1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2015 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
38 #include "elf-linux-psinfo.h"
40 typedef enum split16_format_type
47 /* RELA relocations are used here. */
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
61 /* The name of the dynamic interpreter. This is put in the .interp
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE 4*4
72 #define TLS_GET_ADDR_GLINK_SIZE 12*4
74 /* VxWorks uses its own plt layout, filled in by the static linker. */
76 /* The standard VxWorks PLT entry. */
77 #define VXWORKS_PLT_ENTRY_SIZE 32
78 static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
90 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
100 0x60000000, /* nop */
103 /* The initial VxWorks PLT entry. */
104 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
117 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
130 /* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
133 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 /* The number of relocations in the PLTResolve slot. */
136 #define VXWORKS_PLTRESOLVE_RELOCS 2
137 /* The number of relocations in the PLTResolve slot when when creating
139 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
141 /* Some instructions. */
142 #define ADDIS_11_11 0x3d6b0000
143 #define ADDIS_11_30 0x3d7e0000
144 #define ADDIS_12_12 0x3d8c0000
145 #define ADDI_11_11 0x396b0000
146 #define ADD_0_11_11 0x7c0b5a14
147 #define ADD_3_12_2 0x7c6c1214
148 #define ADD_11_0_11 0x7d605a14
150 #define BA 0x48000002
151 #define BCL_20_31 0x429f0005
152 #define BCTR 0x4e800420
153 #define BEQLR 0x4d820020
154 #define CMPWI_11_0 0x2c0b0000
155 #define LIS_11 0x3d600000
156 #define LIS_12 0x3d800000
157 #define LWZU_0_12 0x840c0000
158 #define LWZ_0_12 0x800c0000
159 #define LWZ_11_3 0x81630000
160 #define LWZ_11_11 0x816b0000
161 #define LWZ_11_30 0x817e0000
162 #define LWZ_12_3 0x81830000
163 #define LWZ_12_12 0x818c0000
164 #define MR_0_3 0x7c601b78
165 #define MR_3_0 0x7c030378
166 #define MFLR_0 0x7c0802a6
167 #define MFLR_12 0x7d8802a6
168 #define MTCTR_0 0x7c0903a6
169 #define MTCTR_11 0x7d6903a6
170 #define MTLR_0 0x7c0803a6
171 #define NOP 0x60000000
172 #define SUB_11_11_12 0x7d6c5850
174 /* Offset of tp and dtp pointers from start of TLS block. */
175 #define TP_OFFSET 0x7000
176 #define DTP_OFFSET 0x8000
178 /* The value of a defined global symbol. */
179 #define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
184 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
186 static reloc_howto_type ppc_elf_howto_raw[] = {
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE, /* type */
190 3, /* size (0 = byte, 1 = short, 2 = long) */
192 FALSE, /* pc_relative */
194 complain_overflow_dont, /* complain_on_overflow */
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_NONE", /* name */
197 FALSE, /* partial_inplace */
200 FALSE), /* pcrel_offset */
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE, /* pc_relative */
209 complain_overflow_dont, /* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR32", /* name */
212 FALSE, /* partial_inplace */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE, /* pc_relative */
225 complain_overflow_signed, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC_ADDR24", /* name */
228 FALSE, /* partial_inplace */
230 0x3fffffc, /* dst_mask */
231 FALSE), /* pcrel_offset */
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16, /* type */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
238 FALSE, /* pc_relative */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC_ADDR16", /* name */
243 FALSE, /* partial_inplace */
245 0xffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO, /* type */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
253 FALSE, /* pc_relative */
255 complain_overflow_dont,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
258 FALSE, /* partial_inplace */
260 0xffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI, /* type */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
268 FALSE, /* pc_relative */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
273 FALSE, /* partial_inplace */
275 0xffff, /* dst_mask */
276 FALSE), /* pcrel_offset */
278 /* The high order 16 bits of an address, plus 1 if the contents of
279 the low 16 bits, treated as a signed number, is negative. */
280 HOWTO (R_PPC_ADDR16_HA, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE, /* pc_relative */
286 complain_overflow_dont, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
289 FALSE, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_signed, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14", /* name */
305 FALSE, /* partial_inplace */
307 0xfffc, /* dst_mask */
308 FALSE), /* pcrel_offset */
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is expected to be taken. The lower two
312 bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_signed, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
322 FALSE, /* partial_inplace */
324 0xfffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE, /* pc_relative */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
339 FALSE, /* partial_inplace */
341 0xfffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
344 /* A relative 26 bit branch; the lower two bits must be zero. */
345 HOWTO (R_PPC_REL24, /* type */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
349 TRUE, /* pc_relative */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC_REL24", /* name */
354 FALSE, /* partial_inplace */
356 0x3fffffc, /* dst_mask */
357 TRUE), /* pcrel_offset */
359 /* A relative 16 bit branch; the lower two bits must be zero. */
360 HOWTO (R_PPC_REL14, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 TRUE, /* pc_relative */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14", /* name */
369 FALSE, /* partial_inplace */
371 0xfffc, /* dst_mask */
372 TRUE), /* pcrel_offset */
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is expected to be taken. The lower two bits must be
377 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRTAKEN", /* name */
386 FALSE, /* partial_inplace */
388 0xfffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is not expected to be taken. The lower two bits must
394 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE, /* pc_relative */
400 complain_overflow_signed, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
403 FALSE, /* partial_inplace */
405 0xfffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
410 HOWTO (R_PPC_GOT16, /* type */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
414 FALSE, /* pc_relative */
416 complain_overflow_signed, /* complain_on_overflow */
417 bfd_elf_generic_reloc, /* special_function */
418 "R_PPC_GOT16", /* name */
419 FALSE, /* partial_inplace */
421 0xffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
426 HOWTO (R_PPC_GOT16_LO, /* type */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
430 FALSE, /* pc_relative */
432 complain_overflow_dont, /* complain_on_overflow */
433 bfd_elf_generic_reloc, /* special_function */
434 "R_PPC_GOT16_LO", /* name */
435 FALSE, /* partial_inplace */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
442 HOWTO (R_PPC_GOT16_HI, /* type */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
446 FALSE, /* pc_relative */
448 complain_overflow_dont, /* complain_on_overflow */
449 bfd_elf_generic_reloc, /* special_function */
450 "R_PPC_GOT16_HI", /* name */
451 FALSE, /* partial_inplace */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
458 HOWTO (R_PPC_GOT16_HA, /* type */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
462 FALSE, /* pc_relative */
464 complain_overflow_dont, /* complain_on_overflow */
465 ppc_elf_addr16_ha_reloc, /* special_function */
466 "R_PPC_GOT16_HA", /* name */
467 FALSE, /* partial_inplace */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24, /* type */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
478 TRUE, /* pc_relative */
480 complain_overflow_signed, /* complain_on_overflow */
481 bfd_elf_generic_reloc, /* special_function */
482 "R_PPC_PLTREL24", /* name */
483 FALSE, /* partial_inplace */
485 0x3fffffc, /* dst_mask */
486 TRUE), /* pcrel_offset */
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY, /* type */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
497 FALSE, /* pc_relative */
499 complain_overflow_dont, /* complain_on_overflow */
500 bfd_elf_generic_reloc, /* special_function */
501 "R_PPC_COPY", /* name */
502 FALSE, /* partial_inplace */
505 FALSE), /* pcrel_offset */
507 /* Like R_PPC_ADDR32, but used when setting global offset table
509 HOWTO (R_PPC_GLOB_DAT, /* type */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
513 FALSE, /* pc_relative */
515 complain_overflow_dont, /* complain_on_overflow */
516 bfd_elf_generic_reloc, /* special_function */
517 "R_PPC_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
520 0xffffffff, /* dst_mask */
521 FALSE), /* pcrel_offset */
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT, /* type */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE, /* pc_relative */
530 complain_overflow_dont, /* complain_on_overflow */
531 bfd_elf_generic_reloc, /* special_function */
532 "R_PPC_JMP_SLOT", /* name */
533 FALSE, /* partial_inplace */
536 FALSE), /* pcrel_offset */
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
541 HOWTO (R_PPC_RELATIVE, /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 FALSE, /* pc_relative */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_RELATIVE", /* name */
550 FALSE, /* partial_inplace */
552 0xffffffff, /* dst_mask */
553 FALSE), /* pcrel_offset */
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 TRUE, /* pc_relative */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
567 FALSE, /* partial_inplace */
569 0x3fffffc, /* dst_mask */
570 TRUE), /* pcrel_offset */
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE, /* pc_relative */
579 complain_overflow_dont, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC_UADDR32", /* name */
582 FALSE, /* partial_inplace */
584 0xffffffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16, /* type */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
592 FALSE, /* pc_relative */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_UADDR16", /* name */
597 FALSE, /* partial_inplace */
599 0xffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32, /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 TRUE, /* pc_relative */
609 complain_overflow_dont, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_REL32", /* name */
612 FALSE, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 TRUE), /* pcrel_offset */
617 /* 32-bit relocation to the symbol's procedure linkage table.
618 FIXME: not supported. */
619 HOWTO (R_PPC_PLT32, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 FALSE, /* pc_relative */
625 complain_overflow_dont, /* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_PPC_PLT32", /* name */
628 FALSE, /* partial_inplace */
631 FALSE), /* pcrel_offset */
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 FIXME: not supported. */
635 HOWTO (R_PPC_PLTREL32, /* type */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
639 TRUE, /* pc_relative */
641 complain_overflow_dont, /* complain_on_overflow */
642 bfd_elf_generic_reloc, /* special_function */
643 "R_PPC_PLTREL32", /* name */
644 FALSE, /* partial_inplace */
647 TRUE), /* pcrel_offset */
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
651 HOWTO (R_PPC_PLT16_LO, /* type */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE, /* pc_relative */
657 complain_overflow_dont, /* complain_on_overflow */
658 bfd_elf_generic_reloc, /* special_function */
659 "R_PPC_PLT16_LO", /* name */
660 FALSE, /* partial_inplace */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
667 HOWTO (R_PPC_PLT16_HI, /* type */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_dont, /* complain_on_overflow */
674 bfd_elf_generic_reloc, /* special_function */
675 "R_PPC_PLT16_HI", /* name */
676 FALSE, /* partial_inplace */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
683 HOWTO (R_PPC_PLT16_HA, /* type */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE, /* pc_relative */
689 complain_overflow_dont, /* complain_on_overflow */
690 ppc_elf_addr16_ha_reloc, /* special_function */
691 "R_PPC_PLT16_HA", /* name */
692 FALSE, /* partial_inplace */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
699 HOWTO (R_PPC_SDAREL16, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE, /* pc_relative */
705 complain_overflow_signed, /* complain_on_overflow */
706 bfd_elf_generic_reloc, /* special_function */
707 "R_PPC_SDAREL16", /* name */
708 FALSE, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
713 /* 16-bit section relative relocation. */
714 HOWTO (R_PPC_SECTOFF, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE, /* pc_relative */
720 complain_overflow_signed, /* complain_on_overflow */
721 bfd_elf_generic_reloc, /* special_function */
722 "R_PPC_SECTOFF", /* name */
723 FALSE, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
728 /* 16-bit lower half section relative relocation. */
729 HOWTO (R_PPC_SECTOFF_LO, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 FALSE, /* pc_relative */
735 complain_overflow_dont, /* complain_on_overflow */
736 bfd_elf_generic_reloc, /* special_function */
737 "R_PPC_SECTOFF_LO", /* name */
738 FALSE, /* partial_inplace */
740 0xffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
743 /* 16-bit upper half section relative relocation. */
744 HOWTO (R_PPC_SECTOFF_HI, /* type */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE, /* pc_relative */
750 complain_overflow_dont, /* complain_on_overflow */
751 bfd_elf_generic_reloc, /* special_function */
752 "R_PPC_SECTOFF_HI", /* name */
753 FALSE, /* partial_inplace */
755 0xffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
758 /* 16-bit upper half adjusted section relative relocation. */
759 HOWTO (R_PPC_SECTOFF_HA, /* type */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
763 FALSE, /* pc_relative */
765 complain_overflow_dont, /* complain_on_overflow */
766 ppc_elf_addr16_ha_reloc, /* special_function */
767 "R_PPC_SECTOFF_HA", /* name */
768 FALSE, /* partial_inplace */
770 0xffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
773 /* Marker relocs for TLS. */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE, /* pc_relative */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC_TLS", /* name */
783 FALSE, /* partial_inplace */
786 FALSE), /* pcrel_offset */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
792 FALSE, /* pc_relative */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE, /* partial_inplace */
800 FALSE), /* pcrel_offset */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
806 FALSE, /* pc_relative */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE, /* partial_inplace */
814 FALSE), /* pcrel_offset */
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32,
820 2, /* size (0 = byte, 1 = short, 2 = long) */
822 FALSE, /* pc_relative */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPMOD32", /* name */
827 FALSE, /* partial_inplace */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32,
837 2, /* size (0 = byte, 1 = short, 2 = long) */
839 FALSE, /* pc_relative */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE, /* partial_inplace */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16,
852 1, /* size (0 = byte, 1 = short, 2 = long) */
854 FALSE, /* pc_relative */
856 complain_overflow_signed, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16", /* name */
859 FALSE, /* partial_inplace */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO,
867 1, /* size (0 = byte, 1 = short, 2 = long) */
869 FALSE, /* pc_relative */
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
874 FALSE, /* partial_inplace */
876 0xffff, /* dst_mask */
877 FALSE), /* pcrel_offset */
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI,
882 1, /* size (0 = byte, 1 = short, 2 = long) */
884 FALSE, /* pc_relative */
886 complain_overflow_dont, /* complain_on_overflow */
887 ppc_elf_unhandled_reloc, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
889 FALSE, /* partial_inplace */
891 0xffff, /* dst_mask */
892 FALSE), /* pcrel_offset */
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA,
897 1, /* size (0 = byte, 1 = short, 2 = long) */
899 FALSE, /* pc_relative */
901 complain_overflow_dont, /* complain_on_overflow */
902 ppc_elf_unhandled_reloc, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
904 FALSE, /* partial_inplace */
906 0xffff, /* dst_mask */
907 FALSE), /* pcrel_offset */
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32,
913 2, /* size (0 = byte, 1 = short, 2 = long) */
915 FALSE, /* pc_relative */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE, /* partial_inplace */
922 0xffffffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16,
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO,
943 1, /* size (0 = byte, 1 = short, 2 = long) */
945 FALSE, /* pc_relative */
947 complain_overflow_dont, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
950 FALSE, /* partial_inplace */
952 0xffff, /* dst_mask */
953 FALSE), /* pcrel_offset */
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI,
958 1, /* size (0 = byte, 1 = short, 2 = long) */
960 FALSE, /* pc_relative */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE, /* partial_inplace */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA,
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16,
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE, /* pc_relative */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
997 FALSE, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO,
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 FALSE, /* pc_relative */
1009 complain_overflow_dont, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
1012 FALSE, /* partial_inplace */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 FALSE, /* pc_relative */
1024 complain_overflow_dont, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE, /* partial_inplace */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 FALSE, /* pc_relative */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE, /* partial_inplace */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1050 HOWTO (R_PPC_GOT_TLSLD16,
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE, /* pc_relative */
1056 complain_overflow_signed, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
1059 FALSE, /* partial_inplace */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO,
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 FALSE, /* pc_relative */
1071 complain_overflow_dont, /* complain_on_overflow */
1072 ppc_elf_unhandled_reloc, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
1074 FALSE, /* partial_inplace */
1076 0xffff, /* dst_mask */
1077 FALSE), /* pcrel_offset */
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 FALSE, /* pc_relative */
1086 complain_overflow_dont, /* complain_on_overflow */
1087 ppc_elf_unhandled_reloc, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
1089 FALSE, /* partial_inplace */
1091 0xffff, /* dst_mask */
1092 FALSE), /* pcrel_offset */
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE, /* pc_relative */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE, /* partial_inplace */
1106 0xffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16,
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE, /* pc_relative */
1117 complain_overflow_signed, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
1120 FALSE, /* partial_inplace */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO,
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE, /* pc_relative */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE, /* partial_inplace */
1137 0xffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 FALSE, /* pc_relative */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE, /* partial_inplace */
1152 0xffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 FALSE, /* pc_relative */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE, /* partial_inplace */
1167 0xffff, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16,
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_signed, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE, /* partial_inplace */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO,
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE, /* pc_relative */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE, /* partial_inplace */
1198 0xffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE, /* partial_inplace */
1213 0xffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE, /* pc_relative */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE, /* partial_inplace */
1228 0xffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32, /* type */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE, /* pc_relative */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 bfd_elf_generic_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE, /* partial_inplace */
1246 0xffffffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16, /* type */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1254 FALSE, /* pc_relative */
1256 complain_overflow_signed, /* complain_on_overflow */
1257 bfd_elf_generic_reloc, /* special_function */
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE, /* partial_inplace */
1261 0xffff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont,/* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE, /* partial_inplace */
1276 0xffff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE, /* pc_relative */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE, /* partial_inplace */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1297 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_dont, /* complain_on_overflow */
1304 ppc_elf_addr16_ha_reloc, /* special_function */
1305 "R_PPC_EMB_NADDR16_HA", /* name */
1306 FALSE, /* partial_inplace */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16, /* type */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1318 FALSE, /* pc_relative */
1320 complain_overflow_signed, /* complain_on_overflow */
1321 bfd_elf_generic_reloc, /* special_function */
1322 "R_PPC_EMB_SDAI16", /* name */
1323 FALSE, /* partial_inplace */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE, /* pc_relative */
1337 complain_overflow_signed, /* complain_on_overflow */
1338 bfd_elf_generic_reloc, /* special_function */
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE, /* partial_inplace */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE, /* pc_relative */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 bfd_elf_generic_reloc, /* special_function */
1355 "R_PPC_EMB_SDA2REL", /* name */
1356 FALSE, /* partial_inplace */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21, /* type */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE, /* pc_relative */
1370 complain_overflow_signed, /* complain_on_overflow */
1371 bfd_elf_generic_reloc, /* special_function */
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE, /* partial_inplace */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA, /* type */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE, /* pc_relative */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE, /* partial_inplace */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8, /* type */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 TRUE, /* pc_relative */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE, /* partial_inplace */
1414 0xff, /* dst_mask */
1415 TRUE), /* pcrel_offset */
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15, /* type */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1422 TRUE, /* pc_relative */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE, /* partial_inplace */
1429 0xfe, /* dst_mask */
1430 TRUE), /* pcrel_offset */
1432 /* A relative 24 bit branch. */
1433 HOWTO (R_PPC_VLE_REL24, /* type */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1437 TRUE, /* pc_relative */
1439 complain_overflow_signed, /* complain_on_overflow */
1440 bfd_elf_generic_reloc, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE, /* partial_inplace */
1444 0x1fffffe, /* dst_mask */
1445 TRUE), /* pcrel_offset */
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A, /* type */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
1452 FALSE, /* pc_relative */
1454 complain_overflow_dont, /* complain_on_overflow */
1455 bfd_elf_generic_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1459 0x1f007ff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D, /* type */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
1467 FALSE, /* pc_relative */
1469 complain_overflow_dont, /* complain_on_overflow */
1470 bfd_elf_generic_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1474 0x1f07ff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A, /* type */
1479 16, /* rightshift */
1480 2, /* size (0 = byte, 1 = short, 2 = long) */
1482 FALSE, /* pc_relative */
1484 complain_overflow_dont, /* complain_on_overflow */
1485 bfd_elf_generic_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1489 0x1f007ff, /* dst_mask */
1490 FALSE), /* pcrel_offset */
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D, /* type */
1494 16, /* rightshift */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1497 FALSE, /* pc_relative */
1499 complain_overflow_dont, /* complain_on_overflow */
1500 bfd_elf_generic_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1504 0x1f07ff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A, /* type */
1509 16, /* rightshift */
1510 2, /* size (0 = byte, 1 = short, 2 = long) */
1512 FALSE, /* pc_relative */
1514 complain_overflow_dont, /* complain_on_overflow */
1515 bfd_elf_generic_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1519 0x1f007ff, /* dst_mask */
1520 FALSE), /* pcrel_offset */
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D, /* type */
1524 16, /* rightshift */
1525 2, /* size (0 = byte, 1 = short, 2 = long) */
1527 FALSE, /* pc_relative */
1529 complain_overflow_dont, /* complain_on_overflow */
1530 bfd_elf_generic_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1534 0x1f07ff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1544 FALSE, /* pc_relative */
1546 complain_overflow_signed, /* complain_on_overflow */
1547 bfd_elf_generic_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 FALSE, /* pc_relative */
1561 complain_overflow_dont, /* complain_on_overflow */
1562 bfd_elf_generic_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1566 0xffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE, /* pc_relative */
1576 complain_overflow_dont, /* complain_on_overflow */
1577 bfd_elf_generic_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1581 0x1f007ff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1589 FALSE, /* pc_relative */
1591 complain_overflow_dont, /* complain_on_overflow */
1592 bfd_elf_generic_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1596 0x1f07ff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1601 16, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1604 FALSE, /* pc_relative */
1606 complain_overflow_dont, /* complain_on_overflow */
1607 bfd_elf_generic_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1611 0x1f007ff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1616 16, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1619 FALSE, /* pc_relative */
1621 complain_overflow_dont, /* complain_on_overflow */
1622 bfd_elf_generic_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1626 0x1f07ff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1631 16, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 FALSE, /* pc_relative */
1636 complain_overflow_dont, /* complain_on_overflow */
1637 bfd_elf_generic_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1641 0x1f007ff, /* dst_mask */
1642 FALSE), /* pcrel_offset */
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1646 16, /* rightshift */
1647 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 FALSE, /* pc_relative */
1651 complain_overflow_dont, /* complain_on_overflow */
1652 bfd_elf_generic_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1656 0x1f07ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1659 HOWTO (R_PPC_IRELATIVE, /* type */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_dont, /* complain_on_overflow */
1666 bfd_elf_generic_reloc, /* special_function */
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffffffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16, /* type */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 TRUE, /* pc_relative */
1680 complain_overflow_signed, /* complain_on_overflow */
1681 bfd_elf_generic_reloc, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 TRUE), /* pcrel_offset */
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO, /* type */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 TRUE, /* pc_relative */
1695 complain_overflow_dont,/* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI, /* type */
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 TRUE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_HI", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1718 /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 TRUE, /* pc_relative */
1726 complain_overflow_dont, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE, /* partial_inplace */
1731 0xffff, /* dst_mask */
1732 TRUE), /* pcrel_offset */
1734 /* GNU extension to record C++ vtable hierarchy. */
1735 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1737 0, /* size (0 = byte, 1 = short, 2 = long) */
1739 FALSE, /* pc_relative */
1741 complain_overflow_dont, /* complain_on_overflow */
1742 NULL, /* special_function */
1743 "R_PPC_GNU_VTINHERIT", /* name */
1744 FALSE, /* partial_inplace */
1747 FALSE), /* pcrel_offset */
1749 /* GNU extension to record C++ vtable member usage. */
1750 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1752 0, /* size (0 = byte, 1 = short, 2 = long) */
1754 FALSE, /* pc_relative */
1756 complain_overflow_dont, /* complain_on_overflow */
1757 NULL, /* special_function */
1758 "R_PPC_GNU_VTENTRY", /* name */
1759 FALSE, /* partial_inplace */
1762 FALSE), /* pcrel_offset */
1764 /* Phony reloc to handle AIX style TOC entries. */
1765 HOWTO (R_PPC_TOC16, /* type */
1767 1, /* size (0 = byte, 1 = short, 2 = long) */
1769 FALSE, /* pc_relative */
1771 complain_overflow_signed, /* complain_on_overflow */
1772 bfd_elf_generic_reloc, /* special_function */
1773 "R_PPC_TOC16", /* name */
1774 FALSE, /* partial_inplace */
1776 0xffff, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1780 /* External 32-bit PPC structure for PRPSINFO. This structure is
1781 ABI-defined, thus we choose to use char arrays here in order to
1782 avoid dealing with different types in different architectures.
1784 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1785 most non-PPC architectures use `short int'.
1787 This structure will ultimately be written in the corefile's note
1788 section, as the PRPSINFO. */
1790 struct elf_external_ppc_linux_prpsinfo32
1792 char pr_state; /* Numeric process state. */
1793 char pr_sname; /* Char for pr_state. */
1794 char pr_zomb; /* Zombie. */
1795 char pr_nice; /* Nice val. */
1796 char pr_flag[4]; /* Flags. */
1803 char pr_fname[16]; /* Filename of executable. */
1804 char pr_psargs[80]; /* Initial part of arg list. */
1807 /* Helper macro to swap (properly handling endianess) things from the
1808 `elf_internal_prpsinfo' structure to the `elf_external_ppc_prpsinfo32'
1811 Note that FROM should be a pointer, and TO should be the explicit type. */
1813 #define PPC_LINUX_PRPSINFO32_SWAP_FIELDS(abfd, from, to) \
1816 H_PUT_8 (abfd, from->pr_state, &to.pr_state); \
1817 H_PUT_8 (abfd, from->pr_sname, &to.pr_sname); \
1818 H_PUT_8 (abfd, from->pr_zomb, &to.pr_zomb); \
1819 H_PUT_8 (abfd, from->pr_nice, &to.pr_nice); \
1820 H_PUT_32 (abfd, from->pr_flag, to.pr_flag); \
1821 H_PUT_32 (abfd, from->pr_uid, to.pr_uid); \
1822 H_PUT_32 (abfd, from->pr_gid, to.pr_gid); \
1823 H_PUT_32 (abfd, from->pr_pid, to.pr_pid); \
1824 H_PUT_32 (abfd, from->pr_ppid, to.pr_ppid); \
1825 H_PUT_32 (abfd, from->pr_pgrp, to.pr_pgrp); \
1826 H_PUT_32 (abfd, from->pr_sid, to.pr_sid); \
1827 strncpy (to.pr_fname, from->pr_fname, sizeof (to.pr_fname)); \
1828 strncpy (to.pr_psargs, from->pr_psargs, sizeof (to.pr_psargs)); \
1832 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1835 ppc_elf_howto_init (void)
1837 unsigned int i, type;
1840 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1843 type = ppc_elf_howto_raw[i].type;
1844 if (type >= (sizeof (ppc_elf_howto_table)
1845 / sizeof (ppc_elf_howto_table[0])))
1847 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1851 static reloc_howto_type *
1852 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1853 bfd_reloc_code_real_type code)
1855 enum elf_ppc_reloc_type r;
1857 /* Initialize howto table if not already done. */
1858 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1859 ppc_elf_howto_init ();
1866 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1867 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1868 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1869 case BFD_RELOC_PPC64_ADDR16_DS:
1870 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1871 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1872 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1873 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1874 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1875 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1876 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1877 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1878 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1879 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1880 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1881 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1882 case BFD_RELOC_PPC64_GOT16_DS:
1883 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1884 case BFD_RELOC_PPC64_GOT16_LO_DS:
1885 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1886 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1887 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1888 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1889 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1890 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1891 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1892 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1893 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1894 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1895 case BFD_RELOC_PPC64_PLT16_LO_DS:
1896 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1897 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1898 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1899 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1900 case BFD_RELOC_PPC64_SECTOFF_DS:
1901 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1902 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1903 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1904 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1905 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1906 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1907 case BFD_RELOC_PPC64_TOC16_DS:
1908 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1909 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1910 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1911 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1912 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1913 case BFD_RELOC_PPC64_TPREL16_DS:
1914 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1915 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1916 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1917 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1918 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1919 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1920 case BFD_RELOC_PPC64_DTPREL16_DS:
1921 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1922 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1923 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1924 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1925 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1926 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1927 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1928 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1929 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1930 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1931 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1932 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1933 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1934 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1935 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1936 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1937 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1938 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1939 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1940 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1941 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1942 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1943 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1944 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1945 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1946 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1947 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1948 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1949 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1950 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1951 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1952 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1953 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1954 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1955 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1956 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1957 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1958 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1959 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1960 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1961 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1962 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1963 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1964 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1965 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1966 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1967 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1968 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1969 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1970 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1971 r = R_PPC_VLE_SDAREL_LO16A;
1973 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1974 r = R_PPC_VLE_SDAREL_LO16D;
1976 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1977 r = R_PPC_VLE_SDAREL_HI16A;
1979 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1980 r = R_PPC_VLE_SDAREL_HI16D;
1982 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1983 r = R_PPC_VLE_SDAREL_HA16A;
1985 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1986 r = R_PPC_VLE_SDAREL_HA16D;
1988 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1989 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1990 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1991 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1992 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1993 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1996 return ppc_elf_howto_table[r];
1999 static reloc_howto_type *
2000 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2006 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2008 if (ppc_elf_howto_raw[i].name != NULL
2009 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2010 return &ppc_elf_howto_raw[i];
2015 /* Set the howto pointer for a PowerPC ELF reloc. */
2018 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2020 Elf_Internal_Rela *dst)
2022 unsigned int r_type;
2024 /* Initialize howto table if not already done. */
2025 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2026 ppc_elf_howto_init ();
2028 r_type = ELF32_R_TYPE (dst->r_info);
2029 if (r_type >= R_PPC_max)
2031 (*_bfd_error_handler) (_("%B: unrecognised PPC reloc number: %d"),
2033 bfd_set_error (bfd_error_bad_value);
2034 r_type = R_PPC_NONE;
2036 cache_ptr->howto = ppc_elf_howto_table[r_type];
2038 /* Just because the above assert didn't trigger doesn't mean that
2039 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2040 if (!cache_ptr->howto)
2042 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2044 bfd_set_error (bfd_error_bad_value);
2046 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2050 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2052 static bfd_reloc_status_type
2053 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2054 arelent *reloc_entry,
2056 void *data ATTRIBUTE_UNUSED,
2057 asection *input_section,
2059 char **error_message ATTRIBUTE_UNUSED)
2063 if (output_bfd != NULL)
2065 reloc_entry->address += input_section->output_offset;
2066 return bfd_reloc_ok;
2069 if (bfd_is_com_section (symbol->section))
2072 relocation = symbol->value;
2074 relocation += symbol->section->output_section->vma;
2075 relocation += symbol->section->output_offset;
2076 relocation += reloc_entry->addend;
2077 if (reloc_entry->howto->pc_relative)
2078 relocation -= reloc_entry->address;
2080 reloc_entry->addend += (relocation & 0x8000) << 1;
2082 return bfd_reloc_continue;
2085 static bfd_reloc_status_type
2086 ppc_elf_unhandled_reloc (bfd *abfd,
2087 arelent *reloc_entry,
2090 asection *input_section,
2092 char **error_message)
2094 /* If this is a relocatable link (output_bfd test tells us), just
2095 call the generic function. Any adjustment will be done at final
2097 if (output_bfd != NULL)
2098 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2099 input_section, output_bfd, error_message);
2101 if (error_message != NULL)
2103 static char buf[60];
2104 sprintf (buf, _("generic linker can't handle %s"),
2105 reloc_entry->howto->name);
2106 *error_message = buf;
2108 return bfd_reloc_dangerous;
2111 /* Sections created by the linker. */
2113 typedef struct elf_linker_section
2115 /* Pointer to the bfd section. */
2119 /* Associated bss section name. */
2120 const char *bss_name;
2121 /* Associated symbol name. */
2122 const char *sym_name;
2123 /* Associated symbol. */
2124 struct elf_link_hash_entry *sym;
2125 } elf_linker_section_t;
2127 /* Linked list of allocated pointer entries. This hangs off of the
2128 symbol lists, and provides allows us to return different pointers,
2129 based on different addend's. */
2131 typedef struct elf_linker_section_pointers
2133 /* next allocated pointer for this symbol */
2134 struct elf_linker_section_pointers *next;
2135 /* offset of pointer from beginning of section */
2139 /* which linker section this is */
2140 elf_linker_section_t *lsect;
2141 } elf_linker_section_pointers_t;
2143 struct ppc_elf_obj_tdata
2145 struct elf_obj_tdata elf;
2147 /* A mapping from local symbols to offsets into the various linker
2148 sections added. This is index by the symbol index. */
2149 elf_linker_section_pointers_t **linker_section_pointers;
2151 /* Flags used to auto-detect plt type. */
2152 unsigned int makes_plt_call : 1;
2153 unsigned int has_rel16 : 1;
2156 #define ppc_elf_tdata(bfd) \
2157 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2159 #define elf_local_ptr_offsets(bfd) \
2160 (ppc_elf_tdata (bfd)->linker_section_pointers)
2162 #define is_ppc_elf(bfd) \
2163 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2164 && elf_object_id (bfd) == PPC32_ELF_DATA)
2166 /* Override the generic function because we store some extras. */
2169 ppc_elf_mkobject (bfd *abfd)
2171 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2175 /* Fix bad default arch selected for a 32 bit input bfd when the
2176 default is 64 bit. */
2179 ppc_elf_object_p (bfd *abfd)
2181 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
2183 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2185 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2187 /* Relies on arch after 64 bit default being 32 bit default. */
2188 abfd->arch_info = abfd->arch_info->next;
2189 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2195 /* Function to set whether a module needs the -mrelocatable bit set. */
2198 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2200 BFD_ASSERT (!elf_flags_init (abfd)
2201 || elf_elfheader (abfd)->e_flags == flags);
2203 elf_elfheader (abfd)->e_flags = flags;
2204 elf_flags_init (abfd) = TRUE;
2208 /* Support for core dump NOTE sections. */
2211 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2216 switch (note->descsz)
2221 case 268: /* Linux/PPC. */
2223 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2226 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2235 /* Make a ".reg/999" section. */
2236 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2237 size, note->descpos + offset);
2241 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2243 switch (note->descsz)
2248 case 128: /* Linux/PPC elf_prpsinfo. */
2249 elf_tdata (abfd)->core->pid
2250 = bfd_get_32 (abfd, note->descdata + 16);
2251 elf_tdata (abfd)->core->program
2252 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2253 elf_tdata (abfd)->core->command
2254 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2257 /* Note that for some reason, a spurious space is tacked
2258 onto the end of the args in some (at least one anyway)
2259 implementations, so strip it off if it exists. */
2262 char *command = elf_tdata (abfd)->core->command;
2263 int n = strlen (command);
2265 if (0 < n && command[n - 1] == ' ')
2266 command[n - 1] = '\0';
2273 elfcore_write_ppc_linux_prpsinfo32 (bfd *abfd, char *buf, int *bufsiz,
2274 const struct elf_internal_linux_prpsinfo *prpsinfo)
2276 struct elf_external_ppc_linux_prpsinfo32 data;
2278 memset (&data, 0, sizeof (data));
2279 PPC_LINUX_PRPSINFO32_SWAP_FIELDS (abfd, prpsinfo, data);
2281 return elfcore_write_note (abfd, buf, bufsiz,
2282 "CORE", NT_PRPSINFO, &data, sizeof (data));
2286 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2298 va_start (ap, note_type);
2299 memset (data, 0, sizeof (data));
2300 strncpy (data + 32, va_arg (ap, const char *), 16);
2301 strncpy (data + 48, va_arg (ap, const char *), 80);
2303 return elfcore_write_note (abfd, buf, bufsiz,
2304 "CORE", note_type, data, sizeof (data));
2315 va_start (ap, note_type);
2316 memset (data, 0, 72);
2317 pid = va_arg (ap, long);
2318 bfd_put_32 (abfd, pid, data + 24);
2319 cursig = va_arg (ap, int);
2320 bfd_put_16 (abfd, cursig, data + 12);
2321 greg = va_arg (ap, const void *);
2322 memcpy (data + 72, greg, 192);
2323 memset (data + 264, 0, 4);
2325 return elfcore_write_note (abfd, buf, bufsiz,
2326 "CORE", note_type, data, sizeof (data));
2332 ppc_elf_lookup_section_flags (char *flag_name)
2335 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2341 /* Add the VLE flag if required. */
2344 ppc_elf_section_processing (bfd *abfd, Elf_Internal_Shdr *shdr)
2346 if (bfd_get_mach (abfd) == bfd_mach_ppc_vle
2347 && (shdr->sh_flags & SHF_EXECINSTR) != 0)
2348 shdr->sh_flags |= SHF_PPC_VLE;
2353 /* Return address for Ith PLT stub in section PLT, for relocation REL
2354 or (bfd_vma) -1 if it should not be included. */
2357 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2358 const asection *plt ATTRIBUTE_UNUSED,
2361 return rel->address;
2364 /* Handle a PowerPC specific section when reading an object file. This
2365 is called when bfd_section_from_shdr finds a section with an unknown
2369 ppc_elf_section_from_shdr (bfd *abfd,
2370 Elf_Internal_Shdr *hdr,
2377 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2380 newsect = hdr->bfd_section;
2381 flags = bfd_get_section_flags (abfd, newsect);
2382 if (hdr->sh_flags & SHF_EXCLUDE)
2383 flags |= SEC_EXCLUDE;
2385 if (hdr->sh_type == SHT_ORDERED)
2386 flags |= SEC_SORT_ENTRIES;
2388 bfd_set_section_flags (abfd, newsect, flags);
2392 /* Set up any other section flags and such that may be necessary. */
2395 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2396 Elf_Internal_Shdr *shdr,
2399 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2400 shdr->sh_type = SHT_ORDERED;
2405 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2406 need to bump up the number of section headers. */
2409 ppc_elf_additional_program_headers (bfd *abfd,
2410 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2415 s = bfd_get_section_by_name (abfd, ".sbss2");
2416 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2419 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2420 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2426 /* Modify the segment map for VLE executables. */
2429 ppc_elf_modify_segment_map (bfd *abfd,
2430 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2432 struct elf_segment_map *m, *n;
2435 bfd_boolean sect0_vle, sectj_vle;
2437 /* At this point in the link, output sections have already been sorted by
2438 LMA and assigned to segments. All that is left to do is to ensure
2439 there is no mixing of VLE & non-VLE sections in a text segment.
2440 If we find that case, we split the segment.
2441 We maintain the original output section order. */
2443 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2448 sect0_vle = (elf_section_flags (m->sections[0]) & SHF_PPC_VLE) != 0;
2449 for (j = 1; j < m->count; ++j)
2451 sectj_vle = (elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0;
2453 if (sectj_vle != sect0_vle)
2459 /* sections 0..j-1 stay in this (current) segment,
2460 the remainder are put in a new segment.
2461 The scan resumes with the new segment. */
2463 /* Fix the new segment. */
2464 amt = sizeof (struct elf_segment_map);
2465 amt += (m->count - j - 1) * sizeof (asection *);
2466 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2470 n->p_type = PT_LOAD;
2471 n->p_flags = PF_X | PF_R;
2473 n->p_flags |= PF_PPC_VLE;
2474 n->count = m->count - j;
2475 for (k = 0; k < n->count; ++k)
2477 n->sections[k] = m->sections[j+k];
2478 m->sections[j+k] = NULL;
2483 /* Fix the current segment */
2490 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2491 .PPC.EMB.sbss0 a normal section, and not a bss section so
2492 that the linker doesn't crater when trying to make more than
2495 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2497 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2498 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2499 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2500 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2501 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2502 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2503 { STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
2504 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2505 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2506 { NULL, 0, 0, 0, 0 }
2509 /* This is what we want for new plt/got. */
2510 static struct bfd_elf_special_section ppc_alt_plt =
2511 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2513 static const struct bfd_elf_special_section *
2514 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2516 const struct bfd_elf_special_section *ssect;
2518 /* See if this is one of the special sections. */
2519 if (sec->name == NULL)
2522 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2526 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2527 ssect = &ppc_alt_plt;
2531 return _bfd_elf_get_sec_type_attr (abfd, sec);
2534 /* Very simple linked list structure for recording apuinfo values. */
2535 typedef struct apuinfo_list
2537 struct apuinfo_list *next;
2538 unsigned long value;
2542 static apuinfo_list *head;
2543 static bfd_boolean apuinfo_set;
2546 apuinfo_list_init (void)
2549 apuinfo_set = FALSE;
2553 apuinfo_list_add (unsigned long value)
2555 apuinfo_list *entry = head;
2557 while (entry != NULL)
2559 if (entry->value == value)
2561 entry = entry->next;
2564 entry = bfd_malloc (sizeof (* entry));
2568 entry->value = value;
2574 apuinfo_list_length (void)
2576 apuinfo_list *entry;
2577 unsigned long count;
2579 for (entry = head, count = 0;
2581 entry = entry->next)
2587 static inline unsigned long
2588 apuinfo_list_element (unsigned long number)
2590 apuinfo_list * entry;
2594 entry = entry->next)
2597 return entry ? entry->value : 0;
2601 apuinfo_list_finish (void)
2603 apuinfo_list *entry;
2605 for (entry = head; entry;)
2607 apuinfo_list *next = entry->next;
2615 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
2616 #define APUINFO_LABEL "APUinfo"
2618 /* Scan the input BFDs and create a linked list of
2619 the APUinfo values that will need to be emitted. */
2622 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2626 char *buffer = NULL;
2627 bfd_size_type largest_input_size = 0;
2629 unsigned long length;
2630 const char *error_message = NULL;
2632 if (link_info == NULL)
2635 apuinfo_list_init ();
2637 /* Read in the input sections contents. */
2638 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2640 unsigned long datum;
2642 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2646 error_message = _("corrupt %s section in %B");
2647 length = asec->size;
2652 if (largest_input_size < asec->size)
2656 largest_input_size = asec->size;
2657 buffer = bfd_malloc (largest_input_size);
2662 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2663 || (bfd_bread (buffer, length, ibfd) != length))
2665 error_message = _("unable to read in %s section from %B");
2669 /* Verify the contents of the header. Note - we have to
2670 extract the values this way in order to allow for a
2671 host whose endian-ness is different from the target. */
2672 datum = bfd_get_32 (ibfd, buffer);
2673 if (datum != sizeof APUINFO_LABEL)
2676 datum = bfd_get_32 (ibfd, buffer + 8);
2680 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2683 /* Get the number of bytes used for apuinfo entries. */
2684 datum = bfd_get_32 (ibfd, buffer + 4);
2685 if (datum + 20 != length)
2688 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2689 for (i = 0; i < datum; i += 4)
2690 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2693 error_message = NULL;
2697 /* Compute the size of the output section. */
2698 unsigned num_entries = apuinfo_list_length ();
2700 /* Set the output section size, if it exists. */
2701 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2703 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2706 error_message = _("warning: unable to set size of %s section in %B");
2715 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2718 /* Prevent the output section from accumulating the input sections'
2719 contents. We have already stored this in our linked list structure. */
2722 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2723 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2725 bfd_byte *contents ATTRIBUTE_UNUSED)
2727 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2730 /* Finally we can generate the output section. */
2733 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2738 unsigned num_entries;
2739 bfd_size_type length;
2741 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2748 length = asec->size;
2752 buffer = bfd_malloc (length);
2755 (*_bfd_error_handler)
2756 (_("failed to allocate space for new APUinfo section."));
2760 /* Create the apuinfo header. */
2761 num_entries = apuinfo_list_length ();
2762 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2763 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2764 bfd_put_32 (abfd, 0x2, buffer + 8);
2765 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2768 for (i = 0; i < num_entries; i++)
2770 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2774 if (length != asec->size)
2775 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2777 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2778 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2782 apuinfo_list_finish ();
2786 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2788 bfd_byte buf[GLINK_ENTRY_SIZE];
2790 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2793 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2794 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2795 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2796 && bfd_get_32 (abfd, buf + 12) == BCTR);
2800 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2802 bfd_vma vma = *(bfd_vma *) ptr;
2803 return ((section->flags & SEC_ALLOC) != 0
2804 && section->vma <= vma
2805 && vma < section->vma + section->size);
2809 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2810 long dynsymcount, asymbol **dynsyms,
2813 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2814 asection *plt, *relplt, *dynamic, *glink;
2815 bfd_vma glink_vma = 0;
2816 bfd_vma resolv_vma = 0;
2827 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2830 if (dynsymcount <= 0)
2833 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2837 plt = bfd_get_section_by_name (abfd, ".plt");
2841 /* Call common code to handle old-style executable PLTs. */
2842 if (elf_section_flags (plt) & SHF_EXECINSTR)
2843 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2844 dynsymcount, dynsyms, ret);
2846 /* If this object was prelinked, the prelinker stored the address
2847 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2848 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2849 if (dynamic != NULL)
2851 bfd_byte *dynbuf, *extdyn, *extdynend;
2853 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2855 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2858 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2859 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2862 extdynend = extdyn + dynamic->size;
2863 for (; extdyn < extdynend; extdyn += extdynsize)
2865 Elf_Internal_Dyn dyn;
2866 (*swap_dyn_in) (abfd, extdyn, &dyn);
2868 if (dyn.d_tag == DT_NULL)
2871 if (dyn.d_tag == DT_PPC_GOT)
2873 unsigned int g_o_t = dyn.d_un.d_val;
2874 asection *got = bfd_get_section_by_name (abfd, ".got");
2876 && bfd_get_section_contents (abfd, got, buf,
2877 g_o_t - got->vma + 4, 4))
2878 glink_vma = bfd_get_32 (abfd, buf);
2885 /* Otherwise we read the first plt entry. */
2888 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2889 glink_vma = bfd_get_32 (abfd, buf);
2895 /* The .glink section usually does not survive the final
2896 link; search for the section (usually .text) where the
2897 glink stubs now reside. */
2898 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2902 /* Determine glink PLT resolver by reading the relative branch
2903 from the first glink stub. */
2904 if (bfd_get_section_contents (abfd, glink, buf,
2905 glink_vma - glink->vma, 4))
2907 unsigned int insn = bfd_get_32 (abfd, buf);
2909 /* The first glink stub may either branch to the resolver ... */
2911 if ((insn & ~0x3fffffc) == 0)
2912 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
2914 /* ... or fall through a bunch of NOPs. */
2915 else if ((insn ^ B ^ NOP) == 0)
2917 bfd_get_section_contents (abfd, glink, buf,
2918 glink_vma - glink->vma + i, 4);
2920 if (bfd_get_32 (abfd, buf) != NOP)
2922 resolv_vma = glink_vma + i;
2927 count = relplt->size / sizeof (Elf32_External_Rela);
2928 /* If the stubs are those for -shared/-pie then we might have
2929 multiple stubs for each plt entry. If that is the case then
2930 there is no way to associate stubs with their plt entries short
2931 of figuring out the GOT pointer value used in the stub. */
2932 if (!is_nonpic_glink_stub (abfd, glink,
2933 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2936 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2937 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2940 size = count * sizeof (asymbol);
2941 p = relplt->relocation;
2942 for (i = 0; i < count; i++, p++)
2944 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2946 size += sizeof ("+0x") - 1 + 8;
2949 size += sizeof (asymbol) + sizeof ("__glink");
2952 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2954 s = *ret = bfd_malloc (size);
2958 stub_vma = glink_vma;
2959 names = (char *) (s + count + 1 + (resolv_vma != 0));
2960 p = relplt->relocation + count - 1;
2961 for (i = 0; i < count; i++)
2965 *s = **p->sym_ptr_ptr;
2966 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
2967 we are defining a symbol, ensure one of them is set. */
2968 if ((s->flags & BSF_LOCAL) == 0)
2969 s->flags |= BSF_GLOBAL;
2970 s->flags |= BSF_SYNTHETIC;
2973 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
2975 s->value = stub_vma - glink->vma;
2978 len = strlen ((*p->sym_ptr_ptr)->name);
2979 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2983 memcpy (names, "+0x", sizeof ("+0x") - 1);
2984 names += sizeof ("+0x") - 1;
2985 bfd_sprintf_vma (abfd, names, p->addend);
2986 names += strlen (names);
2988 memcpy (names, "@plt", sizeof ("@plt"));
2989 names += sizeof ("@plt");
2994 /* Add a symbol at the start of the glink branch table. */
2995 memset (s, 0, sizeof *s);
2997 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2999 s->value = glink_vma - glink->vma;
3001 memcpy (names, "__glink", sizeof ("__glink"));
3002 names += sizeof ("__glink");
3008 /* Add a symbol for the glink PLT resolver. */
3009 memset (s, 0, sizeof *s);
3011 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3013 s->value = resolv_vma - glink->vma;
3015 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3016 names += sizeof ("__glink_PLTresolve");
3024 /* The following functions are specific to the ELF linker, while
3025 functions above are used generally. They appear in this file more
3026 or less in the order in which they are called. eg.
3027 ppc_elf_check_relocs is called early in the link process,
3028 ppc_elf_finish_dynamic_sections is one of the last functions
3031 /* Track PLT entries needed for a given symbol. We might need more
3032 than one glink entry per symbol when generating a pic binary. */
3035 struct plt_entry *next;
3037 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3038 This field stores the offset into .got2 used to initialise the
3039 GOT pointer reg. It will always be at least 32768. (Current
3040 gcc always uses an offset of 32768, but ld -r will pack .got2
3041 sections together resulting in larger offsets). */
3044 /* The .got2 section. */
3047 /* PLT refcount or offset. */
3050 bfd_signed_vma refcount;
3054 /* .glink stub offset. */
3055 bfd_vma glink_offset;
3058 /* Of those relocs that might be copied as dynamic relocs, this function
3059 selects those that must be copied when linking a shared library,
3060 even when the symbol is local. */
3063 must_be_dyn_reloc (struct bfd_link_info *info,
3064 enum elf_ppc_reloc_type r_type)
3073 case R_PPC_REL14_BRTAKEN:
3074 case R_PPC_REL14_BRNTAKEN:
3080 case R_PPC_TPREL16_LO:
3081 case R_PPC_TPREL16_HI:
3082 case R_PPC_TPREL16_HA:
3083 return !info->executable;
3087 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3088 copying dynamic variables from a shared lib into an app's dynbss
3089 section, and instead use a dynamic relocation to point into the
3091 #define ELIMINATE_COPY_RELOCS 1
3093 /* Used to track dynamic relocations for local symbols. */
3094 struct ppc_dyn_relocs
3096 struct ppc_dyn_relocs *next;
3098 /* The input section of the reloc. */
3101 /* Total number of relocs copied for the input section. */
3102 unsigned int count : 31;
3104 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3105 unsigned int ifunc : 1;
3108 /* PPC ELF linker hash entry. */
3110 struct ppc_elf_link_hash_entry
3112 struct elf_link_hash_entry elf;
3114 /* If this symbol is used in the linker created sections, the processor
3115 specific backend uses this field to map the field into the offset
3116 from the beginning of the section. */
3117 elf_linker_section_pointers_t *linker_section_pointer;
3119 /* Track dynamic relocs copied for this symbol. */
3120 struct elf_dyn_relocs *dyn_relocs;
3122 /* Contexts in which symbol is used in the GOT (or TOC).
3123 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3124 corresponding relocs are encountered during check_relocs.
3125 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3126 indicate the corresponding GOT entry type is not needed. */
3127 #define TLS_GD 1 /* GD reloc. */
3128 #define TLS_LD 2 /* LD reloc. */
3129 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3130 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3131 #define TLS_TLS 16 /* Any TLS reloc. */
3132 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3133 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3136 /* Nonzero if we have seen a small data relocation referring to this
3138 unsigned char has_sda_refs;
3141 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3143 /* PPC ELF linker hash table. */
3145 struct ppc_elf_link_hash_table
3147 struct elf_link_hash_table elf;
3149 /* Various options passed from the linker. */
3150 struct ppc_elf_params *params;
3152 /* Short-cuts to get to dynamic linker sections. */
3164 elf_linker_section_t sdata[2];
3166 asection *glink_eh_frame;
3168 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3171 /* The .got.plt section (VxWorks only)*/
3174 /* Shortcut to __tls_get_addr. */
3175 struct elf_link_hash_entry *tls_get_addr;
3177 /* The bfd that forced an old-style PLT. */
3180 /* TLS local dynamic got entry handling. */
3182 bfd_signed_vma refcount;
3186 /* Offset of branch table to PltResolve function in glink. */
3187 bfd_vma glink_pltresolve;
3189 /* Size of reserved GOT entries. */
3190 unsigned int got_header_size;
3191 /* Non-zero if allocating the header left a gap. */
3192 unsigned int got_gap;
3194 /* The type of PLT we have chosen to use. */
3195 enum ppc_elf_plt_type plt_type;
3197 /* True if the target system is VxWorks. */
3198 unsigned int is_vxworks:1;
3200 /* The size of PLT entries. */
3202 /* The distance between adjacent PLT slots. */
3204 /* The size of the first PLT entry. */
3205 int plt_initial_entry_size;
3207 /* Small local sym cache. */
3208 struct sym_cache sym_cache;
3211 /* Rename some of the generic section flags to better document how they
3212 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3214 /* Nonzero if this section has TLS related relocations. */
3215 #define has_tls_reloc sec_flg0
3217 /* Nonzero if this section has a call to __tls_get_addr. */
3218 #define has_tls_get_addr_call sec_flg1
3220 /* Get the PPC ELF linker hash table from a link_info structure. */
3222 #define ppc_elf_hash_table(p) \
3223 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3224 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3226 /* Create an entry in a PPC ELF linker hash table. */
3228 static struct bfd_hash_entry *
3229 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3230 struct bfd_hash_table *table,
3233 /* Allocate the structure if it has not already been allocated by a
3237 entry = bfd_hash_allocate (table,
3238 sizeof (struct ppc_elf_link_hash_entry));
3243 /* Call the allocation method of the superclass. */
3244 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3247 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3248 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3249 ppc_elf_hash_entry (entry)->tls_mask = 0;
3250 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3256 /* Create a PPC ELF linker hash table. */
3258 static struct bfd_link_hash_table *
3259 ppc_elf_link_hash_table_create (bfd *abfd)
3261 struct ppc_elf_link_hash_table *ret;
3262 static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 12 };
3264 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3268 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3269 ppc_elf_link_hash_newfunc,
3270 sizeof (struct ppc_elf_link_hash_entry),
3277 ret->elf.init_plt_refcount.refcount = 0;
3278 ret->elf.init_plt_refcount.glist = NULL;
3279 ret->elf.init_plt_offset.offset = 0;
3280 ret->elf.init_plt_offset.glist = NULL;
3282 ret->params = &default_params;
3284 ret->sdata[0].name = ".sdata";
3285 ret->sdata[0].sym_name = "_SDA_BASE_";
3286 ret->sdata[0].bss_name = ".sbss";
3288 ret->sdata[1].name = ".sdata2";
3289 ret->sdata[1].sym_name = "_SDA2_BASE_";
3290 ret->sdata[1].bss_name = ".sbss2";
3292 ret->plt_entry_size = 12;
3293 ret->plt_slot_size = 8;
3294 ret->plt_initial_entry_size = 72;
3296 return &ret->elf.root;
3299 /* Hook linker params into hash table. */
3302 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3304 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3307 htab->params = params;
3310 /* Create .got and the related sections. */
3313 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3315 struct ppc_elf_link_hash_table *htab;
3319 if (!_bfd_elf_create_got_section (abfd, info))
3322 htab = ppc_elf_hash_table (info);
3323 htab->got = s = bfd_get_linker_section (abfd, ".got");
3327 if (htab->is_vxworks)
3329 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3335 /* The powerpc .got has a blrl instruction in it. Mark it
3337 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3338 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3339 if (!bfd_set_section_flags (abfd, s, flags))
3343 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3350 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3351 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3352 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3355 ppc_elf_create_linker_section (bfd *abfd,
3356 struct bfd_link_info *info,
3358 elf_linker_section_t *lsect)
3362 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3363 | SEC_LINKER_CREATED);
3365 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3370 /* Define the sym on the first section of this name. */
3371 s = bfd_get_section_by_name (abfd, lsect->name);
3373 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3374 if (lsect->sym == NULL)
3376 lsect->sym->root.u.def.value = 0x8000;
3381 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3383 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3387 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3388 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3389 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3392 || !bfd_set_section_alignment (abfd, s,
3393 htab->params->ppc476_workaround ? 6 : 4))
3396 if (!info->no_ld_generated_unwind_info)
3398 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3399 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3400 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3401 htab->glink_eh_frame = s;
3403 || !bfd_set_section_alignment (abfd, s, 2))
3407 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3408 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3411 || !bfd_set_section_alignment (abfd, s, 4))
3414 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3415 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3416 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3419 || ! bfd_set_section_alignment (abfd, s, 2))
3422 if (!ppc_elf_create_linker_section (abfd, info, 0,
3426 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3433 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3434 to output sections (just like _bfd_elf_create_dynamic_sections has
3435 to create .dynbss and .rela.bss). */
3438 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3440 struct ppc_elf_link_hash_table *htab;
3444 htab = ppc_elf_hash_table (info);
3446 if (htab->got == NULL
3447 && !ppc_elf_create_got (abfd, info))
3450 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3453 if (htab->glink == NULL
3454 && !ppc_elf_create_glink (abfd, info))
3457 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3458 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3459 SEC_ALLOC | SEC_LINKER_CREATED);
3466 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3467 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3468 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3469 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3472 || ! bfd_set_section_alignment (abfd, s, 2))
3476 if (htab->is_vxworks
3477 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3480 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3481 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3485 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3486 if (htab->plt_type == PLT_VXWORKS)
3487 /* The VxWorks PLT is a loaded section with contents. */
3488 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3489 return bfd_set_section_flags (abfd, s, flags);
3492 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3495 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3496 struct elf_link_hash_entry *dir,
3497 struct elf_link_hash_entry *ind)
3499 struct ppc_elf_link_hash_entry *edir, *eind;
3501 edir = (struct ppc_elf_link_hash_entry *) dir;
3502 eind = (struct ppc_elf_link_hash_entry *) ind;
3504 edir->tls_mask |= eind->tls_mask;
3505 edir->has_sda_refs |= eind->has_sda_refs;
3507 /* If called to transfer flags for a weakdef during processing
3508 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3509 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3510 if (!(ELIMINATE_COPY_RELOCS
3511 && eind->elf.root.type != bfd_link_hash_indirect
3512 && edir->elf.dynamic_adjusted))
3513 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3515 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3516 edir->elf.ref_regular |= eind->elf.ref_regular;
3517 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3518 edir->elf.needs_plt |= eind->elf.needs_plt;
3519 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3521 if (eind->dyn_relocs != NULL)
3523 if (edir->dyn_relocs != NULL)
3525 struct elf_dyn_relocs **pp;
3526 struct elf_dyn_relocs *p;
3528 /* Add reloc counts against the indirect sym to the direct sym
3529 list. Merge any entries against the same section. */
3530 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3532 struct elf_dyn_relocs *q;
3534 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3535 if (q->sec == p->sec)
3537 q->pc_count += p->pc_count;
3538 q->count += p->count;
3545 *pp = edir->dyn_relocs;
3548 edir->dyn_relocs = eind->dyn_relocs;
3549 eind->dyn_relocs = NULL;
3552 /* If we were called to copy over info for a weak sym, that's all.
3553 You might think dyn_relocs need not be copied over; After all,
3554 both syms will be dynamic or both non-dynamic so we're just
3555 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3556 code in ppc_elf_adjust_dynamic_symbol needs to check for
3557 dyn_relocs in read-only sections, and it does so on what is the
3559 if (eind->elf.root.type != bfd_link_hash_indirect)
3562 /* Copy over the GOT refcount entries that we may have already seen to
3563 the symbol which just became indirect. */
3564 edir->elf.got.refcount += eind->elf.got.refcount;
3565 eind->elf.got.refcount = 0;
3567 /* And plt entries. */
3568 if (eind->elf.plt.plist != NULL)
3570 if (edir->elf.plt.plist != NULL)
3572 struct plt_entry **entp;
3573 struct plt_entry *ent;
3575 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3577 struct plt_entry *dent;
3579 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3580 if (dent->sec == ent->sec && dent->addend == ent->addend)
3582 dent->plt.refcount += ent->plt.refcount;
3589 *entp = edir->elf.plt.plist;
3592 edir->elf.plt.plist = eind->elf.plt.plist;
3593 eind->elf.plt.plist = NULL;
3596 if (eind->elf.dynindx != -1)
3598 if (edir->elf.dynindx != -1)
3599 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3600 edir->elf.dynstr_index);
3601 edir->elf.dynindx = eind->elf.dynindx;
3602 edir->elf.dynstr_index = eind->elf.dynstr_index;
3603 eind->elf.dynindx = -1;
3604 eind->elf.dynstr_index = 0;
3608 /* Hook called by the linker routine which adds symbols from an object
3609 file. We use it to put .comm items in .sbss, and not .bss. */
3612 ppc_elf_add_symbol_hook (bfd *abfd,
3613 struct bfd_link_info *info,
3614 Elf_Internal_Sym *sym,
3615 const char **namep ATTRIBUTE_UNUSED,
3616 flagword *flagsp ATTRIBUTE_UNUSED,
3620 if (sym->st_shndx == SHN_COMMON
3621 && !info->relocatable
3622 && is_ppc_elf (info->output_bfd)
3623 && sym->st_size <= elf_gp_size (abfd))
3625 /* Common symbols less than or equal to -G nn bytes are automatically
3627 struct ppc_elf_link_hash_table *htab;
3629 htab = ppc_elf_hash_table (info);
3630 if (htab->sbss == NULL)
3632 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3634 if (!htab->elf.dynobj)
3635 htab->elf.dynobj = abfd;
3637 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3640 if (htab->sbss == NULL)
3645 *valp = sym->st_size;
3648 if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3649 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
3650 && (abfd->flags & DYNAMIC) == 0
3651 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3652 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3657 /* Find a linker generated pointer with a given addend and type. */
3659 static elf_linker_section_pointers_t *
3660 elf_find_pointer_linker_section
3661 (elf_linker_section_pointers_t *linker_pointers,
3663 elf_linker_section_t *lsect)
3665 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3666 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3667 return linker_pointers;
3672 /* Allocate a pointer to live in a linker created section. */
3675 elf_allocate_pointer_linker_section (bfd *abfd,
3676 elf_linker_section_t *lsect,
3677 struct elf_link_hash_entry *h,
3678 const Elf_Internal_Rela *rel)
3680 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3681 elf_linker_section_pointers_t *linker_section_ptr;
3682 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3685 BFD_ASSERT (lsect != NULL);
3687 /* Is this a global symbol? */
3690 struct ppc_elf_link_hash_entry *eh;
3692 /* Has this symbol already been allocated? If so, our work is done. */
3693 eh = (struct ppc_elf_link_hash_entry *) h;
3694 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3699 ptr_linker_section_ptr = &eh->linker_section_pointer;
3703 BFD_ASSERT (is_ppc_elf (abfd));
3705 /* Allocation of a pointer to a local symbol. */
3706 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3708 /* Allocate a table to hold the local symbols if first time. */
3711 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3714 amt *= sizeof (elf_linker_section_pointers_t *);
3715 ptr = bfd_zalloc (abfd, amt);
3720 elf_local_ptr_offsets (abfd) = ptr;
3723 /* Has this symbol already been allocated? If so, our work is done. */
3724 if (elf_find_pointer_linker_section (ptr[r_symndx],
3729 ptr_linker_section_ptr = &ptr[r_symndx];
3732 /* Allocate space for a pointer in the linker section, and allocate
3733 a new pointer record from internal memory. */
3734 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3735 amt = sizeof (elf_linker_section_pointers_t);
3736 linker_section_ptr = bfd_alloc (abfd, amt);
3738 if (!linker_section_ptr)
3741 linker_section_ptr->next = *ptr_linker_section_ptr;
3742 linker_section_ptr->addend = rel->r_addend;
3743 linker_section_ptr->lsect = lsect;
3744 *ptr_linker_section_ptr = linker_section_ptr;
3746 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3748 linker_section_ptr->offset = lsect->section->size;
3749 lsect->section->size += 4;
3753 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3754 lsect->name, (long) linker_section_ptr->offset,
3755 (long) lsect->section->size);
3761 static struct plt_entry **
3762 update_local_sym_info (bfd *abfd,
3763 Elf_Internal_Shdr *symtab_hdr,
3764 unsigned long r_symndx,
3767 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3768 struct plt_entry **local_plt;
3769 char *local_got_tls_masks;
3771 if (local_got_refcounts == NULL)
3773 bfd_size_type size = symtab_hdr->sh_info;
3775 size *= (sizeof (*local_got_refcounts)
3776 + sizeof (*local_plt)
3777 + sizeof (*local_got_tls_masks));
3778 local_got_refcounts = bfd_zalloc (abfd, size);
3779 if (local_got_refcounts == NULL)
3781 elf_local_got_refcounts (abfd) = local_got_refcounts;
3784 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3785 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3786 local_got_tls_masks[r_symndx] |= tls_type;
3787 if (tls_type != PLT_IFUNC)
3788 local_got_refcounts[r_symndx] += 1;
3789 return local_plt + r_symndx;
3793 update_plt_info (bfd *abfd, struct plt_entry **plist,
3794 asection *sec, bfd_vma addend)
3796 struct plt_entry *ent;
3800 for (ent = *plist; ent != NULL; ent = ent->next)
3801 if (ent->sec == sec && ent->addend == addend)
3805 bfd_size_type amt = sizeof (*ent);
3806 ent = bfd_alloc (abfd, amt);
3811 ent->addend = addend;
3812 ent->plt.refcount = 0;
3815 ent->plt.refcount += 1;
3819 static struct plt_entry *
3820 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3822 struct plt_entry *ent;
3826 for (ent = *plist; ent != NULL; ent = ent->next)
3827 if (ent->sec == sec && ent->addend == addend)
3833 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3835 return (r_type == R_PPC_PLTREL24
3836 || r_type == R_PPC_LOCAL24PC
3837 || r_type == R_PPC_REL24
3838 || r_type == R_PPC_REL14
3839 || r_type == R_PPC_REL14_BRTAKEN
3840 || r_type == R_PPC_REL14_BRNTAKEN
3841 || r_type == R_PPC_ADDR24
3842 || r_type == R_PPC_ADDR14
3843 || r_type == R_PPC_ADDR14_BRTAKEN
3844 || r_type == R_PPC_ADDR14_BRNTAKEN);
3848 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3850 (*_bfd_error_handler)
3851 (_("%B: relocation %s cannot be used when making a shared object"),
3853 ppc_elf_howto_table[r_type]->name);
3854 bfd_set_error (bfd_error_bad_value);
3857 /* Look through the relocs for a section during the first phase, and
3858 allocate space in the global offset table or procedure linkage
3862 ppc_elf_check_relocs (bfd *abfd,
3863 struct bfd_link_info *info,
3865 const Elf_Internal_Rela *relocs)
3867 struct ppc_elf_link_hash_table *htab;
3868 Elf_Internal_Shdr *symtab_hdr;
3869 struct elf_link_hash_entry **sym_hashes;
3870 const Elf_Internal_Rela *rel;
3871 const Elf_Internal_Rela *rel_end;
3872 asection *got2, *sreloc;
3873 struct elf_link_hash_entry *tga;
3875 if (info->relocatable)
3878 /* Don't do anything special with non-loaded, non-alloced sections.
3879 In particular, any relocs in such sections should not affect GOT
3880 and PLT reference counting (ie. we don't allow them to create GOT
3881 or PLT entries), there's no possibility or desire to optimize TLS
3882 relocs, and there's not much point in propagating relocs to shared
3883 libs that the dynamic linker won't relocate. */
3884 if ((sec->flags & SEC_ALLOC) == 0)
3888 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3892 BFD_ASSERT (is_ppc_elf (abfd));
3894 /* Initialize howto table if not already done. */
3895 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3896 ppc_elf_howto_init ();
3898 htab = ppc_elf_hash_table (info);
3899 if (htab->glink == NULL)
3901 if (htab->elf.dynobj == NULL)
3902 htab->elf.dynobj = abfd;
3903 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3906 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3907 FALSE, FALSE, TRUE);
3908 symtab_hdr = &elf_symtab_hdr (abfd);
3909 sym_hashes = elf_sym_hashes (abfd);
3910 got2 = bfd_get_section_by_name (abfd, ".got2");
3913 rel_end = relocs + sec->reloc_count;
3914 for (rel = relocs; rel < rel_end; rel++)
3916 unsigned long r_symndx;
3917 enum elf_ppc_reloc_type r_type;
3918 struct elf_link_hash_entry *h;
3921 r_symndx = ELF32_R_SYM (rel->r_info);
3922 if (r_symndx < symtab_hdr->sh_info)
3926 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3927 while (h->root.type == bfd_link_hash_indirect
3928 || h->root.type == bfd_link_hash_warning)
3929 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3931 /* PR15323, ref flags aren't set for references in the same
3933 h->root.non_ir_ref = 1;
3936 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3937 This shows up in particular in an R_PPC_ADDR32 in the eabi
3940 && htab->got == NULL
3941 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3943 if (htab->elf.dynobj == NULL)
3944 htab->elf.dynobj = abfd;
3945 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3947 BFD_ASSERT (h == htab->elf.hgot);
3951 r_type = ELF32_R_TYPE (rel->r_info);
3952 if (h == NULL && !htab->is_vxworks)
3954 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3959 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3961 struct plt_entry **ifunc;
3963 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3964 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3969 /* STT_GNU_IFUNC symbols must have a PLT entry;
3970 In a non-pie executable even when there are
3973 || is_branch_reloc (r_type))
3976 if (r_type == R_PPC_PLTREL24)
3978 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3980 addend = rel->r_addend;
3982 if (!update_plt_info (abfd, ifunc, got2, addend))
3988 if (!htab->is_vxworks
3989 && is_branch_reloc (r_type)
3994 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3995 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3996 /* We have a new-style __tls_get_addr call with a marker
4000 /* Mark this section as having an old-style call. */
4001 sec->has_tls_get_addr_call = 1;
4008 /* These special tls relocs tie a call to __tls_get_addr with
4009 its parameter symbol. */
4012 case R_PPC_GOT_TLSLD16:
4013 case R_PPC_GOT_TLSLD16_LO:
4014 case R_PPC_GOT_TLSLD16_HI:
4015 case R_PPC_GOT_TLSLD16_HA:
4016 tls_type = TLS_TLS | TLS_LD;
4019 case R_PPC_GOT_TLSGD16:
4020 case R_PPC_GOT_TLSGD16_LO:
4021 case R_PPC_GOT_TLSGD16_HI:
4022 case R_PPC_GOT_TLSGD16_HA:
4023 tls_type = TLS_TLS | TLS_GD;
4026 case R_PPC_GOT_TPREL16:
4027 case R_PPC_GOT_TPREL16_LO:
4028 case R_PPC_GOT_TPREL16_HI:
4029 case R_PPC_GOT_TPREL16_HA:
4031 info->flags |= DF_STATIC_TLS;
4032 tls_type = TLS_TLS | TLS_TPREL;
4035 case R_PPC_GOT_DTPREL16:
4036 case R_PPC_GOT_DTPREL16_LO:
4037 case R_PPC_GOT_DTPREL16_HI:
4038 case R_PPC_GOT_DTPREL16_HA:
4039 tls_type = TLS_TLS | TLS_DTPREL;
4041 sec->has_tls_reloc = 1;
4044 /* GOT16 relocations */
4046 case R_PPC_GOT16_LO:
4047 case R_PPC_GOT16_HI:
4048 case R_PPC_GOT16_HA:
4049 /* This symbol requires a global offset table entry. */
4050 if (htab->got == NULL)
4052 if (htab->elf.dynobj == NULL)
4053 htab->elf.dynobj = abfd;
4054 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4059 h->got.refcount += 1;
4060 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4063 /* This is a global offset table entry for a local symbol. */
4064 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4067 /* We may also need a plt entry if the symbol turns out to be
4069 if (h != NULL && !info->shared)
4071 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4076 /* Indirect .sdata relocation. */
4077 case R_PPC_EMB_SDAI16:
4080 bad_shared_reloc (abfd, r_type);
4083 htab->sdata[0].sym->ref_regular = 1;
4084 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4089 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4090 h->non_got_ref = TRUE;
4094 /* Indirect .sdata2 relocation. */
4095 case R_PPC_EMB_SDA2I16:
4098 bad_shared_reloc (abfd, r_type);
4101 htab->sdata[1].sym->ref_regular = 1;
4102 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4107 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4108 h->non_got_ref = TRUE;
4112 case R_PPC_SDAREL16:
4113 htab->sdata[0].sym->ref_regular = 1;
4116 case R_PPC_VLE_SDAREL_LO16A:
4117 case R_PPC_VLE_SDAREL_LO16D:
4118 case R_PPC_VLE_SDAREL_HI16A:
4119 case R_PPC_VLE_SDAREL_HI16D:
4120 case R_PPC_VLE_SDAREL_HA16A:
4121 case R_PPC_VLE_SDAREL_HA16D:
4124 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4125 h->non_got_ref = TRUE;
4129 case R_PPC_VLE_REL8:
4130 case R_PPC_VLE_REL15:
4131 case R_PPC_VLE_REL24:
4132 case R_PPC_VLE_LO16A:
4133 case R_PPC_VLE_LO16D:
4134 case R_PPC_VLE_HI16A:
4135 case R_PPC_VLE_HI16D:
4136 case R_PPC_VLE_HA16A:
4137 case R_PPC_VLE_HA16D:
4140 case R_PPC_EMB_SDA2REL:
4143 bad_shared_reloc (abfd, r_type);
4146 htab->sdata[1].sym->ref_regular = 1;
4149 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4150 h->non_got_ref = TRUE;
4154 case R_PPC_VLE_SDA21_LO:
4155 case R_PPC_VLE_SDA21:
4156 case R_PPC_EMB_SDA21:
4157 case R_PPC_EMB_RELSDA:
4160 bad_shared_reloc (abfd, r_type);
4165 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4166 h->non_got_ref = TRUE;
4170 case R_PPC_EMB_NADDR32:
4171 case R_PPC_EMB_NADDR16:
4172 case R_PPC_EMB_NADDR16_LO:
4173 case R_PPC_EMB_NADDR16_HI:
4174 case R_PPC_EMB_NADDR16_HA:
4177 bad_shared_reloc (abfd, r_type);
4181 h->non_got_ref = TRUE;
4184 case R_PPC_PLTREL24:
4189 case R_PPC_PLTREL32:
4190 case R_PPC_PLT16_LO:
4191 case R_PPC_PLT16_HI:
4192 case R_PPC_PLT16_HA:
4194 fprintf (stderr, "Reloc requires a PLT entry\n");
4196 /* This symbol requires a procedure linkage table entry. We
4197 actually build the entry in finish_dynamic_symbol,
4198 because this might be a case of linking PIC code without
4199 linking in any dynamic objects, in which case we don't
4200 need to generate a procedure linkage table after all. */
4204 /* It does not make sense to have a procedure linkage
4205 table entry for a local symbol. */
4206 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4207 abfd, sec, rel->r_offset,
4208 ppc_elf_howto_table[r_type]->name);
4209 bfd_set_error (bfd_error_bad_value);
4216 if (r_type == R_PPC_PLTREL24)
4218 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4220 addend = rel->r_addend;
4223 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4228 /* The following relocations don't need to propagate the
4229 relocation if linking a shared object since they are
4230 section relative. */
4232 case R_PPC_SECTOFF_LO:
4233 case R_PPC_SECTOFF_HI:
4234 case R_PPC_SECTOFF_HA:
4235 case R_PPC_DTPREL16:
4236 case R_PPC_DTPREL16_LO:
4237 case R_PPC_DTPREL16_HI:
4238 case R_PPC_DTPREL16_HA:
4243 case R_PPC_REL16_LO:
4244 case R_PPC_REL16_HI:
4245 case R_PPC_REL16_HA:
4246 ppc_elf_tdata (abfd)->has_rel16 = 1;
4249 /* These are just markers. */
4251 case R_PPC_EMB_MRKREF:
4255 case R_PPC_RELAX_PLT:
4256 case R_PPC_RELAX_PLTREL24:
4259 /* These should only appear in dynamic objects. */
4261 case R_PPC_GLOB_DAT:
4262 case R_PPC_JMP_SLOT:
4263 case R_PPC_RELATIVE:
4264 case R_PPC_IRELATIVE:
4267 /* These aren't handled yet. We'll report an error later. */
4269 case R_PPC_EMB_RELSEC16:
4270 case R_PPC_EMB_RELST_LO:
4271 case R_PPC_EMB_RELST_HI:
4272 case R_PPC_EMB_RELST_HA:
4273 case R_PPC_EMB_BIT_FLD:
4276 /* This refers only to functions defined in the shared library. */
4277 case R_PPC_LOCAL24PC:
4278 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4280 htab->plt_type = PLT_OLD;
4281 htab->old_bfd = abfd;
4283 if (h != NULL && h->type == STT_GNU_IFUNC)
4287 info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"),
4288 abfd, sec, rel->r_offset,
4289 h->root.root.string);
4290 bfd_set_error (bfd_error_bad_value);
4294 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4299 /* This relocation describes the C++ object vtable hierarchy.
4300 Reconstruct it for later use during GC. */
4301 case R_PPC_GNU_VTINHERIT:
4302 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4306 /* This relocation describes which C++ vtable entries are actually
4307 used. Record for later use during GC. */
4308 case R_PPC_GNU_VTENTRY:
4309 BFD_ASSERT (h != NULL);
4311 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4315 /* We shouldn't really be seeing these. */
4318 case R_PPC_TPREL16_LO:
4319 case R_PPC_TPREL16_HI:
4320 case R_PPC_TPREL16_HA:
4322 info->flags |= DF_STATIC_TLS;
4326 case R_PPC_DTPMOD32:
4327 case R_PPC_DTPREL32:
4333 && (sec->flags & SEC_CODE) != 0
4335 && htab->plt_type == PLT_UNSET)
4337 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4338 the start of a function, which assembles to a REL32
4339 reference to .got2. If we detect one of these, then
4340 force the old PLT layout because the linker cannot
4341 reliably deduce the GOT pointer value needed for
4344 Elf_Internal_Sym *isym;
4346 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4351 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4354 htab->plt_type = PLT_OLD;
4355 htab->old_bfd = abfd;
4358 if (h == NULL || h == htab->elf.hgot)
4364 case R_PPC_ADDR16_LO:
4365 case R_PPC_ADDR16_HI:
4366 case R_PPC_ADDR16_HA:
4369 if (h != NULL && !info->shared)
4371 /* We may need a plt entry if the symbol turns out to be
4372 a function defined in a dynamic object. */
4373 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4376 /* We may need a copy reloc too. */
4378 h->pointer_equality_needed = 1;
4384 case R_PPC_REL14_BRTAKEN:
4385 case R_PPC_REL14_BRNTAKEN:
4388 if (h == htab->elf.hgot)
4390 if (htab->plt_type == PLT_UNSET)
4392 htab->plt_type = PLT_OLD;
4393 htab->old_bfd = abfd;
4401 case R_PPC_ADDR14_BRTAKEN:
4402 case R_PPC_ADDR14_BRNTAKEN:
4403 if (h != NULL && !info->shared)
4405 /* We may need a plt entry if the symbol turns out to be
4406 a function defined in a dynamic object. */
4408 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4414 /* If we are creating a shared library, and this is a reloc
4415 against a global symbol, or a non PC relative reloc
4416 against a local symbol, then we need to copy the reloc
4417 into the shared library. However, if we are linking with
4418 -Bsymbolic, we do not need to copy a reloc against a
4419 global symbol which is defined in an object we are
4420 including in the link (i.e., DEF_REGULAR is set). At
4421 this point we have not seen all the input files, so it is
4422 possible that DEF_REGULAR is not set now but will be set
4423 later (it is never cleared). In case of a weak definition,
4424 DEF_REGULAR may be cleared later by a strong definition in
4425 a shared library. We account for that possibility below by
4426 storing information in the dyn_relocs field of the hash
4427 table entry. A similar situation occurs when creating
4428 shared libraries and symbol visibility changes render the
4431 If on the other hand, we are creating an executable, we
4432 may need to keep relocations for symbols satisfied by a
4433 dynamic library if we manage to avoid copy relocs for the
4436 && (must_be_dyn_reloc (info, r_type)
4438 && (!SYMBOLIC_BIND (info, h)
4439 || h->root.type == bfd_link_hash_defweak
4440 || !h->def_regular))))
4441 || (ELIMINATE_COPY_RELOCS
4444 && (h->root.type == bfd_link_hash_defweak
4445 || !h->def_regular)))
4449 "ppc_elf_check_relocs needs to "
4450 "create relocation for %s\n",
4451 (h && h->root.root.string
4452 ? h->root.root.string : "<unknown>"));
4456 if (htab->elf.dynobj == NULL)
4457 htab->elf.dynobj = abfd;
4459 sreloc = _bfd_elf_make_dynamic_reloc_section
4460 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4466 /* If this is a global symbol, we count the number of
4467 relocations we need for this symbol. */
4470 struct elf_dyn_relocs *p;
4471 struct elf_dyn_relocs **rel_head;
4473 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4475 if (p == NULL || p->sec != sec)
4477 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4480 p->next = *rel_head;
4487 if (!must_be_dyn_reloc (info, r_type))
4492 /* Track dynamic relocs needed for local syms too.
4493 We really need local syms available to do this
4495 struct ppc_dyn_relocs *p;
4496 struct ppc_dyn_relocs **rel_head;
4497 bfd_boolean is_ifunc;
4500 Elf_Internal_Sym *isym;
4502 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4507 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4511 vpp = &elf_section_data (s)->local_dynrel;
4512 rel_head = (struct ppc_dyn_relocs **) vpp;
4513 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4515 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4517 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4519 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4522 p->next = *rel_head;
4525 p->ifunc = is_ifunc;
4540 /* Merge object attributes from IBFD into OBFD. Raise an error if
4541 there are conflicting attributes. */
4543 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4545 obj_attribute *in_attr, *in_attrs;
4546 obj_attribute *out_attr, *out_attrs;
4548 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4550 /* This is the first object. Copy the attributes. */
4551 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4553 /* Use the Tag_null value to indicate the attributes have been
4555 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4560 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4561 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4563 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4564 non-conflicting ones. */
4565 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4566 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4567 if (in_attr->i != out_attr->i)
4570 if (out_attr->i == 0)
4571 out_attr->i = in_attr->i;
4572 else if (in_attr->i == 0)
4574 else if (out_attr->i == 1 && in_attr->i == 2)
4576 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4577 else if (out_attr->i == 1 && in_attr->i == 3)
4579 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4581 else if (out_attr->i == 3 && in_attr->i == 1)
4583 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4585 else if (out_attr->i == 3 && in_attr->i == 2)
4587 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4589 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4591 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4592 else if (in_attr->i > 3)
4594 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4598 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4602 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4603 merge non-conflicting ones. */
4604 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4605 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4606 if (in_attr->i != out_attr->i)
4608 const char *in_abi = NULL, *out_abi = NULL;
4612 case 1: in_abi = "generic"; break;
4613 case 2: in_abi = "AltiVec"; break;
4614 case 3: in_abi = "SPE"; break;
4617 switch (out_attr->i)
4619 case 1: out_abi = "generic"; break;
4620 case 2: out_abi = "AltiVec"; break;
4621 case 3: out_abi = "SPE"; break;
4625 if (out_attr->i == 0)
4626 out_attr->i = in_attr->i;
4627 else if (in_attr->i == 0)
4629 /* For now, allow generic to transition to AltiVec or SPE
4630 without a warning. If GCC marked files with their stack
4631 alignment and used don't-care markings for files which are
4632 not affected by the vector ABI, we could warn about this
4634 else if (out_attr->i == 1)
4635 out_attr->i = in_attr->i;
4636 else if (in_attr->i == 1)
4638 else if (in_abi == NULL)
4640 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4642 else if (out_abi == NULL)
4644 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4648 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4649 ibfd, obfd, in_abi, out_abi);
4652 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4653 and merge non-conflicting ones. */
4654 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4655 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4656 if (in_attr->i != out_attr->i)
4659 if (out_attr->i == 0)
4660 out_attr->i = in_attr->i;
4661 else if (in_attr->i == 0)
4663 else if (out_attr->i == 1 && in_attr->i == 2)
4665 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4666 else if (out_attr->i == 2 && in_attr->i == 1)
4668 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4669 else if (in_attr->i > 2)
4671 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4675 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4679 /* Merge Tag_compatibility attributes and any common GNU ones. */
4680 _bfd_elf_merge_object_attributes (ibfd, obfd);
4685 /* Merge backend specific data from an object file to the output
4686 object file when linking. */
4689 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4695 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4698 /* Check if we have the same endianness. */
4699 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4702 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4705 new_flags = elf_elfheader (ibfd)->e_flags;
4706 old_flags = elf_elfheader (obfd)->e_flags;
4707 if (!elf_flags_init (obfd))
4709 /* First call, no flags set. */
4710 elf_flags_init (obfd) = TRUE;
4711 elf_elfheader (obfd)->e_flags = new_flags;
4714 /* Compatible flags are ok. */
4715 else if (new_flags == old_flags)
4718 /* Incompatible flags. */
4721 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4722 to be linked with either. */
4724 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4725 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4728 (*_bfd_error_handler)
4729 (_("%B: compiled with -mrelocatable and linked with "
4730 "modules compiled normally"), ibfd);
4732 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4733 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4736 (*_bfd_error_handler)
4737 (_("%B: compiled normally and linked with "
4738 "modules compiled with -mrelocatable"), ibfd);
4741 /* The output is -mrelocatable-lib iff both the input files are. */
4742 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4743 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4745 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4746 but each input file is either -mrelocatable or -mrelocatable-lib. */
4747 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4748 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4749 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4750 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4752 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4753 any module uses it. */
4754 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4756 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4757 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4759 /* Warn about any other mismatches. */
4760 if (new_flags != old_flags)
4763 (*_bfd_error_handler)
4764 (_("%B: uses different e_flags (0x%lx) fields "
4765 "than previous modules (0x%lx)"),
4766 ibfd, (long) new_flags, (long) old_flags);
4771 bfd_set_error (bfd_error_bad_value);
4780 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4782 split16_format_type split16_format)
4785 unsigned int insn, top5;
4787 insn = bfd_get_32 (output_bfd, loc);
4788 top5 = value & 0xf800;
4789 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4791 insn |= value & 0x7ff;
4792 bfd_put_32 (output_bfd, insn, loc);
4796 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4797 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4799 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4800 struct bfd_link_info *info)
4802 struct ppc_elf_link_hash_table *htab;
4805 htab = ppc_elf_hash_table (info);
4807 if (htab->plt_type == PLT_UNSET)
4809 struct elf_link_hash_entry *h;
4811 if (htab->params->plt_style == PLT_OLD)
4812 htab->plt_type = PLT_OLD;
4813 else if (info->shared
4814 && htab->elf.dynamic_sections_created
4815 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4816 FALSE, FALSE, TRUE)) != NULL
4817 && (h->type == STT_FUNC
4820 && !(SYMBOL_CALLS_LOCAL (info, h)
4821 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4822 && h->root.type == bfd_link_hash_undefweak)))
4824 /* Profiling of shared libs (and pies) is not supported with
4825 secure plt, because ppc32 does profiling before a
4826 function prologue and a secure plt pic call stubs needs
4827 r30 to be set up. */
4828 htab->plt_type = PLT_OLD;
4833 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4835 /* Look through the reloc flags left by ppc_elf_check_relocs.
4836 Use the old style bss plt if a file makes plt calls
4837 without using the new relocs, and if ld isn't given
4838 --secure-plt and we never see REL16 relocs. */
4839 if (plt_type == PLT_UNSET)
4841 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4842 if (is_ppc_elf (ibfd))
4844 if (ppc_elf_tdata (ibfd)->has_rel16)
4846 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4849 htab->old_bfd = ibfd;
4853 htab->plt_type = plt_type;
4856 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4858 if (htab->old_bfd != NULL)
4859 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4862 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4865 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4867 if (htab->plt_type == PLT_NEW)
4869 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4870 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4872 /* The new PLT is a loaded section. */
4873 if (htab->plt != NULL
4874 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4877 /* The new GOT is not executable. */
4878 if (htab->got != NULL
4879 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4884 /* Stop an unused .glink section from affecting .text alignment. */
4885 if (htab->glink != NULL
4886 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4889 return htab->plt_type == PLT_NEW;
4892 /* Return the section that should be marked against GC for a given
4896 ppc_elf_gc_mark_hook (asection *sec,
4897 struct bfd_link_info *info,
4898 Elf_Internal_Rela *rel,
4899 struct elf_link_hash_entry *h,
4900 Elf_Internal_Sym *sym)
4903 switch (ELF32_R_TYPE (rel->r_info))
4905 case R_PPC_GNU_VTINHERIT:
4906 case R_PPC_GNU_VTENTRY:
4910 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4913 /* Update the got, plt and dynamic reloc reference counts for the
4914 section being removed. */
4917 ppc_elf_gc_sweep_hook (bfd *abfd,
4918 struct bfd_link_info *info,
4920 const Elf_Internal_Rela *relocs)
4922 struct ppc_elf_link_hash_table *htab;
4923 Elf_Internal_Shdr *symtab_hdr;
4924 struct elf_link_hash_entry **sym_hashes;
4925 bfd_signed_vma *local_got_refcounts;
4926 const Elf_Internal_Rela *rel, *relend;
4929 if (info->relocatable)
4932 if ((sec->flags & SEC_ALLOC) == 0)
4935 elf_section_data (sec)->local_dynrel = NULL;
4937 htab = ppc_elf_hash_table (info);
4938 symtab_hdr = &elf_symtab_hdr (abfd);
4939 sym_hashes = elf_sym_hashes (abfd);
4940 local_got_refcounts = elf_local_got_refcounts (abfd);
4941 got2 = bfd_get_section_by_name (abfd, ".got2");
4943 relend = relocs + sec->reloc_count;
4944 for (rel = relocs; rel < relend; rel++)
4946 unsigned long r_symndx;
4947 enum elf_ppc_reloc_type r_type;
4948 struct elf_link_hash_entry *h = NULL;
4950 r_symndx = ELF32_R_SYM (rel->r_info);
4951 if (r_symndx >= symtab_hdr->sh_info)
4953 struct elf_dyn_relocs **pp, *p;
4954 struct ppc_elf_link_hash_entry *eh;
4956 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4957 while (h->root.type == bfd_link_hash_indirect
4958 || h->root.type == bfd_link_hash_warning)
4959 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4960 eh = (struct ppc_elf_link_hash_entry *) h;
4962 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4965 /* Everything must go for SEC. */
4971 r_type = ELF32_R_TYPE (rel->r_info);
4972 if (!htab->is_vxworks
4974 && local_got_refcounts != NULL
4976 || is_branch_reloc (r_type)))
4978 struct plt_entry **local_plt = (struct plt_entry **)
4979 (local_got_refcounts + symtab_hdr->sh_info);
4980 char *local_got_tls_masks = (char *)
4981 (local_plt + symtab_hdr->sh_info);
4982 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4984 struct plt_entry **ifunc = local_plt + r_symndx;
4986 struct plt_entry *ent;
4988 if (r_type == R_PPC_PLTREL24 && info->shared)
4989 addend = rel->r_addend;
4990 ent = find_plt_ent (ifunc, got2, addend);
4991 if (ent->plt.refcount > 0)
4992 ent->plt.refcount -= 1;
4999 case R_PPC_GOT_TLSLD16:
5000 case R_PPC_GOT_TLSLD16_LO:
5001 case R_PPC_GOT_TLSLD16_HI:
5002 case R_PPC_GOT_TLSLD16_HA:
5003 case R_PPC_GOT_TLSGD16:
5004 case R_PPC_GOT_TLSGD16_LO:
5005 case R_PPC_GOT_TLSGD16_HI:
5006 case R_PPC_GOT_TLSGD16_HA:
5007 case R_PPC_GOT_TPREL16:
5008 case R_PPC_GOT_TPREL16_LO:
5009 case R_PPC_GOT_TPREL16_HI:
5010 case R_PPC_GOT_TPREL16_HA:
5011 case R_PPC_GOT_DTPREL16:
5012 case R_PPC_GOT_DTPREL16_LO:
5013 case R_PPC_GOT_DTPREL16_HI:
5014 case R_PPC_GOT_DTPREL16_HA:
5016 case R_PPC_GOT16_LO:
5017 case R_PPC_GOT16_HI:
5018 case R_PPC_GOT16_HA:
5021 if (h->got.refcount > 0)
5025 struct plt_entry *ent;
5027 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5028 if (ent != NULL && ent->plt.refcount > 0)
5029 ent->plt.refcount -= 1;
5032 else if (local_got_refcounts != NULL)
5034 if (local_got_refcounts[r_symndx] > 0)
5035 local_got_refcounts[r_symndx]--;
5041 case R_PPC_REL14_BRTAKEN:
5042 case R_PPC_REL14_BRNTAKEN:
5044 if (h == NULL || h == htab->elf.hgot)
5051 case R_PPC_ADDR16_LO:
5052 case R_PPC_ADDR16_HI:
5053 case R_PPC_ADDR16_HA:
5055 case R_PPC_ADDR14_BRTAKEN:
5056 case R_PPC_ADDR14_BRNTAKEN:
5063 case R_PPC_PLTREL24:
5064 case R_PPC_PLTREL32:
5065 case R_PPC_PLT16_LO:
5066 case R_PPC_PLT16_HI:
5067 case R_PPC_PLT16_HA:
5071 struct plt_entry *ent;
5073 if (r_type == R_PPC_PLTREL24 && info->shared)
5074 addend = rel->r_addend;
5075 ent = find_plt_ent (&h->plt.plist, got2, addend);
5076 if (ent != NULL && ent->plt.refcount > 0)
5077 ent->plt.refcount -= 1;
5088 /* Set plt output section type, htab->tls_get_addr, and call the
5089 generic ELF tls_setup function. */
5092 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5094 struct ppc_elf_link_hash_table *htab;
5096 htab = ppc_elf_hash_table (info);
5097 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5098 FALSE, FALSE, TRUE);
5099 if (htab->plt_type != PLT_NEW)
5100 htab->params->no_tls_get_addr_opt = TRUE;
5102 if (!htab->params->no_tls_get_addr_opt)
5104 struct elf_link_hash_entry *opt, *tga;
5105 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5106 FALSE, FALSE, TRUE);
5108 && (opt->root.type == bfd_link_hash_defined
5109 || opt->root.type == bfd_link_hash_defweak))
5111 /* If glibc supports an optimized __tls_get_addr call stub,
5112 signalled by the presence of __tls_get_addr_opt, and we'll
5113 be calling __tls_get_addr via a plt call stub, then
5114 make __tls_get_addr point to __tls_get_addr_opt. */
5115 tga = htab->tls_get_addr;
5116 if (htab->elf.dynamic_sections_created
5118 && (tga->type == STT_FUNC
5120 && !(SYMBOL_CALLS_LOCAL (info, tga)
5121 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5122 && tga->root.type == bfd_link_hash_undefweak)))
5124 struct plt_entry *ent;
5125 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5126 if (ent->plt.refcount > 0)
5130 tga->root.type = bfd_link_hash_indirect;
5131 tga->root.u.i.link = &opt->root;
5132 ppc_elf_copy_indirect_symbol (info, opt, tga);
5133 if (opt->dynindx != -1)
5135 /* Use __tls_get_addr_opt in dynamic relocations. */
5137 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5139 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5142 htab->tls_get_addr = opt;
5147 htab->params->no_tls_get_addr_opt = TRUE;
5149 if (htab->plt_type == PLT_NEW
5150 && htab->plt != NULL
5151 && htab->plt->output_section != NULL)
5153 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5154 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5157 return _bfd_elf_tls_setup (obfd, info);
5160 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5164 branch_reloc_hash_match (const bfd *ibfd,
5165 const Elf_Internal_Rela *rel,
5166 const struct elf_link_hash_entry *hash)
5168 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5169 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5170 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5172 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5174 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5175 struct elf_link_hash_entry *h;
5177 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5178 while (h->root.type == bfd_link_hash_indirect
5179 || h->root.type == bfd_link_hash_warning)
5180 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5187 /* Run through all the TLS relocs looking for optimization
5191 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5192 struct bfd_link_info *info)
5196 struct ppc_elf_link_hash_table *htab;
5199 if (info->relocatable || !info->executable)
5202 htab = ppc_elf_hash_table (info);
5206 /* Make two passes through the relocs. First time check that tls
5207 relocs involved in setting up a tls_get_addr call are indeed
5208 followed by such a call. If they are not, don't do any tls
5209 optimization. On the second pass twiddle tls_mask flags to
5210 notify relocate_section that optimization can be done, and
5211 adjust got and plt refcounts. */
5212 for (pass = 0; pass < 2; ++pass)
5213 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5215 Elf_Internal_Sym *locsyms = NULL;
5216 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5217 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5219 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5220 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5222 Elf_Internal_Rela *relstart, *rel, *relend;
5223 int expecting_tls_get_addr = 0;
5225 /* Read the relocations. */
5226 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5228 if (relstart == NULL)
5231 relend = relstart + sec->reloc_count;
5232 for (rel = relstart; rel < relend; rel++)
5234 enum elf_ppc_reloc_type r_type;
5235 unsigned long r_symndx;
5236 struct elf_link_hash_entry *h = NULL;
5238 char tls_set, tls_clear;
5239 bfd_boolean is_local;
5240 bfd_signed_vma *got_count;
5242 r_symndx = ELF32_R_SYM (rel->r_info);
5243 if (r_symndx >= symtab_hdr->sh_info)
5245 struct elf_link_hash_entry **sym_hashes;
5247 sym_hashes = elf_sym_hashes (ibfd);
5248 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5249 while (h->root.type == bfd_link_hash_indirect
5250 || h->root.type == bfd_link_hash_warning)
5251 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5259 r_type = ELF32_R_TYPE (rel->r_info);
5260 /* If this section has old-style __tls_get_addr calls
5261 without marker relocs, then check that each
5262 __tls_get_addr call reloc is preceded by a reloc
5263 that conceivably belongs to the __tls_get_addr arg
5264 setup insn. If we don't find matching arg setup
5265 relocs, don't do any tls optimization. */
5267 && sec->has_tls_get_addr_call
5269 && h == htab->tls_get_addr
5270 && !expecting_tls_get_addr
5271 && is_branch_reloc (r_type))
5273 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5274 "TLS optimization disabled\n",
5275 ibfd, sec, rel->r_offset);
5276 if (elf_section_data (sec)->relocs != relstart)
5281 expecting_tls_get_addr = 0;
5284 case R_PPC_GOT_TLSLD16:
5285 case R_PPC_GOT_TLSLD16_LO:
5286 expecting_tls_get_addr = 1;
5289 case R_PPC_GOT_TLSLD16_HI:
5290 case R_PPC_GOT_TLSLD16_HA:
5291 /* These relocs should never be against a symbol
5292 defined in a shared lib. Leave them alone if
5293 that turns out to be the case. */
5302 case R_PPC_GOT_TLSGD16:
5303 case R_PPC_GOT_TLSGD16_LO:
5304 expecting_tls_get_addr = 1;
5307 case R_PPC_GOT_TLSGD16_HI:
5308 case R_PPC_GOT_TLSGD16_HA:
5314 tls_set = TLS_TLS | TLS_TPRELGD;
5318 case R_PPC_GOT_TPREL16:
5319 case R_PPC_GOT_TPREL16_LO:
5320 case R_PPC_GOT_TPREL16_HI:
5321 case R_PPC_GOT_TPREL16_HA:
5326 tls_clear = TLS_TPREL;
5334 expecting_tls_get_addr = 2;
5345 if (!expecting_tls_get_addr
5346 || (expecting_tls_get_addr == 1
5347 && !sec->has_tls_get_addr_call))
5350 if (rel + 1 < relend
5351 && branch_reloc_hash_match (ibfd, rel + 1,
5352 htab->tls_get_addr))
5355 /* Uh oh, we didn't find the expected call. We
5356 could just mark this symbol to exclude it
5357 from tls optimization but it's safer to skip
5358 the entire optimization. */
5359 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5360 "TLS optimization disabled\n"),
5361 ibfd, sec, rel->r_offset);
5362 if (elf_section_data (sec)->relocs != relstart)
5367 if (expecting_tls_get_addr)
5369 struct plt_entry *ent;
5373 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5374 addend = rel[1].r_addend;
5375 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5377 if (ent != NULL && ent->plt.refcount > 0)
5378 ent->plt.refcount -= 1;
5380 if (expecting_tls_get_addr == 2)
5386 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5387 got_count = &h->got.refcount;
5391 bfd_signed_vma *lgot_refs;
5392 struct plt_entry **local_plt;
5395 if (locsyms == NULL)
5397 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5398 if (locsyms == NULL)
5399 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5400 symtab_hdr->sh_info,
5401 0, NULL, NULL, NULL);
5402 if (locsyms == NULL)
5404 if (elf_section_data (sec)->relocs != relstart)
5409 lgot_refs = elf_local_got_refcounts (ibfd);
5410 if (lgot_refs == NULL)
5412 local_plt = (struct plt_entry **)
5413 (lgot_refs + symtab_hdr->sh_info);
5414 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5415 tls_mask = &lgot_masks[r_symndx];
5416 got_count = &lgot_refs[r_symndx];
5421 /* We managed to get rid of a got entry. */
5426 *tls_mask |= tls_set;
5427 *tls_mask &= ~tls_clear;
5430 if (elf_section_data (sec)->relocs != relstart)
5435 && (symtab_hdr->contents != (unsigned char *) locsyms))
5437 if (!info->keep_memory)
5440 symtab_hdr->contents = (unsigned char *) locsyms;
5446 /* Return true if we have dynamic relocs that apply to read-only sections. */
5449 readonly_dynrelocs (struct elf_link_hash_entry *h)
5451 struct elf_dyn_relocs *p;
5453 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5455 asection *s = p->sec->output_section;
5458 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5459 == (SEC_READONLY | SEC_ALLOC)))
5465 /* Adjust a symbol defined by a dynamic object and referenced by a
5466 regular object. The current definition is in some section of the
5467 dynamic object, but we're not including those sections. We have to
5468 change the definition to something the rest of the link can
5472 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5473 struct elf_link_hash_entry *h)
5475 struct ppc_elf_link_hash_table *htab;
5479 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5480 h->root.root.string);
5483 /* Make sure we know what is going on here. */
5484 htab = ppc_elf_hash_table (info);
5485 BFD_ASSERT (htab->elf.dynobj != NULL
5487 || h->type == STT_GNU_IFUNC
5488 || h->u.weakdef != NULL
5491 && !h->def_regular)));
5493 /* Deal with function syms. */
5494 if (h->type == STT_FUNC
5495 || h->type == STT_GNU_IFUNC
5498 /* Clear procedure linkage table information for any symbol that
5499 won't need a .plt entry. */
5500 struct plt_entry *ent;
5501 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5502 if (ent->plt.refcount > 0)
5505 || (h->type != STT_GNU_IFUNC
5506 && (SYMBOL_CALLS_LOCAL (info, h)
5507 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5508 && h->root.type == bfd_link_hash_undefweak))))
5510 /* A PLT entry is not required/allowed when:
5512 1. We are not using ld.so; because then the PLT entry
5513 can't be set up, so we can't use one. In this case,
5514 ppc_elf_adjust_dynamic_symbol won't even be called.
5516 2. GC has rendered the entry unused.
5518 3. We know for certain that a call to this symbol
5519 will go to this object, or will remain undefined. */
5520 h->plt.plist = NULL;
5522 h->pointer_equality_needed = 0;
5526 /* Taking a function's address in a read/write section
5527 doesn't require us to define the function symbol in the
5528 executable on a plt call stub. A dynamic reloc can
5530 if (h->pointer_equality_needed
5531 && h->type != STT_GNU_IFUNC
5532 && !htab->is_vxworks
5533 && !ppc_elf_hash_entry (h)->has_sda_refs
5534 && !readonly_dynrelocs (h))
5536 h->pointer_equality_needed = 0;
5540 /* After adjust_dynamic_symbol, non_got_ref set in the
5541 non-shared case means that we have allocated space in
5542 .dynbss for the symbol and thus dyn_relocs for this
5543 symbol should be discarded.
5544 If we get here we know we are making a PLT entry for this
5545 symbol, and in an executable we'd normally resolve
5546 relocations against this symbol to the PLT entry. Allow
5547 dynamic relocs if the reference is weak, and the dynamic
5548 relocs will not cause text relocation. */
5549 else if (!h->ref_regular_nonweak
5551 && h->type != STT_GNU_IFUNC
5552 && !htab->is_vxworks
5553 && !ppc_elf_hash_entry (h)->has_sda_refs
5554 && !readonly_dynrelocs (h))
5560 h->plt.plist = NULL;
5562 /* If this is a weak symbol, and there is a real definition, the
5563 processor independent code will have arranged for us to see the
5564 real definition first, and we can just use the same value. */
5565 if (h->u.weakdef != NULL)
5567 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5568 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5569 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5570 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5571 if (ELIMINATE_COPY_RELOCS)
5572 h->non_got_ref = h->u.weakdef->non_got_ref;
5576 /* This is a reference to a symbol defined by a dynamic object which
5577 is not a function. */
5579 /* If we are creating a shared library, we must presume that the
5580 only references to the symbol are via the global offset table.
5581 For such cases we need not do anything here; the relocations will
5582 be handled correctly by relocate_section. */
5586 /* If there are no references to this symbol that do not use the
5587 GOT, we don't need to generate a copy reloc. */
5588 if (!h->non_got_ref)
5591 /* If -z nocopyreloc was given, we won't generate them either. */
5592 if (info->nocopyreloc)
5598 /* If we didn't find any dynamic relocs in read-only sections, then
5599 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5600 We can't do this if there are any small data relocations. This
5601 doesn't work on VxWorks, where we can not have dynamic
5602 relocations (other than copy and jump slot relocations) in an
5604 if (ELIMINATE_COPY_RELOCS
5605 && !ppc_elf_hash_entry (h)->has_sda_refs
5606 && !htab->is_vxworks
5608 && !readonly_dynrelocs (h))
5614 /* Protected variables do not work with .dynbss. The copy in
5615 .dynbss won't be used by the shared library with the protected
5616 definition for the variable. Text relocations are preferable
5617 to an incorrect program. */
5618 if (h->protected_def)
5624 /* We must allocate the symbol in our .dynbss section, which will
5625 become part of the .bss section of the executable. There will be
5626 an entry for this symbol in the .dynsym section. The dynamic
5627 object will contain position independent code, so all references
5628 from the dynamic object to this symbol will go through the global
5629 offset table. The dynamic linker will use the .dynsym entry to
5630 determine the address it must put in the global offset table, so
5631 both the dynamic object and the regular object will refer to the
5632 same memory location for the variable.
5634 Of course, if the symbol is referenced using SDAREL relocs, we
5635 must instead allocate it in .sbss. */
5637 if (ppc_elf_hash_entry (h)->has_sda_refs)
5641 BFD_ASSERT (s != NULL);
5643 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5644 copy the initial value out of the dynamic object and into the
5645 runtime process image. We need to remember the offset into the
5646 .rela.bss section we are going to use. */
5647 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5651 if (ppc_elf_hash_entry (h)->has_sda_refs)
5652 srel = htab->relsbss;
5654 srel = htab->relbss;
5655 BFD_ASSERT (srel != NULL);
5656 srel->size += sizeof (Elf32_External_Rela);
5660 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5663 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5664 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5665 specifying the addend on the plt relocation. For -fpic code, the sym
5666 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5667 xxxxxxxx.got2.plt_pic32.<callee>. */
5670 add_stub_sym (struct plt_entry *ent,
5671 struct elf_link_hash_entry *h,
5672 struct bfd_link_info *info)
5674 struct elf_link_hash_entry *sh;
5675 size_t len1, len2, len3;
5678 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5681 stub = ".plt_pic32.";
5683 stub = ".plt_call32.";
5685 len1 = strlen (h->root.root.string);
5686 len2 = strlen (stub);
5689 len3 = strlen (ent->sec->name);
5690 name = bfd_malloc (len1 + len2 + len3 + 9);
5693 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5695 memcpy (name + 8, ent->sec->name, len3);
5696 memcpy (name + 8 + len3, stub, len2);
5697 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5698 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5701 if (sh->root.type == bfd_link_hash_new)
5703 sh->root.type = bfd_link_hash_defined;
5704 sh->root.u.def.section = htab->glink;
5705 sh->root.u.def.value = ent->glink_offset;
5706 sh->ref_regular = 1;
5707 sh->def_regular = 1;
5708 sh->ref_regular_nonweak = 1;
5709 sh->forced_local = 1;
5711 sh->root.linker_def = 1;
5716 /* Allocate NEED contiguous space in .got, and return the offset.
5717 Handles allocation of the got header when crossing 32k. */
5720 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5723 unsigned int max_before_header;
5725 if (htab->plt_type == PLT_VXWORKS)
5727 where = htab->got->size;
5728 htab->got->size += need;
5732 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5733 if (need <= htab->got_gap)
5735 where = max_before_header - htab->got_gap;
5736 htab->got_gap -= need;
5740 if (htab->got->size + need > max_before_header
5741 && htab->got->size <= max_before_header)
5743 htab->got_gap = max_before_header - htab->got->size;
5744 htab->got->size = max_before_header + htab->got_header_size;
5746 where = htab->got->size;
5747 htab->got->size += need;
5753 /* Allocate space in associated reloc sections for dynamic relocs. */
5756 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5758 struct bfd_link_info *info = inf;
5759 struct ppc_elf_link_hash_entry *eh;
5760 struct ppc_elf_link_hash_table *htab;
5761 struct elf_dyn_relocs *p;
5763 if (h->root.type == bfd_link_hash_indirect)
5766 htab = ppc_elf_hash_table (info);
5767 if (htab->elf.dynamic_sections_created
5768 || h->type == STT_GNU_IFUNC)
5770 struct plt_entry *ent;
5771 bfd_boolean doneone = FALSE;
5772 bfd_vma plt_offset = 0, glink_offset = 0;
5775 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5776 if (ent->plt.refcount > 0)
5778 /* Make sure this symbol is output as a dynamic symbol. */
5779 if (h->dynindx == -1
5782 && htab->elf.dynamic_sections_created)
5784 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5788 dyn = htab->elf.dynamic_sections_created;
5790 || h->type == STT_GNU_IFUNC
5791 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5793 asection *s = htab->plt;
5794 if (!dyn || h->dynindx == -1)
5797 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5801 plt_offset = s->size;
5804 ent->plt.offset = plt_offset;
5807 if (!doneone || info->shared)
5809 glink_offset = s->size;
5810 s->size += GLINK_ENTRY_SIZE;
5811 if (h == htab->tls_get_addr
5812 && !htab->params->no_tls_get_addr_opt)
5813 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5820 h->root.u.def.section = s;
5821 h->root.u.def.value = glink_offset;
5823 ent->glink_offset = glink_offset;
5825 if (htab->params->emit_stub_syms
5826 && !add_stub_sym (ent, h, info))
5833 /* If this is the first .plt entry, make room
5834 for the special first entry. */
5836 s->size += htab->plt_initial_entry_size;
5838 /* The PowerPC PLT is actually composed of two
5839 parts, the first part is 2 words (for a load
5840 and a jump), and then there is a remaining
5841 word available at the end. */
5842 plt_offset = (htab->plt_initial_entry_size
5843 + (htab->plt_slot_size
5845 - htab->plt_initial_entry_size)
5846 / htab->plt_entry_size)));
5848 /* If this symbol is not defined in a regular
5849 file, and we are not generating a shared
5850 library, then set the symbol to this location
5851 in the .plt. This is to avoid text
5852 relocations, and is required to make
5853 function pointers compare as equal between
5854 the normal executable and the shared library. */
5859 h->root.u.def.section = s;
5860 h->root.u.def.value = plt_offset;
5863 /* Make room for this entry. */
5864 s->size += htab->plt_entry_size;
5865 /* After the 8192nd entry, room for two entries
5867 if (htab->plt_type == PLT_OLD
5868 && (s->size - htab->plt_initial_entry_size)
5869 / htab->plt_entry_size
5870 > PLT_NUM_SINGLE_ENTRIES)
5871 s->size += htab->plt_entry_size;
5873 ent->plt.offset = plt_offset;
5876 /* We also need to make an entry in the .rela.plt section. */
5879 if (!htab->elf.dynamic_sections_created
5880 || h->dynindx == -1)
5881 htab->reliplt->size += sizeof (Elf32_External_Rela);
5884 htab->relplt->size += sizeof (Elf32_External_Rela);
5886 if (htab->plt_type == PLT_VXWORKS)
5888 /* Allocate space for the unloaded relocations. */
5890 && htab->elf.dynamic_sections_created)
5893 == (bfd_vma) htab->plt_initial_entry_size)
5895 htab->srelplt2->size
5896 += (sizeof (Elf32_External_Rela)
5897 * VXWORKS_PLTRESOLVE_RELOCS);
5900 htab->srelplt2->size
5901 += (sizeof (Elf32_External_Rela)
5902 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5905 /* Every PLT entry has an associated GOT entry in
5907 htab->sgotplt->size += 4;
5914 ent->plt.offset = (bfd_vma) -1;
5917 ent->plt.offset = (bfd_vma) -1;
5921 h->plt.plist = NULL;
5927 h->plt.plist = NULL;
5931 eh = (struct ppc_elf_link_hash_entry *) h;
5932 if (eh->elf.got.refcount > 0)
5937 /* Make sure this symbol is output as a dynamic symbol. */
5938 if (eh->elf.dynindx == -1
5939 && !eh->elf.forced_local
5940 && eh->elf.type != STT_GNU_IFUNC
5941 && htab->elf.dynamic_sections_created)
5943 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5948 if ((eh->tls_mask & TLS_TLS) != 0)
5950 if ((eh->tls_mask & TLS_LD) != 0)
5952 if (!eh->elf.def_dynamic)
5953 /* We'll just use htab->tlsld_got.offset. This should
5954 always be the case. It's a little odd if we have
5955 a local dynamic reloc against a non-local symbol. */
5956 htab->tlsld_got.refcount += 1;
5960 if ((eh->tls_mask & TLS_GD) != 0)
5962 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5964 if ((eh->tls_mask & TLS_DTPREL) != 0)
5970 eh->elf.got.offset = (bfd_vma) -1;
5973 eh->elf.got.offset = allocate_got (htab, need);
5974 dyn = htab->elf.dynamic_sections_created;
5976 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5977 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5978 || eh->elf.root.type != bfd_link_hash_undefweak))
5980 asection *rsec = htab->relgot;
5982 if (eh->elf.type == STT_GNU_IFUNC)
5983 rsec = htab->reliplt;
5984 /* All the entries we allocated need relocs.
5985 Except LD only needs one. */
5986 if ((eh->tls_mask & TLS_LD) != 0
5987 && eh->elf.def_dynamic)
5989 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5994 eh->elf.got.offset = (bfd_vma) -1;
5996 if (eh->dyn_relocs == NULL
5997 || !htab->elf.dynamic_sections_created)
6000 /* In the shared -Bsymbolic case, discard space allocated for
6001 dynamic pc-relative relocs against symbols which turn out to be
6002 defined in regular objects. For the normal shared case, discard
6003 space for relocs that have become local due to symbol visibility
6008 /* Relocs that use pc_count are those that appear on a call insn,
6009 or certain REL relocs (see must_be_dyn_reloc) that can be
6010 generated via assembly. We want calls to protected symbols to
6011 resolve directly to the function rather than going via the plt.
6012 If people want function pointer comparisons to work as expected
6013 then they should avoid writing weird assembly. */
6014 if (SYMBOL_CALLS_LOCAL (info, h))
6016 struct elf_dyn_relocs **pp;
6018 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6020 p->count -= p->pc_count;
6029 if (htab->is_vxworks)
6031 struct elf_dyn_relocs **pp;
6033 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6035 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6042 /* Discard relocs on undefined symbols that must be local. */
6043 if (eh->dyn_relocs != NULL
6044 && h->root.type == bfd_link_hash_undefined
6045 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6046 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6047 eh->dyn_relocs = NULL;
6049 /* Also discard relocs on undefined weak syms with non-default
6051 if (eh->dyn_relocs != NULL
6052 && h->root.type == bfd_link_hash_undefweak)
6054 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6055 eh->dyn_relocs = NULL;
6057 /* Make sure undefined weak symbols are output as a dynamic
6059 else if (h->dynindx == -1
6063 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6068 else if (ELIMINATE_COPY_RELOCS)
6070 /* For the non-shared case, discard space for relocs against
6071 symbols which turn out to need copy relocs or are not
6077 /* Make sure this symbol is output as a dynamic symbol.
6078 Undefined weak syms won't yet be marked as dynamic. */
6079 if (h->dynindx == -1
6080 && !h->forced_local)
6082 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6086 /* If that succeeded, we know we'll be keeping all the
6088 if (h->dynindx != -1)
6092 eh->dyn_relocs = NULL;
6097 /* Finally, allocate space. */
6098 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6100 asection *sreloc = elf_section_data (p->sec)->sreloc;
6101 if (eh->elf.type == STT_GNU_IFUNC)
6102 sreloc = htab->reliplt;
6103 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6109 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6110 read-only sections. */
6113 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6115 if (h->root.type == bfd_link_hash_indirect)
6118 if (readonly_dynrelocs (h))
6120 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6122 /* Not an error, just cut short the traversal. */
6128 static const unsigned char glink_eh_frame_cie[] =
6130 0, 0, 0, 16, /* length. */
6131 0, 0, 0, 0, /* id. */
6132 1, /* CIE version. */
6133 'z', 'R', 0, /* Augmentation string. */
6134 4, /* Code alignment. */
6135 0x7c, /* Data alignment. */
6137 1, /* Augmentation size. */
6138 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6139 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6142 /* Set the sizes of the dynamic sections. */
6145 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6146 struct bfd_link_info *info)
6148 struct ppc_elf_link_hash_table *htab;
6154 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6157 htab = ppc_elf_hash_table (info);
6158 BFD_ASSERT (htab->elf.dynobj != NULL);
6160 if (elf_hash_table (info)->dynamic_sections_created)
6162 /* Set the contents of the .interp section to the interpreter. */
6163 if (info->executable)
6165 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6166 BFD_ASSERT (s != NULL);
6167 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6168 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6172 if (htab->plt_type == PLT_OLD)
6173 htab->got_header_size = 16;
6174 else if (htab->plt_type == PLT_NEW)
6175 htab->got_header_size = 12;
6177 /* Set up .got offsets for local syms, and space for local dynamic
6179 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6181 bfd_signed_vma *local_got;
6182 bfd_signed_vma *end_local_got;
6183 struct plt_entry **local_plt;
6184 struct plt_entry **end_local_plt;
6186 bfd_size_type locsymcount;
6187 Elf_Internal_Shdr *symtab_hdr;
6189 if (!is_ppc_elf (ibfd))
6192 for (s = ibfd->sections; s != NULL; s = s->next)
6194 struct ppc_dyn_relocs *p;
6196 for (p = ((struct ppc_dyn_relocs *)
6197 elf_section_data (s)->local_dynrel);
6201 if (!bfd_is_abs_section (p->sec)
6202 && bfd_is_abs_section (p->sec->output_section))
6204 /* Input section has been discarded, either because
6205 it is a copy of a linkonce section or due to
6206 linker script /DISCARD/, so we'll be discarding
6209 else if (htab->is_vxworks
6210 && strcmp (p->sec->output_section->name,
6213 /* Relocations in vxworks .tls_vars sections are
6214 handled specially by the loader. */
6216 else if (p->count != 0)
6218 asection *sreloc = elf_section_data (p->sec)->sreloc;
6220 sreloc = htab->reliplt;
6221 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6222 if ((p->sec->output_section->flags
6223 & (SEC_READONLY | SEC_ALLOC))
6224 == (SEC_READONLY | SEC_ALLOC))
6225 info->flags |= DF_TEXTREL;
6230 local_got = elf_local_got_refcounts (ibfd);
6234 symtab_hdr = &elf_symtab_hdr (ibfd);
6235 locsymcount = symtab_hdr->sh_info;
6236 end_local_got = local_got + locsymcount;
6237 local_plt = (struct plt_entry **) end_local_got;
6238 end_local_plt = local_plt + locsymcount;
6239 lgot_masks = (char *) end_local_plt;
6241 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6244 unsigned int need = 0;
6245 if ((*lgot_masks & TLS_TLS) != 0)
6247 if ((*lgot_masks & TLS_GD) != 0)
6249 if ((*lgot_masks & TLS_LD) != 0)
6250 htab->tlsld_got.refcount += 1;
6251 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6253 if ((*lgot_masks & TLS_DTPREL) != 0)
6259 *local_got = (bfd_vma) -1;
6262 *local_got = allocate_got (htab, need);
6265 asection *srel = htab->relgot;
6266 if ((*lgot_masks & PLT_IFUNC) != 0)
6267 srel = htab->reliplt;
6268 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6273 *local_got = (bfd_vma) -1;
6275 if (htab->is_vxworks)
6278 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6279 for (; local_plt < end_local_plt; ++local_plt)
6281 struct plt_entry *ent;
6282 bfd_boolean doneone = FALSE;
6283 bfd_vma plt_offset = 0, glink_offset = 0;
6285 for (ent = *local_plt; ent != NULL; ent = ent->next)
6286 if (ent->plt.refcount > 0)
6292 plt_offset = s->size;
6295 ent->plt.offset = plt_offset;
6298 if (!doneone || info->shared)
6300 glink_offset = s->size;
6301 s->size += GLINK_ENTRY_SIZE;
6303 ent->glink_offset = glink_offset;
6307 htab->reliplt->size += sizeof (Elf32_External_Rela);
6312 ent->plt.offset = (bfd_vma) -1;
6316 /* Allocate space for global sym dynamic relocs. */
6317 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6319 if (htab->tlsld_got.refcount > 0)
6321 htab->tlsld_got.offset = allocate_got (htab, 8);
6323 htab->relgot->size += sizeof (Elf32_External_Rela);
6326 htab->tlsld_got.offset = (bfd_vma) -1;
6328 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6330 unsigned int g_o_t = 32768;
6332 /* If we haven't allocated the header, do so now. When we get here,
6333 for old plt/got the got size will be 0 to 32764 (not allocated),
6334 or 32780 to 65536 (header allocated). For new plt/got, the
6335 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6336 if (htab->got->size <= 32768)
6338 g_o_t = htab->got->size;
6339 if (htab->plt_type == PLT_OLD)
6341 htab->got->size += htab->got_header_size;
6344 htab->elf.hgot->root.u.def.value = g_o_t;
6348 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6350 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6351 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6353 if (info->emitrelocations)
6355 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6357 if (sda != NULL && sda->ref_regular)
6358 sda->root.u.def.section->flags |= SEC_KEEP;
6359 sda = htab->sdata[1].sym;
6360 if (sda != NULL && sda->ref_regular)
6361 sda->root.u.def.section->flags |= SEC_KEEP;
6364 if (htab->glink != NULL
6365 && htab->glink->size != 0
6366 && htab->elf.dynamic_sections_created)
6368 htab->glink_pltresolve = htab->glink->size;
6369 /* Space for the branch table. */
6370 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6371 /* Pad out to align the start of PLTresolve. */
6372 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6374 htab->glink->size += GLINK_PLTRESOLVE;
6376 if (htab->params->emit_stub_syms)
6378 struct elf_link_hash_entry *sh;
6379 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6380 TRUE, FALSE, FALSE);
6383 if (sh->root.type == bfd_link_hash_new)
6385 sh->root.type = bfd_link_hash_defined;
6386 sh->root.u.def.section = htab->glink;
6387 sh->root.u.def.value = htab->glink_pltresolve;
6388 sh->ref_regular = 1;
6389 sh->def_regular = 1;
6390 sh->ref_regular_nonweak = 1;
6391 sh->forced_local = 1;
6393 sh->root.linker_def = 1;
6395 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6396 TRUE, FALSE, FALSE);
6399 if (sh->root.type == bfd_link_hash_new)
6401 sh->root.type = bfd_link_hash_defined;
6402 sh->root.u.def.section = htab->glink;
6403 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6404 sh->ref_regular = 1;
6405 sh->def_regular = 1;
6406 sh->ref_regular_nonweak = 1;
6407 sh->forced_local = 1;
6409 sh->root.linker_def = 1;
6414 if (htab->glink != NULL
6415 && htab->glink->size != 0
6416 && htab->glink_eh_frame != NULL
6417 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6418 && _bfd_elf_eh_frame_present (info))
6420 s = htab->glink_eh_frame;
6421 s->size = sizeof (glink_eh_frame_cie) + 20;
6425 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6430 /* We've now determined the sizes of the various dynamic sections.
6431 Allocate memory for them. */
6433 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6435 bfd_boolean strip_section = TRUE;
6437 if ((s->flags & SEC_LINKER_CREATED) == 0)
6443 /* We'd like to strip these sections if they aren't needed, but if
6444 we've exported dynamic symbols from them we must leave them.
6445 It's too late to tell BFD to get rid of the symbols. */
6446 if (htab->elf.hplt != NULL)
6447 strip_section = FALSE;
6448 /* Strip this section if we don't need it; see the
6451 else if (s == htab->iplt
6453 || s == htab->glink_eh_frame
6454 || s == htab->sgotplt
6456 || s == htab->dynbss
6457 || s == htab->dynsbss)
6459 /* Strip these too. */
6461 else if (s == htab->sdata[0].section
6462 || s == htab->sdata[1].section)
6464 strip_section = (s->flags & SEC_KEEP) == 0;
6466 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6471 /* Remember whether there are any relocation sections. */
6474 /* We use the reloc_count field as a counter if we need
6475 to copy relocs into the output file. */
6481 /* It's not one of our sections, so don't allocate space. */
6485 if (s->size == 0 && strip_section)
6487 /* If we don't need this section, strip it from the
6488 output file. This is mostly to handle .rela.bss and
6489 .rela.plt. We must create both sections in
6490 create_dynamic_sections, because they must be created
6491 before the linker maps input sections to output
6492 sections. The linker does that before
6493 adjust_dynamic_symbol is called, and it is that
6494 function which decides whether anything needs to go
6495 into these sections. */
6496 s->flags |= SEC_EXCLUDE;
6500 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6503 /* Allocate memory for the section contents. */
6504 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6505 if (s->contents == NULL)
6509 if (htab->elf.dynamic_sections_created)
6511 /* Add some entries to the .dynamic section. We fill in the
6512 values later, in ppc_elf_finish_dynamic_sections, but we
6513 must add the entries now so that we get the correct size for
6514 the .dynamic section. The DT_DEBUG entry is filled in by the
6515 dynamic linker and used by the debugger. */
6516 #define add_dynamic_entry(TAG, VAL) \
6517 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6519 if (info->executable)
6521 if (!add_dynamic_entry (DT_DEBUG, 0))
6525 if (htab->plt != NULL && htab->plt->size != 0)
6527 if (!add_dynamic_entry (DT_PLTGOT, 0)
6528 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6529 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6530 || !add_dynamic_entry (DT_JMPREL, 0))
6534 if (htab->plt_type == PLT_NEW
6535 && htab->glink != NULL
6536 && htab->glink->size != 0)
6538 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6540 if (!htab->params->no_tls_get_addr_opt
6541 && htab->tls_get_addr != NULL
6542 && htab->tls_get_addr->plt.plist != NULL
6543 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6549 if (!add_dynamic_entry (DT_RELA, 0)
6550 || !add_dynamic_entry (DT_RELASZ, 0)
6551 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6555 /* If any dynamic relocs apply to a read-only section, then we
6556 need a DT_TEXTREL entry. */
6557 if ((info->flags & DF_TEXTREL) == 0)
6558 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6561 if ((info->flags & DF_TEXTREL) != 0)
6563 if (!add_dynamic_entry (DT_TEXTREL, 0))
6566 if (htab->is_vxworks
6567 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6570 #undef add_dynamic_entry
6572 if (htab->glink_eh_frame != NULL
6573 && htab->glink_eh_frame->contents != NULL)
6575 unsigned char *p = htab->glink_eh_frame->contents;
6578 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6579 /* CIE length (rewrite in case little-endian). */
6580 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6581 p += sizeof (glink_eh_frame_cie);
6583 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6584 bfd_put_32 (htab->elf.dynobj, val, p);
6587 val = p - htab->glink_eh_frame->contents;
6588 bfd_put_32 (htab->elf.dynobj, val, p);
6590 /* Offset to .glink. Set later. */
6593 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6599 && htab->elf.dynamic_sections_created)
6601 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6603 *p++ = DW_CFA_advance_loc + adv;
6606 *p++ = DW_CFA_advance_loc1;
6609 else if (adv < 65536)
6611 *p++ = DW_CFA_advance_loc2;
6612 bfd_put_16 (htab->elf.dynobj, adv, p);
6617 *p++ = DW_CFA_advance_loc4;
6618 bfd_put_32 (htab->elf.dynobj, adv, p);
6621 *p++ = DW_CFA_register;
6624 *p++ = DW_CFA_advance_loc + 4;
6625 *p++ = DW_CFA_restore_extended;
6628 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6629 == htab->glink_eh_frame->size);
6635 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6636 if it looks like nothing is using them. */
6639 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6641 struct elf_link_hash_entry *sda = lsect->sym;
6643 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6647 s = bfd_get_section_by_name (output_bfd, lsect->name);
6648 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6650 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6651 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6653 sda->def_regular = 0;
6654 /* This is somewhat magic. See elf_link_output_extsym. */
6655 sda->ref_dynamic = 1;
6656 sda->forced_local = 0;
6663 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6665 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6669 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6670 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6675 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6678 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6680 if (h->plt.plist != NULL
6682 && (!h->pointer_equality_needed
6683 || !h->ref_regular_nonweak))
6686 return _bfd_elf_hash_symbol (h);
6689 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6691 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6692 used for some functions that are allowed to break the ABI). */
6693 static const int shared_stub_entry[] =
6695 0x7c0802a6, /* mflr 0 */
6696 0x429f0005, /* bcl 20, 31, .Lxxx */
6697 0x7d8802a6, /* mflr 12 */
6698 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6699 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6700 0x7c0803a6, /* mtlr 0 */
6701 0x7d8903a6, /* mtctr 12 */
6702 0x4e800420, /* bctr */
6705 static const int stub_entry[] =
6707 0x3d800000, /* lis 12,xxx@ha */
6708 0x398c0000, /* addi 12,12,xxx@l */
6709 0x7d8903a6, /* mtctr 12 */
6710 0x4e800420, /* bctr */
6713 struct ppc_elf_relax_info
6715 unsigned int workaround_size;
6718 /* This function implements long branch trampolines, and the ppc476
6719 icache bug workaround. Any section needing trampolines or patch
6720 space for the workaround has its size extended so that we can
6721 add trampolines at the end of the section. */
6724 ppc_elf_relax_section (bfd *abfd,
6726 struct bfd_link_info *link_info,
6731 struct one_fixup *next;
6733 /* Final link, can use the symbol offset. For a
6734 relocatable link we use the symbol's index. */
6739 Elf_Internal_Shdr *symtab_hdr;
6740 bfd_byte *contents = NULL;
6741 Elf_Internal_Sym *isymbuf = NULL;
6742 Elf_Internal_Rela *internal_relocs = NULL;
6743 Elf_Internal_Rela *irel, *irelend = NULL;
6744 struct one_fixup *fixups = NULL;
6745 struct ppc_elf_relax_info *relax_info = NULL;
6746 unsigned changes = 0;
6747 bfd_boolean workaround_change;
6748 struct ppc_elf_link_hash_table *htab;
6749 bfd_size_type trampbase, trampoff, newsize;
6751 bfd_boolean maybe_pasted;
6755 /* No need to do anything with non-alloc or non-code sections. */
6756 if ((isec->flags & SEC_ALLOC) == 0
6757 || (isec->flags & SEC_CODE) == 0
6758 || (isec->flags & SEC_LINKER_CREATED) != 0
6762 /* We cannot represent the required PIC relocs in the output, so don't
6763 do anything. The linker doesn't support mixing -shared and -r
6765 if (link_info->relocatable && link_info->shared)
6768 htab = ppc_elf_hash_table (link_info);
6772 isec->size = (isec->size + 3) & -4;
6773 if (isec->rawsize == 0)
6774 isec->rawsize = isec->size;
6775 trampbase = isec->size;
6777 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6778 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6779 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6781 if (htab->params->ppc476_workaround)
6783 if (elf_section_data (isec)->sec_info == NULL)
6785 elf_section_data (isec)->sec_info
6786 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6787 if (elf_section_data (isec)->sec_info == NULL)
6790 relax_info = elf_section_data (isec)->sec_info;
6791 trampbase -= relax_info->workaround_size;
6794 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6795 || strcmp (isec->output_section->name, ".fini") == 0);
6796 /* Space for a branch around any trampolines. */
6797 trampoff = trampbase;
6798 if (maybe_pasted && trampbase == isec->rawsize)
6801 symtab_hdr = &elf_symtab_hdr (abfd);
6803 if (htab->params->branch_trampolines)
6805 /* Get a copy of the native relocations. */
6806 if (isec->reloc_count != 0)
6808 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6809 link_info->keep_memory);
6810 if (internal_relocs == NULL)
6814 got2 = bfd_get_section_by_name (abfd, ".got2");
6816 irelend = internal_relocs + isec->reloc_count;
6817 for (irel = internal_relocs; irel < irelend; irel++)
6819 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6822 struct one_fixup *f;
6823 size_t insn_offset = 0;
6824 bfd_vma max_branch_offset, val;
6827 struct elf_link_hash_entry *h;
6828 struct plt_entry **plist;
6829 unsigned char sym_type;
6834 case R_PPC_LOCAL24PC:
6835 case R_PPC_PLTREL24:
6836 max_branch_offset = 1 << 25;
6840 case R_PPC_REL14_BRTAKEN:
6841 case R_PPC_REL14_BRNTAKEN:
6842 max_branch_offset = 1 << 15;
6849 /* Get the value of the symbol referred to by the reloc. */
6851 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6853 /* A local symbol. */
6854 Elf_Internal_Sym *isym;
6856 /* Read this BFD's local symbols. */
6857 if (isymbuf == NULL)
6859 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6860 if (isymbuf == NULL)
6861 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6862 symtab_hdr->sh_info, 0,
6867 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6868 if (isym->st_shndx == SHN_UNDEF)
6869 tsec = bfd_und_section_ptr;
6870 else if (isym->st_shndx == SHN_ABS)
6871 tsec = bfd_abs_section_ptr;
6872 else if (isym->st_shndx == SHN_COMMON)
6873 tsec = bfd_com_section_ptr;
6875 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6877 toff = isym->st_value;
6878 sym_type = ELF_ST_TYPE (isym->st_info);
6882 /* Global symbol handling. */
6885 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6886 h = elf_sym_hashes (abfd)[indx];
6888 while (h->root.type == bfd_link_hash_indirect
6889 || h->root.type == bfd_link_hash_warning)
6890 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6892 if (h->root.type == bfd_link_hash_defined
6893 || h->root.type == bfd_link_hash_defweak)
6895 tsec = h->root.u.def.section;
6896 toff = h->root.u.def.value;
6898 else if (h->root.type == bfd_link_hash_undefined
6899 || h->root.type == bfd_link_hash_undefweak)
6901 tsec = bfd_und_section_ptr;
6902 toff = link_info->relocatable ? indx : 0;
6907 /* If this branch is to __tls_get_addr then we may later
6908 optimise away the call. We won't be needing a long-
6909 branch stub in that case. */
6910 if (link_info->executable
6911 && !link_info->relocatable
6912 && h == htab->tls_get_addr
6913 && irel != internal_relocs)
6915 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6916 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6917 unsigned int tls_mask = 0;
6919 /* The previous reloc should be one of R_PPC_TLSGD or
6920 R_PPC_TLSLD, or for older object files, a reloc
6921 on the __tls_get_addr arg setup insn. Get tls
6922 mask bits from the symbol on that reloc. */
6923 if (t_symndx < symtab_hdr->sh_info)
6925 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6927 if (local_got_offsets != NULL)
6929 struct plt_entry **local_plt = (struct plt_entry **)
6930 (local_got_offsets + symtab_hdr->sh_info);
6931 char *lgot_masks = (char *)
6932 (local_plt + symtab_hdr->sh_info);
6933 tls_mask = lgot_masks[t_symndx];
6938 struct elf_link_hash_entry *th
6939 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6941 while (th->root.type == bfd_link_hash_indirect
6942 || th->root.type == bfd_link_hash_warning)
6943 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6946 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6949 /* The mask bits tell us if the call will be
6951 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6952 && (t_rtype == R_PPC_TLSGD
6953 || t_rtype == R_PPC_GOT_TLSGD16
6954 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6956 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6957 && (t_rtype == R_PPC_TLSLD
6958 || t_rtype == R_PPC_GOT_TLSLD16
6959 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6966 /* The condition here under which we call find_plt_ent must
6967 match that in relocate_section. If we call find_plt_ent here
6968 but not in relocate_section, or vice versa, then the branch
6969 destination used here may be incorrect. */
6973 /* We know is_branch_reloc (r_type) is true. */
6974 if (h->type == STT_GNU_IFUNC
6975 || r_type == R_PPC_PLTREL24)
6976 plist = &h->plt.plist;
6978 else if (sym_type == STT_GNU_IFUNC
6979 && elf_local_got_offsets (abfd) != NULL)
6981 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6982 struct plt_entry **local_plt = (struct plt_entry **)
6983 (local_got_offsets + symtab_hdr->sh_info);
6984 plist = local_plt + ELF32_R_SYM (irel->r_info);
6989 struct plt_entry *ent;
6991 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6992 addend = irel->r_addend;
6993 ent = find_plt_ent (plist, got2, addend);
6996 if (htab->plt_type == PLT_NEW
6998 || !htab->elf.dynamic_sections_created
6999 || h->dynindx == -1)
7002 toff = ent->glink_offset;
7007 toff = ent->plt.offset;
7012 /* If the branch and target are in the same section, you have
7013 no hope of adding stubs. We'll error out later should the
7018 /* There probably isn't any reason to handle symbols in
7019 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7020 attribute for a code section, and we are only looking at
7021 branches. However, implement it correctly here as a
7022 reference for other target relax_section functions. */
7023 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7025 /* At this stage in linking, no SEC_MERGE symbol has been
7026 adjusted, so all references to such symbols need to be
7027 passed through _bfd_merged_section_offset. (Later, in
7028 relocate_section, all SEC_MERGE symbols *except* for
7029 section symbols have been adjusted.)
7031 gas may reduce relocations against symbols in SEC_MERGE
7032 sections to a relocation against the section symbol when
7033 the original addend was zero. When the reloc is against
7034 a section symbol we should include the addend in the
7035 offset passed to _bfd_merged_section_offset, since the
7036 location of interest is the original symbol. On the
7037 other hand, an access to "sym+addend" where "sym" is not
7038 a section symbol should not include the addend; Such an
7039 access is presumed to be an offset from "sym"; The
7040 location of interest is just "sym". */
7041 if (sym_type == STT_SECTION)
7042 toff += irel->r_addend;
7045 = _bfd_merged_section_offset (abfd, &tsec,
7046 elf_section_data (tsec)->sec_info,
7049 if (sym_type != STT_SECTION)
7050 toff += irel->r_addend;
7052 /* PLTREL24 addends are special. */
7053 else if (r_type != R_PPC_PLTREL24)
7054 toff += irel->r_addend;
7056 /* Attempted -shared link of non-pic code loses. */
7057 if ((!link_info->relocatable
7058 && tsec == bfd_und_section_ptr)
7059 || tsec->output_section == NULL
7060 || (tsec->owner != NULL
7061 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7064 roff = irel->r_offset;
7066 /* If the branch is in range, no need to do anything. */
7067 if (tsec != bfd_und_section_ptr
7068 && (!link_info->relocatable
7069 /* A relocatable link may have sections moved during
7070 final link, so do not presume they remain in range. */
7071 || tsec->output_section == isec->output_section))
7073 bfd_vma symaddr, reladdr;
7075 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7076 reladdr = isec->output_section->vma + isec->output_offset + roff;
7077 if (symaddr - reladdr + max_branch_offset
7078 < 2 * max_branch_offset)
7082 /* Look for an existing fixup to this address. */
7083 for (f = fixups; f ; f = f->next)
7084 if (f->tsec == tsec && f->toff == toff)
7090 unsigned long stub_rtype;
7092 val = trampoff - roff;
7093 if (val >= max_branch_offset)
7094 /* Oh dear, we can't reach a trampoline. Don't try to add
7095 one. We'll report an error later. */
7098 if (link_info->shared)
7100 size = 4 * ARRAY_SIZE (shared_stub_entry);
7105 size = 4 * ARRAY_SIZE (stub_entry);
7108 stub_rtype = R_PPC_RELAX;
7109 if (tsec == htab->plt
7110 || tsec == htab->glink)
7112 stub_rtype = R_PPC_RELAX_PLT;
7113 if (r_type == R_PPC_PLTREL24)
7114 stub_rtype = R_PPC_RELAX_PLTREL24;
7117 /* Hijack the old relocation. Since we need two
7118 relocations for this use a "composite" reloc. */
7119 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7121 irel->r_offset = trampoff + insn_offset;
7122 if (r_type == R_PPC_PLTREL24
7123 && stub_rtype != R_PPC_RELAX_PLTREL24)
7126 /* Record the fixup so we don't do it again this section. */
7127 f = bfd_malloc (sizeof (*f));
7131 f->trampoff = trampoff;
7139 val = f->trampoff - roff;
7140 if (val >= max_branch_offset)
7143 /* Nop out the reloc, since we're finalizing things here. */
7144 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7147 /* Get the section contents. */
7148 if (contents == NULL)
7150 /* Get cached copy if it exists. */
7151 if (elf_section_data (isec)->this_hdr.contents != NULL)
7152 contents = elf_section_data (isec)->this_hdr.contents;
7153 /* Go get them off disk. */
7154 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7158 /* Fix up the existing branch to hit the trampoline. */
7159 hit_addr = contents + roff;
7163 case R_PPC_LOCAL24PC:
7164 case R_PPC_PLTREL24:
7165 t0 = bfd_get_32 (abfd, hit_addr);
7167 t0 |= val & 0x3fffffc;
7168 bfd_put_32 (abfd, t0, hit_addr);
7172 case R_PPC_REL14_BRTAKEN:
7173 case R_PPC_REL14_BRNTAKEN:
7174 t0 = bfd_get_32 (abfd, hit_addr);
7177 bfd_put_32 (abfd, t0, hit_addr);
7182 while (fixups != NULL)
7184 struct one_fixup *f = fixups;
7185 fixups = fixups->next;
7190 workaround_change = FALSE;
7192 if (htab->params->ppc476_workaround
7193 && (!link_info->relocatable
7194 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7196 bfd_vma addr, end_addr;
7197 unsigned int crossings;
7198 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7200 addr = isec->output_section->vma + isec->output_offset;
7201 end_addr = addr + trampoff;
7203 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7206 /* Keep space aligned, to ensure the patch code itself does
7207 not cross a page. Don't decrease size calculated on a
7208 previous pass as otherwise we might never settle on a layout. */
7209 newsize = 15 - ((end_addr - 1) & 15);
7210 newsize += crossings * 16;
7211 if (relax_info->workaround_size < newsize)
7213 relax_info->workaround_size = newsize;
7214 workaround_change = TRUE;
7216 /* Ensure relocate_section is called. */
7217 isec->flags |= SEC_RELOC;
7219 newsize = trampoff + relax_info->workaround_size;
7222 if (changes || workaround_change)
7223 isec->size = newsize;
7226 && symtab_hdr->contents != (unsigned char *) isymbuf)
7228 if (! link_info->keep_memory)
7232 /* Cache the symbols for elf_link_input_bfd. */
7233 symtab_hdr->contents = (unsigned char *) isymbuf;
7237 if (contents != NULL
7238 && elf_section_data (isec)->this_hdr.contents != contents)
7240 if (!changes && !link_info->keep_memory)
7244 /* Cache the section contents for elf_link_input_bfd. */
7245 elf_section_data (isec)->this_hdr.contents = contents;
7251 /* Append sufficient NOP relocs so we can write out relocation
7252 information for the trampolines. */
7253 Elf_Internal_Shdr *rel_hdr;
7254 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7255 * sizeof (*new_relocs));
7260 memcpy (new_relocs, internal_relocs,
7261 isec->reloc_count * sizeof (*new_relocs));
7262 for (ix = changes; ix--;)
7264 irel = new_relocs + ix + isec->reloc_count;
7266 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7268 if (internal_relocs != elf_section_data (isec)->relocs)
7269 free (internal_relocs);
7270 elf_section_data (isec)->relocs = new_relocs;
7271 isec->reloc_count += changes;
7272 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7273 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7275 else if (internal_relocs != NULL
7276 && elf_section_data (isec)->relocs != internal_relocs)
7277 free (internal_relocs);
7279 *again = changes != 0 || workaround_change;
7283 while (fixups != NULL)
7285 struct one_fixup *f = fixups;
7286 fixups = fixups->next;
7289 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7291 if (contents != NULL
7292 && elf_section_data (isec)->this_hdr.contents != contents)
7294 if (internal_relocs != NULL
7295 && elf_section_data (isec)->relocs != internal_relocs)
7296 free (internal_relocs);
7300 /* What to do when ld finds relocations against symbols defined in
7301 discarded sections. */
7304 ppc_elf_action_discarded (asection *sec)
7306 if (strcmp (".fixup", sec->name) == 0)
7309 if (strcmp (".got2", sec->name) == 0)
7312 return _bfd_elf_default_action_discarded (sec);
7315 /* Fill in the address for a pointer generated in a linker section. */
7318 elf_finish_pointer_linker_section (bfd *input_bfd,
7319 elf_linker_section_t *lsect,
7320 struct elf_link_hash_entry *h,
7322 const Elf_Internal_Rela *rel)
7324 elf_linker_section_pointers_t *linker_section_ptr;
7326 BFD_ASSERT (lsect != NULL);
7330 /* Handle global symbol. */
7331 struct ppc_elf_link_hash_entry *eh;
7333 eh = (struct ppc_elf_link_hash_entry *) h;
7334 BFD_ASSERT (eh->elf.def_regular);
7335 linker_section_ptr = eh->linker_section_pointer;
7339 /* Handle local symbol. */
7340 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7342 BFD_ASSERT (is_ppc_elf (input_bfd));
7343 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7344 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7347 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7350 BFD_ASSERT (linker_section_ptr != NULL);
7352 /* Offset will always be a multiple of four, so use the bottom bit
7353 as a "written" flag. */
7354 if ((linker_section_ptr->offset & 1) == 0)
7356 bfd_put_32 (lsect->section->owner,
7357 relocation + linker_section_ptr->addend,
7358 lsect->section->contents + linker_section_ptr->offset);
7359 linker_section_ptr->offset += 1;
7362 relocation = (lsect->section->output_section->vma
7363 + lsect->section->output_offset
7364 + linker_section_ptr->offset - 1
7365 - SYM_VAL (lsect->sym));
7369 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7370 lsect->name, (long) relocation, (long) relocation);
7376 #define PPC_LO(v) ((v) & 0xffff)
7377 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7378 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7381 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7382 struct bfd_link_info *info)
7384 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7385 bfd *output_bfd = info->output_bfd;
7388 plt = ((ent->plt.offset & ~1)
7389 + plt_sec->output_section->vma
7390 + plt_sec->output_offset);
7396 if (ent->addend >= 32768)
7398 + ent->sec->output_section->vma
7399 + ent->sec->output_offset);
7400 else if (htab->elf.hgot != NULL)
7401 got = SYM_VAL (htab->elf.hgot);
7405 if (plt + 0x8000 < 0x10000)
7407 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7409 bfd_put_32 (output_bfd, MTCTR_11, p);
7411 bfd_put_32 (output_bfd, BCTR, p);
7413 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7418 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7420 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7422 bfd_put_32 (output_bfd, MTCTR_11, p);
7424 bfd_put_32 (output_bfd, BCTR, p);
7430 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7432 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7434 bfd_put_32 (output_bfd, MTCTR_11, p);
7436 bfd_put_32 (output_bfd, BCTR, p);
7441 /* Return true if symbol is defined statically. */
7444 is_static_defined (struct elf_link_hash_entry *h)
7446 return ((h->root.type == bfd_link_hash_defined
7447 || h->root.type == bfd_link_hash_defweak)
7448 && h->root.u.def.section != NULL
7449 && h->root.u.def.section->output_section != NULL);
7452 /* If INSN is an opcode that may be used with an @tls operand, return
7453 the transformed insn for TLS optimisation, otherwise return 0. If
7454 REG is non-zero only match an insn with RB or RA equal to REG. */
7457 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7461 if ((insn & (0x3f << 26)) != 31 << 26)
7464 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7465 rtra = insn & ((1 << 26) - (1 << 16));
7466 else if (((insn >> 16) & 0x1f) == reg)
7467 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7471 if ((insn & (0x3ff << 1)) == 266 << 1)
7474 else if ((insn & (0x1f << 1)) == 23 << 1
7475 && ((insn & (0x1f << 6)) < 14 << 6
7476 || ((insn & (0x1f << 6)) >= 16 << 6
7477 && (insn & (0x1f << 6)) < 24 << 6)))
7478 /* load and store indexed -> dform. */
7479 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7480 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7481 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7482 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7483 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7485 insn = (58 << 26) | 2;
7492 /* If INSN is an opcode that may be used with an @tprel operand, return
7493 the transformed insn for an undefined weak symbol, ie. with the
7494 thread pointer REG operand removed. Otherwise return 0. */
7497 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7499 if ((insn & (0x1f << 16)) == reg << 16
7500 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7501 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7502 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7503 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7504 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7505 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7506 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7507 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7508 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7509 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7510 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7511 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7512 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7513 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7514 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7515 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7517 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7518 && ((insn & 3) == 0 || (insn & 3) == 3))))
7520 insn &= ~(0x1f << 16);
7522 else if ((insn & (0x1f << 21)) == reg << 21
7523 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7524 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7525 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7527 insn &= ~(0x1f << 21);
7528 insn |= (insn & (0x1f << 16)) << 5;
7529 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7530 insn -= 2 >> 26; /* convert to ori,oris */
7538 is_insn_ds_form (unsigned int insn)
7540 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7541 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7542 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7543 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7547 is_insn_dq_form (unsigned int insn)
7549 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7552 /* The RELOCATE_SECTION function is called by the ELF backend linker
7553 to handle the relocations for a section.
7555 The relocs are always passed as Rela structures; if the section
7556 actually uses Rel structures, the r_addend field will always be
7559 This function is responsible for adjust the section contents as
7560 necessary, and (if using Rela relocs and generating a
7561 relocatable output file) adjusting the reloc addend as
7564 This function does not have to worry about setting the reloc
7565 address or the reloc symbol index.
7567 LOCAL_SYMS is a pointer to the swapped in local symbols.
7569 LOCAL_SECTIONS is an array giving the section in the input file
7570 corresponding to the st_shndx field of each local symbol.
7572 The global hash table entry for the global symbols can be found
7573 via elf_sym_hashes (input_bfd).
7575 When generating relocatable output, this function must handle
7576 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7577 going to be the section symbol corresponding to the output
7578 section, which means that the addend must be adjusted
7582 ppc_elf_relocate_section (bfd *output_bfd,
7583 struct bfd_link_info *info,
7585 asection *input_section,
7587 Elf_Internal_Rela *relocs,
7588 Elf_Internal_Sym *local_syms,
7589 asection **local_sections)
7591 Elf_Internal_Shdr *symtab_hdr;
7592 struct elf_link_hash_entry **sym_hashes;
7593 struct ppc_elf_link_hash_table *htab;
7594 Elf_Internal_Rela *rel;
7595 Elf_Internal_Rela *relend;
7596 Elf_Internal_Rela outrel;
7598 bfd_vma *local_got_offsets;
7599 bfd_boolean ret = TRUE;
7600 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7601 bfd_boolean is_vxworks_tls;
7604 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7605 "%ld relocations%s",
7606 input_bfd, input_section,
7607 (long) input_section->reloc_count,
7608 (info->relocatable) ? " (relocatable)" : "");
7611 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7613 /* Initialize howto table if not already done. */
7614 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7615 ppc_elf_howto_init ();
7617 htab = ppc_elf_hash_table (info);
7618 local_got_offsets = elf_local_got_offsets (input_bfd);
7619 symtab_hdr = &elf_symtab_hdr (input_bfd);
7620 sym_hashes = elf_sym_hashes (input_bfd);
7621 /* We have to handle relocations in vxworks .tls_vars sections
7622 specially, because the dynamic loader is 'weird'. */
7623 is_vxworks_tls = (htab->is_vxworks && info->shared
7624 && !strcmp (input_section->output_section->name,
7627 relend = relocs + input_section->reloc_count;
7628 for (; rel < relend; rel++)
7630 enum elf_ppc_reloc_type r_type;
7632 bfd_reloc_status_type r;
7633 Elf_Internal_Sym *sym;
7635 struct elf_link_hash_entry *h;
7636 const char *sym_name;
7637 reloc_howto_type *howto;
7638 unsigned long r_symndx;
7640 bfd_vma branch_bit, from;
7641 bfd_boolean unresolved_reloc;
7643 unsigned int tls_type, tls_mask, tls_gd;
7644 struct plt_entry **ifunc;
7645 struct reloc_howto_struct alt_howto;
7647 r_type = ELF32_R_TYPE (rel->r_info);
7651 unresolved_reloc = FALSE;
7653 r_symndx = ELF32_R_SYM (rel->r_info);
7655 if (r_symndx < symtab_hdr->sh_info)
7657 sym = local_syms + r_symndx;
7658 sec = local_sections[r_symndx];
7659 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7661 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7665 bfd_boolean ignored;
7667 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7668 r_symndx, symtab_hdr, sym_hashes,
7670 unresolved_reloc, warned, ignored);
7672 sym_name = h->root.root.string;
7675 if (sec != NULL && discarded_section (sec))
7677 /* For relocs against symbols from removed linkonce sections,
7678 or sections discarded by a linker script, we just want the
7679 section contents zeroed. Avoid any special processing. */
7681 if (r_type < R_PPC_max)
7682 howto = ppc_elf_howto_table[r_type];
7683 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7684 rel, 1, relend, howto, 0, contents);
7687 if (info->relocatable)
7690 && r_type == R_PPC_PLTREL24
7691 && rel->r_addend != 0)
7693 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7694 addend specifies the GOT pointer offset within .got2. */
7695 rel->r_addend += got2->output_offset;
7697 if (r_type != R_PPC_RELAX_PLT
7698 && r_type != R_PPC_RELAX_PLTREL24
7699 && r_type != R_PPC_RELAX)
7703 /* TLS optimizations. Replace instruction sequences and relocs
7704 based on information we collected in tls_optimize. We edit
7705 RELOCS so that --emit-relocs will output something sensible
7706 for the final instruction stream. */
7710 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7711 else if (local_got_offsets != NULL)
7713 struct plt_entry **local_plt;
7716 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7717 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7718 tls_mask = lgot_masks[r_symndx];
7721 /* Ensure reloc mapping code below stays sane. */
7722 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7723 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7724 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7725 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7726 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7727 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7728 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7729 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7736 case R_PPC_GOT_TPREL16:
7737 case R_PPC_GOT_TPREL16_LO:
7738 if ((tls_mask & TLS_TLS) != 0
7739 && (tls_mask & TLS_TPREL) == 0)
7743 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7745 insn |= 0x3c020000; /* addis 0,2,0 */
7746 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7747 r_type = R_PPC_TPREL16_HA;
7748 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7753 if ((tls_mask & TLS_TLS) != 0
7754 && (tls_mask & TLS_TPREL) == 0)
7758 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7759 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7762 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7763 r_type = R_PPC_TPREL16_LO;
7764 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7766 /* Was PPC_TLS which sits on insn boundary, now
7767 PPC_TPREL16_LO which is at low-order half-word. */
7768 rel->r_offset += d_offset;
7772 case R_PPC_GOT_TLSGD16_HI:
7773 case R_PPC_GOT_TLSGD16_HA:
7774 tls_gd = TLS_TPRELGD;
7775 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7779 case R_PPC_GOT_TLSLD16_HI:
7780 case R_PPC_GOT_TLSLD16_HA:
7781 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7784 if ((tls_mask & tls_gd) != 0)
7785 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7786 + R_PPC_GOT_TPREL16);
7789 rel->r_offset -= d_offset;
7790 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7791 r_type = R_PPC_NONE;
7793 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7797 case R_PPC_GOT_TLSGD16:
7798 case R_PPC_GOT_TLSGD16_LO:
7799 tls_gd = TLS_TPRELGD;
7800 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7804 case R_PPC_GOT_TLSLD16:
7805 case R_PPC_GOT_TLSLD16_LO:
7806 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7808 unsigned int insn1, insn2;
7812 offset = (bfd_vma) -1;
7813 /* If not using the newer R_PPC_TLSGD/LD to mark
7814 __tls_get_addr calls, we must trust that the call
7815 stays with its arg setup insns, ie. that the next
7816 reloc is the __tls_get_addr call associated with
7817 the current reloc. Edit both insns. */
7818 if (input_section->has_tls_get_addr_call
7820 && branch_reloc_hash_match (input_bfd, rel + 1,
7821 htab->tls_get_addr))
7822 offset = rel[1].r_offset;
7823 /* We read the low GOT_TLS insn because we need to keep
7824 the destination reg. It may be something other than
7825 the usual r3, and moved to r3 before the call by
7826 intervening code. */
7827 insn1 = bfd_get_32 (output_bfd,
7828 contents + rel->r_offset - d_offset);
7829 if ((tls_mask & tls_gd) != 0)
7832 insn1 &= (0x1f << 21) | (0x1f << 16);
7833 insn1 |= 32 << 26; /* lwz */
7834 if (offset != (bfd_vma) -1)
7836 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7837 insn2 = 0x7c631214; /* add 3,3,2 */
7838 bfd_put_32 (output_bfd, insn2, contents + offset);
7840 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7841 + R_PPC_GOT_TPREL16);
7842 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7847 insn1 &= 0x1f << 21;
7848 insn1 |= 0x3c020000; /* addis r,2,0 */
7851 /* Was an LD reloc. */
7853 r_symndx < symtab_hdr->sh_info;
7855 if (local_sections[r_symndx] == sec)
7857 if (r_symndx >= symtab_hdr->sh_info)
7858 r_symndx = STN_UNDEF;
7859 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7860 if (r_symndx != STN_UNDEF)
7861 rel->r_addend -= (local_syms[r_symndx].st_value
7862 + sec->output_offset
7863 + sec->output_section->vma);
7865 r_type = R_PPC_TPREL16_HA;
7866 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7867 if (offset != (bfd_vma) -1)
7869 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7870 rel[1].r_offset = offset + d_offset;
7871 rel[1].r_addend = rel->r_addend;
7872 insn2 = 0x38630000; /* addi 3,3,0 */
7873 bfd_put_32 (output_bfd, insn2, contents + offset);
7876 bfd_put_32 (output_bfd, insn1,
7877 contents + rel->r_offset - d_offset);
7880 /* We changed the symbol on an LD reloc. Start over
7881 in order to get h, sym, sec etc. right. */
7889 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7892 bfd_vma offset = rel->r_offset;
7894 if ((tls_mask & TLS_TPRELGD) != 0)
7897 r_type = R_PPC_NONE;
7898 insn2 = 0x7c631214; /* add 3,3,2 */
7903 r_type = R_PPC_TPREL16_LO;
7904 rel->r_offset += d_offset;
7905 insn2 = 0x38630000; /* addi 3,3,0 */
7907 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7908 bfd_put_32 (output_bfd, insn2, contents + offset);
7909 /* Zap the reloc on the _tls_get_addr call too. */
7910 BFD_ASSERT (offset == rel[1].r_offset);
7911 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7916 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7921 r_symndx < symtab_hdr->sh_info;
7923 if (local_sections[r_symndx] == sec)
7925 if (r_symndx >= symtab_hdr->sh_info)
7926 r_symndx = STN_UNDEF;
7927 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7928 if (r_symndx != STN_UNDEF)
7929 rel->r_addend -= (local_syms[r_symndx].st_value
7930 + sec->output_offset
7931 + sec->output_section->vma);
7933 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7934 rel->r_offset += d_offset;
7935 insn2 = 0x38630000; /* addi 3,3,0 */
7936 bfd_put_32 (output_bfd, insn2,
7937 contents + rel->r_offset - d_offset);
7938 /* Zap the reloc on the _tls_get_addr call too. */
7939 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7940 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7947 /* Handle other relocations that tweak non-addend part of insn. */
7954 /* Branch taken prediction relocations. */
7955 case R_PPC_ADDR14_BRTAKEN:
7956 case R_PPC_REL14_BRTAKEN:
7957 branch_bit = BRANCH_PREDICT_BIT;
7960 /* Branch not taken prediction relocations. */
7961 case R_PPC_ADDR14_BRNTAKEN:
7962 case R_PPC_REL14_BRNTAKEN:
7966 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7967 insn &= ~BRANCH_PREDICT_BIT;
7970 from = (rel->r_offset
7971 + input_section->output_offset
7972 + input_section->output_section->vma);
7974 /* Invert 'y' bit if not the default. */
7975 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7976 insn ^= BRANCH_PREDICT_BIT;
7978 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7984 if (!htab->is_vxworks)
7986 struct plt_entry *ent;
7990 if (h->type == STT_GNU_IFUNC)
7991 ifunc = &h->plt.plist;
7993 else if (local_got_offsets != NULL
7994 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7996 struct plt_entry **local_plt;
7998 local_plt = (struct plt_entry **) (local_got_offsets
7999 + symtab_hdr->sh_info);
8000 ifunc = local_plt + r_symndx;
8006 || is_branch_reloc (r_type)))
8009 if (r_type == R_PPC_PLTREL24 && info->shared)
8010 addend = rel->r_addend;
8011 ent = find_plt_ent (ifunc, got2, addend);
8015 if (h == NULL && (ent->plt.offset & 1) == 0)
8017 Elf_Internal_Rela rela;
8020 rela.r_offset = (htab->iplt->output_section->vma
8021 + htab->iplt->output_offset
8023 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8024 rela.r_addend = relocation;
8025 loc = htab->reliplt->contents;
8026 loc += (htab->reliplt->reloc_count++
8027 * sizeof (Elf32_External_Rela));
8028 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8030 ent->plt.offset |= 1;
8032 if (h == NULL && (ent->glink_offset & 1) == 0)
8034 unsigned char *p = ((unsigned char *) htab->glink->contents
8035 + ent->glink_offset);
8036 write_glink_stub (ent, htab->iplt, p, info);
8037 ent->glink_offset |= 1;
8040 unresolved_reloc = FALSE;
8041 if (htab->plt_type == PLT_NEW
8042 || !htab->elf.dynamic_sections_created
8044 || h->dynindx == -1)
8045 relocation = (htab->glink->output_section->vma
8046 + htab->glink->output_offset
8047 + (ent->glink_offset & ~1));
8049 relocation = (htab->plt->output_section->vma
8050 + htab->plt->output_offset
8055 addend = rel->r_addend;
8058 if (r_type < R_PPC_max)
8059 howto = ppc_elf_howto_table[r_type];
8063 info->callbacks->einfo
8064 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8065 input_bfd, (int) r_type, sym_name);
8067 bfd_set_error (bfd_error_bad_value);
8075 case R_PPC_EMB_MRKREF:
8076 case R_PPC_GNU_VTINHERIT:
8077 case R_PPC_GNU_VTENTRY:
8080 /* GOT16 relocations. Like an ADDR16 using the symbol's
8081 address in the GOT as relocation value instead of the
8082 symbol's value itself. Also, create a GOT entry for the
8083 symbol and put the symbol value there. */
8084 case R_PPC_GOT_TLSGD16:
8085 case R_PPC_GOT_TLSGD16_LO:
8086 case R_PPC_GOT_TLSGD16_HI:
8087 case R_PPC_GOT_TLSGD16_HA:
8088 tls_type = TLS_TLS | TLS_GD;
8091 case R_PPC_GOT_TLSLD16:
8092 case R_PPC_GOT_TLSLD16_LO:
8093 case R_PPC_GOT_TLSLD16_HI:
8094 case R_PPC_GOT_TLSLD16_HA:
8095 tls_type = TLS_TLS | TLS_LD;
8098 case R_PPC_GOT_TPREL16:
8099 case R_PPC_GOT_TPREL16_LO:
8100 case R_PPC_GOT_TPREL16_HI:
8101 case R_PPC_GOT_TPREL16_HA:
8102 tls_type = TLS_TLS | TLS_TPREL;
8105 case R_PPC_GOT_DTPREL16:
8106 case R_PPC_GOT_DTPREL16_LO:
8107 case R_PPC_GOT_DTPREL16_HI:
8108 case R_PPC_GOT_DTPREL16_HA:
8109 tls_type = TLS_TLS | TLS_DTPREL;
8113 case R_PPC_GOT16_LO:
8114 case R_PPC_GOT16_HI:
8115 case R_PPC_GOT16_HA:
8119 /* Relocation is to the entry for this symbol in the global
8125 if (htab->got == NULL)
8129 if (tls_type == (TLS_TLS | TLS_LD)
8131 || !h->def_dynamic))
8132 offp = &htab->tlsld_got.offset;
8136 dyn = htab->elf.dynamic_sections_created;
8137 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8139 && SYMBOL_REFERENCES_LOCAL (info, h)))
8140 /* This is actually a static link, or it is a
8141 -Bsymbolic link and the symbol is defined
8142 locally, or the symbol was forced to be local
8143 because of a version file. */
8147 BFD_ASSERT (h->dynindx != -1);
8149 unresolved_reloc = FALSE;
8151 offp = &h->got.offset;
8155 if (local_got_offsets == NULL)
8157 offp = &local_got_offsets[r_symndx];
8160 /* The offset must always be a multiple of 4. We use the
8161 least significant bit to record whether we have already
8162 processed this entry. */
8168 unsigned int tls_m = (tls_mask
8169 & (TLS_LD | TLS_GD | TLS_DTPREL
8170 | TLS_TPREL | TLS_TPRELGD));
8172 if (offp == &htab->tlsld_got.offset)
8178 /* We might have multiple got entries for this sym.
8179 Initialize them all. */
8184 if ((tls_m & TLS_LD) != 0)
8186 tls_ty = TLS_TLS | TLS_LD;
8189 else if ((tls_m & TLS_GD) != 0)
8191 tls_ty = TLS_TLS | TLS_GD;
8194 else if ((tls_m & TLS_DTPREL) != 0)
8196 tls_ty = TLS_TLS | TLS_DTPREL;
8197 tls_m &= ~TLS_DTPREL;
8199 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8201 tls_ty = TLS_TLS | TLS_TPREL;
8205 /* Generate relocs for the dynamic linker. */
8206 if ((info->shared || indx != 0)
8207 && (offp == &htab->tlsld_got.offset
8209 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8210 || h->root.type != bfd_link_hash_undefweak))
8212 asection *rsec = htab->relgot;
8216 rsec = htab->reliplt;
8217 outrel.r_offset = (htab->got->output_section->vma
8218 + htab->got->output_offset
8220 outrel.r_addend = 0;
8221 if (tls_ty & (TLS_LD | TLS_GD))
8223 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8224 if (tls_ty == (TLS_TLS | TLS_GD))
8226 loc = rsec->contents;
8227 loc += (rsec->reloc_count++
8228 * sizeof (Elf32_External_Rela));
8229 bfd_elf32_swap_reloca_out (output_bfd,
8231 outrel.r_offset += 4;
8233 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8236 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8237 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8238 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8239 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8241 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8242 else if (ifunc != NULL)
8243 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8245 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8246 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8248 outrel.r_addend += relocation;
8249 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8251 if (htab->elf.tls_sec == NULL)
8252 outrel.r_addend = 0;
8254 outrel.r_addend -= htab->elf.tls_sec->vma;
8257 loc = rsec->contents;
8258 loc += (rsec->reloc_count++
8259 * sizeof (Elf32_External_Rela));
8260 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8263 /* Init the .got section contents if we're not
8264 emitting a reloc. */
8267 bfd_vma value = relocation;
8269 if (tls_ty == (TLS_TLS | TLS_LD))
8271 else if (tls_ty != 0)
8273 if (htab->elf.tls_sec == NULL)
8277 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8278 if (tls_ty == (TLS_TLS | TLS_TPREL))
8279 value += DTP_OFFSET - TP_OFFSET;
8282 if (tls_ty == (TLS_TLS | TLS_GD))
8284 bfd_put_32 (output_bfd, value,
8285 htab->got->contents + off + 4);
8289 bfd_put_32 (output_bfd, value,
8290 htab->got->contents + off);
8294 if (tls_ty & (TLS_LD | TLS_GD))
8303 if (off >= (bfd_vma) -2)
8306 if ((tls_type & TLS_TLS) != 0)
8308 if (tls_type != (TLS_TLS | TLS_LD))
8310 if ((tls_mask & TLS_LD) != 0
8312 || !h->def_dynamic))
8314 if (tls_type != (TLS_TLS | TLS_GD))
8316 if ((tls_mask & TLS_GD) != 0)
8318 if (tls_type != (TLS_TLS | TLS_DTPREL))
8320 if ((tls_mask & TLS_DTPREL) != 0)
8327 relocation = (htab->got->output_section->vma
8328 + htab->got->output_offset
8330 - SYM_VAL (htab->elf.hgot));
8332 /* Addends on got relocations don't make much sense.
8333 x+off@got is actually x@got+off, and since the got is
8334 generated by a hash table traversal, the value in the
8335 got at entry m+n bears little relation to the entry m. */
8337 info->callbacks->einfo
8338 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8339 input_bfd, input_section, rel->r_offset,
8345 /* Relocations that need no special processing. */
8346 case R_PPC_LOCAL24PC:
8347 /* It makes no sense to point a local relocation
8348 at a symbol not in this object. */
8349 if (unresolved_reloc)
8351 if (! (*info->callbacks->undefined_symbol) (info,
8352 h->root.root.string,
8362 case R_PPC_DTPREL16:
8363 case R_PPC_DTPREL16_LO:
8364 case R_PPC_DTPREL16_HI:
8365 case R_PPC_DTPREL16_HA:
8366 if (htab->elf.tls_sec != NULL)
8367 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8370 /* Relocations that may need to be propagated if this is a shared
8373 case R_PPC_TPREL16_LO:
8374 case R_PPC_TPREL16_HI:
8375 case R_PPC_TPREL16_HA:
8377 && h->root.type == bfd_link_hash_undefweak
8378 && h->dynindx == -1)
8380 /* Make this relocation against an undefined weak symbol
8381 resolve to zero. This is really just a tweak, since
8382 code using weak externs ought to check that they are
8383 defined before using them. */
8384 bfd_byte *p = contents + rel->r_offset - d_offset;
8385 unsigned int insn = bfd_get_32 (output_bfd, p);
8386 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8388 bfd_put_32 (output_bfd, insn, p);
8391 if (htab->elf.tls_sec != NULL)
8392 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8393 /* The TPREL16 relocs shouldn't really be used in shared
8394 libs as they will result in DT_TEXTREL being set, but
8395 support them anyway. */
8399 if (htab->elf.tls_sec != NULL)
8400 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8403 case R_PPC_DTPREL32:
8404 if (htab->elf.tls_sec != NULL)
8405 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8408 case R_PPC_DTPMOD32:
8414 case R_PPC_REL16_LO:
8415 case R_PPC_REL16_HI:
8416 case R_PPC_REL16_HA:
8420 if (h == NULL || h == htab->elf.hgot)
8426 case R_PPC_ADDR16_LO:
8427 case R_PPC_ADDR16_HI:
8428 case R_PPC_ADDR16_HA:
8433 case R_PPC_VLE_REL8:
8434 case R_PPC_VLE_REL15:
8435 case R_PPC_VLE_REL24:
8438 case R_PPC_REL14_BRTAKEN:
8439 case R_PPC_REL14_BRNTAKEN:
8440 /* If these relocations are not to a named symbol, they can be
8441 handled right here, no need to bother the dynamic linker. */
8442 if (SYMBOL_CALLS_LOCAL (info, h)
8443 || h == htab->elf.hgot)
8449 case R_PPC_ADDR14_BRTAKEN:
8450 case R_PPC_ADDR14_BRNTAKEN:
8451 if (h != NULL && !info->shared)
8456 if ((input_section->flags & SEC_ALLOC) == 0
8462 && ((h->root.type == bfd_link_hash_undefined
8463 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8464 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8465 || (h->root.type == bfd_link_hash_undefweak
8466 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8467 && (must_be_dyn_reloc (info, r_type)
8468 || !SYMBOL_CALLS_LOCAL (info, h)))
8469 || (ELIMINATE_COPY_RELOCS
8474 && !h->def_regular))
8480 fprintf (stderr, "ppc_elf_relocate_section needs to "
8481 "create relocation for %s\n",
8482 (h && h->root.root.string
8483 ? h->root.root.string : "<unknown>"));
8486 /* When generating a shared object, these relocations
8487 are copied into the output file to be resolved at run
8489 sreloc = elf_section_data (input_section)->sreloc;
8491 sreloc = htab->reliplt;
8496 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8499 if (outrel.r_offset == (bfd_vma) -1
8500 || outrel.r_offset == (bfd_vma) -2)
8501 skip = (int) outrel.r_offset;
8502 outrel.r_offset += (input_section->output_section->vma
8503 + input_section->output_offset);
8506 memset (&outrel, 0, sizeof outrel);
8508 && (h->root.type == bfd_link_hash_undefined
8509 || h->root.type == bfd_link_hash_undefweak))
8510 || !SYMBOL_REFERENCES_LOCAL (info, h))
8512 BFD_ASSERT (h->dynindx != -1);
8513 unresolved_reloc = FALSE;
8514 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8515 outrel.r_addend = rel->r_addend;
8519 outrel.r_addend = relocation + rel->r_addend;
8521 if (r_type != R_PPC_ADDR32)
8527 /* If we get here when building a static
8528 executable, then the libc startup function
8529 responsible for applying indirect function
8530 relocations is going to complain about
8532 If we get here when building a dynamic
8533 executable, it will be because we have
8534 a text relocation. The dynamic loader
8535 will set the text segment writable and
8536 non-executable to apply text relocations.
8537 So we'll segfault when trying to run the
8538 indirection function to resolve the reloc. */
8539 info->callbacks->einfo
8540 (_("%P: %H: relocation %s for indirect "
8541 "function %s unsupported\n"),
8542 input_bfd, input_section, rel->r_offset,
8547 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8549 else if (sec == NULL || sec->owner == NULL)
8551 bfd_set_error (bfd_error_bad_value);
8558 /* We are turning this relocation into one
8559 against a section symbol. It would be
8560 proper to subtract the symbol's value,
8561 osec->vma, from the emitted reloc addend,
8562 but ld.so expects buggy relocs.
8563 FIXME: Why not always use a zero index? */
8564 osec = sec->output_section;
8565 indx = elf_section_data (osec)->dynindx;
8568 osec = htab->elf.text_index_section;
8569 indx = elf_section_data (osec)->dynindx;
8571 BFD_ASSERT (indx != 0);
8574 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8575 indx, osec->name, osec->flags,
8576 h->root.root.string);
8580 outrel.r_info = ELF32_R_INFO (indx, r_type);
8582 else if (ifunc != NULL)
8583 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8585 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8588 loc = sreloc->contents;
8589 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8590 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8595 /* This reloc will be computed at runtime. We clear the memory
8596 so that it contains predictable value. */
8598 && ((input_section->flags & SEC_ALLOC) != 0
8599 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8601 relocation = howto->pc_relative ? outrel.r_offset : 0;
8608 case R_PPC_RELAX_PLT:
8609 case R_PPC_RELAX_PLTREL24:
8612 struct plt_entry *ent;
8613 bfd_vma got2_addend = 0;
8615 if (r_type == R_PPC_RELAX_PLTREL24)
8618 got2_addend = addend;
8621 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8622 if (htab->plt_type == PLT_NEW)
8623 relocation = (htab->glink->output_section->vma
8624 + htab->glink->output_offset
8625 + ent->glink_offset);
8627 relocation = (htab->plt->output_section->vma
8628 + htab->plt->output_offset
8637 size_t insn_offset = rel->r_offset;
8642 relocation -= (input_section->output_section->vma
8643 + input_section->output_offset
8644 + rel->r_offset - 4);
8645 stub = shared_stub_entry;
8646 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8647 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8648 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8650 size = ARRAY_SIZE (shared_stub_entry) - 3;
8655 size = ARRAY_SIZE (stub_entry);
8658 relocation += addend;
8659 if (info->relocatable)
8662 /* First insn is HA, second is LO. */
8664 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8665 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8669 insn |= relocation & 0xffff;
8670 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8678 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8682 /* Rewrite the reloc and convert one of the trailing nop
8683 relocs to describe this relocation. */
8684 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8685 /* The relocs are at the bottom 2 bytes */
8686 rel[0].r_offset += d_offset;
8687 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8688 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8689 rel[1].r_offset += 4;
8690 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8695 /* Indirect .sdata relocation. */
8696 case R_PPC_EMB_SDAI16:
8697 BFD_ASSERT (htab->sdata[0].section != NULL);
8698 if (!is_static_defined (htab->sdata[0].sym))
8700 unresolved_reloc = TRUE;
8704 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8705 h, relocation, rel);
8709 /* Indirect .sdata2 relocation. */
8710 case R_PPC_EMB_SDA2I16:
8711 BFD_ASSERT (htab->sdata[1].section != NULL);
8712 if (!is_static_defined (htab->sdata[1].sym))
8714 unresolved_reloc = TRUE;
8718 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8719 h, relocation, rel);
8723 /* Handle the TOC16 reloc. We want to use the offset within the .got
8724 section, not the actual VMA. This is appropriate when generating
8725 an embedded ELF object, for which the .got section acts like the
8726 AIX .toc section. */
8727 case R_PPC_TOC16: /* phony GOT16 relocations */
8728 if (sec == NULL || sec->output_section == NULL)
8730 unresolved_reloc = TRUE;
8733 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8735 || strcmp (bfd_get_section_name (sec->owner, sec),
8738 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8741 case R_PPC_PLTREL24:
8742 if (h != NULL && ifunc == NULL)
8744 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8745 info->shared ? addend : 0);
8747 || htab->plt == NULL)
8749 /* We didn't make a PLT entry for this symbol. This
8750 happens when statically linking PIC code, or when
8751 using -Bsymbolic. */
8755 /* Relocation is to the entry for this symbol in the
8756 procedure linkage table. */
8757 unresolved_reloc = FALSE;
8758 if (htab->plt_type == PLT_NEW)
8759 relocation = (htab->glink->output_section->vma
8760 + htab->glink->output_offset
8761 + ent->glink_offset);
8763 relocation = (htab->plt->output_section->vma
8764 + htab->plt->output_offset
8769 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8770 addend specifies the GOT pointer offset within .got2.
8771 Don't apply it to the relocation field. */
8775 /* Relocate against _SDA_BASE_. */
8776 case R_PPC_SDAREL16:
8779 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8782 || sec->output_section == NULL
8783 || !is_static_defined (sda))
8785 unresolved_reloc = TRUE;
8788 addend -= SYM_VAL (sda);
8790 name = bfd_get_section_name (output_bfd, sec->output_section);
8791 if (!(strcmp (name, ".sdata") == 0
8792 || strcmp (name, ".sbss") == 0))
8794 info->callbacks->einfo
8795 (_("%P: %B: the target (%s) of a %s relocation is "
8796 "in the wrong output section (%s)\n"),
8805 /* Relocate against _SDA2_BASE_. */
8806 case R_PPC_EMB_SDA2REL:
8809 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8812 || sec->output_section == NULL
8813 || !is_static_defined (sda))
8815 unresolved_reloc = TRUE;
8818 addend -= SYM_VAL (sda);
8820 name = bfd_get_section_name (output_bfd, sec->output_section);
8821 if (!(strcmp (name, ".sdata2") == 0
8822 || strcmp (name, ".sbss2") == 0))
8824 info->callbacks->einfo
8825 (_("%P: %B: the target (%s) of a %s relocation is "
8826 "in the wrong output section (%s)\n"),
8835 case R_PPC_VLE_LO16A:
8836 relocation = relocation + addend;
8837 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8838 relocation, split16a_type);
8841 case R_PPC_VLE_LO16D:
8842 relocation = relocation + addend;
8843 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8844 relocation, split16d_type);
8847 case R_PPC_VLE_HI16A:
8848 relocation = (relocation + addend) >> 16;
8849 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8850 relocation, split16a_type);
8853 case R_PPC_VLE_HI16D:
8854 relocation = (relocation + addend) >> 16;
8855 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8856 relocation, split16d_type);
8859 case R_PPC_VLE_HA16A:
8860 relocation = (relocation + addend + 0x8000) >> 16;
8861 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8862 relocation, split16a_type);
8865 case R_PPC_VLE_HA16D:
8866 relocation = (relocation + addend + 0x8000) >> 16;
8867 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8868 relocation, split16d_type);
8871 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8872 case R_PPC_EMB_SDA21:
8873 case R_PPC_VLE_SDA21:
8874 case R_PPC_EMB_RELSDA:
8875 case R_PPC_VLE_SDA21_LO:
8880 struct elf_link_hash_entry *sda = NULL;
8882 if (sec == NULL || sec->output_section == NULL)
8884 unresolved_reloc = TRUE;
8888 name = bfd_get_section_name (output_bfd, sec->output_section);
8889 if (strcmp (name, ".sdata") == 0
8890 || strcmp (name, ".sbss") == 0)
8893 sda = htab->sdata[0].sym;
8895 else if (strcmp (name, ".sdata2") == 0
8896 || strcmp (name, ".sbss2") == 0)
8899 sda = htab->sdata[1].sym;
8901 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8902 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8908 info->callbacks->einfo
8909 (_("%P: %B: the target (%s) of a %s relocation is "
8910 "in the wrong output section (%s)\n"),
8916 bfd_set_error (bfd_error_bad_value);
8923 if (!is_static_defined (sda))
8925 unresolved_reloc = TRUE;
8928 addend -= SYM_VAL (sda);
8931 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8933 && (r_type == R_PPC_VLE_SDA21
8934 || r_type == R_PPC_VLE_SDA21_LO))
8936 relocation = relocation + addend;
8939 /* Force e_li insn, keeping RT from original insn. */
8943 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8944 /* Top 4 bits of value to 17..20. */
8945 insn |= (relocation & 0xf0000) >> 5;
8946 /* Next 5 bits of the value to 11..15. */
8947 insn |= (relocation & 0xf800) << 5;
8948 /* And the final 11 bits of the value to bits 21 to 31. */
8949 insn |= relocation & 0x7ff;
8951 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8953 if (r_type == R_PPC_VLE_SDA21
8954 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
8958 else if (r_type == R_PPC_EMB_SDA21
8959 || r_type == R_PPC_VLE_SDA21
8960 || r_type == R_PPC_VLE_SDA21_LO)
8962 /* Fill in register field. */
8963 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8965 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8969 case R_PPC_VLE_SDAREL_LO16A:
8970 case R_PPC_VLE_SDAREL_LO16D:
8971 case R_PPC_VLE_SDAREL_HI16A:
8972 case R_PPC_VLE_SDAREL_HI16D:
8973 case R_PPC_VLE_SDAREL_HA16A:
8974 case R_PPC_VLE_SDAREL_HA16D:
8979 struct elf_link_hash_entry *sda = NULL;
8981 if (sec == NULL || sec->output_section == NULL)
8983 unresolved_reloc = TRUE;
8987 name = bfd_get_section_name (output_bfd, sec->output_section);
8988 if (strcmp (name, ".sdata") == 0
8989 || strcmp (name, ".sbss") == 0)
8992 sda = htab->sdata[0].sym;
8994 else if (strcmp (name, ".sdata2") == 0
8995 || strcmp (name, ".sbss2") == 0)
8998 sda = htab->sdata[1].sym;
9002 (*_bfd_error_handler)
9003 (_("%B: the target (%s) of a %s relocation is "
9004 "in the wrong output section (%s)"),
9010 bfd_set_error (bfd_error_bad_value);
9017 if (!is_static_defined (sda))
9019 unresolved_reloc = TRUE;
9024 value = (sda->root.u.def.section->output_section->vma
9025 + sda->root.u.def.section->output_offset
9028 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9029 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9030 value, split16a_type);
9031 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9032 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9033 value, split16d_type);
9034 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9036 value = value >> 16;
9037 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9038 value, split16a_type);
9040 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9042 value = value >> 16;
9043 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9044 value, split16d_type);
9046 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9048 value = (value + 0x8000) >> 16;
9049 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9050 value, split16a_type);
9052 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9054 value = (value + 0x8000) >> 16;
9055 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9056 value, split16d_type);
9061 /* Relocate against the beginning of the section. */
9063 case R_PPC_SECTOFF_LO:
9064 case R_PPC_SECTOFF_HI:
9065 case R_PPC_SECTOFF_HA:
9066 if (sec == NULL || sec->output_section == NULL)
9068 unresolved_reloc = TRUE;
9071 addend -= sec->output_section->vma;
9074 /* Negative relocations. */
9075 case R_PPC_EMB_NADDR32:
9076 case R_PPC_EMB_NADDR16:
9077 case R_PPC_EMB_NADDR16_LO:
9078 case R_PPC_EMB_NADDR16_HI:
9079 case R_PPC_EMB_NADDR16_HA:
9080 addend -= 2 * relocation;
9084 case R_PPC_GLOB_DAT:
9085 case R_PPC_JMP_SLOT:
9086 case R_PPC_RELATIVE:
9087 case R_PPC_IRELATIVE:
9089 case R_PPC_PLTREL32:
9090 case R_PPC_PLT16_LO:
9091 case R_PPC_PLT16_HI:
9092 case R_PPC_PLT16_HA:
9094 case R_PPC_EMB_RELSEC16:
9095 case R_PPC_EMB_RELST_LO:
9096 case R_PPC_EMB_RELST_HI:
9097 case R_PPC_EMB_RELST_HA:
9098 case R_PPC_EMB_BIT_FLD:
9099 info->callbacks->einfo
9100 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9105 bfd_set_error (bfd_error_invalid_operation);
9110 /* Do any further special processing. */
9116 case R_PPC_ADDR16_HA:
9117 case R_PPC_REL16_HA:
9118 case R_PPC_SECTOFF_HA:
9119 case R_PPC_TPREL16_HA:
9120 case R_PPC_DTPREL16_HA:
9121 case R_PPC_EMB_NADDR16_HA:
9122 case R_PPC_EMB_RELST_HA:
9123 /* It's just possible that this symbol is a weak symbol
9124 that's not actually defined anywhere. In that case,
9125 'sec' would be NULL, and we should leave the symbol
9126 alone (it will be set to zero elsewhere in the link). */
9131 case R_PPC_PLT16_HA:
9132 case R_PPC_GOT16_HA:
9133 case R_PPC_GOT_TLSGD16_HA:
9134 case R_PPC_GOT_TLSLD16_HA:
9135 case R_PPC_GOT_TPREL16_HA:
9136 case R_PPC_GOT_DTPREL16_HA:
9137 /* Add 0x10000 if sign bit in 0:15 is set.
9138 Bits 0:15 are not used. */
9143 case R_PPC_ADDR16_LO:
9145 case R_PPC_GOT16_LO:
9146 case R_PPC_SDAREL16:
9148 case R_PPC_SECTOFF_LO:
9149 case R_PPC_DTPREL16:
9150 case R_PPC_DTPREL16_LO:
9152 case R_PPC_TPREL16_LO:
9153 case R_PPC_GOT_TLSGD16:
9154 case R_PPC_GOT_TLSGD16_LO:
9155 case R_PPC_GOT_TLSLD16:
9156 case R_PPC_GOT_TLSLD16_LO:
9157 case R_PPC_GOT_DTPREL16:
9158 case R_PPC_GOT_DTPREL16_LO:
9159 case R_PPC_GOT_TPREL16:
9160 case R_PPC_GOT_TPREL16_LO:
9162 /* The 32-bit ABI lacks proper relocations to deal with
9163 certain 64-bit instructions. Prevent damage to bits
9164 that make up part of the insn opcode. */
9165 unsigned int insn, mask, lobit;
9167 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
9169 if (is_insn_ds_form (insn))
9171 else if (is_insn_dq_form (insn))
9175 lobit = mask & (relocation + addend);
9179 info->callbacks->einfo
9180 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9181 input_bfd, input_section, rel->r_offset,
9182 howto->name, sym_name, mask + 1);
9183 bfd_set_error (bfd_error_bad_value);
9186 addend += insn & mask;
9192 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9193 "offset = %ld, addend = %ld\n",
9198 (long) rel->r_offset,
9202 if (unresolved_reloc
9203 && !((input_section->flags & SEC_DEBUGGING) != 0
9205 && _bfd_elf_section_offset (output_bfd, info, input_section,
9206 rel->r_offset) != (bfd_vma) -1)
9208 info->callbacks->einfo
9209 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9210 input_bfd, input_section, rel->r_offset,
9216 /* 16-bit fields in insns mostly have signed values, but a
9217 few insns have 16-bit unsigned values. Really, we should
9218 have different reloc types. */
9219 if (howto->complain_on_overflow != complain_overflow_dont
9220 && howto->dst_mask == 0xffff
9221 && (input_section->flags & SEC_CODE) != 0)
9223 enum complain_overflow complain = complain_overflow_signed;
9225 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9229 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9230 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9231 complain = complain_overflow_bitfield;
9232 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9233 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9234 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9235 complain = complain_overflow_unsigned;
9237 if (howto->complain_on_overflow != complain)
9240 alt_howto.complain_on_overflow = complain;
9245 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9246 rel->r_offset, relocation, addend);
9248 if (r != bfd_reloc_ok)
9250 if (r == bfd_reloc_overflow)
9253 /* On code like "if (foo) foo();" don't report overflow
9254 on a branch to zero when foo is undefined. */
9257 && (h->root.type == bfd_link_hash_undefweak
9258 || h->root.type == bfd_link_hash_undefined)
9259 && is_branch_reloc (r_type)))
9261 if (!((*info->callbacks->reloc_overflow)
9262 (info, (h ? &h->root : NULL), sym_name,
9263 howto->name, rel->r_addend,
9264 input_bfd, input_section, rel->r_offset)))
9270 info->callbacks->einfo
9271 (_("%P: %H: %s reloc against `%s': error %d\n"),
9272 input_bfd, input_section, rel->r_offset,
9273 howto->name, sym_name, (int) r);
9280 fprintf (stderr, "\n");
9283 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9284 && input_section->size != input_section->rawsize
9285 && (strcmp (input_section->output_section->name, ".init") == 0
9286 || strcmp (input_section->output_section->name, ".fini") == 0))
9288 /* Branch around the trampolines. */
9289 unsigned int insn = B + input_section->size - input_section->rawsize;
9290 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9293 if (htab->params->ppc476_workaround
9294 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9295 && (!info->relocatable
9296 || (input_section->output_section->alignment_power
9297 >= htab->params->pagesize_p2)))
9299 struct ppc_elf_relax_info *relax_info;
9300 bfd_vma start_addr, end_addr, addr;
9301 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9303 relax_info = elf_section_data (input_section)->sec_info;
9304 if (relax_info->workaround_size != 0)
9310 bfd_put_32 (input_bfd, BA, fill);
9311 p = contents + input_section->size - relax_info->workaround_size;
9312 n = relax_info->workaround_size >> 2;
9315 memcpy (p, fill, 4);
9320 /* The idea is: Replace the last instruction on a page with a
9321 branch to a patch area. Put the insn there followed by a
9322 branch back to the next page. Complicated a little by
9323 needing to handle moved conditional branches, and by not
9324 wanting to touch data-in-text. */
9326 start_addr = (input_section->output_section->vma
9327 + input_section->output_offset);
9328 end_addr = (start_addr + input_section->size
9329 - relax_info->workaround_size);
9330 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9334 bfd_vma offset = addr - start_addr;
9335 Elf_Internal_Rela *lo, *hi;
9336 bfd_boolean is_data;
9337 bfd_vma patch_off, patch_addr;
9340 /* Do we have a data reloc at this offset? If so, leave
9348 rel = lo + (hi - lo) / 2;
9349 if (rel->r_offset < offset)
9351 else if (rel->r_offset > offset + 3)
9355 switch (ELF32_R_TYPE (rel->r_info))
9372 /* Some instructions can be left alone too. Unconditional
9373 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9374 avoid the icache failure.
9376 The problem occurs due to prefetch across a page boundary
9377 where stale instructions can be fetched from the next
9378 page, and the mechanism for flushing these bad
9379 instructions fails under certain circumstances. The
9380 unconditional branches:
9381 1) Branch: b, bl, ba, bla,
9382 2) Branch Conditional: bc, bca, bcl, bcla,
9383 3) Branch Conditional to Link Register: bclr, bclrl,
9384 where (2) and (3) have BO=0x14 making them unconditional,
9385 prevent the bad prefetch because the prefetch itself is
9386 affected by these instructions. This happens even if the
9387 instruction is not executed.
9392 . addi 9,9,new_page@l
9399 The bctr is not predicted taken due to ctr not being
9400 ready, so prefetch continues on past the bctr into the
9401 new page which might have stale instructions. If they
9402 fail to be flushed, then they will be executed after the
9403 bctr executes. Either of the following modifications
9404 prevent the bad prefetch from happening in the first
9407 . lis 9,new_page@ha lis 9,new_page@ha
9408 . addi 9,9,new_page@l addi 9,9,new_page@l
9411 . nop b somewhere_else
9412 . b somewhere_else nop
9413 . new_page: new_page:
9415 insn = bfd_get_32 (input_bfd, contents + offset);
9416 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9417 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9418 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9419 || ((insn & (0x3f << 26)) == (19u << 26)
9420 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9421 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9424 patch_addr = (start_addr + input_section->size
9425 - relax_info->workaround_size);
9426 patch_addr = (patch_addr + 15) & -16;
9427 patch_off = patch_addr - start_addr;
9428 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9431 && rel->r_offset >= offset
9432 && rel->r_offset < offset + 4)
9434 /* If the insn we are patching had a reloc, adjust the
9435 reloc r_offset so that the reloc applies to the moved
9436 location. This matters for -r and --emit-relocs. */
9437 if (rel + 1 != relend)
9439 Elf_Internal_Rela tmp = *rel;
9441 /* Keep the relocs sorted by r_offset. */
9442 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9445 relend[-1].r_offset += patch_off - offset;
9450 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9451 && (insn & 2) == 0 /* relative */)
9453 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9455 delta += offset - patch_off;
9456 if (info->relocatable && rel != NULL)
9458 if (!info->relocatable && rel != NULL)
9460 enum elf_ppc_reloc_type r_type;
9462 r_type = ELF32_R_TYPE (relend[-1].r_info);
9463 if (r_type == R_PPC_REL14_BRTAKEN)
9464 insn |= BRANCH_PREDICT_BIT;
9465 else if (r_type == R_PPC_REL14_BRNTAKEN)
9466 insn &= ~BRANCH_PREDICT_BIT;
9468 BFD_ASSERT (r_type == R_PPC_REL14);
9470 if ((r_type == R_PPC_REL14_BRTAKEN
9471 || r_type == R_PPC_REL14_BRNTAKEN)
9472 && delta + 0x8000 < 0x10000
9473 && (bfd_signed_vma) delta < 0)
9474 insn ^= BRANCH_PREDICT_BIT;
9476 if (delta + 0x8000 < 0x10000)
9478 bfd_put_32 (input_bfd,
9479 (insn & ~0xfffc) | (delta & 0xfffc),
9480 contents + patch_off);
9482 bfd_put_32 (input_bfd,
9483 B | ((offset + 4 - patch_off) & 0x3fffffc),
9484 contents + patch_off);
9491 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9493 relend[-1].r_offset += 8;
9494 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9496 bfd_put_32 (input_bfd,
9497 (insn & ~0xfffc) | 8,
9498 contents + patch_off);
9500 bfd_put_32 (input_bfd,
9501 B | ((offset + 4 - patch_off) & 0x3fffffc),
9502 contents + patch_off);
9504 bfd_put_32 (input_bfd,
9505 B | ((delta - 8) & 0x3fffffc),
9506 contents + patch_off);
9512 bfd_put_32 (input_bfd, insn, contents + patch_off);
9514 bfd_put_32 (input_bfd,
9515 B | ((offset + 4 - patch_off) & 0x3fffffc),
9516 contents + patch_off);
9519 BFD_ASSERT (patch_off <= input_section->size);
9520 relax_info->workaround_size = input_section->size - patch_off;
9527 /* Finish up dynamic symbol handling. We set the contents of various
9528 dynamic sections here. */
9531 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9532 struct bfd_link_info *info,
9533 struct elf_link_hash_entry *h,
9534 Elf_Internal_Sym *sym)
9536 struct ppc_elf_link_hash_table *htab;
9537 struct plt_entry *ent;
9538 bfd_boolean doneone;
9541 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9542 h->root.root.string);
9545 htab = ppc_elf_hash_table (info);
9546 BFD_ASSERT (htab->elf.dynobj != NULL);
9549 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9550 if (ent->plt.offset != (bfd_vma) -1)
9554 Elf_Internal_Rela rela;
9556 bfd_vma reloc_index;
9558 if (htab->plt_type == PLT_NEW
9559 || !htab->elf.dynamic_sections_created
9560 || h->dynindx == -1)
9561 reloc_index = ent->plt.offset / 4;
9564 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9565 / htab->plt_slot_size);
9566 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9567 && htab->plt_type == PLT_OLD)
9568 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9571 /* This symbol has an entry in the procedure linkage table.
9573 if (htab->plt_type == PLT_VXWORKS
9574 && htab->elf.dynamic_sections_created
9575 && h->dynindx != -1)
9578 const bfd_vma *plt_entry;
9580 /* The first three entries in .got.plt are reserved. */
9581 got_offset = (reloc_index + 3) * 4;
9583 /* Use the right PLT. */
9584 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9585 : ppc_elf_vxworks_plt_entry;
9587 /* Fill in the .plt on VxWorks. */
9590 bfd_put_32 (output_bfd,
9591 plt_entry[0] | PPC_HA (got_offset),
9592 htab->plt->contents + ent->plt.offset + 0);
9593 bfd_put_32 (output_bfd,
9594 plt_entry[1] | PPC_LO (got_offset),
9595 htab->plt->contents + ent->plt.offset + 4);
9599 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9601 bfd_put_32 (output_bfd,
9602 plt_entry[0] | PPC_HA (got_loc),
9603 htab->plt->contents + ent->plt.offset + 0);
9604 bfd_put_32 (output_bfd,
9605 plt_entry[1] | PPC_LO (got_loc),
9606 htab->plt->contents + ent->plt.offset + 4);
9609 bfd_put_32 (output_bfd, plt_entry[2],
9610 htab->plt->contents + ent->plt.offset + 8);
9611 bfd_put_32 (output_bfd, plt_entry[3],
9612 htab->plt->contents + ent->plt.offset + 12);
9614 /* This instruction is an immediate load. The value loaded is
9615 the byte offset of the R_PPC_JMP_SLOT relocation from the
9616 start of the .rela.plt section. The value is stored in the
9617 low-order 16 bits of the load instruction. */
9618 /* NOTE: It appears that this is now an index rather than a
9619 prescaled offset. */
9620 bfd_put_32 (output_bfd,
9621 plt_entry[4] | reloc_index,
9622 htab->plt->contents + ent->plt.offset + 16);
9623 /* This instruction is a PC-relative branch whose target is
9624 the start of the PLT section. The address of this branch
9625 instruction is 20 bytes beyond the start of this PLT entry.
9626 The address is encoded in bits 6-29, inclusive. The value
9627 stored is right-shifted by two bits, permitting a 26-bit
9629 bfd_put_32 (output_bfd,
9631 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9632 htab->plt->contents + ent->plt.offset + 20);
9633 bfd_put_32 (output_bfd, plt_entry[6],
9634 htab->plt->contents + ent->plt.offset + 24);
9635 bfd_put_32 (output_bfd, plt_entry[7],
9636 htab->plt->contents + ent->plt.offset + 28);
9638 /* Fill in the GOT entry corresponding to this PLT slot with
9639 the address immediately after the "bctr" instruction
9640 in this PLT entry. */
9641 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9642 + htab->plt->output_offset
9643 + ent->plt.offset + 16),
9644 htab->sgotplt->contents + got_offset);
9648 /* Fill in a couple of entries in .rela.plt.unloaded. */
9649 loc = htab->srelplt2->contents
9650 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9651 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9652 * sizeof (Elf32_External_Rela));
9654 /* Provide the @ha relocation for the first instruction. */
9655 rela.r_offset = (htab->plt->output_section->vma
9656 + htab->plt->output_offset
9657 + ent->plt.offset + 2);
9658 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9660 rela.r_addend = got_offset;
9661 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9662 loc += sizeof (Elf32_External_Rela);
9664 /* Provide the @l relocation for the second instruction. */
9665 rela.r_offset = (htab->plt->output_section->vma
9666 + htab->plt->output_offset
9667 + ent->plt.offset + 6);
9668 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9670 rela.r_addend = got_offset;
9671 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9672 loc += sizeof (Elf32_External_Rela);
9674 /* Provide a relocation for the GOT entry corresponding to this
9675 PLT slot. Point it at the middle of the .plt entry. */
9676 rela.r_offset = (htab->sgotplt->output_section->vma
9677 + htab->sgotplt->output_offset
9679 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9681 rela.r_addend = ent->plt.offset + 16;
9682 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9685 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9686 In particular, the offset for the relocation is not the
9687 address of the PLT entry for this function, as specified
9688 by the ABI. Instead, the offset is set to the address of
9689 the GOT slot for this function. See EABI 4.4.4.1. */
9690 rela.r_offset = (htab->sgotplt->output_section->vma
9691 + htab->sgotplt->output_offset
9697 asection *splt = htab->plt;
9698 if (!htab->elf.dynamic_sections_created
9699 || h->dynindx == -1)
9702 rela.r_offset = (splt->output_section->vma
9703 + splt->output_offset
9705 if (htab->plt_type == PLT_OLD
9706 || !htab->elf.dynamic_sections_created
9707 || h->dynindx == -1)
9709 /* We don't need to fill in the .plt. The ppc dynamic
9710 linker will fill it in. */
9714 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9715 + htab->glink->output_section->vma
9716 + htab->glink->output_offset);
9717 bfd_put_32 (output_bfd, val,
9718 splt->contents + ent->plt.offset);
9722 /* Fill in the entry in the .rela.plt section. */
9724 if (!htab->elf.dynamic_sections_created
9725 || h->dynindx == -1)
9727 BFD_ASSERT (h->type == STT_GNU_IFUNC
9729 && (h->root.type == bfd_link_hash_defined
9730 || h->root.type == bfd_link_hash_defweak));
9731 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9732 rela.r_addend = SYM_VAL (h);
9735 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9737 if (!htab->elf.dynamic_sections_created
9738 || h->dynindx == -1)
9739 loc = (htab->reliplt->contents
9740 + (htab->reliplt->reloc_count++
9741 * sizeof (Elf32_External_Rela)));
9743 loc = (htab->relplt->contents
9744 + reloc_index * sizeof (Elf32_External_Rela));
9745 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9747 if (!h->def_regular)
9749 /* Mark the symbol as undefined, rather than as
9750 defined in the .plt section. Leave the value if
9751 there were any relocations where pointer equality
9752 matters (this is a clue for the dynamic linker, to
9753 make function pointer comparisons work between an
9754 application and shared library), otherwise set it
9756 sym->st_shndx = SHN_UNDEF;
9757 if (!h->pointer_equality_needed)
9759 else if (!h->ref_regular_nonweak)
9761 /* This breaks function pointer comparisons, but
9762 that is better than breaking tests for a NULL
9763 function pointer. */
9767 else if (h->type == STT_GNU_IFUNC
9770 /* Set the value of ifunc symbols in a non-pie
9771 executable to the glink entry. This is to avoid
9772 text relocations. We can't do this for ifunc in
9773 allocate_dynrelocs, as we do for normal dynamic
9774 function symbols with plt entries, because we need
9775 to keep the original value around for the ifunc
9777 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9778 (output_bfd, htab->glink->output_section));
9779 sym->st_value = (ent->glink_offset
9780 + htab->glink->output_offset
9781 + htab->glink->output_section->vma);
9786 if (htab->plt_type == PLT_NEW
9787 || !htab->elf.dynamic_sections_created
9788 || h->dynindx == -1)
9791 asection *splt = htab->plt;
9792 if (!htab->elf.dynamic_sections_created
9793 || h->dynindx == -1)
9796 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9798 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
9800 bfd_put_32 (output_bfd, LWZ_11_3, p);
9802 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9804 bfd_put_32 (output_bfd, MR_0_3, p);
9806 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9808 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9810 bfd_put_32 (output_bfd, BEQLR, p);
9812 bfd_put_32 (output_bfd, MR_3_0, p);
9814 bfd_put_32 (output_bfd, NOP, p);
9818 write_glink_stub (ent, splt, p, info);
9821 /* We only need one non-PIC glink stub. */
9831 Elf_Internal_Rela rela;
9834 /* This symbols needs a copy reloc. Set it up. */
9837 fprintf (stderr, ", copy");
9840 BFD_ASSERT (h->dynindx != -1);
9842 if (ppc_elf_hash_entry (h)->has_sda_refs)
9846 BFD_ASSERT (s != NULL);
9848 rela.r_offset = SYM_VAL (h);
9849 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9851 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9852 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9856 fprintf (stderr, "\n");
9862 static enum elf_reloc_type_class
9863 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9864 const asection *rel_sec,
9865 const Elf_Internal_Rela *rela)
9867 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9869 if (rel_sec == htab->reliplt)
9870 return reloc_class_ifunc;
9872 switch (ELF32_R_TYPE (rela->r_info))
9874 case R_PPC_RELATIVE:
9875 return reloc_class_relative;
9876 case R_PPC_JMP_SLOT:
9877 return reloc_class_plt;
9879 return reloc_class_copy;
9881 return reloc_class_normal;
9885 /* Finish up the dynamic sections. */
9888 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9889 struct bfd_link_info *info)
9893 struct ppc_elf_link_hash_table *htab;
9896 bfd_boolean ret = TRUE;
9899 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9902 htab = ppc_elf_hash_table (info);
9903 dynobj = elf_hash_table (info)->dynobj;
9904 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9905 if (htab->is_vxworks)
9906 splt = bfd_get_linker_section (dynobj, ".plt");
9911 if (htab->elf.hgot != NULL)
9912 got = SYM_VAL (htab->elf.hgot);
9914 if (htab->elf.dynamic_sections_created)
9916 Elf32_External_Dyn *dyncon, *dynconend;
9918 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9920 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9921 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9922 for (; dyncon < dynconend; dyncon++)
9924 Elf_Internal_Dyn dyn;
9927 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9932 if (htab->is_vxworks)
9936 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9940 dyn.d_un.d_val = htab->relplt->size;
9945 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9949 dyn.d_un.d_ptr = got;
9953 if (htab->is_vxworks)
9956 dyn.d_un.d_ptr -= htab->relplt->size;
9962 if (htab->is_vxworks
9963 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9968 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9972 if (htab->got != NULL)
9974 if (htab->elf.hgot->root.u.def.section == htab->got
9975 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9977 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9979 p += htab->elf.hgot->root.u.def.value;
9980 if (htab->plt_type == PLT_OLD)
9982 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9983 so that a function can easily find the address of
9984 _GLOBAL_OFFSET_TABLE_. */
9985 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9986 < htab->elf.hgot->root.u.def.section->size);
9987 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9992 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9993 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9994 < htab->elf.hgot->root.u.def.section->size);
9995 bfd_put_32 (output_bfd, val, p);
10000 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10001 htab->elf.hgot->root.root.string,
10002 (htab->sgotplt != NULL
10003 ? htab->sgotplt->name : htab->got->name));
10004 bfd_set_error (bfd_error_bad_value);
10008 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
10011 /* Fill in the first entry in the VxWorks procedure linkage table. */
10012 if (splt && splt->size > 0)
10014 /* Use the right PLT. */
10015 const bfd_vma *plt_entry = (info->shared
10016 ? ppc_elf_vxworks_pic_plt0_entry
10017 : ppc_elf_vxworks_plt0_entry);
10021 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10023 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10024 splt->contents + 0);
10025 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10026 splt->contents + 4);
10030 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10031 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10033 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10034 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10035 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10036 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10037 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10038 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10040 if (! info->shared)
10042 Elf_Internal_Rela rela;
10045 loc = htab->srelplt2->contents;
10047 /* Output the @ha relocation for the first instruction. */
10048 rela.r_offset = (htab->plt->output_section->vma
10049 + htab->plt->output_offset
10051 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10053 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10054 loc += sizeof (Elf32_External_Rela);
10056 /* Output the @l relocation for the second instruction. */
10057 rela.r_offset = (htab->plt->output_section->vma
10058 + htab->plt->output_offset
10060 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10062 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10063 loc += sizeof (Elf32_External_Rela);
10065 /* Fix up the remaining relocations. They may have the wrong
10066 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10067 in which symbols were output. */
10068 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10070 Elf_Internal_Rela rel;
10072 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10073 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10074 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10075 loc += sizeof (Elf32_External_Rela);
10077 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10078 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10079 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10080 loc += sizeof (Elf32_External_Rela);
10082 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10083 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10084 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10085 loc += sizeof (Elf32_External_Rela);
10090 if (htab->glink != NULL
10091 && htab->glink->contents != NULL
10092 && htab->elf.dynamic_sections_created)
10095 unsigned char *endp;
10100 * PIC glink code is the following:
10102 * # ith PLT code stub.
10103 * addis 11,30,(plt+(i-1)*4-got)@ha
10104 * lwz 11,(plt+(i-1)*4-got)@l(11)
10108 * # A table of branches, one for each plt entry.
10109 * # The idea is that the plt call stub loads ctr and r11 with these
10110 * # addresses, so (r11 - res_0) gives the plt index * 4.
10111 * res_0: b PLTresolve
10112 * res_1: b PLTresolve
10114 * # Some number of entries towards the end can be nops
10120 * addis 11,11,(1f-res_0)@ha
10123 * 1: addi 11,11,(1b-res_0)@l
10126 * sub 11,11,12 # r11 = index * 4
10127 * addis 12,12,(got+4-1b)@ha
10128 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10129 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10132 * add 11,0,11 # r11 = index * 12 = reloc offset.
10135 static const unsigned int pic_plt_resolve[] =
10156 * Non-PIC glink code is a little simpler.
10158 * # ith PLT code stub.
10159 * lis 11,(plt+(i-1)*4)@ha
10160 * lwz 11,(plt+(i-1)*4)@l(11)
10164 * The branch table is the same, then comes
10167 * lis 12,(got+4)@ha
10168 * addis 11,11,(-res_0)@ha
10169 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10170 * addi 11,11,(-res_0)@l # r11 = index * 4
10173 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10174 * add 11,0,11 # r11 = index * 12 = reloc offset.
10177 static const unsigned int plt_resolve[] =
10197 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10199 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10202 /* Build the branch table, one for each plt entry (less one),
10203 and perhaps some padding. */
10204 p = htab->glink->contents;
10205 p += htab->glink_pltresolve;
10206 endp = htab->glink->contents;
10207 endp += htab->glink->size - GLINK_PLTRESOLVE;
10208 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10210 bfd_put_32 (output_bfd, B + endp - p, p);
10215 bfd_put_32 (output_bfd, NOP, p);
10219 res0 = (htab->glink_pltresolve
10220 + htab->glink->output_section->vma
10221 + htab->glink->output_offset);
10223 if (htab->params->ppc476_workaround)
10225 /* Ensure that a call stub at the end of a page doesn't
10226 result in prefetch over the end of the page into the
10227 glink branch table. */
10228 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10230 bfd_vma glink_start = (htab->glink->output_section->vma
10231 + htab->glink->output_offset);
10233 for (page_addr = res0 & -pagesize;
10234 page_addr > glink_start;
10235 page_addr -= pagesize)
10237 /* We have a plt call stub that may need fixing. */
10241 loc = htab->glink->contents + page_addr - 4 - glink_start;
10242 insn = bfd_get_32 (output_bfd, loc);
10245 /* By alignment, we know that there must be at least
10246 one other call stub before this one. */
10247 insn = bfd_get_32 (output_bfd, loc - 16);
10249 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10251 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10256 /* Last comes the PLTresolve stub. */
10261 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10263 unsigned int insn = pic_plt_resolve[i];
10265 if (htab->params->ppc476_workaround && insn == NOP)
10267 bfd_put_32 (output_bfd, insn, p);
10270 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10272 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10273 + htab->glink->output_section->vma
10274 + htab->glink->output_offset);
10276 bfd_put_32 (output_bfd,
10277 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10278 bfd_put_32 (output_bfd,
10279 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10280 bfd_put_32 (output_bfd,
10281 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10282 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10284 bfd_put_32 (output_bfd,
10285 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10286 bfd_put_32 (output_bfd,
10287 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10291 bfd_put_32 (output_bfd,
10292 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10293 bfd_put_32 (output_bfd,
10294 LWZ_12_12 + 4, p + 9*4);
10299 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10301 unsigned int insn = plt_resolve[i];
10303 if (htab->params->ppc476_workaround && insn == NOP)
10305 bfd_put_32 (output_bfd, insn, p);
10308 p -= 4 * ARRAY_SIZE (plt_resolve);
10310 bfd_put_32 (output_bfd,
10311 LIS_12 + PPC_HA (got + 4), p + 0*4);
10312 bfd_put_32 (output_bfd,
10313 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10314 bfd_put_32 (output_bfd,
10315 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10316 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10318 bfd_put_32 (output_bfd,
10319 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10320 bfd_put_32 (output_bfd,
10321 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10325 bfd_put_32 (output_bfd,
10326 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10327 bfd_put_32 (output_bfd,
10328 LWZ_12_12 + 4, p + 6*4);
10333 if (htab->glink_eh_frame != NULL
10334 && htab->glink_eh_frame->contents != NULL)
10336 unsigned char *p = htab->glink_eh_frame->contents;
10339 p += sizeof (glink_eh_frame_cie);
10344 /* Offset to .glink. */
10345 val = (htab->glink->output_section->vma
10346 + htab->glink->output_offset);
10347 val -= (htab->glink_eh_frame->output_section->vma
10348 + htab->glink_eh_frame->output_offset);
10349 val -= p - htab->glink_eh_frame->contents;
10350 bfd_put_32 (htab->elf.dynobj, val, p);
10352 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10353 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10354 htab->glink_eh_frame,
10355 htab->glink_eh_frame->contents))
10362 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10363 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10364 #define TARGET_BIG_SYM powerpc_elf32_vec
10365 #define TARGET_BIG_NAME "elf32-powerpc"
10366 #define ELF_ARCH bfd_arch_powerpc
10367 #define ELF_TARGET_ID PPC32_ELF_DATA
10368 #define ELF_MACHINE_CODE EM_PPC
10369 #ifdef __QNXTARGET__
10370 #define ELF_MAXPAGESIZE 0x1000
10371 #define ELF_COMMONPAGESIZE 0x1000
10373 #define ELF_MAXPAGESIZE 0x10000
10374 #define ELF_COMMONPAGESIZE 0x10000
10376 #define ELF_MINPAGESIZE 0x1000
10377 #define elf_info_to_howto ppc_elf_info_to_howto
10379 #ifdef EM_CYGNUS_POWERPC
10380 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10384 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10387 #define elf_backend_plt_not_loaded 1
10388 #define elf_backend_can_gc_sections 1
10389 #define elf_backend_can_refcount 1
10390 #define elf_backend_rela_normal 1
10391 #define elf_backend_caches_rawsize 1
10393 #define bfd_elf32_mkobject ppc_elf_mkobject
10394 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10395 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10396 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10397 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10398 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10399 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10400 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10402 #define elf_backend_object_p ppc_elf_object_p
10403 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10404 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10405 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10406 #define elf_backend_relocate_section ppc_elf_relocate_section
10407 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10408 #define elf_backend_check_relocs ppc_elf_check_relocs
10409 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10410 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10411 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10412 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10413 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10414 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10415 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10416 #define elf_backend_fake_sections ppc_elf_fake_sections
10417 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10418 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10419 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10420 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10421 #define elf_backend_write_core_note ppc_elf_write_core_note
10422 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10423 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10424 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10425 #define elf_backend_write_section ppc_elf_write_section
10426 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10427 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10428 #define elf_backend_action_discarded ppc_elf_action_discarded
10429 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10430 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10431 #define elf_backend_section_processing ppc_elf_section_processing
10433 #include "elf32-target.h"
10435 /* FreeBSD Target */
10437 #undef TARGET_LITTLE_SYM
10438 #undef TARGET_LITTLE_NAME
10440 #undef TARGET_BIG_SYM
10441 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10442 #undef TARGET_BIG_NAME
10443 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10446 #define ELF_OSABI ELFOSABI_FREEBSD
10449 #define elf32_bed elf32_powerpc_fbsd_bed
10451 #include "elf32-target.h"
10453 /* VxWorks Target */
10455 #undef TARGET_LITTLE_SYM
10456 #undef TARGET_LITTLE_NAME
10458 #undef TARGET_BIG_SYM
10459 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10460 #undef TARGET_BIG_NAME
10461 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10465 /* VxWorks uses the elf default section flags for .plt. */
10466 static const struct bfd_elf_special_section *
10467 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10469 if (sec->name == NULL)
10472 if (strcmp (sec->name, ".plt") == 0)
10473 return _bfd_elf_get_sec_type_attr (abfd, sec);
10475 return ppc_elf_get_sec_type_attr (abfd, sec);
10478 /* Like ppc_elf_link_hash_table_create, but overrides
10479 appropriately for VxWorks. */
10480 static struct bfd_link_hash_table *
10481 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10483 struct bfd_link_hash_table *ret;
10485 ret = ppc_elf_link_hash_table_create (abfd);
10488 struct ppc_elf_link_hash_table *htab
10489 = (struct ppc_elf_link_hash_table *)ret;
10490 htab->is_vxworks = 1;
10491 htab->plt_type = PLT_VXWORKS;
10492 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10493 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10494 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10499 /* Tweak magic VxWorks symbols as they are loaded. */
10501 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10502 struct bfd_link_info *info,
10503 Elf_Internal_Sym *sym,
10504 const char **namep ATTRIBUTE_UNUSED,
10505 flagword *flagsp ATTRIBUTE_UNUSED,
10509 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10513 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10517 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10519 ppc_elf_final_write_processing(abfd, linker);
10520 elf_vxworks_final_write_processing(abfd, linker);
10523 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10525 #undef elf_backend_want_plt_sym
10526 #define elf_backend_want_plt_sym 1
10527 #undef elf_backend_want_got_plt
10528 #define elf_backend_want_got_plt 1
10529 #undef elf_backend_got_symbol_offset
10530 #define elf_backend_got_symbol_offset 0
10531 #undef elf_backend_plt_not_loaded
10532 #define elf_backend_plt_not_loaded 0
10533 #undef elf_backend_plt_readonly
10534 #define elf_backend_plt_readonly 1
10535 #undef elf_backend_got_header_size
10536 #define elf_backend_got_header_size 12
10538 #undef bfd_elf32_get_synthetic_symtab
10540 #undef bfd_elf32_bfd_link_hash_table_create
10541 #define bfd_elf32_bfd_link_hash_table_create \
10542 ppc_elf_vxworks_link_hash_table_create
10543 #undef elf_backend_add_symbol_hook
10544 #define elf_backend_add_symbol_hook \
10545 ppc_elf_vxworks_add_symbol_hook
10546 #undef elf_backend_link_output_symbol_hook
10547 #define elf_backend_link_output_symbol_hook \
10548 elf_vxworks_link_output_symbol_hook
10549 #undef elf_backend_final_write_processing
10550 #define elf_backend_final_write_processing \
10551 ppc_elf_vxworks_final_write_processing
10552 #undef elf_backend_get_sec_type_attr
10553 #define elf_backend_get_sec_type_attr \
10554 ppc_elf_vxworks_get_sec_type_attr
10555 #undef elf_backend_emit_relocs
10556 #define elf_backend_emit_relocs \
10557 elf_vxworks_emit_relocs
10560 #define elf32_bed ppc_elf_vxworks_bed
10561 #undef elf_backend_post_process_headers
10563 #include "elf32-target.h"