1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2016 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"
39 typedef enum split16_format_type
46 /* RELA relocations are used here. */
48 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc_elf_unhandled_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
53 /* Branch prediction bit for branch taken relocs. */
54 #define BRANCH_PREDICT_BIT 0x200000
55 /* Mask to set RA in memory instructions. */
56 #define RA_REGISTER_MASK 0x001f0000
57 /* Value to shift register by to insert RA. */
58 #define RA_REGISTER_SHIFT 16
60 /* The name of the dynamic interpreter. This is put in the .interp
62 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64 /* For old-style PLT. */
65 /* The number of single-slot PLT entries (the rest use two slots). */
66 #define PLT_NUM_SINGLE_ENTRIES 8192
68 /* For new-style .glink and .plt. */
69 #define GLINK_PLTRESOLVE 16*4
70 #define GLINK_ENTRY_SIZE 4*4
71 #define TLS_GET_ADDR_GLINK_SIZE 12*4
73 /* VxWorks uses its own plt layout, filled in by the static linker. */
75 /* The standard VxWorks PLT entry. */
76 #define VXWORKS_PLT_ENTRY_SIZE 32
77 static const bfd_vma ppc_elf_vxworks_plt_entry
78 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
80 0x3d800000, /* lis r12,0 */
81 0x818c0000, /* lwz r12,0(r12) */
82 0x7d8903a6, /* mtctr r12 */
83 0x4e800420, /* bctr */
84 0x39600000, /* li r11,0 */
85 0x48000000, /* b 14 <.PLT0resolve+0x4> */
89 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
90 [VXWORKS_PLT_ENTRY_SIZE
/ 4] =
92 0x3d9e0000, /* addis r12,r30,0 */
93 0x818c0000, /* lwz r12,0(r12) */
94 0x7d8903a6, /* mtctr r12 */
95 0x4e800420, /* bctr */
96 0x39600000, /* li r11,0 */
97 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
102 /* The initial VxWorks PLT entry. */
103 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
104 static const bfd_vma ppc_elf_vxworks_plt0_entry
105 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
107 0x3d800000, /* lis r12,0 */
108 0x398c0000, /* addi r12,r12,0 */
109 0x800c0008, /* lwz r0,8(r12) */
110 0x7c0903a6, /* mtctr r0 */
111 0x818c0004, /* lwz r12,4(r12) */
112 0x4e800420, /* bctr */
113 0x60000000, /* nop */
114 0x60000000, /* nop */
116 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
117 [VXWORKS_PLT_INITIAL_ENTRY_SIZE
/ 4] =
119 0x819e0008, /* lwz r12,8(r30) */
120 0x7d8903a6, /* mtctr r12 */
121 0x819e0004, /* lwz r12,4(r30) */
122 0x4e800420, /* bctr */
123 0x60000000, /* nop */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
129 /* For executables, we have some additional relocations in
130 .rela.plt.unloaded, for the kernel loader. */
132 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
133 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
134 /* The number of relocations in the PLTResolve slot. */
135 #define VXWORKS_PLTRESOLVE_RELOCS 2
136 /* The number of relocations in the PLTResolve slot when when creating
138 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
140 /* Some instructions. */
141 #define ADDIS_11_11 0x3d6b0000
142 #define ADDIS_11_30 0x3d7e0000
143 #define ADDIS_12_12 0x3d8c0000
144 #define ADDI_11_11 0x396b0000
145 #define ADD_0_11_11 0x7c0b5a14
146 #define ADD_3_12_2 0x7c6c1214
147 #define ADD_11_0_11 0x7d605a14
149 #define BA 0x48000002
150 #define BCL_20_31 0x429f0005
151 #define BCTR 0x4e800420
152 #define BEQLR 0x4d820020
153 #define CMPWI_11_0 0x2c0b0000
154 #define LIS_11 0x3d600000
155 #define LIS_12 0x3d800000
156 #define LWZU_0_12 0x840c0000
157 #define LWZ_0_12 0x800c0000
158 #define LWZ_11_3 0x81630000
159 #define LWZ_11_11 0x816b0000
160 #define LWZ_11_30 0x817e0000
161 #define LWZ_12_3 0x81830000
162 #define LWZ_12_12 0x818c0000
163 #define MR_0_3 0x7c601b78
164 #define MR_3_0 0x7c030378
165 #define MFLR_0 0x7c0802a6
166 #define MFLR_12 0x7d8802a6
167 #define MTCTR_0 0x7c0903a6
168 #define MTCTR_11 0x7d6903a6
169 #define MTLR_0 0x7c0803a6
170 #define NOP 0x60000000
171 #define SUB_11_11_12 0x7d6c5850
173 /* Offset of tp and dtp pointers from start of TLS block. */
174 #define TP_OFFSET 0x7000
175 #define DTP_OFFSET 0x8000
177 /* The value of a defined global symbol. */
178 #define SYM_VAL(SYM) \
179 ((SYM)->root.u.def.section->output_section->vma \
180 + (SYM)->root.u.def.section->output_offset \
181 + (SYM)->root.u.def.value)
183 static reloc_howto_type
*ppc_elf_howto_table
[R_PPC_max
];
185 static reloc_howto_type ppc_elf_howto_raw
[] = {
186 /* This reloc does nothing. */
187 HOWTO (R_PPC_NONE
, /* type */
189 3, /* size (0 = byte, 1 = short, 2 = long) */
191 FALSE
, /* pc_relative */
193 complain_overflow_dont
, /* complain_on_overflow */
194 bfd_elf_generic_reloc
, /* special_function */
195 "R_PPC_NONE", /* name */
196 FALSE
, /* partial_inplace */
199 FALSE
), /* pcrel_offset */
201 /* A standard 32 bit relocation. */
202 HOWTO (R_PPC_ADDR32
, /* type */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
206 FALSE
, /* pc_relative */
208 complain_overflow_dont
, /* complain_on_overflow */
209 bfd_elf_generic_reloc
, /* special_function */
210 "R_PPC_ADDR32", /* name */
211 FALSE
, /* partial_inplace */
213 0xffffffff, /* dst_mask */
214 FALSE
), /* pcrel_offset */
216 /* An absolute 26 bit branch; the lower two bits must be zero.
217 FIXME: we don't check that, we just clear them. */
218 HOWTO (R_PPC_ADDR24
, /* type */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
222 FALSE
, /* pc_relative */
224 complain_overflow_signed
, /* complain_on_overflow */
225 bfd_elf_generic_reloc
, /* special_function */
226 "R_PPC_ADDR24", /* name */
227 FALSE
, /* partial_inplace */
229 0x3fffffc, /* dst_mask */
230 FALSE
), /* pcrel_offset */
232 /* A standard 16 bit relocation. */
233 HOWTO (R_PPC_ADDR16
, /* type */
235 1, /* size (0 = byte, 1 = short, 2 = long) */
237 FALSE
, /* pc_relative */
239 complain_overflow_bitfield
, /* complain_on_overflow */
240 bfd_elf_generic_reloc
, /* special_function */
241 "R_PPC_ADDR16", /* name */
242 FALSE
, /* partial_inplace */
244 0xffff, /* dst_mask */
245 FALSE
), /* pcrel_offset */
247 /* A 16 bit relocation without overflow. */
248 HOWTO (R_PPC_ADDR16_LO
, /* type */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
252 FALSE
, /* pc_relative */
254 complain_overflow_dont
,/* complain_on_overflow */
255 bfd_elf_generic_reloc
, /* special_function */
256 "R_PPC_ADDR16_LO", /* name */
257 FALSE
, /* partial_inplace */
259 0xffff, /* dst_mask */
260 FALSE
), /* pcrel_offset */
262 /* The high order 16 bits of an address. */
263 HOWTO (R_PPC_ADDR16_HI
, /* type */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE
, /* pc_relative */
269 complain_overflow_dont
, /* complain_on_overflow */
270 bfd_elf_generic_reloc
, /* special_function */
271 "R_PPC_ADDR16_HI", /* name */
272 FALSE
, /* partial_inplace */
274 0xffff, /* dst_mask */
275 FALSE
), /* pcrel_offset */
277 /* The high order 16 bits of an address, plus 1 if the contents of
278 the low 16 bits, treated as a signed number, is negative. */
279 HOWTO (R_PPC_ADDR16_HA
, /* type */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE
, /* pc_relative */
285 complain_overflow_dont
, /* complain_on_overflow */
286 ppc_elf_addr16_ha_reloc
, /* special_function */
287 "R_PPC_ADDR16_HA", /* name */
288 FALSE
, /* partial_inplace */
290 0xffff, /* dst_mask */
291 FALSE
), /* pcrel_offset */
293 /* An absolute 16 bit branch; the lower two bits must be zero.
294 FIXME: we don't check that, we just clear them. */
295 HOWTO (R_PPC_ADDR14
, /* type */
297 2, /* size (0 = byte, 1 = short, 2 = long) */
299 FALSE
, /* pc_relative */
301 complain_overflow_signed
, /* complain_on_overflow */
302 bfd_elf_generic_reloc
, /* special_function */
303 "R_PPC_ADDR14", /* name */
304 FALSE
, /* partial_inplace */
306 0xfffc, /* dst_mask */
307 FALSE
), /* pcrel_offset */
309 /* An absolute 16 bit branch, for which bit 10 should be set to
310 indicate that the branch is expected to be taken. The lower two
311 bits must be zero. */
312 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
316 FALSE
, /* pc_relative */
318 complain_overflow_signed
, /* complain_on_overflow */
319 bfd_elf_generic_reloc
, /* special_function */
320 "R_PPC_ADDR14_BRTAKEN",/* name */
321 FALSE
, /* partial_inplace */
323 0xfffc, /* dst_mask */
324 FALSE
), /* pcrel_offset */
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is not expected to be taken. The lower
328 two bits must be zero. */
329 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE
, /* pc_relative */
335 complain_overflow_signed
, /* complain_on_overflow */
336 bfd_elf_generic_reloc
, /* special_function */
337 "R_PPC_ADDR14_BRNTAKEN",/* name */
338 FALSE
, /* partial_inplace */
340 0xfffc, /* dst_mask */
341 FALSE
), /* pcrel_offset */
343 /* A relative 26 bit branch; the lower two bits must be zero. */
344 HOWTO (R_PPC_REL24
, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 TRUE
, /* pc_relative */
350 complain_overflow_signed
, /* complain_on_overflow */
351 bfd_elf_generic_reloc
, /* special_function */
352 "R_PPC_REL24", /* name */
353 FALSE
, /* partial_inplace */
355 0x3fffffc, /* dst_mask */
356 TRUE
), /* pcrel_offset */
358 /* A relative 16 bit branch; the lower two bits must be zero. */
359 HOWTO (R_PPC_REL14
, /* type */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
363 TRUE
, /* pc_relative */
365 complain_overflow_signed
, /* complain_on_overflow */
366 bfd_elf_generic_reloc
, /* special_function */
367 "R_PPC_REL14", /* name */
368 FALSE
, /* partial_inplace */
370 0xfffc, /* dst_mask */
371 TRUE
), /* pcrel_offset */
373 /* A relative 16 bit branch. Bit 10 should be set to indicate that
374 the branch is expected to be taken. The lower two bits must be
376 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
380 TRUE
, /* pc_relative */
382 complain_overflow_signed
, /* complain_on_overflow */
383 bfd_elf_generic_reloc
, /* special_function */
384 "R_PPC_REL14_BRTAKEN", /* name */
385 FALSE
, /* partial_inplace */
387 0xfffc, /* dst_mask */
388 TRUE
), /* pcrel_offset */
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is not expected to be taken. The lower two bits must
393 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE
, /* pc_relative */
399 complain_overflow_signed
, /* complain_on_overflow */
400 bfd_elf_generic_reloc
, /* special_function */
401 "R_PPC_REL14_BRNTAKEN",/* name */
402 FALSE
, /* partial_inplace */
404 0xfffc, /* dst_mask */
405 TRUE
), /* pcrel_offset */
407 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
409 HOWTO (R_PPC_GOT16
, /* type */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE
, /* pc_relative */
415 complain_overflow_signed
, /* complain_on_overflow */
416 ppc_elf_unhandled_reloc
, /* special_function */
417 "R_PPC_GOT16", /* name */
418 FALSE
, /* partial_inplace */
420 0xffff, /* dst_mask */
421 FALSE
), /* pcrel_offset */
423 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
425 HOWTO (R_PPC_GOT16_LO
, /* type */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
429 FALSE
, /* pc_relative */
431 complain_overflow_dont
, /* complain_on_overflow */
432 ppc_elf_unhandled_reloc
, /* special_function */
433 "R_PPC_GOT16_LO", /* name */
434 FALSE
, /* partial_inplace */
436 0xffff, /* dst_mask */
437 FALSE
), /* pcrel_offset */
439 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
441 HOWTO (R_PPC_GOT16_HI
, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE
, /* pc_relative */
447 complain_overflow_dont
, /* complain_on_overflow */
448 ppc_elf_unhandled_reloc
, /* special_function */
449 "R_PPC_GOT16_HI", /* name */
450 FALSE
, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE
), /* pcrel_offset */
455 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
457 HOWTO (R_PPC_GOT16_HA
, /* type */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
461 FALSE
, /* pc_relative */
463 complain_overflow_dont
, /* complain_on_overflow */
464 ppc_elf_unhandled_reloc
, /* special_function */
465 "R_PPC_GOT16_HA", /* name */
466 FALSE
, /* partial_inplace */
468 0xffff, /* dst_mask */
469 FALSE
), /* pcrel_offset */
471 /* Like R_PPC_REL24, but referring to the procedure linkage table
472 entry for the symbol. */
473 HOWTO (R_PPC_PLTREL24
, /* type */
475 2, /* size (0 = byte, 1 = short, 2 = long) */
477 TRUE
, /* pc_relative */
479 complain_overflow_signed
, /* complain_on_overflow */
480 ppc_elf_unhandled_reloc
, /* special_function */
481 "R_PPC_PLTREL24", /* name */
482 FALSE
, /* partial_inplace */
484 0x3fffffc, /* dst_mask */
485 TRUE
), /* pcrel_offset */
487 /* This is used only by the dynamic linker. The symbol should exist
488 both in the object being run and in some shared library. The
489 dynamic linker copies the data addressed by the symbol from the
490 shared library into the object, because the object being
491 run has to have the data at some particular address. */
492 HOWTO (R_PPC_COPY
, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 FALSE
, /* pc_relative */
498 complain_overflow_dont
, /* complain_on_overflow */
499 ppc_elf_unhandled_reloc
, /* special_function */
500 "R_PPC_COPY", /* name */
501 FALSE
, /* partial_inplace */
504 FALSE
), /* pcrel_offset */
506 /* Like R_PPC_ADDR32, but used when setting global offset table
508 HOWTO (R_PPC_GLOB_DAT
, /* type */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
512 FALSE
, /* pc_relative */
514 complain_overflow_dont
, /* complain_on_overflow */
515 ppc_elf_unhandled_reloc
, /* special_function */
516 "R_PPC_GLOB_DAT", /* name */
517 FALSE
, /* partial_inplace */
519 0xffffffff, /* dst_mask */
520 FALSE
), /* pcrel_offset */
522 /* Marks a procedure linkage table entry for a symbol. */
523 HOWTO (R_PPC_JMP_SLOT
, /* type */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
527 FALSE
, /* pc_relative */
529 complain_overflow_dont
, /* complain_on_overflow */
530 ppc_elf_unhandled_reloc
, /* special_function */
531 "R_PPC_JMP_SLOT", /* name */
532 FALSE
, /* partial_inplace */
535 FALSE
), /* pcrel_offset */
537 /* Used only by the dynamic linker. When the object is run, this
538 longword is set to the load address of the object, plus the
540 HOWTO (R_PPC_RELATIVE
, /* type */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
544 FALSE
, /* pc_relative */
546 complain_overflow_dont
, /* complain_on_overflow */
547 bfd_elf_generic_reloc
, /* special_function */
548 "R_PPC_RELATIVE", /* name */
549 FALSE
, /* partial_inplace */
551 0xffffffff, /* dst_mask */
552 FALSE
), /* pcrel_offset */
554 /* Like R_PPC_REL24, but uses the value of the symbol within the
555 object rather than the final value. Normally used for
556 _GLOBAL_OFFSET_TABLE_. */
557 HOWTO (R_PPC_LOCAL24PC
, /* type */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
561 TRUE
, /* pc_relative */
563 complain_overflow_signed
, /* complain_on_overflow */
564 bfd_elf_generic_reloc
, /* special_function */
565 "R_PPC_LOCAL24PC", /* name */
566 FALSE
, /* partial_inplace */
568 0x3fffffc, /* dst_mask */
569 TRUE
), /* pcrel_offset */
571 /* Like R_PPC_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC_UADDR32
, /* type */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
576 FALSE
, /* pc_relative */
578 complain_overflow_dont
, /* complain_on_overflow */
579 bfd_elf_generic_reloc
, /* special_function */
580 "R_PPC_UADDR32", /* name */
581 FALSE
, /* partial_inplace */
583 0xffffffff, /* dst_mask */
584 FALSE
), /* pcrel_offset */
586 /* Like R_PPC_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC_UADDR16
, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE
, /* pc_relative */
593 complain_overflow_bitfield
, /* complain_on_overflow */
594 bfd_elf_generic_reloc
, /* special_function */
595 "R_PPC_UADDR16", /* name */
596 FALSE
, /* partial_inplace */
598 0xffff, /* dst_mask */
599 FALSE
), /* pcrel_offset */
601 /* 32-bit PC relative */
602 HOWTO (R_PPC_REL32
, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 TRUE
, /* pc_relative */
608 complain_overflow_dont
, /* complain_on_overflow */
609 bfd_elf_generic_reloc
, /* special_function */
610 "R_PPC_REL32", /* name */
611 FALSE
, /* partial_inplace */
613 0xffffffff, /* dst_mask */
614 TRUE
), /* pcrel_offset */
616 /* 32-bit relocation to the symbol's procedure linkage table.
617 FIXME: not supported. */
618 HOWTO (R_PPC_PLT32
, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE
, /* pc_relative */
624 complain_overflow_dont
, /* complain_on_overflow */
625 ppc_elf_unhandled_reloc
, /* special_function */
626 "R_PPC_PLT32", /* name */
627 FALSE
, /* partial_inplace */
630 FALSE
), /* pcrel_offset */
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: not supported. */
634 HOWTO (R_PPC_PLTREL32
, /* type */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
638 TRUE
, /* pc_relative */
640 complain_overflow_dont
, /* complain_on_overflow */
641 ppc_elf_unhandled_reloc
, /* special_function */
642 "R_PPC_PLTREL32", /* name */
643 FALSE
, /* partial_inplace */
646 TRUE
), /* pcrel_offset */
648 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
650 HOWTO (R_PPC_PLT16_LO
, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE
, /* pc_relative */
656 complain_overflow_dont
, /* complain_on_overflow */
657 ppc_elf_unhandled_reloc
, /* special_function */
658 "R_PPC_PLT16_LO", /* name */
659 FALSE
, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE
), /* pcrel_offset */
664 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
666 HOWTO (R_PPC_PLT16_HI
, /* type */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE
, /* pc_relative */
672 complain_overflow_dont
, /* complain_on_overflow */
673 ppc_elf_unhandled_reloc
, /* special_function */
674 "R_PPC_PLT16_HI", /* name */
675 FALSE
, /* partial_inplace */
677 0xffff, /* dst_mask */
678 FALSE
), /* pcrel_offset */
680 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
682 HOWTO (R_PPC_PLT16_HA
, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE
, /* pc_relative */
688 complain_overflow_dont
, /* complain_on_overflow */
689 ppc_elf_unhandled_reloc
, /* special_function */
690 "R_PPC_PLT16_HA", /* name */
691 FALSE
, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE
), /* pcrel_offset */
696 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
698 HOWTO (R_PPC_SDAREL16
, /* type */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
702 FALSE
, /* pc_relative */
704 complain_overflow_signed
, /* complain_on_overflow */
705 ppc_elf_unhandled_reloc
, /* special_function */
706 "R_PPC_SDAREL16", /* name */
707 FALSE
, /* partial_inplace */
709 0xffff, /* dst_mask */
710 FALSE
), /* pcrel_offset */
712 /* 16-bit section relative relocation. */
713 HOWTO (R_PPC_SECTOFF
, /* type */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
717 FALSE
, /* pc_relative */
719 complain_overflow_signed
, /* complain_on_overflow */
720 ppc_elf_unhandled_reloc
, /* special_function */
721 "R_PPC_SECTOFF", /* name */
722 FALSE
, /* partial_inplace */
724 0xffff, /* dst_mask */
725 FALSE
), /* pcrel_offset */
727 /* 16-bit lower half section relative relocation. */
728 HOWTO (R_PPC_SECTOFF_LO
, /* type */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
732 FALSE
, /* pc_relative */
734 complain_overflow_dont
, /* complain_on_overflow */
735 ppc_elf_unhandled_reloc
, /* special_function */
736 "R_PPC_SECTOFF_LO", /* name */
737 FALSE
, /* partial_inplace */
739 0xffff, /* dst_mask */
740 FALSE
), /* pcrel_offset */
742 /* 16-bit upper half section relative relocation. */
743 HOWTO (R_PPC_SECTOFF_HI
, /* type */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
747 FALSE
, /* pc_relative */
749 complain_overflow_dont
, /* complain_on_overflow */
750 ppc_elf_unhandled_reloc
, /* special_function */
751 "R_PPC_SECTOFF_HI", /* name */
752 FALSE
, /* partial_inplace */
754 0xffff, /* dst_mask */
755 FALSE
), /* pcrel_offset */
757 /* 16-bit upper half adjusted section relative relocation. */
758 HOWTO (R_PPC_SECTOFF_HA
, /* type */
760 1, /* size (0 = byte, 1 = short, 2 = long) */
762 FALSE
, /* pc_relative */
764 complain_overflow_dont
, /* complain_on_overflow */
765 ppc_elf_unhandled_reloc
, /* special_function */
766 "R_PPC_SECTOFF_HA", /* name */
767 FALSE
, /* partial_inplace */
769 0xffff, /* dst_mask */
770 FALSE
), /* pcrel_offset */
772 /* Marker relocs for TLS. */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
777 FALSE
, /* pc_relative */
779 complain_overflow_dont
, /* complain_on_overflow */
780 bfd_elf_generic_reloc
, /* special_function */
781 "R_PPC_TLS", /* name */
782 FALSE
, /* partial_inplace */
785 FALSE
), /* pcrel_offset */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
791 FALSE
, /* pc_relative */
793 complain_overflow_dont
, /* complain_on_overflow */
794 bfd_elf_generic_reloc
, /* special_function */
795 "R_PPC_TLSGD", /* name */
796 FALSE
, /* partial_inplace */
799 FALSE
), /* pcrel_offset */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
805 FALSE
, /* pc_relative */
807 complain_overflow_dont
, /* complain_on_overflow */
808 bfd_elf_generic_reloc
, /* special_function */
809 "R_PPC_TLSLD", /* name */
810 FALSE
, /* partial_inplace */
813 FALSE
), /* pcrel_offset */
815 /* Computes the load module index of the load module that contains the
816 definition of its TLS sym. */
817 HOWTO (R_PPC_DTPMOD32
,
819 2, /* size (0 = byte, 1 = short, 2 = long) */
821 FALSE
, /* pc_relative */
823 complain_overflow_dont
, /* complain_on_overflow */
824 ppc_elf_unhandled_reloc
, /* special_function */
825 "R_PPC_DTPMOD32", /* name */
826 FALSE
, /* partial_inplace */
828 0xffffffff, /* dst_mask */
829 FALSE
), /* pcrel_offset */
831 /* Computes a dtv-relative displacement, the difference between the value
832 of sym+add and the base address of the thread-local storage block that
833 contains the definition of sym, minus 0x8000. */
834 HOWTO (R_PPC_DTPREL32
,
836 2, /* size (0 = byte, 1 = short, 2 = long) */
838 FALSE
, /* pc_relative */
840 complain_overflow_dont
, /* complain_on_overflow */
841 ppc_elf_unhandled_reloc
, /* special_function */
842 "R_PPC_DTPREL32", /* name */
843 FALSE
, /* partial_inplace */
845 0xffffffff, /* dst_mask */
846 FALSE
), /* pcrel_offset */
848 /* A 16 bit dtprel reloc. */
849 HOWTO (R_PPC_DTPREL16
,
851 1, /* size (0 = byte, 1 = short, 2 = long) */
853 FALSE
, /* pc_relative */
855 complain_overflow_signed
, /* complain_on_overflow */
856 ppc_elf_unhandled_reloc
, /* special_function */
857 "R_PPC_DTPREL16", /* name */
858 FALSE
, /* partial_inplace */
860 0xffff, /* dst_mask */
861 FALSE
), /* pcrel_offset */
863 /* Like DTPREL16, but no overflow. */
864 HOWTO (R_PPC_DTPREL16_LO
,
866 1, /* size (0 = byte, 1 = short, 2 = long) */
868 FALSE
, /* pc_relative */
870 complain_overflow_dont
, /* complain_on_overflow */
871 ppc_elf_unhandled_reloc
, /* special_function */
872 "R_PPC_DTPREL16_LO", /* name */
873 FALSE
, /* partial_inplace */
875 0xffff, /* dst_mask */
876 FALSE
), /* pcrel_offset */
878 /* Like DTPREL16_LO, but next higher group of 16 bits. */
879 HOWTO (R_PPC_DTPREL16_HI
,
881 1, /* size (0 = byte, 1 = short, 2 = long) */
883 FALSE
, /* pc_relative */
885 complain_overflow_dont
, /* complain_on_overflow */
886 ppc_elf_unhandled_reloc
, /* special_function */
887 "R_PPC_DTPREL16_HI", /* name */
888 FALSE
, /* partial_inplace */
890 0xffff, /* dst_mask */
891 FALSE
), /* pcrel_offset */
893 /* Like DTPREL16_HI, but adjust for low 16 bits. */
894 HOWTO (R_PPC_DTPREL16_HA
,
896 1, /* size (0 = byte, 1 = short, 2 = long) */
898 FALSE
, /* pc_relative */
900 complain_overflow_dont
, /* complain_on_overflow */
901 ppc_elf_unhandled_reloc
, /* special_function */
902 "R_PPC_DTPREL16_HA", /* name */
903 FALSE
, /* partial_inplace */
905 0xffff, /* dst_mask */
906 FALSE
), /* pcrel_offset */
908 /* Computes a tp-relative displacement, the difference between the value of
909 sym+add and the value of the thread pointer (r13). */
910 HOWTO (R_PPC_TPREL32
,
912 2, /* size (0 = byte, 1 = short, 2 = long) */
914 FALSE
, /* pc_relative */
916 complain_overflow_dont
, /* complain_on_overflow */
917 ppc_elf_unhandled_reloc
, /* special_function */
918 "R_PPC_TPREL32", /* name */
919 FALSE
, /* partial_inplace */
921 0xffffffff, /* dst_mask */
922 FALSE
), /* pcrel_offset */
924 /* A 16 bit tprel reloc. */
925 HOWTO (R_PPC_TPREL16
,
927 1, /* size (0 = byte, 1 = short, 2 = long) */
929 FALSE
, /* pc_relative */
931 complain_overflow_signed
, /* complain_on_overflow */
932 ppc_elf_unhandled_reloc
, /* special_function */
933 "R_PPC_TPREL16", /* name */
934 FALSE
, /* partial_inplace */
936 0xffff, /* dst_mask */
937 FALSE
), /* pcrel_offset */
939 /* Like TPREL16, but no overflow. */
940 HOWTO (R_PPC_TPREL16_LO
,
942 1, /* size (0 = byte, 1 = short, 2 = long) */
944 FALSE
, /* pc_relative */
946 complain_overflow_dont
, /* complain_on_overflow */
947 ppc_elf_unhandled_reloc
, /* special_function */
948 "R_PPC_TPREL16_LO", /* name */
949 FALSE
, /* partial_inplace */
951 0xffff, /* dst_mask */
952 FALSE
), /* pcrel_offset */
954 /* Like TPREL16_LO, but next higher group of 16 bits. */
955 HOWTO (R_PPC_TPREL16_HI
,
957 1, /* size (0 = byte, 1 = short, 2 = long) */
959 FALSE
, /* pc_relative */
961 complain_overflow_dont
, /* complain_on_overflow */
962 ppc_elf_unhandled_reloc
, /* special_function */
963 "R_PPC_TPREL16_HI", /* name */
964 FALSE
, /* partial_inplace */
966 0xffff, /* dst_mask */
967 FALSE
), /* pcrel_offset */
969 /* Like TPREL16_HI, but adjust for low 16 bits. */
970 HOWTO (R_PPC_TPREL16_HA
,
972 1, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE
, /* pc_relative */
976 complain_overflow_dont
, /* complain_on_overflow */
977 ppc_elf_unhandled_reloc
, /* special_function */
978 "R_PPC_TPREL16_HA", /* name */
979 FALSE
, /* partial_inplace */
981 0xffff, /* dst_mask */
982 FALSE
), /* pcrel_offset */
984 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
985 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
986 to the first entry. */
987 HOWTO (R_PPC_GOT_TLSGD16
,
989 1, /* size (0 = byte, 1 = short, 2 = long) */
991 FALSE
, /* pc_relative */
993 complain_overflow_signed
, /* complain_on_overflow */
994 ppc_elf_unhandled_reloc
, /* special_function */
995 "R_PPC_GOT_TLSGD16", /* name */
996 FALSE
, /* partial_inplace */
998 0xffff, /* dst_mask */
999 FALSE
), /* pcrel_offset */
1001 /* Like GOT_TLSGD16, but no overflow. */
1002 HOWTO (R_PPC_GOT_TLSGD16_LO
,
1004 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 FALSE
, /* pc_relative */
1008 complain_overflow_dont
, /* complain_on_overflow */
1009 ppc_elf_unhandled_reloc
, /* special_function */
1010 "R_PPC_GOT_TLSGD16_LO", /* name */
1011 FALSE
, /* partial_inplace */
1013 0xffff, /* dst_mask */
1014 FALSE
), /* pcrel_offset */
1016 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1017 HOWTO (R_PPC_GOT_TLSGD16_HI
,
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE
, /* pc_relative */
1023 complain_overflow_dont
, /* complain_on_overflow */
1024 ppc_elf_unhandled_reloc
, /* special_function */
1025 "R_PPC_GOT_TLSGD16_HI", /* name */
1026 FALSE
, /* partial_inplace */
1028 0xffff, /* dst_mask */
1029 FALSE
), /* pcrel_offset */
1031 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1032 HOWTO (R_PPC_GOT_TLSGD16_HA
,
1033 16, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 FALSE
, /* pc_relative */
1038 complain_overflow_dont
, /* complain_on_overflow */
1039 ppc_elf_unhandled_reloc
, /* special_function */
1040 "R_PPC_GOT_TLSGD16_HA", /* name */
1041 FALSE
, /* partial_inplace */
1043 0xffff, /* dst_mask */
1044 FALSE
), /* pcrel_offset */
1046 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1047 with values (sym+add)@dtpmod and zero, and computes the offset to the
1049 HOWTO (R_PPC_GOT_TLSLD16
,
1051 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 FALSE
, /* pc_relative */
1055 complain_overflow_signed
, /* complain_on_overflow */
1056 ppc_elf_unhandled_reloc
, /* special_function */
1057 "R_PPC_GOT_TLSLD16", /* name */
1058 FALSE
, /* partial_inplace */
1060 0xffff, /* dst_mask */
1061 FALSE
), /* pcrel_offset */
1063 /* Like GOT_TLSLD16, but no overflow. */
1064 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1066 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 FALSE
, /* pc_relative */
1070 complain_overflow_dont
, /* complain_on_overflow */
1071 ppc_elf_unhandled_reloc
, /* special_function */
1072 "R_PPC_GOT_TLSLD16_LO", /* name */
1073 FALSE
, /* partial_inplace */
1075 0xffff, /* dst_mask */
1076 FALSE
), /* pcrel_offset */
1078 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1079 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 FALSE
, /* pc_relative */
1085 complain_overflow_dont
, /* complain_on_overflow */
1086 ppc_elf_unhandled_reloc
, /* special_function */
1087 "R_PPC_GOT_TLSLD16_HI", /* name */
1088 FALSE
, /* partial_inplace */
1090 0xffff, /* dst_mask */
1091 FALSE
), /* pcrel_offset */
1093 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1094 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1095 16, /* rightshift */
1096 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 FALSE
, /* pc_relative */
1100 complain_overflow_dont
, /* complain_on_overflow */
1101 ppc_elf_unhandled_reloc
, /* special_function */
1102 "R_PPC_GOT_TLSLD16_HA", /* name */
1103 FALSE
, /* partial_inplace */
1105 0xffff, /* dst_mask */
1106 FALSE
), /* pcrel_offset */
1108 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1109 the offset to the entry. */
1110 HOWTO (R_PPC_GOT_DTPREL16
,
1112 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 FALSE
, /* pc_relative */
1116 complain_overflow_signed
, /* complain_on_overflow */
1117 ppc_elf_unhandled_reloc
, /* special_function */
1118 "R_PPC_GOT_DTPREL16", /* name */
1119 FALSE
, /* partial_inplace */
1121 0xffff, /* dst_mask */
1122 FALSE
), /* pcrel_offset */
1124 /* Like GOT_DTPREL16, but no overflow. */
1125 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1127 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 FALSE
, /* pc_relative */
1131 complain_overflow_dont
, /* complain_on_overflow */
1132 ppc_elf_unhandled_reloc
, /* special_function */
1133 "R_PPC_GOT_DTPREL16_LO", /* name */
1134 FALSE
, /* partial_inplace */
1136 0xffff, /* dst_mask */
1137 FALSE
), /* pcrel_offset */
1139 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1140 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1141 16, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 FALSE
, /* pc_relative */
1146 complain_overflow_dont
, /* complain_on_overflow */
1147 ppc_elf_unhandled_reloc
, /* special_function */
1148 "R_PPC_GOT_DTPREL16_HI", /* name */
1149 FALSE
, /* partial_inplace */
1151 0xffff, /* dst_mask */
1152 FALSE
), /* pcrel_offset */
1154 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1155 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1156 16, /* rightshift */
1157 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 FALSE
, /* pc_relative */
1161 complain_overflow_dont
, /* complain_on_overflow */
1162 ppc_elf_unhandled_reloc
, /* special_function */
1163 "R_PPC_GOT_DTPREL16_HA", /* name */
1164 FALSE
, /* partial_inplace */
1166 0xffff, /* dst_mask */
1167 FALSE
), /* pcrel_offset */
1169 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1170 offset to the entry. */
1171 HOWTO (R_PPC_GOT_TPREL16
,
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 FALSE
, /* pc_relative */
1177 complain_overflow_signed
, /* complain_on_overflow */
1178 ppc_elf_unhandled_reloc
, /* special_function */
1179 "R_PPC_GOT_TPREL16", /* name */
1180 FALSE
, /* partial_inplace */
1182 0xffff, /* dst_mask */
1183 FALSE
), /* pcrel_offset */
1185 /* Like GOT_TPREL16, but no overflow. */
1186 HOWTO (R_PPC_GOT_TPREL16_LO
,
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 FALSE
, /* pc_relative */
1192 complain_overflow_dont
, /* complain_on_overflow */
1193 ppc_elf_unhandled_reloc
, /* special_function */
1194 "R_PPC_GOT_TPREL16_LO", /* name */
1195 FALSE
, /* partial_inplace */
1197 0xffff, /* dst_mask */
1198 FALSE
), /* pcrel_offset */
1200 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1201 HOWTO (R_PPC_GOT_TPREL16_HI
,
1202 16, /* rightshift */
1203 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 FALSE
, /* pc_relative */
1207 complain_overflow_dont
, /* complain_on_overflow */
1208 ppc_elf_unhandled_reloc
, /* special_function */
1209 "R_PPC_GOT_TPREL16_HI", /* name */
1210 FALSE
, /* partial_inplace */
1212 0xffff, /* dst_mask */
1213 FALSE
), /* pcrel_offset */
1215 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1216 HOWTO (R_PPC_GOT_TPREL16_HA
,
1217 16, /* rightshift */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 FALSE
, /* pc_relative */
1222 complain_overflow_dont
, /* complain_on_overflow */
1223 ppc_elf_unhandled_reloc
, /* special_function */
1224 "R_PPC_GOT_TPREL16_HA", /* name */
1225 FALSE
, /* partial_inplace */
1227 0xffff, /* dst_mask */
1228 FALSE
), /* pcrel_offset */
1230 /* The remaining relocs are from the Embedded ELF ABI, and are not
1231 in the SVR4 ELF ABI. */
1233 /* 32 bit value resulting from the addend minus the symbol. */
1234 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1236 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 FALSE
, /* pc_relative */
1240 complain_overflow_dont
, /* complain_on_overflow */
1241 ppc_elf_unhandled_reloc
, /* special_function */
1242 "R_PPC_EMB_NADDR32", /* name */
1243 FALSE
, /* partial_inplace */
1245 0xffffffff, /* dst_mask */
1246 FALSE
), /* pcrel_offset */
1248 /* 16 bit value resulting from the addend minus the symbol. */
1249 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1251 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 FALSE
, /* pc_relative */
1255 complain_overflow_signed
, /* complain_on_overflow */
1256 ppc_elf_unhandled_reloc
, /* special_function */
1257 "R_PPC_EMB_NADDR16", /* name */
1258 FALSE
, /* partial_inplace */
1260 0xffff, /* dst_mask */
1261 FALSE
), /* pcrel_offset */
1263 /* 16 bit value resulting from the addend minus the symbol. */
1264 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1268 FALSE
, /* pc_relative */
1270 complain_overflow_dont
,/* complain_on_overflow */
1271 ppc_elf_unhandled_reloc
, /* special_function */
1272 "R_PPC_EMB_ADDR16_LO", /* name */
1273 FALSE
, /* partial_inplace */
1275 0xffff, /* dst_mask */
1276 FALSE
), /* pcrel_offset */
1278 /* The high order 16 bits of the addend minus the symbol. */
1279 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1280 16, /* rightshift */
1281 1, /* size (0 = byte, 1 = short, 2 = long) */
1283 FALSE
, /* pc_relative */
1285 complain_overflow_dont
, /* complain_on_overflow */
1286 ppc_elf_unhandled_reloc
, /* special_function */
1287 "R_PPC_EMB_NADDR16_HI", /* name */
1288 FALSE
, /* partial_inplace */
1290 0xffff, /* dst_mask */
1291 FALSE
), /* pcrel_offset */
1293 /* The high order 16 bits of the result of the addend minus the address,
1294 plus 1 if the contents of the low 16 bits, treated as a signed number,
1296 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1297 16, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE
, /* pc_relative */
1302 complain_overflow_dont
, /* complain_on_overflow */
1303 ppc_elf_unhandled_reloc
, /* special_function */
1304 "R_PPC_EMB_NADDR16_HA", /* name */
1305 FALSE
, /* partial_inplace */
1307 0xffff, /* dst_mask */
1308 FALSE
), /* pcrel_offset */
1310 /* 16 bit value resulting from allocating a 4 byte word to hold an
1311 address in the .sdata section, and returning the offset from
1312 _SDA_BASE_ for that relocation. */
1313 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1317 FALSE
, /* pc_relative */
1319 complain_overflow_signed
, /* complain_on_overflow */
1320 ppc_elf_unhandled_reloc
, /* special_function */
1321 "R_PPC_EMB_SDAI16", /* name */
1322 FALSE
, /* partial_inplace */
1324 0xffff, /* dst_mask */
1325 FALSE
), /* pcrel_offset */
1327 /* 16 bit value resulting from allocating a 4 byte word to hold an
1328 address in the .sdata2 section, and returning the offset from
1329 _SDA2_BASE_ for that relocation. */
1330 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1332 1, /* size (0 = byte, 1 = short, 2 = long) */
1334 FALSE
, /* pc_relative */
1336 complain_overflow_signed
, /* complain_on_overflow */
1337 ppc_elf_unhandled_reloc
, /* special_function */
1338 "R_PPC_EMB_SDA2I16", /* name */
1339 FALSE
, /* partial_inplace */
1341 0xffff, /* dst_mask */
1342 FALSE
), /* pcrel_offset */
1344 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1345 small data items. */
1346 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 FALSE
, /* pc_relative */
1352 complain_overflow_signed
, /* complain_on_overflow */
1353 ppc_elf_unhandled_reloc
, /* special_function */
1354 "R_PPC_EMB_SDA2REL", /* name */
1355 FALSE
, /* partial_inplace */
1357 0xffff, /* dst_mask */
1358 FALSE
), /* pcrel_offset */
1360 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1361 signed offset from the appropriate base, and filling in the register
1362 field with the appropriate register (0, 2, or 13). */
1363 HOWTO (R_PPC_EMB_SDA21
, /* type */
1365 2, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE
, /* pc_relative */
1369 complain_overflow_signed
, /* complain_on_overflow */
1370 ppc_elf_unhandled_reloc
, /* special_function */
1371 "R_PPC_EMB_SDA21", /* name */
1372 FALSE
, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE
), /* pcrel_offset */
1377 /* Relocation not handled: R_PPC_EMB_MRKREF */
1378 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1379 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1380 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1382 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1384 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1385 in the 16 bit signed offset from the appropriate base, and filling in the
1386 register field with the appropriate register (0, 2, or 13). */
1387 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1389 1, /* size (0 = byte, 1 = short, 2 = long) */
1391 FALSE
, /* pc_relative */
1393 complain_overflow_signed
, /* complain_on_overflow */
1394 ppc_elf_unhandled_reloc
, /* special_function */
1395 "R_PPC_EMB_RELSDA", /* name */
1396 FALSE
, /* partial_inplace */
1398 0xffff, /* dst_mask */
1399 FALSE
), /* pcrel_offset */
1401 /* A relative 8 bit branch. */
1402 HOWTO (R_PPC_VLE_REL8
, /* type */
1404 1, /* size (0 = byte, 1 = short, 2 = long) */
1406 TRUE
, /* pc_relative */
1408 complain_overflow_signed
, /* complain_on_overflow */
1409 bfd_elf_generic_reloc
, /* special_function */
1410 "R_PPC_VLE_REL8", /* name */
1411 FALSE
, /* partial_inplace */
1413 0xff, /* dst_mask */
1414 TRUE
), /* pcrel_offset */
1416 /* A relative 15 bit branch. */
1417 HOWTO (R_PPC_VLE_REL15
, /* type */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 TRUE
, /* pc_relative */
1423 complain_overflow_signed
, /* complain_on_overflow */
1424 bfd_elf_generic_reloc
, /* special_function */
1425 "R_PPC_VLE_REL15", /* name */
1426 FALSE
, /* partial_inplace */
1428 0xfffe, /* dst_mask */
1429 TRUE
), /* pcrel_offset */
1431 /* A relative 24 bit branch. */
1432 HOWTO (R_PPC_VLE_REL24
, /* type */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 TRUE
, /* pc_relative */
1438 complain_overflow_signed
, /* complain_on_overflow */
1439 bfd_elf_generic_reloc
, /* special_function */
1440 "R_PPC_VLE_REL24", /* name */
1441 FALSE
, /* partial_inplace */
1443 0x1fffffe, /* dst_mask */
1444 TRUE
), /* pcrel_offset */
1446 /* The 16 LSBS in split16a format. */
1447 HOWTO (R_PPC_VLE_LO16A
, /* type */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE
, /* pc_relative */
1453 complain_overflow_dont
, /* complain_on_overflow */
1454 ppc_elf_unhandled_reloc
, /* special_function */
1455 "R_PPC_VLE_LO16A", /* name */
1456 FALSE
, /* partial_inplace */
1458 0x1f007ff, /* dst_mask */
1459 FALSE
), /* pcrel_offset */
1461 /* The 16 LSBS in split16d format. */
1462 HOWTO (R_PPC_VLE_LO16D
, /* type */
1464 2, /* size (0 = byte, 1 = short, 2 = long) */
1466 FALSE
, /* pc_relative */
1468 complain_overflow_dont
, /* complain_on_overflow */
1469 ppc_elf_unhandled_reloc
, /* special_function */
1470 "R_PPC_VLE_LO16D", /* name */
1471 FALSE
, /* partial_inplace */
1473 0x1f07ff, /* dst_mask */
1474 FALSE
), /* pcrel_offset */
1476 /* Bits 16-31 split16a format. */
1477 HOWTO (R_PPC_VLE_HI16A
, /* type */
1478 16, /* rightshift */
1479 2, /* size (0 = byte, 1 = short, 2 = long) */
1481 FALSE
, /* pc_relative */
1483 complain_overflow_dont
, /* complain_on_overflow */
1484 ppc_elf_unhandled_reloc
, /* special_function */
1485 "R_PPC_VLE_HI16A", /* name */
1486 FALSE
, /* partial_inplace */
1488 0x1f007ff, /* dst_mask */
1489 FALSE
), /* pcrel_offset */
1491 /* Bits 16-31 split16d format. */
1492 HOWTO (R_PPC_VLE_HI16D
, /* type */
1493 16, /* rightshift */
1494 2, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE
, /* pc_relative */
1498 complain_overflow_dont
, /* complain_on_overflow */
1499 ppc_elf_unhandled_reloc
, /* special_function */
1500 "R_PPC_VLE_HI16D", /* name */
1501 FALSE
, /* partial_inplace */
1503 0x1f07ff, /* dst_mask */
1504 FALSE
), /* pcrel_offset */
1506 /* Bits 16-31 (High Adjusted) in split16a format. */
1507 HOWTO (R_PPC_VLE_HA16A
, /* type */
1508 16, /* rightshift */
1509 2, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE
, /* pc_relative */
1513 complain_overflow_dont
, /* complain_on_overflow */
1514 ppc_elf_unhandled_reloc
, /* special_function */
1515 "R_PPC_VLE_HA16A", /* name */
1516 FALSE
, /* partial_inplace */
1518 0x1f007ff, /* dst_mask */
1519 FALSE
), /* pcrel_offset */
1521 /* Bits 16-31 (High Adjusted) in split16d format. */
1522 HOWTO (R_PPC_VLE_HA16D
, /* type */
1523 16, /* rightshift */
1524 2, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE
, /* pc_relative */
1528 complain_overflow_dont
, /* complain_on_overflow */
1529 ppc_elf_unhandled_reloc
, /* special_function */
1530 "R_PPC_VLE_HA16D", /* name */
1531 FALSE
, /* partial_inplace */
1533 0x1f07ff, /* dst_mask */
1534 FALSE
), /* pcrel_offset */
1536 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1537 instructions. If the register base is 0 then the linker changes
1538 the e_add16i to an e_li instruction. */
1539 HOWTO (R_PPC_VLE_SDA21
, /* type */
1541 2, /* size (0 = byte, 1 = short, 2 = long) */
1543 FALSE
, /* pc_relative */
1545 complain_overflow_signed
, /* complain_on_overflow */
1546 ppc_elf_unhandled_reloc
, /* special_function */
1547 "R_PPC_VLE_SDA21", /* name */
1548 FALSE
, /* partial_inplace */
1550 0xffff, /* dst_mask */
1551 FALSE
), /* pcrel_offset */
1553 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1554 HOWTO (R_PPC_VLE_SDA21_LO
, /* type */
1556 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 FALSE
, /* pc_relative */
1560 complain_overflow_dont
, /* complain_on_overflow */
1561 ppc_elf_unhandled_reloc
, /* special_function */
1562 "R_PPC_VLE_SDA21_LO", /* name */
1563 FALSE
, /* partial_inplace */
1565 0xffff, /* dst_mask */
1566 FALSE
), /* pcrel_offset */
1568 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1569 HOWTO (R_PPC_VLE_SDAREL_LO16A
,/* type */
1571 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 FALSE
, /* pc_relative */
1575 complain_overflow_dont
, /* complain_on_overflow */
1576 ppc_elf_unhandled_reloc
, /* special_function */
1577 "R_PPC_VLE_SDAREL_LO16A", /* name */
1578 FALSE
, /* partial_inplace */
1580 0x1f007ff, /* dst_mask */
1581 FALSE
), /* pcrel_offset */
1583 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1584 HOWTO (R_PPC_VLE_SDAREL_LO16D
, /* type */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE
, /* pc_relative */
1590 complain_overflow_dont
, /* complain_on_overflow */
1591 ppc_elf_unhandled_reloc
, /* special_function */
1592 "R_PPC_VLE_SDAREL_LO16D", /* name */
1593 FALSE
, /* partial_inplace */
1595 0x1f07ff, /* dst_mask */
1596 FALSE
), /* pcrel_offset */
1598 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1599 HOWTO (R_PPC_VLE_SDAREL_HI16A
, /* type */
1600 16, /* rightshift */
1601 2, /* size (0 = byte, 1 = short, 2 = long) */
1603 FALSE
, /* pc_relative */
1605 complain_overflow_dont
, /* complain_on_overflow */
1606 ppc_elf_unhandled_reloc
, /* special_function */
1607 "R_PPC_VLE_SDAREL_HI16A", /* name */
1608 FALSE
, /* partial_inplace */
1610 0x1f007ff, /* dst_mask */
1611 FALSE
), /* pcrel_offset */
1613 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1614 HOWTO (R_PPC_VLE_SDAREL_HI16D
, /* type */
1615 16, /* rightshift */
1616 2, /* size (0 = byte, 1 = short, 2 = long) */
1618 FALSE
, /* pc_relative */
1620 complain_overflow_dont
, /* complain_on_overflow */
1621 ppc_elf_unhandled_reloc
, /* special_function */
1622 "R_PPC_VLE_SDAREL_HI16D", /* name */
1623 FALSE
, /* partial_inplace */
1625 0x1f07ff, /* dst_mask */
1626 FALSE
), /* pcrel_offset */
1628 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1629 HOWTO (R_PPC_VLE_SDAREL_HA16A
, /* type */
1630 16, /* rightshift */
1631 2, /* size (0 = byte, 1 = short, 2 = long) */
1633 FALSE
, /* pc_relative */
1635 complain_overflow_dont
, /* complain_on_overflow */
1636 ppc_elf_unhandled_reloc
, /* special_function */
1637 "R_PPC_VLE_SDAREL_HA16A", /* name */
1638 FALSE
, /* partial_inplace */
1640 0x1f007ff, /* dst_mask */
1641 FALSE
), /* pcrel_offset */
1643 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1644 HOWTO (R_PPC_VLE_SDAREL_HA16D
, /* type */
1645 16, /* rightshift */
1646 2, /* size (0 = byte, 1 = short, 2 = long) */
1648 FALSE
, /* pc_relative */
1650 complain_overflow_dont
, /* complain_on_overflow */
1651 ppc_elf_unhandled_reloc
, /* special_function */
1652 "R_PPC_VLE_SDAREL_HA16D", /* name */
1653 FALSE
, /* partial_inplace */
1655 0x1f07ff, /* dst_mask */
1656 FALSE
), /* pcrel_offset */
1658 HOWTO (R_PPC_IRELATIVE
, /* type */
1660 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 FALSE
, /* pc_relative */
1664 complain_overflow_dont
, /* complain_on_overflow */
1665 ppc_elf_unhandled_reloc
, /* special_function */
1666 "R_PPC_IRELATIVE", /* name */
1667 FALSE
, /* partial_inplace */
1669 0xffffffff, /* dst_mask */
1670 FALSE
), /* pcrel_offset */
1672 /* A 16 bit relative relocation. */
1673 HOWTO (R_PPC_REL16
, /* type */
1675 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 TRUE
, /* pc_relative */
1679 complain_overflow_signed
, /* complain_on_overflow */
1680 bfd_elf_generic_reloc
, /* special_function */
1681 "R_PPC_REL16", /* name */
1682 FALSE
, /* partial_inplace */
1684 0xffff, /* dst_mask */
1685 TRUE
), /* pcrel_offset */
1687 /* A 16 bit relative relocation without overflow. */
1688 HOWTO (R_PPC_REL16_LO
, /* type */
1690 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 TRUE
, /* pc_relative */
1694 complain_overflow_dont
,/* complain_on_overflow */
1695 bfd_elf_generic_reloc
, /* special_function */
1696 "R_PPC_REL16_LO", /* name */
1697 FALSE
, /* partial_inplace */
1699 0xffff, /* dst_mask */
1700 TRUE
), /* pcrel_offset */
1702 /* The high order 16 bits of a relative address. */
1703 HOWTO (R_PPC_REL16_HI
, /* type */
1704 16, /* rightshift */
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 TRUE
, /* pc_relative */
1709 complain_overflow_dont
, /* complain_on_overflow */
1710 bfd_elf_generic_reloc
, /* special_function */
1711 "R_PPC_REL16_HI", /* name */
1712 FALSE
, /* partial_inplace */
1714 0xffff, /* dst_mask */
1715 TRUE
), /* pcrel_offset */
1717 /* The high order 16 bits of a relative address, plus 1 if the contents of
1718 the low 16 bits, treated as a signed number, is negative. */
1719 HOWTO (R_PPC_REL16_HA
, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 TRUE
, /* pc_relative */
1725 complain_overflow_dont
, /* complain_on_overflow */
1726 ppc_elf_addr16_ha_reloc
, /* special_function */
1727 "R_PPC_REL16_HA", /* name */
1728 FALSE
, /* partial_inplace */
1730 0xffff, /* dst_mask */
1731 TRUE
), /* pcrel_offset */
1733 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1734 HOWTO (R_PPC_REL16DX_HA
, /* type */
1735 16, /* rightshift */
1736 2, /* size (0 = byte, 1 = short, 2 = long) */
1738 TRUE
, /* pc_relative */
1740 complain_overflow_signed
, /* complain_on_overflow */
1741 ppc_elf_addr16_ha_reloc
, /* special_function */
1742 "R_PPC_REL16DX_HA", /* name */
1743 FALSE
, /* partial_inplace */
1745 0x1fffc1, /* dst_mask */
1746 TRUE
), /* pcrel_offset */
1748 /* GNU extension to record C++ vtable hierarchy. */
1749 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1751 0, /* size (0 = byte, 1 = short, 2 = long) */
1753 FALSE
, /* pc_relative */
1755 complain_overflow_dont
, /* complain_on_overflow */
1756 NULL
, /* special_function */
1757 "R_PPC_GNU_VTINHERIT", /* name */
1758 FALSE
, /* partial_inplace */
1761 FALSE
), /* pcrel_offset */
1763 /* GNU extension to record C++ vtable member usage. */
1764 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1766 0, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE
, /* pc_relative */
1770 complain_overflow_dont
, /* complain_on_overflow */
1771 NULL
, /* special_function */
1772 "R_PPC_GNU_VTENTRY", /* name */
1773 FALSE
, /* partial_inplace */
1776 FALSE
), /* pcrel_offset */
1778 /* Phony reloc to handle AIX style TOC entries. */
1779 HOWTO (R_PPC_TOC16
, /* type */
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE
, /* pc_relative */
1785 complain_overflow_signed
, /* complain_on_overflow */
1786 ppc_elf_unhandled_reloc
, /* special_function */
1787 "R_PPC_TOC16", /* name */
1788 FALSE
, /* partial_inplace */
1790 0xffff, /* dst_mask */
1791 FALSE
), /* pcrel_offset */
1794 /* External 32-bit PPC structure for PRPSINFO. This structure is
1795 ABI-defined, thus we choose to use char arrays here in order to
1796 avoid dealing with different types in different architectures.
1798 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1799 most non-PPC architectures use `short int'.
1801 This structure will ultimately be written in the corefile's note
1802 section, as the PRPSINFO. */
1804 struct elf_external_ppc_linux_prpsinfo32
1806 char pr_state
; /* Numeric process state. */
1807 char pr_sname
; /* Char for pr_state. */
1808 char pr_zomb
; /* Zombie. */
1809 char pr_nice
; /* Nice val. */
1810 char pr_flag
[4]; /* Flags. */
1817 char pr_fname
[16]; /* Filename of executable. */
1818 char pr_psargs
[80]; /* Initial part of arg list. */
1821 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1822 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1825 swap_ppc_linux_prpsinfo32_out (bfd
*obfd
,
1826 const struct elf_internal_linux_prpsinfo
*from
,
1827 struct elf_external_ppc_linux_prpsinfo32
*to
)
1829 bfd_put_8 (obfd
, from
->pr_state
, &to
->pr_state
);
1830 bfd_put_8 (obfd
, from
->pr_sname
, &to
->pr_sname
);
1831 bfd_put_8 (obfd
, from
->pr_zomb
, &to
->pr_zomb
);
1832 bfd_put_8 (obfd
, from
->pr_nice
, &to
->pr_nice
);
1833 bfd_put_32 (obfd
, from
->pr_flag
, to
->pr_flag
);
1834 bfd_put_32 (obfd
, from
->pr_uid
, to
->pr_uid
);
1835 bfd_put_32 (obfd
, from
->pr_gid
, to
->pr_gid
);
1836 bfd_put_32 (obfd
, from
->pr_pid
, to
->pr_pid
);
1837 bfd_put_32 (obfd
, from
->pr_ppid
, to
->pr_ppid
);
1838 bfd_put_32 (obfd
, from
->pr_pgrp
, to
->pr_pgrp
);
1839 bfd_put_32 (obfd
, from
->pr_sid
, to
->pr_sid
);
1840 strncpy (to
->pr_fname
, from
->pr_fname
, sizeof (to
->pr_fname
));
1841 strncpy (to
->pr_psargs
, from
->pr_psargs
, sizeof (to
->pr_psargs
));
1844 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1847 ppc_elf_howto_init (void)
1849 unsigned int i
, type
;
1852 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1855 type
= ppc_elf_howto_raw
[i
].type
;
1856 if (type
>= (sizeof (ppc_elf_howto_table
)
1857 / sizeof (ppc_elf_howto_table
[0])))
1859 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1863 static reloc_howto_type
*
1864 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1865 bfd_reloc_code_real_type code
)
1867 enum elf_ppc_reloc_type r
;
1869 /* Initialize howto table if not already done. */
1870 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
1871 ppc_elf_howto_init ();
1878 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
1879 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
1880 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
1881 case BFD_RELOC_PPC64_ADDR16_DS
:
1882 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
1883 case BFD_RELOC_PPC64_ADDR16_LO_DS
:
1884 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
1885 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
1886 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
1887 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
1888 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
1889 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
1890 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
1891 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
1892 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
1893 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
1894 case BFD_RELOC_PPC64_GOT16_DS
:
1895 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
1896 case BFD_RELOC_PPC64_GOT16_LO_DS
:
1897 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
1898 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
1899 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
1900 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
1901 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
1902 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
1903 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
1904 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
1905 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
1906 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
1907 case BFD_RELOC_PPC64_PLT16_LO_DS
:
1908 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
1909 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
1910 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
1911 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
1912 case BFD_RELOC_PPC64_SECTOFF_DS
:
1913 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
1914 case BFD_RELOC_PPC64_SECTOFF_LO_DS
:
1915 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
1916 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
1917 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
1918 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
1919 case BFD_RELOC_PPC64_TOC16_DS
:
1920 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
1921 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
1922 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC_TLSGD
; break;
1923 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC_TLSLD
; break;
1924 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
1925 case BFD_RELOC_PPC64_TPREL16_DS
:
1926 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
1927 case BFD_RELOC_PPC64_TPREL16_LO_DS
:
1928 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
1929 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
1930 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
1931 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
1932 case BFD_RELOC_PPC64_DTPREL16_DS
:
1933 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
1934 case BFD_RELOC_PPC64_DTPREL16_LO_DS
:
1935 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
1936 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
1937 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
1938 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
1939 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
1943 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
1947 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
1951 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
1955 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
1956 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
1960 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
1961 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
1962 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
1963 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
1964 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
1965 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
1966 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
1967 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
1969 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
1970 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
1971 case BFD_RELOC_PPC_VLE_REL8
: r
= R_PPC_VLE_REL8
; break;
1972 case BFD_RELOC_PPC_VLE_REL15
: r
= R_PPC_VLE_REL15
; break;
1973 case BFD_RELOC_PPC_VLE_REL24
: r
= R_PPC_VLE_REL24
; break;
1974 case BFD_RELOC_PPC_VLE_LO16A
: r
= R_PPC_VLE_LO16A
; break;
1975 case BFD_RELOC_PPC_VLE_LO16D
: r
= R_PPC_VLE_LO16D
; break;
1976 case BFD_RELOC_PPC_VLE_HI16A
: r
= R_PPC_VLE_HI16A
; break;
1977 case BFD_RELOC_PPC_VLE_HI16D
: r
= R_PPC_VLE_HI16D
; break;
1978 case BFD_RELOC_PPC_VLE_HA16A
: r
= R_PPC_VLE_HA16A
; break;
1979 case BFD_RELOC_PPC_VLE_HA16D
: r
= R_PPC_VLE_HA16D
; break;
1980 case BFD_RELOC_PPC_VLE_SDA21
: r
= R_PPC_VLE_SDA21
; break;
1981 case BFD_RELOC_PPC_VLE_SDA21_LO
: r
= R_PPC_VLE_SDA21_LO
; break;
1982 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
1983 r
= R_PPC_VLE_SDAREL_LO16A
;
1985 case BFD_RELOC_PPC_VLE_SDAREL_LO16D
:
1986 r
= R_PPC_VLE_SDAREL_LO16D
;
1988 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
1989 r
= R_PPC_VLE_SDAREL_HI16A
;
1991 case BFD_RELOC_PPC_VLE_SDAREL_HI16D
:
1992 r
= R_PPC_VLE_SDAREL_HI16D
;
1994 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
1995 r
= R_PPC_VLE_SDAREL_HA16A
;
1997 case BFD_RELOC_PPC_VLE_SDAREL_HA16D
:
1998 r
= R_PPC_VLE_SDAREL_HA16D
;
2000 case BFD_RELOC_16_PCREL
: r
= R_PPC_REL16
; break;
2001 case BFD_RELOC_LO16_PCREL
: r
= R_PPC_REL16_LO
; break;
2002 case BFD_RELOC_HI16_PCREL
: r
= R_PPC_REL16_HI
; break;
2003 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC_REL16_HA
; break;
2004 case BFD_RELOC_PPC_REL16DX_HA
: r
= R_PPC_REL16DX_HA
; break;
2005 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
2006 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
2009 return ppc_elf_howto_table
[r
];
2012 static reloc_howto_type
*
2013 ppc_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2019 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
2021 if (ppc_elf_howto_raw
[i
].name
!= NULL
2022 && strcasecmp (ppc_elf_howto_raw
[i
].name
, r_name
) == 0)
2023 return &ppc_elf_howto_raw
[i
];
2028 /* Set the howto pointer for a PowerPC ELF reloc. */
2031 ppc_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
2033 Elf_Internal_Rela
*dst
)
2035 unsigned int r_type
;
2037 /* Initialize howto table if not already done. */
2038 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
2039 ppc_elf_howto_init ();
2041 r_type
= ELF32_R_TYPE (dst
->r_info
);
2042 if (r_type
>= R_PPC_max
)
2044 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2046 bfd_set_error (bfd_error_bad_value
);
2047 r_type
= R_PPC_NONE
;
2049 cache_ptr
->howto
= ppc_elf_howto_table
[r_type
];
2051 /* Just because the above assert didn't trigger doesn't mean that
2052 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2053 if (!cache_ptr
->howto
)
2055 _bfd_error_handler (_("%B: invalid relocation type %d"),
2057 bfd_set_error (bfd_error_bad_value
);
2059 cache_ptr
->howto
= ppc_elf_howto_table
[R_PPC_NONE
];
2063 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2065 static bfd_reloc_status_type
2066 ppc_elf_addr16_ha_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
2067 arelent
*reloc_entry
,
2069 void *data ATTRIBUTE_UNUSED
,
2070 asection
*input_section
,
2072 char **error_message ATTRIBUTE_UNUSED
)
2074 enum elf_ppc_reloc_type r_type
;
2076 bfd_size_type octets
;
2079 if (output_bfd
!= NULL
)
2081 reloc_entry
->address
+= input_section
->output_offset
;
2082 return bfd_reloc_ok
;
2085 reloc_entry
->addend
+= 0x8000;
2086 r_type
= reloc_entry
->howto
->type
;
2087 if (r_type
!= R_PPC_REL16DX_HA
)
2088 return bfd_reloc_continue
;
2091 if (!bfd_is_com_section (symbol
->section
))
2092 value
= symbol
->value
;
2093 value
+= (reloc_entry
->addend
2094 + symbol
->section
->output_offset
2095 + symbol
->section
->output_section
->vma
);
2096 value
-= (reloc_entry
->address
2097 + input_section
->output_offset
2098 + input_section
->output_section
->vma
);
2101 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2102 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2104 insn
|= (value
& 0xffc1) | ((value
& 0x3e) << 15);
2105 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2106 return bfd_reloc_ok
;
2109 static bfd_reloc_status_type
2110 ppc_elf_unhandled_reloc (bfd
*abfd
,
2111 arelent
*reloc_entry
,
2114 asection
*input_section
,
2116 char **error_message
)
2118 /* If this is a relocatable link (output_bfd test tells us), just
2119 call the generic function. Any adjustment will be done at final
2121 if (output_bfd
!= NULL
)
2122 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2123 input_section
, output_bfd
, error_message
);
2125 if (error_message
!= NULL
)
2127 static char buf
[60];
2128 sprintf (buf
, _("generic linker can't handle %s"),
2129 reloc_entry
->howto
->name
);
2130 *error_message
= buf
;
2132 return bfd_reloc_dangerous
;
2135 /* Sections created by the linker. */
2137 typedef struct elf_linker_section
2139 /* Pointer to the bfd section. */
2143 /* Associated bss section name. */
2144 const char *bss_name
;
2145 /* Associated symbol name. */
2146 const char *sym_name
;
2147 /* Associated symbol. */
2148 struct elf_link_hash_entry
*sym
;
2149 } elf_linker_section_t
;
2151 /* Linked list of allocated pointer entries. This hangs off of the
2152 symbol lists, and provides allows us to return different pointers,
2153 based on different addend's. */
2155 typedef struct elf_linker_section_pointers
2157 /* next allocated pointer for this symbol */
2158 struct elf_linker_section_pointers
*next
;
2159 /* offset of pointer from beginning of section */
2163 /* which linker section this is */
2164 elf_linker_section_t
*lsect
;
2165 } elf_linker_section_pointers_t
;
2167 struct ppc_elf_obj_tdata
2169 struct elf_obj_tdata elf
;
2171 /* A mapping from local symbols to offsets into the various linker
2172 sections added. This is index by the symbol index. */
2173 elf_linker_section_pointers_t
**linker_section_pointers
;
2175 /* Flags used to auto-detect plt type. */
2176 unsigned int makes_plt_call
: 1;
2177 unsigned int has_rel16
: 1;
2180 #define ppc_elf_tdata(bfd) \
2181 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2183 #define elf_local_ptr_offsets(bfd) \
2184 (ppc_elf_tdata (bfd)->linker_section_pointers)
2186 #define is_ppc_elf(bfd) \
2187 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2188 && elf_object_id (bfd) == PPC32_ELF_DATA)
2190 /* Override the generic function because we store some extras. */
2193 ppc_elf_mkobject (bfd
*abfd
)
2195 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc_elf_obj_tdata
),
2199 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2202 _bfd_elf_ppc_set_arch (bfd
*abfd
)
2204 unsigned long mach
= 0;
2206 unsigned char *contents
;
2208 if (abfd
->arch_info
->bits_per_word
== 32
2209 && bfd_big_endian (abfd
))
2212 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2213 if ((elf_section_data (s
)->this_hdr
.sh_flags
& SHF_PPC_VLE
) != 0)
2216 mach
= bfd_mach_ppc_vle
;
2221 s
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2222 if (s
!= NULL
&& bfd_malloc_and_get_section (abfd
, s
, &contents
))
2224 unsigned int apuinfo_size
= bfd_get_32 (abfd
, contents
+ 4);
2227 for (i
= 20; i
< apuinfo_size
+ 20 && i
+ 4 <= s
->size
; i
+= 4)
2229 unsigned int val
= bfd_get_32 (abfd
, contents
+ i
);
2232 case PPC_APUINFO_PMR
:
2233 case PPC_APUINFO_RFMCI
:
2235 mach
= bfd_mach_ppc_titan
;
2238 case PPC_APUINFO_ISEL
:
2239 case PPC_APUINFO_CACHELCK
:
2240 if (mach
== bfd_mach_ppc_titan
)
2241 mach
= bfd_mach_ppc_e500mc
;
2244 case PPC_APUINFO_SPE
:
2245 case PPC_APUINFO_EFS
:
2246 case PPC_APUINFO_BRLOCK
:
2247 if (mach
!= bfd_mach_ppc_vle
)
2248 mach
= bfd_mach_ppc_e500
;
2251 case PPC_APUINFO_VLE
:
2252 mach
= bfd_mach_ppc_vle
;
2263 if (mach
!= 0 && mach
!= -1ul)
2265 const bfd_arch_info_type
*arch
;
2267 for (arch
= abfd
->arch_info
->next
; arch
; arch
= arch
->next
)
2268 if (arch
->mach
== mach
)
2270 abfd
->arch_info
= arch
;
2277 /* Fix bad default arch selected for a 32 bit input bfd when the
2278 default is 64 bit. Also select arch based on apuinfo. */
2281 ppc_elf_object_p (bfd
*abfd
)
2283 if (!abfd
->arch_info
->the_default
)
2286 if (abfd
->arch_info
->bits_per_word
== 64)
2288 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2290 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
2292 /* Relies on arch after 64 bit default being 32 bit default. */
2293 abfd
->arch_info
= abfd
->arch_info
->next
;
2294 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
2297 return _bfd_elf_ppc_set_arch (abfd
);
2300 /* Function to set whether a module needs the -mrelocatable bit set. */
2303 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2305 BFD_ASSERT (!elf_flags_init (abfd
)
2306 || elf_elfheader (abfd
)->e_flags
== flags
);
2308 elf_elfheader (abfd
)->e_flags
= flags
;
2309 elf_flags_init (abfd
) = TRUE
;
2313 /* Support for core dump NOTE sections. */
2316 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2321 switch (note
->descsz
)
2326 case 268: /* Linux/PPC. */
2328 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2331 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
2340 /* Make a ".reg/999" section. */
2341 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2342 size
, note
->descpos
+ offset
);
2346 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2348 switch (note
->descsz
)
2353 case 128: /* Linux/PPC elf_prpsinfo. */
2354 elf_tdata (abfd
)->core
->pid
2355 = bfd_get_32 (abfd
, note
->descdata
+ 16);
2356 elf_tdata (abfd
)->core
->program
2357 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
2358 elf_tdata (abfd
)->core
->command
2359 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
2362 /* Note that for some reason, a spurious space is tacked
2363 onto the end of the args in some (at least one anyway)
2364 implementations, so strip it off if it exists. */
2367 char *command
= elf_tdata (abfd
)->core
->command
;
2368 int n
= strlen (command
);
2370 if (0 < n
&& command
[n
- 1] == ' ')
2371 command
[n
- 1] = '\0';
2378 elfcore_write_ppc_linux_prpsinfo32
2382 const struct elf_internal_linux_prpsinfo
*prpsinfo
)
2384 struct elf_external_ppc_linux_prpsinfo32 data
;
2386 swap_ppc_linux_prpsinfo32_out (abfd
, prpsinfo
, &data
);
2387 return elfcore_write_note (abfd
, buf
, bufsiz
,
2388 "CORE", NT_PRPSINFO
, &data
, sizeof (data
));
2392 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
2404 va_start (ap
, note_type
);
2405 memset (data
, 0, sizeof (data
));
2406 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
2407 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
2409 return elfcore_write_note (abfd
, buf
, bufsiz
,
2410 "CORE", note_type
, data
, sizeof (data
));
2421 va_start (ap
, note_type
);
2422 memset (data
, 0, 72);
2423 pid
= va_arg (ap
, long);
2424 bfd_put_32 (abfd
, pid
, data
+ 24);
2425 cursig
= va_arg (ap
, int);
2426 bfd_put_16 (abfd
, cursig
, data
+ 12);
2427 greg
= va_arg (ap
, const void *);
2428 memcpy (data
+ 72, greg
, 192);
2429 memset (data
+ 264, 0, 4);
2431 return elfcore_write_note (abfd
, buf
, bufsiz
,
2432 "CORE", note_type
, data
, sizeof (data
));
2438 ppc_elf_lookup_section_flags (char *flag_name
)
2441 if (!strcmp (flag_name
, "SHF_PPC_VLE"))
2447 /* Return address for Ith PLT stub in section PLT, for relocation REL
2448 or (bfd_vma) -1 if it should not be included. */
2451 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
2452 const asection
*plt ATTRIBUTE_UNUSED
,
2455 return rel
->address
;
2458 /* Handle a PowerPC specific section when reading an object file. This
2459 is called when bfd_section_from_shdr finds a section with an unknown
2463 ppc_elf_section_from_shdr (bfd
*abfd
,
2464 Elf_Internal_Shdr
*hdr
,
2471 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
2474 newsect
= hdr
->bfd_section
;
2475 flags
= bfd_get_section_flags (abfd
, newsect
);
2476 if (hdr
->sh_flags
& SHF_EXCLUDE
)
2477 flags
|= SEC_EXCLUDE
;
2479 if (hdr
->sh_type
== SHT_ORDERED
)
2480 flags
|= SEC_SORT_ENTRIES
;
2482 bfd_set_section_flags (abfd
, newsect
, flags
);
2486 /* Set up any other section flags and such that may be necessary. */
2489 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
2490 Elf_Internal_Shdr
*shdr
,
2493 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
2494 shdr
->sh_type
= SHT_ORDERED
;
2499 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2500 need to bump up the number of section headers. */
2503 ppc_elf_additional_program_headers (bfd
*abfd
,
2504 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2509 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2510 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2513 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2514 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2520 /* Modify the segment map for VLE executables. */
2523 ppc_elf_modify_segment_map (bfd
*abfd
,
2524 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2526 struct elf_segment_map
*m
;
2528 /* At this point in the link, output sections have already been sorted by
2529 LMA and assigned to segments. All that is left to do is to ensure
2530 there is no mixing of VLE & non-VLE sections in a text segment.
2531 If we find that case, we split the segment.
2532 We maintain the original output section order. */
2534 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
2536 struct elf_segment_map
*n
;
2539 unsigned int p_flags
;
2541 if (m
->p_type
!= PT_LOAD
|| m
->count
== 0)
2544 for (p_flags
= PF_R
, j
= 0; j
!= m
->count
; ++j
)
2546 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2548 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2551 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2552 p_flags
|= PF_PPC_VLE
;
2557 while (++j
!= m
->count
)
2559 unsigned int p_flags1
= PF_R
;
2561 if ((m
->sections
[j
]->flags
& SEC_READONLY
) == 0)
2563 if ((m
->sections
[j
]->flags
& SEC_CODE
) != 0)
2566 if ((elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0)
2567 p_flags1
|= PF_PPC_VLE
;
2568 if (((p_flags1
^ p_flags
) & PF_PPC_VLE
) != 0)
2571 p_flags
|= p_flags1
;
2573 /* If we're splitting a segment which originally contained rw
2574 sections then those sections might now only be in one of the
2575 two parts. So always set p_flags if splitting, even if we
2576 are being called for objcopy with p_flags_valid set. */
2577 if (j
!= m
->count
|| !m
->p_flags_valid
)
2579 m
->p_flags_valid
= 1;
2580 m
->p_flags
= p_flags
;
2585 /* Sections 0..j-1 stay in this (current) segment,
2586 the remainder are put in a new segment.
2587 The scan resumes with the new segment. */
2589 amt
= sizeof (struct elf_segment_map
);
2590 amt
+= (m
->count
- j
- 1) * sizeof (asection
*);
2591 n
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2595 n
->p_type
= PT_LOAD
;
2596 n
->count
= m
->count
- j
;
2597 for (k
= 0; k
< n
->count
; ++k
)
2598 n
->sections
[k
] = m
->sections
[j
+ k
];
2600 m
->p_size_valid
= 0;
2608 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2609 .PPC.EMB.sbss0 a normal section, and not a bss section so
2610 that the linker doesn't crater when trying to make more than
2613 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
2615 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
2616 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2617 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2618 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2619 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2620 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
2621 { STRING_COMMA_LEN (APUINFO_SECTION_NAME
), 0, SHT_NOTE
, 0 },
2622 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2623 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2624 { NULL
, 0, 0, 0, 0 }
2627 /* This is what we want for new plt/got. */
2628 static struct bfd_elf_special_section ppc_alt_plt
=
2629 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
2631 static const struct bfd_elf_special_section
*
2632 ppc_elf_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
2634 const struct bfd_elf_special_section
*ssect
;
2636 /* See if this is one of the special sections. */
2637 if (sec
->name
== NULL
)
2640 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2644 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2645 ssect
= &ppc_alt_plt
;
2649 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2652 /* Very simple linked list structure for recording apuinfo values. */
2653 typedef struct apuinfo_list
2655 struct apuinfo_list
*next
;
2656 unsigned long value
;
2660 static apuinfo_list
*head
;
2661 static bfd_boolean apuinfo_set
;
2664 apuinfo_list_init (void)
2667 apuinfo_set
= FALSE
;
2671 apuinfo_list_add (unsigned long value
)
2673 apuinfo_list
*entry
= head
;
2675 while (entry
!= NULL
)
2677 if (entry
->value
== value
)
2679 entry
= entry
->next
;
2682 entry
= bfd_malloc (sizeof (* entry
));
2686 entry
->value
= value
;
2692 apuinfo_list_length (void)
2694 apuinfo_list
*entry
;
2695 unsigned long count
;
2697 for (entry
= head
, count
= 0;
2699 entry
= entry
->next
)
2705 static inline unsigned long
2706 apuinfo_list_element (unsigned long number
)
2708 apuinfo_list
* entry
;
2712 entry
= entry
->next
)
2715 return entry
? entry
->value
: 0;
2719 apuinfo_list_finish (void)
2721 apuinfo_list
*entry
;
2723 for (entry
= head
; entry
;)
2725 apuinfo_list
*next
= entry
->next
;
2733 /* Scan the input BFDs and create a linked list of
2734 the APUinfo values that will need to be emitted. */
2737 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2741 char *buffer
= NULL
;
2742 bfd_size_type largest_input_size
= 0;
2744 unsigned long length
;
2745 const char *error_message
= NULL
;
2747 if (link_info
== NULL
)
2750 apuinfo_list_init ();
2752 /* Read in the input sections contents. */
2753 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
2755 unsigned long datum
;
2757 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2761 error_message
= _("corrupt %s section in %B");
2762 length
= asec
->size
;
2767 if (largest_input_size
< asec
->size
)
2771 largest_input_size
= asec
->size
;
2772 buffer
= bfd_malloc (largest_input_size
);
2777 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2778 || (bfd_bread (buffer
, length
, ibfd
) != length
))
2780 error_message
= _("unable to read in %s section from %B");
2784 /* Verify the contents of the header. Note - we have to
2785 extract the values this way in order to allow for a
2786 host whose endian-ness is different from the target. */
2787 datum
= bfd_get_32 (ibfd
, buffer
);
2788 if (datum
!= sizeof APUINFO_LABEL
)
2791 datum
= bfd_get_32 (ibfd
, buffer
+ 8);
2795 if (strcmp (buffer
+ 12, APUINFO_LABEL
) != 0)
2798 /* Get the number of bytes used for apuinfo entries. */
2799 datum
= bfd_get_32 (ibfd
, buffer
+ 4);
2800 if (datum
+ 20 != length
)
2803 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2804 for (i
= 0; i
< datum
; i
+= 4)
2805 apuinfo_list_add (bfd_get_32 (ibfd
, buffer
+ 20 + i
));
2808 error_message
= NULL
;
2812 /* Compute the size of the output section. */
2813 unsigned num_entries
= apuinfo_list_length ();
2815 /* Set the output section size, if it exists. */
2816 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2818 if (asec
&& ! bfd_set_section_size (abfd
, asec
, 20 + num_entries
* 4))
2821 error_message
= _("warning: unable to set size of %s section in %B");
2830 _bfd_error_handler (error_message
, ibfd
, APUINFO_SECTION_NAME
);
2833 /* Prevent the output section from accumulating the input sections'
2834 contents. We have already stored this in our linked list structure. */
2837 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2838 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2840 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2842 return apuinfo_set
&& strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0;
2845 /* Finally we can generate the output section. */
2848 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2853 unsigned num_entries
;
2854 bfd_size_type length
;
2856 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2863 length
= asec
->size
;
2867 buffer
= bfd_malloc (length
);
2871 (_("failed to allocate space for new APUinfo section."));
2875 /* Create the apuinfo header. */
2876 num_entries
= apuinfo_list_length ();
2877 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2878 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2879 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2880 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2883 for (i
= 0; i
< num_entries
; i
++)
2885 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2889 if (length
!= asec
->size
)
2890 _bfd_error_handler (_("failed to compute new APUinfo section."));
2892 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2893 _bfd_error_handler (_("failed to install new APUinfo section."));
2897 apuinfo_list_finish ();
2901 is_nonpic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2903 bfd_byte buf
[GLINK_ENTRY_SIZE
];
2905 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, GLINK_ENTRY_SIZE
))
2908 return ((bfd_get_32 (abfd
, buf
+ 0) & 0xffff0000) == LIS_11
2909 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2910 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
2911 && bfd_get_32 (abfd
, buf
+ 12) == BCTR
);
2915 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2917 bfd_vma vma
= *(bfd_vma
*) ptr
;
2918 return ((section
->flags
& SEC_ALLOC
) != 0
2919 && section
->vma
<= vma
2920 && vma
< section
->vma
+ section
->size
);
2924 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2925 long dynsymcount
, asymbol
**dynsyms
,
2928 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2929 asection
*plt
, *relplt
, *dynamic
, *glink
;
2930 bfd_vma glink_vma
= 0;
2931 bfd_vma resolv_vma
= 0;
2942 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2945 if (dynsymcount
<= 0)
2948 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2952 plt
= bfd_get_section_by_name (abfd
, ".plt");
2956 /* Call common code to handle old-style executable PLTs. */
2957 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2958 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2959 dynsymcount
, dynsyms
, ret
);
2961 /* If this object was prelinked, the prelinker stored the address
2962 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2963 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2964 if (dynamic
!= NULL
)
2966 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2968 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2970 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2973 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2974 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2977 extdynend
= extdyn
+ dynamic
->size
;
2978 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2980 Elf_Internal_Dyn dyn
;
2981 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2983 if (dyn
.d_tag
== DT_NULL
)
2986 if (dyn
.d_tag
== DT_PPC_GOT
)
2988 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2989 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2991 && bfd_get_section_contents (abfd
, got
, buf
,
2992 g_o_t
- got
->vma
+ 4, 4))
2993 glink_vma
= bfd_get_32 (abfd
, buf
);
3000 /* Otherwise we read the first plt entry. */
3003 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
3004 glink_vma
= bfd_get_32 (abfd
, buf
);
3010 /* The .glink section usually does not survive the final
3011 link; search for the section (usually .text) where the
3012 glink stubs now reside. */
3013 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
3017 /* Determine glink PLT resolver by reading the relative branch
3018 from the first glink stub. */
3019 if (bfd_get_section_contents (abfd
, glink
, buf
,
3020 glink_vma
- glink
->vma
, 4))
3022 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3024 /* The first glink stub may either branch to the resolver ... */
3026 if ((insn
& ~0x3fffffc) == 0)
3027 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
3029 /* ... or fall through a bunch of NOPs. */
3030 else if ((insn
^ B
^ NOP
) == 0)
3032 bfd_get_section_contents (abfd
, glink
, buf
,
3033 glink_vma
- glink
->vma
+ i
, 4);
3035 if (bfd_get_32 (abfd
, buf
) != NOP
)
3037 resolv_vma
= glink_vma
+ i
;
3042 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
3043 /* If the stubs are those for -shared/-pie then we might have
3044 multiple stubs for each plt entry. If that is the case then
3045 there is no way to associate stubs with their plt entries short
3046 of figuring out the GOT pointer value used in the stub. */
3047 if (!is_nonpic_glink_stub (abfd
, glink
,
3048 glink_vma
- GLINK_ENTRY_SIZE
- glink
->vma
))
3051 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3052 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
3055 size
= count
* sizeof (asymbol
);
3056 p
= relplt
->relocation
;
3057 for (i
= 0; i
< count
; i
++, p
++)
3059 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3061 size
+= sizeof ("+0x") - 1 + 8;
3064 size
+= sizeof (asymbol
) + sizeof ("__glink");
3067 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3069 s
= *ret
= bfd_malloc (size
);
3073 stub_vma
= glink_vma
;
3074 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
3075 p
= relplt
->relocation
+ count
- 1;
3076 for (i
= 0; i
< count
; i
++)
3080 *s
= **p
->sym_ptr_ptr
;
3081 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3082 we are defining a symbol, ensure one of them is set. */
3083 if ((s
->flags
& BSF_LOCAL
) == 0)
3084 s
->flags
|= BSF_GLOBAL
;
3085 s
->flags
|= BSF_SYNTHETIC
;
3088 if (strcmp ((*p
->sym_ptr_ptr
)->name
, "__tls_get_addr_opt") == 0)
3090 s
->value
= stub_vma
- glink
->vma
;
3093 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3094 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3098 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3099 names
+= sizeof ("+0x") - 1;
3100 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3101 names
+= strlen (names
);
3103 memcpy (names
, "@plt", sizeof ("@plt"));
3104 names
+= sizeof ("@plt");
3109 /* Add a symbol at the start of the glink branch table. */
3110 memset (s
, 0, sizeof *s
);
3112 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3114 s
->value
= glink_vma
- glink
->vma
;
3116 memcpy (names
, "__glink", sizeof ("__glink"));
3117 names
+= sizeof ("__glink");
3123 /* Add a symbol for the glink PLT resolver. */
3124 memset (s
, 0, sizeof *s
);
3126 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3128 s
->value
= resolv_vma
- glink
->vma
;
3130 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3131 names
+= sizeof ("__glink_PLTresolve");
3139 /* The following functions are specific to the ELF linker, while
3140 functions above are used generally. They appear in this file more
3141 or less in the order in which they are called. eg.
3142 ppc_elf_check_relocs is called early in the link process,
3143 ppc_elf_finish_dynamic_sections is one of the last functions
3146 /* Track PLT entries needed for a given symbol. We might need more
3147 than one glink entry per symbol when generating a pic binary. */
3150 struct plt_entry
*next
;
3152 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3153 This field stores the offset into .got2 used to initialise the
3154 GOT pointer reg. It will always be at least 32768. (Current
3155 gcc always uses an offset of 32768, but ld -r will pack .got2
3156 sections together resulting in larger offsets). */
3159 /* The .got2 section. */
3162 /* PLT refcount or offset. */
3165 bfd_signed_vma refcount
;
3169 /* .glink stub offset. */
3170 bfd_vma glink_offset
;
3173 /* Of those relocs that might be copied as dynamic relocs, this function
3174 selects those that must be copied when linking a shared library,
3175 even when the symbol is local. */
3178 must_be_dyn_reloc (struct bfd_link_info
*info
,
3179 enum elf_ppc_reloc_type r_type
)
3188 case R_PPC_REL14_BRTAKEN
:
3189 case R_PPC_REL14_BRNTAKEN
:
3195 case R_PPC_TPREL16_LO
:
3196 case R_PPC_TPREL16_HI
:
3197 case R_PPC_TPREL16_HA
:
3198 return !bfd_link_executable (info
);
3202 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3203 copying dynamic variables from a shared lib into an app's dynbss
3204 section, and instead use a dynamic relocation to point into the
3206 #define ELIMINATE_COPY_RELOCS 1
3208 /* Used to track dynamic relocations for local symbols. */
3209 struct ppc_dyn_relocs
3211 struct ppc_dyn_relocs
*next
;
3213 /* The input section of the reloc. */
3216 /* Total number of relocs copied for the input section. */
3217 unsigned int count
: 31;
3219 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3220 unsigned int ifunc
: 1;
3223 /* PPC ELF linker hash entry. */
3225 struct ppc_elf_link_hash_entry
3227 struct elf_link_hash_entry elf
;
3229 /* If this symbol is used in the linker created sections, the processor
3230 specific backend uses this field to map the field into the offset
3231 from the beginning of the section. */
3232 elf_linker_section_pointers_t
*linker_section_pointer
;
3234 /* Track dynamic relocs copied for this symbol. */
3235 struct elf_dyn_relocs
*dyn_relocs
;
3237 /* Contexts in which symbol is used in the GOT (or TOC).
3238 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3239 corresponding relocs are encountered during check_relocs.
3240 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3241 indicate the corresponding GOT entry type is not needed. */
3242 #define TLS_GD 1 /* GD reloc. */
3243 #define TLS_LD 2 /* LD reloc. */
3244 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3245 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3246 #define TLS_TLS 16 /* Any TLS reloc. */
3247 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3248 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3251 /* Nonzero if we have seen a small data relocation referring to this
3253 unsigned char has_sda_refs
: 1;
3255 /* Flag use of given relocations. */
3256 unsigned char has_addr16_ha
: 1;
3257 unsigned char has_addr16_lo
: 1;
3260 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3262 /* PPC ELF linker hash table. */
3264 struct ppc_elf_link_hash_table
3266 struct elf_link_hash_table elf
;
3268 /* Various options passed from the linker. */
3269 struct ppc_elf_params
*params
;
3271 /* Short-cuts to get to dynamic linker sections. */
3283 elf_linker_section_t sdata
[2];
3285 asection
*glink_eh_frame
;
3287 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3290 /* The .got.plt section (VxWorks only)*/
3293 /* Shortcut to __tls_get_addr. */
3294 struct elf_link_hash_entry
*tls_get_addr
;
3296 /* The bfd that forced an old-style PLT. */
3299 /* TLS local dynamic got entry handling. */
3301 bfd_signed_vma refcount
;
3305 /* Offset of branch table to PltResolve function in glink. */
3306 bfd_vma glink_pltresolve
;
3308 /* Size of reserved GOT entries. */
3309 unsigned int got_header_size
;
3310 /* Non-zero if allocating the header left a gap. */
3311 unsigned int got_gap
;
3313 /* The type of PLT we have chosen to use. */
3314 enum ppc_elf_plt_type plt_type
;
3316 /* True if the target system is VxWorks. */
3317 unsigned int is_vxworks
:1;
3319 /* The size of PLT entries. */
3321 /* The distance between adjacent PLT slots. */
3323 /* The size of the first PLT entry. */
3324 int plt_initial_entry_size
;
3326 /* Small local sym cache. */
3327 struct sym_cache sym_cache
;
3330 /* Rename some of the generic section flags to better document how they
3331 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3333 /* Nonzero if this section has TLS related relocations. */
3334 #define has_tls_reloc sec_flg0
3336 /* Nonzero if this section has a call to __tls_get_addr. */
3337 #define has_tls_get_addr_call sec_flg1
3339 /* Get the PPC ELF linker hash table from a link_info structure. */
3341 #define ppc_elf_hash_table(p) \
3342 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3343 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3345 /* Create an entry in a PPC ELF linker hash table. */
3347 static struct bfd_hash_entry
*
3348 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3349 struct bfd_hash_table
*table
,
3352 /* Allocate the structure if it has not already been allocated by a
3356 entry
= bfd_hash_allocate (table
,
3357 sizeof (struct ppc_elf_link_hash_entry
));
3362 /* Call the allocation method of the superclass. */
3363 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3366 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
3367 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
3368 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
3369 ppc_elf_hash_entry (entry
)->has_sda_refs
= 0;
3375 /* Create a PPC ELF linker hash table. */
3377 static struct bfd_link_hash_table
*
3378 ppc_elf_link_hash_table_create (bfd
*abfd
)
3380 struct ppc_elf_link_hash_table
*ret
;
3381 static struct ppc_elf_params default_params
3382 = { PLT_OLD
, 0, 1, 0, 0, 12, 0, 0 };
3384 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
3388 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
3389 ppc_elf_link_hash_newfunc
,
3390 sizeof (struct ppc_elf_link_hash_entry
),
3397 ret
->elf
.init_plt_refcount
.refcount
= 0;
3398 ret
->elf
.init_plt_refcount
.glist
= NULL
;
3399 ret
->elf
.init_plt_offset
.offset
= 0;
3400 ret
->elf
.init_plt_offset
.glist
= NULL
;
3402 ret
->params
= &default_params
;
3404 ret
->sdata
[0].name
= ".sdata";
3405 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
3406 ret
->sdata
[0].bss_name
= ".sbss";
3408 ret
->sdata
[1].name
= ".sdata2";
3409 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
3410 ret
->sdata
[1].bss_name
= ".sbss2";
3412 ret
->plt_entry_size
= 12;
3413 ret
->plt_slot_size
= 8;
3414 ret
->plt_initial_entry_size
= 72;
3416 return &ret
->elf
.root
;
3419 /* Hook linker params into hash table. */
3422 ppc_elf_link_params (struct bfd_link_info
*info
, struct ppc_elf_params
*params
)
3424 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3427 htab
->params
= params
;
3428 params
->pagesize_p2
= bfd_log2 (params
->pagesize
);
3431 /* Create .got and the related sections. */
3434 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
3436 struct ppc_elf_link_hash_table
*htab
;
3440 if (!_bfd_elf_create_got_section (abfd
, info
))
3443 htab
= ppc_elf_hash_table (info
);
3444 htab
->got
= s
= bfd_get_linker_section (abfd
, ".got");
3448 if (htab
->is_vxworks
)
3450 htab
->sgotplt
= bfd_get_linker_section (abfd
, ".got.plt");
3456 /* The powerpc .got has a blrl instruction in it. Mark it
3458 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
3459 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3460 if (!bfd_set_section_flags (abfd
, s
, flags
))
3464 htab
->relgot
= bfd_get_linker_section (abfd
, ".rela.got");
3471 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3472 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3473 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3476 ppc_elf_create_linker_section (bfd
*abfd
,
3477 struct bfd_link_info
*info
,
3479 elf_linker_section_t
*lsect
)
3483 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3484 | SEC_LINKER_CREATED
);
3486 s
= bfd_make_section_anyway_with_flags (abfd
, lsect
->name
, flags
);
3491 /* Define the sym on the first section of this name. */
3492 s
= bfd_get_section_by_name (abfd
, lsect
->name
);
3494 lsect
->sym
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, lsect
->sym_name
);
3495 if (lsect
->sym
== NULL
)
3497 lsect
->sym
->root
.u
.def
.value
= 0x8000;
3502 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
3504 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3508 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
3509 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3510 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
3513 || !bfd_set_section_alignment (abfd
, s
,
3514 htab
->params
->ppc476_workaround
? 6 : 4))
3517 if (!info
->no_ld_generated_unwind_info
)
3519 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3520 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3521 s
= bfd_make_section_anyway_with_flags (abfd
, ".eh_frame", flags
);
3522 htab
->glink_eh_frame
= s
;
3524 || !bfd_set_section_alignment (abfd
, s
, 2))
3528 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
3529 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
3532 || !bfd_set_section_alignment (abfd
, s
, 4))
3535 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3536 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3537 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.iplt", flags
);
3540 || ! bfd_set_section_alignment (abfd
, s
, 2))
3543 if (!ppc_elf_create_linker_section (abfd
, info
, 0,
3547 if (!ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3554 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3555 to output sections (just like _bfd_elf_create_dynamic_sections has
3556 to create .dynbss and .rela.bss). */
3559 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3561 struct ppc_elf_link_hash_table
*htab
;
3565 htab
= ppc_elf_hash_table (info
);
3567 if (htab
->got
== NULL
3568 && !ppc_elf_create_got (abfd
, info
))
3571 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
3574 if (htab
->glink
== NULL
3575 && !ppc_elf_create_glink (abfd
, info
))
3578 htab
->dynbss
= bfd_get_linker_section (abfd
, ".dynbss");
3579 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynsbss",
3580 SEC_ALLOC
| SEC_LINKER_CREATED
);
3585 if (! bfd_link_pic (info
))
3587 htab
->relbss
= bfd_get_linker_section (abfd
, ".rela.bss");
3588 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3589 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3590 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.sbss", flags
);
3593 || ! bfd_set_section_alignment (abfd
, s
, 2))
3597 if (htab
->is_vxworks
3598 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
3601 htab
->relplt
= bfd_get_linker_section (abfd
, ".rela.plt");
3602 htab
->plt
= s
= bfd_get_linker_section (abfd
, ".plt");
3606 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
3607 if (htab
->plt_type
== PLT_VXWORKS
)
3608 /* The VxWorks PLT is a loaded section with contents. */
3609 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3610 return bfd_set_section_flags (abfd
, s
, flags
);
3613 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3616 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3617 struct elf_link_hash_entry
*dir
,
3618 struct elf_link_hash_entry
*ind
)
3620 struct ppc_elf_link_hash_entry
*edir
, *eind
;
3622 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
3623 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
3625 edir
->tls_mask
|= eind
->tls_mask
;
3626 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3628 /* If called to transfer flags for a weakdef during processing
3629 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3630 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3631 if (!(ELIMINATE_COPY_RELOCS
3632 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3633 && edir
->elf
.dynamic_adjusted
))
3634 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3636 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3637 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3638 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3639 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3640 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3642 if (eind
->dyn_relocs
!= NULL
)
3644 if (edir
->dyn_relocs
!= NULL
)
3646 struct elf_dyn_relocs
**pp
;
3647 struct elf_dyn_relocs
*p
;
3649 /* Add reloc counts against the indirect sym to the direct sym
3650 list. Merge any entries against the same section. */
3651 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3653 struct elf_dyn_relocs
*q
;
3655 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3656 if (q
->sec
== p
->sec
)
3658 q
->pc_count
+= p
->pc_count
;
3659 q
->count
+= p
->count
;
3666 *pp
= edir
->dyn_relocs
;
3669 edir
->dyn_relocs
= eind
->dyn_relocs
;
3670 eind
->dyn_relocs
= NULL
;
3673 /* If we were called to copy over info for a weak sym, that's all.
3674 You might think dyn_relocs need not be copied over; After all,
3675 both syms will be dynamic or both non-dynamic so we're just
3676 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3677 code in ppc_elf_adjust_dynamic_symbol needs to check for
3678 dyn_relocs in read-only sections, and it does so on what is the
3680 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3683 /* Copy over the GOT refcount entries that we may have already seen to
3684 the symbol which just became indirect. */
3685 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3686 eind
->elf
.got
.refcount
= 0;
3688 /* And plt entries. */
3689 if (eind
->elf
.plt
.plist
!= NULL
)
3691 if (edir
->elf
.plt
.plist
!= NULL
)
3693 struct plt_entry
**entp
;
3694 struct plt_entry
*ent
;
3696 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3698 struct plt_entry
*dent
;
3700 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3701 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3703 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3710 *entp
= edir
->elf
.plt
.plist
;
3713 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3714 eind
->elf
.plt
.plist
= NULL
;
3717 if (eind
->elf
.dynindx
!= -1)
3719 if (edir
->elf
.dynindx
!= -1)
3720 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3721 edir
->elf
.dynstr_index
);
3722 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3723 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3724 eind
->elf
.dynindx
= -1;
3725 eind
->elf
.dynstr_index
= 0;
3729 /* Hook called by the linker routine which adds symbols from an object
3730 file. We use it to put .comm items in .sbss, and not .bss. */
3733 ppc_elf_add_symbol_hook (bfd
*abfd
,
3734 struct bfd_link_info
*info
,
3735 Elf_Internal_Sym
*sym
,
3736 const char **namep ATTRIBUTE_UNUSED
,
3737 flagword
*flagsp ATTRIBUTE_UNUSED
,
3741 if (sym
->st_shndx
== SHN_COMMON
3742 && !bfd_link_relocatable (info
)
3743 && is_ppc_elf (info
->output_bfd
)
3744 && sym
->st_size
<= elf_gp_size (abfd
))
3746 /* Common symbols less than or equal to -G nn bytes are automatically
3748 struct ppc_elf_link_hash_table
*htab
;
3750 htab
= ppc_elf_hash_table (info
);
3751 if (htab
->sbss
== NULL
)
3753 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3755 if (!htab
->elf
.dynobj
)
3756 htab
->elf
.dynobj
= abfd
;
3758 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3761 if (htab
->sbss
== NULL
)
3766 *valp
= sym
->st_size
;
3769 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3770 && (abfd
->flags
& DYNAMIC
) == 0
3771 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
3772 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
3777 /* Find a linker generated pointer with a given addend and type. */
3779 static elf_linker_section_pointers_t
*
3780 elf_find_pointer_linker_section
3781 (elf_linker_section_pointers_t
*linker_pointers
,
3783 elf_linker_section_t
*lsect
)
3785 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3786 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3787 return linker_pointers
;
3792 /* Allocate a pointer to live in a linker created section. */
3795 elf_allocate_pointer_linker_section (bfd
*abfd
,
3796 elf_linker_section_t
*lsect
,
3797 struct elf_link_hash_entry
*h
,
3798 const Elf_Internal_Rela
*rel
)
3800 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3801 elf_linker_section_pointers_t
*linker_section_ptr
;
3802 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3805 BFD_ASSERT (lsect
!= NULL
);
3807 /* Is this a global symbol? */
3810 struct ppc_elf_link_hash_entry
*eh
;
3812 /* Has this symbol already been allocated? If so, our work is done. */
3813 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3814 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3819 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3823 BFD_ASSERT (is_ppc_elf (abfd
));
3825 /* Allocation of a pointer to a local symbol. */
3826 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3828 /* Allocate a table to hold the local symbols if first time. */
3831 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3834 amt
*= sizeof (elf_linker_section_pointers_t
*);
3835 ptr
= bfd_zalloc (abfd
, amt
);
3840 elf_local_ptr_offsets (abfd
) = ptr
;
3843 /* Has this symbol already been allocated? If so, our work is done. */
3844 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3849 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3852 /* Allocate space for a pointer in the linker section, and allocate
3853 a new pointer record from internal memory. */
3854 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3855 amt
= sizeof (elf_linker_section_pointers_t
);
3856 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3858 if (!linker_section_ptr
)
3861 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3862 linker_section_ptr
->addend
= rel
->r_addend
;
3863 linker_section_ptr
->lsect
= lsect
;
3864 *ptr_linker_section_ptr
= linker_section_ptr
;
3866 if (!bfd_set_section_alignment (lsect
->section
->owner
, lsect
->section
, 2))
3868 linker_section_ptr
->offset
= lsect
->section
->size
;
3869 lsect
->section
->size
+= 4;
3873 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3874 lsect
->name
, (long) linker_section_ptr
->offset
,
3875 (long) lsect
->section
->size
);
3881 static struct plt_entry
**
3882 update_local_sym_info (bfd
*abfd
,
3883 Elf_Internal_Shdr
*symtab_hdr
,
3884 unsigned long r_symndx
,
3887 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3888 struct plt_entry
**local_plt
;
3889 char *local_got_tls_masks
;
3891 if (local_got_refcounts
== NULL
)
3893 bfd_size_type size
= symtab_hdr
->sh_info
;
3895 size
*= (sizeof (*local_got_refcounts
)
3896 + sizeof (*local_plt
)
3897 + sizeof (*local_got_tls_masks
));
3898 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3899 if (local_got_refcounts
== NULL
)
3901 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3904 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3905 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3906 local_got_tls_masks
[r_symndx
] |= tls_type
;
3907 if (tls_type
!= PLT_IFUNC
)
3908 local_got_refcounts
[r_symndx
] += 1;
3909 return local_plt
+ r_symndx
;
3913 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3914 asection
*sec
, bfd_vma addend
)
3916 struct plt_entry
*ent
;
3920 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3921 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3925 bfd_size_type amt
= sizeof (*ent
);
3926 ent
= bfd_alloc (abfd
, amt
);
3931 ent
->addend
= addend
;
3932 ent
->plt
.refcount
= 0;
3935 ent
->plt
.refcount
+= 1;
3939 static struct plt_entry
*
3940 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3942 struct plt_entry
*ent
;
3946 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3947 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3953 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3955 return (r_type
== R_PPC_PLTREL24
3956 || r_type
== R_PPC_LOCAL24PC
3957 || r_type
== R_PPC_REL24
3958 || r_type
== R_PPC_REL14
3959 || r_type
== R_PPC_REL14_BRTAKEN
3960 || r_type
== R_PPC_REL14_BRNTAKEN
3961 || r_type
== R_PPC_ADDR24
3962 || r_type
== R_PPC_ADDR14
3963 || r_type
== R_PPC_ADDR14_BRTAKEN
3964 || r_type
== R_PPC_ADDR14_BRNTAKEN
3965 || r_type
== R_PPC_VLE_REL24
);
3969 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3972 (_("%B: relocation %s cannot be used when making a shared object"),
3974 ppc_elf_howto_table
[r_type
]->name
);
3975 bfd_set_error (bfd_error_bad_value
);
3978 /* Look through the relocs for a section during the first phase, and
3979 allocate space in the global offset table or procedure linkage
3983 ppc_elf_check_relocs (bfd
*abfd
,
3984 struct bfd_link_info
*info
,
3986 const Elf_Internal_Rela
*relocs
)
3988 struct ppc_elf_link_hash_table
*htab
;
3989 Elf_Internal_Shdr
*symtab_hdr
;
3990 struct elf_link_hash_entry
**sym_hashes
;
3991 const Elf_Internal_Rela
*rel
;
3992 const Elf_Internal_Rela
*rel_end
;
3993 asection
*got2
, *sreloc
;
3994 struct elf_link_hash_entry
*tga
;
3996 if (bfd_link_relocatable (info
))
3999 /* Don't do anything special with non-loaded, non-alloced sections.
4000 In particular, any relocs in such sections should not affect GOT
4001 and PLT reference counting (ie. we don't allow them to create GOT
4002 or PLT entries), there's no possibility or desire to optimize TLS
4003 relocs, and there's not much point in propagating relocs to shared
4004 libs that the dynamic linker won't relocate. */
4005 if ((sec
->flags
& SEC_ALLOC
) == 0)
4009 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4013 BFD_ASSERT (is_ppc_elf (abfd
));
4015 /* Initialize howto table if not already done. */
4016 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
4017 ppc_elf_howto_init ();
4019 htab
= ppc_elf_hash_table (info
);
4020 if (htab
->glink
== NULL
)
4022 if (htab
->elf
.dynobj
== NULL
)
4023 htab
->elf
.dynobj
= abfd
;
4024 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
4027 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4028 FALSE
, FALSE
, TRUE
);
4029 symtab_hdr
= &elf_symtab_hdr (abfd
);
4030 sym_hashes
= elf_sym_hashes (abfd
);
4031 got2
= bfd_get_section_by_name (abfd
, ".got2");
4034 rel_end
= relocs
+ sec
->reloc_count
;
4035 for (rel
= relocs
; rel
< rel_end
; rel
++)
4037 unsigned long r_symndx
;
4038 enum elf_ppc_reloc_type r_type
;
4039 struct elf_link_hash_entry
*h
;
4041 struct plt_entry
**ifunc
;
4043 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4044 if (r_symndx
< symtab_hdr
->sh_info
)
4048 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4049 while (h
->root
.type
== bfd_link_hash_indirect
4050 || h
->root
.type
== bfd_link_hash_warning
)
4051 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4053 /* PR15323, ref flags aren't set for references in the same
4055 h
->root
.non_ir_ref
= 1;
4058 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4059 This shows up in particular in an R_PPC_ADDR32 in the eabi
4062 && htab
->got
== NULL
4063 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
4065 if (htab
->elf
.dynobj
== NULL
)
4066 htab
->elf
.dynobj
= abfd
;
4067 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4069 BFD_ASSERT (h
== htab
->elf
.hgot
);
4073 r_type
= ELF32_R_TYPE (rel
->r_info
);
4075 if (h
== NULL
&& !htab
->is_vxworks
)
4077 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4082 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4084 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4085 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4090 /* STT_GNU_IFUNC symbols must have a PLT entry;
4091 In a non-pie executable even when there are
4093 if (!bfd_link_pic (info
)
4094 || is_branch_reloc (r_type
))
4097 if (r_type
== R_PPC_PLTREL24
)
4099 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4100 if (bfd_link_pic (info
))
4101 addend
= rel
->r_addend
;
4103 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
4109 if (!htab
->is_vxworks
4110 && is_branch_reloc (r_type
)
4115 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
4116 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
4117 /* We have a new-style __tls_get_addr call with a marker
4121 /* Mark this section as having an old-style call. */
4122 sec
->has_tls_get_addr_call
= 1;
4129 /* These special tls relocs tie a call to __tls_get_addr with
4130 its parameter symbol. */
4133 case R_PPC_GOT_TLSLD16
:
4134 case R_PPC_GOT_TLSLD16_LO
:
4135 case R_PPC_GOT_TLSLD16_HI
:
4136 case R_PPC_GOT_TLSLD16_HA
:
4137 tls_type
= TLS_TLS
| TLS_LD
;
4140 case R_PPC_GOT_TLSGD16
:
4141 case R_PPC_GOT_TLSGD16_LO
:
4142 case R_PPC_GOT_TLSGD16_HI
:
4143 case R_PPC_GOT_TLSGD16_HA
:
4144 tls_type
= TLS_TLS
| TLS_GD
;
4147 case R_PPC_GOT_TPREL16
:
4148 case R_PPC_GOT_TPREL16_LO
:
4149 case R_PPC_GOT_TPREL16_HI
:
4150 case R_PPC_GOT_TPREL16_HA
:
4151 if (bfd_link_pic (info
))
4152 info
->flags
|= DF_STATIC_TLS
;
4153 tls_type
= TLS_TLS
| TLS_TPREL
;
4156 case R_PPC_GOT_DTPREL16
:
4157 case R_PPC_GOT_DTPREL16_LO
:
4158 case R_PPC_GOT_DTPREL16_HI
:
4159 case R_PPC_GOT_DTPREL16_HA
:
4160 tls_type
= TLS_TLS
| TLS_DTPREL
;
4162 sec
->has_tls_reloc
= 1;
4165 /* GOT16 relocations */
4167 case R_PPC_GOT16_LO
:
4168 case R_PPC_GOT16_HI
:
4169 case R_PPC_GOT16_HA
:
4170 /* This symbol requires a global offset table entry. */
4171 if (htab
->got
== NULL
)
4173 if (htab
->elf
.dynobj
== NULL
)
4174 htab
->elf
.dynobj
= abfd
;
4175 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4180 h
->got
.refcount
+= 1;
4181 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4184 /* This is a global offset table entry for a local symbol. */
4185 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4188 /* We may also need a plt entry if the symbol turns out to be
4190 if (h
!= NULL
&& !bfd_link_pic (info
))
4192 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4197 /* Indirect .sdata relocation. */
4198 case R_PPC_EMB_SDAI16
:
4199 if (bfd_link_pic (info
))
4201 bad_shared_reloc (abfd
, r_type
);
4204 htab
->sdata
[0].sym
->ref_regular
= 1;
4205 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[0],
4210 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4211 h
->non_got_ref
= TRUE
;
4215 /* Indirect .sdata2 relocation. */
4216 case R_PPC_EMB_SDA2I16
:
4217 if (bfd_link_pic (info
))
4219 bad_shared_reloc (abfd
, r_type
);
4222 htab
->sdata
[1].sym
->ref_regular
= 1;
4223 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[1],
4228 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4229 h
->non_got_ref
= TRUE
;
4233 case R_PPC_SDAREL16
:
4234 htab
->sdata
[0].sym
->ref_regular
= 1;
4237 case R_PPC_VLE_SDAREL_LO16A
:
4238 case R_PPC_VLE_SDAREL_LO16D
:
4239 case R_PPC_VLE_SDAREL_HI16A
:
4240 case R_PPC_VLE_SDAREL_HI16D
:
4241 case R_PPC_VLE_SDAREL_HA16A
:
4242 case R_PPC_VLE_SDAREL_HA16D
:
4245 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4246 h
->non_got_ref
= TRUE
;
4250 case R_PPC_VLE_REL8
:
4251 case R_PPC_VLE_REL15
:
4252 case R_PPC_VLE_REL24
:
4253 case R_PPC_VLE_LO16A
:
4254 case R_PPC_VLE_LO16D
:
4255 case R_PPC_VLE_HI16A
:
4256 case R_PPC_VLE_HI16D
:
4257 case R_PPC_VLE_HA16A
:
4258 case R_PPC_VLE_HA16D
:
4261 case R_PPC_EMB_SDA2REL
:
4262 if (bfd_link_pic (info
))
4264 bad_shared_reloc (abfd
, r_type
);
4267 htab
->sdata
[1].sym
->ref_regular
= 1;
4270 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4271 h
->non_got_ref
= TRUE
;
4275 case R_PPC_VLE_SDA21_LO
:
4276 case R_PPC_VLE_SDA21
:
4277 case R_PPC_EMB_SDA21
:
4278 case R_PPC_EMB_RELSDA
:
4279 if (bfd_link_pic (info
))
4281 bad_shared_reloc (abfd
, r_type
);
4286 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4287 h
->non_got_ref
= TRUE
;
4291 case R_PPC_EMB_NADDR32
:
4292 case R_PPC_EMB_NADDR16
:
4293 case R_PPC_EMB_NADDR16_LO
:
4294 case R_PPC_EMB_NADDR16_HI
:
4295 case R_PPC_EMB_NADDR16_HA
:
4296 if (bfd_link_pic (info
))
4298 bad_shared_reloc (abfd
, r_type
);
4302 h
->non_got_ref
= TRUE
;
4305 case R_PPC_PLTREL24
:
4310 case R_PPC_PLTREL32
:
4311 case R_PPC_PLT16_LO
:
4312 case R_PPC_PLT16_HI
:
4313 case R_PPC_PLT16_HA
:
4315 fprintf (stderr
, "Reloc requires a PLT entry\n");
4317 /* This symbol requires a procedure linkage table entry. */
4322 /* It does not make sense to have a procedure linkage
4323 table entry for a non-ifunc local symbol. */
4324 info
->callbacks
->einfo
4325 (_("%P: %H: %s reloc against local symbol\n"),
4326 abfd
, sec
, rel
->r_offset
,
4327 ppc_elf_howto_table
[r_type
]->name
);
4328 bfd_set_error (bfd_error_bad_value
);
4336 if (r_type
== R_PPC_PLTREL24
)
4338 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4339 if (bfd_link_pic (info
))
4340 addend
= rel
->r_addend
;
4343 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4348 /* The following relocations don't need to propagate the
4349 relocation if linking a shared object since they are
4350 section relative. */
4352 case R_PPC_SECTOFF_LO
:
4353 case R_PPC_SECTOFF_HI
:
4354 case R_PPC_SECTOFF_HA
:
4355 case R_PPC_DTPREL16
:
4356 case R_PPC_DTPREL16_LO
:
4357 case R_PPC_DTPREL16_HI
:
4358 case R_PPC_DTPREL16_HA
:
4363 case R_PPC_REL16_LO
:
4364 case R_PPC_REL16_HI
:
4365 case R_PPC_REL16_HA
:
4366 case R_PPC_REL16DX_HA
:
4367 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4370 /* These are just markers. */
4372 case R_PPC_EMB_MRKREF
:
4376 case R_PPC_RELAX_PLT
:
4377 case R_PPC_RELAX_PLTREL24
:
4380 /* These should only appear in dynamic objects. */
4382 case R_PPC_GLOB_DAT
:
4383 case R_PPC_JMP_SLOT
:
4384 case R_PPC_RELATIVE
:
4385 case R_PPC_IRELATIVE
:
4388 /* These aren't handled yet. We'll report an error later. */
4390 case R_PPC_EMB_RELSEC16
:
4391 case R_PPC_EMB_RELST_LO
:
4392 case R_PPC_EMB_RELST_HI
:
4393 case R_PPC_EMB_RELST_HA
:
4394 case R_PPC_EMB_BIT_FLD
:
4397 /* This refers only to functions defined in the shared library. */
4398 case R_PPC_LOCAL24PC
:
4399 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4401 htab
->plt_type
= PLT_OLD
;
4402 htab
->old_bfd
= abfd
;
4404 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4407 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4412 /* This relocation describes the C++ object vtable hierarchy.
4413 Reconstruct it for later use during GC. */
4414 case R_PPC_GNU_VTINHERIT
:
4415 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4419 /* This relocation describes which C++ vtable entries are actually
4420 used. Record for later use during GC. */
4421 case R_PPC_GNU_VTENTRY
:
4422 BFD_ASSERT (h
!= NULL
);
4424 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4428 /* We shouldn't really be seeing these. */
4431 case R_PPC_TPREL16_LO
:
4432 case R_PPC_TPREL16_HI
:
4433 case R_PPC_TPREL16_HA
:
4434 if (bfd_link_pic (info
))
4435 info
->flags
|= DF_STATIC_TLS
;
4439 case R_PPC_DTPMOD32
:
4440 case R_PPC_DTPREL32
:
4446 && (sec
->flags
& SEC_CODE
) != 0
4447 && bfd_link_pic (info
)
4448 && htab
->plt_type
== PLT_UNSET
)
4450 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4451 the start of a function, which assembles to a REL32
4452 reference to .got2. If we detect one of these, then
4453 force the old PLT layout because the linker cannot
4454 reliably deduce the GOT pointer value needed for
4457 Elf_Internal_Sym
*isym
;
4459 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4464 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4467 htab
->plt_type
= PLT_OLD
;
4468 htab
->old_bfd
= abfd
;
4471 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4477 case R_PPC_ADDR16_LO
:
4478 case R_PPC_ADDR16_HI
:
4479 case R_PPC_ADDR16_HA
:
4482 if (h
!= NULL
&& !bfd_link_pic (info
))
4484 /* We may need a plt entry if the symbol turns out to be
4485 a function defined in a dynamic object. */
4486 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4489 /* We may need a copy reloc too. */
4491 h
->pointer_equality_needed
= 1;
4492 if (r_type
== R_PPC_ADDR16_HA
)
4493 ppc_elf_hash_entry (h
)->has_addr16_ha
= 1;
4494 if (r_type
== R_PPC_ADDR16_LO
)
4495 ppc_elf_hash_entry (h
)->has_addr16_lo
= 1;
4501 case R_PPC_REL14_BRTAKEN
:
4502 case R_PPC_REL14_BRNTAKEN
:
4505 if (h
== htab
->elf
.hgot
)
4507 if (htab
->plt_type
== PLT_UNSET
)
4509 htab
->plt_type
= PLT_OLD
;
4510 htab
->old_bfd
= abfd
;
4518 case R_PPC_ADDR14_BRTAKEN
:
4519 case R_PPC_ADDR14_BRNTAKEN
:
4520 if (h
!= NULL
&& !bfd_link_pic (info
))
4522 /* We may need a plt entry if the symbol turns out to be
4523 a function defined in a dynamic object. */
4525 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4531 /* If we are creating a shared library, and this is a reloc
4532 against a global symbol, or a non PC relative reloc
4533 against a local symbol, then we need to copy the reloc
4534 into the shared library. However, if we are linking with
4535 -Bsymbolic, we do not need to copy a reloc against a
4536 global symbol which is defined in an object we are
4537 including in the link (i.e., DEF_REGULAR is set). At
4538 this point we have not seen all the input files, so it is
4539 possible that DEF_REGULAR is not set now but will be set
4540 later (it is never cleared). In case of a weak definition,
4541 DEF_REGULAR may be cleared later by a strong definition in
4542 a shared library. We account for that possibility below by
4543 storing information in the dyn_relocs field of the hash
4544 table entry. A similar situation occurs when creating
4545 shared libraries and symbol visibility changes render the
4548 If on the other hand, we are creating an executable, we
4549 may need to keep relocations for symbols satisfied by a
4550 dynamic library if we manage to avoid copy relocs for the
4552 if ((bfd_link_pic (info
)
4553 && (must_be_dyn_reloc (info
, r_type
)
4555 && (!SYMBOLIC_BIND (info
, h
)
4556 || h
->root
.type
== bfd_link_hash_defweak
4557 || !h
->def_regular
))))
4558 || (ELIMINATE_COPY_RELOCS
4559 && !bfd_link_pic (info
)
4561 && (h
->root
.type
== bfd_link_hash_defweak
4562 || !h
->def_regular
)))
4566 "ppc_elf_check_relocs needs to "
4567 "create relocation for %s\n",
4568 (h
&& h
->root
.root
.string
4569 ? h
->root
.root
.string
: "<unknown>"));
4573 if (htab
->elf
.dynobj
== NULL
)
4574 htab
->elf
.dynobj
= abfd
;
4576 sreloc
= _bfd_elf_make_dynamic_reloc_section
4577 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4583 /* If this is a global symbol, we count the number of
4584 relocations we need for this symbol. */
4587 struct elf_dyn_relocs
*p
;
4588 struct elf_dyn_relocs
**rel_head
;
4590 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4592 if (p
== NULL
|| p
->sec
!= sec
)
4594 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4597 p
->next
= *rel_head
;
4604 if (!must_be_dyn_reloc (info
, r_type
))
4609 /* Track dynamic relocs needed for local syms too.
4610 We really need local syms available to do this
4612 struct ppc_dyn_relocs
*p
;
4613 struct ppc_dyn_relocs
**rel_head
;
4614 bfd_boolean is_ifunc
;
4617 Elf_Internal_Sym
*isym
;
4619 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4624 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4628 vpp
= &elf_section_data (s
)->local_dynrel
;
4629 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4630 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4632 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4634 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4636 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4639 p
->next
= *rel_head
;
4642 p
->ifunc
= is_ifunc
;
4656 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4657 and OBFD, and merge non-conflicting ones. */
4659 _bfd_elf_ppc_merge_fp_attributes (bfd
*ibfd
, bfd
*obfd
)
4661 obj_attribute
*in_attr
, *in_attrs
;
4662 obj_attribute
*out_attr
, *out_attrs
;
4664 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4665 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4667 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4668 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4670 if (in_attr
->i
!= out_attr
->i
)
4672 int in_fp
= in_attr
->i
& 3;
4673 int out_fp
= out_attr
->i
& 3;
4677 else if (out_fp
== 0)
4680 out_attr
->i
^= in_fp
;
4682 else if (out_fp
!= 2 && in_fp
== 2)
4684 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
4685 else if (out_fp
== 2 && in_fp
!= 2)
4687 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
4688 else if (out_fp
== 1 && in_fp
== 3)
4690 (_("Warning: %B uses double-precision hard float, "
4691 "%B uses single-precision hard float"), obfd
, ibfd
);
4692 else if (out_fp
== 3 && in_fp
== 1)
4694 (_("Warning: %B uses double-precision hard float, "
4695 "%B uses single-precision hard float"), ibfd
, obfd
);
4697 in_fp
= in_attr
->i
& 0xc;
4698 out_fp
= out_attr
->i
& 0xc;
4701 else if (out_fp
== 0)
4704 out_attr
->i
^= in_fp
;
4706 else if (out_fp
!= 2 * 4 && in_fp
== 2 * 4)
4708 (_("Warning: %B uses 64-bit long double, "
4709 "%B uses 128-bit long double"), ibfd
, obfd
);
4710 else if (in_fp
!= 2 * 4 && out_fp
== 2 * 4)
4712 (_("Warning: %B uses 64-bit long double, "
4713 "%B uses 128-bit long double"), obfd
, ibfd
);
4714 else if (out_fp
== 1 * 4 && in_fp
== 3 * 4)
4716 (_("Warning: %B uses IBM long double, "
4717 "%B uses IEEE long double"), ibfd
, obfd
);
4718 else if (out_fp
== 3 * 4 && in_fp
== 1 * 4)
4720 (_("Warning: %B uses IBM long double, "
4721 "%B uses IEEE long double"), obfd
, ibfd
);
4725 /* Merge object attributes from IBFD into OBFD. Warn if
4726 there are conflicting attributes. */
4728 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
4730 obj_attribute
*in_attr
, *in_attrs
;
4731 obj_attribute
*out_attr
, *out_attrs
;
4733 _bfd_elf_ppc_merge_fp_attributes (ibfd
, obfd
);
4735 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4736 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4738 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4739 merge non-conflicting ones. */
4740 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4741 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4742 if (in_attr
->i
!= out_attr
->i
)
4744 int in_vec
= in_attr
->i
& 3;
4745 int out_vec
= out_attr
->i
& 3;
4749 else if (out_vec
== 0)
4752 out_attr
->i
= in_vec
;
4754 /* For now, allow generic to transition to AltiVec or SPE
4755 without a warning. If GCC marked files with their stack
4756 alignment and used don't-care markings for files which are
4757 not affected by the vector ABI, we could warn about this
4759 else if (in_vec
== 1)
4761 else if (out_vec
== 1)
4764 out_attr
->i
= in_vec
;
4766 else if (out_vec
< in_vec
)
4768 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4770 else if (out_vec
> in_vec
)
4772 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4776 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4777 and merge non-conflicting ones. */
4778 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4779 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4780 if (in_attr
->i
!= out_attr
->i
)
4782 int in_struct
= in_attr
->i
& 3;
4783 int out_struct
= out_attr
->i
& 3;
4785 if (in_struct
== 0 || in_struct
== 3)
4787 else if (out_struct
== 0)
4790 out_attr
->i
= in_struct
;
4792 else if (out_struct
< in_struct
)
4794 (_("Warning: %B uses r3/r4 for small structure returns, "
4795 "%B uses memory"), obfd
, ibfd
);
4796 else if (out_struct
> in_struct
)
4798 (_("Warning: %B uses r3/r4 for small structure returns, "
4799 "%B uses memory"), ibfd
, obfd
);
4802 /* Merge Tag_compatibility attributes and any common GNU ones. */
4803 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
4808 /* Merge backend specific data from an object file to the output
4809 object file when linking. */
4812 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4818 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4821 /* Check if we have the same endianness. */
4822 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
4825 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
4828 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4829 old_flags
= elf_elfheader (obfd
)->e_flags
;
4830 if (!elf_flags_init (obfd
))
4832 /* First call, no flags set. */
4833 elf_flags_init (obfd
) = TRUE
;
4834 elf_elfheader (obfd
)->e_flags
= new_flags
;
4837 /* Compatible flags are ok. */
4838 else if (new_flags
== old_flags
)
4841 /* Incompatible flags. */
4844 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4845 to be linked with either. */
4847 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4848 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4852 (_("%B: compiled with -mrelocatable and linked with "
4853 "modules compiled normally"), ibfd
);
4855 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4856 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4860 (_("%B: compiled normally and linked with "
4861 "modules compiled with -mrelocatable"), ibfd
);
4864 /* The output is -mrelocatable-lib iff both the input files are. */
4865 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4866 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4868 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4869 but each input file is either -mrelocatable or -mrelocatable-lib. */
4870 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4871 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4872 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4873 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4875 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4876 any module uses it. */
4877 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4879 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4880 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4882 /* Warn about any other mismatches. */
4883 if (new_flags
!= old_flags
)
4887 (_("%B: uses different e_flags (0x%lx) fields "
4888 "than previous modules (0x%lx)"),
4889 ibfd
, (long) new_flags
, (long) old_flags
);
4894 bfd_set_error (bfd_error_bad_value
);
4903 ppc_elf_vle_split16 (bfd
*output_bfd
, bfd_byte
*loc
,
4905 split16_format_type split16_format
)
4908 unsigned int insn
, top5
;
4910 insn
= bfd_get_32 (output_bfd
, loc
);
4911 top5
= value
& 0xf800;
4912 top5
= top5
<< (split16_format
== split16a_type
? 9 : 5);
4913 insn
&= (split16_format
== split16a_type
? ~0x1f007ff : ~0x1f07ff);
4915 insn
|= value
& 0x7ff;
4916 bfd_put_32 (output_bfd
, insn
, loc
);
4920 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4921 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4923 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4924 struct bfd_link_info
*info
)
4926 struct ppc_elf_link_hash_table
*htab
;
4929 htab
= ppc_elf_hash_table (info
);
4931 if (htab
->plt_type
== PLT_UNSET
)
4933 struct elf_link_hash_entry
*h
;
4935 if (htab
->params
->plt_style
== PLT_OLD
)
4936 htab
->plt_type
= PLT_OLD
;
4937 else if (bfd_link_pic (info
)
4938 && htab
->elf
.dynamic_sections_created
4939 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
4940 FALSE
, FALSE
, TRUE
)) != NULL
4941 && (h
->type
== STT_FUNC
4944 && !(SYMBOL_CALLS_LOCAL (info
, h
)
4945 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4946 && h
->root
.type
== bfd_link_hash_undefweak
)))
4948 /* Profiling of shared libs (and pies) is not supported with
4949 secure plt, because ppc32 does profiling before a
4950 function prologue and a secure plt pic call stubs needs
4951 r30 to be set up. */
4952 htab
->plt_type
= PLT_OLD
;
4957 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
4959 /* Look through the reloc flags left by ppc_elf_check_relocs.
4960 Use the old style bss plt if a file makes plt calls
4961 without using the new relocs, and if ld isn't given
4962 --secure-plt and we never see REL16 relocs. */
4963 if (plt_type
== PLT_UNSET
)
4965 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
4966 if (is_ppc_elf (ibfd
))
4968 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4970 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
4973 htab
->old_bfd
= ibfd
;
4977 htab
->plt_type
= plt_type
;
4980 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
4982 if (htab
->old_bfd
!= NULL
)
4983 info
->callbacks
->einfo (_("%P: bss-plt forced due to %B\n"),
4986 info
->callbacks
->einfo (_("%P: bss-plt forced by profiling\n"));
4989 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
4991 if (htab
->plt_type
== PLT_NEW
)
4993 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
4994 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4996 /* The new PLT is a loaded section. */
4997 if (htab
->plt
!= NULL
4998 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
5001 /* The new GOT is not executable. */
5002 if (htab
->got
!= NULL
5003 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
5008 /* Stop an unused .glink section from affecting .text alignment. */
5009 if (htab
->glink
!= NULL
5010 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
5013 return htab
->plt_type
== PLT_NEW
;
5016 /* Return the section that should be marked against GC for a given
5020 ppc_elf_gc_mark_hook (asection
*sec
,
5021 struct bfd_link_info
*info
,
5022 Elf_Internal_Rela
*rel
,
5023 struct elf_link_hash_entry
*h
,
5024 Elf_Internal_Sym
*sym
)
5027 switch (ELF32_R_TYPE (rel
->r_info
))
5029 case R_PPC_GNU_VTINHERIT
:
5030 case R_PPC_GNU_VTENTRY
:
5034 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5037 /* Update the got, plt and dynamic reloc reference counts for the
5038 section being removed. */
5041 ppc_elf_gc_sweep_hook (bfd
*abfd
,
5042 struct bfd_link_info
*info
,
5044 const Elf_Internal_Rela
*relocs
)
5046 struct ppc_elf_link_hash_table
*htab
;
5047 Elf_Internal_Shdr
*symtab_hdr
;
5048 struct elf_link_hash_entry
**sym_hashes
;
5049 bfd_signed_vma
*local_got_refcounts
;
5050 const Elf_Internal_Rela
*rel
, *relend
;
5053 if (bfd_link_relocatable (info
))
5056 if ((sec
->flags
& SEC_ALLOC
) == 0)
5059 elf_section_data (sec
)->local_dynrel
= NULL
;
5061 htab
= ppc_elf_hash_table (info
);
5062 symtab_hdr
= &elf_symtab_hdr (abfd
);
5063 sym_hashes
= elf_sym_hashes (abfd
);
5064 local_got_refcounts
= elf_local_got_refcounts (abfd
);
5065 got2
= bfd_get_section_by_name (abfd
, ".got2");
5067 relend
= relocs
+ sec
->reloc_count
;
5068 for (rel
= relocs
; rel
< relend
; rel
++)
5070 unsigned long r_symndx
;
5071 enum elf_ppc_reloc_type r_type
;
5072 struct elf_link_hash_entry
*h
= NULL
;
5074 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5075 if (r_symndx
>= symtab_hdr
->sh_info
)
5077 struct elf_dyn_relocs
**pp
, *p
;
5078 struct ppc_elf_link_hash_entry
*eh
;
5080 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5081 while (h
->root
.type
== bfd_link_hash_indirect
5082 || h
->root
.type
== bfd_link_hash_warning
)
5083 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5084 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5086 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5089 /* Everything must go for SEC. */
5095 r_type
= ELF32_R_TYPE (rel
->r_info
);
5096 if (!htab
->is_vxworks
5098 && local_got_refcounts
!= NULL
5099 && (!bfd_link_pic (info
)
5100 || is_branch_reloc (r_type
)))
5102 struct plt_entry
**local_plt
= (struct plt_entry
**)
5103 (local_got_refcounts
+ symtab_hdr
->sh_info
);
5104 char *local_got_tls_masks
= (char *)
5105 (local_plt
+ symtab_hdr
->sh_info
);
5106 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5108 struct plt_entry
**ifunc
= local_plt
+ r_symndx
;
5110 struct plt_entry
*ent
;
5112 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
5113 addend
= rel
->r_addend
;
5114 ent
= find_plt_ent (ifunc
, got2
, addend
);
5115 if (ent
->plt
.refcount
> 0)
5116 ent
->plt
.refcount
-= 1;
5123 case R_PPC_GOT_TLSLD16
:
5124 case R_PPC_GOT_TLSLD16_LO
:
5125 case R_PPC_GOT_TLSLD16_HI
:
5126 case R_PPC_GOT_TLSLD16_HA
:
5127 case R_PPC_GOT_TLSGD16
:
5128 case R_PPC_GOT_TLSGD16_LO
:
5129 case R_PPC_GOT_TLSGD16_HI
:
5130 case R_PPC_GOT_TLSGD16_HA
:
5131 case R_PPC_GOT_TPREL16
:
5132 case R_PPC_GOT_TPREL16_LO
:
5133 case R_PPC_GOT_TPREL16_HI
:
5134 case R_PPC_GOT_TPREL16_HA
:
5135 case R_PPC_GOT_DTPREL16
:
5136 case R_PPC_GOT_DTPREL16_LO
:
5137 case R_PPC_GOT_DTPREL16_HI
:
5138 case R_PPC_GOT_DTPREL16_HA
:
5140 case R_PPC_GOT16_LO
:
5141 case R_PPC_GOT16_HI
:
5142 case R_PPC_GOT16_HA
:
5145 if (h
->got
.refcount
> 0)
5147 if (!bfd_link_pic (info
))
5149 struct plt_entry
*ent
;
5151 ent
= find_plt_ent (&h
->plt
.plist
, NULL
, 0);
5152 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5153 ent
->plt
.refcount
-= 1;
5156 else if (local_got_refcounts
!= NULL
)
5158 if (local_got_refcounts
[r_symndx
] > 0)
5159 local_got_refcounts
[r_symndx
]--;
5165 case R_PPC_REL14_BRTAKEN
:
5166 case R_PPC_REL14_BRNTAKEN
:
5168 if (h
== NULL
|| h
== htab
->elf
.hgot
)
5175 case R_PPC_ADDR16_LO
:
5176 case R_PPC_ADDR16_HI
:
5177 case R_PPC_ADDR16_HA
:
5179 case R_PPC_ADDR14_BRTAKEN
:
5180 case R_PPC_ADDR14_BRNTAKEN
:
5183 if (bfd_link_pic (info
))
5188 case R_PPC_PLTREL24
:
5189 case R_PPC_PLTREL32
:
5190 case R_PPC_PLT16_LO
:
5191 case R_PPC_PLT16_HI
:
5192 case R_PPC_PLT16_HA
:
5196 struct plt_entry
*ent
;
5198 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
5199 addend
= rel
->r_addend
;
5200 ent
= find_plt_ent (&h
->plt
.plist
, got2
, addend
);
5201 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5202 ent
->plt
.refcount
-= 1;
5213 /* Set plt output section type, htab->tls_get_addr, and call the
5214 generic ELF tls_setup function. */
5217 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5219 struct ppc_elf_link_hash_table
*htab
;
5221 htab
= ppc_elf_hash_table (info
);
5222 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5223 FALSE
, FALSE
, TRUE
);
5224 if (htab
->plt_type
!= PLT_NEW
)
5225 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5227 if (!htab
->params
->no_tls_get_addr_opt
)
5229 struct elf_link_hash_entry
*opt
, *tga
;
5230 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5231 FALSE
, FALSE
, TRUE
);
5233 && (opt
->root
.type
== bfd_link_hash_defined
5234 || opt
->root
.type
== bfd_link_hash_defweak
))
5236 /* If glibc supports an optimized __tls_get_addr call stub,
5237 signalled by the presence of __tls_get_addr_opt, and we'll
5238 be calling __tls_get_addr via a plt call stub, then
5239 make __tls_get_addr point to __tls_get_addr_opt. */
5240 tga
= htab
->tls_get_addr
;
5241 if (htab
->elf
.dynamic_sections_created
5243 && (tga
->type
== STT_FUNC
5245 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5246 || (ELF_ST_VISIBILITY (tga
->other
) != STV_DEFAULT
5247 && tga
->root
.type
== bfd_link_hash_undefweak
)))
5249 struct plt_entry
*ent
;
5250 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5251 if (ent
->plt
.refcount
> 0)
5255 tga
->root
.type
= bfd_link_hash_indirect
;
5256 tga
->root
.u
.i
.link
= &opt
->root
;
5257 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5258 opt
->forced_local
= 0;
5259 if (opt
->dynindx
!= -1)
5261 /* Use __tls_get_addr_opt in dynamic relocations. */
5263 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5265 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5268 htab
->tls_get_addr
= opt
;
5273 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5275 if (htab
->plt_type
== PLT_NEW
5276 && htab
->plt
!= NULL
5277 && htab
->plt
->output_section
!= NULL
)
5279 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
5280 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5283 return _bfd_elf_tls_setup (obfd
, info
);
5286 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5290 branch_reloc_hash_match (const bfd
*ibfd
,
5291 const Elf_Internal_Rela
*rel
,
5292 const struct elf_link_hash_entry
*hash
)
5294 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5295 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5296 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5298 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5300 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5301 struct elf_link_hash_entry
*h
;
5303 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5304 while (h
->root
.type
== bfd_link_hash_indirect
5305 || h
->root
.type
== bfd_link_hash_warning
)
5306 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5313 /* Run through all the TLS relocs looking for optimization
5317 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5318 struct bfd_link_info
*info
)
5322 struct ppc_elf_link_hash_table
*htab
;
5325 if (!bfd_link_executable (info
))
5328 htab
= ppc_elf_hash_table (info
);
5332 /* Make two passes through the relocs. First time check that tls
5333 relocs involved in setting up a tls_get_addr call are indeed
5334 followed by such a call. If they are not, don't do any tls
5335 optimization. On the second pass twiddle tls_mask flags to
5336 notify relocate_section that optimization can be done, and
5337 adjust got and plt refcounts. */
5338 for (pass
= 0; pass
< 2; ++pass
)
5339 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
5341 Elf_Internal_Sym
*locsyms
= NULL
;
5342 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5343 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5345 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5346 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5348 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5349 int expecting_tls_get_addr
= 0;
5351 /* Read the relocations. */
5352 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5354 if (relstart
== NULL
)
5357 relend
= relstart
+ sec
->reloc_count
;
5358 for (rel
= relstart
; rel
< relend
; rel
++)
5360 enum elf_ppc_reloc_type r_type
;
5361 unsigned long r_symndx
;
5362 struct elf_link_hash_entry
*h
= NULL
;
5364 char tls_set
, tls_clear
;
5365 bfd_boolean is_local
;
5366 bfd_signed_vma
*got_count
;
5368 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5369 if (r_symndx
>= symtab_hdr
->sh_info
)
5371 struct elf_link_hash_entry
**sym_hashes
;
5373 sym_hashes
= elf_sym_hashes (ibfd
);
5374 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5375 while (h
->root
.type
== bfd_link_hash_indirect
5376 || h
->root
.type
== bfd_link_hash_warning
)
5377 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5385 r_type
= ELF32_R_TYPE (rel
->r_info
);
5386 /* If this section has old-style __tls_get_addr calls
5387 without marker relocs, then check that each
5388 __tls_get_addr call reloc is preceded by a reloc
5389 that conceivably belongs to the __tls_get_addr arg
5390 setup insn. If we don't find matching arg setup
5391 relocs, don't do any tls optimization. */
5393 && sec
->has_tls_get_addr_call
5395 && h
== htab
->tls_get_addr
5396 && !expecting_tls_get_addr
5397 && is_branch_reloc (r_type
))
5399 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5400 "TLS optimization disabled\n",
5401 ibfd
, sec
, rel
->r_offset
);
5402 if (elf_section_data (sec
)->relocs
!= relstart
)
5407 expecting_tls_get_addr
= 0;
5410 case R_PPC_GOT_TLSLD16
:
5411 case R_PPC_GOT_TLSLD16_LO
:
5412 expecting_tls_get_addr
= 1;
5415 case R_PPC_GOT_TLSLD16_HI
:
5416 case R_PPC_GOT_TLSLD16_HA
:
5417 /* These relocs should never be against a symbol
5418 defined in a shared lib. Leave them alone if
5419 that turns out to be the case. */
5428 case R_PPC_GOT_TLSGD16
:
5429 case R_PPC_GOT_TLSGD16_LO
:
5430 expecting_tls_get_addr
= 1;
5433 case R_PPC_GOT_TLSGD16_HI
:
5434 case R_PPC_GOT_TLSGD16_HA
:
5440 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5444 case R_PPC_GOT_TPREL16
:
5445 case R_PPC_GOT_TPREL16_LO
:
5446 case R_PPC_GOT_TPREL16_HI
:
5447 case R_PPC_GOT_TPREL16_HA
:
5452 tls_clear
= TLS_TPREL
;
5460 expecting_tls_get_addr
= 2;
5471 if (!expecting_tls_get_addr
5472 || (expecting_tls_get_addr
== 1
5473 && !sec
->has_tls_get_addr_call
))
5476 if (rel
+ 1 < relend
5477 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5478 htab
->tls_get_addr
))
5481 /* Uh oh, we didn't find the expected call. We
5482 could just mark this symbol to exclude it
5483 from tls optimization but it's safer to skip
5484 the entire optimization. */
5485 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5486 "TLS optimization disabled\n"),
5487 ibfd
, sec
, rel
->r_offset
);
5488 if (elf_section_data (sec
)->relocs
!= relstart
)
5493 if (expecting_tls_get_addr
)
5495 struct plt_entry
*ent
;
5498 if (bfd_link_pic (info
)
5499 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5500 addend
= rel
[1].r_addend
;
5501 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5503 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5504 ent
->plt
.refcount
-= 1;
5506 if (expecting_tls_get_addr
== 2)
5512 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5513 got_count
= &h
->got
.refcount
;
5517 bfd_signed_vma
*lgot_refs
;
5518 struct plt_entry
**local_plt
;
5521 if (locsyms
== NULL
)
5523 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5524 if (locsyms
== NULL
)
5525 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5526 symtab_hdr
->sh_info
,
5527 0, NULL
, NULL
, NULL
);
5528 if (locsyms
== NULL
)
5530 if (elf_section_data (sec
)->relocs
!= relstart
)
5535 lgot_refs
= elf_local_got_refcounts (ibfd
);
5536 if (lgot_refs
== NULL
)
5538 local_plt
= (struct plt_entry
**)
5539 (lgot_refs
+ symtab_hdr
->sh_info
);
5540 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
5541 tls_mask
= &lgot_masks
[r_symndx
];
5542 got_count
= &lgot_refs
[r_symndx
];
5547 /* We managed to get rid of a got entry. */
5552 *tls_mask
|= tls_set
;
5553 *tls_mask
&= ~tls_clear
;
5556 if (elf_section_data (sec
)->relocs
!= relstart
)
5561 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
5563 if (!info
->keep_memory
)
5566 symtab_hdr
->contents
= (unsigned char *) locsyms
;
5572 /* Return true if we have dynamic relocs that apply to read-only sections. */
5575 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5577 struct elf_dyn_relocs
*p
;
5579 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5581 asection
*s
= p
->sec
->output_section
;
5584 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
5585 == (SEC_READONLY
| SEC_ALLOC
)))
5591 /* Adjust a symbol defined by a dynamic object and referenced by a
5592 regular object. The current definition is in some section of the
5593 dynamic object, but we're not including those sections. We have to
5594 change the definition to something the rest of the link can
5598 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5599 struct elf_link_hash_entry
*h
)
5601 struct ppc_elf_link_hash_table
*htab
;
5605 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5606 h
->root
.root
.string
);
5609 /* Make sure we know what is going on here. */
5610 htab
= ppc_elf_hash_table (info
);
5611 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5613 || h
->type
== STT_GNU_IFUNC
5614 || h
->u
.weakdef
!= NULL
5617 && !h
->def_regular
)));
5619 /* Deal with function syms. */
5620 if (h
->type
== STT_FUNC
5621 || h
->type
== STT_GNU_IFUNC
5624 /* Clear procedure linkage table information for any symbol that
5625 won't need a .plt entry. */
5626 struct plt_entry
*ent
;
5627 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5628 if (ent
->plt
.refcount
> 0)
5631 || (h
->type
!= STT_GNU_IFUNC
5632 && (SYMBOL_CALLS_LOCAL (info
, h
)
5633 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5634 && h
->root
.type
== bfd_link_hash_undefweak
))))
5636 /* A PLT entry is not required/allowed when:
5638 1. We are not using ld.so; because then the PLT entry
5639 can't be set up, so we can't use one. In this case,
5640 ppc_elf_adjust_dynamic_symbol won't even be called.
5642 2. GC has rendered the entry unused.
5644 3. We know for certain that a call to this symbol
5645 will go to this object, or will remain undefined. */
5646 h
->plt
.plist
= NULL
;
5648 h
->pointer_equality_needed
= 0;
5652 /* Taking a function's address in a read/write section
5653 doesn't require us to define the function symbol in the
5654 executable on a plt call stub. A dynamic reloc can
5656 if (h
->pointer_equality_needed
5657 && h
->type
!= STT_GNU_IFUNC
5658 && !htab
->is_vxworks
5659 && !ppc_elf_hash_entry (h
)->has_sda_refs
5660 && !readonly_dynrelocs (h
))
5662 h
->pointer_equality_needed
= 0;
5666 /* After adjust_dynamic_symbol, non_got_ref set in the
5667 non-shared case means that we have allocated space in
5668 .dynbss for the symbol and thus dyn_relocs for this
5669 symbol should be discarded.
5670 If we get here we know we are making a PLT entry for this
5671 symbol, and in an executable we'd normally resolve
5672 relocations against this symbol to the PLT entry. Allow
5673 dynamic relocs if the reference is weak, and the dynamic
5674 relocs will not cause text relocation. */
5675 else if (!h
->ref_regular_nonweak
5677 && h
->type
!= STT_GNU_IFUNC
5678 && !htab
->is_vxworks
5679 && !ppc_elf_hash_entry (h
)->has_sda_refs
5680 && !readonly_dynrelocs (h
))
5683 h
->protected_def
= 0;
5687 h
->plt
.plist
= NULL
;
5689 /* If this is a weak symbol, and there is a real definition, the
5690 processor independent code will have arranged for us to see the
5691 real definition first, and we can just use the same value. */
5692 if (h
->u
.weakdef
!= NULL
)
5694 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5695 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5696 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5697 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5698 if (ELIMINATE_COPY_RELOCS
)
5699 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5703 /* This is a reference to a symbol defined by a dynamic object which
5704 is not a function. */
5706 /* If we are creating a shared library, we must presume that the
5707 only references to the symbol are via the global offset table.
5708 For such cases we need not do anything here; the relocations will
5709 be handled correctly by relocate_section. */
5710 if (bfd_link_pic (info
))
5712 h
->protected_def
= 0;
5716 /* If there are no references to this symbol that do not use the
5717 GOT, we don't need to generate a copy reloc. */
5718 if (!h
->non_got_ref
)
5720 h
->protected_def
= 0;
5724 /* Protected variables do not work with .dynbss. The copy in
5725 .dynbss won't be used by the shared library with the protected
5726 definition for the variable. Editing to PIC, or text relocations
5727 are preferable to an incorrect program. */
5728 if (h
->protected_def
)
5730 if (ELIMINATE_COPY_RELOCS
5731 && ppc_elf_hash_entry (h
)->has_addr16_ha
5732 && ppc_elf_hash_entry (h
)->has_addr16_lo
5733 && htab
->params
->pic_fixup
== 0
5734 && info
->disable_target_specific_optimizations
<= 1)
5735 htab
->params
->pic_fixup
= 1;
5740 /* If -z nocopyreloc was given, we won't generate them either. */
5741 if (info
->nocopyreloc
)
5747 /* If we didn't find any dynamic relocs in read-only sections, then
5748 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5749 We can't do this if there are any small data relocations. This
5750 doesn't work on VxWorks, where we can not have dynamic
5751 relocations (other than copy and jump slot relocations) in an
5753 if (ELIMINATE_COPY_RELOCS
5754 && !ppc_elf_hash_entry (h
)->has_sda_refs
5755 && !htab
->is_vxworks
5757 && !readonly_dynrelocs (h
))
5763 /* We must allocate the symbol in our .dynbss section, which will
5764 become part of the .bss section of the executable. There will be
5765 an entry for this symbol in the .dynsym section. The dynamic
5766 object will contain position independent code, so all references
5767 from the dynamic object to this symbol will go through the global
5768 offset table. The dynamic linker will use the .dynsym entry to
5769 determine the address it must put in the global offset table, so
5770 both the dynamic object and the regular object will refer to the
5771 same memory location for the variable.
5773 Of course, if the symbol is referenced using SDAREL relocs, we
5774 must instead allocate it in .sbss. */
5776 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5780 BFD_ASSERT (s
!= NULL
);
5782 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5783 copy the initial value out of the dynamic object and into the
5784 runtime process image. We need to remember the offset into the
5785 .rela.bss section we are going to use. */
5786 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5790 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5791 srel
= htab
->relsbss
;
5793 srel
= htab
->relbss
;
5794 BFD_ASSERT (srel
!= NULL
);
5795 srel
->size
+= sizeof (Elf32_External_Rela
);
5799 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
5802 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5803 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5804 specifying the addend on the plt relocation. For -fpic code, the sym
5805 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5806 xxxxxxxx.got2.plt_pic32.<callee>. */
5809 add_stub_sym (struct plt_entry
*ent
,
5810 struct elf_link_hash_entry
*h
,
5811 struct bfd_link_info
*info
)
5813 struct elf_link_hash_entry
*sh
;
5814 size_t len1
, len2
, len3
;
5817 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5819 if (bfd_link_pic (info
))
5820 stub
= ".plt_pic32.";
5822 stub
= ".plt_call32.";
5824 len1
= strlen (h
->root
.root
.string
);
5825 len2
= strlen (stub
);
5828 len3
= strlen (ent
->sec
->name
);
5829 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5832 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5834 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5835 memcpy (name
+ 8 + len3
, stub
, len2
);
5836 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5837 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5840 if (sh
->root
.type
== bfd_link_hash_new
)
5842 sh
->root
.type
= bfd_link_hash_defined
;
5843 sh
->root
.u
.def
.section
= htab
->glink
;
5844 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5845 sh
->ref_regular
= 1;
5846 sh
->def_regular
= 1;
5847 sh
->ref_regular_nonweak
= 1;
5848 sh
->forced_local
= 1;
5850 sh
->root
.linker_def
= 1;
5855 /* Allocate NEED contiguous space in .got, and return the offset.
5856 Handles allocation of the got header when crossing 32k. */
5859 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5862 unsigned int max_before_header
;
5864 if (htab
->plt_type
== PLT_VXWORKS
)
5866 where
= htab
->got
->size
;
5867 htab
->got
->size
+= need
;
5871 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5872 if (need
<= htab
->got_gap
)
5874 where
= max_before_header
- htab
->got_gap
;
5875 htab
->got_gap
-= need
;
5879 if (htab
->got
->size
+ need
> max_before_header
5880 && htab
->got
->size
<= max_before_header
)
5882 htab
->got_gap
= max_before_header
- htab
->got
->size
;
5883 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
5885 where
= htab
->got
->size
;
5886 htab
->got
->size
+= need
;
5892 /* Allocate space in associated reloc sections for dynamic relocs. */
5895 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5897 struct bfd_link_info
*info
= inf
;
5898 struct ppc_elf_link_hash_entry
*eh
;
5899 struct ppc_elf_link_hash_table
*htab
;
5900 struct elf_dyn_relocs
*p
;
5902 if (h
->root
.type
== bfd_link_hash_indirect
)
5905 htab
= ppc_elf_hash_table (info
);
5906 if (htab
->elf
.dynamic_sections_created
5907 || h
->type
== STT_GNU_IFUNC
)
5909 struct plt_entry
*ent
;
5910 bfd_boolean doneone
= FALSE
;
5911 bfd_vma plt_offset
= 0, glink_offset
= 0;
5914 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5915 if (ent
->plt
.refcount
> 0)
5917 /* Make sure this symbol is output as a dynamic symbol. */
5918 if (h
->dynindx
== -1
5921 && htab
->elf
.dynamic_sections_created
)
5923 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5927 dyn
= htab
->elf
.dynamic_sections_created
;
5928 if (bfd_link_pic (info
)
5929 || h
->type
== STT_GNU_IFUNC
5930 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
5932 asection
*s
= htab
->plt
;
5933 if (!dyn
|| h
->dynindx
== -1)
5936 if (htab
->plt_type
== PLT_NEW
|| !dyn
|| h
->dynindx
== -1)
5940 plt_offset
= s
->size
;
5943 ent
->plt
.offset
= plt_offset
;
5946 if (!doneone
|| bfd_link_pic (info
))
5948 glink_offset
= s
->size
;
5949 s
->size
+= GLINK_ENTRY_SIZE
;
5950 if (h
== htab
->tls_get_addr
5951 && !htab
->params
->no_tls_get_addr_opt
)
5952 s
->size
+= TLS_GET_ADDR_GLINK_SIZE
- GLINK_ENTRY_SIZE
;
5955 && !bfd_link_pic (info
)
5959 h
->root
.u
.def
.section
= s
;
5960 h
->root
.u
.def
.value
= glink_offset
;
5962 ent
->glink_offset
= glink_offset
;
5964 if (htab
->params
->emit_stub_syms
5965 && !add_stub_sym (ent
, h
, info
))
5972 /* If this is the first .plt entry, make room
5973 for the special first entry. */
5975 s
->size
+= htab
->plt_initial_entry_size
;
5977 /* The PowerPC PLT is actually composed of two
5978 parts, the first part is 2 words (for a load
5979 and a jump), and then there is a remaining
5980 word available at the end. */
5981 plt_offset
= (htab
->plt_initial_entry_size
5982 + (htab
->plt_slot_size
5984 - htab
->plt_initial_entry_size
)
5985 / htab
->plt_entry_size
)));
5987 /* If this symbol is not defined in a regular
5988 file, and we are not generating a shared
5989 library, then set the symbol to this location
5990 in the .plt. This is to avoid text
5991 relocations, and is required to make
5992 function pointers compare as equal between
5993 the normal executable and the shared library. */
5994 if (! bfd_link_pic (info
)
5998 h
->root
.u
.def
.section
= s
;
5999 h
->root
.u
.def
.value
= plt_offset
;
6002 /* Make room for this entry. */
6003 s
->size
+= htab
->plt_entry_size
;
6004 /* After the 8192nd entry, room for two entries
6006 if (htab
->plt_type
== PLT_OLD
6007 && (s
->size
- htab
->plt_initial_entry_size
)
6008 / htab
->plt_entry_size
6009 > PLT_NUM_SINGLE_ENTRIES
)
6010 s
->size
+= htab
->plt_entry_size
;
6012 ent
->plt
.offset
= plt_offset
;
6015 /* We also need to make an entry in the .rela.plt section. */
6018 if (!htab
->elf
.dynamic_sections_created
6019 || h
->dynindx
== -1)
6020 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
6023 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
6025 if (htab
->plt_type
== PLT_VXWORKS
)
6027 /* Allocate space for the unloaded relocations. */
6028 if (!bfd_link_pic (info
)
6029 && htab
->elf
.dynamic_sections_created
)
6032 == (bfd_vma
) htab
->plt_initial_entry_size
)
6034 htab
->srelplt2
->size
6035 += (sizeof (Elf32_External_Rela
)
6036 * VXWORKS_PLTRESOLVE_RELOCS
);
6039 htab
->srelplt2
->size
6040 += (sizeof (Elf32_External_Rela
)
6041 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
6044 /* Every PLT entry has an associated GOT entry in
6046 htab
->sgotplt
->size
+= 4;
6053 ent
->plt
.offset
= (bfd_vma
) -1;
6056 ent
->plt
.offset
= (bfd_vma
) -1;
6060 h
->plt
.plist
= NULL
;
6066 h
->plt
.plist
= NULL
;
6070 eh
= (struct ppc_elf_link_hash_entry
*) h
;
6071 if (eh
->elf
.got
.refcount
> 0
6072 || (ELIMINATE_COPY_RELOCS
6073 && !eh
->elf
.def_regular
6074 && eh
->elf
.protected_def
6075 && eh
->has_addr16_ha
6076 && eh
->has_addr16_lo
6077 && htab
->params
->pic_fixup
> 0))
6082 /* Make sure this symbol is output as a dynamic symbol. */
6083 if (eh
->elf
.dynindx
== -1
6084 && !eh
->elf
.forced_local
6085 && eh
->elf
.type
!= STT_GNU_IFUNC
6086 && htab
->elf
.dynamic_sections_created
)
6088 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
6093 if ((eh
->tls_mask
& TLS_TLS
) != 0)
6095 if ((eh
->tls_mask
& TLS_LD
) != 0)
6097 if (!eh
->elf
.def_dynamic
)
6098 /* We'll just use htab->tlsld_got.offset. This should
6099 always be the case. It's a little odd if we have
6100 a local dynamic reloc against a non-local symbol. */
6101 htab
->tlsld_got
.refcount
+= 1;
6105 if ((eh
->tls_mask
& TLS_GD
) != 0)
6107 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6109 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
6115 eh
->elf
.got
.offset
= (bfd_vma
) -1;
6118 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
6119 dyn
= htab
->elf
.dynamic_sections_created
;
6120 if ((bfd_link_pic (info
)
6121 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
6122 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
6123 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
6125 asection
*rsec
= htab
->relgot
;
6127 if (eh
->elf
.type
== STT_GNU_IFUNC
)
6128 rsec
= htab
->reliplt
;
6129 /* All the entries we allocated need relocs.
6130 Except LD only needs one. */
6131 if ((eh
->tls_mask
& TLS_LD
) != 0
6132 && eh
->elf
.def_dynamic
)
6134 rsec
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
6139 eh
->elf
.got
.offset
= (bfd_vma
) -1;
6141 if (eh
->dyn_relocs
== NULL
6142 || !htab
->elf
.dynamic_sections_created
)
6145 /* In the shared -Bsymbolic case, discard space allocated for
6146 dynamic pc-relative relocs against symbols which turn out to be
6147 defined in regular objects. For the normal shared case, discard
6148 space for relocs that have become local due to symbol visibility
6151 if (bfd_link_pic (info
))
6153 /* Relocs that use pc_count are those that appear on a call insn,
6154 or certain REL relocs (see must_be_dyn_reloc) that can be
6155 generated via assembly. We want calls to protected symbols to
6156 resolve directly to the function rather than going via the plt.
6157 If people want function pointer comparisons to work as expected
6158 then they should avoid writing weird assembly. */
6159 if (SYMBOL_CALLS_LOCAL (info
, h
))
6161 struct elf_dyn_relocs
**pp
;
6163 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6165 p
->count
-= p
->pc_count
;
6174 if (htab
->is_vxworks
)
6176 struct elf_dyn_relocs
**pp
;
6178 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6180 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
6187 /* Discard relocs on undefined symbols that must be local. */
6188 if (eh
->dyn_relocs
!= NULL
6189 && h
->root
.type
== bfd_link_hash_undefined
6190 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
6191 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
6192 eh
->dyn_relocs
= NULL
;
6194 /* Also discard relocs on undefined weak syms with non-default
6196 if (eh
->dyn_relocs
!= NULL
6197 && h
->root
.type
== bfd_link_hash_undefweak
)
6199 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
6200 eh
->dyn_relocs
= NULL
;
6202 /* Make sure undefined weak symbols are output as a dynamic
6204 else if (h
->dynindx
== -1
6208 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6213 else if (ELIMINATE_COPY_RELOCS
)
6215 /* For the non-shared case, discard space for relocs against
6216 symbols which turn out to need copy relocs or are not
6221 && !(h
->protected_def
6222 && eh
->has_addr16_ha
6223 && eh
->has_addr16_lo
6224 && htab
->params
->pic_fixup
> 0))
6226 /* Make sure this symbol is output as a dynamic symbol.
6227 Undefined weak syms won't yet be marked as dynamic. */
6228 if (h
->dynindx
== -1
6229 && !h
->forced_local
)
6231 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6235 /* If that succeeded, we know we'll be keeping all the
6237 if (h
->dynindx
!= -1)
6241 eh
->dyn_relocs
= NULL
;
6246 /* Finally, allocate space. */
6247 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6249 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6250 if (eh
->elf
.type
== STT_GNU_IFUNC
)
6251 sreloc
= htab
->reliplt
;
6252 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6258 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6259 read-only sections. */
6262 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
6264 if (h
->root
.type
== bfd_link_hash_indirect
)
6267 if (readonly_dynrelocs (h
))
6269 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
6271 /* Not an error, just cut short the traversal. */
6277 static const unsigned char glink_eh_frame_cie
[] =
6279 0, 0, 0, 16, /* length. */
6280 0, 0, 0, 0, /* id. */
6281 1, /* CIE version. */
6282 'z', 'R', 0, /* Augmentation string. */
6283 4, /* Code alignment. */
6284 0x7c, /* Data alignment. */
6286 1, /* Augmentation size. */
6287 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6288 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6291 /* Set the sizes of the dynamic sections. */
6294 ppc_elf_size_dynamic_sections (bfd
*output_bfd
,
6295 struct bfd_link_info
*info
)
6297 struct ppc_elf_link_hash_table
*htab
;
6303 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6306 htab
= ppc_elf_hash_table (info
);
6307 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6309 if (elf_hash_table (info
)->dynamic_sections_created
)
6311 /* Set the contents of the .interp section to the interpreter. */
6312 if (bfd_link_executable (info
) && !info
->nointerp
)
6314 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6315 BFD_ASSERT (s
!= NULL
);
6316 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6317 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6321 if (htab
->plt_type
== PLT_OLD
)
6322 htab
->got_header_size
= 16;
6323 else if (htab
->plt_type
== PLT_NEW
)
6324 htab
->got_header_size
= 12;
6326 /* Set up .got offsets for local syms, and space for local dynamic
6328 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
6330 bfd_signed_vma
*local_got
;
6331 bfd_signed_vma
*end_local_got
;
6332 struct plt_entry
**local_plt
;
6333 struct plt_entry
**end_local_plt
;
6335 bfd_size_type locsymcount
;
6336 Elf_Internal_Shdr
*symtab_hdr
;
6338 if (!is_ppc_elf (ibfd
))
6341 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6343 struct ppc_dyn_relocs
*p
;
6345 for (p
= ((struct ppc_dyn_relocs
*)
6346 elf_section_data (s
)->local_dynrel
);
6350 if (!bfd_is_abs_section (p
->sec
)
6351 && bfd_is_abs_section (p
->sec
->output_section
))
6353 /* Input section has been discarded, either because
6354 it is a copy of a linkonce section or due to
6355 linker script /DISCARD/, so we'll be discarding
6358 else if (htab
->is_vxworks
6359 && strcmp (p
->sec
->output_section
->name
,
6362 /* Relocations in vxworks .tls_vars sections are
6363 handled specially by the loader. */
6365 else if (p
->count
!= 0)
6367 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6369 sreloc
= htab
->reliplt
;
6370 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6371 if ((p
->sec
->output_section
->flags
6372 & (SEC_READONLY
| SEC_ALLOC
))
6373 == (SEC_READONLY
| SEC_ALLOC
))
6374 info
->flags
|= DF_TEXTREL
;
6379 local_got
= elf_local_got_refcounts (ibfd
);
6383 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6384 locsymcount
= symtab_hdr
->sh_info
;
6385 end_local_got
= local_got
+ locsymcount
;
6386 local_plt
= (struct plt_entry
**) end_local_got
;
6387 end_local_plt
= local_plt
+ locsymcount
;
6388 lgot_masks
= (char *) end_local_plt
;
6390 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6393 unsigned int need
= 0;
6394 if ((*lgot_masks
& TLS_TLS
) != 0)
6396 if ((*lgot_masks
& TLS_GD
) != 0)
6398 if ((*lgot_masks
& TLS_LD
) != 0)
6399 htab
->tlsld_got
.refcount
+= 1;
6400 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6402 if ((*lgot_masks
& TLS_DTPREL
) != 0)
6408 *local_got
= (bfd_vma
) -1;
6411 *local_got
= allocate_got (htab
, need
);
6412 if (bfd_link_pic (info
))
6414 asection
*srel
= htab
->relgot
;
6415 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6416 srel
= htab
->reliplt
;
6417 srel
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
6422 *local_got
= (bfd_vma
) -1;
6424 if (htab
->is_vxworks
)
6427 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6428 for (; local_plt
< end_local_plt
; ++local_plt
)
6430 struct plt_entry
*ent
;
6431 bfd_boolean doneone
= FALSE
;
6432 bfd_vma plt_offset
= 0, glink_offset
= 0;
6434 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6435 if (ent
->plt
.refcount
> 0)
6441 plt_offset
= s
->size
;
6444 ent
->plt
.offset
= plt_offset
;
6447 if (!doneone
|| bfd_link_pic (info
))
6449 glink_offset
= s
->size
;
6450 s
->size
+= GLINK_ENTRY_SIZE
;
6452 ent
->glink_offset
= glink_offset
;
6456 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
6461 ent
->plt
.offset
= (bfd_vma
) -1;
6465 /* Allocate space for global sym dynamic relocs. */
6466 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6468 if (htab
->tlsld_got
.refcount
> 0)
6470 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6471 if (bfd_link_pic (info
))
6472 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
6475 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6477 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6479 unsigned int g_o_t
= 32768;
6481 /* If we haven't allocated the header, do so now. When we get here,
6482 for old plt/got the got size will be 0 to 32764 (not allocated),
6483 or 32780 to 65536 (header allocated). For new plt/got, the
6484 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6485 if (htab
->got
->size
<= 32768)
6487 g_o_t
= htab
->got
->size
;
6488 if (htab
->plt_type
== PLT_OLD
)
6490 htab
->got
->size
+= htab
->got_header_size
;
6493 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6495 if (bfd_link_pic (info
))
6497 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6499 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6500 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6502 if (info
->emitrelocations
)
6504 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6506 if (sda
!= NULL
&& sda
->ref_regular
)
6507 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6508 sda
= htab
->sdata
[1].sym
;
6509 if (sda
!= NULL
&& sda
->ref_regular
)
6510 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6513 if (htab
->glink
!= NULL
6514 && htab
->glink
->size
!= 0
6515 && htab
->elf
.dynamic_sections_created
)
6517 htab
->glink_pltresolve
= htab
->glink
->size
;
6518 /* Space for the branch table. ??? We don't need entries for
6519 non-dynamic symbols in this table. This case can arise with
6520 static ifuncs or forced local ifuncs. */
6521 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
6522 /* Pad out to align the start of PLTresolve. */
6523 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6525 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6527 if (htab
->params
->emit_stub_syms
)
6529 struct elf_link_hash_entry
*sh
;
6530 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6531 TRUE
, FALSE
, FALSE
);
6534 if (sh
->root
.type
== bfd_link_hash_new
)
6536 sh
->root
.type
= bfd_link_hash_defined
;
6537 sh
->root
.u
.def
.section
= htab
->glink
;
6538 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6539 sh
->ref_regular
= 1;
6540 sh
->def_regular
= 1;
6541 sh
->ref_regular_nonweak
= 1;
6542 sh
->forced_local
= 1;
6544 sh
->root
.linker_def
= 1;
6546 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6547 TRUE
, FALSE
, FALSE
);
6550 if (sh
->root
.type
== bfd_link_hash_new
)
6552 sh
->root
.type
= bfd_link_hash_defined
;
6553 sh
->root
.u
.def
.section
= htab
->glink
;
6554 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6555 sh
->ref_regular
= 1;
6556 sh
->def_regular
= 1;
6557 sh
->ref_regular_nonweak
= 1;
6558 sh
->forced_local
= 1;
6560 sh
->root
.linker_def
= 1;
6565 if (htab
->glink
!= NULL
6566 && htab
->glink
->size
!= 0
6567 && htab
->glink_eh_frame
!= NULL
6568 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6569 && _bfd_elf_eh_frame_present (info
))
6571 s
= htab
->glink_eh_frame
;
6572 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6573 if (bfd_link_pic (info
))
6576 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6581 /* We've now determined the sizes of the various dynamic sections.
6582 Allocate memory for them. */
6584 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6586 bfd_boolean strip_section
= TRUE
;
6588 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6594 /* We'd like to strip these sections if they aren't needed, but if
6595 we've exported dynamic symbols from them we must leave them.
6596 It's too late to tell BFD to get rid of the symbols. */
6597 if (htab
->elf
.hplt
!= NULL
)
6598 strip_section
= FALSE
;
6599 /* Strip this section if we don't need it; see the
6602 else if (s
== htab
->iplt
6604 || s
== htab
->glink_eh_frame
6605 || s
== htab
->sgotplt
6607 || s
== htab
->dynbss
6608 || s
== htab
->dynsbss
)
6610 /* Strip these too. */
6612 else if (s
== htab
->sdata
[0].section
6613 || s
== htab
->sdata
[1].section
)
6615 strip_section
= (s
->flags
& SEC_KEEP
) == 0;
6617 else if (CONST_STRNEQ (bfd_get_section_name (htab
->elf
.dynobj
, s
),
6622 /* Remember whether there are any relocation sections. */
6625 /* We use the reloc_count field as a counter if we need
6626 to copy relocs into the output file. */
6632 /* It's not one of our sections, so don't allocate space. */
6636 if (s
->size
== 0 && strip_section
)
6638 /* If we don't need this section, strip it from the
6639 output file. This is mostly to handle .rela.bss and
6640 .rela.plt. We must create both sections in
6641 create_dynamic_sections, because they must be created
6642 before the linker maps input sections to output
6643 sections. The linker does that before
6644 adjust_dynamic_symbol is called, and it is that
6645 function which decides whether anything needs to go
6646 into these sections. */
6647 s
->flags
|= SEC_EXCLUDE
;
6651 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
6654 /* Allocate memory for the section contents. */
6655 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
6656 if (s
->contents
== NULL
)
6660 if (htab
->elf
.dynamic_sections_created
)
6662 /* Add some entries to the .dynamic section. We fill in the
6663 values later, in ppc_elf_finish_dynamic_sections, but we
6664 must add the entries now so that we get the correct size for
6665 the .dynamic section. The DT_DEBUG entry is filled in by the
6666 dynamic linker and used by the debugger. */
6667 #define add_dynamic_entry(TAG, VAL) \
6668 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6670 if (bfd_link_executable (info
))
6672 if (!add_dynamic_entry (DT_DEBUG
, 0))
6676 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
6678 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6679 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6680 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6681 || !add_dynamic_entry (DT_JMPREL
, 0))
6685 if (htab
->plt_type
== PLT_NEW
6686 && htab
->glink
!= NULL
6687 && htab
->glink
->size
!= 0)
6689 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
6691 if (!htab
->params
->no_tls_get_addr_opt
6692 && htab
->tls_get_addr
!= NULL
6693 && htab
->tls_get_addr
->plt
.plist
!= NULL
6694 && !add_dynamic_entry (DT_PPC_OPT
, PPC_OPT_TLS
))
6700 if (!add_dynamic_entry (DT_RELA
, 0)
6701 || !add_dynamic_entry (DT_RELASZ
, 0)
6702 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
6706 /* If any dynamic relocs apply to a read-only section, then we
6707 need a DT_TEXTREL entry. */
6708 if ((info
->flags
& DF_TEXTREL
) == 0)
6709 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
6712 if ((info
->flags
& DF_TEXTREL
) != 0)
6714 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6717 if (htab
->is_vxworks
6718 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
6721 #undef add_dynamic_entry
6723 if (htab
->glink_eh_frame
!= NULL
6724 && htab
->glink_eh_frame
->contents
!= NULL
)
6726 unsigned char *p
= htab
->glink_eh_frame
->contents
;
6729 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
6730 /* CIE length (rewrite in case little-endian). */
6731 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
6732 p
+= sizeof (glink_eh_frame_cie
);
6734 val
= htab
->glink_eh_frame
->size
- 4 - sizeof (glink_eh_frame_cie
);
6735 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6738 val
= p
- htab
->glink_eh_frame
->contents
;
6739 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6741 /* Offset to .glink. Set later. */
6744 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
, p
);
6749 if (bfd_link_pic (info
)
6750 && htab
->elf
.dynamic_sections_created
)
6752 bfd_vma adv
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8) >> 2;
6754 *p
++ = DW_CFA_advance_loc
+ adv
;
6757 *p
++ = DW_CFA_advance_loc1
;
6760 else if (adv
< 65536)
6762 *p
++ = DW_CFA_advance_loc2
;
6763 bfd_put_16 (htab
->elf
.dynobj
, adv
, p
);
6768 *p
++ = DW_CFA_advance_loc4
;
6769 bfd_put_32 (htab
->elf
.dynobj
, adv
, p
);
6772 *p
++ = DW_CFA_register
;
6775 *p
++ = DW_CFA_advance_loc
+ 4;
6776 *p
++ = DW_CFA_restore_extended
;
6779 BFD_ASSERT ((bfd_vma
) ((p
+ 3 - htab
->glink_eh_frame
->contents
) & -4)
6780 == htab
->glink_eh_frame
->size
);
6786 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6787 if it looks like nothing is using them. */
6790 maybe_strip_sdasym (bfd
*output_bfd
, elf_linker_section_t
*lsect
)
6792 struct elf_link_hash_entry
*sda
= lsect
->sym
;
6794 if (sda
!= NULL
&& !sda
->ref_regular
&& sda
->dynindx
== -1)
6798 s
= bfd_get_section_by_name (output_bfd
, lsect
->name
);
6799 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6801 s
= bfd_get_section_by_name (output_bfd
, lsect
->bss_name
);
6802 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6804 sda
->def_regular
= 0;
6805 /* This is somewhat magic. See elf_link_output_extsym. */
6806 sda
->ref_dynamic
= 1;
6807 sda
->forced_local
= 0;
6814 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info
*info
)
6816 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6820 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[0]);
6821 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[1]);
6826 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6829 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6831 if (h
->plt
.plist
!= NULL
6833 && (!h
->pointer_equality_needed
6834 || !h
->ref_regular_nonweak
))
6837 return _bfd_elf_hash_symbol (h
);
6840 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6842 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6843 used for some functions that are allowed to break the ABI). */
6844 static const int shared_stub_entry
[] =
6846 0x7c0802a6, /* mflr 0 */
6847 0x429f0005, /* bcl 20, 31, .Lxxx */
6848 0x7d8802a6, /* mflr 12 */
6849 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6850 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6851 0x7c0803a6, /* mtlr 0 */
6852 0x7d8903a6, /* mtctr 12 */
6853 0x4e800420, /* bctr */
6856 static const int stub_entry
[] =
6858 0x3d800000, /* lis 12,xxx@ha */
6859 0x398c0000, /* addi 12,12,xxx@l */
6860 0x7d8903a6, /* mtctr 12 */
6861 0x4e800420, /* bctr */
6864 struct ppc_elf_relax_info
6866 unsigned int workaround_size
;
6867 unsigned int picfixup_size
;
6870 /* This function implements long branch trampolines, and the ppc476
6871 icache bug workaround. Any section needing trampolines or patch
6872 space for the workaround has its size extended so that we can
6873 add trampolines at the end of the section. */
6876 ppc_elf_relax_section (bfd
*abfd
,
6878 struct bfd_link_info
*link_info
,
6881 struct one_branch_fixup
6883 struct one_branch_fixup
*next
;
6885 /* Final link, can use the symbol offset. For a
6886 relocatable link we use the symbol's index. */
6891 Elf_Internal_Shdr
*symtab_hdr
;
6892 bfd_byte
*contents
= NULL
;
6893 Elf_Internal_Sym
*isymbuf
= NULL
;
6894 Elf_Internal_Rela
*internal_relocs
= NULL
;
6895 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6896 struct one_branch_fixup
*branch_fixups
= NULL
;
6897 struct ppc_elf_relax_info
*relax_info
= NULL
;
6898 unsigned changes
= 0;
6899 bfd_boolean workaround_change
;
6900 struct ppc_elf_link_hash_table
*htab
;
6901 bfd_size_type trampbase
, trampoff
, newsize
, picfixup_size
;
6903 bfd_boolean maybe_pasted
;
6907 /* No need to do anything with non-alloc or non-code sections. */
6908 if ((isec
->flags
& SEC_ALLOC
) == 0
6909 || (isec
->flags
& SEC_CODE
) == 0
6910 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6914 /* We cannot represent the required PIC relocs in the output, so don't
6915 do anything. The linker doesn't support mixing -shared and -r
6917 if (bfd_link_relocatable (link_info
) && bfd_link_pic (link_info
))
6920 htab
= ppc_elf_hash_table (link_info
);
6924 isec
->size
= (isec
->size
+ 3) & -4;
6925 if (isec
->rawsize
== 0)
6926 isec
->rawsize
= isec
->size
;
6927 trampbase
= isec
->size
;
6929 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6930 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6931 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6933 if (htab
->params
->ppc476_workaround
6934 || htab
->params
->pic_fixup
> 0)
6936 if (elf_section_data (isec
)->sec_info
== NULL
)
6938 elf_section_data (isec
)->sec_info
6939 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
6940 if (elf_section_data (isec
)->sec_info
== NULL
)
6943 relax_info
= elf_section_data (isec
)->sec_info
;
6944 trampbase
-= relax_info
->workaround_size
;
6947 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6948 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6949 /* Space for a branch around any trampolines. */
6950 trampoff
= trampbase
;
6951 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
6954 symtab_hdr
= &elf_symtab_hdr (abfd
);
6956 if (htab
->params
->branch_trampolines
6957 || htab
->params
->pic_fixup
> 0)
6959 /* Get a copy of the native relocations. */
6960 if (isec
->reloc_count
!= 0)
6962 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6963 link_info
->keep_memory
);
6964 if (internal_relocs
== NULL
)
6968 got2
= bfd_get_section_by_name (abfd
, ".got2");
6970 irelend
= internal_relocs
+ isec
->reloc_count
;
6971 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6973 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6976 struct one_branch_fixup
*f
;
6977 size_t insn_offset
= 0;
6978 bfd_vma max_branch_offset
= 0, val
;
6981 struct elf_link_hash_entry
*h
;
6982 struct plt_entry
**plist
;
6983 unsigned char sym_type
;
6988 case R_PPC_LOCAL24PC
:
6989 case R_PPC_PLTREL24
:
6990 max_branch_offset
= 1 << 25;
6994 case R_PPC_REL14_BRTAKEN
:
6995 case R_PPC_REL14_BRNTAKEN
:
6996 max_branch_offset
= 1 << 15;
6999 case R_PPC_ADDR16_HA
:
7000 if (htab
->params
->pic_fixup
> 0)
7008 /* Get the value of the symbol referred to by the reloc. */
7010 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
7012 /* A local symbol. */
7013 Elf_Internal_Sym
*isym
;
7015 /* Read this BFD's local symbols. */
7016 if (isymbuf
== NULL
)
7018 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7019 if (isymbuf
== NULL
)
7020 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
7021 symtab_hdr
->sh_info
, 0,
7026 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
7027 if (isym
->st_shndx
== SHN_UNDEF
)
7028 tsec
= bfd_und_section_ptr
;
7029 else if (isym
->st_shndx
== SHN_ABS
)
7030 tsec
= bfd_abs_section_ptr
;
7031 else if (isym
->st_shndx
== SHN_COMMON
)
7032 tsec
= bfd_com_section_ptr
;
7034 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
7036 toff
= isym
->st_value
;
7037 sym_type
= ELF_ST_TYPE (isym
->st_info
);
7041 /* Global symbol handling. */
7044 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
7045 h
= elf_sym_hashes (abfd
)[indx
];
7047 while (h
->root
.type
== bfd_link_hash_indirect
7048 || h
->root
.type
== bfd_link_hash_warning
)
7049 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7051 if (h
->root
.type
== bfd_link_hash_defined
7052 || h
->root
.type
== bfd_link_hash_defweak
)
7054 tsec
= h
->root
.u
.def
.section
;
7055 toff
= h
->root
.u
.def
.value
;
7057 else if (h
->root
.type
== bfd_link_hash_undefined
7058 || h
->root
.type
== bfd_link_hash_undefweak
)
7060 tsec
= bfd_und_section_ptr
;
7061 toff
= bfd_link_relocatable (link_info
) ? indx
: 0;
7066 /* If this branch is to __tls_get_addr then we may later
7067 optimise away the call. We won't be needing a long-
7068 branch stub in that case. */
7069 if (bfd_link_executable (link_info
)
7070 && h
== htab
->tls_get_addr
7071 && irel
!= internal_relocs
)
7073 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
7074 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
7075 unsigned int tls_mask
= 0;
7077 /* The previous reloc should be one of R_PPC_TLSGD or
7078 R_PPC_TLSLD, or for older object files, a reloc
7079 on the __tls_get_addr arg setup insn. Get tls
7080 mask bits from the symbol on that reloc. */
7081 if (t_symndx
< symtab_hdr
->sh_info
)
7083 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7085 if (local_got_offsets
!= NULL
)
7087 struct plt_entry
**local_plt
= (struct plt_entry
**)
7088 (local_got_offsets
+ symtab_hdr
->sh_info
);
7089 char *lgot_masks
= (char *)
7090 (local_plt
+ symtab_hdr
->sh_info
);
7091 tls_mask
= lgot_masks
[t_symndx
];
7096 struct elf_link_hash_entry
*th
7097 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
7099 while (th
->root
.type
== bfd_link_hash_indirect
7100 || th
->root
.type
== bfd_link_hash_warning
)
7101 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
7104 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
7107 /* The mask bits tell us if the call will be
7109 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
7110 && (t_rtype
== R_PPC_TLSGD
7111 || t_rtype
== R_PPC_GOT_TLSGD16
7112 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
7114 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
7115 && (t_rtype
== R_PPC_TLSLD
7116 || t_rtype
== R_PPC_GOT_TLSLD16
7117 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
7124 if (r_type
== R_PPC_ADDR16_HA
)
7129 && ppc_elf_hash_entry (h
)->has_addr16_ha
7130 && ppc_elf_hash_entry (h
)->has_addr16_lo
)
7131 picfixup_size
+= 12;
7135 /* The condition here under which we call find_plt_ent must
7136 match that in relocate_section. If we call find_plt_ent here
7137 but not in relocate_section, or vice versa, then the branch
7138 destination used here may be incorrect. */
7142 /* We know is_branch_reloc (r_type) is true. */
7143 if (h
->type
== STT_GNU_IFUNC
7144 || r_type
== R_PPC_PLTREL24
)
7145 plist
= &h
->plt
.plist
;
7147 else if (sym_type
== STT_GNU_IFUNC
7148 && elf_local_got_offsets (abfd
) != NULL
)
7150 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7151 struct plt_entry
**local_plt
= (struct plt_entry
**)
7152 (local_got_offsets
+ symtab_hdr
->sh_info
);
7153 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
7158 struct plt_entry
*ent
;
7160 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (link_info
))
7161 addend
= irel
->r_addend
;
7162 ent
= find_plt_ent (plist
, got2
, addend
);
7165 if (htab
->plt_type
== PLT_NEW
7167 || !htab
->elf
.dynamic_sections_created
7168 || h
->dynindx
== -1)
7171 toff
= ent
->glink_offset
;
7176 toff
= ent
->plt
.offset
;
7181 /* If the branch and target are in the same section, you have
7182 no hope of adding stubs. We'll error out later should the
7187 /* There probably isn't any reason to handle symbols in
7188 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7189 attribute for a code section, and we are only looking at
7190 branches. However, implement it correctly here as a
7191 reference for other target relax_section functions. */
7192 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
7194 /* At this stage in linking, no SEC_MERGE symbol has been
7195 adjusted, so all references to such symbols need to be
7196 passed through _bfd_merged_section_offset. (Later, in
7197 relocate_section, all SEC_MERGE symbols *except* for
7198 section symbols have been adjusted.)
7200 gas may reduce relocations against symbols in SEC_MERGE
7201 sections to a relocation against the section symbol when
7202 the original addend was zero. When the reloc is against
7203 a section symbol we should include the addend in the
7204 offset passed to _bfd_merged_section_offset, since the
7205 location of interest is the original symbol. On the
7206 other hand, an access to "sym+addend" where "sym" is not
7207 a section symbol should not include the addend; Such an
7208 access is presumed to be an offset from "sym"; The
7209 location of interest is just "sym". */
7210 if (sym_type
== STT_SECTION
)
7211 toff
+= irel
->r_addend
;
7214 = _bfd_merged_section_offset (abfd
, &tsec
,
7215 elf_section_data (tsec
)->sec_info
,
7218 if (sym_type
!= STT_SECTION
)
7219 toff
+= irel
->r_addend
;
7221 /* PLTREL24 addends are special. */
7222 else if (r_type
!= R_PPC_PLTREL24
)
7223 toff
+= irel
->r_addend
;
7225 /* Attempted -shared link of non-pic code loses. */
7226 if ((!bfd_link_relocatable (link_info
)
7227 && tsec
== bfd_und_section_ptr
)
7228 || tsec
->output_section
== NULL
7229 || (tsec
->owner
!= NULL
7230 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
7233 roff
= irel
->r_offset
;
7235 /* If the branch is in range, no need to do anything. */
7236 if (tsec
!= bfd_und_section_ptr
7237 && (!bfd_link_relocatable (link_info
)
7238 /* A relocatable link may have sections moved during
7239 final link, so do not presume they remain in range. */
7240 || tsec
->output_section
== isec
->output_section
))
7242 bfd_vma symaddr
, reladdr
;
7244 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7245 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7246 if (symaddr
- reladdr
+ max_branch_offset
7247 < 2 * max_branch_offset
)
7251 /* Look for an existing fixup to this address. */
7252 for (f
= branch_fixups
; f
; f
= f
->next
)
7253 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7259 unsigned long stub_rtype
;
7261 val
= trampoff
- roff
;
7262 if (val
>= max_branch_offset
)
7263 /* Oh dear, we can't reach a trampoline. Don't try to add
7264 one. We'll report an error later. */
7267 if (bfd_link_pic (link_info
))
7269 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7274 size
= 4 * ARRAY_SIZE (stub_entry
);
7277 stub_rtype
= R_PPC_RELAX
;
7278 if (tsec
== htab
->plt
7279 || tsec
== htab
->glink
)
7281 stub_rtype
= R_PPC_RELAX_PLT
;
7282 if (r_type
== R_PPC_PLTREL24
)
7283 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7286 /* Hijack the old relocation. Since we need two
7287 relocations for this use a "composite" reloc. */
7288 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7290 irel
->r_offset
= trampoff
+ insn_offset
;
7291 if (r_type
== R_PPC_PLTREL24
7292 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7295 /* Record the fixup so we don't do it again this section. */
7296 f
= bfd_malloc (sizeof (*f
));
7297 f
->next
= branch_fixups
;
7300 f
->trampoff
= trampoff
;
7308 val
= f
->trampoff
- roff
;
7309 if (val
>= max_branch_offset
)
7312 /* Nop out the reloc, since we're finalizing things here. */
7313 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7316 /* Get the section contents. */
7317 if (contents
== NULL
)
7319 /* Get cached copy if it exists. */
7320 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7321 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7322 /* Go get them off disk. */
7323 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7327 /* Fix up the existing branch to hit the trampoline. */
7328 hit_addr
= contents
+ roff
;
7332 case R_PPC_LOCAL24PC
:
7333 case R_PPC_PLTREL24
:
7334 t0
= bfd_get_32 (abfd
, hit_addr
);
7336 t0
|= val
& 0x3fffffc;
7337 bfd_put_32 (abfd
, t0
, hit_addr
);
7341 case R_PPC_REL14_BRTAKEN
:
7342 case R_PPC_REL14_BRNTAKEN
:
7343 t0
= bfd_get_32 (abfd
, hit_addr
);
7346 bfd_put_32 (abfd
, t0
, hit_addr
);
7351 while (branch_fixups
!= NULL
)
7353 struct one_branch_fixup
*f
= branch_fixups
;
7354 branch_fixups
= branch_fixups
->next
;
7359 workaround_change
= FALSE
;
7361 if (htab
->params
->ppc476_workaround
7362 && (!bfd_link_relocatable (link_info
)
7363 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7365 bfd_vma addr
, end_addr
;
7366 unsigned int crossings
;
7367 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7369 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7370 end_addr
= addr
+ trampoff
;
7372 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7375 /* Keep space aligned, to ensure the patch code itself does
7376 not cross a page. Don't decrease size calculated on a
7377 previous pass as otherwise we might never settle on a layout. */
7378 newsize
= 15 - ((end_addr
- 1) & 15);
7379 newsize
+= crossings
* 16;
7380 if (relax_info
->workaround_size
< newsize
)
7382 relax_info
->workaround_size
= newsize
;
7383 workaround_change
= TRUE
;
7385 /* Ensure relocate_section is called. */
7386 isec
->flags
|= SEC_RELOC
;
7388 newsize
= trampoff
+ relax_info
->workaround_size
;
7391 if (htab
->params
->pic_fixup
> 0)
7393 picfixup_size
-= relax_info
->picfixup_size
;
7394 if (picfixup_size
!= 0)
7395 relax_info
->picfixup_size
+= picfixup_size
;
7396 newsize
+= relax_info
->picfixup_size
;
7399 if (changes
!= 0 || picfixup_size
!= 0 || workaround_change
)
7400 isec
->size
= newsize
;
7403 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7405 if (! link_info
->keep_memory
)
7409 /* Cache the symbols for elf_link_input_bfd. */
7410 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7414 if (contents
!= NULL
7415 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7417 if (!changes
&& !link_info
->keep_memory
)
7421 /* Cache the section contents for elf_link_input_bfd. */
7422 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7426 changes
+= picfixup_size
;
7429 /* Append sufficient NOP relocs so we can write out relocation
7430 information for the trampolines. */
7431 Elf_Internal_Shdr
*rel_hdr
;
7432 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7433 * sizeof (*new_relocs
));
7438 memcpy (new_relocs
, internal_relocs
,
7439 isec
->reloc_count
* sizeof (*new_relocs
));
7440 for (ix
= changes
; ix
--;)
7442 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7444 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7446 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7447 free (internal_relocs
);
7448 elf_section_data (isec
)->relocs
= new_relocs
;
7449 isec
->reloc_count
+= changes
;
7450 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7451 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7453 else if (internal_relocs
!= NULL
7454 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7455 free (internal_relocs
);
7457 *again
= changes
!= 0 || workaround_change
;
7461 while (branch_fixups
!= NULL
)
7463 struct one_branch_fixup
*f
= branch_fixups
;
7464 branch_fixups
= branch_fixups
->next
;
7467 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7469 if (contents
!= NULL
7470 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7472 if (internal_relocs
!= NULL
7473 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7474 free (internal_relocs
);
7478 /* What to do when ld finds relocations against symbols defined in
7479 discarded sections. */
7482 ppc_elf_action_discarded (asection
*sec
)
7484 if (strcmp (".fixup", sec
->name
) == 0)
7487 if (strcmp (".got2", sec
->name
) == 0)
7490 return _bfd_elf_default_action_discarded (sec
);
7493 /* Fill in the address for a pointer generated in a linker section. */
7496 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7497 elf_linker_section_t
*lsect
,
7498 struct elf_link_hash_entry
*h
,
7500 const Elf_Internal_Rela
*rel
)
7502 elf_linker_section_pointers_t
*linker_section_ptr
;
7504 BFD_ASSERT (lsect
!= NULL
);
7508 /* Handle global symbol. */
7509 struct ppc_elf_link_hash_entry
*eh
;
7511 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7512 BFD_ASSERT (eh
->elf
.def_regular
);
7513 linker_section_ptr
= eh
->linker_section_pointer
;
7517 /* Handle local symbol. */
7518 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7520 BFD_ASSERT (is_ppc_elf (input_bfd
));
7521 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7522 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7525 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7528 BFD_ASSERT (linker_section_ptr
!= NULL
);
7530 /* Offset will always be a multiple of four, so use the bottom bit
7531 as a "written" flag. */
7532 if ((linker_section_ptr
->offset
& 1) == 0)
7534 bfd_put_32 (lsect
->section
->owner
,
7535 relocation
+ linker_section_ptr
->addend
,
7536 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7537 linker_section_ptr
->offset
+= 1;
7540 relocation
= (lsect
->section
->output_section
->vma
7541 + lsect
->section
->output_offset
7542 + linker_section_ptr
->offset
- 1
7543 - SYM_VAL (lsect
->sym
));
7547 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7548 lsect
->name
, (long) relocation
, (long) relocation
);
7554 #define PPC_LO(v) ((v) & 0xffff)
7555 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7556 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7559 write_glink_stub (struct plt_entry
*ent
, asection
*plt_sec
, unsigned char *p
,
7560 struct bfd_link_info
*info
)
7562 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7563 bfd
*output_bfd
= info
->output_bfd
;
7566 plt
= ((ent
->plt
.offset
& ~1)
7567 + plt_sec
->output_section
->vma
7568 + plt_sec
->output_offset
);
7570 if (bfd_link_pic (info
))
7574 if (ent
->addend
>= 32768)
7576 + ent
->sec
->output_section
->vma
7577 + ent
->sec
->output_offset
);
7578 else if (htab
->elf
.hgot
!= NULL
)
7579 got
= SYM_VAL (htab
->elf
.hgot
);
7583 if (plt
+ 0x8000 < 0x10000)
7585 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7587 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7589 bfd_put_32 (output_bfd
, BCTR
, p
);
7591 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7596 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7598 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7600 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7602 bfd_put_32 (output_bfd
, BCTR
, p
);
7608 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7610 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7612 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7614 bfd_put_32 (output_bfd
, BCTR
, p
);
7619 /* Return true if symbol is defined statically. */
7622 is_static_defined (struct elf_link_hash_entry
*h
)
7624 return ((h
->root
.type
== bfd_link_hash_defined
7625 || h
->root
.type
== bfd_link_hash_defweak
)
7626 && h
->root
.u
.def
.section
!= NULL
7627 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7630 /* If INSN is an opcode that may be used with an @tls operand, return
7631 the transformed insn for TLS optimisation, otherwise return 0. If
7632 REG is non-zero only match an insn with RB or RA equal to REG. */
7635 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7639 if ((insn
& (0x3f << 26)) != 31 << 26)
7642 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7643 rtra
= insn
& ((1 << 26) - (1 << 16));
7644 else if (((insn
>> 16) & 0x1f) == reg
)
7645 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7649 if ((insn
& (0x3ff << 1)) == 266 << 1)
7652 else if ((insn
& (0x1f << 1)) == 23 << 1
7653 && ((insn
& (0x1f << 6)) < 14 << 6
7654 || ((insn
& (0x1f << 6)) >= 16 << 6
7655 && (insn
& (0x1f << 6)) < 24 << 6)))
7656 /* load and store indexed -> dform. */
7657 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7658 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7659 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7660 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7661 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7663 insn
= (58 << 26) | 2;
7670 /* If INSN is an opcode that may be used with an @tprel operand, return
7671 the transformed insn for an undefined weak symbol, ie. with the
7672 thread pointer REG operand removed. Otherwise return 0. */
7675 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7677 if ((insn
& (0x1f << 16)) == reg
<< 16
7678 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7679 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7680 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7681 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7682 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7683 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7684 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7685 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7686 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7687 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7688 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7689 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7690 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7691 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7692 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7693 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7695 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7696 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7698 insn
&= ~(0x1f << 16);
7700 else if ((insn
& (0x1f << 21)) == reg
<< 21
7701 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7702 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7703 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7705 insn
&= ~(0x1f << 21);
7706 insn
|= (insn
& (0x1f << 16)) << 5;
7707 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7708 insn
-= 2 >> 26; /* convert to ori,oris */
7716 is_insn_ds_form (unsigned int insn
)
7718 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7719 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7720 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7721 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7725 is_insn_dq_form (unsigned int insn
)
7727 return ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
7728 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7729 && (insn
& 3) == 1));
7732 /* The RELOCATE_SECTION function is called by the ELF backend linker
7733 to handle the relocations for a section.
7735 The relocs are always passed as Rela structures; if the section
7736 actually uses Rel structures, the r_addend field will always be
7739 This function is responsible for adjust the section contents as
7740 necessary, and (if using Rela relocs and generating a
7741 relocatable output file) adjusting the reloc addend as
7744 This function does not have to worry about setting the reloc
7745 address or the reloc symbol index.
7747 LOCAL_SYMS is a pointer to the swapped in local symbols.
7749 LOCAL_SECTIONS is an array giving the section in the input file
7750 corresponding to the st_shndx field of each local symbol.
7752 The global hash table entry for the global symbols can be found
7753 via elf_sym_hashes (input_bfd).
7755 When generating relocatable output, this function must handle
7756 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7757 going to be the section symbol corresponding to the output
7758 section, which means that the addend must be adjusted
7762 ppc_elf_relocate_section (bfd
*output_bfd
,
7763 struct bfd_link_info
*info
,
7765 asection
*input_section
,
7767 Elf_Internal_Rela
*relocs
,
7768 Elf_Internal_Sym
*local_syms
,
7769 asection
**local_sections
)
7771 Elf_Internal_Shdr
*symtab_hdr
;
7772 struct elf_link_hash_entry
**sym_hashes
;
7773 struct ppc_elf_link_hash_table
*htab
;
7774 Elf_Internal_Rela
*rel
;
7775 Elf_Internal_Rela
*wrel
;
7776 Elf_Internal_Rela
*relend
;
7777 Elf_Internal_Rela outrel
;
7779 bfd_vma
*local_got_offsets
;
7780 bfd_boolean ret
= TRUE
;
7781 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
7782 bfd_boolean is_vxworks_tls
;
7783 unsigned int picfixup_size
= 0;
7784 struct ppc_elf_relax_info
*relax_info
= NULL
;
7787 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7788 "%ld relocations%s",
7789 input_bfd
, input_section
,
7790 (long) input_section
->reloc_count
,
7791 (bfd_link_relocatable (info
)) ? " (relocatable)" : "");
7794 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7796 /* Initialize howto table if not already done. */
7797 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7798 ppc_elf_howto_init ();
7800 htab
= ppc_elf_hash_table (info
);
7801 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7802 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7803 sym_hashes
= elf_sym_hashes (input_bfd
);
7804 /* We have to handle relocations in vxworks .tls_vars sections
7805 specially, because the dynamic loader is 'weird'. */
7806 is_vxworks_tls
= (htab
->is_vxworks
&& bfd_link_pic (info
)
7807 && !strcmp (input_section
->output_section
->name
,
7809 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
)
7810 relax_info
= elf_section_data (input_section
)->sec_info
;
7811 rel
= wrel
= relocs
;
7812 relend
= relocs
+ input_section
->reloc_count
;
7813 for (; rel
< relend
; wrel
++, rel
++)
7815 enum elf_ppc_reloc_type r_type
;
7817 bfd_reloc_status_type r
;
7818 Elf_Internal_Sym
*sym
;
7820 struct elf_link_hash_entry
*h
;
7821 const char *sym_name
;
7822 reloc_howto_type
*howto
;
7823 unsigned long r_symndx
;
7825 bfd_vma branch_bit
, from
;
7826 bfd_boolean unresolved_reloc
;
7828 unsigned int tls_type
, tls_mask
, tls_gd
;
7829 struct plt_entry
**ifunc
;
7830 struct reloc_howto_struct alt_howto
;
7833 r_type
= ELF32_R_TYPE (rel
->r_info
);
7837 unresolved_reloc
= FALSE
;
7839 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7841 if (r_symndx
< symtab_hdr
->sh_info
)
7843 sym
= local_syms
+ r_symndx
;
7844 sec
= local_sections
[r_symndx
];
7845 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7847 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7851 bfd_boolean ignored
;
7853 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7854 r_symndx
, symtab_hdr
, sym_hashes
,
7856 unresolved_reloc
, warned
, ignored
);
7858 sym_name
= h
->root
.root
.string
;
7861 if (sec
!= NULL
&& discarded_section (sec
))
7863 /* For relocs against symbols from removed linkonce sections,
7864 or sections discarded by a linker script, we just want the
7865 section contents zeroed. Avoid any special processing. */
7867 if (r_type
< R_PPC_max
)
7868 howto
= ppc_elf_howto_table
[r_type
];
7870 _bfd_clear_contents (howto
, input_bfd
, input_section
,
7871 contents
+ rel
->r_offset
);
7872 wrel
->r_offset
= rel
->r_offset
;
7876 /* For ld -r, remove relocations in debug sections against
7877 sections defined in discarded sections. Not done for
7878 non-debug to preserve relocs in .eh_frame which the
7879 eh_frame editing code expects to be present. */
7880 if (bfd_link_relocatable (info
)
7881 && (input_section
->flags
& SEC_DEBUGGING
))
7887 if (bfd_link_relocatable (info
))
7890 && r_type
== R_PPC_PLTREL24
7891 && rel
->r_addend
!= 0)
7893 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7894 addend specifies the GOT pointer offset within .got2. */
7895 rel
->r_addend
+= got2
->output_offset
;
7897 if (r_type
!= R_PPC_RELAX_PLT
7898 && r_type
!= R_PPC_RELAX_PLTREL24
7899 && r_type
!= R_PPC_RELAX
)
7903 /* TLS optimizations. Replace instruction sequences and relocs
7904 based on information we collected in tls_optimize. We edit
7905 RELOCS so that --emit-relocs will output something sensible
7906 for the final instruction stream. */
7910 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7911 else if (local_got_offsets
!= NULL
)
7913 struct plt_entry
**local_plt
;
7916 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7917 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7918 tls_mask
= lgot_masks
[r_symndx
];
7921 /* Ensure reloc mapping code below stays sane. */
7922 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7923 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7924 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7925 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7926 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7927 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7928 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7929 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
7936 case R_PPC_GOT_TPREL16
:
7937 case R_PPC_GOT_TPREL16_LO
:
7938 if ((tls_mask
& TLS_TLS
) != 0
7939 && (tls_mask
& TLS_TPREL
) == 0)
7943 insn
= bfd_get_32 (output_bfd
,
7944 contents
+ rel
->r_offset
- d_offset
);
7946 insn
|= 0x3c020000; /* addis 0,2,0 */
7947 bfd_put_32 (output_bfd
, insn
,
7948 contents
+ rel
->r_offset
- d_offset
);
7949 r_type
= R_PPC_TPREL16_HA
;
7950 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7955 if ((tls_mask
& TLS_TLS
) != 0
7956 && (tls_mask
& TLS_TPREL
) == 0)
7960 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7961 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
7964 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7965 r_type
= R_PPC_TPREL16_LO
;
7966 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7968 /* Was PPC_TLS which sits on insn boundary, now
7969 PPC_TPREL16_LO which is at low-order half-word. */
7970 rel
->r_offset
+= d_offset
;
7974 case R_PPC_GOT_TLSGD16_HI
:
7975 case R_PPC_GOT_TLSGD16_HA
:
7976 tls_gd
= TLS_TPRELGD
;
7977 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7981 case R_PPC_GOT_TLSLD16_HI
:
7982 case R_PPC_GOT_TLSLD16_HA
:
7983 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7986 if ((tls_mask
& tls_gd
) != 0)
7987 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7988 + R_PPC_GOT_TPREL16
);
7991 rel
->r_offset
-= d_offset
;
7992 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
7993 r_type
= R_PPC_NONE
;
7995 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7999 case R_PPC_GOT_TLSGD16
:
8000 case R_PPC_GOT_TLSGD16_LO
:
8001 tls_gd
= TLS_TPRELGD
;
8002 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
8006 case R_PPC_GOT_TLSLD16
:
8007 case R_PPC_GOT_TLSLD16_LO
:
8008 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
8010 unsigned int insn1
, insn2
;
8014 offset
= (bfd_vma
) -1;
8015 /* If not using the newer R_PPC_TLSGD/LD to mark
8016 __tls_get_addr calls, we must trust that the call
8017 stays with its arg setup insns, ie. that the next
8018 reloc is the __tls_get_addr call associated with
8019 the current reloc. Edit both insns. */
8020 if (input_section
->has_tls_get_addr_call
8022 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
8023 htab
->tls_get_addr
))
8024 offset
= rel
[1].r_offset
;
8025 /* We read the low GOT_TLS insn because we need to keep
8026 the destination reg. It may be something other than
8027 the usual r3, and moved to r3 before the call by
8028 intervening code. */
8029 insn1
= bfd_get_32 (output_bfd
,
8030 contents
+ rel
->r_offset
- d_offset
);
8031 if ((tls_mask
& tls_gd
) != 0)
8034 insn1
&= (0x1f << 21) | (0x1f << 16);
8035 insn1
|= 32 << 26; /* lwz */
8036 if (offset
!= (bfd_vma
) -1)
8038 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8039 insn2
= 0x7c631214; /* add 3,3,2 */
8040 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
8042 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
8043 + R_PPC_GOT_TPREL16
);
8044 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8049 insn1
&= 0x1f << 21;
8050 insn1
|= 0x3c020000; /* addis r,2,0 */
8053 /* Was an LD reloc. */
8055 r_symndx
< symtab_hdr
->sh_info
;
8057 if (local_sections
[r_symndx
] == sec
)
8059 if (r_symndx
>= symtab_hdr
->sh_info
)
8060 r_symndx
= STN_UNDEF
;
8061 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8062 if (r_symndx
!= STN_UNDEF
)
8063 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8064 + sec
->output_offset
8065 + sec
->output_section
->vma
);
8067 r_type
= R_PPC_TPREL16_HA
;
8068 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8069 if (offset
!= (bfd_vma
) -1)
8071 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8072 rel
[1].r_offset
= offset
+ d_offset
;
8073 rel
[1].r_addend
= rel
->r_addend
;
8074 insn2
= 0x38630000; /* addi 3,3,0 */
8075 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
8078 bfd_put_32 (output_bfd
, insn1
,
8079 contents
+ rel
->r_offset
- d_offset
);
8082 /* We changed the symbol on an LD reloc. Start over
8083 in order to get h, sym, sec etc. right. */
8090 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
8093 bfd_vma offset
= rel
->r_offset
;
8095 if ((tls_mask
& TLS_TPRELGD
) != 0)
8098 r_type
= R_PPC_NONE
;
8099 insn2
= 0x7c631214; /* add 3,3,2 */
8104 r_type
= R_PPC_TPREL16_LO
;
8105 rel
->r_offset
+= d_offset
;
8106 insn2
= 0x38630000; /* addi 3,3,0 */
8108 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8109 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
8110 /* Zap the reloc on the _tls_get_addr call too. */
8111 BFD_ASSERT (offset
== rel
[1].r_offset
);
8112 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8117 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
8122 r_symndx
< symtab_hdr
->sh_info
;
8124 if (local_sections
[r_symndx
] == sec
)
8126 if (r_symndx
>= symtab_hdr
->sh_info
)
8127 r_symndx
= STN_UNDEF
;
8128 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8129 if (r_symndx
!= STN_UNDEF
)
8130 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8131 + sec
->output_offset
8132 + sec
->output_section
->vma
);
8134 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8135 rel
->r_offset
+= d_offset
;
8136 insn2
= 0x38630000; /* addi 3,3,0 */
8137 bfd_put_32 (output_bfd
, insn2
,
8138 contents
+ rel
->r_offset
- d_offset
);
8139 /* Zap the reloc on the _tls_get_addr call too. */
8140 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
8141 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8147 /* Handle other relocations that tweak non-addend part of insn. */
8154 /* Branch taken prediction relocations. */
8155 case R_PPC_ADDR14_BRTAKEN
:
8156 case R_PPC_REL14_BRTAKEN
:
8157 branch_bit
= BRANCH_PREDICT_BIT
;
8160 /* Branch not taken prediction relocations. */
8161 case R_PPC_ADDR14_BRNTAKEN
:
8162 case R_PPC_REL14_BRNTAKEN
:
8166 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
8167 insn
&= ~BRANCH_PREDICT_BIT
;
8170 from
= (rel
->r_offset
8171 + input_section
->output_offset
8172 + input_section
->output_section
->vma
);
8174 /* Invert 'y' bit if not the default. */
8175 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
8176 insn
^= BRANCH_PREDICT_BIT
;
8178 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8183 if (ELIMINATE_COPY_RELOCS
8187 && ppc_elf_hash_entry (h
)->has_addr16_ha
8188 && ppc_elf_hash_entry (h
)->has_addr16_lo
8189 && htab
->params
->pic_fixup
> 0)
8191 /* Convert lis;addi or lis;load/store accessing a protected
8192 variable defined in a shared library to PIC. */
8195 if (r_type
== R_PPC_ADDR16_HA
)
8197 insn
= bfd_get_32 (output_bfd
,
8198 contents
+ rel
->r_offset
- d_offset
);
8199 if ((insn
& (0x3f << 26)) == (15u << 26)
8200 && (insn
& (0x1f << 16)) == 0 /* lis */)
8206 p
= (contents
+ input_section
->size
8207 - relax_info
->workaround_size
8208 - relax_info
->picfixup_size
8210 off
= (p
- contents
) - (rel
->r_offset
- d_offset
);
8211 if (off
> 0x1fffffc || (off
& 3) != 0)
8212 info
->callbacks
->einfo
8213 (_("%P: %H: fixup branch overflow\n"),
8214 input_bfd
, input_section
, rel
->r_offset
);
8216 bfd_put_32 (output_bfd
, B
| off
,
8217 contents
+ rel
->r_offset
- d_offset
);
8218 got_addr
= (htab
->got
->output_section
->vma
8219 + htab
->got
->output_offset
8220 + (h
->got
.offset
& ~1));
8221 wrel
->r_offset
= (p
- contents
) + d_offset
;
8222 wrel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_HA
);
8223 wrel
->r_addend
= got_addr
;
8225 insn
|= ((unsigned int )(got_addr
+ 0x8000) >> 16) & 0xffff;
8226 bfd_put_32 (output_bfd
, insn
, p
);
8228 /* Convert lis to lwz, loading address from GOT. */
8230 insn
^= (32u ^ 15u) << 26;
8231 insn
|= (insn
& (0x1f << 21)) >> 5;
8232 insn
|= got_addr
& 0xffff;
8233 bfd_put_32 (output_bfd
, insn
, p
+ 4);
8235 bfd_put_32 (output_bfd
, B
| ((-4 - off
) & 0x3ffffff), p
+ 8);
8236 picfixup_size
+= 12;
8238 /* Use one of the spare relocs, so --emit-relocs
8239 output is reasonable. */
8240 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8242 rel
->r_offset
= wrel
[-1].r_offset
+ 4;
8243 rel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_LO
);
8244 rel
->r_addend
= wrel
[-1].r_addend
;
8246 /* Continue on as if we had a got reloc, to output
8248 r_type
= R_PPC_GOT16_LO
;
8251 info
->callbacks
->einfo
8252 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8253 input_bfd
, input_section
, rel
->r_offset
,
8254 "R_PPC_ADDR16_HA", insn
);
8256 else if (r_type
== R_PPC_ADDR16_LO
)
8258 insn
= bfd_get_32 (output_bfd
,
8259 contents
+ rel
->r_offset
- d_offset
);
8260 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8261 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8262 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8263 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8264 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8265 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8266 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8267 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8268 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8269 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8270 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8271 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8272 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8273 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8274 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8276 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8277 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
8279 /* Arrange to apply the reloc addend, if any. */
8281 unresolved_reloc
= FALSE
;
8282 rel
->r_info
= ELF32_R_INFO (0, r_type
);
8285 info
->callbacks
->einfo
8286 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8287 input_bfd
, input_section
, rel
->r_offset
,
8288 "R_PPC_ADDR16_LO", insn
);
8293 if (!htab
->is_vxworks
)
8295 struct plt_entry
*ent
;
8299 if (h
->type
== STT_GNU_IFUNC
)
8300 ifunc
= &h
->plt
.plist
;
8302 else if (local_got_offsets
!= NULL
8303 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8305 struct plt_entry
**local_plt
;
8307 local_plt
= (struct plt_entry
**) (local_got_offsets
8308 + symtab_hdr
->sh_info
);
8309 ifunc
= local_plt
+ r_symndx
;
8314 && (!bfd_link_pic (info
)
8315 || is_branch_reloc (r_type
)))
8318 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
8319 addend
= rel
->r_addend
;
8320 ent
= find_plt_ent (ifunc
, got2
, addend
);
8324 if (bfd_link_pic (info
)
8326 && htab
->plt_type
!= PLT_NEW
8327 && (!htab
->elf
.dynamic_sections_created
8329 || h
->dynindx
== -1))
8331 /* Uh oh, we are going to create a pic glink stub
8332 for an ifunc (here for h == NULL and later in
8333 finish_dynamic_symbol for h != NULL), and
8334 apparently are using code compiled with
8335 -mbss-plt. The difficulty is that -mbss-plt code
8336 gives no indication via a magic PLTREL24 addend
8337 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8338 is pointing into a .got2 section (and how far
8340 info
->callbacks
->einfo
8341 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8342 input_bfd
, input_section
, rel
->r_offset
, sym_name
);
8344 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
8346 Elf_Internal_Rela rela
;
8349 rela
.r_offset
= (htab
->iplt
->output_section
->vma
8350 + htab
->iplt
->output_offset
8352 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8353 rela
.r_addend
= relocation
;
8354 loc
= htab
->reliplt
->contents
;
8355 loc
+= (htab
->reliplt
->reloc_count
++
8356 * sizeof (Elf32_External_Rela
));
8357 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8359 ent
->plt
.offset
|= 1;
8361 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
8363 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
8364 + ent
->glink_offset
);
8365 write_glink_stub (ent
, htab
->iplt
, p
, info
);
8366 ent
->glink_offset
|= 1;
8369 unresolved_reloc
= FALSE
;
8370 if (htab
->plt_type
== PLT_NEW
8371 || !htab
->elf
.dynamic_sections_created
8373 || h
->dynindx
== -1)
8374 relocation
= (htab
->glink
->output_section
->vma
8375 + htab
->glink
->output_offset
8376 + (ent
->glink_offset
& ~1));
8378 relocation
= (htab
->plt
->output_section
->vma
8379 + htab
->plt
->output_offset
8384 addend
= rel
->r_addend
;
8387 if (r_type
< R_PPC_max
)
8388 howto
= ppc_elf_howto_table
[r_type
];
8392 info
->callbacks
->einfo
8393 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8394 input_bfd
, (int) r_type
, sym_name
);
8396 bfd_set_error (bfd_error_bad_value
);
8404 case R_PPC_EMB_MRKREF
:
8405 case R_PPC_GNU_VTINHERIT
:
8406 case R_PPC_GNU_VTENTRY
:
8409 /* GOT16 relocations. Like an ADDR16 using the symbol's
8410 address in the GOT as relocation value instead of the
8411 symbol's value itself. Also, create a GOT entry for the
8412 symbol and put the symbol value there. */
8413 case R_PPC_GOT_TLSGD16
:
8414 case R_PPC_GOT_TLSGD16_LO
:
8415 case R_PPC_GOT_TLSGD16_HI
:
8416 case R_PPC_GOT_TLSGD16_HA
:
8417 tls_type
= TLS_TLS
| TLS_GD
;
8420 case R_PPC_GOT_TLSLD16
:
8421 case R_PPC_GOT_TLSLD16_LO
:
8422 case R_PPC_GOT_TLSLD16_HI
:
8423 case R_PPC_GOT_TLSLD16_HA
:
8424 tls_type
= TLS_TLS
| TLS_LD
;
8427 case R_PPC_GOT_TPREL16
:
8428 case R_PPC_GOT_TPREL16_LO
:
8429 case R_PPC_GOT_TPREL16_HI
:
8430 case R_PPC_GOT_TPREL16_HA
:
8431 tls_type
= TLS_TLS
| TLS_TPREL
;
8434 case R_PPC_GOT_DTPREL16
:
8435 case R_PPC_GOT_DTPREL16_LO
:
8436 case R_PPC_GOT_DTPREL16_HI
:
8437 case R_PPC_GOT_DTPREL16_HA
:
8438 tls_type
= TLS_TLS
| TLS_DTPREL
;
8442 case R_PPC_GOT16_LO
:
8443 case R_PPC_GOT16_HI
:
8444 case R_PPC_GOT16_HA
:
8448 /* Relocation is to the entry for this symbol in the global
8454 if (htab
->got
== NULL
)
8458 if (tls_type
== (TLS_TLS
| TLS_LD
)
8460 || !h
->def_dynamic
))
8461 offp
= &htab
->tlsld_got
.offset
;
8465 dyn
= htab
->elf
.dynamic_sections_created
;
8466 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
8467 || (bfd_link_pic (info
)
8468 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
8469 /* This is actually a static link, or it is a
8470 -Bsymbolic link and the symbol is defined
8471 locally, or the symbol was forced to be local
8472 because of a version file. */
8476 BFD_ASSERT (h
->dynindx
!= -1);
8478 unresolved_reloc
= FALSE
;
8480 offp
= &h
->got
.offset
;
8484 if (local_got_offsets
== NULL
)
8486 offp
= &local_got_offsets
[r_symndx
];
8489 /* The offset must always be a multiple of 4. We use the
8490 least significant bit to record whether we have already
8491 processed this entry. */
8497 unsigned int tls_m
= (tls_mask
8498 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8499 | TLS_TPREL
| TLS_TPRELGD
));
8501 if (offp
== &htab
->tlsld_got
.offset
)
8507 /* We might have multiple got entries for this sym.
8508 Initialize them all. */
8513 if ((tls_m
& TLS_LD
) != 0)
8515 tls_ty
= TLS_TLS
| TLS_LD
;
8518 else if ((tls_m
& TLS_GD
) != 0)
8520 tls_ty
= TLS_TLS
| TLS_GD
;
8523 else if ((tls_m
& TLS_DTPREL
) != 0)
8525 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8526 tls_m
&= ~TLS_DTPREL
;
8528 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8530 tls_ty
= TLS_TLS
| TLS_TPREL
;
8534 /* Generate relocs for the dynamic linker. */
8535 if ((bfd_link_pic (info
) || indx
!= 0)
8536 && (offp
== &htab
->tlsld_got
.offset
8538 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8539 || h
->root
.type
!= bfd_link_hash_undefweak
))
8541 asection
*rsec
= htab
->relgot
;
8545 rsec
= htab
->reliplt
;
8546 outrel
.r_offset
= (htab
->got
->output_section
->vma
8547 + htab
->got
->output_offset
8549 outrel
.r_addend
= 0;
8550 if (tls_ty
& (TLS_LD
| TLS_GD
))
8552 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8553 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8555 loc
= rsec
->contents
;
8556 loc
+= (rsec
->reloc_count
++
8557 * sizeof (Elf32_External_Rela
));
8558 bfd_elf32_swap_reloca_out (output_bfd
,
8560 outrel
.r_offset
+= 4;
8562 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8565 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8566 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8567 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8568 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8570 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8571 else if (ifunc
!= NULL
)
8572 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8574 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8575 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8577 outrel
.r_addend
+= relocation
;
8578 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8580 if (htab
->elf
.tls_sec
== NULL
)
8581 outrel
.r_addend
= 0;
8583 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8586 loc
= rsec
->contents
;
8587 loc
+= (rsec
->reloc_count
++
8588 * sizeof (Elf32_External_Rela
));
8589 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8592 /* Init the .got section contents if we're not
8593 emitting a reloc. */
8596 bfd_vma value
= relocation
;
8598 if (tls_ty
== (TLS_TLS
| TLS_LD
))
8600 else if (tls_ty
!= 0)
8602 if (htab
->elf
.tls_sec
== NULL
)
8606 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8607 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8608 value
+= DTP_OFFSET
- TP_OFFSET
;
8611 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8613 bfd_put_32 (output_bfd
, value
,
8614 htab
->got
->contents
+ off
+ 4);
8618 bfd_put_32 (output_bfd
, value
,
8619 htab
->got
->contents
+ off
);
8623 if (tls_ty
& (TLS_LD
| TLS_GD
))
8632 if (off
>= (bfd_vma
) -2)
8635 if ((tls_type
& TLS_TLS
) != 0)
8637 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8639 if ((tls_mask
& TLS_LD
) != 0
8641 || !h
->def_dynamic
))
8643 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8645 if ((tls_mask
& TLS_GD
) != 0)
8647 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8649 if ((tls_mask
& TLS_DTPREL
) != 0)
8656 /* If here for a picfixup, we're done. */
8657 if (r_type
!= ELF32_R_TYPE (rel
->r_info
))
8660 relocation
= (htab
->got
->output_section
->vma
8661 + htab
->got
->output_offset
8663 - SYM_VAL (htab
->elf
.hgot
));
8665 /* Addends on got relocations don't make much sense.
8666 x+off@got is actually x@got+off, and since the got is
8667 generated by a hash table traversal, the value in the
8668 got at entry m+n bears little relation to the entry m. */
8670 info
->callbacks
->einfo
8671 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8672 input_bfd
, input_section
, rel
->r_offset
,
8678 /* Relocations that need no special processing. */
8679 case R_PPC_LOCAL24PC
:
8680 /* It makes no sense to point a local relocation
8681 at a symbol not in this object. */
8682 if (unresolved_reloc
)
8684 (*info
->callbacks
->undefined_symbol
) (info
,
8685 h
->root
.root
.string
,
8692 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
&& bfd_link_pic (info
))
8694 /* @local on an ifunc does not really make sense since
8695 the ifunc resolver can take you anywhere. More
8696 seriously, calls to ifuncs must go through a plt call
8697 stub, and for pic the plt call stubs uses r30 to
8698 access the PLT. The problem is that a call that is
8699 local won't have the +32k reloc addend trick marking
8700 -fPIC code, so the linker won't know whether r30 is
8701 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8702 info
->callbacks
->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8703 input_bfd
, input_section
, rel
->r_offset
,
8704 h
->root
.root
.string
);
8708 case R_PPC_DTPREL16
:
8709 case R_PPC_DTPREL16_LO
:
8710 case R_PPC_DTPREL16_HI
:
8711 case R_PPC_DTPREL16_HA
:
8712 if (htab
->elf
.tls_sec
!= NULL
)
8713 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8716 /* Relocations that may need to be propagated if this is a shared
8719 case R_PPC_TPREL16_LO
:
8720 case R_PPC_TPREL16_HI
:
8721 case R_PPC_TPREL16_HA
:
8723 && h
->root
.type
== bfd_link_hash_undefweak
8724 && h
->dynindx
== -1)
8726 /* Make this relocation against an undefined weak symbol
8727 resolve to zero. This is really just a tweak, since
8728 code using weak externs ought to check that they are
8729 defined before using them. */
8730 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8731 unsigned int insn
= bfd_get_32 (output_bfd
, p
);
8732 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8734 bfd_put_32 (output_bfd
, insn
, p
);
8737 if (htab
->elf
.tls_sec
!= NULL
)
8738 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8739 /* The TPREL16 relocs shouldn't really be used in shared
8740 libs as they will result in DT_TEXTREL being set, but
8741 support them anyway. */
8745 if (htab
->elf
.tls_sec
!= NULL
)
8746 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8749 case R_PPC_DTPREL32
:
8750 if (htab
->elf
.tls_sec
!= NULL
)
8751 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8754 case R_PPC_DTPMOD32
:
8760 case R_PPC_REL16_LO
:
8761 case R_PPC_REL16_HI
:
8762 case R_PPC_REL16_HA
:
8763 case R_PPC_REL16DX_HA
:
8767 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8773 case R_PPC_ADDR16_LO
:
8774 case R_PPC_ADDR16_HI
:
8775 case R_PPC_ADDR16_HA
:
8780 case R_PPC_VLE_REL8
:
8781 case R_PPC_VLE_REL15
:
8782 case R_PPC_VLE_REL24
:
8785 case R_PPC_REL14_BRTAKEN
:
8786 case R_PPC_REL14_BRNTAKEN
:
8787 /* If these relocations are not to a named symbol, they can be
8788 handled right here, no need to bother the dynamic linker. */
8789 if (SYMBOL_CALLS_LOCAL (info
, h
)
8790 || h
== htab
->elf
.hgot
)
8796 case R_PPC_ADDR14_BRTAKEN
:
8797 case R_PPC_ADDR14_BRNTAKEN
:
8798 if (h
!= NULL
&& !bfd_link_pic (info
))
8803 if ((input_section
->flags
& SEC_ALLOC
) == 0
8807 if ((bfd_link_pic (info
)
8809 && ((h
->root
.type
== bfd_link_hash_undefined
8810 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
8811 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
8812 || (h
->root
.type
== bfd_link_hash_undefweak
8813 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)))
8814 && (must_be_dyn_reloc (info
, r_type
)
8815 || !SYMBOL_CALLS_LOCAL (info
, h
)))
8816 || (ELIMINATE_COPY_RELOCS
8817 && !bfd_link_pic (info
)
8822 && !(h
->protected_def
8823 && ppc_elf_hash_entry (h
)->has_addr16_ha
8824 && ppc_elf_hash_entry (h
)->has_addr16_lo
8825 && htab
->params
->pic_fixup
> 0)))
8831 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8832 "create relocation for %s\n",
8833 (h
&& h
->root
.root
.string
8834 ? h
->root
.root
.string
: "<unknown>"));
8837 /* When generating a shared object, these relocations
8838 are copied into the output file to be resolved at run
8840 sreloc
= elf_section_data (input_section
)->sreloc
;
8842 sreloc
= htab
->reliplt
;
8847 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8850 if (outrel
.r_offset
== (bfd_vma
) -1
8851 || outrel
.r_offset
== (bfd_vma
) -2)
8852 skip
= (int) outrel
.r_offset
;
8853 outrel
.r_offset
+= (input_section
->output_section
->vma
8854 + input_section
->output_offset
);
8857 memset (&outrel
, 0, sizeof outrel
);
8859 && (h
->root
.type
== bfd_link_hash_undefined
8860 || h
->root
.type
== bfd_link_hash_undefweak
))
8861 || !SYMBOL_REFERENCES_LOCAL (info
, h
))
8863 BFD_ASSERT (h
->dynindx
!= -1);
8864 unresolved_reloc
= FALSE
;
8865 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
8866 outrel
.r_addend
= rel
->r_addend
;
8870 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8872 if (r_type
!= R_PPC_ADDR32
)
8878 /* If we get here when building a static
8879 executable, then the libc startup function
8880 responsible for applying indirect function
8881 relocations is going to complain about
8883 If we get here when building a dynamic
8884 executable, it will be because we have
8885 a text relocation. The dynamic loader
8886 will set the text segment writable and
8887 non-executable to apply text relocations.
8888 So we'll segfault when trying to run the
8889 indirection function to resolve the reloc. */
8890 info
->callbacks
->einfo
8891 (_("%P: %H: relocation %s for indirect "
8892 "function %s unsupported\n"),
8893 input_bfd
, input_section
, rel
->r_offset
,
8898 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8900 else if (sec
== NULL
|| sec
->owner
== NULL
)
8902 bfd_set_error (bfd_error_bad_value
);
8909 /* We are turning this relocation into one
8910 against a section symbol. It would be
8911 proper to subtract the symbol's value,
8912 osec->vma, from the emitted reloc addend,
8913 but ld.so expects buggy relocs.
8914 FIXME: Why not always use a zero index? */
8915 osec
= sec
->output_section
;
8916 indx
= elf_section_data (osec
)->dynindx
;
8919 osec
= htab
->elf
.text_index_section
;
8920 indx
= elf_section_data (osec
)->dynindx
;
8922 BFD_ASSERT (indx
!= 0);
8925 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8926 indx
, osec
->name
, osec
->flags
,
8927 h
->root
.root
.string
);
8931 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8933 else if (ifunc
!= NULL
)
8934 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8936 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8939 loc
= sreloc
->contents
;
8940 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8941 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8946 /* This reloc will be computed at runtime. We clear the memory
8947 so that it contains predictable value. */
8949 && ((input_section
->flags
& SEC_ALLOC
) != 0
8950 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
8952 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
8959 case R_PPC_RELAX_PLT
:
8960 case R_PPC_RELAX_PLTREL24
:
8963 struct plt_entry
*ent
;
8964 bfd_vma got2_addend
= 0;
8966 if (r_type
== R_PPC_RELAX_PLTREL24
)
8968 if (bfd_link_pic (info
))
8969 got2_addend
= addend
;
8972 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
8973 if (htab
->plt_type
== PLT_NEW
)
8974 relocation
= (htab
->glink
->output_section
->vma
8975 + htab
->glink
->output_offset
8976 + ent
->glink_offset
);
8978 relocation
= (htab
->plt
->output_section
->vma
8979 + htab
->plt
->output_offset
8988 size_t insn_offset
= rel
->r_offset
;
8991 if (bfd_link_pic (info
))
8993 relocation
-= (input_section
->output_section
->vma
8994 + input_section
->output_offset
8995 + rel
->r_offset
- 4);
8996 stub
= shared_stub_entry
;
8997 bfd_put_32 (output_bfd
, stub
[0], contents
+ insn_offset
- 12);
8998 bfd_put_32 (output_bfd
, stub
[1], contents
+ insn_offset
- 8);
8999 bfd_put_32 (output_bfd
, stub
[2], contents
+ insn_offset
- 4);
9001 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
9006 size
= ARRAY_SIZE (stub_entry
);
9009 relocation
+= addend
;
9010 if (bfd_link_relocatable (info
))
9013 /* First insn is HA, second is LO. */
9015 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
9016 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
9020 insn
|= relocation
& 0xffff;
9021 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
9029 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
9033 /* Rewrite the reloc and convert one of the trailing nop
9034 relocs to describe this relocation. */
9035 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
9036 /* The relocs are at the bottom 2 bytes */
9037 wrel
->r_offset
= rel
->r_offset
+ d_offset
;
9038 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
9039 wrel
->r_addend
= rel
->r_addend
;
9040 memmove (wrel
+ 1, wrel
, (relend
- wrel
- 1) * sizeof (*wrel
));
9042 wrel
->r_offset
+= 4;
9043 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
9047 /* Indirect .sdata relocation. */
9048 case R_PPC_EMB_SDAI16
:
9049 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
9050 if (!is_static_defined (htab
->sdata
[0].sym
))
9052 unresolved_reloc
= TRUE
;
9056 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
9057 h
, relocation
, rel
);
9061 /* Indirect .sdata2 relocation. */
9062 case R_PPC_EMB_SDA2I16
:
9063 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
9064 if (!is_static_defined (htab
->sdata
[1].sym
))
9066 unresolved_reloc
= TRUE
;
9070 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
9071 h
, relocation
, rel
);
9075 /* Handle the TOC16 reloc. We want to use the offset within the .got
9076 section, not the actual VMA. This is appropriate when generating
9077 an embedded ELF object, for which the .got section acts like the
9078 AIX .toc section. */
9079 case R_PPC_TOC16
: /* phony GOT16 relocations */
9080 if (sec
== NULL
|| sec
->output_section
== NULL
)
9082 unresolved_reloc
= TRUE
;
9085 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
9087 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
9090 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
9093 case R_PPC_PLTREL24
:
9094 if (h
!= NULL
&& ifunc
== NULL
)
9096 struct plt_entry
*ent
;
9098 ent
= find_plt_ent (&h
->plt
.plist
, got2
,
9099 bfd_link_pic (info
) ? addend
: 0);
9101 || htab
->plt
== NULL
)
9103 /* We didn't make a PLT entry for this symbol. This
9104 happens when statically linking PIC code, or when
9105 using -Bsymbolic. */
9109 /* Relocation is to the entry for this symbol in the
9110 procedure linkage table. */
9111 unresolved_reloc
= FALSE
;
9112 if (htab
->plt_type
== PLT_NEW
)
9113 relocation
= (htab
->glink
->output_section
->vma
9114 + htab
->glink
->output_offset
9115 + ent
->glink_offset
);
9117 relocation
= (htab
->plt
->output_section
->vma
9118 + htab
->plt
->output_offset
9123 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9124 addend specifies the GOT pointer offset within .got2.
9125 Don't apply it to the relocation field. */
9129 /* Relocate against _SDA_BASE_. */
9130 case R_PPC_SDAREL16
:
9133 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
9136 || sec
->output_section
== NULL
9137 || !is_static_defined (sda
))
9139 unresolved_reloc
= TRUE
;
9142 addend
-= SYM_VAL (sda
);
9144 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9145 if (!(strcmp (name
, ".sdata") == 0
9146 || strcmp (name
, ".sbss") == 0))
9148 info
->callbacks
->einfo
9149 (_("%P: %B: the target (%s) of a %s relocation is "
9150 "in the wrong output section (%s)\n"),
9159 /* Relocate against _SDA2_BASE_. */
9160 case R_PPC_EMB_SDA2REL
:
9163 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
9166 || sec
->output_section
== NULL
9167 || !is_static_defined (sda
))
9169 unresolved_reloc
= TRUE
;
9172 addend
-= SYM_VAL (sda
);
9174 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9175 if (!(strcmp (name
, ".sdata2") == 0
9176 || strcmp (name
, ".sbss2") == 0))
9178 info
->callbacks
->einfo
9179 (_("%P: %B: the target (%s) of a %s relocation is "
9180 "in the wrong output section (%s)\n"),
9189 case R_PPC_VLE_LO16A
:
9190 relocation
= relocation
+ addend
;
9191 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9192 relocation
, split16a_type
);
9195 case R_PPC_VLE_LO16D
:
9196 relocation
= relocation
+ addend
;
9197 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9198 relocation
, split16d_type
);
9201 case R_PPC_VLE_HI16A
:
9202 relocation
= (relocation
+ addend
) >> 16;
9203 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9204 relocation
, split16a_type
);
9207 case R_PPC_VLE_HI16D
:
9208 relocation
= (relocation
+ addend
) >> 16;
9209 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9210 relocation
, split16d_type
);
9213 case R_PPC_VLE_HA16A
:
9214 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9215 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9216 relocation
, split16a_type
);
9219 case R_PPC_VLE_HA16D
:
9220 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9221 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9222 relocation
, split16d_type
);
9225 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9226 case R_PPC_EMB_SDA21
:
9227 case R_PPC_VLE_SDA21
:
9228 case R_PPC_EMB_RELSDA
:
9229 case R_PPC_VLE_SDA21_LO
:
9234 struct elf_link_hash_entry
*sda
= NULL
;
9236 if (sec
== NULL
|| sec
->output_section
== NULL
)
9238 unresolved_reloc
= TRUE
;
9242 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9243 if (strcmp (name
, ".sdata") == 0
9244 || strcmp (name
, ".sbss") == 0)
9247 sda
= htab
->sdata
[0].sym
;
9249 else if (strcmp (name
, ".sdata2") == 0
9250 || strcmp (name
, ".sbss2") == 0)
9253 sda
= htab
->sdata
[1].sym
;
9255 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
9256 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
9262 info
->callbacks
->einfo
9263 (_("%P: %B: the target (%s) of a %s relocation is "
9264 "in the wrong output section (%s)\n"),
9270 bfd_set_error (bfd_error_bad_value
);
9277 if (!is_static_defined (sda
))
9279 unresolved_reloc
= TRUE
;
9282 addend
-= SYM_VAL (sda
);
9285 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
9287 && (r_type
== R_PPC_VLE_SDA21
9288 || r_type
== R_PPC_VLE_SDA21_LO
))
9290 relocation
= relocation
+ addend
;
9293 /* Force e_li insn, keeping RT from original insn. */
9297 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9298 /* Top 4 bits of value to 17..20. */
9299 insn
|= (relocation
& 0xf0000) >> 5;
9300 /* Next 5 bits of the value to 11..15. */
9301 insn
|= (relocation
& 0xf800) << 5;
9302 /* And the final 11 bits of the value to bits 21 to 31. */
9303 insn
|= relocation
& 0x7ff;
9305 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9307 if (r_type
== R_PPC_VLE_SDA21
9308 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
9312 else if (r_type
== R_PPC_EMB_SDA21
9313 || r_type
== R_PPC_VLE_SDA21
9314 || r_type
== R_PPC_VLE_SDA21_LO
)
9316 /* Fill in register field. */
9317 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
9319 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9323 case R_PPC_VLE_SDAREL_LO16A
:
9324 case R_PPC_VLE_SDAREL_LO16D
:
9325 case R_PPC_VLE_SDAREL_HI16A
:
9326 case R_PPC_VLE_SDAREL_HI16D
:
9327 case R_PPC_VLE_SDAREL_HA16A
:
9328 case R_PPC_VLE_SDAREL_HA16D
:
9333 struct elf_link_hash_entry
*sda
= NULL
;
9335 if (sec
== NULL
|| sec
->output_section
== NULL
)
9337 unresolved_reloc
= TRUE
;
9341 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9342 if (strcmp (name
, ".sdata") == 0
9343 || strcmp (name
, ".sbss") == 0)
9346 sda
= htab
->sdata
[0].sym
;
9348 else if (strcmp (name
, ".sdata2") == 0
9349 || strcmp (name
, ".sbss2") == 0)
9352 sda
= htab
->sdata
[1].sym
;
9357 (_("%B: the target (%s) of a %s relocation is "
9358 "in the wrong output section (%s)"),
9364 bfd_set_error (bfd_error_bad_value
);
9371 if (!is_static_defined (sda
))
9373 unresolved_reloc
= TRUE
;
9378 value
= (sda
->root
.u
.def
.section
->output_section
->vma
9379 + sda
->root
.u
.def
.section
->output_offset
9382 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
9383 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9384 value
, split16a_type
);
9385 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
9386 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9387 value
, split16d_type
);
9388 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
9390 value
= value
>> 16;
9391 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9392 value
, split16a_type
);
9394 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
9396 value
= value
>> 16;
9397 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9398 value
, split16d_type
);
9400 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
9402 value
= (value
+ 0x8000) >> 16;
9403 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9404 value
, split16a_type
);
9406 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
9408 value
= (value
+ 0x8000) >> 16;
9409 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9410 value
, split16d_type
);
9415 /* Relocate against the beginning of the section. */
9417 case R_PPC_SECTOFF_LO
:
9418 case R_PPC_SECTOFF_HI
:
9419 case R_PPC_SECTOFF_HA
:
9420 if (sec
== NULL
|| sec
->output_section
== NULL
)
9422 unresolved_reloc
= TRUE
;
9425 addend
-= sec
->output_section
->vma
;
9428 /* Negative relocations. */
9429 case R_PPC_EMB_NADDR32
:
9430 case R_PPC_EMB_NADDR16
:
9431 case R_PPC_EMB_NADDR16_LO
:
9432 case R_PPC_EMB_NADDR16_HI
:
9433 case R_PPC_EMB_NADDR16_HA
:
9434 addend
-= 2 * relocation
;
9438 case R_PPC_GLOB_DAT
:
9439 case R_PPC_JMP_SLOT
:
9440 case R_PPC_RELATIVE
:
9441 case R_PPC_IRELATIVE
:
9443 case R_PPC_PLTREL32
:
9444 case R_PPC_PLT16_LO
:
9445 case R_PPC_PLT16_HI
:
9446 case R_PPC_PLT16_HA
:
9448 case R_PPC_EMB_RELSEC16
:
9449 case R_PPC_EMB_RELST_LO
:
9450 case R_PPC_EMB_RELST_HI
:
9451 case R_PPC_EMB_RELST_HA
:
9452 case R_PPC_EMB_BIT_FLD
:
9453 info
->callbacks
->einfo
9454 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9459 bfd_set_error (bfd_error_invalid_operation
);
9464 /* Do any further special processing. */
9470 case R_PPC_ADDR16_HA
:
9471 case R_PPC_REL16_HA
:
9472 case R_PPC_REL16DX_HA
:
9473 case R_PPC_SECTOFF_HA
:
9474 case R_PPC_TPREL16_HA
:
9475 case R_PPC_DTPREL16_HA
:
9476 case R_PPC_EMB_NADDR16_HA
:
9477 case R_PPC_EMB_RELST_HA
:
9478 /* It's just possible that this symbol is a weak symbol
9479 that's not actually defined anywhere. In that case,
9480 'sec' would be NULL, and we should leave the symbol
9481 alone (it will be set to zero elsewhere in the link). */
9486 case R_PPC_PLT16_HA
:
9487 case R_PPC_GOT16_HA
:
9488 case R_PPC_GOT_TLSGD16_HA
:
9489 case R_PPC_GOT_TLSLD16_HA
:
9490 case R_PPC_GOT_TPREL16_HA
:
9491 case R_PPC_GOT_DTPREL16_HA
:
9492 /* Add 0x10000 if sign bit in 0:15 is set.
9493 Bits 0:15 are not used. */
9498 case R_PPC_ADDR16_LO
:
9500 case R_PPC_GOT16_LO
:
9501 case R_PPC_SDAREL16
:
9503 case R_PPC_SECTOFF_LO
:
9504 case R_PPC_DTPREL16
:
9505 case R_PPC_DTPREL16_LO
:
9507 case R_PPC_TPREL16_LO
:
9508 case R_PPC_GOT_TLSGD16
:
9509 case R_PPC_GOT_TLSGD16_LO
:
9510 case R_PPC_GOT_TLSLD16
:
9511 case R_PPC_GOT_TLSLD16_LO
:
9512 case R_PPC_GOT_DTPREL16
:
9513 case R_PPC_GOT_DTPREL16_LO
:
9514 case R_PPC_GOT_TPREL16
:
9515 case R_PPC_GOT_TPREL16_LO
:
9517 /* The 32-bit ABI lacks proper relocations to deal with
9518 certain 64-bit instructions. Prevent damage to bits
9519 that make up part of the insn opcode. */
9520 unsigned int insn
, mask
, lobit
;
9522 insn
= bfd_get_32 (output_bfd
,
9523 contents
+ rel
->r_offset
- d_offset
);
9525 if (is_insn_ds_form (insn
))
9527 else if (is_insn_dq_form (insn
))
9531 relocation
+= addend
;
9532 addend
= insn
& mask
;
9533 lobit
= mask
& relocation
;
9536 relocation
^= lobit
;
9537 info
->callbacks
->einfo
9538 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9539 input_bfd
, input_section
, rel
->r_offset
,
9540 howto
->name
, sym_name
, mask
+ 1);
9541 bfd_set_error (bfd_error_bad_value
);
9549 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9550 "offset = %ld, addend = %ld\n",
9555 (long) rel
->r_offset
,
9559 if (unresolved_reloc
9560 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9562 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9563 rel
->r_offset
) != (bfd_vma
) -1)
9565 info
->callbacks
->einfo
9566 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9567 input_bfd
, input_section
, rel
->r_offset
,
9573 /* 16-bit fields in insns mostly have signed values, but a
9574 few insns have 16-bit unsigned values. Really, we should
9575 have different reloc types. */
9576 if (howto
->complain_on_overflow
!= complain_overflow_dont
9577 && howto
->dst_mask
== 0xffff
9578 && (input_section
->flags
& SEC_CODE
) != 0)
9580 enum complain_overflow complain
= complain_overflow_signed
;
9582 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9586 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9587 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9588 complain
= complain_overflow_bitfield
;
9589 else if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9590 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9591 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
9592 complain
= complain_overflow_unsigned
;
9594 if (howto
->complain_on_overflow
!= complain
)
9597 alt_howto
.complain_on_overflow
= complain
;
9602 if (r_type
== R_PPC_REL16DX_HA
)
9604 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9605 if (rel
->r_offset
+ 4 > input_section
->size
)
9606 r
= bfd_reloc_outofrange
;
9611 relocation
+= addend
;
9612 relocation
-= (rel
->r_offset
9613 + input_section
->output_offset
9614 + input_section
->output_section
->vma
);
9616 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9618 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
9619 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9624 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9625 rel
->r_offset
, relocation
, addend
);
9627 if (r
!= bfd_reloc_ok
)
9629 if (r
== bfd_reloc_overflow
)
9632 /* On code like "if (foo) foo();" don't report overflow
9633 on a branch to zero when foo is undefined. */
9636 && (h
->root
.type
== bfd_link_hash_undefweak
9637 || h
->root
.type
== bfd_link_hash_undefined
)
9638 && is_branch_reloc (r_type
)))
9639 info
->callbacks
->reloc_overflow
9640 (info
, (h
? &h
->root
: NULL
), sym_name
, howto
->name
,
9641 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
);
9645 info
->callbacks
->einfo
9646 (_("%P: %H: %s reloc against `%s': error %d\n"),
9647 input_bfd
, input_section
, rel
->r_offset
,
9648 howto
->name
, sym_name
, (int) r
);
9659 Elf_Internal_Shdr
*rel_hdr
;
9660 size_t deleted
= rel
- wrel
;
9662 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
9663 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9664 if (rel_hdr
->sh_size
== 0)
9666 /* It is too late to remove an empty reloc section. Leave
9668 ??? What is wrong with an empty section??? */
9669 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
9674 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
9675 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9676 input_section
->reloc_count
-= deleted
;
9680 fprintf (stderr
, "\n");
9683 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9684 && input_section
->size
!= input_section
->rawsize
9685 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9686 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9688 /* Branch around the trampolines. */
9689 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9690 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9693 if (htab
->params
->ppc476_workaround
9694 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9695 && (!bfd_link_relocatable (info
)
9696 || (input_section
->output_section
->alignment_power
9697 >= htab
->params
->pagesize_p2
)))
9699 bfd_vma start_addr
, end_addr
, addr
;
9700 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9702 if (relax_info
->workaround_size
!= 0)
9708 bfd_put_32 (input_bfd
, BA
, fill
);
9709 p
= contents
+ input_section
->size
- relax_info
->workaround_size
;
9710 n
= relax_info
->workaround_size
>> 2;
9713 memcpy (p
, fill
, 4);
9718 /* The idea is: Replace the last instruction on a page with a
9719 branch to a patch area. Put the insn there followed by a
9720 branch back to the next page. Complicated a little by
9721 needing to handle moved conditional branches, and by not
9722 wanting to touch data-in-text. */
9724 start_addr
= (input_section
->output_section
->vma
9725 + input_section
->output_offset
);
9726 end_addr
= (start_addr
+ input_section
->size
9727 - relax_info
->workaround_size
);
9728 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9732 bfd_vma offset
= addr
- start_addr
;
9733 Elf_Internal_Rela
*lo
, *hi
;
9734 bfd_boolean is_data
;
9735 bfd_vma patch_off
, patch_addr
;
9738 /* Do we have a data reloc at this offset? If so, leave
9746 rel
= lo
+ (hi
- lo
) / 2;
9747 if (rel
->r_offset
< offset
)
9749 else if (rel
->r_offset
> offset
+ 3)
9753 switch (ELF32_R_TYPE (rel
->r_info
))
9770 /* Some instructions can be left alone too. Unconditional
9771 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9772 avoid the icache failure.
9774 The problem occurs due to prefetch across a page boundary
9775 where stale instructions can be fetched from the next
9776 page, and the mechanism for flushing these bad
9777 instructions fails under certain circumstances. The
9778 unconditional branches:
9779 1) Branch: b, bl, ba, bla,
9780 2) Branch Conditional: bc, bca, bcl, bcla,
9781 3) Branch Conditional to Link Register: bclr, bclrl,
9782 where (2) and (3) have BO=0x14 making them unconditional,
9783 prevent the bad prefetch because the prefetch itself is
9784 affected by these instructions. This happens even if the
9785 instruction is not executed.
9790 . addi 9,9,new_page@l
9797 The bctr is not predicted taken due to ctr not being
9798 ready, so prefetch continues on past the bctr into the
9799 new page which might have stale instructions. If they
9800 fail to be flushed, then they will be executed after the
9801 bctr executes. Either of the following modifications
9802 prevent the bad prefetch from happening in the first
9805 . lis 9,new_page@ha lis 9,new_page@ha
9806 . addi 9,9,new_page@l addi 9,9,new_page@l
9809 . nop b somewhere_else
9810 . b somewhere_else nop
9811 . new_page: new_page:
9813 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9814 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9815 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9816 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9817 || ((insn
& (0x3f << 26)) == (19u << 26)
9818 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9819 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9822 patch_addr
= (start_addr
+ input_section
->size
9823 - relax_info
->workaround_size
);
9824 patch_addr
= (patch_addr
+ 15) & -16;
9825 patch_off
= patch_addr
- start_addr
;
9826 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9829 && rel
->r_offset
>= offset
9830 && rel
->r_offset
< offset
+ 4)
9834 /* If the insn we are patching had a reloc, adjust the
9835 reloc r_offset so that the reloc applies to the moved
9836 location. This matters for -r and --emit-relocs. */
9837 if (rel
+ 1 != relend
)
9839 Elf_Internal_Rela tmp
= *rel
;
9841 /* Keep the relocs sorted by r_offset. */
9842 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9845 relend
[-1].r_offset
+= patch_off
- offset
;
9847 /* Adjust REL16 addends too. */
9848 switch (ELF32_R_TYPE (relend
[-1].r_info
))
9851 case R_PPC_REL16_LO
:
9852 case R_PPC_REL16_HI
:
9853 case R_PPC_REL16_HA
:
9854 relend
[-1].r_addend
+= patch_off
- offset
;
9860 /* If we are building a PIE or shared library with
9861 non-PIC objects, perhaps we had a dynamic reloc too?
9862 If so, the dynamic reloc must move with the insn. */
9863 sreloc
= elf_section_data (input_section
)->sreloc
;
9866 Elf32_External_Rela
*slo
, *shi
, *srelend
;
9869 slo
= (Elf32_External_Rela
*) sreloc
->contents
;
9870 shi
= srelend
= slo
+ sreloc
->reloc_count
;
9871 soffset
= (offset
+ input_section
->output_section
->vma
9872 + input_section
->output_offset
);
9875 Elf32_External_Rela
*srel
= slo
+ (shi
- slo
) / 2;
9876 bfd_elf32_swap_reloca_in (output_bfd
, (bfd_byte
*) srel
,
9878 if (outrel
.r_offset
< soffset
)
9880 else if (outrel
.r_offset
> soffset
+ 3)
9884 if (srel
+ 1 != srelend
)
9886 memmove (srel
, srel
+ 1,
9887 (srelend
- (srel
+ 1)) * sizeof (*srel
));
9890 outrel
.r_offset
+= patch_off
- offset
;
9891 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
9901 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9902 && (insn
& 2) == 0 /* relative */)
9904 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
9906 delta
+= offset
- patch_off
;
9907 if (bfd_link_relocatable (info
) && rel
!= NULL
)
9909 if (!bfd_link_relocatable (info
) && rel
!= NULL
)
9911 enum elf_ppc_reloc_type r_type
;
9913 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
9914 if (r_type
== R_PPC_REL14_BRTAKEN
)
9915 insn
|= BRANCH_PREDICT_BIT
;
9916 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
9917 insn
&= ~BRANCH_PREDICT_BIT
;
9919 BFD_ASSERT (r_type
== R_PPC_REL14
);
9921 if ((r_type
== R_PPC_REL14_BRTAKEN
9922 || r_type
== R_PPC_REL14_BRNTAKEN
)
9923 && delta
+ 0x8000 < 0x10000
9924 && (bfd_signed_vma
) delta
< 0)
9925 insn
^= BRANCH_PREDICT_BIT
;
9927 if (delta
+ 0x8000 < 0x10000)
9929 bfd_put_32 (input_bfd
,
9930 (insn
& ~0xfffc) | (delta
& 0xfffc),
9931 contents
+ patch_off
);
9933 bfd_put_32 (input_bfd
,
9934 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9935 contents
+ patch_off
);
9942 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
9944 relend
[-1].r_offset
+= 8;
9945 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
9947 bfd_put_32 (input_bfd
,
9948 (insn
& ~0xfffc) | 8,
9949 contents
+ patch_off
);
9951 bfd_put_32 (input_bfd
,
9952 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9953 contents
+ patch_off
);
9955 bfd_put_32 (input_bfd
,
9956 B
| ((delta
- 8) & 0x3fffffc),
9957 contents
+ patch_off
);
9963 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
9965 bfd_put_32 (input_bfd
,
9966 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9967 contents
+ patch_off
);
9970 BFD_ASSERT (patch_off
<= input_section
->size
);
9971 relax_info
->workaround_size
= input_section
->size
- patch_off
;
9978 /* Finish up dynamic symbol handling. We set the contents of various
9979 dynamic sections here. */
9982 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9983 struct bfd_link_info
*info
,
9984 struct elf_link_hash_entry
*h
,
9985 Elf_Internal_Sym
*sym
)
9987 struct ppc_elf_link_hash_table
*htab
;
9988 struct plt_entry
*ent
;
9989 bfd_boolean doneone
;
9992 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
9993 h
->root
.root
.string
);
9996 htab
= ppc_elf_hash_table (info
);
9997 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
10000 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10001 if (ent
->plt
.offset
!= (bfd_vma
) -1)
10005 Elf_Internal_Rela rela
;
10007 bfd_vma reloc_index
;
10009 if (htab
->plt_type
== PLT_NEW
10010 || !htab
->elf
.dynamic_sections_created
10011 || h
->dynindx
== -1)
10012 reloc_index
= ent
->plt
.offset
/ 4;
10015 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
10016 / htab
->plt_slot_size
);
10017 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
10018 && htab
->plt_type
== PLT_OLD
)
10019 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
10022 /* This symbol has an entry in the procedure linkage table.
10024 if (htab
->plt_type
== PLT_VXWORKS
10025 && htab
->elf
.dynamic_sections_created
10026 && h
->dynindx
!= -1)
10028 bfd_vma got_offset
;
10029 const bfd_vma
*plt_entry
;
10031 /* The first three entries in .got.plt are reserved. */
10032 got_offset
= (reloc_index
+ 3) * 4;
10034 /* Use the right PLT. */
10035 plt_entry
= bfd_link_pic (info
) ? ppc_elf_vxworks_pic_plt_entry
10036 : ppc_elf_vxworks_plt_entry
;
10038 /* Fill in the .plt on VxWorks. */
10039 if (bfd_link_pic (info
))
10041 bfd_put_32 (output_bfd
,
10042 plt_entry
[0] | PPC_HA (got_offset
),
10043 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
10044 bfd_put_32 (output_bfd
,
10045 plt_entry
[1] | PPC_LO (got_offset
),
10046 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
10050 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
10052 bfd_put_32 (output_bfd
,
10053 plt_entry
[0] | PPC_HA (got_loc
),
10054 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
10055 bfd_put_32 (output_bfd
,
10056 plt_entry
[1] | PPC_LO (got_loc
),
10057 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
10060 bfd_put_32 (output_bfd
, plt_entry
[2],
10061 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
10062 bfd_put_32 (output_bfd
, plt_entry
[3],
10063 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
10065 /* This instruction is an immediate load. The value loaded is
10066 the byte offset of the R_PPC_JMP_SLOT relocation from the
10067 start of the .rela.plt section. The value is stored in the
10068 low-order 16 bits of the load instruction. */
10069 /* NOTE: It appears that this is now an index rather than a
10070 prescaled offset. */
10071 bfd_put_32 (output_bfd
,
10072 plt_entry
[4] | reloc_index
,
10073 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
10074 /* This instruction is a PC-relative branch whose target is
10075 the start of the PLT section. The address of this branch
10076 instruction is 20 bytes beyond the start of this PLT entry.
10077 The address is encoded in bits 6-29, inclusive. The value
10078 stored is right-shifted by two bits, permitting a 26-bit
10080 bfd_put_32 (output_bfd
,
10082 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
10083 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
10084 bfd_put_32 (output_bfd
, plt_entry
[6],
10085 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
10086 bfd_put_32 (output_bfd
, plt_entry
[7],
10087 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
10089 /* Fill in the GOT entry corresponding to this PLT slot with
10090 the address immediately after the "bctr" instruction
10091 in this PLT entry. */
10092 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
10093 + htab
->plt
->output_offset
10094 + ent
->plt
.offset
+ 16),
10095 htab
->sgotplt
->contents
+ got_offset
);
10097 if (!bfd_link_pic (info
))
10099 /* Fill in a couple of entries in .rela.plt.unloaded. */
10100 loc
= htab
->srelplt2
->contents
10101 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
10102 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
10103 * sizeof (Elf32_External_Rela
));
10105 /* Provide the @ha relocation for the first instruction. */
10106 rela
.r_offset
= (htab
->plt
->output_section
->vma
10107 + htab
->plt
->output_offset
10108 + ent
->plt
.offset
+ 2);
10109 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10111 rela
.r_addend
= got_offset
;
10112 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10113 loc
+= sizeof (Elf32_External_Rela
);
10115 /* Provide the @l relocation for the second instruction. */
10116 rela
.r_offset
= (htab
->plt
->output_section
->vma
10117 + htab
->plt
->output_offset
10118 + ent
->plt
.offset
+ 6);
10119 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10121 rela
.r_addend
= got_offset
;
10122 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10123 loc
+= sizeof (Elf32_External_Rela
);
10125 /* Provide a relocation for the GOT entry corresponding to this
10126 PLT slot. Point it at the middle of the .plt entry. */
10127 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
10128 + htab
->sgotplt
->output_offset
10130 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
10132 rela
.r_addend
= ent
->plt
.offset
+ 16;
10133 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10136 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10137 In particular, the offset for the relocation is not the
10138 address of the PLT entry for this function, as specified
10139 by the ABI. Instead, the offset is set to the address of
10140 the GOT slot for this function. See EABI 4.4.4.1. */
10141 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
10142 + htab
->sgotplt
->output_offset
10148 asection
*splt
= htab
->plt
;
10149 if (!htab
->elf
.dynamic_sections_created
10150 || h
->dynindx
== -1)
10153 rela
.r_offset
= (splt
->output_section
->vma
10154 + splt
->output_offset
10155 + ent
->plt
.offset
);
10156 if (htab
->plt_type
== PLT_OLD
10157 || !htab
->elf
.dynamic_sections_created
10158 || h
->dynindx
== -1)
10160 /* We don't need to fill in the .plt. The ppc dynamic
10161 linker will fill it in. */
10165 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
10166 + htab
->glink
->output_section
->vma
10167 + htab
->glink
->output_offset
);
10168 bfd_put_32 (output_bfd
, val
,
10169 splt
->contents
+ ent
->plt
.offset
);
10173 /* Fill in the entry in the .rela.plt section. */
10175 if (!htab
->elf
.dynamic_sections_created
10176 || h
->dynindx
== -1)
10178 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
10180 && (h
->root
.type
== bfd_link_hash_defined
10181 || h
->root
.type
== bfd_link_hash_defweak
));
10182 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
10183 rela
.r_addend
= SYM_VAL (h
);
10186 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
10188 if (!htab
->elf
.dynamic_sections_created
10189 || h
->dynindx
== -1)
10190 loc
= (htab
->reliplt
->contents
10191 + (htab
->reliplt
->reloc_count
++
10192 * sizeof (Elf32_External_Rela
)));
10194 loc
= (htab
->relplt
->contents
10195 + reloc_index
* sizeof (Elf32_External_Rela
));
10196 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10198 if (!h
->def_regular
)
10200 /* Mark the symbol as undefined, rather than as
10201 defined in the .plt section. Leave the value if
10202 there were any relocations where pointer equality
10203 matters (this is a clue for the dynamic linker, to
10204 make function pointer comparisons work between an
10205 application and shared library), otherwise set it
10207 sym
->st_shndx
= SHN_UNDEF
;
10208 if (!h
->pointer_equality_needed
)
10210 else if (!h
->ref_regular_nonweak
)
10212 /* This breaks function pointer comparisons, but
10213 that is better than breaking tests for a NULL
10214 function pointer. */
10218 else if (h
->type
== STT_GNU_IFUNC
10219 && !bfd_link_pic (info
))
10221 /* Set the value of ifunc symbols in a non-pie
10222 executable to the glink entry. This is to avoid
10223 text relocations. We can't do this for ifunc in
10224 allocate_dynrelocs, as we do for normal dynamic
10225 function symbols with plt entries, because we need
10226 to keep the original value around for the ifunc
10228 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
10229 (output_bfd
, htab
->glink
->output_section
));
10230 sym
->st_value
= (ent
->glink_offset
10231 + htab
->glink
->output_offset
10232 + htab
->glink
->output_section
->vma
);
10237 if (htab
->plt_type
== PLT_NEW
10238 || !htab
->elf
.dynamic_sections_created
10239 || h
->dynindx
== -1)
10242 asection
*splt
= htab
->plt
;
10243 if (!htab
->elf
.dynamic_sections_created
10244 || h
->dynindx
== -1)
10247 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
10249 if (h
== htab
->tls_get_addr
&& !htab
->params
->no_tls_get_addr_opt
)
10251 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
10253 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
10255 bfd_put_32 (output_bfd
, MR_0_3
, p
);
10257 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
10259 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
10261 bfd_put_32 (output_bfd
, BEQLR
, p
);
10263 bfd_put_32 (output_bfd
, MR_3_0
, p
);
10265 bfd_put_32 (output_bfd
, NOP
, p
);
10269 write_glink_stub (ent
, splt
, p
, info
);
10271 if (!bfd_link_pic (info
))
10272 /* We only need one non-PIC glink stub. */
10282 Elf_Internal_Rela rela
;
10285 /* This symbols needs a copy reloc. Set it up. */
10288 fprintf (stderr
, ", copy");
10291 BFD_ASSERT (h
->dynindx
!= -1);
10293 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
10297 BFD_ASSERT (s
!= NULL
);
10299 rela
.r_offset
= SYM_VAL (h
);
10300 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
10302 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
10303 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10307 fprintf (stderr
, "\n");
10313 static enum elf_reloc_type_class
10314 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
10315 const asection
*rel_sec
,
10316 const Elf_Internal_Rela
*rela
)
10318 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
10320 if (rel_sec
== htab
->reliplt
)
10321 return reloc_class_ifunc
;
10323 switch (ELF32_R_TYPE (rela
->r_info
))
10325 case R_PPC_RELATIVE
:
10326 return reloc_class_relative
;
10327 case R_PPC_JMP_SLOT
:
10328 return reloc_class_plt
;
10330 return reloc_class_copy
;
10332 return reloc_class_normal
;
10336 /* Finish up the dynamic sections. */
10339 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
10340 struct bfd_link_info
*info
)
10344 struct ppc_elf_link_hash_table
*htab
;
10347 bfd_boolean ret
= TRUE
;
10350 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
10353 htab
= ppc_elf_hash_table (info
);
10354 dynobj
= elf_hash_table (info
)->dynobj
;
10355 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
10356 if (htab
->is_vxworks
)
10357 splt
= bfd_get_linker_section (dynobj
, ".plt");
10362 if (htab
->elf
.hgot
!= NULL
)
10363 got
= SYM_VAL (htab
->elf
.hgot
);
10365 if (htab
->elf
.dynamic_sections_created
)
10367 Elf32_External_Dyn
*dyncon
, *dynconend
;
10369 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
10371 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
10372 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10373 for (; dyncon
< dynconend
; dyncon
++)
10375 Elf_Internal_Dyn dyn
;
10378 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10383 if (htab
->is_vxworks
)
10387 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10391 dyn
.d_un
.d_val
= htab
->relplt
->size
;
10396 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10400 dyn
.d_un
.d_ptr
= got
;
10404 if (htab
->is_vxworks
)
10407 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
10413 if (htab
->is_vxworks
10414 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
10419 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10423 if (htab
->got
!= NULL
)
10425 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->got
10426 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->sgotplt
)
10428 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
10430 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
10431 if (htab
->plt_type
== PLT_OLD
)
10433 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10434 so that a function can easily find the address of
10435 _GLOBAL_OFFSET_TABLE_. */
10436 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
10437 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10438 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
10443 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
10444 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
10445 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10446 bfd_put_32 (output_bfd
, val
, p
);
10451 info
->callbacks
->einfo (_("%P: %s not defined in linker created %s\n"),
10452 htab
->elf
.hgot
->root
.root
.string
,
10453 (htab
->sgotplt
!= NULL
10454 ? htab
->sgotplt
->name
: htab
->got
->name
));
10455 bfd_set_error (bfd_error_bad_value
);
10459 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
10462 /* Fill in the first entry in the VxWorks procedure linkage table. */
10463 if (splt
&& splt
->size
> 0)
10465 /* Use the right PLT. */
10466 const bfd_vma
*plt_entry
= (bfd_link_pic (info
)
10467 ? ppc_elf_vxworks_pic_plt0_entry
10468 : ppc_elf_vxworks_plt0_entry
);
10470 if (!bfd_link_pic (info
))
10472 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
10474 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
10475 splt
->contents
+ 0);
10476 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
10477 splt
->contents
+ 4);
10481 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
10482 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
10484 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
10485 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
10486 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
10487 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
10488 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
10489 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
10491 if (! bfd_link_pic (info
))
10493 Elf_Internal_Rela rela
;
10496 loc
= htab
->srelplt2
->contents
;
10498 /* Output the @ha relocation for the first instruction. */
10499 rela
.r_offset
= (htab
->plt
->output_section
->vma
10500 + htab
->plt
->output_offset
10502 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10504 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10505 loc
+= sizeof (Elf32_External_Rela
);
10507 /* Output the @l relocation for the second instruction. */
10508 rela
.r_offset
= (htab
->plt
->output_section
->vma
10509 + htab
->plt
->output_offset
10511 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10513 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10514 loc
+= sizeof (Elf32_External_Rela
);
10516 /* Fix up the remaining relocations. They may have the wrong
10517 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10518 in which symbols were output. */
10519 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
10521 Elf_Internal_Rela rel
;
10523 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10524 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10525 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10526 loc
+= sizeof (Elf32_External_Rela
);
10528 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10529 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10530 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10531 loc
+= sizeof (Elf32_External_Rela
);
10533 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10534 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
10535 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10536 loc
+= sizeof (Elf32_External_Rela
);
10541 if (htab
->glink
!= NULL
10542 && htab
->glink
->contents
!= NULL
10543 && htab
->elf
.dynamic_sections_created
)
10546 unsigned char *endp
;
10551 * PIC glink code is the following:
10553 * # ith PLT code stub.
10554 * addis 11,30,(plt+(i-1)*4-got)@ha
10555 * lwz 11,(plt+(i-1)*4-got)@l(11)
10559 * # A table of branches, one for each plt entry.
10560 * # The idea is that the plt call stub loads ctr and r11 with these
10561 * # addresses, so (r11 - res_0) gives the plt index * 4.
10562 * res_0: b PLTresolve
10563 * res_1: b PLTresolve
10565 * # Some number of entries towards the end can be nops
10571 * addis 11,11,(1f-res_0)@ha
10574 * 1: addi 11,11,(1b-res_0)@l
10577 * sub 11,11,12 # r11 = index * 4
10578 * addis 12,12,(got+4-1b)@ha
10579 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10580 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10583 * add 11,0,11 # r11 = index * 12 = reloc offset.
10586 static const unsigned int pic_plt_resolve
[] =
10607 * Non-PIC glink code is a little simpler.
10609 * # ith PLT code stub.
10610 * lis 11,(plt+(i-1)*4)@ha
10611 * lwz 11,(plt+(i-1)*4)@l(11)
10615 * The branch table is the same, then comes
10618 * lis 12,(got+4)@ha
10619 * addis 11,11,(-res_0)@ha
10620 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10621 * addi 11,11,(-res_0)@l # r11 = index * 4
10624 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10625 * add 11,0,11 # r11 = index * 12 = reloc offset.
10628 static const unsigned int plt_resolve
[] =
10648 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10650 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10653 /* Build the branch table, one for each plt entry (less one),
10654 and perhaps some padding. */
10655 p
= htab
->glink
->contents
;
10656 p
+= htab
->glink_pltresolve
;
10657 endp
= htab
->glink
->contents
;
10658 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10659 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10661 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10666 bfd_put_32 (output_bfd
, NOP
, p
);
10670 res0
= (htab
->glink_pltresolve
10671 + htab
->glink
->output_section
->vma
10672 + htab
->glink
->output_offset
);
10674 if (htab
->params
->ppc476_workaround
)
10676 /* Ensure that a call stub at the end of a page doesn't
10677 result in prefetch over the end of the page into the
10678 glink branch table. */
10679 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10681 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10682 + htab
->glink
->output_offset
);
10684 for (page_addr
= res0
& -pagesize
;
10685 page_addr
> glink_start
;
10686 page_addr
-= pagesize
)
10688 /* We have a plt call stub that may need fixing. */
10692 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10693 insn
= bfd_get_32 (output_bfd
, loc
);
10696 /* By alignment, we know that there must be at least
10697 one other call stub before this one. */
10698 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10700 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10702 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10707 /* Last comes the PLTresolve stub. */
10708 if (bfd_link_pic (info
))
10712 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
10714 unsigned int insn
= pic_plt_resolve
[i
];
10716 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10718 bfd_put_32 (output_bfd
, insn
, p
);
10721 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
10723 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10724 + htab
->glink
->output_section
->vma
10725 + htab
->glink
->output_offset
);
10727 bfd_put_32 (output_bfd
,
10728 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
10729 bfd_put_32 (output_bfd
,
10730 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
10731 bfd_put_32 (output_bfd
,
10732 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
10733 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10735 bfd_put_32 (output_bfd
,
10736 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10737 bfd_put_32 (output_bfd
,
10738 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
10742 bfd_put_32 (output_bfd
,
10743 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10744 bfd_put_32 (output_bfd
,
10745 LWZ_12_12
+ 4, p
+ 9*4);
10750 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
10752 unsigned int insn
= plt_resolve
[i
];
10754 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10756 bfd_put_32 (output_bfd
, insn
, p
);
10759 p
-= 4 * ARRAY_SIZE (plt_resolve
);
10761 bfd_put_32 (output_bfd
,
10762 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
10763 bfd_put_32 (output_bfd
,
10764 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
10765 bfd_put_32 (output_bfd
,
10766 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
10767 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10769 bfd_put_32 (output_bfd
,
10770 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10771 bfd_put_32 (output_bfd
,
10772 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
10776 bfd_put_32 (output_bfd
,
10777 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10778 bfd_put_32 (output_bfd
,
10779 LWZ_12_12
+ 4, p
+ 6*4);
10784 if (htab
->glink_eh_frame
!= NULL
10785 && htab
->glink_eh_frame
->contents
!= NULL
)
10787 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10790 p
+= sizeof (glink_eh_frame_cie
);
10795 /* Offset to .glink. */
10796 val
= (htab
->glink
->output_section
->vma
10797 + htab
->glink
->output_offset
);
10798 val
-= (htab
->glink_eh_frame
->output_section
->vma
10799 + htab
->glink_eh_frame
->output_offset
);
10800 val
-= p
- htab
->glink_eh_frame
->contents
;
10801 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10803 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10804 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10805 htab
->glink_eh_frame
,
10806 htab
->glink_eh_frame
->contents
))
10813 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10814 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10815 #define TARGET_BIG_SYM powerpc_elf32_vec
10816 #define TARGET_BIG_NAME "elf32-powerpc"
10817 #define ELF_ARCH bfd_arch_powerpc
10818 #define ELF_TARGET_ID PPC32_ELF_DATA
10819 #define ELF_MACHINE_CODE EM_PPC
10820 #ifdef __QNXTARGET__
10821 #define ELF_MAXPAGESIZE 0x1000
10822 #define ELF_COMMONPAGESIZE 0x1000
10824 #define ELF_MAXPAGESIZE 0x10000
10825 #define ELF_COMMONPAGESIZE 0x10000
10827 #define ELF_MINPAGESIZE 0x1000
10828 #define elf_info_to_howto ppc_elf_info_to_howto
10830 #ifdef EM_CYGNUS_POWERPC
10831 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10835 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10838 #define elf_backend_plt_not_loaded 1
10839 #define elf_backend_can_gc_sections 1
10840 #define elf_backend_can_refcount 1
10841 #define elf_backend_rela_normal 1
10842 #define elf_backend_caches_rawsize 1
10844 #define bfd_elf32_mkobject ppc_elf_mkobject
10845 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10846 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10847 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10848 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10849 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10850 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10851 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10853 #define elf_backend_object_p ppc_elf_object_p
10854 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10855 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10856 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10857 #define elf_backend_relocate_section ppc_elf_relocate_section
10858 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10859 #define elf_backend_check_relocs ppc_elf_check_relocs
10860 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10861 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10862 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10863 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10864 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10865 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10866 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10867 #define elf_backend_fake_sections ppc_elf_fake_sections
10868 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10869 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10870 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10871 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10872 #define elf_backend_write_core_note ppc_elf_write_core_note
10873 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10874 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10875 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10876 #define elf_backend_write_section ppc_elf_write_section
10877 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10878 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10879 #define elf_backend_action_discarded ppc_elf_action_discarded
10880 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10881 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10883 #include "elf32-target.h"
10885 /* FreeBSD Target */
10887 #undef TARGET_LITTLE_SYM
10888 #undef TARGET_LITTLE_NAME
10890 #undef TARGET_BIG_SYM
10891 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10892 #undef TARGET_BIG_NAME
10893 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10896 #define ELF_OSABI ELFOSABI_FREEBSD
10899 #define elf32_bed elf32_powerpc_fbsd_bed
10901 #include "elf32-target.h"
10903 /* VxWorks Target */
10905 #undef TARGET_LITTLE_SYM
10906 #undef TARGET_LITTLE_NAME
10908 #undef TARGET_BIG_SYM
10909 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10910 #undef TARGET_BIG_NAME
10911 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10915 /* VxWorks uses the elf default section flags for .plt. */
10916 static const struct bfd_elf_special_section
*
10917 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
10919 if (sec
->name
== NULL
)
10922 if (strcmp (sec
->name
, ".plt") == 0)
10923 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
10925 return ppc_elf_get_sec_type_attr (abfd
, sec
);
10928 /* Like ppc_elf_link_hash_table_create, but overrides
10929 appropriately for VxWorks. */
10930 static struct bfd_link_hash_table
*
10931 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
10933 struct bfd_link_hash_table
*ret
;
10935 ret
= ppc_elf_link_hash_table_create (abfd
);
10938 struct ppc_elf_link_hash_table
*htab
10939 = (struct ppc_elf_link_hash_table
*)ret
;
10940 htab
->is_vxworks
= 1;
10941 htab
->plt_type
= PLT_VXWORKS
;
10942 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
10943 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
10944 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
10949 /* Tweak magic VxWorks symbols as they are loaded. */
10951 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
10952 struct bfd_link_info
*info
,
10953 Elf_Internal_Sym
*sym
,
10954 const char **namep ATTRIBUTE_UNUSED
,
10955 flagword
*flagsp ATTRIBUTE_UNUSED
,
10959 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
10963 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
10967 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10969 ppc_elf_final_write_processing(abfd
, linker
);
10970 elf_vxworks_final_write_processing(abfd
, linker
);
10973 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10975 #undef elf_backend_want_plt_sym
10976 #define elf_backend_want_plt_sym 1
10977 #undef elf_backend_want_got_plt
10978 #define elf_backend_want_got_plt 1
10979 #undef elf_backend_got_symbol_offset
10980 #define elf_backend_got_symbol_offset 0
10981 #undef elf_backend_plt_not_loaded
10982 #define elf_backend_plt_not_loaded 0
10983 #undef elf_backend_plt_readonly
10984 #define elf_backend_plt_readonly 1
10985 #undef elf_backend_got_header_size
10986 #define elf_backend_got_header_size 12
10988 #undef bfd_elf32_get_synthetic_symtab
10990 #undef bfd_elf32_bfd_link_hash_table_create
10991 #define bfd_elf32_bfd_link_hash_table_create \
10992 ppc_elf_vxworks_link_hash_table_create
10993 #undef elf_backend_add_symbol_hook
10994 #define elf_backend_add_symbol_hook \
10995 ppc_elf_vxworks_add_symbol_hook
10996 #undef elf_backend_link_output_symbol_hook
10997 #define elf_backend_link_output_symbol_hook \
10998 elf_vxworks_link_output_symbol_hook
10999 #undef elf_backend_final_write_processing
11000 #define elf_backend_final_write_processing \
11001 ppc_elf_vxworks_final_write_processing
11002 #undef elf_backend_get_sec_type_attr
11003 #define elf_backend_get_sec_type_attr \
11004 ppc_elf_vxworks_get_sec_type_attr
11005 #undef elf_backend_emit_relocs
11006 #define elf_backend_emit_relocs \
11007 elf_vxworks_emit_relocs
11010 #define elf32_bed ppc_elf_vxworks_bed
11011 #undef elf_backend_post_process_headers
11013 #include "elf32-target.h"