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) (_("%A: 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 stub_vma = glink_vma - (bfd_vma) count * 16;
2929 /* If the stubs are those for -shared/-pie then we might have
2930 multiple stubs for each plt entry. If that is the case then
2931 there is no way to associate stubs with their plt entries short
2932 of figuring out the GOT pointer value used in the stub. */
2933 if (!is_nonpic_glink_stub (abfd, glink,
2934 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
2937 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2938 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
2941 size = count * sizeof (asymbol);
2942 p = relplt->relocation;
2943 for (i = 0; i < count; i++, p++)
2945 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
2947 size += sizeof ("+0x") - 1 + 8;
2950 size += sizeof (asymbol) + sizeof ("__glink");
2953 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
2955 s = *ret = bfd_malloc (size);
2959 names = (char *) (s + count + 1 + (resolv_vma != 0));
2960 p = relplt->relocation;
2961 for (i = 0; i < count; i++, p++)
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;
2972 s->value = stub_vma - glink->vma;
2975 len = strlen ((*p->sym_ptr_ptr)->name);
2976 memcpy (names, (*p->sym_ptr_ptr)->name, len);
2980 memcpy (names, "+0x", sizeof ("+0x") - 1);
2981 names += sizeof ("+0x") - 1;
2982 bfd_sprintf_vma (abfd, names, p->addend);
2983 names += strlen (names);
2985 memcpy (names, "@plt", sizeof ("@plt"));
2986 names += sizeof ("@plt");
2991 /* Add a symbol at the start of the glink branch table. */
2992 memset (s, 0, sizeof *s);
2994 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
2996 s->value = glink_vma - glink->vma;
2998 memcpy (names, "__glink", sizeof ("__glink"));
2999 names += sizeof ("__glink");
3005 /* Add a symbol for the glink PLT resolver. */
3006 memset (s, 0, sizeof *s);
3008 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3010 s->value = resolv_vma - glink->vma;
3012 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3013 names += sizeof ("__glink_PLTresolve");
3021 /* The following functions are specific to the ELF linker, while
3022 functions above are used generally. They appear in this file more
3023 or less in the order in which they are called. eg.
3024 ppc_elf_check_relocs is called early in the link process,
3025 ppc_elf_finish_dynamic_sections is one of the last functions
3028 /* Track PLT entries needed for a given symbol. We might need more
3029 than one glink entry per symbol when generating a pic binary. */
3032 struct plt_entry *next;
3034 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3035 This field stores the offset into .got2 used to initialise the
3036 GOT pointer reg. It will always be at least 32768. (Current
3037 gcc always uses an offset of 32768, but ld -r will pack .got2
3038 sections together resulting in larger offsets). */
3041 /* The .got2 section. */
3044 /* PLT refcount or offset. */
3047 bfd_signed_vma refcount;
3051 /* .glink stub offset. */
3052 bfd_vma glink_offset;
3055 /* Of those relocs that might be copied as dynamic relocs, this function
3056 selects those that must be copied when linking a shared library,
3057 even when the symbol is local. */
3060 must_be_dyn_reloc (struct bfd_link_info *info,
3061 enum elf_ppc_reloc_type r_type)
3070 case R_PPC_REL14_BRTAKEN:
3071 case R_PPC_REL14_BRNTAKEN:
3077 case R_PPC_TPREL16_LO:
3078 case R_PPC_TPREL16_HI:
3079 case R_PPC_TPREL16_HA:
3080 return !info->executable;
3084 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3085 copying dynamic variables from a shared lib into an app's dynbss
3086 section, and instead use a dynamic relocation to point into the
3088 #define ELIMINATE_COPY_RELOCS 1
3090 /* Used to track dynamic relocations for local symbols. */
3091 struct ppc_dyn_relocs
3093 struct ppc_dyn_relocs *next;
3095 /* The input section of the reloc. */
3098 /* Total number of relocs copied for the input section. */
3099 unsigned int count : 31;
3101 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3102 unsigned int ifunc : 1;
3105 /* PPC ELF linker hash entry. */
3107 struct ppc_elf_link_hash_entry
3109 struct elf_link_hash_entry elf;
3111 /* If this symbol is used in the linker created sections, the processor
3112 specific backend uses this field to map the field into the offset
3113 from the beginning of the section. */
3114 elf_linker_section_pointers_t *linker_section_pointer;
3116 /* Track dynamic relocs copied for this symbol. */
3117 struct elf_dyn_relocs *dyn_relocs;
3119 /* Contexts in which symbol is used in the GOT (or TOC).
3120 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3121 corresponding relocs are encountered during check_relocs.
3122 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3123 indicate the corresponding GOT entry type is not needed. */
3124 #define TLS_GD 1 /* GD reloc. */
3125 #define TLS_LD 2 /* LD reloc. */
3126 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3127 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3128 #define TLS_TLS 16 /* Any TLS reloc. */
3129 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3130 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3133 /* Nonzero if we have seen a small data relocation referring to this
3135 unsigned char has_sda_refs;
3138 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3140 /* PPC ELF linker hash table. */
3142 struct ppc_elf_link_hash_table
3144 struct elf_link_hash_table elf;
3146 /* Various options passed from the linker. */
3147 struct ppc_elf_params *params;
3149 /* Short-cuts to get to dynamic linker sections. */
3161 elf_linker_section_t sdata[2];
3163 asection *glink_eh_frame;
3165 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3168 /* The .got.plt section (VxWorks only)*/
3171 /* Shortcut to __tls_get_addr. */
3172 struct elf_link_hash_entry *tls_get_addr;
3174 /* The bfd that forced an old-style PLT. */
3177 /* TLS local dynamic got entry handling. */
3179 bfd_signed_vma refcount;
3183 /* Offset of branch table to PltResolve function in glink. */
3184 bfd_vma glink_pltresolve;
3186 /* Size of reserved GOT entries. */
3187 unsigned int got_header_size;
3188 /* Non-zero if allocating the header left a gap. */
3189 unsigned int got_gap;
3191 /* The type of PLT we have chosen to use. */
3192 enum ppc_elf_plt_type plt_type;
3194 /* True if the target system is VxWorks. */
3195 unsigned int is_vxworks:1;
3197 /* The size of PLT entries. */
3199 /* The distance between adjacent PLT slots. */
3201 /* The size of the first PLT entry. */
3202 int plt_initial_entry_size;
3204 /* Small local sym cache. */
3205 struct sym_cache sym_cache;
3208 /* Rename some of the generic section flags to better document how they
3209 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3211 /* Nonzero if this section has TLS related relocations. */
3212 #define has_tls_reloc sec_flg0
3214 /* Nonzero if this section has a call to __tls_get_addr. */
3215 #define has_tls_get_addr_call sec_flg1
3217 /* Get the PPC ELF linker hash table from a link_info structure. */
3219 #define ppc_elf_hash_table(p) \
3220 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3221 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3223 /* Create an entry in a PPC ELF linker hash table. */
3225 static struct bfd_hash_entry *
3226 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3227 struct bfd_hash_table *table,
3230 /* Allocate the structure if it has not already been allocated by a
3234 entry = bfd_hash_allocate (table,
3235 sizeof (struct ppc_elf_link_hash_entry));
3240 /* Call the allocation method of the superclass. */
3241 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3244 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3245 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3246 ppc_elf_hash_entry (entry)->tls_mask = 0;
3247 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3253 /* Create a PPC ELF linker hash table. */
3255 static struct bfd_link_hash_table *
3256 ppc_elf_link_hash_table_create (bfd *abfd)
3258 struct ppc_elf_link_hash_table *ret;
3259 static struct ppc_elf_params default_params = { PLT_OLD, 0, 1, 0, 0, 12 };
3261 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3265 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3266 ppc_elf_link_hash_newfunc,
3267 sizeof (struct ppc_elf_link_hash_entry),
3274 ret->elf.init_plt_refcount.refcount = 0;
3275 ret->elf.init_plt_refcount.glist = NULL;
3276 ret->elf.init_plt_offset.offset = 0;
3277 ret->elf.init_plt_offset.glist = NULL;
3279 ret->params = &default_params;
3281 ret->sdata[0].name = ".sdata";
3282 ret->sdata[0].sym_name = "_SDA_BASE_";
3283 ret->sdata[0].bss_name = ".sbss";
3285 ret->sdata[1].name = ".sdata2";
3286 ret->sdata[1].sym_name = "_SDA2_BASE_";
3287 ret->sdata[1].bss_name = ".sbss2";
3289 ret->plt_entry_size = 12;
3290 ret->plt_slot_size = 8;
3291 ret->plt_initial_entry_size = 72;
3293 return &ret->elf.root;
3296 /* Hook linker params into hash table. */
3299 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3301 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3304 htab->params = params;
3307 /* Create .got and the related sections. */
3310 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3312 struct ppc_elf_link_hash_table *htab;
3316 if (!_bfd_elf_create_got_section (abfd, info))
3319 htab = ppc_elf_hash_table (info);
3320 htab->got = s = bfd_get_linker_section (abfd, ".got");
3324 if (htab->is_vxworks)
3326 htab->sgotplt = bfd_get_linker_section (abfd, ".got.plt");
3332 /* The powerpc .got has a blrl instruction in it. Mark it
3334 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3335 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3336 if (!bfd_set_section_flags (abfd, s, flags))
3340 htab->relgot = bfd_get_linker_section (abfd, ".rela.got");
3347 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3348 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3349 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3352 ppc_elf_create_linker_section (bfd *abfd,
3353 struct bfd_link_info *info,
3355 elf_linker_section_t *lsect)
3359 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3360 | SEC_LINKER_CREATED);
3362 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3367 /* Define the sym on the first section of this name. */
3368 s = bfd_get_section_by_name (abfd, lsect->name);
3370 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3371 if (lsect->sym == NULL)
3373 lsect->sym->root.u.def.value = 0x8000;
3378 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3380 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3384 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3385 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3386 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3389 || !bfd_set_section_alignment (abfd, s,
3390 htab->params->ppc476_workaround ? 6 : 4))
3393 if (!info->no_ld_generated_unwind_info)
3395 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3396 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3397 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3398 htab->glink_eh_frame = s;
3400 || !bfd_set_section_alignment (abfd, s, 2))
3404 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3405 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3408 || !bfd_set_section_alignment (abfd, s, 4))
3411 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3412 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3413 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3416 || ! bfd_set_section_alignment (abfd, s, 2))
3419 if (!ppc_elf_create_linker_section (abfd, info, 0,
3423 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3430 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3431 to output sections (just like _bfd_elf_create_dynamic_sections has
3432 to create .dynbss and .rela.bss). */
3435 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3437 struct ppc_elf_link_hash_table *htab;
3441 htab = ppc_elf_hash_table (info);
3443 if (htab->got == NULL
3444 && !ppc_elf_create_got (abfd, info))
3447 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3450 if (htab->glink == NULL
3451 && !ppc_elf_create_glink (abfd, info))
3454 htab->dynbss = bfd_get_linker_section (abfd, ".dynbss");
3455 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3456 SEC_ALLOC | SEC_LINKER_CREATED);
3463 htab->relbss = bfd_get_linker_section (abfd, ".rela.bss");
3464 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3465 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3466 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3469 || ! bfd_set_section_alignment (abfd, s, 2))
3473 if (htab->is_vxworks
3474 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3477 htab->relplt = bfd_get_linker_section (abfd, ".rela.plt");
3478 htab->plt = s = bfd_get_linker_section (abfd, ".plt");
3482 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3483 if (htab->plt_type == PLT_VXWORKS)
3484 /* The VxWorks PLT is a loaded section with contents. */
3485 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3486 return bfd_set_section_flags (abfd, s, flags);
3489 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3492 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3493 struct elf_link_hash_entry *dir,
3494 struct elf_link_hash_entry *ind)
3496 struct ppc_elf_link_hash_entry *edir, *eind;
3498 edir = (struct ppc_elf_link_hash_entry *) dir;
3499 eind = (struct ppc_elf_link_hash_entry *) ind;
3501 edir->tls_mask |= eind->tls_mask;
3502 edir->has_sda_refs |= eind->has_sda_refs;
3504 /* If called to transfer flags for a weakdef during processing
3505 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3506 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3507 if (!(ELIMINATE_COPY_RELOCS
3508 && eind->elf.root.type != bfd_link_hash_indirect
3509 && edir->elf.dynamic_adjusted))
3510 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3512 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3513 edir->elf.ref_regular |= eind->elf.ref_regular;
3514 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3515 edir->elf.needs_plt |= eind->elf.needs_plt;
3516 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3518 if (eind->dyn_relocs != NULL)
3520 if (edir->dyn_relocs != NULL)
3522 struct elf_dyn_relocs **pp;
3523 struct elf_dyn_relocs *p;
3525 /* Add reloc counts against the indirect sym to the direct sym
3526 list. Merge any entries against the same section. */
3527 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3529 struct elf_dyn_relocs *q;
3531 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3532 if (q->sec == p->sec)
3534 q->pc_count += p->pc_count;
3535 q->count += p->count;
3542 *pp = edir->dyn_relocs;
3545 edir->dyn_relocs = eind->dyn_relocs;
3546 eind->dyn_relocs = NULL;
3549 /* If we were called to copy over info for a weak sym, that's all.
3550 You might think dyn_relocs need not be copied over; After all,
3551 both syms will be dynamic or both non-dynamic so we're just
3552 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3553 code in ppc_elf_adjust_dynamic_symbol needs to check for
3554 dyn_relocs in read-only sections, and it does so on what is the
3556 if (eind->elf.root.type != bfd_link_hash_indirect)
3559 /* Copy over the GOT refcount entries that we may have already seen to
3560 the symbol which just became indirect. */
3561 edir->elf.got.refcount += eind->elf.got.refcount;
3562 eind->elf.got.refcount = 0;
3564 /* And plt entries. */
3565 if (eind->elf.plt.plist != NULL)
3567 if (edir->elf.plt.plist != NULL)
3569 struct plt_entry **entp;
3570 struct plt_entry *ent;
3572 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3574 struct plt_entry *dent;
3576 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3577 if (dent->sec == ent->sec && dent->addend == ent->addend)
3579 dent->plt.refcount += ent->plt.refcount;
3586 *entp = edir->elf.plt.plist;
3589 edir->elf.plt.plist = eind->elf.plt.plist;
3590 eind->elf.plt.plist = NULL;
3593 if (eind->elf.dynindx != -1)
3595 if (edir->elf.dynindx != -1)
3596 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3597 edir->elf.dynstr_index);
3598 edir->elf.dynindx = eind->elf.dynindx;
3599 edir->elf.dynstr_index = eind->elf.dynstr_index;
3600 eind->elf.dynindx = -1;
3601 eind->elf.dynstr_index = 0;
3605 /* Hook called by the linker routine which adds symbols from an object
3606 file. We use it to put .comm items in .sbss, and not .bss. */
3609 ppc_elf_add_symbol_hook (bfd *abfd,
3610 struct bfd_link_info *info,
3611 Elf_Internal_Sym *sym,
3612 const char **namep ATTRIBUTE_UNUSED,
3613 flagword *flagsp ATTRIBUTE_UNUSED,
3617 if (sym->st_shndx == SHN_COMMON
3618 && !info->relocatable
3619 && is_ppc_elf (info->output_bfd)
3620 && sym->st_size <= elf_gp_size (abfd))
3622 /* Common symbols less than or equal to -G nn bytes are automatically
3624 struct ppc_elf_link_hash_table *htab;
3626 htab = ppc_elf_hash_table (info);
3627 if (htab->sbss == NULL)
3629 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3631 if (!htab->elf.dynobj)
3632 htab->elf.dynobj = abfd;
3634 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3637 if (htab->sbss == NULL)
3642 *valp = sym->st_size;
3645 if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3646 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
3647 && (abfd->flags & DYNAMIC) == 0
3648 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3649 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
3654 /* Find a linker generated pointer with a given addend and type. */
3656 static elf_linker_section_pointers_t *
3657 elf_find_pointer_linker_section
3658 (elf_linker_section_pointers_t *linker_pointers,
3660 elf_linker_section_t *lsect)
3662 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3663 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3664 return linker_pointers;
3669 /* Allocate a pointer to live in a linker created section. */
3672 elf_allocate_pointer_linker_section (bfd *abfd,
3673 elf_linker_section_t *lsect,
3674 struct elf_link_hash_entry *h,
3675 const Elf_Internal_Rela *rel)
3677 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3678 elf_linker_section_pointers_t *linker_section_ptr;
3679 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3682 BFD_ASSERT (lsect != NULL);
3684 /* Is this a global symbol? */
3687 struct ppc_elf_link_hash_entry *eh;
3689 /* Has this symbol already been allocated? If so, our work is done. */
3690 eh = (struct ppc_elf_link_hash_entry *) h;
3691 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3696 ptr_linker_section_ptr = &eh->linker_section_pointer;
3700 BFD_ASSERT (is_ppc_elf (abfd));
3702 /* Allocation of a pointer to a local symbol. */
3703 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3705 /* Allocate a table to hold the local symbols if first time. */
3708 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3711 amt *= sizeof (elf_linker_section_pointers_t *);
3712 ptr = bfd_zalloc (abfd, amt);
3717 elf_local_ptr_offsets (abfd) = ptr;
3720 /* Has this symbol already been allocated? If so, our work is done. */
3721 if (elf_find_pointer_linker_section (ptr[r_symndx],
3726 ptr_linker_section_ptr = &ptr[r_symndx];
3729 /* Allocate space for a pointer in the linker section, and allocate
3730 a new pointer record from internal memory. */
3731 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3732 amt = sizeof (elf_linker_section_pointers_t);
3733 linker_section_ptr = bfd_alloc (abfd, amt);
3735 if (!linker_section_ptr)
3738 linker_section_ptr->next = *ptr_linker_section_ptr;
3739 linker_section_ptr->addend = rel->r_addend;
3740 linker_section_ptr->lsect = lsect;
3741 *ptr_linker_section_ptr = linker_section_ptr;
3743 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3745 linker_section_ptr->offset = lsect->section->size;
3746 lsect->section->size += 4;
3750 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3751 lsect->name, (long) linker_section_ptr->offset,
3752 (long) lsect->section->size);
3758 static struct plt_entry **
3759 update_local_sym_info (bfd *abfd,
3760 Elf_Internal_Shdr *symtab_hdr,
3761 unsigned long r_symndx,
3764 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3765 struct plt_entry **local_plt;
3766 char *local_got_tls_masks;
3768 if (local_got_refcounts == NULL)
3770 bfd_size_type size = symtab_hdr->sh_info;
3772 size *= (sizeof (*local_got_refcounts)
3773 + sizeof (*local_plt)
3774 + sizeof (*local_got_tls_masks));
3775 local_got_refcounts = bfd_zalloc (abfd, size);
3776 if (local_got_refcounts == NULL)
3778 elf_local_got_refcounts (abfd) = local_got_refcounts;
3781 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3782 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3783 local_got_tls_masks[r_symndx] |= tls_type;
3784 if (tls_type != PLT_IFUNC)
3785 local_got_refcounts[r_symndx] += 1;
3786 return local_plt + r_symndx;
3790 update_plt_info (bfd *abfd, struct plt_entry **plist,
3791 asection *sec, bfd_vma addend)
3793 struct plt_entry *ent;
3797 for (ent = *plist; ent != NULL; ent = ent->next)
3798 if (ent->sec == sec && ent->addend == addend)
3802 bfd_size_type amt = sizeof (*ent);
3803 ent = bfd_alloc (abfd, amt);
3808 ent->addend = addend;
3809 ent->plt.refcount = 0;
3812 ent->plt.refcount += 1;
3816 static struct plt_entry *
3817 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3819 struct plt_entry *ent;
3823 for (ent = *plist; ent != NULL; ent = ent->next)
3824 if (ent->sec == sec && ent->addend == addend)
3830 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3832 return (r_type == R_PPC_PLTREL24
3833 || r_type == R_PPC_LOCAL24PC
3834 || r_type == R_PPC_REL24
3835 || r_type == R_PPC_REL14
3836 || r_type == R_PPC_REL14_BRTAKEN
3837 || r_type == R_PPC_REL14_BRNTAKEN
3838 || r_type == R_PPC_ADDR24
3839 || r_type == R_PPC_ADDR14
3840 || r_type == R_PPC_ADDR14_BRTAKEN
3841 || r_type == R_PPC_ADDR14_BRNTAKEN);
3845 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3847 (*_bfd_error_handler)
3848 (_("%B: relocation %s cannot be used when making a shared object"),
3850 ppc_elf_howto_table[r_type]->name);
3851 bfd_set_error (bfd_error_bad_value);
3854 /* Look through the relocs for a section during the first phase, and
3855 allocate space in the global offset table or procedure linkage
3859 ppc_elf_check_relocs (bfd *abfd,
3860 struct bfd_link_info *info,
3862 const Elf_Internal_Rela *relocs)
3864 struct ppc_elf_link_hash_table *htab;
3865 Elf_Internal_Shdr *symtab_hdr;
3866 struct elf_link_hash_entry **sym_hashes;
3867 const Elf_Internal_Rela *rel;
3868 const Elf_Internal_Rela *rel_end;
3869 asection *got2, *sreloc;
3870 struct elf_link_hash_entry *tga;
3872 if (info->relocatable)
3875 /* Don't do anything special with non-loaded, non-alloced sections.
3876 In particular, any relocs in such sections should not affect GOT
3877 and PLT reference counting (ie. we don't allow them to create GOT
3878 or PLT entries), there's no possibility or desire to optimize TLS
3879 relocs, and there's not much point in propagating relocs to shared
3880 libs that the dynamic linker won't relocate. */
3881 if ((sec->flags & SEC_ALLOC) == 0)
3885 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3889 BFD_ASSERT (is_ppc_elf (abfd));
3891 /* Initialize howto table if not already done. */
3892 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3893 ppc_elf_howto_init ();
3895 htab = ppc_elf_hash_table (info);
3896 if (htab->glink == NULL)
3898 if (htab->elf.dynobj == NULL)
3899 htab->elf.dynobj = abfd;
3900 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3903 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3904 FALSE, FALSE, TRUE);
3905 symtab_hdr = &elf_symtab_hdr (abfd);
3906 sym_hashes = elf_sym_hashes (abfd);
3907 got2 = bfd_get_section_by_name (abfd, ".got2");
3910 rel_end = relocs + sec->reloc_count;
3911 for (rel = relocs; rel < rel_end; rel++)
3913 unsigned long r_symndx;
3914 enum elf_ppc_reloc_type r_type;
3915 struct elf_link_hash_entry *h;
3918 r_symndx = ELF32_R_SYM (rel->r_info);
3919 if (r_symndx < symtab_hdr->sh_info)
3923 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3924 while (h->root.type == bfd_link_hash_indirect
3925 || h->root.type == bfd_link_hash_warning)
3926 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3928 /* PR15323, ref flags aren't set for references in the same
3930 h->root.non_ir_ref = 1;
3933 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3934 This shows up in particular in an R_PPC_ADDR32 in the eabi
3937 && htab->got == NULL
3938 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3940 if (htab->elf.dynobj == NULL)
3941 htab->elf.dynobj = abfd;
3942 if (!ppc_elf_create_got (htab->elf.dynobj, info))
3944 BFD_ASSERT (h == htab->elf.hgot);
3948 r_type = ELF32_R_TYPE (rel->r_info);
3949 if (h == NULL && !htab->is_vxworks)
3951 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
3956 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
3958 struct plt_entry **ifunc;
3960 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
3961 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
3966 /* STT_GNU_IFUNC symbols must have a PLT entry;
3967 In a non-pie executable even when there are
3970 || is_branch_reloc (r_type))
3973 if (r_type == R_PPC_PLTREL24)
3975 ppc_elf_tdata (abfd)->makes_plt_call = 1;
3977 addend = rel->r_addend;
3979 if (!update_plt_info (abfd, ifunc, got2, addend))
3985 if (!htab->is_vxworks
3986 && is_branch_reloc (r_type)
3991 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
3992 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
3993 /* We have a new-style __tls_get_addr call with a marker
3997 /* Mark this section as having an old-style call. */
3998 sec->has_tls_get_addr_call = 1;
4005 /* These special tls relocs tie a call to __tls_get_addr with
4006 its parameter symbol. */
4009 case R_PPC_GOT_TLSLD16:
4010 case R_PPC_GOT_TLSLD16_LO:
4011 case R_PPC_GOT_TLSLD16_HI:
4012 case R_PPC_GOT_TLSLD16_HA:
4013 tls_type = TLS_TLS | TLS_LD;
4016 case R_PPC_GOT_TLSGD16:
4017 case R_PPC_GOT_TLSGD16_LO:
4018 case R_PPC_GOT_TLSGD16_HI:
4019 case R_PPC_GOT_TLSGD16_HA:
4020 tls_type = TLS_TLS | TLS_GD;
4023 case R_PPC_GOT_TPREL16:
4024 case R_PPC_GOT_TPREL16_LO:
4025 case R_PPC_GOT_TPREL16_HI:
4026 case R_PPC_GOT_TPREL16_HA:
4028 info->flags |= DF_STATIC_TLS;
4029 tls_type = TLS_TLS | TLS_TPREL;
4032 case R_PPC_GOT_DTPREL16:
4033 case R_PPC_GOT_DTPREL16_LO:
4034 case R_PPC_GOT_DTPREL16_HI:
4035 case R_PPC_GOT_DTPREL16_HA:
4036 tls_type = TLS_TLS | TLS_DTPREL;
4038 sec->has_tls_reloc = 1;
4041 /* GOT16 relocations */
4043 case R_PPC_GOT16_LO:
4044 case R_PPC_GOT16_HI:
4045 case R_PPC_GOT16_HA:
4046 /* This symbol requires a global offset table entry. */
4047 if (htab->got == NULL)
4049 if (htab->elf.dynobj == NULL)
4050 htab->elf.dynobj = abfd;
4051 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4056 h->got.refcount += 1;
4057 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4060 /* This is a global offset table entry for a local symbol. */
4061 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4064 /* We may also need a plt entry if the symbol turns out to be
4066 if (h != NULL && !info->shared)
4068 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4073 /* Indirect .sdata relocation. */
4074 case R_PPC_EMB_SDAI16:
4077 bad_shared_reloc (abfd, r_type);
4080 htab->sdata[0].sym->ref_regular = 1;
4081 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4086 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4087 h->non_got_ref = TRUE;
4091 /* Indirect .sdata2 relocation. */
4092 case R_PPC_EMB_SDA2I16:
4095 bad_shared_reloc (abfd, r_type);
4098 htab->sdata[1].sym->ref_regular = 1;
4099 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4104 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4105 h->non_got_ref = TRUE;
4109 case R_PPC_SDAREL16:
4110 htab->sdata[0].sym->ref_regular = 1;
4113 case R_PPC_VLE_SDAREL_LO16A:
4114 case R_PPC_VLE_SDAREL_LO16D:
4115 case R_PPC_VLE_SDAREL_HI16A:
4116 case R_PPC_VLE_SDAREL_HI16D:
4117 case R_PPC_VLE_SDAREL_HA16A:
4118 case R_PPC_VLE_SDAREL_HA16D:
4121 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4122 h->non_got_ref = TRUE;
4126 case R_PPC_VLE_REL8:
4127 case R_PPC_VLE_REL15:
4128 case R_PPC_VLE_REL24:
4129 case R_PPC_VLE_LO16A:
4130 case R_PPC_VLE_LO16D:
4131 case R_PPC_VLE_HI16A:
4132 case R_PPC_VLE_HI16D:
4133 case R_PPC_VLE_HA16A:
4134 case R_PPC_VLE_HA16D:
4137 case R_PPC_EMB_SDA2REL:
4140 bad_shared_reloc (abfd, r_type);
4143 htab->sdata[1].sym->ref_regular = 1;
4146 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4147 h->non_got_ref = TRUE;
4151 case R_PPC_VLE_SDA21_LO:
4152 case R_PPC_VLE_SDA21:
4153 case R_PPC_EMB_SDA21:
4154 case R_PPC_EMB_RELSDA:
4157 bad_shared_reloc (abfd, r_type);
4162 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4163 h->non_got_ref = TRUE;
4167 case R_PPC_EMB_NADDR32:
4168 case R_PPC_EMB_NADDR16:
4169 case R_PPC_EMB_NADDR16_LO:
4170 case R_PPC_EMB_NADDR16_HI:
4171 case R_PPC_EMB_NADDR16_HA:
4174 bad_shared_reloc (abfd, r_type);
4178 h->non_got_ref = TRUE;
4181 case R_PPC_PLTREL24:
4186 case R_PPC_PLTREL32:
4187 case R_PPC_PLT16_LO:
4188 case R_PPC_PLT16_HI:
4189 case R_PPC_PLT16_HA:
4191 fprintf (stderr, "Reloc requires a PLT entry\n");
4193 /* This symbol requires a procedure linkage table entry. We
4194 actually build the entry in finish_dynamic_symbol,
4195 because this might be a case of linking PIC code without
4196 linking in any dynamic objects, in which case we don't
4197 need to generate a procedure linkage table after all. */
4201 /* It does not make sense to have a procedure linkage
4202 table entry for a local symbol. */
4203 info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
4204 abfd, sec, rel->r_offset,
4205 ppc_elf_howto_table[r_type]->name);
4206 bfd_set_error (bfd_error_bad_value);
4213 if (r_type == R_PPC_PLTREL24)
4215 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4217 addend = rel->r_addend;
4220 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4225 /* The following relocations don't need to propagate the
4226 relocation if linking a shared object since they are
4227 section relative. */
4229 case R_PPC_SECTOFF_LO:
4230 case R_PPC_SECTOFF_HI:
4231 case R_PPC_SECTOFF_HA:
4232 case R_PPC_DTPREL16:
4233 case R_PPC_DTPREL16_LO:
4234 case R_PPC_DTPREL16_HI:
4235 case R_PPC_DTPREL16_HA:
4240 case R_PPC_REL16_LO:
4241 case R_PPC_REL16_HI:
4242 case R_PPC_REL16_HA:
4243 ppc_elf_tdata (abfd)->has_rel16 = 1;
4246 /* These are just markers. */
4248 case R_PPC_EMB_MRKREF:
4252 case R_PPC_RELAX_PLT:
4253 case R_PPC_RELAX_PLTREL24:
4256 /* These should only appear in dynamic objects. */
4258 case R_PPC_GLOB_DAT:
4259 case R_PPC_JMP_SLOT:
4260 case R_PPC_RELATIVE:
4261 case R_PPC_IRELATIVE:
4264 /* These aren't handled yet. We'll report an error later. */
4266 case R_PPC_EMB_RELSEC16:
4267 case R_PPC_EMB_RELST_LO:
4268 case R_PPC_EMB_RELST_HI:
4269 case R_PPC_EMB_RELST_HA:
4270 case R_PPC_EMB_BIT_FLD:
4273 /* This refers only to functions defined in the shared library. */
4274 case R_PPC_LOCAL24PC:
4275 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4277 htab->plt_type = PLT_OLD;
4278 htab->old_bfd = abfd;
4280 if (h != NULL && h->type == STT_GNU_IFUNC)
4284 info->callbacks->einfo (_("%P: %H: @local call to ifunc %s\n"),
4285 abfd, sec, rel->r_offset,
4286 h->root.root.string);
4287 bfd_set_error (bfd_error_bad_value);
4291 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4296 /* This relocation describes the C++ object vtable hierarchy.
4297 Reconstruct it for later use during GC. */
4298 case R_PPC_GNU_VTINHERIT:
4299 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4303 /* This relocation describes which C++ vtable entries are actually
4304 used. Record for later use during GC. */
4305 case R_PPC_GNU_VTENTRY:
4306 BFD_ASSERT (h != NULL);
4308 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4312 /* We shouldn't really be seeing these. */
4315 case R_PPC_TPREL16_LO:
4316 case R_PPC_TPREL16_HI:
4317 case R_PPC_TPREL16_HA:
4319 info->flags |= DF_STATIC_TLS;
4323 case R_PPC_DTPMOD32:
4324 case R_PPC_DTPREL32:
4330 && (sec->flags & SEC_CODE) != 0
4332 && htab->plt_type == PLT_UNSET)
4334 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4335 the start of a function, which assembles to a REL32
4336 reference to .got2. If we detect one of these, then
4337 force the old PLT layout because the linker cannot
4338 reliably deduce the GOT pointer value needed for
4341 Elf_Internal_Sym *isym;
4343 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4348 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4351 htab->plt_type = PLT_OLD;
4352 htab->old_bfd = abfd;
4355 if (h == NULL || h == htab->elf.hgot)
4361 case R_PPC_ADDR16_LO:
4362 case R_PPC_ADDR16_HI:
4363 case R_PPC_ADDR16_HA:
4366 if (h != NULL && !info->shared)
4368 /* We may need a plt entry if the symbol turns out to be
4369 a function defined in a dynamic object. */
4370 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4373 /* We may need a copy reloc too. */
4375 h->pointer_equality_needed = 1;
4381 case R_PPC_REL14_BRTAKEN:
4382 case R_PPC_REL14_BRNTAKEN:
4385 if (h == htab->elf.hgot)
4387 if (htab->plt_type == PLT_UNSET)
4389 htab->plt_type = PLT_OLD;
4390 htab->old_bfd = abfd;
4398 case R_PPC_ADDR14_BRTAKEN:
4399 case R_PPC_ADDR14_BRNTAKEN:
4400 if (h != NULL && !info->shared)
4402 /* We may need a plt entry if the symbol turns out to be
4403 a function defined in a dynamic object. */
4405 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4411 /* If we are creating a shared library, and this is a reloc
4412 against a global symbol, or a non PC relative reloc
4413 against a local symbol, then we need to copy the reloc
4414 into the shared library. However, if we are linking with
4415 -Bsymbolic, we do not need to copy a reloc against a
4416 global symbol which is defined in an object we are
4417 including in the link (i.e., DEF_REGULAR is set). At
4418 this point we have not seen all the input files, so it is
4419 possible that DEF_REGULAR is not set now but will be set
4420 later (it is never cleared). In case of a weak definition,
4421 DEF_REGULAR may be cleared later by a strong definition in
4422 a shared library. We account for that possibility below by
4423 storing information in the dyn_relocs field of the hash
4424 table entry. A similar situation occurs when creating
4425 shared libraries and symbol visibility changes render the
4428 If on the other hand, we are creating an executable, we
4429 may need to keep relocations for symbols satisfied by a
4430 dynamic library if we manage to avoid copy relocs for the
4433 && (must_be_dyn_reloc (info, r_type)
4435 && (!SYMBOLIC_BIND (info, h)
4436 || h->root.type == bfd_link_hash_defweak
4437 || !h->def_regular))))
4438 || (ELIMINATE_COPY_RELOCS
4441 && (h->root.type == bfd_link_hash_defweak
4442 || !h->def_regular)))
4446 "ppc_elf_check_relocs needs to "
4447 "create relocation for %s\n",
4448 (h && h->root.root.string
4449 ? h->root.root.string : "<unknown>"));
4453 if (htab->elf.dynobj == NULL)
4454 htab->elf.dynobj = abfd;
4456 sreloc = _bfd_elf_make_dynamic_reloc_section
4457 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4463 /* If this is a global symbol, we count the number of
4464 relocations we need for this symbol. */
4467 struct elf_dyn_relocs *p;
4468 struct elf_dyn_relocs **rel_head;
4470 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4472 if (p == NULL || p->sec != sec)
4474 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4477 p->next = *rel_head;
4484 if (!must_be_dyn_reloc (info, r_type))
4489 /* Track dynamic relocs needed for local syms too.
4490 We really need local syms available to do this
4492 struct ppc_dyn_relocs *p;
4493 struct ppc_dyn_relocs **rel_head;
4494 bfd_boolean is_ifunc;
4497 Elf_Internal_Sym *isym;
4499 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4504 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4508 vpp = &elf_section_data (s)->local_dynrel;
4509 rel_head = (struct ppc_dyn_relocs **) vpp;
4510 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4512 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4514 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4516 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4519 p->next = *rel_head;
4522 p->ifunc = is_ifunc;
4537 /* Merge object attributes from IBFD into OBFD. Raise an error if
4538 there are conflicting attributes. */
4540 ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
4542 obj_attribute *in_attr, *in_attrs;
4543 obj_attribute *out_attr, *out_attrs;
4545 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4547 /* This is the first object. Copy the attributes. */
4548 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4550 /* Use the Tag_null value to indicate the attributes have been
4552 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4557 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4558 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4560 /* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
4561 non-conflicting ones. */
4562 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4563 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4564 if (in_attr->i != out_attr->i)
4567 if (out_attr->i == 0)
4568 out_attr->i = in_attr->i;
4569 else if (in_attr->i == 0)
4571 else if (out_attr->i == 1 && in_attr->i == 2)
4573 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4574 else if (out_attr->i == 1 && in_attr->i == 3)
4576 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4578 else if (out_attr->i == 3 && in_attr->i == 1)
4580 (_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
4582 else if (out_attr->i == 3 && in_attr->i == 2)
4584 (_("Warning: %B uses soft float, %B uses single-precision hard float"),
4586 else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
4588 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4589 else if (in_attr->i > 3)
4591 (_("Warning: %B uses unknown floating point ABI %d"), ibfd,
4595 (_("Warning: %B uses unknown floating point ABI %d"), obfd,
4599 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4600 merge non-conflicting ones. */
4601 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4602 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4603 if (in_attr->i != out_attr->i)
4605 const char *in_abi = NULL, *out_abi = NULL;
4609 case 1: in_abi = "generic"; break;
4610 case 2: in_abi = "AltiVec"; break;
4611 case 3: in_abi = "SPE"; break;
4614 switch (out_attr->i)
4616 case 1: out_abi = "generic"; break;
4617 case 2: out_abi = "AltiVec"; break;
4618 case 3: out_abi = "SPE"; break;
4622 if (out_attr->i == 0)
4623 out_attr->i = in_attr->i;
4624 else if (in_attr->i == 0)
4626 /* For now, allow generic to transition to AltiVec or SPE
4627 without a warning. If GCC marked files with their stack
4628 alignment and used don't-care markings for files which are
4629 not affected by the vector ABI, we could warn about this
4631 else if (out_attr->i == 1)
4632 out_attr->i = in_attr->i;
4633 else if (in_attr->i == 1)
4635 else if (in_abi == NULL)
4637 (_("Warning: %B uses unknown vector ABI %d"), ibfd,
4639 else if (out_abi == NULL)
4641 (_("Warning: %B uses unknown vector ABI %d"), obfd,
4645 (_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
4646 ibfd, obfd, in_abi, out_abi);
4649 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4650 and merge non-conflicting ones. */
4651 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4652 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4653 if (in_attr->i != out_attr->i)
4656 if (out_attr->i == 0)
4657 out_attr->i = in_attr->i;
4658 else if (in_attr->i == 0)
4660 else if (out_attr->i == 1 && in_attr->i == 2)
4662 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
4663 else if (out_attr->i == 2 && in_attr->i == 1)
4665 (_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
4666 else if (in_attr->i > 2)
4668 (_("Warning: %B uses unknown small structure return convention %d"), ibfd,
4672 (_("Warning: %B uses unknown small structure return convention %d"), obfd,
4676 /* Merge Tag_compatibility attributes and any common GNU ones. */
4677 _bfd_elf_merge_object_attributes (ibfd, obfd);
4682 /* Merge backend specific data from an object file to the output
4683 object file when linking. */
4686 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4692 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4695 /* Check if we have the same endianness. */
4696 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4699 if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
4702 new_flags = elf_elfheader (ibfd)->e_flags;
4703 old_flags = elf_elfheader (obfd)->e_flags;
4704 if (!elf_flags_init (obfd))
4706 /* First call, no flags set. */
4707 elf_flags_init (obfd) = TRUE;
4708 elf_elfheader (obfd)->e_flags = new_flags;
4711 /* Compatible flags are ok. */
4712 else if (new_flags == old_flags)
4715 /* Incompatible flags. */
4718 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4719 to be linked with either. */
4721 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4722 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4725 (*_bfd_error_handler)
4726 (_("%B: compiled with -mrelocatable and linked with "
4727 "modules compiled normally"), ibfd);
4729 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4730 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4733 (*_bfd_error_handler)
4734 (_("%B: compiled normally and linked with "
4735 "modules compiled with -mrelocatable"), ibfd);
4738 /* The output is -mrelocatable-lib iff both the input files are. */
4739 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4740 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4742 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4743 but each input file is either -mrelocatable or -mrelocatable-lib. */
4744 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4745 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4746 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4747 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4749 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4750 any module uses it. */
4751 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4753 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4754 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4756 /* Warn about any other mismatches. */
4757 if (new_flags != old_flags)
4760 (*_bfd_error_handler)
4761 (_("%B: uses different e_flags (0x%lx) fields "
4762 "than previous modules (0x%lx)"),
4763 ibfd, (long) new_flags, (long) old_flags);
4768 bfd_set_error (bfd_error_bad_value);
4777 ppc_elf_vle_split16 (bfd *output_bfd, bfd_byte *loc,
4779 split16_format_type split16_format)
4782 unsigned int insn, top5;
4784 insn = bfd_get_32 (output_bfd, loc);
4785 top5 = value & 0xf800;
4786 top5 = top5 << (split16_format == split16a_type ? 9 : 5);
4788 insn |= value & 0x7ff;
4789 bfd_put_32 (output_bfd, insn, loc);
4793 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4794 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4796 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4797 struct bfd_link_info *info)
4799 struct ppc_elf_link_hash_table *htab;
4802 htab = ppc_elf_hash_table (info);
4804 if (htab->plt_type == PLT_UNSET)
4806 struct elf_link_hash_entry *h;
4808 if (htab->params->plt_style == PLT_OLD)
4809 htab->plt_type = PLT_OLD;
4810 else if (info->shared
4811 && htab->elf.dynamic_sections_created
4812 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4813 FALSE, FALSE, TRUE)) != NULL
4814 && (h->type == STT_FUNC
4817 && !(SYMBOL_CALLS_LOCAL (info, h)
4818 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4819 && h->root.type == bfd_link_hash_undefweak)))
4821 /* Profiling of shared libs (and pies) is not supported with
4822 secure plt, because ppc32 does profiling before a
4823 function prologue and a secure plt pic call stubs needs
4824 r30 to be set up. */
4825 htab->plt_type = PLT_OLD;
4830 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4832 /* Look through the reloc flags left by ppc_elf_check_relocs.
4833 Use the old style bss plt if a file makes plt calls
4834 without using the new relocs, and if ld isn't given
4835 --secure-plt and we never see REL16 relocs. */
4836 if (plt_type == PLT_UNSET)
4838 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4839 if (is_ppc_elf (ibfd))
4841 if (ppc_elf_tdata (ibfd)->has_rel16)
4843 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4846 htab->old_bfd = ibfd;
4850 htab->plt_type = plt_type;
4853 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
4855 if (htab->old_bfd != NULL)
4856 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
4859 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
4862 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
4864 if (htab->plt_type == PLT_NEW)
4866 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
4867 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4869 /* The new PLT is a loaded section. */
4870 if (htab->plt != NULL
4871 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
4874 /* The new GOT is not executable. */
4875 if (htab->got != NULL
4876 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
4881 /* Stop an unused .glink section from affecting .text alignment. */
4882 if (htab->glink != NULL
4883 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
4886 return htab->plt_type == PLT_NEW;
4889 /* Return the section that should be marked against GC for a given
4893 ppc_elf_gc_mark_hook (asection *sec,
4894 struct bfd_link_info *info,
4895 Elf_Internal_Rela *rel,
4896 struct elf_link_hash_entry *h,
4897 Elf_Internal_Sym *sym)
4900 switch (ELF32_R_TYPE (rel->r_info))
4902 case R_PPC_GNU_VTINHERIT:
4903 case R_PPC_GNU_VTENTRY:
4907 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
4910 /* Update the got, plt and dynamic reloc reference counts for the
4911 section being removed. */
4914 ppc_elf_gc_sweep_hook (bfd *abfd,
4915 struct bfd_link_info *info,
4917 const Elf_Internal_Rela *relocs)
4919 struct ppc_elf_link_hash_table *htab;
4920 Elf_Internal_Shdr *symtab_hdr;
4921 struct elf_link_hash_entry **sym_hashes;
4922 bfd_signed_vma *local_got_refcounts;
4923 const Elf_Internal_Rela *rel, *relend;
4926 if (info->relocatable)
4929 if ((sec->flags & SEC_ALLOC) == 0)
4932 elf_section_data (sec)->local_dynrel = NULL;
4934 htab = ppc_elf_hash_table (info);
4935 symtab_hdr = &elf_symtab_hdr (abfd);
4936 sym_hashes = elf_sym_hashes (abfd);
4937 local_got_refcounts = elf_local_got_refcounts (abfd);
4938 got2 = bfd_get_section_by_name (abfd, ".got2");
4940 relend = relocs + sec->reloc_count;
4941 for (rel = relocs; rel < relend; rel++)
4943 unsigned long r_symndx;
4944 enum elf_ppc_reloc_type r_type;
4945 struct elf_link_hash_entry *h = NULL;
4947 r_symndx = ELF32_R_SYM (rel->r_info);
4948 if (r_symndx >= symtab_hdr->sh_info)
4950 struct elf_dyn_relocs **pp, *p;
4951 struct ppc_elf_link_hash_entry *eh;
4953 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4954 while (h->root.type == bfd_link_hash_indirect
4955 || h->root.type == bfd_link_hash_warning)
4956 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4957 eh = (struct ppc_elf_link_hash_entry *) h;
4959 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4962 /* Everything must go for SEC. */
4968 r_type = ELF32_R_TYPE (rel->r_info);
4969 if (!htab->is_vxworks
4971 && local_got_refcounts != NULL
4973 || is_branch_reloc (r_type)))
4975 struct plt_entry **local_plt = (struct plt_entry **)
4976 (local_got_refcounts + symtab_hdr->sh_info);
4977 char *local_got_tls_masks = (char *)
4978 (local_plt + symtab_hdr->sh_info);
4979 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
4981 struct plt_entry **ifunc = local_plt + r_symndx;
4983 struct plt_entry *ent;
4985 if (r_type == R_PPC_PLTREL24 && info->shared)
4986 addend = rel->r_addend;
4987 ent = find_plt_ent (ifunc, got2, addend);
4988 if (ent->plt.refcount > 0)
4989 ent->plt.refcount -= 1;
4996 case R_PPC_GOT_TLSLD16:
4997 case R_PPC_GOT_TLSLD16_LO:
4998 case R_PPC_GOT_TLSLD16_HI:
4999 case R_PPC_GOT_TLSLD16_HA:
5000 case R_PPC_GOT_TLSGD16:
5001 case R_PPC_GOT_TLSGD16_LO:
5002 case R_PPC_GOT_TLSGD16_HI:
5003 case R_PPC_GOT_TLSGD16_HA:
5004 case R_PPC_GOT_TPREL16:
5005 case R_PPC_GOT_TPREL16_LO:
5006 case R_PPC_GOT_TPREL16_HI:
5007 case R_PPC_GOT_TPREL16_HA:
5008 case R_PPC_GOT_DTPREL16:
5009 case R_PPC_GOT_DTPREL16_LO:
5010 case R_PPC_GOT_DTPREL16_HI:
5011 case R_PPC_GOT_DTPREL16_HA:
5013 case R_PPC_GOT16_LO:
5014 case R_PPC_GOT16_HI:
5015 case R_PPC_GOT16_HA:
5018 if (h->got.refcount > 0)
5022 struct plt_entry *ent;
5024 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5025 if (ent != NULL && ent->plt.refcount > 0)
5026 ent->plt.refcount -= 1;
5029 else if (local_got_refcounts != NULL)
5031 if (local_got_refcounts[r_symndx] > 0)
5032 local_got_refcounts[r_symndx]--;
5038 case R_PPC_REL14_BRTAKEN:
5039 case R_PPC_REL14_BRNTAKEN:
5041 if (h == NULL || h == htab->elf.hgot)
5048 case R_PPC_ADDR16_LO:
5049 case R_PPC_ADDR16_HI:
5050 case R_PPC_ADDR16_HA:
5052 case R_PPC_ADDR14_BRTAKEN:
5053 case R_PPC_ADDR14_BRNTAKEN:
5060 case R_PPC_PLTREL24:
5061 case R_PPC_PLTREL32:
5062 case R_PPC_PLT16_LO:
5063 case R_PPC_PLT16_HI:
5064 case R_PPC_PLT16_HA:
5068 struct plt_entry *ent;
5070 if (r_type == R_PPC_PLTREL24 && info->shared)
5071 addend = rel->r_addend;
5072 ent = find_plt_ent (&h->plt.plist, got2, addend);
5073 if (ent != NULL && ent->plt.refcount > 0)
5074 ent->plt.refcount -= 1;
5085 /* Set plt output section type, htab->tls_get_addr, and call the
5086 generic ELF tls_setup function. */
5089 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5091 struct ppc_elf_link_hash_table *htab;
5093 htab = ppc_elf_hash_table (info);
5094 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5095 FALSE, FALSE, TRUE);
5096 if (!htab->params->no_tls_get_addr_opt)
5098 struct elf_link_hash_entry *opt, *tga;
5099 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5100 FALSE, FALSE, TRUE);
5102 && (opt->root.type == bfd_link_hash_defined
5103 || opt->root.type == bfd_link_hash_defweak))
5105 /* If glibc supports an optimized __tls_get_addr call stub,
5106 signalled by the presence of __tls_get_addr_opt, and we'll
5107 be calling __tls_get_addr via a plt call stub, then
5108 make __tls_get_addr point to __tls_get_addr_opt. */
5109 tga = htab->tls_get_addr;
5110 if (htab->elf.dynamic_sections_created
5112 && (tga->type == STT_FUNC
5114 && !(SYMBOL_CALLS_LOCAL (info, tga)
5115 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5116 && tga->root.type == bfd_link_hash_undefweak)))
5118 struct plt_entry *ent;
5119 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5120 if (ent->plt.refcount > 0)
5124 tga->root.type = bfd_link_hash_indirect;
5125 tga->root.u.i.link = &opt->root;
5126 ppc_elf_copy_indirect_symbol (info, opt, tga);
5127 if (opt->dynindx != -1)
5129 /* Use __tls_get_addr_opt in dynamic relocations. */
5131 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5133 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5136 htab->tls_get_addr = opt;
5141 htab->params->no_tls_get_addr_opt = TRUE;
5143 if (htab->plt_type == PLT_NEW
5144 && htab->plt != NULL
5145 && htab->plt->output_section != NULL)
5147 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
5148 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
5151 return _bfd_elf_tls_setup (obfd, info);
5154 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5158 branch_reloc_hash_match (const bfd *ibfd,
5159 const Elf_Internal_Rela *rel,
5160 const struct elf_link_hash_entry *hash)
5162 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5163 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5164 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5166 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5168 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5169 struct elf_link_hash_entry *h;
5171 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5172 while (h->root.type == bfd_link_hash_indirect
5173 || h->root.type == bfd_link_hash_warning)
5174 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5181 /* Run through all the TLS relocs looking for optimization
5185 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5186 struct bfd_link_info *info)
5190 struct ppc_elf_link_hash_table *htab;
5193 if (info->relocatable || !info->executable)
5196 htab = ppc_elf_hash_table (info);
5200 /* Make two passes through the relocs. First time check that tls
5201 relocs involved in setting up a tls_get_addr call are indeed
5202 followed by such a call. If they are not, don't do any tls
5203 optimization. On the second pass twiddle tls_mask flags to
5204 notify relocate_section that optimization can be done, and
5205 adjust got and plt refcounts. */
5206 for (pass = 0; pass < 2; ++pass)
5207 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5209 Elf_Internal_Sym *locsyms = NULL;
5210 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5211 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5213 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5214 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5216 Elf_Internal_Rela *relstart, *rel, *relend;
5217 int expecting_tls_get_addr = 0;
5219 /* Read the relocations. */
5220 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5222 if (relstart == NULL)
5225 relend = relstart + sec->reloc_count;
5226 for (rel = relstart; rel < relend; rel++)
5228 enum elf_ppc_reloc_type r_type;
5229 unsigned long r_symndx;
5230 struct elf_link_hash_entry *h = NULL;
5232 char tls_set, tls_clear;
5233 bfd_boolean is_local;
5234 bfd_signed_vma *got_count;
5236 r_symndx = ELF32_R_SYM (rel->r_info);
5237 if (r_symndx >= symtab_hdr->sh_info)
5239 struct elf_link_hash_entry **sym_hashes;
5241 sym_hashes = elf_sym_hashes (ibfd);
5242 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5243 while (h->root.type == bfd_link_hash_indirect
5244 || h->root.type == bfd_link_hash_warning)
5245 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5253 r_type = ELF32_R_TYPE (rel->r_info);
5254 /* If this section has old-style __tls_get_addr calls
5255 without marker relocs, then check that each
5256 __tls_get_addr call reloc is preceded by a reloc
5257 that conceivably belongs to the __tls_get_addr arg
5258 setup insn. If we don't find matching arg setup
5259 relocs, don't do any tls optimization. */
5261 && sec->has_tls_get_addr_call
5263 && h == htab->tls_get_addr
5264 && !expecting_tls_get_addr
5265 && is_branch_reloc (r_type))
5267 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5268 "TLS optimization disabled\n",
5269 ibfd, sec, rel->r_offset);
5270 if (elf_section_data (sec)->relocs != relstart)
5275 expecting_tls_get_addr = 0;
5278 case R_PPC_GOT_TLSLD16:
5279 case R_PPC_GOT_TLSLD16_LO:
5280 expecting_tls_get_addr = 1;
5283 case R_PPC_GOT_TLSLD16_HI:
5284 case R_PPC_GOT_TLSLD16_HA:
5285 /* These relocs should never be against a symbol
5286 defined in a shared lib. Leave them alone if
5287 that turns out to be the case. */
5296 case R_PPC_GOT_TLSGD16:
5297 case R_PPC_GOT_TLSGD16_LO:
5298 expecting_tls_get_addr = 1;
5301 case R_PPC_GOT_TLSGD16_HI:
5302 case R_PPC_GOT_TLSGD16_HA:
5308 tls_set = TLS_TLS | TLS_TPRELGD;
5312 case R_PPC_GOT_TPREL16:
5313 case R_PPC_GOT_TPREL16_LO:
5314 case R_PPC_GOT_TPREL16_HI:
5315 case R_PPC_GOT_TPREL16_HA:
5320 tls_clear = TLS_TPREL;
5328 expecting_tls_get_addr = 2;
5339 if (!expecting_tls_get_addr
5340 || (expecting_tls_get_addr == 1
5341 && !sec->has_tls_get_addr_call))
5344 if (rel + 1 < relend
5345 && branch_reloc_hash_match (ibfd, rel + 1,
5346 htab->tls_get_addr))
5349 /* Uh oh, we didn't find the expected call. We
5350 could just mark this symbol to exclude it
5351 from tls optimization but it's safer to skip
5352 the entire optimization. */
5353 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5354 "TLS optimization disabled\n"),
5355 ibfd, sec, rel->r_offset);
5356 if (elf_section_data (sec)->relocs != relstart)
5361 if (expecting_tls_get_addr)
5363 struct plt_entry *ent;
5367 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5368 addend = rel[1].r_addend;
5369 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5371 if (ent != NULL && ent->plt.refcount > 0)
5372 ent->plt.refcount -= 1;
5374 if (expecting_tls_get_addr == 2)
5380 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5381 got_count = &h->got.refcount;
5385 bfd_signed_vma *lgot_refs;
5386 struct plt_entry **local_plt;
5389 if (locsyms == NULL)
5391 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5392 if (locsyms == NULL)
5393 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5394 symtab_hdr->sh_info,
5395 0, NULL, NULL, NULL);
5396 if (locsyms == NULL)
5398 if (elf_section_data (sec)->relocs != relstart)
5403 lgot_refs = elf_local_got_refcounts (ibfd);
5404 if (lgot_refs == NULL)
5406 local_plt = (struct plt_entry **)
5407 (lgot_refs + symtab_hdr->sh_info);
5408 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5409 tls_mask = &lgot_masks[r_symndx];
5410 got_count = &lgot_refs[r_symndx];
5415 /* We managed to get rid of a got entry. */
5420 *tls_mask |= tls_set;
5421 *tls_mask &= ~tls_clear;
5424 if (elf_section_data (sec)->relocs != relstart)
5429 && (symtab_hdr->contents != (unsigned char *) locsyms))
5431 if (!info->keep_memory)
5434 symtab_hdr->contents = (unsigned char *) locsyms;
5440 /* Return true if we have dynamic relocs that apply to read-only sections. */
5443 readonly_dynrelocs (struct elf_link_hash_entry *h)
5445 struct elf_dyn_relocs *p;
5447 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5449 asection *s = p->sec->output_section;
5452 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5453 == (SEC_READONLY | SEC_ALLOC)))
5459 /* Adjust a symbol defined by a dynamic object and referenced by a
5460 regular object. The current definition is in some section of the
5461 dynamic object, but we're not including those sections. We have to
5462 change the definition to something the rest of the link can
5466 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5467 struct elf_link_hash_entry *h)
5469 struct ppc_elf_link_hash_table *htab;
5473 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5474 h->root.root.string);
5477 /* Make sure we know what is going on here. */
5478 htab = ppc_elf_hash_table (info);
5479 BFD_ASSERT (htab->elf.dynobj != NULL
5481 || h->type == STT_GNU_IFUNC
5482 || h->u.weakdef != NULL
5485 && !h->def_regular)));
5487 /* Deal with function syms. */
5488 if (h->type == STT_FUNC
5489 || h->type == STT_GNU_IFUNC
5492 /* Clear procedure linkage table information for any symbol that
5493 won't need a .plt entry. */
5494 struct plt_entry *ent;
5495 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5496 if (ent->plt.refcount > 0)
5499 || (h->type != STT_GNU_IFUNC
5500 && (SYMBOL_CALLS_LOCAL (info, h)
5501 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5502 && h->root.type == bfd_link_hash_undefweak))))
5504 /* A PLT entry is not required/allowed when:
5506 1. We are not using ld.so; because then the PLT entry
5507 can't be set up, so we can't use one. In this case,
5508 ppc_elf_adjust_dynamic_symbol won't even be called.
5510 2. GC has rendered the entry unused.
5512 3. We know for certain that a call to this symbol
5513 will go to this object, or will remain undefined. */
5514 h->plt.plist = NULL;
5516 h->pointer_equality_needed = 0;
5520 /* Taking a function's address in a read/write section
5521 doesn't require us to define the function symbol in the
5522 executable on a plt call stub. A dynamic reloc can
5524 if (h->pointer_equality_needed
5525 && h->type != STT_GNU_IFUNC
5526 && !htab->is_vxworks
5527 && !ppc_elf_hash_entry (h)->has_sda_refs
5528 && !readonly_dynrelocs (h))
5530 h->pointer_equality_needed = 0;
5534 /* After adjust_dynamic_symbol, non_got_ref set in the
5535 non-shared case means that we have allocated space in
5536 .dynbss for the symbol and thus dyn_relocs for this
5537 symbol should be discarded.
5538 If we get here we know we are making a PLT entry for this
5539 symbol, and in an executable we'd normally resolve
5540 relocations against this symbol to the PLT entry. Allow
5541 dynamic relocs if the reference is weak, and the dynamic
5542 relocs will not cause text relocation. */
5543 else if (!h->ref_regular_nonweak
5545 && h->type != STT_GNU_IFUNC
5546 && !htab->is_vxworks
5547 && !ppc_elf_hash_entry (h)->has_sda_refs
5548 && !readonly_dynrelocs (h))
5554 h->plt.plist = NULL;
5556 /* If this is a weak symbol, and there is a real definition, the
5557 processor independent code will have arranged for us to see the
5558 real definition first, and we can just use the same value. */
5559 if (h->u.weakdef != NULL)
5561 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5562 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5563 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5564 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5565 if (ELIMINATE_COPY_RELOCS)
5566 h->non_got_ref = h->u.weakdef->non_got_ref;
5570 /* This is a reference to a symbol defined by a dynamic object which
5571 is not a function. */
5573 /* If we are creating a shared library, we must presume that the
5574 only references to the symbol are via the global offset table.
5575 For such cases we need not do anything here; the relocations will
5576 be handled correctly by relocate_section. */
5580 /* If there are no references to this symbol that do not use the
5581 GOT, we don't need to generate a copy reloc. */
5582 if (!h->non_got_ref)
5585 /* If we didn't find any dynamic relocs in read-only sections, then
5586 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5587 We can't do this if there are any small data relocations. This
5588 doesn't work on VxWorks, where we can not have dynamic
5589 relocations (other than copy and jump slot relocations) in an
5591 if (ELIMINATE_COPY_RELOCS
5592 && !ppc_elf_hash_entry (h)->has_sda_refs
5593 && !htab->is_vxworks
5595 && !readonly_dynrelocs (h))
5601 /* We must allocate the symbol in our .dynbss section, which will
5602 become part of the .bss section of the executable. There will be
5603 an entry for this symbol in the .dynsym section. The dynamic
5604 object will contain position independent code, so all references
5605 from the dynamic object to this symbol will go through the global
5606 offset table. The dynamic linker will use the .dynsym entry to
5607 determine the address it must put in the global offset table, so
5608 both the dynamic object and the regular object will refer to the
5609 same memory location for the variable.
5611 Of course, if the symbol is referenced using SDAREL relocs, we
5612 must instead allocate it in .sbss. */
5614 if (ppc_elf_hash_entry (h)->has_sda_refs)
5618 BFD_ASSERT (s != NULL);
5620 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5621 copy the initial value out of the dynamic object and into the
5622 runtime process image. We need to remember the offset into the
5623 .rela.bss section we are going to use. */
5624 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5628 if (ppc_elf_hash_entry (h)->has_sda_refs)
5629 srel = htab->relsbss;
5631 srel = htab->relbss;
5632 BFD_ASSERT (srel != NULL);
5633 srel->size += sizeof (Elf32_External_Rela);
5637 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5640 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5641 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5642 specifying the addend on the plt relocation. For -fpic code, the sym
5643 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5644 xxxxxxxx.got2.plt_pic32.<callee>. */
5647 add_stub_sym (struct plt_entry *ent,
5648 struct elf_link_hash_entry *h,
5649 struct bfd_link_info *info)
5651 struct elf_link_hash_entry *sh;
5652 size_t len1, len2, len3;
5655 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5658 stub = ".plt_pic32.";
5660 stub = ".plt_call32.";
5662 len1 = strlen (h->root.root.string);
5663 len2 = strlen (stub);
5666 len3 = strlen (ent->sec->name);
5667 name = bfd_malloc (len1 + len2 + len3 + 9);
5670 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5672 memcpy (name + 8, ent->sec->name, len3);
5673 memcpy (name + 8 + len3, stub, len2);
5674 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5675 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5678 if (sh->root.type == bfd_link_hash_new)
5680 sh->root.type = bfd_link_hash_defined;
5681 sh->root.u.def.section = htab->glink;
5682 sh->root.u.def.value = ent->glink_offset;
5683 sh->ref_regular = 1;
5684 sh->def_regular = 1;
5685 sh->ref_regular_nonweak = 1;
5686 sh->forced_local = 1;
5692 /* Allocate NEED contiguous space in .got, and return the offset.
5693 Handles allocation of the got header when crossing 32k. */
5696 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5699 unsigned int max_before_header;
5701 if (htab->plt_type == PLT_VXWORKS)
5703 where = htab->got->size;
5704 htab->got->size += need;
5708 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5709 if (need <= htab->got_gap)
5711 where = max_before_header - htab->got_gap;
5712 htab->got_gap -= need;
5716 if (htab->got->size + need > max_before_header
5717 && htab->got->size <= max_before_header)
5719 htab->got_gap = max_before_header - htab->got->size;
5720 htab->got->size = max_before_header + htab->got_header_size;
5722 where = htab->got->size;
5723 htab->got->size += need;
5729 /* Allocate space in associated reloc sections for dynamic relocs. */
5732 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5734 struct bfd_link_info *info = inf;
5735 struct ppc_elf_link_hash_entry *eh;
5736 struct ppc_elf_link_hash_table *htab;
5737 struct elf_dyn_relocs *p;
5739 if (h->root.type == bfd_link_hash_indirect)
5742 htab = ppc_elf_hash_table (info);
5743 if (htab->elf.dynamic_sections_created
5744 || h->type == STT_GNU_IFUNC)
5746 struct plt_entry *ent;
5747 bfd_boolean doneone = FALSE;
5748 bfd_vma plt_offset = 0, glink_offset = 0;
5751 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5752 if (ent->plt.refcount > 0)
5754 /* Make sure this symbol is output as a dynamic symbol. */
5755 if (h->dynindx == -1
5758 && htab->elf.dynamic_sections_created)
5760 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5764 dyn = htab->elf.dynamic_sections_created;
5766 || h->type == STT_GNU_IFUNC
5767 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5769 asection *s = htab->plt;
5770 if (!dyn || h->dynindx == -1)
5773 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5777 plt_offset = s->size;
5780 ent->plt.offset = plt_offset;
5783 if (!doneone || info->shared)
5785 glink_offset = s->size;
5786 s->size += GLINK_ENTRY_SIZE;
5787 if (h == htab->tls_get_addr
5788 && !htab->params->no_tls_get_addr_opt)
5789 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5796 h->root.u.def.section = s;
5797 h->root.u.def.value = glink_offset;
5799 ent->glink_offset = glink_offset;
5801 if (htab->params->emit_stub_syms
5802 && !add_stub_sym (ent, h, info))
5809 /* If this is the first .plt entry, make room
5810 for the special first entry. */
5812 s->size += htab->plt_initial_entry_size;
5814 /* The PowerPC PLT is actually composed of two
5815 parts, the first part is 2 words (for a load
5816 and a jump), and then there is a remaining
5817 word available at the end. */
5818 plt_offset = (htab->plt_initial_entry_size
5819 + (htab->plt_slot_size
5821 - htab->plt_initial_entry_size)
5822 / htab->plt_entry_size)));
5824 /* If this symbol is not defined in a regular
5825 file, and we are not generating a shared
5826 library, then set the symbol to this location
5827 in the .plt. This is to avoid text
5828 relocations, and is required to make
5829 function pointers compare as equal between
5830 the normal executable and the shared library. */
5835 h->root.u.def.section = s;
5836 h->root.u.def.value = plt_offset;
5839 /* Make room for this entry. */
5840 s->size += htab->plt_entry_size;
5841 /* After the 8192nd entry, room for two entries
5843 if (htab->plt_type == PLT_OLD
5844 && (s->size - htab->plt_initial_entry_size)
5845 / htab->plt_entry_size
5846 > PLT_NUM_SINGLE_ENTRIES)
5847 s->size += htab->plt_entry_size;
5849 ent->plt.offset = plt_offset;
5852 /* We also need to make an entry in the .rela.plt section. */
5855 if (!htab->elf.dynamic_sections_created
5856 || h->dynindx == -1)
5857 htab->reliplt->size += sizeof (Elf32_External_Rela);
5860 htab->relplt->size += sizeof (Elf32_External_Rela);
5862 if (htab->plt_type == PLT_VXWORKS)
5864 /* Allocate space for the unloaded relocations. */
5866 && htab->elf.dynamic_sections_created)
5869 == (bfd_vma) htab->plt_initial_entry_size)
5871 htab->srelplt2->size
5872 += (sizeof (Elf32_External_Rela)
5873 * VXWORKS_PLTRESOLVE_RELOCS);
5876 htab->srelplt2->size
5877 += (sizeof (Elf32_External_Rela)
5878 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
5881 /* Every PLT entry has an associated GOT entry in
5883 htab->sgotplt->size += 4;
5890 ent->plt.offset = (bfd_vma) -1;
5893 ent->plt.offset = (bfd_vma) -1;
5897 h->plt.plist = NULL;
5903 h->plt.plist = NULL;
5907 eh = (struct ppc_elf_link_hash_entry *) h;
5908 if (eh->elf.got.refcount > 0)
5913 /* Make sure this symbol is output as a dynamic symbol. */
5914 if (eh->elf.dynindx == -1
5915 && !eh->elf.forced_local
5916 && eh->elf.type != STT_GNU_IFUNC
5917 && htab->elf.dynamic_sections_created)
5919 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
5924 if ((eh->tls_mask & TLS_TLS) != 0)
5926 if ((eh->tls_mask & TLS_LD) != 0)
5928 if (!eh->elf.def_dynamic)
5929 /* We'll just use htab->tlsld_got.offset. This should
5930 always be the case. It's a little odd if we have
5931 a local dynamic reloc against a non-local symbol. */
5932 htab->tlsld_got.refcount += 1;
5936 if ((eh->tls_mask & TLS_GD) != 0)
5938 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5940 if ((eh->tls_mask & TLS_DTPREL) != 0)
5946 eh->elf.got.offset = (bfd_vma) -1;
5949 eh->elf.got.offset = allocate_got (htab, need);
5950 dyn = htab->elf.dynamic_sections_created;
5952 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
5953 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5954 || eh->elf.root.type != bfd_link_hash_undefweak))
5956 asection *rsec = htab->relgot;
5958 if (eh->elf.type == STT_GNU_IFUNC)
5959 rsec = htab->reliplt;
5960 /* All the entries we allocated need relocs.
5961 Except LD only needs one. */
5962 if ((eh->tls_mask & TLS_LD) != 0
5963 && eh->elf.def_dynamic)
5965 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
5970 eh->elf.got.offset = (bfd_vma) -1;
5972 if (eh->dyn_relocs == NULL
5973 || !htab->elf.dynamic_sections_created)
5976 /* In the shared -Bsymbolic case, discard space allocated for
5977 dynamic pc-relative relocs against symbols which turn out to be
5978 defined in regular objects. For the normal shared case, discard
5979 space for relocs that have become local due to symbol visibility
5984 /* Relocs that use pc_count are those that appear on a call insn,
5985 or certain REL relocs (see must_be_dyn_reloc) that can be
5986 generated via assembly. We want calls to protected symbols to
5987 resolve directly to the function rather than going via the plt.
5988 If people want function pointer comparisons to work as expected
5989 then they should avoid writing weird assembly. */
5990 if (SYMBOL_CALLS_LOCAL (info, h))
5992 struct elf_dyn_relocs **pp;
5994 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5996 p->count -= p->pc_count;
6005 if (htab->is_vxworks)
6007 struct elf_dyn_relocs **pp;
6009 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6011 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6018 /* Discard relocs on undefined symbols that must be local. */
6019 if (eh->dyn_relocs != NULL
6020 && h->root.type == bfd_link_hash_undefined
6021 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6022 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6023 eh->dyn_relocs = NULL;
6025 /* Also discard relocs on undefined weak syms with non-default
6027 if (eh->dyn_relocs != NULL
6028 && h->root.type == bfd_link_hash_undefweak)
6030 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6031 eh->dyn_relocs = NULL;
6033 /* Make sure undefined weak symbols are output as a dynamic
6035 else if (h->dynindx == -1
6039 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6044 else if (ELIMINATE_COPY_RELOCS)
6046 /* For the non-shared case, discard space for relocs against
6047 symbols which turn out to need copy relocs or are not
6053 /* Make sure this symbol is output as a dynamic symbol.
6054 Undefined weak syms won't yet be marked as dynamic. */
6055 if (h->dynindx == -1
6056 && !h->forced_local)
6058 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6062 /* If that succeeded, we know we'll be keeping all the
6064 if (h->dynindx != -1)
6068 eh->dyn_relocs = NULL;
6073 /* Finally, allocate space. */
6074 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6076 asection *sreloc = elf_section_data (p->sec)->sreloc;
6077 if (eh->elf.type == STT_GNU_IFUNC)
6078 sreloc = htab->reliplt;
6079 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6085 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6086 read-only sections. */
6089 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6091 if (h->root.type == bfd_link_hash_indirect)
6094 if (readonly_dynrelocs (h))
6096 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6098 /* Not an error, just cut short the traversal. */
6104 static const unsigned char glink_eh_frame_cie[] =
6106 0, 0, 0, 16, /* length. */
6107 0, 0, 0, 0, /* id. */
6108 1, /* CIE version. */
6109 'z', 'R', 0, /* Augmentation string. */
6110 4, /* Code alignment. */
6111 0x7c, /* Data alignment. */
6113 1, /* Augmentation size. */
6114 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6115 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6118 /* Set the sizes of the dynamic sections. */
6121 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6122 struct bfd_link_info *info)
6124 struct ppc_elf_link_hash_table *htab;
6130 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6133 htab = ppc_elf_hash_table (info);
6134 BFD_ASSERT (htab->elf.dynobj != NULL);
6136 if (elf_hash_table (info)->dynamic_sections_created)
6138 /* Set the contents of the .interp section to the interpreter. */
6139 if (info->executable)
6141 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6142 BFD_ASSERT (s != NULL);
6143 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6144 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6148 if (htab->plt_type == PLT_OLD)
6149 htab->got_header_size = 16;
6150 else if (htab->plt_type == PLT_NEW)
6151 htab->got_header_size = 12;
6153 /* Set up .got offsets for local syms, and space for local dynamic
6155 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6157 bfd_signed_vma *local_got;
6158 bfd_signed_vma *end_local_got;
6159 struct plt_entry **local_plt;
6160 struct plt_entry **end_local_plt;
6162 bfd_size_type locsymcount;
6163 Elf_Internal_Shdr *symtab_hdr;
6165 if (!is_ppc_elf (ibfd))
6168 for (s = ibfd->sections; s != NULL; s = s->next)
6170 struct ppc_dyn_relocs *p;
6172 for (p = ((struct ppc_dyn_relocs *)
6173 elf_section_data (s)->local_dynrel);
6177 if (!bfd_is_abs_section (p->sec)
6178 && bfd_is_abs_section (p->sec->output_section))
6180 /* Input section has been discarded, either because
6181 it is a copy of a linkonce section or due to
6182 linker script /DISCARD/, so we'll be discarding
6185 else if (htab->is_vxworks
6186 && strcmp (p->sec->output_section->name,
6189 /* Relocations in vxworks .tls_vars sections are
6190 handled specially by the loader. */
6192 else if (p->count != 0)
6194 asection *sreloc = elf_section_data (p->sec)->sreloc;
6196 sreloc = htab->reliplt;
6197 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6198 if ((p->sec->output_section->flags
6199 & (SEC_READONLY | SEC_ALLOC))
6200 == (SEC_READONLY | SEC_ALLOC))
6201 info->flags |= DF_TEXTREL;
6206 local_got = elf_local_got_refcounts (ibfd);
6210 symtab_hdr = &elf_symtab_hdr (ibfd);
6211 locsymcount = symtab_hdr->sh_info;
6212 end_local_got = local_got + locsymcount;
6213 local_plt = (struct plt_entry **) end_local_got;
6214 end_local_plt = local_plt + locsymcount;
6215 lgot_masks = (char *) end_local_plt;
6217 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6220 unsigned int need = 0;
6221 if ((*lgot_masks & TLS_TLS) != 0)
6223 if ((*lgot_masks & TLS_GD) != 0)
6225 if ((*lgot_masks & TLS_LD) != 0)
6226 htab->tlsld_got.refcount += 1;
6227 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6229 if ((*lgot_masks & TLS_DTPREL) != 0)
6235 *local_got = (bfd_vma) -1;
6238 *local_got = allocate_got (htab, need);
6241 asection *srel = htab->relgot;
6242 if ((*lgot_masks & PLT_IFUNC) != 0)
6243 srel = htab->reliplt;
6244 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6249 *local_got = (bfd_vma) -1;
6251 if (htab->is_vxworks)
6254 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6255 for (; local_plt < end_local_plt; ++local_plt)
6257 struct plt_entry *ent;
6258 bfd_boolean doneone = FALSE;
6259 bfd_vma plt_offset = 0, glink_offset = 0;
6261 for (ent = *local_plt; ent != NULL; ent = ent->next)
6262 if (ent->plt.refcount > 0)
6268 plt_offset = s->size;
6271 ent->plt.offset = plt_offset;
6274 if (!doneone || info->shared)
6276 glink_offset = s->size;
6277 s->size += GLINK_ENTRY_SIZE;
6279 ent->glink_offset = glink_offset;
6283 htab->reliplt->size += sizeof (Elf32_External_Rela);
6288 ent->plt.offset = (bfd_vma) -1;
6292 /* Allocate space for global sym dynamic relocs. */
6293 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6295 if (htab->tlsld_got.refcount > 0)
6297 htab->tlsld_got.offset = allocate_got (htab, 8);
6299 htab->relgot->size += sizeof (Elf32_External_Rela);
6302 htab->tlsld_got.offset = (bfd_vma) -1;
6304 if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
6306 unsigned int g_o_t = 32768;
6308 /* If we haven't allocated the header, do so now. When we get here,
6309 for old plt/got the got size will be 0 to 32764 (not allocated),
6310 or 32780 to 65536 (header allocated). For new plt/got, the
6311 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6312 if (htab->got->size <= 32768)
6314 g_o_t = htab->got->size;
6315 if (htab->plt_type == PLT_OLD)
6317 htab->got->size += htab->got_header_size;
6320 htab->elf.hgot->root.u.def.value = g_o_t;
6324 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6326 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6327 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6329 if (info->emitrelocations)
6331 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6333 if (sda != NULL && sda->ref_regular)
6334 sda->root.u.def.section->flags |= SEC_KEEP;
6335 sda = htab->sdata[1].sym;
6336 if (sda != NULL && sda->ref_regular)
6337 sda->root.u.def.section->flags |= SEC_KEEP;
6340 if (htab->glink != NULL
6341 && htab->glink->size != 0
6342 && htab->elf.dynamic_sections_created)
6344 htab->glink_pltresolve = htab->glink->size;
6345 /* Space for the branch table. */
6346 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6347 /* Pad out to align the start of PLTresolve. */
6348 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6350 htab->glink->size += GLINK_PLTRESOLVE;
6352 if (htab->params->emit_stub_syms)
6354 struct elf_link_hash_entry *sh;
6355 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6356 TRUE, FALSE, FALSE);
6359 if (sh->root.type == bfd_link_hash_new)
6361 sh->root.type = bfd_link_hash_defined;
6362 sh->root.u.def.section = htab->glink;
6363 sh->root.u.def.value = htab->glink_pltresolve;
6364 sh->ref_regular = 1;
6365 sh->def_regular = 1;
6366 sh->ref_regular_nonweak = 1;
6367 sh->forced_local = 1;
6370 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6371 TRUE, FALSE, FALSE);
6374 if (sh->root.type == bfd_link_hash_new)
6376 sh->root.type = bfd_link_hash_defined;
6377 sh->root.u.def.section = htab->glink;
6378 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6379 sh->ref_regular = 1;
6380 sh->def_regular = 1;
6381 sh->ref_regular_nonweak = 1;
6382 sh->forced_local = 1;
6388 if (htab->glink != NULL
6389 && htab->glink->size != 0
6390 && htab->glink_eh_frame != NULL
6391 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6392 && _bfd_elf_eh_frame_present (info))
6394 s = htab->glink_eh_frame;
6395 s->size = sizeof (glink_eh_frame_cie) + 20;
6399 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6404 /* We've now determined the sizes of the various dynamic sections.
6405 Allocate memory for them. */
6407 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6409 bfd_boolean strip_section = TRUE;
6411 if ((s->flags & SEC_LINKER_CREATED) == 0)
6417 /* We'd like to strip these sections if they aren't needed, but if
6418 we've exported dynamic symbols from them we must leave them.
6419 It's too late to tell BFD to get rid of the symbols. */
6420 if (htab->elf.hplt != NULL)
6421 strip_section = FALSE;
6422 /* Strip this section if we don't need it; see the
6425 else if (s == htab->iplt
6427 || s == htab->glink_eh_frame
6428 || s == htab->sgotplt
6430 || s == htab->dynbss
6431 || s == htab->dynsbss)
6433 /* Strip these too. */
6435 else if (s == htab->sdata[0].section
6436 || s == htab->sdata[1].section)
6438 strip_section = (s->flags & SEC_KEEP) == 0;
6440 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6445 /* Remember whether there are any relocation sections. */
6448 /* We use the reloc_count field as a counter if we need
6449 to copy relocs into the output file. */
6455 /* It's not one of our sections, so don't allocate space. */
6459 if (s->size == 0 && strip_section)
6461 /* If we don't need this section, strip it from the
6462 output file. This is mostly to handle .rela.bss and
6463 .rela.plt. We must create both sections in
6464 create_dynamic_sections, because they must be created
6465 before the linker maps input sections to output
6466 sections. The linker does that before
6467 adjust_dynamic_symbol is called, and it is that
6468 function which decides whether anything needs to go
6469 into these sections. */
6470 s->flags |= SEC_EXCLUDE;
6474 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6477 /* Allocate memory for the section contents. */
6478 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6479 if (s->contents == NULL)
6483 if (htab->elf.dynamic_sections_created)
6485 /* Add some entries to the .dynamic section. We fill in the
6486 values later, in ppc_elf_finish_dynamic_sections, but we
6487 must add the entries now so that we get the correct size for
6488 the .dynamic section. The DT_DEBUG entry is filled in by the
6489 dynamic linker and used by the debugger. */
6490 #define add_dynamic_entry(TAG, VAL) \
6491 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6493 if (info->executable)
6495 if (!add_dynamic_entry (DT_DEBUG, 0))
6499 if (htab->plt != NULL && htab->plt->size != 0)
6501 if (!add_dynamic_entry (DT_PLTGOT, 0)
6502 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6503 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6504 || !add_dynamic_entry (DT_JMPREL, 0))
6508 if (htab->plt_type == PLT_NEW
6509 && htab->glink != NULL
6510 && htab->glink->size != 0)
6512 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6514 if (!htab->params->no_tls_get_addr_opt
6515 && htab->tls_get_addr != NULL
6516 && htab->tls_get_addr->plt.plist != NULL
6517 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6523 if (!add_dynamic_entry (DT_RELA, 0)
6524 || !add_dynamic_entry (DT_RELASZ, 0)
6525 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6529 /* If any dynamic relocs apply to a read-only section, then we
6530 need a DT_TEXTREL entry. */
6531 if ((info->flags & DF_TEXTREL) == 0)
6532 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6535 if ((info->flags & DF_TEXTREL) != 0)
6537 if (!add_dynamic_entry (DT_TEXTREL, 0))
6540 if (htab->is_vxworks
6541 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6544 #undef add_dynamic_entry
6546 if (htab->glink_eh_frame != NULL
6547 && htab->glink_eh_frame->contents != NULL)
6549 unsigned char *p = htab->glink_eh_frame->contents;
6552 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6553 /* CIE length (rewrite in case little-endian). */
6554 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6555 p += sizeof (glink_eh_frame_cie);
6557 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6558 bfd_put_32 (htab->elf.dynobj, val, p);
6561 val = p - htab->glink_eh_frame->contents;
6562 bfd_put_32 (htab->elf.dynobj, val, p);
6564 /* Offset to .glink. Set later. */
6567 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6573 && htab->elf.dynamic_sections_created)
6575 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6577 *p++ = DW_CFA_advance_loc + adv;
6580 *p++ = DW_CFA_advance_loc1;
6583 else if (adv < 65536)
6585 *p++ = DW_CFA_advance_loc2;
6586 bfd_put_16 (htab->elf.dynobj, adv, p);
6591 *p++ = DW_CFA_advance_loc4;
6592 bfd_put_32 (htab->elf.dynobj, adv, p);
6595 *p++ = DW_CFA_register;
6598 *p++ = DW_CFA_advance_loc + 4;
6599 *p++ = DW_CFA_restore_extended;
6602 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6603 == htab->glink_eh_frame->size);
6609 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6610 if it looks like nothing is using them. */
6613 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6615 struct elf_link_hash_entry *sda = lsect->sym;
6617 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6621 s = bfd_get_section_by_name (output_bfd, lsect->name);
6622 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6624 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6625 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6627 sda->def_regular = 0;
6628 /* This is somewhat magic. See elf_link_output_extsym. */
6629 sda->ref_dynamic = 1;
6630 sda->forced_local = 0;
6637 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6639 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6643 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6644 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6649 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6652 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6654 if (h->plt.plist != NULL
6656 && (!h->pointer_equality_needed
6657 || !h->ref_regular_nonweak))
6660 return _bfd_elf_hash_symbol (h);
6663 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6665 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6666 used for some functions that are allowed to break the ABI). */
6667 static const int shared_stub_entry[] =
6669 0x7c0802a6, /* mflr 0 */
6670 0x429f0005, /* bcl 20, 31, .Lxxx */
6671 0x7d8802a6, /* mflr 12 */
6672 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6673 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6674 0x7c0803a6, /* mtlr 0 */
6675 0x7d8903a6, /* mtctr 12 */
6676 0x4e800420, /* bctr */
6679 static const int stub_entry[] =
6681 0x3d800000, /* lis 12,xxx@ha */
6682 0x398c0000, /* addi 12,12,xxx@l */
6683 0x7d8903a6, /* mtctr 12 */
6684 0x4e800420, /* bctr */
6687 struct ppc_elf_relax_info
6689 unsigned int workaround_size;
6692 /* This function implements long branch trampolines, and the ppc476
6693 icache bug workaround. Any section needing trampolines or patch
6694 space for the workaround has its size extended so that we can
6695 add trampolines at the end of the section. */
6698 ppc_elf_relax_section (bfd *abfd,
6700 struct bfd_link_info *link_info,
6705 struct one_fixup *next;
6707 /* Final link, can use the symbol offset. For a
6708 relocatable link we use the symbol's index. */
6713 Elf_Internal_Shdr *symtab_hdr;
6714 bfd_byte *contents = NULL;
6715 Elf_Internal_Sym *isymbuf = NULL;
6716 Elf_Internal_Rela *internal_relocs = NULL;
6717 Elf_Internal_Rela *irel, *irelend = NULL;
6718 struct one_fixup *fixups = NULL;
6719 struct ppc_elf_relax_info *relax_info = NULL;
6720 unsigned changes = 0;
6721 bfd_boolean workaround_change;
6722 struct ppc_elf_link_hash_table *htab;
6723 bfd_size_type trampbase, trampoff, newsize;
6725 bfd_boolean maybe_pasted;
6729 /* No need to do anything with non-alloc or non-code sections. */
6730 if ((isec->flags & SEC_ALLOC) == 0
6731 || (isec->flags & SEC_CODE) == 0
6732 || (isec->flags & SEC_LINKER_CREATED) != 0
6736 /* We cannot represent the required PIC relocs in the output, so don't
6737 do anything. The linker doesn't support mixing -shared and -r
6739 if (link_info->relocatable && link_info->shared)
6742 htab = ppc_elf_hash_table (link_info);
6746 isec->size = (isec->size + 3) & -4;
6747 if (isec->rawsize == 0)
6748 isec->rawsize = isec->size;
6749 trampbase = isec->size;
6751 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6752 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6753 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6755 if (htab->params->ppc476_workaround)
6757 if (elf_section_data (isec)->sec_info == NULL)
6759 elf_section_data (isec)->sec_info
6760 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6761 if (elf_section_data (isec)->sec_info == NULL)
6764 relax_info = elf_section_data (isec)->sec_info;
6765 trampbase -= relax_info->workaround_size;
6768 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6769 || strcmp (isec->output_section->name, ".fini") == 0);
6770 /* Space for a branch around any trampolines. */
6771 trampoff = trampbase;
6772 if (maybe_pasted && trampbase == isec->rawsize)
6775 symtab_hdr = &elf_symtab_hdr (abfd);
6777 if (htab->params->branch_trampolines)
6779 /* Get a copy of the native relocations. */
6780 if (isec->reloc_count != 0)
6782 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6783 link_info->keep_memory);
6784 if (internal_relocs == NULL)
6788 got2 = bfd_get_section_by_name (abfd, ".got2");
6790 irelend = internal_relocs + isec->reloc_count;
6791 for (irel = internal_relocs; irel < irelend; irel++)
6793 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6796 struct one_fixup *f;
6797 size_t insn_offset = 0;
6798 bfd_vma max_branch_offset, val;
6801 struct elf_link_hash_entry *h;
6802 struct plt_entry **plist;
6803 unsigned char sym_type;
6808 case R_PPC_LOCAL24PC:
6809 case R_PPC_PLTREL24:
6810 max_branch_offset = 1 << 25;
6814 case R_PPC_REL14_BRTAKEN:
6815 case R_PPC_REL14_BRNTAKEN:
6816 max_branch_offset = 1 << 15;
6823 /* Get the value of the symbol referred to by the reloc. */
6825 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6827 /* A local symbol. */
6828 Elf_Internal_Sym *isym;
6830 /* Read this BFD's local symbols. */
6831 if (isymbuf == NULL)
6833 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6834 if (isymbuf == NULL)
6835 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6836 symtab_hdr->sh_info, 0,
6841 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6842 if (isym->st_shndx == SHN_UNDEF)
6843 tsec = bfd_und_section_ptr;
6844 else if (isym->st_shndx == SHN_ABS)
6845 tsec = bfd_abs_section_ptr;
6846 else if (isym->st_shndx == SHN_COMMON)
6847 tsec = bfd_com_section_ptr;
6849 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6851 toff = isym->st_value;
6852 sym_type = ELF_ST_TYPE (isym->st_info);
6856 /* Global symbol handling. */
6859 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6860 h = elf_sym_hashes (abfd)[indx];
6862 while (h->root.type == bfd_link_hash_indirect
6863 || h->root.type == bfd_link_hash_warning)
6864 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6866 if (h->root.type == bfd_link_hash_defined
6867 || h->root.type == bfd_link_hash_defweak)
6869 tsec = h->root.u.def.section;
6870 toff = h->root.u.def.value;
6872 else if (h->root.type == bfd_link_hash_undefined
6873 || h->root.type == bfd_link_hash_undefweak)
6875 tsec = bfd_und_section_ptr;
6876 toff = link_info->relocatable ? indx : 0;
6881 /* If this branch is to __tls_get_addr then we may later
6882 optimise away the call. We won't be needing a long-
6883 branch stub in that case. */
6884 if (link_info->executable
6885 && !link_info->relocatable
6886 && h == htab->tls_get_addr
6887 && irel != internal_relocs)
6889 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6890 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6891 unsigned int tls_mask = 0;
6893 /* The previous reloc should be one of R_PPC_TLSGD or
6894 R_PPC_TLSLD, or for older object files, a reloc
6895 on the __tls_get_addr arg setup insn. Get tls
6896 mask bits from the symbol on that reloc. */
6897 if (t_symndx < symtab_hdr->sh_info)
6899 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6901 if (local_got_offsets != NULL)
6903 struct plt_entry **local_plt = (struct plt_entry **)
6904 (local_got_offsets + symtab_hdr->sh_info);
6905 char *lgot_masks = (char *)
6906 (local_plt + symtab_hdr->sh_info);
6907 tls_mask = lgot_masks[t_symndx];
6912 struct elf_link_hash_entry *th
6913 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6915 while (th->root.type == bfd_link_hash_indirect
6916 || th->root.type == bfd_link_hash_warning)
6917 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6920 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
6923 /* The mask bits tell us if the call will be
6925 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
6926 && (t_rtype == R_PPC_TLSGD
6927 || t_rtype == R_PPC_GOT_TLSGD16
6928 || t_rtype == R_PPC_GOT_TLSGD16_LO))
6930 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
6931 && (t_rtype == R_PPC_TLSLD
6932 || t_rtype == R_PPC_GOT_TLSLD16
6933 || t_rtype == R_PPC_GOT_TLSLD16_LO))
6940 /* The condition here under which we call find_plt_ent must
6941 match that in relocate_section. If we call find_plt_ent here
6942 but not in relocate_section, or vice versa, then the branch
6943 destination used here may be incorrect. */
6947 /* We know is_branch_reloc (r_type) is true. */
6948 if (h->type == STT_GNU_IFUNC
6949 || r_type == R_PPC_PLTREL24)
6950 plist = &h->plt.plist;
6952 else if (sym_type == STT_GNU_IFUNC
6953 && elf_local_got_offsets (abfd) != NULL)
6955 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6956 struct plt_entry **local_plt = (struct plt_entry **)
6957 (local_got_offsets + symtab_hdr->sh_info);
6958 plist = local_plt + ELF32_R_SYM (irel->r_info);
6963 struct plt_entry *ent;
6965 if (r_type == R_PPC_PLTREL24 && link_info->shared)
6966 addend = irel->r_addend;
6967 ent = find_plt_ent (plist, got2, addend);
6970 if (htab->plt_type == PLT_NEW
6972 || !htab->elf.dynamic_sections_created
6973 || h->dynindx == -1)
6976 toff = ent->glink_offset;
6981 toff = ent->plt.offset;
6986 /* If the branch and target are in the same section, you have
6987 no hope of adding stubs. We'll error out later should the
6992 /* There probably isn't any reason to handle symbols in
6993 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
6994 attribute for a code section, and we are only looking at
6995 branches. However, implement it correctly here as a
6996 reference for other target relax_section functions. */
6997 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
6999 /* At this stage in linking, no SEC_MERGE symbol has been
7000 adjusted, so all references to such symbols need to be
7001 passed through _bfd_merged_section_offset. (Later, in
7002 relocate_section, all SEC_MERGE symbols *except* for
7003 section symbols have been adjusted.)
7005 gas may reduce relocations against symbols in SEC_MERGE
7006 sections to a relocation against the section symbol when
7007 the original addend was zero. When the reloc is against
7008 a section symbol we should include the addend in the
7009 offset passed to _bfd_merged_section_offset, since the
7010 location of interest is the original symbol. On the
7011 other hand, an access to "sym+addend" where "sym" is not
7012 a section symbol should not include the addend; Such an
7013 access is presumed to be an offset from "sym"; The
7014 location of interest is just "sym". */
7015 if (sym_type == STT_SECTION)
7016 toff += irel->r_addend;
7019 = _bfd_merged_section_offset (abfd, &tsec,
7020 elf_section_data (tsec)->sec_info,
7023 if (sym_type != STT_SECTION)
7024 toff += irel->r_addend;
7026 /* PLTREL24 addends are special. */
7027 else if (r_type != R_PPC_PLTREL24)
7028 toff += irel->r_addend;
7030 /* Attempted -shared link of non-pic code loses. */
7031 if ((!link_info->relocatable
7032 && tsec == bfd_und_section_ptr)
7033 || tsec->output_section == NULL
7034 || (tsec->owner != NULL
7035 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7038 roff = irel->r_offset;
7040 /* If the branch is in range, no need to do anything. */
7041 if (tsec != bfd_und_section_ptr
7042 && (!link_info->relocatable
7043 /* A relocatable link may have sections moved during
7044 final link, so do not presume they remain in range. */
7045 || tsec->output_section == isec->output_section))
7047 bfd_vma symaddr, reladdr;
7049 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7050 reladdr = isec->output_section->vma + isec->output_offset + roff;
7051 if (symaddr - reladdr + max_branch_offset
7052 < 2 * max_branch_offset)
7056 /* Look for an existing fixup to this address. */
7057 for (f = fixups; f ; f = f->next)
7058 if (f->tsec == tsec && f->toff == toff)
7064 unsigned long stub_rtype;
7066 val = trampoff - roff;
7067 if (val >= max_branch_offset)
7068 /* Oh dear, we can't reach a trampoline. Don't try to add
7069 one. We'll report an error later. */
7072 if (link_info->shared)
7074 size = 4 * ARRAY_SIZE (shared_stub_entry);
7079 size = 4 * ARRAY_SIZE (stub_entry);
7082 stub_rtype = R_PPC_RELAX;
7083 if (tsec == htab->plt
7084 || tsec == htab->glink)
7086 stub_rtype = R_PPC_RELAX_PLT;
7087 if (r_type == R_PPC_PLTREL24)
7088 stub_rtype = R_PPC_RELAX_PLTREL24;
7091 /* Hijack the old relocation. Since we need two
7092 relocations for this use a "composite" reloc. */
7093 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7095 irel->r_offset = trampoff + insn_offset;
7096 if (r_type == R_PPC_PLTREL24
7097 && stub_rtype != R_PPC_RELAX_PLTREL24)
7100 /* Record the fixup so we don't do it again this section. */
7101 f = bfd_malloc (sizeof (*f));
7105 f->trampoff = trampoff;
7113 val = f->trampoff - roff;
7114 if (val >= max_branch_offset)
7117 /* Nop out the reloc, since we're finalizing things here. */
7118 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7121 /* Get the section contents. */
7122 if (contents == NULL)
7124 /* Get cached copy if it exists. */
7125 if (elf_section_data (isec)->this_hdr.contents != NULL)
7126 contents = elf_section_data (isec)->this_hdr.contents;
7127 /* Go get them off disk. */
7128 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7132 /* Fix up the existing branch to hit the trampoline. */
7133 hit_addr = contents + roff;
7137 case R_PPC_LOCAL24PC:
7138 case R_PPC_PLTREL24:
7139 t0 = bfd_get_32 (abfd, hit_addr);
7141 t0 |= val & 0x3fffffc;
7142 bfd_put_32 (abfd, t0, hit_addr);
7146 case R_PPC_REL14_BRTAKEN:
7147 case R_PPC_REL14_BRNTAKEN:
7148 t0 = bfd_get_32 (abfd, hit_addr);
7151 bfd_put_32 (abfd, t0, hit_addr);
7156 while (fixups != NULL)
7158 struct one_fixup *f = fixups;
7159 fixups = fixups->next;
7164 workaround_change = FALSE;
7166 if (htab->params->ppc476_workaround
7167 && (!link_info->relocatable
7168 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7170 bfd_vma addr, end_addr;
7171 unsigned int crossings;
7172 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7174 addr = isec->output_section->vma + isec->output_offset;
7175 end_addr = addr + trampoff;
7177 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7180 /* Keep space aligned, to ensure the patch code itself does
7181 not cross a page. Don't decrease size calculated on a
7182 previous pass as otherwise we might never settle on a layout. */
7183 newsize = 15 - ((end_addr - 1) & 15);
7184 newsize += crossings * 16;
7185 if (relax_info->workaround_size < newsize)
7187 relax_info->workaround_size = newsize;
7188 workaround_change = TRUE;
7190 /* Ensure relocate_section is called. */
7191 isec->flags |= SEC_RELOC;
7193 newsize = trampoff + relax_info->workaround_size;
7196 if (changes || workaround_change)
7197 isec->size = newsize;
7200 && symtab_hdr->contents != (unsigned char *) isymbuf)
7202 if (! link_info->keep_memory)
7206 /* Cache the symbols for elf_link_input_bfd. */
7207 symtab_hdr->contents = (unsigned char *) isymbuf;
7211 if (contents != NULL
7212 && elf_section_data (isec)->this_hdr.contents != contents)
7214 if (!changes && !link_info->keep_memory)
7218 /* Cache the section contents for elf_link_input_bfd. */
7219 elf_section_data (isec)->this_hdr.contents = contents;
7225 /* Append sufficient NOP relocs so we can write out relocation
7226 information for the trampolines. */
7227 Elf_Internal_Shdr *rel_hdr;
7228 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7229 * sizeof (*new_relocs));
7234 memcpy (new_relocs, internal_relocs,
7235 isec->reloc_count * sizeof (*new_relocs));
7236 for (ix = changes; ix--;)
7238 irel = new_relocs + ix + isec->reloc_count;
7240 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7242 if (internal_relocs != elf_section_data (isec)->relocs)
7243 free (internal_relocs);
7244 elf_section_data (isec)->relocs = new_relocs;
7245 isec->reloc_count += changes;
7246 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7247 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7249 else if (internal_relocs != NULL
7250 && elf_section_data (isec)->relocs != internal_relocs)
7251 free (internal_relocs);
7253 *again = changes != 0 || workaround_change;
7257 while (fixups != NULL)
7259 struct one_fixup *f = fixups;
7260 fixups = fixups->next;
7263 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7265 if (contents != NULL
7266 && elf_section_data (isec)->this_hdr.contents != contents)
7268 if (internal_relocs != NULL
7269 && elf_section_data (isec)->relocs != internal_relocs)
7270 free (internal_relocs);
7274 /* What to do when ld finds relocations against symbols defined in
7275 discarded sections. */
7278 ppc_elf_action_discarded (asection *sec)
7280 if (strcmp (".fixup", sec->name) == 0)
7283 if (strcmp (".got2", sec->name) == 0)
7286 return _bfd_elf_default_action_discarded (sec);
7289 /* Fill in the address for a pointer generated in a linker section. */
7292 elf_finish_pointer_linker_section (bfd *input_bfd,
7293 elf_linker_section_t *lsect,
7294 struct elf_link_hash_entry *h,
7296 const Elf_Internal_Rela *rel)
7298 elf_linker_section_pointers_t *linker_section_ptr;
7300 BFD_ASSERT (lsect != NULL);
7304 /* Handle global symbol. */
7305 struct ppc_elf_link_hash_entry *eh;
7307 eh = (struct ppc_elf_link_hash_entry *) h;
7308 BFD_ASSERT (eh->elf.def_regular);
7309 linker_section_ptr = eh->linker_section_pointer;
7313 /* Handle local symbol. */
7314 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7316 BFD_ASSERT (is_ppc_elf (input_bfd));
7317 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7318 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7321 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7324 BFD_ASSERT (linker_section_ptr != NULL);
7326 /* Offset will always be a multiple of four, so use the bottom bit
7327 as a "written" flag. */
7328 if ((linker_section_ptr->offset & 1) == 0)
7330 bfd_put_32 (lsect->section->owner,
7331 relocation + linker_section_ptr->addend,
7332 lsect->section->contents + linker_section_ptr->offset);
7333 linker_section_ptr->offset += 1;
7336 relocation = (lsect->section->output_section->vma
7337 + lsect->section->output_offset
7338 + linker_section_ptr->offset - 1
7339 - SYM_VAL (lsect->sym));
7343 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7344 lsect->name, (long) relocation, (long) relocation);
7350 #define PPC_LO(v) ((v) & 0xffff)
7351 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7352 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7355 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7356 struct bfd_link_info *info)
7358 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7359 bfd *output_bfd = info->output_bfd;
7362 plt = ((ent->plt.offset & ~1)
7363 + plt_sec->output_section->vma
7364 + plt_sec->output_offset);
7370 if (ent->addend >= 32768)
7372 + ent->sec->output_section->vma
7373 + ent->sec->output_offset);
7374 else if (htab->elf.hgot != NULL)
7375 got = SYM_VAL (htab->elf.hgot);
7379 if (plt + 0x8000 < 0x10000)
7381 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7383 bfd_put_32 (output_bfd, MTCTR_11, p);
7385 bfd_put_32 (output_bfd, BCTR, p);
7387 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7392 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7394 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7396 bfd_put_32 (output_bfd, MTCTR_11, p);
7398 bfd_put_32 (output_bfd, BCTR, p);
7404 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7406 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7408 bfd_put_32 (output_bfd, MTCTR_11, p);
7410 bfd_put_32 (output_bfd, BCTR, p);
7415 /* Return true if symbol is defined statically. */
7418 is_static_defined (struct elf_link_hash_entry *h)
7420 return ((h->root.type == bfd_link_hash_defined
7421 || h->root.type == bfd_link_hash_defweak)
7422 && h->root.u.def.section != NULL
7423 && h->root.u.def.section->output_section != NULL);
7426 /* If INSN is an opcode that may be used with an @tls operand, return
7427 the transformed insn for TLS optimisation, otherwise return 0. If
7428 REG is non-zero only match an insn with RB or RA equal to REG. */
7431 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7435 if ((insn & (0x3f << 26)) != 31 << 26)
7438 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7439 rtra = insn & ((1 << 26) - (1 << 16));
7440 else if (((insn >> 16) & 0x1f) == reg)
7441 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7445 if ((insn & (0x3ff << 1)) == 266 << 1)
7448 else if ((insn & (0x1f << 1)) == 23 << 1
7449 && ((insn & (0x1f << 6)) < 14 << 6
7450 || ((insn & (0x1f << 6)) >= 16 << 6
7451 && (insn & (0x1f << 6)) < 24 << 6)))
7452 /* load and store indexed -> dform. */
7453 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7454 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7455 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7456 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7457 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7459 insn = (58 << 26) | 2;
7466 /* If INSN is an opcode that may be used with an @tprel operand, return
7467 the transformed insn for an undefined weak symbol, ie. with the
7468 thread pointer REG operand removed. Otherwise return 0. */
7471 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7473 if ((insn & (0x1f << 16)) == reg << 16
7474 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7475 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7476 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7477 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7478 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7479 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7480 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7481 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7482 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7483 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7484 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7485 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7486 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7487 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7488 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7489 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7491 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7492 && ((insn & 3) == 0 || (insn & 3) == 3))))
7494 insn &= ~(0x1f << 16);
7496 else if ((insn & (0x1f << 21)) == reg << 21
7497 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7498 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7499 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7501 insn &= ~(0x1f << 21);
7502 insn |= (insn & (0x1f << 16)) << 5;
7503 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7504 insn -= 2 >> 26; /* convert to ori,oris */
7512 is_insn_ds_form (unsigned int insn)
7514 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7515 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7516 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7517 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7521 is_insn_dq_form (unsigned int insn)
7523 return (insn & (0x3f << 26)) == 56u << 26; /* lq */
7526 /* The RELOCATE_SECTION function is called by the ELF backend linker
7527 to handle the relocations for a section.
7529 The relocs are always passed as Rela structures; if the section
7530 actually uses Rel structures, the r_addend field will always be
7533 This function is responsible for adjust the section contents as
7534 necessary, and (if using Rela relocs and generating a
7535 relocatable output file) adjusting the reloc addend as
7538 This function does not have to worry about setting the reloc
7539 address or the reloc symbol index.
7541 LOCAL_SYMS is a pointer to the swapped in local symbols.
7543 LOCAL_SECTIONS is an array giving the section in the input file
7544 corresponding to the st_shndx field of each local symbol.
7546 The global hash table entry for the global symbols can be found
7547 via elf_sym_hashes (input_bfd).
7549 When generating relocatable output, this function must handle
7550 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7551 going to be the section symbol corresponding to the output
7552 section, which means that the addend must be adjusted
7556 ppc_elf_relocate_section (bfd *output_bfd,
7557 struct bfd_link_info *info,
7559 asection *input_section,
7561 Elf_Internal_Rela *relocs,
7562 Elf_Internal_Sym *local_syms,
7563 asection **local_sections)
7565 Elf_Internal_Shdr *symtab_hdr;
7566 struct elf_link_hash_entry **sym_hashes;
7567 struct ppc_elf_link_hash_table *htab;
7568 Elf_Internal_Rela *rel;
7569 Elf_Internal_Rela *relend;
7570 Elf_Internal_Rela outrel;
7572 bfd_vma *local_got_offsets;
7573 bfd_boolean ret = TRUE;
7574 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
7575 bfd_boolean is_vxworks_tls;
7578 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7579 "%ld relocations%s",
7580 input_bfd, input_section,
7581 (long) input_section->reloc_count,
7582 (info->relocatable) ? " (relocatable)" : "");
7585 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7587 /* Initialize howto table if not already done. */
7588 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7589 ppc_elf_howto_init ();
7591 htab = ppc_elf_hash_table (info);
7592 local_got_offsets = elf_local_got_offsets (input_bfd);
7593 symtab_hdr = &elf_symtab_hdr (input_bfd);
7594 sym_hashes = elf_sym_hashes (input_bfd);
7595 /* We have to handle relocations in vxworks .tls_vars sections
7596 specially, because the dynamic loader is 'weird'. */
7597 is_vxworks_tls = (htab->is_vxworks && info->shared
7598 && !strcmp (input_section->output_section->name,
7601 relend = relocs + input_section->reloc_count;
7602 for (; rel < relend; rel++)
7604 enum elf_ppc_reloc_type r_type;
7606 bfd_reloc_status_type r;
7607 Elf_Internal_Sym *sym;
7609 struct elf_link_hash_entry *h;
7610 const char *sym_name;
7611 reloc_howto_type *howto;
7612 unsigned long r_symndx;
7614 bfd_vma branch_bit, from;
7615 bfd_boolean unresolved_reloc;
7617 unsigned int tls_type, tls_mask, tls_gd;
7618 struct plt_entry **ifunc;
7619 struct reloc_howto_struct alt_howto;
7621 r_type = ELF32_R_TYPE (rel->r_info);
7625 unresolved_reloc = FALSE;
7627 r_symndx = ELF32_R_SYM (rel->r_info);
7629 if (r_symndx < symtab_hdr->sh_info)
7631 sym = local_syms + r_symndx;
7632 sec = local_sections[r_symndx];
7633 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7635 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7639 bfd_boolean ignored;
7641 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7642 r_symndx, symtab_hdr, sym_hashes,
7644 unresolved_reloc, warned, ignored);
7646 sym_name = h->root.root.string;
7649 if (sec != NULL && discarded_section (sec))
7651 /* For relocs against symbols from removed linkonce sections,
7652 or sections discarded by a linker script, we just want the
7653 section contents zeroed. Avoid any special processing. */
7655 if (r_type < R_PPC_max)
7656 howto = ppc_elf_howto_table[r_type];
7657 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
7658 rel, 1, relend, howto, 0, contents);
7661 if (info->relocatable)
7664 && r_type == R_PPC_PLTREL24
7665 && rel->r_addend != 0)
7667 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7668 addend specifies the GOT pointer offset within .got2. */
7669 rel->r_addend += got2->output_offset;
7671 if (r_type != R_PPC_RELAX_PLT
7672 && r_type != R_PPC_RELAX_PLTREL24
7673 && r_type != R_PPC_RELAX)
7677 /* TLS optimizations. Replace instruction sequences and relocs
7678 based on information we collected in tls_optimize. We edit
7679 RELOCS so that --emit-relocs will output something sensible
7680 for the final instruction stream. */
7684 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7685 else if (local_got_offsets != NULL)
7687 struct plt_entry **local_plt;
7690 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7691 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7692 tls_mask = lgot_masks[r_symndx];
7695 /* Ensure reloc mapping code below stays sane. */
7696 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7697 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7698 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7699 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7700 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7701 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7702 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7703 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7710 case R_PPC_GOT_TPREL16:
7711 case R_PPC_GOT_TPREL16_LO:
7712 if ((tls_mask & TLS_TLS) != 0
7713 && (tls_mask & TLS_TPREL) == 0)
7717 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
7719 insn |= 0x3c020000; /* addis 0,2,0 */
7720 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
7721 r_type = R_PPC_TPREL16_HA;
7722 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7727 if ((tls_mask & TLS_TLS) != 0
7728 && (tls_mask & TLS_TPREL) == 0)
7732 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7733 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7736 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7737 r_type = R_PPC_TPREL16_LO;
7738 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7740 /* Was PPC_TLS which sits on insn boundary, now
7741 PPC_TPREL16_LO which is at low-order half-word. */
7742 rel->r_offset += d_offset;
7746 case R_PPC_GOT_TLSGD16_HI:
7747 case R_PPC_GOT_TLSGD16_HA:
7748 tls_gd = TLS_TPRELGD;
7749 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7753 case R_PPC_GOT_TLSLD16_HI:
7754 case R_PPC_GOT_TLSLD16_HA:
7755 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7758 if ((tls_mask & tls_gd) != 0)
7759 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7760 + R_PPC_GOT_TPREL16);
7763 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7764 rel->r_offset -= d_offset;
7765 r_type = R_PPC_NONE;
7767 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7771 case R_PPC_GOT_TLSGD16:
7772 case R_PPC_GOT_TLSGD16_LO:
7773 tls_gd = TLS_TPRELGD;
7774 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7778 case R_PPC_GOT_TLSLD16:
7779 case R_PPC_GOT_TLSLD16_LO:
7780 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7782 unsigned int insn1, insn2;
7786 offset = (bfd_vma) -1;
7787 /* If not using the newer R_PPC_TLSGD/LD to mark
7788 __tls_get_addr calls, we must trust that the call
7789 stays with its arg setup insns, ie. that the next
7790 reloc is the __tls_get_addr call associated with
7791 the current reloc. Edit both insns. */
7792 if (input_section->has_tls_get_addr_call
7794 && branch_reloc_hash_match (input_bfd, rel + 1,
7795 htab->tls_get_addr))
7796 offset = rel[1].r_offset;
7797 if ((tls_mask & tls_gd) != 0)
7800 insn1 = bfd_get_32 (output_bfd,
7801 contents + rel->r_offset - d_offset);
7802 insn1 &= (1 << 26) - 1;
7803 insn1 |= 32 << 26; /* lwz */
7804 if (offset != (bfd_vma) -1)
7806 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7807 insn2 = 0x7c631214; /* add 3,3,2 */
7808 bfd_put_32 (output_bfd, insn2, contents + offset);
7810 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7811 + R_PPC_GOT_TPREL16);
7812 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7817 insn1 = 0x3c620000; /* addis 3,2,0 */
7820 /* Was an LD reloc. */
7822 r_symndx < symtab_hdr->sh_info;
7824 if (local_sections[r_symndx] == sec)
7826 if (r_symndx >= symtab_hdr->sh_info)
7827 r_symndx = STN_UNDEF;
7828 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7829 if (r_symndx != STN_UNDEF)
7830 rel->r_addend -= (local_syms[r_symndx].st_value
7831 + sec->output_offset
7832 + sec->output_section->vma);
7834 r_type = R_PPC_TPREL16_HA;
7835 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7836 if (offset != (bfd_vma) -1)
7838 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7839 rel[1].r_offset = offset + d_offset;
7840 rel[1].r_addend = rel->r_addend;
7841 insn2 = 0x38630000; /* addi 3,3,0 */
7842 bfd_put_32 (output_bfd, insn2, contents + offset);
7845 bfd_put_32 (output_bfd, insn1,
7846 contents + rel->r_offset - d_offset);
7849 /* We changed the symbol on an LD reloc. Start over
7850 in order to get h, sym, sec etc. right. */
7858 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7861 bfd_vma offset = rel->r_offset;
7863 if ((tls_mask & TLS_TPRELGD) != 0)
7866 r_type = R_PPC_NONE;
7867 insn2 = 0x7c631214; /* add 3,3,2 */
7872 r_type = R_PPC_TPREL16_LO;
7873 rel->r_offset += d_offset;
7874 insn2 = 0x38630000; /* addi 3,3,0 */
7876 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7877 bfd_put_32 (output_bfd, insn2, contents + offset);
7878 /* Zap the reloc on the _tls_get_addr call too. */
7879 BFD_ASSERT (offset == rel[1].r_offset);
7880 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7885 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7890 r_symndx < symtab_hdr->sh_info;
7892 if (local_sections[r_symndx] == sec)
7894 if (r_symndx >= symtab_hdr->sh_info)
7895 r_symndx = STN_UNDEF;
7896 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7897 if (r_symndx != STN_UNDEF)
7898 rel->r_addend -= (local_syms[r_symndx].st_value
7899 + sec->output_offset
7900 + sec->output_section->vma);
7902 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7903 rel->r_offset += d_offset;
7904 insn2 = 0x38630000; /* addi 3,3,0 */
7905 bfd_put_32 (output_bfd, insn2,
7906 contents + rel->r_offset - d_offset);
7907 /* Zap the reloc on the _tls_get_addr call too. */
7908 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
7909 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7916 /* Handle other relocations that tweak non-addend part of insn. */
7923 /* Branch taken prediction relocations. */
7924 case R_PPC_ADDR14_BRTAKEN:
7925 case R_PPC_REL14_BRTAKEN:
7926 branch_bit = BRANCH_PREDICT_BIT;
7929 /* Branch not taken prediction relocations. */
7930 case R_PPC_ADDR14_BRNTAKEN:
7931 case R_PPC_REL14_BRNTAKEN:
7935 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7936 insn &= ~BRANCH_PREDICT_BIT;
7939 from = (rel->r_offset
7940 + input_section->output_offset
7941 + input_section->output_section->vma);
7943 /* Invert 'y' bit if not the default. */
7944 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7945 insn ^= BRANCH_PREDICT_BIT;
7947 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7953 if (!htab->is_vxworks)
7955 struct plt_entry *ent;
7959 if (h->type == STT_GNU_IFUNC)
7960 ifunc = &h->plt.plist;
7962 else if (local_got_offsets != NULL
7963 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
7965 struct plt_entry **local_plt;
7967 local_plt = (struct plt_entry **) (local_got_offsets
7968 + symtab_hdr->sh_info);
7969 ifunc = local_plt + r_symndx;
7975 || is_branch_reloc (r_type)))
7978 if (r_type == R_PPC_PLTREL24 && info->shared)
7979 addend = rel->r_addend;
7980 ent = find_plt_ent (ifunc, got2, addend);
7984 if (h == NULL && (ent->plt.offset & 1) == 0)
7986 Elf_Internal_Rela rela;
7989 rela.r_offset = (htab->iplt->output_section->vma
7990 + htab->iplt->output_offset
7992 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
7993 rela.r_addend = relocation;
7994 loc = htab->reliplt->contents;
7995 loc += (htab->reliplt->reloc_count++
7996 * sizeof (Elf32_External_Rela));
7997 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
7999 ent->plt.offset |= 1;
8001 if (h == NULL && (ent->glink_offset & 1) == 0)
8003 unsigned char *p = ((unsigned char *) htab->glink->contents
8004 + ent->glink_offset);
8005 write_glink_stub (ent, htab->iplt, p, info);
8006 ent->glink_offset |= 1;
8009 unresolved_reloc = FALSE;
8010 if (htab->plt_type == PLT_NEW
8011 || !htab->elf.dynamic_sections_created
8013 || h->dynindx == -1)
8014 relocation = (htab->glink->output_section->vma
8015 + htab->glink->output_offset
8016 + (ent->glink_offset & ~1));
8018 relocation = (htab->plt->output_section->vma
8019 + htab->plt->output_offset
8024 addend = rel->r_addend;
8027 if (r_type < R_PPC_max)
8028 howto = ppc_elf_howto_table[r_type];
8032 info->callbacks->einfo
8033 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8034 input_bfd, (int) r_type, sym_name);
8036 bfd_set_error (bfd_error_bad_value);
8044 case R_PPC_EMB_MRKREF:
8045 case R_PPC_GNU_VTINHERIT:
8046 case R_PPC_GNU_VTENTRY:
8049 /* GOT16 relocations. Like an ADDR16 using the symbol's
8050 address in the GOT as relocation value instead of the
8051 symbol's value itself. Also, create a GOT entry for the
8052 symbol and put the symbol value there. */
8053 case R_PPC_GOT_TLSGD16:
8054 case R_PPC_GOT_TLSGD16_LO:
8055 case R_PPC_GOT_TLSGD16_HI:
8056 case R_PPC_GOT_TLSGD16_HA:
8057 tls_type = TLS_TLS | TLS_GD;
8060 case R_PPC_GOT_TLSLD16:
8061 case R_PPC_GOT_TLSLD16_LO:
8062 case R_PPC_GOT_TLSLD16_HI:
8063 case R_PPC_GOT_TLSLD16_HA:
8064 tls_type = TLS_TLS | TLS_LD;
8067 case R_PPC_GOT_TPREL16:
8068 case R_PPC_GOT_TPREL16_LO:
8069 case R_PPC_GOT_TPREL16_HI:
8070 case R_PPC_GOT_TPREL16_HA:
8071 tls_type = TLS_TLS | TLS_TPREL;
8074 case R_PPC_GOT_DTPREL16:
8075 case R_PPC_GOT_DTPREL16_LO:
8076 case R_PPC_GOT_DTPREL16_HI:
8077 case R_PPC_GOT_DTPREL16_HA:
8078 tls_type = TLS_TLS | TLS_DTPREL;
8082 case R_PPC_GOT16_LO:
8083 case R_PPC_GOT16_HI:
8084 case R_PPC_GOT16_HA:
8088 /* Relocation is to the entry for this symbol in the global
8094 if (htab->got == NULL)
8098 if (tls_type == (TLS_TLS | TLS_LD)
8100 || !h->def_dynamic))
8101 offp = &htab->tlsld_got.offset;
8105 dyn = htab->elf.dynamic_sections_created;
8106 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8108 && SYMBOL_REFERENCES_LOCAL (info, h)))
8109 /* This is actually a static link, or it is a
8110 -Bsymbolic link and the symbol is defined
8111 locally, or the symbol was forced to be local
8112 because of a version file. */
8116 BFD_ASSERT (h->dynindx != -1);
8118 unresolved_reloc = FALSE;
8120 offp = &h->got.offset;
8124 if (local_got_offsets == NULL)
8126 offp = &local_got_offsets[r_symndx];
8129 /* The offset must always be a multiple of 4. We use the
8130 least significant bit to record whether we have already
8131 processed this entry. */
8137 unsigned int tls_m = (tls_mask
8138 & (TLS_LD | TLS_GD | TLS_DTPREL
8139 | TLS_TPREL | TLS_TPRELGD));
8141 if (offp == &htab->tlsld_got.offset)
8147 /* We might have multiple got entries for this sym.
8148 Initialize them all. */
8153 if ((tls_m & TLS_LD) != 0)
8155 tls_ty = TLS_TLS | TLS_LD;
8158 else if ((tls_m & TLS_GD) != 0)
8160 tls_ty = TLS_TLS | TLS_GD;
8163 else if ((tls_m & TLS_DTPREL) != 0)
8165 tls_ty = TLS_TLS | TLS_DTPREL;
8166 tls_m &= ~TLS_DTPREL;
8168 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8170 tls_ty = TLS_TLS | TLS_TPREL;
8174 /* Generate relocs for the dynamic linker. */
8175 if ((info->shared || indx != 0)
8176 && (offp == &htab->tlsld_got.offset
8178 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8179 || h->root.type != bfd_link_hash_undefweak))
8181 asection *rsec = htab->relgot;
8185 rsec = htab->reliplt;
8186 outrel.r_offset = (htab->got->output_section->vma
8187 + htab->got->output_offset
8189 outrel.r_addend = 0;
8190 if (tls_ty & (TLS_LD | TLS_GD))
8192 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8193 if (tls_ty == (TLS_TLS | TLS_GD))
8195 loc = rsec->contents;
8196 loc += (rsec->reloc_count++
8197 * sizeof (Elf32_External_Rela));
8198 bfd_elf32_swap_reloca_out (output_bfd,
8200 outrel.r_offset += 4;
8202 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8205 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8206 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8207 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8208 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8210 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8211 else if (ifunc != NULL)
8212 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8214 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8215 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8217 outrel.r_addend += relocation;
8218 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8219 outrel.r_addend -= htab->elf.tls_sec->vma;
8221 loc = rsec->contents;
8222 loc += (rsec->reloc_count++
8223 * sizeof (Elf32_External_Rela));
8224 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8227 /* Init the .got section contents if we're not
8228 emitting a reloc. */
8231 bfd_vma value = relocation;
8233 if (tls_ty == (TLS_TLS | TLS_LD))
8235 else if (tls_ty != 0)
8237 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8238 if (tls_ty == (TLS_TLS | TLS_TPREL))
8239 value += DTP_OFFSET - TP_OFFSET;
8241 if (tls_ty == (TLS_TLS | TLS_GD))
8243 bfd_put_32 (output_bfd, value,
8244 htab->got->contents + off + 4);
8248 bfd_put_32 (output_bfd, value,
8249 htab->got->contents + off);
8253 if (tls_ty & (TLS_LD | TLS_GD))
8262 if (off >= (bfd_vma) -2)
8265 if ((tls_type & TLS_TLS) != 0)
8267 if (tls_type != (TLS_TLS | TLS_LD))
8269 if ((tls_mask & TLS_LD) != 0
8271 || !h->def_dynamic))
8273 if (tls_type != (TLS_TLS | TLS_GD))
8275 if ((tls_mask & TLS_GD) != 0)
8277 if (tls_type != (TLS_TLS | TLS_DTPREL))
8279 if ((tls_mask & TLS_DTPREL) != 0)
8286 relocation = (htab->got->output_section->vma
8287 + htab->got->output_offset
8289 - SYM_VAL (htab->elf.hgot));
8291 /* Addends on got relocations don't make much sense.
8292 x+off@got is actually x@got+off, and since the got is
8293 generated by a hash table traversal, the value in the
8294 got at entry m+n bears little relation to the entry m. */
8296 info->callbacks->einfo
8297 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8298 input_bfd, input_section, rel->r_offset,
8304 /* Relocations that need no special processing. */
8305 case R_PPC_LOCAL24PC:
8306 /* It makes no sense to point a local relocation
8307 at a symbol not in this object. */
8308 if (unresolved_reloc)
8310 if (! (*info->callbacks->undefined_symbol) (info,
8311 h->root.root.string,
8321 case R_PPC_DTPREL16:
8322 case R_PPC_DTPREL16_LO:
8323 case R_PPC_DTPREL16_HI:
8324 case R_PPC_DTPREL16_HA:
8325 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8328 /* Relocations that may need to be propagated if this is a shared
8331 case R_PPC_TPREL16_LO:
8332 case R_PPC_TPREL16_HI:
8333 case R_PPC_TPREL16_HA:
8335 && h->root.type == bfd_link_hash_undefweak
8336 && h->dynindx == -1)
8338 /* Make this relocation against an undefined weak symbol
8339 resolve to zero. This is really just a tweak, since
8340 code using weak externs ought to check that they are
8341 defined before using them. */
8342 bfd_byte *p = contents + rel->r_offset - d_offset;
8343 unsigned int insn = bfd_get_32 (output_bfd, p);
8344 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8346 bfd_put_32 (output_bfd, insn, p);
8349 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8350 /* The TPREL16 relocs shouldn't really be used in shared
8351 libs as they will result in DT_TEXTREL being set, but
8352 support them anyway. */
8356 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8359 case R_PPC_DTPREL32:
8360 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8363 case R_PPC_DTPMOD32:
8369 case R_PPC_REL16_LO:
8370 case R_PPC_REL16_HI:
8371 case R_PPC_REL16_HA:
8375 if (h == NULL || h == htab->elf.hgot)
8381 case R_PPC_ADDR16_LO:
8382 case R_PPC_ADDR16_HI:
8383 case R_PPC_ADDR16_HA:
8388 case R_PPC_VLE_REL8:
8389 case R_PPC_VLE_REL15:
8390 case R_PPC_VLE_REL24:
8393 case R_PPC_REL14_BRTAKEN:
8394 case R_PPC_REL14_BRNTAKEN:
8395 /* If these relocations are not to a named symbol, they can be
8396 handled right here, no need to bother the dynamic linker. */
8397 if (SYMBOL_CALLS_LOCAL (info, h)
8398 || h == htab->elf.hgot)
8404 case R_PPC_ADDR14_BRTAKEN:
8405 case R_PPC_ADDR14_BRNTAKEN:
8406 if (h != NULL && !info->shared)
8411 if ((input_section->flags & SEC_ALLOC) == 0
8417 && ((h->root.type == bfd_link_hash_undefined
8418 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8419 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8420 || (h->root.type == bfd_link_hash_undefweak
8421 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8422 && (must_be_dyn_reloc (info, r_type)
8423 || !SYMBOL_CALLS_LOCAL (info, h)))
8424 || (ELIMINATE_COPY_RELOCS
8429 && !h->def_regular))
8435 fprintf (stderr, "ppc_elf_relocate_section needs to "
8436 "create relocation for %s\n",
8437 (h && h->root.root.string
8438 ? h->root.root.string : "<unknown>"));
8441 /* When generating a shared object, these relocations
8442 are copied into the output file to be resolved at run
8444 sreloc = elf_section_data (input_section)->sreloc;
8446 sreloc = htab->reliplt;
8451 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8454 if (outrel.r_offset == (bfd_vma) -1
8455 || outrel.r_offset == (bfd_vma) -2)
8456 skip = (int) outrel.r_offset;
8457 outrel.r_offset += (input_section->output_section->vma
8458 + input_section->output_offset);
8461 memset (&outrel, 0, sizeof outrel);
8463 && (h->root.type == bfd_link_hash_undefined
8464 || h->root.type == bfd_link_hash_undefweak))
8465 || !SYMBOL_REFERENCES_LOCAL (info, h))
8467 BFD_ASSERT (h->dynindx != -1);
8468 unresolved_reloc = FALSE;
8469 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8470 outrel.r_addend = rel->r_addend;
8474 outrel.r_addend = relocation + rel->r_addend;
8476 if (r_type != R_PPC_ADDR32)
8482 /* If we get here when building a static
8483 executable, then the libc startup function
8484 responsible for applying indirect function
8485 relocations is going to complain about
8487 If we get here when building a dynamic
8488 executable, it will be because we have
8489 a text relocation. The dynamic loader
8490 will set the text segment writable and
8491 non-executable to apply text relocations.
8492 So we'll segfault when trying to run the
8493 indirection function to resolve the reloc. */
8494 info->callbacks->einfo
8495 (_("%P: %H: relocation %s for indirect "
8496 "function %s unsupported\n"),
8497 input_bfd, input_section, rel->r_offset,
8502 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8504 else if (sec == NULL || sec->owner == NULL)
8506 bfd_set_error (bfd_error_bad_value);
8513 /* We are turning this relocation into one
8514 against a section symbol. It would be
8515 proper to subtract the symbol's value,
8516 osec->vma, from the emitted reloc addend,
8517 but ld.so expects buggy relocs.
8518 FIXME: Why not always use a zero index? */
8519 osec = sec->output_section;
8520 indx = elf_section_data (osec)->dynindx;
8523 osec = htab->elf.text_index_section;
8524 indx = elf_section_data (osec)->dynindx;
8526 BFD_ASSERT (indx != 0);
8529 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8530 indx, osec->name, osec->flags,
8531 h->root.root.string);
8535 outrel.r_info = ELF32_R_INFO (indx, r_type);
8537 else if (ifunc != NULL)
8538 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8540 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8543 loc = sreloc->contents;
8544 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8545 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8550 /* This reloc will be computed at runtime. We clear the memory
8551 so that it contains predictable value. */
8553 && ((input_section->flags & SEC_ALLOC) != 0
8554 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8556 relocation = howto->pc_relative ? outrel.r_offset : 0;
8563 case R_PPC_RELAX_PLT:
8564 case R_PPC_RELAX_PLTREL24:
8567 struct plt_entry *ent;
8568 bfd_vma got2_addend = 0;
8570 if (r_type == R_PPC_RELAX_PLTREL24)
8573 got2_addend = addend;
8576 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8577 if (htab->plt_type == PLT_NEW)
8578 relocation = (htab->glink->output_section->vma
8579 + htab->glink->output_offset
8580 + ent->glink_offset);
8582 relocation = (htab->plt->output_section->vma
8583 + htab->plt->output_offset
8592 size_t insn_offset = rel->r_offset;
8597 relocation -= (input_section->output_section->vma
8598 + input_section->output_offset
8599 + rel->r_offset - 4);
8600 stub = shared_stub_entry;
8601 bfd_put_32 (output_bfd, stub[0], contents + insn_offset - 12);
8602 bfd_put_32 (output_bfd, stub[1], contents + insn_offset - 8);
8603 bfd_put_32 (output_bfd, stub[2], contents + insn_offset - 4);
8605 size = ARRAY_SIZE (shared_stub_entry) - 3;
8610 size = ARRAY_SIZE (stub_entry);
8613 relocation += addend;
8614 if (info->relocatable)
8617 /* First insn is HA, second is LO. */
8619 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8620 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8624 insn |= relocation & 0xffff;
8625 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8633 bfd_put_32 (output_bfd, insn, contents + insn_offset);
8637 /* Rewrite the reloc and convert one of the trailing nop
8638 relocs to describe this relocation. */
8639 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8640 /* The relocs are at the bottom 2 bytes */
8641 rel[0].r_offset += d_offset;
8642 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8643 rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8644 rel[1].r_offset += 4;
8645 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8650 /* Indirect .sdata relocation. */
8651 case R_PPC_EMB_SDAI16:
8652 BFD_ASSERT (htab->sdata[0].section != NULL);
8653 if (!is_static_defined (htab->sdata[0].sym))
8655 unresolved_reloc = TRUE;
8659 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8660 h, relocation, rel);
8664 /* Indirect .sdata2 relocation. */
8665 case R_PPC_EMB_SDA2I16:
8666 BFD_ASSERT (htab->sdata[1].section != NULL);
8667 if (!is_static_defined (htab->sdata[1].sym))
8669 unresolved_reloc = TRUE;
8673 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
8674 h, relocation, rel);
8678 /* Handle the TOC16 reloc. We want to use the offset within the .got
8679 section, not the actual VMA. This is appropriate when generating
8680 an embedded ELF object, for which the .got section acts like the
8681 AIX .toc section. */
8682 case R_PPC_TOC16: /* phony GOT16 relocations */
8683 if (sec == NULL || sec->output_section == NULL)
8685 unresolved_reloc = TRUE;
8688 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
8690 || strcmp (bfd_get_section_name (sec->owner, sec),
8693 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
8696 case R_PPC_PLTREL24:
8697 if (h != NULL && ifunc == NULL)
8699 struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
8700 info->shared ? addend : 0);
8702 || htab->plt == NULL)
8704 /* We didn't make a PLT entry for this symbol. This
8705 happens when statically linking PIC code, or when
8706 using -Bsymbolic. */
8710 /* Relocation is to the entry for this symbol in the
8711 procedure linkage table. */
8712 unresolved_reloc = FALSE;
8713 if (htab->plt_type == PLT_NEW)
8714 relocation = (htab->glink->output_section->vma
8715 + htab->glink->output_offset
8716 + ent->glink_offset);
8718 relocation = (htab->plt->output_section->vma
8719 + htab->plt->output_offset
8724 /* R_PPC_PLTREL24 is rather special. If non-zero, the
8725 addend specifies the GOT pointer offset within .got2.
8726 Don't apply it to the relocation field. */
8730 /* Relocate against _SDA_BASE_. */
8731 case R_PPC_SDAREL16:
8734 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
8737 || sec->output_section == NULL
8738 || !is_static_defined (sda))
8740 unresolved_reloc = TRUE;
8743 addend -= SYM_VAL (sda);
8745 name = bfd_get_section_name (output_bfd, sec->output_section);
8746 if (!(strcmp (name, ".sdata") == 0
8747 || strcmp (name, ".sbss") == 0))
8749 info->callbacks->einfo
8750 (_("%P: %B: the target (%s) of a %s relocation is "
8751 "in the wrong output section (%s)\n"),
8760 /* Relocate against _SDA2_BASE_. */
8761 case R_PPC_EMB_SDA2REL:
8764 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
8767 || sec->output_section == NULL
8768 || !is_static_defined (sda))
8770 unresolved_reloc = TRUE;
8773 addend -= SYM_VAL (sda);
8775 name = bfd_get_section_name (output_bfd, sec->output_section);
8776 if (!(strcmp (name, ".sdata2") == 0
8777 || strcmp (name, ".sbss2") == 0))
8779 info->callbacks->einfo
8780 (_("%P: %B: the target (%s) of a %s relocation is "
8781 "in the wrong output section (%s)\n"),
8790 case R_PPC_VLE_LO16A:
8791 relocation = relocation + addend;
8792 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8793 relocation, split16a_type);
8796 case R_PPC_VLE_LO16D:
8797 relocation = relocation + addend;
8798 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8799 relocation, split16d_type);
8802 case R_PPC_VLE_HI16A:
8803 relocation = (relocation + addend) >> 16;
8804 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8805 relocation, split16a_type);
8808 case R_PPC_VLE_HI16D:
8809 relocation = (relocation + addend) >> 16;
8810 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8811 relocation, split16d_type);
8814 case R_PPC_VLE_HA16A:
8815 relocation = (relocation + addend + 0x8000) >> 16;
8816 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8817 relocation, split16a_type);
8820 case R_PPC_VLE_HA16D:
8821 relocation = (relocation + addend + 0x8000) >> 16;
8822 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8823 relocation, split16d_type);
8826 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
8827 case R_PPC_EMB_SDA21:
8828 case R_PPC_VLE_SDA21:
8829 case R_PPC_EMB_RELSDA:
8830 case R_PPC_VLE_SDA21_LO:
8835 struct elf_link_hash_entry *sda = NULL;
8837 if (sec == NULL || sec->output_section == NULL)
8839 unresolved_reloc = TRUE;
8843 name = bfd_get_section_name (output_bfd, sec->output_section);
8844 if (strcmp (name, ".sdata") == 0
8845 || strcmp (name, ".sbss") == 0)
8848 sda = htab->sdata[0].sym;
8850 else if (strcmp (name, ".sdata2") == 0
8851 || strcmp (name, ".sbss2") == 0)
8854 sda = htab->sdata[1].sym;
8856 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
8857 || strcmp (name, ".PPC.EMB.sbss0") == 0)
8863 info->callbacks->einfo
8864 (_("%P: %B: the target (%s) of a %s relocation is "
8865 "in the wrong output section (%s)\n"),
8871 bfd_set_error (bfd_error_bad_value);
8878 if (!is_static_defined (sda))
8880 unresolved_reloc = TRUE;
8883 addend -= SYM_VAL (sda);
8886 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8888 && (r_type == R_PPC_VLE_SDA21
8889 || r_type == R_PPC_VLE_SDA21_LO))
8891 relocation = relocation + addend;
8894 /* Force e_li insn, keeping RT from original insn. */
8898 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
8899 /* Top 4 bits of value to 17..20. */
8900 insn |= (relocation & 0xf0000) >> 5;
8901 /* Next 5 bits of the value to 11..15. */
8902 insn |= (relocation & 0xf800) << 5;
8903 /* And the final 11 bits of the value to bits 21 to 31. */
8904 insn |= relocation & 0x7ff;
8906 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8908 if (r_type == R_PPC_VLE_SDA21
8909 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
8913 else if (r_type == R_PPC_EMB_SDA21
8914 || r_type == R_PPC_VLE_SDA21
8915 || r_type == R_PPC_VLE_SDA21_LO)
8917 /* Fill in register field. */
8918 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
8920 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8924 case R_PPC_VLE_SDAREL_LO16A:
8925 case R_PPC_VLE_SDAREL_LO16D:
8926 case R_PPC_VLE_SDAREL_HI16A:
8927 case R_PPC_VLE_SDAREL_HI16D:
8928 case R_PPC_VLE_SDAREL_HA16A:
8929 case R_PPC_VLE_SDAREL_HA16D:
8934 struct elf_link_hash_entry *sda = NULL;
8936 if (sec == NULL || sec->output_section == NULL)
8938 unresolved_reloc = TRUE;
8942 name = bfd_get_section_name (output_bfd, sec->output_section);
8943 if (strcmp (name, ".sdata") == 0
8944 || strcmp (name, ".sbss") == 0)
8947 sda = htab->sdata[0].sym;
8949 else if (strcmp (name, ".sdata2") == 0
8950 || strcmp (name, ".sbss2") == 0)
8953 sda = htab->sdata[1].sym;
8957 (*_bfd_error_handler)
8958 (_("%B: the target (%s) of a %s relocation is "
8959 "in the wrong output section (%s)"),
8965 bfd_set_error (bfd_error_bad_value);
8972 if (!is_static_defined (sda))
8974 unresolved_reloc = TRUE;
8979 value = (sda->root.u.def.section->output_section->vma
8980 + sda->root.u.def.section->output_offset
8983 if (r_type == R_PPC_VLE_SDAREL_LO16A)
8984 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8985 value, split16a_type);
8986 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
8987 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8988 value, split16d_type);
8989 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
8991 value = value >> 16;
8992 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8993 value, split16a_type);
8995 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
8997 value = value >> 16;
8998 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
8999 value, split16d_type);
9001 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9003 value = (value + 0x8000) >> 16;
9004 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9005 value, split16a_type);
9007 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9009 value = (value + 0x8000) >> 16;
9010 ppc_elf_vle_split16 (output_bfd, contents + rel->r_offset,
9011 value, split16d_type);
9016 /* Relocate against the beginning of the section. */
9018 case R_PPC_SECTOFF_LO:
9019 case R_PPC_SECTOFF_HI:
9020 case R_PPC_SECTOFF_HA:
9021 if (sec == NULL || sec->output_section == NULL)
9023 unresolved_reloc = TRUE;
9026 addend -= sec->output_section->vma;
9029 /* Negative relocations. */
9030 case R_PPC_EMB_NADDR32:
9031 case R_PPC_EMB_NADDR16:
9032 case R_PPC_EMB_NADDR16_LO:
9033 case R_PPC_EMB_NADDR16_HI:
9034 case R_PPC_EMB_NADDR16_HA:
9035 addend -= 2 * relocation;
9039 case R_PPC_GLOB_DAT:
9040 case R_PPC_JMP_SLOT:
9041 case R_PPC_RELATIVE:
9042 case R_PPC_IRELATIVE:
9044 case R_PPC_PLTREL32:
9045 case R_PPC_PLT16_LO:
9046 case R_PPC_PLT16_HI:
9047 case R_PPC_PLT16_HA:
9049 case R_PPC_EMB_RELSEC16:
9050 case R_PPC_EMB_RELST_LO:
9051 case R_PPC_EMB_RELST_HI:
9052 case R_PPC_EMB_RELST_HA:
9053 case R_PPC_EMB_BIT_FLD:
9054 info->callbacks->einfo
9055 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9060 bfd_set_error (bfd_error_invalid_operation);
9065 /* Do any further special processing. */
9071 case R_PPC_ADDR16_HA:
9072 case R_PPC_REL16_HA:
9073 case R_PPC_SECTOFF_HA:
9074 case R_PPC_TPREL16_HA:
9075 case R_PPC_DTPREL16_HA:
9076 case R_PPC_EMB_NADDR16_HA:
9077 case R_PPC_EMB_RELST_HA:
9078 /* It's just possible that this symbol is a weak symbol
9079 that's not actually defined anywhere. In that case,
9080 'sec' would be NULL, and we should leave the symbol
9081 alone (it will be set to zero elsewhere in the link). */
9086 case R_PPC_PLT16_HA:
9087 case R_PPC_GOT16_HA:
9088 case R_PPC_GOT_TLSGD16_HA:
9089 case R_PPC_GOT_TLSLD16_HA:
9090 case R_PPC_GOT_TPREL16_HA:
9091 case R_PPC_GOT_DTPREL16_HA:
9092 /* Add 0x10000 if sign bit in 0:15 is set.
9093 Bits 0:15 are not used. */
9098 case R_PPC_ADDR16_LO:
9100 case R_PPC_GOT16_LO:
9101 case R_PPC_SDAREL16:
9103 case R_PPC_SECTOFF_LO:
9104 case R_PPC_DTPREL16:
9105 case R_PPC_DTPREL16_LO:
9107 case R_PPC_TPREL16_LO:
9108 case R_PPC_GOT_TLSGD16:
9109 case R_PPC_GOT_TLSGD16_LO:
9110 case R_PPC_GOT_TLSLD16:
9111 case R_PPC_GOT_TLSLD16_LO:
9112 case R_PPC_GOT_DTPREL16:
9113 case R_PPC_GOT_DTPREL16_LO:
9114 case R_PPC_GOT_TPREL16:
9115 case R_PPC_GOT_TPREL16_LO:
9117 /* The 32-bit ABI lacks proper relocations to deal with
9118 certain 64-bit instructions. Prevent damage to bits
9119 that make up part of the insn opcode. */
9120 unsigned int insn, mask, lobit;
9122 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
9124 if (is_insn_ds_form (insn))
9126 else if (is_insn_dq_form (insn))
9130 lobit = mask & (relocation + addend);
9134 info->callbacks->einfo
9135 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9136 input_bfd, input_section, rel->r_offset,
9137 howto->name, sym_name, mask + 1);
9138 bfd_set_error (bfd_error_bad_value);
9141 addend += insn & mask;
9147 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9148 "offset = %ld, addend = %ld\n",
9153 (long) rel->r_offset,
9157 if (unresolved_reloc
9158 && !((input_section->flags & SEC_DEBUGGING) != 0
9160 && _bfd_elf_section_offset (output_bfd, info, input_section,
9161 rel->r_offset) != (bfd_vma) -1)
9163 info->callbacks->einfo
9164 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9165 input_bfd, input_section, rel->r_offset,
9171 /* 16-bit fields in insns mostly have signed values, but a
9172 few insns have 16-bit unsigned values. Really, we should
9173 have different reloc types. */
9174 if (howto->complain_on_overflow != complain_overflow_dont
9175 && howto->dst_mask == 0xffff
9176 && (input_section->flags & SEC_CODE) != 0)
9178 enum complain_overflow complain = complain_overflow_signed;
9180 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9184 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9185 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9186 complain = complain_overflow_bitfield;
9187 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9188 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9189 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9190 complain = complain_overflow_unsigned;
9192 if (howto->complain_on_overflow != complain)
9195 alt_howto.complain_on_overflow = complain;
9200 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9201 rel->r_offset, relocation, addend);
9203 if (r != bfd_reloc_ok)
9205 if (r == bfd_reloc_overflow)
9211 && h->root.type == bfd_link_hash_undefweak
9212 && howto->pc_relative)
9214 /* Assume this is a call protected by other code that
9215 detect the symbol is undefined. If this is the case,
9216 we can safely ignore the overflow. If not, the
9217 program is hosed anyway, and a little warning isn't
9223 if (! (*info->callbacks->reloc_overflow) (info,
9224 (h ? &h->root : NULL),
9235 info->callbacks->einfo
9236 (_("%P: %H: %s reloc against `%s': error %d\n"),
9237 input_bfd, input_section, rel->r_offset,
9238 howto->name, sym_name, (int) r);
9245 fprintf (stderr, "\n");
9248 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9249 && input_section->size != input_section->rawsize
9250 && (strcmp (input_section->output_section->name, ".init") == 0
9251 || strcmp (input_section->output_section->name, ".fini") == 0))
9253 /* Branch around the trampolines. */
9254 unsigned int insn = B + input_section->size - input_section->rawsize;
9255 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9258 if (htab->params->ppc476_workaround
9259 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9260 && (!info->relocatable
9261 || (input_section->output_section->alignment_power
9262 >= htab->params->pagesize_p2)))
9264 struct ppc_elf_relax_info *relax_info;
9265 bfd_vma start_addr, end_addr, addr;
9266 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9268 relax_info = elf_section_data (input_section)->sec_info;
9269 if (relax_info->workaround_size != 0)
9275 bfd_put_32 (input_bfd, BA, fill);
9276 p = contents + input_section->size - relax_info->workaround_size;
9277 n = relax_info->workaround_size >> 2;
9280 memcpy (p, fill, 4);
9285 /* The idea is: Replace the last instruction on a page with a
9286 branch to a patch area. Put the insn there followed by a
9287 branch back to the next page. Complicated a little by
9288 needing to handle moved conditional branches, and by not
9289 wanting to touch data-in-text. */
9291 start_addr = (input_section->output_section->vma
9292 + input_section->output_offset);
9293 end_addr = (start_addr + input_section->size
9294 - relax_info->workaround_size);
9295 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9299 bfd_vma offset = addr - start_addr;
9300 Elf_Internal_Rela *lo, *hi;
9301 bfd_boolean is_data;
9302 bfd_vma patch_off, patch_addr;
9305 /* Do we have a data reloc at this offset? If so, leave
9313 rel = lo + (hi - lo) / 2;
9314 if (rel->r_offset < offset)
9316 else if (rel->r_offset > offset + 3)
9320 switch (ELF32_R_TYPE (rel->r_info))
9337 /* Some instructions can be left alone too. Unconditional
9338 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9339 avoid the icache failure.
9341 The problem occurs due to prefetch across a page boundary
9342 where stale instructions can be fetched from the next
9343 page, and the mechanism for flushing these bad
9344 instructions fails under certain circumstances. The
9345 unconditional branches:
9346 1) Branch: b, bl, ba, bla,
9347 2) Branch Conditional: bc, bca, bcl, bcla,
9348 3) Branch Conditional to Link Register: bclr, bclrl,
9349 where (2) and (3) have BO=0x14 making them unconditional,
9350 prevent the bad prefetch because the prefetch itself is
9351 affected by these instructions. This happens even if the
9352 instruction is not executed.
9357 . addi 9,9,new_page@l
9364 The bctr is not predicted taken due to ctr not being
9365 ready, so prefetch continues on past the bctr into the
9366 new page which might have stale instructions. If they
9367 fail to be flushed, then they will be executed after the
9368 bctr executes. Either of the following modifications
9369 prevent the bad prefetch from happening in the first
9372 . lis 9,new_page@ha lis 9,new_page@ha
9373 . addi 9,9,new_page@l addi 9,9,new_page@l
9376 . nop b somewhere_else
9377 . b somewhere_else nop
9378 . new_page: new_page:
9380 insn = bfd_get_32 (input_bfd, contents + offset);
9381 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9382 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9383 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9384 || ((insn & (0x3f << 26)) == (19u << 26)
9385 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9386 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9389 patch_addr = (start_addr + input_section->size
9390 - relax_info->workaround_size);
9391 patch_addr = (patch_addr + 15) & -16;
9392 patch_off = patch_addr - start_addr;
9393 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9396 && rel->r_offset >= offset
9397 && rel->r_offset < offset + 4)
9399 /* If the insn we are patching had a reloc, adjust the
9400 reloc r_offset so that the reloc applies to the moved
9401 location. This matters for -r and --emit-relocs. */
9402 if (rel + 1 != relend)
9404 Elf_Internal_Rela tmp = *rel;
9406 /* Keep the relocs sorted by r_offset. */
9407 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9410 relend[-1].r_offset += patch_off - offset;
9415 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9416 && (insn & 2) == 0 /* relative */)
9418 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9420 delta += offset - patch_off;
9421 if (info->relocatable && rel != NULL)
9423 if (!info->relocatable && rel != NULL)
9425 enum elf_ppc_reloc_type r_type;
9427 r_type = ELF32_R_TYPE (relend[-1].r_info);
9428 if (r_type == R_PPC_REL14_BRTAKEN)
9429 insn |= BRANCH_PREDICT_BIT;
9430 else if (r_type == R_PPC_REL14_BRNTAKEN)
9431 insn &= ~BRANCH_PREDICT_BIT;
9433 BFD_ASSERT (r_type == R_PPC_REL14);
9435 if ((r_type == R_PPC_REL14_BRTAKEN
9436 || r_type == R_PPC_REL14_BRNTAKEN)
9437 && delta + 0x8000 < 0x10000
9438 && (bfd_signed_vma) delta < 0)
9439 insn ^= BRANCH_PREDICT_BIT;
9441 if (delta + 0x8000 < 0x10000)
9443 bfd_put_32 (input_bfd,
9444 (insn & ~0xfffc) | (delta & 0xfffc),
9445 contents + patch_off);
9447 bfd_put_32 (input_bfd,
9448 B | ((offset + 4 - patch_off) & 0x3fffffc),
9449 contents + patch_off);
9456 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9458 relend[-1].r_offset += 8;
9459 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9461 bfd_put_32 (input_bfd,
9462 (insn & ~0xfffc) | 8,
9463 contents + patch_off);
9465 bfd_put_32 (input_bfd,
9466 B | ((offset + 4 - patch_off) & 0x3fffffc),
9467 contents + patch_off);
9469 bfd_put_32 (input_bfd,
9470 B | ((delta - 8) & 0x3fffffc),
9471 contents + patch_off);
9477 bfd_put_32 (input_bfd, insn, contents + patch_off);
9479 bfd_put_32 (input_bfd,
9480 B | ((offset + 4 - patch_off) & 0x3fffffc),
9481 contents + patch_off);
9484 BFD_ASSERT (patch_off <= input_section->size);
9485 relax_info->workaround_size = input_section->size - patch_off;
9492 /* Finish up dynamic symbol handling. We set the contents of various
9493 dynamic sections here. */
9496 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9497 struct bfd_link_info *info,
9498 struct elf_link_hash_entry *h,
9499 Elf_Internal_Sym *sym)
9501 struct ppc_elf_link_hash_table *htab;
9502 struct plt_entry *ent;
9503 bfd_boolean doneone;
9506 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9507 h->root.root.string);
9510 htab = ppc_elf_hash_table (info);
9511 BFD_ASSERT (htab->elf.dynobj != NULL);
9514 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9515 if (ent->plt.offset != (bfd_vma) -1)
9519 Elf_Internal_Rela rela;
9521 bfd_vma reloc_index;
9523 if (htab->plt_type == PLT_NEW
9524 || !htab->elf.dynamic_sections_created
9525 || h->dynindx == -1)
9526 reloc_index = ent->plt.offset / 4;
9529 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9530 / htab->plt_slot_size);
9531 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9532 && htab->plt_type == PLT_OLD)
9533 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9536 /* This symbol has an entry in the procedure linkage table.
9538 if (htab->plt_type == PLT_VXWORKS
9539 && htab->elf.dynamic_sections_created
9540 && h->dynindx != -1)
9543 const bfd_vma *plt_entry;
9545 /* The first three entries in .got.plt are reserved. */
9546 got_offset = (reloc_index + 3) * 4;
9548 /* Use the right PLT. */
9549 plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
9550 : ppc_elf_vxworks_plt_entry;
9552 /* Fill in the .plt on VxWorks. */
9555 bfd_put_32 (output_bfd,
9556 plt_entry[0] | PPC_HA (got_offset),
9557 htab->plt->contents + ent->plt.offset + 0);
9558 bfd_put_32 (output_bfd,
9559 plt_entry[1] | PPC_LO (got_offset),
9560 htab->plt->contents + ent->plt.offset + 4);
9564 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
9566 bfd_put_32 (output_bfd,
9567 plt_entry[0] | PPC_HA (got_loc),
9568 htab->plt->contents + ent->plt.offset + 0);
9569 bfd_put_32 (output_bfd,
9570 plt_entry[1] | PPC_LO (got_loc),
9571 htab->plt->contents + ent->plt.offset + 4);
9574 bfd_put_32 (output_bfd, plt_entry[2],
9575 htab->plt->contents + ent->plt.offset + 8);
9576 bfd_put_32 (output_bfd, plt_entry[3],
9577 htab->plt->contents + ent->plt.offset + 12);
9579 /* This instruction is an immediate load. The value loaded is
9580 the byte offset of the R_PPC_JMP_SLOT relocation from the
9581 start of the .rela.plt section. The value is stored in the
9582 low-order 16 bits of the load instruction. */
9583 /* NOTE: It appears that this is now an index rather than a
9584 prescaled offset. */
9585 bfd_put_32 (output_bfd,
9586 plt_entry[4] | reloc_index,
9587 htab->plt->contents + ent->plt.offset + 16);
9588 /* This instruction is a PC-relative branch whose target is
9589 the start of the PLT section. The address of this branch
9590 instruction is 20 bytes beyond the start of this PLT entry.
9591 The address is encoded in bits 6-29, inclusive. The value
9592 stored is right-shifted by two bits, permitting a 26-bit
9594 bfd_put_32 (output_bfd,
9596 | (-(ent->plt.offset + 20) & 0x03fffffc)),
9597 htab->plt->contents + ent->plt.offset + 20);
9598 bfd_put_32 (output_bfd, plt_entry[6],
9599 htab->plt->contents + ent->plt.offset + 24);
9600 bfd_put_32 (output_bfd, plt_entry[7],
9601 htab->plt->contents + ent->plt.offset + 28);
9603 /* Fill in the GOT entry corresponding to this PLT slot with
9604 the address immediately after the "bctr" instruction
9605 in this PLT entry. */
9606 bfd_put_32 (output_bfd, (htab->plt->output_section->vma
9607 + htab->plt->output_offset
9608 + ent->plt.offset + 16),
9609 htab->sgotplt->contents + got_offset);
9613 /* Fill in a couple of entries in .rela.plt.unloaded. */
9614 loc = htab->srelplt2->contents
9615 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
9616 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
9617 * sizeof (Elf32_External_Rela));
9619 /* Provide the @ha relocation for the first instruction. */
9620 rela.r_offset = (htab->plt->output_section->vma
9621 + htab->plt->output_offset
9622 + ent->plt.offset + 2);
9623 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9625 rela.r_addend = got_offset;
9626 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9627 loc += sizeof (Elf32_External_Rela);
9629 /* Provide the @l relocation for the second instruction. */
9630 rela.r_offset = (htab->plt->output_section->vma
9631 + htab->plt->output_offset
9632 + ent->plt.offset + 6);
9633 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
9635 rela.r_addend = got_offset;
9636 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9637 loc += sizeof (Elf32_External_Rela);
9639 /* Provide a relocation for the GOT entry corresponding to this
9640 PLT slot. Point it at the middle of the .plt entry. */
9641 rela.r_offset = (htab->sgotplt->output_section->vma
9642 + htab->sgotplt->output_offset
9644 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
9646 rela.r_addend = ent->plt.offset + 16;
9647 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9650 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
9651 In particular, the offset for the relocation is not the
9652 address of the PLT entry for this function, as specified
9653 by the ABI. Instead, the offset is set to the address of
9654 the GOT slot for this function. See EABI 4.4.4.1. */
9655 rela.r_offset = (htab->sgotplt->output_section->vma
9656 + htab->sgotplt->output_offset
9662 asection *splt = htab->plt;
9663 if (!htab->elf.dynamic_sections_created
9664 || h->dynindx == -1)
9667 rela.r_offset = (splt->output_section->vma
9668 + splt->output_offset
9670 if (htab->plt_type == PLT_OLD
9671 || !htab->elf.dynamic_sections_created
9672 || h->dynindx == -1)
9674 /* We don't need to fill in the .plt. The ppc dynamic
9675 linker will fill it in. */
9679 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
9680 + htab->glink->output_section->vma
9681 + htab->glink->output_offset);
9682 bfd_put_32 (output_bfd, val,
9683 splt->contents + ent->plt.offset);
9687 /* Fill in the entry in the .rela.plt section. */
9689 if (!htab->elf.dynamic_sections_created
9690 || h->dynindx == -1)
9692 BFD_ASSERT (h->type == STT_GNU_IFUNC
9694 && (h->root.type == bfd_link_hash_defined
9695 || h->root.type == bfd_link_hash_defweak));
9696 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
9697 rela.r_addend = SYM_VAL (h);
9700 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
9702 if (!htab->elf.dynamic_sections_created
9703 || h->dynindx == -1)
9704 loc = (htab->reliplt->contents
9705 + (htab->reliplt->reloc_count++
9706 * sizeof (Elf32_External_Rela)));
9708 loc = (htab->relplt->contents
9709 + reloc_index * sizeof (Elf32_External_Rela));
9710 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9712 if (!h->def_regular)
9714 /* Mark the symbol as undefined, rather than as
9715 defined in the .plt section. Leave the value if
9716 there were any relocations where pointer equality
9717 matters (this is a clue for the dynamic linker, to
9718 make function pointer comparisons work between an
9719 application and shared library), otherwise set it
9721 sym->st_shndx = SHN_UNDEF;
9722 if (!h->pointer_equality_needed)
9724 else if (!h->ref_regular_nonweak)
9726 /* This breaks function pointer comparisons, but
9727 that is better than breaking tests for a NULL
9728 function pointer. */
9732 else if (h->type == STT_GNU_IFUNC
9735 /* Set the value of ifunc symbols in a non-pie
9736 executable to the glink entry. This is to avoid
9737 text relocations. We can't do this for ifunc in
9738 allocate_dynrelocs, as we do for normal dynamic
9739 function symbols with plt entries, because we need
9740 to keep the original value around for the ifunc
9742 sym->st_shndx = (_bfd_elf_section_from_bfd_section
9743 (output_bfd, htab->glink->output_section));
9744 sym->st_value = (ent->glink_offset
9745 + htab->glink->output_offset
9746 + htab->glink->output_section->vma);
9751 if (htab->plt_type == PLT_NEW
9752 || !htab->elf.dynamic_sections_created
9753 || h->dynindx == -1)
9756 asection *splt = htab->plt;
9757 if (!htab->elf.dynamic_sections_created
9758 || h->dynindx == -1)
9761 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
9763 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
9765 bfd_put_32 (output_bfd, LWZ_11_3, p);
9767 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
9769 bfd_put_32 (output_bfd, MR_0_3, p);
9771 bfd_put_32 (output_bfd, CMPWI_11_0, p);
9773 bfd_put_32 (output_bfd, ADD_3_12_2, p);
9775 bfd_put_32 (output_bfd, BEQLR, p);
9777 bfd_put_32 (output_bfd, MR_3_0, p);
9779 bfd_put_32 (output_bfd, NOP, p);
9783 write_glink_stub (ent, splt, p, info);
9786 /* We only need one non-PIC glink stub. */
9796 Elf_Internal_Rela rela;
9799 /* This symbols needs a copy reloc. Set it up. */
9802 fprintf (stderr, ", copy");
9805 BFD_ASSERT (h->dynindx != -1);
9807 if (ppc_elf_hash_entry (h)->has_sda_refs)
9811 BFD_ASSERT (s != NULL);
9813 rela.r_offset = SYM_VAL (h);
9814 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
9816 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
9817 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
9821 fprintf (stderr, "\n");
9827 static enum elf_reloc_type_class
9828 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
9829 const asection *rel_sec,
9830 const Elf_Internal_Rela *rela)
9832 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
9834 if (rel_sec == htab->reliplt)
9835 return reloc_class_ifunc;
9837 switch (ELF32_R_TYPE (rela->r_info))
9839 case R_PPC_RELATIVE:
9840 return reloc_class_relative;
9841 case R_PPC_JMP_SLOT:
9842 return reloc_class_plt;
9844 return reloc_class_copy;
9846 return reloc_class_normal;
9850 /* Finish up the dynamic sections. */
9853 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
9854 struct bfd_link_info *info)
9858 struct ppc_elf_link_hash_table *htab;
9861 bfd_boolean ret = TRUE;
9864 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
9867 htab = ppc_elf_hash_table (info);
9868 dynobj = elf_hash_table (info)->dynobj;
9869 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9870 if (htab->is_vxworks)
9871 splt = bfd_get_linker_section (dynobj, ".plt");
9876 if (htab->elf.hgot != NULL)
9877 got = SYM_VAL (htab->elf.hgot);
9879 if (htab->elf.dynamic_sections_created)
9881 Elf32_External_Dyn *dyncon, *dynconend;
9883 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
9885 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9886 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9887 for (; dyncon < dynconend; dyncon++)
9889 Elf_Internal_Dyn dyn;
9892 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9897 if (htab->is_vxworks)
9901 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9905 dyn.d_un.d_val = htab->relplt->size;
9910 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9914 dyn.d_un.d_ptr = got;
9918 if (htab->is_vxworks)
9921 dyn.d_un.d_ptr -= htab->relplt->size;
9927 if (htab->is_vxworks
9928 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9933 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9937 if (htab->got != NULL)
9939 if (htab->elf.hgot->root.u.def.section == htab->got
9940 || htab->elf.hgot->root.u.def.section == htab->sgotplt)
9942 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
9944 p += htab->elf.hgot->root.u.def.value;
9945 if (htab->plt_type == PLT_OLD)
9947 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
9948 so that a function can easily find the address of
9949 _GLOBAL_OFFSET_TABLE_. */
9950 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
9951 < htab->elf.hgot->root.u.def.section->size);
9952 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
9957 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
9958 BFD_ASSERT (htab->elf.hgot->root.u.def.value
9959 < htab->elf.hgot->root.u.def.section->size);
9960 bfd_put_32 (output_bfd, val, p);
9965 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
9966 htab->elf.hgot->root.root.string,
9967 (htab->sgotplt != NULL
9968 ? htab->sgotplt->name : htab->got->name));
9969 bfd_set_error (bfd_error_bad_value);
9973 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
9976 /* Fill in the first entry in the VxWorks procedure linkage table. */
9977 if (splt && splt->size > 0)
9979 /* Use the right PLT. */
9980 const bfd_vma *plt_entry = (info->shared
9981 ? ppc_elf_vxworks_pic_plt0_entry
9982 : ppc_elf_vxworks_plt0_entry);
9986 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
9988 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
9989 splt->contents + 0);
9990 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
9991 splt->contents + 4);
9995 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
9996 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
9998 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
9999 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10000 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10001 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10002 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10003 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10005 if (! info->shared)
10007 Elf_Internal_Rela rela;
10010 loc = htab->srelplt2->contents;
10012 /* Output the @ha relocation for the first instruction. */
10013 rela.r_offset = (htab->plt->output_section->vma
10014 + htab->plt->output_offset
10016 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10018 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10019 loc += sizeof (Elf32_External_Rela);
10021 /* Output the @l relocation for the second instruction. */
10022 rela.r_offset = (htab->plt->output_section->vma
10023 + htab->plt->output_offset
10025 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10027 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10028 loc += sizeof (Elf32_External_Rela);
10030 /* Fix up the remaining relocations. They may have the wrong
10031 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10032 in which symbols were output. */
10033 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10035 Elf_Internal_Rela rel;
10037 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10038 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10039 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10040 loc += sizeof (Elf32_External_Rela);
10042 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10043 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10044 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10045 loc += sizeof (Elf32_External_Rela);
10047 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10048 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10049 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10050 loc += sizeof (Elf32_External_Rela);
10055 if (htab->glink != NULL
10056 && htab->glink->contents != NULL
10057 && htab->elf.dynamic_sections_created)
10060 unsigned char *endp;
10065 * PIC glink code is the following:
10067 * # ith PLT code stub.
10068 * addis 11,30,(plt+(i-1)*4-got)@ha
10069 * lwz 11,(plt+(i-1)*4-got)@l(11)
10073 * # A table of branches, one for each plt entry.
10074 * # The idea is that the plt call stub loads ctr and r11 with these
10075 * # addresses, so (r11 - res_0) gives the plt index * 4.
10076 * res_0: b PLTresolve
10077 * res_1: b PLTresolve
10079 * # Some number of entries towards the end can be nops
10085 * addis 11,11,(1f-res_0)@ha
10088 * 1: addi 11,11,(1b-res_0)@l
10091 * sub 11,11,12 # r11 = index * 4
10092 * addis 12,12,(got+4-1b)@ha
10093 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10094 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10097 * add 11,0,11 # r11 = index * 12 = reloc offset.
10100 static const unsigned int pic_plt_resolve[] =
10121 * Non-PIC glink code is a little simpler.
10123 * # ith PLT code stub.
10124 * lis 11,(plt+(i-1)*4)@ha
10125 * lwz 11,(plt+(i-1)*4)@l(11)
10129 * The branch table is the same, then comes
10132 * lis 12,(got+4)@ha
10133 * addis 11,11,(-res_0)@ha
10134 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10135 * addi 11,11,(-res_0)@l # r11 = index * 4
10138 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10139 * add 11,0,11 # r11 = index * 12 = reloc offset.
10142 static const unsigned int plt_resolve[] =
10162 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10164 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10167 /* Build the branch table, one for each plt entry (less one),
10168 and perhaps some padding. */
10169 p = htab->glink->contents;
10170 p += htab->glink_pltresolve;
10171 endp = htab->glink->contents;
10172 endp += htab->glink->size - GLINK_PLTRESOLVE;
10173 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10175 bfd_put_32 (output_bfd, B + endp - p, p);
10180 bfd_put_32 (output_bfd, NOP, p);
10184 res0 = (htab->glink_pltresolve
10185 + htab->glink->output_section->vma
10186 + htab->glink->output_offset);
10188 if (htab->params->ppc476_workaround)
10190 /* Ensure that a call stub at the end of a page doesn't
10191 result in prefetch over the end of the page into the
10192 glink branch table. */
10193 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10195 bfd_vma glink_start = (htab->glink->output_section->vma
10196 + htab->glink->output_offset);
10198 for (page_addr = res0 & -pagesize;
10199 page_addr > glink_start;
10200 page_addr -= pagesize)
10202 /* We have a plt call stub that may need fixing. */
10206 loc = htab->glink->contents + page_addr - 4 - glink_start;
10207 insn = bfd_get_32 (output_bfd, loc);
10210 /* By alignment, we know that there must be at least
10211 one other call stub before this one. */
10212 insn = bfd_get_32 (output_bfd, loc - 16);
10214 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10216 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10221 /* Last comes the PLTresolve stub. */
10226 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10228 unsigned int insn = pic_plt_resolve[i];
10230 if (htab->params->ppc476_workaround && insn == NOP)
10232 bfd_put_32 (output_bfd, insn, p);
10235 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10237 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10238 + htab->glink->output_section->vma
10239 + htab->glink->output_offset);
10241 bfd_put_32 (output_bfd,
10242 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10243 bfd_put_32 (output_bfd,
10244 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10245 bfd_put_32 (output_bfd,
10246 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10247 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10249 bfd_put_32 (output_bfd,
10250 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10251 bfd_put_32 (output_bfd,
10252 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10256 bfd_put_32 (output_bfd,
10257 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10258 bfd_put_32 (output_bfd,
10259 LWZ_12_12 + 4, p + 9*4);
10264 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10266 unsigned int insn = plt_resolve[i];
10268 if (htab->params->ppc476_workaround && insn == NOP)
10270 bfd_put_32 (output_bfd, insn, p);
10273 p -= 4 * ARRAY_SIZE (plt_resolve);
10275 bfd_put_32 (output_bfd,
10276 LIS_12 + PPC_HA (got + 4), p + 0*4);
10277 bfd_put_32 (output_bfd,
10278 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10279 bfd_put_32 (output_bfd,
10280 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10281 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10283 bfd_put_32 (output_bfd,
10284 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10285 bfd_put_32 (output_bfd,
10286 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10290 bfd_put_32 (output_bfd,
10291 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10292 bfd_put_32 (output_bfd,
10293 LWZ_12_12 + 4, p + 6*4);
10298 if (htab->glink_eh_frame != NULL
10299 && htab->glink_eh_frame->contents != NULL)
10301 unsigned char *p = htab->glink_eh_frame->contents;
10304 p += sizeof (glink_eh_frame_cie);
10309 /* Offset to .glink. */
10310 val = (htab->glink->output_section->vma
10311 + htab->glink->output_offset);
10312 val -= (htab->glink_eh_frame->output_section->vma
10313 + htab->glink_eh_frame->output_offset);
10314 val -= p - htab->glink_eh_frame->contents;
10315 bfd_put_32 (htab->elf.dynobj, val, p);
10317 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10318 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10319 htab->glink_eh_frame,
10320 htab->glink_eh_frame->contents))
10327 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10328 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10329 #define TARGET_BIG_SYM powerpc_elf32_vec
10330 #define TARGET_BIG_NAME "elf32-powerpc"
10331 #define ELF_ARCH bfd_arch_powerpc
10332 #define ELF_TARGET_ID PPC32_ELF_DATA
10333 #define ELF_MACHINE_CODE EM_PPC
10334 #ifdef __QNXTARGET__
10335 #define ELF_MAXPAGESIZE 0x1000
10336 #define ELF_COMMONPAGESIZE 0x1000
10338 #define ELF_MAXPAGESIZE 0x10000
10339 #define ELF_COMMONPAGESIZE 0x10000
10341 #define ELF_MINPAGESIZE 0x1000
10342 #define elf_info_to_howto ppc_elf_info_to_howto
10344 #ifdef EM_CYGNUS_POWERPC
10345 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10349 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10352 #define elf_backend_plt_not_loaded 1
10353 #define elf_backend_can_gc_sections 1
10354 #define elf_backend_can_refcount 1
10355 #define elf_backend_rela_normal 1
10356 #define elf_backend_caches_rawsize 1
10358 #define bfd_elf32_mkobject ppc_elf_mkobject
10359 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10360 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10361 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10362 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10363 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10364 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10365 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10367 #define elf_backend_object_p ppc_elf_object_p
10368 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10369 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10370 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10371 #define elf_backend_relocate_section ppc_elf_relocate_section
10372 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10373 #define elf_backend_check_relocs ppc_elf_check_relocs
10374 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10375 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10376 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10377 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10378 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10379 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10380 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10381 #define elf_backend_fake_sections ppc_elf_fake_sections
10382 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10383 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10384 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10385 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10386 #define elf_backend_write_core_note ppc_elf_write_core_note
10387 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10388 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10389 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10390 #define elf_backend_write_section ppc_elf_write_section
10391 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10392 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10393 #define elf_backend_action_discarded ppc_elf_action_discarded
10394 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10395 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10396 #define elf_backend_section_processing ppc_elf_section_processing
10398 #include "elf32-target.h"
10400 /* FreeBSD Target */
10402 #undef TARGET_LITTLE_SYM
10403 #undef TARGET_LITTLE_NAME
10405 #undef TARGET_BIG_SYM
10406 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10407 #undef TARGET_BIG_NAME
10408 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10411 #define ELF_OSABI ELFOSABI_FREEBSD
10414 #define elf32_bed elf32_powerpc_fbsd_bed
10416 #include "elf32-target.h"
10418 /* VxWorks Target */
10420 #undef TARGET_LITTLE_SYM
10421 #undef TARGET_LITTLE_NAME
10423 #undef TARGET_BIG_SYM
10424 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10425 #undef TARGET_BIG_NAME
10426 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10430 /* VxWorks uses the elf default section flags for .plt. */
10431 static const struct bfd_elf_special_section *
10432 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10434 if (sec->name == NULL)
10437 if (strcmp (sec->name, ".plt") == 0)
10438 return _bfd_elf_get_sec_type_attr (abfd, sec);
10440 return ppc_elf_get_sec_type_attr (abfd, sec);
10443 /* Like ppc_elf_link_hash_table_create, but overrides
10444 appropriately for VxWorks. */
10445 static struct bfd_link_hash_table *
10446 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10448 struct bfd_link_hash_table *ret;
10450 ret = ppc_elf_link_hash_table_create (abfd);
10453 struct ppc_elf_link_hash_table *htab
10454 = (struct ppc_elf_link_hash_table *)ret;
10455 htab->is_vxworks = 1;
10456 htab->plt_type = PLT_VXWORKS;
10457 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10458 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10459 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10464 /* Tweak magic VxWorks symbols as they are loaded. */
10466 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10467 struct bfd_link_info *info,
10468 Elf_Internal_Sym *sym,
10469 const char **namep ATTRIBUTE_UNUSED,
10470 flagword *flagsp ATTRIBUTE_UNUSED,
10474 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
10478 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
10482 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10484 ppc_elf_final_write_processing(abfd, linker);
10485 elf_vxworks_final_write_processing(abfd, linker);
10488 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10490 #undef elf_backend_want_plt_sym
10491 #define elf_backend_want_plt_sym 1
10492 #undef elf_backend_want_got_plt
10493 #define elf_backend_want_got_plt 1
10494 #undef elf_backend_got_symbol_offset
10495 #define elf_backend_got_symbol_offset 0
10496 #undef elf_backend_plt_not_loaded
10497 #define elf_backend_plt_not_loaded 0
10498 #undef elf_backend_plt_readonly
10499 #define elf_backend_plt_readonly 1
10500 #undef elf_backend_got_header_size
10501 #define elf_backend_got_header_size 12
10503 #undef bfd_elf32_get_synthetic_symtab
10505 #undef bfd_elf32_bfd_link_hash_table_create
10506 #define bfd_elf32_bfd_link_hash_table_create \
10507 ppc_elf_vxworks_link_hash_table_create
10508 #undef elf_backend_add_symbol_hook
10509 #define elf_backend_add_symbol_hook \
10510 ppc_elf_vxworks_add_symbol_hook
10511 #undef elf_backend_link_output_symbol_hook
10512 #define elf_backend_link_output_symbol_hook \
10513 elf_vxworks_link_output_symbol_hook
10514 #undef elf_backend_final_write_processing
10515 #define elf_backend_final_write_processing \
10516 ppc_elf_vxworks_final_write_processing
10517 #undef elf_backend_get_sec_type_attr
10518 #define elf_backend_get_sec_type_attr \
10519 ppc_elf_vxworks_get_sec_type_attr
10520 #undef elf_backend_emit_relocs
10521 #define elf_backend_emit_relocs \
10522 elf_vxworks_emit_relocs
10525 #define elf32_bed ppc_elf_vxworks_bed
10526 #undef elf_backend_post_process_headers
10528 #include "elf32-target.h"