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 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1750 HOWTO (R_PPC_16DX_HA, /* type */
1751 16, /* rightshift */
1752 2, /* size (0 = byte, 1 = short, 2 = long) */
1754 FALSE, /* pc_relative */
1756 complain_overflow_signed, /* complain_on_overflow */
1757 ppc_elf_addr16_ha_reloc, /* special_function */
1758 "R_PPC_16DX_HA", /* name */
1759 FALSE, /* partial_inplace */
1761 0x1fffc1, /* dst_mask */
1762 FALSE), /* pcrel_offset */
1764 /* GNU extension to record C++ vtable hierarchy. */
1765 HOWTO (R_PPC_GNU_VTINHERIT, /* 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_VTINHERIT", /* name */
1774 FALSE, /* partial_inplace */
1777 FALSE), /* pcrel_offset */
1779 /* GNU extension to record C++ vtable member usage. */
1780 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1782 0, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE, /* pc_relative */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 NULL, /* special_function */
1788 "R_PPC_GNU_VTENTRY", /* name */
1789 FALSE, /* partial_inplace */
1792 FALSE), /* pcrel_offset */
1794 /* Phony reloc to handle AIX style TOC entries. */
1795 HOWTO (R_PPC_TOC16, /* type */
1797 1, /* size (0 = byte, 1 = short, 2 = long) */
1799 FALSE, /* pc_relative */
1801 complain_overflow_signed, /* complain_on_overflow */
1802 ppc_elf_unhandled_reloc, /* special_function */
1803 "R_PPC_TOC16", /* name */
1804 FALSE, /* partial_inplace */
1806 0xffff, /* dst_mask */
1807 FALSE), /* pcrel_offset */
1810 /* External 32-bit PPC structure for PRPSINFO. This structure is
1811 ABI-defined, thus we choose to use char arrays here in order to
1812 avoid dealing with different types in different architectures.
1814 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1815 most non-PPC architectures use `short int'.
1817 This structure will ultimately be written in the corefile's note
1818 section, as the PRPSINFO. */
1820 struct elf_external_ppc_linux_prpsinfo32
1822 char pr_state; /* Numeric process state. */
1823 char pr_sname; /* Char for pr_state. */
1824 char pr_zomb; /* Zombie. */
1825 char pr_nice; /* Nice val. */
1826 char pr_flag[4]; /* Flags. */
1833 char pr_fname[16]; /* Filename of executable. */
1834 char pr_psargs[80]; /* Initial part of arg list. */
1837 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1838 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1841 swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1842 const struct elf_internal_linux_prpsinfo *from,
1843 struct elf_external_ppc_linux_prpsinfo32 *to)
1845 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1846 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1847 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1848 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1849 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1850 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1851 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1852 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1853 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1854 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1855 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1856 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1857 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1860 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1863 ppc_elf_howto_init (void)
1865 unsigned int i, type;
1868 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1871 type = ppc_elf_howto_raw[i].type;
1872 if (type >= (sizeof (ppc_elf_howto_table)
1873 / sizeof (ppc_elf_howto_table[0])))
1875 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1879 static reloc_howto_type *
1880 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1881 bfd_reloc_code_real_type code)
1883 enum elf_ppc_reloc_type r;
1885 /* Initialize howto table if not already done. */
1886 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1887 ppc_elf_howto_init ();
1894 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1895 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1896 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1897 case BFD_RELOC_PPC64_ADDR16_DS:
1898 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1899 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1900 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1901 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1902 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1903 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1904 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1905 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1906 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1907 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1908 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1909 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1910 case BFD_RELOC_PPC64_GOT16_DS:
1911 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1912 case BFD_RELOC_PPC64_GOT16_LO_DS:
1913 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1914 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1915 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1916 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1917 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1918 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1919 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1920 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1921 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1922 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1923 case BFD_RELOC_PPC64_PLT16_LO_DS:
1924 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1925 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1926 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1927 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1928 case BFD_RELOC_PPC64_SECTOFF_DS:
1929 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1930 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1931 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1932 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1933 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1934 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1935 case BFD_RELOC_PPC64_TOC16_DS:
1936 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1937 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1938 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1939 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1940 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1941 case BFD_RELOC_PPC64_TPREL16_DS:
1942 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1943 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1944 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1945 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1946 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1947 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1948 case BFD_RELOC_PPC64_DTPREL16_DS:
1949 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1950 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1951 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1952 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1953 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1954 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1955 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1956 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1957 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1958 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1959 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1960 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1961 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1962 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1963 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1964 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1965 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1966 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1967 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1968 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1969 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1970 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1971 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1972 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1973 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1974 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1975 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1976 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1977 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1978 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1979 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1980 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1981 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1982 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1983 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1984 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1985 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1986 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1987 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1988 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1989 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1990 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1991 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1992 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1993 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1994 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1995 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1996 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1997 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1998 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1999 r = R_PPC_VLE_SDAREL_LO16A;
2001 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
2002 r = R_PPC_VLE_SDAREL_LO16D;
2004 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
2005 r = R_PPC_VLE_SDAREL_HI16A;
2007 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
2008 r = R_PPC_VLE_SDAREL_HI16D;
2010 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
2011 r = R_PPC_VLE_SDAREL_HA16A;
2013 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
2014 r = R_PPC_VLE_SDAREL_HA16D;
2016 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2017 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2018 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2019 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2020 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
2021 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2022 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2023 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2026 return ppc_elf_howto_table[r];
2029 static reloc_howto_type *
2030 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2036 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2038 if (ppc_elf_howto_raw[i].name != NULL
2039 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2040 return &ppc_elf_howto_raw[i];
2045 /* Set the howto pointer for a PowerPC ELF reloc. */
2048 ppc_elf_info_to_howto (bfd *abfd,
2050 Elf_Internal_Rela *dst)
2052 unsigned int r_type;
2054 /* Initialize howto table if not already done. */
2055 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2056 ppc_elf_howto_init ();
2058 r_type = ELF32_R_TYPE (dst->r_info);
2059 if (r_type >= R_PPC_max)
2061 /* xgettext:c-format */
2062 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2064 bfd_set_error (bfd_error_bad_value);
2065 r_type = R_PPC_NONE;
2067 cache_ptr->howto = ppc_elf_howto_table[r_type];
2069 /* Just because the above assert didn't trigger doesn't mean that
2070 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2071 if (!cache_ptr->howto)
2073 /* xgettext:c-format */
2074 _bfd_error_handler (_("%B: invalid relocation type %d"),
2076 bfd_set_error (bfd_error_bad_value);
2078 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2082 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2084 static bfd_reloc_status_type
2085 ppc_elf_addr16_ha_reloc (bfd *abfd,
2086 arelent *reloc_entry,
2089 asection *input_section,
2091 char **error_message ATTRIBUTE_UNUSED)
2093 enum elf_ppc_reloc_type r_type;
2095 bfd_size_type octets;
2098 if (output_bfd != NULL)
2100 reloc_entry->address += input_section->output_offset;
2101 return bfd_reloc_ok;
2104 reloc_entry->addend += 0x8000;
2105 r_type = reloc_entry->howto->type;
2106 if (r_type != R_PPC_REL16DX_HA)
2107 return bfd_reloc_continue;
2110 if (!bfd_is_com_section (symbol->section))
2111 value = symbol->value;
2112 value += (reloc_entry->addend
2113 + symbol->section->output_offset
2114 + symbol->section->output_section->vma);
2115 value -= (reloc_entry->address
2116 + input_section->output_offset
2117 + input_section->output_section->vma);
2120 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2121 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2123 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2124 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2125 return bfd_reloc_ok;
2128 static bfd_reloc_status_type
2129 ppc_elf_unhandled_reloc (bfd *abfd,
2130 arelent *reloc_entry,
2133 asection *input_section,
2135 char **error_message)
2137 /* If this is a relocatable link (output_bfd test tells us), just
2138 call the generic function. Any adjustment will be done at final
2140 if (output_bfd != NULL)
2141 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2142 input_section, output_bfd, error_message);
2144 if (error_message != NULL)
2146 static char buf[60];
2147 sprintf (buf, _("generic linker can't handle %s"),
2148 reloc_entry->howto->name);
2149 *error_message = buf;
2151 return bfd_reloc_dangerous;
2154 /* Sections created by the linker. */
2156 typedef struct elf_linker_section
2158 /* Pointer to the bfd section. */
2162 /* Associated bss section name. */
2163 const char *bss_name;
2164 /* Associated symbol name. */
2165 const char *sym_name;
2166 /* Associated symbol. */
2167 struct elf_link_hash_entry *sym;
2168 } elf_linker_section_t;
2170 /* Linked list of allocated pointer entries. This hangs off of the
2171 symbol lists, and provides allows us to return different pointers,
2172 based on different addend's. */
2174 typedef struct elf_linker_section_pointers
2176 /* next allocated pointer for this symbol */
2177 struct elf_linker_section_pointers *next;
2178 /* offset of pointer from beginning of section */
2182 /* which linker section this is */
2183 elf_linker_section_t *lsect;
2184 } elf_linker_section_pointers_t;
2186 struct ppc_elf_obj_tdata
2188 struct elf_obj_tdata elf;
2190 /* A mapping from local symbols to offsets into the various linker
2191 sections added. This is index by the symbol index. */
2192 elf_linker_section_pointers_t **linker_section_pointers;
2194 /* Flags used to auto-detect plt type. */
2195 unsigned int makes_plt_call : 1;
2196 unsigned int has_rel16 : 1;
2199 #define ppc_elf_tdata(bfd) \
2200 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2202 #define elf_local_ptr_offsets(bfd) \
2203 (ppc_elf_tdata (bfd)->linker_section_pointers)
2205 #define is_ppc_elf(bfd) \
2206 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2207 && elf_object_id (bfd) == PPC32_ELF_DATA)
2209 /* Override the generic function because we store some extras. */
2212 ppc_elf_mkobject (bfd *abfd)
2214 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2218 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2221 _bfd_elf_ppc_set_arch (bfd *abfd)
2223 unsigned long mach = 0;
2225 unsigned char *contents;
2227 if (abfd->arch_info->bits_per_word == 32
2228 && bfd_big_endian (abfd))
2231 for (s = abfd->sections; s != NULL; s = s->next)
2232 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2235 mach = bfd_mach_ppc_vle;
2240 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2241 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2243 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2246 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2248 unsigned int val = bfd_get_32 (abfd, contents + i);
2251 case PPC_APUINFO_PMR:
2252 case PPC_APUINFO_RFMCI:
2254 mach = bfd_mach_ppc_titan;
2257 case PPC_APUINFO_ISEL:
2258 case PPC_APUINFO_CACHELCK:
2259 if (mach == bfd_mach_ppc_titan)
2260 mach = bfd_mach_ppc_e500mc;
2263 case PPC_APUINFO_SPE:
2264 case PPC_APUINFO_EFS:
2265 case PPC_APUINFO_BRLOCK:
2266 if (mach != bfd_mach_ppc_vle)
2267 mach = bfd_mach_ppc_e500;
2270 case PPC_APUINFO_VLE:
2271 mach = bfd_mach_ppc_vle;
2282 if (mach != 0 && mach != -1ul)
2284 const bfd_arch_info_type *arch;
2286 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2287 if (arch->mach == mach)
2289 abfd->arch_info = arch;
2296 /* Fix bad default arch selected for a 32 bit input bfd when the
2297 default is 64 bit. Also select arch based on apuinfo. */
2300 ppc_elf_object_p (bfd *abfd)
2302 if (!abfd->arch_info->the_default)
2305 if (abfd->arch_info->bits_per_word == 64)
2307 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2309 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2311 /* Relies on arch after 64 bit default being 32 bit default. */
2312 abfd->arch_info = abfd->arch_info->next;
2313 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2316 return _bfd_elf_ppc_set_arch (abfd);
2319 /* Function to set whether a module needs the -mrelocatable bit set. */
2322 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2324 BFD_ASSERT (!elf_flags_init (abfd)
2325 || elf_elfheader (abfd)->e_flags == flags);
2327 elf_elfheader (abfd)->e_flags = flags;
2328 elf_flags_init (abfd) = TRUE;
2332 /* Support for core dump NOTE sections. */
2335 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2340 switch (note->descsz)
2345 case 268: /* Linux/PPC. */
2347 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2350 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2359 /* Make a ".reg/999" section. */
2360 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2361 size, note->descpos + offset);
2365 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2367 switch (note->descsz)
2372 case 128: /* Linux/PPC elf_prpsinfo. */
2373 elf_tdata (abfd)->core->pid
2374 = bfd_get_32 (abfd, note->descdata + 16);
2375 elf_tdata (abfd)->core->program
2376 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2377 elf_tdata (abfd)->core->command
2378 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2381 /* Note that for some reason, a spurious space is tacked
2382 onto the end of the args in some (at least one anyway)
2383 implementations, so strip it off if it exists. */
2386 char *command = elf_tdata (abfd)->core->command;
2387 int n = strlen (command);
2389 if (0 < n && command[n - 1] == ' ')
2390 command[n - 1] = '\0';
2397 elfcore_write_ppc_linux_prpsinfo32
2401 const struct elf_internal_linux_prpsinfo *prpsinfo)
2403 struct elf_external_ppc_linux_prpsinfo32 data;
2405 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2406 return elfcore_write_note (abfd, buf, bufsiz,
2407 "CORE", NT_PRPSINFO, &data, sizeof (data));
2411 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2423 va_start (ap, note_type);
2424 memset (data, 0, sizeof (data));
2425 strncpy (data + 32, va_arg (ap, const char *), 16);
2426 strncpy (data + 48, va_arg (ap, const char *), 80);
2428 return elfcore_write_note (abfd, buf, bufsiz,
2429 "CORE", note_type, data, sizeof (data));
2440 va_start (ap, note_type);
2441 memset (data, 0, 72);
2442 pid = va_arg (ap, long);
2443 bfd_put_32 (abfd, pid, data + 24);
2444 cursig = va_arg (ap, int);
2445 bfd_put_16 (abfd, cursig, data + 12);
2446 greg = va_arg (ap, const void *);
2447 memcpy (data + 72, greg, 192);
2448 memset (data + 264, 0, 4);
2450 return elfcore_write_note (abfd, buf, bufsiz,
2451 "CORE", note_type, data, sizeof (data));
2457 ppc_elf_lookup_section_flags (char *flag_name)
2460 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2466 /* Return address for Ith PLT stub in section PLT, for relocation REL
2467 or (bfd_vma) -1 if it should not be included. */
2470 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2471 const asection *plt ATTRIBUTE_UNUSED,
2474 return rel->address;
2477 /* Handle a PowerPC specific section when reading an object file. This
2478 is called when bfd_section_from_shdr finds a section with an unknown
2482 ppc_elf_section_from_shdr (bfd *abfd,
2483 Elf_Internal_Shdr *hdr,
2490 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2493 newsect = hdr->bfd_section;
2494 flags = bfd_get_section_flags (abfd, newsect);
2495 if (hdr->sh_flags & SHF_EXCLUDE)
2496 flags |= SEC_EXCLUDE;
2498 if (hdr->sh_type == SHT_ORDERED)
2499 flags |= SEC_SORT_ENTRIES;
2501 bfd_set_section_flags (abfd, newsect, flags);
2505 /* Set up any other section flags and such that may be necessary. */
2508 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2509 Elf_Internal_Shdr *shdr,
2512 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2513 shdr->sh_type = SHT_ORDERED;
2518 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2519 need to bump up the number of section headers. */
2522 ppc_elf_additional_program_headers (bfd *abfd,
2523 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2528 s = bfd_get_section_by_name (abfd, ".sbss2");
2529 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2532 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2533 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2539 /* Modify the segment map for VLE executables. */
2542 ppc_elf_modify_segment_map (bfd *abfd,
2543 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2545 struct elf_segment_map *m;
2547 /* At this point in the link, output sections have already been sorted by
2548 LMA and assigned to segments. All that is left to do is to ensure
2549 there is no mixing of VLE & non-VLE sections in a text segment.
2550 If we find that case, we split the segment.
2551 We maintain the original output section order. */
2553 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2555 struct elf_segment_map *n;
2558 unsigned int p_flags;
2560 if (m->p_type != PT_LOAD || m->count == 0)
2563 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2565 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2567 if ((m->sections[j]->flags & SEC_CODE) != 0)
2570 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2571 p_flags |= PF_PPC_VLE;
2576 while (++j != m->count)
2578 unsigned int p_flags1 = PF_R;
2580 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2582 if ((m->sections[j]->flags & SEC_CODE) != 0)
2585 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2586 p_flags1 |= PF_PPC_VLE;
2587 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2590 p_flags |= p_flags1;
2592 /* If we're splitting a segment which originally contained rw
2593 sections then those sections might now only be in one of the
2594 two parts. So always set p_flags if splitting, even if we
2595 are being called for objcopy with p_flags_valid set. */
2596 if (j != m->count || !m->p_flags_valid)
2598 m->p_flags_valid = 1;
2599 m->p_flags = p_flags;
2604 /* Sections 0..j-1 stay in this (current) segment,
2605 the remainder are put in a new segment.
2606 The scan resumes with the new segment. */
2608 amt = sizeof (struct elf_segment_map);
2609 amt += (m->count - j - 1) * sizeof (asection *);
2610 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2614 n->p_type = PT_LOAD;
2615 n->count = m->count - j;
2616 for (k = 0; k < n->count; ++k)
2617 n->sections[k] = m->sections[j + k];
2619 m->p_size_valid = 0;
2627 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2628 .PPC.EMB.sbss0 a normal section, and not a bss section so
2629 that the linker doesn't crater when trying to make more than
2632 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2634 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2635 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2636 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2637 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2638 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2639 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2640 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2641 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2642 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2643 { NULL, 0, 0, 0, 0 }
2646 /* This is what we want for new plt/got. */
2647 static struct bfd_elf_special_section ppc_alt_plt =
2648 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2650 static const struct bfd_elf_special_section *
2651 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2653 const struct bfd_elf_special_section *ssect;
2655 /* See if this is one of the special sections. */
2656 if (sec->name == NULL)
2659 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2663 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2664 ssect = &ppc_alt_plt;
2668 return _bfd_elf_get_sec_type_attr (abfd, sec);
2671 /* Very simple linked list structure for recording apuinfo values. */
2672 typedef struct apuinfo_list
2674 struct apuinfo_list *next;
2675 unsigned long value;
2679 static apuinfo_list *head;
2680 static bfd_boolean apuinfo_set;
2683 apuinfo_list_init (void)
2686 apuinfo_set = FALSE;
2690 apuinfo_list_add (unsigned long value)
2692 apuinfo_list *entry = head;
2694 while (entry != NULL)
2696 if (entry->value == value)
2698 entry = entry->next;
2701 entry = bfd_malloc (sizeof (* entry));
2705 entry->value = value;
2711 apuinfo_list_length (void)
2713 apuinfo_list *entry;
2714 unsigned long count;
2716 for (entry = head, count = 0;
2718 entry = entry->next)
2724 static inline unsigned long
2725 apuinfo_list_element (unsigned long number)
2727 apuinfo_list * entry;
2731 entry = entry->next)
2734 return entry ? entry->value : 0;
2738 apuinfo_list_finish (void)
2740 apuinfo_list *entry;
2742 for (entry = head; entry;)
2744 apuinfo_list *next = entry->next;
2752 /* Scan the input BFDs and create a linked list of
2753 the APUinfo values that will need to be emitted. */
2756 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2760 char *buffer = NULL;
2761 bfd_size_type largest_input_size = 0;
2763 unsigned long length;
2764 const char *error_message = NULL;
2766 if (link_info == NULL)
2769 apuinfo_list_init ();
2771 /* Read in the input sections contents. */
2772 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2774 unsigned long datum;
2776 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2780 /* xgettext:c-format */
2781 error_message = _("corrupt %s section in %B");
2782 length = asec->size;
2787 if (largest_input_size < asec->size)
2791 largest_input_size = asec->size;
2792 buffer = bfd_malloc (largest_input_size);
2797 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2798 || (bfd_bread (buffer, length, ibfd) != length))
2800 /* xgettext:c-format */
2801 error_message = _("unable to read in %s section from %B");
2805 /* Verify the contents of the header. Note - we have to
2806 extract the values this way in order to allow for a
2807 host whose endian-ness is different from the target. */
2808 datum = bfd_get_32 (ibfd, buffer);
2809 if (datum != sizeof APUINFO_LABEL)
2812 datum = bfd_get_32 (ibfd, buffer + 8);
2816 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2819 /* Get the number of bytes used for apuinfo entries. */
2820 datum = bfd_get_32 (ibfd, buffer + 4);
2821 if (datum + 20 != length)
2824 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2825 for (i = 0; i < datum; i += 4)
2826 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2829 error_message = NULL;
2833 /* Compute the size of the output section. */
2834 unsigned num_entries = apuinfo_list_length ();
2836 /* Set the output section size, if it exists. */
2837 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2839 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2842 /* xgettext:c-format */
2843 error_message = _("warning: unable to set size of %s section in %B");
2852 _bfd_error_handler (error_message, ibfd, APUINFO_SECTION_NAME);
2855 /* Prevent the output section from accumulating the input sections'
2856 contents. We have already stored this in our linked list structure. */
2859 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2860 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2862 bfd_byte *contents ATTRIBUTE_UNUSED)
2864 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2867 /* Finally we can generate the output section. */
2870 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2875 unsigned num_entries;
2876 bfd_size_type length;
2878 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2885 length = asec->size;
2889 buffer = bfd_malloc (length);
2893 (_("failed to allocate space for new APUinfo section."));
2897 /* Create the apuinfo header. */
2898 num_entries = apuinfo_list_length ();
2899 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2900 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2901 bfd_put_32 (abfd, 0x2, buffer + 8);
2902 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2905 for (i = 0; i < num_entries; i++)
2907 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2911 if (length != asec->size)
2912 _bfd_error_handler (_("failed to compute new APUinfo section."));
2914 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2915 _bfd_error_handler (_("failed to install new APUinfo section."));
2919 apuinfo_list_finish ();
2923 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2925 bfd_byte buf[GLINK_ENTRY_SIZE];
2927 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2930 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2931 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2932 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2933 && bfd_get_32 (abfd, buf + 12) == BCTR);
2937 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2939 bfd_vma vma = *(bfd_vma *) ptr;
2940 return ((section->flags & SEC_ALLOC) != 0
2941 && section->vma <= vma
2942 && vma < section->vma + section->size);
2946 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2947 long dynsymcount, asymbol **dynsyms,
2950 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2951 asection *plt, *relplt, *dynamic, *glink;
2952 bfd_vma glink_vma = 0;
2953 bfd_vma resolv_vma = 0;
2964 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2967 if (dynsymcount <= 0)
2970 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2974 plt = bfd_get_section_by_name (abfd, ".plt");
2978 /* Call common code to handle old-style executable PLTs. */
2979 if (elf_section_flags (plt) & SHF_EXECINSTR)
2980 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2981 dynsymcount, dynsyms, ret);
2983 /* If this object was prelinked, the prelinker stored the address
2984 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2985 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2986 if (dynamic != NULL)
2988 bfd_byte *dynbuf, *extdyn, *extdynend;
2990 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2992 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2995 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2996 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2999 extdynend = extdyn + dynamic->size;
3000 for (; extdyn < extdynend; extdyn += extdynsize)
3002 Elf_Internal_Dyn dyn;
3003 (*swap_dyn_in) (abfd, extdyn, &dyn);
3005 if (dyn.d_tag == DT_NULL)
3008 if (dyn.d_tag == DT_PPC_GOT)
3010 unsigned int g_o_t = dyn.d_un.d_val;
3011 asection *got = bfd_get_section_by_name (abfd, ".got");
3013 && bfd_get_section_contents (abfd, got, buf,
3014 g_o_t - got->vma + 4, 4))
3015 glink_vma = bfd_get_32 (abfd, buf);
3022 /* Otherwise we read the first plt entry. */
3025 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3026 glink_vma = bfd_get_32 (abfd, buf);
3032 /* The .glink section usually does not survive the final
3033 link; search for the section (usually .text) where the
3034 glink stubs now reside. */
3035 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3039 /* Determine glink PLT resolver by reading the relative branch
3040 from the first glink stub. */
3041 if (bfd_get_section_contents (abfd, glink, buf,
3042 glink_vma - glink->vma, 4))
3044 unsigned int insn = bfd_get_32 (abfd, buf);
3046 /* The first glink stub may either branch to the resolver ... */
3048 if ((insn & ~0x3fffffc) == 0)
3049 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3051 /* ... or fall through a bunch of NOPs. */
3052 else if ((insn ^ B ^ NOP) == 0)
3054 bfd_get_section_contents (abfd, glink, buf,
3055 glink_vma - glink->vma + i, 4);
3057 if (bfd_get_32 (abfd, buf) != NOP)
3059 resolv_vma = glink_vma + i;
3064 count = relplt->size / sizeof (Elf32_External_Rela);
3065 /* If the stubs are those for -shared/-pie then we might have
3066 multiple stubs for each plt entry. If that is the case then
3067 there is no way to associate stubs with their plt entries short
3068 of figuring out the GOT pointer value used in the stub. */
3069 if (!is_nonpic_glink_stub (abfd, glink,
3070 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3073 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3074 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3077 size = count * sizeof (asymbol);
3078 p = relplt->relocation;
3079 for (i = 0; i < count; i++, p++)
3081 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3083 size += sizeof ("+0x") - 1 + 8;
3086 size += sizeof (asymbol) + sizeof ("__glink");
3089 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3091 s = *ret = bfd_malloc (size);
3095 stub_vma = glink_vma;
3096 names = (char *) (s + count + 1 + (resolv_vma != 0));
3097 p = relplt->relocation + count - 1;
3098 for (i = 0; i < count; i++)
3102 *s = **p->sym_ptr_ptr;
3103 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3104 we are defining a symbol, ensure one of them is set. */
3105 if ((s->flags & BSF_LOCAL) == 0)
3106 s->flags |= BSF_GLOBAL;
3107 s->flags |= BSF_SYNTHETIC;
3110 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3112 s->value = stub_vma - glink->vma;
3115 len = strlen ((*p->sym_ptr_ptr)->name);
3116 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3120 memcpy (names, "+0x", sizeof ("+0x") - 1);
3121 names += sizeof ("+0x") - 1;
3122 bfd_sprintf_vma (abfd, names, p->addend);
3123 names += strlen (names);
3125 memcpy (names, "@plt", sizeof ("@plt"));
3126 names += sizeof ("@plt");
3131 /* Add a symbol at the start of the glink branch table. */
3132 memset (s, 0, sizeof *s);
3134 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3136 s->value = glink_vma - glink->vma;
3138 memcpy (names, "__glink", sizeof ("__glink"));
3139 names += sizeof ("__glink");
3145 /* Add a symbol for the glink PLT resolver. */
3146 memset (s, 0, sizeof *s);
3148 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3150 s->value = resolv_vma - glink->vma;
3152 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3153 names += sizeof ("__glink_PLTresolve");
3161 /* The following functions are specific to the ELF linker, while
3162 functions above are used generally. They appear in this file more
3163 or less in the order in which they are called. eg.
3164 ppc_elf_check_relocs is called early in the link process,
3165 ppc_elf_finish_dynamic_sections is one of the last functions
3168 /* Track PLT entries needed for a given symbol. We might need more
3169 than one glink entry per symbol when generating a pic binary. */
3172 struct plt_entry *next;
3174 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3175 This field stores the offset into .got2 used to initialise the
3176 GOT pointer reg. It will always be at least 32768. (Current
3177 gcc always uses an offset of 32768, but ld -r will pack .got2
3178 sections together resulting in larger offsets). */
3181 /* The .got2 section. */
3184 /* PLT refcount or offset. */
3187 bfd_signed_vma refcount;
3191 /* .glink stub offset. */
3192 bfd_vma glink_offset;
3195 /* Of those relocs that might be copied as dynamic relocs, this function
3196 selects those that must be copied when linking a shared library,
3197 even when the symbol is local. */
3200 must_be_dyn_reloc (struct bfd_link_info *info,
3201 enum elf_ppc_reloc_type r_type)
3210 case R_PPC_REL14_BRTAKEN:
3211 case R_PPC_REL14_BRNTAKEN:
3217 case R_PPC_TPREL16_LO:
3218 case R_PPC_TPREL16_HI:
3219 case R_PPC_TPREL16_HA:
3220 return !bfd_link_executable (info);
3224 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3225 copying dynamic variables from a shared lib into an app's dynbss
3226 section, and instead use a dynamic relocation to point into the
3228 #define ELIMINATE_COPY_RELOCS 1
3230 /* Used to track dynamic relocations for local symbols. */
3231 struct ppc_dyn_relocs
3233 struct ppc_dyn_relocs *next;
3235 /* The input section of the reloc. */
3238 /* Total number of relocs copied for the input section. */
3239 unsigned int count : 31;
3241 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3242 unsigned int ifunc : 1;
3245 /* PPC ELF linker hash entry. */
3247 struct ppc_elf_link_hash_entry
3249 struct elf_link_hash_entry elf;
3251 /* If this symbol is used in the linker created sections, the processor
3252 specific backend uses this field to map the field into the offset
3253 from the beginning of the section. */
3254 elf_linker_section_pointers_t *linker_section_pointer;
3256 /* Track dynamic relocs copied for this symbol. */
3257 struct elf_dyn_relocs *dyn_relocs;
3259 /* Contexts in which symbol is used in the GOT (or TOC).
3260 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3261 corresponding relocs are encountered during check_relocs.
3262 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3263 indicate the corresponding GOT entry type is not needed. */
3264 #define TLS_GD 1 /* GD reloc. */
3265 #define TLS_LD 2 /* LD reloc. */
3266 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3267 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3268 #define TLS_TLS 16 /* Any TLS reloc. */
3269 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3270 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3273 /* Nonzero if we have seen a small data relocation referring to this
3275 unsigned char has_sda_refs : 1;
3277 /* Flag use of given relocations. */
3278 unsigned char has_addr16_ha : 1;
3279 unsigned char has_addr16_lo : 1;
3282 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3284 /* PPC ELF linker hash table. */
3286 struct ppc_elf_link_hash_table
3288 struct elf_link_hash_table elf;
3290 /* Various options passed from the linker. */
3291 struct ppc_elf_params *params;
3293 /* Short-cuts to get to dynamic linker sections. */
3297 elf_linker_section_t sdata[2];
3299 asection *glink_eh_frame;
3301 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3304 /* Shortcut to __tls_get_addr. */
3305 struct elf_link_hash_entry *tls_get_addr;
3307 /* The bfd that forced an old-style PLT. */
3310 /* TLS local dynamic got entry handling. */
3312 bfd_signed_vma refcount;
3316 /* Offset of branch table to PltResolve function in glink. */
3317 bfd_vma glink_pltresolve;
3319 /* Size of reserved GOT entries. */
3320 unsigned int got_header_size;
3321 /* Non-zero if allocating the header left a gap. */
3322 unsigned int got_gap;
3324 /* The type of PLT we have chosen to use. */
3325 enum ppc_elf_plt_type plt_type;
3327 /* True if the target system is VxWorks. */
3328 unsigned int is_vxworks:1;
3330 /* Whether there exist local gnu indirect function resolvers,
3331 referenced by dynamic relocations. */
3332 unsigned int local_ifunc_resolver:1;
3333 unsigned int maybe_local_ifunc_resolver:1;
3335 /* The size of PLT entries. */
3337 /* The distance between adjacent PLT slots. */
3339 /* The size of the first PLT entry. */
3340 int plt_initial_entry_size;
3342 /* Small local sym cache. */
3343 struct sym_cache sym_cache;
3346 /* Rename some of the generic section flags to better document how they
3347 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3349 /* Nonzero if this section has TLS related relocations. */
3350 #define has_tls_reloc sec_flg0
3352 /* Nonzero if this section has a call to __tls_get_addr. */
3353 #define has_tls_get_addr_call sec_flg1
3355 /* Get the PPC ELF linker hash table from a link_info structure. */
3357 #define ppc_elf_hash_table(p) \
3358 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3359 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3361 /* Create an entry in a PPC ELF linker hash table. */
3363 static struct bfd_hash_entry *
3364 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3365 struct bfd_hash_table *table,
3368 /* Allocate the structure if it has not already been allocated by a
3372 entry = bfd_hash_allocate (table,
3373 sizeof (struct ppc_elf_link_hash_entry));
3378 /* Call the allocation method of the superclass. */
3379 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3382 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3383 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3384 ppc_elf_hash_entry (entry)->tls_mask = 0;
3385 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3391 /* Create a PPC ELF linker hash table. */
3393 static struct bfd_link_hash_table *
3394 ppc_elf_link_hash_table_create (bfd *abfd)
3396 struct ppc_elf_link_hash_table *ret;
3397 static struct ppc_elf_params default_params
3398 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3400 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3404 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3405 ppc_elf_link_hash_newfunc,
3406 sizeof (struct ppc_elf_link_hash_entry),
3413 ret->elf.init_plt_refcount.refcount = 0;
3414 ret->elf.init_plt_refcount.glist = NULL;
3415 ret->elf.init_plt_offset.offset = 0;
3416 ret->elf.init_plt_offset.glist = NULL;
3418 ret->params = &default_params;
3420 ret->sdata[0].name = ".sdata";
3421 ret->sdata[0].sym_name = "_SDA_BASE_";
3422 ret->sdata[0].bss_name = ".sbss";
3424 ret->sdata[1].name = ".sdata2";
3425 ret->sdata[1].sym_name = "_SDA2_BASE_";
3426 ret->sdata[1].bss_name = ".sbss2";
3428 ret->plt_entry_size = 12;
3429 ret->plt_slot_size = 8;
3430 ret->plt_initial_entry_size = 72;
3432 return &ret->elf.root;
3435 /* Hook linker params into hash table. */
3438 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3440 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3443 htab->params = params;
3444 params->pagesize_p2 = bfd_log2 (params->pagesize);
3447 /* Create .got and the related sections. */
3450 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3452 struct ppc_elf_link_hash_table *htab;
3454 if (!_bfd_elf_create_got_section (abfd, info))
3457 htab = ppc_elf_hash_table (info);
3458 if (!htab->is_vxworks)
3460 /* The powerpc .got has a blrl instruction in it. Mark it
3462 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3463 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3464 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3471 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3472 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3473 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3476 ppc_elf_create_linker_section (bfd *abfd,
3477 struct bfd_link_info *info,
3479 elf_linker_section_t *lsect)
3483 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3484 | SEC_LINKER_CREATED);
3486 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3491 /* Define the sym on the first section of this name. */
3492 s = bfd_get_section_by_name (abfd, lsect->name);
3494 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3495 if (lsect->sym == NULL)
3497 lsect->sym->root.u.def.value = 0x8000;
3502 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3504 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3508 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3509 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3510 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3513 || !bfd_set_section_alignment (abfd, s,
3514 htab->params->ppc476_workaround ? 6 : 4))
3517 if (!info->no_ld_generated_unwind_info)
3519 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3520 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3521 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3522 htab->glink_eh_frame = s;
3524 || !bfd_set_section_alignment (abfd, s, 2))
3528 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3529 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3532 || !bfd_set_section_alignment (abfd, s, 4))
3535 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3536 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3537 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3538 htab->elf.irelplt = s;
3540 || ! bfd_set_section_alignment (abfd, s, 2))
3543 if (!ppc_elf_create_linker_section (abfd, info, 0,
3547 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3554 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3555 to output sections (just like _bfd_elf_create_dynamic_sections has
3556 to create .dynbss and .rela.bss). */
3559 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3561 struct ppc_elf_link_hash_table *htab;
3565 htab = ppc_elf_hash_table (info);
3567 if (htab->elf.sgot == NULL
3568 && !ppc_elf_create_got (abfd, info))
3571 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3574 if (htab->glink == NULL
3575 && !ppc_elf_create_glink (abfd, info))
3578 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3579 SEC_ALLOC | SEC_LINKER_CREATED);
3584 if (! bfd_link_pic (info))
3586 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3587 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3588 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3591 || ! bfd_set_section_alignment (abfd, s, 2))
3595 if (htab->is_vxworks
3596 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3600 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3601 if (htab->plt_type == PLT_VXWORKS)
3602 /* The VxWorks PLT is a loaded section with contents. */
3603 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3604 return bfd_set_section_flags (abfd, s, flags);
3607 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3610 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3611 struct elf_link_hash_entry *dir,
3612 struct elf_link_hash_entry *ind)
3614 struct ppc_elf_link_hash_entry *edir, *eind;
3616 edir = (struct ppc_elf_link_hash_entry *) dir;
3617 eind = (struct ppc_elf_link_hash_entry *) ind;
3619 edir->tls_mask |= eind->tls_mask;
3620 edir->has_sda_refs |= eind->has_sda_refs;
3622 /* If called to transfer flags for a weakdef during processing
3623 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3624 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3625 if (!(ELIMINATE_COPY_RELOCS
3626 && eind->elf.root.type != bfd_link_hash_indirect
3627 && edir->elf.dynamic_adjusted))
3628 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3630 if (edir->elf.versioned != versioned_hidden)
3631 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3632 edir->elf.ref_regular |= eind->elf.ref_regular;
3633 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3634 edir->elf.needs_plt |= eind->elf.needs_plt;
3635 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3637 if (eind->dyn_relocs != NULL)
3639 if (edir->dyn_relocs != NULL)
3641 struct elf_dyn_relocs **pp;
3642 struct elf_dyn_relocs *p;
3644 /* Add reloc counts against the indirect sym to the direct sym
3645 list. Merge any entries against the same section. */
3646 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3648 struct elf_dyn_relocs *q;
3650 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3651 if (q->sec == p->sec)
3653 q->pc_count += p->pc_count;
3654 q->count += p->count;
3661 *pp = edir->dyn_relocs;
3664 edir->dyn_relocs = eind->dyn_relocs;
3665 eind->dyn_relocs = NULL;
3668 /* If we were called to copy over info for a weak sym, that's all.
3669 You might think dyn_relocs need not be copied over; After all,
3670 both syms will be dynamic or both non-dynamic so we're just
3671 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3672 code in ppc_elf_adjust_dynamic_symbol needs to check for
3673 dyn_relocs in read-only sections, and it does so on what is the
3675 if (eind->elf.root.type != bfd_link_hash_indirect)
3678 /* Copy over the GOT refcount entries that we may have already seen to
3679 the symbol which just became indirect. */
3680 edir->elf.got.refcount += eind->elf.got.refcount;
3681 eind->elf.got.refcount = 0;
3683 /* And plt entries. */
3684 if (eind->elf.plt.plist != NULL)
3686 if (edir->elf.plt.plist != NULL)
3688 struct plt_entry **entp;
3689 struct plt_entry *ent;
3691 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3693 struct plt_entry *dent;
3695 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3696 if (dent->sec == ent->sec && dent->addend == ent->addend)
3698 dent->plt.refcount += ent->plt.refcount;
3705 *entp = edir->elf.plt.plist;
3708 edir->elf.plt.plist = eind->elf.plt.plist;
3709 eind->elf.plt.plist = NULL;
3712 if (eind->elf.dynindx != -1)
3714 if (edir->elf.dynindx != -1)
3715 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3716 edir->elf.dynstr_index);
3717 edir->elf.dynindx = eind->elf.dynindx;
3718 edir->elf.dynstr_index = eind->elf.dynstr_index;
3719 eind->elf.dynindx = -1;
3720 eind->elf.dynstr_index = 0;
3724 /* Hook called by the linker routine which adds symbols from an object
3725 file. We use it to put .comm items in .sbss, and not .bss. */
3728 ppc_elf_add_symbol_hook (bfd *abfd,
3729 struct bfd_link_info *info,
3730 Elf_Internal_Sym *sym,
3731 const char **namep ATTRIBUTE_UNUSED,
3732 flagword *flagsp ATTRIBUTE_UNUSED,
3736 if (sym->st_shndx == SHN_COMMON
3737 && !bfd_link_relocatable (info)
3738 && is_ppc_elf (info->output_bfd)
3739 && sym->st_size <= elf_gp_size (abfd))
3741 /* Common symbols less than or equal to -G nn bytes are automatically
3743 struct ppc_elf_link_hash_table *htab;
3745 htab = ppc_elf_hash_table (info);
3746 if (htab->sbss == NULL)
3748 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3750 if (!htab->elf.dynobj)
3751 htab->elf.dynobj = abfd;
3753 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3756 if (htab->sbss == NULL)
3761 *valp = sym->st_size;
3764 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3765 && (abfd->flags & DYNAMIC) == 0
3766 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3767 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3772 /* Find a linker generated pointer with a given addend and type. */
3774 static elf_linker_section_pointers_t *
3775 elf_find_pointer_linker_section
3776 (elf_linker_section_pointers_t *linker_pointers,
3778 elf_linker_section_t *lsect)
3780 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3781 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3782 return linker_pointers;
3787 /* Allocate a pointer to live in a linker created section. */
3790 elf_allocate_pointer_linker_section (bfd *abfd,
3791 elf_linker_section_t *lsect,
3792 struct elf_link_hash_entry *h,
3793 const Elf_Internal_Rela *rel)
3795 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3796 elf_linker_section_pointers_t *linker_section_ptr;
3797 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3800 BFD_ASSERT (lsect != NULL);
3802 /* Is this a global symbol? */
3805 struct ppc_elf_link_hash_entry *eh;
3807 /* Has this symbol already been allocated? If so, our work is done. */
3808 eh = (struct ppc_elf_link_hash_entry *) h;
3809 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3814 ptr_linker_section_ptr = &eh->linker_section_pointer;
3818 BFD_ASSERT (is_ppc_elf (abfd));
3820 /* Allocation of a pointer to a local symbol. */
3821 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3823 /* Allocate a table to hold the local symbols if first time. */
3826 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3829 amt *= sizeof (elf_linker_section_pointers_t *);
3830 ptr = bfd_zalloc (abfd, amt);
3835 elf_local_ptr_offsets (abfd) = ptr;
3838 /* Has this symbol already been allocated? If so, our work is done. */
3839 if (elf_find_pointer_linker_section (ptr[r_symndx],
3844 ptr_linker_section_ptr = &ptr[r_symndx];
3847 /* Allocate space for a pointer in the linker section, and allocate
3848 a new pointer record from internal memory. */
3849 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3850 amt = sizeof (elf_linker_section_pointers_t);
3851 linker_section_ptr = bfd_alloc (abfd, amt);
3853 if (!linker_section_ptr)
3856 linker_section_ptr->next = *ptr_linker_section_ptr;
3857 linker_section_ptr->addend = rel->r_addend;
3858 linker_section_ptr->lsect = lsect;
3859 *ptr_linker_section_ptr = linker_section_ptr;
3861 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3863 linker_section_ptr->offset = lsect->section->size;
3864 lsect->section->size += 4;
3868 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3869 lsect->name, (long) linker_section_ptr->offset,
3870 (long) lsect->section->size);
3876 static struct plt_entry **
3877 update_local_sym_info (bfd *abfd,
3878 Elf_Internal_Shdr *symtab_hdr,
3879 unsigned long r_symndx,
3882 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3883 struct plt_entry **local_plt;
3884 char *local_got_tls_masks;
3886 if (local_got_refcounts == NULL)
3888 bfd_size_type size = symtab_hdr->sh_info;
3890 size *= (sizeof (*local_got_refcounts)
3891 + sizeof (*local_plt)
3892 + sizeof (*local_got_tls_masks));
3893 local_got_refcounts = bfd_zalloc (abfd, size);
3894 if (local_got_refcounts == NULL)
3896 elf_local_got_refcounts (abfd) = local_got_refcounts;
3899 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3900 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3901 local_got_tls_masks[r_symndx] |= tls_type;
3902 if (tls_type != PLT_IFUNC)
3903 local_got_refcounts[r_symndx] += 1;
3904 return local_plt + r_symndx;
3908 update_plt_info (bfd *abfd, struct plt_entry **plist,
3909 asection *sec, bfd_vma addend)
3911 struct plt_entry *ent;
3915 for (ent = *plist; ent != NULL; ent = ent->next)
3916 if (ent->sec == sec && ent->addend == addend)
3920 bfd_size_type amt = sizeof (*ent);
3921 ent = bfd_alloc (abfd, amt);
3926 ent->addend = addend;
3927 ent->plt.refcount = 0;
3930 ent->plt.refcount += 1;
3934 static struct plt_entry *
3935 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3937 struct plt_entry *ent;
3941 for (ent = *plist; ent != NULL; ent = ent->next)
3942 if (ent->sec == sec && ent->addend == addend)
3948 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3950 return (r_type == R_PPC_PLTREL24
3951 || r_type == R_PPC_LOCAL24PC
3952 || r_type == R_PPC_REL24
3953 || r_type == R_PPC_REL14
3954 || r_type == R_PPC_REL14_BRTAKEN
3955 || r_type == R_PPC_REL14_BRNTAKEN
3956 || r_type == R_PPC_ADDR24
3957 || r_type == R_PPC_ADDR14
3958 || r_type == R_PPC_ADDR14_BRTAKEN
3959 || r_type == R_PPC_ADDR14_BRNTAKEN
3960 || r_type == R_PPC_VLE_REL24);
3964 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3967 /* xgettext:c-format */
3968 (_("%B: relocation %s cannot be used when making a shared object"),
3970 ppc_elf_howto_table[r_type]->name);
3971 bfd_set_error (bfd_error_bad_value);
3974 /* Look through the relocs for a section during the first phase, and
3975 allocate space in the global offset table or procedure linkage
3979 ppc_elf_check_relocs (bfd *abfd,
3980 struct bfd_link_info *info,
3982 const Elf_Internal_Rela *relocs)
3984 struct ppc_elf_link_hash_table *htab;
3985 Elf_Internal_Shdr *symtab_hdr;
3986 struct elf_link_hash_entry **sym_hashes;
3987 const Elf_Internal_Rela *rel;
3988 const Elf_Internal_Rela *rel_end;
3989 asection *got2, *sreloc;
3990 struct elf_link_hash_entry *tga;
3992 if (bfd_link_relocatable (info))
3995 /* Don't do anything special with non-loaded, non-alloced sections.
3996 In particular, any relocs in such sections should not affect GOT
3997 and PLT reference counting (ie. we don't allow them to create GOT
3998 or PLT entries), there's no possibility or desire to optimize TLS
3999 relocs, and there's not much point in propagating relocs to shared
4000 libs that the dynamic linker won't relocate. */
4001 if ((sec->flags & SEC_ALLOC) == 0)
4005 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
4009 BFD_ASSERT (is_ppc_elf (abfd));
4011 /* Initialize howto table if not already done. */
4012 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4013 ppc_elf_howto_init ();
4015 htab = ppc_elf_hash_table (info);
4016 if (htab->glink == NULL)
4018 if (htab->elf.dynobj == NULL)
4019 htab->elf.dynobj = abfd;
4020 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4023 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4024 FALSE, FALSE, TRUE);
4025 symtab_hdr = &elf_symtab_hdr (abfd);
4026 sym_hashes = elf_sym_hashes (abfd);
4027 got2 = bfd_get_section_by_name (abfd, ".got2");
4030 rel_end = relocs + sec->reloc_count;
4031 for (rel = relocs; rel < rel_end; rel++)
4033 unsigned long r_symndx;
4034 enum elf_ppc_reloc_type r_type;
4035 struct elf_link_hash_entry *h;
4037 struct plt_entry **ifunc;
4039 r_symndx = ELF32_R_SYM (rel->r_info);
4040 if (r_symndx < symtab_hdr->sh_info)
4044 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4045 while (h->root.type == bfd_link_hash_indirect
4046 || h->root.type == bfd_link_hash_warning)
4047 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4049 /* PR15323, ref flags aren't set for references in the same
4051 h->root.non_ir_ref = 1;
4054 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4055 This shows up in particular in an R_PPC_ADDR32 in the eabi
4058 && htab->elf.sgot == NULL
4059 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4061 if (htab->elf.dynobj == NULL)
4062 htab->elf.dynobj = abfd;
4063 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4065 BFD_ASSERT (h == htab->elf.hgot);
4069 r_type = ELF32_R_TYPE (rel->r_info);
4071 if (h == NULL && !htab->is_vxworks)
4073 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4078 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4080 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4081 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4086 /* STT_GNU_IFUNC symbols must have a PLT entry;
4087 In a non-pie executable even when there are
4089 if (!bfd_link_pic (info)
4090 || is_branch_reloc (r_type))
4093 if (r_type == R_PPC_PLTREL24)
4095 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4096 if (bfd_link_pic (info))
4097 addend = rel->r_addend;
4099 if (!update_plt_info (abfd, ifunc, got2, addend))
4105 if (!htab->is_vxworks
4106 && is_branch_reloc (r_type)
4111 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4112 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4113 /* We have a new-style __tls_get_addr call with a marker
4117 /* Mark this section as having an old-style call. */
4118 sec->has_tls_get_addr_call = 1;
4125 /* These special tls relocs tie a call to __tls_get_addr with
4126 its parameter symbol. */
4129 case R_PPC_GOT_TLSLD16:
4130 case R_PPC_GOT_TLSLD16_LO:
4131 case R_PPC_GOT_TLSLD16_HI:
4132 case R_PPC_GOT_TLSLD16_HA:
4133 tls_type = TLS_TLS | TLS_LD;
4136 case R_PPC_GOT_TLSGD16:
4137 case R_PPC_GOT_TLSGD16_LO:
4138 case R_PPC_GOT_TLSGD16_HI:
4139 case R_PPC_GOT_TLSGD16_HA:
4140 tls_type = TLS_TLS | TLS_GD;
4143 case R_PPC_GOT_TPREL16:
4144 case R_PPC_GOT_TPREL16_LO:
4145 case R_PPC_GOT_TPREL16_HI:
4146 case R_PPC_GOT_TPREL16_HA:
4147 if (bfd_link_pic (info))
4148 info->flags |= DF_STATIC_TLS;
4149 tls_type = TLS_TLS | TLS_TPREL;
4152 case R_PPC_GOT_DTPREL16:
4153 case R_PPC_GOT_DTPREL16_LO:
4154 case R_PPC_GOT_DTPREL16_HI:
4155 case R_PPC_GOT_DTPREL16_HA:
4156 tls_type = TLS_TLS | TLS_DTPREL;
4158 sec->has_tls_reloc = 1;
4161 /* GOT16 relocations */
4163 case R_PPC_GOT16_LO:
4164 case R_PPC_GOT16_HI:
4165 case R_PPC_GOT16_HA:
4166 /* This symbol requires a global offset table entry. */
4167 if (htab->elf.sgot == NULL)
4169 if (htab->elf.dynobj == NULL)
4170 htab->elf.dynobj = abfd;
4171 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4176 h->got.refcount += 1;
4177 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4180 /* This is a global offset table entry for a local symbol. */
4181 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4184 /* We may also need a plt entry if the symbol turns out to be
4186 if (h != NULL && !bfd_link_pic (info))
4188 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4193 /* Indirect .sdata relocation. */
4194 case R_PPC_EMB_SDAI16:
4195 if (bfd_link_pic (info))
4197 bad_shared_reloc (abfd, r_type);
4200 htab->sdata[0].sym->ref_regular = 1;
4201 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4206 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4207 h->non_got_ref = TRUE;
4211 /* Indirect .sdata2 relocation. */
4212 case R_PPC_EMB_SDA2I16:
4213 if (bfd_link_pic (info))
4215 bad_shared_reloc (abfd, r_type);
4218 htab->sdata[1].sym->ref_regular = 1;
4219 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4224 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4225 h->non_got_ref = TRUE;
4229 case R_PPC_SDAREL16:
4230 htab->sdata[0].sym->ref_regular = 1;
4233 case R_PPC_VLE_SDAREL_LO16A:
4234 case R_PPC_VLE_SDAREL_LO16D:
4235 case R_PPC_VLE_SDAREL_HI16A:
4236 case R_PPC_VLE_SDAREL_HI16D:
4237 case R_PPC_VLE_SDAREL_HA16A:
4238 case R_PPC_VLE_SDAREL_HA16D:
4241 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4242 h->non_got_ref = TRUE;
4246 case R_PPC_VLE_REL8:
4247 case R_PPC_VLE_REL15:
4248 case R_PPC_VLE_REL24:
4249 case R_PPC_VLE_LO16A:
4250 case R_PPC_VLE_LO16D:
4251 case R_PPC_VLE_HI16A:
4252 case R_PPC_VLE_HI16D:
4253 case R_PPC_VLE_HA16A:
4254 case R_PPC_VLE_HA16D:
4257 case R_PPC_EMB_SDA2REL:
4258 if (bfd_link_pic (info))
4260 bad_shared_reloc (abfd, r_type);
4263 htab->sdata[1].sym->ref_regular = 1;
4266 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4267 h->non_got_ref = TRUE;
4271 case R_PPC_VLE_SDA21_LO:
4272 case R_PPC_VLE_SDA21:
4273 case R_PPC_EMB_SDA21:
4274 case R_PPC_EMB_RELSDA:
4275 if (bfd_link_pic (info))
4277 bad_shared_reloc (abfd, r_type);
4282 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4283 h->non_got_ref = TRUE;
4287 case R_PPC_EMB_NADDR32:
4288 case R_PPC_EMB_NADDR16:
4289 case R_PPC_EMB_NADDR16_LO:
4290 case R_PPC_EMB_NADDR16_HI:
4291 case R_PPC_EMB_NADDR16_HA:
4292 if (bfd_link_pic (info))
4294 bad_shared_reloc (abfd, r_type);
4298 h->non_got_ref = TRUE;
4301 case R_PPC_PLTREL24:
4306 case R_PPC_PLTREL32:
4307 case R_PPC_PLT16_LO:
4308 case R_PPC_PLT16_HI:
4309 case R_PPC_PLT16_HA:
4311 fprintf (stderr, "Reloc requires a PLT entry\n");
4313 /* This symbol requires a procedure linkage table entry. */
4318 /* It does not make sense to have a procedure linkage
4319 table entry for a non-ifunc local symbol. */
4320 info->callbacks->einfo
4321 /* xgettext:c-format */
4322 (_("%H: %s reloc against local symbol\n"),
4323 abfd, sec, rel->r_offset,
4324 ppc_elf_howto_table[r_type]->name);
4325 bfd_set_error (bfd_error_bad_value);
4333 if (r_type == R_PPC_PLTREL24)
4335 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4336 if (bfd_link_pic (info))
4337 addend = rel->r_addend;
4340 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4345 /* The following relocations don't need to propagate the
4346 relocation if linking a shared object since they are
4347 section relative. */
4349 case R_PPC_SECTOFF_LO:
4350 case R_PPC_SECTOFF_HI:
4351 case R_PPC_SECTOFF_HA:
4352 case R_PPC_DTPREL16:
4353 case R_PPC_DTPREL16_LO:
4354 case R_PPC_DTPREL16_HI:
4355 case R_PPC_DTPREL16_HA:
4360 case R_PPC_REL16_LO:
4361 case R_PPC_REL16_HI:
4362 case R_PPC_REL16_HA:
4363 case R_PPC_REL16DX_HA:
4364 ppc_elf_tdata (abfd)->has_rel16 = 1;
4367 /* These are just markers. */
4369 case R_PPC_EMB_MRKREF:
4373 case R_PPC_RELAX_PLT:
4374 case R_PPC_RELAX_PLTREL24:
4378 /* These should only appear in dynamic objects. */
4380 case R_PPC_GLOB_DAT:
4381 case R_PPC_JMP_SLOT:
4382 case R_PPC_RELATIVE:
4383 case R_PPC_IRELATIVE:
4386 /* These aren't handled yet. We'll report an error later. */
4388 case R_PPC_EMB_RELSEC16:
4389 case R_PPC_EMB_RELST_LO:
4390 case R_PPC_EMB_RELST_HI:
4391 case R_PPC_EMB_RELST_HA:
4392 case R_PPC_EMB_BIT_FLD:
4395 /* This refers only to functions defined in the shared library. */
4396 case R_PPC_LOCAL24PC:
4397 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4399 htab->plt_type = PLT_OLD;
4400 htab->old_bfd = abfd;
4402 if (h != NULL && h->type == STT_GNU_IFUNC)
4405 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4410 /* This relocation describes the C++ object vtable hierarchy.
4411 Reconstruct it for later use during GC. */
4412 case R_PPC_GNU_VTINHERIT:
4413 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4417 /* This relocation describes which C++ vtable entries are actually
4418 used. Record for later use during GC. */
4419 case R_PPC_GNU_VTENTRY:
4420 BFD_ASSERT (h != NULL);
4422 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4426 /* We shouldn't really be seeing these. */
4429 case R_PPC_TPREL16_LO:
4430 case R_PPC_TPREL16_HI:
4431 case R_PPC_TPREL16_HA:
4432 if (bfd_link_pic (info))
4433 info->flags |= DF_STATIC_TLS;
4437 case R_PPC_DTPMOD32:
4438 case R_PPC_DTPREL32:
4444 && (sec->flags & SEC_CODE) != 0
4445 && bfd_link_pic (info)
4446 && htab->plt_type == PLT_UNSET)
4448 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4449 the start of a function, which assembles to a REL32
4450 reference to .got2. If we detect one of these, then
4451 force the old PLT layout because the linker cannot
4452 reliably deduce the GOT pointer value needed for
4455 Elf_Internal_Sym *isym;
4457 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4462 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4465 htab->plt_type = PLT_OLD;
4466 htab->old_bfd = abfd;
4469 if (h == NULL || h == htab->elf.hgot)
4475 case R_PPC_ADDR16_LO:
4476 case R_PPC_ADDR16_HI:
4477 case R_PPC_ADDR16_HA:
4480 if (h != NULL && !bfd_link_pic (info))
4482 /* We may need a plt entry if the symbol turns out to be
4483 a function defined in a dynamic object. */
4484 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4487 /* We may need a copy reloc too. */
4489 h->pointer_equality_needed = 1;
4490 if (r_type == R_PPC_ADDR16_HA)
4491 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4492 if (r_type == R_PPC_ADDR16_LO)
4493 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4499 case R_PPC_REL14_BRTAKEN:
4500 case R_PPC_REL14_BRNTAKEN:
4503 if (h == htab->elf.hgot)
4505 if (htab->plt_type == PLT_UNSET)
4507 htab->plt_type = PLT_OLD;
4508 htab->old_bfd = abfd;
4516 case R_PPC_ADDR14_BRTAKEN:
4517 case R_PPC_ADDR14_BRNTAKEN:
4518 if (h != NULL && !bfd_link_pic (info))
4520 /* We may need a plt entry if the symbol turns out to be
4521 a function defined in a dynamic object. */
4523 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4529 /* If we are creating a shared library, and this is a reloc
4530 against a global symbol, or a non PC relative reloc
4531 against a local symbol, then we need to copy the reloc
4532 into the shared library. However, if we are linking with
4533 -Bsymbolic, we do not need to copy a reloc against a
4534 global symbol which is defined in an object we are
4535 including in the link (i.e., DEF_REGULAR is set). At
4536 this point we have not seen all the input files, so it is
4537 possible that DEF_REGULAR is not set now but will be set
4538 later (it is never cleared). In case of a weak definition,
4539 DEF_REGULAR may be cleared later by a strong definition in
4540 a shared library. We account for that possibility below by
4541 storing information in the dyn_relocs field of the hash
4542 table entry. A similar situation occurs when creating
4543 shared libraries and symbol visibility changes render the
4546 If on the other hand, we are creating an executable, we
4547 may need to keep relocations for symbols satisfied by a
4548 dynamic library if we manage to avoid copy relocs for the
4550 if ((bfd_link_pic (info)
4551 && (must_be_dyn_reloc (info, r_type)
4553 && (!SYMBOLIC_BIND (info, h)
4554 || h->root.type == bfd_link_hash_defweak
4555 || !h->def_regular))))
4556 || (ELIMINATE_COPY_RELOCS
4557 && !bfd_link_pic (info)
4559 && (h->root.type == bfd_link_hash_defweak
4560 || !h->def_regular)))
4564 "ppc_elf_check_relocs needs to "
4565 "create relocation for %s\n",
4566 (h && h->root.root.string
4567 ? h->root.root.string : "<unknown>"));
4571 if (htab->elf.dynobj == NULL)
4572 htab->elf.dynobj = abfd;
4574 sreloc = _bfd_elf_make_dynamic_reloc_section
4575 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4581 /* If this is a global symbol, we count the number of
4582 relocations we need for this symbol. */
4585 struct elf_dyn_relocs *p;
4586 struct elf_dyn_relocs **rel_head;
4588 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4590 if (p == NULL || p->sec != sec)
4592 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4595 p->next = *rel_head;
4602 if (!must_be_dyn_reloc (info, r_type))
4607 /* Track dynamic relocs needed for local syms too.
4608 We really need local syms available to do this
4610 struct ppc_dyn_relocs *p;
4611 struct ppc_dyn_relocs **rel_head;
4612 bfd_boolean is_ifunc;
4615 Elf_Internal_Sym *isym;
4617 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4622 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4626 vpp = &elf_section_data (s)->local_dynrel;
4627 rel_head = (struct ppc_dyn_relocs **) vpp;
4628 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4630 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4632 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4634 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4637 p->next = *rel_head;
4640 p->ifunc = is_ifunc;
4654 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4655 and OBFD, and merge non-conflicting ones. */
4657 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4659 bfd *obfd = info->output_bfd;
4660 obj_attribute *in_attr, *in_attrs;
4661 obj_attribute *out_attr, *out_attrs;
4663 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4664 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4666 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4667 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4669 if (in_attr->i != out_attr->i)
4671 int in_fp = in_attr->i & 3;
4672 int out_fp = out_attr->i & 3;
4676 else if (out_fp == 0)
4679 out_attr->i ^= in_fp;
4681 else if (out_fp != 2 && in_fp == 2)
4683 /* xgettext:c-format */
4684 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4685 else if (out_fp == 2 && in_fp != 2)
4687 /* xgettext:c-format */
4688 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4689 else if (out_fp == 1 && in_fp == 3)
4691 /* xgettext:c-format */
4692 (_("Warning: %B uses double-precision hard float, "
4693 "%B uses single-precision hard float"), obfd, ibfd);
4694 else if (out_fp == 3 && in_fp == 1)
4696 /* xgettext:c-format */
4697 (_("Warning: %B uses double-precision hard float, "
4698 "%B uses single-precision hard float"), ibfd, obfd);
4700 in_fp = in_attr->i & 0xc;
4701 out_fp = out_attr->i & 0xc;
4704 else if (out_fp == 0)
4707 out_attr->i ^= in_fp;
4709 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4711 /* xgettext:c-format */
4712 (_("Warning: %B uses 64-bit long double, "
4713 "%B uses 128-bit long double"), ibfd, obfd);
4714 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4716 /* xgettext:c-format */
4717 (_("Warning: %B uses 64-bit long double, "
4718 "%B uses 128-bit long double"), obfd, ibfd);
4719 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4721 /* xgettext:c-format */
4722 (_("Warning: %B uses IBM long double, "
4723 "%B uses IEEE long double"), ibfd, obfd);
4724 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4726 /* xgettext:c-format */
4727 (_("Warning: %B uses IBM long double, "
4728 "%B uses IEEE long double"), obfd, ibfd);
4732 /* Merge object attributes from IBFD into OBFD. Warn if
4733 there are conflicting attributes. */
4735 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4738 obj_attribute *in_attr, *in_attrs;
4739 obj_attribute *out_attr, *out_attrs;
4741 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4743 obfd = info->output_bfd;
4744 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4745 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4747 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4748 merge non-conflicting ones. */
4749 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4750 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4751 if (in_attr->i != out_attr->i)
4753 int in_vec = in_attr->i & 3;
4754 int out_vec = out_attr->i & 3;
4758 else if (out_vec == 0)
4761 out_attr->i = in_vec;
4763 /* For now, allow generic to transition to AltiVec or SPE
4764 without a warning. If GCC marked files with their stack
4765 alignment and used don't-care markings for files which are
4766 not affected by the vector ABI, we could warn about this
4768 else if (in_vec == 1)
4770 else if (out_vec == 1)
4773 out_attr->i = in_vec;
4775 else if (out_vec < in_vec)
4777 /* xgettext:c-format */
4778 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4780 else if (out_vec > in_vec)
4782 /* xgettext:c-format */
4783 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4787 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4788 and merge non-conflicting ones. */
4789 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4790 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4791 if (in_attr->i != out_attr->i)
4793 int in_struct = in_attr->i & 3;
4794 int out_struct = out_attr->i & 3;
4796 if (in_struct == 0 || in_struct == 3)
4798 else if (out_struct == 0)
4801 out_attr->i = in_struct;
4803 else if (out_struct < in_struct)
4805 /* xgettext:c-format */
4806 (_("Warning: %B uses r3/r4 for small structure returns, "
4807 "%B uses memory"), obfd, ibfd);
4808 else if (out_struct > in_struct)
4810 /* xgettext:c-format */
4811 (_("Warning: %B uses r3/r4 for small structure returns, "
4812 "%B uses memory"), ibfd, obfd);
4815 /* Merge Tag_compatibility attributes and any common GNU ones. */
4816 _bfd_elf_merge_object_attributes (ibfd, info);
4821 /* Merge backend specific data from an object file to the output
4822 object file when linking. */
4825 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4827 bfd *obfd = info->output_bfd;
4832 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4835 /* Check if we have the same endianness. */
4836 if (! _bfd_generic_verify_endian_match (ibfd, info))
4839 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4842 new_flags = elf_elfheader (ibfd)->e_flags;
4843 old_flags = elf_elfheader (obfd)->e_flags;
4844 if (!elf_flags_init (obfd))
4846 /* First call, no flags set. */
4847 elf_flags_init (obfd) = TRUE;
4848 elf_elfheader (obfd)->e_flags = new_flags;
4851 /* Compatible flags are ok. */
4852 else if (new_flags == old_flags)
4855 /* Incompatible flags. */
4858 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4859 to be linked with either. */
4861 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4862 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4866 (_("%B: compiled with -mrelocatable and linked with "
4867 "modules compiled normally"), ibfd);
4869 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4870 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4874 (_("%B: compiled normally and linked with "
4875 "modules compiled with -mrelocatable"), ibfd);
4878 /* The output is -mrelocatable-lib iff both the input files are. */
4879 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4880 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4882 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4883 but each input file is either -mrelocatable or -mrelocatable-lib. */
4884 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4885 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4886 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4887 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4889 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4890 any module uses it. */
4891 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4893 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4894 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4896 /* Warn about any other mismatches. */
4897 if (new_flags != old_flags)
4901 /* xgettext:c-format */
4902 (_("%B: uses different e_flags (0x%lx) fields "
4903 "than previous modules (0x%lx)"),
4904 ibfd, (long) new_flags, (long) old_flags);
4909 bfd_set_error (bfd_error_bad_value);
4918 ppc_elf_vle_split16 (bfd *input_bfd,
4919 asection *input_section,
4920 unsigned long offset,
4923 split16_format_type split16_format,
4926 unsigned int insn, opcode, top5;
4928 insn = bfd_get_32 (input_bfd, loc);
4929 opcode = insn & 0xfc00f800;
4930 if (opcode == E_OR2I_INSN
4931 || opcode == E_AND2I_DOT_INSN
4932 || opcode == E_OR2IS_INSN
4933 || opcode == E_LIS_INSN
4934 || opcode == E_AND2IS_DOT_INSN)
4936 if (split16_format != split16a_type)
4939 split16_format = split16a_type;
4942 /* xgettext:c-format */
4943 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4944 input_bfd, input_section, offset, opcode);
4947 else if (opcode == E_ADD2I_DOT_INSN
4948 || opcode == E_ADD2IS_INSN
4949 || opcode == E_CMP16I_INSN
4950 || opcode == E_MULL2I_INSN
4951 || opcode == E_CMPL16I_INSN
4952 || opcode == E_CMPH16I_INSN
4953 || opcode == E_CMPHL16I_INSN)
4955 if (split16_format != split16d_type)
4958 split16_format = split16d_type;
4961 /* xgettext:c-format */
4962 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4963 input_bfd, input_section, offset, opcode);
4966 top5 = value & 0xf800;
4967 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4968 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4970 insn |= value & 0x7ff;
4971 bfd_put_32 (input_bfd, insn, loc);
4974 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4975 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4977 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4978 struct bfd_link_info *info)
4980 struct ppc_elf_link_hash_table *htab;
4983 htab = ppc_elf_hash_table (info);
4985 if (htab->plt_type == PLT_UNSET)
4987 struct elf_link_hash_entry *h;
4989 if (htab->params->plt_style == PLT_OLD)
4990 htab->plt_type = PLT_OLD;
4991 else if (bfd_link_pic (info)
4992 && htab->elf.dynamic_sections_created
4993 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4994 FALSE, FALSE, TRUE)) != NULL
4995 && (h->type == STT_FUNC
4998 && !(SYMBOL_CALLS_LOCAL (info, h)
4999 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5000 && h->root.type == bfd_link_hash_undefweak)))
5002 /* Profiling of shared libs (and pies) is not supported with
5003 secure plt, because ppc32 does profiling before a
5004 function prologue and a secure plt pic call stubs needs
5005 r30 to be set up. */
5006 htab->plt_type = PLT_OLD;
5011 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
5013 /* Look through the reloc flags left by ppc_elf_check_relocs.
5014 Use the old style bss plt if a file makes plt calls
5015 without using the new relocs, and if ld isn't given
5016 --secure-plt and we never see REL16 relocs. */
5017 if (plt_type == PLT_UNSET)
5019 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
5020 if (is_ppc_elf (ibfd))
5022 if (ppc_elf_tdata (ibfd)->has_rel16)
5024 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5027 htab->old_bfd = ibfd;
5031 htab->plt_type = plt_type;
5034 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5036 if (htab->old_bfd != NULL)
5037 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5040 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5043 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5045 if (htab->plt_type == PLT_NEW)
5047 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5048 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5050 /* The new PLT is a loaded section. */
5051 if (htab->elf.splt != NULL
5052 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5055 /* The new GOT is not executable. */
5056 if (htab->elf.sgot != NULL
5057 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5062 /* Stop an unused .glink section from affecting .text alignment. */
5063 if (htab->glink != NULL
5064 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5067 return htab->plt_type == PLT_NEW;
5070 /* Return the section that should be marked against GC for a given
5074 ppc_elf_gc_mark_hook (asection *sec,
5075 struct bfd_link_info *info,
5076 Elf_Internal_Rela *rel,
5077 struct elf_link_hash_entry *h,
5078 Elf_Internal_Sym *sym)
5081 switch (ELF32_R_TYPE (rel->r_info))
5083 case R_PPC_GNU_VTINHERIT:
5084 case R_PPC_GNU_VTENTRY:
5088 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5091 /* Update the got, plt and dynamic reloc reference counts for the
5092 section being removed. */
5095 ppc_elf_gc_sweep_hook (bfd *abfd,
5096 struct bfd_link_info *info,
5098 const Elf_Internal_Rela *relocs)
5100 struct ppc_elf_link_hash_table *htab;
5101 Elf_Internal_Shdr *symtab_hdr;
5102 struct elf_link_hash_entry **sym_hashes;
5103 bfd_signed_vma *local_got_refcounts;
5104 const Elf_Internal_Rela *rel, *relend;
5107 if (bfd_link_relocatable (info))
5110 if ((sec->flags & SEC_ALLOC) == 0)
5113 elf_section_data (sec)->local_dynrel = NULL;
5115 htab = ppc_elf_hash_table (info);
5116 symtab_hdr = &elf_symtab_hdr (abfd);
5117 sym_hashes = elf_sym_hashes (abfd);
5118 local_got_refcounts = elf_local_got_refcounts (abfd);
5119 got2 = bfd_get_section_by_name (abfd, ".got2");
5121 relend = relocs + sec->reloc_count;
5122 for (rel = relocs; rel < relend; rel++)
5124 unsigned long r_symndx;
5125 enum elf_ppc_reloc_type r_type;
5126 struct elf_link_hash_entry *h = NULL;
5128 r_symndx = ELF32_R_SYM (rel->r_info);
5129 if (r_symndx >= symtab_hdr->sh_info)
5131 struct elf_dyn_relocs **pp, *p;
5132 struct ppc_elf_link_hash_entry *eh;
5134 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5135 while (h->root.type == bfd_link_hash_indirect
5136 || h->root.type == bfd_link_hash_warning)
5137 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5138 eh = (struct ppc_elf_link_hash_entry *) h;
5140 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5143 /* Everything must go for SEC. */
5149 r_type = ELF32_R_TYPE (rel->r_info);
5150 if (!htab->is_vxworks
5152 && local_got_refcounts != NULL
5153 && (!bfd_link_pic (info)
5154 || is_branch_reloc (r_type)))
5156 struct plt_entry **local_plt = (struct plt_entry **)
5157 (local_got_refcounts + symtab_hdr->sh_info);
5158 char *local_got_tls_masks = (char *)
5159 (local_plt + symtab_hdr->sh_info);
5160 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5162 struct plt_entry **ifunc = local_plt + r_symndx;
5164 struct plt_entry *ent;
5166 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5167 addend = rel->r_addend;
5168 ent = find_plt_ent (ifunc, got2, addend);
5169 if (ent->plt.refcount > 0)
5170 ent->plt.refcount -= 1;
5177 case R_PPC_GOT_TLSLD16:
5178 case R_PPC_GOT_TLSLD16_LO:
5179 case R_PPC_GOT_TLSLD16_HI:
5180 case R_PPC_GOT_TLSLD16_HA:
5181 case R_PPC_GOT_TLSGD16:
5182 case R_PPC_GOT_TLSGD16_LO:
5183 case R_PPC_GOT_TLSGD16_HI:
5184 case R_PPC_GOT_TLSGD16_HA:
5185 case R_PPC_GOT_TPREL16:
5186 case R_PPC_GOT_TPREL16_LO:
5187 case R_PPC_GOT_TPREL16_HI:
5188 case R_PPC_GOT_TPREL16_HA:
5189 case R_PPC_GOT_DTPREL16:
5190 case R_PPC_GOT_DTPREL16_LO:
5191 case R_PPC_GOT_DTPREL16_HI:
5192 case R_PPC_GOT_DTPREL16_HA:
5194 case R_PPC_GOT16_LO:
5195 case R_PPC_GOT16_HI:
5196 case R_PPC_GOT16_HA:
5199 if (h->got.refcount > 0)
5201 if (!bfd_link_pic (info))
5203 struct plt_entry *ent;
5205 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5206 if (ent != NULL && ent->plt.refcount > 0)
5207 ent->plt.refcount -= 1;
5210 else if (local_got_refcounts != NULL)
5212 if (local_got_refcounts[r_symndx] > 0)
5213 local_got_refcounts[r_symndx]--;
5219 case R_PPC_REL14_BRTAKEN:
5220 case R_PPC_REL14_BRNTAKEN:
5222 if (h == NULL || h == htab->elf.hgot)
5229 case R_PPC_ADDR16_LO:
5230 case R_PPC_ADDR16_HI:
5231 case R_PPC_ADDR16_HA:
5233 case R_PPC_ADDR14_BRTAKEN:
5234 case R_PPC_ADDR14_BRNTAKEN:
5237 if (bfd_link_pic (info))
5242 case R_PPC_PLTREL24:
5243 case R_PPC_PLTREL32:
5244 case R_PPC_PLT16_LO:
5245 case R_PPC_PLT16_HI:
5246 case R_PPC_PLT16_HA:
5250 struct plt_entry *ent;
5252 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5253 addend = rel->r_addend;
5254 ent = find_plt_ent (&h->plt.plist, got2, addend);
5255 if (ent != NULL && ent->plt.refcount > 0)
5256 ent->plt.refcount -= 1;
5267 /* Set plt output section type, htab->tls_get_addr, and call the
5268 generic ELF tls_setup function. */
5271 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5273 struct ppc_elf_link_hash_table *htab;
5275 htab = ppc_elf_hash_table (info);
5276 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5277 FALSE, FALSE, TRUE);
5278 if (htab->plt_type != PLT_NEW)
5279 htab->params->no_tls_get_addr_opt = TRUE;
5281 if (!htab->params->no_tls_get_addr_opt)
5283 struct elf_link_hash_entry *opt, *tga;
5284 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5285 FALSE, FALSE, TRUE);
5287 && (opt->root.type == bfd_link_hash_defined
5288 || opt->root.type == bfd_link_hash_defweak))
5290 /* If glibc supports an optimized __tls_get_addr call stub,
5291 signalled by the presence of __tls_get_addr_opt, and we'll
5292 be calling __tls_get_addr via a plt call stub, then
5293 make __tls_get_addr point to __tls_get_addr_opt. */
5294 tga = htab->tls_get_addr;
5295 if (htab->elf.dynamic_sections_created
5297 && (tga->type == STT_FUNC
5299 && !(SYMBOL_CALLS_LOCAL (info, tga)
5300 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5301 && tga->root.type == bfd_link_hash_undefweak)))
5303 struct plt_entry *ent;
5304 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5305 if (ent->plt.refcount > 0)
5309 tga->root.type = bfd_link_hash_indirect;
5310 tga->root.u.i.link = &opt->root;
5311 ppc_elf_copy_indirect_symbol (info, opt, tga);
5313 if (opt->dynindx != -1)
5315 /* Use __tls_get_addr_opt in dynamic relocations. */
5317 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5319 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5322 htab->tls_get_addr = opt;
5327 htab->params->no_tls_get_addr_opt = TRUE;
5329 if (htab->plt_type == PLT_NEW
5330 && htab->elf.splt != NULL
5331 && htab->elf.splt->output_section != NULL)
5333 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5334 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5337 return _bfd_elf_tls_setup (obfd, info);
5340 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5344 branch_reloc_hash_match (const bfd *ibfd,
5345 const Elf_Internal_Rela *rel,
5346 const struct elf_link_hash_entry *hash)
5348 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5349 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5350 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5352 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5354 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5355 struct elf_link_hash_entry *h;
5357 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5358 while (h->root.type == bfd_link_hash_indirect
5359 || h->root.type == bfd_link_hash_warning)
5360 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5367 /* Run through all the TLS relocs looking for optimization
5371 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5372 struct bfd_link_info *info)
5376 struct ppc_elf_link_hash_table *htab;
5379 if (!bfd_link_executable (info))
5382 htab = ppc_elf_hash_table (info);
5386 /* Make two passes through the relocs. First time check that tls
5387 relocs involved in setting up a tls_get_addr call are indeed
5388 followed by such a call. If they are not, don't do any tls
5389 optimization. On the second pass twiddle tls_mask flags to
5390 notify relocate_section that optimization can be done, and
5391 adjust got and plt refcounts. */
5392 for (pass = 0; pass < 2; ++pass)
5393 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5395 Elf_Internal_Sym *locsyms = NULL;
5396 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5397 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5399 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5400 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5402 Elf_Internal_Rela *relstart, *rel, *relend;
5403 int expecting_tls_get_addr = 0;
5405 /* Read the relocations. */
5406 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5408 if (relstart == NULL)
5411 relend = relstart + sec->reloc_count;
5412 for (rel = relstart; rel < relend; rel++)
5414 enum elf_ppc_reloc_type r_type;
5415 unsigned long r_symndx;
5416 struct elf_link_hash_entry *h = NULL;
5418 char tls_set, tls_clear;
5419 bfd_boolean is_local;
5420 bfd_signed_vma *got_count;
5422 r_symndx = ELF32_R_SYM (rel->r_info);
5423 if (r_symndx >= symtab_hdr->sh_info)
5425 struct elf_link_hash_entry **sym_hashes;
5427 sym_hashes = elf_sym_hashes (ibfd);
5428 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5429 while (h->root.type == bfd_link_hash_indirect
5430 || h->root.type == bfd_link_hash_warning)
5431 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5439 r_type = ELF32_R_TYPE (rel->r_info);
5440 /* If this section has old-style __tls_get_addr calls
5441 without marker relocs, then check that each
5442 __tls_get_addr call reloc is preceded by a reloc
5443 that conceivably belongs to the __tls_get_addr arg
5444 setup insn. If we don't find matching arg setup
5445 relocs, don't do any tls optimization. */
5447 && sec->has_tls_get_addr_call
5449 && h == htab->tls_get_addr
5450 && !expecting_tls_get_addr
5451 && is_branch_reloc (r_type))
5453 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5454 "TLS optimization disabled\n",
5455 ibfd, sec, rel->r_offset);
5456 if (elf_section_data (sec)->relocs != relstart)
5461 expecting_tls_get_addr = 0;
5464 case R_PPC_GOT_TLSLD16:
5465 case R_PPC_GOT_TLSLD16_LO:
5466 expecting_tls_get_addr = 1;
5469 case R_PPC_GOT_TLSLD16_HI:
5470 case R_PPC_GOT_TLSLD16_HA:
5471 /* These relocs should never be against a symbol
5472 defined in a shared lib. Leave them alone if
5473 that turns out to be the case. */
5482 case R_PPC_GOT_TLSGD16:
5483 case R_PPC_GOT_TLSGD16_LO:
5484 expecting_tls_get_addr = 1;
5487 case R_PPC_GOT_TLSGD16_HI:
5488 case R_PPC_GOT_TLSGD16_HA:
5494 tls_set = TLS_TLS | TLS_TPRELGD;
5498 case R_PPC_GOT_TPREL16:
5499 case R_PPC_GOT_TPREL16_LO:
5500 case R_PPC_GOT_TPREL16_HI:
5501 case R_PPC_GOT_TPREL16_HA:
5506 tls_clear = TLS_TPREL;
5514 expecting_tls_get_addr = 2;
5525 if (!expecting_tls_get_addr
5526 || (expecting_tls_get_addr == 1
5527 && !sec->has_tls_get_addr_call))
5530 if (rel + 1 < relend
5531 && branch_reloc_hash_match (ibfd, rel + 1,
5532 htab->tls_get_addr))
5535 /* Uh oh, we didn't find the expected call. We
5536 could just mark this symbol to exclude it
5537 from tls optimization but it's safer to skip
5538 the entire optimization. */
5539 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5540 "TLS optimization disabled\n"),
5541 ibfd, sec, rel->r_offset);
5542 if (elf_section_data (sec)->relocs != relstart)
5547 if (expecting_tls_get_addr)
5549 struct plt_entry *ent;
5552 if (bfd_link_pic (info)
5553 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5554 addend = rel[1].r_addend;
5555 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5557 if (ent != NULL && ent->plt.refcount > 0)
5558 ent->plt.refcount -= 1;
5560 if (expecting_tls_get_addr == 2)
5566 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5567 got_count = &h->got.refcount;
5571 bfd_signed_vma *lgot_refs;
5572 struct plt_entry **local_plt;
5575 if (locsyms == NULL)
5577 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5578 if (locsyms == NULL)
5579 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5580 symtab_hdr->sh_info,
5581 0, NULL, NULL, NULL);
5582 if (locsyms == NULL)
5584 if (elf_section_data (sec)->relocs != relstart)
5589 lgot_refs = elf_local_got_refcounts (ibfd);
5590 if (lgot_refs == NULL)
5592 local_plt = (struct plt_entry **)
5593 (lgot_refs + symtab_hdr->sh_info);
5594 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5595 tls_mask = &lgot_masks[r_symndx];
5596 got_count = &lgot_refs[r_symndx];
5601 /* We managed to get rid of a got entry. */
5606 *tls_mask |= tls_set;
5607 *tls_mask &= ~tls_clear;
5610 if (elf_section_data (sec)->relocs != relstart)
5615 && (symtab_hdr->contents != (unsigned char *) locsyms))
5617 if (!info->keep_memory)
5620 symtab_hdr->contents = (unsigned char *) locsyms;
5626 /* Return true if we have dynamic relocs that apply to read-only sections. */
5629 readonly_dynrelocs (struct elf_link_hash_entry *h)
5631 struct elf_dyn_relocs *p;
5633 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5635 asection *s = p->sec->output_section;
5638 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5639 == (SEC_READONLY | SEC_ALLOC)))
5645 /* Adjust a symbol defined by a dynamic object and referenced by a
5646 regular object. The current definition is in some section of the
5647 dynamic object, but we're not including those sections. We have to
5648 change the definition to something the rest of the link can
5652 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5653 struct elf_link_hash_entry *h)
5655 struct ppc_elf_link_hash_table *htab;
5659 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5660 h->root.root.string);
5663 /* Make sure we know what is going on here. */
5664 htab = ppc_elf_hash_table (info);
5665 BFD_ASSERT (htab->elf.dynobj != NULL
5667 || h->type == STT_GNU_IFUNC
5668 || h->u.weakdef != NULL
5671 && !h->def_regular)));
5673 /* Deal with function syms. */
5674 if (h->type == STT_FUNC
5675 || h->type == STT_GNU_IFUNC
5678 /* Clear procedure linkage table information for any symbol that
5679 won't need a .plt entry. */
5680 struct plt_entry *ent;
5681 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5682 if (ent->plt.refcount > 0)
5685 || (h->type != STT_GNU_IFUNC
5686 && (SYMBOL_CALLS_LOCAL (info, h)
5687 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5688 && h->root.type == bfd_link_hash_undefweak))))
5690 /* A PLT entry is not required/allowed when:
5692 1. We are not using ld.so; because then the PLT entry
5693 can't be set up, so we can't use one. In this case,
5694 ppc_elf_adjust_dynamic_symbol won't even be called.
5696 2. GC has rendered the entry unused.
5698 3. We know for certain that a call to this symbol
5699 will go to this object, or will remain undefined. */
5700 h->plt.plist = NULL;
5702 h->pointer_equality_needed = 0;
5706 /* Taking a function's address in a read/write section
5707 doesn't require us to define the function symbol in the
5708 executable on a plt call stub. A dynamic reloc can
5709 be used instead, giving better runtime performance.
5710 (Calls via that function pointer don't need to bounce
5711 through the plt call stub.) Similarly, use a dynamic
5712 reloc for a weak reference when possible, allowing the
5713 resolution of the symbol to be set at load time rather
5715 if ((h->pointer_equality_needed
5716 || (!h->ref_regular_nonweak && h->non_got_ref))
5717 && !htab->is_vxworks
5718 && !ppc_elf_hash_entry (h)->has_sda_refs
5719 && !readonly_dynrelocs (h))
5721 h->pointer_equality_needed = 0;
5722 /* After adjust_dynamic_symbol, non_got_ref set in the
5723 non-pic case means that dyn_relocs for this symbol
5724 should be discarded. */
5728 h->protected_def = 0;
5732 h->plt.plist = NULL;
5734 /* If this is a weak symbol, and there is a real definition, the
5735 processor independent code will have arranged for us to see the
5736 real definition first, and we can just use the same value. */
5737 if (h->u.weakdef != NULL)
5739 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5740 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5741 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5742 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5743 if (ELIMINATE_COPY_RELOCS)
5744 h->non_got_ref = h->u.weakdef->non_got_ref;
5748 /* This is a reference to a symbol defined by a dynamic object which
5749 is not a function. */
5751 /* If we are creating a shared library, we must presume that the
5752 only references to the symbol are via the global offset table.
5753 For such cases we need not do anything here; the relocations will
5754 be handled correctly by relocate_section. */
5755 if (bfd_link_pic (info))
5757 h->protected_def = 0;
5761 /* If there are no references to this symbol that do not use the
5762 GOT, we don't need to generate a copy reloc. */
5763 if (!h->non_got_ref)
5765 h->protected_def = 0;
5769 /* Protected variables do not work with .dynbss. The copy in
5770 .dynbss won't be used by the shared library with the protected
5771 definition for the variable. Editing to PIC, or text relocations
5772 are preferable to an incorrect program. */
5773 if (h->protected_def)
5775 if (ELIMINATE_COPY_RELOCS
5776 && ppc_elf_hash_entry (h)->has_addr16_ha
5777 && ppc_elf_hash_entry (h)->has_addr16_lo
5778 && htab->params->pic_fixup == 0
5779 && info->disable_target_specific_optimizations <= 1)
5780 htab->params->pic_fixup = 1;
5785 /* If -z nocopyreloc was given, we won't generate them either. */
5786 if (info->nocopyreloc)
5792 /* If we didn't find any dynamic relocs in read-only sections, then
5793 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5794 We can't do this if there are any small data relocations. This
5795 doesn't work on VxWorks, where we can not have dynamic
5796 relocations (other than copy and jump slot relocations) in an
5798 if (ELIMINATE_COPY_RELOCS
5799 && !ppc_elf_hash_entry (h)->has_sda_refs
5800 && !htab->is_vxworks
5802 && !readonly_dynrelocs (h))
5808 /* We must allocate the symbol in our .dynbss section, which will
5809 become part of the .bss section of the executable. There will be
5810 an entry for this symbol in the .dynsym section. The dynamic
5811 object will contain position independent code, so all references
5812 from the dynamic object to this symbol will go through the global
5813 offset table. The dynamic linker will use the .dynsym entry to
5814 determine the address it must put in the global offset table, so
5815 both the dynamic object and the regular object will refer to the
5816 same memory location for the variable.
5818 Of course, if the symbol is referenced using SDAREL relocs, we
5819 must instead allocate it in .sbss. */
5821 if (ppc_elf_hash_entry (h)->has_sda_refs)
5823 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5824 s = htab->elf.sdynrelro;
5826 s = htab->elf.sdynbss;
5827 BFD_ASSERT (s != NULL);
5829 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5830 copy the initial value out of the dynamic object and into the
5831 runtime process image. We need to remember the offset into the
5832 .rela.bss section we are going to use. */
5833 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5837 if (ppc_elf_hash_entry (h)->has_sda_refs)
5838 srel = htab->relsbss;
5839 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5840 srel = htab->elf.sreldynrelro;
5842 srel = htab->elf.srelbss;
5843 BFD_ASSERT (srel != NULL);
5844 srel->size += sizeof (Elf32_External_Rela);
5848 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5851 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5852 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5853 specifying the addend on the plt relocation. For -fpic code, the sym
5854 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5855 xxxxxxxx.got2.plt_pic32.<callee>. */
5858 add_stub_sym (struct plt_entry *ent,
5859 struct elf_link_hash_entry *h,
5860 struct bfd_link_info *info)
5862 struct elf_link_hash_entry *sh;
5863 size_t len1, len2, len3;
5866 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5868 if (bfd_link_pic (info))
5869 stub = ".plt_pic32.";
5871 stub = ".plt_call32.";
5873 len1 = strlen (h->root.root.string);
5874 len2 = strlen (stub);
5877 len3 = strlen (ent->sec->name);
5878 name = bfd_malloc (len1 + len2 + len3 + 9);
5881 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5883 memcpy (name + 8, ent->sec->name, len3);
5884 memcpy (name + 8 + len3, stub, len2);
5885 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5886 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5889 if (sh->root.type == bfd_link_hash_new)
5891 sh->root.type = bfd_link_hash_defined;
5892 sh->root.u.def.section = htab->glink;
5893 sh->root.u.def.value = ent->glink_offset;
5894 sh->ref_regular = 1;
5895 sh->def_regular = 1;
5896 sh->ref_regular_nonweak = 1;
5897 sh->forced_local = 1;
5899 sh->root.linker_def = 1;
5904 /* Allocate NEED contiguous space in .got, and return the offset.
5905 Handles allocation of the got header when crossing 32k. */
5908 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5911 unsigned int max_before_header;
5913 if (htab->plt_type == PLT_VXWORKS)
5915 where = htab->elf.sgot->size;
5916 htab->elf.sgot->size += need;
5920 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5921 if (need <= htab->got_gap)
5923 where = max_before_header - htab->got_gap;
5924 htab->got_gap -= need;
5928 if (htab->elf.sgot->size + need > max_before_header
5929 && htab->elf.sgot->size <= max_before_header)
5931 htab->got_gap = max_before_header - htab->elf.sgot->size;
5932 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5934 where = htab->elf.sgot->size;
5935 htab->elf.sgot->size += need;
5941 /* If H is undefined weak, make it dynamic if that makes sense. */
5944 ensure_undefweak_dynamic (struct bfd_link_info *info,
5945 struct elf_link_hash_entry *h)
5947 struct elf_link_hash_table *htab = elf_hash_table (info);
5949 if (htab->dynamic_sections_created
5950 && info->dynamic_undefined_weak != 0
5951 && h->root.type == bfd_link_hash_undefweak
5954 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5955 return bfd_elf_link_record_dynamic_symbol (info, h);
5959 /* Allocate space in associated reloc sections for dynamic relocs. */
5962 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5964 struct bfd_link_info *info = inf;
5965 struct ppc_elf_link_hash_entry *eh;
5966 struct ppc_elf_link_hash_table *htab;
5967 struct elf_dyn_relocs *p;
5970 if (h->root.type == bfd_link_hash_indirect)
5973 htab = ppc_elf_hash_table (info);
5974 eh = (struct ppc_elf_link_hash_entry *) h;
5975 if (eh->elf.got.refcount > 0
5976 || (ELIMINATE_COPY_RELOCS
5977 && !eh->elf.def_regular
5978 && eh->elf.protected_def
5979 && eh->has_addr16_ha
5980 && eh->has_addr16_lo
5981 && htab->params->pic_fixup > 0))
5985 /* Make sure this symbol is output as a dynamic symbol.
5986 Undefined weak syms won't yet be marked as dynamic. */
5987 if (!ensure_undefweak_dynamic (info, &eh->elf))
5991 if ((eh->tls_mask & TLS_TLS) != 0)
5993 if ((eh->tls_mask & TLS_LD) != 0)
5995 if (!eh->elf.def_dynamic)
5996 /* We'll just use htab->tlsld_got.offset. This should
5997 always be the case. It's a little odd if we have
5998 a local dynamic reloc against a non-local symbol. */
5999 htab->tlsld_got.refcount += 1;
6003 if ((eh->tls_mask & TLS_GD) != 0)
6005 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6007 if ((eh->tls_mask & TLS_DTPREL) != 0)
6013 eh->elf.got.offset = (bfd_vma) -1;
6016 eh->elf.got.offset = allocate_got (htab, need);
6017 if ((bfd_link_pic (info)
6018 || (htab->elf.dynamic_sections_created
6019 && eh->elf.dynindx != -1
6020 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
6021 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6022 || eh->elf.root.type != bfd_link_hash_undefweak))
6024 asection *rsec = htab->elf.srelgot;
6026 if (eh->elf.type == STT_GNU_IFUNC)
6027 rsec = htab->elf.irelplt;
6028 /* All the entries we allocated need relocs.
6029 Except LD only needs one. */
6030 if ((eh->tls_mask & TLS_LD) != 0
6031 && eh->elf.def_dynamic)
6033 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6038 eh->elf.got.offset = (bfd_vma) -1;
6040 /* If no dynamic sections we can't have dynamic relocs, except for
6041 IFUNCs which are handled even in static executables. */
6042 if (!htab->elf.dynamic_sections_created
6043 && h->type != STT_GNU_IFUNC)
6044 eh->dyn_relocs = NULL;
6046 if (eh->dyn_relocs == NULL)
6049 /* In the shared -Bsymbolic case, discard space allocated for
6050 dynamic pc-relative relocs against symbols which turn out to be
6051 defined in regular objects. For the normal shared case, discard
6052 space for relocs that have become local due to symbol visibility
6054 else if (bfd_link_pic (info))
6056 /* Discard relocs on undefined symbols that must be local. */
6057 if (h->root.type == bfd_link_hash_undefined
6058 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6059 eh->dyn_relocs = NULL;
6061 /* Also discard relocs on undefined weak syms with non-default
6062 visibility, or when dynamic_undefined_weak says so. */
6063 else if (h->root.type == bfd_link_hash_undefweak
6064 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6065 || info->dynamic_undefined_weak == 0))
6066 eh->dyn_relocs = NULL;
6068 /* Relocs that use pc_count are those that appear on a call insn,
6069 or certain REL relocs (see must_be_dyn_reloc) that can be
6070 generated via assembly. We want calls to protected symbols to
6071 resolve directly to the function rather than going via the plt.
6072 If people want function pointer comparisons to work as expected
6073 then they should avoid writing weird assembly. */
6074 else if (SYMBOL_CALLS_LOCAL (info, h))
6076 struct elf_dyn_relocs **pp;
6078 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6080 p->count -= p->pc_count;
6089 if (htab->is_vxworks)
6091 struct elf_dyn_relocs **pp;
6093 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6095 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6102 if (eh->dyn_relocs != NULL)
6104 /* Make sure undefined weak symbols are output as a dynamic
6106 if (!ensure_undefweak_dynamic (info, h))
6110 else if (ELIMINATE_COPY_RELOCS)
6112 /* For the non-pic case, discard space for relocs against
6113 symbols which turn out to need copy relocs or are not
6117 && !(h->protected_def
6118 && eh->has_addr16_ha
6119 && eh->has_addr16_lo
6120 && htab->params->pic_fixup > 0))
6122 /* Make sure this symbol is output as a dynamic symbol.
6123 Undefined weak syms won't yet be marked as dynamic. */
6124 if (!ensure_undefweak_dynamic (info, h))
6127 if (h->dynindx == -1)
6128 eh->dyn_relocs = NULL;
6131 eh->dyn_relocs = NULL;
6134 /* Allocate space. */
6135 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6137 asection *sreloc = elf_section_data (p->sec)->sreloc;
6138 if (eh->elf.type == STT_GNU_IFUNC)
6139 sreloc = htab->elf.irelplt;
6140 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6143 /* Handle PLT relocs. Done last, after dynindx has settled. */
6144 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
6145 if (dyn || h->type == STT_GNU_IFUNC)
6147 struct plt_entry *ent;
6148 bfd_boolean doneone = FALSE;
6149 bfd_vma plt_offset = 0, glink_offset = 0;
6151 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6152 if (ent->plt.refcount > 0)
6154 asection *s = htab->elf.splt;
6159 if (htab->plt_type == PLT_NEW || !dyn)
6163 plt_offset = s->size;
6166 ent->plt.offset = plt_offset;
6169 if (!doneone || bfd_link_pic (info))
6171 glink_offset = s->size;
6172 s->size += GLINK_ENTRY_SIZE;
6173 if (h == htab->tls_get_addr
6174 && !htab->params->no_tls_get_addr_opt)
6175 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
6178 && !bfd_link_pic (info)
6182 h->root.u.def.section = s;
6183 h->root.u.def.value = glink_offset;
6185 ent->glink_offset = glink_offset;
6187 if (htab->params->emit_stub_syms
6188 && !add_stub_sym (ent, h, info))
6195 /* If this is the first .plt entry, make room
6196 for the special first entry. */
6198 s->size += htab->plt_initial_entry_size;
6200 /* The PowerPC PLT is actually composed of two
6201 parts, the first part is 2 words (for a load
6202 and a jump), and then there is a remaining
6203 word available at the end. */
6204 plt_offset = (htab->plt_initial_entry_size
6205 + (htab->plt_slot_size
6207 - htab->plt_initial_entry_size)
6208 / htab->plt_entry_size)));
6210 /* If this symbol is not defined in a regular
6211 file, and we are not generating a shared
6212 library, then set the symbol to this location
6213 in the .plt. This is to avoid text
6214 relocations, and is required to make
6215 function pointers compare as equal between
6216 the normal executable and the shared library. */
6217 if (! bfd_link_pic (info)
6221 h->root.u.def.section = s;
6222 h->root.u.def.value = plt_offset;
6225 /* Make room for this entry. */
6226 s->size += htab->plt_entry_size;
6227 /* After the 8192nd entry, room for two entries
6229 if (htab->plt_type == PLT_OLD
6230 && (s->size - htab->plt_initial_entry_size)
6231 / htab->plt_entry_size
6232 > PLT_NUM_SINGLE_ENTRIES)
6233 s->size += htab->plt_entry_size;
6235 ent->plt.offset = plt_offset;
6238 /* We also need to make an entry in the .rela.plt section. */
6242 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6245 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6247 if (htab->plt_type == PLT_VXWORKS)
6249 /* Allocate space for the unloaded relocations. */
6250 if (!bfd_link_pic (info)
6251 && htab->elf.dynamic_sections_created)
6254 == (bfd_vma) htab->plt_initial_entry_size)
6256 htab->srelplt2->size
6257 += (sizeof (Elf32_External_Rela)
6258 * VXWORKS_PLTRESOLVE_RELOCS);
6261 htab->srelplt2->size
6262 += (sizeof (Elf32_External_Rela)
6263 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6266 /* Every PLT entry has an associated GOT entry in
6268 htab->elf.sgotplt->size += 4;
6275 ent->plt.offset = (bfd_vma) -1;
6279 h->plt.plist = NULL;
6285 h->plt.plist = NULL;
6292 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6293 read-only sections. */
6296 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6298 if (h->root.type == bfd_link_hash_indirect)
6301 if (readonly_dynrelocs (h))
6303 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6305 /* Not an error, just cut short the traversal. */
6311 static const unsigned char glink_eh_frame_cie[] =
6313 0, 0, 0, 16, /* length. */
6314 0, 0, 0, 0, /* id. */
6315 1, /* CIE version. */
6316 'z', 'R', 0, /* Augmentation string. */
6317 4, /* Code alignment. */
6318 0x7c, /* Data alignment. */
6320 1, /* Augmentation size. */
6321 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6322 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6325 /* Set the sizes of the dynamic sections. */
6328 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6329 struct bfd_link_info *info)
6331 struct ppc_elf_link_hash_table *htab;
6337 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6340 htab = ppc_elf_hash_table (info);
6341 BFD_ASSERT (htab->elf.dynobj != NULL);
6343 if (elf_hash_table (info)->dynamic_sections_created)
6345 /* Set the contents of the .interp section to the interpreter. */
6346 if (bfd_link_executable (info) && !info->nointerp)
6348 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6349 BFD_ASSERT (s != NULL);
6350 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6351 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6355 if (htab->plt_type == PLT_OLD)
6356 htab->got_header_size = 16;
6357 else if (htab->plt_type == PLT_NEW)
6358 htab->got_header_size = 12;
6360 /* Set up .got offsets for local syms, and space for local dynamic
6362 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6364 bfd_signed_vma *local_got;
6365 bfd_signed_vma *end_local_got;
6366 struct plt_entry **local_plt;
6367 struct plt_entry **end_local_plt;
6369 bfd_size_type locsymcount;
6370 Elf_Internal_Shdr *symtab_hdr;
6372 if (!is_ppc_elf (ibfd))
6375 for (s = ibfd->sections; s != NULL; s = s->next)
6377 struct ppc_dyn_relocs *p;
6379 for (p = ((struct ppc_dyn_relocs *)
6380 elf_section_data (s)->local_dynrel);
6384 if (!bfd_is_abs_section (p->sec)
6385 && bfd_is_abs_section (p->sec->output_section))
6387 /* Input section has been discarded, either because
6388 it is a copy of a linkonce section or due to
6389 linker script /DISCARD/, so we'll be discarding
6392 else if (htab->is_vxworks
6393 && strcmp (p->sec->output_section->name,
6396 /* Relocations in vxworks .tls_vars sections are
6397 handled specially by the loader. */
6399 else if (p->count != 0)
6401 asection *sreloc = elf_section_data (p->sec)->sreloc;
6403 sreloc = htab->elf.irelplt;
6404 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6405 if ((p->sec->output_section->flags
6406 & (SEC_READONLY | SEC_ALLOC))
6407 == (SEC_READONLY | SEC_ALLOC))
6408 info->flags |= DF_TEXTREL;
6413 local_got = elf_local_got_refcounts (ibfd);
6417 symtab_hdr = &elf_symtab_hdr (ibfd);
6418 locsymcount = symtab_hdr->sh_info;
6419 end_local_got = local_got + locsymcount;
6420 local_plt = (struct plt_entry **) end_local_got;
6421 end_local_plt = local_plt + locsymcount;
6422 lgot_masks = (char *) end_local_plt;
6424 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6427 unsigned int need = 0;
6428 if ((*lgot_masks & TLS_TLS) != 0)
6430 if ((*lgot_masks & TLS_GD) != 0)
6432 if ((*lgot_masks & TLS_LD) != 0)
6433 htab->tlsld_got.refcount += 1;
6434 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6436 if ((*lgot_masks & TLS_DTPREL) != 0)
6442 *local_got = (bfd_vma) -1;
6445 *local_got = allocate_got (htab, need);
6446 if (bfd_link_pic (info))
6448 asection *srel = htab->elf.srelgot;
6449 if ((*lgot_masks & PLT_IFUNC) != 0)
6450 srel = htab->elf.irelplt;
6451 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6456 *local_got = (bfd_vma) -1;
6458 if (htab->is_vxworks)
6461 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6462 for (; local_plt < end_local_plt; ++local_plt)
6464 struct plt_entry *ent;
6465 bfd_boolean doneone = FALSE;
6466 bfd_vma plt_offset = 0, glink_offset = 0;
6468 for (ent = *local_plt; ent != NULL; ent = ent->next)
6469 if (ent->plt.refcount > 0)
6475 plt_offset = s->size;
6478 ent->plt.offset = plt_offset;
6481 if (!doneone || bfd_link_pic (info))
6483 glink_offset = s->size;
6484 s->size += GLINK_ENTRY_SIZE;
6486 ent->glink_offset = glink_offset;
6490 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6495 ent->plt.offset = (bfd_vma) -1;
6499 /* Allocate space for global sym dynamic relocs. */
6500 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6502 if (htab->tlsld_got.refcount > 0)
6504 htab->tlsld_got.offset = allocate_got (htab, 8);
6505 if (bfd_link_pic (info))
6506 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6509 htab->tlsld_got.offset = (bfd_vma) -1;
6511 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6513 unsigned int g_o_t = 32768;
6515 /* If we haven't allocated the header, do so now. When we get here,
6516 for old plt/got the got size will be 0 to 32764 (not allocated),
6517 or 32780 to 65536 (header allocated). For new plt/got, the
6518 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6519 if (htab->elf.sgot->size <= 32768)
6521 g_o_t = htab->elf.sgot->size;
6522 if (htab->plt_type == PLT_OLD)
6524 htab->elf.sgot->size += htab->got_header_size;
6527 htab->elf.hgot->root.u.def.value = g_o_t;
6529 if (bfd_link_pic (info))
6531 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6533 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6534 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6536 if (info->emitrelocations)
6538 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6540 if (sda != NULL && sda->ref_regular)
6541 sda->root.u.def.section->flags |= SEC_KEEP;
6542 sda = htab->sdata[1].sym;
6543 if (sda != NULL && sda->ref_regular)
6544 sda->root.u.def.section->flags |= SEC_KEEP;
6547 if (htab->glink != NULL
6548 && htab->glink->size != 0
6549 && htab->elf.dynamic_sections_created)
6551 htab->glink_pltresolve = htab->glink->size;
6552 /* Space for the branch table. ??? We don't need entries for
6553 non-dynamic symbols in this table. This case can arise with
6554 static ifuncs or forced local ifuncs. */
6555 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6556 /* Pad out to align the start of PLTresolve. */
6557 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6559 htab->glink->size += GLINK_PLTRESOLVE;
6561 if (htab->params->emit_stub_syms)
6563 struct elf_link_hash_entry *sh;
6564 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6565 TRUE, FALSE, FALSE);
6568 if (sh->root.type == bfd_link_hash_new)
6570 sh->root.type = bfd_link_hash_defined;
6571 sh->root.u.def.section = htab->glink;
6572 sh->root.u.def.value = htab->glink_pltresolve;
6573 sh->ref_regular = 1;
6574 sh->def_regular = 1;
6575 sh->ref_regular_nonweak = 1;
6576 sh->forced_local = 1;
6578 sh->root.linker_def = 1;
6580 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6581 TRUE, FALSE, FALSE);
6584 if (sh->root.type == bfd_link_hash_new)
6586 sh->root.type = bfd_link_hash_defined;
6587 sh->root.u.def.section = htab->glink;
6588 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6589 sh->ref_regular = 1;
6590 sh->def_regular = 1;
6591 sh->ref_regular_nonweak = 1;
6592 sh->forced_local = 1;
6594 sh->root.linker_def = 1;
6599 if (htab->glink != NULL
6600 && htab->glink->size != 0
6601 && htab->glink_eh_frame != NULL
6602 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6603 && _bfd_elf_eh_frame_present (info))
6605 s = htab->glink_eh_frame;
6606 s->size = sizeof (glink_eh_frame_cie) + 20;
6607 if (bfd_link_pic (info))
6610 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6615 /* We've now determined the sizes of the various dynamic sections.
6616 Allocate memory for them. */
6618 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6620 bfd_boolean strip_section = TRUE;
6622 if ((s->flags & SEC_LINKER_CREATED) == 0)
6625 if (s == htab->elf.splt
6626 || s == htab->elf.sgot)
6628 /* We'd like to strip these sections if they aren't needed, but if
6629 we've exported dynamic symbols from them we must leave them.
6630 It's too late to tell BFD to get rid of the symbols. */
6631 if (htab->elf.hplt != NULL)
6632 strip_section = FALSE;
6633 /* Strip this section if we don't need it; see the
6636 else if (s == htab->elf.iplt
6638 || s == htab->glink_eh_frame
6639 || s == htab->elf.sgotplt
6641 || s == htab->elf.sdynbss
6642 || s == htab->elf.sdynrelro
6643 || s == htab->dynsbss)
6645 /* Strip these too. */
6647 else if (s == htab->sdata[0].section
6648 || s == htab->sdata[1].section)
6650 strip_section = (s->flags & SEC_KEEP) == 0;
6652 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6657 /* Remember whether there are any relocation sections. */
6660 /* We use the reloc_count field as a counter if we need
6661 to copy relocs into the output file. */
6667 /* It's not one of our sections, so don't allocate space. */
6671 if (s->size == 0 && strip_section)
6673 /* If we don't need this section, strip it from the
6674 output file. This is mostly to handle .rela.bss and
6675 .rela.plt. We must create both sections in
6676 create_dynamic_sections, because they must be created
6677 before the linker maps input sections to output
6678 sections. The linker does that before
6679 adjust_dynamic_symbol is called, and it is that
6680 function which decides whether anything needs to go
6681 into these sections. */
6682 s->flags |= SEC_EXCLUDE;
6686 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6689 /* Allocate memory for the section contents. */
6690 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6691 if (s->contents == NULL)
6695 if (htab->elf.dynamic_sections_created)
6697 /* Add some entries to the .dynamic section. We fill in the
6698 values later, in ppc_elf_finish_dynamic_sections, but we
6699 must add the entries now so that we get the correct size for
6700 the .dynamic section. The DT_DEBUG entry is filled in by the
6701 dynamic linker and used by the debugger. */
6702 #define add_dynamic_entry(TAG, VAL) \
6703 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6705 if (bfd_link_executable (info))
6707 if (!add_dynamic_entry (DT_DEBUG, 0))
6711 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6713 if (!add_dynamic_entry (DT_PLTGOT, 0)
6714 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6715 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6716 || !add_dynamic_entry (DT_JMPREL, 0))
6720 if (htab->plt_type == PLT_NEW
6721 && htab->glink != NULL
6722 && htab->glink->size != 0)
6724 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6726 if (!htab->params->no_tls_get_addr_opt
6727 && htab->tls_get_addr != NULL
6728 && htab->tls_get_addr->plt.plist != NULL
6729 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6735 if (!add_dynamic_entry (DT_RELA, 0)
6736 || !add_dynamic_entry (DT_RELASZ, 0)
6737 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6741 /* If any dynamic relocs apply to a read-only section, then we
6742 need a DT_TEXTREL entry. */
6743 if ((info->flags & DF_TEXTREL) == 0)
6744 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6747 if ((info->flags & DF_TEXTREL) != 0)
6749 if (!add_dynamic_entry (DT_TEXTREL, 0))
6752 if (htab->is_vxworks
6753 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6756 #undef add_dynamic_entry
6758 if (htab->glink_eh_frame != NULL
6759 && htab->glink_eh_frame->contents != NULL)
6761 unsigned char *p = htab->glink_eh_frame->contents;
6764 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6765 /* CIE length (rewrite in case little-endian). */
6766 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6767 p += sizeof (glink_eh_frame_cie);
6769 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6770 bfd_put_32 (htab->elf.dynobj, val, p);
6773 val = p - htab->glink_eh_frame->contents;
6774 bfd_put_32 (htab->elf.dynobj, val, p);
6776 /* Offset to .glink. Set later. */
6779 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6784 if (bfd_link_pic (info)
6785 && htab->elf.dynamic_sections_created)
6787 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6789 *p++ = DW_CFA_advance_loc + adv;
6792 *p++ = DW_CFA_advance_loc1;
6795 else if (adv < 65536)
6797 *p++ = DW_CFA_advance_loc2;
6798 bfd_put_16 (htab->elf.dynobj, adv, p);
6803 *p++ = DW_CFA_advance_loc4;
6804 bfd_put_32 (htab->elf.dynobj, adv, p);
6807 *p++ = DW_CFA_register;
6810 *p++ = DW_CFA_advance_loc + 4;
6811 *p++ = DW_CFA_restore_extended;
6814 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6815 == htab->glink_eh_frame->size);
6821 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6822 if it looks like nothing is using them. */
6825 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6827 struct elf_link_hash_entry *sda = lsect->sym;
6829 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6833 s = bfd_get_section_by_name (output_bfd, lsect->name);
6834 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6836 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6837 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6839 sda->def_regular = 0;
6840 /* This is somewhat magic. See elf_link_output_extsym. */
6841 sda->ref_dynamic = 1;
6842 sda->forced_local = 0;
6849 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6851 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6855 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6856 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6861 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6864 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6866 if (h->plt.plist != NULL
6868 && (!h->pointer_equality_needed
6869 || !h->ref_regular_nonweak))
6872 return _bfd_elf_hash_symbol (h);
6875 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6877 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6878 used for some functions that are allowed to break the ABI). */
6879 static const int shared_stub_entry[] =
6881 0x7c0802a6, /* mflr 0 */
6882 0x429f0005, /* bcl 20, 31, .Lxxx */
6883 0x7d8802a6, /* mflr 12 */
6884 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6885 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6886 0x7c0803a6, /* mtlr 0 */
6887 0x7d8903a6, /* mtctr 12 */
6888 0x4e800420, /* bctr */
6891 static const int stub_entry[] =
6893 0x3d800000, /* lis 12,xxx@ha */
6894 0x398c0000, /* addi 12,12,xxx@l */
6895 0x7d8903a6, /* mtctr 12 */
6896 0x4e800420, /* bctr */
6899 struct ppc_elf_relax_info
6901 unsigned int workaround_size;
6902 unsigned int picfixup_size;
6905 /* This function implements long branch trampolines, and the ppc476
6906 icache bug workaround. Any section needing trampolines or patch
6907 space for the workaround has its size extended so that we can
6908 add trampolines at the end of the section. */
6911 ppc_elf_relax_section (bfd *abfd,
6913 struct bfd_link_info *link_info,
6916 struct one_branch_fixup
6918 struct one_branch_fixup *next;
6920 /* Final link, can use the symbol offset. For a
6921 relocatable link we use the symbol's index. */
6926 Elf_Internal_Shdr *symtab_hdr;
6927 bfd_byte *contents = NULL;
6928 Elf_Internal_Sym *isymbuf = NULL;
6929 Elf_Internal_Rela *internal_relocs = NULL;
6930 Elf_Internal_Rela *irel, *irelend = NULL;
6931 struct one_branch_fixup *branch_fixups = NULL;
6932 struct ppc_elf_relax_info *relax_info = NULL;
6933 unsigned changes = 0;
6934 bfd_boolean workaround_change;
6935 struct ppc_elf_link_hash_table *htab;
6936 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6938 bfd_boolean maybe_pasted;
6942 /* No need to do anything with non-alloc or non-code sections. */
6943 if ((isec->flags & SEC_ALLOC) == 0
6944 || (isec->flags & SEC_CODE) == 0
6945 || (isec->flags & SEC_LINKER_CREATED) != 0
6949 /* We cannot represent the required PIC relocs in the output, so don't
6950 do anything. The linker doesn't support mixing -shared and -r
6952 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6955 htab = ppc_elf_hash_table (link_info);
6959 isec->size = (isec->size + 3) & -4;
6960 if (isec->rawsize == 0)
6961 isec->rawsize = isec->size;
6962 trampbase = isec->size;
6964 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6965 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6966 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6968 if (htab->params->ppc476_workaround
6969 || htab->params->pic_fixup > 0)
6971 if (elf_section_data (isec)->sec_info == NULL)
6973 elf_section_data (isec)->sec_info
6974 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6975 if (elf_section_data (isec)->sec_info == NULL)
6978 relax_info = elf_section_data (isec)->sec_info;
6979 trampbase -= relax_info->workaround_size;
6982 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6983 || strcmp (isec->output_section->name, ".fini") == 0);
6984 /* Space for a branch around any trampolines. */
6985 trampoff = trampbase;
6986 if (maybe_pasted && trampbase == isec->rawsize)
6989 symtab_hdr = &elf_symtab_hdr (abfd);
6991 if (htab->params->branch_trampolines
6992 || htab->params->pic_fixup > 0)
6994 /* Get a copy of the native relocations. */
6995 if (isec->reloc_count != 0)
6997 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6998 link_info->keep_memory);
6999 if (internal_relocs == NULL)
7003 got2 = bfd_get_section_by_name (abfd, ".got2");
7005 irelend = internal_relocs + isec->reloc_count;
7006 for (irel = internal_relocs; irel < irelend; irel++)
7008 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
7011 struct one_branch_fixup *f;
7012 size_t insn_offset = 0;
7013 bfd_vma max_branch_offset = 0, val;
7016 struct elf_link_hash_entry *h;
7017 struct plt_entry **plist;
7018 unsigned char sym_type;
7023 case R_PPC_LOCAL24PC:
7024 case R_PPC_PLTREL24:
7025 max_branch_offset = 1 << 25;
7029 case R_PPC_REL14_BRTAKEN:
7030 case R_PPC_REL14_BRNTAKEN:
7031 max_branch_offset = 1 << 15;
7034 case R_PPC_ADDR16_HA:
7035 if (htab->params->pic_fixup > 0)
7043 /* Get the value of the symbol referred to by the reloc. */
7045 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7047 /* A local symbol. */
7048 Elf_Internal_Sym *isym;
7050 /* Read this BFD's local symbols. */
7051 if (isymbuf == NULL)
7053 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7054 if (isymbuf == NULL)
7055 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7056 symtab_hdr->sh_info, 0,
7061 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7062 if (isym->st_shndx == SHN_UNDEF)
7063 tsec = bfd_und_section_ptr;
7064 else if (isym->st_shndx == SHN_ABS)
7065 tsec = bfd_abs_section_ptr;
7066 else if (isym->st_shndx == SHN_COMMON)
7067 tsec = bfd_com_section_ptr;
7069 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7071 toff = isym->st_value;
7072 sym_type = ELF_ST_TYPE (isym->st_info);
7076 /* Global symbol handling. */
7079 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7080 h = elf_sym_hashes (abfd)[indx];
7082 while (h->root.type == bfd_link_hash_indirect
7083 || h->root.type == bfd_link_hash_warning)
7084 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7086 if (h->root.type == bfd_link_hash_defined
7087 || h->root.type == bfd_link_hash_defweak)
7089 tsec = h->root.u.def.section;
7090 toff = h->root.u.def.value;
7092 else if (h->root.type == bfd_link_hash_undefined
7093 || h->root.type == bfd_link_hash_undefweak)
7095 tsec = bfd_und_section_ptr;
7096 toff = bfd_link_relocatable (link_info) ? indx : 0;
7101 /* If this branch is to __tls_get_addr then we may later
7102 optimise away the call. We won't be needing a long-
7103 branch stub in that case. */
7104 if (bfd_link_executable (link_info)
7105 && h == htab->tls_get_addr
7106 && irel != internal_relocs)
7108 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7109 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7110 unsigned int tls_mask = 0;
7112 /* The previous reloc should be one of R_PPC_TLSGD or
7113 R_PPC_TLSLD, or for older object files, a reloc
7114 on the __tls_get_addr arg setup insn. Get tls
7115 mask bits from the symbol on that reloc. */
7116 if (t_symndx < symtab_hdr->sh_info)
7118 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7120 if (local_got_offsets != NULL)
7122 struct plt_entry **local_plt = (struct plt_entry **)
7123 (local_got_offsets + symtab_hdr->sh_info);
7124 char *lgot_masks = (char *)
7125 (local_plt + symtab_hdr->sh_info);
7126 tls_mask = lgot_masks[t_symndx];
7131 struct elf_link_hash_entry *th
7132 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7134 while (th->root.type == bfd_link_hash_indirect
7135 || th->root.type == bfd_link_hash_warning)
7136 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7139 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7142 /* The mask bits tell us if the call will be
7144 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7145 && (t_rtype == R_PPC_TLSGD
7146 || t_rtype == R_PPC_GOT_TLSGD16
7147 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7149 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7150 && (t_rtype == R_PPC_TLSLD
7151 || t_rtype == R_PPC_GOT_TLSLD16
7152 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7159 if (r_type == R_PPC_ADDR16_HA)
7164 && ppc_elf_hash_entry (h)->has_addr16_ha
7165 && ppc_elf_hash_entry (h)->has_addr16_lo)
7166 picfixup_size += 12;
7170 /* The condition here under which we call find_plt_ent must
7171 match that in relocate_section. If we call find_plt_ent here
7172 but not in relocate_section, or vice versa, then the branch
7173 destination used here may be incorrect. */
7177 /* We know is_branch_reloc (r_type) is true. */
7178 if (h->type == STT_GNU_IFUNC
7179 || r_type == R_PPC_PLTREL24)
7180 plist = &h->plt.plist;
7182 else if (sym_type == STT_GNU_IFUNC
7183 && elf_local_got_offsets (abfd) != NULL)
7185 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7186 struct plt_entry **local_plt = (struct plt_entry **)
7187 (local_got_offsets + symtab_hdr->sh_info);
7188 plist = local_plt + ELF32_R_SYM (irel->r_info);
7193 struct plt_entry *ent;
7195 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7196 addend = irel->r_addend;
7197 ent = find_plt_ent (plist, got2, addend);
7200 if (htab->plt_type == PLT_NEW
7202 || !htab->elf.dynamic_sections_created
7203 || h->dynindx == -1)
7206 toff = ent->glink_offset;
7210 tsec = htab->elf.splt;
7211 toff = ent->plt.offset;
7216 /* If the branch and target are in the same section, you have
7217 no hope of adding stubs. We'll error out later should the
7222 /* There probably isn't any reason to handle symbols in
7223 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7224 attribute for a code section, and we are only looking at
7225 branches. However, implement it correctly here as a
7226 reference for other target relax_section functions. */
7227 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7229 /* At this stage in linking, no SEC_MERGE symbol has been
7230 adjusted, so all references to such symbols need to be
7231 passed through _bfd_merged_section_offset. (Later, in
7232 relocate_section, all SEC_MERGE symbols *except* for
7233 section symbols have been adjusted.)
7235 gas may reduce relocations against symbols in SEC_MERGE
7236 sections to a relocation against the section symbol when
7237 the original addend was zero. When the reloc is against
7238 a section symbol we should include the addend in the
7239 offset passed to _bfd_merged_section_offset, since the
7240 location of interest is the original symbol. On the
7241 other hand, an access to "sym+addend" where "sym" is not
7242 a section symbol should not include the addend; Such an
7243 access is presumed to be an offset from "sym"; The
7244 location of interest is just "sym". */
7245 if (sym_type == STT_SECTION)
7246 toff += irel->r_addend;
7249 = _bfd_merged_section_offset (abfd, &tsec,
7250 elf_section_data (tsec)->sec_info,
7253 if (sym_type != STT_SECTION)
7254 toff += irel->r_addend;
7256 /* PLTREL24 addends are special. */
7257 else if (r_type != R_PPC_PLTREL24)
7258 toff += irel->r_addend;
7260 /* Attempted -shared link of non-pic code loses. */
7261 if ((!bfd_link_relocatable (link_info)
7262 && tsec == bfd_und_section_ptr)
7263 || tsec->output_section == NULL
7264 || (tsec->owner != NULL
7265 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7268 roff = irel->r_offset;
7270 /* If the branch is in range, no need to do anything. */
7271 if (tsec != bfd_und_section_ptr
7272 && (!bfd_link_relocatable (link_info)
7273 /* A relocatable link may have sections moved during
7274 final link, so do not presume they remain in range. */
7275 || tsec->output_section == isec->output_section))
7277 bfd_vma symaddr, reladdr;
7279 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7280 reladdr = isec->output_section->vma + isec->output_offset + roff;
7281 if (symaddr - reladdr + max_branch_offset
7282 < 2 * max_branch_offset)
7286 /* Look for an existing fixup to this address. */
7287 for (f = branch_fixups; f ; f = f->next)
7288 if (f->tsec == tsec && f->toff == toff)
7294 unsigned long stub_rtype;
7296 val = trampoff - roff;
7297 if (val >= max_branch_offset)
7298 /* Oh dear, we can't reach a trampoline. Don't try to add
7299 one. We'll report an error later. */
7302 if (bfd_link_pic (link_info))
7304 size = 4 * ARRAY_SIZE (shared_stub_entry);
7309 size = 4 * ARRAY_SIZE (stub_entry);
7312 stub_rtype = R_PPC_RELAX;
7313 if (tsec == htab->elf.splt
7314 || tsec == htab->glink)
7316 stub_rtype = R_PPC_RELAX_PLT;
7317 if (r_type == R_PPC_PLTREL24)
7318 stub_rtype = R_PPC_RELAX_PLTREL24;
7321 /* Hijack the old relocation. Since we need two
7322 relocations for this use a "composite" reloc. */
7323 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7325 irel->r_offset = trampoff + insn_offset;
7326 if (r_type == R_PPC_PLTREL24
7327 && stub_rtype != R_PPC_RELAX_PLTREL24)
7330 /* Record the fixup so we don't do it again this section. */
7331 f = bfd_malloc (sizeof (*f));
7332 f->next = branch_fixups;
7335 f->trampoff = trampoff;
7343 val = f->trampoff - roff;
7344 if (val >= max_branch_offset)
7347 /* Nop out the reloc, since we're finalizing things here. */
7348 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7351 /* Get the section contents. */
7352 if (contents == NULL)
7354 /* Get cached copy if it exists. */
7355 if (elf_section_data (isec)->this_hdr.contents != NULL)
7356 contents = elf_section_data (isec)->this_hdr.contents;
7357 /* Go get them off disk. */
7358 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7362 /* Fix up the existing branch to hit the trampoline. */
7363 hit_addr = contents + roff;
7367 case R_PPC_LOCAL24PC:
7368 case R_PPC_PLTREL24:
7369 t0 = bfd_get_32 (abfd, hit_addr);
7371 t0 |= val & 0x3fffffc;
7372 bfd_put_32 (abfd, t0, hit_addr);
7376 case R_PPC_REL14_BRTAKEN:
7377 case R_PPC_REL14_BRNTAKEN:
7378 t0 = bfd_get_32 (abfd, hit_addr);
7381 bfd_put_32 (abfd, t0, hit_addr);
7386 while (branch_fixups != NULL)
7388 struct one_branch_fixup *f = branch_fixups;
7389 branch_fixups = branch_fixups->next;
7394 workaround_change = FALSE;
7396 if (htab->params->ppc476_workaround
7397 && (!bfd_link_relocatable (link_info)
7398 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7400 bfd_vma addr, end_addr;
7401 unsigned int crossings;
7402 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7404 addr = isec->output_section->vma + isec->output_offset;
7405 end_addr = addr + trampoff;
7407 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7410 /* Keep space aligned, to ensure the patch code itself does
7411 not cross a page. Don't decrease size calculated on a
7412 previous pass as otherwise we might never settle on a layout. */
7413 newsize = 15 - ((end_addr - 1) & 15);
7414 newsize += crossings * 16;
7415 if (relax_info->workaround_size < newsize)
7417 relax_info->workaround_size = newsize;
7418 workaround_change = TRUE;
7420 /* Ensure relocate_section is called. */
7421 isec->flags |= SEC_RELOC;
7423 newsize = trampoff + relax_info->workaround_size;
7426 if (htab->params->pic_fixup > 0)
7428 picfixup_size -= relax_info->picfixup_size;
7429 if (picfixup_size != 0)
7430 relax_info->picfixup_size += picfixup_size;
7431 newsize += relax_info->picfixup_size;
7434 if (changes != 0 || picfixup_size != 0 || workaround_change)
7435 isec->size = newsize;
7438 && symtab_hdr->contents != (unsigned char *) isymbuf)
7440 if (! link_info->keep_memory)
7444 /* Cache the symbols for elf_link_input_bfd. */
7445 symtab_hdr->contents = (unsigned char *) isymbuf;
7449 if (contents != NULL
7450 && elf_section_data (isec)->this_hdr.contents != contents)
7452 if (!changes && !link_info->keep_memory)
7456 /* Cache the section contents for elf_link_input_bfd. */
7457 elf_section_data (isec)->this_hdr.contents = contents;
7461 changes += picfixup_size;
7464 /* Append sufficient NOP relocs so we can write out relocation
7465 information for the trampolines. */
7466 Elf_Internal_Shdr *rel_hdr;
7467 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7468 * sizeof (*new_relocs));
7473 memcpy (new_relocs, internal_relocs,
7474 isec->reloc_count * sizeof (*new_relocs));
7475 for (ix = changes; ix--;)
7477 irel = new_relocs + ix + isec->reloc_count;
7479 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7481 if (internal_relocs != elf_section_data (isec)->relocs)
7482 free (internal_relocs);
7483 elf_section_data (isec)->relocs = new_relocs;
7484 isec->reloc_count += changes;
7485 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7486 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7488 else if (internal_relocs != NULL
7489 && elf_section_data (isec)->relocs != internal_relocs)
7490 free (internal_relocs);
7492 *again = changes != 0 || workaround_change;
7496 while (branch_fixups != NULL)
7498 struct one_branch_fixup *f = branch_fixups;
7499 branch_fixups = branch_fixups->next;
7502 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7504 if (contents != NULL
7505 && elf_section_data (isec)->this_hdr.contents != contents)
7507 if (internal_relocs != NULL
7508 && elf_section_data (isec)->relocs != internal_relocs)
7509 free (internal_relocs);
7513 /* What to do when ld finds relocations against symbols defined in
7514 discarded sections. */
7517 ppc_elf_action_discarded (asection *sec)
7519 if (strcmp (".fixup", sec->name) == 0)
7522 if (strcmp (".got2", sec->name) == 0)
7525 return _bfd_elf_default_action_discarded (sec);
7528 /* Fill in the address for a pointer generated in a linker section. */
7531 elf_finish_pointer_linker_section (bfd *input_bfd,
7532 elf_linker_section_t *lsect,
7533 struct elf_link_hash_entry *h,
7535 const Elf_Internal_Rela *rel)
7537 elf_linker_section_pointers_t *linker_section_ptr;
7539 BFD_ASSERT (lsect != NULL);
7543 /* Handle global symbol. */
7544 struct ppc_elf_link_hash_entry *eh;
7546 eh = (struct ppc_elf_link_hash_entry *) h;
7547 BFD_ASSERT (eh->elf.def_regular);
7548 linker_section_ptr = eh->linker_section_pointer;
7552 /* Handle local symbol. */
7553 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7555 BFD_ASSERT (is_ppc_elf (input_bfd));
7556 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7557 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7560 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7563 BFD_ASSERT (linker_section_ptr != NULL);
7565 /* Offset will always be a multiple of four, so use the bottom bit
7566 as a "written" flag. */
7567 if ((linker_section_ptr->offset & 1) == 0)
7569 bfd_put_32 (lsect->section->owner,
7570 relocation + linker_section_ptr->addend,
7571 lsect->section->contents + linker_section_ptr->offset);
7572 linker_section_ptr->offset += 1;
7575 relocation = (lsect->section->output_section->vma
7576 + lsect->section->output_offset
7577 + linker_section_ptr->offset - 1
7578 - SYM_VAL (lsect->sym));
7582 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7583 lsect->name, (long) relocation, (long) relocation);
7589 #define PPC_LO(v) ((v) & 0xffff)
7590 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7591 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7594 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7595 struct bfd_link_info *info)
7597 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7598 bfd *output_bfd = info->output_bfd;
7601 plt = ((ent->plt.offset & ~1)
7602 + plt_sec->output_section->vma
7603 + plt_sec->output_offset);
7605 if (bfd_link_pic (info))
7609 if (ent->addend >= 32768)
7611 + ent->sec->output_section->vma
7612 + ent->sec->output_offset);
7613 else if (htab->elf.hgot != NULL)
7614 got = SYM_VAL (htab->elf.hgot);
7618 if (plt + 0x8000 < 0x10000)
7620 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7622 bfd_put_32 (output_bfd, MTCTR_11, p);
7624 bfd_put_32 (output_bfd, BCTR, p);
7626 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7631 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7633 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7635 bfd_put_32 (output_bfd, MTCTR_11, p);
7637 bfd_put_32 (output_bfd, BCTR, p);
7643 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7645 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7647 bfd_put_32 (output_bfd, MTCTR_11, p);
7649 bfd_put_32 (output_bfd, BCTR, p);
7654 /* Return true if symbol is defined statically. */
7657 is_static_defined (struct elf_link_hash_entry *h)
7659 return ((h->root.type == bfd_link_hash_defined
7660 || h->root.type == bfd_link_hash_defweak)
7661 && h->root.u.def.section != NULL
7662 && h->root.u.def.section->output_section != NULL);
7665 /* If INSN is an opcode that may be used with an @tls operand, return
7666 the transformed insn for TLS optimisation, otherwise return 0. If
7667 REG is non-zero only match an insn with RB or RA equal to REG. */
7670 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7674 if ((insn & (0x3f << 26)) != 31 << 26)
7677 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7678 rtra = insn & ((1 << 26) - (1 << 16));
7679 else if (((insn >> 16) & 0x1f) == reg)
7680 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7684 if ((insn & (0x3ff << 1)) == 266 << 1)
7687 else if ((insn & (0x1f << 1)) == 23 << 1
7688 && ((insn & (0x1f << 6)) < 14 << 6
7689 || ((insn & (0x1f << 6)) >= 16 << 6
7690 && (insn & (0x1f << 6)) < 24 << 6)))
7691 /* load and store indexed -> dform. */
7692 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7693 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7694 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7695 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7696 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7698 insn = (58 << 26) | 2;
7705 /* If INSN is an opcode that may be used with an @tprel operand, return
7706 the transformed insn for an undefined weak symbol, ie. with the
7707 thread pointer REG operand removed. Otherwise return 0. */
7710 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7712 if ((insn & (0x1f << 16)) == reg << 16
7713 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7714 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7715 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7716 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7717 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7718 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7719 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7720 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7721 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7722 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7723 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7724 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7725 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7726 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7727 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7728 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7730 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7731 && ((insn & 3) == 0 || (insn & 3) == 3))))
7733 insn &= ~(0x1f << 16);
7735 else if ((insn & (0x1f << 21)) == reg << 21
7736 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7737 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7738 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7740 insn &= ~(0x1f << 21);
7741 insn |= (insn & (0x1f << 16)) << 5;
7742 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7743 insn -= 2 >> 26; /* convert to ori,oris */
7751 is_insn_ds_form (unsigned int insn)
7753 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7754 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7755 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7756 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7760 is_insn_dq_form (unsigned int insn)
7762 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7763 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7764 && (insn & 3) == 1));
7767 /* The RELOCATE_SECTION function is called by the ELF backend linker
7768 to handle the relocations for a section.
7770 The relocs are always passed as Rela structures; if the section
7771 actually uses Rel structures, the r_addend field will always be
7774 This function is responsible for adjust the section contents as
7775 necessary, and (if using Rela relocs and generating a
7776 relocatable output file) adjusting the reloc addend as
7779 This function does not have to worry about setting the reloc
7780 address or the reloc symbol index.
7782 LOCAL_SYMS is a pointer to the swapped in local symbols.
7784 LOCAL_SECTIONS is an array giving the section in the input file
7785 corresponding to the st_shndx field of each local symbol.
7787 The global hash table entry for the global symbols can be found
7788 via elf_sym_hashes (input_bfd).
7790 When generating relocatable output, this function must handle
7791 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7792 going to be the section symbol corresponding to the output
7793 section, which means that the addend must be adjusted
7797 ppc_elf_relocate_section (bfd *output_bfd,
7798 struct bfd_link_info *info,
7800 asection *input_section,
7802 Elf_Internal_Rela *relocs,
7803 Elf_Internal_Sym *local_syms,
7804 asection **local_sections)
7806 Elf_Internal_Shdr *symtab_hdr;
7807 struct elf_link_hash_entry **sym_hashes;
7808 struct ppc_elf_link_hash_table *htab;
7809 Elf_Internal_Rela *rel;
7810 Elf_Internal_Rela *wrel;
7811 Elf_Internal_Rela *relend;
7812 Elf_Internal_Rela outrel;
7814 bfd_vma *local_got_offsets;
7815 bfd_boolean ret = TRUE;
7816 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7817 bfd_boolean is_vxworks_tls;
7818 unsigned int picfixup_size = 0;
7819 struct ppc_elf_relax_info *relax_info = NULL;
7822 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7823 "%ld relocations%s",
7824 input_bfd, input_section,
7825 (long) input_section->reloc_count,
7826 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7829 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7831 /* Initialize howto table if not already done. */
7832 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7833 ppc_elf_howto_init ();
7835 htab = ppc_elf_hash_table (info);
7836 local_got_offsets = elf_local_got_offsets (input_bfd);
7837 symtab_hdr = &elf_symtab_hdr (input_bfd);
7838 sym_hashes = elf_sym_hashes (input_bfd);
7839 /* We have to handle relocations in vxworks .tls_vars sections
7840 specially, because the dynamic loader is 'weird'. */
7841 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7842 && !strcmp (input_section->output_section->name,
7844 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7845 relax_info = elf_section_data (input_section)->sec_info;
7846 rel = wrel = relocs;
7847 relend = relocs + input_section->reloc_count;
7848 for (; rel < relend; wrel++, rel++)
7850 enum elf_ppc_reloc_type r_type;
7852 bfd_reloc_status_type r;
7853 Elf_Internal_Sym *sym;
7855 struct elf_link_hash_entry *h;
7856 const char *sym_name;
7857 reloc_howto_type *howto;
7858 unsigned long r_symndx;
7860 bfd_vma branch_bit, from;
7861 bfd_boolean unresolved_reloc;
7863 unsigned int tls_type, tls_mask, tls_gd;
7864 struct plt_entry **ifunc;
7865 struct reloc_howto_struct alt_howto;
7868 r_type = ELF32_R_TYPE (rel->r_info);
7872 unresolved_reloc = FALSE;
7874 r_symndx = ELF32_R_SYM (rel->r_info);
7876 if (r_symndx < symtab_hdr->sh_info)
7878 sym = local_syms + r_symndx;
7879 sec = local_sections[r_symndx];
7880 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7882 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7886 bfd_boolean ignored;
7888 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7889 r_symndx, symtab_hdr, sym_hashes,
7891 unresolved_reloc, warned, ignored);
7893 sym_name = h->root.root.string;
7896 if (sec != NULL && discarded_section (sec))
7898 /* For relocs against symbols from removed linkonce sections,
7899 or sections discarded by a linker script, we just want the
7900 section contents zeroed. Avoid any special processing. */
7902 if (r_type < R_PPC_max)
7903 howto = ppc_elf_howto_table[r_type];
7905 _bfd_clear_contents (howto, input_bfd, input_section,
7906 contents + rel->r_offset);
7907 wrel->r_offset = rel->r_offset;
7911 /* For ld -r, remove relocations in debug sections against
7912 sections defined in discarded sections. Not done for
7913 non-debug to preserve relocs in .eh_frame which the
7914 eh_frame editing code expects to be present. */
7915 if (bfd_link_relocatable (info)
7916 && (input_section->flags & SEC_DEBUGGING))
7922 if (bfd_link_relocatable (info))
7925 && r_type == R_PPC_PLTREL24
7926 && rel->r_addend != 0)
7928 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7929 addend specifies the GOT pointer offset within .got2. */
7930 rel->r_addend += got2->output_offset;
7932 if (r_type != R_PPC_RELAX_PLT
7933 && r_type != R_PPC_RELAX_PLTREL24
7934 && r_type != R_PPC_RELAX)
7938 /* TLS optimizations. Replace instruction sequences and relocs
7939 based on information we collected in tls_optimize. We edit
7940 RELOCS so that --emit-relocs will output something sensible
7941 for the final instruction stream. */
7945 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7946 else if (local_got_offsets != NULL)
7948 struct plt_entry **local_plt;
7951 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7952 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7953 tls_mask = lgot_masks[r_symndx];
7956 /* Ensure reloc mapping code below stays sane. */
7957 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7958 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7959 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7960 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7961 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7962 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7963 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7964 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7971 case R_PPC_GOT_TPREL16:
7972 case R_PPC_GOT_TPREL16_LO:
7973 if ((tls_mask & TLS_TLS) != 0
7974 && (tls_mask & TLS_TPREL) == 0)
7978 insn = bfd_get_32 (input_bfd,
7979 contents + rel->r_offset - d_offset);
7981 insn |= 0x3c020000; /* addis 0,2,0 */
7982 bfd_put_32 (input_bfd, insn,
7983 contents + rel->r_offset - d_offset);
7984 r_type = R_PPC_TPREL16_HA;
7985 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7990 if ((tls_mask & TLS_TLS) != 0
7991 && (tls_mask & TLS_TPREL) == 0)
7995 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7996 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7999 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8000 r_type = R_PPC_TPREL16_LO;
8001 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8003 /* Was PPC_TLS which sits on insn boundary, now
8004 PPC_TPREL16_LO which is at low-order half-word. */
8005 rel->r_offset += d_offset;
8009 case R_PPC_GOT_TLSGD16_HI:
8010 case R_PPC_GOT_TLSGD16_HA:
8011 tls_gd = TLS_TPRELGD;
8012 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8016 case R_PPC_GOT_TLSLD16_HI:
8017 case R_PPC_GOT_TLSLD16_HA:
8018 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8021 if ((tls_mask & tls_gd) != 0)
8022 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8023 + R_PPC_GOT_TPREL16);
8026 rel->r_offset -= d_offset;
8027 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
8028 r_type = R_PPC_NONE;
8030 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8034 case R_PPC_GOT_TLSGD16:
8035 case R_PPC_GOT_TLSGD16_LO:
8036 tls_gd = TLS_TPRELGD;
8037 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8041 case R_PPC_GOT_TLSLD16:
8042 case R_PPC_GOT_TLSLD16_LO:
8043 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8045 unsigned int insn1, insn2;
8049 offset = (bfd_vma) -1;
8050 /* If not using the newer R_PPC_TLSGD/LD to mark
8051 __tls_get_addr calls, we must trust that the call
8052 stays with its arg setup insns, ie. that the next
8053 reloc is the __tls_get_addr call associated with
8054 the current reloc. Edit both insns. */
8055 if (input_section->has_tls_get_addr_call
8057 && branch_reloc_hash_match (input_bfd, rel + 1,
8058 htab->tls_get_addr))
8059 offset = rel[1].r_offset;
8060 /* We read the low GOT_TLS insn because we need to keep
8061 the destination reg. It may be something other than
8062 the usual r3, and moved to r3 before the call by
8063 intervening code. */
8064 insn1 = bfd_get_32 (input_bfd,
8065 contents + rel->r_offset - d_offset);
8066 if ((tls_mask & tls_gd) != 0)
8069 insn1 &= (0x1f << 21) | (0x1f << 16);
8070 insn1 |= 32 << 26; /* lwz */
8071 if (offset != (bfd_vma) -1)
8073 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8074 insn2 = 0x7c631214; /* add 3,3,2 */
8075 bfd_put_32 (input_bfd, insn2, contents + offset);
8077 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8078 + R_PPC_GOT_TPREL16);
8079 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8084 insn1 &= 0x1f << 21;
8085 insn1 |= 0x3c020000; /* addis r,2,0 */
8088 /* Was an LD reloc. */
8090 r_symndx < symtab_hdr->sh_info;
8092 if (local_sections[r_symndx] == sec)
8094 if (r_symndx >= symtab_hdr->sh_info)
8095 r_symndx = STN_UNDEF;
8096 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8097 if (r_symndx != STN_UNDEF)
8098 rel->r_addend -= (local_syms[r_symndx].st_value
8099 + sec->output_offset
8100 + sec->output_section->vma);
8102 r_type = R_PPC_TPREL16_HA;
8103 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8104 if (offset != (bfd_vma) -1)
8106 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8107 rel[1].r_offset = offset + d_offset;
8108 rel[1].r_addend = rel->r_addend;
8109 insn2 = 0x38630000; /* addi 3,3,0 */
8110 bfd_put_32 (input_bfd, insn2, contents + offset);
8113 bfd_put_32 (input_bfd, insn1,
8114 contents + rel->r_offset - d_offset);
8117 /* We changed the symbol on an LD reloc. Start over
8118 in order to get h, sym, sec etc. right. */
8125 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8128 bfd_vma offset = rel->r_offset;
8130 if ((tls_mask & TLS_TPRELGD) != 0)
8133 r_type = R_PPC_NONE;
8134 insn2 = 0x7c631214; /* add 3,3,2 */
8139 r_type = R_PPC_TPREL16_LO;
8140 rel->r_offset += d_offset;
8141 insn2 = 0x38630000; /* addi 3,3,0 */
8143 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8144 bfd_put_32 (input_bfd, insn2, contents + offset);
8145 /* Zap the reloc on the _tls_get_addr call too. */
8146 BFD_ASSERT (offset == rel[1].r_offset);
8147 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8152 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8157 r_symndx < symtab_hdr->sh_info;
8159 if (local_sections[r_symndx] == sec)
8161 if (r_symndx >= symtab_hdr->sh_info)
8162 r_symndx = STN_UNDEF;
8163 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8164 if (r_symndx != STN_UNDEF)
8165 rel->r_addend -= (local_syms[r_symndx].st_value
8166 + sec->output_offset
8167 + sec->output_section->vma);
8169 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8170 rel->r_offset += d_offset;
8171 insn2 = 0x38630000; /* addi 3,3,0 */
8172 bfd_put_32 (input_bfd, insn2,
8173 contents + rel->r_offset - d_offset);
8174 /* Zap the reloc on the _tls_get_addr call too. */
8175 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8176 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8182 /* Handle other relocations that tweak non-addend part of insn. */
8189 /* Branch taken prediction relocations. */
8190 case R_PPC_ADDR14_BRTAKEN:
8191 case R_PPC_REL14_BRTAKEN:
8192 branch_bit = BRANCH_PREDICT_BIT;
8195 /* Branch not taken prediction relocations. */
8196 case R_PPC_ADDR14_BRNTAKEN:
8197 case R_PPC_REL14_BRNTAKEN:
8201 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8202 insn &= ~BRANCH_PREDICT_BIT;
8205 from = (rel->r_offset
8206 + input_section->output_offset
8207 + input_section->output_section->vma);
8209 /* Invert 'y' bit if not the default. */
8210 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8211 insn ^= BRANCH_PREDICT_BIT;
8213 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8218 if (ELIMINATE_COPY_RELOCS
8222 && ppc_elf_hash_entry (h)->has_addr16_ha
8223 && ppc_elf_hash_entry (h)->has_addr16_lo
8224 && htab->params->pic_fixup > 0)
8226 /* Convert lis;addi or lis;load/store accessing a protected
8227 variable defined in a shared library to PIC. */
8230 if (r_type == R_PPC_ADDR16_HA)
8232 insn = bfd_get_32 (input_bfd,
8233 contents + rel->r_offset - d_offset);
8234 if ((insn & (0x3f << 26)) == (15u << 26)
8235 && (insn & (0x1f << 16)) == 0 /* lis */)
8241 p = (contents + input_section->size
8242 - relax_info->workaround_size
8243 - relax_info->picfixup_size
8245 off = (p - contents) - (rel->r_offset - d_offset);
8246 if (off > 0x1fffffc || (off & 3) != 0)
8247 info->callbacks->einfo
8248 (_("%H: fixup branch overflow\n"),
8249 input_bfd, input_section, rel->r_offset);
8251 bfd_put_32 (input_bfd, B | off,
8252 contents + rel->r_offset - d_offset);
8253 got_addr = (htab->elf.sgot->output_section->vma
8254 + htab->elf.sgot->output_offset
8255 + (h->got.offset & ~1));
8256 wrel->r_offset = (p - contents) + d_offset;
8257 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8258 wrel->r_addend = got_addr;
8260 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8261 bfd_put_32 (input_bfd, insn, p);
8263 /* Convert lis to lwz, loading address from GOT. */
8265 insn ^= (32u ^ 15u) << 26;
8266 insn |= (insn & (0x1f << 21)) >> 5;
8267 insn |= got_addr & 0xffff;
8268 bfd_put_32 (input_bfd, insn, p + 4);
8270 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8271 picfixup_size += 12;
8273 /* Use one of the spare relocs, so --emit-relocs
8274 output is reasonable. */
8275 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8277 rel->r_offset = wrel[-1].r_offset + 4;
8278 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8279 rel->r_addend = wrel[-1].r_addend;
8281 /* Continue on as if we had a got reloc, to output
8283 r_type = R_PPC_GOT16_LO;
8286 info->callbacks->einfo
8287 /* xgettext:c-format */
8288 (_("%H: error: %s with unexpected instruction %x\n"),
8289 input_bfd, input_section, rel->r_offset,
8290 "R_PPC_ADDR16_HA", insn);
8292 else if (r_type == R_PPC_ADDR16_LO)
8294 insn = bfd_get_32 (input_bfd,
8295 contents + rel->r_offset - d_offset);
8296 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8297 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8298 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8299 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8300 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8301 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8302 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8303 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8304 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8305 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8306 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8307 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8308 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8309 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8310 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8312 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8313 && ((insn & 3) == 0 || (insn & 3) == 3)))
8315 /* Arrange to apply the reloc addend, if any. */
8317 unresolved_reloc = FALSE;
8318 rel->r_info = ELF32_R_INFO (0, r_type);
8321 info->callbacks->einfo
8322 /* xgettext:c-format */
8323 (_("%H: error: %s with unexpected instruction %x\n"),
8324 input_bfd, input_section, rel->r_offset,
8325 "R_PPC_ADDR16_LO", insn);
8330 if (!htab->is_vxworks)
8332 struct plt_entry *ent;
8336 if (h->type == STT_GNU_IFUNC)
8337 ifunc = &h->plt.plist;
8339 else if (local_got_offsets != NULL
8340 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8342 struct plt_entry **local_plt;
8344 local_plt = (struct plt_entry **) (local_got_offsets
8345 + symtab_hdr->sh_info);
8346 ifunc = local_plt + r_symndx;
8351 && (!bfd_link_pic (info)
8352 || is_branch_reloc (r_type)))
8355 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8356 addend = rel->r_addend;
8357 ent = find_plt_ent (ifunc, got2, addend);
8361 if (bfd_link_pic (info)
8363 && htab->plt_type != PLT_NEW
8364 && (!htab->elf.dynamic_sections_created
8366 || h->dynindx == -1))
8368 /* Uh oh, we are going to create a pic glink stub
8369 for an ifunc (here for h == NULL and later in
8370 finish_dynamic_symbol for h != NULL), and
8371 apparently are using code compiled with
8372 -mbss-plt. The difficulty is that -mbss-plt code
8373 gives no indication via a magic PLTREL24 addend
8374 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8375 is pointing into a .got2 section (and how far
8377 info->callbacks->einfo
8378 /* xgettext:c-format */
8379 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8380 input_bfd, input_section, rel->r_offset, sym_name);
8382 if (h == NULL && (ent->plt.offset & 1) == 0)
8384 Elf_Internal_Rela rela;
8387 rela.r_offset = (htab->elf.iplt->output_section->vma
8388 + htab->elf.iplt->output_offset
8390 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8391 rela.r_addend = relocation;
8392 loc = htab->elf.irelplt->contents;
8393 loc += (htab->elf.irelplt->reloc_count++
8394 * sizeof (Elf32_External_Rela));
8395 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8396 htab->local_ifunc_resolver = 1;
8398 ent->plt.offset |= 1;
8400 if (h == NULL && (ent->glink_offset & 1) == 0)
8402 unsigned char *p = ((unsigned char *) htab->glink->contents
8403 + ent->glink_offset);
8404 write_glink_stub (ent, htab->elf.iplt, p, info);
8405 ent->glink_offset |= 1;
8408 unresolved_reloc = FALSE;
8409 if (htab->plt_type == PLT_NEW
8410 || !htab->elf.dynamic_sections_created
8412 || h->dynindx == -1)
8413 relocation = (htab->glink->output_section->vma
8414 + htab->glink->output_offset
8415 + (ent->glink_offset & ~1));
8417 relocation = (htab->elf.splt->output_section->vma
8418 + htab->elf.splt->output_offset
8423 addend = rel->r_addend;
8426 if (r_type < R_PPC_max)
8427 howto = ppc_elf_howto_table[r_type];
8431 info->callbacks->einfo
8432 /* xgettext:c-format */
8433 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8434 input_bfd, (int) r_type, sym_name);
8436 bfd_set_error (bfd_error_bad_value);
8444 case R_PPC_EMB_MRKREF:
8445 case R_PPC_GNU_VTINHERIT:
8446 case R_PPC_GNU_VTENTRY:
8449 /* GOT16 relocations. Like an ADDR16 using the symbol's
8450 address in the GOT as relocation value instead of the
8451 symbol's value itself. Also, create a GOT entry for the
8452 symbol and put the symbol value there. */
8453 case R_PPC_GOT_TLSGD16:
8454 case R_PPC_GOT_TLSGD16_LO:
8455 case R_PPC_GOT_TLSGD16_HI:
8456 case R_PPC_GOT_TLSGD16_HA:
8457 tls_type = TLS_TLS | TLS_GD;
8460 case R_PPC_GOT_TLSLD16:
8461 case R_PPC_GOT_TLSLD16_LO:
8462 case R_PPC_GOT_TLSLD16_HI:
8463 case R_PPC_GOT_TLSLD16_HA:
8464 tls_type = TLS_TLS | TLS_LD;
8467 case R_PPC_GOT_TPREL16:
8468 case R_PPC_GOT_TPREL16_LO:
8469 case R_PPC_GOT_TPREL16_HI:
8470 case R_PPC_GOT_TPREL16_HA:
8471 tls_type = TLS_TLS | TLS_TPREL;
8474 case R_PPC_GOT_DTPREL16:
8475 case R_PPC_GOT_DTPREL16_LO:
8476 case R_PPC_GOT_DTPREL16_HI:
8477 case R_PPC_GOT_DTPREL16_HA:
8478 tls_type = TLS_TLS | TLS_DTPREL;
8482 case R_PPC_GOT16_LO:
8483 case R_PPC_GOT16_HI:
8484 case R_PPC_GOT16_HA:
8488 /* Relocation is to the entry for this symbol in the global
8494 if (htab->elf.sgot == NULL)
8498 if (tls_type == (TLS_TLS | TLS_LD)
8500 || !h->def_dynamic))
8501 offp = &htab->tlsld_got.offset;
8504 if (!htab->elf.dynamic_sections_created
8506 || SYMBOL_REFERENCES_LOCAL (info, h)
8507 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8508 && h->root.type == bfd_link_hash_undefweak))
8509 /* This is actually a static link, or it is a
8510 -Bsymbolic link and the symbol is defined
8511 locally, or the symbol was forced to be local
8512 because of a version file. */
8517 unresolved_reloc = FALSE;
8519 offp = &h->got.offset;
8523 if (local_got_offsets == NULL)
8525 offp = &local_got_offsets[r_symndx];
8528 /* The offset must always be a multiple of 4. We use the
8529 least significant bit to record whether we have already
8530 processed this entry. */
8536 unsigned int tls_m = (tls_mask
8537 & (TLS_LD | TLS_GD | TLS_DTPREL
8538 | TLS_TPREL | TLS_TPRELGD));
8540 if (offp == &htab->tlsld_got.offset)
8546 /* We might have multiple got entries for this sym.
8547 Initialize them all. */
8552 if ((tls_m & TLS_LD) != 0)
8554 tls_ty = TLS_TLS | TLS_LD;
8557 else if ((tls_m & TLS_GD) != 0)
8559 tls_ty = TLS_TLS | TLS_GD;
8562 else if ((tls_m & TLS_DTPREL) != 0)
8564 tls_ty = TLS_TLS | TLS_DTPREL;
8565 tls_m &= ~TLS_DTPREL;
8567 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8569 tls_ty = TLS_TLS | TLS_TPREL;
8573 /* Generate relocs for the dynamic linker. */
8575 || (bfd_link_pic (info)
8577 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8578 || h->root.type != bfd_link_hash_undefweak
8579 || offp == &htab->tlsld_got.offset)))
8581 asection *rsec = htab->elf.srelgot;
8586 rsec = htab->elf.irelplt;
8588 htab->local_ifunc_resolver = 1;
8589 else if (is_static_defined (h))
8590 htab->maybe_local_ifunc_resolver = 1;
8592 outrel.r_offset = (htab->elf.sgot->output_section->vma
8593 + htab->elf.sgot->output_offset
8595 outrel.r_addend = 0;
8596 if (tls_ty & (TLS_LD | TLS_GD))
8598 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8599 if (tls_ty == (TLS_TLS | TLS_GD))
8601 loc = rsec->contents;
8602 loc += (rsec->reloc_count++
8603 * sizeof (Elf32_External_Rela));
8604 bfd_elf32_swap_reloca_out (output_bfd,
8606 outrel.r_offset += 4;
8608 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8611 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8612 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8613 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8614 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8616 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8617 else if (ifunc != NULL)
8618 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8620 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8621 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8623 outrel.r_addend += relocation;
8624 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8626 if (htab->elf.tls_sec == NULL)
8627 outrel.r_addend = 0;
8629 outrel.r_addend -= htab->elf.tls_sec->vma;
8632 loc = rsec->contents;
8633 loc += (rsec->reloc_count++
8634 * sizeof (Elf32_External_Rela));
8635 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8638 /* Init the .got section contents if we're not
8639 emitting a reloc. */
8642 bfd_vma value = relocation;
8643 int tlsopt = (htab->plt_type == PLT_NEW
8644 && !htab->params->no_tls_get_addr_opt
8645 && htab->tls_get_addr != NULL
8646 && htab->tls_get_addr->plt.plist != NULL);
8650 if (htab->elf.tls_sec == NULL)
8654 if (tls_ty & TLS_LD)
8657 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8658 if ((tls_ty & TLS_TPREL)
8659 || (tlsopt && !(tls_ty & TLS_DTPREL)))
8660 value += DTP_OFFSET - TP_OFFSET;
8663 if (tls_ty & (TLS_LD | TLS_GD))
8665 bfd_put_32 (input_bfd, value,
8666 htab->elf.sgot->contents + off + 4);
8670 bfd_put_32 (input_bfd, value,
8671 htab->elf.sgot->contents + off);
8675 if (tls_ty & (TLS_LD | TLS_GD))
8684 if (off >= (bfd_vma) -2)
8687 if ((tls_type & TLS_TLS) != 0)
8689 if (tls_type != (TLS_TLS | TLS_LD))
8691 if ((tls_mask & TLS_LD) != 0
8693 || !h->def_dynamic))
8695 if (tls_type != (TLS_TLS | TLS_GD))
8697 if ((tls_mask & TLS_GD) != 0)
8699 if (tls_type != (TLS_TLS | TLS_DTPREL))
8701 if ((tls_mask & TLS_DTPREL) != 0)
8708 /* If here for a picfixup, we're done. */
8709 if (r_type != ELF32_R_TYPE (rel->r_info))
8712 relocation = (htab->elf.sgot->output_section->vma
8713 + htab->elf.sgot->output_offset
8715 - SYM_VAL (htab->elf.hgot));
8717 /* Addends on got relocations don't make much sense.
8718 x+off@got is actually x@got+off, and since the got is
8719 generated by a hash table traversal, the value in the
8720 got at entry m+n bears little relation to the entry m. */
8722 info->callbacks->einfo
8723 /* xgettext:c-format */
8724 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8725 input_bfd, input_section, rel->r_offset,
8731 /* Relocations that need no special processing. */
8732 case R_PPC_LOCAL24PC:
8733 /* It makes no sense to point a local relocation
8734 at a symbol not in this object. */
8735 if (unresolved_reloc)
8737 (*info->callbacks->undefined_symbol) (info,
8738 h->root.root.string,
8745 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8747 /* @local on an ifunc does not really make sense since
8748 the ifunc resolver can take you anywhere. More
8749 seriously, calls to ifuncs must go through a plt call
8750 stub, and for pic the plt call stubs uses r30 to
8751 access the PLT. The problem is that a call that is
8752 local won't have the +32k reloc addend trick marking
8753 -fPIC code, so the linker won't know whether r30 is
8754 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8755 /* xgettext:c-format */
8756 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8757 input_bfd, input_section, rel->r_offset,
8758 h->root.root.string);
8762 case R_PPC_DTPREL16:
8763 case R_PPC_DTPREL16_LO:
8764 case R_PPC_DTPREL16_HI:
8765 case R_PPC_DTPREL16_HA:
8766 if (htab->elf.tls_sec != NULL)
8767 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8770 /* Relocations that may need to be propagated if this is a shared
8773 case R_PPC_TPREL16_LO:
8774 case R_PPC_TPREL16_HI:
8775 case R_PPC_TPREL16_HA:
8777 && h->root.type == bfd_link_hash_undefweak
8778 && h->dynindx == -1)
8780 /* Make this relocation against an undefined weak symbol
8781 resolve to zero. This is really just a tweak, since
8782 code using weak externs ought to check that they are
8783 defined before using them. */
8784 bfd_byte *p = contents + rel->r_offset - d_offset;
8785 unsigned int insn = bfd_get_32 (input_bfd, p);
8786 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8788 bfd_put_32 (input_bfd, insn, p);
8791 if (htab->elf.tls_sec != NULL)
8792 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8793 /* The TPREL16 relocs shouldn't really be used in shared
8794 libs as they will result in DT_TEXTREL being set, but
8795 support them anyway. */
8799 if (htab->elf.tls_sec != NULL)
8800 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8803 case R_PPC_DTPREL32:
8804 if (htab->elf.tls_sec != NULL)
8805 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8808 case R_PPC_DTPMOD32:
8814 case R_PPC_REL16_LO:
8815 case R_PPC_REL16_HI:
8816 case R_PPC_REL16_HA:
8817 case R_PPC_REL16DX_HA:
8821 if (h == NULL || h == htab->elf.hgot)
8827 case R_PPC_ADDR16_LO:
8828 case R_PPC_ADDR16_HI:
8829 case R_PPC_ADDR16_HA:
8834 case R_PPC_VLE_REL8:
8835 case R_PPC_VLE_REL15:
8836 case R_PPC_VLE_REL24:
8839 case R_PPC_REL14_BRTAKEN:
8840 case R_PPC_REL14_BRNTAKEN:
8841 /* If these relocations are not to a named symbol, they can be
8842 handled right here, no need to bother the dynamic linker. */
8843 if (SYMBOL_CALLS_LOCAL (info, h)
8844 || h == htab->elf.hgot)
8850 case R_PPC_ADDR14_BRTAKEN:
8851 case R_PPC_ADDR14_BRNTAKEN:
8852 if (h != NULL && !bfd_link_pic (info))
8857 if ((input_section->flags & SEC_ALLOC) == 0
8861 if ((bfd_link_pic (info)
8863 && ((h->root.type == bfd_link_hash_undefined
8864 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8865 || (h->root.type == bfd_link_hash_undefweak
8866 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8867 || info->dynamic_undefined_weak == 0))))
8868 && (must_be_dyn_reloc (info, r_type)
8869 || !SYMBOL_CALLS_LOCAL (info, h)))
8870 || (ELIMINATE_COPY_RELOCS
8871 && !bfd_link_pic (info)
8876 && !(h->protected_def
8877 && ppc_elf_hash_entry (h)->has_addr16_ha
8878 && ppc_elf_hash_entry (h)->has_addr16_lo
8879 && htab->params->pic_fixup > 0)))
8887 fprintf (stderr, "ppc_elf_relocate_section needs to "
8888 "create relocation for %s\n",
8889 (h && h->root.root.string
8890 ? h->root.root.string : "<unknown>"));
8893 /* When generating a shared object, these relocations
8894 are copied into the output file to be resolved at run
8897 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8900 if (outrel.r_offset == (bfd_vma) -1
8901 || outrel.r_offset == (bfd_vma) -2)
8902 skip = (int) outrel.r_offset;
8903 outrel.r_offset += (input_section->output_section->vma
8904 + input_section->output_offset);
8907 memset (&outrel, 0, sizeof outrel);
8909 && (h->root.type == bfd_link_hash_undefined
8910 || h->root.type == bfd_link_hash_undefweak))
8911 || !SYMBOL_REFERENCES_LOCAL (info, h))
8914 BFD_ASSERT (indx != -1);
8915 unresolved_reloc = FALSE;
8916 outrel.r_info = ELF32_R_INFO (indx, r_type);
8917 outrel.r_addend = rel->r_addend;
8921 outrel.r_addend = relocation + rel->r_addend;
8923 if (r_type != R_PPC_ADDR32)
8927 /* If we get here when building a static
8928 executable, then the libc startup function
8929 responsible for applying indirect function
8930 relocations is going to complain about
8932 If we get here when building a dynamic
8933 executable, it will be because we have
8934 a text relocation. The dynamic loader
8935 will set the text segment writable and
8936 non-executable to apply text relocations.
8937 So we'll segfault when trying to run the
8938 indirection function to resolve the reloc. */
8939 info->callbacks->einfo
8940 /* xgettext:c-format */
8941 (_("%H: relocation %s for indirect "
8942 "function %s unsupported\n"),
8943 input_bfd, input_section, rel->r_offset,
8948 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8950 else if (sec == NULL || sec->owner == NULL)
8952 bfd_set_error (bfd_error_bad_value);
8959 /* We are turning this relocation into one
8960 against a section symbol. It would be
8961 proper to subtract the symbol's value,
8962 osec->vma, from the emitted reloc addend,
8963 but ld.so expects buggy relocs.
8964 FIXME: Why not always use a zero index? */
8965 osec = sec->output_section;
8966 indx = elf_section_data (osec)->dynindx;
8969 osec = htab->elf.text_index_section;
8970 indx = elf_section_data (osec)->dynindx;
8972 BFD_ASSERT (indx != 0);
8975 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8976 indx, osec->name, osec->flags,
8977 h->root.root.string);
8981 outrel.r_info = ELF32_R_INFO (indx, r_type);
8983 else if (ifunc != NULL)
8984 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8986 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8989 sreloc = elf_section_data (input_section)->sreloc;
8992 sreloc = htab->elf.irelplt;
8994 htab->local_ifunc_resolver = 1;
8995 else if (is_static_defined (h))
8996 htab->maybe_local_ifunc_resolver = 1;
9001 loc = sreloc->contents;
9002 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
9003 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
9008 /* This reloc will be computed at runtime. Clear the memory
9009 so that it contains a predictable value for prelink. */
9012 relocation = howto->pc_relative ? outrel.r_offset : 0;
9017 else if (r_type == R_PPC_DTPMOD32
9018 && htab->plt_type == PLT_NEW
9019 && !htab->params->no_tls_get_addr_opt
9020 && htab->tls_get_addr != NULL
9021 && htab->tls_get_addr->plt.plist != NULL)
9023 /* Set up for __tls_get_addr_opt stub when this entry
9024 does not have dynamic relocs. */
9026 /* Set up the next word for local dynamic. If it turns
9027 out to be global dynamic, the reloc will overwrite
9029 if (rel->r_offset + 8 <= input_section->size)
9030 bfd_put_32 (input_bfd, DTP_OFFSET - TP_OFFSET,
9031 contents + rel->r_offset + 4);
9033 else if (r_type == R_PPC_DTPREL32
9034 && htab->plt_type == PLT_NEW
9035 && !htab->params->no_tls_get_addr_opt
9036 && htab->tls_get_addr != NULL
9037 && htab->tls_get_addr->plt.plist != NULL
9039 && rel[-1].r_info == ELF32_R_INFO (r_symndx, R_PPC_DTPMOD32)
9040 && rel[-1].r_offset + 4 == rel->r_offset)
9042 /* __tls_get_addr_opt stub value. */
9043 addend += DTP_OFFSET - TP_OFFSET;
9047 case R_PPC_RELAX_PLT:
9048 case R_PPC_RELAX_PLTREL24:
9051 struct plt_entry *ent;
9052 bfd_vma got2_addend = 0;
9054 if (r_type == R_PPC_RELAX_PLTREL24)
9056 if (bfd_link_pic (info))
9057 got2_addend = addend;
9060 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
9061 if (htab->plt_type == PLT_NEW)
9062 relocation = (htab->glink->output_section->vma
9063 + htab->glink->output_offset
9064 + ent->glink_offset);
9066 relocation = (htab->elf.splt->output_section->vma
9067 + htab->elf.splt->output_offset
9076 size_t insn_offset = rel->r_offset;
9079 if (bfd_link_pic (info))
9081 relocation -= (input_section->output_section->vma
9082 + input_section->output_offset
9083 + rel->r_offset - 4);
9084 stub = shared_stub_entry;
9085 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
9086 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
9087 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
9089 size = ARRAY_SIZE (shared_stub_entry) - 3;
9094 size = ARRAY_SIZE (stub_entry);
9097 relocation += addend;
9098 if (bfd_link_relocatable (info))
9101 /* First insn is HA, second is LO. */
9103 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9104 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9108 insn |= relocation & 0xffff;
9109 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9117 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9121 /* Rewrite the reloc and convert one of the trailing nop
9122 relocs to describe this relocation. */
9123 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9124 /* The relocs are at the bottom 2 bytes */
9125 wrel->r_offset = rel->r_offset + d_offset;
9126 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9127 wrel->r_addend = rel->r_addend;
9128 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9130 wrel->r_offset += 4;
9131 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9135 /* Indirect .sdata relocation. */
9136 case R_PPC_EMB_SDAI16:
9137 BFD_ASSERT (htab->sdata[0].section != NULL);
9138 if (!is_static_defined (htab->sdata[0].sym))
9140 unresolved_reloc = TRUE;
9144 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9145 h, relocation, rel);
9149 /* Indirect .sdata2 relocation. */
9150 case R_PPC_EMB_SDA2I16:
9151 BFD_ASSERT (htab->sdata[1].section != NULL);
9152 if (!is_static_defined (htab->sdata[1].sym))
9154 unresolved_reloc = TRUE;
9158 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9159 h, relocation, rel);
9163 /* Handle the TOC16 reloc. We want to use the offset within the .got
9164 section, not the actual VMA. This is appropriate when generating
9165 an embedded ELF object, for which the .got section acts like the
9166 AIX .toc section. */
9167 case R_PPC_TOC16: /* phony GOT16 relocations */
9168 if (sec == NULL || sec->output_section == NULL)
9170 unresolved_reloc = TRUE;
9173 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9175 || strcmp (bfd_get_section_name (sec->owner, sec),
9178 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9181 case R_PPC_PLTREL24:
9182 if (h != NULL && ifunc == NULL)
9184 struct plt_entry *ent;
9186 ent = find_plt_ent (&h->plt.plist, got2,
9187 bfd_link_pic (info) ? addend : 0);
9189 || htab->elf.splt == NULL)
9191 /* We didn't make a PLT entry for this symbol. This
9192 happens when statically linking PIC code, or when
9193 using -Bsymbolic. */
9197 /* Relocation is to the entry for this symbol in the
9198 procedure linkage table. */
9199 unresolved_reloc = FALSE;
9200 if (htab->plt_type == PLT_NEW)
9201 relocation = (htab->glink->output_section->vma
9202 + htab->glink->output_offset
9203 + ent->glink_offset);
9205 relocation = (htab->elf.splt->output_section->vma
9206 + htab->elf.splt->output_offset
9211 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9212 addend specifies the GOT pointer offset within .got2.
9213 Don't apply it to the relocation field. */
9217 /* Relocate against _SDA_BASE_. */
9218 case R_PPC_SDAREL16:
9221 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9224 || sec->output_section == NULL
9225 || !is_static_defined (sda))
9227 unresolved_reloc = TRUE;
9230 addend -= SYM_VAL (sda);
9232 name = bfd_get_section_name (output_bfd, sec->output_section);
9233 if (!(strcmp (name, ".sdata") == 0
9234 || strcmp (name, ".sbss") == 0))
9236 info->callbacks->einfo
9237 /* xgettext:c-format */
9238 (_("%P: %B: the target (%s) of a %s relocation is "
9239 "in the wrong output section (%s)\n"),
9248 /* Relocate against _SDA2_BASE_. */
9249 case R_PPC_EMB_SDA2REL:
9252 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9255 || sec->output_section == NULL
9256 || !is_static_defined (sda))
9258 unresolved_reloc = TRUE;
9261 addend -= SYM_VAL (sda);
9263 name = bfd_get_section_name (output_bfd, sec->output_section);
9264 if (!(strcmp (name, ".sdata2") == 0
9265 || strcmp (name, ".sbss2") == 0))
9267 info->callbacks->einfo
9268 /* xgettext:c-format */
9269 (_("%P: %B: the target (%s) of a %s relocation is "
9270 "in the wrong output section (%s)\n"),
9279 case R_PPC_VLE_LO16A:
9280 relocation = relocation + addend;
9281 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9282 contents + rel->r_offset, relocation,
9283 split16a_type, htab->params->vle_reloc_fixup);
9286 case R_PPC_VLE_LO16D:
9287 relocation = relocation + addend;
9288 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9289 contents + rel->r_offset, relocation,
9290 split16d_type, htab->params->vle_reloc_fixup);
9293 case R_PPC_VLE_HI16A:
9294 relocation = (relocation + addend) >> 16;
9295 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9296 contents + rel->r_offset, relocation,
9297 split16a_type, htab->params->vle_reloc_fixup);
9300 case R_PPC_VLE_HI16D:
9301 relocation = (relocation + addend) >> 16;
9302 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9303 contents + rel->r_offset, relocation,
9304 split16d_type, htab->params->vle_reloc_fixup);
9307 case R_PPC_VLE_HA16A:
9308 relocation = (relocation + addend + 0x8000) >> 16;
9309 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9310 contents + rel->r_offset, relocation,
9311 split16a_type, htab->params->vle_reloc_fixup);
9314 case R_PPC_VLE_HA16D:
9315 relocation = (relocation + addend + 0x8000) >> 16;
9316 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9317 contents + rel->r_offset, relocation,
9318 split16d_type, htab->params->vle_reloc_fixup);
9321 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9322 case R_PPC_EMB_SDA21:
9323 case R_PPC_VLE_SDA21:
9324 case R_PPC_EMB_RELSDA:
9325 case R_PPC_VLE_SDA21_LO:
9330 struct elf_link_hash_entry *sda = NULL;
9332 if (sec == NULL || sec->output_section == NULL)
9334 unresolved_reloc = TRUE;
9338 name = bfd_get_section_name (output_bfd, sec->output_section);
9339 if (strcmp (name, ".sdata") == 0
9340 || strcmp (name, ".sbss") == 0)
9343 sda = htab->sdata[0].sym;
9345 else if (strcmp (name, ".sdata2") == 0
9346 || strcmp (name, ".sbss2") == 0)
9349 sda = htab->sdata[1].sym;
9351 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9352 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9358 info->callbacks->einfo
9359 /* xgettext:c-format */
9360 (_("%P: %B: the target (%s) of a %s relocation is "
9361 "in the wrong output section (%s)\n"),
9367 bfd_set_error (bfd_error_bad_value);
9374 if (!is_static_defined (sda))
9376 unresolved_reloc = TRUE;
9379 addend -= SYM_VAL (sda);
9382 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9384 && (r_type == R_PPC_VLE_SDA21
9385 || r_type == R_PPC_VLE_SDA21_LO))
9387 relocation = relocation + addend;
9390 /* Force e_li insn, keeping RT from original insn. */
9394 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9395 /* Top 4 bits of value to 17..20. */
9396 insn |= (relocation & 0xf0000) >> 5;
9397 /* Next 5 bits of the value to 11..15. */
9398 insn |= (relocation & 0xf800) << 5;
9399 /* And the final 11 bits of the value to bits 21 to 31. */
9400 insn |= relocation & 0x7ff;
9402 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9404 if (r_type == R_PPC_VLE_SDA21
9405 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9409 else if (r_type == R_PPC_EMB_SDA21
9410 || r_type == R_PPC_VLE_SDA21
9411 || r_type == R_PPC_VLE_SDA21_LO)
9413 /* Fill in register field. */
9414 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9416 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9420 case R_PPC_VLE_SDAREL_LO16A:
9421 case R_PPC_VLE_SDAREL_LO16D:
9422 case R_PPC_VLE_SDAREL_HI16A:
9423 case R_PPC_VLE_SDAREL_HI16D:
9424 case R_PPC_VLE_SDAREL_HA16A:
9425 case R_PPC_VLE_SDAREL_HA16D:
9429 struct elf_link_hash_entry *sda = NULL;
9431 if (sec == NULL || sec->output_section == NULL)
9433 unresolved_reloc = TRUE;
9437 name = bfd_get_section_name (output_bfd, sec->output_section);
9438 if (strcmp (name, ".sdata") == 0
9439 || strcmp (name, ".sbss") == 0)
9440 sda = htab->sdata[0].sym;
9441 else if (strcmp (name, ".sdata2") == 0
9442 || strcmp (name, ".sbss2") == 0)
9443 sda = htab->sdata[1].sym;
9447 /* xgettext:c-format */
9448 (_("%B: the target (%s) of a %s relocation is "
9449 "in the wrong output section (%s)"),
9455 bfd_set_error (bfd_error_bad_value);
9460 if (sda == NULL || !is_static_defined (sda))
9462 unresolved_reloc = TRUE;
9465 value = relocation + addend - SYM_VAL (sda);
9467 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9468 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9469 contents + rel->r_offset, value,
9471 htab->params->vle_reloc_fixup);
9472 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9473 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9474 contents + rel->r_offset, value,
9476 htab->params->vle_reloc_fixup);
9477 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9479 value = value >> 16;
9480 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9481 contents + rel->r_offset, value,
9483 htab->params->vle_reloc_fixup);
9485 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9487 value = value >> 16;
9488 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9489 contents + rel->r_offset, value,
9491 htab->params->vle_reloc_fixup);
9493 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9495 value = (value + 0x8000) >> 16;
9496 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9497 contents + rel->r_offset, value,
9499 htab->params->vle_reloc_fixup);
9501 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9503 value = (value + 0x8000) >> 16;
9504 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9505 contents + rel->r_offset, value,
9507 htab->params->vle_reloc_fixup);
9512 /* Relocate against the beginning of the section. */
9514 case R_PPC_SECTOFF_LO:
9515 case R_PPC_SECTOFF_HI:
9516 case R_PPC_SECTOFF_HA:
9517 if (sec == NULL || sec->output_section == NULL)
9519 unresolved_reloc = TRUE;
9522 addend -= sec->output_section->vma;
9525 /* Negative relocations. */
9526 case R_PPC_EMB_NADDR32:
9527 case R_PPC_EMB_NADDR16:
9528 case R_PPC_EMB_NADDR16_LO:
9529 case R_PPC_EMB_NADDR16_HI:
9530 case R_PPC_EMB_NADDR16_HA:
9531 addend -= 2 * relocation;
9535 case R_PPC_GLOB_DAT:
9536 case R_PPC_JMP_SLOT:
9537 case R_PPC_RELATIVE:
9538 case R_PPC_IRELATIVE:
9540 case R_PPC_PLTREL32:
9541 case R_PPC_PLT16_LO:
9542 case R_PPC_PLT16_HI:
9543 case R_PPC_PLT16_HA:
9545 case R_PPC_EMB_RELSEC16:
9546 case R_PPC_EMB_RELST_LO:
9547 case R_PPC_EMB_RELST_HI:
9548 case R_PPC_EMB_RELST_HA:
9549 case R_PPC_EMB_BIT_FLD:
9550 info->callbacks->einfo
9551 /* xgettext:c-format */
9552 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9557 bfd_set_error (bfd_error_invalid_operation);
9562 /* Do any further special processing. */
9568 case R_PPC_ADDR16_HA:
9569 case R_PPC_REL16_HA:
9570 case R_PPC_REL16DX_HA:
9571 case R_PPC_SECTOFF_HA:
9572 case R_PPC_TPREL16_HA:
9573 case R_PPC_DTPREL16_HA:
9574 case R_PPC_EMB_NADDR16_HA:
9575 case R_PPC_EMB_RELST_HA:
9576 /* It's just possible that this symbol is a weak symbol
9577 that's not actually defined anywhere. In that case,
9578 'sec' would be NULL, and we should leave the symbol
9579 alone (it will be set to zero elsewhere in the link). */
9584 case R_PPC_PLT16_HA:
9585 case R_PPC_GOT16_HA:
9586 case R_PPC_GOT_TLSGD16_HA:
9587 case R_PPC_GOT_TLSLD16_HA:
9588 case R_PPC_GOT_TPREL16_HA:
9589 case R_PPC_GOT_DTPREL16_HA:
9590 /* Add 0x10000 if sign bit in 0:15 is set.
9591 Bits 0:15 are not used. */
9596 case R_PPC_ADDR16_LO:
9598 case R_PPC_GOT16_LO:
9599 case R_PPC_SDAREL16:
9601 case R_PPC_SECTOFF_LO:
9602 case R_PPC_DTPREL16:
9603 case R_PPC_DTPREL16_LO:
9605 case R_PPC_TPREL16_LO:
9606 case R_PPC_GOT_TLSGD16:
9607 case R_PPC_GOT_TLSGD16_LO:
9608 case R_PPC_GOT_TLSLD16:
9609 case R_PPC_GOT_TLSLD16_LO:
9610 case R_PPC_GOT_DTPREL16:
9611 case R_PPC_GOT_DTPREL16_LO:
9612 case R_PPC_GOT_TPREL16:
9613 case R_PPC_GOT_TPREL16_LO:
9615 /* The 32-bit ABI lacks proper relocations to deal with
9616 certain 64-bit instructions. Prevent damage to bits
9617 that make up part of the insn opcode. */
9618 unsigned int insn, mask, lobit;
9620 insn = bfd_get_32 (input_bfd,
9621 contents + rel->r_offset - d_offset);
9623 if (is_insn_ds_form (insn))
9625 else if (is_insn_dq_form (insn))
9629 relocation += addend;
9630 addend = insn & mask;
9631 lobit = mask & relocation;
9634 relocation ^= lobit;
9635 info->callbacks->einfo
9636 /* xgettext:c-format */
9637 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9638 input_bfd, input_section, rel->r_offset,
9639 howto->name, sym_name, mask + 1);
9640 bfd_set_error (bfd_error_bad_value);
9648 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9649 "offset = %ld, addend = %ld\n",
9654 (long) rel->r_offset,
9658 if (unresolved_reloc
9659 && !((input_section->flags & SEC_DEBUGGING) != 0
9661 && _bfd_elf_section_offset (output_bfd, info, input_section,
9662 rel->r_offset) != (bfd_vma) -1)
9664 info->callbacks->einfo
9665 /* xgettext:c-format */
9666 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9667 input_bfd, input_section, rel->r_offset,
9673 /* 16-bit fields in insns mostly have signed values, but a
9674 few insns have 16-bit unsigned values. Really, we should
9675 have different reloc types. */
9676 if (howto->complain_on_overflow != complain_overflow_dont
9677 && howto->dst_mask == 0xffff
9678 && (input_section->flags & SEC_CODE) != 0)
9680 enum complain_overflow complain = complain_overflow_signed;
9682 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9686 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9687 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9688 complain = complain_overflow_bitfield;
9689 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9690 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9691 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9692 complain = complain_overflow_unsigned;
9694 if (howto->complain_on_overflow != complain)
9697 alt_howto.complain_on_overflow = complain;
9702 if (r_type == R_PPC_REL16DX_HA)
9704 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9705 if (rel->r_offset + 4 > input_section->size)
9706 r = bfd_reloc_outofrange;
9711 relocation += addend;
9712 relocation -= (rel->r_offset
9713 + input_section->output_offset
9714 + input_section->output_section->vma);
9716 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9718 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9719 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9724 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9725 rel->r_offset, relocation, addend);
9727 if (r != bfd_reloc_ok)
9729 if (r == bfd_reloc_overflow)
9732 /* On code like "if (foo) foo();" don't report overflow
9733 on a branch to zero when foo is undefined. */
9736 && (h->root.type == bfd_link_hash_undefweak
9737 || h->root.type == bfd_link_hash_undefined)
9738 && is_branch_reloc (r_type)))
9739 info->callbacks->reloc_overflow
9740 (info, (h ? &h->root : NULL), sym_name, howto->name,
9741 rel->r_addend, input_bfd, input_section, rel->r_offset);
9745 info->callbacks->einfo
9746 /* xgettext:c-format */
9747 (_("%H: %s reloc against `%s': error %d\n"),
9748 input_bfd, input_section, rel->r_offset,
9749 howto->name, sym_name, (int) r);
9760 Elf_Internal_Shdr *rel_hdr;
9761 size_t deleted = rel - wrel;
9763 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9764 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9765 if (rel_hdr->sh_size == 0)
9767 /* It is too late to remove an empty reloc section. Leave
9769 ??? What is wrong with an empty section??? */
9770 rel_hdr->sh_size = rel_hdr->sh_entsize;
9775 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9776 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9777 input_section->reloc_count -= deleted;
9781 fprintf (stderr, "\n");
9784 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9785 && input_section->size != input_section->rawsize
9786 && (strcmp (input_section->output_section->name, ".init") == 0
9787 || strcmp (input_section->output_section->name, ".fini") == 0))
9789 /* Branch around the trampolines. */
9790 unsigned int insn = B + input_section->size - input_section->rawsize;
9791 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9794 if (htab->params->ppc476_workaround
9795 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9796 && (!bfd_link_relocatable (info)
9797 || (input_section->output_section->alignment_power
9798 >= htab->params->pagesize_p2)))
9800 bfd_vma start_addr, end_addr, addr;
9801 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9803 if (relax_info->workaround_size != 0)
9809 bfd_put_32 (input_bfd, BA, fill);
9810 p = contents + input_section->size - relax_info->workaround_size;
9811 n = relax_info->workaround_size >> 2;
9814 memcpy (p, fill, 4);
9819 /* The idea is: Replace the last instruction on a page with a
9820 branch to a patch area. Put the insn there followed by a
9821 branch back to the next page. Complicated a little by
9822 needing to handle moved conditional branches, and by not
9823 wanting to touch data-in-text. */
9825 start_addr = (input_section->output_section->vma
9826 + input_section->output_offset);
9827 end_addr = (start_addr + input_section->size
9828 - relax_info->workaround_size);
9829 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9833 bfd_vma offset = addr - start_addr;
9834 Elf_Internal_Rela *lo, *hi;
9835 bfd_boolean is_data;
9836 bfd_vma patch_off, patch_addr;
9839 /* Do we have a data reloc at this offset? If so, leave
9847 rel = lo + (hi - lo) / 2;
9848 if (rel->r_offset < offset)
9850 else if (rel->r_offset > offset + 3)
9854 switch (ELF32_R_TYPE (rel->r_info))
9871 /* Some instructions can be left alone too. Unconditional
9872 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9873 avoid the icache failure.
9875 The problem occurs due to prefetch across a page boundary
9876 where stale instructions can be fetched from the next
9877 page, and the mechanism for flushing these bad
9878 instructions fails under certain circumstances. The
9879 unconditional branches:
9880 1) Branch: b, bl, ba, bla,
9881 2) Branch Conditional: bc, bca, bcl, bcla,
9882 3) Branch Conditional to Link Register: bclr, bclrl,
9883 where (2) and (3) have BO=0x14 making them unconditional,
9884 prevent the bad prefetch because the prefetch itself is
9885 affected by these instructions. This happens even if the
9886 instruction is not executed.
9891 . addi 9,9,new_page@l
9898 The bctr is not predicted taken due to ctr not being
9899 ready, so prefetch continues on past the bctr into the
9900 new page which might have stale instructions. If they
9901 fail to be flushed, then they will be executed after the
9902 bctr executes. Either of the following modifications
9903 prevent the bad prefetch from happening in the first
9906 . lis 9,new_page@ha lis 9,new_page@ha
9907 . addi 9,9,new_page@l addi 9,9,new_page@l
9910 . nop b somewhere_else
9911 . b somewhere_else nop
9912 . new_page: new_page:
9914 insn = bfd_get_32 (input_bfd, contents + offset);
9915 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9916 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9917 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9918 || ((insn & (0x3f << 26)) == (19u << 26)
9919 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9920 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9923 patch_addr = (start_addr + input_section->size
9924 - relax_info->workaround_size);
9925 patch_addr = (patch_addr + 15) & -16;
9926 patch_off = patch_addr - start_addr;
9927 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9930 && rel->r_offset >= offset
9931 && rel->r_offset < offset + 4)
9935 /* If the insn we are patching had a reloc, adjust the
9936 reloc r_offset so that the reloc applies to the moved
9937 location. This matters for -r and --emit-relocs. */
9938 if (rel + 1 != relend)
9940 Elf_Internal_Rela tmp = *rel;
9942 /* Keep the relocs sorted by r_offset. */
9943 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9946 relend[-1].r_offset += patch_off - offset;
9948 /* Adjust REL16 addends too. */
9949 switch (ELF32_R_TYPE (relend[-1].r_info))
9952 case R_PPC_REL16_LO:
9953 case R_PPC_REL16_HI:
9954 case R_PPC_REL16_HA:
9955 relend[-1].r_addend += patch_off - offset;
9961 /* If we are building a PIE or shared library with
9962 non-PIC objects, perhaps we had a dynamic reloc too?
9963 If so, the dynamic reloc must move with the insn. */
9964 sreloc = elf_section_data (input_section)->sreloc;
9967 Elf32_External_Rela *slo, *shi, *srelend;
9970 slo = (Elf32_External_Rela *) sreloc->contents;
9971 shi = srelend = slo + sreloc->reloc_count;
9972 soffset = (offset + input_section->output_section->vma
9973 + input_section->output_offset);
9976 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9977 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9979 if (outrel.r_offset < soffset)
9981 else if (outrel.r_offset > soffset + 3)
9985 if (srel + 1 != srelend)
9987 memmove (srel, srel + 1,
9988 (srelend - (srel + 1)) * sizeof (*srel));
9991 outrel.r_offset += patch_off - offset;
9992 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
10002 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
10003 && (insn & 2) == 0 /* relative */)
10005 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
10007 delta += offset - patch_off;
10008 if (bfd_link_relocatable (info) && rel != NULL)
10010 if (!bfd_link_relocatable (info) && rel != NULL)
10012 enum elf_ppc_reloc_type r_type;
10014 r_type = ELF32_R_TYPE (relend[-1].r_info);
10015 if (r_type == R_PPC_REL14_BRTAKEN)
10016 insn |= BRANCH_PREDICT_BIT;
10017 else if (r_type == R_PPC_REL14_BRNTAKEN)
10018 insn &= ~BRANCH_PREDICT_BIT;
10020 BFD_ASSERT (r_type == R_PPC_REL14);
10022 if ((r_type == R_PPC_REL14_BRTAKEN
10023 || r_type == R_PPC_REL14_BRNTAKEN)
10024 && delta + 0x8000 < 0x10000
10025 && (bfd_signed_vma) delta < 0)
10026 insn ^= BRANCH_PREDICT_BIT;
10028 if (delta + 0x8000 < 0x10000)
10030 bfd_put_32 (input_bfd,
10031 (insn & ~0xfffc) | (delta & 0xfffc),
10032 contents + patch_off);
10034 bfd_put_32 (input_bfd,
10035 B | ((offset + 4 - patch_off) & 0x3fffffc),
10036 contents + patch_off);
10043 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
10045 relend[-1].r_offset += 8;
10046 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
10048 bfd_put_32 (input_bfd,
10049 (insn & ~0xfffc) | 8,
10050 contents + patch_off);
10052 bfd_put_32 (input_bfd,
10053 B | ((offset + 4 - patch_off) & 0x3fffffc),
10054 contents + patch_off);
10056 bfd_put_32 (input_bfd,
10057 B | ((delta - 8) & 0x3fffffc),
10058 contents + patch_off);
10064 bfd_put_32 (input_bfd, insn, contents + patch_off);
10066 bfd_put_32 (input_bfd,
10067 B | ((offset + 4 - patch_off) & 0x3fffffc),
10068 contents + patch_off);
10071 BFD_ASSERT (patch_off <= input_section->size);
10072 relax_info->workaround_size = input_section->size - patch_off;
10079 /* Finish up dynamic symbol handling. We set the contents of various
10080 dynamic sections here. */
10083 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
10084 struct bfd_link_info *info,
10085 struct elf_link_hash_entry *h,
10086 Elf_Internal_Sym *sym)
10088 struct ppc_elf_link_hash_table *htab;
10089 struct plt_entry *ent;
10090 bfd_boolean doneone;
10093 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
10094 h->root.root.string);
10097 htab = ppc_elf_hash_table (info);
10098 BFD_ASSERT (htab->elf.dynobj != NULL);
10101 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10102 if (ent->plt.offset != (bfd_vma) -1)
10106 Elf_Internal_Rela rela;
10108 bfd_vma reloc_index;
10110 if (htab->plt_type == PLT_NEW
10111 || !htab->elf.dynamic_sections_created
10112 || h->dynindx == -1)
10113 reloc_index = ent->plt.offset / 4;
10116 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10117 / htab->plt_slot_size);
10118 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10119 && htab->plt_type == PLT_OLD)
10120 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10123 /* This symbol has an entry in the procedure linkage table.
10125 if (htab->plt_type == PLT_VXWORKS
10126 && htab->elf.dynamic_sections_created
10127 && h->dynindx != -1)
10129 bfd_vma got_offset;
10130 const bfd_vma *plt_entry;
10132 /* The first three entries in .got.plt are reserved. */
10133 got_offset = (reloc_index + 3) * 4;
10135 /* Use the right PLT. */
10136 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10137 : ppc_elf_vxworks_plt_entry;
10139 /* Fill in the .plt on VxWorks. */
10140 if (bfd_link_pic (info))
10142 bfd_put_32 (output_bfd,
10143 plt_entry[0] | PPC_HA (got_offset),
10144 htab->elf.splt->contents + ent->plt.offset + 0);
10145 bfd_put_32 (output_bfd,
10146 plt_entry[1] | PPC_LO (got_offset),
10147 htab->elf.splt->contents + ent->plt.offset + 4);
10151 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10153 bfd_put_32 (output_bfd,
10154 plt_entry[0] | PPC_HA (got_loc),
10155 htab->elf.splt->contents + ent->plt.offset + 0);
10156 bfd_put_32 (output_bfd,
10157 plt_entry[1] | PPC_LO (got_loc),
10158 htab->elf.splt->contents + ent->plt.offset + 4);
10161 bfd_put_32 (output_bfd, plt_entry[2],
10162 htab->elf.splt->contents + ent->plt.offset + 8);
10163 bfd_put_32 (output_bfd, plt_entry[3],
10164 htab->elf.splt->contents + ent->plt.offset + 12);
10166 /* This instruction is an immediate load. The value loaded is
10167 the byte offset of the R_PPC_JMP_SLOT relocation from the
10168 start of the .rela.plt section. The value is stored in the
10169 low-order 16 bits of the load instruction. */
10170 /* NOTE: It appears that this is now an index rather than a
10171 prescaled offset. */
10172 bfd_put_32 (output_bfd,
10173 plt_entry[4] | reloc_index,
10174 htab->elf.splt->contents + ent->plt.offset + 16);
10175 /* This instruction is a PC-relative branch whose target is
10176 the start of the PLT section. The address of this branch
10177 instruction is 20 bytes beyond the start of this PLT entry.
10178 The address is encoded in bits 6-29, inclusive. The value
10179 stored is right-shifted by two bits, permitting a 26-bit
10181 bfd_put_32 (output_bfd,
10183 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10184 htab->elf.splt->contents + ent->plt.offset + 20);
10185 bfd_put_32 (output_bfd, plt_entry[6],
10186 htab->elf.splt->contents + ent->plt.offset + 24);
10187 bfd_put_32 (output_bfd, plt_entry[7],
10188 htab->elf.splt->contents + ent->plt.offset + 28);
10190 /* Fill in the GOT entry corresponding to this PLT slot with
10191 the address immediately after the "bctr" instruction
10192 in this PLT entry. */
10193 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10194 + htab->elf.splt->output_offset
10195 + ent->plt.offset + 16),
10196 htab->elf.sgotplt->contents + got_offset);
10198 if (!bfd_link_pic (info))
10200 /* Fill in a couple of entries in .rela.plt.unloaded. */
10201 loc = htab->srelplt2->contents
10202 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10203 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10204 * sizeof (Elf32_External_Rela));
10206 /* Provide the @ha relocation for the first instruction. */
10207 rela.r_offset = (htab->elf.splt->output_section->vma
10208 + htab->elf.splt->output_offset
10209 + ent->plt.offset + 2);
10210 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10212 rela.r_addend = got_offset;
10213 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10214 loc += sizeof (Elf32_External_Rela);
10216 /* Provide the @l relocation for the second instruction. */
10217 rela.r_offset = (htab->elf.splt->output_section->vma
10218 + htab->elf.splt->output_offset
10219 + ent->plt.offset + 6);
10220 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10222 rela.r_addend = got_offset;
10223 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10224 loc += sizeof (Elf32_External_Rela);
10226 /* Provide a relocation for the GOT entry corresponding to this
10227 PLT slot. Point it at the middle of the .plt entry. */
10228 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10229 + htab->elf.sgotplt->output_offset
10231 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10233 rela.r_addend = ent->plt.offset + 16;
10234 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10237 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10238 In particular, the offset for the relocation is not the
10239 address of the PLT entry for this function, as specified
10240 by the ABI. Instead, the offset is set to the address of
10241 the GOT slot for this function. See EABI 4.4.4.1. */
10242 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10243 + htab->elf.sgotplt->output_offset
10249 asection *splt = htab->elf.splt;
10250 if (!htab->elf.dynamic_sections_created
10251 || h->dynindx == -1)
10252 splt = htab->elf.iplt;
10254 rela.r_offset = (splt->output_section->vma
10255 + splt->output_offset
10256 + ent->plt.offset);
10257 if (htab->plt_type == PLT_OLD
10258 || !htab->elf.dynamic_sections_created
10259 || h->dynindx == -1)
10261 /* We don't need to fill in the .plt. The ppc dynamic
10262 linker will fill it in. */
10266 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10267 + htab->glink->output_section->vma
10268 + htab->glink->output_offset);
10269 bfd_put_32 (output_bfd, val,
10270 splt->contents + ent->plt.offset);
10274 /* Fill in the entry in the .rela.plt section. */
10276 if (!htab->elf.dynamic_sections_created
10277 || h->dynindx == -1)
10279 BFD_ASSERT (h->type == STT_GNU_IFUNC
10281 && (h->root.type == bfd_link_hash_defined
10282 || h->root.type == bfd_link_hash_defweak));
10283 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10284 rela.r_addend = SYM_VAL (h);
10287 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10289 if (!htab->elf.dynamic_sections_created
10290 || h->dynindx == -1)
10292 loc = (htab->elf.irelplt->contents
10293 + (htab->elf.irelplt->reloc_count++
10294 * sizeof (Elf32_External_Rela)));
10295 htab->local_ifunc_resolver = 1;
10299 loc = (htab->elf.srelplt->contents
10300 + reloc_index * sizeof (Elf32_External_Rela));
10301 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10302 htab->maybe_local_ifunc_resolver = 1;
10304 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10306 if (!h->def_regular)
10308 /* Mark the symbol as undefined, rather than as
10309 defined in the .plt section. Leave the value if
10310 there were any relocations where pointer equality
10311 matters (this is a clue for the dynamic linker, to
10312 make function pointer comparisons work between an
10313 application and shared library), otherwise set it
10315 sym->st_shndx = SHN_UNDEF;
10316 if (!h->pointer_equality_needed)
10318 else if (!h->ref_regular_nonweak)
10320 /* This breaks function pointer comparisons, but
10321 that is better than breaking tests for a NULL
10322 function pointer. */
10326 else if (h->type == STT_GNU_IFUNC
10327 && !bfd_link_pic (info))
10329 /* Set the value of ifunc symbols in a non-pie
10330 executable to the glink entry. This is to avoid
10331 text relocations. We can't do this for ifunc in
10332 allocate_dynrelocs, as we do for normal dynamic
10333 function symbols with plt entries, because we need
10334 to keep the original value around for the ifunc
10336 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10337 (output_bfd, htab->glink->output_section));
10338 sym->st_value = (ent->glink_offset
10339 + htab->glink->output_offset
10340 + htab->glink->output_section->vma);
10345 if (htab->plt_type == PLT_NEW
10346 || !htab->elf.dynamic_sections_created
10347 || h->dynindx == -1)
10350 asection *splt = htab->elf.splt;
10351 if (!htab->elf.dynamic_sections_created
10352 || h->dynindx == -1)
10353 splt = htab->elf.iplt;
10355 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10357 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10359 bfd_put_32 (output_bfd, LWZ_11_3, p);
10361 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10363 bfd_put_32 (output_bfd, MR_0_3, p);
10365 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10367 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10369 bfd_put_32 (output_bfd, BEQLR, p);
10371 bfd_put_32 (output_bfd, MR_3_0, p);
10373 bfd_put_32 (output_bfd, NOP, p);
10377 write_glink_stub (ent, splt, p, info);
10379 if (!bfd_link_pic (info))
10380 /* We only need one non-PIC glink stub. */
10390 Elf_Internal_Rela rela;
10393 /* This symbols needs a copy reloc. Set it up. */
10396 fprintf (stderr, ", copy");
10399 BFD_ASSERT (h->dynindx != -1);
10401 if (ppc_elf_hash_entry (h)->has_sda_refs)
10403 else if (h->root.u.def.section == htab->elf.sdynrelro)
10404 s = htab->elf.sreldynrelro;
10406 s = htab->elf.srelbss;
10407 BFD_ASSERT (s != NULL);
10409 rela.r_offset = SYM_VAL (h);
10410 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10412 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10413 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10417 fprintf (stderr, "\n");
10423 static enum elf_reloc_type_class
10424 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10425 const asection *rel_sec,
10426 const Elf_Internal_Rela *rela)
10428 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10430 if (rel_sec == htab->elf.irelplt)
10431 return reloc_class_ifunc;
10433 switch (ELF32_R_TYPE (rela->r_info))
10435 case R_PPC_RELATIVE:
10436 return reloc_class_relative;
10437 case R_PPC_JMP_SLOT:
10438 return reloc_class_plt;
10440 return reloc_class_copy;
10442 return reloc_class_normal;
10446 /* Finish up the dynamic sections. */
10449 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10450 struct bfd_link_info *info)
10453 struct ppc_elf_link_hash_table *htab;
10456 bfd_boolean ret = TRUE;
10459 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10462 htab = ppc_elf_hash_table (info);
10463 dynobj = htab->elf.dynobj;
10464 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10467 if (htab->elf.hgot != NULL)
10468 got = SYM_VAL (htab->elf.hgot);
10470 if (htab->elf.dynamic_sections_created)
10472 Elf32_External_Dyn *dyncon, *dynconend;
10474 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10476 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10477 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10478 for (; dyncon < dynconend; dyncon++)
10480 Elf_Internal_Dyn dyn;
10483 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10488 if (htab->is_vxworks)
10489 s = htab->elf.sgotplt;
10491 s = htab->elf.splt;
10492 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10496 dyn.d_un.d_val = htab->elf.srelplt->size;
10500 s = htab->elf.srelplt;
10501 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10505 dyn.d_un.d_ptr = got;
10509 if (htab->local_ifunc_resolver)
10510 info->callbacks->einfo
10511 (_("%X%P: text relocations and GNU indirect "
10512 "functions will result in a segfault at runtime\n"));
10513 else if (htab->maybe_local_ifunc_resolver)
10514 info->callbacks->einfo
10515 (_("%P: warning: text relocations and GNU indirect "
10516 "functions may result in a segfault at runtime\n"));
10520 if (htab->is_vxworks
10521 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10526 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10530 if (htab->elf.sgot != NULL
10531 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10533 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10534 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10536 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10538 p += htab->elf.hgot->root.u.def.value;
10539 if (htab->plt_type == PLT_OLD)
10541 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10542 so that a function can easily find the address of
10543 _GLOBAL_OFFSET_TABLE_. */
10544 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10545 < htab->elf.hgot->root.u.def.section->size);
10546 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10551 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10552 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10553 < htab->elf.hgot->root.u.def.section->size);
10554 bfd_put_32 (output_bfd, val, p);
10559 /* xgettext:c-format */
10560 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10561 htab->elf.hgot->root.root.string,
10562 (htab->elf.sgotplt != NULL
10563 ? htab->elf.sgotplt->name
10564 : htab->elf.sgot->name));
10565 bfd_set_error (bfd_error_bad_value);
10569 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10572 /* Fill in the first entry in the VxWorks procedure linkage table. */
10573 if (htab->is_vxworks
10574 && htab->elf.splt != NULL
10575 && htab->elf.splt->size != 0
10576 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10578 asection *splt = htab->elf.splt;
10579 /* Use the right PLT. */
10580 const bfd_vma *plt_entry = (bfd_link_pic (info)
10581 ? ppc_elf_vxworks_pic_plt0_entry
10582 : ppc_elf_vxworks_plt0_entry);
10584 if (!bfd_link_pic (info))
10586 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10588 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10589 splt->contents + 0);
10590 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10591 splt->contents + 4);
10595 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10596 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10598 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10599 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10600 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10601 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10602 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10603 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10605 if (! bfd_link_pic (info))
10607 Elf_Internal_Rela rela;
10610 loc = htab->srelplt2->contents;
10612 /* Output the @ha relocation for the first instruction. */
10613 rela.r_offset = (htab->elf.splt->output_section->vma
10614 + htab->elf.splt->output_offset
10616 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10618 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10619 loc += sizeof (Elf32_External_Rela);
10621 /* Output the @l relocation for the second instruction. */
10622 rela.r_offset = (htab->elf.splt->output_section->vma
10623 + htab->elf.splt->output_offset
10625 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10627 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10628 loc += sizeof (Elf32_External_Rela);
10630 /* Fix up the remaining relocations. They may have the wrong
10631 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10632 in which symbols were output. */
10633 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10635 Elf_Internal_Rela rel;
10637 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10638 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10639 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10640 loc += sizeof (Elf32_External_Rela);
10642 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10643 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10644 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10645 loc += sizeof (Elf32_External_Rela);
10647 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10648 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10649 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10650 loc += sizeof (Elf32_External_Rela);
10655 if (htab->glink != NULL
10656 && htab->glink->contents != NULL
10657 && htab->elf.dynamic_sections_created)
10660 unsigned char *endp;
10665 * PIC glink code is the following:
10667 * # ith PLT code stub.
10668 * addis 11,30,(plt+(i-1)*4-got)@ha
10669 * lwz 11,(plt+(i-1)*4-got)@l(11)
10673 * # A table of branches, one for each plt entry.
10674 * # The idea is that the plt call stub loads ctr and r11 with these
10675 * # addresses, so (r11 - res_0) gives the plt index * 4.
10676 * res_0: b PLTresolve
10677 * res_1: b PLTresolve
10679 * # Some number of entries towards the end can be nops
10685 * addis 11,11,(1f-res_0)@ha
10688 * 1: addi 11,11,(1b-res_0)@l
10691 * sub 11,11,12 # r11 = index * 4
10692 * addis 12,12,(got+4-1b)@ha
10693 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10694 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10697 * add 11,0,11 # r11 = index * 12 = reloc offset.
10700 static const unsigned int pic_plt_resolve[] =
10721 * Non-PIC glink code is a little simpler.
10723 * # ith PLT code stub.
10724 * lis 11,(plt+(i-1)*4)@ha
10725 * lwz 11,(plt+(i-1)*4)@l(11)
10729 * The branch table is the same, then comes
10732 * lis 12,(got+4)@ha
10733 * addis 11,11,(-res_0)@ha
10734 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10735 * addi 11,11,(-res_0)@l # r11 = index * 4
10738 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10739 * add 11,0,11 # r11 = index * 12 = reloc offset.
10742 static const unsigned int plt_resolve[] =
10762 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10764 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10767 /* Build the branch table, one for each plt entry (less one),
10768 and perhaps some padding. */
10769 p = htab->glink->contents;
10770 p += htab->glink_pltresolve;
10771 endp = htab->glink->contents;
10772 endp += htab->glink->size - GLINK_PLTRESOLVE;
10773 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10775 bfd_put_32 (output_bfd, B + endp - p, p);
10780 bfd_put_32 (output_bfd, NOP, p);
10784 res0 = (htab->glink_pltresolve
10785 + htab->glink->output_section->vma
10786 + htab->glink->output_offset);
10788 if (htab->params->ppc476_workaround)
10790 /* Ensure that a call stub at the end of a page doesn't
10791 result in prefetch over the end of the page into the
10792 glink branch table. */
10793 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10795 bfd_vma glink_start = (htab->glink->output_section->vma
10796 + htab->glink->output_offset);
10798 for (page_addr = res0 & -pagesize;
10799 page_addr > glink_start;
10800 page_addr -= pagesize)
10802 /* We have a plt call stub that may need fixing. */
10806 loc = htab->glink->contents + page_addr - 4 - glink_start;
10807 insn = bfd_get_32 (output_bfd, loc);
10810 /* By alignment, we know that there must be at least
10811 one other call stub before this one. */
10812 insn = bfd_get_32 (output_bfd, loc - 16);
10814 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10816 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10821 /* Last comes the PLTresolve stub. */
10822 if (bfd_link_pic (info))
10826 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10828 unsigned int insn = pic_plt_resolve[i];
10830 if (htab->params->ppc476_workaround && insn == NOP)
10832 bfd_put_32 (output_bfd, insn, p);
10835 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10837 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10838 + htab->glink->output_section->vma
10839 + htab->glink->output_offset);
10841 bfd_put_32 (output_bfd,
10842 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10843 bfd_put_32 (output_bfd,
10844 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10845 bfd_put_32 (output_bfd,
10846 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10847 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10849 bfd_put_32 (output_bfd,
10850 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10851 bfd_put_32 (output_bfd,
10852 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10856 bfd_put_32 (output_bfd,
10857 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10858 bfd_put_32 (output_bfd,
10859 LWZ_12_12 + 4, p + 9*4);
10864 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10866 unsigned int insn = plt_resolve[i];
10868 if (htab->params->ppc476_workaround && insn == NOP)
10870 bfd_put_32 (output_bfd, insn, p);
10873 p -= 4 * ARRAY_SIZE (plt_resolve);
10875 bfd_put_32 (output_bfd,
10876 LIS_12 + PPC_HA (got + 4), p + 0*4);
10877 bfd_put_32 (output_bfd,
10878 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10879 bfd_put_32 (output_bfd,
10880 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10881 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10883 bfd_put_32 (output_bfd,
10884 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10885 bfd_put_32 (output_bfd,
10886 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10890 bfd_put_32 (output_bfd,
10891 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10892 bfd_put_32 (output_bfd,
10893 LWZ_12_12 + 4, p + 6*4);
10898 if (htab->glink_eh_frame != NULL
10899 && htab->glink_eh_frame->contents != NULL)
10901 unsigned char *p = htab->glink_eh_frame->contents;
10904 p += sizeof (glink_eh_frame_cie);
10909 /* Offset to .glink. */
10910 val = (htab->glink->output_section->vma
10911 + htab->glink->output_offset);
10912 val -= (htab->glink_eh_frame->output_section->vma
10913 + htab->glink_eh_frame->output_offset);
10914 val -= p - htab->glink_eh_frame->contents;
10915 bfd_put_32 (htab->elf.dynobj, val, p);
10917 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10918 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10919 htab->glink_eh_frame,
10920 htab->glink_eh_frame->contents))
10927 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10928 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10929 #define TARGET_BIG_SYM powerpc_elf32_vec
10930 #define TARGET_BIG_NAME "elf32-powerpc"
10931 #define ELF_ARCH bfd_arch_powerpc
10932 #define ELF_TARGET_ID PPC32_ELF_DATA
10933 #define ELF_MACHINE_CODE EM_PPC
10934 #ifdef __QNXTARGET__
10935 #define ELF_MAXPAGESIZE 0x1000
10936 #define ELF_COMMONPAGESIZE 0x1000
10938 #define ELF_MAXPAGESIZE 0x10000
10939 #define ELF_COMMONPAGESIZE 0x10000
10941 #define ELF_MINPAGESIZE 0x1000
10942 #define elf_info_to_howto ppc_elf_info_to_howto
10944 #ifdef EM_CYGNUS_POWERPC
10945 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10949 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10952 #define elf_backend_plt_not_loaded 1
10953 #define elf_backend_want_dynrelro 1
10954 #define elf_backend_can_gc_sections 1
10955 #define elf_backend_can_refcount 1
10956 #define elf_backend_rela_normal 1
10957 #define elf_backend_caches_rawsize 1
10959 #define bfd_elf32_mkobject ppc_elf_mkobject
10960 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10961 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10962 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10963 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10964 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10965 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10966 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10968 #define elf_backend_object_p ppc_elf_object_p
10969 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10970 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10971 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10972 #define elf_backend_relocate_section ppc_elf_relocate_section
10973 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10974 #define elf_backend_check_relocs ppc_elf_check_relocs
10975 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10976 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10977 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10978 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10979 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10980 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10981 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10982 #define elf_backend_fake_sections ppc_elf_fake_sections
10983 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10984 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10985 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10986 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10987 #define elf_backend_write_core_note ppc_elf_write_core_note
10988 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10989 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10990 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10991 #define elf_backend_write_section ppc_elf_write_section
10992 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10993 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10994 #define elf_backend_action_discarded ppc_elf_action_discarded
10995 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10996 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10998 #include "elf32-target.h"
11000 /* FreeBSD Target */
11002 #undef TARGET_LITTLE_SYM
11003 #undef TARGET_LITTLE_NAME
11005 #undef TARGET_BIG_SYM
11006 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
11007 #undef TARGET_BIG_NAME
11008 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
11011 #define ELF_OSABI ELFOSABI_FREEBSD
11014 #define elf32_bed elf32_powerpc_fbsd_bed
11016 #include "elf32-target.h"
11018 /* VxWorks Target */
11020 #undef TARGET_LITTLE_SYM
11021 #undef TARGET_LITTLE_NAME
11023 #undef TARGET_BIG_SYM
11024 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
11025 #undef TARGET_BIG_NAME
11026 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
11030 /* VxWorks uses the elf default section flags for .plt. */
11031 static const struct bfd_elf_special_section *
11032 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
11034 if (sec->name == NULL)
11037 if (strcmp (sec->name, ".plt") == 0)
11038 return _bfd_elf_get_sec_type_attr (abfd, sec);
11040 return ppc_elf_get_sec_type_attr (abfd, sec);
11043 /* Like ppc_elf_link_hash_table_create, but overrides
11044 appropriately for VxWorks. */
11045 static struct bfd_link_hash_table *
11046 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
11048 struct bfd_link_hash_table *ret;
11050 ret = ppc_elf_link_hash_table_create (abfd);
11053 struct ppc_elf_link_hash_table *htab
11054 = (struct ppc_elf_link_hash_table *)ret;
11055 htab->is_vxworks = 1;
11056 htab->plt_type = PLT_VXWORKS;
11057 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
11058 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
11059 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
11064 /* Tweak magic VxWorks symbols as they are loaded. */
11066 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
11067 struct bfd_link_info *info,
11068 Elf_Internal_Sym *sym,
11069 const char **namep,
11074 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
11078 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
11082 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11084 ppc_elf_final_write_processing (abfd, linker);
11085 elf_vxworks_final_write_processing (abfd, linker);
11088 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
11090 #undef elf_backend_want_plt_sym
11091 #define elf_backend_want_plt_sym 1
11092 #undef elf_backend_want_got_plt
11093 #define elf_backend_want_got_plt 1
11094 #undef elf_backend_got_symbol_offset
11095 #define elf_backend_got_symbol_offset 0
11096 #undef elf_backend_plt_not_loaded
11097 #define elf_backend_plt_not_loaded 0
11098 #undef elf_backend_plt_readonly
11099 #define elf_backend_plt_readonly 1
11100 #undef elf_backend_got_header_size
11101 #define elf_backend_got_header_size 12
11102 #undef elf_backend_dtrel_excludes_plt
11103 #define elf_backend_dtrel_excludes_plt 1
11105 #undef bfd_elf32_get_synthetic_symtab
11107 #undef bfd_elf32_bfd_link_hash_table_create
11108 #define bfd_elf32_bfd_link_hash_table_create \
11109 ppc_elf_vxworks_link_hash_table_create
11110 #undef elf_backend_add_symbol_hook
11111 #define elf_backend_add_symbol_hook \
11112 ppc_elf_vxworks_add_symbol_hook
11113 #undef elf_backend_link_output_symbol_hook
11114 #define elf_backend_link_output_symbol_hook \
11115 elf_vxworks_link_output_symbol_hook
11116 #undef elf_backend_final_write_processing
11117 #define elf_backend_final_write_processing \
11118 ppc_elf_vxworks_final_write_processing
11119 #undef elf_backend_get_sec_type_attr
11120 #define elf_backend_get_sec_type_attr \
11121 ppc_elf_vxworks_get_sec_type_attr
11122 #undef elf_backend_emit_relocs
11123 #define elf_backend_emit_relocs \
11124 elf_vxworks_emit_relocs
11127 #define elf32_bed ppc_elf_vxworks_bed
11128 #undef elf_backend_post_process_headers
11130 #include "elf32-target.h"