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 0xfe, /* 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
;
2250 case PPC_APUINFO_VLE
:
2251 mach
= bfd_mach_ppc_vle
;
2262 if (mach
!= 0 && mach
!= -1ul)
2264 const bfd_arch_info_type
*arch
;
2266 for (arch
= abfd
->arch_info
->next
; arch
; arch
= arch
->next
)
2267 if (arch
->mach
== mach
)
2269 abfd
->arch_info
= arch
;
2276 /* Fix bad default arch selected for a 32 bit input bfd when the
2277 default is 64 bit. Also select arch based on apuinfo. */
2280 ppc_elf_object_p (bfd
*abfd
)
2282 if (!abfd
->arch_info
->the_default
)
2285 if (abfd
->arch_info
->bits_per_word
== 64)
2287 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2289 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
2291 /* Relies on arch after 64 bit default being 32 bit default. */
2292 abfd
->arch_info
= abfd
->arch_info
->next
;
2293 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
2296 return _bfd_elf_ppc_set_arch (abfd
);
2299 /* Function to set whether a module needs the -mrelocatable bit set. */
2302 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2304 BFD_ASSERT (!elf_flags_init (abfd
)
2305 || elf_elfheader (abfd
)->e_flags
== flags
);
2307 elf_elfheader (abfd
)->e_flags
= flags
;
2308 elf_flags_init (abfd
) = TRUE
;
2312 /* Support for core dump NOTE sections. */
2315 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2320 switch (note
->descsz
)
2325 case 268: /* Linux/PPC. */
2327 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2330 elf_tdata (abfd
)->core
->lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
2339 /* Make a ".reg/999" section. */
2340 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2341 size
, note
->descpos
+ offset
);
2345 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2347 switch (note
->descsz
)
2352 case 128: /* Linux/PPC elf_prpsinfo. */
2353 elf_tdata (abfd
)->core
->pid
2354 = bfd_get_32 (abfd
, note
->descdata
+ 16);
2355 elf_tdata (abfd
)->core
->program
2356 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
2357 elf_tdata (abfd
)->core
->command
2358 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
2361 /* Note that for some reason, a spurious space is tacked
2362 onto the end of the args in some (at least one anyway)
2363 implementations, so strip it off if it exists. */
2366 char *command
= elf_tdata (abfd
)->core
->command
;
2367 int n
= strlen (command
);
2369 if (0 < n
&& command
[n
- 1] == ' ')
2370 command
[n
- 1] = '\0';
2377 elfcore_write_ppc_linux_prpsinfo32
2381 const struct elf_internal_linux_prpsinfo
*prpsinfo
)
2383 struct elf_external_ppc_linux_prpsinfo32 data
;
2385 swap_ppc_linux_prpsinfo32_out (abfd
, prpsinfo
, &data
);
2386 return elfcore_write_note (abfd
, buf
, bufsiz
,
2387 "CORE", NT_PRPSINFO
, &data
, sizeof (data
));
2391 ppc_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
, ...)
2403 va_start (ap
, note_type
);
2404 memset (data
, 0, sizeof (data
));
2405 strncpy (data
+ 32, va_arg (ap
, const char *), 16);
2406 strncpy (data
+ 48, va_arg (ap
, const char *), 80);
2408 return elfcore_write_note (abfd
, buf
, bufsiz
,
2409 "CORE", note_type
, data
, sizeof (data
));
2420 va_start (ap
, note_type
);
2421 memset (data
, 0, 72);
2422 pid
= va_arg (ap
, long);
2423 bfd_put_32 (abfd
, pid
, data
+ 24);
2424 cursig
= va_arg (ap
, int);
2425 bfd_put_16 (abfd
, cursig
, data
+ 12);
2426 greg
= va_arg (ap
, const void *);
2427 memcpy (data
+ 72, greg
, 192);
2428 memset (data
+ 264, 0, 4);
2430 return elfcore_write_note (abfd
, buf
, bufsiz
,
2431 "CORE", note_type
, data
, sizeof (data
));
2437 ppc_elf_lookup_section_flags (char *flag_name
)
2440 if (!strcmp (flag_name
, "SHF_PPC_VLE"))
2446 /* Add the VLE flag if required. */
2449 ppc_elf_section_processing (bfd
*abfd
, Elf_Internal_Shdr
*shdr
)
2451 if (bfd_get_mach (abfd
) == bfd_mach_ppc_vle
2452 && (shdr
->sh_flags
& SHF_EXECINSTR
) != 0)
2453 shdr
->sh_flags
|= SHF_PPC_VLE
;
2458 /* Return address for Ith PLT stub in section PLT, for relocation REL
2459 or (bfd_vma) -1 if it should not be included. */
2462 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
2463 const asection
*plt ATTRIBUTE_UNUSED
,
2466 return rel
->address
;
2469 /* Handle a PowerPC specific section when reading an object file. This
2470 is called when bfd_section_from_shdr finds a section with an unknown
2474 ppc_elf_section_from_shdr (bfd
*abfd
,
2475 Elf_Internal_Shdr
*hdr
,
2482 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
2485 newsect
= hdr
->bfd_section
;
2486 flags
= bfd_get_section_flags (abfd
, newsect
);
2487 if (hdr
->sh_flags
& SHF_EXCLUDE
)
2488 flags
|= SEC_EXCLUDE
;
2490 if (hdr
->sh_type
== SHT_ORDERED
)
2491 flags
|= SEC_SORT_ENTRIES
;
2493 bfd_set_section_flags (abfd
, newsect
, flags
);
2497 /* Set up any other section flags and such that may be necessary. */
2500 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
2501 Elf_Internal_Shdr
*shdr
,
2504 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
2505 shdr
->sh_type
= SHT_ORDERED
;
2510 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2511 need to bump up the number of section headers. */
2514 ppc_elf_additional_program_headers (bfd
*abfd
,
2515 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2520 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2521 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2524 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2525 if (s
!= NULL
&& (s
->flags
& SEC_ALLOC
) != 0)
2531 /* Modify the segment map for VLE executables. */
2534 ppc_elf_modify_segment_map (bfd
*abfd
,
2535 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2537 struct elf_segment_map
*m
, *n
;
2540 bfd_boolean sect0_vle
, sectj_vle
;
2542 /* At this point in the link, output sections have already been sorted by
2543 LMA and assigned to segments. All that is left to do is to ensure
2544 there is no mixing of VLE & non-VLE sections in a text segment.
2545 If we find that case, we split the segment.
2546 We maintain the original output section order. */
2548 for (m
= elf_seg_map (abfd
); m
!= NULL
; m
= m
->next
)
2553 sect0_vle
= (elf_section_flags (m
->sections
[0]) & SHF_PPC_VLE
) != 0;
2554 for (j
= 1; j
< m
->count
; ++j
)
2556 sectj_vle
= (elf_section_flags (m
->sections
[j
]) & SHF_PPC_VLE
) != 0;
2558 if (sectj_vle
!= sect0_vle
)
2564 /* sections 0..j-1 stay in this (current) segment,
2565 the remainder are put in a new segment.
2566 The scan resumes with the new segment. */
2568 /* Fix the new segment. */
2569 amt
= sizeof (struct elf_segment_map
);
2570 amt
+= (m
->count
- j
- 1) * sizeof (asection
*);
2571 n
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2575 n
->p_type
= PT_LOAD
;
2576 n
->p_flags
= PF_X
| PF_R
;
2578 n
->p_flags
|= PF_PPC_VLE
;
2579 n
->count
= m
->count
- j
;
2580 for (k
= 0; k
< n
->count
; ++k
)
2582 n
->sections
[k
] = m
->sections
[j
+k
];
2583 m
->sections
[j
+k
] = NULL
;
2588 /* Fix the current segment */
2595 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2596 .PPC.EMB.sbss0 a normal section, and not a bss section so
2597 that the linker doesn't crater when trying to make more than
2600 static const struct bfd_elf_special_section ppc_elf_special_sections
[] =
2602 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
2603 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2604 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2605 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2606 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS
, SHF_ALLOC
},
2607 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED
, SHF_ALLOC
},
2608 { STRING_COMMA_LEN (APUINFO_SECTION_NAME
), 0, SHT_NOTE
, 0 },
2609 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2610 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS
, SHF_ALLOC
},
2611 { NULL
, 0, 0, 0, 0 }
2614 /* This is what we want for new plt/got. */
2615 static struct bfd_elf_special_section ppc_alt_plt
=
2616 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS
, SHF_ALLOC
};
2618 static const struct bfd_elf_special_section
*
2619 ppc_elf_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
2621 const struct bfd_elf_special_section
*ssect
;
2623 /* See if this is one of the special sections. */
2624 if (sec
->name
== NULL
)
2627 ssect
= _bfd_elf_get_special_section (sec
->name
, ppc_elf_special_sections
,
2631 if (ssect
== ppc_elf_special_sections
&& (sec
->flags
& SEC_LOAD
) != 0)
2632 ssect
= &ppc_alt_plt
;
2636 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
2639 /* Very simple linked list structure for recording apuinfo values. */
2640 typedef struct apuinfo_list
2642 struct apuinfo_list
*next
;
2643 unsigned long value
;
2647 static apuinfo_list
*head
;
2648 static bfd_boolean apuinfo_set
;
2651 apuinfo_list_init (void)
2654 apuinfo_set
= FALSE
;
2658 apuinfo_list_add (unsigned long value
)
2660 apuinfo_list
*entry
= head
;
2662 while (entry
!= NULL
)
2664 if (entry
->value
== value
)
2666 entry
= entry
->next
;
2669 entry
= bfd_malloc (sizeof (* entry
));
2673 entry
->value
= value
;
2679 apuinfo_list_length (void)
2681 apuinfo_list
*entry
;
2682 unsigned long count
;
2684 for (entry
= head
, count
= 0;
2686 entry
= entry
->next
)
2692 static inline unsigned long
2693 apuinfo_list_element (unsigned long number
)
2695 apuinfo_list
* entry
;
2699 entry
= entry
->next
)
2702 return entry
? entry
->value
: 0;
2706 apuinfo_list_finish (void)
2708 apuinfo_list
*entry
;
2710 for (entry
= head
; entry
;)
2712 apuinfo_list
*next
= entry
->next
;
2720 /* Scan the input BFDs and create a linked list of
2721 the APUinfo values that will need to be emitted. */
2724 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
2728 char *buffer
= NULL
;
2729 bfd_size_type largest_input_size
= 0;
2731 unsigned long length
;
2732 const char *error_message
= NULL
;
2734 if (link_info
== NULL
)
2737 apuinfo_list_init ();
2739 /* Read in the input sections contents. */
2740 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
2742 unsigned long datum
;
2744 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
2748 error_message
= _("corrupt %s section in %B");
2749 length
= asec
->size
;
2754 if (largest_input_size
< asec
->size
)
2758 largest_input_size
= asec
->size
;
2759 buffer
= bfd_malloc (largest_input_size
);
2764 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
2765 || (bfd_bread (buffer
, length
, ibfd
) != length
))
2767 error_message
= _("unable to read in %s section from %B");
2771 /* Verify the contents of the header. Note - we have to
2772 extract the values this way in order to allow for a
2773 host whose endian-ness is different from the target. */
2774 datum
= bfd_get_32 (ibfd
, buffer
);
2775 if (datum
!= sizeof APUINFO_LABEL
)
2778 datum
= bfd_get_32 (ibfd
, buffer
+ 8);
2782 if (strcmp (buffer
+ 12, APUINFO_LABEL
) != 0)
2785 /* Get the number of bytes used for apuinfo entries. */
2786 datum
= bfd_get_32 (ibfd
, buffer
+ 4);
2787 if (datum
+ 20 != length
)
2790 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2791 for (i
= 0; i
< datum
; i
+= 4)
2792 apuinfo_list_add (bfd_get_32 (ibfd
, buffer
+ 20 + i
));
2795 error_message
= NULL
;
2799 /* Compute the size of the output section. */
2800 unsigned num_entries
= apuinfo_list_length ();
2802 /* Set the output section size, if it exists. */
2803 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2805 if (asec
&& ! bfd_set_section_size (abfd
, asec
, 20 + num_entries
* 4))
2808 error_message
= _("warning: unable to set size of %s section in %B");
2817 (*_bfd_error_handler
) (error_message
, ibfd
, APUINFO_SECTION_NAME
);
2820 /* Prevent the output section from accumulating the input sections'
2821 contents. We have already stored this in our linked list structure. */
2824 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
2825 struct bfd_link_info
*link_info ATTRIBUTE_UNUSED
,
2827 bfd_byte
*contents ATTRIBUTE_UNUSED
)
2829 return apuinfo_set
&& strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0;
2832 /* Finally we can generate the output section. */
2835 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
2840 unsigned num_entries
;
2841 bfd_size_type length
;
2843 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
2850 length
= asec
->size
;
2854 buffer
= bfd_malloc (length
);
2857 (*_bfd_error_handler
)
2858 (_("failed to allocate space for new APUinfo section."));
2862 /* Create the apuinfo header. */
2863 num_entries
= apuinfo_list_length ();
2864 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
2865 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
2866 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
2867 strcpy ((char *) buffer
+ 12, APUINFO_LABEL
);
2870 for (i
= 0; i
< num_entries
; i
++)
2872 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
2876 if (length
!= asec
->size
)
2877 (*_bfd_error_handler
) (_("failed to compute new APUinfo section."));
2879 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
2880 (*_bfd_error_handler
) (_("failed to install new APUinfo section."));
2884 apuinfo_list_finish ();
2888 is_nonpic_glink_stub (bfd
*abfd
, asection
*glink
, bfd_vma off
)
2890 bfd_byte buf
[GLINK_ENTRY_SIZE
];
2892 if (!bfd_get_section_contents (abfd
, glink
, buf
, off
, GLINK_ENTRY_SIZE
))
2895 return ((bfd_get_32 (abfd
, buf
+ 0) & 0xffff0000) == LIS_11
2896 && (bfd_get_32 (abfd
, buf
+ 4) & 0xffff0000) == LWZ_11_11
2897 && bfd_get_32 (abfd
, buf
+ 8) == MTCTR_11
2898 && bfd_get_32 (abfd
, buf
+ 12) == BCTR
);
2902 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2904 bfd_vma vma
= *(bfd_vma
*) ptr
;
2905 return ((section
->flags
& SEC_ALLOC
) != 0
2906 && section
->vma
<= vma
2907 && vma
< section
->vma
+ section
->size
);
2911 ppc_elf_get_synthetic_symtab (bfd
*abfd
, long symcount
, asymbol
**syms
,
2912 long dynsymcount
, asymbol
**dynsyms
,
2915 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2916 asection
*plt
, *relplt
, *dynamic
, *glink
;
2917 bfd_vma glink_vma
= 0;
2918 bfd_vma resolv_vma
= 0;
2929 if ((abfd
->flags
& (DYNAMIC
| EXEC_P
)) == 0)
2932 if (dynsymcount
<= 0)
2935 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2939 plt
= bfd_get_section_by_name (abfd
, ".plt");
2943 /* Call common code to handle old-style executable PLTs. */
2944 if (elf_section_flags (plt
) & SHF_EXECINSTR
)
2945 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
2946 dynsymcount
, dynsyms
, ret
);
2948 /* If this object was prelinked, the prelinker stored the address
2949 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2950 dynamic
= bfd_get_section_by_name (abfd
, ".dynamic");
2951 if (dynamic
!= NULL
)
2953 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
2955 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
2957 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
2960 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
2961 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
2964 extdynend
= extdyn
+ dynamic
->size
;
2965 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
2967 Elf_Internal_Dyn dyn
;
2968 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
2970 if (dyn
.d_tag
== DT_NULL
)
2973 if (dyn
.d_tag
== DT_PPC_GOT
)
2975 unsigned int g_o_t
= dyn
.d_un
.d_val
;
2976 asection
*got
= bfd_get_section_by_name (abfd
, ".got");
2978 && bfd_get_section_contents (abfd
, got
, buf
,
2979 g_o_t
- got
->vma
+ 4, 4))
2980 glink_vma
= bfd_get_32 (abfd
, buf
);
2987 /* Otherwise we read the first plt entry. */
2990 if (bfd_get_section_contents (abfd
, plt
, buf
, 0, 4))
2991 glink_vma
= bfd_get_32 (abfd
, buf
);
2997 /* The .glink section usually does not survive the final
2998 link; search for the section (usually .text) where the
2999 glink stubs now reside. */
3000 glink
= bfd_sections_find_if (abfd
, section_covers_vma
, &glink_vma
);
3004 /* Determine glink PLT resolver by reading the relative branch
3005 from the first glink stub. */
3006 if (bfd_get_section_contents (abfd
, glink
, buf
,
3007 glink_vma
- glink
->vma
, 4))
3009 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3011 /* The first glink stub may either branch to the resolver ... */
3013 if ((insn
& ~0x3fffffc) == 0)
3014 resolv_vma
= glink_vma
+ (insn
^ 0x2000000) - 0x2000000;
3016 /* ... or fall through a bunch of NOPs. */
3017 else if ((insn
^ B
^ NOP
) == 0)
3019 bfd_get_section_contents (abfd
, glink
, buf
,
3020 glink_vma
- glink
->vma
+ i
, 4);
3022 if (bfd_get_32 (abfd
, buf
) != NOP
)
3024 resolv_vma
= glink_vma
+ i
;
3029 count
= relplt
->size
/ sizeof (Elf32_External_Rela
);
3030 /* If the stubs are those for -shared/-pie then we might have
3031 multiple stubs for each plt entry. If that is the case then
3032 there is no way to associate stubs with their plt entries short
3033 of figuring out the GOT pointer value used in the stub. */
3034 if (!is_nonpic_glink_stub (abfd
, glink
,
3035 glink_vma
- GLINK_ENTRY_SIZE
- glink
->vma
))
3038 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3039 if (! (*slurp_relocs
) (abfd
, relplt
, dynsyms
, TRUE
))
3042 size
= count
* sizeof (asymbol
);
3043 p
= relplt
->relocation
;
3044 for (i
= 0; i
< count
; i
++, p
++)
3046 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3048 size
+= sizeof ("+0x") - 1 + 8;
3051 size
+= sizeof (asymbol
) + sizeof ("__glink");
3054 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3056 s
= *ret
= bfd_malloc (size
);
3060 stub_vma
= glink_vma
;
3061 names
= (char *) (s
+ count
+ 1 + (resolv_vma
!= 0));
3062 p
= relplt
->relocation
+ count
- 1;
3063 for (i
= 0; i
< count
; i
++)
3067 *s
= **p
->sym_ptr_ptr
;
3068 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3069 we are defining a symbol, ensure one of them is set. */
3070 if ((s
->flags
& BSF_LOCAL
) == 0)
3071 s
->flags
|= BSF_GLOBAL
;
3072 s
->flags
|= BSF_SYNTHETIC
;
3075 if (strcmp ((*p
->sym_ptr_ptr
)->name
, "__tls_get_addr_opt") == 0)
3077 s
->value
= stub_vma
- glink
->vma
;
3080 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3081 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3085 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3086 names
+= sizeof ("+0x") - 1;
3087 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3088 names
+= strlen (names
);
3090 memcpy (names
, "@plt", sizeof ("@plt"));
3091 names
+= sizeof ("@plt");
3096 /* Add a symbol at the start of the glink branch table. */
3097 memset (s
, 0, sizeof *s
);
3099 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3101 s
->value
= glink_vma
- glink
->vma
;
3103 memcpy (names
, "__glink", sizeof ("__glink"));
3104 names
+= sizeof ("__glink");
3110 /* Add a symbol for the glink PLT resolver. */
3111 memset (s
, 0, sizeof *s
);
3113 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3115 s
->value
= resolv_vma
- glink
->vma
;
3117 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3118 names
+= sizeof ("__glink_PLTresolve");
3126 /* The following functions are specific to the ELF linker, while
3127 functions above are used generally. They appear in this file more
3128 or less in the order in which they are called. eg.
3129 ppc_elf_check_relocs is called early in the link process,
3130 ppc_elf_finish_dynamic_sections is one of the last functions
3133 /* Track PLT entries needed for a given symbol. We might need more
3134 than one glink entry per symbol when generating a pic binary. */
3137 struct plt_entry
*next
;
3139 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3140 This field stores the offset into .got2 used to initialise the
3141 GOT pointer reg. It will always be at least 32768. (Current
3142 gcc always uses an offset of 32768, but ld -r will pack .got2
3143 sections together resulting in larger offsets). */
3146 /* The .got2 section. */
3149 /* PLT refcount or offset. */
3152 bfd_signed_vma refcount
;
3156 /* .glink stub offset. */
3157 bfd_vma glink_offset
;
3160 /* Of those relocs that might be copied as dynamic relocs, this function
3161 selects those that must be copied when linking a shared library,
3162 even when the symbol is local. */
3165 must_be_dyn_reloc (struct bfd_link_info
*info
,
3166 enum elf_ppc_reloc_type r_type
)
3175 case R_PPC_REL14_BRTAKEN
:
3176 case R_PPC_REL14_BRNTAKEN
:
3182 case R_PPC_TPREL16_LO
:
3183 case R_PPC_TPREL16_HI
:
3184 case R_PPC_TPREL16_HA
:
3185 return !bfd_link_executable (info
);
3189 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3190 copying dynamic variables from a shared lib into an app's dynbss
3191 section, and instead use a dynamic relocation to point into the
3193 #define ELIMINATE_COPY_RELOCS 1
3195 /* Used to track dynamic relocations for local symbols. */
3196 struct ppc_dyn_relocs
3198 struct ppc_dyn_relocs
*next
;
3200 /* The input section of the reloc. */
3203 /* Total number of relocs copied for the input section. */
3204 unsigned int count
: 31;
3206 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3207 unsigned int ifunc
: 1;
3210 /* PPC ELF linker hash entry. */
3212 struct ppc_elf_link_hash_entry
3214 struct elf_link_hash_entry elf
;
3216 /* If this symbol is used in the linker created sections, the processor
3217 specific backend uses this field to map the field into the offset
3218 from the beginning of the section. */
3219 elf_linker_section_pointers_t
*linker_section_pointer
;
3221 /* Track dynamic relocs copied for this symbol. */
3222 struct elf_dyn_relocs
*dyn_relocs
;
3224 /* Contexts in which symbol is used in the GOT (or TOC).
3225 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3226 corresponding relocs are encountered during check_relocs.
3227 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3228 indicate the corresponding GOT entry type is not needed. */
3229 #define TLS_GD 1 /* GD reloc. */
3230 #define TLS_LD 2 /* LD reloc. */
3231 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3232 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3233 #define TLS_TLS 16 /* Any TLS reloc. */
3234 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3235 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3238 /* Nonzero if we have seen a small data relocation referring to this
3240 unsigned char has_sda_refs
: 1;
3242 /* Flag use of given relocations. */
3243 unsigned char has_addr16_ha
: 1;
3244 unsigned char has_addr16_lo
: 1;
3247 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3249 /* PPC ELF linker hash table. */
3251 struct ppc_elf_link_hash_table
3253 struct elf_link_hash_table elf
;
3255 /* Various options passed from the linker. */
3256 struct ppc_elf_params
*params
;
3258 /* Short-cuts to get to dynamic linker sections. */
3270 elf_linker_section_t sdata
[2];
3272 asection
*glink_eh_frame
;
3274 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3277 /* The .got.plt section (VxWorks only)*/
3280 /* Shortcut to __tls_get_addr. */
3281 struct elf_link_hash_entry
*tls_get_addr
;
3283 /* The bfd that forced an old-style PLT. */
3286 /* TLS local dynamic got entry handling. */
3288 bfd_signed_vma refcount
;
3292 /* Offset of branch table to PltResolve function in glink. */
3293 bfd_vma glink_pltresolve
;
3295 /* Size of reserved GOT entries. */
3296 unsigned int got_header_size
;
3297 /* Non-zero if allocating the header left a gap. */
3298 unsigned int got_gap
;
3300 /* The type of PLT we have chosen to use. */
3301 enum ppc_elf_plt_type plt_type
;
3303 /* True if the target system is VxWorks. */
3304 unsigned int is_vxworks
:1;
3306 /* The size of PLT entries. */
3308 /* The distance between adjacent PLT slots. */
3310 /* The size of the first PLT entry. */
3311 int plt_initial_entry_size
;
3313 /* Small local sym cache. */
3314 struct sym_cache sym_cache
;
3317 /* Rename some of the generic section flags to better document how they
3318 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3320 /* Nonzero if this section has TLS related relocations. */
3321 #define has_tls_reloc sec_flg0
3323 /* Nonzero if this section has a call to __tls_get_addr. */
3324 #define has_tls_get_addr_call sec_flg1
3326 /* Get the PPC ELF linker hash table from a link_info structure. */
3328 #define ppc_elf_hash_table(p) \
3329 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3330 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3332 /* Create an entry in a PPC ELF linker hash table. */
3334 static struct bfd_hash_entry
*
3335 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3336 struct bfd_hash_table
*table
,
3339 /* Allocate the structure if it has not already been allocated by a
3343 entry
= bfd_hash_allocate (table
,
3344 sizeof (struct ppc_elf_link_hash_entry
));
3349 /* Call the allocation method of the superclass. */
3350 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3353 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
3354 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
3355 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
3356 ppc_elf_hash_entry (entry
)->has_sda_refs
= 0;
3362 /* Create a PPC ELF linker hash table. */
3364 static struct bfd_link_hash_table
*
3365 ppc_elf_link_hash_table_create (bfd
*abfd
)
3367 struct ppc_elf_link_hash_table
*ret
;
3368 static struct ppc_elf_params default_params
3369 = { PLT_OLD
, 0, 1, 0, 0, 12, 0, 0 };
3371 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
3375 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
3376 ppc_elf_link_hash_newfunc
,
3377 sizeof (struct ppc_elf_link_hash_entry
),
3384 ret
->elf
.init_plt_refcount
.refcount
= 0;
3385 ret
->elf
.init_plt_refcount
.glist
= NULL
;
3386 ret
->elf
.init_plt_offset
.offset
= 0;
3387 ret
->elf
.init_plt_offset
.glist
= NULL
;
3389 ret
->params
= &default_params
;
3391 ret
->sdata
[0].name
= ".sdata";
3392 ret
->sdata
[0].sym_name
= "_SDA_BASE_";
3393 ret
->sdata
[0].bss_name
= ".sbss";
3395 ret
->sdata
[1].name
= ".sdata2";
3396 ret
->sdata
[1].sym_name
= "_SDA2_BASE_";
3397 ret
->sdata
[1].bss_name
= ".sbss2";
3399 ret
->plt_entry_size
= 12;
3400 ret
->plt_slot_size
= 8;
3401 ret
->plt_initial_entry_size
= 72;
3403 return &ret
->elf
.root
;
3406 /* Hook linker params into hash table. */
3409 ppc_elf_link_params (struct bfd_link_info
*info
, struct ppc_elf_params
*params
)
3411 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3414 htab
->params
= params
;
3415 params
->pagesize_p2
= bfd_log2 (params
->pagesize
);
3418 /* Create .got and the related sections. */
3421 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
3423 struct ppc_elf_link_hash_table
*htab
;
3427 if (!_bfd_elf_create_got_section (abfd
, info
))
3430 htab
= ppc_elf_hash_table (info
);
3431 htab
->got
= s
= bfd_get_linker_section (abfd
, ".got");
3435 if (htab
->is_vxworks
)
3437 htab
->sgotplt
= bfd_get_linker_section (abfd
, ".got.plt");
3443 /* The powerpc .got has a blrl instruction in it. Mark it
3445 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
3446 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3447 if (!bfd_set_section_flags (abfd
, s
, flags
))
3451 htab
->relgot
= bfd_get_linker_section (abfd
, ".rela.got");
3458 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3459 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3460 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3463 ppc_elf_create_linker_section (bfd
*abfd
,
3464 struct bfd_link_info
*info
,
3466 elf_linker_section_t
*lsect
)
3470 flags
|= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3471 | SEC_LINKER_CREATED
);
3473 s
= bfd_make_section_anyway_with_flags (abfd
, lsect
->name
, flags
);
3478 /* Define the sym on the first section of this name. */
3479 s
= bfd_get_section_by_name (abfd
, lsect
->name
);
3481 lsect
->sym
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, lsect
->sym_name
);
3482 if (lsect
->sym
== NULL
)
3484 lsect
->sym
->root
.u
.def
.value
= 0x8000;
3489 ppc_elf_create_glink (bfd
*abfd
, struct bfd_link_info
*info
)
3491 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
3495 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
| SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3497 s
= bfd_make_section_anyway_with_flags (abfd
, ".glink", flags
);
3500 || !bfd_set_section_alignment (abfd
, s
,
3501 htab
->params
->ppc476_workaround
? 6 : 4))
3504 if (!info
->no_ld_generated_unwind_info
)
3506 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3507 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3508 s
= bfd_make_section_anyway_with_flags (abfd
, ".eh_frame", flags
);
3509 htab
->glink_eh_frame
= s
;
3511 || !bfd_set_section_alignment (abfd
, s
, 2))
3515 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
3516 s
= bfd_make_section_anyway_with_flags (abfd
, ".iplt", flags
);
3519 || !bfd_set_section_alignment (abfd
, s
, 4))
3522 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3523 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3524 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.iplt", flags
);
3527 || ! bfd_set_section_alignment (abfd
, s
, 2))
3530 if (!ppc_elf_create_linker_section (abfd
, info
, 0,
3534 if (!ppc_elf_create_linker_section (abfd
, info
, SEC_READONLY
,
3541 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3542 to output sections (just like _bfd_elf_create_dynamic_sections has
3543 to create .dynbss and .rela.bss). */
3546 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3548 struct ppc_elf_link_hash_table
*htab
;
3552 htab
= ppc_elf_hash_table (info
);
3554 if (htab
->got
== NULL
3555 && !ppc_elf_create_got (abfd
, info
))
3558 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
3561 if (htab
->glink
== NULL
3562 && !ppc_elf_create_glink (abfd
, info
))
3565 htab
->dynbss
= bfd_get_linker_section (abfd
, ".dynbss");
3566 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynsbss",
3567 SEC_ALLOC
| SEC_LINKER_CREATED
);
3572 if (! bfd_link_pic (info
))
3574 htab
->relbss
= bfd_get_linker_section (abfd
, ".rela.bss");
3575 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_HAS_CONTENTS
3576 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3577 s
= bfd_make_section_anyway_with_flags (abfd
, ".rela.sbss", flags
);
3580 || ! bfd_set_section_alignment (abfd
, s
, 2))
3584 if (htab
->is_vxworks
3585 && !elf_vxworks_create_dynamic_sections (abfd
, info
, &htab
->srelplt2
))
3588 htab
->relplt
= bfd_get_linker_section (abfd
, ".rela.plt");
3589 htab
->plt
= s
= bfd_get_linker_section (abfd
, ".plt");
3593 flags
= SEC_ALLOC
| SEC_CODE
| SEC_LINKER_CREATED
;
3594 if (htab
->plt_type
== PLT_VXWORKS
)
3595 /* The VxWorks PLT is a loaded section with contents. */
3596 flags
|= SEC_HAS_CONTENTS
| SEC_LOAD
| SEC_READONLY
;
3597 return bfd_set_section_flags (abfd
, s
, flags
);
3600 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3603 ppc_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3604 struct elf_link_hash_entry
*dir
,
3605 struct elf_link_hash_entry
*ind
)
3607 struct ppc_elf_link_hash_entry
*edir
, *eind
;
3609 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
3610 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
3612 edir
->tls_mask
|= eind
->tls_mask
;
3613 edir
->has_sda_refs
|= eind
->has_sda_refs
;
3615 /* If called to transfer flags for a weakdef during processing
3616 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3617 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3618 if (!(ELIMINATE_COPY_RELOCS
3619 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3620 && edir
->elf
.dynamic_adjusted
))
3621 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
3623 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
3624 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
3625 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
3626 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
3627 edir
->elf
.pointer_equality_needed
|= eind
->elf
.pointer_equality_needed
;
3629 if (eind
->dyn_relocs
!= NULL
)
3631 if (edir
->dyn_relocs
!= NULL
)
3633 struct elf_dyn_relocs
**pp
;
3634 struct elf_dyn_relocs
*p
;
3636 /* Add reloc counts against the indirect sym to the direct sym
3637 list. Merge any entries against the same section. */
3638 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3640 struct elf_dyn_relocs
*q
;
3642 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3643 if (q
->sec
== p
->sec
)
3645 q
->pc_count
+= p
->pc_count
;
3646 q
->count
+= p
->count
;
3653 *pp
= edir
->dyn_relocs
;
3656 edir
->dyn_relocs
= eind
->dyn_relocs
;
3657 eind
->dyn_relocs
= NULL
;
3660 /* If we were called to copy over info for a weak sym, that's all.
3661 You might think dyn_relocs need not be copied over; After all,
3662 both syms will be dynamic or both non-dynamic so we're just
3663 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3664 code in ppc_elf_adjust_dynamic_symbol needs to check for
3665 dyn_relocs in read-only sections, and it does so on what is the
3667 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3670 /* Copy over the GOT refcount entries that we may have already seen to
3671 the symbol which just became indirect. */
3672 edir
->elf
.got
.refcount
+= eind
->elf
.got
.refcount
;
3673 eind
->elf
.got
.refcount
= 0;
3675 /* And plt entries. */
3676 if (eind
->elf
.plt
.plist
!= NULL
)
3678 if (edir
->elf
.plt
.plist
!= NULL
)
3680 struct plt_entry
**entp
;
3681 struct plt_entry
*ent
;
3683 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3685 struct plt_entry
*dent
;
3687 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3688 if (dent
->sec
== ent
->sec
&& dent
->addend
== ent
->addend
)
3690 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3697 *entp
= edir
->elf
.plt
.plist
;
3700 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3701 eind
->elf
.plt
.plist
= NULL
;
3704 if (eind
->elf
.dynindx
!= -1)
3706 if (edir
->elf
.dynindx
!= -1)
3707 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
3708 edir
->elf
.dynstr_index
);
3709 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3710 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3711 eind
->elf
.dynindx
= -1;
3712 eind
->elf
.dynstr_index
= 0;
3716 /* Hook called by the linker routine which adds symbols from an object
3717 file. We use it to put .comm items in .sbss, and not .bss. */
3720 ppc_elf_add_symbol_hook (bfd
*abfd
,
3721 struct bfd_link_info
*info
,
3722 Elf_Internal_Sym
*sym
,
3723 const char **namep ATTRIBUTE_UNUSED
,
3724 flagword
*flagsp ATTRIBUTE_UNUSED
,
3728 if (sym
->st_shndx
== SHN_COMMON
3729 && !bfd_link_relocatable (info
)
3730 && is_ppc_elf (info
->output_bfd
)
3731 && sym
->st_size
<= elf_gp_size (abfd
))
3733 /* Common symbols less than or equal to -G nn bytes are automatically
3735 struct ppc_elf_link_hash_table
*htab
;
3737 htab
= ppc_elf_hash_table (info
);
3738 if (htab
->sbss
== NULL
)
3740 flagword flags
= SEC_IS_COMMON
| SEC_LINKER_CREATED
;
3742 if (!htab
->elf
.dynobj
)
3743 htab
->elf
.dynobj
= abfd
;
3745 htab
->sbss
= bfd_make_section_anyway_with_flags (htab
->elf
.dynobj
,
3748 if (htab
->sbss
== NULL
)
3753 *valp
= sym
->st_size
;
3756 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
3757 && (abfd
->flags
& DYNAMIC
) == 0
3758 && bfd_get_flavour (info
->output_bfd
) == bfd_target_elf_flavour
)
3759 elf_tdata (info
->output_bfd
)->has_gnu_symbols
|= elf_gnu_symbol_ifunc
;
3764 /* Find a linker generated pointer with a given addend and type. */
3766 static elf_linker_section_pointers_t
*
3767 elf_find_pointer_linker_section
3768 (elf_linker_section_pointers_t
*linker_pointers
,
3770 elf_linker_section_t
*lsect
)
3772 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
3773 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
3774 return linker_pointers
;
3779 /* Allocate a pointer to live in a linker created section. */
3782 elf_allocate_pointer_linker_section (bfd
*abfd
,
3783 elf_linker_section_t
*lsect
,
3784 struct elf_link_hash_entry
*h
,
3785 const Elf_Internal_Rela
*rel
)
3787 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
3788 elf_linker_section_pointers_t
*linker_section_ptr
;
3789 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
3792 BFD_ASSERT (lsect
!= NULL
);
3794 /* Is this a global symbol? */
3797 struct ppc_elf_link_hash_entry
*eh
;
3799 /* Has this symbol already been allocated? If so, our work is done. */
3800 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3801 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
3806 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
3810 BFD_ASSERT (is_ppc_elf (abfd
));
3812 /* Allocation of a pointer to a local symbol. */
3813 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
3815 /* Allocate a table to hold the local symbols if first time. */
3818 unsigned int num_symbols
= elf_symtab_hdr (abfd
).sh_info
;
3821 amt
*= sizeof (elf_linker_section_pointers_t
*);
3822 ptr
= bfd_zalloc (abfd
, amt
);
3827 elf_local_ptr_offsets (abfd
) = ptr
;
3830 /* Has this symbol already been allocated? If so, our work is done. */
3831 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
3836 ptr_linker_section_ptr
= &ptr
[r_symndx
];
3839 /* Allocate space for a pointer in the linker section, and allocate
3840 a new pointer record from internal memory. */
3841 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
3842 amt
= sizeof (elf_linker_section_pointers_t
);
3843 linker_section_ptr
= bfd_alloc (abfd
, amt
);
3845 if (!linker_section_ptr
)
3848 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
3849 linker_section_ptr
->addend
= rel
->r_addend
;
3850 linker_section_ptr
->lsect
= lsect
;
3851 *ptr_linker_section_ptr
= linker_section_ptr
;
3853 if (!bfd_set_section_alignment (lsect
->section
->owner
, lsect
->section
, 2))
3855 linker_section_ptr
->offset
= lsect
->section
->size
;
3856 lsect
->section
->size
+= 4;
3860 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3861 lsect
->name
, (long) linker_section_ptr
->offset
,
3862 (long) lsect
->section
->size
);
3868 static struct plt_entry
**
3869 update_local_sym_info (bfd
*abfd
,
3870 Elf_Internal_Shdr
*symtab_hdr
,
3871 unsigned long r_symndx
,
3874 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3875 struct plt_entry
**local_plt
;
3876 char *local_got_tls_masks
;
3878 if (local_got_refcounts
== NULL
)
3880 bfd_size_type size
= symtab_hdr
->sh_info
;
3882 size
*= (sizeof (*local_got_refcounts
)
3883 + sizeof (*local_plt
)
3884 + sizeof (*local_got_tls_masks
));
3885 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3886 if (local_got_refcounts
== NULL
)
3888 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3891 local_plt
= (struct plt_entry
**) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3892 local_got_tls_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
3893 local_got_tls_masks
[r_symndx
] |= tls_type
;
3894 if (tls_type
!= PLT_IFUNC
)
3895 local_got_refcounts
[r_symndx
] += 1;
3896 return local_plt
+ r_symndx
;
3900 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
,
3901 asection
*sec
, bfd_vma addend
)
3903 struct plt_entry
*ent
;
3907 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3908 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3912 bfd_size_type amt
= sizeof (*ent
);
3913 ent
= bfd_alloc (abfd
, amt
);
3918 ent
->addend
= addend
;
3919 ent
->plt
.refcount
= 0;
3922 ent
->plt
.refcount
+= 1;
3926 static struct plt_entry
*
3927 find_plt_ent (struct plt_entry
**plist
, asection
*sec
, bfd_vma addend
)
3929 struct plt_entry
*ent
;
3933 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
3934 if (ent
->sec
== sec
&& ent
->addend
== addend
)
3940 is_branch_reloc (enum elf_ppc_reloc_type r_type
)
3942 return (r_type
== R_PPC_PLTREL24
3943 || r_type
== R_PPC_LOCAL24PC
3944 || r_type
== R_PPC_REL24
3945 || r_type
== R_PPC_REL14
3946 || r_type
== R_PPC_REL14_BRTAKEN
3947 || r_type
== R_PPC_REL14_BRNTAKEN
3948 || r_type
== R_PPC_ADDR24
3949 || r_type
== R_PPC_ADDR14
3950 || r_type
== R_PPC_ADDR14_BRTAKEN
3951 || r_type
== R_PPC_ADDR14_BRNTAKEN
);
3955 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3957 (*_bfd_error_handler
)
3958 (_("%B: relocation %s cannot be used when making a shared object"),
3960 ppc_elf_howto_table
[r_type
]->name
);
3961 bfd_set_error (bfd_error_bad_value
);
3964 /* Look through the relocs for a section during the first phase, and
3965 allocate space in the global offset table or procedure linkage
3969 ppc_elf_check_relocs (bfd
*abfd
,
3970 struct bfd_link_info
*info
,
3972 const Elf_Internal_Rela
*relocs
)
3974 struct ppc_elf_link_hash_table
*htab
;
3975 Elf_Internal_Shdr
*symtab_hdr
;
3976 struct elf_link_hash_entry
**sym_hashes
;
3977 const Elf_Internal_Rela
*rel
;
3978 const Elf_Internal_Rela
*rel_end
;
3979 asection
*got2
, *sreloc
;
3980 struct elf_link_hash_entry
*tga
;
3982 if (bfd_link_relocatable (info
))
3985 /* Don't do anything special with non-loaded, non-alloced sections.
3986 In particular, any relocs in such sections should not affect GOT
3987 and PLT reference counting (ie. we don't allow them to create GOT
3988 or PLT entries), there's no possibility or desire to optimize TLS
3989 relocs, and there's not much point in propagating relocs to shared
3990 libs that the dynamic linker won't relocate. */
3991 if ((sec
->flags
& SEC_ALLOC
) == 0)
3995 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3999 BFD_ASSERT (is_ppc_elf (abfd
));
4001 /* Initialize howto table if not already done. */
4002 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
4003 ppc_elf_howto_init ();
4005 htab
= ppc_elf_hash_table (info
);
4006 if (htab
->glink
== NULL
)
4008 if (htab
->elf
.dynobj
== NULL
)
4009 htab
->elf
.dynobj
= abfd
;
4010 if (!ppc_elf_create_glink (htab
->elf
.dynobj
, info
))
4013 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4014 FALSE
, FALSE
, TRUE
);
4015 symtab_hdr
= &elf_symtab_hdr (abfd
);
4016 sym_hashes
= elf_sym_hashes (abfd
);
4017 got2
= bfd_get_section_by_name (abfd
, ".got2");
4020 rel_end
= relocs
+ sec
->reloc_count
;
4021 for (rel
= relocs
; rel
< rel_end
; rel
++)
4023 unsigned long r_symndx
;
4024 enum elf_ppc_reloc_type r_type
;
4025 struct elf_link_hash_entry
*h
;
4027 struct plt_entry
**ifunc
;
4029 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4030 if (r_symndx
< symtab_hdr
->sh_info
)
4034 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4035 while (h
->root
.type
== bfd_link_hash_indirect
4036 || h
->root
.type
== bfd_link_hash_warning
)
4037 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4039 /* PR15323, ref flags aren't set for references in the same
4041 h
->root
.non_ir_ref
= 1;
4044 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4045 This shows up in particular in an R_PPC_ADDR32 in the eabi
4048 && htab
->got
== NULL
4049 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
4051 if (htab
->elf
.dynobj
== NULL
)
4052 htab
->elf
.dynobj
= abfd
;
4053 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4055 BFD_ASSERT (h
== htab
->elf
.hgot
);
4059 r_type
= ELF32_R_TYPE (rel
->r_info
);
4061 if (h
== NULL
&& !htab
->is_vxworks
)
4063 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4068 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4070 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4071 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4076 /* STT_GNU_IFUNC symbols must have a PLT entry;
4077 In a non-pie executable even when there are
4079 if (!bfd_link_pic (info
)
4080 || is_branch_reloc (r_type
))
4083 if (r_type
== R_PPC_PLTREL24
)
4085 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4086 if (bfd_link_pic (info
))
4087 addend
= rel
->r_addend
;
4089 if (!update_plt_info (abfd
, ifunc
, got2
, addend
))
4095 if (!htab
->is_vxworks
4096 && is_branch_reloc (r_type
)
4101 && (ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSGD
4102 || ELF32_R_TYPE (rel
[-1].r_info
) == R_PPC_TLSLD
))
4103 /* We have a new-style __tls_get_addr call with a marker
4107 /* Mark this section as having an old-style call. */
4108 sec
->has_tls_get_addr_call
= 1;
4115 /* These special tls relocs tie a call to __tls_get_addr with
4116 its parameter symbol. */
4119 case R_PPC_GOT_TLSLD16
:
4120 case R_PPC_GOT_TLSLD16_LO
:
4121 case R_PPC_GOT_TLSLD16_HI
:
4122 case R_PPC_GOT_TLSLD16_HA
:
4123 tls_type
= TLS_TLS
| TLS_LD
;
4126 case R_PPC_GOT_TLSGD16
:
4127 case R_PPC_GOT_TLSGD16_LO
:
4128 case R_PPC_GOT_TLSGD16_HI
:
4129 case R_PPC_GOT_TLSGD16_HA
:
4130 tls_type
= TLS_TLS
| TLS_GD
;
4133 case R_PPC_GOT_TPREL16
:
4134 case R_PPC_GOT_TPREL16_LO
:
4135 case R_PPC_GOT_TPREL16_HI
:
4136 case R_PPC_GOT_TPREL16_HA
:
4137 if (bfd_link_pic (info
))
4138 info
->flags
|= DF_STATIC_TLS
;
4139 tls_type
= TLS_TLS
| TLS_TPREL
;
4142 case R_PPC_GOT_DTPREL16
:
4143 case R_PPC_GOT_DTPREL16_LO
:
4144 case R_PPC_GOT_DTPREL16_HI
:
4145 case R_PPC_GOT_DTPREL16_HA
:
4146 tls_type
= TLS_TLS
| TLS_DTPREL
;
4148 sec
->has_tls_reloc
= 1;
4151 /* GOT16 relocations */
4153 case R_PPC_GOT16_LO
:
4154 case R_PPC_GOT16_HI
:
4155 case R_PPC_GOT16_HA
:
4156 /* This symbol requires a global offset table entry. */
4157 if (htab
->got
== NULL
)
4159 if (htab
->elf
.dynobj
== NULL
)
4160 htab
->elf
.dynobj
= abfd
;
4161 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
4166 h
->got
.refcount
+= 1;
4167 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
4170 /* This is a global offset table entry for a local symbol. */
4171 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
4174 /* We may also need a plt entry if the symbol turns out to be
4176 if (h
!= NULL
&& !bfd_link_pic (info
))
4178 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4183 /* Indirect .sdata relocation. */
4184 case R_PPC_EMB_SDAI16
:
4185 if (bfd_link_pic (info
))
4187 bad_shared_reloc (abfd
, r_type
);
4190 htab
->sdata
[0].sym
->ref_regular
= 1;
4191 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[0],
4196 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4197 h
->non_got_ref
= TRUE
;
4201 /* Indirect .sdata2 relocation. */
4202 case R_PPC_EMB_SDA2I16
:
4203 if (bfd_link_pic (info
))
4205 bad_shared_reloc (abfd
, r_type
);
4208 htab
->sdata
[1].sym
->ref_regular
= 1;
4209 if (!elf_allocate_pointer_linker_section (abfd
, &htab
->sdata
[1],
4214 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4215 h
->non_got_ref
= TRUE
;
4219 case R_PPC_SDAREL16
:
4220 htab
->sdata
[0].sym
->ref_regular
= 1;
4223 case R_PPC_VLE_SDAREL_LO16A
:
4224 case R_PPC_VLE_SDAREL_LO16D
:
4225 case R_PPC_VLE_SDAREL_HI16A
:
4226 case R_PPC_VLE_SDAREL_HI16D
:
4227 case R_PPC_VLE_SDAREL_HA16A
:
4228 case R_PPC_VLE_SDAREL_HA16D
:
4231 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4232 h
->non_got_ref
= TRUE
;
4236 case R_PPC_VLE_REL8
:
4237 case R_PPC_VLE_REL15
:
4238 case R_PPC_VLE_REL24
:
4239 case R_PPC_VLE_LO16A
:
4240 case R_PPC_VLE_LO16D
:
4241 case R_PPC_VLE_HI16A
:
4242 case R_PPC_VLE_HI16D
:
4243 case R_PPC_VLE_HA16A
:
4244 case R_PPC_VLE_HA16D
:
4247 case R_PPC_EMB_SDA2REL
:
4248 if (bfd_link_pic (info
))
4250 bad_shared_reloc (abfd
, r_type
);
4253 htab
->sdata
[1].sym
->ref_regular
= 1;
4256 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4257 h
->non_got_ref
= TRUE
;
4261 case R_PPC_VLE_SDA21_LO
:
4262 case R_PPC_VLE_SDA21
:
4263 case R_PPC_EMB_SDA21
:
4264 case R_PPC_EMB_RELSDA
:
4265 if (bfd_link_pic (info
))
4267 bad_shared_reloc (abfd
, r_type
);
4272 ppc_elf_hash_entry (h
)->has_sda_refs
= TRUE
;
4273 h
->non_got_ref
= TRUE
;
4277 case R_PPC_EMB_NADDR32
:
4278 case R_PPC_EMB_NADDR16
:
4279 case R_PPC_EMB_NADDR16_LO
:
4280 case R_PPC_EMB_NADDR16_HI
:
4281 case R_PPC_EMB_NADDR16_HA
:
4282 if (bfd_link_pic (info
))
4284 bad_shared_reloc (abfd
, r_type
);
4288 h
->non_got_ref
= TRUE
;
4291 case R_PPC_PLTREL24
:
4296 case R_PPC_PLTREL32
:
4297 case R_PPC_PLT16_LO
:
4298 case R_PPC_PLT16_HI
:
4299 case R_PPC_PLT16_HA
:
4301 fprintf (stderr
, "Reloc requires a PLT entry\n");
4303 /* This symbol requires a procedure linkage table entry. */
4308 /* It does not make sense to have a procedure linkage
4309 table entry for a non-ifunc local symbol. */
4310 info
->callbacks
->einfo
4311 (_("%P: %H: %s reloc against local symbol\n"),
4312 abfd
, sec
, rel
->r_offset
,
4313 ppc_elf_howto_table
[r_type
]->name
);
4314 bfd_set_error (bfd_error_bad_value
);
4322 if (r_type
== R_PPC_PLTREL24
)
4324 ppc_elf_tdata (abfd
)->makes_plt_call
= 1;
4325 if (bfd_link_pic (info
))
4326 addend
= rel
->r_addend
;
4329 if (!update_plt_info (abfd
, &h
->plt
.plist
, got2
, addend
))
4334 /* The following relocations don't need to propagate the
4335 relocation if linking a shared object since they are
4336 section relative. */
4338 case R_PPC_SECTOFF_LO
:
4339 case R_PPC_SECTOFF_HI
:
4340 case R_PPC_SECTOFF_HA
:
4341 case R_PPC_DTPREL16
:
4342 case R_PPC_DTPREL16_LO
:
4343 case R_PPC_DTPREL16_HI
:
4344 case R_PPC_DTPREL16_HA
:
4349 case R_PPC_REL16_LO
:
4350 case R_PPC_REL16_HI
:
4351 case R_PPC_REL16_HA
:
4352 case R_PPC_REL16DX_HA
:
4353 ppc_elf_tdata (abfd
)->has_rel16
= 1;
4356 /* These are just markers. */
4358 case R_PPC_EMB_MRKREF
:
4362 case R_PPC_RELAX_PLT
:
4363 case R_PPC_RELAX_PLTREL24
:
4366 /* These should only appear in dynamic objects. */
4368 case R_PPC_GLOB_DAT
:
4369 case R_PPC_JMP_SLOT
:
4370 case R_PPC_RELATIVE
:
4371 case R_PPC_IRELATIVE
:
4374 /* These aren't handled yet. We'll report an error later. */
4376 case R_PPC_EMB_RELSEC16
:
4377 case R_PPC_EMB_RELST_LO
:
4378 case R_PPC_EMB_RELST_HI
:
4379 case R_PPC_EMB_RELST_HA
:
4380 case R_PPC_EMB_BIT_FLD
:
4383 /* This refers only to functions defined in the shared library. */
4384 case R_PPC_LOCAL24PC
:
4385 if (h
!= NULL
&& h
== htab
->elf
.hgot
&& htab
->plt_type
== PLT_UNSET
)
4387 htab
->plt_type
= PLT_OLD
;
4388 htab
->old_bfd
= abfd
;
4390 if (h
!= NULL
&& h
->type
== STT_GNU_IFUNC
)
4392 if (bfd_link_pic (info
))
4394 info
->callbacks
->einfo
4395 (_("%P: %H: @local call to ifunc %s\n"),
4396 abfd
, sec
, rel
->r_offset
,
4397 h
->root
.root
.string
);
4398 bfd_set_error (bfd_error_bad_value
);
4402 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4407 /* This relocation describes the C++ object vtable hierarchy.
4408 Reconstruct it for later use during GC. */
4409 case R_PPC_GNU_VTINHERIT
:
4410 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4414 /* This relocation describes which C++ vtable entries are actually
4415 used. Record for later use during GC. */
4416 case R_PPC_GNU_VTENTRY
:
4417 BFD_ASSERT (h
!= NULL
);
4419 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4423 /* We shouldn't really be seeing these. */
4426 case R_PPC_TPREL16_LO
:
4427 case R_PPC_TPREL16_HI
:
4428 case R_PPC_TPREL16_HA
:
4429 if (bfd_link_pic (info
))
4430 info
->flags
|= DF_STATIC_TLS
;
4434 case R_PPC_DTPMOD32
:
4435 case R_PPC_DTPREL32
:
4441 && (sec
->flags
& SEC_CODE
) != 0
4442 && bfd_link_pic (info
)
4443 && htab
->plt_type
== PLT_UNSET
)
4445 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4446 the start of a function, which assembles to a REL32
4447 reference to .got2. If we detect one of these, then
4448 force the old PLT layout because the linker cannot
4449 reliably deduce the GOT pointer value needed for
4452 Elf_Internal_Sym
*isym
;
4454 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4459 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4462 htab
->plt_type
= PLT_OLD
;
4463 htab
->old_bfd
= abfd
;
4466 if (h
== NULL
|| h
== htab
->elf
.hgot
)
4472 case R_PPC_ADDR16_LO
:
4473 case R_PPC_ADDR16_HI
:
4474 case R_PPC_ADDR16_HA
:
4477 if (h
!= NULL
&& !bfd_link_pic (info
))
4479 /* We may need a plt entry if the symbol turns out to be
4480 a function defined in a dynamic object. */
4481 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4484 /* We may need a copy reloc too. */
4486 h
->pointer_equality_needed
= 1;
4487 if (r_type
== R_PPC_ADDR16_HA
)
4488 ppc_elf_hash_entry (h
)->has_addr16_ha
= 1;
4489 if (r_type
== R_PPC_ADDR16_LO
)
4490 ppc_elf_hash_entry (h
)->has_addr16_lo
= 1;
4496 case R_PPC_REL14_BRTAKEN
:
4497 case R_PPC_REL14_BRNTAKEN
:
4500 if (h
== htab
->elf
.hgot
)
4502 if (htab
->plt_type
== PLT_UNSET
)
4504 htab
->plt_type
= PLT_OLD
;
4505 htab
->old_bfd
= abfd
;
4513 case R_PPC_ADDR14_BRTAKEN
:
4514 case R_PPC_ADDR14_BRNTAKEN
:
4515 if (h
!= NULL
&& !bfd_link_pic (info
))
4517 /* We may need a plt entry if the symbol turns out to be
4518 a function defined in a dynamic object. */
4520 if (!update_plt_info (abfd
, &h
->plt
.plist
, NULL
, 0))
4526 /* If we are creating a shared library, and this is a reloc
4527 against a global symbol, or a non PC relative reloc
4528 against a local symbol, then we need to copy the reloc
4529 into the shared library. However, if we are linking with
4530 -Bsymbolic, we do not need to copy a reloc against a
4531 global symbol which is defined in an object we are
4532 including in the link (i.e., DEF_REGULAR is set). At
4533 this point we have not seen all the input files, so it is
4534 possible that DEF_REGULAR is not set now but will be set
4535 later (it is never cleared). In case of a weak definition,
4536 DEF_REGULAR may be cleared later by a strong definition in
4537 a shared library. We account for that possibility below by
4538 storing information in the dyn_relocs field of the hash
4539 table entry. A similar situation occurs when creating
4540 shared libraries and symbol visibility changes render the
4543 If on the other hand, we are creating an executable, we
4544 may need to keep relocations for symbols satisfied by a
4545 dynamic library if we manage to avoid copy relocs for the
4547 if ((bfd_link_pic (info
)
4548 && (must_be_dyn_reloc (info
, r_type
)
4550 && (!SYMBOLIC_BIND (info
, h
)
4551 || h
->root
.type
== bfd_link_hash_defweak
4552 || !h
->def_regular
))))
4553 || (ELIMINATE_COPY_RELOCS
4554 && !bfd_link_pic (info
)
4556 && (h
->root
.type
== bfd_link_hash_defweak
4557 || !h
->def_regular
)))
4561 "ppc_elf_check_relocs needs to "
4562 "create relocation for %s\n",
4563 (h
&& h
->root
.root
.string
4564 ? h
->root
.root
.string
: "<unknown>"));
4568 if (htab
->elf
.dynobj
== NULL
)
4569 htab
->elf
.dynobj
= abfd
;
4571 sreloc
= _bfd_elf_make_dynamic_reloc_section
4572 (sec
, htab
->elf
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
4578 /* If this is a global symbol, we count the number of
4579 relocations we need for this symbol. */
4582 struct elf_dyn_relocs
*p
;
4583 struct elf_dyn_relocs
**rel_head
;
4585 rel_head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
4587 if (p
== NULL
|| p
->sec
!= sec
)
4589 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4592 p
->next
= *rel_head
;
4599 if (!must_be_dyn_reloc (info
, r_type
))
4604 /* Track dynamic relocs needed for local syms too.
4605 We really need local syms available to do this
4607 struct ppc_dyn_relocs
*p
;
4608 struct ppc_dyn_relocs
**rel_head
;
4609 bfd_boolean is_ifunc
;
4612 Elf_Internal_Sym
*isym
;
4614 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4619 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4623 vpp
= &elf_section_data (s
)->local_dynrel
;
4624 rel_head
= (struct ppc_dyn_relocs
**) vpp
;
4625 is_ifunc
= ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
;
4627 if (p
!= NULL
&& p
->sec
== sec
&& p
->ifunc
!= is_ifunc
)
4629 if (p
== NULL
|| p
->sec
!= sec
|| p
->ifunc
!= is_ifunc
)
4631 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4634 p
->next
= *rel_head
;
4637 p
->ifunc
= is_ifunc
;
4652 /* Merge object attributes from IBFD into OBFD. Raise an error if
4653 there are conflicting attributes. */
4655 ppc_elf_merge_obj_attributes (bfd
*ibfd
, bfd
*obfd
)
4657 obj_attribute
*in_attr
, *in_attrs
;
4658 obj_attribute
*out_attr
, *out_attrs
;
4660 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
4662 /* This is the first object. Copy the attributes. */
4663 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
4665 /* Use the Tag_null value to indicate the attributes have been
4667 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
4672 in_attrs
= elf_known_obj_attributes (ibfd
)[OBJ_ATTR_GNU
];
4673 out_attrs
= elf_known_obj_attributes (obfd
)[OBJ_ATTR_GNU
];
4675 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4676 non-conflicting ones. */
4677 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_FP
];
4678 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_FP
];
4679 if (in_attr
->i
!= out_attr
->i
)
4682 if (out_attr
->i
== 0)
4683 out_attr
->i
= in_attr
->i
;
4684 else if (in_attr
->i
== 0)
4686 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4688 (_("Warning: %B uses hard float, %B uses soft float"), obfd
, ibfd
);
4689 else if (out_attr
->i
== 1 && in_attr
->i
== 3)
4691 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4693 else if (out_attr
->i
== 3 && in_attr
->i
== 1)
4695 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4697 else if (out_attr
->i
== 3 && in_attr
->i
== 2)
4699 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4701 else if (out_attr
->i
== 2 && (in_attr
->i
== 1 || in_attr
->i
== 3))
4703 (_("Warning: %B uses hard float, %B uses soft float"), ibfd
, obfd
);
4704 else if (in_attr
->i
> 3)
4706 (_("Warning: %B uses unknown floating point ABI %d"), ibfd
,
4710 (_("Warning: %B uses unknown floating point ABI %d"), obfd
,
4714 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4715 merge non-conflicting ones. */
4716 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Vector
];
4717 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Vector
];
4718 if (in_attr
->i
!= out_attr
->i
)
4720 const char *in_abi
= NULL
, *out_abi
= NULL
;
4724 case 1: in_abi
= "generic"; break;
4725 case 2: in_abi
= "AltiVec"; break;
4726 case 3: in_abi
= "SPE"; break;
4729 switch (out_attr
->i
)
4731 case 1: out_abi
= "generic"; break;
4732 case 2: out_abi
= "AltiVec"; break;
4733 case 3: out_abi
= "SPE"; break;
4737 if (out_attr
->i
== 0)
4738 out_attr
->i
= in_attr
->i
;
4739 else if (in_attr
->i
== 0)
4741 /* For now, allow generic to transition to AltiVec or SPE
4742 without a warning. If GCC marked files with their stack
4743 alignment and used don't-care markings for files which are
4744 not affected by the vector ABI, we could warn about this
4746 else if (out_attr
->i
== 1)
4747 out_attr
->i
= in_attr
->i
;
4748 else if (in_attr
->i
== 1)
4750 else if (in_abi
== NULL
)
4752 (_("Warning: %B uses unknown vector ABI %d"), ibfd
,
4754 else if (out_abi
== NULL
)
4756 (_("Warning: %B uses unknown vector ABI %d"), obfd
,
4760 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4761 ibfd
, obfd
, in_abi
, out_abi
);
4764 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4765 and merge non-conflicting ones. */
4766 in_attr
= &in_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4767 out_attr
= &out_attrs
[Tag_GNU_Power_ABI_Struct_Return
];
4768 if (in_attr
->i
!= out_attr
->i
)
4771 if (out_attr
->i
== 0)
4772 out_attr
->i
= in_attr
->i
;
4773 else if (in_attr
->i
== 0)
4775 else if (out_attr
->i
== 1 && in_attr
->i
== 2)
4777 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd
, ibfd
);
4778 else if (out_attr
->i
== 2 && in_attr
->i
== 1)
4780 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd
, obfd
);
4781 else if (in_attr
->i
> 2)
4783 (_("Warning: %B uses unknown small structure return convention %d"), ibfd
,
4787 (_("Warning: %B uses unknown small structure return convention %d"), obfd
,
4791 /* Merge Tag_compatibility attributes and any common GNU ones. */
4792 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
4797 /* Merge backend specific data from an object file to the output
4798 object file when linking. */
4801 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4807 if (!is_ppc_elf (ibfd
) || !is_ppc_elf (obfd
))
4810 /* Check if we have the same endianness. */
4811 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
4814 if (!ppc_elf_merge_obj_attributes (ibfd
, obfd
))
4817 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4818 old_flags
= elf_elfheader (obfd
)->e_flags
;
4819 if (!elf_flags_init (obfd
))
4821 /* First call, no flags set. */
4822 elf_flags_init (obfd
) = TRUE
;
4823 elf_elfheader (obfd
)->e_flags
= new_flags
;
4826 /* Compatible flags are ok. */
4827 else if (new_flags
== old_flags
)
4830 /* Incompatible flags. */
4833 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4834 to be linked with either. */
4836 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
4837 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
4840 (*_bfd_error_handler
)
4841 (_("%B: compiled with -mrelocatable and linked with "
4842 "modules compiled normally"), ibfd
);
4844 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
4845 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
4848 (*_bfd_error_handler
)
4849 (_("%B: compiled normally and linked with "
4850 "modules compiled with -mrelocatable"), ibfd
);
4853 /* The output is -mrelocatable-lib iff both the input files are. */
4854 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
4855 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
4857 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4858 but each input file is either -mrelocatable or -mrelocatable-lib. */
4859 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
4860 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
4861 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
4862 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
4864 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4865 any module uses it. */
4866 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
4868 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4869 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
4871 /* Warn about any other mismatches. */
4872 if (new_flags
!= old_flags
)
4875 (*_bfd_error_handler
)
4876 (_("%B: uses different e_flags (0x%lx) fields "
4877 "than previous modules (0x%lx)"),
4878 ibfd
, (long) new_flags
, (long) old_flags
);
4883 bfd_set_error (bfd_error_bad_value
);
4892 ppc_elf_vle_split16 (bfd
*output_bfd
, bfd_byte
*loc
,
4894 split16_format_type split16_format
)
4897 unsigned int insn
, top5
;
4899 insn
= bfd_get_32 (output_bfd
, loc
);
4900 top5
= value
& 0xf800;
4901 top5
= top5
<< (split16_format
== split16a_type
? 9 : 5);
4903 insn
|= value
& 0x7ff;
4904 bfd_put_32 (output_bfd
, insn
, loc
);
4908 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4909 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4911 ppc_elf_select_plt_layout (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4912 struct bfd_link_info
*info
)
4914 struct ppc_elf_link_hash_table
*htab
;
4917 htab
= ppc_elf_hash_table (info
);
4919 if (htab
->plt_type
== PLT_UNSET
)
4921 struct elf_link_hash_entry
*h
;
4923 if (htab
->params
->plt_style
== PLT_OLD
)
4924 htab
->plt_type
= PLT_OLD
;
4925 else if (bfd_link_pic (info
)
4926 && htab
->elf
.dynamic_sections_created
4927 && (h
= elf_link_hash_lookup (&htab
->elf
, "_mcount",
4928 FALSE
, FALSE
, TRUE
)) != NULL
4929 && (h
->type
== STT_FUNC
4932 && !(SYMBOL_CALLS_LOCAL (info
, h
)
4933 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4934 && h
->root
.type
== bfd_link_hash_undefweak
)))
4936 /* Profiling of shared libs (and pies) is not supported with
4937 secure plt, because ppc32 does profiling before a
4938 function prologue and a secure plt pic call stubs needs
4939 r30 to be set up. */
4940 htab
->plt_type
= PLT_OLD
;
4945 enum ppc_elf_plt_type plt_type
= htab
->params
->plt_style
;
4947 /* Look through the reloc flags left by ppc_elf_check_relocs.
4948 Use the old style bss plt if a file makes plt calls
4949 without using the new relocs, and if ld isn't given
4950 --secure-plt and we never see REL16 relocs. */
4951 if (plt_type
== PLT_UNSET
)
4953 for (ibfd
= info
->input_bfds
; ibfd
; ibfd
= ibfd
->link
.next
)
4954 if (is_ppc_elf (ibfd
))
4956 if (ppc_elf_tdata (ibfd
)->has_rel16
)
4958 else if (ppc_elf_tdata (ibfd
)->makes_plt_call
)
4961 htab
->old_bfd
= ibfd
;
4965 htab
->plt_type
= plt_type
;
4968 if (htab
->plt_type
== PLT_OLD
&& htab
->params
->plt_style
== PLT_NEW
)
4970 if (htab
->old_bfd
!= NULL
)
4971 info
->callbacks
->einfo (_("%P: bss-plt forced due to %B\n"),
4974 info
->callbacks
->einfo (_("%P: bss-plt forced by profiling\n"));
4977 BFD_ASSERT (htab
->plt_type
!= PLT_VXWORKS
);
4979 if (htab
->plt_type
== PLT_NEW
)
4981 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
4982 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4984 /* The new PLT is a loaded section. */
4985 if (htab
->plt
!= NULL
4986 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->plt
, flags
))
4989 /* The new GOT is not executable. */
4990 if (htab
->got
!= NULL
4991 && !bfd_set_section_flags (htab
->elf
.dynobj
, htab
->got
, flags
))
4996 /* Stop an unused .glink section from affecting .text alignment. */
4997 if (htab
->glink
!= NULL
4998 && !bfd_set_section_alignment (htab
->elf
.dynobj
, htab
->glink
, 0))
5001 return htab
->plt_type
== PLT_NEW
;
5004 /* Return the section that should be marked against GC for a given
5008 ppc_elf_gc_mark_hook (asection
*sec
,
5009 struct bfd_link_info
*info
,
5010 Elf_Internal_Rela
*rel
,
5011 struct elf_link_hash_entry
*h
,
5012 Elf_Internal_Sym
*sym
)
5015 switch (ELF32_R_TYPE (rel
->r_info
))
5017 case R_PPC_GNU_VTINHERIT
:
5018 case R_PPC_GNU_VTENTRY
:
5022 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5025 /* Update the got, plt and dynamic reloc reference counts for the
5026 section being removed. */
5029 ppc_elf_gc_sweep_hook (bfd
*abfd
,
5030 struct bfd_link_info
*info
,
5032 const Elf_Internal_Rela
*relocs
)
5034 struct ppc_elf_link_hash_table
*htab
;
5035 Elf_Internal_Shdr
*symtab_hdr
;
5036 struct elf_link_hash_entry
**sym_hashes
;
5037 bfd_signed_vma
*local_got_refcounts
;
5038 const Elf_Internal_Rela
*rel
, *relend
;
5041 if (bfd_link_relocatable (info
))
5044 if ((sec
->flags
& SEC_ALLOC
) == 0)
5047 elf_section_data (sec
)->local_dynrel
= NULL
;
5049 htab
= ppc_elf_hash_table (info
);
5050 symtab_hdr
= &elf_symtab_hdr (abfd
);
5051 sym_hashes
= elf_sym_hashes (abfd
);
5052 local_got_refcounts
= elf_local_got_refcounts (abfd
);
5053 got2
= bfd_get_section_by_name (abfd
, ".got2");
5055 relend
= relocs
+ sec
->reloc_count
;
5056 for (rel
= relocs
; rel
< relend
; rel
++)
5058 unsigned long r_symndx
;
5059 enum elf_ppc_reloc_type r_type
;
5060 struct elf_link_hash_entry
*h
= NULL
;
5062 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5063 if (r_symndx
>= symtab_hdr
->sh_info
)
5065 struct elf_dyn_relocs
**pp
, *p
;
5066 struct ppc_elf_link_hash_entry
*eh
;
5068 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5069 while (h
->root
.type
== bfd_link_hash_indirect
5070 || h
->root
.type
== bfd_link_hash_warning
)
5071 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5072 eh
= (struct ppc_elf_link_hash_entry
*) h
;
5074 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5077 /* Everything must go for SEC. */
5083 r_type
= ELF32_R_TYPE (rel
->r_info
);
5084 if (!htab
->is_vxworks
5086 && local_got_refcounts
!= NULL
5087 && (!bfd_link_pic (info
)
5088 || is_branch_reloc (r_type
)))
5090 struct plt_entry
**local_plt
= (struct plt_entry
**)
5091 (local_got_refcounts
+ symtab_hdr
->sh_info
);
5092 char *local_got_tls_masks
= (char *)
5093 (local_plt
+ symtab_hdr
->sh_info
);
5094 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5096 struct plt_entry
**ifunc
= local_plt
+ r_symndx
;
5098 struct plt_entry
*ent
;
5100 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
5101 addend
= rel
->r_addend
;
5102 ent
= find_plt_ent (ifunc
, got2
, addend
);
5103 if (ent
->plt
.refcount
> 0)
5104 ent
->plt
.refcount
-= 1;
5111 case R_PPC_GOT_TLSLD16
:
5112 case R_PPC_GOT_TLSLD16_LO
:
5113 case R_PPC_GOT_TLSLD16_HI
:
5114 case R_PPC_GOT_TLSLD16_HA
:
5115 case R_PPC_GOT_TLSGD16
:
5116 case R_PPC_GOT_TLSGD16_LO
:
5117 case R_PPC_GOT_TLSGD16_HI
:
5118 case R_PPC_GOT_TLSGD16_HA
:
5119 case R_PPC_GOT_TPREL16
:
5120 case R_PPC_GOT_TPREL16_LO
:
5121 case R_PPC_GOT_TPREL16_HI
:
5122 case R_PPC_GOT_TPREL16_HA
:
5123 case R_PPC_GOT_DTPREL16
:
5124 case R_PPC_GOT_DTPREL16_LO
:
5125 case R_PPC_GOT_DTPREL16_HI
:
5126 case R_PPC_GOT_DTPREL16_HA
:
5128 case R_PPC_GOT16_LO
:
5129 case R_PPC_GOT16_HI
:
5130 case R_PPC_GOT16_HA
:
5133 if (h
->got
.refcount
> 0)
5135 if (!bfd_link_pic (info
))
5137 struct plt_entry
*ent
;
5139 ent
= find_plt_ent (&h
->plt
.plist
, NULL
, 0);
5140 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5141 ent
->plt
.refcount
-= 1;
5144 else if (local_got_refcounts
!= NULL
)
5146 if (local_got_refcounts
[r_symndx
] > 0)
5147 local_got_refcounts
[r_symndx
]--;
5153 case R_PPC_REL14_BRTAKEN
:
5154 case R_PPC_REL14_BRNTAKEN
:
5156 if (h
== NULL
|| h
== htab
->elf
.hgot
)
5163 case R_PPC_ADDR16_LO
:
5164 case R_PPC_ADDR16_HI
:
5165 case R_PPC_ADDR16_HA
:
5167 case R_PPC_ADDR14_BRTAKEN
:
5168 case R_PPC_ADDR14_BRNTAKEN
:
5171 if (bfd_link_pic (info
))
5175 case R_PPC_PLTREL24
:
5176 case R_PPC_PLTREL32
:
5177 case R_PPC_PLT16_LO
:
5178 case R_PPC_PLT16_HI
:
5179 case R_PPC_PLT16_HA
:
5183 struct plt_entry
*ent
;
5185 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
5186 addend
= rel
->r_addend
;
5187 ent
= find_plt_ent (&h
->plt
.plist
, got2
, addend
);
5188 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5189 ent
->plt
.refcount
-= 1;
5200 /* Set plt output section type, htab->tls_get_addr, and call the
5201 generic ELF tls_setup function. */
5204 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5206 struct ppc_elf_link_hash_table
*htab
;
5208 htab
= ppc_elf_hash_table (info
);
5209 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
5210 FALSE
, FALSE
, TRUE
);
5211 if (htab
->plt_type
!= PLT_NEW
)
5212 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5214 if (!htab
->params
->no_tls_get_addr_opt
)
5216 struct elf_link_hash_entry
*opt
, *tga
;
5217 opt
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
5218 FALSE
, FALSE
, TRUE
);
5220 && (opt
->root
.type
== bfd_link_hash_defined
5221 || opt
->root
.type
== bfd_link_hash_defweak
))
5223 /* If glibc supports an optimized __tls_get_addr call stub,
5224 signalled by the presence of __tls_get_addr_opt, and we'll
5225 be calling __tls_get_addr via a plt call stub, then
5226 make __tls_get_addr point to __tls_get_addr_opt. */
5227 tga
= htab
->tls_get_addr
;
5228 if (htab
->elf
.dynamic_sections_created
5230 && (tga
->type
== STT_FUNC
5232 && !(SYMBOL_CALLS_LOCAL (info
, tga
)
5233 || (ELF_ST_VISIBILITY (tga
->other
) != STV_DEFAULT
5234 && tga
->root
.type
== bfd_link_hash_undefweak
)))
5236 struct plt_entry
*ent
;
5237 for (ent
= tga
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5238 if (ent
->plt
.refcount
> 0)
5242 tga
->root
.type
= bfd_link_hash_indirect
;
5243 tga
->root
.u
.i
.link
= &opt
->root
;
5244 ppc_elf_copy_indirect_symbol (info
, opt
, tga
);
5245 opt
->forced_local
= 0;
5246 if (opt
->dynindx
!= -1)
5248 /* Use __tls_get_addr_opt in dynamic relocations. */
5250 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
5252 if (!bfd_elf_link_record_dynamic_symbol (info
, opt
))
5255 htab
->tls_get_addr
= opt
;
5260 htab
->params
->no_tls_get_addr_opt
= TRUE
;
5262 if (htab
->plt_type
== PLT_NEW
5263 && htab
->plt
!= NULL
5264 && htab
->plt
->output_section
!= NULL
)
5266 elf_section_type (htab
->plt
->output_section
) = SHT_PROGBITS
;
5267 elf_section_flags (htab
->plt
->output_section
) = SHF_ALLOC
+ SHF_WRITE
;
5270 return _bfd_elf_tls_setup (obfd
, info
);
5273 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5277 branch_reloc_hash_match (const bfd
*ibfd
,
5278 const Elf_Internal_Rela
*rel
,
5279 const struct elf_link_hash_entry
*hash
)
5281 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5282 enum elf_ppc_reloc_type r_type
= ELF32_R_TYPE (rel
->r_info
);
5283 unsigned int r_symndx
= ELF32_R_SYM (rel
->r_info
);
5285 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
5287 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
5288 struct elf_link_hash_entry
*h
;
5290 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5291 while (h
->root
.type
== bfd_link_hash_indirect
5292 || h
->root
.type
== bfd_link_hash_warning
)
5293 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5300 /* Run through all the TLS relocs looking for optimization
5304 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
5305 struct bfd_link_info
*info
)
5309 struct ppc_elf_link_hash_table
*htab
;
5312 if (!bfd_link_executable (info
))
5315 htab
= ppc_elf_hash_table (info
);
5319 /* Make two passes through the relocs. First time check that tls
5320 relocs involved in setting up a tls_get_addr call are indeed
5321 followed by such a call. If they are not, don't do any tls
5322 optimization. On the second pass twiddle tls_mask flags to
5323 notify relocate_section that optimization can be done, and
5324 adjust got and plt refcounts. */
5325 for (pass
= 0; pass
< 2; ++pass
)
5326 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
5328 Elf_Internal_Sym
*locsyms
= NULL
;
5329 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
5330 asection
*got2
= bfd_get_section_by_name (ibfd
, ".got2");
5332 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5333 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5335 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5336 int expecting_tls_get_addr
= 0;
5338 /* Read the relocations. */
5339 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5341 if (relstart
== NULL
)
5344 relend
= relstart
+ sec
->reloc_count
;
5345 for (rel
= relstart
; rel
< relend
; rel
++)
5347 enum elf_ppc_reloc_type r_type
;
5348 unsigned long r_symndx
;
5349 struct elf_link_hash_entry
*h
= NULL
;
5351 char tls_set
, tls_clear
;
5352 bfd_boolean is_local
;
5353 bfd_signed_vma
*got_count
;
5355 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5356 if (r_symndx
>= symtab_hdr
->sh_info
)
5358 struct elf_link_hash_entry
**sym_hashes
;
5360 sym_hashes
= elf_sym_hashes (ibfd
);
5361 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5362 while (h
->root
.type
== bfd_link_hash_indirect
5363 || h
->root
.type
== bfd_link_hash_warning
)
5364 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5372 r_type
= ELF32_R_TYPE (rel
->r_info
);
5373 /* If this section has old-style __tls_get_addr calls
5374 without marker relocs, then check that each
5375 __tls_get_addr call reloc is preceded by a reloc
5376 that conceivably belongs to the __tls_get_addr arg
5377 setup insn. If we don't find matching arg setup
5378 relocs, don't do any tls optimization. */
5380 && sec
->has_tls_get_addr_call
5382 && h
== htab
->tls_get_addr
5383 && !expecting_tls_get_addr
5384 && is_branch_reloc (r_type
))
5386 info
->callbacks
->minfo ("%H __tls_get_addr lost arg, "
5387 "TLS optimization disabled\n",
5388 ibfd
, sec
, rel
->r_offset
);
5389 if (elf_section_data (sec
)->relocs
!= relstart
)
5394 expecting_tls_get_addr
= 0;
5397 case R_PPC_GOT_TLSLD16
:
5398 case R_PPC_GOT_TLSLD16_LO
:
5399 expecting_tls_get_addr
= 1;
5402 case R_PPC_GOT_TLSLD16_HI
:
5403 case R_PPC_GOT_TLSLD16_HA
:
5404 /* These relocs should never be against a symbol
5405 defined in a shared lib. Leave them alone if
5406 that turns out to be the case. */
5415 case R_PPC_GOT_TLSGD16
:
5416 case R_PPC_GOT_TLSGD16_LO
:
5417 expecting_tls_get_addr
= 1;
5420 case R_PPC_GOT_TLSGD16_HI
:
5421 case R_PPC_GOT_TLSGD16_HA
:
5427 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5431 case R_PPC_GOT_TPREL16
:
5432 case R_PPC_GOT_TPREL16_LO
:
5433 case R_PPC_GOT_TPREL16_HI
:
5434 case R_PPC_GOT_TPREL16_HA
:
5439 tls_clear
= TLS_TPREL
;
5447 expecting_tls_get_addr
= 2;
5458 if (!expecting_tls_get_addr
5459 || (expecting_tls_get_addr
== 1
5460 && !sec
->has_tls_get_addr_call
))
5463 if (rel
+ 1 < relend
5464 && branch_reloc_hash_match (ibfd
, rel
+ 1,
5465 htab
->tls_get_addr
))
5468 /* Uh oh, we didn't find the expected call. We
5469 could just mark this symbol to exclude it
5470 from tls optimization but it's safer to skip
5471 the entire optimization. */
5472 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
5473 "TLS optimization disabled\n"),
5474 ibfd
, sec
, rel
->r_offset
);
5475 if (elf_section_data (sec
)->relocs
!= relstart
)
5480 if (expecting_tls_get_addr
)
5482 struct plt_entry
*ent
;
5485 if (bfd_link_pic (info
)
5486 && ELF32_R_TYPE (rel
[1].r_info
) == R_PPC_PLTREL24
)
5487 addend
= rel
[1].r_addend
;
5488 ent
= find_plt_ent (&htab
->tls_get_addr
->plt
.plist
,
5490 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5491 ent
->plt
.refcount
-= 1;
5493 if (expecting_tls_get_addr
== 2)
5499 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
5500 got_count
= &h
->got
.refcount
;
5504 bfd_signed_vma
*lgot_refs
;
5505 struct plt_entry
**local_plt
;
5508 if (locsyms
== NULL
)
5510 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5511 if (locsyms
== NULL
)
5512 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
5513 symtab_hdr
->sh_info
,
5514 0, NULL
, NULL
, NULL
);
5515 if (locsyms
== NULL
)
5517 if (elf_section_data (sec
)->relocs
!= relstart
)
5522 lgot_refs
= elf_local_got_refcounts (ibfd
);
5523 if (lgot_refs
== NULL
)
5525 local_plt
= (struct plt_entry
**)
5526 (lgot_refs
+ symtab_hdr
->sh_info
);
5527 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
5528 tls_mask
= &lgot_masks
[r_symndx
];
5529 got_count
= &lgot_refs
[r_symndx
];
5534 /* We managed to get rid of a got entry. */
5539 *tls_mask
|= tls_set
;
5540 *tls_mask
&= ~tls_clear
;
5543 if (elf_section_data (sec
)->relocs
!= relstart
)
5548 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
5550 if (!info
->keep_memory
)
5553 symtab_hdr
->contents
= (unsigned char *) locsyms
;
5559 /* Return true if we have dynamic relocs that apply to read-only sections. */
5562 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
5564 struct elf_dyn_relocs
*p
;
5566 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5568 asection
*s
= p
->sec
->output_section
;
5571 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
5572 == (SEC_READONLY
| SEC_ALLOC
)))
5578 /* Adjust a symbol defined by a dynamic object and referenced by a
5579 regular object. The current definition is in some section of the
5580 dynamic object, but we're not including those sections. We have to
5581 change the definition to something the rest of the link can
5585 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5586 struct elf_link_hash_entry
*h
)
5588 struct ppc_elf_link_hash_table
*htab
;
5592 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5593 h
->root
.root
.string
);
5596 /* Make sure we know what is going on here. */
5597 htab
= ppc_elf_hash_table (info
);
5598 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
5600 || h
->type
== STT_GNU_IFUNC
5601 || h
->u
.weakdef
!= NULL
5604 && !h
->def_regular
)));
5606 /* Deal with function syms. */
5607 if (h
->type
== STT_FUNC
5608 || h
->type
== STT_GNU_IFUNC
5611 /* Clear procedure linkage table information for any symbol that
5612 won't need a .plt entry. */
5613 struct plt_entry
*ent
;
5614 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5615 if (ent
->plt
.refcount
> 0)
5618 || (h
->type
!= STT_GNU_IFUNC
5619 && (SYMBOL_CALLS_LOCAL (info
, h
)
5620 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5621 && h
->root
.type
== bfd_link_hash_undefweak
))))
5623 /* A PLT entry is not required/allowed when:
5625 1. We are not using ld.so; because then the PLT entry
5626 can't be set up, so we can't use one. In this case,
5627 ppc_elf_adjust_dynamic_symbol won't even be called.
5629 2. GC has rendered the entry unused.
5631 3. We know for certain that a call to this symbol
5632 will go to this object, or will remain undefined. */
5633 h
->plt
.plist
= NULL
;
5635 h
->pointer_equality_needed
= 0;
5639 /* Taking a function's address in a read/write section
5640 doesn't require us to define the function symbol in the
5641 executable on a plt call stub. A dynamic reloc can
5643 if (h
->pointer_equality_needed
5644 && h
->type
!= STT_GNU_IFUNC
5645 && !htab
->is_vxworks
5646 && !ppc_elf_hash_entry (h
)->has_sda_refs
5647 && !readonly_dynrelocs (h
))
5649 h
->pointer_equality_needed
= 0;
5653 /* After adjust_dynamic_symbol, non_got_ref set in the
5654 non-shared case means that we have allocated space in
5655 .dynbss for the symbol and thus dyn_relocs for this
5656 symbol should be discarded.
5657 If we get here we know we are making a PLT entry for this
5658 symbol, and in an executable we'd normally resolve
5659 relocations against this symbol to the PLT entry. Allow
5660 dynamic relocs if the reference is weak, and the dynamic
5661 relocs will not cause text relocation. */
5662 else if (!h
->ref_regular_nonweak
5664 && h
->type
!= STT_GNU_IFUNC
5665 && !htab
->is_vxworks
5666 && !ppc_elf_hash_entry (h
)->has_sda_refs
5667 && !readonly_dynrelocs (h
))
5670 h
->protected_def
= 0;
5674 h
->plt
.plist
= NULL
;
5676 /* If this is a weak symbol, and there is a real definition, the
5677 processor independent code will have arranged for us to see the
5678 real definition first, and we can just use the same value. */
5679 if (h
->u
.weakdef
!= NULL
)
5681 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5682 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5683 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5684 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5685 if (ELIMINATE_COPY_RELOCS
)
5686 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5690 /* This is a reference to a symbol defined by a dynamic object which
5691 is not a function. */
5693 /* If we are creating a shared library, we must presume that the
5694 only references to the symbol are via the global offset table.
5695 For such cases we need not do anything here; the relocations will
5696 be handled correctly by relocate_section. */
5697 if (bfd_link_pic (info
))
5699 h
->protected_def
= 0;
5703 /* If there are no references to this symbol that do not use the
5704 GOT, we don't need to generate a copy reloc. */
5705 if (!h
->non_got_ref
)
5707 h
->protected_def
= 0;
5711 /* Protected variables do not work with .dynbss. The copy in
5712 .dynbss won't be used by the shared library with the protected
5713 definition for the variable. Editing to PIC, or text relocations
5714 are preferable to an incorrect program. */
5715 if (h
->protected_def
)
5717 if (ELIMINATE_COPY_RELOCS
5718 && ppc_elf_hash_entry (h
)->has_addr16_ha
5719 && ppc_elf_hash_entry (h
)->has_addr16_lo
5720 && htab
->params
->pic_fixup
== 0
5721 && info
->disable_target_specific_optimizations
<= 1)
5722 htab
->params
->pic_fixup
= 1;
5727 /* If -z nocopyreloc was given, we won't generate them either. */
5728 if (info
->nocopyreloc
)
5734 /* If we didn't find any dynamic relocs in read-only sections, then
5735 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5736 We can't do this if there are any small data relocations. This
5737 doesn't work on VxWorks, where we can not have dynamic
5738 relocations (other than copy and jump slot relocations) in an
5740 if (ELIMINATE_COPY_RELOCS
5741 && !ppc_elf_hash_entry (h
)->has_sda_refs
5742 && !htab
->is_vxworks
5744 && !readonly_dynrelocs (h
))
5750 /* We must allocate the symbol in our .dynbss section, which will
5751 become part of the .bss section of the executable. There will be
5752 an entry for this symbol in the .dynsym section. The dynamic
5753 object will contain position independent code, so all references
5754 from the dynamic object to this symbol will go through the global
5755 offset table. The dynamic linker will use the .dynsym entry to
5756 determine the address it must put in the global offset table, so
5757 both the dynamic object and the regular object will refer to the
5758 same memory location for the variable.
5760 Of course, if the symbol is referenced using SDAREL relocs, we
5761 must instead allocate it in .sbss. */
5763 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5767 BFD_ASSERT (s
!= NULL
);
5769 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5770 copy the initial value out of the dynamic object and into the
5771 runtime process image. We need to remember the offset into the
5772 .rela.bss section we are going to use. */
5773 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
5777 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
5778 srel
= htab
->relsbss
;
5780 srel
= htab
->relbss
;
5781 BFD_ASSERT (srel
!= NULL
);
5782 srel
->size
+= sizeof (Elf32_External_Rela
);
5786 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
5789 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5790 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5791 specifying the addend on the plt relocation. For -fpic code, the sym
5792 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5793 xxxxxxxx.got2.plt_pic32.<callee>. */
5796 add_stub_sym (struct plt_entry
*ent
,
5797 struct elf_link_hash_entry
*h
,
5798 struct bfd_link_info
*info
)
5800 struct elf_link_hash_entry
*sh
;
5801 size_t len1
, len2
, len3
;
5804 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
5806 if (bfd_link_pic (info
))
5807 stub
= ".plt_pic32.";
5809 stub
= ".plt_call32.";
5811 len1
= strlen (h
->root
.root
.string
);
5812 len2
= strlen (stub
);
5815 len3
= strlen (ent
->sec
->name
);
5816 name
= bfd_malloc (len1
+ len2
+ len3
+ 9);
5819 sprintf (name
, "%08x", (unsigned) ent
->addend
& 0xffffffff);
5821 memcpy (name
+ 8, ent
->sec
->name
, len3
);
5822 memcpy (name
+ 8 + len3
, stub
, len2
);
5823 memcpy (name
+ 8 + len3
+ len2
, h
->root
.root
.string
, len1
+ 1);
5824 sh
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
5827 if (sh
->root
.type
== bfd_link_hash_new
)
5829 sh
->root
.type
= bfd_link_hash_defined
;
5830 sh
->root
.u
.def
.section
= htab
->glink
;
5831 sh
->root
.u
.def
.value
= ent
->glink_offset
;
5832 sh
->ref_regular
= 1;
5833 sh
->def_regular
= 1;
5834 sh
->ref_regular_nonweak
= 1;
5835 sh
->forced_local
= 1;
5837 sh
->root
.linker_def
= 1;
5842 /* Allocate NEED contiguous space in .got, and return the offset.
5843 Handles allocation of the got header when crossing 32k. */
5846 allocate_got (struct ppc_elf_link_hash_table
*htab
, unsigned int need
)
5849 unsigned int max_before_header
;
5851 if (htab
->plt_type
== PLT_VXWORKS
)
5853 where
= htab
->got
->size
;
5854 htab
->got
->size
+= need
;
5858 max_before_header
= htab
->plt_type
== PLT_NEW
? 32768 : 32764;
5859 if (need
<= htab
->got_gap
)
5861 where
= max_before_header
- htab
->got_gap
;
5862 htab
->got_gap
-= need
;
5866 if (htab
->got
->size
+ need
> max_before_header
5867 && htab
->got
->size
<= max_before_header
)
5869 htab
->got_gap
= max_before_header
- htab
->got
->size
;
5870 htab
->got
->size
= max_before_header
+ htab
->got_header_size
;
5872 where
= htab
->got
->size
;
5873 htab
->got
->size
+= need
;
5879 /* Allocate space in associated reloc sections for dynamic relocs. */
5882 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5884 struct bfd_link_info
*info
= inf
;
5885 struct ppc_elf_link_hash_entry
*eh
;
5886 struct ppc_elf_link_hash_table
*htab
;
5887 struct elf_dyn_relocs
*p
;
5889 if (h
->root
.type
== bfd_link_hash_indirect
)
5892 htab
= ppc_elf_hash_table (info
);
5893 if (htab
->elf
.dynamic_sections_created
5894 || h
->type
== STT_GNU_IFUNC
)
5896 struct plt_entry
*ent
;
5897 bfd_boolean doneone
= FALSE
;
5898 bfd_vma plt_offset
= 0, glink_offset
= 0;
5901 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5902 if (ent
->plt
.refcount
> 0)
5904 /* Make sure this symbol is output as a dynamic symbol. */
5905 if (h
->dynindx
== -1
5908 && htab
->elf
.dynamic_sections_created
)
5910 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
5914 dyn
= htab
->elf
.dynamic_sections_created
;
5915 if (bfd_link_pic (info
)
5916 || h
->type
== STT_GNU_IFUNC
5917 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
5919 asection
*s
= htab
->plt
;
5920 if (!dyn
|| h
->dynindx
== -1)
5923 if (htab
->plt_type
== PLT_NEW
|| !dyn
|| h
->dynindx
== -1)
5927 plt_offset
= s
->size
;
5930 ent
->plt
.offset
= plt_offset
;
5933 if (!doneone
|| bfd_link_pic (info
))
5935 glink_offset
= s
->size
;
5936 s
->size
+= GLINK_ENTRY_SIZE
;
5937 if (h
== htab
->tls_get_addr
5938 && !htab
->params
->no_tls_get_addr_opt
)
5939 s
->size
+= TLS_GET_ADDR_GLINK_SIZE
- GLINK_ENTRY_SIZE
;
5942 && !bfd_link_pic (info
)
5946 h
->root
.u
.def
.section
= s
;
5947 h
->root
.u
.def
.value
= glink_offset
;
5949 ent
->glink_offset
= glink_offset
;
5951 if (htab
->params
->emit_stub_syms
5952 && !add_stub_sym (ent
, h
, info
))
5959 /* If this is the first .plt entry, make room
5960 for the special first entry. */
5962 s
->size
+= htab
->plt_initial_entry_size
;
5964 /* The PowerPC PLT is actually composed of two
5965 parts, the first part is 2 words (for a load
5966 and a jump), and then there is a remaining
5967 word available at the end. */
5968 plt_offset
= (htab
->plt_initial_entry_size
5969 + (htab
->plt_slot_size
5971 - htab
->plt_initial_entry_size
)
5972 / htab
->plt_entry_size
)));
5974 /* If this symbol is not defined in a regular
5975 file, and we are not generating a shared
5976 library, then set the symbol to this location
5977 in the .plt. This is to avoid text
5978 relocations, and is required to make
5979 function pointers compare as equal between
5980 the normal executable and the shared library. */
5981 if (! bfd_link_pic (info
)
5985 h
->root
.u
.def
.section
= s
;
5986 h
->root
.u
.def
.value
= plt_offset
;
5989 /* Make room for this entry. */
5990 s
->size
+= htab
->plt_entry_size
;
5991 /* After the 8192nd entry, room for two entries
5993 if (htab
->plt_type
== PLT_OLD
5994 && (s
->size
- htab
->plt_initial_entry_size
)
5995 / htab
->plt_entry_size
5996 > PLT_NUM_SINGLE_ENTRIES
)
5997 s
->size
+= htab
->plt_entry_size
;
5999 ent
->plt
.offset
= plt_offset
;
6002 /* We also need to make an entry in the .rela.plt section. */
6005 if (!htab
->elf
.dynamic_sections_created
6006 || h
->dynindx
== -1)
6007 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
6010 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
6012 if (htab
->plt_type
== PLT_VXWORKS
)
6014 /* Allocate space for the unloaded relocations. */
6015 if (!bfd_link_pic (info
)
6016 && htab
->elf
.dynamic_sections_created
)
6019 == (bfd_vma
) htab
->plt_initial_entry_size
)
6021 htab
->srelplt2
->size
6022 += (sizeof (Elf32_External_Rela
)
6023 * VXWORKS_PLTRESOLVE_RELOCS
);
6026 htab
->srelplt2
->size
6027 += (sizeof (Elf32_External_Rela
)
6028 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
);
6031 /* Every PLT entry has an associated GOT entry in
6033 htab
->sgotplt
->size
+= 4;
6040 ent
->plt
.offset
= (bfd_vma
) -1;
6043 ent
->plt
.offset
= (bfd_vma
) -1;
6047 h
->plt
.plist
= NULL
;
6053 h
->plt
.plist
= NULL
;
6057 eh
= (struct ppc_elf_link_hash_entry
*) h
;
6058 if (eh
->elf
.got
.refcount
> 0
6059 || (ELIMINATE_COPY_RELOCS
6060 && !eh
->elf
.def_regular
6061 && eh
->elf
.protected_def
6062 && eh
->has_addr16_ha
6063 && eh
->has_addr16_lo
6064 && htab
->params
->pic_fixup
> 0))
6069 /* Make sure this symbol is output as a dynamic symbol. */
6070 if (eh
->elf
.dynindx
== -1
6071 && !eh
->elf
.forced_local
6072 && eh
->elf
.type
!= STT_GNU_IFUNC
6073 && htab
->elf
.dynamic_sections_created
)
6075 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
6080 if ((eh
->tls_mask
& TLS_TLS
) != 0)
6082 if ((eh
->tls_mask
& TLS_LD
) != 0)
6084 if (!eh
->elf
.def_dynamic
)
6085 /* We'll just use htab->tlsld_got.offset. This should
6086 always be the case. It's a little odd if we have
6087 a local dynamic reloc against a non-local symbol. */
6088 htab
->tlsld_got
.refcount
+= 1;
6092 if ((eh
->tls_mask
& TLS_GD
) != 0)
6094 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6096 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
6102 eh
->elf
.got
.offset
= (bfd_vma
) -1;
6105 eh
->elf
.got
.offset
= allocate_got (htab
, need
);
6106 dyn
= htab
->elf
.dynamic_sections_created
;
6107 if ((bfd_link_pic (info
)
6108 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
6109 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
6110 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
6112 asection
*rsec
= htab
->relgot
;
6114 if (eh
->elf
.type
== STT_GNU_IFUNC
)
6115 rsec
= htab
->reliplt
;
6116 /* All the entries we allocated need relocs.
6117 Except LD only needs one. */
6118 if ((eh
->tls_mask
& TLS_LD
) != 0
6119 && eh
->elf
.def_dynamic
)
6121 rsec
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
6126 eh
->elf
.got
.offset
= (bfd_vma
) -1;
6128 if (eh
->dyn_relocs
== NULL
6129 || !htab
->elf
.dynamic_sections_created
)
6132 /* In the shared -Bsymbolic case, discard space allocated for
6133 dynamic pc-relative relocs against symbols which turn out to be
6134 defined in regular objects. For the normal shared case, discard
6135 space for relocs that have become local due to symbol visibility
6138 if (bfd_link_pic (info
))
6140 /* Relocs that use pc_count are those that appear on a call insn,
6141 or certain REL relocs (see must_be_dyn_reloc) that can be
6142 generated via assembly. We want calls to protected symbols to
6143 resolve directly to the function rather than going via the plt.
6144 If people want function pointer comparisons to work as expected
6145 then they should avoid writing weird assembly. */
6146 if (SYMBOL_CALLS_LOCAL (info
, h
))
6148 struct elf_dyn_relocs
**pp
;
6150 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6152 p
->count
-= p
->pc_count
;
6161 if (htab
->is_vxworks
)
6163 struct elf_dyn_relocs
**pp
;
6165 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
6167 if (strcmp (p
->sec
->output_section
->name
, ".tls_vars") == 0)
6174 /* Discard relocs on undefined symbols that must be local. */
6175 if (eh
->dyn_relocs
!= NULL
6176 && h
->root
.type
== bfd_link_hash_undefined
6177 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
6178 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
6179 eh
->dyn_relocs
= NULL
;
6181 /* Also discard relocs on undefined weak syms with non-default
6183 if (eh
->dyn_relocs
!= NULL
6184 && h
->root
.type
== bfd_link_hash_undefweak
)
6186 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
6187 eh
->dyn_relocs
= NULL
;
6189 /* Make sure undefined weak symbols are output as a dynamic
6191 else if (h
->dynindx
== -1
6195 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6200 else if (ELIMINATE_COPY_RELOCS
)
6202 /* For the non-shared case, discard space for relocs against
6203 symbols which turn out to need copy relocs or are not
6208 && !(h
->protected_def
6209 && eh
->has_addr16_ha
6210 && eh
->has_addr16_lo
6211 && htab
->params
->pic_fixup
> 0))
6213 /* Make sure this symbol is output as a dynamic symbol.
6214 Undefined weak syms won't yet be marked as dynamic. */
6215 if (h
->dynindx
== -1
6216 && !h
->forced_local
)
6218 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
6222 /* If that succeeded, we know we'll be keeping all the
6224 if (h
->dynindx
!= -1)
6228 eh
->dyn_relocs
= NULL
;
6233 /* Finally, allocate space. */
6234 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6236 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6237 if (eh
->elf
.type
== STT_GNU_IFUNC
)
6238 sreloc
= htab
->reliplt
;
6239 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6245 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6246 read-only sections. */
6249 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info
)
6251 if (h
->root
.type
== bfd_link_hash_indirect
)
6254 if (readonly_dynrelocs (h
))
6256 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
6258 /* Not an error, just cut short the traversal. */
6264 static const unsigned char glink_eh_frame_cie
[] =
6266 0, 0, 0, 16, /* length. */
6267 0, 0, 0, 0, /* id. */
6268 1, /* CIE version. */
6269 'z', 'R', 0, /* Augmentation string. */
6270 4, /* Code alignment. */
6271 0x7c, /* Data alignment. */
6273 1, /* Augmentation size. */
6274 DW_EH_PE_pcrel
| DW_EH_PE_sdata4
, /* FDE encoding. */
6275 DW_CFA_def_cfa
, 1, 0 /* def_cfa: r1 offset 0. */
6278 /* Set the sizes of the dynamic sections. */
6281 ppc_elf_size_dynamic_sections (bfd
*output_bfd
,
6282 struct bfd_link_info
*info
)
6284 struct ppc_elf_link_hash_table
*htab
;
6290 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
6293 htab
= ppc_elf_hash_table (info
);
6294 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
6296 if (elf_hash_table (info
)->dynamic_sections_created
)
6298 /* Set the contents of the .interp section to the interpreter. */
6299 if (bfd_link_executable (info
) && !info
->nointerp
)
6301 s
= bfd_get_linker_section (htab
->elf
.dynobj
, ".interp");
6302 BFD_ASSERT (s
!= NULL
);
6303 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
6304 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
6308 if (htab
->plt_type
== PLT_OLD
)
6309 htab
->got_header_size
= 16;
6310 else if (htab
->plt_type
== PLT_NEW
)
6311 htab
->got_header_size
= 12;
6313 /* Set up .got offsets for local syms, and space for local dynamic
6315 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
6317 bfd_signed_vma
*local_got
;
6318 bfd_signed_vma
*end_local_got
;
6319 struct plt_entry
**local_plt
;
6320 struct plt_entry
**end_local_plt
;
6322 bfd_size_type locsymcount
;
6323 Elf_Internal_Shdr
*symtab_hdr
;
6325 if (!is_ppc_elf (ibfd
))
6328 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
6330 struct ppc_dyn_relocs
*p
;
6332 for (p
= ((struct ppc_dyn_relocs
*)
6333 elf_section_data (s
)->local_dynrel
);
6337 if (!bfd_is_abs_section (p
->sec
)
6338 && bfd_is_abs_section (p
->sec
->output_section
))
6340 /* Input section has been discarded, either because
6341 it is a copy of a linkonce section or due to
6342 linker script /DISCARD/, so we'll be discarding
6345 else if (htab
->is_vxworks
6346 && strcmp (p
->sec
->output_section
->name
,
6349 /* Relocations in vxworks .tls_vars sections are
6350 handled specially by the loader. */
6352 else if (p
->count
!= 0)
6354 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
6356 sreloc
= htab
->reliplt
;
6357 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
6358 if ((p
->sec
->output_section
->flags
6359 & (SEC_READONLY
| SEC_ALLOC
))
6360 == (SEC_READONLY
| SEC_ALLOC
))
6361 info
->flags
|= DF_TEXTREL
;
6366 local_got
= elf_local_got_refcounts (ibfd
);
6370 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6371 locsymcount
= symtab_hdr
->sh_info
;
6372 end_local_got
= local_got
+ locsymcount
;
6373 local_plt
= (struct plt_entry
**) end_local_got
;
6374 end_local_plt
= local_plt
+ locsymcount
;
6375 lgot_masks
= (char *) end_local_plt
;
6377 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
6380 unsigned int need
= 0;
6381 if ((*lgot_masks
& TLS_TLS
) != 0)
6383 if ((*lgot_masks
& TLS_GD
) != 0)
6385 if ((*lgot_masks
& TLS_LD
) != 0)
6386 htab
->tlsld_got
.refcount
+= 1;
6387 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
6389 if ((*lgot_masks
& TLS_DTPREL
) != 0)
6395 *local_got
= (bfd_vma
) -1;
6398 *local_got
= allocate_got (htab
, need
);
6399 if (bfd_link_pic (info
))
6401 asection
*srel
= htab
->relgot
;
6402 if ((*lgot_masks
& PLT_IFUNC
) != 0)
6403 srel
= htab
->reliplt
;
6404 srel
->size
+= need
* (sizeof (Elf32_External_Rela
) / 4);
6409 *local_got
= (bfd_vma
) -1;
6411 if (htab
->is_vxworks
)
6414 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6415 for (; local_plt
< end_local_plt
; ++local_plt
)
6417 struct plt_entry
*ent
;
6418 bfd_boolean doneone
= FALSE
;
6419 bfd_vma plt_offset
= 0, glink_offset
= 0;
6421 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
6422 if (ent
->plt
.refcount
> 0)
6428 plt_offset
= s
->size
;
6431 ent
->plt
.offset
= plt_offset
;
6434 if (!doneone
|| bfd_link_pic (info
))
6436 glink_offset
= s
->size
;
6437 s
->size
+= GLINK_ENTRY_SIZE
;
6439 ent
->glink_offset
= glink_offset
;
6443 htab
->reliplt
->size
+= sizeof (Elf32_External_Rela
);
6448 ent
->plt
.offset
= (bfd_vma
) -1;
6452 /* Allocate space for global sym dynamic relocs. */
6453 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
6455 if (htab
->tlsld_got
.refcount
> 0)
6457 htab
->tlsld_got
.offset
= allocate_got (htab
, 8);
6458 if (bfd_link_pic (info
))
6459 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
6462 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
6464 if (htab
->got
!= NULL
&& htab
->plt_type
!= PLT_VXWORKS
)
6466 unsigned int g_o_t
= 32768;
6468 /* If we haven't allocated the header, do so now. When we get here,
6469 for old plt/got the got size will be 0 to 32764 (not allocated),
6470 or 32780 to 65536 (header allocated). For new plt/got, the
6471 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6472 if (htab
->got
->size
<= 32768)
6474 g_o_t
= htab
->got
->size
;
6475 if (htab
->plt_type
== PLT_OLD
)
6477 htab
->got
->size
+= htab
->got_header_size
;
6480 htab
->elf
.hgot
->root
.u
.def
.value
= g_o_t
;
6482 if (bfd_link_pic (info
))
6484 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6486 sda
->root
.u
.def
.section
= htab
->elf
.hgot
->root
.u
.def
.section
;
6487 sda
->root
.u
.def
.value
= htab
->elf
.hgot
->root
.u
.def
.value
;
6489 if (info
->emitrelocations
)
6491 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
6493 if (sda
!= NULL
&& sda
->ref_regular
)
6494 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6495 sda
= htab
->sdata
[1].sym
;
6496 if (sda
!= NULL
&& sda
->ref_regular
)
6497 sda
->root
.u
.def
.section
->flags
|= SEC_KEEP
;
6500 if (htab
->glink
!= NULL
6501 && htab
->glink
->size
!= 0
6502 && htab
->elf
.dynamic_sections_created
)
6504 htab
->glink_pltresolve
= htab
->glink
->size
;
6505 /* Space for the branch table. */
6506 htab
->glink
->size
+= htab
->glink
->size
/ (GLINK_ENTRY_SIZE
/ 4) - 4;
6507 /* Pad out to align the start of PLTresolve. */
6508 htab
->glink
->size
+= -htab
->glink
->size
& (htab
->params
->ppc476_workaround
6510 htab
->glink
->size
+= GLINK_PLTRESOLVE
;
6512 if (htab
->params
->emit_stub_syms
)
6514 struct elf_link_hash_entry
*sh
;
6515 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink",
6516 TRUE
, FALSE
, FALSE
);
6519 if (sh
->root
.type
== bfd_link_hash_new
)
6521 sh
->root
.type
= bfd_link_hash_defined
;
6522 sh
->root
.u
.def
.section
= htab
->glink
;
6523 sh
->root
.u
.def
.value
= htab
->glink_pltresolve
;
6524 sh
->ref_regular
= 1;
6525 sh
->def_regular
= 1;
6526 sh
->ref_regular_nonweak
= 1;
6527 sh
->forced_local
= 1;
6529 sh
->root
.linker_def
= 1;
6531 sh
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
6532 TRUE
, FALSE
, FALSE
);
6535 if (sh
->root
.type
== bfd_link_hash_new
)
6537 sh
->root
.type
= bfd_link_hash_defined
;
6538 sh
->root
.u
.def
.section
= htab
->glink
;
6539 sh
->root
.u
.def
.value
= htab
->glink
->size
- GLINK_PLTRESOLVE
;
6540 sh
->ref_regular
= 1;
6541 sh
->def_regular
= 1;
6542 sh
->ref_regular_nonweak
= 1;
6543 sh
->forced_local
= 1;
6545 sh
->root
.linker_def
= 1;
6550 if (htab
->glink
!= NULL
6551 && htab
->glink
->size
!= 0
6552 && htab
->glink_eh_frame
!= NULL
6553 && !bfd_is_abs_section (htab
->glink_eh_frame
->output_section
)
6554 && _bfd_elf_eh_frame_present (info
))
6556 s
= htab
->glink_eh_frame
;
6557 s
->size
= sizeof (glink_eh_frame_cie
) + 20;
6558 if (bfd_link_pic (info
))
6561 if (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8 >= 256)
6566 /* We've now determined the sizes of the various dynamic sections.
6567 Allocate memory for them. */
6569 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
6571 bfd_boolean strip_section
= TRUE
;
6573 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
6579 /* We'd like to strip these sections if they aren't needed, but if
6580 we've exported dynamic symbols from them we must leave them.
6581 It's too late to tell BFD to get rid of the symbols. */
6582 if (htab
->elf
.hplt
!= NULL
)
6583 strip_section
= FALSE
;
6584 /* Strip this section if we don't need it; see the
6587 else if (s
== htab
->iplt
6589 || s
== htab
->glink_eh_frame
6590 || s
== htab
->sgotplt
6592 || s
== htab
->dynbss
6593 || s
== htab
->dynsbss
)
6595 /* Strip these too. */
6597 else if (s
== htab
->sdata
[0].section
6598 || s
== htab
->sdata
[1].section
)
6600 strip_section
= (s
->flags
& SEC_KEEP
) == 0;
6602 else if (CONST_STRNEQ (bfd_get_section_name (htab
->elf
.dynobj
, s
),
6607 /* Remember whether there are any relocation sections. */
6610 /* We use the reloc_count field as a counter if we need
6611 to copy relocs into the output file. */
6617 /* It's not one of our sections, so don't allocate space. */
6621 if (s
->size
== 0 && strip_section
)
6623 /* If we don't need this section, strip it from the
6624 output file. This is mostly to handle .rela.bss and
6625 .rela.plt. We must create both sections in
6626 create_dynamic_sections, because they must be created
6627 before the linker maps input sections to output
6628 sections. The linker does that before
6629 adjust_dynamic_symbol is called, and it is that
6630 function which decides whether anything needs to go
6631 into these sections. */
6632 s
->flags
|= SEC_EXCLUDE
;
6636 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
6639 /* Allocate memory for the section contents. */
6640 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
6641 if (s
->contents
== NULL
)
6645 if (htab
->elf
.dynamic_sections_created
)
6647 /* Add some entries to the .dynamic section. We fill in the
6648 values later, in ppc_elf_finish_dynamic_sections, but we
6649 must add the entries now so that we get the correct size for
6650 the .dynamic section. The DT_DEBUG entry is filled in by the
6651 dynamic linker and used by the debugger. */
6652 #define add_dynamic_entry(TAG, VAL) \
6653 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6655 if (bfd_link_executable (info
))
6657 if (!add_dynamic_entry (DT_DEBUG
, 0))
6661 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
6663 if (!add_dynamic_entry (DT_PLTGOT
, 0)
6664 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
6665 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
6666 || !add_dynamic_entry (DT_JMPREL
, 0))
6670 if (htab
->plt_type
== PLT_NEW
6671 && htab
->glink
!= NULL
6672 && htab
->glink
->size
!= 0)
6674 if (!add_dynamic_entry (DT_PPC_GOT
, 0))
6676 if (!htab
->params
->no_tls_get_addr_opt
6677 && htab
->tls_get_addr
!= NULL
6678 && htab
->tls_get_addr
->plt
.plist
!= NULL
6679 && !add_dynamic_entry (DT_PPC_OPT
, PPC_OPT_TLS
))
6685 if (!add_dynamic_entry (DT_RELA
, 0)
6686 || !add_dynamic_entry (DT_RELASZ
, 0)
6687 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
6691 /* If any dynamic relocs apply to a read-only section, then we
6692 need a DT_TEXTREL entry. */
6693 if ((info
->flags
& DF_TEXTREL
) == 0)
6694 elf_link_hash_traverse (elf_hash_table (info
), maybe_set_textrel
,
6697 if ((info
->flags
& DF_TEXTREL
) != 0)
6699 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6702 if (htab
->is_vxworks
6703 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
6706 #undef add_dynamic_entry
6708 if (htab
->glink_eh_frame
!= NULL
6709 && htab
->glink_eh_frame
->contents
!= NULL
)
6711 unsigned char *p
= htab
->glink_eh_frame
->contents
;
6714 memcpy (p
, glink_eh_frame_cie
, sizeof (glink_eh_frame_cie
));
6715 /* CIE length (rewrite in case little-endian). */
6716 bfd_put_32 (htab
->elf
.dynobj
, sizeof (glink_eh_frame_cie
) - 4, p
);
6717 p
+= sizeof (glink_eh_frame_cie
);
6719 val
= htab
->glink_eh_frame
->size
- 4 - sizeof (glink_eh_frame_cie
);
6720 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6723 val
= p
- htab
->glink_eh_frame
->contents
;
6724 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
6726 /* Offset to .glink. Set later. */
6729 bfd_put_32 (htab
->elf
.dynobj
, htab
->glink
->size
, p
);
6734 if (bfd_link_pic (info
)
6735 && htab
->elf
.dynamic_sections_created
)
6737 bfd_vma adv
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 8) >> 2;
6739 *p
++ = DW_CFA_advance_loc
+ adv
;
6742 *p
++ = DW_CFA_advance_loc1
;
6745 else if (adv
< 65536)
6747 *p
++ = DW_CFA_advance_loc2
;
6748 bfd_put_16 (htab
->elf
.dynobj
, adv
, p
);
6753 *p
++ = DW_CFA_advance_loc4
;
6754 bfd_put_32 (htab
->elf
.dynobj
, adv
, p
);
6757 *p
++ = DW_CFA_register
;
6760 *p
++ = DW_CFA_advance_loc
+ 4;
6761 *p
++ = DW_CFA_restore_extended
;
6764 BFD_ASSERT ((bfd_vma
) ((p
+ 3 - htab
->glink_eh_frame
->contents
) & -4)
6765 == htab
->glink_eh_frame
->size
);
6771 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6772 if it looks like nothing is using them. */
6775 maybe_strip_sdasym (bfd
*output_bfd
, elf_linker_section_t
*lsect
)
6777 struct elf_link_hash_entry
*sda
= lsect
->sym
;
6779 if (sda
!= NULL
&& !sda
->ref_regular
&& sda
->dynindx
== -1)
6783 s
= bfd_get_section_by_name (output_bfd
, lsect
->name
);
6784 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6786 s
= bfd_get_section_by_name (output_bfd
, lsect
->bss_name
);
6787 if (s
== NULL
|| bfd_section_removed_from_list (output_bfd
, s
))
6789 sda
->def_regular
= 0;
6790 /* This is somewhat magic. See elf_link_output_extsym. */
6791 sda
->ref_dynamic
= 1;
6792 sda
->forced_local
= 0;
6799 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info
*info
)
6801 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
6805 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[0]);
6806 maybe_strip_sdasym (info
->output_bfd
, &htab
->sdata
[1]);
6811 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6814 ppc_elf_hash_symbol (struct elf_link_hash_entry
*h
)
6816 if (h
->plt
.plist
!= NULL
6818 && (!h
->pointer_equality_needed
6819 || !h
->ref_regular_nonweak
))
6822 return _bfd_elf_hash_symbol (h
);
6825 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6827 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6828 used for some functions that are allowed to break the ABI). */
6829 static const int shared_stub_entry
[] =
6831 0x7c0802a6, /* mflr 0 */
6832 0x429f0005, /* bcl 20, 31, .Lxxx */
6833 0x7d8802a6, /* mflr 12 */
6834 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6835 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6836 0x7c0803a6, /* mtlr 0 */
6837 0x7d8903a6, /* mtctr 12 */
6838 0x4e800420, /* bctr */
6841 static const int stub_entry
[] =
6843 0x3d800000, /* lis 12,xxx@ha */
6844 0x398c0000, /* addi 12,12,xxx@l */
6845 0x7d8903a6, /* mtctr 12 */
6846 0x4e800420, /* bctr */
6849 struct ppc_elf_relax_info
6851 unsigned int workaround_size
;
6852 unsigned int picfixup_size
;
6855 /* This function implements long branch trampolines, and the ppc476
6856 icache bug workaround. Any section needing trampolines or patch
6857 space for the workaround has its size extended so that we can
6858 add trampolines at the end of the section. */
6861 ppc_elf_relax_section (bfd
*abfd
,
6863 struct bfd_link_info
*link_info
,
6866 struct one_branch_fixup
6868 struct one_branch_fixup
*next
;
6870 /* Final link, can use the symbol offset. For a
6871 relocatable link we use the symbol's index. */
6876 Elf_Internal_Shdr
*symtab_hdr
;
6877 bfd_byte
*contents
= NULL
;
6878 Elf_Internal_Sym
*isymbuf
= NULL
;
6879 Elf_Internal_Rela
*internal_relocs
= NULL
;
6880 Elf_Internal_Rela
*irel
, *irelend
= NULL
;
6881 struct one_branch_fixup
*branch_fixups
= NULL
;
6882 struct ppc_elf_relax_info
*relax_info
= NULL
;
6883 unsigned changes
= 0;
6884 bfd_boolean workaround_change
;
6885 struct ppc_elf_link_hash_table
*htab
;
6886 bfd_size_type trampbase
, trampoff
, newsize
, picfixup_size
;
6888 bfd_boolean maybe_pasted
;
6892 /* No need to do anything with non-alloc or non-code sections. */
6893 if ((isec
->flags
& SEC_ALLOC
) == 0
6894 || (isec
->flags
& SEC_CODE
) == 0
6895 || (isec
->flags
& SEC_LINKER_CREATED
) != 0
6899 /* We cannot represent the required PIC relocs in the output, so don't
6900 do anything. The linker doesn't support mixing -shared and -r
6902 if (bfd_link_relocatable (link_info
) && bfd_link_pic (link_info
))
6905 htab
= ppc_elf_hash_table (link_info
);
6909 isec
->size
= (isec
->size
+ 3) & -4;
6910 if (isec
->rawsize
== 0)
6911 isec
->rawsize
= isec
->size
;
6912 trampbase
= isec
->size
;
6914 BFD_ASSERT (isec
->sec_info_type
== SEC_INFO_TYPE_NONE
6915 || isec
->sec_info_type
== SEC_INFO_TYPE_TARGET
);
6916 isec
->sec_info_type
= SEC_INFO_TYPE_TARGET
;
6918 if (htab
->params
->ppc476_workaround
6919 || htab
->params
->pic_fixup
> 0)
6921 if (elf_section_data (isec
)->sec_info
== NULL
)
6923 elf_section_data (isec
)->sec_info
6924 = bfd_zalloc (abfd
, sizeof (struct ppc_elf_relax_info
));
6925 if (elf_section_data (isec
)->sec_info
== NULL
)
6928 relax_info
= elf_section_data (isec
)->sec_info
;
6929 trampbase
-= relax_info
->workaround_size
;
6932 maybe_pasted
= (strcmp (isec
->output_section
->name
, ".init") == 0
6933 || strcmp (isec
->output_section
->name
, ".fini") == 0);
6934 /* Space for a branch around any trampolines. */
6935 trampoff
= trampbase
;
6936 if (maybe_pasted
&& trampbase
== isec
->rawsize
)
6939 symtab_hdr
= &elf_symtab_hdr (abfd
);
6941 if (htab
->params
->branch_trampolines
6942 || htab
->params
->pic_fixup
> 0)
6944 /* Get a copy of the native relocations. */
6945 if (isec
->reloc_count
!= 0)
6947 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
6948 link_info
->keep_memory
);
6949 if (internal_relocs
== NULL
)
6953 got2
= bfd_get_section_by_name (abfd
, ".got2");
6955 irelend
= internal_relocs
+ isec
->reloc_count
;
6956 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
6958 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
6961 struct one_branch_fixup
*f
;
6962 size_t insn_offset
= 0;
6963 bfd_vma max_branch_offset
= 0, val
;
6966 struct elf_link_hash_entry
*h
;
6967 struct plt_entry
**plist
;
6968 unsigned char sym_type
;
6973 case R_PPC_LOCAL24PC
:
6974 case R_PPC_PLTREL24
:
6975 max_branch_offset
= 1 << 25;
6979 case R_PPC_REL14_BRTAKEN
:
6980 case R_PPC_REL14_BRNTAKEN
:
6981 max_branch_offset
= 1 << 15;
6984 case R_PPC_ADDR16_HA
:
6985 if (htab
->params
->pic_fixup
> 0)
6993 /* Get the value of the symbol referred to by the reloc. */
6995 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6997 /* A local symbol. */
6998 Elf_Internal_Sym
*isym
;
7000 /* Read this BFD's local symbols. */
7001 if (isymbuf
== NULL
)
7003 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
7004 if (isymbuf
== NULL
)
7005 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
7006 symtab_hdr
->sh_info
, 0,
7011 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
7012 if (isym
->st_shndx
== SHN_UNDEF
)
7013 tsec
= bfd_und_section_ptr
;
7014 else if (isym
->st_shndx
== SHN_ABS
)
7015 tsec
= bfd_abs_section_ptr
;
7016 else if (isym
->st_shndx
== SHN_COMMON
)
7017 tsec
= bfd_com_section_ptr
;
7019 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
7021 toff
= isym
->st_value
;
7022 sym_type
= ELF_ST_TYPE (isym
->st_info
);
7026 /* Global symbol handling. */
7029 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
7030 h
= elf_sym_hashes (abfd
)[indx
];
7032 while (h
->root
.type
== bfd_link_hash_indirect
7033 || h
->root
.type
== bfd_link_hash_warning
)
7034 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7036 if (h
->root
.type
== bfd_link_hash_defined
7037 || h
->root
.type
== bfd_link_hash_defweak
)
7039 tsec
= h
->root
.u
.def
.section
;
7040 toff
= h
->root
.u
.def
.value
;
7042 else if (h
->root
.type
== bfd_link_hash_undefined
7043 || h
->root
.type
== bfd_link_hash_undefweak
)
7045 tsec
= bfd_und_section_ptr
;
7046 toff
= bfd_link_relocatable (link_info
) ? indx
: 0;
7051 /* If this branch is to __tls_get_addr then we may later
7052 optimise away the call. We won't be needing a long-
7053 branch stub in that case. */
7054 if (bfd_link_executable (link_info
)
7055 && h
== htab
->tls_get_addr
7056 && irel
!= internal_relocs
)
7058 unsigned long t_symndx
= ELF32_R_SYM (irel
[-1].r_info
);
7059 unsigned long t_rtype
= ELF32_R_TYPE (irel
[-1].r_info
);
7060 unsigned int tls_mask
= 0;
7062 /* The previous reloc should be one of R_PPC_TLSGD or
7063 R_PPC_TLSLD, or for older object files, a reloc
7064 on the __tls_get_addr arg setup insn. Get tls
7065 mask bits from the symbol on that reloc. */
7066 if (t_symndx
< symtab_hdr
->sh_info
)
7068 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7070 if (local_got_offsets
!= NULL
)
7072 struct plt_entry
**local_plt
= (struct plt_entry
**)
7073 (local_got_offsets
+ symtab_hdr
->sh_info
);
7074 char *lgot_masks
= (char *)
7075 (local_plt
+ symtab_hdr
->sh_info
);
7076 tls_mask
= lgot_masks
[t_symndx
];
7081 struct elf_link_hash_entry
*th
7082 = elf_sym_hashes (abfd
)[t_symndx
- symtab_hdr
->sh_info
];
7084 while (th
->root
.type
== bfd_link_hash_indirect
7085 || th
->root
.type
== bfd_link_hash_warning
)
7086 th
= (struct elf_link_hash_entry
*) th
->root
.u
.i
.link
;
7089 = ((struct ppc_elf_link_hash_entry
*) th
)->tls_mask
;
7092 /* The mask bits tell us if the call will be
7094 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0
7095 && (t_rtype
== R_PPC_TLSGD
7096 || t_rtype
== R_PPC_GOT_TLSGD16
7097 || t_rtype
== R_PPC_GOT_TLSGD16_LO
))
7099 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0
7100 && (t_rtype
== R_PPC_TLSLD
7101 || t_rtype
== R_PPC_GOT_TLSLD16
7102 || t_rtype
== R_PPC_GOT_TLSLD16_LO
))
7109 if (r_type
== R_PPC_ADDR16_HA
)
7114 && ppc_elf_hash_entry (h
)->has_addr16_ha
7115 && ppc_elf_hash_entry (h
)->has_addr16_lo
)
7116 picfixup_size
+= 12;
7120 /* The condition here under which we call find_plt_ent must
7121 match that in relocate_section. If we call find_plt_ent here
7122 but not in relocate_section, or vice versa, then the branch
7123 destination used here may be incorrect. */
7127 /* We know is_branch_reloc (r_type) is true. */
7128 if (h
->type
== STT_GNU_IFUNC
7129 || r_type
== R_PPC_PLTREL24
)
7130 plist
= &h
->plt
.plist
;
7132 else if (sym_type
== STT_GNU_IFUNC
7133 && elf_local_got_offsets (abfd
) != NULL
)
7135 bfd_vma
*local_got_offsets
= elf_local_got_offsets (abfd
);
7136 struct plt_entry
**local_plt
= (struct plt_entry
**)
7137 (local_got_offsets
+ symtab_hdr
->sh_info
);
7138 plist
= local_plt
+ ELF32_R_SYM (irel
->r_info
);
7143 struct plt_entry
*ent
;
7145 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (link_info
))
7146 addend
= irel
->r_addend
;
7147 ent
= find_plt_ent (plist
, got2
, addend
);
7150 if (htab
->plt_type
== PLT_NEW
7152 || !htab
->elf
.dynamic_sections_created
7153 || h
->dynindx
== -1)
7156 toff
= ent
->glink_offset
;
7161 toff
= ent
->plt
.offset
;
7166 /* If the branch and target are in the same section, you have
7167 no hope of adding stubs. We'll error out later should the
7172 /* There probably isn't any reason to handle symbols in
7173 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7174 attribute for a code section, and we are only looking at
7175 branches. However, implement it correctly here as a
7176 reference for other target relax_section functions. */
7177 if (0 && tsec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
7179 /* At this stage in linking, no SEC_MERGE symbol has been
7180 adjusted, so all references to such symbols need to be
7181 passed through _bfd_merged_section_offset. (Later, in
7182 relocate_section, all SEC_MERGE symbols *except* for
7183 section symbols have been adjusted.)
7185 gas may reduce relocations against symbols in SEC_MERGE
7186 sections to a relocation against the section symbol when
7187 the original addend was zero. When the reloc is against
7188 a section symbol we should include the addend in the
7189 offset passed to _bfd_merged_section_offset, since the
7190 location of interest is the original symbol. On the
7191 other hand, an access to "sym+addend" where "sym" is not
7192 a section symbol should not include the addend; Such an
7193 access is presumed to be an offset from "sym"; The
7194 location of interest is just "sym". */
7195 if (sym_type
== STT_SECTION
)
7196 toff
+= irel
->r_addend
;
7199 = _bfd_merged_section_offset (abfd
, &tsec
,
7200 elf_section_data (tsec
)->sec_info
,
7203 if (sym_type
!= STT_SECTION
)
7204 toff
+= irel
->r_addend
;
7206 /* PLTREL24 addends are special. */
7207 else if (r_type
!= R_PPC_PLTREL24
)
7208 toff
+= irel
->r_addend
;
7210 /* Attempted -shared link of non-pic code loses. */
7211 if ((!bfd_link_relocatable (link_info
)
7212 && tsec
== bfd_und_section_ptr
)
7213 || tsec
->output_section
== NULL
7214 || (tsec
->owner
!= NULL
7215 && (tsec
->owner
->flags
& BFD_PLUGIN
) != 0))
7218 roff
= irel
->r_offset
;
7220 /* If the branch is in range, no need to do anything. */
7221 if (tsec
!= bfd_und_section_ptr
7222 && (!bfd_link_relocatable (link_info
)
7223 /* A relocatable link may have sections moved during
7224 final link, so do not presume they remain in range. */
7225 || tsec
->output_section
== isec
->output_section
))
7227 bfd_vma symaddr
, reladdr
;
7229 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
7230 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
7231 if (symaddr
- reladdr
+ max_branch_offset
7232 < 2 * max_branch_offset
)
7236 /* Look for an existing fixup to this address. */
7237 for (f
= branch_fixups
; f
; f
= f
->next
)
7238 if (f
->tsec
== tsec
&& f
->toff
== toff
)
7244 unsigned long stub_rtype
;
7246 val
= trampoff
- roff
;
7247 if (val
>= max_branch_offset
)
7248 /* Oh dear, we can't reach a trampoline. Don't try to add
7249 one. We'll report an error later. */
7252 if (bfd_link_pic (link_info
))
7254 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
7259 size
= 4 * ARRAY_SIZE (stub_entry
);
7262 stub_rtype
= R_PPC_RELAX
;
7263 if (tsec
== htab
->plt
7264 || tsec
== htab
->glink
)
7266 stub_rtype
= R_PPC_RELAX_PLT
;
7267 if (r_type
== R_PPC_PLTREL24
)
7268 stub_rtype
= R_PPC_RELAX_PLTREL24
;
7271 /* Hijack the old relocation. Since we need two
7272 relocations for this use a "composite" reloc. */
7273 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
7275 irel
->r_offset
= trampoff
+ insn_offset
;
7276 if (r_type
== R_PPC_PLTREL24
7277 && stub_rtype
!= R_PPC_RELAX_PLTREL24
)
7280 /* Record the fixup so we don't do it again this section. */
7281 f
= bfd_malloc (sizeof (*f
));
7282 f
->next
= branch_fixups
;
7285 f
->trampoff
= trampoff
;
7293 val
= f
->trampoff
- roff
;
7294 if (val
>= max_branch_offset
)
7297 /* Nop out the reloc, since we're finalizing things here. */
7298 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7301 /* Get the section contents. */
7302 if (contents
== NULL
)
7304 /* Get cached copy if it exists. */
7305 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
7306 contents
= elf_section_data (isec
)->this_hdr
.contents
;
7307 /* Go get them off disk. */
7308 else if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
7312 /* Fix up the existing branch to hit the trampoline. */
7313 hit_addr
= contents
+ roff
;
7317 case R_PPC_LOCAL24PC
:
7318 case R_PPC_PLTREL24
:
7319 t0
= bfd_get_32 (abfd
, hit_addr
);
7321 t0
|= val
& 0x3fffffc;
7322 bfd_put_32 (abfd
, t0
, hit_addr
);
7326 case R_PPC_REL14_BRTAKEN
:
7327 case R_PPC_REL14_BRNTAKEN
:
7328 t0
= bfd_get_32 (abfd
, hit_addr
);
7331 bfd_put_32 (abfd
, t0
, hit_addr
);
7336 while (branch_fixups
!= NULL
)
7338 struct one_branch_fixup
*f
= branch_fixups
;
7339 branch_fixups
= branch_fixups
->next
;
7344 workaround_change
= FALSE
;
7346 if (htab
->params
->ppc476_workaround
7347 && (!bfd_link_relocatable (link_info
)
7348 || isec
->output_section
->alignment_power
>= htab
->params
->pagesize_p2
))
7350 bfd_vma addr
, end_addr
;
7351 unsigned int crossings
;
7352 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
7354 addr
= isec
->output_section
->vma
+ isec
->output_offset
;
7355 end_addr
= addr
+ trampoff
;
7357 crossings
= ((end_addr
& -pagesize
) - addr
) >> htab
->params
->pagesize_p2
;
7360 /* Keep space aligned, to ensure the patch code itself does
7361 not cross a page. Don't decrease size calculated on a
7362 previous pass as otherwise we might never settle on a layout. */
7363 newsize
= 15 - ((end_addr
- 1) & 15);
7364 newsize
+= crossings
* 16;
7365 if (relax_info
->workaround_size
< newsize
)
7367 relax_info
->workaround_size
= newsize
;
7368 workaround_change
= TRUE
;
7370 /* Ensure relocate_section is called. */
7371 isec
->flags
|= SEC_RELOC
;
7373 newsize
= trampoff
+ relax_info
->workaround_size
;
7376 if (htab
->params
->pic_fixup
> 0)
7378 picfixup_size
-= relax_info
->picfixup_size
;
7379 if (picfixup_size
!= 0)
7380 relax_info
->picfixup_size
+= picfixup_size
;
7381 newsize
+= relax_info
->picfixup_size
;
7384 if (changes
!= 0 || picfixup_size
!= 0 || workaround_change
)
7385 isec
->size
= newsize
;
7388 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
7390 if (! link_info
->keep_memory
)
7394 /* Cache the symbols for elf_link_input_bfd. */
7395 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
7399 if (contents
!= NULL
7400 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7402 if (!changes
&& !link_info
->keep_memory
)
7406 /* Cache the section contents for elf_link_input_bfd. */
7407 elf_section_data (isec
)->this_hdr
.contents
= contents
;
7411 changes
+= picfixup_size
;
7414 /* Append sufficient NOP relocs so we can write out relocation
7415 information for the trampolines. */
7416 Elf_Internal_Shdr
*rel_hdr
;
7417 Elf_Internal_Rela
*new_relocs
= bfd_malloc ((changes
+ isec
->reloc_count
)
7418 * sizeof (*new_relocs
));
7423 memcpy (new_relocs
, internal_relocs
,
7424 isec
->reloc_count
* sizeof (*new_relocs
));
7425 for (ix
= changes
; ix
--;)
7427 irel
= new_relocs
+ ix
+ isec
->reloc_count
;
7429 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
7431 if (internal_relocs
!= elf_section_data (isec
)->relocs
)
7432 free (internal_relocs
);
7433 elf_section_data (isec
)->relocs
= new_relocs
;
7434 isec
->reloc_count
+= changes
;
7435 rel_hdr
= _bfd_elf_single_rel_hdr (isec
);
7436 rel_hdr
->sh_size
+= changes
* rel_hdr
->sh_entsize
;
7438 else if (internal_relocs
!= NULL
7439 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7440 free (internal_relocs
);
7442 *again
= changes
!= 0 || workaround_change
;
7446 while (branch_fixups
!= NULL
)
7448 struct one_branch_fixup
*f
= branch_fixups
;
7449 branch_fixups
= branch_fixups
->next
;
7452 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
7454 if (contents
!= NULL
7455 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
7457 if (internal_relocs
!= NULL
7458 && elf_section_data (isec
)->relocs
!= internal_relocs
)
7459 free (internal_relocs
);
7463 /* What to do when ld finds relocations against symbols defined in
7464 discarded sections. */
7467 ppc_elf_action_discarded (asection
*sec
)
7469 if (strcmp (".fixup", sec
->name
) == 0)
7472 if (strcmp (".got2", sec
->name
) == 0)
7475 return _bfd_elf_default_action_discarded (sec
);
7478 /* Fill in the address for a pointer generated in a linker section. */
7481 elf_finish_pointer_linker_section (bfd
*input_bfd
,
7482 elf_linker_section_t
*lsect
,
7483 struct elf_link_hash_entry
*h
,
7485 const Elf_Internal_Rela
*rel
)
7487 elf_linker_section_pointers_t
*linker_section_ptr
;
7489 BFD_ASSERT (lsect
!= NULL
);
7493 /* Handle global symbol. */
7494 struct ppc_elf_link_hash_entry
*eh
;
7496 eh
= (struct ppc_elf_link_hash_entry
*) h
;
7497 BFD_ASSERT (eh
->elf
.def_regular
);
7498 linker_section_ptr
= eh
->linker_section_pointer
;
7502 /* Handle local symbol. */
7503 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
7505 BFD_ASSERT (is_ppc_elf (input_bfd
));
7506 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
7507 linker_section_ptr
= elf_local_ptr_offsets (input_bfd
)[r_symndx
];
7510 linker_section_ptr
= elf_find_pointer_linker_section (linker_section_ptr
,
7513 BFD_ASSERT (linker_section_ptr
!= NULL
);
7515 /* Offset will always be a multiple of four, so use the bottom bit
7516 as a "written" flag. */
7517 if ((linker_section_ptr
->offset
& 1) == 0)
7519 bfd_put_32 (lsect
->section
->owner
,
7520 relocation
+ linker_section_ptr
->addend
,
7521 lsect
->section
->contents
+ linker_section_ptr
->offset
);
7522 linker_section_ptr
->offset
+= 1;
7525 relocation
= (lsect
->section
->output_section
->vma
7526 + lsect
->section
->output_offset
7527 + linker_section_ptr
->offset
- 1
7528 - SYM_VAL (lsect
->sym
));
7532 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7533 lsect
->name
, (long) relocation
, (long) relocation
);
7539 #define PPC_LO(v) ((v) & 0xffff)
7540 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7541 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7544 write_glink_stub (struct plt_entry
*ent
, asection
*plt_sec
, unsigned char *p
,
7545 struct bfd_link_info
*info
)
7547 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
7548 bfd
*output_bfd
= info
->output_bfd
;
7551 plt
= ((ent
->plt
.offset
& ~1)
7552 + plt_sec
->output_section
->vma
7553 + plt_sec
->output_offset
);
7555 if (bfd_link_pic (info
))
7559 if (ent
->addend
>= 32768)
7561 + ent
->sec
->output_section
->vma
7562 + ent
->sec
->output_offset
);
7563 else if (htab
->elf
.hgot
!= NULL
)
7564 got
= SYM_VAL (htab
->elf
.hgot
);
7568 if (plt
+ 0x8000 < 0x10000)
7570 bfd_put_32 (output_bfd
, LWZ_11_30
+ PPC_LO (plt
), p
);
7572 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7574 bfd_put_32 (output_bfd
, BCTR
, p
);
7576 bfd_put_32 (output_bfd
, htab
->params
->ppc476_workaround
? BA
: NOP
, p
);
7581 bfd_put_32 (output_bfd
, ADDIS_11_30
+ PPC_HA (plt
), p
);
7583 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7585 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7587 bfd_put_32 (output_bfd
, BCTR
, p
);
7593 bfd_put_32 (output_bfd
, LIS_11
+ PPC_HA (plt
), p
);
7595 bfd_put_32 (output_bfd
, LWZ_11_11
+ PPC_LO (plt
), p
);
7597 bfd_put_32 (output_bfd
, MTCTR_11
, p
);
7599 bfd_put_32 (output_bfd
, BCTR
, p
);
7604 /* Return true if symbol is defined statically. */
7607 is_static_defined (struct elf_link_hash_entry
*h
)
7609 return ((h
->root
.type
== bfd_link_hash_defined
7610 || h
->root
.type
== bfd_link_hash_defweak
)
7611 && h
->root
.u
.def
.section
!= NULL
7612 && h
->root
.u
.def
.section
->output_section
!= NULL
);
7615 /* If INSN is an opcode that may be used with an @tls operand, return
7616 the transformed insn for TLS optimisation, otherwise return 0. If
7617 REG is non-zero only match an insn with RB or RA equal to REG. */
7620 _bfd_elf_ppc_at_tls_transform (unsigned int insn
, unsigned int reg
)
7624 if ((insn
& (0x3f << 26)) != 31 << 26)
7627 if (reg
== 0 || ((insn
>> 11) & 0x1f) == reg
)
7628 rtra
= insn
& ((1 << 26) - (1 << 16));
7629 else if (((insn
>> 16) & 0x1f) == reg
)
7630 rtra
= (insn
& (0x1f << 21)) | ((insn
& (0x1f << 11)) << 5);
7634 if ((insn
& (0x3ff << 1)) == 266 << 1)
7637 else if ((insn
& (0x1f << 1)) == 23 << 1
7638 && ((insn
& (0x1f << 6)) < 14 << 6
7639 || ((insn
& (0x1f << 6)) >= 16 << 6
7640 && (insn
& (0x1f << 6)) < 24 << 6)))
7641 /* load and store indexed -> dform. */
7642 insn
= (32 | ((insn
>> 6) & 0x1f)) << 26;
7643 else if ((insn
& (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7644 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7645 insn
= ((58 | ((insn
>> 6) & 4)) << 26) | ((insn
>> 6) & 1);
7646 else if ((insn
& (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7648 insn
= (58 << 26) | 2;
7655 /* If INSN is an opcode that may be used with an @tprel operand, return
7656 the transformed insn for an undefined weak symbol, ie. with the
7657 thread pointer REG operand removed. Otherwise return 0. */
7660 _bfd_elf_ppc_at_tprel_transform (unsigned int insn
, unsigned int reg
)
7662 if ((insn
& (0x1f << 16)) == reg
<< 16
7663 && ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
7664 || (insn
& (0x3f << 26)) == 15u << 26 /* addis */
7665 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
7666 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
7667 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
7668 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
7669 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
7670 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
7671 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
7672 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
7673 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
7674 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
7675 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
7676 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
7677 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
7678 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7680 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
7681 && ((insn
& 3) == 0 || (insn
& 3) == 3))))
7683 insn
&= ~(0x1f << 16);
7685 else if ((insn
& (0x1f << 21)) == reg
<< 21
7686 && ((insn
& (0x3e << 26)) == 24u << 26 /* ori, oris */
7687 || (insn
& (0x3e << 26)) == 26u << 26 /* xori,xoris */
7688 || (insn
& (0x3e << 26)) == 28u << 26 /* andi,andis */))
7690 insn
&= ~(0x1f << 21);
7691 insn
|= (insn
& (0x1f << 16)) << 5;
7692 if ((insn
& (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7693 insn
-= 2 >> 26; /* convert to ori,oris */
7701 is_insn_ds_form (unsigned int insn
)
7703 return ((insn
& (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7704 || (insn
& (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7705 || (insn
& (0x3f << 26)) == 57u << 26 /* lfdp */
7706 || (insn
& (0x3f << 26)) == 61u << 26 /* stfdp */);
7710 is_insn_dq_form (unsigned int insn
)
7712 return ((insn
& (0x3f << 26)) == 56u << 26 /* lq */
7713 || ((insn
& (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7714 && (insn
& 3) == 1));
7717 /* The RELOCATE_SECTION function is called by the ELF backend linker
7718 to handle the relocations for a section.
7720 The relocs are always passed as Rela structures; if the section
7721 actually uses Rel structures, the r_addend field will always be
7724 This function is responsible for adjust the section contents as
7725 necessary, and (if using Rela relocs and generating a
7726 relocatable output file) adjusting the reloc addend as
7729 This function does not have to worry about setting the reloc
7730 address or the reloc symbol index.
7732 LOCAL_SYMS is a pointer to the swapped in local symbols.
7734 LOCAL_SECTIONS is an array giving the section in the input file
7735 corresponding to the st_shndx field of each local symbol.
7737 The global hash table entry for the global symbols can be found
7738 via elf_sym_hashes (input_bfd).
7740 When generating relocatable output, this function must handle
7741 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7742 going to be the section symbol corresponding to the output
7743 section, which means that the addend must be adjusted
7747 ppc_elf_relocate_section (bfd
*output_bfd
,
7748 struct bfd_link_info
*info
,
7750 asection
*input_section
,
7752 Elf_Internal_Rela
*relocs
,
7753 Elf_Internal_Sym
*local_syms
,
7754 asection
**local_sections
)
7756 Elf_Internal_Shdr
*symtab_hdr
;
7757 struct elf_link_hash_entry
**sym_hashes
;
7758 struct ppc_elf_link_hash_table
*htab
;
7759 Elf_Internal_Rela
*rel
;
7760 Elf_Internal_Rela
*wrel
;
7761 Elf_Internal_Rela
*relend
;
7762 Elf_Internal_Rela outrel
;
7764 bfd_vma
*local_got_offsets
;
7765 bfd_boolean ret
= TRUE
;
7766 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
7767 bfd_boolean is_vxworks_tls
;
7768 unsigned int picfixup_size
= 0;
7769 struct ppc_elf_relax_info
*relax_info
= NULL
;
7772 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7773 "%ld relocations%s",
7774 input_bfd
, input_section
,
7775 (long) input_section
->reloc_count
,
7776 (bfd_link_relocatable (info
)) ? " (relocatable)" : "");
7779 got2
= bfd_get_section_by_name (input_bfd
, ".got2");
7781 /* Initialize howto table if not already done. */
7782 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
7783 ppc_elf_howto_init ();
7785 htab
= ppc_elf_hash_table (info
);
7786 local_got_offsets
= elf_local_got_offsets (input_bfd
);
7787 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
7788 sym_hashes
= elf_sym_hashes (input_bfd
);
7789 /* We have to handle relocations in vxworks .tls_vars sections
7790 specially, because the dynamic loader is 'weird'. */
7791 is_vxworks_tls
= (htab
->is_vxworks
&& bfd_link_pic (info
)
7792 && !strcmp (input_section
->output_section
->name
,
7794 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
)
7795 relax_info
= elf_section_data (input_section
)->sec_info
;
7796 rel
= wrel
= relocs
;
7797 relend
= relocs
+ input_section
->reloc_count
;
7798 for (; rel
< relend
; wrel
++, rel
++)
7800 enum elf_ppc_reloc_type r_type
;
7802 bfd_reloc_status_type r
;
7803 Elf_Internal_Sym
*sym
;
7805 struct elf_link_hash_entry
*h
;
7806 const char *sym_name
;
7807 reloc_howto_type
*howto
;
7808 unsigned long r_symndx
;
7810 bfd_vma branch_bit
, from
;
7811 bfd_boolean unresolved_reloc
;
7813 unsigned int tls_type
, tls_mask
, tls_gd
;
7814 struct plt_entry
**ifunc
;
7815 struct reloc_howto_struct alt_howto
;
7818 r_type
= ELF32_R_TYPE (rel
->r_info
);
7822 unresolved_reloc
= FALSE
;
7824 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7826 if (r_symndx
< symtab_hdr
->sh_info
)
7828 sym
= local_syms
+ r_symndx
;
7829 sec
= local_sections
[r_symndx
];
7830 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
7832 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7836 bfd_boolean ignored
;
7838 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7839 r_symndx
, symtab_hdr
, sym_hashes
,
7841 unresolved_reloc
, warned
, ignored
);
7843 sym_name
= h
->root
.root
.string
;
7846 if (sec
!= NULL
&& discarded_section (sec
))
7848 /* For relocs against symbols from removed linkonce sections,
7849 or sections discarded by a linker script, we just want the
7850 section contents zeroed. Avoid any special processing. */
7852 if (r_type
< R_PPC_max
)
7853 howto
= ppc_elf_howto_table
[r_type
];
7855 _bfd_clear_contents (howto
, input_bfd
, input_section
,
7856 contents
+ rel
->r_offset
);
7857 wrel
->r_offset
= rel
->r_offset
;
7861 /* For ld -r, remove relocations in debug sections against
7862 sections defined in discarded sections. Not done for
7863 non-debug to preserve relocs in .eh_frame which the
7864 eh_frame editing code expects to be present. */
7865 if (bfd_link_relocatable (info
)
7866 && (input_section
->flags
& SEC_DEBUGGING
))
7872 if (bfd_link_relocatable (info
))
7875 && r_type
== R_PPC_PLTREL24
7876 && rel
->r_addend
!= 0)
7878 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7879 addend specifies the GOT pointer offset within .got2. */
7880 rel
->r_addend
+= got2
->output_offset
;
7882 if (r_type
!= R_PPC_RELAX_PLT
7883 && r_type
!= R_PPC_RELAX_PLTREL24
7884 && r_type
!= R_PPC_RELAX
)
7888 /* TLS optimizations. Replace instruction sequences and relocs
7889 based on information we collected in tls_optimize. We edit
7890 RELOCS so that --emit-relocs will output something sensible
7891 for the final instruction stream. */
7895 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
7896 else if (local_got_offsets
!= NULL
)
7898 struct plt_entry
**local_plt
;
7901 = (struct plt_entry
**) (local_got_offsets
+ symtab_hdr
->sh_info
);
7902 lgot_masks
= (char *) (local_plt
+ symtab_hdr
->sh_info
);
7903 tls_mask
= lgot_masks
[r_symndx
];
7906 /* Ensure reloc mapping code below stays sane. */
7907 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
7908 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
7909 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
7910 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
7911 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
7912 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
7913 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
7914 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
7921 case R_PPC_GOT_TPREL16
:
7922 case R_PPC_GOT_TPREL16_LO
:
7923 if ((tls_mask
& TLS_TLS
) != 0
7924 && (tls_mask
& TLS_TPREL
) == 0)
7928 insn
= bfd_get_32 (output_bfd
,
7929 contents
+ rel
->r_offset
- d_offset
);
7931 insn
|= 0x3c020000; /* addis 0,2,0 */
7932 bfd_put_32 (output_bfd
, insn
,
7933 contents
+ rel
->r_offset
- d_offset
);
7934 r_type
= R_PPC_TPREL16_HA
;
7935 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7940 if ((tls_mask
& TLS_TLS
) != 0
7941 && (tls_mask
& TLS_TPREL
) == 0)
7945 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7946 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 2);
7949 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7950 r_type
= R_PPC_TPREL16_LO
;
7951 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7953 /* Was PPC_TLS which sits on insn boundary, now
7954 PPC_TPREL16_LO which is at low-order half-word. */
7955 rel
->r_offset
+= d_offset
;
7959 case R_PPC_GOT_TLSGD16_HI
:
7960 case R_PPC_GOT_TLSGD16_HA
:
7961 tls_gd
= TLS_TPRELGD
;
7962 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7966 case R_PPC_GOT_TLSLD16_HI
:
7967 case R_PPC_GOT_TLSLD16_HA
:
7968 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7971 if ((tls_mask
& tls_gd
) != 0)
7972 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
7973 + R_PPC_GOT_TPREL16
);
7976 rel
->r_offset
-= d_offset
;
7977 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
7978 r_type
= R_PPC_NONE
;
7980 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
7984 case R_PPC_GOT_TLSGD16
:
7985 case R_PPC_GOT_TLSGD16_LO
:
7986 tls_gd
= TLS_TPRELGD
;
7987 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
7991 case R_PPC_GOT_TLSLD16
:
7992 case R_PPC_GOT_TLSLD16_LO
:
7993 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
7995 unsigned int insn1
, insn2
;
7999 offset
= (bfd_vma
) -1;
8000 /* If not using the newer R_PPC_TLSGD/LD to mark
8001 __tls_get_addr calls, we must trust that the call
8002 stays with its arg setup insns, ie. that the next
8003 reloc is the __tls_get_addr call associated with
8004 the current reloc. Edit both insns. */
8005 if (input_section
->has_tls_get_addr_call
8007 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
8008 htab
->tls_get_addr
))
8009 offset
= rel
[1].r_offset
;
8010 /* We read the low GOT_TLS insn because we need to keep
8011 the destination reg. It may be something other than
8012 the usual r3, and moved to r3 before the call by
8013 intervening code. */
8014 insn1
= bfd_get_32 (output_bfd
,
8015 contents
+ rel
->r_offset
- d_offset
);
8016 if ((tls_mask
& tls_gd
) != 0)
8019 insn1
&= (0x1f << 21) | (0x1f << 16);
8020 insn1
|= 32 << 26; /* lwz */
8021 if (offset
!= (bfd_vma
) -1)
8023 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8024 insn2
= 0x7c631214; /* add 3,3,2 */
8025 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
8027 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
8028 + R_PPC_GOT_TPREL16
);
8029 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8034 insn1
&= 0x1f << 21;
8035 insn1
|= 0x3c020000; /* addis r,2,0 */
8038 /* Was an LD reloc. */
8040 r_symndx
< symtab_hdr
->sh_info
;
8042 if (local_sections
[r_symndx
] == sec
)
8044 if (r_symndx
>= symtab_hdr
->sh_info
)
8045 r_symndx
= STN_UNDEF
;
8046 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8047 if (r_symndx
!= STN_UNDEF
)
8048 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8049 + sec
->output_offset
8050 + sec
->output_section
->vma
);
8052 r_type
= R_PPC_TPREL16_HA
;
8053 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8054 if (offset
!= (bfd_vma
) -1)
8056 rel
[1].r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8057 rel
[1].r_offset
= offset
+ d_offset
;
8058 rel
[1].r_addend
= rel
->r_addend
;
8059 insn2
= 0x38630000; /* addi 3,3,0 */
8060 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
8063 bfd_put_32 (output_bfd
, insn1
,
8064 contents
+ rel
->r_offset
- d_offset
);
8067 /* We changed the symbol on an LD reloc. Start over
8068 in order to get h, sym, sec etc. right. */
8075 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_GD
) == 0)
8078 bfd_vma offset
= rel
->r_offset
;
8080 if ((tls_mask
& TLS_TPRELGD
) != 0)
8083 r_type
= R_PPC_NONE
;
8084 insn2
= 0x7c631214; /* add 3,3,2 */
8089 r_type
= R_PPC_TPREL16_LO
;
8090 rel
->r_offset
+= d_offset
;
8091 insn2
= 0x38630000; /* addi 3,3,0 */
8093 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
8094 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
8095 /* Zap the reloc on the _tls_get_addr call too. */
8096 BFD_ASSERT (offset
== rel
[1].r_offset
);
8097 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8102 if ((tls_mask
& TLS_TLS
) != 0 && (tls_mask
& TLS_LD
) == 0)
8107 r_symndx
< symtab_hdr
->sh_info
;
8109 if (local_sections
[r_symndx
] == sec
)
8111 if (r_symndx
>= symtab_hdr
->sh_info
)
8112 r_symndx
= STN_UNDEF
;
8113 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8114 if (r_symndx
!= STN_UNDEF
)
8115 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
8116 + sec
->output_offset
8117 + sec
->output_section
->vma
);
8119 rel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_TPREL16_LO
);
8120 rel
->r_offset
+= d_offset
;
8121 insn2
= 0x38630000; /* addi 3,3,0 */
8122 bfd_put_32 (output_bfd
, insn2
,
8123 contents
+ rel
->r_offset
- d_offset
);
8124 /* Zap the reloc on the _tls_get_addr call too. */
8125 BFD_ASSERT (rel
->r_offset
- d_offset
== rel
[1].r_offset
);
8126 rel
[1].r_info
= ELF32_R_INFO (STN_UNDEF
, R_PPC_NONE
);
8132 /* Handle other relocations that tweak non-addend part of insn. */
8139 /* Branch taken prediction relocations. */
8140 case R_PPC_ADDR14_BRTAKEN
:
8141 case R_PPC_REL14_BRTAKEN
:
8142 branch_bit
= BRANCH_PREDICT_BIT
;
8145 /* Branch not taken prediction relocations. */
8146 case R_PPC_ADDR14_BRNTAKEN
:
8147 case R_PPC_REL14_BRNTAKEN
:
8151 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
8152 insn
&= ~BRANCH_PREDICT_BIT
;
8155 from
= (rel
->r_offset
8156 + input_section
->output_offset
8157 + input_section
->output_section
->vma
);
8159 /* Invert 'y' bit if not the default. */
8160 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
8161 insn
^= BRANCH_PREDICT_BIT
;
8163 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
8168 if (ELIMINATE_COPY_RELOCS
8172 && ppc_elf_hash_entry (h
)->has_addr16_ha
8173 && ppc_elf_hash_entry (h
)->has_addr16_lo
8174 && htab
->params
->pic_fixup
> 0)
8176 /* Convert lis;addi or lis;load/store accessing a protected
8177 variable defined in a shared library to PIC. */
8180 if (r_type
== R_PPC_ADDR16_HA
)
8182 insn
= bfd_get_32 (output_bfd
,
8183 contents
+ rel
->r_offset
- d_offset
);
8184 if ((insn
& (0x3f << 26)) == (15u << 26)
8185 && (insn
& (0x1f << 16)) == 0 /* lis */)
8191 p
= (contents
+ input_section
->size
8192 - relax_info
->workaround_size
8193 - relax_info
->picfixup_size
8195 off
= (p
- contents
) - (rel
->r_offset
- d_offset
);
8196 if (off
> 0x1fffffc || (off
& 3) != 0)
8197 info
->callbacks
->einfo
8198 (_("%P: %H: fixup branch overflow\n"),
8199 input_bfd
, input_section
, rel
->r_offset
);
8201 bfd_put_32 (output_bfd
, B
| off
,
8202 contents
+ rel
->r_offset
- d_offset
);
8203 got_addr
= (htab
->got
->output_section
->vma
8204 + htab
->got
->output_offset
8205 + (h
->got
.offset
& ~1));
8206 wrel
->r_offset
= (p
- contents
) + d_offset
;
8207 wrel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_HA
);
8208 wrel
->r_addend
= got_addr
;
8210 insn
|= ((unsigned int )(got_addr
+ 0x8000) >> 16) & 0xffff;
8211 bfd_put_32 (output_bfd
, insn
, p
);
8213 /* Convert lis to lwz, loading address from GOT. */
8215 insn
^= (32u ^ 15u) << 26;
8216 insn
|= (insn
& (0x1f << 21)) >> 5;
8217 insn
|= got_addr
& 0xffff;
8218 bfd_put_32 (output_bfd
, insn
, p
+ 4);
8220 bfd_put_32 (output_bfd
, B
| ((-4 - off
) & 0x3ffffff), p
+ 8);
8221 picfixup_size
+= 12;
8223 /* Use one of the spare relocs, so --emit-relocs
8224 output is reasonable. */
8225 memmove (rel
+ 1, rel
, (relend
- rel
- 1) * sizeof (*rel
));
8227 rel
->r_offset
= wrel
[-1].r_offset
+ 4;
8228 rel
->r_info
= ELF32_R_INFO (0, R_PPC_ADDR16_LO
);
8229 rel
->r_addend
= wrel
[-1].r_addend
;
8231 /* Continue on as if we had a got reloc, to output
8233 r_type
= R_PPC_GOT16_LO
;
8236 info
->callbacks
->einfo
8237 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8238 input_bfd
, input_section
, rel
->r_offset
,
8239 "R_PPC_ADDR16_HA", insn
);
8241 else if (r_type
== R_PPC_ADDR16_LO
)
8243 insn
= bfd_get_32 (output_bfd
,
8244 contents
+ rel
->r_offset
- d_offset
);
8245 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
8246 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
8247 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
8248 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
8249 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
8250 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
8251 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
8252 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
8253 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
8254 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
8255 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
8256 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
8257 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
8258 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
8259 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8261 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
8262 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
8264 /* Arrange to apply the reloc addend, if any. */
8266 unresolved_reloc
= FALSE
;
8267 rel
->r_info
= ELF32_R_INFO (0, r_type
);
8270 info
->callbacks
->einfo
8271 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8272 input_bfd
, input_section
, rel
->r_offset
,
8273 "R_PPC_ADDR16_LO", insn
);
8278 if (!htab
->is_vxworks
)
8280 struct plt_entry
*ent
;
8284 if (h
->type
== STT_GNU_IFUNC
)
8285 ifunc
= &h
->plt
.plist
;
8287 else if (local_got_offsets
!= NULL
8288 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8290 struct plt_entry
**local_plt
;
8292 local_plt
= (struct plt_entry
**) (local_got_offsets
8293 + symtab_hdr
->sh_info
);
8294 ifunc
= local_plt
+ r_symndx
;
8299 && (!bfd_link_pic (info
)
8300 || is_branch_reloc (r_type
)))
8303 if (r_type
== R_PPC_PLTREL24
&& bfd_link_pic (info
))
8304 addend
= rel
->r_addend
;
8305 ent
= find_plt_ent (ifunc
, got2
, addend
);
8309 if (h
== NULL
&& (ent
->plt
.offset
& 1) == 0)
8311 Elf_Internal_Rela rela
;
8314 rela
.r_offset
= (htab
->iplt
->output_section
->vma
8315 + htab
->iplt
->output_offset
8317 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8318 rela
.r_addend
= relocation
;
8319 loc
= htab
->reliplt
->contents
;
8320 loc
+= (htab
->reliplt
->reloc_count
++
8321 * sizeof (Elf32_External_Rela
));
8322 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
8324 ent
->plt
.offset
|= 1;
8326 if (h
== NULL
&& (ent
->glink_offset
& 1) == 0)
8328 unsigned char *p
= ((unsigned char *) htab
->glink
->contents
8329 + ent
->glink_offset
);
8330 write_glink_stub (ent
, htab
->iplt
, p
, info
);
8331 ent
->glink_offset
|= 1;
8334 unresolved_reloc
= FALSE
;
8335 if (htab
->plt_type
== PLT_NEW
8336 || !htab
->elf
.dynamic_sections_created
8338 || h
->dynindx
== -1)
8339 relocation
= (htab
->glink
->output_section
->vma
8340 + htab
->glink
->output_offset
8341 + (ent
->glink_offset
& ~1));
8343 relocation
= (htab
->plt
->output_section
->vma
8344 + htab
->plt
->output_offset
8349 addend
= rel
->r_addend
;
8352 if (r_type
< R_PPC_max
)
8353 howto
= ppc_elf_howto_table
[r_type
];
8357 info
->callbacks
->einfo
8358 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8359 input_bfd
, (int) r_type
, sym_name
);
8361 bfd_set_error (bfd_error_bad_value
);
8369 case R_PPC_EMB_MRKREF
:
8370 case R_PPC_GNU_VTINHERIT
:
8371 case R_PPC_GNU_VTENTRY
:
8374 /* GOT16 relocations. Like an ADDR16 using the symbol's
8375 address in the GOT as relocation value instead of the
8376 symbol's value itself. Also, create a GOT entry for the
8377 symbol and put the symbol value there. */
8378 case R_PPC_GOT_TLSGD16
:
8379 case R_PPC_GOT_TLSGD16_LO
:
8380 case R_PPC_GOT_TLSGD16_HI
:
8381 case R_PPC_GOT_TLSGD16_HA
:
8382 tls_type
= TLS_TLS
| TLS_GD
;
8385 case R_PPC_GOT_TLSLD16
:
8386 case R_PPC_GOT_TLSLD16_LO
:
8387 case R_PPC_GOT_TLSLD16_HI
:
8388 case R_PPC_GOT_TLSLD16_HA
:
8389 tls_type
= TLS_TLS
| TLS_LD
;
8392 case R_PPC_GOT_TPREL16
:
8393 case R_PPC_GOT_TPREL16_LO
:
8394 case R_PPC_GOT_TPREL16_HI
:
8395 case R_PPC_GOT_TPREL16_HA
:
8396 tls_type
= TLS_TLS
| TLS_TPREL
;
8399 case R_PPC_GOT_DTPREL16
:
8400 case R_PPC_GOT_DTPREL16_LO
:
8401 case R_PPC_GOT_DTPREL16_HI
:
8402 case R_PPC_GOT_DTPREL16_HA
:
8403 tls_type
= TLS_TLS
| TLS_DTPREL
;
8407 case R_PPC_GOT16_LO
:
8408 case R_PPC_GOT16_HI
:
8409 case R_PPC_GOT16_HA
:
8413 /* Relocation is to the entry for this symbol in the global
8419 if (htab
->got
== NULL
)
8423 if (tls_type
== (TLS_TLS
| TLS_LD
)
8425 || !h
->def_dynamic
))
8426 offp
= &htab
->tlsld_got
.offset
;
8430 dyn
= htab
->elf
.dynamic_sections_created
;
8431 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
8432 || (bfd_link_pic (info
)
8433 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
8434 /* This is actually a static link, or it is a
8435 -Bsymbolic link and the symbol is defined
8436 locally, or the symbol was forced to be local
8437 because of a version file. */
8441 BFD_ASSERT (h
->dynindx
!= -1);
8443 unresolved_reloc
= FALSE
;
8445 offp
= &h
->got
.offset
;
8449 if (local_got_offsets
== NULL
)
8451 offp
= &local_got_offsets
[r_symndx
];
8454 /* The offset must always be a multiple of 4. We use the
8455 least significant bit to record whether we have already
8456 processed this entry. */
8462 unsigned int tls_m
= (tls_mask
8463 & (TLS_LD
| TLS_GD
| TLS_DTPREL
8464 | TLS_TPREL
| TLS_TPRELGD
));
8466 if (offp
== &htab
->tlsld_got
.offset
)
8472 /* We might have multiple got entries for this sym.
8473 Initialize them all. */
8478 if ((tls_m
& TLS_LD
) != 0)
8480 tls_ty
= TLS_TLS
| TLS_LD
;
8483 else if ((tls_m
& TLS_GD
) != 0)
8485 tls_ty
= TLS_TLS
| TLS_GD
;
8488 else if ((tls_m
& TLS_DTPREL
) != 0)
8490 tls_ty
= TLS_TLS
| TLS_DTPREL
;
8491 tls_m
&= ~TLS_DTPREL
;
8493 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
8495 tls_ty
= TLS_TLS
| TLS_TPREL
;
8499 /* Generate relocs for the dynamic linker. */
8500 if ((bfd_link_pic (info
) || indx
!= 0)
8501 && (offp
== &htab
->tlsld_got
.offset
8503 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8504 || h
->root
.type
!= bfd_link_hash_undefweak
))
8506 asection
*rsec
= htab
->relgot
;
8510 rsec
= htab
->reliplt
;
8511 outrel
.r_offset
= (htab
->got
->output_section
->vma
8512 + htab
->got
->output_offset
8514 outrel
.r_addend
= 0;
8515 if (tls_ty
& (TLS_LD
| TLS_GD
))
8517 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
8518 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8520 loc
= rsec
->contents
;
8521 loc
+= (rsec
->reloc_count
++
8522 * sizeof (Elf32_External_Rela
));
8523 bfd_elf32_swap_reloca_out (output_bfd
,
8525 outrel
.r_offset
+= 4;
8527 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8530 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
8531 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
8532 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8533 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
8535 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
8536 else if (ifunc
!= NULL
)
8537 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8539 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8540 if (indx
== 0 && tls_ty
!= (TLS_TLS
| TLS_LD
))
8542 outrel
.r_addend
+= relocation
;
8543 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8545 if (htab
->elf
.tls_sec
== NULL
)
8546 outrel
.r_addend
= 0;
8548 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
8551 loc
= rsec
->contents
;
8552 loc
+= (rsec
->reloc_count
++
8553 * sizeof (Elf32_External_Rela
));
8554 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8557 /* Init the .got section contents if we're not
8558 emitting a reloc. */
8561 bfd_vma value
= relocation
;
8563 if (tls_ty
== (TLS_TLS
| TLS_LD
))
8565 else if (tls_ty
!= 0)
8567 if (htab
->elf
.tls_sec
== NULL
)
8571 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8572 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
8573 value
+= DTP_OFFSET
- TP_OFFSET
;
8576 if (tls_ty
== (TLS_TLS
| TLS_GD
))
8578 bfd_put_32 (output_bfd
, value
,
8579 htab
->got
->contents
+ off
+ 4);
8583 bfd_put_32 (output_bfd
, value
,
8584 htab
->got
->contents
+ off
);
8588 if (tls_ty
& (TLS_LD
| TLS_GD
))
8597 if (off
>= (bfd_vma
) -2)
8600 if ((tls_type
& TLS_TLS
) != 0)
8602 if (tls_type
!= (TLS_TLS
| TLS_LD
))
8604 if ((tls_mask
& TLS_LD
) != 0
8606 || !h
->def_dynamic
))
8608 if (tls_type
!= (TLS_TLS
| TLS_GD
))
8610 if ((tls_mask
& TLS_GD
) != 0)
8612 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
8614 if ((tls_mask
& TLS_DTPREL
) != 0)
8621 /* If here for a picfixup, we're done. */
8622 if (r_type
!= ELF32_R_TYPE (rel
->r_info
))
8625 relocation
= (htab
->got
->output_section
->vma
8626 + htab
->got
->output_offset
8628 - SYM_VAL (htab
->elf
.hgot
));
8630 /* Addends on got relocations don't make much sense.
8631 x+off@got is actually x@got+off, and since the got is
8632 generated by a hash table traversal, the value in the
8633 got at entry m+n bears little relation to the entry m. */
8635 info
->callbacks
->einfo
8636 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8637 input_bfd
, input_section
, rel
->r_offset
,
8643 /* Relocations that need no special processing. */
8644 case R_PPC_LOCAL24PC
:
8645 /* It makes no sense to point a local relocation
8646 at a symbol not in this object. */
8647 if (unresolved_reloc
)
8649 (*info
->callbacks
->undefined_symbol
) (info
,
8650 h
->root
.root
.string
,
8659 case R_PPC_DTPREL16
:
8660 case R_PPC_DTPREL16_LO
:
8661 case R_PPC_DTPREL16_HI
:
8662 case R_PPC_DTPREL16_HA
:
8663 if (htab
->elf
.tls_sec
!= NULL
)
8664 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8667 /* Relocations that may need to be propagated if this is a shared
8670 case R_PPC_TPREL16_LO
:
8671 case R_PPC_TPREL16_HI
:
8672 case R_PPC_TPREL16_HA
:
8674 && h
->root
.type
== bfd_link_hash_undefweak
8675 && h
->dynindx
== -1)
8677 /* Make this relocation against an undefined weak symbol
8678 resolve to zero. This is really just a tweak, since
8679 code using weak externs ought to check that they are
8680 defined before using them. */
8681 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
8682 unsigned int insn
= bfd_get_32 (output_bfd
, p
);
8683 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 2);
8685 bfd_put_32 (output_bfd
, insn
, p
);
8688 if (htab
->elf
.tls_sec
!= NULL
)
8689 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8690 /* The TPREL16 relocs shouldn't really be used in shared
8691 libs as they will result in DT_TEXTREL being set, but
8692 support them anyway. */
8696 if (htab
->elf
.tls_sec
!= NULL
)
8697 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
8700 case R_PPC_DTPREL32
:
8701 if (htab
->elf
.tls_sec
!= NULL
)
8702 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
8705 case R_PPC_DTPMOD32
:
8711 case R_PPC_REL16_LO
:
8712 case R_PPC_REL16_HI
:
8713 case R_PPC_REL16_HA
:
8714 case R_PPC_REL16DX_HA
:
8718 if (h
== NULL
|| h
== htab
->elf
.hgot
)
8724 case R_PPC_ADDR16_LO
:
8725 case R_PPC_ADDR16_HI
:
8726 case R_PPC_ADDR16_HA
:
8731 case R_PPC_VLE_REL8
:
8732 case R_PPC_VLE_REL15
:
8733 case R_PPC_VLE_REL24
:
8736 case R_PPC_REL14_BRTAKEN
:
8737 case R_PPC_REL14_BRNTAKEN
:
8738 /* If these relocations are not to a named symbol, they can be
8739 handled right here, no need to bother the dynamic linker. */
8740 if (SYMBOL_CALLS_LOCAL (info
, h
)
8741 || h
== htab
->elf
.hgot
)
8747 case R_PPC_ADDR14_BRTAKEN
:
8748 case R_PPC_ADDR14_BRNTAKEN
:
8749 if (h
!= NULL
&& !bfd_link_pic (info
))
8754 if ((input_section
->flags
& SEC_ALLOC
) == 0
8758 if ((bfd_link_pic (info
)
8760 && ((h
->root
.type
== bfd_link_hash_undefined
8761 && (ELF_ST_VISIBILITY (h
->other
) == STV_HIDDEN
8762 || ELF_ST_VISIBILITY (h
->other
) == STV_INTERNAL
))
8763 || (h
->root
.type
== bfd_link_hash_undefweak
8764 && ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)))
8765 && (must_be_dyn_reloc (info
, r_type
)
8766 || !SYMBOL_CALLS_LOCAL (info
, h
)))
8767 || (ELIMINATE_COPY_RELOCS
8768 && !bfd_link_pic (info
)
8773 && !(h
->protected_def
8774 && ppc_elf_hash_entry (h
)->has_addr16_ha
8775 && ppc_elf_hash_entry (h
)->has_addr16_lo
8776 && htab
->params
->pic_fixup
> 0)))
8782 fprintf (stderr
, "ppc_elf_relocate_section needs to "
8783 "create relocation for %s\n",
8784 (h
&& h
->root
.root
.string
8785 ? h
->root
.root
.string
: "<unknown>"));
8788 /* When generating a shared object, these relocations
8789 are copied into the output file to be resolved at run
8791 sreloc
= elf_section_data (input_section
)->sreloc
;
8793 sreloc
= htab
->reliplt
;
8798 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
8801 if (outrel
.r_offset
== (bfd_vma
) -1
8802 || outrel
.r_offset
== (bfd_vma
) -2)
8803 skip
= (int) outrel
.r_offset
;
8804 outrel
.r_offset
+= (input_section
->output_section
->vma
8805 + input_section
->output_offset
);
8808 memset (&outrel
, 0, sizeof outrel
);
8810 && (h
->root
.type
== bfd_link_hash_undefined
8811 || h
->root
.type
== bfd_link_hash_undefweak
))
8812 || !SYMBOL_REFERENCES_LOCAL (info
, h
))
8814 BFD_ASSERT (h
->dynindx
!= -1);
8815 unresolved_reloc
= FALSE
;
8816 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
8817 outrel
.r_addend
= rel
->r_addend
;
8821 outrel
.r_addend
= relocation
+ rel
->r_addend
;
8823 if (r_type
!= R_PPC_ADDR32
)
8829 /* If we get here when building a static
8830 executable, then the libc startup function
8831 responsible for applying indirect function
8832 relocations is going to complain about
8834 If we get here when building a dynamic
8835 executable, it will be because we have
8836 a text relocation. The dynamic loader
8837 will set the text segment writable and
8838 non-executable to apply text relocations.
8839 So we'll segfault when trying to run the
8840 indirection function to resolve the reloc. */
8841 info
->callbacks
->einfo
8842 (_("%P: %H: relocation %s for indirect "
8843 "function %s unsupported\n"),
8844 input_bfd
, input_section
, rel
->r_offset
,
8849 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
8851 else if (sec
== NULL
|| sec
->owner
== NULL
)
8853 bfd_set_error (bfd_error_bad_value
);
8860 /* We are turning this relocation into one
8861 against a section symbol. It would be
8862 proper to subtract the symbol's value,
8863 osec->vma, from the emitted reloc addend,
8864 but ld.so expects buggy relocs.
8865 FIXME: Why not always use a zero index? */
8866 osec
= sec
->output_section
;
8867 indx
= elf_section_data (osec
)->dynindx
;
8870 osec
= htab
->elf
.text_index_section
;
8871 indx
= elf_section_data (osec
)->dynindx
;
8873 BFD_ASSERT (indx
!= 0);
8876 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8877 indx
, osec
->name
, osec
->flags
,
8878 h
->root
.root
.string
);
8882 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
8884 else if (ifunc
!= NULL
)
8885 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
8887 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
8890 loc
= sreloc
->contents
;
8891 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
8892 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
8897 /* This reloc will be computed at runtime. We clear the memory
8898 so that it contains predictable value. */
8900 && ((input_section
->flags
& SEC_ALLOC
) != 0
8901 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
8903 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
8910 case R_PPC_RELAX_PLT
:
8911 case R_PPC_RELAX_PLTREL24
:
8914 struct plt_entry
*ent
;
8915 bfd_vma got2_addend
= 0;
8917 if (r_type
== R_PPC_RELAX_PLTREL24
)
8919 if (bfd_link_pic (info
))
8920 got2_addend
= addend
;
8923 ent
= find_plt_ent (&h
->plt
.plist
, got2
, got2_addend
);
8924 if (htab
->plt_type
== PLT_NEW
)
8925 relocation
= (htab
->glink
->output_section
->vma
8926 + htab
->glink
->output_offset
8927 + ent
->glink_offset
);
8929 relocation
= (htab
->plt
->output_section
->vma
8930 + htab
->plt
->output_offset
8939 size_t insn_offset
= rel
->r_offset
;
8942 if (bfd_link_pic (info
))
8944 relocation
-= (input_section
->output_section
->vma
8945 + input_section
->output_offset
8946 + rel
->r_offset
- 4);
8947 stub
= shared_stub_entry
;
8948 bfd_put_32 (output_bfd
, stub
[0], contents
+ insn_offset
- 12);
8949 bfd_put_32 (output_bfd
, stub
[1], contents
+ insn_offset
- 8);
8950 bfd_put_32 (output_bfd
, stub
[2], contents
+ insn_offset
- 4);
8952 size
= ARRAY_SIZE (shared_stub_entry
) - 3;
8957 size
= ARRAY_SIZE (stub_entry
);
8960 relocation
+= addend
;
8961 if (bfd_link_relocatable (info
))
8964 /* First insn is HA, second is LO. */
8966 insn
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
8967 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8971 insn
|= relocation
& 0xffff;
8972 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8980 bfd_put_32 (output_bfd
, insn
, contents
+ insn_offset
);
8984 /* Rewrite the reloc and convert one of the trailing nop
8985 relocs to describe this relocation. */
8986 BFD_ASSERT (ELF32_R_TYPE (relend
[-1].r_info
) == R_PPC_NONE
);
8987 /* The relocs are at the bottom 2 bytes */
8988 wrel
->r_offset
= rel
->r_offset
+ d_offset
;
8989 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_HA
);
8990 wrel
->r_addend
= rel
->r_addend
;
8991 memmove (wrel
+ 1, wrel
, (relend
- wrel
- 1) * sizeof (*wrel
));
8993 wrel
->r_offset
+= 4;
8994 wrel
->r_info
= ELF32_R_INFO (r_symndx
, R_PPC_ADDR16_LO
);
8998 /* Indirect .sdata relocation. */
8999 case R_PPC_EMB_SDAI16
:
9000 BFD_ASSERT (htab
->sdata
[0].section
!= NULL
);
9001 if (!is_static_defined (htab
->sdata
[0].sym
))
9003 unresolved_reloc
= TRUE
;
9007 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[0],
9008 h
, relocation
, rel
);
9012 /* Indirect .sdata2 relocation. */
9013 case R_PPC_EMB_SDA2I16
:
9014 BFD_ASSERT (htab
->sdata
[1].section
!= NULL
);
9015 if (!is_static_defined (htab
->sdata
[1].sym
))
9017 unresolved_reloc
= TRUE
;
9021 = elf_finish_pointer_linker_section (input_bfd
, &htab
->sdata
[1],
9022 h
, relocation
, rel
);
9026 /* Handle the TOC16 reloc. We want to use the offset within the .got
9027 section, not the actual VMA. This is appropriate when generating
9028 an embedded ELF object, for which the .got section acts like the
9029 AIX .toc section. */
9030 case R_PPC_TOC16
: /* phony GOT16 relocations */
9031 if (sec
== NULL
|| sec
->output_section
== NULL
)
9033 unresolved_reloc
= TRUE
;
9036 BFD_ASSERT (strcmp (bfd_get_section_name (sec
->owner
, sec
),
9038 || strcmp (bfd_get_section_name (sec
->owner
, sec
),
9041 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
9044 case R_PPC_PLTREL24
:
9045 if (h
!= NULL
&& ifunc
== NULL
)
9047 struct plt_entry
*ent
;
9049 ent
= find_plt_ent (&h
->plt
.plist
, got2
,
9050 bfd_link_pic (info
) ? addend
: 0);
9052 || htab
->plt
== NULL
)
9054 /* We didn't make a PLT entry for this symbol. This
9055 happens when statically linking PIC code, or when
9056 using -Bsymbolic. */
9060 /* Relocation is to the entry for this symbol in the
9061 procedure linkage table. */
9062 unresolved_reloc
= FALSE
;
9063 if (htab
->plt_type
== PLT_NEW
)
9064 relocation
= (htab
->glink
->output_section
->vma
9065 + htab
->glink
->output_offset
9066 + ent
->glink_offset
);
9068 relocation
= (htab
->plt
->output_section
->vma
9069 + htab
->plt
->output_offset
9074 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9075 addend specifies the GOT pointer offset within .got2.
9076 Don't apply it to the relocation field. */
9080 /* Relocate against _SDA_BASE_. */
9081 case R_PPC_SDAREL16
:
9084 struct elf_link_hash_entry
*sda
= htab
->sdata
[0].sym
;
9087 || sec
->output_section
== NULL
9088 || !is_static_defined (sda
))
9090 unresolved_reloc
= TRUE
;
9093 addend
-= SYM_VAL (sda
);
9095 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9096 if (!(strcmp (name
, ".sdata") == 0
9097 || strcmp (name
, ".sbss") == 0))
9099 info
->callbacks
->einfo
9100 (_("%P: %B: the target (%s) of a %s relocation is "
9101 "in the wrong output section (%s)\n"),
9110 /* Relocate against _SDA2_BASE_. */
9111 case R_PPC_EMB_SDA2REL
:
9114 struct elf_link_hash_entry
*sda
= htab
->sdata
[1].sym
;
9117 || sec
->output_section
== NULL
9118 || !is_static_defined (sda
))
9120 unresolved_reloc
= TRUE
;
9123 addend
-= SYM_VAL (sda
);
9125 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9126 if (!(strcmp (name
, ".sdata2") == 0
9127 || strcmp (name
, ".sbss2") == 0))
9129 info
->callbacks
->einfo
9130 (_("%P: %B: the target (%s) of a %s relocation is "
9131 "in the wrong output section (%s)\n"),
9140 case R_PPC_VLE_LO16A
:
9141 relocation
= relocation
+ addend
;
9142 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9143 relocation
, split16a_type
);
9146 case R_PPC_VLE_LO16D
:
9147 relocation
= relocation
+ addend
;
9148 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9149 relocation
, split16d_type
);
9152 case R_PPC_VLE_HI16A
:
9153 relocation
= (relocation
+ addend
) >> 16;
9154 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9155 relocation
, split16a_type
);
9158 case R_PPC_VLE_HI16D
:
9159 relocation
= (relocation
+ addend
) >> 16;
9160 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9161 relocation
, split16d_type
);
9164 case R_PPC_VLE_HA16A
:
9165 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9166 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9167 relocation
, split16a_type
);
9170 case R_PPC_VLE_HA16D
:
9171 relocation
= (relocation
+ addend
+ 0x8000) >> 16;
9172 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9173 relocation
, split16d_type
);
9176 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9177 case R_PPC_EMB_SDA21
:
9178 case R_PPC_VLE_SDA21
:
9179 case R_PPC_EMB_RELSDA
:
9180 case R_PPC_VLE_SDA21_LO
:
9185 struct elf_link_hash_entry
*sda
= NULL
;
9187 if (sec
== NULL
|| sec
->output_section
== NULL
)
9189 unresolved_reloc
= TRUE
;
9193 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9194 if (strcmp (name
, ".sdata") == 0
9195 || strcmp (name
, ".sbss") == 0)
9198 sda
= htab
->sdata
[0].sym
;
9200 else if (strcmp (name
, ".sdata2") == 0
9201 || strcmp (name
, ".sbss2") == 0)
9204 sda
= htab
->sdata
[1].sym
;
9206 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
9207 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
9213 info
->callbacks
->einfo
9214 (_("%P: %B: the target (%s) of a %s relocation is "
9215 "in the wrong output section (%s)\n"),
9221 bfd_set_error (bfd_error_bad_value
);
9228 if (!is_static_defined (sda
))
9230 unresolved_reloc
= TRUE
;
9233 addend
-= SYM_VAL (sda
);
9236 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
9238 && (r_type
== R_PPC_VLE_SDA21
9239 || r_type
== R_PPC_VLE_SDA21_LO
))
9241 relocation
= relocation
+ addend
;
9244 /* Force e_li insn, keeping RT from original insn. */
9248 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9249 /* Top 4 bits of value to 17..20. */
9250 insn
|= (relocation
& 0xf0000) >> 5;
9251 /* Next 5 bits of the value to 11..15. */
9252 insn
|= (relocation
& 0xf800) << 5;
9253 /* And the final 11 bits of the value to bits 21 to 31. */
9254 insn
|= relocation
& 0x7ff;
9256 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9258 if (r_type
== R_PPC_VLE_SDA21
9259 && ((relocation
+ 0x80000) & 0xffffffff) > 0x100000)
9263 else if (r_type
== R_PPC_EMB_SDA21
9264 || r_type
== R_PPC_VLE_SDA21
9265 || r_type
== R_PPC_VLE_SDA21_LO
)
9267 /* Fill in register field. */
9268 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
9270 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
9274 case R_PPC_VLE_SDAREL_LO16A
:
9275 case R_PPC_VLE_SDAREL_LO16D
:
9276 case R_PPC_VLE_SDAREL_HI16A
:
9277 case R_PPC_VLE_SDAREL_HI16D
:
9278 case R_PPC_VLE_SDAREL_HA16A
:
9279 case R_PPC_VLE_SDAREL_HA16D
:
9284 struct elf_link_hash_entry
*sda
= NULL
;
9286 if (sec
== NULL
|| sec
->output_section
== NULL
)
9288 unresolved_reloc
= TRUE
;
9292 name
= bfd_get_section_name (output_bfd
, sec
->output_section
);
9293 if (strcmp (name
, ".sdata") == 0
9294 || strcmp (name
, ".sbss") == 0)
9297 sda
= htab
->sdata
[0].sym
;
9299 else if (strcmp (name
, ".sdata2") == 0
9300 || strcmp (name
, ".sbss2") == 0)
9303 sda
= htab
->sdata
[1].sym
;
9307 (*_bfd_error_handler
)
9308 (_("%B: the target (%s) of a %s relocation is "
9309 "in the wrong output section (%s)"),
9315 bfd_set_error (bfd_error_bad_value
);
9322 if (!is_static_defined (sda
))
9324 unresolved_reloc
= TRUE
;
9329 value
= (sda
->root
.u
.def
.section
->output_section
->vma
9330 + sda
->root
.u
.def
.section
->output_offset
9333 if (r_type
== R_PPC_VLE_SDAREL_LO16A
)
9334 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9335 value
, split16a_type
);
9336 else if (r_type
== R_PPC_VLE_SDAREL_LO16D
)
9337 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9338 value
, split16d_type
);
9339 else if (r_type
== R_PPC_VLE_SDAREL_HI16A
)
9341 value
= value
>> 16;
9342 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9343 value
, split16a_type
);
9345 else if (r_type
== R_PPC_VLE_SDAREL_HI16D
)
9347 value
= value
>> 16;
9348 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9349 value
, split16d_type
);
9351 else if (r_type
== R_PPC_VLE_SDAREL_HA16A
)
9353 value
= (value
+ 0x8000) >> 16;
9354 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9355 value
, split16a_type
);
9357 else if (r_type
== R_PPC_VLE_SDAREL_HA16D
)
9359 value
= (value
+ 0x8000) >> 16;
9360 ppc_elf_vle_split16 (output_bfd
, contents
+ rel
->r_offset
,
9361 value
, split16d_type
);
9366 /* Relocate against the beginning of the section. */
9368 case R_PPC_SECTOFF_LO
:
9369 case R_PPC_SECTOFF_HI
:
9370 case R_PPC_SECTOFF_HA
:
9371 if (sec
== NULL
|| sec
->output_section
== NULL
)
9373 unresolved_reloc
= TRUE
;
9376 addend
-= sec
->output_section
->vma
;
9379 /* Negative relocations. */
9380 case R_PPC_EMB_NADDR32
:
9381 case R_PPC_EMB_NADDR16
:
9382 case R_PPC_EMB_NADDR16_LO
:
9383 case R_PPC_EMB_NADDR16_HI
:
9384 case R_PPC_EMB_NADDR16_HA
:
9385 addend
-= 2 * relocation
;
9389 case R_PPC_GLOB_DAT
:
9390 case R_PPC_JMP_SLOT
:
9391 case R_PPC_RELATIVE
:
9392 case R_PPC_IRELATIVE
:
9394 case R_PPC_PLTREL32
:
9395 case R_PPC_PLT16_LO
:
9396 case R_PPC_PLT16_HI
:
9397 case R_PPC_PLT16_HA
:
9399 case R_PPC_EMB_RELSEC16
:
9400 case R_PPC_EMB_RELST_LO
:
9401 case R_PPC_EMB_RELST_HI
:
9402 case R_PPC_EMB_RELST_HA
:
9403 case R_PPC_EMB_BIT_FLD
:
9404 info
->callbacks
->einfo
9405 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9410 bfd_set_error (bfd_error_invalid_operation
);
9415 /* Do any further special processing. */
9421 case R_PPC_ADDR16_HA
:
9422 case R_PPC_REL16_HA
:
9423 case R_PPC_REL16DX_HA
:
9424 case R_PPC_SECTOFF_HA
:
9425 case R_PPC_TPREL16_HA
:
9426 case R_PPC_DTPREL16_HA
:
9427 case R_PPC_EMB_NADDR16_HA
:
9428 case R_PPC_EMB_RELST_HA
:
9429 /* It's just possible that this symbol is a weak symbol
9430 that's not actually defined anywhere. In that case,
9431 'sec' would be NULL, and we should leave the symbol
9432 alone (it will be set to zero elsewhere in the link). */
9437 case R_PPC_PLT16_HA
:
9438 case R_PPC_GOT16_HA
:
9439 case R_PPC_GOT_TLSGD16_HA
:
9440 case R_PPC_GOT_TLSLD16_HA
:
9441 case R_PPC_GOT_TPREL16_HA
:
9442 case R_PPC_GOT_DTPREL16_HA
:
9443 /* Add 0x10000 if sign bit in 0:15 is set.
9444 Bits 0:15 are not used. */
9449 case R_PPC_ADDR16_LO
:
9451 case R_PPC_GOT16_LO
:
9452 case R_PPC_SDAREL16
:
9454 case R_PPC_SECTOFF_LO
:
9455 case R_PPC_DTPREL16
:
9456 case R_PPC_DTPREL16_LO
:
9458 case R_PPC_TPREL16_LO
:
9459 case R_PPC_GOT_TLSGD16
:
9460 case R_PPC_GOT_TLSGD16_LO
:
9461 case R_PPC_GOT_TLSLD16
:
9462 case R_PPC_GOT_TLSLD16_LO
:
9463 case R_PPC_GOT_DTPREL16
:
9464 case R_PPC_GOT_DTPREL16_LO
:
9465 case R_PPC_GOT_TPREL16
:
9466 case R_PPC_GOT_TPREL16_LO
:
9468 /* The 32-bit ABI lacks proper relocations to deal with
9469 certain 64-bit instructions. Prevent damage to bits
9470 that make up part of the insn opcode. */
9471 unsigned int insn
, mask
, lobit
;
9473 insn
= bfd_get_32 (output_bfd
,
9474 contents
+ rel
->r_offset
- d_offset
);
9476 if (is_insn_ds_form (insn
))
9478 else if (is_insn_dq_form (insn
))
9482 relocation
+= addend
;
9483 addend
= insn
& mask
;
9484 lobit
= mask
& relocation
;
9487 relocation
^= lobit
;
9488 info
->callbacks
->einfo
9489 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9490 input_bfd
, input_section
, rel
->r_offset
,
9491 howto
->name
, sym_name
, mask
+ 1);
9492 bfd_set_error (bfd_error_bad_value
);
9500 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9501 "offset = %ld, addend = %ld\n",
9506 (long) rel
->r_offset
,
9510 if (unresolved_reloc
9511 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
9513 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
9514 rel
->r_offset
) != (bfd_vma
) -1)
9516 info
->callbacks
->einfo
9517 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9518 input_bfd
, input_section
, rel
->r_offset
,
9524 /* 16-bit fields in insns mostly have signed values, but a
9525 few insns have 16-bit unsigned values. Really, we should
9526 have different reloc types. */
9527 if (howto
->complain_on_overflow
!= complain_overflow_dont
9528 && howto
->dst_mask
== 0xffff
9529 && (input_section
->flags
& SEC_CODE
) != 0)
9531 enum complain_overflow complain
= complain_overflow_signed
;
9533 if ((elf_section_flags (input_section
) & SHF_PPC_VLE
) == 0)
9537 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
9538 if ((insn
& (0x3f << 26)) == 10u << 26 /* cmpli */)
9539 complain
= complain_overflow_bitfield
;
9540 else if ((insn
& (0x3f << 26)) == 28u << 26 /* andi */
9541 || (insn
& (0x3f << 26)) == 24u << 26 /* ori */
9542 || (insn
& (0x3f << 26)) == 26u << 26 /* xori */)
9543 complain
= complain_overflow_unsigned
;
9545 if (howto
->complain_on_overflow
!= complain
)
9548 alt_howto
.complain_on_overflow
= complain
;
9553 if (r_type
== R_PPC_REL16DX_HA
)
9555 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9556 if (rel
->r_offset
+ 4 > input_section
->size
)
9557 r
= bfd_reloc_outofrange
;
9562 relocation
+= addend
;
9563 relocation
-= (rel
->r_offset
9564 + input_section
->output_offset
9565 + input_section
->output_section
->vma
);
9567 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
9569 insn
|= (relocation
& 0xffc1) | ((relocation
& 0x3e) << 15);
9570 bfd_put_32 (input_bfd
, insn
, contents
+ rel
->r_offset
);
9575 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
9576 rel
->r_offset
, relocation
, addend
);
9578 if (r
!= bfd_reloc_ok
)
9580 if (r
== bfd_reloc_overflow
)
9583 /* On code like "if (foo) foo();" don't report overflow
9584 on a branch to zero when foo is undefined. */
9587 && (h
->root
.type
== bfd_link_hash_undefweak
9588 || h
->root
.type
== bfd_link_hash_undefined
)
9589 && is_branch_reloc (r_type
)))
9590 info
->callbacks
->reloc_overflow
9591 (info
, (h
? &h
->root
: NULL
), sym_name
, howto
->name
,
9592 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
);
9596 info
->callbacks
->einfo
9597 (_("%P: %H: %s reloc against `%s': error %d\n"),
9598 input_bfd
, input_section
, rel
->r_offset
,
9599 howto
->name
, sym_name
, (int) r
);
9610 Elf_Internal_Shdr
*rel_hdr
;
9611 size_t deleted
= rel
- wrel
;
9613 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
->output_section
);
9614 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9615 if (rel_hdr
->sh_size
== 0)
9617 /* It is too late to remove an empty reloc section. Leave
9619 ??? What is wrong with an empty section??? */
9620 rel_hdr
->sh_size
= rel_hdr
->sh_entsize
;
9625 rel_hdr
= _bfd_elf_single_rel_hdr (input_section
);
9626 rel_hdr
->sh_size
-= rel_hdr
->sh_entsize
* deleted
;
9627 input_section
->reloc_count
-= deleted
;
9631 fprintf (stderr
, "\n");
9634 if (input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9635 && input_section
->size
!= input_section
->rawsize
9636 && (strcmp (input_section
->output_section
->name
, ".init") == 0
9637 || strcmp (input_section
->output_section
->name
, ".fini") == 0))
9639 /* Branch around the trampolines. */
9640 unsigned int insn
= B
+ input_section
->size
- input_section
->rawsize
;
9641 bfd_put_32 (input_bfd
, insn
, contents
+ input_section
->rawsize
);
9644 if (htab
->params
->ppc476_workaround
9645 && input_section
->sec_info_type
== SEC_INFO_TYPE_TARGET
9646 && (!bfd_link_relocatable (info
)
9647 || (input_section
->output_section
->alignment_power
9648 >= htab
->params
->pagesize_p2
)))
9650 bfd_vma start_addr
, end_addr
, addr
;
9651 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
9653 if (relax_info
->workaround_size
!= 0)
9659 bfd_put_32 (input_bfd
, BA
, fill
);
9660 p
= contents
+ input_section
->size
- relax_info
->workaround_size
;
9661 n
= relax_info
->workaround_size
>> 2;
9664 memcpy (p
, fill
, 4);
9669 /* The idea is: Replace the last instruction on a page with a
9670 branch to a patch area. Put the insn there followed by a
9671 branch back to the next page. Complicated a little by
9672 needing to handle moved conditional branches, and by not
9673 wanting to touch data-in-text. */
9675 start_addr
= (input_section
->output_section
->vma
9676 + input_section
->output_offset
);
9677 end_addr
= (start_addr
+ input_section
->size
9678 - relax_info
->workaround_size
);
9679 for (addr
= ((start_addr
& -pagesize
) + pagesize
- 4);
9683 bfd_vma offset
= addr
- start_addr
;
9684 Elf_Internal_Rela
*lo
, *hi
;
9685 bfd_boolean is_data
;
9686 bfd_vma patch_off
, patch_addr
;
9689 /* Do we have a data reloc at this offset? If so, leave
9697 rel
= lo
+ (hi
- lo
) / 2;
9698 if (rel
->r_offset
< offset
)
9700 else if (rel
->r_offset
> offset
+ 3)
9704 switch (ELF32_R_TYPE (rel
->r_info
))
9721 /* Some instructions can be left alone too. Unconditional
9722 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9723 avoid the icache failure.
9725 The problem occurs due to prefetch across a page boundary
9726 where stale instructions can be fetched from the next
9727 page, and the mechanism for flushing these bad
9728 instructions fails under certain circumstances. The
9729 unconditional branches:
9730 1) Branch: b, bl, ba, bla,
9731 2) Branch Conditional: bc, bca, bcl, bcla,
9732 3) Branch Conditional to Link Register: bclr, bclrl,
9733 where (2) and (3) have BO=0x14 making them unconditional,
9734 prevent the bad prefetch because the prefetch itself is
9735 affected by these instructions. This happens even if the
9736 instruction is not executed.
9741 . addi 9,9,new_page@l
9748 The bctr is not predicted taken due to ctr not being
9749 ready, so prefetch continues on past the bctr into the
9750 new page which might have stale instructions. If they
9751 fail to be flushed, then they will be executed after the
9752 bctr executes. Either of the following modifications
9753 prevent the bad prefetch from happening in the first
9756 . lis 9,new_page@ha lis 9,new_page@ha
9757 . addi 9,9,new_page@l addi 9,9,new_page@l
9760 . nop b somewhere_else
9761 . b somewhere_else nop
9762 . new_page: new_page:
9764 insn
= bfd_get_32 (input_bfd
, contents
+ offset
);
9765 if ((insn
& (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9766 || ((insn
& (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9767 && (insn
& (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9768 || ((insn
& (0x3f << 26)) == (19u << 26)
9769 && (insn
& (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9770 && (insn
& (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9773 patch_addr
= (start_addr
+ input_section
->size
9774 - relax_info
->workaround_size
);
9775 patch_addr
= (patch_addr
+ 15) & -16;
9776 patch_off
= patch_addr
- start_addr
;
9777 bfd_put_32 (input_bfd
, B
+ patch_off
- offset
, contents
+ offset
);
9780 && rel
->r_offset
>= offset
9781 && rel
->r_offset
< offset
+ 4)
9785 /* If the insn we are patching had a reloc, adjust the
9786 reloc r_offset so that the reloc applies to the moved
9787 location. This matters for -r and --emit-relocs. */
9788 if (rel
+ 1 != relend
)
9790 Elf_Internal_Rela tmp
= *rel
;
9792 /* Keep the relocs sorted by r_offset. */
9793 memmove (rel
, rel
+ 1, (relend
- (rel
+ 1)) * sizeof (*rel
));
9796 relend
[-1].r_offset
+= patch_off
- offset
;
9798 /* Adjust REL16 addends too. */
9799 switch (ELF32_R_TYPE (relend
[-1].r_info
))
9802 case R_PPC_REL16_LO
:
9803 case R_PPC_REL16_HI
:
9804 case R_PPC_REL16_HA
:
9805 relend
[-1].r_addend
+= patch_off
- offset
;
9811 /* If we are building a PIE or shared library with
9812 non-PIC objects, perhaps we had a dynamic reloc too?
9813 If so, the dynamic reloc must move with the insn. */
9814 sreloc
= elf_section_data (input_section
)->sreloc
;
9817 Elf32_External_Rela
*slo
, *shi
, *srelend
;
9820 slo
= (Elf32_External_Rela
*) sreloc
->contents
;
9821 shi
= srelend
= slo
+ sreloc
->reloc_count
;
9822 soffset
= (offset
+ input_section
->output_section
->vma
9823 + input_section
->output_offset
);
9826 Elf32_External_Rela
*srel
= slo
+ (shi
- slo
) / 2;
9827 bfd_elf32_swap_reloca_in (output_bfd
, (bfd_byte
*) srel
,
9829 if (outrel
.r_offset
< soffset
)
9831 else if (outrel
.r_offset
> soffset
+ 3)
9835 if (srel
+ 1 != srelend
)
9837 memmove (srel
, srel
+ 1,
9838 (srelend
- (srel
+ 1)) * sizeof (*srel
));
9841 outrel
.r_offset
+= patch_off
- offset
;
9842 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
9852 if ((insn
& (0x3f << 26)) == (16u << 26) /* bc */
9853 && (insn
& 2) == 0 /* relative */)
9855 bfd_vma delta
= ((insn
& 0xfffc) ^ 0x8000) - 0x8000;
9857 delta
+= offset
- patch_off
;
9858 if (bfd_link_relocatable (info
) && rel
!= NULL
)
9860 if (!bfd_link_relocatable (info
) && rel
!= NULL
)
9862 enum elf_ppc_reloc_type r_type
;
9864 r_type
= ELF32_R_TYPE (relend
[-1].r_info
);
9865 if (r_type
== R_PPC_REL14_BRTAKEN
)
9866 insn
|= BRANCH_PREDICT_BIT
;
9867 else if (r_type
== R_PPC_REL14_BRNTAKEN
)
9868 insn
&= ~BRANCH_PREDICT_BIT
;
9870 BFD_ASSERT (r_type
== R_PPC_REL14
);
9872 if ((r_type
== R_PPC_REL14_BRTAKEN
9873 || r_type
== R_PPC_REL14_BRNTAKEN
)
9874 && delta
+ 0x8000 < 0x10000
9875 && (bfd_signed_vma
) delta
< 0)
9876 insn
^= BRANCH_PREDICT_BIT
;
9878 if (delta
+ 0x8000 < 0x10000)
9880 bfd_put_32 (input_bfd
,
9881 (insn
& ~0xfffc) | (delta
& 0xfffc),
9882 contents
+ patch_off
);
9884 bfd_put_32 (input_bfd
,
9885 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9886 contents
+ patch_off
);
9893 unsigned int r_sym
= ELF32_R_SYM (relend
[-1].r_info
);
9895 relend
[-1].r_offset
+= 8;
9896 relend
[-1].r_info
= ELF32_R_INFO (r_sym
, R_PPC_REL24
);
9898 bfd_put_32 (input_bfd
,
9899 (insn
& ~0xfffc) | 8,
9900 contents
+ patch_off
);
9902 bfd_put_32 (input_bfd
,
9903 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9904 contents
+ patch_off
);
9906 bfd_put_32 (input_bfd
,
9907 B
| ((delta
- 8) & 0x3fffffc),
9908 contents
+ patch_off
);
9914 bfd_put_32 (input_bfd
, insn
, contents
+ patch_off
);
9916 bfd_put_32 (input_bfd
,
9917 B
| ((offset
+ 4 - patch_off
) & 0x3fffffc),
9918 contents
+ patch_off
);
9921 BFD_ASSERT (patch_off
<= input_section
->size
);
9922 relax_info
->workaround_size
= input_section
->size
- patch_off
;
9929 /* Finish up dynamic symbol handling. We set the contents of various
9930 dynamic sections here. */
9933 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
9934 struct bfd_link_info
*info
,
9935 struct elf_link_hash_entry
*h
,
9936 Elf_Internal_Sym
*sym
)
9938 struct ppc_elf_link_hash_table
*htab
;
9939 struct plt_entry
*ent
;
9940 bfd_boolean doneone
;
9943 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
9944 h
->root
.root
.string
);
9947 htab
= ppc_elf_hash_table (info
);
9948 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
9951 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9952 if (ent
->plt
.offset
!= (bfd_vma
) -1)
9956 Elf_Internal_Rela rela
;
9958 bfd_vma reloc_index
;
9960 if (htab
->plt_type
== PLT_NEW
9961 || !htab
->elf
.dynamic_sections_created
9962 || h
->dynindx
== -1)
9963 reloc_index
= ent
->plt
.offset
/ 4;
9966 reloc_index
= ((ent
->plt
.offset
- htab
->plt_initial_entry_size
)
9967 / htab
->plt_slot_size
);
9968 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
9969 && htab
->plt_type
== PLT_OLD
)
9970 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
9973 /* This symbol has an entry in the procedure linkage table.
9975 if (htab
->plt_type
== PLT_VXWORKS
9976 && htab
->elf
.dynamic_sections_created
9977 && h
->dynindx
!= -1)
9980 const bfd_vma
*plt_entry
;
9982 /* The first three entries in .got.plt are reserved. */
9983 got_offset
= (reloc_index
+ 3) * 4;
9985 /* Use the right PLT. */
9986 plt_entry
= bfd_link_pic (info
) ? ppc_elf_vxworks_pic_plt_entry
9987 : ppc_elf_vxworks_plt_entry
;
9989 /* Fill in the .plt on VxWorks. */
9990 if (bfd_link_pic (info
))
9992 bfd_put_32 (output_bfd
,
9993 plt_entry
[0] | PPC_HA (got_offset
),
9994 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
9995 bfd_put_32 (output_bfd
,
9996 plt_entry
[1] | PPC_LO (got_offset
),
9997 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
10001 bfd_vma got_loc
= got_offset
+ SYM_VAL (htab
->elf
.hgot
);
10003 bfd_put_32 (output_bfd
,
10004 plt_entry
[0] | PPC_HA (got_loc
),
10005 htab
->plt
->contents
+ ent
->plt
.offset
+ 0);
10006 bfd_put_32 (output_bfd
,
10007 plt_entry
[1] | PPC_LO (got_loc
),
10008 htab
->plt
->contents
+ ent
->plt
.offset
+ 4);
10011 bfd_put_32 (output_bfd
, plt_entry
[2],
10012 htab
->plt
->contents
+ ent
->plt
.offset
+ 8);
10013 bfd_put_32 (output_bfd
, plt_entry
[3],
10014 htab
->plt
->contents
+ ent
->plt
.offset
+ 12);
10016 /* This instruction is an immediate load. The value loaded is
10017 the byte offset of the R_PPC_JMP_SLOT relocation from the
10018 start of the .rela.plt section. The value is stored in the
10019 low-order 16 bits of the load instruction. */
10020 /* NOTE: It appears that this is now an index rather than a
10021 prescaled offset. */
10022 bfd_put_32 (output_bfd
,
10023 plt_entry
[4] | reloc_index
,
10024 htab
->plt
->contents
+ ent
->plt
.offset
+ 16);
10025 /* This instruction is a PC-relative branch whose target is
10026 the start of the PLT section. The address of this branch
10027 instruction is 20 bytes beyond the start of this PLT entry.
10028 The address is encoded in bits 6-29, inclusive. The value
10029 stored is right-shifted by two bits, permitting a 26-bit
10031 bfd_put_32 (output_bfd
,
10033 | (-(ent
->plt
.offset
+ 20) & 0x03fffffc)),
10034 htab
->plt
->contents
+ ent
->plt
.offset
+ 20);
10035 bfd_put_32 (output_bfd
, plt_entry
[6],
10036 htab
->plt
->contents
+ ent
->plt
.offset
+ 24);
10037 bfd_put_32 (output_bfd
, plt_entry
[7],
10038 htab
->plt
->contents
+ ent
->plt
.offset
+ 28);
10040 /* Fill in the GOT entry corresponding to this PLT slot with
10041 the address immediately after the "bctr" instruction
10042 in this PLT entry. */
10043 bfd_put_32 (output_bfd
, (htab
->plt
->output_section
->vma
10044 + htab
->plt
->output_offset
10045 + ent
->plt
.offset
+ 16),
10046 htab
->sgotplt
->contents
+ got_offset
);
10048 if (!bfd_link_pic (info
))
10050 /* Fill in a couple of entries in .rela.plt.unloaded. */
10051 loc
= htab
->srelplt2
->contents
10052 + ((VXWORKS_PLTRESOLVE_RELOCS
+ reloc_index
10053 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS
)
10054 * sizeof (Elf32_External_Rela
));
10056 /* Provide the @ha relocation for the first instruction. */
10057 rela
.r_offset
= (htab
->plt
->output_section
->vma
10058 + htab
->plt
->output_offset
10059 + ent
->plt
.offset
+ 2);
10060 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10062 rela
.r_addend
= got_offset
;
10063 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10064 loc
+= sizeof (Elf32_External_Rela
);
10066 /* Provide the @l relocation for the second instruction. */
10067 rela
.r_offset
= (htab
->plt
->output_section
->vma
10068 + htab
->plt
->output_offset
10069 + ent
->plt
.offset
+ 6);
10070 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
,
10072 rela
.r_addend
= got_offset
;
10073 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10074 loc
+= sizeof (Elf32_External_Rela
);
10076 /* Provide a relocation for the GOT entry corresponding to this
10077 PLT slot. Point it at the middle of the .plt entry. */
10078 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
10079 + htab
->sgotplt
->output_offset
10081 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
,
10083 rela
.r_addend
= ent
->plt
.offset
+ 16;
10084 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10087 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10088 In particular, the offset for the relocation is not the
10089 address of the PLT entry for this function, as specified
10090 by the ABI. Instead, the offset is set to the address of
10091 the GOT slot for this function. See EABI 4.4.4.1. */
10092 rela
.r_offset
= (htab
->sgotplt
->output_section
->vma
10093 + htab
->sgotplt
->output_offset
10099 asection
*splt
= htab
->plt
;
10100 if (!htab
->elf
.dynamic_sections_created
10101 || h
->dynindx
== -1)
10104 rela
.r_offset
= (splt
->output_section
->vma
10105 + splt
->output_offset
10106 + ent
->plt
.offset
);
10107 if (htab
->plt_type
== PLT_OLD
10108 || !htab
->elf
.dynamic_sections_created
10109 || h
->dynindx
== -1)
10111 /* We don't need to fill in the .plt. The ppc dynamic
10112 linker will fill it in. */
10116 bfd_vma val
= (htab
->glink_pltresolve
+ ent
->plt
.offset
10117 + htab
->glink
->output_section
->vma
10118 + htab
->glink
->output_offset
);
10119 bfd_put_32 (output_bfd
, val
,
10120 splt
->contents
+ ent
->plt
.offset
);
10124 /* Fill in the entry in the .rela.plt section. */
10126 if (!htab
->elf
.dynamic_sections_created
10127 || h
->dynindx
== -1)
10129 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
10131 && (h
->root
.type
== bfd_link_hash_defined
10132 || h
->root
.type
== bfd_link_hash_defweak
));
10133 rela
.r_info
= ELF32_R_INFO (0, R_PPC_IRELATIVE
);
10134 rela
.r_addend
= SYM_VAL (h
);
10137 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
10139 if (!htab
->elf
.dynamic_sections_created
10140 || h
->dynindx
== -1)
10141 loc
= (htab
->reliplt
->contents
10142 + (htab
->reliplt
->reloc_count
++
10143 * sizeof (Elf32_External_Rela
)));
10145 loc
= (htab
->relplt
->contents
10146 + reloc_index
* sizeof (Elf32_External_Rela
));
10147 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10149 if (!h
->def_regular
)
10151 /* Mark the symbol as undefined, rather than as
10152 defined in the .plt section. Leave the value if
10153 there were any relocations where pointer equality
10154 matters (this is a clue for the dynamic linker, to
10155 make function pointer comparisons work between an
10156 application and shared library), otherwise set it
10158 sym
->st_shndx
= SHN_UNDEF
;
10159 if (!h
->pointer_equality_needed
)
10161 else if (!h
->ref_regular_nonweak
)
10163 /* This breaks function pointer comparisons, but
10164 that is better than breaking tests for a NULL
10165 function pointer. */
10169 else if (h
->type
== STT_GNU_IFUNC
10170 && !bfd_link_pic (info
))
10172 /* Set the value of ifunc symbols in a non-pie
10173 executable to the glink entry. This is to avoid
10174 text relocations. We can't do this for ifunc in
10175 allocate_dynrelocs, as we do for normal dynamic
10176 function symbols with plt entries, because we need
10177 to keep the original value around for the ifunc
10179 sym
->st_shndx
= (_bfd_elf_section_from_bfd_section
10180 (output_bfd
, htab
->glink
->output_section
));
10181 sym
->st_value
= (ent
->glink_offset
10182 + htab
->glink
->output_offset
10183 + htab
->glink
->output_section
->vma
);
10188 if (htab
->plt_type
== PLT_NEW
10189 || !htab
->elf
.dynamic_sections_created
10190 || h
->dynindx
== -1)
10193 asection
*splt
= htab
->plt
;
10194 if (!htab
->elf
.dynamic_sections_created
10195 || h
->dynindx
== -1)
10198 p
= (unsigned char *) htab
->glink
->contents
+ ent
->glink_offset
;
10200 if (h
== htab
->tls_get_addr
&& !htab
->params
->no_tls_get_addr_opt
)
10202 bfd_put_32 (output_bfd
, LWZ_11_3
, p
);
10204 bfd_put_32 (output_bfd
, LWZ_12_3
+ 4, p
);
10206 bfd_put_32 (output_bfd
, MR_0_3
, p
);
10208 bfd_put_32 (output_bfd
, CMPWI_11_0
, p
);
10210 bfd_put_32 (output_bfd
, ADD_3_12_2
, p
);
10212 bfd_put_32 (output_bfd
, BEQLR
, p
);
10214 bfd_put_32 (output_bfd
, MR_3_0
, p
);
10216 bfd_put_32 (output_bfd
, NOP
, p
);
10220 write_glink_stub (ent
, splt
, p
, info
);
10222 if (!bfd_link_pic (info
))
10223 /* We only need one non-PIC glink stub. */
10233 Elf_Internal_Rela rela
;
10236 /* This symbols needs a copy reloc. Set it up. */
10239 fprintf (stderr
, ", copy");
10242 BFD_ASSERT (h
->dynindx
!= -1);
10244 if (ppc_elf_hash_entry (h
)->has_sda_refs
)
10248 BFD_ASSERT (s
!= NULL
);
10250 rela
.r_offset
= SYM_VAL (h
);
10251 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
10253 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
10254 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10258 fprintf (stderr
, "\n");
10264 static enum elf_reloc_type_class
10265 ppc_elf_reloc_type_class (const struct bfd_link_info
*info
,
10266 const asection
*rel_sec
,
10267 const Elf_Internal_Rela
*rela
)
10269 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
10271 if (rel_sec
== htab
->reliplt
)
10272 return reloc_class_ifunc
;
10274 switch (ELF32_R_TYPE (rela
->r_info
))
10276 case R_PPC_RELATIVE
:
10277 return reloc_class_relative
;
10278 case R_PPC_JMP_SLOT
:
10279 return reloc_class_plt
;
10281 return reloc_class_copy
;
10283 return reloc_class_normal
;
10287 /* Finish up the dynamic sections. */
10290 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
10291 struct bfd_link_info
*info
)
10295 struct ppc_elf_link_hash_table
*htab
;
10298 bfd_boolean ret
= TRUE
;
10301 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
10304 htab
= ppc_elf_hash_table (info
);
10305 dynobj
= elf_hash_table (info
)->dynobj
;
10306 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
10307 if (htab
->is_vxworks
)
10308 splt
= bfd_get_linker_section (dynobj
, ".plt");
10313 if (htab
->elf
.hgot
!= NULL
)
10314 got
= SYM_VAL (htab
->elf
.hgot
);
10316 if (htab
->elf
.dynamic_sections_created
)
10318 Elf32_External_Dyn
*dyncon
, *dynconend
;
10320 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
10322 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
10323 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10324 for (; dyncon
< dynconend
; dyncon
++)
10326 Elf_Internal_Dyn dyn
;
10329 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10334 if (htab
->is_vxworks
)
10338 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10342 dyn
.d_un
.d_val
= htab
->relplt
->size
;
10347 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
10351 dyn
.d_un
.d_ptr
= got
;
10355 if (htab
->is_vxworks
)
10358 dyn
.d_un
.d_ptr
-= htab
->relplt
->size
;
10364 if (htab
->is_vxworks
10365 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
10370 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10374 if (htab
->got
!= NULL
)
10376 if (htab
->elf
.hgot
->root
.u
.def
.section
== htab
->got
10377 || htab
->elf
.hgot
->root
.u
.def
.section
== htab
->sgotplt
)
10379 unsigned char *p
= htab
->elf
.hgot
->root
.u
.def
.section
->contents
;
10381 p
+= htab
->elf
.hgot
->root
.u
.def
.value
;
10382 if (htab
->plt_type
== PLT_OLD
)
10384 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10385 so that a function can easily find the address of
10386 _GLOBAL_OFFSET_TABLE_. */
10387 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
- 4
10388 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10389 bfd_put_32 (output_bfd
, 0x4e800021, p
- 4);
10394 bfd_vma val
= sdyn
->output_section
->vma
+ sdyn
->output_offset
;
10395 BFD_ASSERT (htab
->elf
.hgot
->root
.u
.def
.value
10396 < htab
->elf
.hgot
->root
.u
.def
.section
->size
);
10397 bfd_put_32 (output_bfd
, val
, p
);
10402 info
->callbacks
->einfo (_("%P: %s not defined in linker created %s\n"),
10403 htab
->elf
.hgot
->root
.root
.string
,
10404 (htab
->sgotplt
!= NULL
10405 ? htab
->sgotplt
->name
: htab
->got
->name
));
10406 bfd_set_error (bfd_error_bad_value
);
10410 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
10413 /* Fill in the first entry in the VxWorks procedure linkage table. */
10414 if (splt
&& splt
->size
> 0)
10416 /* Use the right PLT. */
10417 const bfd_vma
*plt_entry
= (bfd_link_pic (info
)
10418 ? ppc_elf_vxworks_pic_plt0_entry
10419 : ppc_elf_vxworks_plt0_entry
);
10421 if (!bfd_link_pic (info
))
10423 bfd_vma got_value
= SYM_VAL (htab
->elf
.hgot
);
10425 bfd_put_32 (output_bfd
, plt_entry
[0] | PPC_HA (got_value
),
10426 splt
->contents
+ 0);
10427 bfd_put_32 (output_bfd
, plt_entry
[1] | PPC_LO (got_value
),
10428 splt
->contents
+ 4);
10432 bfd_put_32 (output_bfd
, plt_entry
[0], splt
->contents
+ 0);
10433 bfd_put_32 (output_bfd
, plt_entry
[1], splt
->contents
+ 4);
10435 bfd_put_32 (output_bfd
, plt_entry
[2], splt
->contents
+ 8);
10436 bfd_put_32 (output_bfd
, plt_entry
[3], splt
->contents
+ 12);
10437 bfd_put_32 (output_bfd
, plt_entry
[4], splt
->contents
+ 16);
10438 bfd_put_32 (output_bfd
, plt_entry
[5], splt
->contents
+ 20);
10439 bfd_put_32 (output_bfd
, plt_entry
[6], splt
->contents
+ 24);
10440 bfd_put_32 (output_bfd
, plt_entry
[7], splt
->contents
+ 28);
10442 if (! bfd_link_pic (info
))
10444 Elf_Internal_Rela rela
;
10447 loc
= htab
->srelplt2
->contents
;
10449 /* Output the @ha relocation for the first instruction. */
10450 rela
.r_offset
= (htab
->plt
->output_section
->vma
10451 + htab
->plt
->output_offset
10453 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10455 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10456 loc
+= sizeof (Elf32_External_Rela
);
10458 /* Output the @l relocation for the second instruction. */
10459 rela
.r_offset
= (htab
->plt
->output_section
->vma
10460 + htab
->plt
->output_offset
10462 rela
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10464 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
10465 loc
+= sizeof (Elf32_External_Rela
);
10467 /* Fix up the remaining relocations. They may have the wrong
10468 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10469 in which symbols were output. */
10470 while (loc
< htab
->srelplt2
->contents
+ htab
->srelplt2
->size
)
10472 Elf_Internal_Rela rel
;
10474 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10475 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_HA
);
10476 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10477 loc
+= sizeof (Elf32_External_Rela
);
10479 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10480 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hgot
->indx
, R_PPC_ADDR16_LO
);
10481 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10482 loc
+= sizeof (Elf32_External_Rela
);
10484 bfd_elf32_swap_reloc_in (output_bfd
, loc
, &rel
);
10485 rel
.r_info
= ELF32_R_INFO (htab
->elf
.hplt
->indx
, R_PPC_ADDR32
);
10486 bfd_elf32_swap_reloc_out (output_bfd
, &rel
, loc
);
10487 loc
+= sizeof (Elf32_External_Rela
);
10492 if (htab
->glink
!= NULL
10493 && htab
->glink
->contents
!= NULL
10494 && htab
->elf
.dynamic_sections_created
)
10497 unsigned char *endp
;
10502 * PIC glink code is the following:
10504 * # ith PLT code stub.
10505 * addis 11,30,(plt+(i-1)*4-got)@ha
10506 * lwz 11,(plt+(i-1)*4-got)@l(11)
10510 * # A table of branches, one for each plt entry.
10511 * # The idea is that the plt call stub loads ctr and r11 with these
10512 * # addresses, so (r11 - res_0) gives the plt index * 4.
10513 * res_0: b PLTresolve
10514 * res_1: b PLTresolve
10516 * # Some number of entries towards the end can be nops
10522 * addis 11,11,(1f-res_0)@ha
10525 * 1: addi 11,11,(1b-res_0)@l
10528 * sub 11,11,12 # r11 = index * 4
10529 * addis 12,12,(got+4-1b)@ha
10530 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10531 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10534 * add 11,0,11 # r11 = index * 12 = reloc offset.
10537 static const unsigned int pic_plt_resolve
[] =
10558 * Non-PIC glink code is a little simpler.
10560 * # ith PLT code stub.
10561 * lis 11,(plt+(i-1)*4)@ha
10562 * lwz 11,(plt+(i-1)*4)@l(11)
10566 * The branch table is the same, then comes
10569 * lis 12,(got+4)@ha
10570 * addis 11,11,(-res_0)@ha
10571 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10572 * addi 11,11,(-res_0)@l # r11 = index * 4
10575 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10576 * add 11,0,11 # r11 = index * 12 = reloc offset.
10579 static const unsigned int plt_resolve
[] =
10599 if (ARRAY_SIZE (pic_plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10601 if (ARRAY_SIZE (plt_resolve
) != GLINK_PLTRESOLVE
/ 4)
10604 /* Build the branch table, one for each plt entry (less one),
10605 and perhaps some padding. */
10606 p
= htab
->glink
->contents
;
10607 p
+= htab
->glink_pltresolve
;
10608 endp
= htab
->glink
->contents
;
10609 endp
+= htab
->glink
->size
- GLINK_PLTRESOLVE
;
10610 while (p
< endp
- (htab
->params
->ppc476_workaround
? 0 : 8 * 4))
10612 bfd_put_32 (output_bfd
, B
+ endp
- p
, p
);
10617 bfd_put_32 (output_bfd
, NOP
, p
);
10621 res0
= (htab
->glink_pltresolve
10622 + htab
->glink
->output_section
->vma
10623 + htab
->glink
->output_offset
);
10625 if (htab
->params
->ppc476_workaround
)
10627 /* Ensure that a call stub at the end of a page doesn't
10628 result in prefetch over the end of the page into the
10629 glink branch table. */
10630 bfd_vma pagesize
= (bfd_vma
) 1 << htab
->params
->pagesize_p2
;
10632 bfd_vma glink_start
= (htab
->glink
->output_section
->vma
10633 + htab
->glink
->output_offset
);
10635 for (page_addr
= res0
& -pagesize
;
10636 page_addr
> glink_start
;
10637 page_addr
-= pagesize
)
10639 /* We have a plt call stub that may need fixing. */
10643 loc
= htab
->glink
->contents
+ page_addr
- 4 - glink_start
;
10644 insn
= bfd_get_32 (output_bfd
, loc
);
10647 /* By alignment, we know that there must be at least
10648 one other call stub before this one. */
10649 insn
= bfd_get_32 (output_bfd
, loc
- 16);
10651 bfd_put_32 (output_bfd
, B
| (-16 & 0x3fffffc), loc
);
10653 bfd_put_32 (output_bfd
, B
| (-20 & 0x3fffffc), loc
);
10658 /* Last comes the PLTresolve stub. */
10659 if (bfd_link_pic (info
))
10663 for (i
= 0; i
< ARRAY_SIZE (pic_plt_resolve
); i
++)
10665 unsigned int insn
= pic_plt_resolve
[i
];
10667 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10669 bfd_put_32 (output_bfd
, insn
, p
);
10672 p
-= 4 * ARRAY_SIZE (pic_plt_resolve
);
10674 bcl
= (htab
->glink
->size
- GLINK_PLTRESOLVE
+ 3*4
10675 + htab
->glink
->output_section
->vma
10676 + htab
->glink
->output_offset
);
10678 bfd_put_32 (output_bfd
,
10679 ADDIS_11_11
+ PPC_HA (bcl
- res0
), p
+ 0*4);
10680 bfd_put_32 (output_bfd
,
10681 ADDI_11_11
+ PPC_LO (bcl
- res0
), p
+ 3*4);
10682 bfd_put_32 (output_bfd
,
10683 ADDIS_12_12
+ PPC_HA (got
+ 4 - bcl
), p
+ 7*4);
10684 if (PPC_HA (got
+ 4 - bcl
) == PPC_HA (got
+ 8 - bcl
))
10686 bfd_put_32 (output_bfd
,
10687 LWZ_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10688 bfd_put_32 (output_bfd
,
10689 LWZ_12_12
+ PPC_LO (got
+ 8 - bcl
), p
+ 9*4);
10693 bfd_put_32 (output_bfd
,
10694 LWZU_0_12
+ PPC_LO (got
+ 4 - bcl
), p
+ 8*4);
10695 bfd_put_32 (output_bfd
,
10696 LWZ_12_12
+ 4, p
+ 9*4);
10701 for (i
= 0; i
< ARRAY_SIZE (plt_resolve
); i
++)
10703 unsigned int insn
= plt_resolve
[i
];
10705 if (htab
->params
->ppc476_workaround
&& insn
== NOP
)
10707 bfd_put_32 (output_bfd
, insn
, p
);
10710 p
-= 4 * ARRAY_SIZE (plt_resolve
);
10712 bfd_put_32 (output_bfd
,
10713 LIS_12
+ PPC_HA (got
+ 4), p
+ 0*4);
10714 bfd_put_32 (output_bfd
,
10715 ADDIS_11_11
+ PPC_HA (-res0
), p
+ 1*4);
10716 bfd_put_32 (output_bfd
,
10717 ADDI_11_11
+ PPC_LO (-res0
), p
+ 3*4);
10718 if (PPC_HA (got
+ 4) == PPC_HA (got
+ 8))
10720 bfd_put_32 (output_bfd
,
10721 LWZ_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10722 bfd_put_32 (output_bfd
,
10723 LWZ_12_12
+ PPC_LO (got
+ 8), p
+ 6*4);
10727 bfd_put_32 (output_bfd
,
10728 LWZU_0_12
+ PPC_LO (got
+ 4), p
+ 2*4);
10729 bfd_put_32 (output_bfd
,
10730 LWZ_12_12
+ 4, p
+ 6*4);
10735 if (htab
->glink_eh_frame
!= NULL
10736 && htab
->glink_eh_frame
->contents
!= NULL
)
10738 unsigned char *p
= htab
->glink_eh_frame
->contents
;
10741 p
+= sizeof (glink_eh_frame_cie
);
10746 /* Offset to .glink. */
10747 val
= (htab
->glink
->output_section
->vma
10748 + htab
->glink
->output_offset
);
10749 val
-= (htab
->glink_eh_frame
->output_section
->vma
10750 + htab
->glink_eh_frame
->output_offset
);
10751 val
-= p
- htab
->glink_eh_frame
->contents
;
10752 bfd_put_32 (htab
->elf
.dynobj
, val
, p
);
10754 if (htab
->glink_eh_frame
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
10755 && !_bfd_elf_write_section_eh_frame (output_bfd
, info
,
10756 htab
->glink_eh_frame
,
10757 htab
->glink_eh_frame
->contents
))
10764 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10765 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10766 #define TARGET_BIG_SYM powerpc_elf32_vec
10767 #define TARGET_BIG_NAME "elf32-powerpc"
10768 #define ELF_ARCH bfd_arch_powerpc
10769 #define ELF_TARGET_ID PPC32_ELF_DATA
10770 #define ELF_MACHINE_CODE EM_PPC
10771 #ifdef __QNXTARGET__
10772 #define ELF_MAXPAGESIZE 0x1000
10773 #define ELF_COMMONPAGESIZE 0x1000
10775 #define ELF_MAXPAGESIZE 0x10000
10776 #define ELF_COMMONPAGESIZE 0x10000
10778 #define ELF_MINPAGESIZE 0x1000
10779 #define elf_info_to_howto ppc_elf_info_to_howto
10781 #ifdef EM_CYGNUS_POWERPC
10782 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10786 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10789 #define elf_backend_plt_not_loaded 1
10790 #define elf_backend_can_gc_sections 1
10791 #define elf_backend_can_refcount 1
10792 #define elf_backend_rela_normal 1
10793 #define elf_backend_caches_rawsize 1
10795 #define bfd_elf32_mkobject ppc_elf_mkobject
10796 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10797 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10798 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10799 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10800 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10801 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10802 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10804 #define elf_backend_object_p ppc_elf_object_p
10805 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10806 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10807 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10808 #define elf_backend_relocate_section ppc_elf_relocate_section
10809 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10810 #define elf_backend_check_relocs ppc_elf_check_relocs
10811 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10812 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10813 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10814 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10815 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10816 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10817 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10818 #define elf_backend_fake_sections ppc_elf_fake_sections
10819 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10820 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10821 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10822 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10823 #define elf_backend_write_core_note ppc_elf_write_core_note
10824 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10825 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10826 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10827 #define elf_backend_write_section ppc_elf_write_section
10828 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10829 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10830 #define elf_backend_action_discarded ppc_elf_action_discarded
10831 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10832 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10833 #define elf_backend_section_processing ppc_elf_section_processing
10835 #include "elf32-target.h"
10837 /* FreeBSD Target */
10839 #undef TARGET_LITTLE_SYM
10840 #undef TARGET_LITTLE_NAME
10842 #undef TARGET_BIG_SYM
10843 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10844 #undef TARGET_BIG_NAME
10845 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10848 #define ELF_OSABI ELFOSABI_FREEBSD
10851 #define elf32_bed elf32_powerpc_fbsd_bed
10853 #include "elf32-target.h"
10855 /* VxWorks Target */
10857 #undef TARGET_LITTLE_SYM
10858 #undef TARGET_LITTLE_NAME
10860 #undef TARGET_BIG_SYM
10861 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10862 #undef TARGET_BIG_NAME
10863 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10867 /* VxWorks uses the elf default section flags for .plt. */
10868 static const struct bfd_elf_special_section
*
10869 ppc_elf_vxworks_get_sec_type_attr (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*sec
)
10871 if (sec
->name
== NULL
)
10874 if (strcmp (sec
->name
, ".plt") == 0)
10875 return _bfd_elf_get_sec_type_attr (abfd
, sec
);
10877 return ppc_elf_get_sec_type_attr (abfd
, sec
);
10880 /* Like ppc_elf_link_hash_table_create, but overrides
10881 appropriately for VxWorks. */
10882 static struct bfd_link_hash_table
*
10883 ppc_elf_vxworks_link_hash_table_create (bfd
*abfd
)
10885 struct bfd_link_hash_table
*ret
;
10887 ret
= ppc_elf_link_hash_table_create (abfd
);
10890 struct ppc_elf_link_hash_table
*htab
10891 = (struct ppc_elf_link_hash_table
*)ret
;
10892 htab
->is_vxworks
= 1;
10893 htab
->plt_type
= PLT_VXWORKS
;
10894 htab
->plt_entry_size
= VXWORKS_PLT_ENTRY_SIZE
;
10895 htab
->plt_slot_size
= VXWORKS_PLT_ENTRY_SIZE
;
10896 htab
->plt_initial_entry_size
= VXWORKS_PLT_INITIAL_ENTRY_SIZE
;
10901 /* Tweak magic VxWorks symbols as they are loaded. */
10903 ppc_elf_vxworks_add_symbol_hook (bfd
*abfd
,
10904 struct bfd_link_info
*info
,
10905 Elf_Internal_Sym
*sym
,
10906 const char **namep ATTRIBUTE_UNUSED
,
10907 flagword
*flagsp ATTRIBUTE_UNUSED
,
10911 if (!elf_vxworks_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
,
10915 return ppc_elf_add_symbol_hook(abfd
, info
, sym
,namep
, flagsp
, secp
, valp
);
10919 ppc_elf_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
10921 ppc_elf_final_write_processing(abfd
, linker
);
10922 elf_vxworks_final_write_processing(abfd
, linker
);
10925 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10927 #undef elf_backend_want_plt_sym
10928 #define elf_backend_want_plt_sym 1
10929 #undef elf_backend_want_got_plt
10930 #define elf_backend_want_got_plt 1
10931 #undef elf_backend_got_symbol_offset
10932 #define elf_backend_got_symbol_offset 0
10933 #undef elf_backend_plt_not_loaded
10934 #define elf_backend_plt_not_loaded 0
10935 #undef elf_backend_plt_readonly
10936 #define elf_backend_plt_readonly 1
10937 #undef elf_backend_got_header_size
10938 #define elf_backend_got_header_size 12
10940 #undef bfd_elf32_get_synthetic_symtab
10942 #undef bfd_elf32_bfd_link_hash_table_create
10943 #define bfd_elf32_bfd_link_hash_table_create \
10944 ppc_elf_vxworks_link_hash_table_create
10945 #undef elf_backend_add_symbol_hook
10946 #define elf_backend_add_symbol_hook \
10947 ppc_elf_vxworks_add_symbol_hook
10948 #undef elf_backend_link_output_symbol_hook
10949 #define elf_backend_link_output_symbol_hook \
10950 elf_vxworks_link_output_symbol_hook
10951 #undef elf_backend_final_write_processing
10952 #define elf_backend_final_write_processing \
10953 ppc_elf_vxworks_final_write_processing
10954 #undef elf_backend_get_sec_type_attr
10955 #define elf_backend_get_sec_type_attr \
10956 ppc_elf_vxworks_get_sec_type_attr
10957 #undef elf_backend_emit_relocs
10958 #define elf_backend_emit_relocs \
10959 elf_vxworks_emit_relocs
10962 #define elf32_bed ppc_elf_vxworks_bed
10963 #undef elf_backend_post_process_headers
10965 #include "elf32-target.h"