1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2017 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
38 #include "opcode/ppc.h"
40 typedef enum split16_format_type
47 /* RELA relocations are used here. */
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
61 /* The name of the dynamic interpreter. This is put in the .interp
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE 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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 0xfffe, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1459 0x1f07ff, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1474 0x3e007ff, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1489 0x1f07ff, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1504 0x3e007ff, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1519 0x1f07ff, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1534 0x3e007ff, /* 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 ppc_elf_unhandled_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 ppc_elf_unhandled_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 ppc_elf_unhandled_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1581 0x1f07ff, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1596 0x3e007ff, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1611 0x1f07ff, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1626 0x3e007ff, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1641 0x1f07ff, /* 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 ppc_elf_unhandled_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1656 0x3e007ff, /* 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 ppc_elf_unhandled_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 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1735 HOWTO (R_PPC_REL16DX_HA, /* type */
1736 16, /* rightshift */
1737 2, /* size (0 = byte, 1 = short, 2 = long) */
1739 TRUE, /* pc_relative */
1741 complain_overflow_signed, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc, /* special_function */
1743 "R_PPC_REL16DX_HA", /* name */
1744 FALSE, /* partial_inplace */
1746 0x1fffc1, /* dst_mask */
1747 TRUE), /* pcrel_offset */
1749 /* GNU extension to record C++ vtable hierarchy. */
1750 HOWTO (R_PPC_GNU_VTINHERIT, /* 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_VTINHERIT", /* name */
1759 FALSE, /* partial_inplace */
1762 FALSE), /* pcrel_offset */
1764 /* GNU extension to record C++ vtable member usage. */
1765 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1767 0, /* size (0 = byte, 1 = short, 2 = long) */
1769 FALSE, /* pc_relative */
1771 complain_overflow_dont, /* complain_on_overflow */
1772 NULL, /* special_function */
1773 "R_PPC_GNU_VTENTRY", /* name */
1774 FALSE, /* partial_inplace */
1777 FALSE), /* pcrel_offset */
1779 /* Phony reloc to handle AIX style TOC entries. */
1780 HOWTO (R_PPC_TOC16, /* type */
1782 1, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE, /* pc_relative */
1786 complain_overflow_signed, /* complain_on_overflow */
1787 ppc_elf_unhandled_reloc, /* special_function */
1788 "R_PPC_TOC16", /* name */
1789 FALSE, /* partial_inplace */
1791 0xffff, /* dst_mask */
1792 FALSE), /* pcrel_offset */
1795 /* External 32-bit PPC structure for PRPSINFO. This structure is
1796 ABI-defined, thus we choose to use char arrays here in order to
1797 avoid dealing with different types in different architectures.
1799 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1800 most non-PPC architectures use `short int'.
1802 This structure will ultimately be written in the corefile's note
1803 section, as the PRPSINFO. */
1805 struct elf_external_ppc_linux_prpsinfo32
1807 char pr_state; /* Numeric process state. */
1808 char pr_sname; /* Char for pr_state. */
1809 char pr_zomb; /* Zombie. */
1810 char pr_nice; /* Nice val. */
1811 char pr_flag[4]; /* Flags. */
1818 char pr_fname[16]; /* Filename of executable. */
1819 char pr_psargs[80]; /* Initial part of arg list. */
1822 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1823 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1826 swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1827 const struct elf_internal_linux_prpsinfo *from,
1828 struct elf_external_ppc_linux_prpsinfo32 *to)
1830 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1831 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1832 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1833 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1834 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1835 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1836 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1837 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1838 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1839 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1840 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1841 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1842 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1845 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1848 ppc_elf_howto_init (void)
1850 unsigned int i, type;
1853 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1856 type = ppc_elf_howto_raw[i].type;
1857 if (type >= (sizeof (ppc_elf_howto_table)
1858 / sizeof (ppc_elf_howto_table[0])))
1860 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1864 static reloc_howto_type *
1865 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1866 bfd_reloc_code_real_type code)
1868 enum elf_ppc_reloc_type r;
1870 /* Initialize howto table if not already done. */
1871 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1872 ppc_elf_howto_init ();
1879 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1880 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1881 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1882 case BFD_RELOC_PPC64_ADDR16_DS:
1883 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1884 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1885 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1886 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1887 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1888 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1889 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1890 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1891 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1892 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1893 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1894 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1895 case BFD_RELOC_PPC64_GOT16_DS:
1896 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1897 case BFD_RELOC_PPC64_GOT16_LO_DS:
1898 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1899 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1900 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1901 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1902 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1903 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1904 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1905 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1906 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1907 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1908 case BFD_RELOC_PPC64_PLT16_LO_DS:
1909 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1910 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1911 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1912 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1913 case BFD_RELOC_PPC64_SECTOFF_DS:
1914 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1915 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1916 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1917 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1918 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1919 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1920 case BFD_RELOC_PPC64_TOC16_DS:
1921 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1922 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1923 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1924 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1925 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1926 case BFD_RELOC_PPC64_TPREL16_DS:
1927 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1928 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1929 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1930 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1931 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1932 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1933 case BFD_RELOC_PPC64_DTPREL16_DS:
1934 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1935 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1936 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1937 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1938 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1939 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1943 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1947 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1951 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1955 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1956 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1960 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1961 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1962 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1963 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1964 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1965 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1966 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1967 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1969 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1970 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1971 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1972 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1973 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1974 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1975 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1976 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1977 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1978 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1979 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1980 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1981 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1982 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1983 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1984 r = R_PPC_VLE_SDAREL_LO16A;
1986 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1987 r = R_PPC_VLE_SDAREL_LO16D;
1989 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1990 r = R_PPC_VLE_SDAREL_HI16A;
1992 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1993 r = R_PPC_VLE_SDAREL_HI16D;
1995 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1996 r = R_PPC_VLE_SDAREL_HA16A;
1998 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1999 r = R_PPC_VLE_SDAREL_HA16D;
2001 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2002 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2003 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2004 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2005 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2006 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2007 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2010 return ppc_elf_howto_table[r];
2013 static reloc_howto_type *
2014 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2020 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2022 if (ppc_elf_howto_raw[i].name != NULL
2023 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2024 return &ppc_elf_howto_raw[i];
2029 /* Set the howto pointer for a PowerPC ELF reloc. */
2032 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2034 Elf_Internal_Rela *dst)
2036 unsigned int r_type;
2038 /* Initialize howto table if not already done. */
2039 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2040 ppc_elf_howto_init ();
2042 r_type = ELF32_R_TYPE (dst->r_info);
2043 if (r_type >= R_PPC_max)
2045 /* xgettext:c-format */
2046 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2048 bfd_set_error (bfd_error_bad_value);
2049 r_type = R_PPC_NONE;
2051 cache_ptr->howto = ppc_elf_howto_table[r_type];
2053 /* Just because the above assert didn't trigger doesn't mean that
2054 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2055 if (!cache_ptr->howto)
2057 /* xgettext:c-format */
2058 _bfd_error_handler (_("%B: invalid relocation type %d"),
2060 bfd_set_error (bfd_error_bad_value);
2062 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2066 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2068 static bfd_reloc_status_type
2069 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2070 arelent *reloc_entry,
2072 void *data ATTRIBUTE_UNUSED,
2073 asection *input_section,
2075 char **error_message ATTRIBUTE_UNUSED)
2077 enum elf_ppc_reloc_type r_type;
2079 bfd_size_type octets;
2082 if (output_bfd != NULL)
2084 reloc_entry->address += input_section->output_offset;
2085 return bfd_reloc_ok;
2088 reloc_entry->addend += 0x8000;
2089 r_type = reloc_entry->howto->type;
2090 if (r_type != R_PPC_REL16DX_HA)
2091 return bfd_reloc_continue;
2094 if (!bfd_is_com_section (symbol->section))
2095 value = symbol->value;
2096 value += (reloc_entry->addend
2097 + symbol->section->output_offset
2098 + symbol->section->output_section->vma);
2099 value -= (reloc_entry->address
2100 + input_section->output_offset
2101 + input_section->output_section->vma);
2104 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2105 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2107 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2108 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2109 return bfd_reloc_ok;
2112 static bfd_reloc_status_type
2113 ppc_elf_unhandled_reloc (bfd *abfd,
2114 arelent *reloc_entry,
2117 asection *input_section,
2119 char **error_message)
2121 /* If this is a relocatable link (output_bfd test tells us), just
2122 call the generic function. Any adjustment will be done at final
2124 if (output_bfd != NULL)
2125 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2126 input_section, output_bfd, error_message);
2128 if (error_message != NULL)
2130 static char buf[60];
2131 sprintf (buf, _("generic linker can't handle %s"),
2132 reloc_entry->howto->name);
2133 *error_message = buf;
2135 return bfd_reloc_dangerous;
2138 /* Sections created by the linker. */
2140 typedef struct elf_linker_section
2142 /* Pointer to the bfd section. */
2146 /* Associated bss section name. */
2147 const char *bss_name;
2148 /* Associated symbol name. */
2149 const char *sym_name;
2150 /* Associated symbol. */
2151 struct elf_link_hash_entry *sym;
2152 } elf_linker_section_t;
2154 /* Linked list of allocated pointer entries. This hangs off of the
2155 symbol lists, and provides allows us to return different pointers,
2156 based on different addend's. */
2158 typedef struct elf_linker_section_pointers
2160 /* next allocated pointer for this symbol */
2161 struct elf_linker_section_pointers *next;
2162 /* offset of pointer from beginning of section */
2166 /* which linker section this is */
2167 elf_linker_section_t *lsect;
2168 } elf_linker_section_pointers_t;
2170 struct ppc_elf_obj_tdata
2172 struct elf_obj_tdata elf;
2174 /* A mapping from local symbols to offsets into the various linker
2175 sections added. This is index by the symbol index. */
2176 elf_linker_section_pointers_t **linker_section_pointers;
2178 /* Flags used to auto-detect plt type. */
2179 unsigned int makes_plt_call : 1;
2180 unsigned int has_rel16 : 1;
2183 #define ppc_elf_tdata(bfd) \
2184 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2186 #define elf_local_ptr_offsets(bfd) \
2187 (ppc_elf_tdata (bfd)->linker_section_pointers)
2189 #define is_ppc_elf(bfd) \
2190 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2191 && elf_object_id (bfd) == PPC32_ELF_DATA)
2193 /* Override the generic function because we store some extras. */
2196 ppc_elf_mkobject (bfd *abfd)
2198 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2202 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2205 _bfd_elf_ppc_set_arch (bfd *abfd)
2207 unsigned long mach = 0;
2209 unsigned char *contents;
2211 if (abfd->arch_info->bits_per_word == 32
2212 && bfd_big_endian (abfd))
2215 for (s = abfd->sections; s != NULL; s = s->next)
2216 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2219 mach = bfd_mach_ppc_vle;
2224 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2225 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2227 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2230 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2232 unsigned int val = bfd_get_32 (abfd, contents + i);
2235 case PPC_APUINFO_PMR:
2236 case PPC_APUINFO_RFMCI:
2238 mach = bfd_mach_ppc_titan;
2241 case PPC_APUINFO_ISEL:
2242 case PPC_APUINFO_CACHELCK:
2243 if (mach == bfd_mach_ppc_titan)
2244 mach = bfd_mach_ppc_e500mc;
2247 case PPC_APUINFO_SPE:
2248 case PPC_APUINFO_EFS:
2249 case PPC_APUINFO_BRLOCK:
2250 if (mach != bfd_mach_ppc_vle)
2251 mach = bfd_mach_ppc_e500;
2254 case PPC_APUINFO_VLE:
2255 mach = bfd_mach_ppc_vle;
2266 if (mach != 0 && mach != -1ul)
2268 const bfd_arch_info_type *arch;
2270 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2271 if (arch->mach == mach)
2273 abfd->arch_info = arch;
2280 /* Fix bad default arch selected for a 32 bit input bfd when the
2281 default is 64 bit. Also select arch based on apuinfo. */
2284 ppc_elf_object_p (bfd *abfd)
2286 if (!abfd->arch_info->the_default)
2289 if (abfd->arch_info->bits_per_word == 64)
2291 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2293 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2295 /* Relies on arch after 64 bit default being 32 bit default. */
2296 abfd->arch_info = abfd->arch_info->next;
2297 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2300 return _bfd_elf_ppc_set_arch (abfd);
2303 /* Function to set whether a module needs the -mrelocatable bit set. */
2306 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2308 BFD_ASSERT (!elf_flags_init (abfd)
2309 || elf_elfheader (abfd)->e_flags == flags);
2311 elf_elfheader (abfd)->e_flags = flags;
2312 elf_flags_init (abfd) = TRUE;
2316 /* Support for core dump NOTE sections. */
2319 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2324 switch (note->descsz)
2329 case 268: /* Linux/PPC. */
2331 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2334 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2343 /* Make a ".reg/999" section. */
2344 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2345 size, note->descpos + offset);
2349 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2351 switch (note->descsz)
2356 case 128: /* Linux/PPC elf_prpsinfo. */
2357 elf_tdata (abfd)->core->pid
2358 = bfd_get_32 (abfd, note->descdata + 16);
2359 elf_tdata (abfd)->core->program
2360 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2361 elf_tdata (abfd)->core->command
2362 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2365 /* Note that for some reason, a spurious space is tacked
2366 onto the end of the args in some (at least one anyway)
2367 implementations, so strip it off if it exists. */
2370 char *command = elf_tdata (abfd)->core->command;
2371 int n = strlen (command);
2373 if (0 < n && command[n - 1] == ' ')
2374 command[n - 1] = '\0';
2381 elfcore_write_ppc_linux_prpsinfo32
2385 const struct elf_internal_linux_prpsinfo *prpsinfo)
2387 struct elf_external_ppc_linux_prpsinfo32 data;
2389 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2390 return elfcore_write_note (abfd, buf, bufsiz,
2391 "CORE", NT_PRPSINFO, &data, sizeof (data));
2395 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2407 va_start (ap, note_type);
2408 memset (data, 0, sizeof (data));
2409 strncpy (data + 32, va_arg (ap, const char *), 16);
2410 strncpy (data + 48, va_arg (ap, const char *), 80);
2412 return elfcore_write_note (abfd, buf, bufsiz,
2413 "CORE", note_type, data, sizeof (data));
2424 va_start (ap, note_type);
2425 memset (data, 0, 72);
2426 pid = va_arg (ap, long);
2427 bfd_put_32 (abfd, pid, data + 24);
2428 cursig = va_arg (ap, int);
2429 bfd_put_16 (abfd, cursig, data + 12);
2430 greg = va_arg (ap, const void *);
2431 memcpy (data + 72, greg, 192);
2432 memset (data + 264, 0, 4);
2434 return elfcore_write_note (abfd, buf, bufsiz,
2435 "CORE", note_type, data, sizeof (data));
2441 ppc_elf_lookup_section_flags (char *flag_name)
2444 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2450 /* Return address for Ith PLT stub in section PLT, for relocation REL
2451 or (bfd_vma) -1 if it should not be included. */
2454 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2455 const asection *plt ATTRIBUTE_UNUSED,
2458 return rel->address;
2461 /* Handle a PowerPC specific section when reading an object file. This
2462 is called when bfd_section_from_shdr finds a section with an unknown
2466 ppc_elf_section_from_shdr (bfd *abfd,
2467 Elf_Internal_Shdr *hdr,
2474 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2477 newsect = hdr->bfd_section;
2478 flags = bfd_get_section_flags (abfd, newsect);
2479 if (hdr->sh_flags & SHF_EXCLUDE)
2480 flags |= SEC_EXCLUDE;
2482 if (hdr->sh_type == SHT_ORDERED)
2483 flags |= SEC_SORT_ENTRIES;
2485 bfd_set_section_flags (abfd, newsect, flags);
2489 /* Set up any other section flags and such that may be necessary. */
2492 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2493 Elf_Internal_Shdr *shdr,
2496 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2497 shdr->sh_type = SHT_ORDERED;
2502 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2503 need to bump up the number of section headers. */
2506 ppc_elf_additional_program_headers (bfd *abfd,
2507 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2512 s = bfd_get_section_by_name (abfd, ".sbss2");
2513 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2516 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2517 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2523 /* Modify the segment map for VLE executables. */
2526 ppc_elf_modify_segment_map (bfd *abfd,
2527 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2529 struct elf_segment_map *m;
2531 /* At this point in the link, output sections have already been sorted by
2532 LMA and assigned to segments. All that is left to do is to ensure
2533 there is no mixing of VLE & non-VLE sections in a text segment.
2534 If we find that case, we split the segment.
2535 We maintain the original output section order. */
2537 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2539 struct elf_segment_map *n;
2542 unsigned int p_flags;
2544 if (m->p_type != PT_LOAD || m->count == 0)
2547 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2549 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2551 if ((m->sections[j]->flags & SEC_CODE) != 0)
2554 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2555 p_flags |= PF_PPC_VLE;
2560 while (++j != m->count)
2562 unsigned int p_flags1 = PF_R;
2564 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2566 if ((m->sections[j]->flags & SEC_CODE) != 0)
2569 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2570 p_flags1 |= PF_PPC_VLE;
2571 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2574 p_flags |= p_flags1;
2576 /* If we're splitting a segment which originally contained rw
2577 sections then those sections might now only be in one of the
2578 two parts. So always set p_flags if splitting, even if we
2579 are being called for objcopy with p_flags_valid set. */
2580 if (j != m->count || !m->p_flags_valid)
2582 m->p_flags_valid = 1;
2583 m->p_flags = p_flags;
2588 /* Sections 0..j-1 stay in this (current) segment,
2589 the remainder are put in a new segment.
2590 The scan resumes with the new segment. */
2592 amt = sizeof (struct elf_segment_map);
2593 amt += (m->count - j - 1) * sizeof (asection *);
2594 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2598 n->p_type = PT_LOAD;
2599 n->count = m->count - j;
2600 for (k = 0; k < n->count; ++k)
2601 n->sections[k] = m->sections[j + k];
2603 m->p_size_valid = 0;
2611 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2612 .PPC.EMB.sbss0 a normal section, and not a bss section so
2613 that the linker doesn't crater when trying to make more than
2616 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2618 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2619 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2620 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2621 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2622 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2623 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2624 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2625 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2626 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2627 { NULL, 0, 0, 0, 0 }
2630 /* This is what we want for new plt/got. */
2631 static struct bfd_elf_special_section ppc_alt_plt =
2632 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2634 static const struct bfd_elf_special_section *
2635 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2637 const struct bfd_elf_special_section *ssect;
2639 /* See if this is one of the special sections. */
2640 if (sec->name == NULL)
2643 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2647 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2648 ssect = &ppc_alt_plt;
2652 return _bfd_elf_get_sec_type_attr (abfd, sec);
2655 /* Very simple linked list structure for recording apuinfo values. */
2656 typedef struct apuinfo_list
2658 struct apuinfo_list *next;
2659 unsigned long value;
2663 static apuinfo_list *head;
2664 static bfd_boolean apuinfo_set;
2667 apuinfo_list_init (void)
2670 apuinfo_set = FALSE;
2674 apuinfo_list_add (unsigned long value)
2676 apuinfo_list *entry = head;
2678 while (entry != NULL)
2680 if (entry->value == value)
2682 entry = entry->next;
2685 entry = bfd_malloc (sizeof (* entry));
2689 entry->value = value;
2695 apuinfo_list_length (void)
2697 apuinfo_list *entry;
2698 unsigned long count;
2700 for (entry = head, count = 0;
2702 entry = entry->next)
2708 static inline unsigned long
2709 apuinfo_list_element (unsigned long number)
2711 apuinfo_list * entry;
2715 entry = entry->next)
2718 return entry ? entry->value : 0;
2722 apuinfo_list_finish (void)
2724 apuinfo_list *entry;
2726 for (entry = head; entry;)
2728 apuinfo_list *next = entry->next;
2736 /* Scan the input BFDs and create a linked list of
2737 the APUinfo values that will need to be emitted. */
2740 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2744 char *buffer = NULL;
2745 bfd_size_type largest_input_size = 0;
2747 unsigned long length;
2748 const char *error_message = NULL;
2750 if (link_info == NULL)
2753 apuinfo_list_init ();
2755 /* Read in the input sections contents. */
2756 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2758 unsigned long datum;
2760 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2764 /* xgettext:c-format */
2765 error_message = _("corrupt %s section in %B");
2766 length = asec->size;
2771 if (largest_input_size < asec->size)
2775 largest_input_size = asec->size;
2776 buffer = bfd_malloc (largest_input_size);
2781 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2782 || (bfd_bread (buffer, length, ibfd) != length))
2784 /* xgettext:c-format */
2785 error_message = _("unable to read in %s section from %B");
2789 /* Verify the contents of the header. Note - we have to
2790 extract the values this way in order to allow for a
2791 host whose endian-ness is different from the target. */
2792 datum = bfd_get_32 (ibfd, buffer);
2793 if (datum != sizeof APUINFO_LABEL)
2796 datum = bfd_get_32 (ibfd, buffer + 8);
2800 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2803 /* Get the number of bytes used for apuinfo entries. */
2804 datum = bfd_get_32 (ibfd, buffer + 4);
2805 if (datum + 20 != length)
2808 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2809 for (i = 0; i < datum; i += 4)
2810 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2813 error_message = NULL;
2817 /* Compute the size of the output section. */
2818 unsigned num_entries = apuinfo_list_length ();
2820 /* Set the output section size, if it exists. */
2821 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2823 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2826 /* xgettext:c-format */
2827 error_message = _("warning: unable to set size of %s section in %B");
2836 _bfd_error_handler (error_message, ibfd, APUINFO_SECTION_NAME);
2839 /* Prevent the output section from accumulating the input sections'
2840 contents. We have already stored this in our linked list structure. */
2843 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2844 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2846 bfd_byte *contents ATTRIBUTE_UNUSED)
2848 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2851 /* Finally we can generate the output section. */
2854 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2859 unsigned num_entries;
2860 bfd_size_type length;
2862 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2869 length = asec->size;
2873 buffer = bfd_malloc (length);
2877 (_("failed to allocate space for new APUinfo section."));
2881 /* Create the apuinfo header. */
2882 num_entries = apuinfo_list_length ();
2883 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2884 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2885 bfd_put_32 (abfd, 0x2, buffer + 8);
2886 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2889 for (i = 0; i < num_entries; i++)
2891 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2895 if (length != asec->size)
2896 _bfd_error_handler (_("failed to compute new APUinfo section."));
2898 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2899 _bfd_error_handler (_("failed to install new APUinfo section."));
2903 apuinfo_list_finish ();
2907 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2909 bfd_byte buf[GLINK_ENTRY_SIZE];
2911 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2914 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2915 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2916 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2917 && bfd_get_32 (abfd, buf + 12) == BCTR);
2921 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2923 bfd_vma vma = *(bfd_vma *) ptr;
2924 return ((section->flags & SEC_ALLOC) != 0
2925 && section->vma <= vma
2926 && vma < section->vma + section->size);
2930 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2931 long dynsymcount, asymbol **dynsyms,
2934 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2935 asection *plt, *relplt, *dynamic, *glink;
2936 bfd_vma glink_vma = 0;
2937 bfd_vma resolv_vma = 0;
2948 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2951 if (dynsymcount <= 0)
2954 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2958 plt = bfd_get_section_by_name (abfd, ".plt");
2962 /* Call common code to handle old-style executable PLTs. */
2963 if (elf_section_flags (plt) & SHF_EXECINSTR)
2964 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2965 dynsymcount, dynsyms, ret);
2967 /* If this object was prelinked, the prelinker stored the address
2968 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2969 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2970 if (dynamic != NULL)
2972 bfd_byte *dynbuf, *extdyn, *extdynend;
2974 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2976 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2979 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2980 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2983 extdynend = extdyn + dynamic->size;
2984 for (; extdyn < extdynend; extdyn += extdynsize)
2986 Elf_Internal_Dyn dyn;
2987 (*swap_dyn_in) (abfd, extdyn, &dyn);
2989 if (dyn.d_tag == DT_NULL)
2992 if (dyn.d_tag == DT_PPC_GOT)
2994 unsigned int g_o_t = dyn.d_un.d_val;
2995 asection *got = bfd_get_section_by_name (abfd, ".got");
2997 && bfd_get_section_contents (abfd, got, buf,
2998 g_o_t - got->vma + 4, 4))
2999 glink_vma = bfd_get_32 (abfd, buf);
3006 /* Otherwise we read the first plt entry. */
3009 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3010 glink_vma = bfd_get_32 (abfd, buf);
3016 /* The .glink section usually does not survive the final
3017 link; search for the section (usually .text) where the
3018 glink stubs now reside. */
3019 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3023 /* Determine glink PLT resolver by reading the relative branch
3024 from the first glink stub. */
3025 if (bfd_get_section_contents (abfd, glink, buf,
3026 glink_vma - glink->vma, 4))
3028 unsigned int insn = bfd_get_32 (abfd, buf);
3030 /* The first glink stub may either branch to the resolver ... */
3032 if ((insn & ~0x3fffffc) == 0)
3033 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3035 /* ... or fall through a bunch of NOPs. */
3036 else if ((insn ^ B ^ NOP) == 0)
3038 bfd_get_section_contents (abfd, glink, buf,
3039 glink_vma - glink->vma + i, 4);
3041 if (bfd_get_32 (abfd, buf) != NOP)
3043 resolv_vma = glink_vma + i;
3048 count = relplt->size / sizeof (Elf32_External_Rela);
3049 /* If the stubs are those for -shared/-pie then we might have
3050 multiple stubs for each plt entry. If that is the case then
3051 there is no way to associate stubs with their plt entries short
3052 of figuring out the GOT pointer value used in the stub. */
3053 if (!is_nonpic_glink_stub (abfd, glink,
3054 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3057 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3058 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3061 size = count * sizeof (asymbol);
3062 p = relplt->relocation;
3063 for (i = 0; i < count; i++, p++)
3065 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3067 size += sizeof ("+0x") - 1 + 8;
3070 size += sizeof (asymbol) + sizeof ("__glink");
3073 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3075 s = *ret = bfd_malloc (size);
3079 stub_vma = glink_vma;
3080 names = (char *) (s + count + 1 + (resolv_vma != 0));
3081 p = relplt->relocation + count - 1;
3082 for (i = 0; i < count; i++)
3086 *s = **p->sym_ptr_ptr;
3087 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3088 we are defining a symbol, ensure one of them is set. */
3089 if ((s->flags & BSF_LOCAL) == 0)
3090 s->flags |= BSF_GLOBAL;
3091 s->flags |= BSF_SYNTHETIC;
3094 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3096 s->value = stub_vma - glink->vma;
3099 len = strlen ((*p->sym_ptr_ptr)->name);
3100 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3104 memcpy (names, "+0x", sizeof ("+0x") - 1);
3105 names += sizeof ("+0x") - 1;
3106 bfd_sprintf_vma (abfd, names, p->addend);
3107 names += strlen (names);
3109 memcpy (names, "@plt", sizeof ("@plt"));
3110 names += sizeof ("@plt");
3115 /* Add a symbol at the start of the glink branch table. */
3116 memset (s, 0, sizeof *s);
3118 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3120 s->value = glink_vma - glink->vma;
3122 memcpy (names, "__glink", sizeof ("__glink"));
3123 names += sizeof ("__glink");
3129 /* Add a symbol for the glink PLT resolver. */
3130 memset (s, 0, sizeof *s);
3132 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3134 s->value = resolv_vma - glink->vma;
3136 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3137 names += sizeof ("__glink_PLTresolve");
3145 /* The following functions are specific to the ELF linker, while
3146 functions above are used generally. They appear in this file more
3147 or less in the order in which they are called. eg.
3148 ppc_elf_check_relocs is called early in the link process,
3149 ppc_elf_finish_dynamic_sections is one of the last functions
3152 /* Track PLT entries needed for a given symbol. We might need more
3153 than one glink entry per symbol when generating a pic binary. */
3156 struct plt_entry *next;
3158 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3159 This field stores the offset into .got2 used to initialise the
3160 GOT pointer reg. It will always be at least 32768. (Current
3161 gcc always uses an offset of 32768, but ld -r will pack .got2
3162 sections together resulting in larger offsets). */
3165 /* The .got2 section. */
3168 /* PLT refcount or offset. */
3171 bfd_signed_vma refcount;
3175 /* .glink stub offset. */
3176 bfd_vma glink_offset;
3179 /* Of those relocs that might be copied as dynamic relocs, this function
3180 selects those that must be copied when linking a shared library,
3181 even when the symbol is local. */
3184 must_be_dyn_reloc (struct bfd_link_info *info,
3185 enum elf_ppc_reloc_type r_type)
3194 case R_PPC_REL14_BRTAKEN:
3195 case R_PPC_REL14_BRNTAKEN:
3201 case R_PPC_TPREL16_LO:
3202 case R_PPC_TPREL16_HI:
3203 case R_PPC_TPREL16_HA:
3204 return !bfd_link_executable (info);
3208 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3209 copying dynamic variables from a shared lib into an app's dynbss
3210 section, and instead use a dynamic relocation to point into the
3212 #define ELIMINATE_COPY_RELOCS 1
3214 /* Used to track dynamic relocations for local symbols. */
3215 struct ppc_dyn_relocs
3217 struct ppc_dyn_relocs *next;
3219 /* The input section of the reloc. */
3222 /* Total number of relocs copied for the input section. */
3223 unsigned int count : 31;
3225 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3226 unsigned int ifunc : 1;
3229 /* PPC ELF linker hash entry. */
3231 struct ppc_elf_link_hash_entry
3233 struct elf_link_hash_entry elf;
3235 /* If this symbol is used in the linker created sections, the processor
3236 specific backend uses this field to map the field into the offset
3237 from the beginning of the section. */
3238 elf_linker_section_pointers_t *linker_section_pointer;
3240 /* Track dynamic relocs copied for this symbol. */
3241 struct elf_dyn_relocs *dyn_relocs;
3243 /* Contexts in which symbol is used in the GOT (or TOC).
3244 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3245 corresponding relocs are encountered during check_relocs.
3246 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3247 indicate the corresponding GOT entry type is not needed. */
3248 #define TLS_GD 1 /* GD reloc. */
3249 #define TLS_LD 2 /* LD reloc. */
3250 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3251 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3252 #define TLS_TLS 16 /* Any TLS reloc. */
3253 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3254 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3257 /* Nonzero if we have seen a small data relocation referring to this
3259 unsigned char has_sda_refs : 1;
3261 /* Flag use of given relocations. */
3262 unsigned char has_addr16_ha : 1;
3263 unsigned char has_addr16_lo : 1;
3266 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3268 /* PPC ELF linker hash table. */
3270 struct ppc_elf_link_hash_table
3272 struct elf_link_hash_table elf;
3274 /* Various options passed from the linker. */
3275 struct ppc_elf_params *params;
3277 /* Short-cuts to get to dynamic linker sections. */
3281 elf_linker_section_t sdata[2];
3283 asection *glink_eh_frame;
3285 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3288 /* Shortcut to __tls_get_addr. */
3289 struct elf_link_hash_entry *tls_get_addr;
3291 /* The bfd that forced an old-style PLT. */
3294 /* TLS local dynamic got entry handling. */
3296 bfd_signed_vma refcount;
3300 /* Offset of branch table to PltResolve function in glink. */
3301 bfd_vma glink_pltresolve;
3303 /* Size of reserved GOT entries. */
3304 unsigned int got_header_size;
3305 /* Non-zero if allocating the header left a gap. */
3306 unsigned int got_gap;
3308 /* The type of PLT we have chosen to use. */
3309 enum ppc_elf_plt_type plt_type;
3311 /* True if the target system is VxWorks. */
3312 unsigned int is_vxworks:1;
3314 /* The size of PLT entries. */
3316 /* The distance between adjacent PLT slots. */
3318 /* The size of the first PLT entry. */
3319 int plt_initial_entry_size;
3321 /* Small local sym cache. */
3322 struct sym_cache sym_cache;
3325 /* Rename some of the generic section flags to better document how they
3326 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3328 /* Nonzero if this section has TLS related relocations. */
3329 #define has_tls_reloc sec_flg0
3331 /* Nonzero if this section has a call to __tls_get_addr. */
3332 #define has_tls_get_addr_call sec_flg1
3334 /* Get the PPC ELF linker hash table from a link_info structure. */
3336 #define ppc_elf_hash_table(p) \
3337 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3338 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3340 /* Create an entry in a PPC ELF linker hash table. */
3342 static struct bfd_hash_entry *
3343 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3344 struct bfd_hash_table *table,
3347 /* Allocate the structure if it has not already been allocated by a
3351 entry = bfd_hash_allocate (table,
3352 sizeof (struct ppc_elf_link_hash_entry));
3357 /* Call the allocation method of the superclass. */
3358 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3361 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3362 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3363 ppc_elf_hash_entry (entry)->tls_mask = 0;
3364 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3370 /* Create a PPC ELF linker hash table. */
3372 static struct bfd_link_hash_table *
3373 ppc_elf_link_hash_table_create (bfd *abfd)
3375 struct ppc_elf_link_hash_table *ret;
3376 static struct ppc_elf_params default_params
3377 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3379 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3383 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3384 ppc_elf_link_hash_newfunc,
3385 sizeof (struct ppc_elf_link_hash_entry),
3392 ret->elf.init_plt_refcount.refcount = 0;
3393 ret->elf.init_plt_refcount.glist = NULL;
3394 ret->elf.init_plt_offset.offset = 0;
3395 ret->elf.init_plt_offset.glist = NULL;
3397 ret->params = &default_params;
3399 ret->sdata[0].name = ".sdata";
3400 ret->sdata[0].sym_name = "_SDA_BASE_";
3401 ret->sdata[0].bss_name = ".sbss";
3403 ret->sdata[1].name = ".sdata2";
3404 ret->sdata[1].sym_name = "_SDA2_BASE_";
3405 ret->sdata[1].bss_name = ".sbss2";
3407 ret->plt_entry_size = 12;
3408 ret->plt_slot_size = 8;
3409 ret->plt_initial_entry_size = 72;
3411 return &ret->elf.root;
3414 /* Hook linker params into hash table. */
3417 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3419 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3422 htab->params = params;
3423 params->pagesize_p2 = bfd_log2 (params->pagesize);
3426 /* Create .got and the related sections. */
3429 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3431 struct ppc_elf_link_hash_table *htab;
3433 if (!_bfd_elf_create_got_section (abfd, info))
3436 htab = ppc_elf_hash_table (info);
3437 if (!htab->is_vxworks)
3439 /* The powerpc .got has a blrl instruction in it. Mark it
3441 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3442 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3443 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3450 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3451 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3452 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3455 ppc_elf_create_linker_section (bfd *abfd,
3456 struct bfd_link_info *info,
3458 elf_linker_section_t *lsect)
3462 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3463 | SEC_LINKER_CREATED);
3465 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3470 /* Define the sym on the first section of this name. */
3471 s = bfd_get_section_by_name (abfd, lsect->name);
3473 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3474 if (lsect->sym == NULL)
3476 lsect->sym->root.u.def.value = 0x8000;
3481 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3483 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3487 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3488 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3489 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3492 || !bfd_set_section_alignment (abfd, s,
3493 htab->params->ppc476_workaround ? 6 : 4))
3496 if (!info->no_ld_generated_unwind_info)
3498 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3499 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3500 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3501 htab->glink_eh_frame = s;
3503 || !bfd_set_section_alignment (abfd, s, 2))
3507 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3508 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3511 || !bfd_set_section_alignment (abfd, s, 4))
3514 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3515 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3516 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3517 htab->elf.irelplt = s;
3519 || ! bfd_set_section_alignment (abfd, s, 2))
3522 if (!ppc_elf_create_linker_section (abfd, info, 0,
3526 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3533 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3534 to output sections (just like _bfd_elf_create_dynamic_sections has
3535 to create .dynbss and .rela.bss). */
3538 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3540 struct ppc_elf_link_hash_table *htab;
3544 htab = ppc_elf_hash_table (info);
3546 if (htab->elf.sgot == NULL
3547 && !ppc_elf_create_got (abfd, info))
3550 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3553 if (htab->glink == NULL
3554 && !ppc_elf_create_glink (abfd, info))
3557 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3558 SEC_ALLOC | SEC_LINKER_CREATED);
3563 if (! bfd_link_pic (info))
3565 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3566 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3567 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3570 || ! bfd_set_section_alignment (abfd, s, 2))
3574 if (htab->is_vxworks
3575 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3579 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3580 if (htab->plt_type == PLT_VXWORKS)
3581 /* The VxWorks PLT is a loaded section with contents. */
3582 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3583 return bfd_set_section_flags (abfd, s, flags);
3586 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3589 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3590 struct elf_link_hash_entry *dir,
3591 struct elf_link_hash_entry *ind)
3593 struct ppc_elf_link_hash_entry *edir, *eind;
3595 edir = (struct ppc_elf_link_hash_entry *) dir;
3596 eind = (struct ppc_elf_link_hash_entry *) ind;
3598 edir->tls_mask |= eind->tls_mask;
3599 edir->has_sda_refs |= eind->has_sda_refs;
3601 /* If called to transfer flags for a weakdef during processing
3602 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3603 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3604 if (!(ELIMINATE_COPY_RELOCS
3605 && eind->elf.root.type != bfd_link_hash_indirect
3606 && edir->elf.dynamic_adjusted))
3607 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3609 if (edir->elf.versioned != versioned_hidden)
3610 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3611 edir->elf.ref_regular |= eind->elf.ref_regular;
3612 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3613 edir->elf.needs_plt |= eind->elf.needs_plt;
3614 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3616 if (eind->dyn_relocs != NULL)
3618 if (edir->dyn_relocs != NULL)
3620 struct elf_dyn_relocs **pp;
3621 struct elf_dyn_relocs *p;
3623 /* Add reloc counts against the indirect sym to the direct sym
3624 list. Merge any entries against the same section. */
3625 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3627 struct elf_dyn_relocs *q;
3629 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3630 if (q->sec == p->sec)
3632 q->pc_count += p->pc_count;
3633 q->count += p->count;
3640 *pp = edir->dyn_relocs;
3643 edir->dyn_relocs = eind->dyn_relocs;
3644 eind->dyn_relocs = NULL;
3647 /* If we were called to copy over info for a weak sym, that's all.
3648 You might think dyn_relocs need not be copied over; After all,
3649 both syms will be dynamic or both non-dynamic so we're just
3650 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3651 code in ppc_elf_adjust_dynamic_symbol needs to check for
3652 dyn_relocs in read-only sections, and it does so on what is the
3654 if (eind->elf.root.type != bfd_link_hash_indirect)
3657 /* Copy over the GOT refcount entries that we may have already seen to
3658 the symbol which just became indirect. */
3659 edir->elf.got.refcount += eind->elf.got.refcount;
3660 eind->elf.got.refcount = 0;
3662 /* And plt entries. */
3663 if (eind->elf.plt.plist != NULL)
3665 if (edir->elf.plt.plist != NULL)
3667 struct plt_entry **entp;
3668 struct plt_entry *ent;
3670 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3672 struct plt_entry *dent;
3674 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3675 if (dent->sec == ent->sec && dent->addend == ent->addend)
3677 dent->plt.refcount += ent->plt.refcount;
3684 *entp = edir->elf.plt.plist;
3687 edir->elf.plt.plist = eind->elf.plt.plist;
3688 eind->elf.plt.plist = NULL;
3691 if (eind->elf.dynindx != -1)
3693 if (edir->elf.dynindx != -1)
3694 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3695 edir->elf.dynstr_index);
3696 edir->elf.dynindx = eind->elf.dynindx;
3697 edir->elf.dynstr_index = eind->elf.dynstr_index;
3698 eind->elf.dynindx = -1;
3699 eind->elf.dynstr_index = 0;
3703 /* Hook called by the linker routine which adds symbols from an object
3704 file. We use it to put .comm items in .sbss, and not .bss. */
3707 ppc_elf_add_symbol_hook (bfd *abfd,
3708 struct bfd_link_info *info,
3709 Elf_Internal_Sym *sym,
3710 const char **namep ATTRIBUTE_UNUSED,
3711 flagword *flagsp ATTRIBUTE_UNUSED,
3715 if (sym->st_shndx == SHN_COMMON
3716 && !bfd_link_relocatable (info)
3717 && is_ppc_elf (info->output_bfd)
3718 && sym->st_size <= elf_gp_size (abfd))
3720 /* Common symbols less than or equal to -G nn bytes are automatically
3722 struct ppc_elf_link_hash_table *htab;
3724 htab = ppc_elf_hash_table (info);
3725 if (htab->sbss == NULL)
3727 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3729 if (!htab->elf.dynobj)
3730 htab->elf.dynobj = abfd;
3732 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3735 if (htab->sbss == NULL)
3740 *valp = sym->st_size;
3743 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3744 && (abfd->flags & DYNAMIC) == 0
3745 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3746 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3751 /* Find a linker generated pointer with a given addend and type. */
3753 static elf_linker_section_pointers_t *
3754 elf_find_pointer_linker_section
3755 (elf_linker_section_pointers_t *linker_pointers,
3757 elf_linker_section_t *lsect)
3759 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3760 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3761 return linker_pointers;
3766 /* Allocate a pointer to live in a linker created section. */
3769 elf_allocate_pointer_linker_section (bfd *abfd,
3770 elf_linker_section_t *lsect,
3771 struct elf_link_hash_entry *h,
3772 const Elf_Internal_Rela *rel)
3774 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3775 elf_linker_section_pointers_t *linker_section_ptr;
3776 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3779 BFD_ASSERT (lsect != NULL);
3781 /* Is this a global symbol? */
3784 struct ppc_elf_link_hash_entry *eh;
3786 /* Has this symbol already been allocated? If so, our work is done. */
3787 eh = (struct ppc_elf_link_hash_entry *) h;
3788 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3793 ptr_linker_section_ptr = &eh->linker_section_pointer;
3797 BFD_ASSERT (is_ppc_elf (abfd));
3799 /* Allocation of a pointer to a local symbol. */
3800 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3802 /* Allocate a table to hold the local symbols if first time. */
3805 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3808 amt *= sizeof (elf_linker_section_pointers_t *);
3809 ptr = bfd_zalloc (abfd, amt);
3814 elf_local_ptr_offsets (abfd) = ptr;
3817 /* Has this symbol already been allocated? If so, our work is done. */
3818 if (elf_find_pointer_linker_section (ptr[r_symndx],
3823 ptr_linker_section_ptr = &ptr[r_symndx];
3826 /* Allocate space for a pointer in the linker section, and allocate
3827 a new pointer record from internal memory. */
3828 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3829 amt = sizeof (elf_linker_section_pointers_t);
3830 linker_section_ptr = bfd_alloc (abfd, amt);
3832 if (!linker_section_ptr)
3835 linker_section_ptr->next = *ptr_linker_section_ptr;
3836 linker_section_ptr->addend = rel->r_addend;
3837 linker_section_ptr->lsect = lsect;
3838 *ptr_linker_section_ptr = linker_section_ptr;
3840 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3842 linker_section_ptr->offset = lsect->section->size;
3843 lsect->section->size += 4;
3847 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3848 lsect->name, (long) linker_section_ptr->offset,
3849 (long) lsect->section->size);
3855 static struct plt_entry **
3856 update_local_sym_info (bfd *abfd,
3857 Elf_Internal_Shdr *symtab_hdr,
3858 unsigned long r_symndx,
3861 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3862 struct plt_entry **local_plt;
3863 char *local_got_tls_masks;
3865 if (local_got_refcounts == NULL)
3867 bfd_size_type size = symtab_hdr->sh_info;
3869 size *= (sizeof (*local_got_refcounts)
3870 + sizeof (*local_plt)
3871 + sizeof (*local_got_tls_masks));
3872 local_got_refcounts = bfd_zalloc (abfd, size);
3873 if (local_got_refcounts == NULL)
3875 elf_local_got_refcounts (abfd) = local_got_refcounts;
3878 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3879 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3880 local_got_tls_masks[r_symndx] |= tls_type;
3881 if (tls_type != PLT_IFUNC)
3882 local_got_refcounts[r_symndx] += 1;
3883 return local_plt + r_symndx;
3887 update_plt_info (bfd *abfd, struct plt_entry **plist,
3888 asection *sec, bfd_vma addend)
3890 struct plt_entry *ent;
3894 for (ent = *plist; ent != NULL; ent = ent->next)
3895 if (ent->sec == sec && ent->addend == addend)
3899 bfd_size_type amt = sizeof (*ent);
3900 ent = bfd_alloc (abfd, amt);
3905 ent->addend = addend;
3906 ent->plt.refcount = 0;
3909 ent->plt.refcount += 1;
3913 static struct plt_entry *
3914 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3916 struct plt_entry *ent;
3920 for (ent = *plist; ent != NULL; ent = ent->next)
3921 if (ent->sec == sec && ent->addend == addend)
3927 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3929 return (r_type == R_PPC_PLTREL24
3930 || r_type == R_PPC_LOCAL24PC
3931 || r_type == R_PPC_REL24
3932 || r_type == R_PPC_REL14
3933 || r_type == R_PPC_REL14_BRTAKEN
3934 || r_type == R_PPC_REL14_BRNTAKEN
3935 || r_type == R_PPC_ADDR24
3936 || r_type == R_PPC_ADDR14
3937 || r_type == R_PPC_ADDR14_BRTAKEN
3938 || r_type == R_PPC_ADDR14_BRNTAKEN
3939 || r_type == R_PPC_VLE_REL24);
3943 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3946 /* xgettext:c-format */
3947 (_("%B: relocation %s cannot be used when making a shared object"),
3949 ppc_elf_howto_table[r_type]->name);
3950 bfd_set_error (bfd_error_bad_value);
3953 /* Look through the relocs for a section during the first phase, and
3954 allocate space in the global offset table or procedure linkage
3958 ppc_elf_check_relocs (bfd *abfd,
3959 struct bfd_link_info *info,
3961 const Elf_Internal_Rela *relocs)
3963 struct ppc_elf_link_hash_table *htab;
3964 Elf_Internal_Shdr *symtab_hdr;
3965 struct elf_link_hash_entry **sym_hashes;
3966 const Elf_Internal_Rela *rel;
3967 const Elf_Internal_Rela *rel_end;
3968 asection *got2, *sreloc;
3969 struct elf_link_hash_entry *tga;
3971 if (bfd_link_relocatable (info))
3974 /* Don't do anything special with non-loaded, non-alloced sections.
3975 In particular, any relocs in such sections should not affect GOT
3976 and PLT reference counting (ie. we don't allow them to create GOT
3977 or PLT entries), there's no possibility or desire to optimize TLS
3978 relocs, and there's not much point in propagating relocs to shared
3979 libs that the dynamic linker won't relocate. */
3980 if ((sec->flags & SEC_ALLOC) == 0)
3984 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3988 BFD_ASSERT (is_ppc_elf (abfd));
3990 /* Initialize howto table if not already done. */
3991 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3992 ppc_elf_howto_init ();
3994 htab = ppc_elf_hash_table (info);
3995 if (htab->glink == NULL)
3997 if (htab->elf.dynobj == NULL)
3998 htab->elf.dynobj = abfd;
3999 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4002 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4003 FALSE, FALSE, TRUE);
4004 symtab_hdr = &elf_symtab_hdr (abfd);
4005 sym_hashes = elf_sym_hashes (abfd);
4006 got2 = bfd_get_section_by_name (abfd, ".got2");
4009 rel_end = relocs + sec->reloc_count;
4010 for (rel = relocs; rel < rel_end; rel++)
4012 unsigned long r_symndx;
4013 enum elf_ppc_reloc_type r_type;
4014 struct elf_link_hash_entry *h;
4016 struct plt_entry **ifunc;
4018 r_symndx = ELF32_R_SYM (rel->r_info);
4019 if (r_symndx < symtab_hdr->sh_info)
4023 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4024 while (h->root.type == bfd_link_hash_indirect
4025 || h->root.type == bfd_link_hash_warning)
4026 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4028 /* PR15323, ref flags aren't set for references in the same
4030 h->root.non_ir_ref = 1;
4033 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4034 This shows up in particular in an R_PPC_ADDR32 in the eabi
4037 && htab->elf.sgot == NULL
4038 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4040 if (htab->elf.dynobj == NULL)
4041 htab->elf.dynobj = abfd;
4042 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4044 BFD_ASSERT (h == htab->elf.hgot);
4048 r_type = ELF32_R_TYPE (rel->r_info);
4050 if (h == NULL && !htab->is_vxworks)
4052 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4057 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4059 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4060 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4065 /* STT_GNU_IFUNC symbols must have a PLT entry;
4066 In a non-pie executable even when there are
4068 if (!bfd_link_pic (info)
4069 || is_branch_reloc (r_type))
4072 if (r_type == R_PPC_PLTREL24)
4074 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4075 if (bfd_link_pic (info))
4076 addend = rel->r_addend;
4078 if (!update_plt_info (abfd, ifunc, got2, addend))
4084 if (!htab->is_vxworks
4085 && is_branch_reloc (r_type)
4090 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4091 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4092 /* We have a new-style __tls_get_addr call with a marker
4096 /* Mark this section as having an old-style call. */
4097 sec->has_tls_get_addr_call = 1;
4104 /* These special tls relocs tie a call to __tls_get_addr with
4105 its parameter symbol. */
4108 case R_PPC_GOT_TLSLD16:
4109 case R_PPC_GOT_TLSLD16_LO:
4110 case R_PPC_GOT_TLSLD16_HI:
4111 case R_PPC_GOT_TLSLD16_HA:
4112 tls_type = TLS_TLS | TLS_LD;
4115 case R_PPC_GOT_TLSGD16:
4116 case R_PPC_GOT_TLSGD16_LO:
4117 case R_PPC_GOT_TLSGD16_HI:
4118 case R_PPC_GOT_TLSGD16_HA:
4119 tls_type = TLS_TLS | TLS_GD;
4122 case R_PPC_GOT_TPREL16:
4123 case R_PPC_GOT_TPREL16_LO:
4124 case R_PPC_GOT_TPREL16_HI:
4125 case R_PPC_GOT_TPREL16_HA:
4126 if (bfd_link_pic (info))
4127 info->flags |= DF_STATIC_TLS;
4128 tls_type = TLS_TLS | TLS_TPREL;
4131 case R_PPC_GOT_DTPREL16:
4132 case R_PPC_GOT_DTPREL16_LO:
4133 case R_PPC_GOT_DTPREL16_HI:
4134 case R_PPC_GOT_DTPREL16_HA:
4135 tls_type = TLS_TLS | TLS_DTPREL;
4137 sec->has_tls_reloc = 1;
4140 /* GOT16 relocations */
4142 case R_PPC_GOT16_LO:
4143 case R_PPC_GOT16_HI:
4144 case R_PPC_GOT16_HA:
4145 /* This symbol requires a global offset table entry. */
4146 if (htab->elf.sgot == NULL)
4148 if (htab->elf.dynobj == NULL)
4149 htab->elf.dynobj = abfd;
4150 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4155 h->got.refcount += 1;
4156 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4159 /* This is a global offset table entry for a local symbol. */
4160 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4163 /* We may also need a plt entry if the symbol turns out to be
4165 if (h != NULL && !bfd_link_pic (info))
4167 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4172 /* Indirect .sdata relocation. */
4173 case R_PPC_EMB_SDAI16:
4174 if (bfd_link_pic (info))
4176 bad_shared_reloc (abfd, r_type);
4179 htab->sdata[0].sym->ref_regular = 1;
4180 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4185 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4186 h->non_got_ref = TRUE;
4190 /* Indirect .sdata2 relocation. */
4191 case R_PPC_EMB_SDA2I16:
4192 if (bfd_link_pic (info))
4194 bad_shared_reloc (abfd, r_type);
4197 htab->sdata[1].sym->ref_regular = 1;
4198 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4203 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4204 h->non_got_ref = TRUE;
4208 case R_PPC_SDAREL16:
4209 htab->sdata[0].sym->ref_regular = 1;
4212 case R_PPC_VLE_SDAREL_LO16A:
4213 case R_PPC_VLE_SDAREL_LO16D:
4214 case R_PPC_VLE_SDAREL_HI16A:
4215 case R_PPC_VLE_SDAREL_HI16D:
4216 case R_PPC_VLE_SDAREL_HA16A:
4217 case R_PPC_VLE_SDAREL_HA16D:
4220 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4221 h->non_got_ref = TRUE;
4225 case R_PPC_VLE_REL8:
4226 case R_PPC_VLE_REL15:
4227 case R_PPC_VLE_REL24:
4228 case R_PPC_VLE_LO16A:
4229 case R_PPC_VLE_LO16D:
4230 case R_PPC_VLE_HI16A:
4231 case R_PPC_VLE_HI16D:
4232 case R_PPC_VLE_HA16A:
4233 case R_PPC_VLE_HA16D:
4236 case R_PPC_EMB_SDA2REL:
4237 if (bfd_link_pic (info))
4239 bad_shared_reloc (abfd, r_type);
4242 htab->sdata[1].sym->ref_regular = 1;
4245 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4246 h->non_got_ref = TRUE;
4250 case R_PPC_VLE_SDA21_LO:
4251 case R_PPC_VLE_SDA21:
4252 case R_PPC_EMB_SDA21:
4253 case R_PPC_EMB_RELSDA:
4254 if (bfd_link_pic (info))
4256 bad_shared_reloc (abfd, r_type);
4261 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4262 h->non_got_ref = TRUE;
4266 case R_PPC_EMB_NADDR32:
4267 case R_PPC_EMB_NADDR16:
4268 case R_PPC_EMB_NADDR16_LO:
4269 case R_PPC_EMB_NADDR16_HI:
4270 case R_PPC_EMB_NADDR16_HA:
4271 if (bfd_link_pic (info))
4273 bad_shared_reloc (abfd, r_type);
4277 h->non_got_ref = TRUE;
4280 case R_PPC_PLTREL24:
4285 case R_PPC_PLTREL32:
4286 case R_PPC_PLT16_LO:
4287 case R_PPC_PLT16_HI:
4288 case R_PPC_PLT16_HA:
4290 fprintf (stderr, "Reloc requires a PLT entry\n");
4292 /* This symbol requires a procedure linkage table entry. */
4297 /* It does not make sense to have a procedure linkage
4298 table entry for a non-ifunc local symbol. */
4299 info->callbacks->einfo
4300 /* xgettext:c-format */
4301 (_("%H: %s reloc against local symbol\n"),
4302 abfd, sec, rel->r_offset,
4303 ppc_elf_howto_table[r_type]->name);
4304 bfd_set_error (bfd_error_bad_value);
4312 if (r_type == R_PPC_PLTREL24)
4314 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4315 if (bfd_link_pic (info))
4316 addend = rel->r_addend;
4319 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4324 /* The following relocations don't need to propagate the
4325 relocation if linking a shared object since they are
4326 section relative. */
4328 case R_PPC_SECTOFF_LO:
4329 case R_PPC_SECTOFF_HI:
4330 case R_PPC_SECTOFF_HA:
4331 case R_PPC_DTPREL16:
4332 case R_PPC_DTPREL16_LO:
4333 case R_PPC_DTPREL16_HI:
4334 case R_PPC_DTPREL16_HA:
4339 case R_PPC_REL16_LO:
4340 case R_PPC_REL16_HI:
4341 case R_PPC_REL16_HA:
4342 case R_PPC_REL16DX_HA:
4343 ppc_elf_tdata (abfd)->has_rel16 = 1;
4346 /* These are just markers. */
4348 case R_PPC_EMB_MRKREF:
4352 case R_PPC_RELAX_PLT:
4353 case R_PPC_RELAX_PLTREL24:
4356 /* These should only appear in dynamic objects. */
4358 case R_PPC_GLOB_DAT:
4359 case R_PPC_JMP_SLOT:
4360 case R_PPC_RELATIVE:
4361 case R_PPC_IRELATIVE:
4364 /* These aren't handled yet. We'll report an error later. */
4366 case R_PPC_EMB_RELSEC16:
4367 case R_PPC_EMB_RELST_LO:
4368 case R_PPC_EMB_RELST_HI:
4369 case R_PPC_EMB_RELST_HA:
4370 case R_PPC_EMB_BIT_FLD:
4373 /* This refers only to functions defined in the shared library. */
4374 case R_PPC_LOCAL24PC:
4375 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4377 htab->plt_type = PLT_OLD;
4378 htab->old_bfd = abfd;
4380 if (h != NULL && h->type == STT_GNU_IFUNC)
4383 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4388 /* This relocation describes the C++ object vtable hierarchy.
4389 Reconstruct it for later use during GC. */
4390 case R_PPC_GNU_VTINHERIT:
4391 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4395 /* This relocation describes which C++ vtable entries are actually
4396 used. Record for later use during GC. */
4397 case R_PPC_GNU_VTENTRY:
4398 BFD_ASSERT (h != NULL);
4400 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4404 /* We shouldn't really be seeing these. */
4407 case R_PPC_TPREL16_LO:
4408 case R_PPC_TPREL16_HI:
4409 case R_PPC_TPREL16_HA:
4410 if (bfd_link_pic (info))
4411 info->flags |= DF_STATIC_TLS;
4415 case R_PPC_DTPMOD32:
4416 case R_PPC_DTPREL32:
4422 && (sec->flags & SEC_CODE) != 0
4423 && bfd_link_pic (info)
4424 && htab->plt_type == PLT_UNSET)
4426 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4427 the start of a function, which assembles to a REL32
4428 reference to .got2. If we detect one of these, then
4429 force the old PLT layout because the linker cannot
4430 reliably deduce the GOT pointer value needed for
4433 Elf_Internal_Sym *isym;
4435 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4440 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4443 htab->plt_type = PLT_OLD;
4444 htab->old_bfd = abfd;
4447 if (h == NULL || h == htab->elf.hgot)
4453 case R_PPC_ADDR16_LO:
4454 case R_PPC_ADDR16_HI:
4455 case R_PPC_ADDR16_HA:
4458 if (h != NULL && !bfd_link_pic (info))
4460 /* We may need a plt entry if the symbol turns out to be
4461 a function defined in a dynamic object. */
4462 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4465 /* We may need a copy reloc too. */
4467 h->pointer_equality_needed = 1;
4468 if (r_type == R_PPC_ADDR16_HA)
4469 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4470 if (r_type == R_PPC_ADDR16_LO)
4471 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4477 case R_PPC_REL14_BRTAKEN:
4478 case R_PPC_REL14_BRNTAKEN:
4481 if (h == htab->elf.hgot)
4483 if (htab->plt_type == PLT_UNSET)
4485 htab->plt_type = PLT_OLD;
4486 htab->old_bfd = abfd;
4494 case R_PPC_ADDR14_BRTAKEN:
4495 case R_PPC_ADDR14_BRNTAKEN:
4496 if (h != NULL && !bfd_link_pic (info))
4498 /* We may need a plt entry if the symbol turns out to be
4499 a function defined in a dynamic object. */
4501 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4507 /* If we are creating a shared library, and this is a reloc
4508 against a global symbol, or a non PC relative reloc
4509 against a local symbol, then we need to copy the reloc
4510 into the shared library. However, if we are linking with
4511 -Bsymbolic, we do not need to copy a reloc against a
4512 global symbol which is defined in an object we are
4513 including in the link (i.e., DEF_REGULAR is set). At
4514 this point we have not seen all the input files, so it is
4515 possible that DEF_REGULAR is not set now but will be set
4516 later (it is never cleared). In case of a weak definition,
4517 DEF_REGULAR may be cleared later by a strong definition in
4518 a shared library. We account for that possibility below by
4519 storing information in the dyn_relocs field of the hash
4520 table entry. A similar situation occurs when creating
4521 shared libraries and symbol visibility changes render the
4524 If on the other hand, we are creating an executable, we
4525 may need to keep relocations for symbols satisfied by a
4526 dynamic library if we manage to avoid copy relocs for the
4528 if ((bfd_link_pic (info)
4529 && (must_be_dyn_reloc (info, r_type)
4531 && (!SYMBOLIC_BIND (info, h)
4532 || h->root.type == bfd_link_hash_defweak
4533 || !h->def_regular))))
4534 || (ELIMINATE_COPY_RELOCS
4535 && !bfd_link_pic (info)
4537 && (h->root.type == bfd_link_hash_defweak
4538 || !h->def_regular)))
4542 "ppc_elf_check_relocs needs to "
4543 "create relocation for %s\n",
4544 (h && h->root.root.string
4545 ? h->root.root.string : "<unknown>"));
4549 if (htab->elf.dynobj == NULL)
4550 htab->elf.dynobj = abfd;
4552 sreloc = _bfd_elf_make_dynamic_reloc_section
4553 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4559 /* If this is a global symbol, we count the number of
4560 relocations we need for this symbol. */
4563 struct elf_dyn_relocs *p;
4564 struct elf_dyn_relocs **rel_head;
4566 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4568 if (p == NULL || p->sec != sec)
4570 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4573 p->next = *rel_head;
4580 if (!must_be_dyn_reloc (info, r_type))
4585 /* Track dynamic relocs needed for local syms too.
4586 We really need local syms available to do this
4588 struct ppc_dyn_relocs *p;
4589 struct ppc_dyn_relocs **rel_head;
4590 bfd_boolean is_ifunc;
4593 Elf_Internal_Sym *isym;
4595 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4600 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4604 vpp = &elf_section_data (s)->local_dynrel;
4605 rel_head = (struct ppc_dyn_relocs **) vpp;
4606 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4608 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4610 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4612 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4615 p->next = *rel_head;
4618 p->ifunc = is_ifunc;
4632 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4633 and OBFD, and merge non-conflicting ones. */
4635 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4637 bfd *obfd = info->output_bfd;
4638 obj_attribute *in_attr, *in_attrs;
4639 obj_attribute *out_attr, *out_attrs;
4641 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4642 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4644 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4645 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4647 if (in_attr->i != out_attr->i)
4649 int in_fp = in_attr->i & 3;
4650 int out_fp = out_attr->i & 3;
4654 else if (out_fp == 0)
4657 out_attr->i ^= in_fp;
4659 else if (out_fp != 2 && in_fp == 2)
4661 /* xgettext:c-format */
4662 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4663 else if (out_fp == 2 && in_fp != 2)
4665 /* xgettext:c-format */
4666 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4667 else if (out_fp == 1 && in_fp == 3)
4669 /* xgettext:c-format */
4670 (_("Warning: %B uses double-precision hard float, "
4671 "%B uses single-precision hard float"), obfd, ibfd);
4672 else if (out_fp == 3 && in_fp == 1)
4674 /* xgettext:c-format */
4675 (_("Warning: %B uses double-precision hard float, "
4676 "%B uses single-precision hard float"), ibfd, obfd);
4678 in_fp = in_attr->i & 0xc;
4679 out_fp = out_attr->i & 0xc;
4682 else if (out_fp == 0)
4685 out_attr->i ^= in_fp;
4687 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4689 /* xgettext:c-format */
4690 (_("Warning: %B uses 64-bit long double, "
4691 "%B uses 128-bit long double"), ibfd, obfd);
4692 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4694 /* xgettext:c-format */
4695 (_("Warning: %B uses 64-bit long double, "
4696 "%B uses 128-bit long double"), obfd, ibfd);
4697 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4699 /* xgettext:c-format */
4700 (_("Warning: %B uses IBM long double, "
4701 "%B uses IEEE long double"), ibfd, obfd);
4702 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4704 /* xgettext:c-format */
4705 (_("Warning: %B uses IBM long double, "
4706 "%B uses IEEE long double"), obfd, ibfd);
4710 /* Merge object attributes from IBFD into OBFD. Warn if
4711 there are conflicting attributes. */
4713 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4716 obj_attribute *in_attr, *in_attrs;
4717 obj_attribute *out_attr, *out_attrs;
4719 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4721 obfd = info->output_bfd;
4722 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4723 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4725 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4726 merge non-conflicting ones. */
4727 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4728 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4729 if (in_attr->i != out_attr->i)
4731 int in_vec = in_attr->i & 3;
4732 int out_vec = out_attr->i & 3;
4736 else if (out_vec == 0)
4739 out_attr->i = in_vec;
4741 /* For now, allow generic to transition to AltiVec or SPE
4742 without a warning. If GCC marked files with their stack
4743 alignment and used don't-care markings for files which are
4744 not affected by the vector ABI, we could warn about this
4746 else if (in_vec == 1)
4748 else if (out_vec == 1)
4751 out_attr->i = in_vec;
4753 else if (out_vec < in_vec)
4755 /* xgettext:c-format */
4756 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4758 else if (out_vec > in_vec)
4760 /* xgettext:c-format */
4761 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4765 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4766 and merge non-conflicting ones. */
4767 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4768 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4769 if (in_attr->i != out_attr->i)
4771 int in_struct = in_attr->i & 3;
4772 int out_struct = out_attr->i & 3;
4774 if (in_struct == 0 || in_struct == 3)
4776 else if (out_struct == 0)
4779 out_attr->i = in_struct;
4781 else if (out_struct < in_struct)
4783 /* xgettext:c-format */
4784 (_("Warning: %B uses r3/r4 for small structure returns, "
4785 "%B uses memory"), obfd, ibfd);
4786 else if (out_struct > in_struct)
4788 /* xgettext:c-format */
4789 (_("Warning: %B uses r3/r4 for small structure returns, "
4790 "%B uses memory"), ibfd, obfd);
4793 /* Merge Tag_compatibility attributes and any common GNU ones. */
4794 _bfd_elf_merge_object_attributes (ibfd, info);
4799 /* Merge backend specific data from an object file to the output
4800 object file when linking. */
4803 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4805 bfd *obfd = info->output_bfd;
4810 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4813 /* Check if we have the same endianness. */
4814 if (! _bfd_generic_verify_endian_match (ibfd, info))
4817 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4820 new_flags = elf_elfheader (ibfd)->e_flags;
4821 old_flags = elf_elfheader (obfd)->e_flags;
4822 if (!elf_flags_init (obfd))
4824 /* First call, no flags set. */
4825 elf_flags_init (obfd) = TRUE;
4826 elf_elfheader (obfd)->e_flags = new_flags;
4829 /* Compatible flags are ok. */
4830 else if (new_flags == old_flags)
4833 /* Incompatible flags. */
4836 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4837 to be linked with either. */
4839 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4840 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4844 (_("%B: compiled with -mrelocatable and linked with "
4845 "modules compiled normally"), ibfd);
4847 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4848 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4852 (_("%B: compiled normally and linked with "
4853 "modules compiled with -mrelocatable"), ibfd);
4856 /* The output is -mrelocatable-lib iff both the input files are. */
4857 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4858 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4860 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4861 but each input file is either -mrelocatable or -mrelocatable-lib. */
4862 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4863 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4864 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4865 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4867 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4868 any module uses it. */
4869 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4871 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4872 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4874 /* Warn about any other mismatches. */
4875 if (new_flags != old_flags)
4879 /* xgettext:c-format */
4880 (_("%B: uses different e_flags (0x%lx) fields "
4881 "than previous modules (0x%lx)"),
4882 ibfd, (long) new_flags, (long) old_flags);
4887 bfd_set_error (bfd_error_bad_value);
4896 ppc_elf_vle_split16 (bfd *input_bfd,
4897 asection *input_section,
4898 unsigned long offset,
4901 split16_format_type split16_format,
4904 unsigned int insn, opcode, top5;
4906 insn = bfd_get_32 (input_bfd, loc);
4907 opcode = insn & 0xf300f800;
4908 if (opcode == E_OR2I_INSN
4909 || opcode == E_AND2I_DOT_INSN
4910 || opcode == E_OR2IS_INSN
4911 || opcode == E_LIS_INSN
4912 || opcode == E_AND2IS_DOT_INSN)
4914 if (split16_format != split16a_type)
4917 split16_format = split16a_type;
4920 /* xgettext:c-format */
4921 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4922 input_bfd, input_section, offset, opcode);
4925 else if (opcode == E_ADD2I_DOT_INSN
4926 || opcode == E_ADD2IS_INSN
4927 || opcode == E_CMP16I_INSN
4928 || opcode == E_MULL2I_INSN
4929 || opcode == E_CMPL16I_INSN
4930 || opcode == E_CMPH16I_INSN
4931 || opcode == E_CMPHL16I_INSN)
4933 if (split16_format != split16d_type)
4936 split16_format = split16d_type;
4939 /* xgettext:c-format */
4940 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4941 input_bfd, input_section, offset, opcode);
4944 top5 = value & 0xf800;
4945 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4946 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4948 insn |= value & 0x7ff;
4949 bfd_put_32 (input_bfd, insn, loc);
4952 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4953 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4955 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4956 struct bfd_link_info *info)
4958 struct ppc_elf_link_hash_table *htab;
4961 htab = ppc_elf_hash_table (info);
4963 if (htab->plt_type == PLT_UNSET)
4965 struct elf_link_hash_entry *h;
4967 if (htab->params->plt_style == PLT_OLD)
4968 htab->plt_type = PLT_OLD;
4969 else if (bfd_link_pic (info)
4970 && htab->elf.dynamic_sections_created
4971 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4972 FALSE, FALSE, TRUE)) != NULL
4973 && (h->type == STT_FUNC
4976 && !(SYMBOL_CALLS_LOCAL (info, h)
4977 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4978 && h->root.type == bfd_link_hash_undefweak)))
4980 /* Profiling of shared libs (and pies) is not supported with
4981 secure plt, because ppc32 does profiling before a
4982 function prologue and a secure plt pic call stubs needs
4983 r30 to be set up. */
4984 htab->plt_type = PLT_OLD;
4989 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4991 /* Look through the reloc flags left by ppc_elf_check_relocs.
4992 Use the old style bss plt if a file makes plt calls
4993 without using the new relocs, and if ld isn't given
4994 --secure-plt and we never see REL16 relocs. */
4995 if (plt_type == PLT_UNSET)
4997 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4998 if (is_ppc_elf (ibfd))
5000 if (ppc_elf_tdata (ibfd)->has_rel16)
5002 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5005 htab->old_bfd = ibfd;
5009 htab->plt_type = plt_type;
5012 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5014 if (htab->old_bfd != NULL)
5015 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5018 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5021 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5023 if (htab->plt_type == PLT_NEW)
5025 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5026 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5028 /* The new PLT is a loaded section. */
5029 if (htab->elf.splt != NULL
5030 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5033 /* The new GOT is not executable. */
5034 if (htab->elf.sgot != NULL
5035 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5040 /* Stop an unused .glink section from affecting .text alignment. */
5041 if (htab->glink != NULL
5042 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5045 return htab->plt_type == PLT_NEW;
5048 /* Return the section that should be marked against GC for a given
5052 ppc_elf_gc_mark_hook (asection *sec,
5053 struct bfd_link_info *info,
5054 Elf_Internal_Rela *rel,
5055 struct elf_link_hash_entry *h,
5056 Elf_Internal_Sym *sym)
5059 switch (ELF32_R_TYPE (rel->r_info))
5061 case R_PPC_GNU_VTINHERIT:
5062 case R_PPC_GNU_VTENTRY:
5066 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5069 /* Update the got, plt and dynamic reloc reference counts for the
5070 section being removed. */
5073 ppc_elf_gc_sweep_hook (bfd *abfd,
5074 struct bfd_link_info *info,
5076 const Elf_Internal_Rela *relocs)
5078 struct ppc_elf_link_hash_table *htab;
5079 Elf_Internal_Shdr *symtab_hdr;
5080 struct elf_link_hash_entry **sym_hashes;
5081 bfd_signed_vma *local_got_refcounts;
5082 const Elf_Internal_Rela *rel, *relend;
5085 if (bfd_link_relocatable (info))
5088 if ((sec->flags & SEC_ALLOC) == 0)
5091 elf_section_data (sec)->local_dynrel = NULL;
5093 htab = ppc_elf_hash_table (info);
5094 symtab_hdr = &elf_symtab_hdr (abfd);
5095 sym_hashes = elf_sym_hashes (abfd);
5096 local_got_refcounts = elf_local_got_refcounts (abfd);
5097 got2 = bfd_get_section_by_name (abfd, ".got2");
5099 relend = relocs + sec->reloc_count;
5100 for (rel = relocs; rel < relend; rel++)
5102 unsigned long r_symndx;
5103 enum elf_ppc_reloc_type r_type;
5104 struct elf_link_hash_entry *h = NULL;
5106 r_symndx = ELF32_R_SYM (rel->r_info);
5107 if (r_symndx >= symtab_hdr->sh_info)
5109 struct elf_dyn_relocs **pp, *p;
5110 struct ppc_elf_link_hash_entry *eh;
5112 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5113 while (h->root.type == bfd_link_hash_indirect
5114 || h->root.type == bfd_link_hash_warning)
5115 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5116 eh = (struct ppc_elf_link_hash_entry *) h;
5118 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5121 /* Everything must go for SEC. */
5127 r_type = ELF32_R_TYPE (rel->r_info);
5128 if (!htab->is_vxworks
5130 && local_got_refcounts != NULL
5131 && (!bfd_link_pic (info)
5132 || is_branch_reloc (r_type)))
5134 struct plt_entry **local_plt = (struct plt_entry **)
5135 (local_got_refcounts + symtab_hdr->sh_info);
5136 char *local_got_tls_masks = (char *)
5137 (local_plt + symtab_hdr->sh_info);
5138 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5140 struct plt_entry **ifunc = local_plt + r_symndx;
5142 struct plt_entry *ent;
5144 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5145 addend = rel->r_addend;
5146 ent = find_plt_ent (ifunc, got2, addend);
5147 if (ent->plt.refcount > 0)
5148 ent->plt.refcount -= 1;
5155 case R_PPC_GOT_TLSLD16:
5156 case R_PPC_GOT_TLSLD16_LO:
5157 case R_PPC_GOT_TLSLD16_HI:
5158 case R_PPC_GOT_TLSLD16_HA:
5159 case R_PPC_GOT_TLSGD16:
5160 case R_PPC_GOT_TLSGD16_LO:
5161 case R_PPC_GOT_TLSGD16_HI:
5162 case R_PPC_GOT_TLSGD16_HA:
5163 case R_PPC_GOT_TPREL16:
5164 case R_PPC_GOT_TPREL16_LO:
5165 case R_PPC_GOT_TPREL16_HI:
5166 case R_PPC_GOT_TPREL16_HA:
5167 case R_PPC_GOT_DTPREL16:
5168 case R_PPC_GOT_DTPREL16_LO:
5169 case R_PPC_GOT_DTPREL16_HI:
5170 case R_PPC_GOT_DTPREL16_HA:
5172 case R_PPC_GOT16_LO:
5173 case R_PPC_GOT16_HI:
5174 case R_PPC_GOT16_HA:
5177 if (h->got.refcount > 0)
5179 if (!bfd_link_pic (info))
5181 struct plt_entry *ent;
5183 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5184 if (ent != NULL && ent->plt.refcount > 0)
5185 ent->plt.refcount -= 1;
5188 else if (local_got_refcounts != NULL)
5190 if (local_got_refcounts[r_symndx] > 0)
5191 local_got_refcounts[r_symndx]--;
5197 case R_PPC_REL14_BRTAKEN:
5198 case R_PPC_REL14_BRNTAKEN:
5200 if (h == NULL || h == htab->elf.hgot)
5207 case R_PPC_ADDR16_LO:
5208 case R_PPC_ADDR16_HI:
5209 case R_PPC_ADDR16_HA:
5211 case R_PPC_ADDR14_BRTAKEN:
5212 case R_PPC_ADDR14_BRNTAKEN:
5215 if (bfd_link_pic (info))
5220 case R_PPC_PLTREL24:
5221 case R_PPC_PLTREL32:
5222 case R_PPC_PLT16_LO:
5223 case R_PPC_PLT16_HI:
5224 case R_PPC_PLT16_HA:
5228 struct plt_entry *ent;
5230 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5231 addend = rel->r_addend;
5232 ent = find_plt_ent (&h->plt.plist, got2, addend);
5233 if (ent != NULL && ent->plt.refcount > 0)
5234 ent->plt.refcount -= 1;
5245 /* Set plt output section type, htab->tls_get_addr, and call the
5246 generic ELF tls_setup function. */
5249 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5251 struct ppc_elf_link_hash_table *htab;
5253 htab = ppc_elf_hash_table (info);
5254 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5255 FALSE, FALSE, TRUE);
5256 if (htab->plt_type != PLT_NEW)
5257 htab->params->no_tls_get_addr_opt = TRUE;
5259 if (!htab->params->no_tls_get_addr_opt)
5261 struct elf_link_hash_entry *opt, *tga;
5262 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5263 FALSE, FALSE, TRUE);
5265 && (opt->root.type == bfd_link_hash_defined
5266 || opt->root.type == bfd_link_hash_defweak))
5268 /* If glibc supports an optimized __tls_get_addr call stub,
5269 signalled by the presence of __tls_get_addr_opt, and we'll
5270 be calling __tls_get_addr via a plt call stub, then
5271 make __tls_get_addr point to __tls_get_addr_opt. */
5272 tga = htab->tls_get_addr;
5273 if (htab->elf.dynamic_sections_created
5275 && (tga->type == STT_FUNC
5277 && !(SYMBOL_CALLS_LOCAL (info, tga)
5278 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5279 && tga->root.type == bfd_link_hash_undefweak)))
5281 struct plt_entry *ent;
5282 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5283 if (ent->plt.refcount > 0)
5287 tga->root.type = bfd_link_hash_indirect;
5288 tga->root.u.i.link = &opt->root;
5289 ppc_elf_copy_indirect_symbol (info, opt, tga);
5291 if (opt->dynindx != -1)
5293 /* Use __tls_get_addr_opt in dynamic relocations. */
5295 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5297 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5300 htab->tls_get_addr = opt;
5305 htab->params->no_tls_get_addr_opt = TRUE;
5307 if (htab->plt_type == PLT_NEW
5308 && htab->elf.splt != NULL
5309 && htab->elf.splt->output_section != NULL)
5311 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5312 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5315 return _bfd_elf_tls_setup (obfd, info);
5318 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5322 branch_reloc_hash_match (const bfd *ibfd,
5323 const Elf_Internal_Rela *rel,
5324 const struct elf_link_hash_entry *hash)
5326 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5327 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5328 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5330 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5332 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5333 struct elf_link_hash_entry *h;
5335 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5336 while (h->root.type == bfd_link_hash_indirect
5337 || h->root.type == bfd_link_hash_warning)
5338 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5345 /* Run through all the TLS relocs looking for optimization
5349 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5350 struct bfd_link_info *info)
5354 struct ppc_elf_link_hash_table *htab;
5357 if (!bfd_link_executable (info))
5360 htab = ppc_elf_hash_table (info);
5364 /* Make two passes through the relocs. First time check that tls
5365 relocs involved in setting up a tls_get_addr call are indeed
5366 followed by such a call. If they are not, don't do any tls
5367 optimization. On the second pass twiddle tls_mask flags to
5368 notify relocate_section that optimization can be done, and
5369 adjust got and plt refcounts. */
5370 for (pass = 0; pass < 2; ++pass)
5371 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5373 Elf_Internal_Sym *locsyms = NULL;
5374 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5375 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5377 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5378 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5380 Elf_Internal_Rela *relstart, *rel, *relend;
5381 int expecting_tls_get_addr = 0;
5383 /* Read the relocations. */
5384 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5386 if (relstart == NULL)
5389 relend = relstart + sec->reloc_count;
5390 for (rel = relstart; rel < relend; rel++)
5392 enum elf_ppc_reloc_type r_type;
5393 unsigned long r_symndx;
5394 struct elf_link_hash_entry *h = NULL;
5396 char tls_set, tls_clear;
5397 bfd_boolean is_local;
5398 bfd_signed_vma *got_count;
5400 r_symndx = ELF32_R_SYM (rel->r_info);
5401 if (r_symndx >= symtab_hdr->sh_info)
5403 struct elf_link_hash_entry **sym_hashes;
5405 sym_hashes = elf_sym_hashes (ibfd);
5406 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5407 while (h->root.type == bfd_link_hash_indirect
5408 || h->root.type == bfd_link_hash_warning)
5409 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5417 r_type = ELF32_R_TYPE (rel->r_info);
5418 /* If this section has old-style __tls_get_addr calls
5419 without marker relocs, then check that each
5420 __tls_get_addr call reloc is preceded by a reloc
5421 that conceivably belongs to the __tls_get_addr arg
5422 setup insn. If we don't find matching arg setup
5423 relocs, don't do any tls optimization. */
5425 && sec->has_tls_get_addr_call
5427 && h == htab->tls_get_addr
5428 && !expecting_tls_get_addr
5429 && is_branch_reloc (r_type))
5431 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5432 "TLS optimization disabled\n",
5433 ibfd, sec, rel->r_offset);
5434 if (elf_section_data (sec)->relocs != relstart)
5439 expecting_tls_get_addr = 0;
5442 case R_PPC_GOT_TLSLD16:
5443 case R_PPC_GOT_TLSLD16_LO:
5444 expecting_tls_get_addr = 1;
5447 case R_PPC_GOT_TLSLD16_HI:
5448 case R_PPC_GOT_TLSLD16_HA:
5449 /* These relocs should never be against a symbol
5450 defined in a shared lib. Leave them alone if
5451 that turns out to be the case. */
5460 case R_PPC_GOT_TLSGD16:
5461 case R_PPC_GOT_TLSGD16_LO:
5462 expecting_tls_get_addr = 1;
5465 case R_PPC_GOT_TLSGD16_HI:
5466 case R_PPC_GOT_TLSGD16_HA:
5472 tls_set = TLS_TLS | TLS_TPRELGD;
5476 case R_PPC_GOT_TPREL16:
5477 case R_PPC_GOT_TPREL16_LO:
5478 case R_PPC_GOT_TPREL16_HI:
5479 case R_PPC_GOT_TPREL16_HA:
5484 tls_clear = TLS_TPREL;
5492 expecting_tls_get_addr = 2;
5503 if (!expecting_tls_get_addr
5504 || (expecting_tls_get_addr == 1
5505 && !sec->has_tls_get_addr_call))
5508 if (rel + 1 < relend
5509 && branch_reloc_hash_match (ibfd, rel + 1,
5510 htab->tls_get_addr))
5513 /* Uh oh, we didn't find the expected call. We
5514 could just mark this symbol to exclude it
5515 from tls optimization but it's safer to skip
5516 the entire optimization. */
5517 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5518 "TLS optimization disabled\n"),
5519 ibfd, sec, rel->r_offset);
5520 if (elf_section_data (sec)->relocs != relstart)
5525 if (expecting_tls_get_addr)
5527 struct plt_entry *ent;
5530 if (bfd_link_pic (info)
5531 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5532 addend = rel[1].r_addend;
5533 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5535 if (ent != NULL && ent->plt.refcount > 0)
5536 ent->plt.refcount -= 1;
5538 if (expecting_tls_get_addr == 2)
5544 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5545 got_count = &h->got.refcount;
5549 bfd_signed_vma *lgot_refs;
5550 struct plt_entry **local_plt;
5553 if (locsyms == NULL)
5555 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5556 if (locsyms == NULL)
5557 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5558 symtab_hdr->sh_info,
5559 0, NULL, NULL, NULL);
5560 if (locsyms == NULL)
5562 if (elf_section_data (sec)->relocs != relstart)
5567 lgot_refs = elf_local_got_refcounts (ibfd);
5568 if (lgot_refs == NULL)
5570 local_plt = (struct plt_entry **)
5571 (lgot_refs + symtab_hdr->sh_info);
5572 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5573 tls_mask = &lgot_masks[r_symndx];
5574 got_count = &lgot_refs[r_symndx];
5579 /* We managed to get rid of a got entry. */
5584 *tls_mask |= tls_set;
5585 *tls_mask &= ~tls_clear;
5588 if (elf_section_data (sec)->relocs != relstart)
5593 && (symtab_hdr->contents != (unsigned char *) locsyms))
5595 if (!info->keep_memory)
5598 symtab_hdr->contents = (unsigned char *) locsyms;
5604 /* Return true if we have dynamic relocs that apply to read-only sections. */
5607 readonly_dynrelocs (struct elf_link_hash_entry *h)
5609 struct elf_dyn_relocs *p;
5611 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5613 asection *s = p->sec->output_section;
5616 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5617 == (SEC_READONLY | SEC_ALLOC)))
5623 /* Adjust a symbol defined by a dynamic object and referenced by a
5624 regular object. The current definition is in some section of the
5625 dynamic object, but we're not including those sections. We have to
5626 change the definition to something the rest of the link can
5630 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5631 struct elf_link_hash_entry *h)
5633 struct ppc_elf_link_hash_table *htab;
5637 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5638 h->root.root.string);
5641 /* Make sure we know what is going on here. */
5642 htab = ppc_elf_hash_table (info);
5643 BFD_ASSERT (htab->elf.dynobj != NULL
5645 || h->type == STT_GNU_IFUNC
5646 || h->u.weakdef != NULL
5649 && !h->def_regular)));
5651 /* Deal with function syms. */
5652 if (h->type == STT_FUNC
5653 || h->type == STT_GNU_IFUNC
5656 /* Clear procedure linkage table information for any symbol that
5657 won't need a .plt entry. */
5658 struct plt_entry *ent;
5659 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5660 if (ent->plt.refcount > 0)
5663 || (h->type != STT_GNU_IFUNC
5664 && (SYMBOL_CALLS_LOCAL (info, h)
5665 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5666 && h->root.type == bfd_link_hash_undefweak))))
5668 /* A PLT entry is not required/allowed when:
5670 1. We are not using ld.so; because then the PLT entry
5671 can't be set up, so we can't use one. In this case,
5672 ppc_elf_adjust_dynamic_symbol won't even be called.
5674 2. GC has rendered the entry unused.
5676 3. We know for certain that a call to this symbol
5677 will go to this object, or will remain undefined. */
5678 h->plt.plist = NULL;
5680 h->pointer_equality_needed = 0;
5684 /* Taking a function's address in a read/write section
5685 doesn't require us to define the function symbol in the
5686 executable on a plt call stub. A dynamic reloc can
5687 be used instead, giving better runtime performance.
5688 (Calls via that function pointer don't need to bounce
5689 through the plt call stub.) Similarly, use a dynamic
5690 reloc for a weak reference when possible, allowing the
5691 resolution of the symbol to be set at load time rather
5693 if ((h->pointer_equality_needed
5694 || (!h->ref_regular_nonweak && h->non_got_ref))
5695 && !htab->is_vxworks
5696 && !ppc_elf_hash_entry (h)->has_sda_refs
5697 && !readonly_dynrelocs (h))
5699 h->pointer_equality_needed = 0;
5700 /* After adjust_dynamic_symbol, non_got_ref set in the
5701 non-pic case means that dyn_relocs for this symbol
5702 should be discarded. */
5706 h->protected_def = 0;
5710 h->plt.plist = NULL;
5712 /* If this is a weak symbol, and there is a real definition, the
5713 processor independent code will have arranged for us to see the
5714 real definition first, and we can just use the same value. */
5715 if (h->u.weakdef != NULL)
5717 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5718 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5719 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5720 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5721 if (ELIMINATE_COPY_RELOCS)
5722 h->non_got_ref = h->u.weakdef->non_got_ref;
5726 /* This is a reference to a symbol defined by a dynamic object which
5727 is not a function. */
5729 /* If we are creating a shared library, we must presume that the
5730 only references to the symbol are via the global offset table.
5731 For such cases we need not do anything here; the relocations will
5732 be handled correctly by relocate_section. */
5733 if (bfd_link_pic (info))
5735 h->protected_def = 0;
5739 /* If there are no references to this symbol that do not use the
5740 GOT, we don't need to generate a copy reloc. */
5741 if (!h->non_got_ref)
5743 h->protected_def = 0;
5747 /* Protected variables do not work with .dynbss. The copy in
5748 .dynbss won't be used by the shared library with the protected
5749 definition for the variable. Editing to PIC, or text relocations
5750 are preferable to an incorrect program. */
5751 if (h->protected_def)
5753 if (ELIMINATE_COPY_RELOCS
5754 && ppc_elf_hash_entry (h)->has_addr16_ha
5755 && ppc_elf_hash_entry (h)->has_addr16_lo
5756 && htab->params->pic_fixup == 0
5757 && info->disable_target_specific_optimizations <= 1)
5758 htab->params->pic_fixup = 1;
5763 /* If -z nocopyreloc was given, we won't generate them either. */
5764 if (info->nocopyreloc)
5770 /* If we didn't find any dynamic relocs in read-only sections, then
5771 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5772 We can't do this if there are any small data relocations. This
5773 doesn't work on VxWorks, where we can not have dynamic
5774 relocations (other than copy and jump slot relocations) in an
5776 if (ELIMINATE_COPY_RELOCS
5777 && !ppc_elf_hash_entry (h)->has_sda_refs
5778 && !htab->is_vxworks
5780 && !readonly_dynrelocs (h))
5786 /* We must allocate the symbol in our .dynbss section, which will
5787 become part of the .bss section of the executable. There will be
5788 an entry for this symbol in the .dynsym section. The dynamic
5789 object will contain position independent code, so all references
5790 from the dynamic object to this symbol will go through the global
5791 offset table. The dynamic linker will use the .dynsym entry to
5792 determine the address it must put in the global offset table, so
5793 both the dynamic object and the regular object will refer to the
5794 same memory location for the variable.
5796 Of course, if the symbol is referenced using SDAREL relocs, we
5797 must instead allocate it in .sbss. */
5799 if (ppc_elf_hash_entry (h)->has_sda_refs)
5801 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5802 s = htab->elf.sdynrelro;
5804 s = htab->elf.sdynbss;
5805 BFD_ASSERT (s != NULL);
5807 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5808 copy the initial value out of the dynamic object and into the
5809 runtime process image. We need to remember the offset into the
5810 .rela.bss section we are going to use. */
5811 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5815 if (ppc_elf_hash_entry (h)->has_sda_refs)
5816 srel = htab->relsbss;
5817 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5818 srel = htab->elf.sreldynrelro;
5820 srel = htab->elf.srelbss;
5821 BFD_ASSERT (srel != NULL);
5822 srel->size += sizeof (Elf32_External_Rela);
5826 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5829 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5830 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5831 specifying the addend on the plt relocation. For -fpic code, the sym
5832 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5833 xxxxxxxx.got2.plt_pic32.<callee>. */
5836 add_stub_sym (struct plt_entry *ent,
5837 struct elf_link_hash_entry *h,
5838 struct bfd_link_info *info)
5840 struct elf_link_hash_entry *sh;
5841 size_t len1, len2, len3;
5844 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5846 if (bfd_link_pic (info))
5847 stub = ".plt_pic32.";
5849 stub = ".plt_call32.";
5851 len1 = strlen (h->root.root.string);
5852 len2 = strlen (stub);
5855 len3 = strlen (ent->sec->name);
5856 name = bfd_malloc (len1 + len2 + len3 + 9);
5859 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5861 memcpy (name + 8, ent->sec->name, len3);
5862 memcpy (name + 8 + len3, stub, len2);
5863 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5864 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5867 if (sh->root.type == bfd_link_hash_new)
5869 sh->root.type = bfd_link_hash_defined;
5870 sh->root.u.def.section = htab->glink;
5871 sh->root.u.def.value = ent->glink_offset;
5872 sh->ref_regular = 1;
5873 sh->def_regular = 1;
5874 sh->ref_regular_nonweak = 1;
5875 sh->forced_local = 1;
5877 sh->root.linker_def = 1;
5882 /* Allocate NEED contiguous space in .got, and return the offset.
5883 Handles allocation of the got header when crossing 32k. */
5886 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5889 unsigned int max_before_header;
5891 if (htab->plt_type == PLT_VXWORKS)
5893 where = htab->elf.sgot->size;
5894 htab->elf.sgot->size += need;
5898 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5899 if (need <= htab->got_gap)
5901 where = max_before_header - htab->got_gap;
5902 htab->got_gap -= need;
5906 if (htab->elf.sgot->size + need > max_before_header
5907 && htab->elf.sgot->size <= max_before_header)
5909 htab->got_gap = max_before_header - htab->elf.sgot->size;
5910 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5912 where = htab->elf.sgot->size;
5913 htab->elf.sgot->size += need;
5919 /* If H is undefined weak, make it dynamic if that makes sense. */
5922 ensure_undefweak_dynamic (struct bfd_link_info *info,
5923 struct elf_link_hash_entry *h)
5925 struct elf_link_hash_table *htab = elf_hash_table (info);
5927 if (htab->dynamic_sections_created
5928 && h->root.type == bfd_link_hash_undefweak
5931 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5932 return bfd_elf_link_record_dynamic_symbol (info, h);
5936 /* Allocate space in associated reloc sections for dynamic relocs. */
5939 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5941 struct bfd_link_info *info = inf;
5942 struct ppc_elf_link_hash_entry *eh;
5943 struct ppc_elf_link_hash_table *htab;
5944 struct elf_dyn_relocs *p;
5947 if (h->root.type == bfd_link_hash_indirect)
5950 htab = ppc_elf_hash_table (info);
5951 eh = (struct ppc_elf_link_hash_entry *) h;
5952 if (eh->elf.got.refcount > 0
5953 || (ELIMINATE_COPY_RELOCS
5954 && !eh->elf.def_regular
5955 && eh->elf.protected_def
5956 && eh->has_addr16_ha
5957 && eh->has_addr16_lo
5958 && htab->params->pic_fixup > 0))
5962 /* Make sure this symbol is output as a dynamic symbol.
5963 Undefined weak syms won't yet be marked as dynamic. */
5964 if (!ensure_undefweak_dynamic (info, &eh->elf))
5968 if ((eh->tls_mask & TLS_TLS) != 0)
5970 if ((eh->tls_mask & TLS_LD) != 0)
5972 if (!eh->elf.def_dynamic)
5973 /* We'll just use htab->tlsld_got.offset. This should
5974 always be the case. It's a little odd if we have
5975 a local dynamic reloc against a non-local symbol. */
5976 htab->tlsld_got.refcount += 1;
5980 if ((eh->tls_mask & TLS_GD) != 0)
5982 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5984 if ((eh->tls_mask & TLS_DTPREL) != 0)
5990 eh->elf.got.offset = (bfd_vma) -1;
5993 eh->elf.got.offset = allocate_got (htab, need);
5994 if ((bfd_link_pic (info)
5995 || (htab->elf.dynamic_sections_created
5996 && eh->elf.dynindx != -1
5997 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5998 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
5999 || eh->elf.root.type != bfd_link_hash_undefweak))
6001 asection *rsec = htab->elf.srelgot;
6003 if (eh->elf.type == STT_GNU_IFUNC)
6004 rsec = htab->elf.irelplt;
6005 /* All the entries we allocated need relocs.
6006 Except LD only needs one. */
6007 if ((eh->tls_mask & TLS_LD) != 0
6008 && eh->elf.def_dynamic)
6010 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6015 eh->elf.got.offset = (bfd_vma) -1;
6017 if (!htab->elf.dynamic_sections_created
6018 && h->type != STT_GNU_IFUNC)
6019 eh->dyn_relocs = NULL;
6021 if (eh->dyn_relocs == NULL)
6024 /* In the shared -Bsymbolic case, discard space allocated for
6025 dynamic pc-relative relocs against symbols which turn out to be
6026 defined in regular objects. For the normal shared case, discard
6027 space for relocs that have become local due to symbol visibility
6029 else if (bfd_link_pic (info))
6031 /* Relocs that use pc_count are those that appear on a call insn,
6032 or certain REL relocs (see must_be_dyn_reloc) that can be
6033 generated via assembly. We want calls to protected symbols to
6034 resolve directly to the function rather than going via the plt.
6035 If people want function pointer comparisons to work as expected
6036 then they should avoid writing weird assembly. */
6037 if (SYMBOL_CALLS_LOCAL (info, h))
6039 struct elf_dyn_relocs **pp;
6041 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6043 p->count -= p->pc_count;
6052 if (htab->is_vxworks)
6054 struct elf_dyn_relocs **pp;
6056 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6058 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6065 /* Discard relocs on undefined symbols that must be local. */
6066 if (eh->dyn_relocs != NULL
6067 && h->root.type == bfd_link_hash_undefined
6068 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6069 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6070 eh->dyn_relocs = NULL;
6072 /* Also discard relocs on undefined weak syms with non-default
6074 if (eh->dyn_relocs != NULL
6075 && h->root.type == bfd_link_hash_undefweak)
6077 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6078 eh->dyn_relocs = NULL;
6080 /* Make sure undefined weak symbols are output as a dynamic
6082 else if (!ensure_undefweak_dynamic (info, h))
6086 else if (ELIMINATE_COPY_RELOCS)
6088 /* For the non-pic case, discard space for relocs against
6089 symbols which turn out to need copy relocs or are not
6093 && !(h->protected_def
6094 && eh->has_addr16_ha
6095 && eh->has_addr16_lo
6096 && htab->params->pic_fixup > 0))
6098 /* Make sure this symbol is output as a dynamic symbol.
6099 Undefined weak syms won't yet be marked as dynamic. */
6100 if (!ensure_undefweak_dynamic (info, h))
6103 if (h->dynindx == -1)
6104 eh->dyn_relocs = NULL;
6107 eh->dyn_relocs = NULL;
6110 /* Allocate space. */
6111 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6113 asection *sreloc = elf_section_data (p->sec)->sreloc;
6114 if (eh->elf.type == STT_GNU_IFUNC)
6115 sreloc = htab->elf.irelplt;
6116 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6119 /* Handle PLT relocs. Done last, after dynindx has settled. */
6120 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6121 if (dyn || h->type == STT_GNU_IFUNC)
6123 struct plt_entry *ent;
6124 bfd_boolean doneone = FALSE;
6125 bfd_vma plt_offset = 0, glink_offset = 0;
6127 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6128 if (ent->plt.refcount > 0)
6130 asection *s = htab->elf.splt;
6135 if (htab->plt_type == PLT_NEW || !dyn)
6139 plt_offset = s->size;
6142 ent->plt.offset = plt_offset;
6145 if (!doneone || bfd_link_pic (info))
6147 glink_offset = s->size;
6148 s->size += GLINK_ENTRY_SIZE;
6149 if (h == htab->tls_get_addr
6150 && !htab->params->no_tls_get_addr_opt)
6151 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
6154 && !bfd_link_pic (info)
6158 h->root.u.def.section = s;
6159 h->root.u.def.value = glink_offset;
6161 ent->glink_offset = glink_offset;
6163 if (htab->params->emit_stub_syms
6164 && !add_stub_sym (ent, h, info))
6171 /* If this is the first .plt entry, make room
6172 for the special first entry. */
6174 s->size += htab->plt_initial_entry_size;
6176 /* The PowerPC PLT is actually composed of two
6177 parts, the first part is 2 words (for a load
6178 and a jump), and then there is a remaining
6179 word available at the end. */
6180 plt_offset = (htab->plt_initial_entry_size
6181 + (htab->plt_slot_size
6183 - htab->plt_initial_entry_size)
6184 / htab->plt_entry_size)));
6186 /* If this symbol is not defined in a regular
6187 file, and we are not generating a shared
6188 library, then set the symbol to this location
6189 in the .plt. This is to avoid text
6190 relocations, and is required to make
6191 function pointers compare as equal between
6192 the normal executable and the shared library. */
6193 if (! bfd_link_pic (info)
6197 h->root.u.def.section = s;
6198 h->root.u.def.value = plt_offset;
6201 /* Make room for this entry. */
6202 s->size += htab->plt_entry_size;
6203 /* After the 8192nd entry, room for two entries
6205 if (htab->plt_type == PLT_OLD
6206 && (s->size - htab->plt_initial_entry_size)
6207 / htab->plt_entry_size
6208 > PLT_NUM_SINGLE_ENTRIES)
6209 s->size += htab->plt_entry_size;
6211 ent->plt.offset = plt_offset;
6214 /* We also need to make an entry in the .rela.plt section. */
6218 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6221 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6223 if (htab->plt_type == PLT_VXWORKS)
6225 /* Allocate space for the unloaded relocations. */
6226 if (!bfd_link_pic (info)
6227 && htab->elf.dynamic_sections_created)
6230 == (bfd_vma) htab->plt_initial_entry_size)
6232 htab->srelplt2->size
6233 += (sizeof (Elf32_External_Rela)
6234 * VXWORKS_PLTRESOLVE_RELOCS);
6237 htab->srelplt2->size
6238 += (sizeof (Elf32_External_Rela)
6239 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6242 /* Every PLT entry has an associated GOT entry in
6244 htab->elf.sgotplt->size += 4;
6251 ent->plt.offset = (bfd_vma) -1;
6255 h->plt.plist = NULL;
6261 h->plt.plist = NULL;
6268 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6269 read-only sections. */
6272 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6274 if (h->root.type == bfd_link_hash_indirect)
6277 if (readonly_dynrelocs (h))
6279 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6281 /* Not an error, just cut short the traversal. */
6287 static const unsigned char glink_eh_frame_cie[] =
6289 0, 0, 0, 16, /* length. */
6290 0, 0, 0, 0, /* id. */
6291 1, /* CIE version. */
6292 'z', 'R', 0, /* Augmentation string. */
6293 4, /* Code alignment. */
6294 0x7c, /* Data alignment. */
6296 1, /* Augmentation size. */
6297 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6298 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6301 /* Set the sizes of the dynamic sections. */
6304 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6305 struct bfd_link_info *info)
6307 struct ppc_elf_link_hash_table *htab;
6313 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6316 htab = ppc_elf_hash_table (info);
6317 BFD_ASSERT (htab->elf.dynobj != NULL);
6319 if (elf_hash_table (info)->dynamic_sections_created)
6321 /* Set the contents of the .interp section to the interpreter. */
6322 if (bfd_link_executable (info) && !info->nointerp)
6324 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6325 BFD_ASSERT (s != NULL);
6326 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6327 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6331 if (htab->plt_type == PLT_OLD)
6332 htab->got_header_size = 16;
6333 else if (htab->plt_type == PLT_NEW)
6334 htab->got_header_size = 12;
6336 /* Set up .got offsets for local syms, and space for local dynamic
6338 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6340 bfd_signed_vma *local_got;
6341 bfd_signed_vma *end_local_got;
6342 struct plt_entry **local_plt;
6343 struct plt_entry **end_local_plt;
6345 bfd_size_type locsymcount;
6346 Elf_Internal_Shdr *symtab_hdr;
6348 if (!is_ppc_elf (ibfd))
6351 for (s = ibfd->sections; s != NULL; s = s->next)
6353 struct ppc_dyn_relocs *p;
6355 for (p = ((struct ppc_dyn_relocs *)
6356 elf_section_data (s)->local_dynrel);
6360 if (!bfd_is_abs_section (p->sec)
6361 && bfd_is_abs_section (p->sec->output_section))
6363 /* Input section has been discarded, either because
6364 it is a copy of a linkonce section or due to
6365 linker script /DISCARD/, so we'll be discarding
6368 else if (htab->is_vxworks
6369 && strcmp (p->sec->output_section->name,
6372 /* Relocations in vxworks .tls_vars sections are
6373 handled specially by the loader. */
6375 else if (p->count != 0)
6377 asection *sreloc = elf_section_data (p->sec)->sreloc;
6379 sreloc = htab->elf.irelplt;
6380 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6381 if ((p->sec->output_section->flags
6382 & (SEC_READONLY | SEC_ALLOC))
6383 == (SEC_READONLY | SEC_ALLOC))
6384 info->flags |= DF_TEXTREL;
6389 local_got = elf_local_got_refcounts (ibfd);
6393 symtab_hdr = &elf_symtab_hdr (ibfd);
6394 locsymcount = symtab_hdr->sh_info;
6395 end_local_got = local_got + locsymcount;
6396 local_plt = (struct plt_entry **) end_local_got;
6397 end_local_plt = local_plt + locsymcount;
6398 lgot_masks = (char *) end_local_plt;
6400 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6403 unsigned int need = 0;
6404 if ((*lgot_masks & TLS_TLS) != 0)
6406 if ((*lgot_masks & TLS_GD) != 0)
6408 if ((*lgot_masks & TLS_LD) != 0)
6409 htab->tlsld_got.refcount += 1;
6410 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6412 if ((*lgot_masks & TLS_DTPREL) != 0)
6418 *local_got = (bfd_vma) -1;
6421 *local_got = allocate_got (htab, need);
6422 if (bfd_link_pic (info))
6424 asection *srel = htab->elf.srelgot;
6425 if ((*lgot_masks & PLT_IFUNC) != 0)
6426 srel = htab->elf.irelplt;
6427 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6432 *local_got = (bfd_vma) -1;
6434 if (htab->is_vxworks)
6437 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6438 for (; local_plt < end_local_plt; ++local_plt)
6440 struct plt_entry *ent;
6441 bfd_boolean doneone = FALSE;
6442 bfd_vma plt_offset = 0, glink_offset = 0;
6444 for (ent = *local_plt; ent != NULL; ent = ent->next)
6445 if (ent->plt.refcount > 0)
6451 plt_offset = s->size;
6454 ent->plt.offset = plt_offset;
6457 if (!doneone || bfd_link_pic (info))
6459 glink_offset = s->size;
6460 s->size += GLINK_ENTRY_SIZE;
6462 ent->glink_offset = glink_offset;
6466 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6471 ent->plt.offset = (bfd_vma) -1;
6475 /* Allocate space for global sym dynamic relocs. */
6476 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6478 if (htab->tlsld_got.refcount > 0)
6480 htab->tlsld_got.offset = allocate_got (htab, 8);
6481 if (bfd_link_pic (info))
6482 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6485 htab->tlsld_got.offset = (bfd_vma) -1;
6487 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6489 unsigned int g_o_t = 32768;
6491 /* If we haven't allocated the header, do so now. When we get here,
6492 for old plt/got the got size will be 0 to 32764 (not allocated),
6493 or 32780 to 65536 (header allocated). For new plt/got, the
6494 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6495 if (htab->elf.sgot->size <= 32768)
6497 g_o_t = htab->elf.sgot->size;
6498 if (htab->plt_type == PLT_OLD)
6500 htab->elf.sgot->size += htab->got_header_size;
6503 htab->elf.hgot->root.u.def.value = g_o_t;
6505 if (bfd_link_pic (info))
6507 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6509 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6510 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6512 if (info->emitrelocations)
6514 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6516 if (sda != NULL && sda->ref_regular)
6517 sda->root.u.def.section->flags |= SEC_KEEP;
6518 sda = htab->sdata[1].sym;
6519 if (sda != NULL && sda->ref_regular)
6520 sda->root.u.def.section->flags |= SEC_KEEP;
6523 if (htab->glink != NULL
6524 && htab->glink->size != 0
6525 && htab->elf.dynamic_sections_created)
6527 htab->glink_pltresolve = htab->glink->size;
6528 /* Space for the branch table. ??? We don't need entries for
6529 non-dynamic symbols in this table. This case can arise with
6530 static ifuncs or forced local ifuncs. */
6531 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6532 /* Pad out to align the start of PLTresolve. */
6533 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6535 htab->glink->size += GLINK_PLTRESOLVE;
6537 if (htab->params->emit_stub_syms)
6539 struct elf_link_hash_entry *sh;
6540 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6541 TRUE, FALSE, FALSE);
6544 if (sh->root.type == bfd_link_hash_new)
6546 sh->root.type = bfd_link_hash_defined;
6547 sh->root.u.def.section = htab->glink;
6548 sh->root.u.def.value = htab->glink_pltresolve;
6549 sh->ref_regular = 1;
6550 sh->def_regular = 1;
6551 sh->ref_regular_nonweak = 1;
6552 sh->forced_local = 1;
6554 sh->root.linker_def = 1;
6556 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6557 TRUE, FALSE, FALSE);
6560 if (sh->root.type == bfd_link_hash_new)
6562 sh->root.type = bfd_link_hash_defined;
6563 sh->root.u.def.section = htab->glink;
6564 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6565 sh->ref_regular = 1;
6566 sh->def_regular = 1;
6567 sh->ref_regular_nonweak = 1;
6568 sh->forced_local = 1;
6570 sh->root.linker_def = 1;
6575 if (htab->glink != NULL
6576 && htab->glink->size != 0
6577 && htab->glink_eh_frame != NULL
6578 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6579 && _bfd_elf_eh_frame_present (info))
6581 s = htab->glink_eh_frame;
6582 s->size = sizeof (glink_eh_frame_cie) + 20;
6583 if (bfd_link_pic (info))
6586 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6591 /* We've now determined the sizes of the various dynamic sections.
6592 Allocate memory for them. */
6594 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6596 bfd_boolean strip_section = TRUE;
6598 if ((s->flags & SEC_LINKER_CREATED) == 0)
6601 if (s == htab->elf.splt
6602 || s == htab->elf.sgot)
6604 /* We'd like to strip these sections if they aren't needed, but if
6605 we've exported dynamic symbols from them we must leave them.
6606 It's too late to tell BFD to get rid of the symbols. */
6607 if (htab->elf.hplt != NULL)
6608 strip_section = FALSE;
6609 /* Strip this section if we don't need it; see the
6612 else if (s == htab->elf.iplt
6614 || s == htab->glink_eh_frame
6615 || s == htab->elf.sgotplt
6617 || s == htab->elf.sdynbss
6618 || s == htab->elf.sdynrelro
6619 || s == htab->dynsbss)
6621 /* Strip these too. */
6623 else if (s == htab->sdata[0].section
6624 || s == htab->sdata[1].section)
6626 strip_section = (s->flags & SEC_KEEP) == 0;
6628 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6633 /* Remember whether there are any relocation sections. */
6636 /* We use the reloc_count field as a counter if we need
6637 to copy relocs into the output file. */
6643 /* It's not one of our sections, so don't allocate space. */
6647 if (s->size == 0 && strip_section)
6649 /* If we don't need this section, strip it from the
6650 output file. This is mostly to handle .rela.bss and
6651 .rela.plt. We must create both sections in
6652 create_dynamic_sections, because they must be created
6653 before the linker maps input sections to output
6654 sections. The linker does that before
6655 adjust_dynamic_symbol is called, and it is that
6656 function which decides whether anything needs to go
6657 into these sections. */
6658 s->flags |= SEC_EXCLUDE;
6662 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6665 /* Allocate memory for the section contents. */
6666 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6667 if (s->contents == NULL)
6671 if (htab->elf.dynamic_sections_created)
6673 /* Add some entries to the .dynamic section. We fill in the
6674 values later, in ppc_elf_finish_dynamic_sections, but we
6675 must add the entries now so that we get the correct size for
6676 the .dynamic section. The DT_DEBUG entry is filled in by the
6677 dynamic linker and used by the debugger. */
6678 #define add_dynamic_entry(TAG, VAL) \
6679 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6681 if (bfd_link_executable (info))
6683 if (!add_dynamic_entry (DT_DEBUG, 0))
6687 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6689 if (!add_dynamic_entry (DT_PLTGOT, 0)
6690 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6691 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6692 || !add_dynamic_entry (DT_JMPREL, 0))
6696 if (htab->plt_type == PLT_NEW
6697 && htab->glink != NULL
6698 && htab->glink->size != 0)
6700 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6702 if (!htab->params->no_tls_get_addr_opt
6703 && htab->tls_get_addr != NULL
6704 && htab->tls_get_addr->plt.plist != NULL
6705 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6711 if (!add_dynamic_entry (DT_RELA, 0)
6712 || !add_dynamic_entry (DT_RELASZ, 0)
6713 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6717 /* If any dynamic relocs apply to a read-only section, then we
6718 need a DT_TEXTREL entry. */
6719 if ((info->flags & DF_TEXTREL) == 0)
6720 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6723 if ((info->flags & DF_TEXTREL) != 0)
6725 if (!add_dynamic_entry (DT_TEXTREL, 0))
6728 if (htab->is_vxworks
6729 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6732 #undef add_dynamic_entry
6734 if (htab->glink_eh_frame != NULL
6735 && htab->glink_eh_frame->contents != NULL)
6737 unsigned char *p = htab->glink_eh_frame->contents;
6740 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6741 /* CIE length (rewrite in case little-endian). */
6742 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6743 p += sizeof (glink_eh_frame_cie);
6745 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6746 bfd_put_32 (htab->elf.dynobj, val, p);
6749 val = p - htab->glink_eh_frame->contents;
6750 bfd_put_32 (htab->elf.dynobj, val, p);
6752 /* Offset to .glink. Set later. */
6755 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6760 if (bfd_link_pic (info)
6761 && htab->elf.dynamic_sections_created)
6763 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6765 *p++ = DW_CFA_advance_loc + adv;
6768 *p++ = DW_CFA_advance_loc1;
6771 else if (adv < 65536)
6773 *p++ = DW_CFA_advance_loc2;
6774 bfd_put_16 (htab->elf.dynobj, adv, p);
6779 *p++ = DW_CFA_advance_loc4;
6780 bfd_put_32 (htab->elf.dynobj, adv, p);
6783 *p++ = DW_CFA_register;
6786 *p++ = DW_CFA_advance_loc + 4;
6787 *p++ = DW_CFA_restore_extended;
6790 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6791 == htab->glink_eh_frame->size);
6797 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6798 if it looks like nothing is using them. */
6801 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6803 struct elf_link_hash_entry *sda = lsect->sym;
6805 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6809 s = bfd_get_section_by_name (output_bfd, lsect->name);
6810 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6812 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6813 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6815 sda->def_regular = 0;
6816 /* This is somewhat magic. See elf_link_output_extsym. */
6817 sda->ref_dynamic = 1;
6818 sda->forced_local = 0;
6825 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6827 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6831 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6832 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6837 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6840 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6842 if (h->plt.plist != NULL
6844 && (!h->pointer_equality_needed
6845 || !h->ref_regular_nonweak))
6848 return _bfd_elf_hash_symbol (h);
6851 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6853 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6854 used for some functions that are allowed to break the ABI). */
6855 static const int shared_stub_entry[] =
6857 0x7c0802a6, /* mflr 0 */
6858 0x429f0005, /* bcl 20, 31, .Lxxx */
6859 0x7d8802a6, /* mflr 12 */
6860 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6861 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6862 0x7c0803a6, /* mtlr 0 */
6863 0x7d8903a6, /* mtctr 12 */
6864 0x4e800420, /* bctr */
6867 static const int stub_entry[] =
6869 0x3d800000, /* lis 12,xxx@ha */
6870 0x398c0000, /* addi 12,12,xxx@l */
6871 0x7d8903a6, /* mtctr 12 */
6872 0x4e800420, /* bctr */
6875 struct ppc_elf_relax_info
6877 unsigned int workaround_size;
6878 unsigned int picfixup_size;
6881 /* This function implements long branch trampolines, and the ppc476
6882 icache bug workaround. Any section needing trampolines or patch
6883 space for the workaround has its size extended so that we can
6884 add trampolines at the end of the section. */
6887 ppc_elf_relax_section (bfd *abfd,
6889 struct bfd_link_info *link_info,
6892 struct one_branch_fixup
6894 struct one_branch_fixup *next;
6896 /* Final link, can use the symbol offset. For a
6897 relocatable link we use the symbol's index. */
6902 Elf_Internal_Shdr *symtab_hdr;
6903 bfd_byte *contents = NULL;
6904 Elf_Internal_Sym *isymbuf = NULL;
6905 Elf_Internal_Rela *internal_relocs = NULL;
6906 Elf_Internal_Rela *irel, *irelend = NULL;
6907 struct one_branch_fixup *branch_fixups = NULL;
6908 struct ppc_elf_relax_info *relax_info = NULL;
6909 unsigned changes = 0;
6910 bfd_boolean workaround_change;
6911 struct ppc_elf_link_hash_table *htab;
6912 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6914 bfd_boolean maybe_pasted;
6918 /* No need to do anything with non-alloc or non-code sections. */
6919 if ((isec->flags & SEC_ALLOC) == 0
6920 || (isec->flags & SEC_CODE) == 0
6921 || (isec->flags & SEC_LINKER_CREATED) != 0
6925 /* We cannot represent the required PIC relocs in the output, so don't
6926 do anything. The linker doesn't support mixing -shared and -r
6928 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6931 htab = ppc_elf_hash_table (link_info);
6935 isec->size = (isec->size + 3) & -4;
6936 if (isec->rawsize == 0)
6937 isec->rawsize = isec->size;
6938 trampbase = isec->size;
6940 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6941 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6942 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6944 if (htab->params->ppc476_workaround
6945 || htab->params->pic_fixup > 0)
6947 if (elf_section_data (isec)->sec_info == NULL)
6949 elf_section_data (isec)->sec_info
6950 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6951 if (elf_section_data (isec)->sec_info == NULL)
6954 relax_info = elf_section_data (isec)->sec_info;
6955 trampbase -= relax_info->workaround_size;
6958 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6959 || strcmp (isec->output_section->name, ".fini") == 0);
6960 /* Space for a branch around any trampolines. */
6961 trampoff = trampbase;
6962 if (maybe_pasted && trampbase == isec->rawsize)
6965 symtab_hdr = &elf_symtab_hdr (abfd);
6967 if (htab->params->branch_trampolines
6968 || htab->params->pic_fixup > 0)
6970 /* Get a copy of the native relocations. */
6971 if (isec->reloc_count != 0)
6973 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6974 link_info->keep_memory);
6975 if (internal_relocs == NULL)
6979 got2 = bfd_get_section_by_name (abfd, ".got2");
6981 irelend = internal_relocs + isec->reloc_count;
6982 for (irel = internal_relocs; irel < irelend; irel++)
6984 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6987 struct one_branch_fixup *f;
6988 size_t insn_offset = 0;
6989 bfd_vma max_branch_offset = 0, val;
6992 struct elf_link_hash_entry *h;
6993 struct plt_entry **plist;
6994 unsigned char sym_type;
6999 case R_PPC_LOCAL24PC:
7000 case R_PPC_PLTREL24:
7001 max_branch_offset = 1 << 25;
7005 case R_PPC_REL14_BRTAKEN:
7006 case R_PPC_REL14_BRNTAKEN:
7007 max_branch_offset = 1 << 15;
7010 case R_PPC_ADDR16_HA:
7011 if (htab->params->pic_fixup > 0)
7019 /* Get the value of the symbol referred to by the reloc. */
7021 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7023 /* A local symbol. */
7024 Elf_Internal_Sym *isym;
7026 /* Read this BFD's local symbols. */
7027 if (isymbuf == NULL)
7029 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7030 if (isymbuf == NULL)
7031 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7032 symtab_hdr->sh_info, 0,
7037 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7038 if (isym->st_shndx == SHN_UNDEF)
7039 tsec = bfd_und_section_ptr;
7040 else if (isym->st_shndx == SHN_ABS)
7041 tsec = bfd_abs_section_ptr;
7042 else if (isym->st_shndx == SHN_COMMON)
7043 tsec = bfd_com_section_ptr;
7045 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7047 toff = isym->st_value;
7048 sym_type = ELF_ST_TYPE (isym->st_info);
7052 /* Global symbol handling. */
7055 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7056 h = elf_sym_hashes (abfd)[indx];
7058 while (h->root.type == bfd_link_hash_indirect
7059 || h->root.type == bfd_link_hash_warning)
7060 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7062 if (h->root.type == bfd_link_hash_defined
7063 || h->root.type == bfd_link_hash_defweak)
7065 tsec = h->root.u.def.section;
7066 toff = h->root.u.def.value;
7068 else if (h->root.type == bfd_link_hash_undefined
7069 || h->root.type == bfd_link_hash_undefweak)
7071 tsec = bfd_und_section_ptr;
7072 toff = bfd_link_relocatable (link_info) ? indx : 0;
7077 /* If this branch is to __tls_get_addr then we may later
7078 optimise away the call. We won't be needing a long-
7079 branch stub in that case. */
7080 if (bfd_link_executable (link_info)
7081 && h == htab->tls_get_addr
7082 && irel != internal_relocs)
7084 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7085 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7086 unsigned int tls_mask = 0;
7088 /* The previous reloc should be one of R_PPC_TLSGD or
7089 R_PPC_TLSLD, or for older object files, a reloc
7090 on the __tls_get_addr arg setup insn. Get tls
7091 mask bits from the symbol on that reloc. */
7092 if (t_symndx < symtab_hdr->sh_info)
7094 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7096 if (local_got_offsets != NULL)
7098 struct plt_entry **local_plt = (struct plt_entry **)
7099 (local_got_offsets + symtab_hdr->sh_info);
7100 char *lgot_masks = (char *)
7101 (local_plt + symtab_hdr->sh_info);
7102 tls_mask = lgot_masks[t_symndx];
7107 struct elf_link_hash_entry *th
7108 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7110 while (th->root.type == bfd_link_hash_indirect
7111 || th->root.type == bfd_link_hash_warning)
7112 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7115 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7118 /* The mask bits tell us if the call will be
7120 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7121 && (t_rtype == R_PPC_TLSGD
7122 || t_rtype == R_PPC_GOT_TLSGD16
7123 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7125 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7126 && (t_rtype == R_PPC_TLSLD
7127 || t_rtype == R_PPC_GOT_TLSLD16
7128 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7135 if (r_type == R_PPC_ADDR16_HA)
7140 && ppc_elf_hash_entry (h)->has_addr16_ha
7141 && ppc_elf_hash_entry (h)->has_addr16_lo)
7142 picfixup_size += 12;
7146 /* The condition here under which we call find_plt_ent must
7147 match that in relocate_section. If we call find_plt_ent here
7148 but not in relocate_section, or vice versa, then the branch
7149 destination used here may be incorrect. */
7153 /* We know is_branch_reloc (r_type) is true. */
7154 if (h->type == STT_GNU_IFUNC
7155 || r_type == R_PPC_PLTREL24)
7156 plist = &h->plt.plist;
7158 else if (sym_type == STT_GNU_IFUNC
7159 && elf_local_got_offsets (abfd) != NULL)
7161 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7162 struct plt_entry **local_plt = (struct plt_entry **)
7163 (local_got_offsets + symtab_hdr->sh_info);
7164 plist = local_plt + ELF32_R_SYM (irel->r_info);
7169 struct plt_entry *ent;
7171 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7172 addend = irel->r_addend;
7173 ent = find_plt_ent (plist, got2, addend);
7176 if (htab->plt_type == PLT_NEW
7178 || !htab->elf.dynamic_sections_created
7179 || h->dynindx == -1)
7182 toff = ent->glink_offset;
7186 tsec = htab->elf.splt;
7187 toff = ent->plt.offset;
7192 /* If the branch and target are in the same section, you have
7193 no hope of adding stubs. We'll error out later should the
7198 /* There probably isn't any reason to handle symbols in
7199 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7200 attribute for a code section, and we are only looking at
7201 branches. However, implement it correctly here as a
7202 reference for other target relax_section functions. */
7203 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7205 /* At this stage in linking, no SEC_MERGE symbol has been
7206 adjusted, so all references to such symbols need to be
7207 passed through _bfd_merged_section_offset. (Later, in
7208 relocate_section, all SEC_MERGE symbols *except* for
7209 section symbols have been adjusted.)
7211 gas may reduce relocations against symbols in SEC_MERGE
7212 sections to a relocation against the section symbol when
7213 the original addend was zero. When the reloc is against
7214 a section symbol we should include the addend in the
7215 offset passed to _bfd_merged_section_offset, since the
7216 location of interest is the original symbol. On the
7217 other hand, an access to "sym+addend" where "sym" is not
7218 a section symbol should not include the addend; Such an
7219 access is presumed to be an offset from "sym"; The
7220 location of interest is just "sym". */
7221 if (sym_type == STT_SECTION)
7222 toff += irel->r_addend;
7225 = _bfd_merged_section_offset (abfd, &tsec,
7226 elf_section_data (tsec)->sec_info,
7229 if (sym_type != STT_SECTION)
7230 toff += irel->r_addend;
7232 /* PLTREL24 addends are special. */
7233 else if (r_type != R_PPC_PLTREL24)
7234 toff += irel->r_addend;
7236 /* Attempted -shared link of non-pic code loses. */
7237 if ((!bfd_link_relocatable (link_info)
7238 && tsec == bfd_und_section_ptr)
7239 || tsec->output_section == NULL
7240 || (tsec->owner != NULL
7241 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7244 roff = irel->r_offset;
7246 /* If the branch is in range, no need to do anything. */
7247 if (tsec != bfd_und_section_ptr
7248 && (!bfd_link_relocatable (link_info)
7249 /* A relocatable link may have sections moved during
7250 final link, so do not presume they remain in range. */
7251 || tsec->output_section == isec->output_section))
7253 bfd_vma symaddr, reladdr;
7255 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7256 reladdr = isec->output_section->vma + isec->output_offset + roff;
7257 if (symaddr - reladdr + max_branch_offset
7258 < 2 * max_branch_offset)
7262 /* Look for an existing fixup to this address. */
7263 for (f = branch_fixups; f ; f = f->next)
7264 if (f->tsec == tsec && f->toff == toff)
7270 unsigned long stub_rtype;
7272 val = trampoff - roff;
7273 if (val >= max_branch_offset)
7274 /* Oh dear, we can't reach a trampoline. Don't try to add
7275 one. We'll report an error later. */
7278 if (bfd_link_pic (link_info))
7280 size = 4 * ARRAY_SIZE (shared_stub_entry);
7285 size = 4 * ARRAY_SIZE (stub_entry);
7288 stub_rtype = R_PPC_RELAX;
7289 if (tsec == htab->elf.splt
7290 || tsec == htab->glink)
7292 stub_rtype = R_PPC_RELAX_PLT;
7293 if (r_type == R_PPC_PLTREL24)
7294 stub_rtype = R_PPC_RELAX_PLTREL24;
7297 /* Hijack the old relocation. Since we need two
7298 relocations for this use a "composite" reloc. */
7299 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7301 irel->r_offset = trampoff + insn_offset;
7302 if (r_type == R_PPC_PLTREL24
7303 && stub_rtype != R_PPC_RELAX_PLTREL24)
7306 /* Record the fixup so we don't do it again this section. */
7307 f = bfd_malloc (sizeof (*f));
7308 f->next = branch_fixups;
7311 f->trampoff = trampoff;
7319 val = f->trampoff - roff;
7320 if (val >= max_branch_offset)
7323 /* Nop out the reloc, since we're finalizing things here. */
7324 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7327 /* Get the section contents. */
7328 if (contents == NULL)
7330 /* Get cached copy if it exists. */
7331 if (elf_section_data (isec)->this_hdr.contents != NULL)
7332 contents = elf_section_data (isec)->this_hdr.contents;
7333 /* Go get them off disk. */
7334 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7338 /* Fix up the existing branch to hit the trampoline. */
7339 hit_addr = contents + roff;
7343 case R_PPC_LOCAL24PC:
7344 case R_PPC_PLTREL24:
7345 t0 = bfd_get_32 (abfd, hit_addr);
7347 t0 |= val & 0x3fffffc;
7348 bfd_put_32 (abfd, t0, hit_addr);
7352 case R_PPC_REL14_BRTAKEN:
7353 case R_PPC_REL14_BRNTAKEN:
7354 t0 = bfd_get_32 (abfd, hit_addr);
7357 bfd_put_32 (abfd, t0, hit_addr);
7362 while (branch_fixups != NULL)
7364 struct one_branch_fixup *f = branch_fixups;
7365 branch_fixups = branch_fixups->next;
7370 workaround_change = FALSE;
7372 if (htab->params->ppc476_workaround
7373 && (!bfd_link_relocatable (link_info)
7374 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7376 bfd_vma addr, end_addr;
7377 unsigned int crossings;
7378 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7380 addr = isec->output_section->vma + isec->output_offset;
7381 end_addr = addr + trampoff;
7383 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7386 /* Keep space aligned, to ensure the patch code itself does
7387 not cross a page. Don't decrease size calculated on a
7388 previous pass as otherwise we might never settle on a layout. */
7389 newsize = 15 - ((end_addr - 1) & 15);
7390 newsize += crossings * 16;
7391 if (relax_info->workaround_size < newsize)
7393 relax_info->workaround_size = newsize;
7394 workaround_change = TRUE;
7396 /* Ensure relocate_section is called. */
7397 isec->flags |= SEC_RELOC;
7399 newsize = trampoff + relax_info->workaround_size;
7402 if (htab->params->pic_fixup > 0)
7404 picfixup_size -= relax_info->picfixup_size;
7405 if (picfixup_size != 0)
7406 relax_info->picfixup_size += picfixup_size;
7407 newsize += relax_info->picfixup_size;
7410 if (changes != 0 || picfixup_size != 0 || workaround_change)
7411 isec->size = newsize;
7414 && symtab_hdr->contents != (unsigned char *) isymbuf)
7416 if (! link_info->keep_memory)
7420 /* Cache the symbols for elf_link_input_bfd. */
7421 symtab_hdr->contents = (unsigned char *) isymbuf;
7425 if (contents != NULL
7426 && elf_section_data (isec)->this_hdr.contents != contents)
7428 if (!changes && !link_info->keep_memory)
7432 /* Cache the section contents for elf_link_input_bfd. */
7433 elf_section_data (isec)->this_hdr.contents = contents;
7437 changes += picfixup_size;
7440 /* Append sufficient NOP relocs so we can write out relocation
7441 information for the trampolines. */
7442 Elf_Internal_Shdr *rel_hdr;
7443 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7444 * sizeof (*new_relocs));
7449 memcpy (new_relocs, internal_relocs,
7450 isec->reloc_count * sizeof (*new_relocs));
7451 for (ix = changes; ix--;)
7453 irel = new_relocs + ix + isec->reloc_count;
7455 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7457 if (internal_relocs != elf_section_data (isec)->relocs)
7458 free (internal_relocs);
7459 elf_section_data (isec)->relocs = new_relocs;
7460 isec->reloc_count += changes;
7461 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7462 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7464 else if (internal_relocs != NULL
7465 && elf_section_data (isec)->relocs != internal_relocs)
7466 free (internal_relocs);
7468 *again = changes != 0 || workaround_change;
7472 while (branch_fixups != NULL)
7474 struct one_branch_fixup *f = branch_fixups;
7475 branch_fixups = branch_fixups->next;
7478 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7480 if (contents != NULL
7481 && elf_section_data (isec)->this_hdr.contents != contents)
7483 if (internal_relocs != NULL
7484 && elf_section_data (isec)->relocs != internal_relocs)
7485 free (internal_relocs);
7489 /* What to do when ld finds relocations against symbols defined in
7490 discarded sections. */
7493 ppc_elf_action_discarded (asection *sec)
7495 if (strcmp (".fixup", sec->name) == 0)
7498 if (strcmp (".got2", sec->name) == 0)
7501 return _bfd_elf_default_action_discarded (sec);
7504 /* Fill in the address for a pointer generated in a linker section. */
7507 elf_finish_pointer_linker_section (bfd *input_bfd,
7508 elf_linker_section_t *lsect,
7509 struct elf_link_hash_entry *h,
7511 const Elf_Internal_Rela *rel)
7513 elf_linker_section_pointers_t *linker_section_ptr;
7515 BFD_ASSERT (lsect != NULL);
7519 /* Handle global symbol. */
7520 struct ppc_elf_link_hash_entry *eh;
7522 eh = (struct ppc_elf_link_hash_entry *) h;
7523 BFD_ASSERT (eh->elf.def_regular);
7524 linker_section_ptr = eh->linker_section_pointer;
7528 /* Handle local symbol. */
7529 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7531 BFD_ASSERT (is_ppc_elf (input_bfd));
7532 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7533 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7536 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7539 BFD_ASSERT (linker_section_ptr != NULL);
7541 /* Offset will always be a multiple of four, so use the bottom bit
7542 as a "written" flag. */
7543 if ((linker_section_ptr->offset & 1) == 0)
7545 bfd_put_32 (lsect->section->owner,
7546 relocation + linker_section_ptr->addend,
7547 lsect->section->contents + linker_section_ptr->offset);
7548 linker_section_ptr->offset += 1;
7551 relocation = (lsect->section->output_section->vma
7552 + lsect->section->output_offset
7553 + linker_section_ptr->offset - 1
7554 - SYM_VAL (lsect->sym));
7558 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7559 lsect->name, (long) relocation, (long) relocation);
7565 #define PPC_LO(v) ((v) & 0xffff)
7566 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7567 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7570 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7571 struct bfd_link_info *info)
7573 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7574 bfd *output_bfd = info->output_bfd;
7577 plt = ((ent->plt.offset & ~1)
7578 + plt_sec->output_section->vma
7579 + plt_sec->output_offset);
7581 if (bfd_link_pic (info))
7585 if (ent->addend >= 32768)
7587 + ent->sec->output_section->vma
7588 + ent->sec->output_offset);
7589 else if (htab->elf.hgot != NULL)
7590 got = SYM_VAL (htab->elf.hgot);
7594 if (plt + 0x8000 < 0x10000)
7596 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7598 bfd_put_32 (output_bfd, MTCTR_11, p);
7600 bfd_put_32 (output_bfd, BCTR, p);
7602 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7607 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7609 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7611 bfd_put_32 (output_bfd, MTCTR_11, p);
7613 bfd_put_32 (output_bfd, BCTR, p);
7619 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7621 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7623 bfd_put_32 (output_bfd, MTCTR_11, p);
7625 bfd_put_32 (output_bfd, BCTR, p);
7630 /* Return true if symbol is defined statically. */
7633 is_static_defined (struct elf_link_hash_entry *h)
7635 return ((h->root.type == bfd_link_hash_defined
7636 || h->root.type == bfd_link_hash_defweak)
7637 && h->root.u.def.section != NULL
7638 && h->root.u.def.section->output_section != NULL);
7641 /* If INSN is an opcode that may be used with an @tls operand, return
7642 the transformed insn for TLS optimisation, otherwise return 0. If
7643 REG is non-zero only match an insn with RB or RA equal to REG. */
7646 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7650 if ((insn & (0x3f << 26)) != 31 << 26)
7653 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7654 rtra = insn & ((1 << 26) - (1 << 16));
7655 else if (((insn >> 16) & 0x1f) == reg)
7656 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7660 if ((insn & (0x3ff << 1)) == 266 << 1)
7663 else if ((insn & (0x1f << 1)) == 23 << 1
7664 && ((insn & (0x1f << 6)) < 14 << 6
7665 || ((insn & (0x1f << 6)) >= 16 << 6
7666 && (insn & (0x1f << 6)) < 24 << 6)))
7667 /* load and store indexed -> dform. */
7668 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7669 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7670 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7671 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7672 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7674 insn = (58 << 26) | 2;
7681 /* If INSN is an opcode that may be used with an @tprel operand, return
7682 the transformed insn for an undefined weak symbol, ie. with the
7683 thread pointer REG operand removed. Otherwise return 0. */
7686 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7688 if ((insn & (0x1f << 16)) == reg << 16
7689 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7690 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7691 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7692 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7693 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7694 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7695 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7696 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7697 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7698 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7699 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7700 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7701 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7702 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7703 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7704 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7706 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7707 && ((insn & 3) == 0 || (insn & 3) == 3))))
7709 insn &= ~(0x1f << 16);
7711 else if ((insn & (0x1f << 21)) == reg << 21
7712 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7713 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7714 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7716 insn &= ~(0x1f << 21);
7717 insn |= (insn & (0x1f << 16)) << 5;
7718 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7719 insn -= 2 >> 26; /* convert to ori,oris */
7727 is_insn_ds_form (unsigned int insn)
7729 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7730 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7731 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7732 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7736 is_insn_dq_form (unsigned int insn)
7738 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7739 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7740 && (insn & 3) == 1));
7743 /* The RELOCATE_SECTION function is called by the ELF backend linker
7744 to handle the relocations for a section.
7746 The relocs are always passed as Rela structures; if the section
7747 actually uses Rel structures, the r_addend field will always be
7750 This function is responsible for adjust the section contents as
7751 necessary, and (if using Rela relocs and generating a
7752 relocatable output file) adjusting the reloc addend as
7755 This function does not have to worry about setting the reloc
7756 address or the reloc symbol index.
7758 LOCAL_SYMS is a pointer to the swapped in local symbols.
7760 LOCAL_SECTIONS is an array giving the section in the input file
7761 corresponding to the st_shndx field of each local symbol.
7763 The global hash table entry for the global symbols can be found
7764 via elf_sym_hashes (input_bfd).
7766 When generating relocatable output, this function must handle
7767 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7768 going to be the section symbol corresponding to the output
7769 section, which means that the addend must be adjusted
7773 ppc_elf_relocate_section (bfd *output_bfd,
7774 struct bfd_link_info *info,
7776 asection *input_section,
7778 Elf_Internal_Rela *relocs,
7779 Elf_Internal_Sym *local_syms,
7780 asection **local_sections)
7782 Elf_Internal_Shdr *symtab_hdr;
7783 struct elf_link_hash_entry **sym_hashes;
7784 struct ppc_elf_link_hash_table *htab;
7785 Elf_Internal_Rela *rel;
7786 Elf_Internal_Rela *wrel;
7787 Elf_Internal_Rela *relend;
7788 Elf_Internal_Rela outrel;
7790 bfd_vma *local_got_offsets;
7791 bfd_boolean ret = TRUE;
7792 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7793 bfd_boolean is_vxworks_tls;
7794 unsigned int picfixup_size = 0;
7795 struct ppc_elf_relax_info *relax_info = NULL;
7798 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7799 "%ld relocations%s",
7800 input_bfd, input_section,
7801 (long) input_section->reloc_count,
7802 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7805 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7807 /* Initialize howto table if not already done. */
7808 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7809 ppc_elf_howto_init ();
7811 htab = ppc_elf_hash_table (info);
7812 local_got_offsets = elf_local_got_offsets (input_bfd);
7813 symtab_hdr = &elf_symtab_hdr (input_bfd);
7814 sym_hashes = elf_sym_hashes (input_bfd);
7815 /* We have to handle relocations in vxworks .tls_vars sections
7816 specially, because the dynamic loader is 'weird'. */
7817 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7818 && !strcmp (input_section->output_section->name,
7820 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7821 relax_info = elf_section_data (input_section)->sec_info;
7822 rel = wrel = relocs;
7823 relend = relocs + input_section->reloc_count;
7824 for (; rel < relend; wrel++, rel++)
7826 enum elf_ppc_reloc_type r_type;
7828 bfd_reloc_status_type r;
7829 Elf_Internal_Sym *sym;
7831 struct elf_link_hash_entry *h;
7832 const char *sym_name;
7833 reloc_howto_type *howto;
7834 unsigned long r_symndx;
7836 bfd_vma branch_bit, from;
7837 bfd_boolean unresolved_reloc;
7839 unsigned int tls_type, tls_mask, tls_gd;
7840 struct plt_entry **ifunc;
7841 struct reloc_howto_struct alt_howto;
7844 r_type = ELF32_R_TYPE (rel->r_info);
7848 unresolved_reloc = FALSE;
7850 r_symndx = ELF32_R_SYM (rel->r_info);
7852 if (r_symndx < symtab_hdr->sh_info)
7854 sym = local_syms + r_symndx;
7855 sec = local_sections[r_symndx];
7856 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7858 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7862 bfd_boolean ignored;
7864 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7865 r_symndx, symtab_hdr, sym_hashes,
7867 unresolved_reloc, warned, ignored);
7869 sym_name = h->root.root.string;
7872 if (sec != NULL && discarded_section (sec))
7874 /* For relocs against symbols from removed linkonce sections,
7875 or sections discarded by a linker script, we just want the
7876 section contents zeroed. Avoid any special processing. */
7878 if (r_type < R_PPC_max)
7879 howto = ppc_elf_howto_table[r_type];
7881 _bfd_clear_contents (howto, input_bfd, input_section,
7882 contents + rel->r_offset);
7883 wrel->r_offset = rel->r_offset;
7887 /* For ld -r, remove relocations in debug sections against
7888 sections defined in discarded sections. Not done for
7889 non-debug to preserve relocs in .eh_frame which the
7890 eh_frame editing code expects to be present. */
7891 if (bfd_link_relocatable (info)
7892 && (input_section->flags & SEC_DEBUGGING))
7898 if (bfd_link_relocatable (info))
7901 && r_type == R_PPC_PLTREL24
7902 && rel->r_addend != 0)
7904 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7905 addend specifies the GOT pointer offset within .got2. */
7906 rel->r_addend += got2->output_offset;
7908 if (r_type != R_PPC_RELAX_PLT
7909 && r_type != R_PPC_RELAX_PLTREL24
7910 && r_type != R_PPC_RELAX)
7914 /* TLS optimizations. Replace instruction sequences and relocs
7915 based on information we collected in tls_optimize. We edit
7916 RELOCS so that --emit-relocs will output something sensible
7917 for the final instruction stream. */
7921 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7922 else if (local_got_offsets != NULL)
7924 struct plt_entry **local_plt;
7927 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7928 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7929 tls_mask = lgot_masks[r_symndx];
7932 /* Ensure reloc mapping code below stays sane. */
7933 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7934 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7935 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7936 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7937 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7938 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7939 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7940 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7947 case R_PPC_GOT_TPREL16:
7948 case R_PPC_GOT_TPREL16_LO:
7949 if ((tls_mask & TLS_TLS) != 0
7950 && (tls_mask & TLS_TPREL) == 0)
7954 insn = bfd_get_32 (input_bfd,
7955 contents + rel->r_offset - d_offset);
7957 insn |= 0x3c020000; /* addis 0,2,0 */
7958 bfd_put_32 (input_bfd, insn,
7959 contents + rel->r_offset - d_offset);
7960 r_type = R_PPC_TPREL16_HA;
7961 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7966 if ((tls_mask & TLS_TLS) != 0
7967 && (tls_mask & TLS_TPREL) == 0)
7971 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7972 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7975 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7976 r_type = R_PPC_TPREL16_LO;
7977 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7979 /* Was PPC_TLS which sits on insn boundary, now
7980 PPC_TPREL16_LO which is at low-order half-word. */
7981 rel->r_offset += d_offset;
7985 case R_PPC_GOT_TLSGD16_HI:
7986 case R_PPC_GOT_TLSGD16_HA:
7987 tls_gd = TLS_TPRELGD;
7988 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7992 case R_PPC_GOT_TLSLD16_HI:
7993 case R_PPC_GOT_TLSLD16_HA:
7994 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7997 if ((tls_mask & tls_gd) != 0)
7998 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7999 + R_PPC_GOT_TPREL16);
8002 rel->r_offset -= d_offset;
8003 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
8004 r_type = R_PPC_NONE;
8006 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8010 case R_PPC_GOT_TLSGD16:
8011 case R_PPC_GOT_TLSGD16_LO:
8012 tls_gd = TLS_TPRELGD;
8013 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8017 case R_PPC_GOT_TLSLD16:
8018 case R_PPC_GOT_TLSLD16_LO:
8019 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8021 unsigned int insn1, insn2;
8025 offset = (bfd_vma) -1;
8026 /* If not using the newer R_PPC_TLSGD/LD to mark
8027 __tls_get_addr calls, we must trust that the call
8028 stays with its arg setup insns, ie. that the next
8029 reloc is the __tls_get_addr call associated with
8030 the current reloc. Edit both insns. */
8031 if (input_section->has_tls_get_addr_call
8033 && branch_reloc_hash_match (input_bfd, rel + 1,
8034 htab->tls_get_addr))
8035 offset = rel[1].r_offset;
8036 /* We read the low GOT_TLS insn because we need to keep
8037 the destination reg. It may be something other than
8038 the usual r3, and moved to r3 before the call by
8039 intervening code. */
8040 insn1 = bfd_get_32 (input_bfd,
8041 contents + rel->r_offset - d_offset);
8042 if ((tls_mask & tls_gd) != 0)
8045 insn1 &= (0x1f << 21) | (0x1f << 16);
8046 insn1 |= 32 << 26; /* lwz */
8047 if (offset != (bfd_vma) -1)
8049 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8050 insn2 = 0x7c631214; /* add 3,3,2 */
8051 bfd_put_32 (input_bfd, insn2, contents + offset);
8053 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8054 + R_PPC_GOT_TPREL16);
8055 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8060 insn1 &= 0x1f << 21;
8061 insn1 |= 0x3c020000; /* addis r,2,0 */
8064 /* Was an LD reloc. */
8066 r_symndx < symtab_hdr->sh_info;
8068 if (local_sections[r_symndx] == sec)
8070 if (r_symndx >= symtab_hdr->sh_info)
8071 r_symndx = STN_UNDEF;
8072 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8073 if (r_symndx != STN_UNDEF)
8074 rel->r_addend -= (local_syms[r_symndx].st_value
8075 + sec->output_offset
8076 + sec->output_section->vma);
8078 r_type = R_PPC_TPREL16_HA;
8079 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8080 if (offset != (bfd_vma) -1)
8082 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8083 rel[1].r_offset = offset + d_offset;
8084 rel[1].r_addend = rel->r_addend;
8085 insn2 = 0x38630000; /* addi 3,3,0 */
8086 bfd_put_32 (input_bfd, insn2, contents + offset);
8089 bfd_put_32 (input_bfd, insn1,
8090 contents + rel->r_offset - d_offset);
8093 /* We changed the symbol on an LD reloc. Start over
8094 in order to get h, sym, sec etc. right. */
8101 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8104 bfd_vma offset = rel->r_offset;
8106 if ((tls_mask & TLS_TPRELGD) != 0)
8109 r_type = R_PPC_NONE;
8110 insn2 = 0x7c631214; /* add 3,3,2 */
8115 r_type = R_PPC_TPREL16_LO;
8116 rel->r_offset += d_offset;
8117 insn2 = 0x38630000; /* addi 3,3,0 */
8119 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8120 bfd_put_32 (input_bfd, insn2, contents + offset);
8121 /* Zap the reloc on the _tls_get_addr call too. */
8122 BFD_ASSERT (offset == rel[1].r_offset);
8123 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8128 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8133 r_symndx < symtab_hdr->sh_info;
8135 if (local_sections[r_symndx] == sec)
8137 if (r_symndx >= symtab_hdr->sh_info)
8138 r_symndx = STN_UNDEF;
8139 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8140 if (r_symndx != STN_UNDEF)
8141 rel->r_addend -= (local_syms[r_symndx].st_value
8142 + sec->output_offset
8143 + sec->output_section->vma);
8145 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8146 rel->r_offset += d_offset;
8147 insn2 = 0x38630000; /* addi 3,3,0 */
8148 bfd_put_32 (input_bfd, insn2,
8149 contents + rel->r_offset - d_offset);
8150 /* Zap the reloc on the _tls_get_addr call too. */
8151 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8152 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8158 /* Handle other relocations that tweak non-addend part of insn. */
8165 /* Branch taken prediction relocations. */
8166 case R_PPC_ADDR14_BRTAKEN:
8167 case R_PPC_REL14_BRTAKEN:
8168 branch_bit = BRANCH_PREDICT_BIT;
8171 /* Branch not taken prediction relocations. */
8172 case R_PPC_ADDR14_BRNTAKEN:
8173 case R_PPC_REL14_BRNTAKEN:
8177 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8178 insn &= ~BRANCH_PREDICT_BIT;
8181 from = (rel->r_offset
8182 + input_section->output_offset
8183 + input_section->output_section->vma);
8185 /* Invert 'y' bit if not the default. */
8186 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8187 insn ^= BRANCH_PREDICT_BIT;
8189 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8194 if (ELIMINATE_COPY_RELOCS
8198 && ppc_elf_hash_entry (h)->has_addr16_ha
8199 && ppc_elf_hash_entry (h)->has_addr16_lo
8200 && htab->params->pic_fixup > 0)
8202 /* Convert lis;addi or lis;load/store accessing a protected
8203 variable defined in a shared library to PIC. */
8206 if (r_type == R_PPC_ADDR16_HA)
8208 insn = bfd_get_32 (input_bfd,
8209 contents + rel->r_offset - d_offset);
8210 if ((insn & (0x3f << 26)) == (15u << 26)
8211 && (insn & (0x1f << 16)) == 0 /* lis */)
8217 p = (contents + input_section->size
8218 - relax_info->workaround_size
8219 - relax_info->picfixup_size
8221 off = (p - contents) - (rel->r_offset - d_offset);
8222 if (off > 0x1fffffc || (off & 3) != 0)
8223 info->callbacks->einfo
8224 (_("%H: fixup branch overflow\n"),
8225 input_bfd, input_section, rel->r_offset);
8227 bfd_put_32 (input_bfd, B | off,
8228 contents + rel->r_offset - d_offset);
8229 got_addr = (htab->elf.sgot->output_section->vma
8230 + htab->elf.sgot->output_offset
8231 + (h->got.offset & ~1));
8232 wrel->r_offset = (p - contents) + d_offset;
8233 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8234 wrel->r_addend = got_addr;
8236 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8237 bfd_put_32 (input_bfd, insn, p);
8239 /* Convert lis to lwz, loading address from GOT. */
8241 insn ^= (32u ^ 15u) << 26;
8242 insn |= (insn & (0x1f << 21)) >> 5;
8243 insn |= got_addr & 0xffff;
8244 bfd_put_32 (input_bfd, insn, p + 4);
8246 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8247 picfixup_size += 12;
8249 /* Use one of the spare relocs, so --emit-relocs
8250 output is reasonable. */
8251 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8253 rel->r_offset = wrel[-1].r_offset + 4;
8254 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8255 rel->r_addend = wrel[-1].r_addend;
8257 /* Continue on as if we had a got reloc, to output
8259 r_type = R_PPC_GOT16_LO;
8262 info->callbacks->einfo
8263 /* xgettext:c-format */
8264 (_("%H: error: %s with unexpected instruction %x\n"),
8265 input_bfd, input_section, rel->r_offset,
8266 "R_PPC_ADDR16_HA", insn);
8268 else if (r_type == R_PPC_ADDR16_LO)
8270 insn = bfd_get_32 (input_bfd,
8271 contents + rel->r_offset - d_offset);
8272 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8273 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8274 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8275 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8276 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8277 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8278 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8279 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8280 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8281 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8282 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8283 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8284 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8285 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8286 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8288 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8289 && ((insn & 3) == 0 || (insn & 3) == 3)))
8291 /* Arrange to apply the reloc addend, if any. */
8293 unresolved_reloc = FALSE;
8294 rel->r_info = ELF32_R_INFO (0, r_type);
8297 info->callbacks->einfo
8298 /* xgettext:c-format */
8299 (_("%H: error: %s with unexpected instruction %x\n"),
8300 input_bfd, input_section, rel->r_offset,
8301 "R_PPC_ADDR16_LO", insn);
8306 if (!htab->is_vxworks)
8308 struct plt_entry *ent;
8312 if (h->type == STT_GNU_IFUNC)
8313 ifunc = &h->plt.plist;
8315 else if (local_got_offsets != NULL
8316 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8318 struct plt_entry **local_plt;
8320 local_plt = (struct plt_entry **) (local_got_offsets
8321 + symtab_hdr->sh_info);
8322 ifunc = local_plt + r_symndx;
8327 && (!bfd_link_pic (info)
8328 || is_branch_reloc (r_type)))
8331 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8332 addend = rel->r_addend;
8333 ent = find_plt_ent (ifunc, got2, addend);
8337 if (bfd_link_pic (info)
8339 && htab->plt_type != PLT_NEW
8340 && (!htab->elf.dynamic_sections_created
8342 || h->dynindx == -1))
8344 /* Uh oh, we are going to create a pic glink stub
8345 for an ifunc (here for h == NULL and later in
8346 finish_dynamic_symbol for h != NULL), and
8347 apparently are using code compiled with
8348 -mbss-plt. The difficulty is that -mbss-plt code
8349 gives no indication via a magic PLTREL24 addend
8350 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8351 is pointing into a .got2 section (and how far
8353 info->callbacks->einfo
8354 /* xgettext:c-format */
8355 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8356 input_bfd, input_section, rel->r_offset, sym_name);
8358 if (h == NULL && (ent->plt.offset & 1) == 0)
8360 Elf_Internal_Rela rela;
8363 rela.r_offset = (htab->elf.iplt->output_section->vma
8364 + htab->elf.iplt->output_offset
8366 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8367 rela.r_addend = relocation;
8368 loc = htab->elf.irelplt->contents;
8369 loc += (htab->elf.irelplt->reloc_count++
8370 * sizeof (Elf32_External_Rela));
8371 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8373 ent->plt.offset |= 1;
8375 if (h == NULL && (ent->glink_offset & 1) == 0)
8377 unsigned char *p = ((unsigned char *) htab->glink->contents
8378 + ent->glink_offset);
8379 write_glink_stub (ent, htab->elf.iplt, p, info);
8380 ent->glink_offset |= 1;
8383 unresolved_reloc = FALSE;
8384 if (htab->plt_type == PLT_NEW
8385 || !htab->elf.dynamic_sections_created
8387 || h->dynindx == -1)
8388 relocation = (htab->glink->output_section->vma
8389 + htab->glink->output_offset
8390 + (ent->glink_offset & ~1));
8392 relocation = (htab->elf.splt->output_section->vma
8393 + htab->elf.splt->output_offset
8398 addend = rel->r_addend;
8401 if (r_type < R_PPC_max)
8402 howto = ppc_elf_howto_table[r_type];
8406 info->callbacks->einfo
8407 /* xgettext:c-format */
8408 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8409 input_bfd, (int) r_type, sym_name);
8411 bfd_set_error (bfd_error_bad_value);
8419 case R_PPC_EMB_MRKREF:
8420 case R_PPC_GNU_VTINHERIT:
8421 case R_PPC_GNU_VTENTRY:
8424 /* GOT16 relocations. Like an ADDR16 using the symbol's
8425 address in the GOT as relocation value instead of the
8426 symbol's value itself. Also, create a GOT entry for the
8427 symbol and put the symbol value there. */
8428 case R_PPC_GOT_TLSGD16:
8429 case R_PPC_GOT_TLSGD16_LO:
8430 case R_PPC_GOT_TLSGD16_HI:
8431 case R_PPC_GOT_TLSGD16_HA:
8432 tls_type = TLS_TLS | TLS_GD;
8435 case R_PPC_GOT_TLSLD16:
8436 case R_PPC_GOT_TLSLD16_LO:
8437 case R_PPC_GOT_TLSLD16_HI:
8438 case R_PPC_GOT_TLSLD16_HA:
8439 tls_type = TLS_TLS | TLS_LD;
8442 case R_PPC_GOT_TPREL16:
8443 case R_PPC_GOT_TPREL16_LO:
8444 case R_PPC_GOT_TPREL16_HI:
8445 case R_PPC_GOT_TPREL16_HA:
8446 tls_type = TLS_TLS | TLS_TPREL;
8449 case R_PPC_GOT_DTPREL16:
8450 case R_PPC_GOT_DTPREL16_LO:
8451 case R_PPC_GOT_DTPREL16_HI:
8452 case R_PPC_GOT_DTPREL16_HA:
8453 tls_type = TLS_TLS | TLS_DTPREL;
8457 case R_PPC_GOT16_LO:
8458 case R_PPC_GOT16_HI:
8459 case R_PPC_GOT16_HA:
8463 /* Relocation is to the entry for this symbol in the global
8469 if (htab->elf.sgot == NULL)
8473 if (tls_type == (TLS_TLS | TLS_LD)
8475 || !h->def_dynamic))
8476 offp = &htab->tlsld_got.offset;
8479 if (!htab->elf.dynamic_sections_created
8481 || SYMBOL_REFERENCES_LOCAL (info, h)
8482 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8483 && h->root.type == bfd_link_hash_undefweak))
8484 /* This is actually a static link, or it is a
8485 -Bsymbolic link and the symbol is defined
8486 locally, or the symbol was forced to be local
8487 because of a version file. */
8492 unresolved_reloc = FALSE;
8494 offp = &h->got.offset;
8498 if (local_got_offsets == NULL)
8500 offp = &local_got_offsets[r_symndx];
8503 /* The offset must always be a multiple of 4. We use the
8504 least significant bit to record whether we have already
8505 processed this entry. */
8511 unsigned int tls_m = (tls_mask
8512 & (TLS_LD | TLS_GD | TLS_DTPREL
8513 | TLS_TPREL | TLS_TPRELGD));
8515 if (offp == &htab->tlsld_got.offset)
8521 /* We might have multiple got entries for this sym.
8522 Initialize them all. */
8527 if ((tls_m & TLS_LD) != 0)
8529 tls_ty = TLS_TLS | TLS_LD;
8532 else if ((tls_m & TLS_GD) != 0)
8534 tls_ty = TLS_TLS | TLS_GD;
8537 else if ((tls_m & TLS_DTPREL) != 0)
8539 tls_ty = TLS_TLS | TLS_DTPREL;
8540 tls_m &= ~TLS_DTPREL;
8542 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8544 tls_ty = TLS_TLS | TLS_TPREL;
8548 /* Generate relocs for the dynamic linker. */
8550 || (bfd_link_pic (info)
8552 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8553 || h->root.type != bfd_link_hash_undefweak
8554 || offp == &htab->tlsld_got.offset)))
8556 asection *rsec = htab->elf.srelgot;
8560 rsec = htab->elf.irelplt;
8561 outrel.r_offset = (htab->elf.sgot->output_section->vma
8562 + htab->elf.sgot->output_offset
8564 outrel.r_addend = 0;
8565 if (tls_ty & (TLS_LD | TLS_GD))
8567 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8568 if (tls_ty == (TLS_TLS | TLS_GD))
8570 loc = rsec->contents;
8571 loc += (rsec->reloc_count++
8572 * sizeof (Elf32_External_Rela));
8573 bfd_elf32_swap_reloca_out (output_bfd,
8575 outrel.r_offset += 4;
8577 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8580 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8581 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8582 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8583 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8585 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8586 else if (ifunc != NULL)
8587 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8589 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8590 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8592 outrel.r_addend += relocation;
8593 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8595 if (htab->elf.tls_sec == NULL)
8596 outrel.r_addend = 0;
8598 outrel.r_addend -= htab->elf.tls_sec->vma;
8601 loc = rsec->contents;
8602 loc += (rsec->reloc_count++
8603 * sizeof (Elf32_External_Rela));
8604 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8607 /* Init the .got section contents if we're not
8608 emitting a reloc. */
8611 bfd_vma value = relocation;
8612 int tlsopt = (htab->plt_type == PLT_NEW
8613 && !htab->params->no_tls_get_addr_opt
8614 && htab->tls_get_addr != NULL
8615 && htab->tls_get_addr->plt.plist != NULL);
8619 if (htab->elf.tls_sec == NULL)
8623 if (tls_ty & TLS_LD)
8626 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8627 if ((tls_ty & TLS_TPREL)
8628 || (tlsopt && !(tls_ty & TLS_DTPREL)))
8629 value += DTP_OFFSET - TP_OFFSET;
8632 if (tls_ty & (TLS_LD | TLS_GD))
8634 bfd_put_32 (input_bfd, value,
8635 htab->elf.sgot->contents + off + 4);
8639 bfd_put_32 (input_bfd, value,
8640 htab->elf.sgot->contents + off);
8644 if (tls_ty & (TLS_LD | TLS_GD))
8653 if (off >= (bfd_vma) -2)
8656 if ((tls_type & TLS_TLS) != 0)
8658 if (tls_type != (TLS_TLS | TLS_LD))
8660 if ((tls_mask & TLS_LD) != 0
8662 || !h->def_dynamic))
8664 if (tls_type != (TLS_TLS | TLS_GD))
8666 if ((tls_mask & TLS_GD) != 0)
8668 if (tls_type != (TLS_TLS | TLS_DTPREL))
8670 if ((tls_mask & TLS_DTPREL) != 0)
8677 /* If here for a picfixup, we're done. */
8678 if (r_type != ELF32_R_TYPE (rel->r_info))
8681 relocation = (htab->elf.sgot->output_section->vma
8682 + htab->elf.sgot->output_offset
8684 - SYM_VAL (htab->elf.hgot));
8686 /* Addends on got relocations don't make much sense.
8687 x+off@got is actually x@got+off, and since the got is
8688 generated by a hash table traversal, the value in the
8689 got at entry m+n bears little relation to the entry m. */
8691 info->callbacks->einfo
8692 /* xgettext:c-format */
8693 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8694 input_bfd, input_section, rel->r_offset,
8700 /* Relocations that need no special processing. */
8701 case R_PPC_LOCAL24PC:
8702 /* It makes no sense to point a local relocation
8703 at a symbol not in this object. */
8704 if (unresolved_reloc)
8706 (*info->callbacks->undefined_symbol) (info,
8707 h->root.root.string,
8714 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8716 /* @local on an ifunc does not really make sense since
8717 the ifunc resolver can take you anywhere. More
8718 seriously, calls to ifuncs must go through a plt call
8719 stub, and for pic the plt call stubs uses r30 to
8720 access the PLT. The problem is that a call that is
8721 local won't have the +32k reloc addend trick marking
8722 -fPIC code, so the linker won't know whether r30 is
8723 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8724 /* xgettext:c-format */
8725 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8726 input_bfd, input_section, rel->r_offset,
8727 h->root.root.string);
8731 case R_PPC_DTPREL16:
8732 case R_PPC_DTPREL16_LO:
8733 case R_PPC_DTPREL16_HI:
8734 case R_PPC_DTPREL16_HA:
8735 if (htab->elf.tls_sec != NULL)
8736 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8739 /* Relocations that may need to be propagated if this is a shared
8742 case R_PPC_TPREL16_LO:
8743 case R_PPC_TPREL16_HI:
8744 case R_PPC_TPREL16_HA:
8746 && h->root.type == bfd_link_hash_undefweak
8747 && h->dynindx == -1)
8749 /* Make this relocation against an undefined weak symbol
8750 resolve to zero. This is really just a tweak, since
8751 code using weak externs ought to check that they are
8752 defined before using them. */
8753 bfd_byte *p = contents + rel->r_offset - d_offset;
8754 unsigned int insn = bfd_get_32 (input_bfd, p);
8755 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8757 bfd_put_32 (input_bfd, insn, p);
8760 if (htab->elf.tls_sec != NULL)
8761 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8762 /* The TPREL16 relocs shouldn't really be used in shared
8763 libs as they will result in DT_TEXTREL being set, but
8764 support them anyway. */
8768 if (htab->elf.tls_sec != NULL)
8769 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8772 case R_PPC_DTPREL32:
8773 if (htab->elf.tls_sec != NULL)
8774 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8777 case R_PPC_DTPMOD32:
8783 case R_PPC_REL16_LO:
8784 case R_PPC_REL16_HI:
8785 case R_PPC_REL16_HA:
8786 case R_PPC_REL16DX_HA:
8790 if (h == NULL || h == htab->elf.hgot)
8796 case R_PPC_ADDR16_LO:
8797 case R_PPC_ADDR16_HI:
8798 case R_PPC_ADDR16_HA:
8803 case R_PPC_VLE_REL8:
8804 case R_PPC_VLE_REL15:
8805 case R_PPC_VLE_REL24:
8808 case R_PPC_REL14_BRTAKEN:
8809 case R_PPC_REL14_BRNTAKEN:
8810 /* If these relocations are not to a named symbol, they can be
8811 handled right here, no need to bother the dynamic linker. */
8812 if (SYMBOL_CALLS_LOCAL (info, h)
8813 || h == htab->elf.hgot)
8819 case R_PPC_ADDR14_BRTAKEN:
8820 case R_PPC_ADDR14_BRNTAKEN:
8821 if (h != NULL && !bfd_link_pic (info))
8826 if ((input_section->flags & SEC_ALLOC) == 0
8830 if ((bfd_link_pic (info)
8832 && ((h->root.type == bfd_link_hash_undefined
8833 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8834 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8835 || (h->root.type == bfd_link_hash_undefweak
8836 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8837 && (must_be_dyn_reloc (info, r_type)
8838 || !SYMBOL_CALLS_LOCAL (info, h)))
8839 || (ELIMINATE_COPY_RELOCS
8840 && !bfd_link_pic (info)
8845 && !(h->protected_def
8846 && ppc_elf_hash_entry (h)->has_addr16_ha
8847 && ppc_elf_hash_entry (h)->has_addr16_lo
8848 && htab->params->pic_fixup > 0)))
8854 fprintf (stderr, "ppc_elf_relocate_section needs to "
8855 "create relocation for %s\n",
8856 (h && h->root.root.string
8857 ? h->root.root.string : "<unknown>"));
8860 /* When generating a shared object, these relocations
8861 are copied into the output file to be resolved at run
8863 sreloc = elf_section_data (input_section)->sreloc;
8865 sreloc = htab->elf.irelplt;
8870 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8873 if (outrel.r_offset == (bfd_vma) -1
8874 || outrel.r_offset == (bfd_vma) -2)
8875 skip = (int) outrel.r_offset;
8876 outrel.r_offset += (input_section->output_section->vma
8877 + input_section->output_offset);
8880 memset (&outrel, 0, sizeof outrel);
8882 && (h->root.type == bfd_link_hash_undefined
8883 || h->root.type == bfd_link_hash_undefweak))
8884 || !SYMBOL_REFERENCES_LOCAL (info, h))
8886 BFD_ASSERT (h->dynindx != -1);
8887 unresolved_reloc = FALSE;
8888 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8889 outrel.r_addend = rel->r_addend;
8893 outrel.r_addend = relocation + rel->r_addend;
8895 if (r_type != R_PPC_ADDR32)
8901 /* If we get here when building a static
8902 executable, then the libc startup function
8903 responsible for applying indirect function
8904 relocations is going to complain about
8906 If we get here when building a dynamic
8907 executable, it will be because we have
8908 a text relocation. The dynamic loader
8909 will set the text segment writable and
8910 non-executable to apply text relocations.
8911 So we'll segfault when trying to run the
8912 indirection function to resolve the reloc. */
8913 info->callbacks->einfo
8914 /* xgettext:c-format */
8915 (_("%H: relocation %s for indirect "
8916 "function %s unsupported\n"),
8917 input_bfd, input_section, rel->r_offset,
8922 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8924 else if (sec == NULL || sec->owner == NULL)
8926 bfd_set_error (bfd_error_bad_value);
8933 /* We are turning this relocation into one
8934 against a section symbol. It would be
8935 proper to subtract the symbol's value,
8936 osec->vma, from the emitted reloc addend,
8937 but ld.so expects buggy relocs.
8938 FIXME: Why not always use a zero index? */
8939 osec = sec->output_section;
8940 indx = elf_section_data (osec)->dynindx;
8943 osec = htab->elf.text_index_section;
8944 indx = elf_section_data (osec)->dynindx;
8946 BFD_ASSERT (indx != 0);
8949 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8950 indx, osec->name, osec->flags,
8951 h->root.root.string);
8955 outrel.r_info = ELF32_R_INFO (indx, r_type);
8957 else if (ifunc != NULL)
8958 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8960 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8963 loc = sreloc->contents;
8964 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8965 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8970 /* This reloc will be computed at runtime. Clear the memory
8971 so that it contains a predictable value for prelink. */
8974 relocation = howto->pc_relative ? outrel.r_offset : 0;
8979 else if (r_type == R_PPC_DTPMOD32
8980 && htab->plt_type == PLT_NEW
8981 && !htab->params->no_tls_get_addr_opt
8982 && htab->tls_get_addr != NULL
8983 && htab->tls_get_addr->plt.plist != NULL)
8985 /* Set up for __tls_get_addr_opt stub when this entry
8986 does not have dynamic relocs. */
8988 /* Set up the next word for local dynamic. If it turns
8989 out to be global dynamic, the reloc will overwrite
8991 if (rel->r_offset + 8 <= input_section->size)
8992 bfd_put_32 (input_bfd, DTP_OFFSET - TP_OFFSET,
8993 contents + rel->r_offset + 4);
8995 else if (r_type == R_PPC_DTPREL32
8996 && htab->plt_type == PLT_NEW
8997 && !htab->params->no_tls_get_addr_opt
8998 && htab->tls_get_addr != NULL
8999 && htab->tls_get_addr->plt.plist != NULL
9001 && rel[-1].r_info == ELF32_R_INFO (r_symndx, R_PPC_DTPMOD32)
9002 && rel[-1].r_offset + 4 == rel->r_offset)
9004 /* __tls_get_addr_opt stub value. */
9005 addend += DTP_OFFSET - TP_OFFSET;
9009 case R_PPC_RELAX_PLT:
9010 case R_PPC_RELAX_PLTREL24:
9013 struct plt_entry *ent;
9014 bfd_vma got2_addend = 0;
9016 if (r_type == R_PPC_RELAX_PLTREL24)
9018 if (bfd_link_pic (info))
9019 got2_addend = addend;
9022 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
9023 if (htab->plt_type == PLT_NEW)
9024 relocation = (htab->glink->output_section->vma
9025 + htab->glink->output_offset
9026 + ent->glink_offset);
9028 relocation = (htab->elf.splt->output_section->vma
9029 + htab->elf.splt->output_offset
9038 size_t insn_offset = rel->r_offset;
9041 if (bfd_link_pic (info))
9043 relocation -= (input_section->output_section->vma
9044 + input_section->output_offset
9045 + rel->r_offset - 4);
9046 stub = shared_stub_entry;
9047 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
9048 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
9049 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
9051 size = ARRAY_SIZE (shared_stub_entry) - 3;
9056 size = ARRAY_SIZE (stub_entry);
9059 relocation += addend;
9060 if (bfd_link_relocatable (info))
9063 /* First insn is HA, second is LO. */
9065 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9066 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9070 insn |= relocation & 0xffff;
9071 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9079 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9083 /* Rewrite the reloc and convert one of the trailing nop
9084 relocs to describe this relocation. */
9085 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9086 /* The relocs are at the bottom 2 bytes */
9087 wrel->r_offset = rel->r_offset + d_offset;
9088 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9089 wrel->r_addend = rel->r_addend;
9090 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9092 wrel->r_offset += 4;
9093 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9097 /* Indirect .sdata relocation. */
9098 case R_PPC_EMB_SDAI16:
9099 BFD_ASSERT (htab->sdata[0].section != NULL);
9100 if (!is_static_defined (htab->sdata[0].sym))
9102 unresolved_reloc = TRUE;
9106 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9107 h, relocation, rel);
9111 /* Indirect .sdata2 relocation. */
9112 case R_PPC_EMB_SDA2I16:
9113 BFD_ASSERT (htab->sdata[1].section != NULL);
9114 if (!is_static_defined (htab->sdata[1].sym))
9116 unresolved_reloc = TRUE;
9120 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9121 h, relocation, rel);
9125 /* Handle the TOC16 reloc. We want to use the offset within the .got
9126 section, not the actual VMA. This is appropriate when generating
9127 an embedded ELF object, for which the .got section acts like the
9128 AIX .toc section. */
9129 case R_PPC_TOC16: /* phony GOT16 relocations */
9130 if (sec == NULL || sec->output_section == NULL)
9132 unresolved_reloc = TRUE;
9135 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9137 || strcmp (bfd_get_section_name (sec->owner, sec),
9140 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9143 case R_PPC_PLTREL24:
9144 if (h != NULL && ifunc == NULL)
9146 struct plt_entry *ent;
9148 ent = find_plt_ent (&h->plt.plist, got2,
9149 bfd_link_pic (info) ? addend : 0);
9151 || htab->elf.splt == NULL)
9153 /* We didn't make a PLT entry for this symbol. This
9154 happens when statically linking PIC code, or when
9155 using -Bsymbolic. */
9159 /* Relocation is to the entry for this symbol in the
9160 procedure linkage table. */
9161 unresolved_reloc = FALSE;
9162 if (htab->plt_type == PLT_NEW)
9163 relocation = (htab->glink->output_section->vma
9164 + htab->glink->output_offset
9165 + ent->glink_offset);
9167 relocation = (htab->elf.splt->output_section->vma
9168 + htab->elf.splt->output_offset
9173 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9174 addend specifies the GOT pointer offset within .got2.
9175 Don't apply it to the relocation field. */
9179 /* Relocate against _SDA_BASE_. */
9180 case R_PPC_SDAREL16:
9183 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9186 || sec->output_section == NULL
9187 || !is_static_defined (sda))
9189 unresolved_reloc = TRUE;
9192 addend -= SYM_VAL (sda);
9194 name = bfd_get_section_name (output_bfd, sec->output_section);
9195 if (!(strcmp (name, ".sdata") == 0
9196 || strcmp (name, ".sbss") == 0))
9198 info->callbacks->einfo
9199 /* xgettext:c-format */
9200 (_("%P: %B: the target (%s) of a %s relocation is "
9201 "in the wrong output section (%s)\n"),
9210 /* Relocate against _SDA2_BASE_. */
9211 case R_PPC_EMB_SDA2REL:
9214 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9217 || sec->output_section == NULL
9218 || !is_static_defined (sda))
9220 unresolved_reloc = TRUE;
9223 addend -= SYM_VAL (sda);
9225 name = bfd_get_section_name (output_bfd, sec->output_section);
9226 if (!(strcmp (name, ".sdata2") == 0
9227 || strcmp (name, ".sbss2") == 0))
9229 info->callbacks->einfo
9230 /* xgettext:c-format */
9231 (_("%P: %B: the target (%s) of a %s relocation is "
9232 "in the wrong output section (%s)\n"),
9241 case R_PPC_VLE_LO16A:
9242 relocation = relocation + addend;
9243 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9244 contents + rel->r_offset, relocation,
9245 split16a_type, htab->params->vle_reloc_fixup);
9248 case R_PPC_VLE_LO16D:
9249 relocation = relocation + addend;
9250 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9251 contents + rel->r_offset, relocation,
9252 split16d_type, htab->params->vle_reloc_fixup);
9255 case R_PPC_VLE_HI16A:
9256 relocation = (relocation + addend) >> 16;
9257 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9258 contents + rel->r_offset, relocation,
9259 split16a_type, htab->params->vle_reloc_fixup);
9262 case R_PPC_VLE_HI16D:
9263 relocation = (relocation + addend) >> 16;
9264 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9265 contents + rel->r_offset, relocation,
9266 split16d_type, htab->params->vle_reloc_fixup);
9269 case R_PPC_VLE_HA16A:
9270 relocation = (relocation + addend + 0x8000) >> 16;
9271 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9272 contents + rel->r_offset, relocation,
9273 split16a_type, htab->params->vle_reloc_fixup);
9276 case R_PPC_VLE_HA16D:
9277 relocation = (relocation + addend + 0x8000) >> 16;
9278 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9279 contents + rel->r_offset, relocation,
9280 split16d_type, htab->params->vle_reloc_fixup);
9283 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9284 case R_PPC_EMB_SDA21:
9285 case R_PPC_VLE_SDA21:
9286 case R_PPC_EMB_RELSDA:
9287 case R_PPC_VLE_SDA21_LO:
9292 struct elf_link_hash_entry *sda = NULL;
9294 if (sec == NULL || sec->output_section == NULL)
9296 unresolved_reloc = TRUE;
9300 name = bfd_get_section_name (output_bfd, sec->output_section);
9301 if (strcmp (name, ".sdata") == 0
9302 || strcmp (name, ".sbss") == 0)
9305 sda = htab->sdata[0].sym;
9307 else if (strcmp (name, ".sdata2") == 0
9308 || strcmp (name, ".sbss2") == 0)
9311 sda = htab->sdata[1].sym;
9313 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9314 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9320 info->callbacks->einfo
9321 /* xgettext:c-format */
9322 (_("%P: %B: the target (%s) of a %s relocation is "
9323 "in the wrong output section (%s)\n"),
9329 bfd_set_error (bfd_error_bad_value);
9336 if (!is_static_defined (sda))
9338 unresolved_reloc = TRUE;
9341 addend -= SYM_VAL (sda);
9344 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9346 && (r_type == R_PPC_VLE_SDA21
9347 || r_type == R_PPC_VLE_SDA21_LO))
9349 relocation = relocation + addend;
9352 /* Force e_li insn, keeping RT from original insn. */
9356 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9357 /* Top 4 bits of value to 17..20. */
9358 insn |= (relocation & 0xf0000) >> 5;
9359 /* Next 5 bits of the value to 11..15. */
9360 insn |= (relocation & 0xf800) << 5;
9361 /* And the final 11 bits of the value to bits 21 to 31. */
9362 insn |= relocation & 0x7ff;
9364 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9366 if (r_type == R_PPC_VLE_SDA21
9367 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9371 else if (r_type == R_PPC_EMB_SDA21
9372 || r_type == R_PPC_VLE_SDA21
9373 || r_type == R_PPC_VLE_SDA21_LO)
9375 /* Fill in register field. */
9376 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9378 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9382 case R_PPC_VLE_SDAREL_LO16A:
9383 case R_PPC_VLE_SDAREL_LO16D:
9384 case R_PPC_VLE_SDAREL_HI16A:
9385 case R_PPC_VLE_SDAREL_HI16D:
9386 case R_PPC_VLE_SDAREL_HA16A:
9387 case R_PPC_VLE_SDAREL_HA16D:
9391 struct elf_link_hash_entry *sda = NULL;
9393 if (sec == NULL || sec->output_section == NULL)
9395 unresolved_reloc = TRUE;
9399 name = bfd_get_section_name (output_bfd, sec->output_section);
9400 if (strcmp (name, ".sdata") == 0
9401 || strcmp (name, ".sbss") == 0)
9402 sda = htab->sdata[0].sym;
9403 else if (strcmp (name, ".sdata2") == 0
9404 || strcmp (name, ".sbss2") == 0)
9405 sda = htab->sdata[1].sym;
9409 /* xgettext:c-format */
9410 (_("%B: the target (%s) of a %s relocation is "
9411 "in the wrong output section (%s)"),
9417 bfd_set_error (bfd_error_bad_value);
9422 if (sda == NULL || !is_static_defined (sda))
9424 unresolved_reloc = TRUE;
9427 value = relocation + addend - SYM_VAL (sda);
9429 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9430 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9431 contents + rel->r_offset, value,
9433 htab->params->vle_reloc_fixup);
9434 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9435 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9436 contents + rel->r_offset, value,
9438 htab->params->vle_reloc_fixup);
9439 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9441 value = value >> 16;
9442 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9443 contents + rel->r_offset, value,
9445 htab->params->vle_reloc_fixup);
9447 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9449 value = value >> 16;
9450 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9451 contents + rel->r_offset, value,
9453 htab->params->vle_reloc_fixup);
9455 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9457 value = (value + 0x8000) >> 16;
9458 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9459 contents + rel->r_offset, value,
9461 htab->params->vle_reloc_fixup);
9463 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9465 value = (value + 0x8000) >> 16;
9466 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9467 contents + rel->r_offset, value,
9469 htab->params->vle_reloc_fixup);
9474 /* Relocate against the beginning of the section. */
9476 case R_PPC_SECTOFF_LO:
9477 case R_PPC_SECTOFF_HI:
9478 case R_PPC_SECTOFF_HA:
9479 if (sec == NULL || sec->output_section == NULL)
9481 unresolved_reloc = TRUE;
9484 addend -= sec->output_section->vma;
9487 /* Negative relocations. */
9488 case R_PPC_EMB_NADDR32:
9489 case R_PPC_EMB_NADDR16:
9490 case R_PPC_EMB_NADDR16_LO:
9491 case R_PPC_EMB_NADDR16_HI:
9492 case R_PPC_EMB_NADDR16_HA:
9493 addend -= 2 * relocation;
9497 case R_PPC_GLOB_DAT:
9498 case R_PPC_JMP_SLOT:
9499 case R_PPC_RELATIVE:
9500 case R_PPC_IRELATIVE:
9502 case R_PPC_PLTREL32:
9503 case R_PPC_PLT16_LO:
9504 case R_PPC_PLT16_HI:
9505 case R_PPC_PLT16_HA:
9507 case R_PPC_EMB_RELSEC16:
9508 case R_PPC_EMB_RELST_LO:
9509 case R_PPC_EMB_RELST_HI:
9510 case R_PPC_EMB_RELST_HA:
9511 case R_PPC_EMB_BIT_FLD:
9512 info->callbacks->einfo
9513 /* xgettext:c-format */
9514 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9519 bfd_set_error (bfd_error_invalid_operation);
9524 /* Do any further special processing. */
9530 case R_PPC_ADDR16_HA:
9531 case R_PPC_REL16_HA:
9532 case R_PPC_REL16DX_HA:
9533 case R_PPC_SECTOFF_HA:
9534 case R_PPC_TPREL16_HA:
9535 case R_PPC_DTPREL16_HA:
9536 case R_PPC_EMB_NADDR16_HA:
9537 case R_PPC_EMB_RELST_HA:
9538 /* It's just possible that this symbol is a weak symbol
9539 that's not actually defined anywhere. In that case,
9540 'sec' would be NULL, and we should leave the symbol
9541 alone (it will be set to zero elsewhere in the link). */
9546 case R_PPC_PLT16_HA:
9547 case R_PPC_GOT16_HA:
9548 case R_PPC_GOT_TLSGD16_HA:
9549 case R_PPC_GOT_TLSLD16_HA:
9550 case R_PPC_GOT_TPREL16_HA:
9551 case R_PPC_GOT_DTPREL16_HA:
9552 /* Add 0x10000 if sign bit in 0:15 is set.
9553 Bits 0:15 are not used. */
9558 case R_PPC_ADDR16_LO:
9560 case R_PPC_GOT16_LO:
9561 case R_PPC_SDAREL16:
9563 case R_PPC_SECTOFF_LO:
9564 case R_PPC_DTPREL16:
9565 case R_PPC_DTPREL16_LO:
9567 case R_PPC_TPREL16_LO:
9568 case R_PPC_GOT_TLSGD16:
9569 case R_PPC_GOT_TLSGD16_LO:
9570 case R_PPC_GOT_TLSLD16:
9571 case R_PPC_GOT_TLSLD16_LO:
9572 case R_PPC_GOT_DTPREL16:
9573 case R_PPC_GOT_DTPREL16_LO:
9574 case R_PPC_GOT_TPREL16:
9575 case R_PPC_GOT_TPREL16_LO:
9577 /* The 32-bit ABI lacks proper relocations to deal with
9578 certain 64-bit instructions. Prevent damage to bits
9579 that make up part of the insn opcode. */
9580 unsigned int insn, mask, lobit;
9582 insn = bfd_get_32 (input_bfd,
9583 contents + rel->r_offset - d_offset);
9585 if (is_insn_ds_form (insn))
9587 else if (is_insn_dq_form (insn))
9591 relocation += addend;
9592 addend = insn & mask;
9593 lobit = mask & relocation;
9596 relocation ^= lobit;
9597 info->callbacks->einfo
9598 /* xgettext:c-format */
9599 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9600 input_bfd, input_section, rel->r_offset,
9601 howto->name, sym_name, mask + 1);
9602 bfd_set_error (bfd_error_bad_value);
9610 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9611 "offset = %ld, addend = %ld\n",
9616 (long) rel->r_offset,
9620 if (unresolved_reloc
9621 && !((input_section->flags & SEC_DEBUGGING) != 0
9623 && _bfd_elf_section_offset (output_bfd, info, input_section,
9624 rel->r_offset) != (bfd_vma) -1)
9626 info->callbacks->einfo
9627 /* xgettext:c-format */
9628 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9629 input_bfd, input_section, rel->r_offset,
9635 /* 16-bit fields in insns mostly have signed values, but a
9636 few insns have 16-bit unsigned values. Really, we should
9637 have different reloc types. */
9638 if (howto->complain_on_overflow != complain_overflow_dont
9639 && howto->dst_mask == 0xffff
9640 && (input_section->flags & SEC_CODE) != 0)
9642 enum complain_overflow complain = complain_overflow_signed;
9644 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9648 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9649 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9650 complain = complain_overflow_bitfield;
9651 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9652 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9653 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9654 complain = complain_overflow_unsigned;
9656 if (howto->complain_on_overflow != complain)
9659 alt_howto.complain_on_overflow = complain;
9664 if (r_type == R_PPC_REL16DX_HA)
9666 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9667 if (rel->r_offset + 4 > input_section->size)
9668 r = bfd_reloc_outofrange;
9673 relocation += addend;
9674 relocation -= (rel->r_offset
9675 + input_section->output_offset
9676 + input_section->output_section->vma);
9678 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9680 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9681 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9686 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9687 rel->r_offset, relocation, addend);
9689 if (r != bfd_reloc_ok)
9691 if (r == bfd_reloc_overflow)
9694 /* On code like "if (foo) foo();" don't report overflow
9695 on a branch to zero when foo is undefined. */
9698 && (h->root.type == bfd_link_hash_undefweak
9699 || h->root.type == bfd_link_hash_undefined)
9700 && is_branch_reloc (r_type)))
9701 info->callbacks->reloc_overflow
9702 (info, (h ? &h->root : NULL), sym_name, howto->name,
9703 rel->r_addend, input_bfd, input_section, rel->r_offset);
9707 info->callbacks->einfo
9708 /* xgettext:c-format */
9709 (_("%H: %s reloc against `%s': error %d\n"),
9710 input_bfd, input_section, rel->r_offset,
9711 howto->name, sym_name, (int) r);
9722 Elf_Internal_Shdr *rel_hdr;
9723 size_t deleted = rel - wrel;
9725 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9726 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9727 if (rel_hdr->sh_size == 0)
9729 /* It is too late to remove an empty reloc section. Leave
9731 ??? What is wrong with an empty section??? */
9732 rel_hdr->sh_size = rel_hdr->sh_entsize;
9737 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9738 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9739 input_section->reloc_count -= deleted;
9743 fprintf (stderr, "\n");
9746 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9747 && input_section->size != input_section->rawsize
9748 && (strcmp (input_section->output_section->name, ".init") == 0
9749 || strcmp (input_section->output_section->name, ".fini") == 0))
9751 /* Branch around the trampolines. */
9752 unsigned int insn = B + input_section->size - input_section->rawsize;
9753 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9756 if (htab->params->ppc476_workaround
9757 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9758 && (!bfd_link_relocatable (info)
9759 || (input_section->output_section->alignment_power
9760 >= htab->params->pagesize_p2)))
9762 bfd_vma start_addr, end_addr, addr;
9763 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9765 if (relax_info->workaround_size != 0)
9771 bfd_put_32 (input_bfd, BA, fill);
9772 p = contents + input_section->size - relax_info->workaround_size;
9773 n = relax_info->workaround_size >> 2;
9776 memcpy (p, fill, 4);
9781 /* The idea is: Replace the last instruction on a page with a
9782 branch to a patch area. Put the insn there followed by a
9783 branch back to the next page. Complicated a little by
9784 needing to handle moved conditional branches, and by not
9785 wanting to touch data-in-text. */
9787 start_addr = (input_section->output_section->vma
9788 + input_section->output_offset);
9789 end_addr = (start_addr + input_section->size
9790 - relax_info->workaround_size);
9791 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9795 bfd_vma offset = addr - start_addr;
9796 Elf_Internal_Rela *lo, *hi;
9797 bfd_boolean is_data;
9798 bfd_vma patch_off, patch_addr;
9801 /* Do we have a data reloc at this offset? If so, leave
9809 rel = lo + (hi - lo) / 2;
9810 if (rel->r_offset < offset)
9812 else if (rel->r_offset > offset + 3)
9816 switch (ELF32_R_TYPE (rel->r_info))
9833 /* Some instructions can be left alone too. Unconditional
9834 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9835 avoid the icache failure.
9837 The problem occurs due to prefetch across a page boundary
9838 where stale instructions can be fetched from the next
9839 page, and the mechanism for flushing these bad
9840 instructions fails under certain circumstances. The
9841 unconditional branches:
9842 1) Branch: b, bl, ba, bla,
9843 2) Branch Conditional: bc, bca, bcl, bcla,
9844 3) Branch Conditional to Link Register: bclr, bclrl,
9845 where (2) and (3) have BO=0x14 making them unconditional,
9846 prevent the bad prefetch because the prefetch itself is
9847 affected by these instructions. This happens even if the
9848 instruction is not executed.
9853 . addi 9,9,new_page@l
9860 The bctr is not predicted taken due to ctr not being
9861 ready, so prefetch continues on past the bctr into the
9862 new page which might have stale instructions. If they
9863 fail to be flushed, then they will be executed after the
9864 bctr executes. Either of the following modifications
9865 prevent the bad prefetch from happening in the first
9868 . lis 9,new_page@ha lis 9,new_page@ha
9869 . addi 9,9,new_page@l addi 9,9,new_page@l
9872 . nop b somewhere_else
9873 . b somewhere_else nop
9874 . new_page: new_page:
9876 insn = bfd_get_32 (input_bfd, contents + offset);
9877 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9878 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9879 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9880 || ((insn & (0x3f << 26)) == (19u << 26)
9881 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9882 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9885 patch_addr = (start_addr + input_section->size
9886 - relax_info->workaround_size);
9887 patch_addr = (patch_addr + 15) & -16;
9888 patch_off = patch_addr - start_addr;
9889 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9892 && rel->r_offset >= offset
9893 && rel->r_offset < offset + 4)
9897 /* If the insn we are patching had a reloc, adjust the
9898 reloc r_offset so that the reloc applies to the moved
9899 location. This matters for -r and --emit-relocs. */
9900 if (rel + 1 != relend)
9902 Elf_Internal_Rela tmp = *rel;
9904 /* Keep the relocs sorted by r_offset. */
9905 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9908 relend[-1].r_offset += patch_off - offset;
9910 /* Adjust REL16 addends too. */
9911 switch (ELF32_R_TYPE (relend[-1].r_info))
9914 case R_PPC_REL16_LO:
9915 case R_PPC_REL16_HI:
9916 case R_PPC_REL16_HA:
9917 relend[-1].r_addend += patch_off - offset;
9923 /* If we are building a PIE or shared library with
9924 non-PIC objects, perhaps we had a dynamic reloc too?
9925 If so, the dynamic reloc must move with the insn. */
9926 sreloc = elf_section_data (input_section)->sreloc;
9929 Elf32_External_Rela *slo, *shi, *srelend;
9932 slo = (Elf32_External_Rela *) sreloc->contents;
9933 shi = srelend = slo + sreloc->reloc_count;
9934 soffset = (offset + input_section->output_section->vma
9935 + input_section->output_offset);
9938 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9939 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9941 if (outrel.r_offset < soffset)
9943 else if (outrel.r_offset > soffset + 3)
9947 if (srel + 1 != srelend)
9949 memmove (srel, srel + 1,
9950 (srelend - (srel + 1)) * sizeof (*srel));
9953 outrel.r_offset += patch_off - offset;
9954 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9964 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9965 && (insn & 2) == 0 /* relative */)
9967 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9969 delta += offset - patch_off;
9970 if (bfd_link_relocatable (info) && rel != NULL)
9972 if (!bfd_link_relocatable (info) && rel != NULL)
9974 enum elf_ppc_reloc_type r_type;
9976 r_type = ELF32_R_TYPE (relend[-1].r_info);
9977 if (r_type == R_PPC_REL14_BRTAKEN)
9978 insn |= BRANCH_PREDICT_BIT;
9979 else if (r_type == R_PPC_REL14_BRNTAKEN)
9980 insn &= ~BRANCH_PREDICT_BIT;
9982 BFD_ASSERT (r_type == R_PPC_REL14);
9984 if ((r_type == R_PPC_REL14_BRTAKEN
9985 || r_type == R_PPC_REL14_BRNTAKEN)
9986 && delta + 0x8000 < 0x10000
9987 && (bfd_signed_vma) delta < 0)
9988 insn ^= BRANCH_PREDICT_BIT;
9990 if (delta + 0x8000 < 0x10000)
9992 bfd_put_32 (input_bfd,
9993 (insn & ~0xfffc) | (delta & 0xfffc),
9994 contents + patch_off);
9996 bfd_put_32 (input_bfd,
9997 B | ((offset + 4 - patch_off) & 0x3fffffc),
9998 contents + patch_off);
10005 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
10007 relend[-1].r_offset += 8;
10008 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
10010 bfd_put_32 (input_bfd,
10011 (insn & ~0xfffc) | 8,
10012 contents + patch_off);
10014 bfd_put_32 (input_bfd,
10015 B | ((offset + 4 - patch_off) & 0x3fffffc),
10016 contents + patch_off);
10018 bfd_put_32 (input_bfd,
10019 B | ((delta - 8) & 0x3fffffc),
10020 contents + patch_off);
10026 bfd_put_32 (input_bfd, insn, contents + patch_off);
10028 bfd_put_32 (input_bfd,
10029 B | ((offset + 4 - patch_off) & 0x3fffffc),
10030 contents + patch_off);
10033 BFD_ASSERT (patch_off <= input_section->size);
10034 relax_info->workaround_size = input_section->size - patch_off;
10041 /* Finish up dynamic symbol handling. We set the contents of various
10042 dynamic sections here. */
10045 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
10046 struct bfd_link_info *info,
10047 struct elf_link_hash_entry *h,
10048 Elf_Internal_Sym *sym)
10050 struct ppc_elf_link_hash_table *htab;
10051 struct plt_entry *ent;
10052 bfd_boolean doneone;
10055 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
10056 h->root.root.string);
10059 htab = ppc_elf_hash_table (info);
10060 BFD_ASSERT (htab->elf.dynobj != NULL);
10063 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10064 if (ent->plt.offset != (bfd_vma) -1)
10068 Elf_Internal_Rela rela;
10070 bfd_vma reloc_index;
10072 if (htab->plt_type == PLT_NEW
10073 || !htab->elf.dynamic_sections_created
10074 || h->dynindx == -1)
10075 reloc_index = ent->plt.offset / 4;
10078 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10079 / htab->plt_slot_size);
10080 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10081 && htab->plt_type == PLT_OLD)
10082 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10085 /* This symbol has an entry in the procedure linkage table.
10087 if (htab->plt_type == PLT_VXWORKS
10088 && htab->elf.dynamic_sections_created
10089 && h->dynindx != -1)
10091 bfd_vma got_offset;
10092 const bfd_vma *plt_entry;
10094 /* The first three entries in .got.plt are reserved. */
10095 got_offset = (reloc_index + 3) * 4;
10097 /* Use the right PLT. */
10098 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10099 : ppc_elf_vxworks_plt_entry;
10101 /* Fill in the .plt on VxWorks. */
10102 if (bfd_link_pic (info))
10104 bfd_put_32 (output_bfd,
10105 plt_entry[0] | PPC_HA (got_offset),
10106 htab->elf.splt->contents + ent->plt.offset + 0);
10107 bfd_put_32 (output_bfd,
10108 plt_entry[1] | PPC_LO (got_offset),
10109 htab->elf.splt->contents + ent->plt.offset + 4);
10113 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10115 bfd_put_32 (output_bfd,
10116 plt_entry[0] | PPC_HA (got_loc),
10117 htab->elf.splt->contents + ent->plt.offset + 0);
10118 bfd_put_32 (output_bfd,
10119 plt_entry[1] | PPC_LO (got_loc),
10120 htab->elf.splt->contents + ent->plt.offset + 4);
10123 bfd_put_32 (output_bfd, plt_entry[2],
10124 htab->elf.splt->contents + ent->plt.offset + 8);
10125 bfd_put_32 (output_bfd, plt_entry[3],
10126 htab->elf.splt->contents + ent->plt.offset + 12);
10128 /* This instruction is an immediate load. The value loaded is
10129 the byte offset of the R_PPC_JMP_SLOT relocation from the
10130 start of the .rela.plt section. The value is stored in the
10131 low-order 16 bits of the load instruction. */
10132 /* NOTE: It appears that this is now an index rather than a
10133 prescaled offset. */
10134 bfd_put_32 (output_bfd,
10135 plt_entry[4] | reloc_index,
10136 htab->elf.splt->contents + ent->plt.offset + 16);
10137 /* This instruction is a PC-relative branch whose target is
10138 the start of the PLT section. The address of this branch
10139 instruction is 20 bytes beyond the start of this PLT entry.
10140 The address is encoded in bits 6-29, inclusive. The value
10141 stored is right-shifted by two bits, permitting a 26-bit
10143 bfd_put_32 (output_bfd,
10145 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10146 htab->elf.splt->contents + ent->plt.offset + 20);
10147 bfd_put_32 (output_bfd, plt_entry[6],
10148 htab->elf.splt->contents + ent->plt.offset + 24);
10149 bfd_put_32 (output_bfd, plt_entry[7],
10150 htab->elf.splt->contents + ent->plt.offset + 28);
10152 /* Fill in the GOT entry corresponding to this PLT slot with
10153 the address immediately after the "bctr" instruction
10154 in this PLT entry. */
10155 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10156 + htab->elf.splt->output_offset
10157 + ent->plt.offset + 16),
10158 htab->elf.sgotplt->contents + got_offset);
10160 if (!bfd_link_pic (info))
10162 /* Fill in a couple of entries in .rela.plt.unloaded. */
10163 loc = htab->srelplt2->contents
10164 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10165 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10166 * sizeof (Elf32_External_Rela));
10168 /* Provide the @ha relocation for the first instruction. */
10169 rela.r_offset = (htab->elf.splt->output_section->vma
10170 + htab->elf.splt->output_offset
10171 + ent->plt.offset + 2);
10172 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10174 rela.r_addend = got_offset;
10175 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10176 loc += sizeof (Elf32_External_Rela);
10178 /* Provide the @l relocation for the second instruction. */
10179 rela.r_offset = (htab->elf.splt->output_section->vma
10180 + htab->elf.splt->output_offset
10181 + ent->plt.offset + 6);
10182 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10184 rela.r_addend = got_offset;
10185 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10186 loc += sizeof (Elf32_External_Rela);
10188 /* Provide a relocation for the GOT entry corresponding to this
10189 PLT slot. Point it at the middle of the .plt entry. */
10190 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10191 + htab->elf.sgotplt->output_offset
10193 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10195 rela.r_addend = ent->plt.offset + 16;
10196 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10199 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10200 In particular, the offset for the relocation is not the
10201 address of the PLT entry for this function, as specified
10202 by the ABI. Instead, the offset is set to the address of
10203 the GOT slot for this function. See EABI 4.4.4.1. */
10204 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10205 + htab->elf.sgotplt->output_offset
10211 asection *splt = htab->elf.splt;
10212 if (!htab->elf.dynamic_sections_created
10213 || h->dynindx == -1)
10214 splt = htab->elf.iplt;
10216 rela.r_offset = (splt->output_section->vma
10217 + splt->output_offset
10218 + ent->plt.offset);
10219 if (htab->plt_type == PLT_OLD
10220 || !htab->elf.dynamic_sections_created
10221 || h->dynindx == -1)
10223 /* We don't need to fill in the .plt. The ppc dynamic
10224 linker will fill it in. */
10228 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10229 + htab->glink->output_section->vma
10230 + htab->glink->output_offset);
10231 bfd_put_32 (output_bfd, val,
10232 splt->contents + ent->plt.offset);
10236 /* Fill in the entry in the .rela.plt section. */
10238 if (!htab->elf.dynamic_sections_created
10239 || h->dynindx == -1)
10241 BFD_ASSERT (h->type == STT_GNU_IFUNC
10243 && (h->root.type == bfd_link_hash_defined
10244 || h->root.type == bfd_link_hash_defweak));
10245 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10246 rela.r_addend = SYM_VAL (h);
10249 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10251 if (!htab->elf.dynamic_sections_created
10252 || h->dynindx == -1)
10253 loc = (htab->elf.irelplt->contents
10254 + (htab->elf.irelplt->reloc_count++
10255 * sizeof (Elf32_External_Rela)));
10257 loc = (htab->elf.srelplt->contents
10258 + reloc_index * sizeof (Elf32_External_Rela));
10259 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10261 if (!h->def_regular)
10263 /* Mark the symbol as undefined, rather than as
10264 defined in the .plt section. Leave the value if
10265 there were any relocations where pointer equality
10266 matters (this is a clue for the dynamic linker, to
10267 make function pointer comparisons work between an
10268 application and shared library), otherwise set it
10270 sym->st_shndx = SHN_UNDEF;
10271 if (!h->pointer_equality_needed)
10273 else if (!h->ref_regular_nonweak)
10275 /* This breaks function pointer comparisons, but
10276 that is better than breaking tests for a NULL
10277 function pointer. */
10281 else if (h->type == STT_GNU_IFUNC
10282 && !bfd_link_pic (info))
10284 /* Set the value of ifunc symbols in a non-pie
10285 executable to the glink entry. This is to avoid
10286 text relocations. We can't do this for ifunc in
10287 allocate_dynrelocs, as we do for normal dynamic
10288 function symbols with plt entries, because we need
10289 to keep the original value around for the ifunc
10291 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10292 (output_bfd, htab->glink->output_section));
10293 sym->st_value = (ent->glink_offset
10294 + htab->glink->output_offset
10295 + htab->glink->output_section->vma);
10300 if (htab->plt_type == PLT_NEW
10301 || !htab->elf.dynamic_sections_created
10302 || h->dynindx == -1)
10305 asection *splt = htab->elf.splt;
10306 if (!htab->elf.dynamic_sections_created
10307 || h->dynindx == -1)
10308 splt = htab->elf.iplt;
10310 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10312 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10314 bfd_put_32 (output_bfd, LWZ_11_3, p);
10316 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10318 bfd_put_32 (output_bfd, MR_0_3, p);
10320 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10322 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10324 bfd_put_32 (output_bfd, BEQLR, p);
10326 bfd_put_32 (output_bfd, MR_3_0, p);
10328 bfd_put_32 (output_bfd, NOP, p);
10332 write_glink_stub (ent, splt, p, info);
10334 if (!bfd_link_pic (info))
10335 /* We only need one non-PIC glink stub. */
10345 Elf_Internal_Rela rela;
10348 /* This symbols needs a copy reloc. Set it up. */
10351 fprintf (stderr, ", copy");
10354 BFD_ASSERT (h->dynindx != -1);
10356 if (ppc_elf_hash_entry (h)->has_sda_refs)
10358 else if (h->root.u.def.section == htab->elf.sdynrelro)
10359 s = htab->elf.sreldynrelro;
10361 s = htab->elf.srelbss;
10362 BFD_ASSERT (s != NULL);
10364 rela.r_offset = SYM_VAL (h);
10365 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10367 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10368 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10372 fprintf (stderr, "\n");
10378 static enum elf_reloc_type_class
10379 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10380 const asection *rel_sec,
10381 const Elf_Internal_Rela *rela)
10383 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10385 if (rel_sec == htab->elf.irelplt)
10386 return reloc_class_ifunc;
10388 switch (ELF32_R_TYPE (rela->r_info))
10390 case R_PPC_RELATIVE:
10391 return reloc_class_relative;
10392 case R_PPC_JMP_SLOT:
10393 return reloc_class_plt;
10395 return reloc_class_copy;
10397 return reloc_class_normal;
10401 /* Finish up the dynamic sections. */
10404 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10405 struct bfd_link_info *info)
10408 struct ppc_elf_link_hash_table *htab;
10411 bfd_boolean ret = TRUE;
10414 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10417 htab = ppc_elf_hash_table (info);
10418 dynobj = htab->elf.dynobj;
10419 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10422 if (htab->elf.hgot != NULL)
10423 got = SYM_VAL (htab->elf.hgot);
10425 if (htab->elf.dynamic_sections_created)
10427 Elf32_External_Dyn *dyncon, *dynconend;
10429 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10431 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10432 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10433 for (; dyncon < dynconend; dyncon++)
10435 Elf_Internal_Dyn dyn;
10438 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10443 if (htab->is_vxworks)
10444 s = htab->elf.sgotplt;
10446 s = htab->elf.splt;
10447 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10451 dyn.d_un.d_val = htab->elf.srelplt->size;
10455 s = htab->elf.srelplt;
10456 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10460 dyn.d_un.d_ptr = got;
10464 if (htab->is_vxworks
10465 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10470 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10474 if (htab->elf.sgot != NULL
10475 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10477 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10478 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10480 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10482 p += htab->elf.hgot->root.u.def.value;
10483 if (htab->plt_type == PLT_OLD)
10485 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10486 so that a function can easily find the address of
10487 _GLOBAL_OFFSET_TABLE_. */
10488 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10489 < htab->elf.hgot->root.u.def.section->size);
10490 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10495 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10496 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10497 < htab->elf.hgot->root.u.def.section->size);
10498 bfd_put_32 (output_bfd, val, p);
10503 /* xgettext:c-format */
10504 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10505 htab->elf.hgot->root.root.string,
10506 (htab->elf.sgotplt != NULL
10507 ? htab->elf.sgotplt->name
10508 : htab->elf.sgot->name));
10509 bfd_set_error (bfd_error_bad_value);
10513 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10516 /* Fill in the first entry in the VxWorks procedure linkage table. */
10517 if (htab->is_vxworks
10518 && htab->elf.splt != NULL
10519 && htab->elf.splt->size != 0
10520 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10522 asection *splt = htab->elf.splt;
10523 /* Use the right PLT. */
10524 const bfd_vma *plt_entry = (bfd_link_pic (info)
10525 ? ppc_elf_vxworks_pic_plt0_entry
10526 : ppc_elf_vxworks_plt0_entry);
10528 if (!bfd_link_pic (info))
10530 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10532 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10533 splt->contents + 0);
10534 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10535 splt->contents + 4);
10539 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10540 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10542 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10543 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10544 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10545 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10546 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10547 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10549 if (! bfd_link_pic (info))
10551 Elf_Internal_Rela rela;
10554 loc = htab->srelplt2->contents;
10556 /* Output the @ha relocation for the first instruction. */
10557 rela.r_offset = (htab->elf.splt->output_section->vma
10558 + htab->elf.splt->output_offset
10560 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10562 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10563 loc += sizeof (Elf32_External_Rela);
10565 /* Output the @l relocation for the second instruction. */
10566 rela.r_offset = (htab->elf.splt->output_section->vma
10567 + htab->elf.splt->output_offset
10569 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10571 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10572 loc += sizeof (Elf32_External_Rela);
10574 /* Fix up the remaining relocations. They may have the wrong
10575 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10576 in which symbols were output. */
10577 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10579 Elf_Internal_Rela rel;
10581 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10582 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10583 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10584 loc += sizeof (Elf32_External_Rela);
10586 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10587 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10588 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10589 loc += sizeof (Elf32_External_Rela);
10591 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10592 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10593 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10594 loc += sizeof (Elf32_External_Rela);
10599 if (htab->glink != NULL
10600 && htab->glink->contents != NULL
10601 && htab->elf.dynamic_sections_created)
10604 unsigned char *endp;
10609 * PIC glink code is the following:
10611 * # ith PLT code stub.
10612 * addis 11,30,(plt+(i-1)*4-got)@ha
10613 * lwz 11,(plt+(i-1)*4-got)@l(11)
10617 * # A table of branches, one for each plt entry.
10618 * # The idea is that the plt call stub loads ctr and r11 with these
10619 * # addresses, so (r11 - res_0) gives the plt index * 4.
10620 * res_0: b PLTresolve
10621 * res_1: b PLTresolve
10623 * # Some number of entries towards the end can be nops
10629 * addis 11,11,(1f-res_0)@ha
10632 * 1: addi 11,11,(1b-res_0)@l
10635 * sub 11,11,12 # r11 = index * 4
10636 * addis 12,12,(got+4-1b)@ha
10637 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10638 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10641 * add 11,0,11 # r11 = index * 12 = reloc offset.
10644 static const unsigned int pic_plt_resolve[] =
10665 * Non-PIC glink code is a little simpler.
10667 * # ith PLT code stub.
10668 * lis 11,(plt+(i-1)*4)@ha
10669 * lwz 11,(plt+(i-1)*4)@l(11)
10673 * The branch table is the same, then comes
10676 * lis 12,(got+4)@ha
10677 * addis 11,11,(-res_0)@ha
10678 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10679 * addi 11,11,(-res_0)@l # r11 = index * 4
10682 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10683 * add 11,0,11 # r11 = index * 12 = reloc offset.
10686 static const unsigned int plt_resolve[] =
10706 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10708 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10711 /* Build the branch table, one for each plt entry (less one),
10712 and perhaps some padding. */
10713 p = htab->glink->contents;
10714 p += htab->glink_pltresolve;
10715 endp = htab->glink->contents;
10716 endp += htab->glink->size - GLINK_PLTRESOLVE;
10717 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10719 bfd_put_32 (output_bfd, B + endp - p, p);
10724 bfd_put_32 (output_bfd, NOP, p);
10728 res0 = (htab->glink_pltresolve
10729 + htab->glink->output_section->vma
10730 + htab->glink->output_offset);
10732 if (htab->params->ppc476_workaround)
10734 /* Ensure that a call stub at the end of a page doesn't
10735 result in prefetch over the end of the page into the
10736 glink branch table. */
10737 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10739 bfd_vma glink_start = (htab->glink->output_section->vma
10740 + htab->glink->output_offset);
10742 for (page_addr = res0 & -pagesize;
10743 page_addr > glink_start;
10744 page_addr -= pagesize)
10746 /* We have a plt call stub that may need fixing. */
10750 loc = htab->glink->contents + page_addr - 4 - glink_start;
10751 insn = bfd_get_32 (output_bfd, loc);
10754 /* By alignment, we know that there must be at least
10755 one other call stub before this one. */
10756 insn = bfd_get_32 (output_bfd, loc - 16);
10758 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10760 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10765 /* Last comes the PLTresolve stub. */
10766 if (bfd_link_pic (info))
10770 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10772 unsigned int insn = pic_plt_resolve[i];
10774 if (htab->params->ppc476_workaround && insn == NOP)
10776 bfd_put_32 (output_bfd, insn, p);
10779 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10781 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10782 + htab->glink->output_section->vma
10783 + htab->glink->output_offset);
10785 bfd_put_32 (output_bfd,
10786 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10787 bfd_put_32 (output_bfd,
10788 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10789 bfd_put_32 (output_bfd,
10790 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10791 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10793 bfd_put_32 (output_bfd,
10794 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10795 bfd_put_32 (output_bfd,
10796 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10800 bfd_put_32 (output_bfd,
10801 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10802 bfd_put_32 (output_bfd,
10803 LWZ_12_12 + 4, p + 9*4);
10808 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10810 unsigned int insn = plt_resolve[i];
10812 if (htab->params->ppc476_workaround && insn == NOP)
10814 bfd_put_32 (output_bfd, insn, p);
10817 p -= 4 * ARRAY_SIZE (plt_resolve);
10819 bfd_put_32 (output_bfd,
10820 LIS_12 + PPC_HA (got + 4), p + 0*4);
10821 bfd_put_32 (output_bfd,
10822 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10823 bfd_put_32 (output_bfd,
10824 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10825 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10827 bfd_put_32 (output_bfd,
10828 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10829 bfd_put_32 (output_bfd,
10830 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10834 bfd_put_32 (output_bfd,
10835 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10836 bfd_put_32 (output_bfd,
10837 LWZ_12_12 + 4, p + 6*4);
10842 if (htab->glink_eh_frame != NULL
10843 && htab->glink_eh_frame->contents != NULL)
10845 unsigned char *p = htab->glink_eh_frame->contents;
10848 p += sizeof (glink_eh_frame_cie);
10853 /* Offset to .glink. */
10854 val = (htab->glink->output_section->vma
10855 + htab->glink->output_offset);
10856 val -= (htab->glink_eh_frame->output_section->vma
10857 + htab->glink_eh_frame->output_offset);
10858 val -= p - htab->glink_eh_frame->contents;
10859 bfd_put_32 (htab->elf.dynobj, val, p);
10861 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10862 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10863 htab->glink_eh_frame,
10864 htab->glink_eh_frame->contents))
10871 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10872 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10873 #define TARGET_BIG_SYM powerpc_elf32_vec
10874 #define TARGET_BIG_NAME "elf32-powerpc"
10875 #define ELF_ARCH bfd_arch_powerpc
10876 #define ELF_TARGET_ID PPC32_ELF_DATA
10877 #define ELF_MACHINE_CODE EM_PPC
10878 #ifdef __QNXTARGET__
10879 #define ELF_MAXPAGESIZE 0x1000
10880 #define ELF_COMMONPAGESIZE 0x1000
10882 #define ELF_MAXPAGESIZE 0x10000
10883 #define ELF_COMMONPAGESIZE 0x10000
10885 #define ELF_MINPAGESIZE 0x1000
10886 #define elf_info_to_howto ppc_elf_info_to_howto
10888 #ifdef EM_CYGNUS_POWERPC
10889 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10893 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10896 #define elf_backend_plt_not_loaded 1
10897 #define elf_backend_want_dynrelro 1
10898 #define elf_backend_can_gc_sections 1
10899 #define elf_backend_can_refcount 1
10900 #define elf_backend_rela_normal 1
10901 #define elf_backend_caches_rawsize 1
10903 #define bfd_elf32_mkobject ppc_elf_mkobject
10904 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10905 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10906 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10907 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10908 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10909 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10910 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10912 #define elf_backend_object_p ppc_elf_object_p
10913 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10914 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10915 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10916 #define elf_backend_relocate_section ppc_elf_relocate_section
10917 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10918 #define elf_backend_check_relocs ppc_elf_check_relocs
10919 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10920 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10921 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10922 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10923 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10924 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10925 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10926 #define elf_backend_fake_sections ppc_elf_fake_sections
10927 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10928 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10929 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10930 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10931 #define elf_backend_write_core_note ppc_elf_write_core_note
10932 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10933 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10934 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10935 #define elf_backend_write_section ppc_elf_write_section
10936 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10937 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10938 #define elf_backend_action_discarded ppc_elf_action_discarded
10939 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10940 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10942 #include "elf32-target.h"
10944 /* FreeBSD Target */
10946 #undef TARGET_LITTLE_SYM
10947 #undef TARGET_LITTLE_NAME
10949 #undef TARGET_BIG_SYM
10950 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10951 #undef TARGET_BIG_NAME
10952 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10955 #define ELF_OSABI ELFOSABI_FREEBSD
10958 #define elf32_bed elf32_powerpc_fbsd_bed
10960 #include "elf32-target.h"
10962 /* VxWorks Target */
10964 #undef TARGET_LITTLE_SYM
10965 #undef TARGET_LITTLE_NAME
10967 #undef TARGET_BIG_SYM
10968 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10969 #undef TARGET_BIG_NAME
10970 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10974 /* VxWorks uses the elf default section flags for .plt. */
10975 static const struct bfd_elf_special_section *
10976 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10978 if (sec->name == NULL)
10981 if (strcmp (sec->name, ".plt") == 0)
10982 return _bfd_elf_get_sec_type_attr (abfd, sec);
10984 return ppc_elf_get_sec_type_attr (abfd, sec);
10987 /* Like ppc_elf_link_hash_table_create, but overrides
10988 appropriately for VxWorks. */
10989 static struct bfd_link_hash_table *
10990 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10992 struct bfd_link_hash_table *ret;
10994 ret = ppc_elf_link_hash_table_create (abfd);
10997 struct ppc_elf_link_hash_table *htab
10998 = (struct ppc_elf_link_hash_table *)ret;
10999 htab->is_vxworks = 1;
11000 htab->plt_type = PLT_VXWORKS;
11001 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
11002 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
11003 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
11008 /* Tweak magic VxWorks symbols as they are loaded. */
11010 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
11011 struct bfd_link_info *info,
11012 Elf_Internal_Sym *sym,
11013 const char **namep ATTRIBUTE_UNUSED,
11014 flagword *flagsp ATTRIBUTE_UNUSED,
11018 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
11022 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
11026 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11028 ppc_elf_final_write_processing(abfd, linker);
11029 elf_vxworks_final_write_processing(abfd, linker);
11032 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
11034 #undef elf_backend_want_plt_sym
11035 #define elf_backend_want_plt_sym 1
11036 #undef elf_backend_want_got_plt
11037 #define elf_backend_want_got_plt 1
11038 #undef elf_backend_got_symbol_offset
11039 #define elf_backend_got_symbol_offset 0
11040 #undef elf_backend_plt_not_loaded
11041 #define elf_backend_plt_not_loaded 0
11042 #undef elf_backend_plt_readonly
11043 #define elf_backend_plt_readonly 1
11044 #undef elf_backend_got_header_size
11045 #define elf_backend_got_header_size 12
11046 #undef elf_backend_dtrel_excludes_plt
11047 #define elf_backend_dtrel_excludes_plt 1
11049 #undef bfd_elf32_get_synthetic_symtab
11051 #undef bfd_elf32_bfd_link_hash_table_create
11052 #define bfd_elf32_bfd_link_hash_table_create \
11053 ppc_elf_vxworks_link_hash_table_create
11054 #undef elf_backend_add_symbol_hook
11055 #define elf_backend_add_symbol_hook \
11056 ppc_elf_vxworks_add_symbol_hook
11057 #undef elf_backend_link_output_symbol_hook
11058 #define elf_backend_link_output_symbol_hook \
11059 elf_vxworks_link_output_symbol_hook
11060 #undef elf_backend_final_write_processing
11061 #define elf_backend_final_write_processing \
11062 ppc_elf_vxworks_final_write_processing
11063 #undef elf_backend_get_sec_type_attr
11064 #define elf_backend_get_sec_type_attr \
11065 ppc_elf_vxworks_get_sec_type_attr
11066 #undef elf_backend_emit_relocs
11067 #define elf_backend_emit_relocs \
11068 elf_vxworks_emit_relocs
11071 #define elf32_bed ppc_elf_vxworks_bed
11072 #undef elf_backend_post_process_headers
11074 #include "elf32-target.h"