5280 expecting_tls_get_addr
= 1;
5283 case R_PPC_GOT_TLSGD16_HI
:
5284 case R_PPC_GOT_TLSGD16_HA
:
5290 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5294 case R_PPC_GOT_TPREL16
:
5295 case R_PPC_GOT_TPREL16_LO
:
5296 case R_PPC_GOT_TPREL16_HI
:
5297 case R_PPC_GOT_TPREL16_HA
:
5302 tls_clear
= TLS_TPREL
;
5310 expecting_tls_get_addr
= 2;
5321 if (!expecting_tls_get_addr
5322 || (expecting_tls_get_addr
== 1
5323 && !sec
->has_tls_get_addr_call
))
5326 if (rel
+ 1 < relend
5327 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5328 htab
->tls_get_addr
))
5331 /* Uh oh, we didn't find the expected call. We
5332 could just mark this symbol to exclude it
5333 from tls optimization but it's safer to skip
5334 the entire optimization. */
5335 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5336 "TLS optimization disabled\n"),
5337 ibfd
, sec
, rel
->r_offset
);
5338 if (elf_section_data (sec
)->relocs
!= relstart
)
5343 if (expecting_tls_get_addr
)
5345 struct plt_entry
*ent
;
5348 if (bfd_link_pic (info
)
5349 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5350 addend
= rel
[1].r_addend
;
5351 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5353 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5354 ent
->plt
.refcount
-= 1;
5356 if (expecting_tls_get_addr
== 2)
5362 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5363 got_count
= &h
->got
.refcount
;
5367 bfd_signed_vma
*lgot_refs
;
5368 struct plt_entry
**local_plt
;
5371 if (locsyms
== NULL
)
5373 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5374 if (locsyms
== NULL
)
5375 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5376 symtab_hdr
->sh_info
,
5377 0, NULL
, NULL
, NULL
);
5378 if (locsyms
== NULL
)
5380 if (elf_section_data (sec
)->relocs
!= relstart
)
5385 lgot_refs
= elf_local_got_refcounts (ibfd
);
5386 if (lgot_refs
== NULL
)
5388 local_plt
= (struct plt_entry
**)
5389 (lgot_refs
+ symtab_hdr
->sh_info
);
5390 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
5391 tls_mask
= &lgot_masks
[r_symndx
];
5392 got_count
= &lgot_refs
[r_symndx
];
5397 /* We managed to get rid of a got entry. */
5402 *tls_mask
|= tls_set
;
5403 *tls_mask
&= ~tls_clear
;
5406 if (elf_section_data (sec
)->relocs
!= relstart
)
5411 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
5413 if (!info
->keep_memory
)
5416 symtab_hdr
->contents
= (unsigned char *) locsyms
;
5419 htab
->do_tls_opt
= 1;
5423 /* Find dynamic relocs for H that apply to read-only sections. */
5426 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5428 struct elf_dyn_relocs
*p
;
5430 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5432 asection
*s
= p
->sec
->output_section
;
5434 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5440 /* Return true if we have dynamic relocs against H or any of its weak
5441 aliases, that apply to read-only sections. Cannot be used after
5442 size_dynamic_sections. */
5445 alias_readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5447 struct ppc_elf_link_hash_entry
*eh
= ppc_elf_hash_entry (h
);
5450 if (readonly_dynrelocs (&eh
->elf
))
5452 eh
= ppc_elf_hash_entry (eh
->elf
.u
.alias
);
5453 } while (eh
!= NULL
&& &eh
->elf
!= h
);
5458 /* Return whether H has pc-relative dynamic relocs. */
5461 pc_dynrelocs (struct elf_link_hash_entry
*h
)
5463 struct elf_dyn_relocs
*p
;
5465 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5466 if (p
->pc_count
!= 0)
5471 /* Adjust a symbol defined by a dynamic object and referenced by a
5472 regular object. The current definition is in some section of the
5473 dynamic object, but we're not including those sections. We have to
5474 change the definition to something the rest of the link can
5478 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5479 struct elf_link_hash_entry
*h
)
5481 struct ppc_elf_link_hash_table
*htab
;
5485 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5486 h
->root
.root
.string
);
5489 /* Make sure we know what is going on here. */
5490 htab
= ppc_elf_hash_table (info
);
5491 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5493 || h
->type
== STT_GNU_IFUNC
5497 && !h
->def_regular
)));
5499 /* Deal with function syms. */
5500 if (h
->type
== STT_FUNC
5501 || h
->type
== STT_GNU_IFUNC
5504 bfd_boolean local
= (SYMBOL_CALLS_LOCAL (info
, h
)
5505 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
5506 /* Discard dyn_relocs when non-pic if we've decided that a
5507 function symbol is local. */
5508 if (!bfd_link_pic (info
) && local
)
5509 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5511 /* Clear procedure linkage table information for any symbol that
5512 won't need a .plt entry. */
5513 struct plt_entry
*ent
;
5514 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5515 if (ent
->plt
.refcount
> 0)
5518 || (h
->type
!= STT_GNU_IFUNC
&& local
))
5520 /* A PLT entry is not required/allowed when:
5522 1. We are not using ld.so; because then the PLT entry
5523 can't be set up, so we can't use one. In this case,
5524 ppc_elf_adjust_dynamic_symbol won't even be called.
5526 2. GC has rendered the entry unused.
5528 3. We know for certain that a call to this symbol
5529 will go to this object, or will remain undefined. */
5530 h
->plt
.plist
= NULL
;
5532 h
->pointer_equality_needed
= 0;
5536 /* Taking a function's address in a read/write section
5537 doesn't require us to define the function symbol in the
5538 executable on a plt call stub. A dynamic reloc can
5539 be used instead, giving better runtime performance.
5540 (Calls via that function pointer don't need to bounce
5541 through the plt call stub.) Similarly, use a dynamic
5542 reloc for a weak reference when possible, allowing the
5543 resolution of the symbol to be set at load time rather
5545 if ((h
->pointer_equality_needed
5547 && !h
->ref_regular_nonweak
5548 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)))
5549 && !htab
->is_vxworks
5550 && !ppc_elf_hash_entry (h
)->has_sda_refs
5551 && !readonly_dynrelocs (h
))
5553 h
->pointer_equality_needed
= 0;
5554 /* If we haven't seen a branch reloc then we don't need
5557 h
->plt
.plist
= NULL
;
5559 else if (!bfd_link_pic (info
))
5560 /* We are going to be defining the function symbol on the
5561 plt stub, so no dyn_relocs needed when non-pic. */
5562 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5564 h
->protected_def
= 0;
5565 /* Function symbols can't have copy relocs. */
5569 h
->plt
.plist
= NULL
;
5571 /* If this is a weak symbol, and there is a real definition, the
5572 processor independent code will have arranged for us to see the
5573 real definition first, and we can just use the same value. */
5574 if (h
->is_weakalias
)
5576 struct elf_link_hash_entry
*def
= weakdef (h
);
5577 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
5578 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
5579 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
5580 if (def
->root
.u
.def
.section
== htab
->elf
.sdynbss
5581 || def
->root
.u
.def
.section
== htab
->elf
.sdynrelro
5582 || def
->root
.u
.def
.section
== htab
->dynsbss
)
5583 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5587 /* This is a reference to a symbol defined by a dynamic object which
5588 is not a function. */
5590 /* If we are creating a shared library, we must presume that the
5591 only references to the symbol are via the global offset table.
5592 For such cases we need not do anything here; the relocations will
5593 be handled correctly by relocate_section. */
5594 if (bfd_link_pic (info
))
5596 h
->protected_def
= 0;
5600 /* If there are no references to this symbol that do not use the
5601 GOT, we don't need to generate a copy reloc. */
5602 if (!h
->non_got_ref
)
5604 h
->protected_def
= 0;
5608 /* Protected variables do not work with .dynbss. The copy in
5609 .dynbss won't be used by the shared library with the protected
5610 definition for the variable. Editing to PIC, or text relocations
5611 are preferable to an incorrect program. */
5612 if (h
->protected_def
)
5614 if (ELIMINATE_COPY_RELOCS
5615 && ppc_elf_hash_entry (h
)->has_addr16_ha
5616 && ppc_elf_hash_entry (h
)->has_addr16_lo
5617 && htab
->params
->pic_fixup
== 0
5618 && info
->disable_target_specific_optimizations
<= 1)
5619 htab
->params
->pic_fixup
= 1;
5623 /* If -z nocopyreloc was given, we won't generate them either. */
5624 if (info
->nocopyreloc
)
5627 /* If we don't find any dynamic relocs in read-only sections, then
5628 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5629 We can't do this if there are any small data relocations. This
5630 doesn't work on VxWorks, where we can not have dynamic
5631 relocations (other than copy and jump slot relocations) in an
5633 if (ELIMINATE_COPY_RELOCS
5634 && !ppc_elf_hash_entry (h
)->has_sda_refs
5635 && !htab
->is_vxworks
5637 && !alias_readonly_dynrelocs (h
))
5640 /* We must allocate the symbol in our .dynbss section, which will
5641 become part of the .bss section of the executable. There will be
5642 an entry for this symbol in the .dynsym section. The dynamic
5643 object will contain position independent code, so all references
5644 from the dynamic object to this symbol will go through the global
5645 offset table. The dynamic linker will use the .dynsym entry to
5646 determine the address it must put in the global offset table, so
5647 both the dynamic object and the regular object will refer to the
5648 same memory location for the variable.
5650 Of course, if the symbol is referenced using SDAREL relocs, we
5651 must instead allocate it in .sbss. */
5652 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5654 else if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
5655 s
= htab
->elf
.sdynrelro
;
5657 s
= htab
->elf
.sdynbss
;
5658 BFD_ASSERT (s
!= NULL
);
5660 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5664 /* We must generate a R_PPC_COPY reloc to tell the dynamic
5665 linker to copy the initial value out of the dynamic object
5666 and into the runtime process image. */
5667 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5668 srel
= htab
->relsbss
;
5669 else if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
5670 srel
= htab
->elf
.sreldynrelro
;
5672 srel
= htab
->elf
.srelbss
;
5673 BFD_ASSERT (srel
!= NULL
);
5674 srel
->size
+= sizeof (Elf32_External_Rela
);
5678 /* We no longer want dyn_relocs. */
5679 ppc_elf_hash_entry (h
)->dyn_relocs
= NULL
;
5680 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
5683 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5684 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5685 specifying the addend on the plt relocation. For -fpic code, the sym
5686 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5687 xxxxxxxx.got2.plt_pic32.<callee>. */
5690 add_stub_sym (struct plt_entry
*ent
,
5691 struct elf_link_hash_entry
*h
,
5692 struct bfd_link_info
*info
)
5694 struct elf_link_hash_entry
*sh
;
5695 size_t len1
, len2
, len3
;
5698 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5700 if (bfd_link_pic (info
))
5701 stub
= ".plt_pic32.";
5703 stub
= ".plt_call32.";
5705 len1
= strlen (h
->root
.root
.string
);
5706 len2
= strlen (stub
);
5709 len3
= strlen (ent
->sec
->name
);
5710 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5713 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5715 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5716 memcpy (name
+ 8 + len3
, stub
, len2
);
5717 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5718 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5721 if (sh
->root
.type
== bfd_link_hash_new
)
5723 sh
->root
.type
= bfd_link_hash_defined
;
5724 sh
->root
.u
.def
.section
= htab
->glink
;
5725 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5726 sh
->ref_regular
= 1;
5727 sh
->def_regular
= 1;
5728 sh
->ref_regular_nonweak
= 1;
5729 sh
->forced_local
= 1;
5731 sh
->root
.linker_def
= 1;
5736 /* Allocate NEED contiguous space in .got, and return the offset.
5737 Handles allocation of the got header when crossing 32k. */
5740 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5743 unsigned int max_before_header
;
5745 if (htab
->plt_type
== PLT_VXWORKS
)
5747 where
= htab
->elf
.sgot
->size
;
5748 htab
->elf
.sgot
->size
+= need
;
5752 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5753 if (need
<= htab
->got_gap
)
5755 where
= max_before_header
- htab
->got_gap
;
5756 htab
->got_gap
-= need
;
5760 if (htab
->elf
.sgot
->size
+ need
> max_before_header
5761 && htab
->elf
.sgot
->size
<= max_before_header
)
5763 htab
->got_gap
= max_before_header
- htab
->elf
.sgot
->size
;
5764 htab
->elf
.sgot
->size
= max_before_header
+ htab
->got_header_size
;
5766 where
= htab
->elf
.sgot
->size
;
5767 htab
->elf
.sgot
->size
+= need
;
5773 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5774 TLS_LD is excluded because those go in a special GOT slot. */
5776 static inline unsigned int
5777 got_entries_needed (int tls_mask
)
5780 if ((tls_mask
& TLS_TLS
) == 0)
5785 if ((tls_mask
& TLS_GD
) != 0)
5787 if ((tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5789 if ((tls_mask
& TLS_DTPREL
) != 0)
5795 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5796 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5799 static inline unsigned int
5800 got_relocs_needed (int tls_mask
, unsigned int need
, bfd_boolean known
)
5802 /* All the entries we allocated need relocs.
5803 Except IE in executable with a local symbol. We could also omit
5804 the DTPREL reloc on the second word of a GD entry under the same
5805 condition as that for IE, but ld.so needs to differentiate
5806 LD and GD entries. */
5807 if ((tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0 && known
)
5809 return need
* sizeof (Elf32_External_Rela
) / 4;
5812 /* If H is undefined, make it dynamic if that makes sense. */
5815 ensure_undef_dynamic (struct bfd_link_info
*info
,
5816 struct elf_link_hash_entry
*h
)
5818 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5820 if (htab
->dynamic_sections_created
5821 && ((info
->dynamic_undefined_weak
!= 0
5822 && h
->root
.type
== bfd_link_hash_undefweak
)
5823 || h
->root
.type
== bfd_link_hash_undefined
)
5826 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
5827 return bfd_elf_link_record_dynamic_symbol (info
, h
);
5831 /* Allocate space in associated reloc sections for dynamic relocs. */
5834 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5836 struct bfd_link_info
*info
= inf
;
5837 struct ppc_elf_link_hash_entry
*eh
;
5838 struct ppc_elf_link_hash_table
*htab
;
5839 struct elf_dyn_relocs
*p
;
5842 if (h
->root
.type
== bfd_link_hash_indirect
)
5845 htab
= ppc_elf_hash_table (info
);
5846 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5847 if (eh
->elf
.got
.refcount
> 0
5848 || (ELIMINATE_COPY_RELOCS
5849 && !eh
->elf
.def_regular
5850 && eh
->elf
.protected_def
5851 && eh
->has_addr16_ha
5852 && eh
->has_addr16_lo
5853 && htab
->params
->pic_fixup
> 0))
5857 /* Make sure this symbol is output as a dynamic symbol. */
5858 if (!ensure_undef_dynamic (info
, &eh
->elf
))
5862 if ((eh
->tls_mask
& TLS_LD
) != 0)
5864 if (!eh
->elf
.def_dynamic
)
5865 /* We'll just use htab->tlsld_got.offset. This should
5866 always be the case. It's a little odd if we have
5867 a local dynamic reloc against a non-local symbol. */
5868 htab
->tlsld_got
.refcount
+= 1;
5872 need
+= got_entries_needed (eh
->tls_mask
);
5874 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5877 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
5878 if ((bfd_link_pic (info
)
5879 || (htab
->elf
.dynamic_sections_created
5880 && eh
->elf
.dynindx
!= -1
5881 && !SYMBOL_REFERENCES_LOCAL (info
, &eh
->elf
)))
5882 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, &eh
->elf
))
5885 bfd_boolean tprel_known
= (bfd_link_executable (info
)
5886 && SYMBOL_REFERENCES_LOCAL (info
,
5889 need
= got_relocs_needed (eh
->tls_mask
, need
, tprel_known
);
5890 if ((eh
->tls_mask
& TLS_LD
) != 0 && eh
->elf
.def_dynamic
)
5891 need
-= sizeof (Elf32_External_Rela
);
5892 rsec
= htab
->elf
.srelgot
;
5893 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5894 rsec
= htab
->elf
.irelplt
;
5900 eh
->elf
.got
.offset
= (bfd_vma
) -1;
5902 /* If no dynamic sections we can't have dynamic relocs, except for
5903 IFUNCs which are handled even in static executables. */
5904 if (!htab
->elf
.dynamic_sections_created
5905 && h
->type
!= STT_GNU_IFUNC
)
5906 eh
->dyn_relocs
= NULL
;
5908 /* Discard relocs on undefined symbols that must be local. */
5909 else if (h
->root
.type
== bfd_link_hash_undefined
5910 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
5911 eh
->dyn_relocs
= NULL
;
5913 /* Also discard relocs on undefined weak syms with non-default
5914 visibility, or when dynamic_undefined_weak says so. */
5915 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
5916 eh
->dyn_relocs
= NULL
;
5918 if (eh
->dyn_relocs
== NULL
)
5921 /* In the shared -Bsymbolic case, discard space allocated for
5922 dynamic pc-relative relocs against symbols which turn out to be
5923 defined in regular objects. For the normal shared case, discard
5924 space for relocs that have become local due to symbol visibility
5926 else if (bfd_link_pic (info
))
5928 /* Relocs that use pc_count are those that appear on a call insn,
5929 or certain REL relocs (see must_be_dyn_reloc) that can be
5930 generated via assembly. We want calls to protected symbols to
5931 resolve directly to the function rather than going via the plt.
5932 If people want function pointer comparisons to work as expected
5933 then they should avoid writing weird assembly. */
5934 if (SYMBOL_CALLS_LOCAL (info
, h
))
5936 struct elf_dyn_relocs
**pp
;
5938 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5940 p
->count
-= p
->pc_count
;
5949 if (htab
->is_vxworks
)
5951 struct elf_dyn_relocs
**pp
;
5953 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5955 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
5962 if (eh
->dyn_relocs
!= NULL
)
5964 /* Make sure this symbol is output as a dynamic symbol. */
5965 if (!ensure_undef_dynamic (info
, h
))
5969 else if (ELIMINATE_COPY_RELOCS
)
5971 /* For the non-pic case, discard space for relocs against
5972 symbols which turn out to need copy relocs or are not
5974 if (h
->dynamic_adjusted
5976 && !ELF_COMMON_DEF_P (h
)
5977 && !(h
->protected_def
5978 && eh
->has_addr16_ha
5979 && eh
->has_addr16_lo
5980 && htab
->params
->pic_fixup
> 0))
5982 /* Make sure this symbol is output as a dynamic symbol. */
5983 if (!ensure_undef_dynamic (info
, h
))
5986 if (h
->dynindx
== -1)
5987 eh
->dyn_relocs
= NULL
;
5990 eh
->dyn_relocs
= NULL
;
5993 /* Allocate space. */
5994 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5996 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5997 if (eh
->elf
.type
== STT_GNU_IFUNC
)
5998 sreloc
= htab
->elf
.irelplt
;
5999 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6002 /* Handle PLT relocs. Done last, after dynindx has settled. */
6003 dyn
= htab
->elf
.dynamic_sections_created
&& h
->dynindx
!= -1;
6004 if (dyn
|| h
->type
== STT_GNU_IFUNC
)
6006 struct plt_entry
*ent
;
6007 bfd_boolean doneone
= FALSE
;
6008 bfd_vma plt_offset
= 0, glink_offset
= 0;
6010 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6011 if (ent
->plt
.refcount
> 0)
6013 asection
*s
= htab
->elf
.splt
;
6018 if (htab
->plt_type
== PLT_NEW
|| !dyn
)
6022 plt_offset
= s
->size
;
6025 ent
->plt
.offset
= plt_offset
;
6028 if (!doneone
|| bfd_link_pic (info
))
6030 glink_offset
= s
->size
;
6031 s
->size
+= GLINK_ENTRY_SIZE (htab
, h
);
6034 && !bfd_link_pic (info
)
6038 h
->root
.u
.def
.section
= s
;
6039 h
->root
.u
.def
.value
= glink_offset
;
6041 ent
->glink_offset
= glink_offset
;
6043 if (htab
->params
->emit_stub_syms
6044 && !add_stub_sym (ent
, h
, info
))
6051 /* If this is the first .plt entry, make room
6052 for the special first entry. */
6054 s
->size
+= htab
->plt_initial_entry_size
;
6056 /* The PowerPC PLT is actually composed of two
6057 parts, the first part is 2 words (for a load
6058 and a jump), and then there is a remaining
6059 word available at the end. */
6060 plt_offset
= (htab
->plt_initial_entry_size
6061 + (htab
->plt_slot_size
6063 - htab
->plt_initial_entry_size
)
6064 / htab
->plt_entry_size
)));
6066 /* If this symbol is not defined in a regular
6067 file, and we are not generating a shared
6068 library, then set the symbol to this location
6069 in the .plt. This is to avoid text
6070 relocations, and is required to make
6071 function pointers compare as equal between
6072 the normal executable and the shared library. */
6073 if (! bfd_link_pic (info
)
6077 h
->root
.u
.def
.section
= s
;
6078 h
->root
.u
.def
.value
= plt_offset
;
6081 /* Make room for this entry. */
6082 s
->size
+= htab
->plt_entry_size
;
6083 /* After the 8192nd entry, room for two entries
6085 if (htab
->plt_type
== PLT_OLD
6086 && (s
->size
- htab
->plt_initial_entry_size
)
6087 / htab
->plt_entry_size
6088 > PLT_NUM_SINGLE_ENTRIES
)
6089 s
->size
+= htab
->plt_entry_size
;
6091 ent
->plt
.offset
= plt_offset
;
6094 /* We also need to make an entry in the .rela.plt section. */
6098 htab
->elf
.irelplt
->size
+= sizeof (Elf32_External_Rela
);
6101 htab
->elf
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
6103 if (htab
->plt_type
== PLT_VXWORKS
)
6105 /* Allocate space for the unloaded relocations. */
6106 if (!bfd_link_pic (info
)
6107 && htab
->elf
.dynamic_sections_created
)
6110 == (bfd_vma
) htab
->plt_initial_entry_size
)
6112 htab
->srelplt2
->size
6113 += (sizeof (Elf32_External_Rela
)
6114 * VXWORKS_PLTRESOLVE_RELOCS
);
6117 htab
->srelplt2
->size
6118 += (sizeof (Elf32_External_Rela
)
6119 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
6122 /* Every PLT entry has an associated GOT entry in
6124 htab
->elf
.sgotplt
->size
+= 4;
6131 ent
->plt
.offset
= (bfd_vma
) -1;
6135 h
->plt
.plist
= NULL
;
6141 h
->plt
.plist
= NULL
;
6148 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6149 read-only sections. */
6152 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
6156 if (h
->root
.type
== bfd_link_hash_indirect
)
6159 sec
= readonly_dynrelocs (h
);
6162 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
6164 info
->flags
|= DF_TEXTREL
;
6165 info
->callbacks
->minfo
6166 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
6167 sec
->owner
, h
->root
.root
.string
, sec
);
6169 /* Not an error, just cut short the traversal. */
6175 static const unsigned char glink_eh_frame_cie
[] =
6177 0, 0, 0, 16, /* length. */
6178 0, 0, 0, 0, /* id. */
6179 1, /* CIE version. */
6180 'z', 'R', 0, /* Augmentation string. */
6181 4, /* Code alignment. */
6182 0x7c, /* Data alignment. */
6184 1, /* Augmentation size. */
6185 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6186 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6189 /* Set the sizes of the dynamic sections. */
6192 ppc_elf_size_dynamic_sections (bfd
*output_bfd
,
6193 struct bfd_link_info
*info
)
6195 struct ppc_elf_link_hash_table
*htab
;
6201 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6204 htab
= ppc_elf_hash_table (info
);
6205 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6207 if (elf_hash_table (info
)->dynamic_sections_created
)
6209 /* Set the contents of the .interp section to the interpreter. */
6210 if (bfd_link_executable (info
) && !info
->nointerp
)
6212 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6213 BFD_ASSERT (s
!= NULL
);
6214 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6215 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6219 if (htab
->plt_type
== PLT_OLD
)
6220 htab
->got_header_size
= 16;
6221 else if (htab
->plt_type
== PLT_NEW
)
6222 htab
->got_header_size
= 12;
6224 /* Set up .got offsets for local syms, and space for local dynamic
6226 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
6228 bfd_signed_vma
*local_got
;
6229 bfd_signed_vma
*end_local_got
;
6230 struct plt_entry
**local_plt
;
6231 struct plt_entry
**end_local_plt
;
6233 bfd_size_type locsymcount
;
6234 Elf_Internal_Shdr
*symtab_hdr
;
6236 if (!is_ppc_elf (ibfd
))
6239 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6241 struct ppc_dyn_relocs
*p
;
6243 for (p
= ((struct ppc_dyn_relocs
*)
6244 elf_section_data (s
)->local_dynrel
);
6248 if (!bfd_is_abs_section (p
->sec
)
6249 && bfd_is_abs_section (p
->sec
->output_section
))
6251 /* Input section has been discarded, either because
6252 it is a copy of a linkonce section or due to
6253 linker script /DISCARD/, so we'll be discarding
6256 else if (htab
->is_vxworks
6257 && strcmp (p
->sec
->output_section
->name
,
6260 /* Relocations in vxworks .tls_vars sections are
6261 handled specially by the loader. */
6263 else if (p
->count
!= 0)
6265 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6267 sreloc
= htab
->elf
.irelplt
;
6268 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6269 if ((p
->sec
->output_section
->flags
6270 & (SEC_READONLY
| SEC_ALLOC
))
6271 == (SEC_READONLY
| SEC_ALLOC
))
6273 info
->flags
|= DF_TEXTREL
;
6274 info
->callbacks
->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
6275 p
->sec
->owner
, p
->sec
);
6281 local_got
= elf_local_got_refcounts (ibfd
);
6285 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6286 locsymcount
= symtab_hdr
->sh_info
;
6287 end_local_got
= local_got
+ locsymcount
;
6288 local_plt
= (struct plt_entry
**) end_local_got
;
6289 end_local_plt
= local_plt
+ locsymcount
;
6290 lgot_masks
= (char *) end_local_plt
;
6292 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6296 if ((*lgot_masks
& TLS_LD
) != 0)
6297 htab
->tlsld_got
.refcount
+= 1;
6298 need
= got_entries_needed (*lgot_masks
);
6300 *local_got
= (bfd_vma
) -1;
6303 *local_got
= allocate_got (htab
, need
);
6304 if (bfd_link_pic (info
))
6307 bfd_boolean tprel_known
= bfd_link_executable (info
);
6309 need
= got_relocs_needed (*lgot_masks
, need
, tprel_known
);
6310 srel
= htab
->elf
.srelgot
;
6311 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6312 srel
= htab
->elf
.irelplt
;
6318 *local_got
= (bfd_vma
) -1;
6320 if (htab
->is_vxworks
)
6323 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6324 for (; local_plt
< end_local_plt
; ++local_plt
)
6326 struct plt_entry
*ent
;
6327 bfd_boolean doneone
= FALSE
;
6328 bfd_vma plt_offset
= 0, glink_offset
= 0;
6330 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6331 if (ent
->plt
.refcount
> 0)
6337 plt_offset
= s
->size
;
6340 ent
->plt
.offset
= plt_offset
;
6343 if (!doneone
|| bfd_link_pic (info
))
6345 glink_offset
= s
->size
;
6346 s
->size
+= GLINK_ENTRY_SIZE (htab
, NULL
);
6348 ent
->glink_offset
= glink_offset
;
6352 htab
->elf
.irelplt
->size
+= sizeof (Elf32_External_Rela
);
6357 ent
->plt
.offset
= (bfd_vma
) -1;
6361 /* Allocate space for global sym dynamic relocs. */
6362 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6364 if (htab
->tlsld_got
.refcount
> 0)
6366 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6367 if (bfd_link_pic (info
))
6368 htab
->elf
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
6371 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6373 if (htab
->elf
.sgot
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6375 unsigned int g_o_t
= 32768;
6377 /* If we haven't allocated the header, do so now. When we get here,
6378 for old plt/got the got size will be 0 to 32764 (not allocated),
6379 or 32780 to 65536 (header allocated). For new plt/got, the
6380 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6381 if (htab
->elf
.sgot
->size
<= 32768)
6383 g_o_t
= htab
->elf
.sgot
->size
;
6384 if (htab
->plt_type
== PLT_OLD
)
6386 htab
->elf
.sgot
->size
+= htab
->got_header_size
;
6389 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6391 if (bfd_link_pic (info
))
6393 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6395 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6396 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6398 if (info
->emitrelocations
)
6400 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6402 if (sda
!= NULL
&& sda
->ref_regular
)
6403 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6404 sda
= htab
->sdata
[1].sym
;
6405 if (sda
!= NULL
&& sda
->ref_regular
)
6406 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6409 if (htab
->glink
!= NULL
6410 && htab
->glink
->size
!= 0
6411 && htab
->elf
.dynamic_sections_created
)
6413 htab
->glink_pltresolve
= htab
->glink
->size
;
6414 /* Space for the branch table. */
6416 += htab
->elf
.srelplt
->size
/ (sizeof (Elf32_External_Rela
) / 4) - 4;
6417 /* Pad out to align the start of PLTresolve. */
6418 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6420 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6422 if (htab
->params
->emit_stub_syms
)
6424 struct elf_link_hash_entry
*sh
;
6425 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6426 TRUE
, FALSE
, FALSE
);
6429 if (sh
->root
.type
== bfd_link_hash_new
)
6431 sh
->root
.type
= bfd_link_hash_defined
;
6432 sh
->root
.u
.def
.section
= htab
->glink
;
6433 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6434 sh
->ref_regular
= 1;
6435 sh
->def_regular
= 1;
6436 sh
->ref_regular_nonweak
= 1;
6437 sh
->forced_local
= 1;
6439 sh
->root
.linker_def
= 1;
6441 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6442 TRUE
, FALSE
, FALSE
);
6445 if (sh
->root
.type
== bfd_link_hash_new
)
6447 sh
->root
.type
= bfd_link_hash_defined
;
6448 sh
->root
.u
.def
.section
= htab
->glink
;
6449 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6450 sh
->ref_regular
= 1;
6451 sh
->def_regular
= 1;
6452 sh
->ref_regular_nonweak
= 1;
6453 sh
->forced_local
= 1;
6455 sh
->root
.linker_def
= 1;
6460 if (htab
->glink
!= NULL
6461 && htab
->glink
->size
!= 0
6462 && htab
->glink_eh_frame
!= NULL
6463 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6464 && _bfd_elf_eh_frame_present (info
))
6466 s
= htab
->glink_eh_frame
;
6467 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6468 if (bfd_link_pic (info
))
6471 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6476 /* We've now determined the sizes of the various dynamic sections.
6477 Allocate memory for them. */
6479 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6481 bfd_boolean strip_section
= TRUE
;
6483 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6486 if (s
== htab
->elf
.splt
6487 || s
== htab
->elf
.sgot
)
6489 /* We'd like to strip these sections if they aren't needed, but if
6490 we've exported dynamic symbols from them we must leave them.
6491 It's too late to tell BFD to get rid of the symbols. */
6492 if (htab
->elf
.hplt
!= NULL
)
6493 strip_section
= FALSE
;
6494 /* Strip this section if we don't need it; see the
6497 else if (s
== htab
->elf
.iplt
6499 || s
== htab
->glink_eh_frame
6500 || s
== htab
->elf
.sgotplt
6502 || s
== htab
->elf
.sdynbss
6503 || s
== htab
->elf
.sdynrelro
6504 || s
== htab
->dynsbss
)
6506 /* Strip these too. */
6508 else if (s
== htab
->sdata
[0].section
6509 || s
== htab
->sdata
[1].section
)
6511 strip_section
= (s
->flags
& SEC_KEEP
) == 0;
6513 else if (CONST_STRNEQ (bfd_get_section_name (htab
->elf
.dynobj
, s
),
6518 /* Remember whether there are any relocation sections. */
6521 /* We use the reloc_count field as a counter if we need
6522 to copy relocs into the output file. */
6528 /* It's not one of our sections, so don't allocate space. */
6532 if (s
->size
== 0 && strip_section
)
6534 /* If we don't need this section, strip it from the
6535 output file. This is mostly to handle .rela.bss and
6536 .rela.plt. We must create both sections in
6537 create_dynamic_sections, because they must be created
6538 before the linker maps input sections to output
6539 sections. The linker does that before
6540 adjust_dynamic_symbol is called, and it is that
6541 function which decides whether anything needs to go
6542 into these sections. */
6543 s
->flags
|= SEC_EXCLUDE
;
6547 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
6550 /* Allocate memory for the section contents. */
6551 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
6552 if (s
->contents
== NULL
)
6556 if (htab
->elf
.dynamic_sections_created
)
6558 /* Add some entries to the .dynamic section. We fill in the
6559 values later, in ppc_elf_finish_dynamic_sections, but we
6560 must add the entries now so that we get the correct size for
6561 the .dynamic section. The DT_DEBUG entry is filled in by the
6562 dynamic linker and used by the debugger. */
6563 #define add_dynamic_entry(TAG, VAL) \
6564 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6566 if (bfd_link_executable (info
))
6568 if (!add_dynamic_entry (DT_DEBUG
, 0))
6572 if (htab
->elf
.splt
!= NULL
&& htab
->elf
.splt
->size
!= 0)
6574 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6575 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6576 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6577 || !add_dynamic_entry (DT_JMPREL
, 0))
6581 if (htab
->plt_type
== PLT_NEW
6582 && htab
->glink
!= NULL
6583 && htab
->glink
->size
!= 0)
6585 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
6587 if (!htab
->params
->no_tls_get_addr_opt
6588 && htab
->tls_get_addr
!= NULL
6589 && htab
->tls_get_addr
->plt
.plist
!= NULL
6590 && !add_dynamic_entry (DT_PPC_OPT
, PPC_OPT_TLS
))
6596 if (!add_dynamic_entry (DT_RELA
, 0)
6597 || !add_dynamic_entry (DT_RELASZ
, 0)
6598 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
6602 /* If any dynamic relocs apply to a read-only section, then we
6603 need a DT_TEXTREL entry. */
6604 if ((info
->flags
& DF_TEXTREL
) == 0)
6605 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
6608 if ((info
->flags
& DF_TEXTREL
) != 0)
6610 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6613 if (htab
->is_vxworks
6614 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
6617 #undef add_dynamic_entry
6619 if (htab
->glink_eh_frame
!= NULL
6620 && htab
->glink_eh_frame
->contents
!= NULL
)
6622 unsigned char *p
= htab
->glink_eh_frame
->contents
;
6625 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
6626 /* CIE length (rewrite in case little-endian). */
6627 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
6628 p
+= sizeof (glink_eh_frame_cie
);
6630 val
= htab
->glink_eh_frame
->size
- 4 - sizeof (glink_eh_frame_cie
);
6631 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6634 val
= p
- htab
->glink_eh_frame
->contents
;
6635 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6637 /* Offset to .glink. Set later. */
6640 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
, p
);
6645 if (bfd_link_pic (info
)
6646 && htab
->elf
.dynamic_sections_created
)
6648 bfd_vma adv
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8) >> 2;
6650 *p
++ = DW_CFA_advance_loc
+ adv
;
6653 *p
++ = DW_CFA_advance_loc1
;
6656 else if (adv
< 65536)
6658 *p
++ = DW_CFA_advance_loc2
;
6659 bfd_put_16 (htab
->elf
.dynobj
, adv
, p
);
6664 *p
++ = DW_CFA_advance_loc4
;
6665 bfd_put_32 (htab
->elf
.dynobj
, adv
, p
);
6668 *p
++ = DW_CFA_register
;
6671 *p
++ = DW_CFA_advance_loc
+ 4;
6672 *p
++ = DW_CFA_restore_extended
;
6675 BFD_ASSERT ((bfd_vma
) ((p
+ 3 - htab
->glink_eh_frame
->contents
) & -4)
6676 == htab
->glink_eh_frame
->size
);
6682 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6683 if it looks like nothing is using them. */
6686 maybe_strip_sdasym (bfd
*output_bfd
, elf_linker_section_t
*lsect
)
6688 struct elf_link_hash_entry
*sda
= lsect
->sym
;
6690 if (sda
!= NULL
&& !sda
->ref_regular
&& sda
->dynindx
== -1)
6694 s
= bfd_get_section_by_name (output_bfd
, lsect
->name
);
6695 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6697 s
= bfd_get_section_by_name (output_bfd
, lsect
->bss_name
);
6698 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6700 sda
->def_regular
= 0;
6701 /* This is somewhat magic. See elf_link_output_extsym. */
6702 sda
->ref_dynamic
= 1;
6703 sda
->forced_local
= 0;
6710 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info
*info
)
6712 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6716 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[0]);
6717 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[1]);
6722 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6725 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6727 if (h
->plt
.plist
!= NULL
6729 && (!h
->pointer_equality_needed
6730 || !h
->ref_regular_nonweak
))
6733 return _bfd_elf_hash_symbol (h
);
6736 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6738 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6739 used for some functions that are allowed to break the ABI). */
6740 static const int shared_stub_entry
[] =
6742 0x7c0802a6, /* mflr 0 */
6743 0x429f0005, /* bcl 20, 31, .Lxxx */
6744 0x7d8802a6, /* mflr 12 */
6745 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6746 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6747 0x7c0803a6, /* mtlr 0 */
6748 0x7d8903a6, /* mtctr 12 */
6749 0x4e800420, /* bctr */
6752 static const int stub_entry
[] =
6754 0x3d800000, /* lis 12,xxx@ha */
6755 0x398c0000, /* addi 12,12,xxx@l */
6756 0x7d8903a6, /* mtctr 12 */
6757 0x4e800420, /* bctr */
6760 struct ppc_elf_relax_info
6762 unsigned int workaround_size
;
6763 unsigned int picfixup_size
;
6766 /* This function implements long branch trampolines, and the ppc476
6767 icache bug workaround. Any section needing trampolines or patch
6768 space for the workaround has its size extended so that we can
6769 add trampolines at the end of the section. */
6772 ppc_elf_relax_section (bfd
*abfd
,
6774 struct bfd_link_info
*link_info
,
6777 struct one_branch_fixup
6779 struct one_branch_fixup
*next
;
6781 /* Final link, can use the symbol offset. For a
6782 relocatable link we use the symbol's index. */
6787 Elf_Internal_Shdr
*symtab_hdr
;
6788 bfd_byte
*contents
= NULL
;
6789 Elf_Internal_Sym
*isymbuf
= NULL
;
6790 Elf_Internal_Rela
*internal_relocs
= NULL
;
6791 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6792 struct one_branch_fixup
*branch_fixups
= NULL
;
6793 struct ppc_elf_relax_info
*relax_info
= NULL
;
6794 unsigned changes
= 0;
6795 bfd_boolean workaround_change
;
6796 struct ppc_elf_link_hash_table
*htab
;
6797 bfd_size_type trampbase
, trampoff
, newsize
, picfixup_size
;
6799 bfd_boolean maybe_pasted
;
6803 /* No need to do anything with non-alloc or non-code sections. */
6804 if ((isec
->flags
& SEC_ALLOC
) == 0
6805 || (isec
->flags
& SEC_CODE
) == 0
6806 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6810 /* We cannot represent the required PIC relocs in the output, so don't
6811 do anything. The linker doesn't support mixing -shared and -r
6813 if (bfd_link_relocatable (link_info
) && bfd_link_pic (link_info
))
6816 htab
= ppc_elf_hash_table (link_info
);
6820 isec
->size
= (isec
->size
+ 3) & -4;
6821 if (isec
->rawsize
== 0)
6822 isec
->rawsize
= isec
->size
;
6823 trampbase
= isec
->size
;
6825 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6826 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6827 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6829 if (htab
->params
->ppc476_workaround
6830 || htab
->params
->pic_fixup
> 0)
6832 if (elf_section_data (isec
)->sec_info
== NULL
)
6834 elf_section_data (isec
)->sec_info
6835 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
6836 if (elf_section_data (isec
)->sec_info
== NULL
)
6839 relax_info
= elf_section_data (isec
)->sec_info
;
6840 trampbase
-= relax_info
->workaround_size
;
6843 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6844 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6845 /* Space for a branch around any trampolines. */
6846 trampoff
= trampbase
;
6847 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
6850 symtab_hdr
= &elf_symtab_hdr (abfd
);
6852 if (htab
->params
->branch_trampolines
6853 || htab
->params
->pic_fixup
> 0)
6855 /* Get a copy of the native relocations. */
6856 if (isec
->reloc_count
!= 0)
6858 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6859 link_info
->keep_memory
);
6860 if (internal_relocs
== NULL
)
6864 got2
= bfd_get_section_by_name (abfd
, ".got2");
6866 irelend
= internal_relocs
+ isec
->reloc_count
;
6867 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6869 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6872 struct one_branch_fixup
*f
;
6873 size_t insn_offset
= 0;
6874 bfd_vma max_branch_offset
= 0, val
;
6877 struct elf_link_hash_entry
*h
;
6878 struct plt_entry
**plist
;
6879 unsigned char sym_type
;
6884 case R_PPC_LOCAL24PC
:
6885 case R_PPC_PLTREL24
:
6886 max_branch_offset
= 1 << 25;
6890 case R_PPC_REL14_BRTAKEN
:
6891 case R_PPC_REL14_BRNTAKEN
:
6892 max_branch_offset
= 1 << 15;
6895 case R_PPC_ADDR16_HA
:
6896 if (htab
->params
->pic_fixup
> 0)
6904 /* Get the value of the symbol referred to by the reloc. */
6906 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6908 /* A local symbol. */
6909 Elf_Internal_Sym
*isym
;
6911 /* Read this BFD's local symbols. */
6912 if (isymbuf
== NULL
)
6914 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6915 if (isymbuf
== NULL
)
6916 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
6917 symtab_hdr
->sh_info
, 0,
6922 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6923 if (isym
->st_shndx
== SHN_UNDEF
)
6924 tsec
= bfd_und_section_ptr
;
6925 else if (isym
->st_shndx
== SHN_ABS
)
6926 tsec
= bfd_abs_section_ptr
;
6927 else if (isym
->st_shndx
== SHN_COMMON
)
6928 tsec
= bfd_com_section_ptr
;
6930 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6932 toff
= isym
->st_value
;
6933 sym_type
= ELF_ST_TYPE (isym
->st_info
);
6937 /* Global symbol handling. */
6940 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6941 h
= elf_sym_hashes (abfd
)[indx
];
6943 while (h
->root
.type
== bfd_link_hash_indirect
6944 || h
->root
.type
== bfd_link_hash_warning
)
6945 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6947 if (h
->root
.type
== bfd_link_hash_defined
6948 || h
->root
.type
== bfd_link_hash_defweak
)
6950 tsec
= h
->root
.u
.def
.section
;
6951 toff
= h
->root
.u
.def
.value
;
6953 else if (h
->root
.type
== bfd_link_hash_undefined
6954 || h
->root
.type
== bfd_link_hash_undefweak
)
6956 tsec
= bfd_und_section_ptr
;
6957 toff
= bfd_link_relocatable (link_info
) ? indx
: 0;
6962 /* If this branch is to __tls_get_addr then we may later
6963 optimise away the call. We won't be needing a long-
6964 branch stub in that case. */
6965 if (bfd_link_executable (link_info
)
6966 && h
== htab
->tls_get_addr
6967 && irel
!= internal_relocs
)
6969 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
6970 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
6971 unsigned int tls_mask
= 0;
6973 /* The previous reloc should be one of R_PPC_TLSGD or
6974 R_PPC_TLSLD, or for older object files, a reloc
6975 on the __tls_get_addr arg setup insn. Get tls
6976 mask bits from the symbol on that reloc. */
6977 if (t_symndx
< symtab_hdr
->sh_info
)
6979 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
6981 if (local_got_offsets
!= NULL
)
6983 struct plt_entry
**local_plt
= (struct plt_entry
**)
6984 (local_got_offsets
+ symtab_hdr
->sh_info
);
6985 char *lgot_masks
= (char *)
6986 (local_plt
+ symtab_hdr
->sh_info
);
6987 tls_mask
= lgot_masks
[t_symndx
];
6992 struct elf_link_hash_entry
*th
6993 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
6995 while (th
->root
.type
== bfd_link_hash_indirect
6996 || th
->root
.type
== bfd_link_hash_warning
)
6997 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
7000 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
7003 /* The mask bits tell us if the call will be
7005 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
7006 && (t_rtype
== R_PPC_TLSGD
7007 || t_rtype
== R_PPC_GOT_TLSGD16
7008 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
7010 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
7011 && (t_rtype
== R_PPC_TLSLD
7012 || t_rtype
== R_PPC_GOT_TLSLD16
7013 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
7020 if (r_type
== R_PPC_ADDR16_HA
)
7025 && ppc_elf_hash_entry (h
)->has_addr16_ha
7026 && ppc_elf_hash_entry (h
)->has_addr16_lo
)
7027 picfixup_size
+= 12;
7031 /* The condition here under which we call find_plt_ent must
7032 match that in relocate_section. If we call find_plt_ent here
7033 but not in relocate_section, or vice versa, then the branch
7034 destination used here may be incorrect. */
7038 /* We know is_branch_reloc (r_type) is true. */
7039 if (h
->type
== STT_GNU_IFUNC
7040 || r_type
== R_PPC_PLTREL24
)
7041 plist
= &h
->plt
.plist
;
7043 else if (sym_type
== STT_GNU_IFUNC
7044 && elf_local_got_offsets (abfd
) != NULL
)
7046 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7047 struct plt_entry
**local_plt
= (struct plt_entry
**)
7048 (local_got_offsets
+ symtab_hdr
->sh_info
);
7049 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
7054 struct plt_entry
*ent
;
7056 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (link_info
))
7057 addend
= irel
->r_addend
;
7058 ent
= find_plt_ent (plist
, got2
, addend
);
7061 if (htab
->plt_type
== PLT_NEW
7063 || !htab
->elf
.dynamic_sections_created
7064 || h
->dynindx
== -1)
7067 toff
= ent
->glink_offset
;
7071 tsec
= htab
->elf
.splt
;
7072 toff
= ent
->plt
.offset
;
7077 /* If the branch and target are in the same section, you have
7078 no hope of adding stubs. We'll error out later should the
7083 /* There probably isn't any reason to handle symbols in
7084 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7085 attribute for a code section, and we are only looking at
7086 branches. However, implement it correctly here as a
7087 reference for other target relax_section functions. */
7088 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
7090 /* At this stage in linking, no SEC_MERGE symbol has been
7091 adjusted, so all references to such symbols need to be
7092 passed through _bfd_merged_section_offset. (Later, in
7093 relocate_section, all SEC_MERGE symbols *except* for
7094 section symbols have been adjusted.)
7096 gas may reduce relocations against symbols in SEC_MERGE
7097 sections to a relocation against the section symbol when
7098 the original addend was zero. When the reloc is against
7099 a section symbol we should include the addend in the
7100 offset passed to _bfd_merged_section_offset, since the
7101 location of interest is the original symbol. On the
7102 other hand, an access to "sym+addend" where "sym" is not
7103 a section symbol should not include the addend; Such an
7104 access is presumed to be an offset from "sym"; The
7105 location of interest is just "sym". */
7106 if (sym_type
== STT_SECTION
)
7107 toff
+= irel
->r_addend
;
7110 = _bfd_merged_section_offset (abfd
, &tsec
,
7111 elf_section_data (tsec
)->sec_info
,
7114 if (sym_type
!= STT_SECTION
)
7115 toff
+= irel
->r_addend
;
7117 /* PLTREL24 addends are special. */
7118 else if (r_type
!= R_PPC_PLTREL24
)
7119 toff
+= irel
->r_addend
;
7121 /* Attempted -shared link of non-pic code loses. */
7122 if ((!bfd_link_relocatable (link_info
)
7123 && tsec
== bfd_und_section_ptr
)
7124 || tsec
->output_section
== NULL
7125 || (tsec
->owner
!= NULL
7126 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
7129 roff
= irel
->r_offset
;
7131 /* If the branch is in range, no need to do anything. */
7132 if (tsec
!= bfd_und_section_ptr
7133 && (!bfd_link_relocatable (link_info
)
7134 /* A relocatable link may have sections moved during
7135 final link, so do not presume they remain in range. */
7136 || tsec
->output_section
== isec
->output_section
))
7138 bfd_vma symaddr
, reladdr
;
7140 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7141 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7142 if (symaddr
- reladdr
+ max_branch_offset
7143 < 2 * max_branch_offset
)
7147 /* Look for an existing fixup to this address. */
7148 for (f
= branch_fixups
; f
; f
= f
->next
)
7149 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7155 unsigned long stub_rtype
;
7157 val
= trampoff
- roff
;
7158 if (val
>= max_branch_offset
)
7159 /* Oh dear, we can't reach a trampoline. Don't try to add
7160 one. We'll report an error later. */
7163 if (bfd_link_pic (link_info
))
7165 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7170 size
= 4 * ARRAY_SIZE (stub_entry
);
7173 stub_rtype
= R_PPC_RELAX
;
7174 if (tsec
== htab
->elf
.splt
7175 || tsec
== htab
->glink
)
7177 stub_rtype
= R_PPC_RELAX_PLT
;
7178 if (r_type
== R_PPC_PLTREL24
)
7179 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7182 /* Hijack the old relocation. Since we need two
7183 relocations for this use a "composite" reloc. */
7184 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7186 irel
->r_offset
= trampoff
+ insn_offset
;
7187 if (r_type
== R_PPC_PLTREL24
7188 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7191 /* Record the fixup so we don't do it again this section. */
7192 f
= bfd_malloc (sizeof (*f
));
7193 f
->next
= branch_fixups
;
7196 f
->trampoff
= trampoff
;
7204 val
= f
->trampoff
- roff
;
7205 if (val
>= max_branch_offset
)
7208 /* Nop out the reloc, since we're finalizing things here. */
7209 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7212 /* Get the section contents. */
7213 if (contents
== NULL
)
7215 /* Get cached copy if it exists. */
7216 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7217 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7218 /* Go get them off disk. */
7219 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7223 /* Fix up the existing branch to hit the trampoline. */
7224 hit_addr
= contents
+ roff
;
7228 case R_PPC_LOCAL24PC
:
7229 case R_PPC_PLTREL24
:
7230 t0
= bfd_get_32 (abfd
, hit_addr
);
7232 t0
|= val
& 0x3fffffc;
7233 bfd_put_32 (abfd
, t0
, hit_addr
);
7237 case R_PPC_REL14_BRTAKEN
:
7238 case R_PPC_REL14_BRNTAKEN
:
7239 t0
= bfd_get_32 (abfd
, hit_addr
);
7242 bfd_put_32 (abfd
, t0
, hit_addr
);
7247 while (branch_fixups
!= NULL
)
7249 struct one_branch_fixup
*f
= branch_fixups
;
7250 branch_fixups
= branch_fixups
->next
;
7255 workaround_change
= FALSE
;
7257 if (htab
->params
->ppc476_workaround
7258 && (!bfd_link_relocatable (link_info
)
7259 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7261 bfd_vma addr
, end_addr
;
7262 unsigned int crossings
;
7263 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7265 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7266 end_addr
= addr
+ trampoff
;
7268 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7271 /* Keep space aligned, to ensure the patch code itself does
7272 not cross a page. Don't decrease size calculated on a
7273 previous pass as otherwise we might never settle on a layout. */
7274 newsize
= 15 - ((end_addr
- 1) & 15);
7275 newsize
+= crossings
* 16;
7276 if (relax_info
->workaround_size
< newsize
)
7278 relax_info
->workaround_size
= newsize
;
7279 workaround_change
= TRUE
;
7281 /* Ensure relocate_section is called. */
7282 isec
->flags
|= SEC_RELOC
;
7284 newsize
= trampoff
+ relax_info
->workaround_size
;
7287 if (htab
->params
->pic_fixup
> 0)
7289 picfixup_size
-= relax_info
->picfixup_size
;
7290 if (picfixup_size
!= 0)
7291 relax_info
->picfixup_size
+= picfixup_size
;
7292 newsize
+= relax_info
->picfixup_size
;
7295 if (changes
!= 0 || picfixup_size
!= 0 || workaround_change
)
7296 isec
->size
= newsize
;
7299 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7301 if (! link_info
->keep_memory
)
7305 /* Cache the symbols for elf_link_input_bfd. */
7306 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7310 if (contents
!= NULL
7311 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7313 if (!changes
&& !link_info
->keep_memory
)
7317 /* Cache the section contents for elf_link_input_bfd. */
7318 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7322 changes
+= picfixup_size
;
7325 /* Append sufficient NOP relocs so we can write out relocation
7326 information for the trampolines. */
7327 Elf_Internal_Shdr
*rel_hdr
;
7328 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7329 * sizeof (*new_relocs
));
7334 memcpy (new_relocs
, internal_relocs
,
7335 isec
->reloc_count
* sizeof (*new_relocs
));
7336 for (ix
= changes
; ix
--;)
7338 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7340 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7342 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7343 free (internal_relocs
);
7344 elf_section_data (isec
)->relocs
= new_relocs
;
7345 isec
->reloc_count
+= changes
;
7346 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7347 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7349 else if (internal_relocs
!= NULL
7350 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7351 free (internal_relocs
);
7353 *again
= changes
!= 0 || workaround_change
;
7357 while (branch_fixups
!= NULL
)
7359 struct one_branch_fixup
*f
= branch_fixups
;
7360 branch_fixups
= branch_fixups
->next
;
7363 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7365 if (contents
!= NULL
7366 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7368 if (internal_relocs
!= NULL
7369 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7370 free (internal_relocs
);
7374 /* What to do when ld finds relocations against symbols defined in
7375 discarded sections. */
7378 ppc_elf_action_discarded (asection
*sec
)
7380 if (strcmp (".fixup", sec
->name
) == 0)
7383 if (strcmp (".got2", sec
->name
) == 0)
7386 return _bfd_elf_default_action_discarded (sec
);
7389 /* Fill in the address for a pointer generated in a linker section. */
7392 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7393 elf_linker_section_t
*lsect
,
7394 struct elf_link_hash_entry
*h
,
7396 const Elf_Internal_Rela
*rel
)
7398 elf_linker_section_pointers_t
*linker_section_ptr
;
7400 BFD_ASSERT (lsect
!= NULL
);
7404 /* Handle global symbol. */
7405 struct ppc_elf_link_hash_entry
*eh
;
7407 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7408 BFD_ASSERT (eh
->elf
.def_regular
);
7409 linker_section_ptr
= eh
->linker_section_pointer
;
7413 /* Handle local symbol. */
7414 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7416 BFD_ASSERT (is_ppc_elf (input_bfd
));
7417 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7418 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7421 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7424 BFD_ASSERT (linker_section_ptr
!= NULL
);
7426 /* Offset will always be a multiple of four, so use the bottom bit
7427 as a "written" flag. */
7428 if ((linker_section_ptr
->offset
& 1) == 0)
7430 bfd_put_32 (lsect
->section
->owner
,
7431 relocation
+ linker_section_ptr
->addend
,
7432 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7433 linker_section_ptr
->offset
+= 1;
7436 relocation
= (lsect
->section
->output_section
->vma
7437 + lsect
->section
->output_offset
7438 + linker_section_ptr
->offset
- 1
7439 - SYM_VAL (lsect
->sym
));
7443 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7444 lsect
->name
, (long) relocation
, (long) relocation
);
7450 #define PPC_LO(v) ((v) & 0xffff)
7451 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7452 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7455 write_glink_stub (struct elf_link_hash_entry
*h
, struct plt_entry
*ent
,
7456 asection
*plt_sec
, unsigned char *p
,
7457 struct bfd_link_info
*info
)
7459 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7460 bfd
*output_bfd
= info
->output_bfd
;
7462 unsigned char *end
= p
+ GLINK_ENTRY_SIZE (htab
, h
);
7465 && h
== htab
->tls_get_addr
7466 && !htab
->params
->no_tls_get_addr_opt
)
7468 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
7470 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
7472 bfd_put_32 (output_bfd
, MR_0_3
, p
);
7474 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
7476 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
7478 bfd_put_32 (output_bfd
, BEQLR
, p
);
7480 bfd_put_32 (output_bfd
, MR_3_0
, p
);
7482 bfd_put_32 (output_bfd
, NOP
, p
);
7486 plt
= ((ent
->plt
.offset
& ~1)
7487 + plt_sec
->output_section
->vma
7488 + plt_sec
->output_offset
);
7490 if (bfd_link_pic (info
))
7494 if (ent
->addend
>= 32768)
7496 + ent
->sec
->output_section
->vma
7497 + ent
->sec
->output_offset
);
7498 else if (htab
->elf
.hgot
!= NULL
)
7499 got
= SYM_VAL (htab
->elf
.hgot
);
7503 if (plt
+ 0x8000 < 0x10000)
7504 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7507 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7509 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7514 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7516 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7519 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7521 bfd_put_32 (output_bfd
, BCTR
, p
);
7525 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7530 /* Return true if symbol is defined statically. */
7533 is_static_defined (struct elf_link_hash_entry
*h
)
7535 return ((h
->root
.type
== bfd_link_hash_defined
7536 || h
->root
.type
== bfd_link_hash_defweak
)
7537 && h
->root
.u
.def
.section
!= NULL
7538 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7541 /* If INSN is an opcode that may be used with an @tls operand, return
7542 the transformed insn for TLS optimisation, otherwise return 0. If
7543 REG is non-zero only match an insn with RB or RA equal to REG. */
7546 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7550 if ((insn
& (0x3f << 26)) != 31 << 26)
7553 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7554 rtra
= insn
& ((1 << 26) - (1 << 16));
7555 else if (((insn
>> 16) & 0x1f) == reg
)
7556 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7560 if ((insn
& (0x3ff << 1)) == 266 << 1)
7563 else if ((insn
& (0x1f << 1)) == 23 << 1
7564 && ((insn
& (0x1f << 6)) < 14 << 6
7565 || ((insn
& (0x1f << 6)) >= 16 << 6
7566 && (insn
& (0x1f << 6)) < 24 << 6)))
7567 /* load and store indexed -> dform. */
7568 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7569 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7570 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7571 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7572 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7574 insn
= (58 << 26) | 2;
7581 /* If INSN is an opcode that may be used with an @tprel operand, return
7582 the transformed insn for an undefined weak symbol, ie. with the
7583 thread pointer REG operand removed. Otherwise return 0. */
7586 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7588 if ((insn
& (0x1f << 16)) == reg
<< 16
7589 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7590 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7591 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7592 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7593 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7594 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7595 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7596 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7597 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7598 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7599 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7600 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7601 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7602 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7603 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7604 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7606 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7607 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7609 insn
&= ~(0x1f << 16);
7611 else if ((insn
& (0x1f << 21)) == reg
<< 21
7612 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7613 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7614 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7616 insn
&= ~(0x1f << 21);
7617 insn
|= (insn
& (0x1f << 16)) << 5;
7618 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7619 insn
-= 2 >> 26; /* convert to ori,oris */
7627 is_insn_ds_form (unsigned int insn
)
7629 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7630 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7631 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7632 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7636 is_insn_dq_form (unsigned int insn
)
7638 return ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
7639 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7640 && (insn
& 3) == 1));
7643 /* The RELOCATE_SECTION function is called by the ELF backend linker
7644 to handle the relocations for a section.
7646 The relocs are always passed as Rela structures; if the section
7647 actually uses Rel structures, the r_addend field will always be
7650 This function is responsible for adjust the section contents as
7651 necessary, and (if using Rela relocs and generating a
7652 relocatable output file) adjusting the reloc addend as
7655 This function does not have to worry about setting the reloc
7656 address or the reloc symbol index.
7658 LOCAL_SYMS is a pointer to the swapped in local symbols.
7660 LOCAL_SECTIONS is an array giving the section in the input file
7661 corresponding to the st_shndx field of each local symbol.
7663 The global hash table entry for the global symbols can be found
7664 via elf_sym_hashes (input_bfd).
7666 When generating relocatable output, this function must handle
7667 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7668 going to be the section symbol corresponding to the output
7669 section, which means that the addend must be adjusted
7673 ppc_elf_relocate_section (bfd
*output_bfd
,
7674 struct bfd_link_info
*info
,
7676 asection
*input_section
,
7678 Elf_Internal_Rela
*relocs
,
7679 Elf_Internal_Sym
*local_syms
,
7680 asection
**local_sections
)
7682 Elf_Internal_Shdr
*symtab_hdr
;
7683 struct elf_link_hash_entry
**sym_hashes
;
7684 struct ppc_elf_link_hash_table
*htab
;
7685 Elf_Internal_Rela
*rel
;
7686 Elf_Internal_Rela
*wrel
;
7687 Elf_Internal_Rela
*relend
;
7688 Elf_Internal_Rela outrel
;
7690 bfd_vma
*local_got_offsets
;
7691 bfd_boolean ret
= TRUE
;
7692 bfd_vma d_offset
= (bfd_big_endian (input_bfd
) ? 2 : 0);
7693 bfd_boolean is_vxworks_tls
;
7694 unsigned int picfixup_size
= 0;
7695 struct ppc_elf_relax_info
*relax_info
= NULL
;
7698 _bfd_error_handler ("ppc_elf_relocate_section called for %pB section %pA, "
7699 "%ld relocations%s",
7700 input_bfd
, input_section
,
7701 (long) input_section
->reloc_count
,
7702 (bfd_link_relocatable (info
)) ? " (relocatable)" : "");
7705 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7707 /* Initialize howto table if not already done. */
7708 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7709 ppc_elf_howto_init ();
7711 htab
= ppc_elf_hash_table (info
);
7712 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7713 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7714 sym_hashes
= elf_sym_hashes (input_bfd
);
7715 /* We have to handle relocations in vxworks .tls_vars sections
7716 specially, because the dynamic loader is 'weird'. */
7717 is_vxworks_tls
= (htab
->is_vxworks
&& bfd_link_pic (info
)
7718 && !strcmp (input_section
->output_section
->name
,
7720 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
)
7721 relax_info
= elf_section_data (input_section
)->sec_info
;
7722 rel
= wrel
= relocs
;
7723 relend
= relocs
+ input_section
->reloc_count
;
7724 for (; rel
< relend
; wrel
++, rel
++)
7726 enum elf_ppc_reloc_type r_type
;
7728 bfd_reloc_status_type r
;
7729 Elf_Internal_Sym
*sym
;
7731 struct elf_link_hash_entry
*h
;
7732 const char *sym_name
;
7733 reloc_howto_type
*howto
;
7734 unsigned long r_symndx
;
7736 bfd_vma branch_bit
, from
;
7737 bfd_boolean unresolved_reloc
;
7739 unsigned int tls_type
, tls_mask
, tls_gd
;
7740 struct plt_entry
**ifunc
;
7741 struct reloc_howto_struct alt_howto
;
7744 r_type
= ELF32_R_TYPE (rel
->r_info
);
7748 unresolved_reloc
= FALSE
;
7750 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7752 if (r_symndx
< symtab_hdr
->sh_info
)
7754 sym
= local_syms
+ r_symndx
;
7755 sec
= local_sections
[r_symndx
];
7756 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7758 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7762 bfd_boolean ignored
;
7764 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7765 r_symndx
, symtab_hdr
, sym_hashes
,
7767 unresolved_reloc
, warned
, ignored
);
7769 sym_name
= h
->root
.root
.string
;
7772 if (sec
!= NULL
&& discarded_section (sec
))
7774 /* For relocs against symbols from removed linkonce sections,
7775 or sections discarded by a linker script, we just want the
7776 section contents zeroed. Avoid any special processing. */
7778 if (r_type
< R_PPC_max
)
7779 howto
= ppc_elf_howto_table
[r_type
];
7781 _bfd_clear_contents (howto
, input_bfd
, input_section
,
7782 contents
+ rel
->r_offset
);
7783 wrel
->r_offset
= rel
->r_offset
;
7787 /* For ld -r, remove relocations in debug sections against
7788 symbols defined in discarded sections. Not done for
7789 non-debug to preserve relocs in .eh_frame which the
7790 eh_frame editing code expects to be present. */
7791 if (bfd_link_relocatable (info
)
7792 && (input_section
->flags
& SEC_DEBUGGING
))
7798 if (bfd_link_relocatable (info
))
7801 && r_type
== R_PPC_PLTREL24
7802 && rel
->r_addend
!= 0)
7804 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7805 addend specifies the GOT pointer offset within .got2. */
7806 rel
->r_addend
+= got2
->output_offset
;
7808 if (r_type
!= R_PPC_RELAX_PLT
7809 && r_type
!= R_PPC_RELAX_PLTREL24
7810 && r_type
!= R_PPC_RELAX
)
7814 /* TLS optimizations. Replace instruction sequences and relocs
7815 based on information we collected in tls_optimize. We edit
7816 RELOCS so that --emit-relocs will output something sensible
7817 for the final instruction stream. */
7821 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7822 else if (local_got_offsets
!= NULL
)
7824 struct plt_entry
**local_plt
;
7827 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7828 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7829 tls_mask
= lgot_masks
[r_symndx
];
7832 /* Ensure reloc mapping code below stays sane. */
7833 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7834 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7835 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7836 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7837 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7838 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7839 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7840 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
7847 case R_PPC_GOT_TPREL16
:
7848 case R_PPC_GOT_TPREL16_LO
:
7849 if ((tls_mask
& TLS_TLS
) != 0
7850 && (tls_mask
& TLS_TPREL
) == 0)
7854 insn
= bfd_get_32 (input_bfd
,
7855 contents
+ rel
->r_offset
- d_offset
);
7857 insn
|= 0x3c020000; /* addis 0,2,0 */
7858 bfd_put_32 (input_bfd
, insn
,
7859 contents
+ rel
->r_offset
- d_offset
);
7860 r_type
= R_PPC_TPREL16_HA
;
7861 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7866 if ((tls_mask
& TLS_TLS
) != 0
7867 && (tls_mask
& TLS_TPREL
) == 0)
7871 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7872 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
7875 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
7876 r_type
= R_PPC_TPREL16_LO
;
7877 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7879 /* Was PPC_TLS which sits on insn boundary, now
7880 PPC_TPREL16_LO which is at low-order half-word. */
7881 rel
->r_offset
+= d_offset
;
7885 case R_PPC_GOT_TLSGD16_HI
:
7886 case R_PPC_GOT_TLSGD16_HA
:
7887 tls_gd
= TLS_TPRELGD
;
7888 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7892 case R_PPC_GOT_TLSLD16_HI
:
7893 case R_PPC_GOT_TLSLD16_HA
:
7894 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7897 if ((tls_mask
& tls_gd
) != 0)
7898 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7899 + R_PPC_GOT_TPREL16
);
7902 rel
->r_offset
-= d_offset
;
7903 bfd_put_32 (input_bfd
, NOP
, contents
+ rel
->r_offset
);
7904 r_type
= R_PPC_NONE
;
7906 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7910 case R_PPC_GOT_TLSGD16
:
7911 case R_PPC_GOT_TLSGD16_LO
:
7912 tls_gd
= TLS_TPRELGD
;
7913 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7917 case R_PPC_GOT_TLSLD16
:
7918 case R_PPC_GOT_TLSLD16_LO
:
7919 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7921 unsigned int insn1
, insn2
;
7925 offset
= (bfd_vma
) -1;
7926 /* If not using the newer R_PPC_TLSGD/LD to mark
7927 __tls_get_addr calls, we must trust that the call
7928 stays with its arg setup insns, ie. that the next
7929 reloc is the __tls_get_addr call associated with
7930 the current reloc. Edit both insns. */
7931 if (input_section
->has_tls_get_addr_call
7933 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
7934 htab
->tls_get_addr
))
7935 offset
= rel
[1].r_offset
;
7936 /* We read the low GOT_TLS insn because we need to keep
7937 the destination reg. It may be something other than
7938 the usual r3, and moved to r3 before the call by
7939 intervening code. */
7940 insn1
= bfd_get_32 (input_bfd
,
7941 contents
+ rel
->r_offset
- d_offset
);
7942 if ((tls_mask
& tls_gd
) != 0)
7945 insn1
&= (0x1f << 21) | (0x1f << 16);
7946 insn1
|= 32 << 26; /* lwz */
7947 if (offset
!= (bfd_vma
) -1)
7949 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
7950 insn2
= 0x7c631214; /* add 3,3,2 */
7951 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
7953 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7954 + R_PPC_GOT_TPREL16
);
7955 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7960 insn1
&= 0x1f << 21;
7961 insn1
|= 0x3c020000; /* addis r,2,0 */
7964 /* Was an LD reloc. */
7966 r_symndx
< symtab_hdr
->sh_info
;
7968 if (local_sections
[r_symndx
] == sec
)
7970 if (r_symndx
>= symtab_hdr
->sh_info
)
7971 r_symndx
= STN_UNDEF
;
7972 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
7973 if (r_symndx
!= STN_UNDEF
)
7974 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
7975 + sec
->output_offset
7976 + sec
->output_section
->vma
);
7978 r_type
= R_PPC_TPREL16_HA
;
7979 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7980 if (offset
!= (bfd_vma
) -1)
7982 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
7983 rel
[1].r_offset
= offset
+ d_offset
;
7984 rel
[1].r_addend
= rel
->r_addend
;
7985 insn2
= 0x38630000; /* addi 3,3,0 */
7986 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
7989 bfd_put_32 (input_bfd
, insn1
,
7990 contents
+ rel
->r_offset
- d_offset
);
7993 /* We changed the symbol on an LD reloc. Start over
7994 in order to get h, sym, sec etc. right. */
8001 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
8004 bfd_vma offset
= rel
->r_offset
;
8006 if ((tls_mask
& TLS_TPRELGD
) != 0)
8009 r_type
= R_PPC_NONE
;
8010 insn2
= 0x7c631214; /* add 3,3,2 */
8015 r_type
= R_PPC_TPREL16_LO
;
8016 rel
->r_offset
+= d_offset
;
8017 insn2
= 0x38630000; /* addi 3,3,0 */
8019 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8020 bfd_put_32 (input_bfd
, insn2
, contents
+ offset
);
8021 /* Zap the reloc on the _tls_get_addr call too. */
8022 BFD_ASSERT (offset
== rel
[1].r_offset
);
8023 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8028 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
8033 r_symndx
< symtab_hdr
->sh_info
;
8035 if (local_sections
[r_symndx
] == sec
)
8037 if (r_symndx
>= symtab_hdr
->sh_info
)
8038 r_symndx
= STN_UNDEF
;
8039 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8040 if (r_symndx
!= STN_UNDEF
)
8041 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8042 + sec
->output_offset
8043 + sec
->output_section
->vma
);
8045 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8046 rel
->r_offset
+= d_offset
;
8047 insn2
= 0x38630000; /* addi 3,3,0 */
8048 bfd_put_32 (input_bfd
, insn2
,
8049 contents
+ rel
->r_offset
- d_offset
);
8050 /* Zap the reloc on the _tls_get_addr call too. */
8051 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
8052 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8058 /* Handle other relocations that tweak non-addend part of insn. */
8065 /* Branch taken prediction relocations. */
8066 case R_PPC_ADDR14_BRTAKEN
:
8067 case R_PPC_REL14_BRTAKEN
:
8068 branch_bit
= BRANCH_PREDICT_BIT
;
8071 /* Branch not taken prediction relocations. */
8072 case R_PPC_ADDR14_BRNTAKEN
:
8073 case R_PPC_REL14_BRNTAKEN
:
8077 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
8078 insn
&= ~BRANCH_PREDICT_BIT
;
8081 from
= (rel
->r_offset
8082 + input_section
->output_offset
8083 + input_section
->output_section
->vma
);
8085 /* Invert 'y' bit if not the default. */
8086 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
8087 insn
^= BRANCH_PREDICT_BIT
;
8089 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
8094 if (ELIMINATE_COPY_RELOCS
8098 && ppc_elf_hash_entry (h
)->has_addr16_ha
8099 && ppc_elf_hash_entry (h
)->has_addr16_lo
8100 && htab
->params
->pic_fixup
> 0)
8102 /* Convert lis;addi or lis;load/store accessing a protected
8103 variable defined in a shared library to PIC. */
8106 if (r_type
== R_PPC_ADDR16_HA
)
8108 insn
= bfd_get_32 (input_bfd
,
8109 contents
+ rel
->r_offset
- d_offset
);
8110 if ((insn
& (0x3f << 26)) == (15u << 26)
8111 && (insn
& (0x1f << 16)) == 0 /* lis */)
8117 p
= (contents
+ input_section
->size
8118 - relax_info
->workaround_size
8119 - relax_info
->picfixup_size
8121 off
= (p
- contents
) - (rel
->r_offset
- d_offset
);
8122 if (off
> 0x1fffffc || (off
& 3) != 0)
8123 info
->callbacks
->einfo
8124 (_("%H: fixup branch overflow\n"),
8125 input_bfd
, input_section
, rel
->r_offset
);
8127 bfd_put_32 (input_bfd
, B
| off
,
8128 contents
+ rel
->r_offset
- d_offset
);
8129 got_addr
= (htab
->elf
.sgot
->output_section
->vma
8130 + htab
->elf
.sgot
->output_offset
8131 + (h
->got
.offset
& ~1));
8132 wrel
->r_offset
= (p
- contents
) + d_offset
;
8133 wrel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_HA
);
8134 wrel
->r_addend
= got_addr
;
8136 insn
|= ((unsigned int) (got_addr
+ 0x8000) >> 16) & 0xffff;
8137 bfd_put_32 (input_bfd
, insn
, p
);
8139 /* Convert lis to lwz, loading address from GOT. */
8141 insn
^= (32u ^ 15u) << 26;
8142 insn
|= (insn
& (0x1f << 21)) >> 5;
8143 insn
|= got_addr
& 0xffff;
8144 bfd_put_32 (input_bfd
, insn
, p
+ 4);
8146 bfd_put_32 (input_bfd
, B
| ((-4 - off
) & 0x3ffffff), p
+ 8);
8147 picfixup_size
+= 12;
8149 /* Use one of the spare relocs, so --emit-relocs
8150 output is reasonable. */
8151 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8153 rel
->r_offset
= wrel
[-1].r_offset
+ 4;
8154 rel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_LO
);
8155 rel
->r_addend
= wrel
[-1].r_addend
;
8157 /* Continue on as if we had a got reloc, to output
8159 r_type
= R_PPC_GOT16_LO
;
8163 /* xgettext:c-format */
8164 (_("%pB(%pA+%#" PRIx64
"): error: "
8165 "%s with unexpected instruction %#x"),
8166 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
8167 "R_PPC_ADDR16_HA", insn
);
8169 else if (r_type
== R_PPC_ADDR16_LO
)
8171 insn
= bfd_get_32 (input_bfd
,
8172 contents
+ rel
->r_offset
- d_offset
);
8173 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8174 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8175 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8176 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8177 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8178 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8179 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8180 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8181 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8182 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8183 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8184 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8185 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8186 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8187 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8189 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8190 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
8192 /* Arrange to apply the reloc addend, if any. */
8194 unresolved_reloc
= FALSE
;
8195 rel
->r_info
= ELF32_R_INFO (0, r_type
);
8199 /* xgettext:c-format */
8200 (_("%pB(%pA+%#" PRIx64
"): error: "
8201 "%s with unexpected instruction %#x"),
8202 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
8203 "R_PPC_ADDR16_LO", insn
);
8208 if (!htab
->is_vxworks
)
8210 struct plt_entry
*ent
;
8214 if (h
->type
== STT_GNU_IFUNC
)
8215 ifunc
= &h
->plt
.plist
;
8217 else if (local_got_offsets
!= NULL
8218 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8220 struct plt_entry
**local_plt
;
8222 local_plt
= (struct plt_entry
**) (local_got_offsets
8223 + symtab_hdr
->sh_info
);
8224 ifunc
= local_plt
+ r_symndx
;
8229 && (!bfd_link_pic (info
)
8230 || is_branch_reloc (r_type
)))
8233 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
8234 addend
= rel
->r_addend
;
8235 ent
= find_plt_ent (ifunc
, got2
, addend
);
8239 if (bfd_link_pic (info
)
8241 && htab
->plt_type
!= PLT_NEW
8242 && (!htab
->elf
.dynamic_sections_created
8244 || h
->dynindx
== -1))
8246 /* Uh oh, we are going to create a pic glink stub
8247 for an ifunc (here for h == NULL and later in
8248 finish_dynamic_symbol for h != NULL), and
8249 apparently are using code compiled with
8250 -mbss-plt. The difficulty is that -mbss-plt code
8251 gives no indication via a magic PLTREL24 addend
8252 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8253 is pointing into a .got2 section (and how far
8255 info
->callbacks
->einfo
8256 /* xgettext:c-format */
8257 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8258 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
8260 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
8262 Elf_Internal_Rela rela
;
8265 rela
.r_offset
= (htab
->elf
.iplt
->output_section
->vma
8266 + htab
->elf
.iplt
->output_offset
8268 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8269 rela
.r_addend
= relocation
;
8270 loc
= htab
->elf
.irelplt
->contents
;
8271 loc
+= (htab
->elf
.irelplt
->reloc_count
++
8272 * sizeof (Elf32_External_Rela
));
8273 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8274 htab
->local_ifunc_resolver
= 1;
8276 ent
->plt
.offset
|= 1;
8278 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
8280 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
8281 + ent
->glink_offset
);
8283 write_glink_stub (NULL
, ent
, htab
->elf
.iplt
, p
, info
);
8284 ent
->glink_offset
|= 1;
8287 unresolved_reloc
= FALSE
;
8288 if (htab
->plt_type
== PLT_NEW
8289 || !htab
->elf
.dynamic_sections_created
8291 || h
->dynindx
== -1)
8292 relocation
= (htab
->glink
->output_section
->vma
8293 + htab
->glink
->output_offset
8294 + (ent
->glink_offset
& ~1));
8296 relocation
= (htab
->elf
.splt
->output_section
->vma
8297 + htab
->elf
.splt
->output_offset
8302 addend
= rel
->r_addend
;
8304 if (r_type
< R_PPC_max
)
8305 howto
= ppc_elf_howto_table
[r_type
];
8312 case R_PPC_TPREL16_HA
:
8313 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
8315 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
8316 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8317 if ((insn
& ((0x3f << 26) | 0x1f << 16))
8318 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8319 /* xgettext:c-format */
8320 info
->callbacks
->minfo
8321 (_("%H: warning: %s unexpected insn %#x.\n"),
8322 input_bfd
, input_section
, rel
->r_offset
, howto
->name
, insn
);
8324 bfd_put_32 (input_bfd
, NOP
, p
);
8328 case R_PPC_TPREL16_LO
:
8329 if (htab
->do_tls_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
8331 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
8332 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8333 insn
&= ~(0x1f << 16);
8335 bfd_put_32 (input_bfd
, insn
, p
);
8344 info
->callbacks
->einfo
8345 /* xgettext:c-format */
8346 (_("%P: %pB: unknown relocation type %d for symbol %s\n"),
8347 input_bfd
, (int) r_type
, sym_name
);
8349 bfd_set_error (bfd_error_bad_value
);
8357 case R_PPC_EMB_MRKREF
:
8358 case R_PPC_GNU_VTINHERIT
:
8359 case R_PPC_GNU_VTENTRY
:
8362 /* GOT16 relocations. Like an ADDR16 using the symbol's
8363 address in the GOT as relocation value instead of the
8364 symbol's value itself. Also, create a GOT entry for the
8365 symbol and put the symbol value there. */
8366 case R_PPC_GOT_TLSGD16
:
8367 case R_PPC_GOT_TLSGD16_LO
:
8368 case R_PPC_GOT_TLSGD16_HI
:
8369 case R_PPC_GOT_TLSGD16_HA
:
8370 tls_type
= TLS_TLS
| TLS_GD
;
8373 case R_PPC_GOT_TLSLD16
:
8374 case R_PPC_GOT_TLSLD16_LO
:
8375 case R_PPC_GOT_TLSLD16_HI
:
8376 case R_PPC_GOT_TLSLD16_HA
:
8377 tls_type
= TLS_TLS
| TLS_LD
;
8380 case R_PPC_GOT_TPREL16
:
8381 case R_PPC_GOT_TPREL16_LO
:
8382 case R_PPC_GOT_TPREL16_HI
:
8383 case R_PPC_GOT_TPREL16_HA
:
8384 tls_type
= TLS_TLS
| TLS_TPREL
;
8387 case R_PPC_GOT_DTPREL16
:
8388 case R_PPC_GOT_DTPREL16_LO
:
8389 case R_PPC_GOT_DTPREL16_HI
:
8390 case R_PPC_GOT_DTPREL16_HA
:
8391 tls_type
= TLS_TLS
| TLS_DTPREL
;
8395 case R_PPC_GOT16_LO
:
8396 case R_PPC_GOT16_HI
:
8397 case R_PPC_GOT16_HA
:
8401 /* Relocation is to the entry for this symbol in the global
8407 if (htab
->elf
.sgot
== NULL
)
8411 if (tls_type
== (TLS_TLS
| TLS_LD
)
8413 || !h
->def_dynamic
))
8414 offp
= &htab
->tlsld_got
.offset
;
8417 if (!htab
->elf
.dynamic_sections_created
8419 || SYMBOL_REFERENCES_LOCAL (info
, h
)
8420 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8421 /* This is actually a static link, or it is a
8422 -Bsymbolic link and the symbol is defined
8423 locally, or the symbol was forced to be local
8424 because of a version file. */
8429 unresolved_reloc
= FALSE
;
8431 offp
= &h
->got
.offset
;
8435 if (local_got_offsets
== NULL
)
8437 offp
= &local_got_offsets
[r_symndx
];
8440 /* The offset must always be a multiple of 4. We use the
8441 least significant bit to record whether we have already
8442 processed this entry. */
8448 unsigned int tls_m
= (tls_mask
8449 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8450 | TLS_TPREL
| TLS_TPRELGD
));
8452 if (offp
== &htab
->tlsld_got
.offset
)
8458 /* We might have multiple got entries for this sym.
8459 Initialize them all. */
8464 if ((tls_m
& TLS_LD
) != 0)
8466 tls_ty
= TLS_TLS
| TLS_LD
;
8469 else if ((tls_m
& TLS_GD
) != 0)
8471 tls_ty
= TLS_TLS
| TLS_GD
;
8474 else if ((tls_m
& TLS_DTPREL
) != 0)
8476 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8477 tls_m
&= ~TLS_DTPREL
;
8479 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8481 tls_ty
= TLS_TLS
| TLS_TPREL
;
8485 /* Generate relocs for the dynamic linker. */
8487 || (bfd_link_pic (info
)
8489 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
)
8490 || offp
== &htab
->tlsld_got
.offset
)
8491 && !(tls_ty
== (TLS_TLS
| TLS_TPREL
)
8492 && bfd_link_executable (info
)
8493 && SYMBOL_REFERENCES_LOCAL (info
, h
))))
8495 asection
*rsec
= htab
->elf
.srelgot
;
8500 rsec
= htab
->elf
.irelplt
;
8502 htab
->local_ifunc_resolver
= 1;
8503 else if (is_static_defined (h
))
8504 htab
->maybe_local_ifunc_resolver
= 1;
8506 outrel
.r_offset
= (htab
->elf
.sgot
->output_section
->vma
8507 + htab
->elf
.sgot
->output_offset
8509 outrel
.r_addend
= 0;
8510 if (tls_ty
& (TLS_LD
| TLS_GD
))
8512 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8513 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8515 loc
= rsec
->contents
;
8516 loc
+= (rsec
->reloc_count
++
8517 * sizeof (Elf32_External_Rela
));
8518 bfd_elf32_swap_reloca_out (output_bfd
,
8520 outrel
.r_offset
+= 4;
8522 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8525 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8526 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8527 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8528 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8530 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8531 else if (ifunc
!= NULL
)
8532 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8534 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8535 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8537 outrel
.r_addend
+= relocation
;
8538 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8540 if (htab
->elf
.tls_sec
== NULL
)
8541 outrel
.r_addend
= 0;
8543 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8546 loc
= rsec
->contents
;
8547 loc
+= (rsec
->reloc_count
++
8548 * sizeof (Elf32_External_Rela
));
8549 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8552 /* Init the .got section contents if we're not
8553 emitting a reloc. */
8556 bfd_vma value
= relocation
;
8560 if (htab
->elf
.tls_sec
== NULL
)
8564 if (tls_ty
& TLS_LD
)
8567 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8568 if (tls_ty
& TLS_TPREL
)
8569 value
+= DTP_OFFSET
- TP_OFFSET
;
8572 if (tls_ty
& (TLS_LD
| TLS_GD
))
8574 bfd_put_32 (input_bfd
, value
,
8575 htab
->elf
.sgot
->contents
+ off
+ 4);
8579 bfd_put_32 (input_bfd
, value
,
8580 htab
->elf
.sgot
->contents
+ off
);
8584 if (tls_ty
& (TLS_LD
| TLS_GD
))
8593 if (off
>= (bfd_vma
) -2)
8596 if ((tls_type
& TLS_TLS
) != 0)
8598 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8600 if ((tls_mask
& TLS_LD
) != 0
8602 || !h
->def_dynamic
))
8604 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8606 if ((tls_mask
& TLS_GD
) != 0)
8608 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8610 if ((tls_mask
& TLS_DTPREL
) != 0)
8617 /* If here for a picfixup, we're done. */
8618 if (r_type
!= ELF32_R_TYPE (rel
->r_info
))
8621 relocation
= (htab
->elf
.sgot
->output_section
->vma
8622 + htab
->elf
.sgot
->output_offset
8624 - SYM_VAL (htab
->elf
.hgot
));
8626 /* Addends on got relocations don't make much sense.
8627 x+off@got is actually x@got+off, and since the got is
8628 generated by a hash table traversal, the value in the
8629 got at entry m+n bears little relation to the entry m. */
8631 info
->callbacks
->einfo
8632 /* xgettext:c-format */
8633 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8634 input_bfd
, input_section
, rel
->r_offset
,
8640 /* Relocations that need no special processing. */
8641 case R_PPC_LOCAL24PC
:
8642 /* It makes no sense to point a local relocation
8643 at a symbol not in this object. */
8644 if (unresolved_reloc
)
8646 (*info
->callbacks
->undefined_symbol
) (info
,
8647 h
->root
.root
.string
,
8654 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
&& bfd_link_pic (info
))
8656 /* @local on an ifunc does not really make sense since
8657 the ifunc resolver can take you anywhere. More
8658 seriously, calls to ifuncs must go through a plt call
8659 stub, and for pic the plt call stubs uses r30 to
8660 access the PLT. The problem is that a call that is
8661 local won't have the +32k reloc addend trick marking
8662 -fPIC code, so the linker won't know whether r30 is
8663 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8664 /* xgettext:c-format */
8665 info
->callbacks
->einfo (_("%X%H: @local call to ifunc %s\n"),
8666 input_bfd
, input_section
, rel
->r_offset
,
8667 h
->root
.root
.string
);
8671 case R_PPC_DTPREL16
:
8672 case R_PPC_DTPREL16_LO
:
8673 case R_PPC_DTPREL16_HI
:
8674 case R_PPC_DTPREL16_HA
:
8675 if (htab
->elf
.tls_sec
!= NULL
)
8676 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8679 /* Relocations that may need to be propagated if this is a shared
8682 case R_PPC_TPREL16_LO
:
8683 case R_PPC_TPREL16_HI
:
8684 case R_PPC_TPREL16_HA
:
8686 && h
->root
.type
== bfd_link_hash_undefweak
8687 && h
->dynindx
== -1)
8689 /* Make this relocation against an undefined weak symbol
8690 resolve to zero. This is really just a tweak, since
8691 code using weak externs ought to check that they are
8692 defined before using them. */
8693 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8694 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
8695 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8697 bfd_put_32 (input_bfd
, insn
, p
);
8700 if (htab
->elf
.tls_sec
!= NULL
)
8701 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8702 /* The TPREL16 relocs shouldn't really be used in shared
8703 libs or with non-local symbols as that will result in
8704 DT_TEXTREL being set, but support them anyway. */
8708 if (htab
->elf
.tls_sec
!= NULL
)
8709 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8712 case R_PPC_DTPREL32
:
8713 if (htab
->elf
.tls_sec
!= NULL
)
8714 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8717 case R_PPC_DTPMOD32
:
8723 case R_PPC_REL16_LO
:
8724 case R_PPC_REL16_HI
:
8725 case R_PPC_REL16_HA
:
8726 case R_PPC_REL16DX_HA
:
8730 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8736 case R_PPC_ADDR16_LO
:
8737 case R_PPC_ADDR16_HI
:
8738 case R_PPC_ADDR16_HA
:
8743 case R_PPC_VLE_REL8
:
8744 case R_PPC_VLE_REL15
:
8745 case R_PPC_VLE_REL24
:
8748 case R_PPC_REL14_BRTAKEN
:
8749 case R_PPC_REL14_BRNTAKEN
:
8750 /* If these relocations are not to a named symbol, they can be
8751 handled right here, no need to bother the dynamic linker. */
8752 if (SYMBOL_CALLS_LOCAL (info
, h
)
8753 || h
== htab
->elf
.hgot
)
8759 case R_PPC_ADDR14_BRTAKEN
:
8760 case R_PPC_ADDR14_BRNTAKEN
:
8761 if (h
!= NULL
&& !bfd_link_pic (info
))
8766 if ((input_section
->flags
& SEC_ALLOC
) == 0
8770 if (bfd_link_pic (info
)
8772 || ppc_elf_hash_entry (h
)->dyn_relocs
!= NULL
)
8773 && ((h
!= NULL
&& pc_dynrelocs (h
))
8774 || must_be_dyn_reloc (info
, r_type
)))
8776 && ppc_elf_hash_entry (h
)->dyn_relocs
!= NULL
))
8784 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8785 "create relocation for %s\n",
8786 (h
&& h
->root
.root
.string
8787 ? h
->root
.root
.string
: "<unknown>"));
8790 /* When generating a shared object, these relocations
8791 are copied into the output file to be resolved at run
8794 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8797 if (outrel
.r_offset
== (bfd_vma
) -1
8798 || outrel
.r_offset
== (bfd_vma
) -2)
8799 skip
= (int) outrel
.r_offset
;
8800 outrel
.r_offset
+= (input_section
->output_section
->vma
8801 + input_section
->output_offset
);
8804 memset (&outrel
, 0, sizeof outrel
);
8805 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
8808 BFD_ASSERT (indx
!= -1);
8809 unresolved_reloc
= FALSE
;
8810 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8811 outrel
.r_addend
= rel
->r_addend
;
8815 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8817 if (r_type
!= R_PPC_ADDR32
)
8821 /* If we get here when building a static
8822 executable, then the libc startup function
8823 responsible for applying indirect function
8824 relocations is going to complain about
8826 If we get here when building a dynamic
8827 executable, it will be because we have
8828 a text relocation. The dynamic loader
8829 will set the text segment writable and
8830 non-executable to apply text relocations.
8831 So we'll segfault when trying to run the
8832 indirection function to resolve the reloc. */
8833 info
->callbacks
->einfo
8834 /* xgettext:c-format */
8835 (_("%H: relocation %s for indirect "
8836 "function %s unsupported\n"),
8837 input_bfd
, input_section
, rel
->r_offset
,
8842 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8844 else if (sec
== NULL
|| sec
->owner
== NULL
)
8846 bfd_set_error (bfd_error_bad_value
);
8853 /* We are turning this relocation into one
8854 against a section symbol. It would be
8855 proper to subtract the symbol's value,
8856 osec->vma, from the emitted reloc addend,
8857 but ld.so expects buggy relocs.
8858 FIXME: Why not always use a zero index? */
8859 osec
= sec
->output_section
;
8860 indx
= elf_section_data (osec
)->dynindx
;
8863 osec
= htab
->elf
.text_index_section
;
8864 indx
= elf_section_data (osec
)->dynindx
;
8866 BFD_ASSERT (indx
!= 0);
8869 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8870 indx
, osec
->name
, osec
->flags
,
8871 h
->root
.root
.string
);
8875 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8877 else if (ifunc
!= NULL
)
8878 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8880 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8883 sreloc
= elf_section_data (input_section
)->sreloc
;
8886 sreloc
= htab
->elf
.irelplt
;
8888 htab
->local_ifunc_resolver
= 1;
8889 else if (is_static_defined (h
))
8890 htab
->maybe_local_ifunc_resolver
= 1;
8895 loc
= sreloc
->contents
;
8896 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8897 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8902 /* This reloc will be computed at runtime. Clear the memory
8903 so that it contains a predictable value for prelink. */
8906 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
8913 case R_PPC_RELAX_PLT
:
8914 case R_PPC_RELAX_PLTREL24
:
8917 struct plt_entry
*ent
;
8918 bfd_vma got2_addend
= 0;
8920 if (r_type
== R_PPC_RELAX_PLTREL24
)
8922 if (bfd_link_pic (info
))
8923 got2_addend
= addend
;
8926 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
8927 if (htab
->plt_type
== PLT_NEW
)
8928 relocation
= (htab
->glink
->output_section
->vma
8929 + htab
->glink
->output_offset
8930 + ent
->glink_offset
);
8932 relocation
= (htab
->elf
.splt
->output_section
->vma
8933 + htab
->elf
.splt
->output_offset
8942 size_t insn_offset
= rel
->r_offset
;
8945 if (bfd_link_pic (info
))
8947 relocation
-= (input_section
->output_section
->vma
8948 + input_section
->output_offset
8949 + rel
->r_offset
- 4);
8950 stub
= shared_stub_entry
;
8951 bfd_put_32 (input_bfd
, stub
[0], contents
+ insn_offset
- 12);
8952 bfd_put_32 (input_bfd
, stub
[1], contents
+ insn_offset
- 8);
8953 bfd_put_32 (input_bfd
, stub
[2], contents
+ insn_offset
- 4);
8955 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
8960 size
= ARRAY_SIZE (stub_entry
);
8963 relocation
+= addend
;
8964 if (bfd_link_relocatable (info
))
8967 /* First insn is HA, second is LO. */
8969 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
8970 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8974 insn
|= relocation
& 0xffff;
8975 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8983 bfd_put_32 (input_bfd
, insn
, contents
+ insn_offset
);
8987 /* Rewrite the reloc and convert one of the trailing nop
8988 relocs to describe this relocation. */
8989 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
8990 /* The relocs are at the bottom 2 bytes */
8991 wrel
->r_offset
= rel
->r_offset
+ d_offset
;
8992 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
8993 wrel
->r_addend
= rel
->r_addend
;
8994 memmove (wrel
+ 1, wrel
, (relend
- wrel
- 1) * sizeof (*wrel
));
8996 wrel
->r_offset
+= 4;
8997 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
9001 /* Indirect .sdata relocation. */
9002 case R_PPC_EMB_SDAI16
:
9003 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
9004 if (!is_static_defined (htab
->sdata
[0].sym
))
9006 unresolved_reloc
= TRUE
;
9010 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
9011 h
, relocation
, rel
);
9015 /* Indirect .sdata2 relocation. */
9016 case R_PPC_EMB_SDA2I16
:
9017 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
9018 if (!is_static_defined (htab
->sdata
[1].sym
))
9020 unresolved_reloc
= TRUE
;
9024 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
9025 h
, relocation
, rel
);
9029 /* Handle the TOC16 reloc. We want to use the offset within the .got
9030 section, not the actual VMA. This is appropriate when generating
9031 an embedded ELF object, for which the .got section acts like the
9032 AIX .toc section. */
9033 case R_PPC_TOC16
: /* phony GOT16 relocations */
9034 if (sec
== NULL
|| sec
->output_section
== NULL
)
9036 unresolved_reloc
= TRUE
;
9039 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
9041 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
9044 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
9047 case R_PPC_PLTREL24
:
9048 if (h
!= NULL
&& ifunc
== NULL
)
9050 struct plt_entry
*ent
;
9052 ent
= find_plt_ent (&h
->plt
.plist
, got2
,
9053 bfd_link_pic (info
) ? addend
: 0);
9055 || htab
->elf
.splt
== NULL
)
9057 /* We didn't make a PLT entry for this symbol. This
9058 happens when statically linking PIC code, or when
9059 using -Bsymbolic. */
9063 /* Relocation is to the entry for this symbol in the
9064 procedure linkage table. */
9065 unresolved_reloc
= FALSE
;
9066 if (htab
->plt_type
== PLT_NEW
)
9067 relocation
= (htab
->glink
->output_section
->vma
9068 + htab
->glink
->output_offset
9069 + ent
->glink_offset
);
9071 relocation
= (htab
->elf
.splt
->output_section
->vma
9072 + htab
->elf
.splt
->output_offset
9077 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9078 addend specifies the GOT pointer offset within .got2.
9079 Don't apply it to the relocation field. */
9083 /* Relocate against _SDA_BASE_. */
9084 case R_PPC_SDAREL16
:
9087 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
9090 || sec
->output_section
== NULL
9091 || !is_static_defined (sda
))
9093 unresolved_reloc
= TRUE
;
9096 addend
-= SYM_VAL (sda
);
9098 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9099 if (!(strcmp (name
, ".sdata") == 0
9100 || strcmp (name
, ".sbss") == 0))
9102 info
->callbacks
->einfo
9103 /* xgettext:c-format */
9104 (_("%P: %pB: the target (%s) of a %s relocation is "
9105 "in the wrong output section (%s)\n"),
9114 /* Relocate against _SDA2_BASE_. */
9115 case R_PPC_EMB_SDA2REL
:
9118 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
9121 || sec
->output_section
== NULL
9122 || !is_static_defined (sda
))
9124 unresolved_reloc
= TRUE
;
9127 addend
-= SYM_VAL (sda
);
9129 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9130 if (!(strcmp (name
, ".sdata2") == 0
9131 || strcmp (name
, ".sbss2") == 0))
9133 info
->callbacks
->einfo
9134 /* xgettext:c-format */
9135 (_("%P: %pB: the target (%s) of a %s relocation is "
9136 "in the wrong output section (%s)\n"),
9145 case R_PPC_VLE_LO16A
:
9146 relocation
= relocation
+ addend
;
9147 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9148 contents
+ rel
->r_offset
, relocation
,
9149 split16a_type
, htab
->params
->vle_reloc_fixup
);
9152 case R_PPC_VLE_LO16D
:
9153 relocation
= relocation
+ addend
;
9154 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9155 contents
+ rel
->r_offset
, relocation
,
9156 split16d_type
, htab
->params
->vle_reloc_fixup
);
9159 case R_PPC_VLE_HI16A
:
9160 relocation
= (relocation
+ addend
) >> 16;
9161 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9162 contents
+ rel
->r_offset
, relocation
,
9163 split16a_type
, htab
->params
->vle_reloc_fixup
);
9166 case R_PPC_VLE_HI16D
:
9167 relocation
= (relocation
+ addend
) >> 16;
9168 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9169 contents
+ rel
->r_offset
, relocation
,
9170 split16d_type
, htab
->params
->vle_reloc_fixup
);
9173 case R_PPC_VLE_HA16A
:
9174 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9175 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9176 contents
+ rel
->r_offset
, relocation
,
9177 split16a_type
, htab
->params
->vle_reloc_fixup
);
9180 case R_PPC_VLE_HA16D
:
9181 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9182 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9183 contents
+ rel
->r_offset
, relocation
,
9184 split16d_type
, htab
->params
->vle_reloc_fixup
);
9187 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9188 case R_PPC_EMB_SDA21
:
9189 case R_PPC_VLE_SDA21
:
9190 case R_PPC_EMB_RELSDA
:
9191 case R_PPC_VLE_SDA21_LO
:
9196 struct elf_link_hash_entry
*sda
= NULL
;
9198 if (sec
== NULL
|| sec
->output_section
== NULL
)
9200 unresolved_reloc
= TRUE
;
9204 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9205 if (strcmp (name
, ".sdata") == 0
9206 || strcmp (name
, ".sbss") == 0)
9209 sda
= htab
->sdata
[0].sym
;
9211 else if (strcmp (name
, ".sdata2") == 0
9212 || strcmp (name
, ".sbss2") == 0)
9215 sda
= htab
->sdata
[1].sym
;
9217 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
9218 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
9224 info
->callbacks
->einfo
9225 /* xgettext:c-format */
9226 (_("%P: %pB: the target (%s) of a %s relocation is "
9227 "in the wrong output section (%s)\n"),
9233 bfd_set_error (bfd_error_bad_value
);
9240 if (!is_static_defined (sda
))
9242 unresolved_reloc
= TRUE
;
9245 addend
-= SYM_VAL (sda
);
9248 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9250 && (r_type
== R_PPC_VLE_SDA21
9251 || r_type
== R_PPC_VLE_SDA21_LO
))
9253 relocation
= relocation
+ addend
;
9256 /* Force e_li insn, keeping RT from original insn. */
9260 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9261 /* Top 4 bits of value to 17..20. */
9262 insn
|= (relocation
& 0xf0000) >> 5;
9263 /* Next 5 bits of the value to 11..15. */
9264 insn
|= (relocation
& 0xf800) << 5;
9265 /* And the final 11 bits of the value to bits 21 to 31. */
9266 insn
|= relocation
& 0x7ff;
9268 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9270 if (r_type
== R_PPC_VLE_SDA21
9271 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
9275 else if (r_type
== R_PPC_EMB_SDA21
9276 || r_type
== R_PPC_VLE_SDA21
9277 || r_type
== R_PPC_VLE_SDA21_LO
)
9279 /* Fill in register field. */
9280 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
9282 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9286 case R_PPC_VLE_SDAREL_LO16A
:
9287 case R_PPC_VLE_SDAREL_LO16D
:
9288 case R_PPC_VLE_SDAREL_HI16A
:
9289 case R_PPC_VLE_SDAREL_HI16D
:
9290 case R_PPC_VLE_SDAREL_HA16A
:
9291 case R_PPC_VLE_SDAREL_HA16D
:
9295 struct elf_link_hash_entry
*sda
= NULL
;
9297 if (sec
== NULL
|| sec
->output_section
== NULL
)
9299 unresolved_reloc
= TRUE
;
9303 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9304 if (strcmp (name
, ".sdata") == 0
9305 || strcmp (name
, ".sbss") == 0)
9306 sda
= htab
->sdata
[0].sym
;
9307 else if (strcmp (name
, ".sdata2") == 0
9308 || strcmp (name
, ".sbss2") == 0)
9309 sda
= htab
->sdata
[1].sym
;
9313 /* xgettext:c-format */
9314 (_("%pB: the target (%s) of a %s relocation is "
9315 "in the wrong output section (%s)"),
9321 bfd_set_error (bfd_error_bad_value
);
9326 if (sda
== NULL
|| !is_static_defined (sda
))
9328 unresolved_reloc
= TRUE
;
9331 value
= relocation
+ addend
- SYM_VAL (sda
);
9333 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
9334 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9335 contents
+ rel
->r_offset
, value
,
9337 htab
->params
->vle_reloc_fixup
);
9338 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
9339 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9340 contents
+ rel
->r_offset
, value
,
9342 htab
->params
->vle_reloc_fixup
);
9343 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
9345 value
= value
>> 16;
9346 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9347 contents
+ rel
->r_offset
, value
,
9349 htab
->params
->vle_reloc_fixup
);
9351 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
9353 value
= value
>> 16;
9354 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9355 contents
+ rel
->r_offset
, value
,
9357 htab
->params
->vle_reloc_fixup
);
9359 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
9361 value
= (value
+ 0x8000) >> 16;
9362 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9363 contents
+ rel
->r_offset
, value
,
9365 htab
->params
->vle_reloc_fixup
);
9367 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
9369 value
= (value
+ 0x8000) >> 16;
9370 ppc_elf_vle_split16 (input_bfd
, input_section
, rel
->r_offset
,
9371 contents
+ rel
->r_offset
, value
,
9373 htab
->params
->vle_reloc_fixup
);
9378 case R_PPC_VLE_ADDR20
:
9379 ppc_elf_vle_split20 (output_bfd
, contents
+ rel
->r_offset
, relocation
);
9382 /* Relocate against the beginning of the section. */
9384 case R_PPC_SECTOFF_LO
:
9385 case R_PPC_SECTOFF_HI
:
9386 case R_PPC_SECTOFF_HA
:
9387 if (sec
== NULL
|| sec
->output_section
== NULL
)
9389 unresolved_reloc
= TRUE
;
9392 addend
-= sec
->output_section
->vma
;
9395 /* Negative relocations. */
9396 case R_PPC_EMB_NADDR32
:
9397 case R_PPC_EMB_NADDR16
:
9398 case R_PPC_EMB_NADDR16_LO
:
9399 case R_PPC_EMB_NADDR16_HI
:
9400 case R_PPC_EMB_NADDR16_HA
:
9401 addend
-= 2 * relocation
;
9405 case R_PPC_GLOB_DAT
:
9406 case R_PPC_JMP_SLOT
:
9407 case R_PPC_RELATIVE
:
9408 case R_PPC_IRELATIVE
:
9410 case R_PPC_PLTREL32
:
9411 case R_PPC_PLT16_LO
:
9412 case R_PPC_PLT16_HI
:
9413 case R_PPC_PLT16_HA
:
9415 case R_PPC_EMB_RELSEC16
:
9416 case R_PPC_EMB_RELST_LO
:
9417 case R_PPC_EMB_RELST_HI
:
9418 case R_PPC_EMB_RELST_HA
:
9419 case R_PPC_EMB_BIT_FLD
:
9420 info
->callbacks
->einfo
9421 /* xgettext:c-format */
9422 (_("%P: %pB: relocation %s is not yet supported for symbol %s\n"),
9427 bfd_set_error (bfd_error_invalid_operation
);
9432 /* Do any further special processing. */
9438 case R_PPC_ADDR16_HA
:
9439 case R_PPC_REL16_HA
:
9440 case R_PPC_REL16DX_HA
:
9441 case R_PPC_SECTOFF_HA
:
9442 case R_PPC_TPREL16_HA
:
9443 case R_PPC_DTPREL16_HA
:
9444 case R_PPC_EMB_NADDR16_HA
:
9445 case R_PPC_EMB_RELST_HA
:
9446 /* It's just possible that this symbol is a weak symbol
9447 that's not actually defined anywhere. In that case,
9448 'sec' would be NULL, and we should leave the symbol
9449 alone (it will be set to zero elsewhere in the link). */
9454 case R_PPC_PLT16_HA
:
9455 case R_PPC_GOT16_HA
:
9456 case R_PPC_GOT_TLSGD16_HA
:
9457 case R_PPC_GOT_TLSLD16_HA
:
9458 case R_PPC_GOT_TPREL16_HA
:
9459 case R_PPC_GOT_DTPREL16_HA
:
9460 /* Add 0x10000 if sign bit in 0:15 is set.
9461 Bits 0:15 are not used. */
9466 case R_PPC_ADDR16_LO
:
9468 case R_PPC_GOT16_LO
:
9469 case R_PPC_SDAREL16
:
9471 case R_PPC_SECTOFF_LO
:
9472 case R_PPC_DTPREL16
:
9473 case R_PPC_DTPREL16_LO
:
9475 case R_PPC_TPREL16_LO
:
9476 case R_PPC_GOT_TLSGD16
:
9477 case R_PPC_GOT_TLSGD16_LO
:
9478 case R_PPC_GOT_TLSLD16
:
9479 case R_PPC_GOT_TLSLD16_LO
:
9480 case R_PPC_GOT_DTPREL16
:
9481 case R_PPC_GOT_DTPREL16_LO
:
9482 case R_PPC_GOT_TPREL16
:
9483 case R_PPC_GOT_TPREL16_LO
:
9485 /* The 32-bit ABI lacks proper relocations to deal with
9486 certain 64-bit instructions. Prevent damage to bits
9487 that make up part of the insn opcode. */
9488 unsigned int insn
, mask
, lobit
;
9490 insn
= bfd_get_32 (input_bfd
,
9491 contents
+ rel
->r_offset
- d_offset
);
9493 if (is_insn_ds_form (insn
))
9495 else if (is_insn_dq_form (insn
))
9499 relocation
+= addend
;
9500 addend
= insn
& mask
;
9501 lobit
= mask
& relocation
;
9504 relocation
^= lobit
;
9505 info
->callbacks
->einfo
9506 /* xgettext:c-format */
9507 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9508 input_bfd
, input_section
, rel
->r_offset
,
9509 howto
->name
, sym_name
, mask
+ 1);
9510 bfd_set_error (bfd_error_bad_value
);
9518 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9519 "offset = %ld, addend = %ld\n",
9524 (long) rel
->r_offset
,
9528 if (unresolved_reloc
9529 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9531 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9532 rel
->r_offset
) != (bfd_vma
) -1)
9534 info
->callbacks
->einfo
9535 /* xgettext:c-format */
9536 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9537 input_bfd
, input_section
, rel
->r_offset
,
9543 /* 16-bit fields in insns mostly have signed values, but a
9544 few insns have 16-bit unsigned values. Really, we should
9545 have different reloc types. */
9546 if (howto
->complain_on_overflow
!= complain_overflow_dont
9547 && howto
->dst_mask
== 0xffff
9548 && (input_section
->flags
& SEC_CODE
) != 0)
9550 enum complain_overflow complain
= complain_overflow_signed
;
9552 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9556 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9557 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9558 complain
= complain_overflow_bitfield
;
9559 else if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9560 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9561 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
9562 complain
= complain_overflow_unsigned
;
9564 if (howto
->complain_on_overflow
!= complain
)
9567 alt_howto
.complain_on_overflow
= complain
;
9572 if (r_type
== R_PPC_REL16DX_HA
)
9574 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9575 if (rel
->r_offset
+ 4 > input_section
->size
)
9576 r
= bfd_reloc_outofrange
;
9581 relocation
+= addend
;
9582 relocation
-= (rel
->r_offset
9583 + input_section
->output_offset
9584 + input_section
->output_section
->vma
);
9586 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9588 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
9589 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9594 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9595 rel
->r_offset
, relocation
, addend
);
9597 if (r
!= bfd_reloc_ok
)
9599 if (r
== bfd_reloc_overflow
)
9602 /* On code like "if (foo) foo();" don't report overflow
9603 on a branch to zero when foo is undefined. */
9606 && (h
->root
.type
== bfd_link_hash_undefweak
9607 || h
->root
.type
== bfd_link_hash_undefined
)
9608 && is_branch_reloc (r_type
)))
9609 info
->callbacks
->reloc_overflow
9610 (info
, (h
? &h
->root
: NULL
), sym_name
, howto
->name
,
9611 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
);
9615 info
->callbacks
->einfo
9616 /* xgettext:c-format */
9617 (_("%H: %s reloc against `%s': error %d\n"),
9618 input_bfd
, input_section
, rel
->r_offset
,
9619 howto
->name
, sym_name
, (int) r
);
9630 Elf_Internal_Shdr
*rel_hdr
;
9631 size_t deleted
= rel
- wrel
;
9633 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
9634 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9635 if (rel_hdr
->sh_size
== 0)
9637 /* It is too late to remove an empty reloc section. Leave
9639 ??? What is wrong with an empty section??? */
9640 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
9645 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
9646 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9647 input_section
->reloc_count
-= deleted
;
9651 fprintf (stderr
, "\n");
9654 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9655 && input_section
->size
!= input_section
->rawsize
9656 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9657 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9659 /* Branch around the trampolines. */
9660 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9661 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9664 if (htab
->params
->ppc476_workaround
9665 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9666 && (!bfd_link_relocatable (info
)
9667 || (input_section
->output_section
->alignment_power
9668 >= htab
->params
->pagesize_p2
)))
9670 bfd_vma start_addr
, end_addr
, addr
;
9671 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9673 if (relax_info
->workaround_size
!= 0)
9679 bfd_put_32 (input_bfd
, BA
, fill
);
9680 p
= contents
+ input_section
->size
- relax_info
->workaround_size
;
9681 n
= relax_info
->workaround_size
>> 2;
9684 memcpy (p
, fill
, 4);
9689 /* The idea is: Replace the last instruction on a page with a
9690 branch to a patch area. Put the insn there followed by a
9691 branch back to the next page. Complicated a little by
9692 needing to handle moved conditional branches, and by not
9693 wanting to touch data-in-text. */
9695 start_addr
= (input_section
->output_section
->vma
9696 + input_section
->output_offset
);
9697 end_addr
= (start_addr
+ input_section
->size
9698 - relax_info
->workaround_size
);
9699 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9703 bfd_vma offset
= addr
- start_addr
;
9704 Elf_Internal_Rela
*lo
, *hi
;
9705 bfd_boolean is_data
;
9706 bfd_vma patch_off
, patch_addr
;
9709 /* Do we have a data reloc at this offset? If so, leave
9717 rel
= lo
+ (hi
- lo
) / 2;
9718 if (rel
->r_offset
< offset
)
9720 else if (rel
->r_offset
> offset
+ 3)
9724 switch (ELF32_R_TYPE (rel
->r_info
))
9741 /* Some instructions can be left alone too. Unconditional
9742 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9743 avoid the icache failure.
9745 The problem occurs due to prefetch across a page boundary
9746 where stale instructions can be fetched from the next
9747 page, and the mechanism for flushing these bad
9748 instructions fails under certain circumstances. The
9749 unconditional branches:
9750 1) Branch: b, bl, ba, bla,
9751 2) Branch Conditional: bc, bca, bcl, bcla,
9752 3) Branch Conditional to Link Register: bclr, bclrl,
9753 where (2) and (3) have BO=0x14 making them unconditional,
9754 prevent the bad prefetch because the prefetch itself is
9755 affected by these instructions. This happens even if the
9756 instruction is not executed.
9761 . addi 9,9,new_page@l
9768 The bctr is not predicted taken due to ctr not being
9769 ready, so prefetch continues on past the bctr into the
9770 new page which might have stale instructions. If they
9771 fail to be flushed, then they will be executed after the
9772 bctr executes. Either of the following modifications
9773 prevent the bad prefetch from happening in the first
9776 . lis 9,new_page@ha lis 9,new_page@ha
9777 . addi 9,9,new_page@l addi 9,9,new_page@l
9780 . nop b somewhere_else
9781 . b somewhere_else nop
9782 . new_page: new_page:
9784 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9785 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9786 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9787 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9788 || ((insn
& (0x3f << 26)) == (19u << 26)
9789 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9790 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9793 patch_addr
= (start_addr
+ input_section
->size
9794 - relax_info
->workaround_size
);
9795 patch_addr
= (patch_addr
+ 15) & -16;
9796 patch_off
= patch_addr
- start_addr
;
9797 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9800 && rel
->r_offset
>= offset
9801 && rel
->r_offset
< offset
+ 4)
9805 /* If the insn we are patching had a reloc, adjust the
9806 reloc r_offset so that the reloc applies to the moved
9807 location. This matters for -r and --emit-relocs. */
9808 if (rel
+ 1 != relend
)
9810 Elf_Internal_Rela tmp
= *rel
;
9812 /* Keep the relocs sorted by r_offset. */
9813 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9816 relend
[-1].r_offset
+= patch_off
- offset
;
9818 /* Adjust REL16 addends too. */
9819 switch (ELF32_R_TYPE (relend
[-1].r_info
))
9822 case R_PPC_REL16_LO
:
9823 case R_PPC_REL16_HI
:
9824 case R_PPC_REL16_HA
:
9825 relend
[-1].r_addend
+= patch_off
- offset
;
9831 /* If we are building a PIE or shared library with
9832 non-PIC objects, perhaps we had a dynamic reloc too?
9833 If so, the dynamic reloc must move with the insn. */
9834 sreloc
= elf_section_data (input_section
)->sreloc
;
9837 Elf32_External_Rela
*slo
, *shi
, *srelend
;
9840 slo
= (Elf32_External_Rela
*) sreloc
->contents
;
9841 shi
= srelend
= slo
+ sreloc
->reloc_count
;
9842 soffset
= (offset
+ input_section
->output_section
->vma
9843 + input_section
->output_offset
);
9846 Elf32_External_Rela
*srel
= slo
+ (shi
- slo
) / 2;
9847 bfd_elf32_swap_reloca_in (output_bfd
, (bfd_byte
*) srel
,
9849 if (outrel
.r_offset
< soffset
)
9851 else if (outrel
.r_offset
> soffset
+ 3)
9855 if (srel
+ 1 != srelend
)
9857 memmove (srel
, srel
+ 1,
9858 (srelend
- (srel
+ 1)) * sizeof (*srel
));
9861 outrel
.r_offset
+= patch_off
- offset
;
9862 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
9872 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9873 && (insn
& 2) == 0 /* relative */)
9875 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
9877 delta
+= offset
- patch_off
;
9878 if (bfd_link_relocatable (info
) && rel
!= NULL
)
9880 if (!bfd_link_relocatable (info
) && rel
!= NULL
)
9882 enum elf_ppc_reloc_type r_type
;
9884 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
9885 if (r_type
== R_PPC_REL14_BRTAKEN
)
9886 insn
|= BRANCH_PREDICT_BIT
;
9887 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
9888 insn
&= ~BRANCH_PREDICT_BIT
;
9890 BFD_ASSERT (r_type
== R_PPC_REL14
);
9892 if ((r_type
== R_PPC_REL14_BRTAKEN
9893 || r_type
== R_PPC_REL14_BRNTAKEN
)
9894 && delta
+ 0x8000 < 0x10000
9895 && (bfd_signed_vma
) delta
< 0)
9896 insn
^= BRANCH_PREDICT_BIT
;
9898 if (delta
+ 0x8000 < 0x10000)
9900 bfd_put_32 (input_bfd
,
9901 (insn
& ~0xfffc) | (delta
& 0xfffc),
9902 contents
+ patch_off
);
9904 bfd_put_32 (input_bfd
,
9905 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9906 contents
+ patch_off
);
9913 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
9915 relend
[-1].r_offset
+= 8;
9916 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
9918 bfd_put_32 (input_bfd
,
9919 (insn
& ~0xfffc) | 8,
9920 contents
+ patch_off
);
9922 bfd_put_32 (input_bfd
,
9923 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9924 contents
+ patch_off
);
9926 bfd_put_32 (input_bfd
,
9927 B
| ((delta
- 8) & 0x3fffffc),
9928 contents
+ patch_off
);
9934 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
9936 bfd_put_32 (input_bfd
,
9937 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9938 contents
+ patch_off
);
9941 BFD_ASSERT (patch_off
<= input_section
->size
);
9942 relax_info
->workaround_size
= input_section
->size
- patch_off
;
9949 /* Finish up dynamic symbol handling. We set the contents of various
9950 dynamic sections here. */
9953 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9954 struct bfd_link_info
*info
,
9955 struct elf_link_hash_entry
*h
,
9956 Elf_Internal_Sym
*sym
)
9958 struct ppc_elf_link_hash_table
*htab
;
9959 struct plt_entry
*ent
;
9960 bfd_boolean doneone
;
9963 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
9964 h
->root
.root
.string
);
9967 htab
= ppc_elf_hash_table (info
);
9968 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
9971 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9972 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9976 Elf_Internal_Rela rela
;
9978 bfd_vma reloc_index
;
9980 if (htab
->plt_type
== PLT_NEW
9981 || !htab
->elf
.dynamic_sections_created
9982 || h
->dynindx
== -1)
9983 reloc_index
= ent
->plt
.offset
/ 4;
9986 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
9987 / htab
->plt_slot_size
);
9988 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
9989 && htab
->plt_type
== PLT_OLD
)
9990 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
9993 /* This symbol has an entry in the procedure linkage table.
9995 if (htab
->plt_type
== PLT_VXWORKS
9996 && htab
->elf
.dynamic_sections_created
9997 && h
->dynindx
!= -1)
10000 const bfd_vma
*plt_entry
;
10002 /* The first three entries in .got.plt are reserved. */
10003 got_offset
= (reloc_index
+ 3) * 4;
10005 /* Use the right PLT. */
10006 plt_entry
= bfd_link_pic (info
) ? ppc_elf_vxworks_pic_plt_entry
10007 : ppc_elf_vxworks_plt_entry
;
10009 /* Fill in the .plt on VxWorks. */
10010 if (bfd_link_pic (info
))
10012 bfd_put_32 (output_bfd
,
10013 plt_entry
[0] | PPC_HA (got_offset
),
10014 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 0);
10015 bfd_put_32 (output_bfd
,
10016 plt_entry
[1] | PPC_LO (got_offset
),
10017 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 4);
10021 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
10023 bfd_put_32 (output_bfd
,
10024 plt_entry
[0] | PPC_HA (got_loc
),
10025 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 0);
10026 bfd_put_32 (output_bfd
,
10027 plt_entry
[1] | PPC_LO (got_loc
),
10028 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 4);
10031 bfd_put_32 (output_bfd
, plt_entry
[2],
10032 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 8);
10033 bfd_put_32 (output_bfd
, plt_entry
[3],
10034 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 12);
10036 /* This instruction is an immediate load. The value loaded is
10037 the byte offset of the R_PPC_JMP_SLOT relocation from the
10038 start of the .rela.plt section. The value is stored in the
10039 low-order 16 bits of the load instruction. */
10040 /* NOTE: It appears that this is now an index rather than a
10041 prescaled offset. */
10042 bfd_put_32 (output_bfd
,
10043 plt_entry
[4] | reloc_index
,
10044 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 16);
10045 /* This instruction is a PC-relative branch whose target is
10046 the start of the PLT section. The address of this branch
10047 instruction is 20 bytes beyond the start of this PLT entry.
10048 The address is encoded in bits 6-29, inclusive. The value
10049 stored is right-shifted by two bits, permitting a 26-bit
10051 bfd_put_32 (output_bfd
,
10053 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
10054 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 20);
10055 bfd_put_32 (output_bfd
, plt_entry
[6],
10056 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 24);
10057 bfd_put_32 (output_bfd
, plt_entry
[7],
10058 htab
->elf
.splt
->contents
+ ent
->plt
.offset
+ 28);
10060 /* Fill in the GOT entry corresponding to this PLT slot with
10061 the address immediately after the "bctr" instruction
10062 in this PLT entry. */
10063 bfd_put_32 (output_bfd
, (htab
->elf
.splt
->output_section
->vma
10064 + htab
->elf
.splt
->output_offset
10065 + ent
->plt
.offset
+ 16),
10066 htab
->elf
.sgotplt
->contents
+ got_offset
);
10068 if (!bfd_link_pic (info
))
10070 /* Fill in a couple of entries in .rela.plt.unloaded. */
10071 loc
= htab
->srelplt2
->contents
10072 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
10073 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
10074 * sizeof (Elf32_External_Rela
));
10076 /* Provide the @ha relocation for the first instruction. */
10077 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10078 + htab
->elf
.splt
->output_offset
10079 + ent
->plt
.offset
+ 2);
10080 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10082 rela
.r_addend
= got_offset
;
10083 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10084 loc
+= sizeof (Elf32_External_Rela
);
10086 /* Provide the @l relocation for the second instruction. */
10087 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10088 + htab
->elf
.splt
->output_offset
10089 + ent
->plt
.offset
+ 6);
10090 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10092 rela
.r_addend
= got_offset
;
10093 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10094 loc
+= sizeof (Elf32_External_Rela
);
10096 /* Provide a relocation for the GOT entry corresponding to this
10097 PLT slot. Point it at the middle of the .plt entry. */
10098 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
10099 + htab
->elf
.sgotplt
->output_offset
10101 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
10103 rela
.r_addend
= ent
->plt
.offset
+ 16;
10104 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10107 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10108 In particular, the offset for the relocation is not the
10109 address of the PLT entry for this function, as specified
10110 by the ABI. Instead, the offset is set to the address of
10111 the GOT slot for this function. See EABI 4.4.4.1. */
10112 rela
.r_offset
= (htab
->elf
.sgotplt
->output_section
->vma
10113 + htab
->elf
.sgotplt
->output_offset
10119 asection
*splt
= htab
->elf
.splt
;
10120 if (!htab
->elf
.dynamic_sections_created
10121 || h
->dynindx
== -1)
10122 splt
= htab
->elf
.iplt
;
10124 rela
.r_offset
= (splt
->output_section
->vma
10125 + splt
->output_offset
10126 + ent
->plt
.offset
);
10127 if (htab
->plt_type
== PLT_OLD
10128 || !htab
->elf
.dynamic_sections_created
10129 || h
->dynindx
== -1)
10131 /* We don't need to fill in the .plt. The ppc dynamic
10132 linker will fill it in. */
10136 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
10137 + htab
->glink
->output_section
->vma
10138 + htab
->glink
->output_offset
);
10139 bfd_put_32 (output_bfd
, val
,
10140 splt
->contents
+ ent
->plt
.offset
);
10144 /* Fill in the entry in the .rela.plt section. */
10146 if (!htab
->elf
.dynamic_sections_created
10147 || h
->dynindx
== -1)
10149 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
10151 && (h
->root
.type
== bfd_link_hash_defined
10152 || h
->root
.type
== bfd_link_hash_defweak
));
10153 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
10154 rela
.r_addend
= SYM_VAL (h
);
10157 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
10159 if (!htab
->elf
.dynamic_sections_created
10160 || h
->dynindx
== -1)
10162 loc
= (htab
->elf
.irelplt
->contents
10163 + (htab
->elf
.irelplt
->reloc_count
++
10164 * sizeof (Elf32_External_Rela
)));
10165 htab
->local_ifunc_resolver
= 1;
10169 loc
= (htab
->elf
.srelplt
->contents
10170 + reloc_index
* sizeof (Elf32_External_Rela
));
10171 if (h
->type
== STT_GNU_IFUNC
&& is_static_defined (h
))
10172 htab
->maybe_local_ifunc_resolver
= 1;
10174 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10176 if (!h
->def_regular
)
10178 /* Mark the symbol as undefined, rather than as
10179 defined in the .plt section. Leave the value if
10180 there were any relocations where pointer equality
10181 matters (this is a clue for the dynamic linker, to
10182 make function pointer comparisons work between an
10183 application and shared library), otherwise set it
10185 sym
->st_shndx
= SHN_UNDEF
;
10186 if (!h
->pointer_equality_needed
)
10188 else if (!h
->ref_regular_nonweak
)
10190 /* This breaks function pointer comparisons, but
10191 that is better than breaking tests for a NULL
10192 function pointer. */
10196 else if (h
->type
== STT_GNU_IFUNC
10197 && !bfd_link_pic (info
))
10199 /* Set the value of ifunc symbols in a non-pie
10200 executable to the glink entry. This is to avoid
10201 text relocations. We can't do this for ifunc in
10202 allocate_dynrelocs, as we do for normal dynamic
10203 function symbols with plt entries, because we need
10204 to keep the original value around for the ifunc
10206 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
10207 (output_bfd
, htab
->glink
->output_section
));
10208 sym
->st_value
= (ent
->glink_offset
10209 + htab
->glink
->output_offset
10210 + htab
->glink
->output_section
->vma
);
10215 if (htab
->plt_type
== PLT_NEW
10216 || !htab
->elf
.dynamic_sections_created
10217 || h
->dynindx
== -1)
10220 asection
*splt
= htab
->elf
.splt
;
10222 if (!htab
->elf
.dynamic_sections_created
10223 || h
->dynindx
== -1)
10224 splt
= htab
->elf
.iplt
;
10226 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
10227 write_glink_stub (h
, ent
, splt
, p
, info
);
10229 if (!bfd_link_pic (info
))
10230 /* We only need one non-PIC glink stub. */
10240 Elf_Internal_Rela rela
;
10243 /* This symbols needs a copy reloc. Set it up. */
10246 fprintf (stderr
, ", copy");
10249 BFD_ASSERT (h
->dynindx
!= -1);
10251 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
10253 else if (h
->root
.u
.def
.section
== htab
->elf
.sdynrelro
)
10254 s
= htab
->elf
.sreldynrelro
;
10256 s
= htab
->elf
.srelbss
;
10257 BFD_ASSERT (s
!= NULL
);
10259 rela
.r_offset
= SYM_VAL (h
);
10260 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
10262 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
10263 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10267 fprintf (stderr
, "\n");
10273 static enum elf_reloc_type_class
10274 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
10275 const asection
*rel_sec
,
10276 const Elf_Internal_Rela
*rela
)
10278 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
10280 if (rel_sec
== htab
->elf
.irelplt
)
10281 return reloc_class_ifunc
;
10283 switch (ELF32_R_TYPE (rela
->r_info
))
10285 case R_PPC_RELATIVE
:
10286 return reloc_class_relative
;
10287 case R_PPC_JMP_SLOT
:
10288 return reloc_class_plt
;
10290 return reloc_class_copy
;
10292 return reloc_class_normal
;
10296 /* Finish up the dynamic sections. */
10299 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
10300 struct bfd_link_info
*info
)
10303 struct ppc_elf_link_hash_table
*htab
;
10306 bfd_boolean ret
= TRUE
;
10309 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
10312 htab
= ppc_elf_hash_table (info
);
10313 dynobj
= htab
->elf
.dynobj
;
10314 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
10317 if (htab
->elf
.hgot
!= NULL
)
10318 got
= SYM_VAL (htab
->elf
.hgot
);
10320 if (htab
->elf
.dynamic_sections_created
)
10322 Elf32_External_Dyn
*dyncon
, *dynconend
;
10324 BFD_ASSERT (htab
->elf
.splt
!= NULL
&& sdyn
!= NULL
);
10326 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
10327 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10328 for (; dyncon
< dynconend
; dyncon
++)
10330 Elf_Internal_Dyn dyn
;
10333 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10338 if (htab
->is_vxworks
)
10339 s
= htab
->elf
.sgotplt
;
10341 s
= htab
->elf
.splt
;
10342 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10346 dyn
.d_un
.d_val
= htab
->elf
.srelplt
->size
;
10350 s
= htab
->elf
.srelplt
;
10351 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10355 dyn
.d_un
.d_ptr
= got
;
10359 if (htab
->local_ifunc_resolver
)
10360 info
->callbacks
->einfo
10361 (_("%X%P: text relocations and GNU indirect "
10362 "functions will result in a segfault at runtime\n"));
10363 else if (htab
->maybe_local_ifunc_resolver
)
10364 info
->callbacks
->einfo
10365 (_("%P: warning: text relocations and GNU indirect "
10366 "functions may result in a segfault at runtime\n"));
10370 if (htab
->is_vxworks
10371 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
10376 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10380 if (htab
->elf
.sgot
!= NULL
10381 && htab
->elf
.sgot
->output_section
!= bfd_abs_section_ptr
)
10383 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->elf
.sgot
10384 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->elf
.sgotplt
)
10386 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
10388 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
10389 if (htab
->plt_type
== PLT_OLD
)
10391 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10392 so that a function can easily find the address of
10393 _GLOBAL_OFFSET_TABLE_. */
10394 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
10395 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10396 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
10401 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
10402 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
10403 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10404 bfd_put_32 (output_bfd
, val
, p
);
10409 /* xgettext:c-format */
10410 info
->callbacks
->einfo (_("%P: %s not defined in linker created %s\n"),
10411 htab
->elf
.hgot
->root
.root
.string
,
10412 (htab
->elf
.sgotplt
!= NULL
10413 ? htab
->elf
.sgotplt
->name
10414 : htab
->elf
.sgot
->name
));
10415 bfd_set_error (bfd_error_bad_value
);
10419 elf_section_data (htab
->elf
.sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
10422 /* Fill in the first entry in the VxWorks procedure linkage table. */
10423 if (htab
->is_vxworks
10424 && htab
->elf
.splt
!= NULL
10425 && htab
->elf
.splt
->size
!= 0
10426 && htab
->elf
.splt
->output_section
!= bfd_abs_section_ptr
)
10428 asection
*splt
= htab
->elf
.splt
;
10429 /* Use the right PLT. */
10430 const bfd_vma
*plt_entry
= (bfd_link_pic (info
)
10431 ? ppc_elf_vxworks_pic_plt0_entry
10432 : ppc_elf_vxworks_plt0_entry
);
10434 if (!bfd_link_pic (info
))
10436 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
10438 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
10439 splt
->contents
+ 0);
10440 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
10441 splt
->contents
+ 4);
10445 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
10446 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
10448 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
10449 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
10450 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
10451 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
10452 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
10453 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
10455 if (! bfd_link_pic (info
))
10457 Elf_Internal_Rela rela
;
10460 loc
= htab
->srelplt2
->contents
;
10462 /* Output the @ha relocation for the first instruction. */
10463 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10464 + htab
->elf
.splt
->output_offset
10466 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10468 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10469 loc
+= sizeof (Elf32_External_Rela
);
10471 /* Output the @l relocation for the second instruction. */
10472 rela
.r_offset
= (htab
->elf
.splt
->output_section
->vma
10473 + htab
->elf
.splt
->output_offset
10475 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10477 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10478 loc
+= sizeof (Elf32_External_Rela
);
10480 /* Fix up the remaining relocations. They may have the wrong
10481 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10482 in which symbols were output. */
10483 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
10485 Elf_Internal_Rela rel
;
10487 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10488 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10489 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10490 loc
+= sizeof (Elf32_External_Rela
);
10492 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10493 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10494 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10495 loc
+= sizeof (Elf32_External_Rela
);
10497 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10498 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
10499 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10500 loc
+= sizeof (Elf32_External_Rela
);
10505 if (htab
->glink
!= NULL
10506 && htab
->glink
->contents
!= NULL
10507 && htab
->elf
.dynamic_sections_created
)
10510 unsigned char *endp
;
10514 * PIC glink code is the following:
10516 * # ith PLT code stub.
10517 * addis 11,30,(plt+(i-1)*4-got)@ha
10518 * lwz 11,(plt+(i-1)*4-got)@l(11)
10522 * # A table of branches, one for each plt entry.
10523 * # The idea is that the plt call stub loads ctr and r11 with these
10524 * # addresses, so (r11 - res_0) gives the plt index * 4.
10525 * res_0: b PLTresolve
10526 * res_1: b PLTresolve
10528 * # Some number of entries towards the end can be nops
10534 * addis 11,11,(1f-res_0)@ha
10537 * 1: addi 11,11,(1b-res_0)@l
10540 * sub 11,11,12 # r11 = index * 4
10541 * addis 12,12,(got+4-1b)@ha
10542 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10543 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10546 * add 11,0,11 # r11 = index * 12 = reloc offset.
10549 * Non-PIC glink code is a little simpler.
10551 * # ith PLT code stub.
10552 * lis 11,(plt+(i-1)*4)@ha
10553 * lwz 11,(plt+(i-1)*4)@l(11)
10557 * The branch table is the same, then comes
10560 * lis 12,(got+4)@ha
10561 * addis 11,11,(-res_0)@ha
10562 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10563 * addi 11,11,(-res_0)@l # r11 = index * 4
10566 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10567 * add 11,0,11 # r11 = index * 12 = reloc offset.
10571 /* Build the branch table, one for each plt entry (less one),
10572 and perhaps some padding. */
10573 p
= htab
->glink
->contents
;
10574 p
+= htab
->glink_pltresolve
;
10575 endp
= htab
->glink
->contents
;
10576 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10577 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10579 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10584 bfd_put_32 (output_bfd
, NOP
, p
);
10588 res0
= (htab
->glink_pltresolve
10589 + htab
->glink
->output_section
->vma
10590 + htab
->glink
->output_offset
);
10592 if (htab
->params
->ppc476_workaround
)
10594 /* Ensure that a call stub at the end of a page doesn't
10595 result in prefetch over the end of the page into the
10596 glink branch table. */
10597 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10599 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10600 + htab
->glink
->output_offset
);
10602 for (page_addr
= res0
& -pagesize
;
10603 page_addr
> glink_start
;
10604 page_addr
-= pagesize
)
10606 /* We have a plt call stub that may need fixing. */
10610 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10611 insn
= bfd_get_32 (output_bfd
, loc
);
10614 /* By alignment, we know that there must be at least
10615 one other call stub before this one. */
10616 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10618 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10620 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10625 /* Last comes the PLTresolve stub. */
10626 endp
= p
+ GLINK_PLTRESOLVE
;
10627 if (bfd_link_pic (info
))
10631 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10632 + htab
->glink
->output_section
->vma
10633 + htab
->glink
->output_offset
);
10635 bfd_put_32 (output_bfd
, ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
);
10637 bfd_put_32 (output_bfd
, MFLR_0
, p
);
10639 bfd_put_32 (output_bfd
, BCL_20_31
, p
);
10641 bfd_put_32 (output_bfd
, ADDI_11_11
+ PPC_LO (bcl
- res0
), p
);
10643 bfd_put_32 (output_bfd
, MFLR_12
, p
);
10645 bfd_put_32 (output_bfd
, MTLR_0
, p
);
10647 bfd_put_32 (output_bfd
, SUB_11_11_12
, p
);
10649 bfd_put_32 (output_bfd
, ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
);
10651 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10653 bfd_put_32 (output_bfd
, LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
);
10655 bfd_put_32 (output_bfd
, LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
);
10660 bfd_put_32 (output_bfd
, LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
);
10662 bfd_put_32 (output_bfd
, LWZ_12_12
+ 4, p
);
10665 bfd_put_32 (output_bfd
, MTCTR_0
, p
);
10667 bfd_put_32 (output_bfd
, ADD_0_11_11
, p
);
10671 bfd_put_32 (output_bfd
, LIS_12
+ PPC_HA (got
+ 4), p
);
10673 bfd_put_32 (output_bfd
, ADDIS_11_11
+ PPC_HA (-res0
), p
);
10675 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10676 bfd_put_32 (output_bfd
, LWZ_0_12
+ PPC_LO (got
+ 4), p
);
10678 bfd_put_32 (output_bfd
, LWZU_0_12
+ PPC_LO (got
+ 4), p
);
10680 bfd_put_32 (output_bfd
, ADDI_11_11
+ PPC_LO (-res0
), p
);
10682 bfd_put_32 (output_bfd
, MTCTR_0
, p
);
10684 bfd_put_32 (output_bfd
, ADD_0_11_11
, p
);
10686 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10687 bfd_put_32 (output_bfd
, LWZ_12_12
+ PPC_LO (got
+ 8), p
);
10689 bfd_put_32 (output_bfd
, LWZ_12_12
+ 4, p
);
10692 bfd_put_32 (output_bfd
, ADD_11_0_11
, p
);
10694 bfd_put_32 (output_bfd
, BCTR
, p
);
10698 bfd_put_32 (output_bfd
,
10699 htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
10702 BFD_ASSERT (p
== endp
);
10705 if (htab
->glink_eh_frame
!= NULL
10706 && htab
->glink_eh_frame
->contents
!= NULL
)
10708 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10711 p
+= sizeof (glink_eh_frame_cie
);
10716 /* Offset to .glink. */
10717 val
= (htab
->glink
->output_section
->vma
10718 + htab
->glink
->output_offset
);
10719 val
-= (htab
->glink_eh_frame
->output_section
->vma
10720 + htab
->glink_eh_frame
->output_offset
);
10721 val
-= p
- htab
->glink_eh_frame
->contents
;
10722 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10724 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10725 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10726 htab
->glink_eh_frame
,
10727 htab
->glink_eh_frame
->contents
))
10734 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10735 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10736 #define TARGET_BIG_SYM powerpc_elf32_vec
10737 #define TARGET_BIG_NAME "elf32-powerpc"
10738 #define ELF_ARCH bfd_arch_powerpc
10739 #define ELF_TARGET_ID PPC32_ELF_DATA
10740 #define ELF_MACHINE_CODE EM_PPC
10741 #ifdef __QNXTARGET__
10742 #define ELF_MAXPAGESIZE 0x1000
10743 #define ELF_COMMONPAGESIZE 0x1000
10745 #define ELF_MAXPAGESIZE 0x10000
10746 #define ELF_COMMONPAGESIZE 0x10000
10748 #define ELF_MINPAGESIZE 0x1000
10749 #define elf_info_to_howto ppc_elf_info_to_howto
10751 #ifdef EM_CYGNUS_POWERPC
10752 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10756 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10759 #define elf_backend_plt_not_loaded 1
10760 #define elf_backend_want_dynrelro 1
10761 #define elf_backend_can_gc_sections 1
10762 #define elf_backend_can_refcount 1
10763 #define elf_backend_rela_normal 1
10764 #define elf_backend_caches_rawsize 1
10766 #define bfd_elf32_mkobject ppc_elf_mkobject
10767 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10768 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10769 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10770 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10771 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10772 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10773 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10775 #define elf_backend_object_p ppc_elf_object_p
10776 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10777 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10778 #define elf_backend_relocate_section ppc_elf_relocate_section
10779 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10780 #define elf_backend_check_relocs ppc_elf_check_relocs
10781 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10782 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10783 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10784 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10785 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10786 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10787 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10788 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10789 #define elf_backend_fake_sections ppc_elf_fake_sections
10790 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10791 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10792 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10793 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10794 #define elf_backend_write_core_note ppc_elf_write_core_note
10795 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10796 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10797 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10798 #define elf_backend_write_section ppc_elf_write_section
10799 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10800 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10801 #define elf_backend_action_discarded ppc_elf_action_discarded
10802 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10803 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10805 #include "elf32-target.h"
10807 /* FreeBSD Target */
10809 #undef TARGET_LITTLE_SYM
10810 #undef TARGET_LITTLE_NAME
10812 #undef TARGET_BIG_SYM
10813 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10814 #undef TARGET_BIG_NAME
10815 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10818 #define ELF_OSABI ELFOSABI_FREEBSD
10821 #define elf32_bed elf32_powerpc_fbsd_bed
10823 #include "elf32-target.h"
10825 /* VxWorks Target */
10827 #undef TARGET_LITTLE_SYM
10828 #undef TARGET_LITTLE_NAME
10830 #undef TARGET_BIG_SYM
10831 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10832 #undef TARGET_BIG_NAME
10833 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10837 /* VxWorks uses the elf default section flags for .plt. */
10838 static const struct bfd_elf_special_section
*
10839 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd
, asection
*sec
)
10841 if (sec
->name
== NULL
)
10844 if (strcmp (sec
->name
, ".plt") == 0)
10845 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
10847 return ppc_elf_get_sec_type_attr (abfd
, sec
);
10850 /* Like ppc_elf_link_hash_table_create, but overrides
10851 appropriately for VxWorks. */
10852 static struct bfd_link_hash_table
*
10853 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
10855 struct bfd_link_hash_table
*ret
;
10857 ret
= ppc_elf_link_hash_table_create (abfd
);
10860 struct ppc_elf_link_hash_table
*htab
10861 = (struct ppc_elf_link_hash_table
*)ret
;
10862 htab
->is_vxworks
= 1;
10863 htab
->plt_type
= PLT_VXWORKS
;
10864 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
10865 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
10866 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
10871 /* Tweak magic VxWorks symbols as they are loaded. */
10873 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
10874 struct bfd_link_info
*info
,
10875 Elf_Internal_Sym
*sym
,
10876 const char **namep
,
10881 if (!elf_vxworks_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
,
10885 return ppc_elf_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
, valp
);
10889 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10891 ppc_elf_final_write_processing (abfd
, linker
);
10892 elf_vxworks_final_write_processing (abfd
, linker
);
10895 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10897 #undef elf_backend_want_plt_sym
10898 #define elf_backend_want_plt_sym 1
10899 #undef elf_backend_want_got_plt
10900 #define elf_backend_want_got_plt 1
10901 #undef elf_backend_got_symbol_offset
10902 #define elf_backend_got_symbol_offset 0
10903 #undef elf_backend_plt_not_loaded
10904 #define elf_backend_plt_not_loaded 0
10905 #undef elf_backend_plt_readonly
10906 #define elf_backend_plt_readonly 1
10907 #undef elf_backend_got_header_size
10908 #define elf_backend_got_header_size 12
10909 #undef elf_backend_dtrel_excludes_plt
10910 #define elf_backend_dtrel_excludes_plt 1
10912 #undef bfd_elf32_get_synthetic_symtab
10914 #undef bfd_elf32_bfd_link_hash_table_create
10915 #define bfd_elf32_bfd_link_hash_table_create \
10916 ppc_elf_vxworks_link_hash_table_create
10917 #undef elf_backend_add_symbol_hook
10918 #define elf_backend_add_symbol_hook \
10919 ppc_elf_vxworks_add_symbol_hook
10920 #undef elf_backend_link_output_symbol_hook
10921 #define elf_backend_link_output_symbol_hook \
10922 elf_vxworks_link_output_symbol_hook
10923 #undef elf_backend_final_write_processing
10924 #define elf_backend_final_write_processing \
10925 ppc_elf_vxworks_final_write_processing
10926 #undef elf_backend_get_sec_type_attr
10927 #define elf_backend_get_sec_type_attr \
10928 ppc_elf_vxworks_get_sec_type_attr
10929 #undef elf_backend_emit_relocs
10930 #define elf_backend_emit_relocs \
10931 elf_vxworks_emit_relocs
10934 #define elf32_bed ppc_elf_vxworks_bed
10935 #undef elf_backend_post_process_headers
10937 #include "elf32-target.h"